/* roulang page: index */
:root{
  --ink-900:#05080F;
  --ink-850:#080D18;
  --ink-800:#0C1424;
  --ink-750:#101A2C;
  --line:rgba(122,168,224,0.16);
  --line-strong:rgba(62,240,208,0.42);
  --brand:#3EF0D0;
  --brand-deep:#17A896;
  --accent:#FFC857;
  --text:#E8F1FB;
  --text-mute:#9AAEC6;
  --text-dim:#6C809B;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 24px 48px -28px rgba(0,0,0,.8);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.site-body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 78% -8%,rgba(62,240,208,.10),transparent 62%),
    radial-gradient(700px 420px at 8% 6%,rgba(23,168,150,.08),transparent 60%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.3;}
ul,ol{margin:0;padding:0;list-style:none;}
input,select,textarea{font:inherit;color:inherit;}
::selection{background:rgba(62,240,208,.28);color:#fff;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:88px 0;position:relative;z-index:1;}
.section--tight{padding:64px 0;}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-variant-numeric:tabular-nums;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px;flex-wrap:wrap;}
.section-title{font-size:30px;line-height:1.28;display:flex;align-items:center;gap:14px;}
.section-title::before{content:"";width:4px;height:26px;border-radius:2px;background:var(--brand);box-shadow:0 0 18px rgba(62,240,208,.55);}
.section-desc{color:var(--text-mute);font-size:15px;max-width:600px;margin-top:12px;line-height:1.8;}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:600;transition:opacity .18s ease-out;}
.link-more:hover{opacity:.78;}
.link-more::after{content:"→";transition:transform .18s ease-out;}
.link-more:hover::after{transform:translateX(3px);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;height:44px;padding:0 20px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.btn-primary{background:var(--brand);color:#04120F;box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.45);}
.btn-primary:hover{background:#5BF5DA;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(62,240,208,.65),0 16px 38px -12px rgba(62,240,208,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(62,240,208,.45),0 6px 16px -10px rgba(62,240,208,.5);}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--brand);}
.btn-outline:hover{background:rgba(62,240,208,.08);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text-mute);padding:0 6px;height:auto;}
.btn-ghost:hover{color:var(--brand);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;line-height:1.6;letter-spacing:.02em;}
.badge-brand{background:rgba(62,240,208,.10);color:var(--brand);border:1px solid rgba(62,240,208,.22);}
.badge-accent{background:rgba(255,200,87,.12);color:var(--accent);border:1px solid rgba(255,200,87,.24);}
.badge-mute{background:rgba(122,168,224,.08);color:var(--text-mute);border:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* 页头导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;transition:background .24s ease-out,border-color .24s ease-out,backdrop-filter .24s ease-out;border-bottom:1px solid transparent;background:linear-gradient(180deg,rgba(5,8,15,.72),rgba(5,8,15,0));}
.site-header.is-scrolled{background:rgba(5,8,15,.86);border-bottom-color:var(--line);backdrop-filter:blur(14px);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.logo-mark{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(145deg,rgba(62,240,208,.22),rgba(23,168,150,.10));border:1px solid rgba(62,240,208,.34);box-shadow:0 0 22px -8px rgba(62,240,208,.7);}
.logo-mark svg{width:19px;height:19px;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;color:var(--text);}
.logo-text em{font-style:normal;color:var(--brand);}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-link{position:relative;font-size:14.5px;color:var(--text-mute);padding:6px 0;transition:color .18s ease-out;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .22s ease-out;}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-cta{border-radius:999px;height:42px;padding:0 22px;font-size:14px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.03);place-items:center;cursor:pointer;transition:border-color .18s ease-out,background .18s ease-out;}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(62,240,208,.07);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .22s ease-out;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{position:fixed;top:72px;left:0;right:0;bottom:0;background:rgba(5,8,15,.985);border-top:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:6px;transform:translateY(-10px);opacity:0;pointer-events:none;transition:opacity .22s ease-out,transform .22s ease-out;z-index:79;overflow-y:auto;}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer .nav-link{font-size:16px;padding:14px 4px;border-bottom:1px solid var(--line);color:var(--text);}
.mobile-drawer .nav-link::after{display:none;}
.mobile-drawer .nav-link.is-active{color:var(--brand);}
.mobile-drawer .btn{margin-top:20px;width:100%;height:50px;border-radius:10px;}

/* Hero */
.hero{position:relative;padding:150px 0 84px;overflow:hidden;background-image:linear-gradient(180deg,rgba(5,8,15,.80),rgba(5,8,15,.96)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;background-repeat:no-repeat;}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(122,168,224,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(122,168,224,.06) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);pointer-events:none;}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(62,240,208,.35),transparent);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:6px 14px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(62,240,208,.06);font-size:13px;color:var(--brand);font-weight:600;}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(62,240,208,.16);animation:breathe 3s ease-in-out infinite;}
@keyframes breathe{0%,100%{opacity:.55;transform:scale(.9);}50%{opacity:1;transform:scale(1.08);}}
.hero h1{font-size:46px;line-height:1.24;margin:22px 0 18px;letter-spacing:-0.015em;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{color:var(--text-mute);font-size:16.5px;max-width:540px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;padding-top:22px;border-top:1px solid var(--line);}
.hero-trust li{display:flex;flex-direction:column;gap:2px;}
.hero-trust b{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:20px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;}
.hero-trust span{font-size:12.5px;color:var(--text-dim);}
.hero-card{position:relative;border-radius:var(--radius);padding:26px;background:rgba(255,255,255,.045);backdrop-filter:blur(12px);border:1px solid transparent;background-clip:padding-box;box-shadow:var(--shadow);overflow:hidden;}
.hero-card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(160deg,rgba(62,240,208,.55),rgba(122,168,224,.12) 42%,rgba(255,255,255,.02));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;}
.hero-card .card-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.14;pointer-events:none;}
.hero-card-inner{position:relative;z-index:1;}
.card-status{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-mute);padding-bottom:16px;border-bottom:1px solid var(--line);}
.card-status .live{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;}
.card-status .live i{width:7px;height:7px;border-radius:50%;background:var(--brand);animation:breathe 3s ease-in-out infinite;display:inline-block;}
.hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0;}
.hero-metrics div{padding:14px;border-radius:var(--radius-sm);background:rgba(12,20,36,.65);border:1px solid var(--line);}
.hero-metrics b{display:block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:24px;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-metrics span{font-size:12.5px;color:var(--text-dim);}
.progress-row{margin-top:6px;}
.progress-row .progress-label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--text-mute);margin-bottom:8px;}
.progress-track{height:6px;border-radius:999px;background:rgba(122,168,224,.14);overflow:hidden;}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-deep),var(--brand));box-shadow:0 0 16px rgba(62,240,208,.55);}
.hero-card .foot{margin-top:16px;font-size:12px;color:var(--text-dim);display:flex;justify-content:space-between;gap:10px;}

/* 指标看板 */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.metric-card{position:relative;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .18s ease-out,border-color .18s ease-out;overflow:hidden;}
.metric-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(62,240,208,.7),transparent);}
.metric-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.metric-card .num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:32px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.2;}
.metric-card .num small{font-size:14px;color:var(--text-mute);margin-left:4px;font-weight:500;}
.metric-card .trend{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;color:var(--brand);margin-top:8px;}
.metric-card .trend.down{color:var(--text-dim);}
.metric-card p{font-size:13px;color:var(--text-dim);margin:10px 0 0;line-height:1.7;}

/* Bento 服务矩阵 */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.bento-item{position:relative;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .18s ease-out,border-color .18s ease-out,background .18s ease-out;display:flex;flex-direction:column;gap:12px;}
.bento-item:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--ink-750);}
.bento-num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;color:var(--brand);letter-spacing:.12em;}
.bento-item h3{font-size:19px;}
.bento-item p{font-size:14.5px;color:var(--text-mute);margin:0;line-height:1.8;}
.bento-item .arrow{margin-top:auto;font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;font-weight:600;}
.bento-item .arrow::after{content:"→";transition:transform .18s ease-out;}
.bento-item:hover .arrow::after{transform:translateX(4px);}
.bento-item--lead{grid-column:span 2;grid-row:span 2;padding:0;overflow:hidden;}
.bento-lead-media{position:relative;height:210px;overflow:hidden;}
.bento-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.bento-item--lead:hover .bento-lead-media img{transform:scale(1.03);}
.bento-lead-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.10),rgba(12,20,36,.95));}
.bento-lead-body{padding:0 28px 28px;display:flex;flex-direction:column;gap:12px;margin-top:-34px;position:relative;z-index:1;}

/* CMS 列表 */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cms-card{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease-out,border-color .18s ease-out,background .18s ease-out;}
.cms-card:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--ink-750);}
.cms-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-750);}
.cms-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.cms-card:hover .cms-cover img{transform:scale(1.03);}
.cms-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.cms-card h3{font-size:17.5px;line-height:1.5;}
.cms-card h3 a{transition:color .18s ease-out;}
.cms-card:hover h3 a{color:var(--brand);}
.cms-card .excerpt{font-size:14px;color:var(--text-mute);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--text-dim);}
.cms-meta .time{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;display:inline-flex;align-items:center;gap:7px;}
.cms-meta .time::before{content:"";width:1px;height:11px;background:var(--line-strong);display:inline-block;}
.cms-card--lead{grid-column:span 2;}
.cms-card--lead .cms-cover{aspect-ratio:21/9;}
.cms-card--lead h3{font-size:22px;}
.cms-card--lead .excerpt{-webkit-line-clamp:2;font-size:14.5px;}
.cms-empty{background:var(--ink-800);border:1px dashed var(--line-strong);border-radius:var(--radius);padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;}
.cms-empty p{color:var(--text-mute);margin:0;font-size:15px;}
.cms-empty .ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:rgba(62,240,208,.10);border:1px solid rgba(62,240,208,.24);color:var(--brand);font-family:ui-monospace,monospace;font-size:18px;}

