/* roulang page: index */
:root{
  --bg-0:#05070E;--bg-1:#0A0F1E;--bg-2:#101731;
  --brand:#2E6BFF;--brand-2:#7A5CFF;--brand-soft:rgba(46,107,255,.12);
  --accent:#00E0C6;--warn:#FFB020;--danger:#FF5C7A;
  --text:#E8EDF8;--text-2:#A9B6D3;--text-3:#6E7C9C;
  --line:rgba(120,160,255,.16);--line-strong:rgba(120,160,255,.34);
  --glass:rgba(16,24,45,.62);--glass-2:rgba(12,19,38,.94);
  --r-card:18px;--r-lg:24px;--r-sm:10px;--r-pill:999px;
  --sh-1:0 8px 24px rgba(3,8,24,.55);
  --sh-2:0 16px 40px rgba(3,8,24,.65),0 0 24px rgba(46,107,255,.25);
  --w:1240px;--sp:92px;
  --font:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Oxanium","Rajdhani",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg-0);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:#9C86FF;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(46,107,255,.4);color:#fff}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px}
.section{padding:var(--sp) 0;position:relative}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-family:var(--font-num);font-weight:600;margin-bottom:14px}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:2px}
.section-head h2{font-size:clamp(24px,3vw,33px)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px;max-width:680px}
.rule{height:1px;background:linear-gradient(90deg,rgba(46,107,255,.5),rgba(0,224,198,.28),transparent)}

/* 按钮 */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 24px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;letter-spacing:.01em;overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;white-space:nowrap}
.btn i{font-size:14px}
.btn-primary{background:linear-gradient(135deg,#2E6BFF,#7A5CFF);color:#fff;box-shadow:0 8px 28px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.38) 50%,transparent 70%);transform:translateX(-130%);transition:transform .65s ease}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(46,107,255,.55),inset 0 1px 0 rgba(255,255,255,.22);color:#fff}
.btn-primary:hover::after{transform:translateX(130%)}
.btn-ghost{background:transparent;border-color:rgba(46,107,255,.6);color:#B9CBFF}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:#fff;transform:translateY(-2px)}
.btn-soft{background:rgba(46,107,255,.14);border-color:var(--line);color:#CDDBFF}
.btn-soft:hover{background:rgba(46,107,255,.24);color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.6;cursor:not-allowed;filter:saturate(.6)}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.06em;border:1px solid var(--line);background:rgba(10,15,30,.7);color:var(--text-2)}
.badge-brand{color:#B9CBFF;border-color:rgba(46,107,255,.5);background:rgba(46,107,255,.14)}
.badge-accent{color:#8FF3E6;border-color:rgba(0,224,198,.4);background:rgba(0,224,198,.12)}
.badge-warn{color:#FFD489;border-color:rgba(255,176,32,.45);background:rgba(255,176,32,.14)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:var(--r-pill);background:rgba(16,24,45,.7);border:1px solid var(--line);color:var(--text-2);font-size:13px;transition:.2s}
.tag-chip:hover{color:#fff;border-color:rgba(46,107,255,.5);background:rgba(46,107,255,.16)}
.tag-chip i{color:var(--accent);font-size:11px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,14,.74);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:background .3s ease,box-shadow .3s ease}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(120,160,255,.22),transparent);opacity:.7;transition:opacity .3s}
.site-header.is-stuck{background:rgba(4,6,13,.96);box-shadow:0 12px 34px rgba(0,0,0,.55)}
.site-header.is-stuck::after{opacity:1;background:linear-gradient(90deg,transparent,rgba(46,107,255,.85),rgba(0,224,198,.6),transparent)}
.brandbar{border-bottom:1px solid var(--line);transition:height .3s ease}
.brandbar-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height .3s ease}
.is-stuck .brandbar-inner{height:56px}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-family:var(--font-num);font-weight:700;font-size:15px;color:#fff;background:linear-gradient(135deg,#2E6BFF,#7A5CFF);box-shadow:0 6px 20px rgba(46,107,255,.45),inset 0 1px 0 rgba(255,255,255,.25)}
.logo-text{font-size:16.5px;font-weight:700;color:#fff;letter-spacing:.01em;line-height:1.2}
.logo-text small{display:block;font-size:10.5px;font-weight:500;color:var(--text-3);letter-spacing:.16em;font-family:var(--font-num);text-transform:uppercase}
.brandbar-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 8px 0 14px;border-radius:var(--r-pill);background:rgba(10,15,30,.8);border:1px solid var(--line);transition:.22s}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(46,107,255,.15)}
.search-box i{color:var(--text-3);font-size:13px}
.search-box input{width:190px;background:none;border:0;outline:none;color:var(--text);font-size:14px}
.search-box input::placeholder{color:var(--text-3)}
.search-box button{width:30px;height:30px;border-radius:50%;border:0;background:linear-gradient(135deg,#2E6BFF,#7A5CFF);color:#fff;display:grid;place-items:center;font-size:12px}
.link-plain{color:var(--text-2);font-size:14px;display:inline-flex;align-items:center;gap:7px}
.link-plain i{color:var(--accent);font-size:13px}
.hamburger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:rgba(10,15,30,.8);padding:0;place-items:center;gap:4px}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);margin:3px auto;transition:.25s}
.channelbar-inner{display:flex;align-items:center;gap:22px;height:54px;transition:height .3s ease}
.is-stuck .channelbar-inner{height:46px}
.channel-nav{display:flex;align-items:center;gap:6px}
.channel-nav a{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:var(--r-sm);font-size:14.5px;font-weight:600;color:var(--text-2);white-space:nowrap;transition:.2s}
.channel-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.channel-nav a:hover{color:#fff;background:rgba(46,107,255,.1)}
.channel-nav a:hover::after{transform:scaleX(1)}
.channel-nav a.active{color:#fff;background:rgba(46,107,255,.16);box-shadow:0 0 18px rgba(46,107,255,.28)}
.channel-nav a.active::after{transform:scaleX(1)}
.hot-tags{margin-left:auto;display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 0}
.hot-tags::-webkit-scrollbar{display:none}
.hot-tags span{font-size:11px;letter-spacing:.14em;color:var(--text-3);font-family:var(--font-num);text-transform:uppercase;white-space:nowrap}
.hot-tags a{font-size:12.5px;color:var(--text-2);padding:4px 11px;border-radius:var(--r-pill);border:1px solid var(--line);white-space:nowrap;transition:.2s}
.hot-tags a:hover{color:#fff;border-color:rgba(0,224,198,.5);background:rgba(0,224,198,.1)}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,14,.66);backdrop-filter:blur(3px);opacity:0;visibility:hidden;transition:.3s ease;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(350px,88vw);z-index:80;background:var(--bg-1);border-left:1px solid var(--line);transform:translateX(103%);transition:transform .32s cubic-bezier(.4,0,.2,1);padding:22px;overflow-y:auto}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:rgba(10,15,30,.8);color:var(--text);display:grid;place-items:center}
.drawer-title{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);font-family:var(--font-num);margin:22px 0 10px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 14px;border-radius:12px;color:var(--text-2);font-weight:600;border:1px solid transparent}
.drawer-nav a:hover,.drawer-nav a.active{color:#fff;background:rgba(46,107,255,.15);border-color:rgba(46,107,255,.35)}
.drawer .search-box{margin-top:8px}
.drawer .search-box input{width:100%}
.drawer .btn{margin-top:14px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:76px 0 84px;background:var(--bg-0)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.4}
.hero-bg::after{content:"";position:absolute;inset:0;background:
  linear-gradient(100deg,rgba(5,7,14,.96) 8%,rgba(5,7,14,.82) 44%,rgba(10,15,30,.6) 100%),
  radial-gradient(900px 520px at 82% 12%,rgba(46,107,255,.3),transparent 62%),
  radial-gradient(620px 420px at 10% 96%,rgba(122,92,255,.24),transparent 66%),
  repeating-linear-gradient(0deg,rgba(120,160,255,.05) 0 1px,transparent 1px 46px),
  repeating-linear-gradient(90deg,rgba(120,160,255,.05) 0 1px,transparent 1px 46px)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.28fr 1fr;gap:52px;align-items:center;min-height:560px}
.hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.15;letter-spacing:-.01em;margin:20px 0 18px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,#7FA8FF,#00E0C6);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:600px}
.hero-stats li{padding:16px 18px;border-radius:14px;background:rgba(10,15,30,.72);border:1px solid var(--line)}
.hero-stats strong{display:block;font-family:var(--font-num);font-size:25px;color:#fff;line-height:1.2}
.hero-stats span{font-size:12.5px;color:var(--text-3);letter-spacing:.03em}
.hero-right{position:relative}
.glass-card{border-radius:var(--r-lg);background:var(--glass);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--sh-1);padding:26px}
.hero-card img{border-radius:14px;aspect-ratio:16/10;object-fit:cover;width:100%;margin-bottom:20px}
.hero-points li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--text-2)}
.hero-points li:last-of-type{border-bottom:0}
.hero-points b{color:var(--text);font-weight:600}
.dot{flex-shrink:0;width:9px;height:9px;margin-top:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(0,224,198,.9)}
.hero-card .btn{margin-top:16px}
.float-card{position:absolute;left:-34px;bottom:-28px;padding:14px 18px;border-radius:16px;background:var(--glass-2);border:1px solid rgba(46,107,255,.42);box-shadow:0 14px 34px rgba(3,8,24,.7),0 0 22px rgba(46,107,255,.25);backdrop-filter:blur(12px)}
.float-card span{display:block;font-size:11.5px;color:var(--text-3);letter-spacing:.1em;font-family:var(--font-num);text-transform:uppercase}
.float-card b{font-family:var(--font-num);font-size:20px;color:var(--accent)}

/* 阶梯 */
.ladder-list{display:grid;gap:18px}
.ladder-item{position:relative;display:grid;grid-template-columns:104px minmax(0,1fr) auto;gap:26px;align-items:center;padding:26px 30px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease}
.ladder-item::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--brand-2));opacity:.75}
.ladder-item:nth-child(1){margin-right:13%}
.ladder-item:nth-child(2){margin-right:8.6%}
.ladder-item:nth-child(3){margin-right:4.3%}
.ladder-item:hover{transform:translateY(-3px);border-color:rgba(46,107,255,.45);box-shadow:var(--sh-2)}
.ladder-no{font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;color:rgba(46,107,255,.34)}
.ladder-item h3{font-size:20px;margin-bottom:8px}
.ladder-item h3 small{font-size:12.5px;font-weight:500;color:var(--accent);margin-left:10px;letter-spacing:.04em}
.ladder-perks{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13.5px;color:var(--text-2)}
.ladder-perks li{display:inline-flex;align-items:center;gap:8px}
.ladder-perks i{color:var(--accent);font-size:11px}
.ladder-state{display:flex;flex-direction:column;align-items:flex-end;gap:10px}

/* 对比表 */
.compare-wrap{overflow-x:auto;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);box-shadow:var(--sh-1)}
table.compare{width:100%;min-width:800px;border-collapse:collapse}
.compare th,.compare td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-2)}
.compare thead th{position:sticky;top:0;z-index:2;background:var(--glass-2);color:#fff;font-size:15.5px;font-weight:700;backdrop-filter:blur(12px)}
.compare thead th span{display:block;font-size:12px;font-weight:500;color:var(--text-3);margin-top:4px;letter-spacing:.03em}
.compare tbody th{color:var(--text);font-weight:600;font-size:14.5px}
.compare tbody tr:last-child th,.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr:hover td,.compare tbody tr:hover th{background:rgba(46,107,255,.07)}
.compare .is-reco{background:rgba(46,107,255,.11);box-shadow:inset 1px 0 0 rgba(46,107,255,.6),inset -1px 0 0 rgba(46,107,255,.6)}
.compare thead th.is-reco{color:#fff}
.compare .yes{color:var(--accent);font-weight:600}
.compare .no{color:var(--text-3)}
.reco-flag{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-pill);font-size:11px;font-weight:700;letter-spacing:.1em;color:#05070E;background:linear-gradient(135deg,#00E0C6,#7A5CFF);margin-left:8px}
.compare-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* 资讯 */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.filter-pills{display:flex;flex-wrap:wrap;gap:10px}
.filter-pills a{padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:13.5px;color:var(--text-2);background:rgba(16,24,45,.6);transition:.2s}
.filter-pills a:hover,.filter-pills a.active{color:#fff;border-color:rgba(46,107,255,.55);background:rgba(46,107,255,.18)}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(46,107,255,.45)}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-card:hover .news-thumb img{transform:scale(1.035)}
.news-cat{position:absolute;top:12px;left:12px;padding:4px 11px;border-radius:var(--r-pill);font-size:11.5px;font-weight:600;letter-spacing:.05em;color:#DFE9FF;background:rgba(10,15,30,.82);border:1px solid rgba(120,160,255,.34);backdrop-filter:blur(6px)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;gap:12px}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--accent)}
.news-sum{font-size:13.8px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--text-3)}
.news-meta .more{display:inline-flex;align-items:center;gap:6px;color:#9C86FF;font-weight:600}
.news-meta .more:hover{color:var(--accent)}
.empty-state{grid-column:1/-1;min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;border-radius:var(--r-card);border:1px dashed var(--line-strong);background:rgba(10,15,30,.5);color:var(--text-2);font-size:14.5px}
.empty-state i{font-size:26px;color:var(--text-3)}

/* 限时 */
.flash{position:relative;overflow:hidden;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;padding:36px 40px;border-radius:var(--r-lg);background:linear-gradient(120deg,rgba(255,176,32,.14),rgba(46,107,255,.14) 58%,rgba(122,92,255,.16));border:1px solid rgba(255,176,32,.3);box-shadow:var(--sh-1)}
.flash::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.16;mix-blend-mode:luminosity}
.flash>*{position:relative}
.flash-left{max-width:520px}
.flash-left h2{font-size:clamp(22px,2.6vw,30px);margin:12px 0 12px}
.flash-left p{color:var(--text-2);font-size:14.5px}
.countdown{display:flex;align-items:center;gap:12px;margin-top:24px}
.count-block{min-width:78px;padding:12px 6px;text-align:center;border-radius:14px;background:rgba(5,7,14,.7);border:1px solid var(--line)}
.count-block b{display:block;font-family:var(--font-num);font-size:29px;font-weight:700;line-height:1.15;color:var(--warn)}
.count-block span{font-size:11.5px;letter-spacing:.12em;color:var(--text-3);font-family:var(--font-num);text-transform:uppercase}
.count-sep{font-family:var(--font-num);font-size:24px;color:var(--text-3);animation:blink 1.6s steps(2,start) infinite}
@keyframes blink{50%{opacity:.25}}
.flash-right{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.btn-pulse{animation:pulse 1.8s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 8px 28px rgba(46,107,255,.42),0 0 0 0 rgba(46,107,255,.5)}70%{box-shadow:0 8px 28px rgba(46,107,255,.42),0 0 0 16px rgba(46,107,255,0)}100%{box-shadow:0 8px 28px rgba(46,107,255,.42),0 0 0 0 rgba(46,107,255,0)}}

/* 表单 */
.consult{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:start}
.consult-aside .info-list{margin-top:26px;display:grid;gap:14px}
.info-list li{display:flex;gap:14px;padding:16px 18px;border-radius:14px;background:rgba(10,15,30,.62);border:1px solid var(--line);font-size:14px;color:var(--text-2)}
.info-list i{color:var(--accent);margin-top:4px}
.form-panel{padding:30px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);box-shadow:var(--sh-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em}
.field label b{color:var(--danger)}
.field input,.field select,.field textarea{width:100%;padding:13px 15px;border-radius:var(--r-sm);background:rgba(5,7,14,.72);border:1px solid var(--line);color:var(--text);font-size:14.5px;outline:none;transition:.22s;min-height:46px}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(46,107,255,.16)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 4px rgba(255,92,122,.12)}
.field .err{font-size:12px;color:var(--danger);display:none}
.field.has-error .err{display:block}
.check-line{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);grid-column:1/-1}
.check-line input{width:18px;height:18px;min-height:auto;margin-top:3px;accent-color:var(--brand)}
.form-success{display:none;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:44px 24px}
.form-success i{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;font-size:24px;color:#0A0F1E;background:linear-gradient(135deg,#00E0C6,#7A5CFF)}
.form-success h3{font-size:20px}
.form-success p{color:var(--text-2);font-size:14px}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{border-radius:16px;background:var(--glass);border:1px solid var(--line);margin-bottom:14px;overflow:hidden;transition:border-color .25s ease}
.faq-item.is-open{border-color:rgba(46,107,255,.42)}
.faq-q{position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px 20px 28px;background:none;border:0;color:var(--text);font-size:16px;font-weight:600;text-align:left;line-height:1.6}
.faq-q::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--brand),var(--accent))}
.faq-q i{color:var(--text-3);font-size:14px;transition:transform .25s ease,color .25s ease}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 28px 22px;color:var(--text-2);font-size:14.5px;line-height:1.85}

/* CTA 横幅 */
.cta-band{position:relative;overflow:hidden;padding:56px 44px;border-radius:var(--r-lg);background:var(--bg-2);border:1px solid rgba(46,107,255,.3);text-align:center}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.22}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% 0%,rgba(46,107,255,.35),transparent 70%)}
.cta-band>*{position:relative}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:14px}
.cta-band p{color:var(--text-2);max-width:660px;margin:0 auto 26px;font-size:15px}
.cta-band .btn-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* 页脚 */
.site-footer{margin-top:var(--sp);padding-top:64px;background:linear-gradient(180deg,rgba(10,15,30,.9),rgba(5,7,14,1));border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.site-footer h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-family:var(--font-num);margin-bottom:18px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.9}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px}
.footer-links a::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--line-strong);transition:.2s}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-links a:hover::before{background:var(--accent)}
.footer-contact li{display:flex;gap:12px;font-size:13.5px;color:var(--text-2);margin-bottom:14px}
.footer-contact i{color:var(--brand);margin-top:4px;width:16px;text-align:center}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-3)}
.footer-bottom .sep{opacity:.5;margin:0 10px}
.footer-bottom a{color:var(--text-2)}

/* 响应式 */
@media (max-width:1280px){
  :root{--sp:80px;--w:1120px}
  .float-card{left:-14px}
}
@media (max-width:1024px){
  :root{--sp:68px}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0}
  .hero-right{max-width:560px}
  .float-card{position:static;margin-top:16px;display:inline-flex;gap:10px;align-items:baseline}
  .consult{grid-template-columns:1fr;gap:40px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .ladder-item:nth-child(1){margin-right:9%}
  .ladder-item:nth-child(2){margin-right:6%}
  .ladder-item:nth-child(3){margin-right:3%}
}
@media (max-width:900px){
  .brandbar-tools .search-box,.brandbar-tools .link-plain{display:none}
  .hamburger{display:grid}
  .channelbar-inner{gap:12px}
  .channel-nav{overflow-x:auto;scrollbar-width:none;flex:1}
  .channel-nav::-webkit-scrollbar{display:none}
  .hot-tags{display:none}
}
@media (max-width:768px){
  :root{--sp:56px}
  .container{padding:0 20px}
  .hero{padding:52px 0 60px}
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-stats li:last-child{grid-column:1/-1}
  .ladder-item{grid-template-columns:64px minmax(0,1fr);gap:16px;padding:22px}
  .ladder-item:nth-child(n){margin-right:0}
  .ladder-no{font-size:32px}
  .ladder-state{grid-column:1/-1;flex-direction:row;align-items:center;justify-content:space-between}
  .ladder-item h3 small{display:block;margin:6px 0 0}
  .compare-wrap{overflow:visible;background:none;border:0;box-shadow:none;backdrop-filter:none}
  table.compare{min-width:0;display:block}
  table.compare thead{display:none}
  table.compare tbody{display:block}
  table.compare tr{display:block;padding:10px 4px;margin-bottom:18px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line)}
  table.compare tr:hover th,table.compare tr:hover td{background:transparent}
  table.compare tbody th{display:block;padding:12px 18px 8px;font-size:13px;letter-spacing:.06em;color:var(--accent)}
  table.compare td{display:flex;justify-content:space-between;gap:16px;border-bottom:1px dashed var(--line);padding:12px 18px;font-size:14px}
  table.compare td::before{content:attr(data-label);color:var(--text-3);font-size:13px;flex-shrink:0}
  table.compare tr td:last-child{border-bottom:0}
  .compare .is-reco{box-shadow:none;background:transparent}
  .flash{padding:26px 22px}
  .count-block{min-width:64px}
  .count-block b{font-size:23px}
  .form-grid{grid-template-columns:1fr}
  .form-panel{padding:22px}
  .faq-q{font-size:15px;padding:18px 18px 18px 22px}
  .faq-a p{padding:0 22px 18px}
  .cta-band{padding:40px 22px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .logo-text small{display:none}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:15px}
  .hero-cta .btn{width:100%}
  .hero-stats{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .section-head h2{font-size:22px}
  .search-box input{width:100%}
  .countdown{gap:8px}
  .count-block{min-width:0;flex:1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:380px){
  .logo-text{font-size:14.5px}
  .ladder-item{grid-template-columns:54px minmax(0,1fr)}
  .ladder-no{font-size:26px}
  .btn{padding:0 18px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1E;
  --bg-2:#101731;
  --brand:#2E6BFF;
  --brand-2:#7A5CFF;
  --accent:#00E0C6;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E8EDF8;
  --text-2:#A9B6D3;
  --text-3:#6E7C9C;
  --line:rgba(120,160,255,.16);
  --line-strong:rgba(120,160,255,.34);
  --glass:rgba(16,24,45,.62);
  --glass-2:rgba(16,24,45,.86);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(3,8,24,.55);
  --shadow-2:0 16px 40px rgba(3,8,24,.65),0 0 24px rgba(46,107,255,.25);
  --container:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Oxanium","Rajdhani","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:15px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(46,107,255,.20),transparent 62%),
    radial-gradient(760px 480px at 92% 4%,rgba(122,92,255,.16),transparent 60%),
    radial-gradient(620px 420px at 50% 108%,rgba(0,224,198,.08),transparent 62%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:#9DB7FF;text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease;}
a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.25;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:76px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,32px);}
.section-head p{color:var(--text-2);font-size:14px;margin-top:8px;max-width:620px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-family:var(--font-num);font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--accent),transparent);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;
  text-decoration:none;
  position:relative;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,#2E6BFF,#7A5CFF);
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 28px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.36),transparent);
  transform:skewX(-18deg);
  transition:left .5s ease;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(46,107,255,.6),inset 0 1px 0 rgba(255,255,255,.24);color:#fff;}
.btn-primary:hover::after{left:130%;}
.btn-ghost{
  color:var(--text);
  border:1px solid rgba(46,107,255,.55);
  background:rgba(46,107,255,.06);
}
.btn-ghost:hover{background:rgba(46,107,255,.16);transform:translateY(-2px);color:#fff;}
.btn-text{
  padding:0 4px;min-height:auto;color:#9DB7FF;font-weight:600;
}
.btn-text:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(1px);}
.btn[disabled]{opacity:.45;filter:saturate(.6);cursor:not-allowed;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.06em;font-weight:600;
  border:1px solid var(--line);
  background:rgba(46,107,255,.10);
  color:#B8CCFF;
}
.badge-brand{background:rgba(46,107,255,.18);border-color:rgba(46,107,255,.45);color:#C9D9FF;}
.badge-accent{background:rgba(0,224,198,.12);border-color:rgba(0,224,198,.4);color:#9FF4E7;}
.badge-warn{background:rgba(255,176,32,.14);border-color:rgba(255,176,32,.42);color:#FFD48A;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(16,24,45,.6);
  color:var(--text-2);font-size:13px;
  transition:.22s ease;
}
.tag:hover{color:#fff;border-color:var(--line-strong);background:rgba(46,107,255,.16);text-decoration:none;transform:translateY(-1px);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,7,14,.84);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .3s ease,backdrop-filter .3s ease,box-shadow .3s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,107,255,.55),rgba(0,224,198,.35),transparent);
  opacity:0;transition:opacity .3s ease;
}
.site-header.is-stuck{background:rgba(5,7,14,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 12px 34px rgba(3,8,24,.6);}
.site-header.is-stuck::after{opacity:1;}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 24px;transition:padding .3s ease;}
.site-header.is-stuck .header-top-inner{padding:8px 24px;}
.logo{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--text);}
.logo:hover{text-decoration:none;color:var(--text);}
.logo-mark{
  width:42px;height:42px;flex:none;
  display:grid;place-items:center;
  border-radius:12px;
  font-family:var(--font-num);font-weight:700;font-size:17px;letter-spacing:.02em;
  color:#fff;
  background:linear-gradient(140deg,#2E6BFF,#7A5CFF 60%,#00E0C6);
  box-shadow:0 8px 22px rgba(46,107,255,.45),inset 0 1px 0 rgba(255,255,255,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;font-size:17px;font-weight:700;}
.logo-text small{
  font-family:var(--font-num);font-size:10px;letter-spacing:.2em;
  color:var(--text-3);font-weight:600;margin-top:2px;
}
.header-actions{display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  padding:0 14px;height:40px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(16,24,45,.72);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.search-box:focus-within{border-color:rgba(46,107,255,.7);box-shadow:0 0 0 3px rgba(46,107,255,.18);}
.search-box i{color:var(--text-3);font-size:13px;}
.search-box input{
  border:0;background:transparent;outline:none;
  width:172px;font-size:13px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.link-service{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--text-2);text-decoration:none;
}
.link-service i{color:var(--accent);}
.link-service:hover{color:var(--accent);text-decoration:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);
  background:rgba(16,24,45,.7);
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--accent);}
.channel-bar{border-top:1px solid var(--line);position:relative;}
.channel-inner{display:flex;align-items:center;gap:24px;padding:0 24px;height:52px;transition:height .3s ease;}
.site-header.is-stuck .channel-inner{height:46px;}
.channel-nav{display:flex;align-items:center;gap:4px;flex:1;overflow-x:auto;scrollbar-width:none;height:100%;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;display:flex;align-items:center;height:100%;
  padding:0 15px;font-size:14px;color:var(--text-2);white-space:nowrap;
  text-decoration:none;transition:color .2s ease;
}
.channel-nav a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
  box-shadow:0 0 12px rgba(46,107,255,.8);
}
.channel-nav a:hover{color:var(--text);text-decoration:none;}
.channel-nav a:hover::after{transform:scaleX(1);}
.channel-nav a.active{color:#fff;font-weight:600;}
.channel-nav a.active::after{transform:scaleX(1);}
.hot-tags{display:flex;align-items:center;gap:8px;flex:none;max-width:46%;overflow-x:auto;scrollbar-width:none;}
.hot-tags::-webkit-scrollbar{display:none;}
.hot-tags span.hot-label{
  font-family:var(--font-num);font-size:11px;letter-spacing:.12em;
  color:var(--warn);border:1px solid rgba(255,176,32,.35);
  background:rgba(255,176,32,.1);padding:3px 9px;border-radius:var(--radius-pill);flex:none;
}
.hot-tags a{
  font-size:12px;color:var(--text-3);padding:4px 10px;border-radius:var(--radius-pill);
  border:1px solid transparent;white-space:nowrap;text-decoration:none;
}
.hot-tags a:hover{color:var(--accent);border-color:var(--line);text-decoration:none;}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,15,.68);
  backdrop-filter:blur(3px);z-index:90;opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:95;
  background:linear-gradient(180deg,rgba(10,15,30,.99),rgba(5,7,14,.99));
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s ease;
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-head span{font-weight:700;font-size:15px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);color:var(--text-2);}
.drawer-close:hover{color:var(--accent);border-color:var(--line-strong);}
.drawer-body{padding:20px;display:flex;flex-direction:column;gap:20px;}
.drawer-search input{width:100%;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(16,24,45,.55);
  color:var(--text-2);font-size:14px;text-decoration:none;
}
.drawer-nav a:hover,.drawer-nav a.active{color:#fff;border-color:rgba(46,107,255,.5);background:rgba(46,107,255,.14);text-decoration:none;}
.drawer-block h4{font-size:12px;letter-spacing:.12em;color:var(--text-3);font-family:var(--font-num);margin-bottom:12px;text-transform:uppercase;}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 面包屑 ============ */
.breadcrumb-wrap{border-bottom:1px solid var(--line);background:rgba(10,15,30,.5);}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  padding:16px 24px;font-size:13px;color:var(--text-3);
  overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--text-2);text-decoration:none;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;}