/* 对比 */
.compare{display:grid;grid-template-columns:1fr 1px 1fr;gap:0;align-items:stretch;background:var(--ink-850);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.compare-col{padding:32px 30px;}
.compare-col h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.compare-col.before h3{color:var(--text-mute);}
.compare-col.after h3{color:var(--brand);}
.compare-list li{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-mute);line-height:1.7;}
.compare-list li:last-child{border-bottom:0;}
.compare-list .mark{flex-shrink:0;width:20px;height:20px;border-radius:6px;display:grid;place-items:center;font-size:11px;font-weight:700;margin-top:3px;}
.before .mark{background:rgba(108,128,155,.14);color:var(--text-dim);}
.after .mark{background:rgba(62,240,208,.14);color:var(--brand);}
.after .compare-list li{color:var(--text);}
.compare-divider{background:linear-gradient(180deg,transparent,rgba(62,240,208,.65),transparent);box-shadow:0 0 24px rgba(62,240,208,.35);}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.faq-item{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 22px;transition:border-color .18s ease-out,background .18s ease-out;position:relative;}
.faq-item[open]{border-color:var(--line-strong);background:var(--ink-750);}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 34px 20px 0;font-size:16.5px;font-weight:600;color:var(--text);position:relative;line-height:1.6;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";position:absolute;right:0;top:18px;font-size:20px;font-weight:400;color:var(--brand);transition:transform .2s ease-out;line-height:1;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .answer{padding:0 0 20px;font-size:14.5px;color:var(--text-mute);line-height:1.85;position:relative;}
.faq-item[open] .answer::before{content:"";position:absolute;left:-22px;top:4px;bottom:20px;width:3px;border-radius:2px;background:var(--brand);box-shadow:0 0 14px rgba(62,240,208,.5);}

/* 表单 */
.cta-band{position:relative;background-image:linear-gradient(180deg,rgba(5,8,15,.90),rgba(5,8,15,.97)),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.cta-copy h2{font-size:30px;line-height:1.3;}
.cta-copy p{color:var(--text-mute);margin-top:16px;font-size:15.5px;}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:11px;}
.cta-points li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:var(--text-mute);}
.cta-points li::before{content:"✓";color:var(--brand);font-weight:700;font-size:13px;margin-top:2px;}
.form-card{position:relative;border-radius:var(--radius);padding:30px;background:rgba(255,255,255,.045);backdrop-filter:blur(12px);box-shadow:var(--shadow);border:1px solid transparent;background-clip:padding-box;}
.form-card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(160deg,rgba(62,240,208,.55),rgba(122,168,224,.12) 45%,rgba(255,255,255,.02));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;}
.form-card h3{font-size:19px;margin-bottom:6px;}
.form-card .form-note{font-size:13px;color:var(--text-dim);margin-bottom:20px;}
.field{margin-bottom:16px;position:relative;z-index:1;}
.field label{display:block;font-size:13px;color:var(--text-mute);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;background:rgba(8,13,24,.85);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14.5px;color:var(--text);transition:border-color .18s ease-out,box-shadow .18s ease-out;outline:none;}
.field textarea{min-height:104px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#54677F;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(62,240,208,.14);}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-mute) 50%),linear-gradient(135deg,var(--text-mute) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.form-privacy{font-size:12px;color:var(--text-dim);margin-top:12px;line-height:1.7;}
.form-msg{font-size:13px;color:var(--accent);margin-top:10px;min-height:18px;}

/* 页脚 */
.site-footer{background:var(--ink-850);position:relative;z-index:1;}
.site-footer::before{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(62,240,208,.45),rgba(122,168,224,.2),transparent);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px;}
.footer-brand p{font-size:14px;color:var(--text-mute);margin:18px 0;line-height:1.85;max-width:330px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:.03em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:13.8px;color:var(--text-mute);transition:color .18s ease-out;}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{font-size:13.8px;color:var(--text-mute);display:flex;gap:9px;align-items:flex-start;line-height:1.8;}
.footer-contact li b{color:var(--text);font-weight:600;}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--text-dim);}
.footer-bottom a{color:var(--text-mute);}
.footer-bottom a:hover{color:var(--brand);}

@media (max-width:1180px){
  .nav-links{gap:18px;}
  .nav-link{font-size:13.5px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .hero{padding:120px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:36px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-item--lead{grid-column:span 2;grid-row:auto;}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
  .cms-card--lead{grid-column:span 2;}
  .compare{grid-template-columns:1fr;}
  .compare-divider{height:1px;width:100%;background:linear-gradient(90deg,transparent,rgba(62,240,208,.6),transparent);box-shadow:none;}
  .cta-grid{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .section{padding:68px 0;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .logo-text{font-size:15px;}
  .hero{padding:108px 0 52px;}
  .hero h1{font-size:27px;line-height:1.34;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:18px;}
  .hero-trust b{font-size:17px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:10px;}
  .hero-metrics b{font-size:20px;}
  .section{padding:52px 0;}
  .section-title{font-size:22px;}
  .section-head{margin-bottom:26px;}
  .metric-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .metric-card{padding:18px;}
  .metric-card .num{font-size:24px;}
  .bento{grid-template-columns:1fr;}
  .bento-item--lead{grid-column:span 1;}
  .bento-lead-media{height:170px;}
  .bento-lead-body{padding:0 20px 22px;}
  .cms-grid{grid-template-columns:1fr;}
  .cms-card--lead{grid-column:span 1;}
  .cms-card--lead .cms-cover{aspect-ratio:16/9;}
  .cms-card--lead h3{font-size:18px;}
  .faq-grid{grid-template-columns:1fr;}
  .faq-item{padding:0 18px;}
  .faq-item summary{font-size:15.5px;padding:17px 30px 17px 0;}
  .faq-item[open] .answer::before{left:-18px;}
  .compare-col{padding:24px 20px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-copy h2{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink-900:#05080F;
  --ink-850:#080D18;
  --ink-800:#0C1424;
  --line:rgba(122,168,224,.16);
  --line-strong:rgba(62,240,208,.42);
  --brand:#3EF0D0;
  --brand-deep:#17A896;
  --accent:#FFC857;
  --text:#E8F1FB;
  --text-mute:#9AAEC6;
  --text-dim:#6C809B;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 24px 48px -28px rgba(0,0,0,.8);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .22s ease-out,border-color .22s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.9);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(62,240,208,.1);
  border:1px solid var(--line-strong);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--brand);margin-left:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-mute);
  border-radius:999px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 20px;border-radius:999px;
  background:var(--brand);color:#04160F;font-size:15px;font-weight:700;
  box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -14px rgba(62,240,208,.55);
  transition:transform .18s ease-out,filter .18s ease-out;
  flex-shrink:0;
}
.nav-cta:hover{filter:brightness(1.08);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(1px)}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:11px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  align-items:center;justify-content:center;
  flex-direction:column;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer-cta{display:none}

/* ============ 主体布局 ============ */
.article-wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:40px;
  padding-top:32px;
  padding-bottom:88px;
  align-items:start;
}
.article-main{min-width:0}

/* 面包屑 */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-dim);
  padding:0 2px 20px;
}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(122,168,224,.45)}
.breadcrumb .current{color:var(--brand);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 文章头 */
.article-head{
  position:relative;
  padding:34px 32px 30px;
  border-radius:20px;
  border:1px solid var(--line);
  background-image:linear-gradient(120deg,rgba(5,8,15,.94),rgba(8,13,24,.86)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(122,168,224,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(122,168,224,.055) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.6;
}
.article-head > *{position:relative;z-index:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;line-height:1.6;
  border:1px solid transparent;
}
.badge-brand{background:rgba(62,240,208,.1);color:var(--brand);border-color:rgba(62,240,208,.28)}
.badge-mute{background:rgba(122,168,224,.1);color:var(--text-mute);border-color:var(--line)}
.badge-accent{background:rgba(255,200,87,.12);color:var(--accent);border-color:rgba(255,200,87,.3)}
.article-head h1{
  font-size:38px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
  margin:16px 0 18px;color:var(--text);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--text-dim);
  padding-top:16px;border-top:1px solid var(--line);
}
.meta-row b{color:var(--text-mute);font-weight:600}
.meta-row .mono{color:var(--text)}
.meta-sep{width:1px;height:12px;background:var(--line)}
.article-lead{
  margin-top:18px;font-size:15px;line-height:1.8;
  color:var(--text-mute);
  padding-left:14px;border-left:2px solid rgba(62,240,208,.45);
}

/* 正文排版 */
.article-body{
  margin-top:32px;
  font-size:16px;line-height:1.9;
  color:rgba(232,241,251,.86);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  font-size:26px;line-height:1.45;font-weight:700;color:var(--text);
  margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;
  background:var(--brand);border-radius:3px;
}
.article-body h3{
  font-size:19px;line-height:1.55;font-weight:600;color:var(--text);
  margin:1.7em 0 .6em;
}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:1.4em 0 .5em}
.article-body p{margin:0 0 1.2em}
.article-body strong{color:var(--text);font-weight:700}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:1.4em 0;padding:14px 20px;
  border-left:3px solid var(--brand);
  background:rgba(62,240,208,.06);
  border-radius:0 12px 12px 0;
  color:var(--text-mute);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(62,240,208,.35)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body img{border-radius:var(--radius-sm);margin:1.4em 0;width:100%;height:auto}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--text-dim);text-align:center;margin-top:8px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14.5px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th{background:var(--ink-800);color:var(--text);text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);font-weight:600}
.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--text-mute)}
.article-body tr:last-child td{border-bottom:none}

/* 空态 */
.empty-state{
  margin-top:32px;padding:44px 28px;text-align:center;
  background:var(--ink-800);border:1px dashed var(--line);
  border-radius:var(--radius);
}
.empty-state h2{font-size:22px;font-weight:700;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-mute);font-size:15px;margin-bottom:22px}