/* ============ 文章头部 ============ */
.article-hero{position:relative;padding:52px 0 40px;overflow:hidden;}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.20;filter:saturate(.9);
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.72),rgba(5,7,14,.94) 62%,var(--bg-0));
}
.article-hero .container{position:relative;z-index:2;}
.article-kicker{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px;}
.article-title{
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.28;
  max-width:900px;
  letter-spacing:-.01em;
}
.article-meta{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand);font-size:12px;}
.article-meta .num{font-family:var(--font-num);color:var(--text-2);}

/* ============ 文章主体布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
  padding:48px 0 72px;
}
.article-main{min-width:0;}
.article-cover{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  margin-bottom:36px;
  position:relative;
}
.article-cover img{width:100%;aspect-ratio:16/8;object-fit:cover;}
.article-cover figcaption{
  padding:10px 16px;font-size:12px;color:var(--text-3);
  background:rgba(10,15,30,.86);border-top:1px solid var(--line);
}

/* 正文排版 */
.article-body{
  max-width:780px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  padding-left:16px;
  margin:2.1em 0 .85em;
  font-size:clamp(21px,2.4vw,28px);
  color:var(--text);
  line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;width:4px;height:1.06em;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  box-shadow:0 0 14px rgba(46,107,255,.7);
}
.article-body h3{
  margin:1.7em 0 .6em;
  font-size:20px;font-weight:600;color:var(--text);
}
.article-body h4{margin:1.4em 0 .5em;font-size:17px;color:var(--text);}
.article-body a{color:#9DB7FF;border-bottom:1px solid rgba(157,183,255,.35);}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);text-decoration:none;}
.article-body strong{color:var(--text);font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:4px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:.6em;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  box-shadow:0 0 10px rgba(46,107,255,.6);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--font-num);font-size:12px;font-weight:700;
  color:var(--brand-2);letter-spacing:.02em;
  line-height:1.9;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  background:rgba(16,24,45,.66);
  backdrop-filter:blur(10px);
  color:var(--text-2);
  box-shadow:0 0 26px rgba(46,107,255,.14);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;border-radius:16px;margin:1.7em 0 .55em;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.article-body figcaption{
  display:block;font-size:12px;color:var(--text-3);text-align:center;margin-bottom:1.6em;
}
.article-body table{
  width:100%;display:block;overflow-x:auto;white-space:nowrap;
  margin:1.6em 0;font-size:14px;
  border:1px solid var(--line);border-radius:var(--radius-md);
}
.article-body thead th{
  background:rgba(46,107,255,.16);color:var(--text);
  font-weight:600;text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);
}
.article-body tbody td{padding:11px 16px;border-bottom:1px solid rgba(120,160,255,.09);color:var(--text-2);}
.article-body tbody tr:nth-child(even){background:rgba(16,24,45,.5);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0;}
.article-body code{
  font-family:var(--font-num);font-size:13px;
  background:rgba(46,107,255,.14);border:1px solid var(--line);
  padding:2px 7px;border-radius:6px;color:#C9D9FF;
}
.article-body pre{
  background:rgba(6,10,22,.92);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 18px;overflow-x:auto;margin:1.6em 0;
}
.article-body pre code{background:none;border:0;padding:0;}

/* 标签行 */
.tag-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-family:var(--font-num);text-transform:uppercase;}

/* 侧栏 */
.article-aside{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  padding:22px;
  box-shadow:var(--shadow-1);
}
.side-card h3{
  font-size:14px;letter-spacing:.04em;margin-bottom:16px;
  display:flex;align-items:center;gap:9px;color:var(--text);
}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--brand),var(--accent));}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list li{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.side-list li b{color:var(--text-2);font-weight:500;}
.side-links{display:flex;flex-direction:column;gap:8px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(10,15,30,.55);
  font-size:13px;color:var(--text-2);text-decoration:none;
  transition:.22s ease;
}
.side-links a:hover{color:#fff;border-color:rgba(46,107,255,.5);background:rgba(46,107,255,.14);transform:translateX(3px);text-decoration:none;}
.side-links i{color:var(--brand);font-size:12px;}
.side-cta{
  background:linear-gradient(145deg,rgba(46,107,255,.22),rgba(122,92,255,.16));
  border:1px solid rgba(46,107,255,.4);
}
.side-cta p{font-size:13px;color:var(--text-2);margin:0 0 16px;}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;}
.side-tags a{
  font-size:12px;padding:5px 11px;border-radius:var(--radius-pill);
  border:1px solid var(--line);color:var(--text-3);text-decoration:none;
}
.side-tags a:hover{color:var(--accent);border-color:var(--line-strong);text-decoration:none;}

/* 空态 */
.empty-state{
  min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  background:rgba(16,24,45,.45);padding:40px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--text-3);}
.empty-state p{color:var(--text-2);font-size:15px;}

/* 分页 / 返回 */
.article-pager{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line);flex-wrap:wrap;
}

/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.post-card{
  display:flex;flex-direction:column;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  height:100%;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(46,107,255,.42);}
.post-cover{position:relative;display:block;overflow:hidden;text-decoration:none;}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-badge{
  position:absolute;left:14px;top:14px;z-index:2;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(5,7,14,.78);backdrop-filter:blur(6px);
  border:1px solid rgba(46,107,255,.5);color:#C9D9FF;
}
.post-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-body h3{font-size:16px;line-height:1.5;}
.post-body h3 a{color:var(--text);text-decoration:none;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body h3 a:hover{color:var(--accent);text-decoration:none;}
.post-body p{
  font-size:13px;color:var(--text-3);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3);
}
.post-foot .num{font-family:var(--font-num);}
.post-foot .more{color:#9DB7FF;display:inline-flex;align-items:center;gap:6px;}
.post-card:hover .post-foot .more{color:var(--accent);}

/* CTA 横幅 */
.cta-banner{
  position:relative;overflow:hidden;
  border-radius:22px;
  border:1px solid rgba(46,107,255,.34);
  background:linear-gradient(120deg,rgba(46,107,255,.22),rgba(122,92,255,.16) 52%,rgba(0,224,198,.12));
  padding:40px;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.14;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2.6vw,28px);margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:14px;max-width:640px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,7,14,.6),rgba(5,7,14,.98));
  padding:64px 0 28px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:13px;color:var(--text-3);line-height:1.9;max-width:340px;}
.site-footer h4{
  font-size:13px;letter-spacing:.1em;font-family:var(--font-num);
  color:var(--text-2);text-transform:uppercase;margin-bottom:18px;font-weight:600;
}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:11px;}
.footer-links a,.footer-contact span{font-size:13px;color:var(--text-3);text-decoration:none;}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-3);line-height:1.7;}
.footer-contact i{color:var(--brand);margin-top:4px;font-size:12px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer-bottom .sep{margin:0 10px;opacity:.5;}

/* 回到顶部 */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  background:rgba(16,24,45,.86);
  backdrop-filter:blur(10px);
  color:var(--text-2);opacity:0;pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,color .2s ease;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{color:var(--accent);border-color:var(--line-strong);transform:translateY(-3px);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-aside{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hot-tags{display:none;}
}
@media (max-width:900px){
  .header-top-inner{padding:12px 20px;}
  .channel-bar{display:none;}
  .nav-toggle{display:inline-flex;}
  .search-box,.link-service{display:none;}
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .article-hero{padding:38px 0 32px;}
}
@media (max-width:768px){
  body{font-size:14.5px;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .article-title{font-size:clamp(22px,6vw,30px);}
  .article-body{font-size:15px;line-height:1.8;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:17px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .cta-banner{padding:28px 22px;}
  .related-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:24px;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .header-top-inner{padding:10px 16px;}
  .logo-mark{width:38px;height:38px;font-size:15px;}
  .article-meta{gap:14px;font-size:12px;}
  .article-layout{padding:32px 0 52px;}
  .tag-row{margin-top:28px;}
  .btn{padding:0 18px;font-size:13.5px;}
  .btn-sm{min-height:36px;padding:0 14px;font-size:12.5px;}
  .breadcrumb{padding:12px 16px;font-size:12px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:380px){
  .logo-text{font-size:14px;}
  .article-title{font-size:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1E;
  --bg-2:#101731;
  --brand:#2E6BFF;
  --brand-2:#7A5CFF;
  --accent:#00E0C6;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E8EDF8;
  --text-2:#A9B6D3;
  --text-3:#6E7C9C;
  --line:rgba(120,160,255,.16);
  --line-strong:rgba(120,160,255,.30);
  --glass:rgba(16,24,45,.62);
  --glass-2:rgba(16,24,45,.78);
  --r-card:18px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(3,8,24,.55);
  --sh-2:0 16px 40px rgba(3,8,24,.65), 0 0 24px rgba(46,107,255,.25);
  --container:1240px;
  --gap:24px;
  --sec:88px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Oxanium","Rajdhani",ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:#9FB6FF;text-decoration:none;transition:color .22s ease,border-color .22s ease;}
a:hover{color:var(--accent);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(46,107,255,.4);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(5,7,14,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,107,255,.55),rgba(0,224,198,.45),transparent);
  opacity:.5;
}
.site-header.scrolled{
  background:rgba(5,7,14,.95);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:0 10px 30px rgba(2,5,16,.65);
}
.header-top-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:66px;
  transition:min-height .28s ease;
}
.site-header.scrolled .header-top-inner{min-height:56px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
  color:var(--text);
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:38px;height:38px;
  border-radius:12px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:15px;
  letter-spacing:.04em;
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 22px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.25);
}
.logo-text{
  font-size:16px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo-text small{
  display:block;
  font-family:var(--font-num);
  font-size:10px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--text-3);
  margin-top:2px;
}
.channel-switch{position:relative;flex-shrink:0;}
.switch-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(16,24,45,.6);
  color:var(--text-2);
  font-size:13px;
  transition:all .24s ease;
}
.switch-btn:hover{color:var(--text);border-color:var(--line-strong);background:rgba(46,107,255,.12);}
.switch-menu{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  min-width:200px;
  padding:8px;
  border-radius:14px;
  background:var(--glass-2);
  backdrop-filter:blur(16px);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  display:flex;
  flex-direction:column;
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:all .24s ease;
}
.channel-switch:hover .switch-menu,
.channel-switch:focus-within .switch-menu{opacity:1;visibility:visible;transform:translateY(0);}
.switch-menu a{
  padding:9px 12px;
  border-radius:9px;
  font-size:14px;
  color:var(--text-2);
}
.switch-menu a:hover{background:rgba(46,107,255,.14);color:var(--text);}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.header-search{
  position:relative;
  display:flex;
  align-items:center;
}
.header-search i{
  position:absolute;
  left:13px;
  font-size:13px;
  color:var(--text-3);
  pointer-events:none;
}
.header-search input{
  width:216px;
  height:38px;
  padding:0 14px 0 34px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(10,15,30,.8);
  color:var(--text);
  transition:all .24s ease;
}
.header-search input::placeholder{color:var(--text-3);}
.header-search input:focus{
  border-color:rgba(46,107,255,.7);
  box-shadow:0 0 0 3px rgba(46,107,255,.18);
  background:rgba(16,24,45,.9);
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:13.5px;
  white-space:nowrap;
  transition:all .24s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(0,224,198,.45);background:rgba(0,224,198,.08);}

.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  overflow:hidden;
  white-space:nowrap;
  transition:transform .24s ease,box-shadow .24s ease,background .24s ease,color .24s ease,border-color .24s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 28px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(46,107,255,.55),0 0 24px rgba(122,92,255,.4),inset 0 1px 0 rgba(255,255,255,.24);
}
.btn-primary::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);
  transform:translateX(-120%);
  transition:transform .7s ease;
}
.btn-primary:hover::after{transform:translateX(120%);}
.btn-ghost{
  color:var(--text);
  border:1px solid rgba(46,107,255,.55);
  background:transparent;
}
.btn-ghost:hover{
  color:var(--text);
  background:rgba(46,107,255,.14);
  border-color:rgba(46,107,255,.85);
  transform:translateY(-2px);
}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:#9FB6FF;
  font-size:14px;
  font-weight:600;
  padding:0;
}
.btn-text i{transition:transform .24s ease;}
.btn-text:hover{color:var(--accent);}
.btn-text:hover i{transform:translateX(4px);}

.hamburger{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(16,24,45,.6);
  color:var(--text);
  font-size:16px;
  align-items:center;justify-content:center;
}