/* 文章结尾 */
.article-foot{
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,filter .18s ease-out,border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
}
.btn-primary{
  background:var(--brand);color:#04160F;
  box-shadow:0 0 0 1px rgba(62,240,208,.45),0 12px 32px -14px rgba(62,240,208,.5);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn:focus-visible,.nav-cta:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,.rel-card:focus-visible,.side-links a:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:98px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow);
}
.side-card h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:14px}
.side-links{list-style:none;margin:0;padding:0}
.side-links li + li{border-top:1px solid var(--line)}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 2px;font-size:14.5px;color:var(--text-mute);
}
.side-links a:hover{color:var(--brand)}
.side-links a i{font-style:normal;color:var(--text-dim);font-size:13px;transition:transform .18s ease-out}
.side-links a:hover i{color:var(--brand);transform:translateX(3px)}
.side-cta{
  background-image:linear-gradient(160deg,rgba(62,240,208,.12),rgba(12,20,36,.9) 62%),url("/assets/images/coverpic/cover-5.png");
  background-size:cover;background-position:center;
  border-color:rgba(62,240,208,.28);
}
.side-cta p{font-size:14px;color:var(--text-mute);margin-bottom:18px;line-height:1.75}
.side-note{display:block;margin-top:12px;font-size:12px;color:var(--text-dim);text-align:center}

/* ============ 相关推荐 ============ */
.related{padding-top:8px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:22px;
}
.section-head h2{font-size:24px;font-weight:700;color:var(--text)}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--line-strong);background:#0E1729}
.rel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-850)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.rel-card:hover .rel-cover img{transform:scale(1.04)}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.55;color:var(--text)}
.rel-body p{font-size:13.5px;line-height:1.7;color:var(--text-mute);flex:1}
.rel-meta{font-size:12.5px;color:var(--text-dim);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .rel-meta{color:var(--brand)}

/* ============ CTA 条带 ============ */
.cta-band{
  margin-top:64px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(110deg,rgba(8,13,24,.96),rgba(5,8,15,.88)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding-top:44px;padding-bottom:44px;flex-wrap:wrap;
}
.cta-inner h2{font-size:24px;font-weight:700;color:var(--text);margin-bottom:8px}
.cta-inner p{font-size:14.5px;color:var(--text-mute);max-width:560px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-850);border-top:1px solid var(--line)}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:34px;
  padding:56px 0 34px;
}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--text-mute);margin-top:16px;max-width:330px}
.footer-brand .tag-row{margin-top:16px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:15px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:9px 0;font-size:14px;color:var(--text-mute)}
.footer-col a{color:var(--text-mute)}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:6px;font-size:13.5px}
.footer-contact span{color:var(--text-dim);flex-shrink:0}
.footer-contact b{color:var(--text-mute);font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding:18px 0 30px;
  font-size:13px;color:var(--text-dim);
}

/* ============ 响应式 ============ */
@media (max-width:1120px){
  .article-wrap{grid-template-columns:minmax(0,1fr) 290px;gap:28px}
  .article-head h1{font-size:32px}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;left:0;right:0;top:74px;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:20px 24px 32px;
    background:rgba(5,8,15,.98);
    border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity .2s ease-out,transform .2s ease-out;
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:none;pointer-events:auto}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:10px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(62,240,208,.08)}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .drawer-cta{
    display:flex;align-items:center;justify-content:center;
    margin-top:18px;height:50px;border-radius:12px;
    background:var(--brand);color:#04160F;font-weight:700;font-size:16px;
  }
  .article-wrap{grid-template-columns:minmax(0,1fr);gap:32px;padding-bottom:64px}
  .article-side{position:static;flex-direction:column}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .nav-inner{height:66px;gap:12px}
  .nav-links{top:66px;padding:18px 18px 28px}
  .logo-mark{width:34px;height:34px;border-radius:10px}
  .logo-text{font-size:15.5px}
  .article-head{padding:24px 20px}
  .article-head h1{font-size:26px;line-height:1.35}
  .article-lead{font-size:14px}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:17.5px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{padding-top:36px;padding-bottom:36px}
  .cta-inner h2{font-size:20px}
  .article-wrap{padding-top:22px}
}
@media (max-width:520px){
  .article-head h1{font-size:23px}
  .meta-row{font-size:12.5px;gap:9px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .article-foot{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#05080F;
  --ink-850:#080D18;
  --ink-800:#0C1424;
  --ink-750:#101A2E;
  --line:rgba(122,168,224,.16);
  --line-strong:rgba(62,240,208,.42);
  --brand:#3EF0D0;
  --brand-deep:#17A896;
  --accent:#FFC857;
  --text:#E8F1FB;
  --text-mute:#9AAEC6;
  --text-dim:#6C809B;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow:0 24px 48px -28px rgba(0,0,0,.8);
  --container:1200px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(5,8,15,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .22s ease-out,border-color .22s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.9);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(62,240,208,.18),rgba(62,240,208,.04));
  border:1px solid var(--line-strong);
}
.logo-mark svg{width:19px;height:19px}
.logo-text{font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.2;white-space:nowrap}
.logo-text em{display:block;font-style:normal;font-size:11px;font-weight:500;color:var(--brand);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--text-mute);
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(122,168,224,.07)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{
  margin-left:8px;height:44px;padding:0 22px;border-radius:999px;
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:#04120F;
  background:var(--brand);
  box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.45);
  transition:transform .18s ease-out,filter .18s ease-out,box-shadow .18s ease-out;
  white-space:nowrap;
}
.nav-cta:hover{filter:brightness(1.08);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(1px)}
.nav-cta:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.menu-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:10px;
  background:rgba(122,168,224,.08);border:1px solid var(--line);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
  transition:background .18s ease-out;
}
.menu-toggle:hover{background:rgba(122,168,224,.16)}
.mobile-drawer{
  position:fixed;inset:72px 0 0 0;z-index:70;
  background:rgba(5,8,15,.98);
  padding:24px;display:none;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer .nav-link{
  display:block;padding:14px 12px;font-size:16px;border-bottom:1px solid var(--line);
}
.mobile-drawer .nav-link::after{display:none}
.mobile-drawer .nav-cta{
  margin:20px 0 0;width:100%;justify-content:center;height:52px;font-size:15px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,background .18s ease-out,filter .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-lg{height:52px;padding:0 28px;font-size:15px}
.btn-primary{
  background:var(--brand);color:#04120F;
  box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.45);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--brand);
  border-color:rgba(62,240,208,.38);
}
.btn-ghost:hover{background:rgba(62,240,208,.1);border-color:var(--line-strong);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{
  background:transparent;color:var(--text-mute);padding:0 4px;height:auto;
}
.btn-text:hover{color:var(--brand)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:132px 0 64px;
  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:.30;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,8,15,.82) 0%,rgba(5,8,15,.94) 62%,var(--ink-900) 100%),
    linear-gradient(90deg,rgba(5,8,15,.9) 0%,rgba(5,8,15,.55) 100%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-dim);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-mute);transition:color .18s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-dim)}
.breadcrumb .current{color:var(--brand)}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--brand);
  padding:5px 12px;border-radius:6px;
  background:rgba(62,240,208,.1);border:1px solid rgba(62,240,208,.22);
  margin-bottom:18px;
}
.hero-title{
  font-size:44px;line-height:1.24;font-weight:700;letter-spacing:-.01em;
  margin:0 0 18px;
}
.hero-title span{color:var(--brand)}
.hero-lead{
  font-size:16px;line-height:1.85;color:var(--text-mute);
  max-width:36em;margin:0 0 26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:26px;
  font-size:13px;color:var(--text-dim);
}
.hero-note b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:20px;color:var(--brand);font-weight:600}

.data-card{
  position:relative;
  padding:26px;border-radius:var(--radius-lg);
  background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.data-card::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  opacity:.7;
}
.data-card-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-bottom:20px;
}
.data-card-head h2{font-size:14px;font-weight:600;margin:0;color:var(--text)}
.status-dot{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;color:var(--brand);font-family:var(--mono);
}
.status-dot i{
  width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 4px rgba(62,240,208,.14);
  animation:breathe 3s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{opacity:1;box-shadow:0 0 0 4px rgba(62,240,208,.14)}
  50%{opacity:.55;box-shadow:0 0 0 8px rgba(62,240,208,.06)}
}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.mini-item{
  padding:14px;border-radius:var(--radius-md);
  background:rgba(12,20,36,.72);border:1px solid var(--line);
}
.mini-item .k{font-size:12px;color:var(--text-dim);display:block;margin-bottom:4px}
.mini-item .v{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:22px;font-weight:600;color:var(--text)}
.mini-item .v em{font-style:normal;font-size:12px;color:var(--text-mute);margin-left:3px}
.progress-wrap{margin-top:20px}
.progress-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-dim);margin-bottom:8px}
.progress-track{height:6px;border-radius:99px;background:rgba(122,168,224,.14);overflow:hidden}
.progress-fill{height:100%;width:75%;border-radius:99px;background:linear-gradient(90deg,var(--brand-deep),var(--brand));box-shadow:0 0 14px rgba(62,240,208,.5)}

/* ---------- sections ---------- */
.section{padding:80px 0}
.section-alt{background:var(--ink-850);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .tag-line{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--brand);margin-bottom:14px;
}
.section-head .tag-line::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px}
.section-title{font-size:30px;line-height:1.34;font-weight:700;letter-spacing:-.01em;margin:0 0 14px}
.section-desc{font-size:15px;line-height:1.9;color:var(--text-mute);margin:0;max-width:40em}