/* channel nav */
.nav-bar{
  border-top:1px solid var(--line);
}
.nav-bar-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:52px;
  transition:min-height .28s ease;
}
.site-header.scrolled .nav-bar-inner{min-height:48px;}
.channel-nav{
  display:flex;
  align-items:center;
  gap:6px;
  flex-shrink:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:52px;
  padding:0 14px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .22s ease;
}
.site-header.scrolled .channel-nav a{height:48px;}
.channel-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:8px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .26s ease;
  box-shadow:0 0 12px rgba(46,107,255,.8);
}
.channel-nav a:hover{color:var(--text);}
.channel-nav a:hover::after{transform:scaleX(.6);}
.channel-nav a.active{color:#fff;font-weight:600;}
.channel-nav a.active::after{transform:scaleX(1);}
.hot-tags{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  overflow-x:auto;
  white-space:nowrap;
  scrollbar-width:none;
  flex-shrink:1;
}
.hot-tags::-webkit-scrollbar{display:none;}
.hot-tags span{font-size:12px;color:var(--text-3);letter-spacing:.06em;text-transform:uppercase;flex-shrink:0;}
.hot-tags a{
  flex-shrink:0;
  font-size:12.5px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(16,24,45,.45);
}
.hot-tags a:hover{color:var(--accent);border-color:rgba(0,224,198,.45);background:rgba(0,224,198,.08);}

/* mobile drawer */
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(88vw,360px);
  z-index:120;
  transform:translateX(102%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  background:linear-gradient(180deg,rgba(10,15,30,.98),rgba(5,7,14,.99));
  border-left:1px solid var(--line);
  padding:22px 20px 32px;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:11px;
  border:1px solid var(--line);
  color:var(--text-2);
  display:grid;place-items:center;
}
.drawer-close:hover{color:var(--danger);border-color:rgba(255,92,122,.5);}
.drawer h5{
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--text-3);font-weight:600;margin-bottom:10px;
}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:0 14px;border-radius:11px;
  color:var(--text-2);font-size:15px;
  border:1px solid transparent;
}
.drawer-links a:hover,.drawer-links a.active{
  color:#fff;background:rgba(46,107,255,.15);border-color:rgba(46,107,255,.35);
}
.drawer-search{position:relative;}
.drawer-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:13px;}
.drawer-search input{
  width:100%;height:44px;padding:0 14px 0 36px;
  border-radius:11px;border:1px solid var(--line);
  background:rgba(16,24,45,.7);color:var(--text);
}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-tags a{
  font-size:12.5px;padding:5px 11px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);
}
.mask{
  position:fixed;inset:0;z-index:110;
  background:rgba(2,4,12,.7);
  backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
}
.mask.show{opacity:1;visibility:visible;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 76px;
  background:
    linear-gradient(180deg,rgba(5,7,14,.80) 0%,rgba(5,7,14,.90) 55%,rgba(5,7,14,.98) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,160,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,160,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 70% 30%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000 10%,transparent 78%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  top:-160px;right:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,107,255,.32),transparent 68%);
  filter:blur(20px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.crumb{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--accent);}
.crumb i{font-size:10px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(0,224,198,.35);
  background:rgba(0,224,198,.08);
  color:var(--accent);
  font-size:12.5px;
  letter-spacing:.06em;
  margin-bottom:20px;
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px var(--accent);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.45;transform:scale(.82);}
}
.hero h1{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#7FB0FF,var(--brand-2) 45%,var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:600px;
  margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;
}
.stat-chip{
  flex:1 1 150px;
  min-width:140px;
  padding:14px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(16,24,45,.55);
  backdrop-filter:blur(10px);
}
.stat-chip b{
  display:block;
  font-family:var(--font-num);
  font-size:22px;
  font-weight:700;
  color:#fff;
  line-height:1.3;
  letter-spacing:.02em;
}
.stat-chip span{font-size:12.5px;color:var(--text-3);}

.hero-panel{
  position:relative;
  padding:26px;
  border-radius:22px;
  background:var(--glass);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--sh-2);
}
.hero-panel h3{
  font-size:17px;
  font-weight:600;
  display:flex;align-items:center;gap:9px;
  margin-bottom:16px;
}
.hero-panel h3 i{color:var(--accent);}
.panel-list{display:flex;flex-direction:column;gap:13px;margin-bottom:18px;}
.panel-list li{
  display:flex;gap:11px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.65;
}
.panel-list li i{
  margin-top:5px;
  font-size:9px;
  color:var(--brand-2);
  text-shadow:0 0 10px rgba(122,92,255,.9);
}
.panel-divider{height:1px;background:var(--line);margin:16px 0;}
.panel-note{
  font-size:12.5px;
  color:var(--text-3);
  margin-bottom:16px;
}
.hero-panel .btn{width:100%;}
.float-card{
  position:absolute;
  left:-26px;bottom:-26px;
  padding:14px 18px;
  border-radius:16px;
  background:rgba(10,15,30,.9);
  border:1px solid rgba(46,107,255,.42);
  box-shadow:0 16px 34px rgba(2,5,16,.7),0 0 22px rgba(46,107,255,.22);
  display:flex;align-items:center;gap:12px;
}
.float-card .num{
  font-family:var(--font-num);
  font-size:24px;font-weight:700;
  color:var(--accent);
  line-height:1;
}
.float-card small{display:block;font-size:11.5px;color:var(--text-3);}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0;}
.section-alt{background:linear-gradient(180deg,rgba(10,15,30,.75),rgba(5,7,14,.95));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--accent);
  margin-bottom:14px;
}
.sec-tag::before{
  content:"";width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.sec-head h2{
  font-size:clamp(22px,3vw,32px);
  line-height:1.3;
  font-weight:700;
  margin-bottom:14px;
}
.sec-head p{color:var(--text-2);font-size:15.5px;}

/* feature rows */
.feature-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:52px;
  align-items:center;
}
.feature-row + .feature-row{margin-top:76px;}
.feature-row.reverse .feature-media{order:2;}
.feature-copy h2{
  font-size:clamp(21px,2.6vw,29px);
  line-height:1.32;
  margin-bottom:16px;
  font-weight:700;
}
.feature-copy p{color:var(--text-2);font-size:15.5px;margin-bottom:16px;}
.feature-list{display:flex;flex-direction:column;gap:12px;margin:20px 0 24px;}
.feature-list li{
  display:flex;gap:12px;
  font-size:14.5px;
  color:var(--text-2);
}
.feature-list li i{
  margin-top:4px;
  width:20px;height:20px;
  flex-shrink:0;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:10px;
  color:var(--accent);
  background:rgba(0,224,198,.12);
  border:1px solid rgba(0,224,198,.32);
}
.feature-media{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  aspect-ratio:16/11;
  background:var(--bg-2);
}
.feature-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s ease;
}
.feature-row:hover .feature-media img{transform:scale(1.03);}
.feature-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.10),rgba(5,7,14,.72));
}
.media-cap{
  position:absolute;
  left:18px;bottom:16px;
  z-index:2;
  font-size:12.5px;
  color:var(--text-2);
  padding:6px 12px;
  border-radius:var(--r-pill);
  background:rgba(5,7,14,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.step-line{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin:22px 0 24px;
}
.step-line li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(16,24,45,.5);
  transition:all .26s ease;
}
.step-line li:hover{
  border-color:rgba(46,107,255,.45);
  background:rgba(46,107,255,.1);
  transform:translateX(4px);
}
.step-line .idx{
  font-family:var(--font-num);
  font-size:15px;
  font-weight:700;
  color:var(--brand-2);
  min-width:26px;
  padding-top:1px;
}
.step-line strong{display:block;font-size:14.5px;font-weight:600;color:var(--text);margin-bottom:2px;}
.step-line span{font-size:13.5px;color:var(--text-2);}

/* cards grid */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.ch-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.ch-card:hover{
  transform:translateY(-3px);
  border-color:rgba(46,107,255,.42);
  box-shadow:var(--sh-2);
}
.ch-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
}
.ch-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.ch-card:hover .ch-thumb img{transform:scale(1.03);}
.ch-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.15),rgba(5,7,14,.72));
}
.badge{
  position:absolute;
  top:12px;left:12px;
  z-index:2;
  padding:4px 11px;
  border-radius:var(--r-pill);
  font-size:11.5px;
  letter-spacing:.04em;
  color:#fff;
  background:rgba(46,107,255,.85);
  border:1px solid rgba(255,255,255,.2);
  backdrop-filter:blur(6px);
}
.badge.green{background:rgba(0,224,198,.22);color:var(--accent);border-color:rgba(0,224,198,.45);}
.badge.purple{background:rgba(122,92,255,.28);color:#C7B8FF;border-color:rgba(122,92,255,.5);}
.badge.amber{background:rgba(255,176,32,.2);color:var(--warn);border-color:rgba(255,176,32,.45);}
.ch-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.ch-body h3{
  font-size:16.5px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:9px;
}
.ch-body p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.72;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.ch-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:13px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
}
.ch-foot .go{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:#9FB6FF;
  font-weight:600;
}
.ch-card:hover .ch-foot .go{color:var(--accent);}
.ch-card:hover .ch-foot .go i{transform:translateX(3px);}
.ch-foot .go i{transition:transform .24s ease;}

/* checklist */
.check-wrap{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.check-list{display:flex;flex-direction:column;gap:16px;counter-reset:ck;}
.check-list li{
  position:relative;
  display:flex;
  gap:16px;
  padding:20px 22px;
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(16,24,45,.5);
  transition:all .26s ease;
}
.check-list li:hover{
  border-color:rgba(0,224,198,.4);
  background:rgba(0,224,198,.06);
}
.check-list .num{
  font-family:var(--font-num);
  font-size:26px;
  font-weight:700;
  line-height:1;
  color:rgba(46,107,255,.42);
  min-width:44px;
}
.check-list strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:5px;}
.check-list span{font-size:14px;color:var(--text-2);line-height:1.7;}
.check-aside{
  padding:26px;
  border-radius:20px;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.check-aside h3{font-size:18px;font-weight:600;margin-bottom:14px;}
.check-aside p{font-size:14.5px;color:var(--text-2);margin-bottom:18px;}
.aside-media{
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:18px;
  aspect-ratio:16/10;
}
.aside-media img{width:100%;height:100%;object-fit:cover;}
.mini-list{display:flex;flex-direction:column;gap:10px;}
.mini-list li{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;
  color:var(--text-2);
  padding:10px 13px;
  border-radius:11px;
  background:rgba(10,15,30,.7);
  border:1px solid var(--line);
}
.mini-list b{
  font-family:var(--font-num);
  font-size:12.5px;
  color:var(--accent);
  font-weight:600;
}

/* faq */
.faq{max-width:900px;margin:0 auto;}
.faq details{
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(16,24,45,.5);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq details[open]{
  border-color:rgba(46,107,255,.45);
  background:rgba(46,107,255,.07);
}
.faq summary{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px 18px 22px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
  border-left:2px solid rgba(46,107,255,.6);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .chev{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:11px;
  transition:transform .28s ease,color .24s ease,border-color .24s ease;
}
.faq details[open] summary .chev{
  transform:rotate(180deg);
  color:var(--accent);
  border-color:rgba(0,224,198,.5);
}
.faq .faq-body{
  padding:0 22px 20px 24px;
  font-size:14.8px;
  color:var(--text-2);
  animation:fadeIn .28s ease;
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* cta banner */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  padding:52px 48px;
  background:
    linear-gradient(120deg,rgba(10,15,30,.94) 0%,rgba(16,23,49,.88) 50%,rgba(10,15,30,.94) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border:1px solid rgba(46,107,255,.35);
  box-shadow:0 20px 50px rgba(2,5,16,.7),0 0 40px rgba(46,107,255,.16);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-90px;
  width:340px;height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(122,92,255,.36),transparent 68%);
  filter:blur(14px);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(21px,2.6vw,30px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:10px;
}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* footer */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,30,.9),rgba(5,7,14,1));
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  margin-bottom:44px;
}
.footer-brand p{
  font-size:13.8px;
  color:var(--text-2);
  line-height:1.85;
  margin-top:16px;
  max-width:360px;
}
.site-footer h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:16px;
}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .22s ease,transform .22s ease;
}
.footer-links a:hover{color:var(--accent);transform:translateX(3px);}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:13.8px;
  color:var(--text-2);
  line-height:1.7;
}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--accent);}
.footer-bottom .sep{margin:0 10px;color:var(--line-strong);}