/* ---------- steps ---------- */
.step-list{display:flex;flex-direction:column;gap:22px}
.step-row{
  display:grid;grid-template-columns:320px 1fr;gap:30px;align-items:center;
  padding:22px;border-radius:var(--radius-lg);
  background:var(--ink-800);border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .18s ease-out,transform .18s ease-out,background .18s ease-out;
}
.step-row:hover{border-color:var(--line-strong);transform:translateY(-2px);background:var(--ink-750)}
.step-media{
  position:relative;border-radius:var(--radius-md);overflow:hidden;aspect-ratio:16/9;
  background:var(--ink-750);
}
.step-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.step-row:hover .step-media img{transform:scale(1.03)}
.step-no{
  position:absolute;top:10px;left:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  padding:3px 9px;border-radius:6px;
  background:rgba(5,8,15,.78);color:var(--brand);
  border:1px solid rgba(62,240,208,.3);
}
.step-body h3{font-size:20px;font-weight:600;margin:0 0 10px}
.step-body p{font-size:15px;line-height:1.85;color:var(--text-mute);margin:0 0 12px}
.step-meta{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:6px;font-size:12px;line-height:1.6;
  background:rgba(62,240,208,.1);color:var(--brand);
  border:1px solid rgba(62,240,208,.2);
}
.badge-mute{background:rgba(122,168,224,.1);color:var(--text-mute);border-color:var(--line)}
.badge-accent{background:rgba(255,200,87,.12);color:var(--accent);border-color:rgba(255,200,87,.28)}

/* ---------- notice ---------- */
.notice-bar{
  margin-top:28px;
  display:flex;flex-direction:column;gap:8px;
  padding:20px 22px;border-radius:var(--radius-md);
  background:rgba(255,200,87,.06);
  border:1px solid rgba(255,200,87,.4);
}
.notice-bar .notice-title{
  display:flex;align-items:center;gap:10px;
  font-size:15px;font-weight:600;color:var(--accent);
}
.notice-bar .notice-title i{
  display:inline-flex;width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.notice-bar p{margin:0;font-size:14px;line-height:1.85;color:var(--text-mute)}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:start}
.check-list{display:grid;gap:0;border-top:1px solid var(--line)}
.check-item{
  display:grid;grid-template-columns:34px 1fr;gap:16px;
  padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background .18s ease-out;
}
.check-item:hover{background:rgba(122,168,224,.04)}
.check-item .no{
  font-family:var(--mono);font-size:14px;color:var(--brand);
  padding-top:2px;
}
.check-item h4{margin:0 0 6px;font-size:16px;font-weight:600}
.check-item p{margin:0;font-size:14px;line-height:1.8;color:var(--text-mute)}
.side-card{
  padding:26px;border-radius:var(--radius-lg);
  background:var(--ink-800);border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.side-card h3{font-size:18px;margin:0 0 14px;font-weight:600}
.side-card p{font-size:14px;line-height:1.85;color:var(--text-mute);margin:0 0 18px}
.stat-line{
  display:flex;align-items:baseline;justify-content:space-between;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--text-mute);
}
.stat-line:last-of-type{border-bottom:0}
.stat-line b{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--brand);font-size:18px;font-weight:600}

/* ---------- cross nav ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cross-card{
  display:flex;flex-direction:column;
  padding:22px;border-radius:var(--radius-lg);
  background:var(--ink-800);border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .18s ease-out,transform .18s ease-out,background .18s ease-out;
}
.cross-card:hover{border-color:var(--line-strong);transform:translateY(-2px);background:var(--ink-750)}
.cross-card .thumb{
  border-radius:var(--radius-md);overflow:hidden;aspect-ratio:16/9;margin-bottom:16px;
}
.cross-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.cross-card:hover .thumb img{transform:scale(1.03)}
.cross-card h3{font-size:17px;margin:0 0 8px;font-weight:600}
.cross-card p{font-size:14px;line-height:1.8;color:var(--text-mute);margin:0 0 16px}
.cross-card .arrow{font-size:13px;color:var(--brand);margin-top:auto;display:inline-flex;align-items:center;gap:6px}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:880px}
.faq-item{
  border-radius:var(--radius-md);
  background:var(--ink-800);border:1px solid var(--line);
  overflow:hidden;transition:border-color .18s ease-out;
}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;
  border-left:3px solid transparent;
  transition:border-color .18s ease-out,color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{border-left-color:var(--brand);color:var(--brand)}
.faq-item summary .icon{
  flex-shrink:0;width:20px;height:20px;position:relative;
  transition:transform .2s ease-out;
}
.faq-item summary .icon::before,
.faq-item summary .icon::after{
  content:"";position:absolute;background:var(--text-mute);border-radius:2px;
  transition:background .18s ease-out;
}
.faq-item summary .icon::before{left:0;top:9px;width:20px;height:2px}
.faq-item summary .icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] summary .icon{transform:rotate(135deg)}
.faq-item[open] summary .icon::before,
.faq-item[open] summary .icon::after{background:var(--brand)}
.faq-body{padding:0 22px 20px 22px;font-size:15px;line-height:1.85;color:var(--text-mute)}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  padding:52px 44px;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(23,168,150,.16),rgba(12,20,36,.9) 55%);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.cta-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(62,240,208,.24),transparent 68%);
  pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr .9fr;gap:36px;align-items:center}
.cta-grid h2{font-size:28px;line-height:1.38;margin:0 0 14px;font-weight:700}
.cta-grid p{font-size:15px;line-height:1.9;color:var(--text-mute);margin:0;max-width:36em}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-850);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(62,240,208,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-dim);margin:0 0 16px;max-width:30em}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.footer-col h4{font-size:14px;font-weight:600;margin:0 0 16px;color:var(--text)}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-dim);transition:color .18s ease-out}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--text-dim)}
.footer-contact b{color:var(--text-mute);font-weight:500;font-family:var(--mono)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-dim);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .menu-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .page-hero{padding:118px 0 54px}
  .hero-title{font-size:36px}
  .step-row{grid-template-columns:260px 1fr;gap:24px}
  .check-grid{grid-template-columns:1fr;gap:24px}
  .cross-grid{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .hero-title{font-size:30px}
  .section-title{font-size:24px}
  .step-row{grid-template-columns:1fr;gap:18px;padding:18px}
  .cross-grid{grid-template-columns:1fr}
  .cta-panel{padding:36px 24px}
  .cta-grid h2{font-size:22px}
  .hero-note{gap:18px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .page-hero{padding:104px 0 44px}
  .hero-title{font-size:26px}
  .hero-lead{font-size:15px}
  .mini-grid{gap:10px}
  .mini-item .v{font-size:18px}
  .footer-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:15px;padding:16px 18px}
  .faq-body{padding:0 18px 18px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
    --ink-900:#05080F;
    --ink-850:#080D18;
    --ink-800:#0C1424;
    --line:rgba(122,168,224,.16);
    --line-strong:rgba(62,240,208,.42);
    --brand:#3EF0D0;
    --brand-deep:#17A896;
    --accent:#FFC857;
    --text:#E8F1FB;
    --text-mute:#9AAEC6;
    --text-dim:#6C809B;
    --radius-lg:16px;
    --radius-md:12px;
    --radius-sm:10px;
    --shadow-card:0 24px 48px -28px rgba(0,0,0,.8);
    --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  ::selection{background:rgba(62,240,208,.28);color:#fff;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

  /* ============ Header ============ */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(5,8,15,.42);
    border-bottom:1px solid transparent;
    transition:background .22s ease-out,border-color .22s ease-out,backdrop-filter .22s ease-out;
    backdrop-filter:blur(10px);
  }
  .site-header.is-scrolled{
    background:rgba(5,8,15,.9);
    border-bottom-color:var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:28px;height:76px;}
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:38px;height:38px;border-radius:11px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(160deg,rgba(62,240,208,.16),rgba(12,20,36,.9));
    border:1px solid rgba(62,240,208,.32);
  }
  .logo-mark svg{width:21px;height:21px;}
  .logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.2;}
  .logo-text em{display:block;font-style:normal;font-size:11px;font-weight:500;color:var(--brand);letter-spacing:.16em;margin-top:2px;}
  .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
  .nav-link{
    position:relative;display:inline-block;
    padding:9px 14px;border-radius:9px;
    font-size:14.5px;color:var(--text-mute);
    transition:color .18s ease-out,background .18s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left center;
    transition:transform .22s ease-out;border-radius:2px;
  }
  .nav-link:hover{color:var(--text);background:rgba(122,168,224,.07);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand);}
  .nav-link.is-active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-sm);
    font-size:14.5px;font-weight:600;letter-spacing:.01em;
    transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
    border:1px solid transparent;white-space:nowrap;
  }
  .btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
  .btn-primary{
    background:var(--brand);color:#04120F;
    box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.45);
  }
  .btn-primary:hover{background:#54f6d9;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(62,240,208,.6),0 16px 38px -12px rgba(62,240,208,.6);}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(62,240,208,.4),0 6px 18px -10px rgba(62,240,208,.4);}
  .btn-ghost{
    background:transparent;color:var(--brand);border-color:rgba(62,240,208,.38);
  }
  .btn-ghost:hover{background:rgba(62,240,208,.1);border-color:var(--line-strong);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-quiet{background:transparent;color:var(--text-mute);border-color:var(--line);}
  .btn-quiet:hover{color:var(--text);border-color:rgba(122,168,224,.34);transform:translateY(-1px);}
  .btn-nav{height:40px;padding:0 18px;border-radius:999px;font-size:14px;}
  .nav-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);align-items:center;justify-content:center;}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;}
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  .drawer{
    position:fixed;inset:0;z-index:90;background:rgba(5,8,15,.97);
    display:flex;flex-direction:column;padding:24px;
    transform:translateY(-100%);opacity:0;pointer-events:none;
    transition:transform .26s ease-out,opacity .26s ease-out;
    backdrop-filter:blur(14px);
  }
  .drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
  .drawer-close{width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);color:var(--text);font-size:20px;display:flex;align-items:center;justify-content:center;}
  .drawer-links{display:flex;flex-direction:column;gap:4px;}
  .drawer-links a{
    padding:15px 4px;font-size:17px;color:var(--text-mute);border-bottom:1px solid var(--line);
  }
  .drawer-links a.is-active{color:var(--brand);}
  .drawer-cta{margin-top:auto;padding-top:24px;}
  .drawer-cta .btn{width:100%;height:52px;border-radius:999px;}

  /* ============ Hero ============ */
  .page-hero{
    position:relative;
    min-height:332px;
    display:flex;align-items:center;
    padding:56px 0 52px;
    background:
      linear-gradient(rgba(5,8,15,.88),rgba(5,8,15,.95)),
      url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(122,168,224,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(122,168,224,.055) 1px,transparent 1px);
    background-size:56px 56px;
    mask-image:radial-gradient(circle at 70% 40%,#000 0%,transparent 72%);
  }
  .hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.55fr 1fr;gap:48px;align-items:center;}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:18px;}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:rgba(122,168,224,.4);}
  .crumb .now{color:var(--brand);}
  .page-hero h1{
    font-size:44px;line-height:1.24;font-weight:700;letter-spacing:-.01em;
    max-width:15em;
  }
  .page-hero h1 .hl{color:var(--brand);}
  .hero-sub{
    margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-mute);max-width:34em;
  }
  .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:6px;font-size:12px;font-weight:600;letter-spacing:.02em;
  }
  .badge-brand{background:rgba(62,240,208,.1);color:var(--brand);border:1px solid rgba(62,240,208,.22);}
  .badge-accent{background:rgba(255,200,87,.12);color:var(--accent);border:1px solid rgba(255,200,87,.24);}
  .badge-mute{background:rgba(122,168,224,.09);color:var(--text-mute);border:1px solid var(--line);}
  .glass-card{
    position:relative;
    border-radius:var(--radius-lg);
    padding:26px;
    background:linear-gradient(165deg,rgba(255,255,255,.07),rgba(255,255,255,.028));
    border:1px solid rgba(122,168,224,.2);
    backdrop-filter:blur(10px);
    box-shadow:var(--shadow-card);
  }
  .glass-card::before{
    content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;
    background:linear-gradient(180deg,rgba(62,240,208,.16),transparent 42%);
    mask-image:linear-gradient(#000,transparent 55%);
    opacity:.55;
  }
  .glass-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;position:relative;z-index:2;}
  .glass-title{font-size:13px;color:var(--text-mute);letter-spacing:.08em;}
  .status-dot{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--brand);font-family:var(--font-mono);}
  .status-dot i{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block;animation:breathe 3s ease-in-out infinite;}
  @keyframes breathe{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.4;transform:scale(.78);}}
  .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;position:relative;z-index:2;}
  .mini-item{background:rgba(5,8,15,.5);border:1px solid var(--line);border-radius:var(--radius-md);padding:13px 14px;}
  .mini-item .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
  .mini-item .lbl{font-size:12px;color:var(--text-dim);margin-top:3px;}
  .progress-rail{position:relative;z-index:2;margin-top:18px;height:5px;border-radius:999px;background:rgba(122,168,224,.14);overflow:hidden;}
  .progress-rail i{display:block;height:100%;width:78%;border-radius:999px;background:linear-gradient(90deg,var(--brand-deep),var(--brand));box-shadow:0 0 14px rgba(62,240,208,.55);}
  .progress-note{position:relative;z-index:2;display:flex;justify-content:space-between;font-size:12px;color:var(--text-dim);margin-top:9px;font-family:var(--font-mono);}

  /* ============ Sections ============ */
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .sec-head{max-width:44em;margin-bottom:40px;}
  .sec-kicker{
    display:inline-flex;align-items:center;gap:10px;
    font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--brand);
    margin-bottom:14px;
  }
  .sec-kicker::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px;}
  .sec-title{font-size:30px;line-height:1.32;font-weight:700;letter-spacing:-.01em;}
  .sec-desc{margin-top:14px;font-size:15.5px;color:var(--text-mute);line-height:1.85;max-width:38em;}

  /* 统计条 */
  .stat-strip{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);
    overflow:hidden;
  }
  .stat-cell{background:var(--ink-850);padding:22px 24px;position:relative;}
  .stat-cell::before{content:"";position:absolute;left:0;top:0;right:0;height:1px;background:linear-gradient(90deg,rgba(62,240,208,.55),transparent 65%);}
  .stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:28px;font-weight:700;color:var(--text);line-height:1.2;}
  .stat-num small{font-size:13px;color:var(--brand);margin-left:3px;font-weight:600;}
  .stat-lbl{font-size:13px;color:var(--text-dim);margin-top:5px;}

  /* Bento */
  .bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .bento-item{
    background:var(--ink-800);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:26px;
    display:flex;flex-direction:column;
    transition:transform .18s ease-out,border-color .18s ease-out,background .18s ease-out;
    position:relative;overflow:hidden;
  }
  .bento-item:hover{transform:translateY(-2px);border-color:var(--line-strong);background:#0E1728;}
  .bento-item.is-large{grid-column:span 2;grid-row:span 2;padding:32px;}
  .bento-item.is-large::after{
    content:"";position:absolute;right:-60px;bottom:-60px;width:220px;height:220px;border-radius:50%;
    background:radial-gradient(circle,rgba(62,240,208,.16),transparent 68%);
    pointer-events:none;
  }
  .mod-code{
    font-family:var(--font-mono);font-size:12px;color:var(--text-dim);letter-spacing:.1em;margin-bottom:14px;
  }
  .mod-icon{
    width:44px;height:44px;border-radius:var(--radius-md);
    background:rgba(62,240,208,.12);
    display:flex;align-items:center;justify-content:center;
    color:var(--brand);margin-bottom:16px;
  }
  .mod-icon svg{width:22px;height:22px;}
  .bento-item h3{font-size:19px;font-weight:600;line-height:1.45;letter-spacing:-.005em;}
  .bento-item.is-large h3{font-size:24px;}
  .bento-item p{margin-top:10px;font-size:14.5px;color:var(--text-mute);line-height:1.8;}
  .bento-item.is-large p{font-size:15.5px;max-width:32em;}
  .mod-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);font-weight:600;}
  .mod-foot .arrow{transition:transform .18s ease-out;}
  .bento-item:hover .mod-foot .arrow{transform:translateX(4px);}
  .large-points{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px;position:relative;z-index:2;}
  .large-points li{
    display:flex;gap:9px;align-items:flex-start;
    font-size:14px;color:var(--text-mute);line-height:1.7;
    background:rgba(5,8,15,.48);border:1px solid var(--line);border-radius:var(--radius-md);padding:12px 14px;
  }
  .large-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0;}

  /* 流程 */
  .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .flow-step{
    position:relative;padding:24px;border-radius:var(--radius-lg);
    background:var(--ink-850);border:1px solid var(--line);
    transition:border-color .18s ease-out,transform .18s ease-out;
  }
  .flow-step:hover{border-color:var(--line-strong);transform:translateY(-2px);}
  .flow-step .idx{
    font-family:var(--font-mono);font-size:12px;color:var(--brand);
    letter-spacing:.1em;margin-bottom:12px;display:block;
  }
  .flow-step h4{font-size:16.5px;font-weight:600;line-height:1.5;}
  .flow-step p{margin-top:9px;font-size:13.8px;color:var(--text-dim);line-height:1.8;}
  .flow-step::after{
    content:"";position:absolute;right:-13px;top:38px;width:6px;height:6px;
    border-top:1.5px solid rgba(62,240,208,.55);border-right:1.5px solid rgba(62,240,208,.55);
    transform:rotate(45deg);
  }
  .flow-step:last-child::after{display:none;}

  /* 组合对比 */
  .compare-wrap{
    display:grid;grid-template-columns:1fr 1px 1fr;gap:0;
    border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--ink-850);
  }
  .compare-col{padding:30px;}
  .compare-divider{background:linear-gradient(180deg,transparent,var(--line-strong),transparent);}
  .compare-col h4{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;margin-bottom:6px;}
  .compare-col h4 .badge{font-weight:600;}
  .compare-col > p{font-size:13.5px;color:var(--text-dim);margin-bottom:18px;}
  .compare-list li{
    display:flex;gap:11px;align-items:flex-start;
    padding:12px 0;font-size:14.5px;color:var(--text-mute);line-height:1.75;
    border-bottom:1px solid var(--line);
  }
  .compare-list li:last-child{border-bottom:none;}
  .compare-list .mark{width:18px;height:18px;flex-shrink:0;margin-top:5px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;}
  .mark-yes{background:rgba(62,240,208,.14);color:var(--brand);}
  .mark-no{background:rgba(122,168,224,.12);color:var(--text-dim);}
  .compare-media{margin-top:20px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);}
  .compare-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .22s ease-out;}
  .compare-media:hover img{transform:scale(1.03);}

  /* 交叉导航 */
  .cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .cross-card{
    display:block;border-radius:var(--radius-lg);overflow:hidden;
    background:var(--ink-800);border:1px solid var(--line);
    transition:transform .18s ease-out,border-color .18s ease-out,background .18s ease-out;
  }
  .cross-card:hover{transform:translateY(-2px);border-color:var(--line-strong);background:#0E1728;}
  .cross-thumb{overflow:hidden;}
  .cross-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .22s ease-out;}
  .cross-card:hover .cross-thumb img{transform:scale(1.03);}
  .cross-body{padding:22px 24px 24px;}
  .cross-body h3{font-size:17.5px;font-weight:600;line-height:1.5;}
  .cross-body p{margin-top:9px;font-size:13.8px;color:var(--text-dim);line-height:1.78;}
  .cross-link{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:13.5px;font-weight:600;color:var(--brand);}

  /* FAQ */
  .faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  .faq-item{
    background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:0 24px;position:relative;overflow:hidden;
    transition:border-color .18s ease-out,background .18s ease-out;
  }
  .faq-item[open]{border-color:rgba(62,240,208,.34);background:#0E1728;}
  .faq-item::before{
    content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;
    background:var(--brand);opacity:0;transition:opacity .18s ease-out;
  }
  .faq-item[open]::before{opacity:1;}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:20px 0;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16.5px;font-weight:600;line-height:1.55;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:6px;}
  .faq-ic{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .22s ease-out;}
  .faq-ic::before,.faq-ic::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
  .faq-ic::before{left:0;top:7px;width:16px;height:2px;}
  .faq-ic::after{left:7px;top:0;width:2px;height:16px;transition:opacity .2s ease-out;}
  .faq-item[open] .faq-ic::after{opacity:0;}
  .faq-item[open] .faq-ic{transform:rotate(180deg);}
  .faq-answer{padding:0 0 22px;font-size:14.8px;color:var(--text-mute);line-height:1.85;max-width:36em;}