/* responsive */
@media (max-width:1180px){
  .header-search input{width:170px;}
  .icon-btn span{display:none;}
}
@media (max-width:1024px){
  :root{--sec:64px;}
  .hero{padding:52px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-panel{max-width:560px;}
  .float-card{left:auto;right:16px;bottom:-22px;}
  .feature-row{grid-template-columns:1fr;gap:32px;}
  .feature-row.reverse .feature-media{order:0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .header-search{display:none;}
  .channel-switch{display:none;}
  .icon-btn{display:none;}
  .hamburger{display:inline-flex;}
  .hot-tags{display:none;}
  .nav-bar-inner{min-height:48px;}
  .channel-nav a{height:48px;font-size:14px;padding:0 12px;}
  .cta-band{padding:40px 26px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .hero{padding:44px 0 56px;}
  .hero-stats{gap:10px;}
  .stat-chip{flex:1 1 calc(50% - 6px);min-width:0;padding:12px 14px;}
  .stat-chip b{font-size:19px;}
  .hero-sub{font-size:15.5px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:560px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  .logo-text{font-size:14.5px;}
  .logo-text small{letter-spacing:.16em;font-size:9px;}
  .logo-mark{width:34px;height:34px;border-radius:10px;font-size:13px;}
  .hero{padding:36px 0 48px;}
  .hero h1{font-size:clamp(24px,7vw,32px);}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .hero-panel{padding:20px;}
  .float-card{position:static;margin-top:16px;width:100%;justify-content:flex-start;}
  .sec-head{margin-bottom:30px;}
  .check-list li{padding:16px 16px;gap:12px;}
  .check-list .num{font-size:22px;min-width:34px;}
  .faq summary{padding:15px 16px;font-size:15px;}
  .faq .faq-body{padding:0 16px 16px 18px;}
  .cta-band{padding:32px 20px;border-radius:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:380px){
  .logo-text small{display:none;}
  .stat-chip{flex:1 1 100%;}
  .ch-body{padding:15px 16px 17px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1E;
  --bg-2:#101731;
  --brand:#2E6BFF;
  --brand-2:#7A5CFF;
  --accent:#00E0C6;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E8EDF8;
  --text-2:#A9B6D3;
  --text-3:#6E7C9C;
  --line:rgba(120,160,255,.16);
  --line-strong:rgba(120,160,255,.32);
  --glass:rgba(16,24,45,.62);
  --glass-2:rgba(16,24,45,.78);
  --r-card:18px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(3,8,24,.55);
  --sh-2:0 16px 40px rgba(3,8,24,.65),0 0 24px rgba(46,107,255,.25);
  --container:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Rajdhani","Oxanium","DIN Alternate",ui-monospace,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 82% -8%,rgba(122,92,255,.16),transparent 62%),
    radial-gradient(900px 560px at 6% 4%,rgba(46,107,255,.14),transparent 60%),
    var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:#9FB4FF;text-decoration:none;transition:color .22s ease,text-decoration-color .22s ease;}
a:hover{color:var(--accent);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-sm);}
::selection{background:rgba(46,107,255,.42);color:#fff;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(5,7,14,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.scrolled{
  background:rgba(4,6,13,.95);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  border-bottom-color:transparent;
  box-shadow:0 1px 0 rgba(46,107,255,.35),0 14px 34px rgba(2,5,16,.6);
}
.topbar{
  display:flex;
  align-items:center;
  gap:22px;
  padding:14px 0;
  transition:padding .28s ease;
}
.site-header.scrolled .topbar{padding:8px 0;}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;border-radius:13px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-weight:700;font-size:16px;letter-spacing:.06em;
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 22px rgba(46,107,255,.42);
  transition:transform .28s ease,box-shadow .28s ease;
}
.logo:hover .logo-mark{transform:translateY(-2px);box-shadow:0 12px 28px rgba(46,107,255,.55);}
.logo-text{
  display:flex;flex-direction:column;line-height:1.12;
  font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;
}
.logo-text small{
  font-family:var(--font-num);
  font-size:10px;font-weight:600;letter-spacing:.24em;color:var(--text-3);margin-top:3px;
}
.header-search{
  flex:1 1 auto;max-width:340px;
  display:flex;align-items:center;gap:9px;
  background:rgba(10,15,30,.78);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:8px 16px;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.header-search:focus-within{
  border-color:rgba(46,107,255,.7);
  box-shadow:0 0 0 3px rgba(46,107,255,.16);
  background:rgba(12,18,36,.9);
}
.header-search i{color:var(--text-3);font-size:13px;}
.header-search input{
  flex:1;background:none;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.header-search input::placeholder{color:var(--text-3);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.ghost-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;color:var(--text-2);
  padding:8px 10px;border-radius:var(--r-sm);
  transition:color .2s ease,background .2s ease;
}
.ghost-link:hover{color:var(--accent);background:rgba(0,224,198,.07);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;
  padding:11px 24px;
  min-height:44px;
  position:relative;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 28px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.36),transparent);
  transform:skewX(-18deg);
  transition:left .6s ease;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(46,107,255,.6),inset 0 1px 0 rgba(255,255,255,.24);color:#fff;}
.btn-primary:hover::after{left:130%;}
.btn-outline{
  color:var(--text);
  border:1px solid rgba(46,107,255,.6);
  background:transparent;
}
.btn-outline:hover{background:rgba(46,107,255,.12);transform:translateY(-2px);color:#fff;}
.btn-text{color:var(--text-2);padding:8px 4px;min-height:auto;}
.btn-text:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.btn:active{transform:translateY(1px);}
.btn[disabled]{opacity:.6;filter:saturate(.6);cursor:not-allowed;}

.menu-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);
  color:var(--text);
  place-items:center;
}
.menu-toggle:hover{border-color:var(--line-strong);color:var(--accent);}

.channel-nav-wrap{
  display:flex;align-items:center;gap:16px;
  border-top:1px solid var(--line);
  padding:0 0 0;
}
.channel-nav{
  display:flex;align-items:center;gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:6px 0;
  flex:1 1 auto;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;
  flex:0 0 auto;
  padding:11px 14px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.channel-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .26s ease;
  box-shadow:0 0 10px rgba(46,107,255,.8);
}
.channel-nav a:hover{color:var(--text);background:rgba(46,107,255,.08);}
.channel-nav a:hover::after{transform:scaleX(1);}
.channel-nav a.active{color:#fff;font-weight:600;}
.channel-nav a.active::after{transform:scaleX(1);}

.hot-words{
  display:flex;align-items:center;gap:8px;
  border-left:1px solid var(--line);
  padding-left:16px;
  flex:0 0 auto;
  max-width:44%;
  overflow:hidden;
}
.hot-words span.hot-label{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;
}
.hot-words span.hot-label i{color:var(--warn);}
.hot-scroll{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:6px 0;}
.hot-scroll::-webkit-scrollbar{display:none;}
.hot-scroll a{
  flex:0 0 auto;
  font-size:12px;
  letter-spacing:.03em;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:4px 12px;
  background:rgba(10,15,30,.6);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.hot-scroll a:hover{color:var(--accent);border-color:rgba(0,224,198,.5);background:rgba(0,224,198,.08);}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,5,12,.72);
  backdrop-filter:blur(3px);
  opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:200;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);
  background:linear-gradient(180deg,rgba(10,15,30,.99),rgba(5,7,14,.99));
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .34s cubic-bezier(.22,.68,.32,1);
  z-index:210;
  display:flex;flex-direction:column;gap:20px;
  padding:22px 20px 30px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--text-2);
  display:grid;place-items:center;
}
.drawer-close:hover{color:var(--accent);border-color:var(--line-strong);}
.drawer h4{font-size:13px;letter-spacing:.14em;color:var(--text-3);text-transform:uppercase;font-weight:600;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:15px;
  border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(46,107,255,.1);color:var(--text);}
.drawer-nav a.active{
  color:#fff;background:rgba(46,107,255,.16);
  border-color:rgba(46,107,255,.42);
}
.drawer .drawer-search{
  display:flex;align-items:center;gap:9px;
  background:rgba(10,15,30,.9);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:10px 16px;
}
.drawer .drawer-search input{flex:1;background:none;border:0;outline:none;font-size:14px;}
.drawer .drawer-search i{color:var(--text-3);}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-tags a{
  font-size:12px;color:var(--text-2);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:5px 12px;
}
.drawer-tags a:hover{color:var(--accent);border-color:rgba(0,224,198,.5);}

/* ---------- 内页 Banner ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(102deg,rgba(5,7,14,.95) 4%,rgba(5,7,14,.82) 46%,rgba(10,15,30,.62) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,160,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 22% 40%,#000 12%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 22% 40%,#000 12%,transparent 76%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:56px;}
.breadcrumb{
  display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb i{font-size:10px;color:var(--text-3);}
.breadcrumb .current{color:var(--accent);}
.page-hero .hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;
  color:var(--accent);
  border:1px solid rgba(0,224,198,.42);
  background:rgba(0,224,198,.08);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.16;
  letter-spacing:.01em;
  max-width:900px;
  margin-bottom:16px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--brand),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .hero-sub{
  font-size:16px;color:var(--text-2);max-width:640px;line-height:1.85;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:7px 15px;
  font-size:13px;color:var(--text-2);
  backdrop-filter:blur(10px);
}
.hero-chip i{color:var(--accent);font-size:12px;}
.hero-chip b{font-family:var(--font-num);font-size:15px;color:var(--text);letter-spacing:.04em;}

/* ---------- 主内容布局 ---------- */
.section{padding:80px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:34px;max-width:760px;}
.section-head .eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12px;letter-spacing:.2em;color:var(--brand-2);
  margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15.5px;}

.doc-layout{
  display:grid;
  grid-template-columns:266px minmax(0,1fr);
  gap:36px;
  align-items:start;
}

/* 左侧锚点目录 */
.anchor-card{
  position:sticky;
  top:132px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:22px 18px;
  box-shadow:var(--sh-1);
}
.anchor-card h3{
  font-size:13px;letter-spacing:.16em;color:var(--text-3);
  text-transform:uppercase;font-weight:600;
  font-family:var(--font-num);
  margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.anchor-card h3 i{color:var(--accent);}
.anchor-list{display:flex;flex-direction:column;gap:2px;}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border-radius:var(--r-sm);
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease,padding-left .2s ease;
}
.anchor-list a i{
  font-family:var(--font-num);
  font-size:12px;color:var(--text-3);letter-spacing:.06em;
  transition:color .2s ease;
}
.anchor-list a:hover{background:rgba(46,107,255,.1);color:var(--text);padding-left:15px;}
.anchor-list a:hover i{color:var(--accent);}
.anchor-list a.active{
  color:#fff;background:rgba(46,107,255,.16);
  border-left-color:var(--brand);
  box-shadow:inset 0 0 18px rgba(46,107,255,.16);
}
.anchor-list a.active i{color:var(--accent);}
.anchor-tip{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);line-height:1.75;
}

/* 右侧内容块 */
.content-stack{display:flex;flex-direction:column;gap:26px;}
.content-block{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:30px 30px 34px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
  scroll-margin-top:140px;
}
.content-block:hover{border-color:rgba(46,107,255,.4);box-shadow:var(--sh-2);transform:translateY(-3px);}
.block-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:20px;}
.block-index{
  font-family:var(--font-num);
  font-size:26px;font-weight:700;line-height:1;
  color:rgba(46,107,255,.42);
  letter-spacing:.04em;
  flex:0 0 auto;
  padding-top:5px;
}
.block-head h2{font-size:23px;margin-bottom:6px;}
.block-head .block-desc{font-size:14px;color:var(--text-3);}
.content-block p{color:var(--text-2);font-size:15.5px;line-height:1.9;}
.content-block p + p{margin-top:14px;}
.content-block strong{color:var(--text);font-weight:600;}
.content-block em{
  font-style:normal;color:var(--accent);
  font-family:var(--font-num);letter-spacing:.04em;
}

/* 图文并列 */
.split-media{
  display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;
  margin-top:22px;
}
.media-frame{
  position:relative;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.media-frame img{
  width:100%;height:100%;object-fit:cover;
  aspect-ratio:16/10;
  transition:transform .5s ease;
}
.media-frame:hover img{transform:scale(1.03);}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 42%,rgba(5,7,14,.82));
}
.media-caption{
  position:absolute;left:16px;right:16px;bottom:12px;z-index:2;
  font-size:12.5px;color:var(--text-2);
}

/* 要点编号列表 */
.num-list{display:flex;flex-direction:column;gap:14px;margin-top:20px;}
.num-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;
  background:rgba(10,15,30,.6);
  border:1px solid var(--line);
  border-radius:14px;
  transition:border-color .24s ease,background .24s ease,transform .24s ease;
}
.num-item:hover{border-color:rgba(46,107,255,.42);background:rgba(16,24,45,.78);transform:translateX(3px);}
.num-item .n{
  flex:0 0 auto;
  width:32px;height:32px;border-radius:var(--r-sm);
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:15px;font-weight:700;
  color:var(--accent);
  background:rgba(0,224,198,.1);
  border:1px solid rgba(0,224,198,.34);
}
.num-item h4{font-size:15.5px;margin-bottom:5px;}
.num-item p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0;}

/* 参数对照表 */
.table-shell{
  margin-top:22px;
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  background:rgba(10,15,30,.66);
}
.table-scroll{overflow-x:auto;}
table.param-table{width:100%;border-collapse:collapse;min-width:600px;}
table.param-table thead th{
  position:sticky;top:0;
  background:rgba(16,24,45,.96);
  backdrop-filter:blur(8px);
  font-size:13px;letter-spacing:.08em;
  color:var(--text-2);
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
table.param-table tbody td{
  padding:14px 18px;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.param-table tbody tr:nth-child(odd){background:rgba(255,255,255,.016);}
table.param-table tbody tr:hover{background:rgba(46,107,255,.09);}
table.param-table tbody tr:last-child td{border-bottom:0;}
table.param-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap;}
table.param-table td .mono{font-family:var(--font-num);font-size:15px;color:var(--accent);letter-spacing:.04em;}

/* 时间线 */
.timeline{
  position:relative;
  margin-top:26px;
  padding-left:36px;
}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,rgba(46,107,255,.9),rgba(0,224,198,.65),rgba(122,92,255,.1));
  border-radius:2px;
  box-shadow:0 0 14px rgba(46,107,255,.7);
}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:7px;
  width:12px;height:12px;border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(46,107,255,.16),0 0 14px rgba(46,107,255,.8);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.tl-item:hover::before{border-color:var(--accent);box-shadow:0 0 0 5px rgba(0,224,198,.18),0 0 18px rgba(0,224,198,.9);transform:scale(1.12);}
.tl-date{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);
  font-size:13px;letter-spacing:.1em;
  color:var(--accent);
  background:rgba(0,224,198,.08);
  border:1px solid rgba(0,224,198,.32);
  border-radius:var(--r-pill);
  padding:3px 12px;
  margin-bottom:10px;
}
.tl-item h4{font-size:16.5px;margin-bottom:7px;}
.tl-item p{font-size:14.5px;color:var(--text-2);line-height:1.85;margin:0;}
.tl-tag{
  display:inline-block;margin-left:8px;
  font-size:11.5px;letter-spacing:.06em;
  color:var(--warn);
  border:1px solid rgba(255,176,32,.42);
  background:rgba(255,176,32,.1);
  border-radius:var(--r-pill);
  padding:2px 10px;
  vertical-align:middle;
}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:24px;}
.mini-card{
  background:rgba(10,15,30,.66);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease,background .28s ease;
}
.mini-card:hover{transform:translateY(-3px);border-color:rgba(46,107,255,.45);box-shadow:var(--sh-2);background:rgba(16,24,45,.82);}
.mini-card .mc-icon{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(46,107,255,.24),rgba(122,92,255,.2));
  border:1px solid rgba(46,107,255,.4);
  color:var(--accent);
  margin-bottom:14px;
}
.mini-card h4{font-size:16px;margin-bottom:8px;}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.82;margin:0;}
.mini-card .mc-meta{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.08em;color:var(--text-3);
}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:26px;}
.faq-item{
  background:rgba(10,15,30,.62);
  border:1px solid var(--line);
  border-left:2px solid rgba(46,107,255,.44);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .26s ease,background .26s ease;
}
.faq-item.open{border-color:rgba(46,107,255,.5);border-left-color:var(--accent);background:rgba(16,24,45,.8);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;
  padding:18px 20px;
  font-size:16px;font-weight:600;color:var(--text);
  min-height:44px;
  transition:color .22s ease;
}
.faq-q:hover{color:var(--accent);}
.faq-q .chev{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);
  color:var(--text-2);font-size:11px;
  transition:transform .28s ease,color .22s ease,border-color .22s ease,background .22s ease;
}
.faq-item.open .chev{transform:rotate(180deg);color:var(--accent);border-color:rgba(0,224,198,.5);background:rgba(0,224,198,.1);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease,opacity .3s ease,padding .3s ease;
  opacity:0;
  padding:0 20px;
}
.faq-item.open .faq-a{max-height:420px;opacity:1;padding:0 20px 20px;}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.88;margin:0;}

/* CTA 横幅 */
.cta-banner{
  position:relative;
  overflow:hidden;
  border-radius:22px;
  border:1px solid rgba(46,107,255,.34);
  background-image:linear-gradient(100deg,rgba(5,7,14,.94) 8%,rgba(10,15,30,.82) 52%,rgba(46,107,255,.22) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  box-shadow:var(--sh-2);
  margin-top:34px;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 240px at 88% 18%,rgba(0,224,198,.2),transparent 68%);
  pointer-events:none;
}
.cta-banner .cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-banner h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:10px;}
.cta-banner p{color:var(--text-2);font-size:15px;margin:0;}
.cta-banner .cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;}
.pulse-btn{position:relative;}
.pulse-btn::before{
  content:"";position:absolute;inset:-6px;border-radius:var(--r-pill);
  background:radial-gradient(circle,rgba(46,107,255,.5),transparent 70%);
  animation:pulse 1.8s ease-in-out infinite;
  pointer-events:none;
}
@keyframes pulse{0%,100%{opacity:.36;transform:scale(1);}50%{opacity:.85;transform:scale(1.06);}}
@media (prefers-reduced-motion:reduce){
  .pulse-btn::before{animation:none;opacity:.4;}
  html{scroll-behavior:auto;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* 页脚 */
.site-footer{
  margin-top:88px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,30,.5),rgba(5,7,14,.96));
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,107,255,.75),rgba(0,224,198,.5),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:34px;
  padding:60px 0 44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.9;max-width:340px;}
.site-footer h4{
  font-size:13px;letter-spacing:.14em;color:var(--text-3);
  font-family:var(--font-num);font-weight:600;
  text-transform:uppercase;margin-bottom:16px;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;color:var(--text-2);
  transition:color .2s ease,text-underline-offset .2s ease;
}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text-2);margin-bottom:12px;line-height:1.75;
}
.footer-contact i{color:var(--accent);font-size:13px;margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding:20px 0 32px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--accent);}
.footer-bottom .sep{margin:0 10px;color:var(--line-strong);}

/* 响应式 */
@media (max-width:1180px){
  .hot-words{max-width:36%;}
  .header-search{max-width:260px;}
}
@media (max-width:1024px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hot-words{display:none;}
}
@media (max-width:900px){
  .header-search{display:none;}
  .ghost-link{display:none;}
  .menu-toggle{display:grid;}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:22px;}
  .anchor-card{position:static;padding:16px;}
  .anchor-card h3{margin-bottom:10px;}
  .anchor-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;}
  .anchor-list a{
    flex:0 0 auto;border-left:0;border:1px solid var(--line);
    border-radius:var(--r-pill);padding:8px 14px;font-size:13px;
  }
  .anchor-list a:hover{padding-left:14px;}
  .anchor-list a.active{border-color:rgba(46,107,255,.6);}
  .anchor-tip{display:none;}
  .split-media{grid-template-columns:minmax(0,1fr);}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:30px 26px;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  .page-hero .container{padding-top:38px;padding-bottom:42px;}
  .content-block{padding:24px 20px 28px;}
  .block-head{gap:12px;}
  .block-index{font-size:22px;}
  .block-head h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:44px 0 32px;}
}
@media (max-width:560px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .section{padding:44px 0;}
  .logo-text{font-size:15px;}
  .logo-text small{font-size:9px;letter-spacing:.18em;}
  .logo-mark{width:36px;height:36px;border-radius:11px;font-size:14px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .page-hero h1{font-size:26px;}
  .page-hero .hero-sub{font-size:14.5px;}
  .hero-chip{font-size:12px;padding:6px 12px;}
  .content-block p{font-size:14.5px;}
  .faq-q{font-size:15px;padding:15px 16px;}
  .faq-a p{font-size:14px;}
  .faq-item.open .faq-a{padding:0 16px 18px;}
  .cta-banner{padding:24px 20px;}
  .cta-banner .cta-actions{width:100%;}
  .cta-banner .cta-actions .btn{flex:1 1 auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:380px){
  .logo-text{font-size:14px;}
  .channel-nav a{font-size:13.5px;padding:10px 11px;}
  .hero-meta{gap:8px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1E;
  --bg-2:#101731;
  --brand:#2E6BFF;
  --brand-2:#7A5CFF;
  --accent:#00E0C6;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E8EDF8;
  --text-2:#A9B6D3;
  --text-3:#6E7C9C;
  --line:rgba(120,160,255,.16);
  --line-strong:rgba(120,160,255,.34);
  --glass:rgba(16,24,45,.62);
  --r-card:18px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-1:0 8px 24px rgba(3,8,24,.55);
  --shadow-2:0 16px 40px rgba(3,8,24,.65),0 0 24px rgba(46,107,255,.25);
  --max:1240px;
  --font-body:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Oxanium","Rajdhani",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(46,107,255,.20),transparent 62%),
    radial-gradient(760px 520px at 92% 4%,rgba(122,92,255,.16),transparent 60%),
    linear-gradient(180deg,var(--bg-0),#070B16 42%,var(--bg-0));
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:#9CB6FF;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.4px}
h2{font-size:clamp(24px,3vw,32px);line-height:1.24;font-weight:700}
h3{font-size:clamp(18px,2vw,21px);line-height:1.4;font-weight:600}
p{color:var(--text-2)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(5,7,14,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,107,255,.85),rgba(0,224,198,.7),transparent);
  opacity:0;transition:opacity .3s ease;
}
.site-header.is-scrolled{background:rgba(4,6,12,.92);box-shadow:0 14px 34px rgba(2,6,20,.6)}
.site-header.is-scrolled::after{opacity:1}
.header-inner{display:flex;align-items:center;gap:20px;height:66px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:58px}
.logo{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{
  width:40px;height:40px;border-radius:13px;
  display:grid;place-items:center;
  font-family:var(--font-num);font-weight:700;font-size:15px;letter-spacing:.5px;
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 22px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;letter-spacing:.2px}
.logo-text small{font-family:var(--font-num);font-size:10px;letter-spacing:.22em;color:var(--text-3);font-weight:600;margin-top:3px}
.search-box{
  flex:1 1 auto;max-width:340px;
  display:flex;align-items:center;gap:10px;
  padding:0 14px;height:42px;
  border-radius:var(--r-pill);
  background:rgba(16,24,45,.72);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:rgba(46,107,255,.7);box-shadow:0 0 0 4px rgba(46,107,255,.14)}
.search-box i{color:var(--text-3);font-size:13px}
.search-box input{flex:1;background:transparent;border:0;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(16,24,45,.75);border:1px solid var(--line);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.hamburger span{display:block;width:19px;height:2px;border-radius:2px;background:var(--text);transition:.25s}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.header-sub{
  display:flex;align-items:center;gap:18px;
  padding-bottom:12px;
  border-top:1px solid rgba(120,160,255,.08);
  padding-top:11px;
}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;flex:0 1 auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;flex:0 0 auto;
  padding:9px 15px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.channel-nav a:hover{color:var(--text);background:rgba(46,107,255,.12)}
.channel-nav a.active{
  color:#fff;background:rgba(46,107,255,.16);
  box-shadow:inset 0 0 0 1px rgba(46,107,255,.42),0 0 18px rgba(46,107,255,.24);
}
.channel-nav a.active::after{
  content:"";position:absolute;left:18%;right:18%;bottom:-6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  box-shadow:0 0 12px rgba(0,224,198,.7);
}
.hot-words{display:flex;align-items:center;gap:8px;overflow-x:auto;margin-left:auto;scrollbar-width:none}
.hot-words::-webkit-scrollbar{display:none}
.hot-words::before{
  content:"趋势";flex:0 0 auto;font-size:11px;letter-spacing:.14em;
  color:var(--text-3);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 9px;
}
.hot-word{
  flex:0 0 auto;font-size:12.5px;color:var(--text-2);
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(122,92,255,.10);border:1px solid rgba(122,92,255,.22);
  white-space:nowrap;
}
.hot-word:hover{color:var(--accent);border-color:rgba(0,224,198,.45)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;background:transparent;
  position:relative;overflow:hidden;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 28px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:70%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.42),transparent);
  transform:skewX(-18deg);transition:left .6s ease;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(46,107,255,.58),0 0 26px rgba(122,92,255,.42)}
.btn-primary:hover::after{left:130%}
.btn-outline{
  color:var(--text);border-color:rgba(46,107,255,.55);background:rgba(46,107,255,.04);
}
.btn-outline:hover{background:rgba(46,107,255,.14);border-color:rgba(46,107,255,.9);transform:translateY(-2px)}
.btn-ghost{color:var(--text-2);padding:0 14px}
.btn-ghost:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.btn-warn{color:#20160a;background:linear-gradient(135deg,#FFD06A,var(--warn));box-shadow:0 8px 26px rgba(255,176,32,.36)}
.btn-warn:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(255,176,32,.5)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:76px 0 66px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,7,14,.72),rgba(5,7,14,.92) 70%,var(--bg-0)),
    radial-gradient(720px 380px at 18% 22%,rgba(46,107,255,.32),transparent 64%),
    radial-gradient(560px 340px at 88% 12%,rgba(0,224,198,.16),transparent 66%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.28;
  background-image:linear-gradient(rgba(120,160,255,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.14) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb span.sep{color:var(--text-3);opacity:.6}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.06em;color:var(--accent);
  background:rgba(0,224,198,.10);border:1px solid rgba(0,224,198,.32);
  margin-bottom:18px;
}
.page-hero h1{max-width:900px}
.hero-sub{margin-top:16px;font-size:16.5px;color:var(--text-2);max-width:720px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.stat{
  flex:1 1 190px;min-width:170px;
  padding:16px 18px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
}
.stat b{display:block;font-family:var(--font-num);font-size:22px;font-weight:700;color:#fff;letter-spacing:.5px}
.stat span{font-size:13px;color:var(--text-3)}

/* ---------- section base ---------- */
.section{padding:88px 0}
.section.alt{background:linear-gradient(180deg,rgba(10,15,30,.72),rgba(5,7,14,0))}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--brand);
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(46,107,255,.10);border:1px solid rgba(46,107,255,.28);
  margin-bottom:16px;
}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:15.5px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);margin:0}

/* ---------- ladder ---------- */
.ladder{display:grid;gap:18px}
.ladder-item{
  position:relative;
  display:grid;grid-template-columns:96px 1fr auto;gap:22px;align-items:center;
  padding:24px 26px;
  border-radius:var(--r-card);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.ladder-item:nth-child(2){margin-left:30px}
.ladder-item:nth-child(3){margin-left:60px}
.ladder-item:nth-child(4){margin-left:90px}
.ladder-item:hover{transform:translateY(-3px) translateX(2px);border-color:rgba(46,107,255,.45);box-shadow:var(--shadow-2)}
.ladder-num{
  font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;
  color:rgba(46,107,255,.42);letter-spacing:1px;
}
.ladder-item:nth-child(3) .ladder-num{color:rgba(122,92,255,.45)}
.ladder-item:nth-child(4) .ladder-num{color:rgba(0,224,198,.45)}
.ladder-body h3{margin-bottom:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ladder-body p{font-size:14.5px}
.ladder-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.ladder-list li{
  font-size:12.5px;color:var(--text-2);
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(16,24,45,.8);border:1px solid var(--line);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11.5px;letter-spacing:.06em;font-weight:600;
  padding:4px 11px;border-radius:var(--r-pill);
}
.badge-ok{color:var(--accent);background:rgba(0,224,198,.12);border:1px solid rgba(0,224,198,.3)}
.badge-warn{color:var(--warn);background:rgba(255,176,32,.14);border:1px solid rgba(255,176,32,.36)}
.badge-brand{color:#B9CBFF;background:rgba(46,107,255,.14);border:1px solid rgba(46,107,255,.36)}