  /* CTA */
  .cta-panel{
    position:relative;overflow:hidden;
    border-radius:20px;border:1px solid rgba(62,240,208,.24);
    padding:52px;
    background:
      linear-gradient(rgba(5,8,15,.9),rgba(5,8,15,.95)),
      url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    box-shadow:var(--shadow-card);
  }
  .cta-panel::after{
    content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle,rgba(62,240,208,.2),transparent 68%);pointer-events:none;
  }
  .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
  .cta-inner h2{font-size:28px;font-weight:700;line-height:1.35;letter-spacing:-.01em;}
  .cta-inner p{margin-top:12px;font-size:15px;color:var(--text-mute);max-width:34em;line-height:1.85;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
  .cta-actions .btn{height:52px;padding:0 26px;border-radius:999px;}

  /* Footer */
  .site-footer{background:var(--ink-850);border-top:1px solid var(--line);position:relative;margin-top:0;}
  .site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(62,240,208,.45),transparent);}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:44px;padding:64px 0 48px;}
  .footer-brand .logo{margin-bottom:18px;}
  .footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:26em;}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
  .footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.04em;}
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a{font-size:13.8px;color:var(--text-dim);transition:color .18s ease-out;}
  .footer-col a:hover{color:var(--brand);}
  .footer-contact li{font-size:13.5px;color:var(--text-dim);display:flex;gap:6px;flex-wrap:wrap;line-height:1.7;}
  .footer-contact b{color:var(--text-mute);font-weight:500;}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:22px 0 30px;border-top:1px solid var(--line);
    font-size:12.5px;color:var(--text-dim);
  }

  /* Responsive */
  @media (max-width:1024px){
    .nav-links{display:none;}
    .nav-toggle{display:flex;}
    .header-actions .btn-nav{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .page-hero h1{font-size:34px;}
    .bento{grid-template-columns:repeat(2,1fr);}
    .bento-item.is-large{grid-column:span 2;grid-row:auto;}
    .flow{grid-template-columns:repeat(2,1fr);}
    .flow-step::after{display:none;}
    .cross-grid{grid-template-columns:repeat(2,1fr);}
    .compare-wrap{grid-template-columns:1fr;}
    .compare-divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;padding:52px 0 40px;}
    .section{padding:66px 0;}
    .cta-panel{padding:36px;}
  }
  @media (max-width:768px){
    .page-hero{min-height:0;padding:44px 0 44px;}
    .page-hero h1{font-size:29px;}
    .hero-sub{font-size:15px;}
    .stat-strip{grid-template-columns:repeat(2,1fr);}
    .bento{grid-template-columns:1fr;}
    .bento-item.is-large{grid-column:span 1;padding:26px;}
    .bento-item.is-large h3{font-size:20px;}
    .large-points{grid-template-columns:1fr;}
    .flow{grid-template-columns:1fr;}
    .cross-grid{grid-template-columns:1fr;}
    .faq-list{grid-template-columns:1fr;}
    .sec-title{font-size:23px;}
    .cta-inner h2{font-size:22px;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:32px;}
    .footer-bottom{flex-direction:column;gap:8px;}
    .section{padding:52px 0;}
    .container{padding:0 20px;}
  }
  @media (max-width:520px){
    .header-inner{height:66px;}
    .logo-text{font-size:15.5px;}
    .page-hero h1{font-size:26px;}
    .stat-cell{padding:18px;}
    .stat-num{font-size:23px;}
    .compare-col{padding:24px;}
    .cta-panel{padding:28px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  }

/* roulang page: category3 */
:root{
    --ink-900:#05080F;
    --ink-850:#080D18;
    --ink-800:#0C1424;
    --ink-750:#101A2C;
    --line:rgba(122,168,224,0.16);
    --line-soft:rgba(122,168,224,0.09);
    --line-strong:rgba(62,240,208,0.42);
    --brand:#3EF0D0;
    --brand-deep:#17A896;
    --accent:#FFC857;
    --text:#E8F1FB;
    --text-mute:#9AAEC6;
    --text-dim:#6C809B;
    --radius:16px;
    --radius-sm:12px;
    --shadow:0 24px 48px -28px rgba(0,0,0,.8);
    --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
    --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text);
    font-family:var(--sans);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit}
  button{font-family:inherit}
  ::selection{background:rgba(62,240,208,.28);color:#03110F}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(5,8,15,.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background .22s ease-out,border-color .22s ease-out;
  }
  .site-header.scrolled{background:rgba(5,8,15,.92);border-bottom-color:var(--line-strong)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px}
  .logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0}
  .logo-mark{
    width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
    background:rgba(62,240,208,.09);
    border:1px solid var(--line-strong);
    box-shadow:0 0 0 1px rgba(62,240,208,.14),0 10px 26px -16px rgba(62,240,208,.7);
  }
  .logo-mark svg{width:21px;height:21px}
  .logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;line-height:1.15;letter-spacing:-.01em}
  .logo-text em{font-style:normal;font-size:10.5px;font-weight:500;letter-spacing:.2em;color:var(--text-dim);margin-top:3px}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-link{
    position:relative;display:inline-block;padding:9px 12px;border-radius:8px;
    font-size:14.5px;color:var(--text-mute);text-decoration:none;
    transition:color .2s ease-out,background .2s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease-out;
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--brand)}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:12px}
  .nav-cta{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:999px;
    background:var(--brand);color:#03231F;font-size:14.5px;font-weight:700;text-decoration:none;
    box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.5);
    transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out;
    white-space:nowrap;
  }
  .nav-cta:hover{background:#5CF6DC;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(62,240,208,.7),0 16px 36px -12px rgba(62,240,208,.6)}
  .nav-cta:active{transform:translateY(1px)}
  .nav-cta-mobile{display:none}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:10px;
    background:rgba(122,168,224,.06);border:1px solid var(--line);
    cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-mute);transition:background .2s}
  .nav-toggle:hover span{background:var(--brand)}

  /* ============ 通用按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:10px;border:1px solid transparent;
    font-size:14.5px;font-weight:600;text-decoration:none;cursor:pointer;
    transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  .btn-primary{background:var(--brand);color:#03231F;box-shadow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.45)}
  .btn-primary:hover{background:#5CF6DC;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--brand)}
  .btn-secondary:hover{background:rgba(62,240,208,.09);transform:translateY(-1px)}
  .btn-ghost{background:transparent;color:var(--text-mute);padding:0 4px}
  .btn-ghost:hover{color:var(--brand)}
  .btn-lg{height:52px;padding:0 28px;font-size:15.5px}
  a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}

  /* ============ 徽章 ============ */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:3px 9px;border-radius:6px;font-size:12px;line-height:1.7;
    background:rgba(62,240,208,.1);color:var(--brand);
    border:1px solid rgba(62,240,208,.18);
  }
  .badge-accent{background:rgba(255,200,87,.12);color:var(--accent);border-color:rgba(255,200,87,.24)}
  .badge-mute{background:rgba(122,168,224,.09);color:var(--text-mute);border-color:var(--line)}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

  /* ============ 面包屑 ============ */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}
  .breadcrumb a{color:var(--text-dim);text-decoration:none;transition:color .2s}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:rgba(122,168,224,.4)}
  .breadcrumb .current{color:var(--brand)}

  /* ============ Hero ============ */
  .page-hero{
    position:relative;overflow:hidden;
    border-bottom:1px solid var(--line);
    background-image:
      linear-gradient(180deg,rgba(5,8,15,.84) 0%,rgba(5,8,15,.93) 62%,rgba(5,8,15,.97) 100%),
      url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(122,168,224,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(122,168,224,.055) 1px,transparent 1px);
    background-size:56px 56px;
    mask-image:radial-gradient(ellipse at 30% 0%,#000 20%,transparent 78%);
    -webkit-mask-image:radial-gradient(ellipse at 30% 0%,#000 20%,transparent 78%);
  }
  .hero-inner{
    position:relative;z-index:2;
    display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.85fr);
    gap:48px;align-items:center;
    padding:56px 0 64px;
  }
  .hero-title{
    font-size:clamp(28px,3.6vw,44px);
    font-weight:700;line-height:1.26;letter-spacing:-.015em;
    margin:18px 0 0;
  }
  .hero-title span{color:var(--brand)}
  .hero-sub{
    margin:16px 0 0;max-width:560px;
    font-size:16px;line-height:1.85;color:var(--text-mute);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
  .hero-meta div{display:flex;flex-direction:column;gap:2px}
  .hero-meta b{font-family:var(--mono);font-size:19px;font-variant-numeric:tabular-nums;color:var(--text);font-weight:600}
  .hero-meta small{font-size:12.5px;color:var(--text-dim)}

  .hero-panel{
    background:rgba(255,255,255,.045);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:24px;
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    box-shadow:var(--shadow);
    background-image:linear-gradient(180deg,rgba(62,240,208,.07),rgba(62,240,208,0) 46%);
  }
  .hero-panel-top{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .status-dot{
    width:8px;height:8px;border-radius:50%;background:var(--brand);
    box-shadow:0 0 0 4px rgba(62,240,208,.14);
    animation:breathe 3s ease-in-out infinite;
  }
  @keyframes breathe{
    0%,100%{box-shadow:0 0 0 4px rgba(62,240,208,.12);opacity:.85}
    50%{box-shadow:0 0 0 9px rgba(62,240,208,.03);opacity:1}
  }
  .hero-panel-title{font-size:14px;color:var(--text);font-weight:600}
  .hero-panel-top .badge{margin-left:auto}
  .hero-panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:20px 0 4px}
  .kv-num{font-family:var(--mono);font-size:26px;font-variant-numeric:tabular-nums;color:var(--brand);line-height:1.1}
  .kv-unit{font-size:12px;color:var(--text-dim);margin-left:3px}
  .kv-label{margin:6px 0 0;font-size:12.5px;color:var(--text-mute)}
  .hero-bar{height:6px;border-radius:999px;background:rgba(122,168,224,.14);overflow:hidden;margin-top:20px}
  .hero-bar span{display:block;height:100%;width:68%;border-radius:999px;background:linear-gradient(90deg,var(--brand-deep),var(--brand));box-shadow:0 0 16px -2px rgba(62,240,208,.8)}
  .hero-panel-note{margin:14px 0 0;font-size:12.5px;color:var(--text-dim);line-height:1.7}