/* ---------- compare table ---------- */
.compare-panel{
  border-radius:22px;
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;padding:6px}
.compare{width:100%;border-collapse:separate;border-spacing:0;min-width:760px}
.compare caption{text-align:left;padding:18px 20px 6px;font-size:13px;color:var(--text-3)}
.compare thead th{
  position:sticky;top:0;z-index:3;
  background:rgba(10,15,30,.96);
  font-size:13.5px;font-weight:600;color:var(--text);
  text-align:left;padding:16px 18px;
  border-bottom:1px solid var(--line-strong);
}
.compare tbody th{
  text-align:left;font-size:14px;font-weight:600;color:var(--text-2);
  padding:15px 18px;background:rgba(10,15,30,.42);
  border-bottom:1px solid rgba(120,160,255,.10);
  white-space:nowrap;
}
.compare tbody td{
  padding:15px 18px;font-size:14px;color:var(--text-2);
  border-bottom:1px solid rgba(120,160,255,.10);
  vertical-align:top;
}
.compare tbody tr:nth-child(even) th,
.compare tbody tr:nth-child(even) td{background:rgba(16,24,45,.30)}
.compare tbody tr:hover td{background:rgba(46,107,255,.08);color:var(--text)}
.compare .col-rec{
  position:relative;
  background:rgba(46,107,255,.10);
  box-shadow:inset 1px 0 0 rgba(46,107,255,.55),inset -1px 0 0 rgba(46,107,255,.55);
}
.compare thead .col-rec{
  box-shadow:inset 1px 0 0 rgba(46,107,255,.7),inset -1px 0 0 rgba(46,107,255,.7),inset 0 2px 0 rgba(46,107,255,.9);
  color:#fff;
}
.compare tbody tr:last-child td.col-rec{box-shadow:inset 1px 0 0 rgba(46,107,255,.55),inset -1px 0 0 rgba(46,107,255,.55),inset 0 -2px 0 rgba(46,107,255,.55)}
.compare .col-rec .badge{margin-left:8px;vertical-align:middle}
.table-note{margin-top:16px;font-size:13px;color:var(--text-3)}

/* ---------- horizontal cards ---------- */
.hscroll-wrap{position:relative}
.hscroll{
  display:flex;gap:20px;overflow-x:auto;
  padding:6px 4px 24px;
  scroll-snap-type:x proximity;
  scrollbar-color:rgba(46,107,255,.55) rgba(120,160,255,.08);
}
.hscroll::-webkit-scrollbar{height:8px}
.hscroll::-webkit-scrollbar-track{background:rgba(120,160,255,.08);border-radius:99px}
.hscroll::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:99px}
.act-card{
  flex:0 0 328px;scroll-snap-align:start;
  display:flex;flex-direction:column;
  border-radius:var(--r-card);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.act-card:hover{transform:translateY(-4px);border-color:rgba(46,107,255,.48);box-shadow:var(--shadow-2)}
.act-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.act-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.act-card:hover .act-media img{transform:scale(1.04)}
.act-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,14,.05),rgba(5,7,14,.72))}
.act-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:11.5px;letter-spacing:.05em;font-weight:600;
  padding:4px 11px;border-radius:var(--r-pill);
  color:#fff;background:rgba(5,7,14,.68);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(8px);
}
.act-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.act-body h3{font-size:17.5px}
.act-body p{font-size:14px;line-height:1.7}
.act-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.act-meta i{color:var(--brand-2)}
.act-more{font-size:13.5px;font-weight:600;color:#9CB6FF;display:inline-flex;align-items:center;gap:6px}
.act-more:hover i{transform:translateX(3px)}
.act-more i{transition:transform .22s ease}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(16,24,45,.72),rgba(10,15,30,.62));
  border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.step:hover{transform:translateY(-3px);border-color:rgba(0,224,198,.4);box-shadow:var(--shadow-2)}
.step i{font-size:19px;color:var(--accent);margin-bottom:14px;display:block}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px}
.step::before{
  content:attr(data-step);
  position:absolute;top:18px;right:20px;
  font-family:var(--font-num);font-size:22px;font-weight:700;
  color:rgba(120,160,255,.22);
}

/* ---------- faq grid ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.qa-card{
  padding:24px;
  border-radius:var(--r-card);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-left:3px solid rgba(46,107,255,.55);
  transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.qa-card:hover{transform:translateY(-3px);border-left-color:var(--accent);box-shadow:var(--shadow-2)}
.qa-card h3{font-size:16.5px;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start}
.qa-card h3 i{color:var(--brand-2);font-size:15px;margin-top:5px}
.qa-card p{font-size:14.5px;line-height:1.78}

/* ---------- cta banner ---------- */
.cta-banner{
  position:relative;overflow:hidden;
  border-radius:26px;
  padding:52px 46px;
  border:1px solid rgba(46,107,255,.35);
  background-image:linear-gradient(100deg,rgba(6,10,22,.94),rgba(12,18,40,.78)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  box-shadow:0 22px 60px rgba(3,8,24,.7),0 0 46px rgba(46,107,255,.18) inset;
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
}
.cta-banner::before{
  content:"";position:absolute;top:-60%;right:-10%;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,224,198,.24),transparent 68%);
}
.cta-banner .cta-text{position:relative;z-index:2;max-width:640px}
.cta-banner h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:12px}
.cta-banner p{font-size:15px;color:var(--text-2)}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}
.pulse{animation:pulseGlow 1.8s ease-in-out infinite}
@keyframes pulseGlow{
  0%,100%{box-shadow:0 8px 28px rgba(255,176,32,.34)}
  50%{box-shadow:0 8px 34px rgba(255,176,32,.62),0 0 22px rgba(255,176,32,.42)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;
  background:linear-gradient(180deg,rgba(10,15,30,.9),rgba(5,7,14,1));
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:360px}
.site-footer h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);margin-bottom:12px;line-height:1.7}
.footer-contact i{color:var(--brand-2);margin-top:5px;font-size:13px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid rgba(120,160,255,.12);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--accent)}
.footer-bottom .sep{margin:0 10px;opacity:.5}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;z-index:320;
  width:min(86vw,340px);height:100%;
  background:rgba(7,11,24,.97);
  border-left:1px solid var(--line);
  backdrop-filter:blur(18px);
  transform:translateX(102%);transition:transform .3s ease;
  padding:22px 22px 34px;overflow-y:auto;display:none;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-head span{font-size:14px;color:var(--text-3);letter-spacing:.1em}
.drawer-close{
  width:40px;height:40px;border-radius:12px;background:rgba(16,24,45,.9);
  border:1px solid var(--line);color:var(--text);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  background:rgba(16,24,45,.6);border:1px solid transparent;
}
.drawer-nav a.active{color:#fff;background:rgba(46,107,255,.18);border-color:rgba(46,107,255,.45)}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.drawer-mask{
  position:fixed;inset:0;z-index:300;background:rgba(3,6,14,.66);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .search-box{max-width:240px}
  .hot-words{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .ladder-item:nth-child(2){margin-left:22px}
  .ladder-item:nth-child(3){margin-left:44px}
  .ladder-item:nth-child(4){margin-left:66px}
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap}
  .search-box{display:none}
  .hamburger{display:flex}
  .header-actions .btn-ghost{display:none}
  .header-sub{padding-bottom:10px}
  .channel-nav{gap:4px}
  .drawer{display:block}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
  .page-hero{padding:56px 0 50px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .ladder-item{grid-template-columns:1fr;gap:14px;padding:22px 20px;margin-left:0!important}
  .ladder-num{font-size:34px}
  .qa-grid{grid-template-columns:1fr}
  .compare{min-width:0}
  .compare thead{display:none}
  .compare,.compare tbody,.compare tr,.compare th,.compare td{display:block;width:100%}
  .compare-scroll{padding:14px}
  .compare tbody tr{
    border:1px solid var(--line);border-radius:14px;
    padding:14px 16px;margin-bottom:14px;background:rgba(10,15,30,.62);
  }
  .compare tbody tr:nth-child(even) th,.compare tbody tr:nth-child(even) td{background:transparent}
  .compare tbody th{
    padding:0 0 10px;font-size:15px;color:#fff;background:transparent;border-bottom:1px solid var(--line);
  }
  .compare tbody td{
    display:flex;justify-content:space-between;gap:14px;
    padding:10px 0;border-bottom:1px dashed rgba(120,160,255,.16);background:transparent;
  }
  .compare tbody td::before{content:attr(data-label);color:var(--text-3);font-size:13px;flex:0 0 auto}
  .compare tbody td:last-child{border-bottom:0}
  .compare .col-rec{box-shadow:none;background:rgba(46,107,255,.10);border-radius:8px;padding-left:10px;padding-right:10px}
  .compare tbody tr:last-child td.col-rec{box-shadow:none}
  .cta-banner{padding:34px 24px}
  .act-card{flex:0 0 274px}
}
@media (max-width:560px){
  body{font-size:15px}
  h1{font-size:28px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .stat-row{gap:10px}
  .stat{flex:1 1 100%;min-width:0}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .logo-text{font-size:15px}
  .hero-actions .btn{width:100%}
  .act-card{flex:0 0 82vw}
}
@media (max-width:380px){
  .logo-text small{display:none}
  .btn{padding:0 16px;font-size:14px}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1E;
  --bg-2:#101731;
  --brand:#2E6BFF;
  --brand-2:#7A5CFF;
  --accent:#00E0C6;
  --warn:#FFB020;
  --danger:#FF5C7A;
  --text:#E8EDF8;
  --text-2:#A9B6D3;
  --text-3:#6E7C9C;
  --line:rgba(120,160,255,.16);
  --glass:rgba(16,24,45,.62);
  --edge:rgba(255,255,255,.10);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(3,8,24,.55);
  --shadow-2:0 16px 40px rgba(3,8,24,.65), 0 0 24px rgba(46,107,255,.25);
  --container:1240px;
  --sec:88px;
  --num-font:'Oxanium','Rajdhani','PingFang SC','Microsoft YaHei',sans-serif;
  --cn-font:'PingFang SC','HarmonyOS Sans','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--cn-font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 520px at 12% -8%,rgba(46,107,255,.18),transparent 62%),
    radial-gradient(760px 480px at 92% 4%,rgba(122,92,255,.16),transparent 60%),
    linear-gradient(180deg,#05070E 0%,#070B16 46%,#05070E 100%);
  background-attachment:fixed;
}
img{max-width:100%;display:block;border:0;}
a{color:#9DB4FF;text-decoration:none;transition:color .22s ease,text-decoration-color .22s ease;}
a:hover{color:var(--accent);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(24px,3.1vw,33px);line-height:1.25;font-weight:700;}
h3{font-size:clamp(18px,2vw,21px);line-height:1.4;font-weight:600;}
p{color:var(--text-2);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,9,18,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(5,7,14,.94);
  box-shadow:0 14px 34px rgba(2,5,16,.6);
}
.site-header.scrolled::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,107,255,.75),rgba(0,224,198,.6),transparent);
}
.header-top-inner{
  display:flex;align-items:center;gap:20px;
  height:66px;transition:height .3s ease;
}
.site-header.scrolled .header-top-inner{height:56px;}
.logo{display:inline-flex;align-items:center;gap:11px;flex:none;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  display:grid;place-items:center;
  font-family:var(--num-font);font-weight:700;font-size:15px;letter-spacing:.04em;
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 6px 20px rgba(46,107,255,.45);
}
.logo-text{
  display:flex;flex-direction:column;line-height:1.15;
  font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;
}
.logo-text small{
  font-family:var(--num-font);font-size:10px;font-weight:600;
  letter-spacing:.18em;color:var(--text-3);
}
.logo:hover .logo-text{color:var(--text);}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;min-width:220px;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  background:rgba(12,18,36,.72);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.search-box:focus-within{
  border-color:rgba(46,107,255,.7);
  box-shadow:0 0 0 3px rgba(46,107,255,.18);
}
.search-box i{color:var(--text-3);font-size:13px;}
.search-box input{
  flex:1;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.top-link{
  display:inline-flex;align-items:center;gap:7px;
  height:40px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-2);
  border:1px solid transparent;
  transition:color .22s ease,border-color .22s ease,background .22s ease;
}
.top-link:hover{color:var(--text);border-color:var(--line);background:rgba(46,107,255,.10);}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);font-size:17px;
  align-items:center;justify-content:center;
}
.menu-btn:hover{border-color:rgba(46,107,255,.6);color:var(--accent);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;padding:11px 24px;
  border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 28px rgba(46,107,255,.42),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.34),transparent);
  transform:skewX(-18deg);transition:left .6s ease;
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 14px 34px rgba(46,107,255,.55),inset 0 1px 0 rgba(255,255,255,.22);}
.btn-primary:hover::after{left:130%;}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  color:var(--text);border:1px solid rgba(46,107,255,.55);background:transparent;
}
.btn-outline:hover{background:rgba(46,107,255,.12);color:var(--text);transform:translateY(-2px);border-color:rgba(46,107,255,.9);}
.btn-ghost{color:var(--text-2);padding:11px 14px;}
.btn-ghost:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.btn-sm{min-height:38px;padding:9px 18px;font-size:14px;}