  /* ============ 板块 ============ */
  .section{padding:76px 0}
  .section-alt{background:var(--ink-850);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:34px;flex-wrap:wrap}
  .kicker{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--brand);margin:0 0 10px}
  .h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.32;letter-spacing:-.01em;margin:0}
  .h2::before{content:"";display:inline-block;width:3px;height:19px;border-radius:2px;background:var(--brand);margin-right:12px;vertical-align:-2px}
  .section-desc{margin:12px 0 0;max-width:640px;font-size:15px;line-height:1.85;color:var(--text-mute)}
  .link-more{font-size:14px;color:var(--brand);text-decoration:none;white-space:nowrap;transition:opacity .2s}
  .link-more:hover{opacity:.75}

  /* ============ 指标卡行 ============ */
  .stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
  .stat-card{
    position:relative;overflow:hidden;
    background:var(--ink-800);border:1px solid var(--line);border-radius:14px;
    padding:22px 22px 18px;
    transition:border-color .18s ease-out,transform .18s ease-out,background .18s ease-out;
  }
  .stat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,rgba(62,240,208,.85),rgba(62,240,208,0))}
  .stat-card:hover{border-color:var(--line-strong);transform:translateY(-2px);background:var(--ink-750)}
  .stat-num{font-family:var(--mono);font-size:30px;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--text);font-weight:600}
  .stat-num i{font-style:normal;font-size:13px;color:var(--text-mute);margin-left:5px;font-family:var(--sans);font-weight:500}
  .stat-label{margin:10px 0 0;font-size:13px;color:var(--text-dim);line-height:1.65}
  .stat-trend{display:inline-flex;align-items:center;gap:5px;margin-top:8px;font-family:var(--mono);font-size:12px;color:var(--brand)}
  .stat-trend.dim{color:var(--text-dim)}

  /* ============ 进度条组 ============ */
  .meter-panel{
    background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);
    padding:12px 28px 24px;
  }
  .meter{display:grid;grid-template-columns:180px 1fr 64px;gap:20px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line-soft)}
  .meter:last-child{border-bottom:0}
  .meter-label{font-size:14.5px;color:var(--text)}
  .meter-label small{display:block;font-size:12px;color:var(--text-dim);margin-top:2px}
  .meter-track{height:8px;border-radius:999px;background:rgba(122,168,224,.13);overflow:hidden}
  .meter-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-deep),var(--brand));box-shadow:0 0 18px -6px rgba(62,240,208,.9)}
  .meter-num{font-family:var(--mono);font-size:14px;font-variant-numeric:tabular-nums;color:var(--brand);text-align:right}
  .meter-foot{margin:18px 0 0;font-size:12.5px;color:var(--text-dim);line-height:1.8}

  /* ============ 图文卡 ============ */
  .media-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:36px;align-items:center}
  .media-figure{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--ink-800)}
  .media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease-out}
  .media-figure:hover img{transform:scale(1.03)}
  .media-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,0) 45%,rgba(5,8,15,.72));pointer-events:none}
  .media-caption{position:absolute;left:18px;right:18px;bottom:16px;z-index:2;font-size:13px;color:var(--text-mute)}
  .read-list{list-style:none;margin:0;padding:0}
  .read-list li{padding:16px 0 16px 22px;border-bottom:1px solid var(--line-soft);position:relative;font-size:14.5px;color:var(--text-mute);line-height:1.8}
  .read-list li:last-child{border-bottom:0}
  .read-list li::before{content:"";position:absolute;left:0;top:24px;width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(62,240,208,.1)}
  .read-list b{color:var(--text);font-weight:600;display:block;margin-bottom:2px;font-size:15px}

  /* ============ 对比卡 ============ */
  .compare-wrap{
    display:grid;grid-template-columns:1fr 1fr;
    border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
    background:var(--ink-850);
  }
  .compare-col{padding:30px 28px}
  .compare-col.hl{
    background:rgba(62,240,208,.045);
    border-left:1px solid var(--line-strong);
    box-shadow:inset 10px 0 26px -22px var(--brand);
  }
  .compare-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
  .compare-head h3{margin:0;font-size:17px;font-weight:600;color:var(--text)}
  .check-list{list-style:none;margin:16px 0 0;padding:0}
  .check-list li{display:flex;gap:10px;padding:10px 0;font-size:14.5px;color:var(--text-mute);line-height:1.7;border-bottom:1px dashed rgba(122,168,224,.12)}
  .check-list li:last-child{border-bottom:0}
  .check-list .mark{
    flex:0 0 18px;height:18px;margin-top:2px;border-radius:50%;
    display:grid;place-items:center;font-size:10px;line-height:1;
  }
  .mark-ok{background:rgba(62,240,208,.14);color:var(--brand)}
  .mark-off{background:rgba(122,168,224,.12);color:var(--text-dim)}

  /* ============ 设置清单 ============ */
  .setting-list{list-style:none;margin:0;padding:0}
  .setting-item{display:grid;grid-template-columns:60px 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--line-soft)}
  .setting-item:first-child{border-top:1px solid var(--line-soft)}
  .setting-no{font-family:var(--mono);font-size:13px;color:var(--brand);padding-top:2px;letter-spacing:.06em}
  .setting-title{margin:0;font-size:16.5px;font-weight:600;color:var(--text)}
  .setting-text{margin:8px 0 0;font-size:14.5px;color:var(--text-mute);line-height:1.85;max-width:680px}
  .notice{
    margin-top:26px;padding:18px 22px;border-radius:var(--radius-sm);
    border:1px solid rgba(255,200,87,.34);
    background:rgba(255,200,87,.07);
    color:var(--accent);font-size:14px;line-height:1.8;
  }
  .notice b{color:var(--accent)}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:900px}
  .faq-item{
    position:relative;overflow:hidden;
    background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-sm);
    margin-bottom:12px;
    transition:border-color .18s ease-out,background .18s ease-out;
  }
  .faq-item:hover{border-color:rgba(122,168,224,.3)}
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
    transform:scaleY(0);transform-origin:top;transition:transform .22s ease-out;
  }
  .faq-item[open]::before{transform:scaleY(1)}
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    padding:18px 54px 18px 22px;font-size:16.5px;font-weight:600;color:var(--text);line-height:1.6;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
    font-size:20px;font-weight:400;color:var(--brand);transition:transform .2s ease-out;
  }
  .faq-item[open] summary::after{content:"−"}
  .faq-body{margin:0;padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-mute);max-width:760px}

  /* ============ CTA ============ */
  .cta-panel{
    position:relative;overflow:hidden;
    display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
    padding:48px;
    border-radius:20px;
    border:1px solid var(--line);
    background:
      linear-gradient(135deg,rgba(62,240,208,.09),rgba(5,8,15,0) 55%),
      radial-gradient(120% 160% at 100% 0%,rgba(62,240,208,.14),rgba(5,8,15,0) 60%),
      var(--ink-850);
    box-shadow:var(--shadow);
  }
  .cta-panel h2{margin:0;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.34;letter-spacing:-.01em}
  .cta-panel p{margin:14px 0 0;font-size:15px;line-height:1.85;color:var(--text-mute);max-width:520px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .cta-side{
    border:1px solid var(--line);border-radius:14px;padding:22px;
    background:rgba(255,255,255,.04);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
  }
  .cta-side h3{margin:0 0 6px;font-size:15px;font-weight:600;color:var(--text)}
  .cta-side ul{list-style:none;margin:12px 0 0;padding:0}
  .cta-side li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid var(--line-soft);font-size:13.5px;color:var(--text-mute)}
  .cta-side li:last-child{border-bottom:0}
  .cta-side li b{font-family:var(--mono);color:var(--brand);font-variant-numeric:tabular-nums;font-weight:600}