.header-bar{border-top:1px solid rgba(120,160,255,.10);}
.header-bar-inner{
  display:flex;align-items:center;gap:24px;height:52px;
  overflow:hidden;
}
.site-header.scrolled .header-bar-inner{height:46px;}
.channel-nav{display:flex;align-items:center;gap:4px;flex:none;}
.channel-nav a{
  position:relative;
  padding:8px 14px;border-radius:var(--radius-sm);
  font-size:15px;color:var(--text-2);font-weight:500;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.channel-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
  box-shadow:0 0 10px rgba(46,107,255,.7);
}
.channel-nav a:hover{color:var(--text);background:rgba(46,107,255,.10);}
.channel-nav a.active{color:#fff;font-weight:600;}
.channel-nav a.active::after{transform:scaleX(1);}
.hotwords{
  display:flex;align-items:center;gap:10px;margin-left:auto;
  overflow-x:auto;scrollbar-width:none;
  padding:4px 0;
}
.hotwords::-webkit-scrollbar{display:none;}
.hotwords .label{
  font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-3);font-family:var(--num-font);flex:none;
}
.hot-tag{
  flex:none;font-size:12.5px;color:var(--text-2);
  padding:5px 12px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(16,24,45,.55);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.hot-tag:hover{color:var(--accent);border-color:rgba(0,224,198,.5);background:rgba(0,224,198,.08);}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(3,6,14,.7);
  backdrop-filter:blur(3px);opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;z-index:120;
}
.drawer-overlay.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,88vw);z-index:130;
  background:linear-gradient(180deg,#0A0F1E,#070B16);
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  padding:22px 22px 32px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-2);
}
.drawer-close:hover{color:var(--accent);border-color:rgba(0,224,198,.5);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--radius-sm);
  font-size:15px;color:var(--text-2);border:1px solid transparent;
  min-height:44px;display:flex;align-items:center;
}
.drawer-nav a:hover{color:var(--text);background:rgba(46,107,255,.12);border-color:var(--line);}
.drawer-nav a.active{
  color:#fff;font-weight:600;background:rgba(46,107,255,.16);
  border-color:rgba(46,107,255,.55);
}
.drawer-block{margin-bottom:20px;}
.drawer-block h4{
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-3);font-family:var(--num-font);margin-bottom:10px;
}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-cta{width:100%;}

/* ---------- 通用区块 ---------- */
main{display:block;}
.section{padding:var(--sec) 0;position:relative;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--num-font);font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent);
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(0,224,198,.32);background:rgba(0,224,198,.08);
  margin-bottom:16px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:15.5px;max-width:680px;}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,7,14,.72) 0%,rgba(5,7,14,.86) 55%,rgba(5,7,14,.97) 100%),
    repeating-linear-gradient(90deg,rgba(120,160,255,.06) 0 1px,transparent 1px 88px),
    repeating-linear-gradient(0deg,rgba(120,160,255,.05) 0 1px,transparent 1px 88px);
}
.page-hero .container{position:relative;z-index:2;}
.hero-inner{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:44px;align-items:center;padding:74px 0 78px;
}
.breadcrumb{
  display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb i{font-size:10px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;color:var(--accent);
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(0,224,198,.3);background:rgba(0,224,198,.08);
  margin-bottom:18px;
}
.hero-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px var(--accent);
  animation:pulse 2s infinite ease-in-out;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.82);}}
.page-hero h1{margin-bottom:18px;}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--brand),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:16.5px;color:var(--text-2);max-width:640px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;
}
.hero-chip{
  display:inline-flex;align-items:center;gap:9px;
  padding:10px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(16,24,45,.6);
  font-size:13.5px;color:var(--text-2);
}
.hero-chip strong{
  font-family:var(--num-font);font-size:16px;color:var(--accent);font-weight:700;
}
.hero-card{
  padding:26px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--edge);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
}
.hero-card h3{font-size:17px;margin-bottom:6px;}
.hero-card > p{font-size:13.5px;color:var(--text-3);margin-bottom:16px;}
.quick-list{display:flex;flex-direction:column;gap:14px;}
.quick-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding-bottom:14px;border-bottom:1px dashed rgba(120,160,255,.16);
}
.quick-list li:last-child{border-bottom:0;padding-bottom:0;}
.quick-list .num{
  font-family:var(--num-font);font-size:13px;font-weight:700;
  color:var(--brand);background:rgba(46,107,255,.14);
  border:1px solid rgba(46,107,255,.34);
  width:28px;height:28px;border-radius:9px;flex:none;
  display:grid;place-items:center;
}
.quick-list .txt strong{display:block;font-size:14.5px;color:var(--text);font-weight:600;}
.quick-list .txt span{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ---------- 步骤 / 编号要点 ---------- */
.steps-layout{
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);
  gap:52px;align-items:start;
}
.step-list{display:flex;flex-direction:column;gap:18px;}
.step-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 24px;border-radius:var(--radius-lg);
  background:rgba(16,24,45,.5);
  border:1px solid var(--line);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.step-item:hover{
  transform:translateY(-3px);
  border-color:rgba(46,107,255,.42);
  box-shadow:var(--shadow-2);
  background:rgba(18,27,52,.7);
}
.step-num{
  font-family:var(--num-font);font-size:30px;font-weight:700;line-height:1;
  color:rgba(46,107,255,.42);flex:none;width:56px;
  letter-spacing:.02em;
}
.step-body h3{margin-bottom:8px;font-size:18.5px;}
.step-body p{font-size:14.5px;line-height:1.8;}
.step-body .meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;
  padding:4px 11px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(46,107,255,.10);
  color:var(--text-2);
}
.tag.accent{border-color:rgba(0,224,198,.34);background:rgba(0,224,198,.10);color:var(--accent);}
.tag.warn{border-color:rgba(255,176,32,.34);background:rgba(255,176,32,.10);color:var(--warn);}
.side-figure{
  position:sticky;top:130px;
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--edge);
  box-shadow:var(--shadow-1);
  background:var(--bg-1);
}
.side-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease;}
.side-figure:hover img{transform:scale(1.03);}
.side-figure figcaption{
  padding:16px 20px;font-size:13px;color:var(--text-3);
  border-top:1px solid var(--line);background:rgba(10,15,30,.85);
}
.side-note{
  margin-top:22px;padding:22px;border-radius:var(--radius-lg);
  background:linear-gradient(150deg,rgba(46,107,255,.16),rgba(122,92,255,.10));
  border:1px solid rgba(46,107,255,.32);
}
.side-note h4{font-size:15px;margin-bottom:10px;color:#fff;}
.side-note p{font-size:13.5px;color:var(--text-2);margin-bottom:16px;}

/* ---------- 指标卡 ---------- */
.metric-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;
}
.metric-card{
  padding:26px 24px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.metric-card:hover{transform:translateY(-3px);border-color:rgba(46,107,255,.42);box-shadow:var(--shadow-2);}
.metric-card .icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(46,107,255,.14);border:1px solid rgba(46,107,255,.32);
  color:var(--accent);font-size:17px;margin-bottom:16px;
}
.metric-card .value{
  font-family:var(--num-font);font-size:30px;font-weight:700;
  color:#fff;line-height:1.1;margin-bottom:6px;
}
.metric-card h3{font-size:16.5px;margin-bottom:8px;}
.metric-card p{font-size:14px;line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.62fr);
  gap:48px;align-items:start;
}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:rgba(15,22,42,.6);
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.faq-item.open{
  border-color:rgba(46,107,255,.48);
  box-shadow:0 14px 34px rgba(3,8,24,.55);
  background:rgba(18,27,52,.72);
}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;
  padding:20px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  position:relative;
  min-height:56px;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--accent));
  border-radius:2px;opacity:.7;
}
.faq-q:hover{color:var(--accent);}
.faq-q .q-index{
  font-family:var(--num-font);font-size:12px;font-weight:700;
  color:var(--brand);flex:none;letter-spacing:.04em;
}
.faq-q .arrow{
  margin-left:auto;flex:none;color:var(--text-3);font-size:14px;
  transition:transform .3s ease,color .3s ease;
}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);color:var(--accent);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease,opacity .25s ease,padding .3s ease;
  opacity:0;
}
.faq-item.open .faq-a{opacity:1;padding:0 22px 22px 38px;}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.85;}
.faq-side{
  padding:26px;border-radius:var(--radius-lg);
  background:rgba(16,24,45,.58);border:1px solid var(--edge);
  box-shadow:var(--shadow-1);
}
.faq-side h3{font-size:17px;margin-bottom:14px;}
.check-list{display:flex;flex-direction:column;gap:12px;margin:18px 0 22px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text-2);line-height:1.75;
}
.check-list i{color:var(--accent);font-size:13px;margin-top:6px;flex:none;}
.faq-side img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-md);
  margin-top:6px;
}

/* ---------- 表单 ---------- */
.form-layout{
  display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
  gap:48px;align-items:start;
}
.form-panel{
  padding:30px;border-radius:var(--radius-lg);
  background:rgba(16,24,45,.66);
  border:1px solid var(--edge);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13.5px;color:var(--text-2);font-weight:500;}
.field label .req{color:var(--warn);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;
  border-radius:var(--radius-sm);
  background:rgba(8,13,26,.85);
  border:1px solid var(--line);
  color:var(--text);font-size:14.5px;
  outline:none;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
  min-height:46px;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(46,107,255,.75);
  box-shadow:0 0 0 3px rgba(46,107,255,.18);
  background:rgba(10,16,32,.95);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#6E7C9C 50%),linear-gradient(135deg,#6E7C9C 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field.error input,.field.error select,.field.error textarea{
  border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,92,122,.14);
}
.field .err{font-size:12px;color:var(--danger);display:none;}
.field.error .err{display:block;}
.checkbox-row{
  grid-column:1 / -1;display:flex;gap:11px;align-items:flex-start;
  font-size:13.5px;color:var(--text-2);line-height:1.7;
}
.checkbox-row input{
  width:18px;height:18px;min-height:18px;flex:none;margin-top:4px;accent-color:var(--brand);
}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:4px;}
.form-actions .hint{font-size:12.5px;color:var(--text-3);}
.form-success{
  display:none;flex-direction:column;gap:12px;align-items:flex-start;
  padding:28px;border-radius:var(--radius-lg);
  background:linear-gradient(150deg,rgba(0,224,198,.14),rgba(46,107,255,.10));
  border:1px solid rgba(0,224,198,.36);
}
.form-success.show{display:flex;}
.form-success .tick{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:rgba(0,224,198,.18);border:1px solid rgba(0,224,198,.5);
  color:var(--accent);font-size:20px;
}
.form-success h3{font-size:18px;}
.form-success p{font-size:14px;color:var(--text-2);}
.info-list{display:flex;flex-direction:column;gap:20px;}
.info-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px;border-radius:var(--radius-md);
  background:rgba(16,24,45,.45);border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.info-item:hover{border-color:rgba(46,107,255,.4);transform:translateY(-2px);}
.info-item .icon{
  width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:rgba(122,92,255,.14);border:1px solid rgba(122,92,255,.34);
  color:#B7A6FF;font-size:16px;
}
.info-item h3{font-size:16px;margin-bottom:6px;}
.info-item p{font-size:14px;line-height:1.75;}

/* ---------- 页尾 CTA 横幅 ---------- */
.cta-banner{
  position:relative;overflow:hidden;
  border-radius:24px;
  border:1px solid rgba(46,107,255,.34);
  padding:52px 48px;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(5,7,14,.94) 8%,rgba(10,16,34,.86) 52%,rgba(46,107,255,.42) 100%);
}
.cta-banner .inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;}
.cta-banner h2{margin-bottom:10px;font-size:clamp(22px,2.7vw,30px);}
.cta-banner p{font-size:15px;color:var(--text-2);max-width:620px;}
.cta-banner .actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(8,12,24,.9),rgba(5,7,14,1));
  padding:64px 0 0;
  position:relative;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px;}
.site-footer h4{
  font-size:14px;color:var(--text);margin-bottom:16px;font-weight:600;letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.5px;color:var(--text-3);line-height:1.7;
}
.footer-contact i{color:var(--brand);font-size:13px;margin-top:5px;flex:none;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .sep{margin:0 10px;color:var(--text-3);}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero-inner{gap:34px;}
}
@media (max-width:1024px){
  :root{--sec:64px;}
  .hero-inner{grid-template-columns:1fr;padding:60px 0 64px;}
  .steps-layout{grid-template-columns:1fr;gap:36px;}
  .side-figure{position:static;}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-layout{grid-template-columns:1fr;gap:34px;}
  .form-layout{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .search-box{min-width:170px;}
}
@media (max-width:900px){
  .search-box,.top-link.desk-only{display:none;}
  .menu-btn{display:inline-flex;}
  .header-bar{display:none;}
  .header-tools .btn-primary{display:none;}
  .cta-banner{padding:40px 28px;}
}
@media (max-width:768px){
  :root{--sec:56px;}
  .container{padding:0 20px;}
  h1{font-size:clamp(26px,7vw,34px);}
  h2{font-size:clamp(21px,5.4vw,26px);}
  .metric-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .step-item{padding:18px;gap:14px;}
  .step-num{font-size:24px;width:44px;}
  .cta-banner .inner{flex-direction:column;align-items:flex-start;gap:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .hero-actions .btn{width:100%;}
  .hero-chip{font-size:12.5px;padding:9px 13px;}
}
@media (max-width:560px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  body{font-size:15px;}
  .logo-text{font-size:14.5px;}
  .logo-text small{font-size:9px;letter-spacing:.14em;}
  .logo-mark{width:34px;height:34px;font-size:13.5px;border-radius:10px;}
  .faq-q{padding:16px 16px;font-size:15px;}
  .faq-item.open .faq-a{padding:0 16px 18px 32px;}
  .form-panel{padding:20px;}
  .step-body h3{font-size:16.5px;}
  .metric-card .value{font-size:26px;}
}
@media (max-width:380px){
  .logo-text small{display:none;}
  .hero-chip strong{font-size:14px;}
  .btn{padding:11px 18px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}