  /* ============ 页脚 ============ */
  .site-footer{position:relative;background:var(--ink-850);border-top:1px solid var(--line);padding:60px 0 28px;margin-top:0}
  .site-footer::before{
    content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(62,240,208,.6),transparent);
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:40px}
  .footer-brand p{margin:16px 0 0;font-size:13.5px;line-height:1.85;color:var(--text-mute);max-width:330px}
  .footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--text);letter-spacing:.02em}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
  .footer-col a{font-size:13.5px;color:var(--text-mute);text-decoration:none;transition:color .2s ease-out}
  .footer-col a:hover{color:var(--brand)}
  .footer-contact li{font-size:13.5px;color:var(--text-mute);display:flex;gap:6px;flex-wrap:wrap}
  .footer-contact b{color:var(--text);font-weight:500}
  .footer-bottom{
    margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:12.5px;color:var(--text-dim);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1080px){
    .nav-link{padding:8px 9px;font-size:14px}
    .hero-inner{gap:32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:1023px){
    .nav-toggle{display:inline-flex}
    .header-actions .nav-cta{display:none}
    .nav-links{
      position:fixed;left:16px;right:16px;top:86px;
      flex-direction:column;align-items:stretch;gap:4px;
      background:rgba(8,13,24,.99);
      border:1px solid var(--line);border-radius:16px;
      padding:14px;box-shadow:var(--shadow);
      display:none;max-height:calc(100vh - 120px);overflow:auto;
    }
    .nav-links.is-open{display:flex}
    .nav-link{padding:13px 14px;font-size:15px}
    .nav-link::after{display:none}
    .nav-link.is-active{background:rgba(62,240,208,.09);color:var(--brand)}
    .nav-cta-mobile{display:inline-flex;margin-top:10px;width:100%;height:48px}
    .hero-inner{grid-template-columns:1fr;padding:44px 0 52px}
    .hero-panel{max-width:520px}
    .media-grid{grid-template-columns:1fr;gap:26px}
    .cta-panel{grid-template-columns:1fr;padding:34px;gap:28px}
    .section{padding:60px 0}
  }
  @media (max-width:820px){
    .stat-strip{grid-template-columns:1fr 1fr}
    .meter{grid-template-columns:1fr 64px;gap:10px 16px;align-items:center}
    .meter-label{grid-column:1/-1}
    .meter-num{grid-column:2;grid-row:2}
    .meter-track{grid-column:1;grid-row:2}
    .compare-wrap{grid-template-columns:1fr}
    .compare-col.hl{border-left:0;border-top:1px solid var(--line-strong);box-shadow:inset 0 10px 26px -22px var(--brand)}
  }
  @media (max-width:640px){
    .container{padding:0 18px}
    .nav-inner{height:66px}
    .logo-text{font-size:15.5px}
    .logo-mark{width:34px;height:34px}
    .nav-links{top:78px}
    .hero-title{font-size:28px}
    .hero-meta{gap:18px}
    .hero-meta b{font-size:17px}
    .section{padding:48px 0}
    .meter-panel{padding:8px 18px 18px}
    .compare-col{padding:24px 20px}
    .cta-panel{padding:24px}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .footer-bottom{flex-direction:column;gap:8px}
    .setting-item{grid-template-columns:36px 1fr;gap:14px}
  }
  @media (max-width:420px){
    .stat-strip{grid-template-columns:1fr}
    .hero-panel{padding:20px}
    .hero-panel-grid{gap:14px}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  }

/* roulang page: category4 */
:root{
  --ink-900:#05080F;
  --ink-850:#080D18;
  --ink-800:#0C1424;
  --ink-780:#101A2C;
  --line:rgba(122,168,224,.16);
  --line-strong:rgba(62,240,208,.42);
  --brand:#3EF0D0;
  --brand-deep:#17A896;
  --accent:#FFC857;
  --text:#E8F1FB;
  --text-mute:#9AAEC6;
  --text-dim:#6C809B;
  --radius-lg:16px;
  --radius-sm:12px;
  --shadow:0 24px 48px -28px rgba(0,0,0,.8);
  --glow:0 0 0 1px rgba(62,240,208,.5),0 12px 32px -12px rgba(62,240,208,.45);
  --ease:cubic-bezier(.32,.72,.28,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04120F;padding:10px 16px;z-index:200;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(5,8,15,.55);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.88);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:74px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(62,240,208,.16),rgba(62,240,208,.02));
  border:1px solid var(--line-strong);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.2}
.logo-text em{font-style:normal;color:var(--brand);font-size:13px;font-weight:600;margin-left:4px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:14.5px;color:var(--text-mute);
  border-radius:8px;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:10px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#04120F;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(62,240,208,.4)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--brand)}
.btn-outline:hover{background:rgba(62,240,208,.08);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text-mute);padding:0 4px;height:auto;border:0}
.btn-ghost:hover{color:var(--brand)}
.btn-cta{height:52px;padding:0 26px;font-size:15.5px}
.btn-nav{border-radius:999px;height:40px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--text);transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(8,13,24,.98);padding:14px 24px 22px;
}
.nav-drawer.is-open{display:block}
.nav-drawer .nav-link{display:block;padding:12px 0;font-size:15.5px;border-bottom:1px solid rgba(122,168,224,.08)}
.nav-drawer .nav-link::after{display:none}
.nav-drawer .btn{width:100%;margin-top:16px}

/* ---------- generic blocks ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:inline-block}
h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--text-mute);font-size:15.5px;max-width:640px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:6px;background:rgba(62,240,208,.1);color:var(--brand);
  border:1px solid rgba(62,240,208,.18);
}
.badge-mute{background:rgba(122,168,224,.08);color:var(--text-mute);border-color:var(--line)}
.badge-accent{background:rgba(255,200,87,.12);color:var(--accent);border-color:rgba(255,200,87,.24)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  padding:64px 0 60px;
  background:
    linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.96)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(122,168,224,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(122,168,224,.07) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(circle at 70% 20%,#000 10%,transparent 72%);
}
.cat-hero .container{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:20px}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(122,168,224,.4)}
.crumb .cur{color:var(--brand)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:44px;align-items:center}
.hero-title{font-size:44px;line-height:1.24;font-weight:700;letter-spacing:-.012em;max-width:16em}
.hero-title span{color:var(--brand)}
.hero-lead{margin-top:18px;color:var(--text-mute);font-size:16px;max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:32px;padding-top:22px;border-top:1px solid var(--line)}
.hero-fact b{display:block;font-size:22px;color:var(--text);font-weight:700}
.hero-fact small{font-size:12.5px;color:var(--text-dim);letter-spacing:.02em}
.data-card{
  position:relative;border-radius:var(--radius-lg);padding:24px;overflow:hidden;
  background:rgba(255,255,255,.045);backdrop-filter:blur(10px);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.data-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(160deg,rgba(62,240,208,.42),rgba(122,168,224,.06));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.data-card h3{font-size:14px;font-weight:600;color:var(--text-mute);display:flex;align-items:center;justify-content:space-between}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(62,240,208,.14);animation:breathe 3s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.55;transform:scale(.9)}50%{opacity:1;transform:scale(1.1)}}
.data-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
.data-item{padding:14px;border-radius:var(--radius-sm);background:rgba(12,20,36,.72);border:1px solid var(--line)}
.data-item b{display:block;font-size:24px;color:var(--brand);font-weight:700}
.data-item small{font-size:12px;color:var(--text-dim);display:block;margin-top:2px}
.data-bar{margin-top:20px}
.data-bar .bar-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-dim);margin-bottom:8px}
.data-bar .track{height:6px;border-radius:99px;background:rgba(122,168,224,.14);overflow:hidden}
.data-bar .fill{height:100%;width:86%;border-radius:99px;background:linear-gradient(90deg,var(--brand-deep),var(--brand))}

/* ---------- strip ---------- */
.strip{border-bottom:1px solid var(--line);background:var(--ink-850)}
.strip-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line)}
.strip-cell{background:var(--ink-850);padding:22px 22px}
.strip-cell b{display:block;font-size:26px;font-weight:700;color:var(--brand)}
.strip-cell span{font-size:13px;color:var(--text-mute)}

/* ---------- faq layout ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:36px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  position:relative;overflow:hidden;border-radius:var(--radius-sm);
  background:var(--ink-800);border:1px solid var(--line);
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item:hover{border-color:rgba(122,168,224,.32)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  opacity:0;transition:opacity .2s var(--ease);
}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:17px;font-weight:600;line-height:1.55;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);font-size:15px;line-height:1;
  transition:transform .2s var(--ease),background .2s var(--ease);margin-top:2px;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(62,240,208,.12)}
.faq-body{padding:0 22px 20px 22px;color:var(--text-mute);font-size:15px;line-height:1.85}
.faq-body strong{color:var(--text);font-weight:600}
.faq-note{
  margin-top:14px;display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-dim);
  padding:14px 16px;border-radius:var(--radius-sm);border:1px dashed rgba(255,200,87,.3);
  background:rgba(255,200,87,.05);
}
.faq-note b{color:var(--accent);font-weight:600}

/* ---------- support card ---------- */
.support-card{
  position:sticky;top:96px;border-radius:var(--radius-lg);padding:26px;
  background:rgba(255,255,255,.045);backdrop-filter:blur(10px);
  border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden;
}
.support-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(160deg,rgba(62,240,208,.42),rgba(122,168,224,.06));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.support-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.support-card p{font-size:14px;color:var(--text-mute);line-height:1.8}
.support-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.support-list li{display:flex;gap:10px;font-size:13.5px;color:var(--text-mute);align-items:flex-start}
.support-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;
}
.support-card .btn{width:100%;margin-top:20px}
.support-meta{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-dim);display:flex;flex-direction:column;gap:6px;
}
.support-meta b{color:var(--text);font-weight:600;font-family:ui-monospace,Menlo,Consolas,monospace}

/* ---------- channel cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  position:relative;border-radius:var(--radius-lg);padding:26px;
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--ink-780);box-shadow:var(--shadow)}
.card .num{font-size:12px;letter-spacing:.14em;color:var(--text-dim);font-weight:600}
.card h3{font-size:19px;font-weight:700;margin-top:12px;line-height:1.45}
.card p{font-size:14.5px;color:var(--text-mute);margin-top:10px}
.card .card-foot{
  margin-top:20px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-dim);
}
.card .card-foot a{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card .card-foot a:hover{text-decoration:underline}
.icon-box{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(62,240,208,.12);border:1px solid rgba(62,240,208,.2);color:var(--brand);
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
  position:relative;padding:24px 22px;border-radius:var(--radius-sm);
  background:var(--ink-850);border:1px solid var(--line);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;letter-spacing:.1em;
  color:var(--brand);font-weight:600;
}
.step h3{font-size:16.5px;font-weight:700;margin-top:10px}
.step p{font-size:13.5px;color:var(--text-mute);margin-top:8px;line-height:1.75}

/* ---------- cross nav ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.cross-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cross-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.cross-card .thumb{overflow:hidden;aspect-ratio:16/9;background:var(--ink-900)}
.cross-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);opacity:.88}
.cross-card:hover .thumb img{transform:scale(1.03);opacity:1}
.cross-card .body{padding:20px 22px 22px}
.cross-card h3{font-size:17.5px;font-weight:700}
.cross-card p{font-size:13.5px;color:var(--text-mute);margin-top:8px}
.cross-card .go{margin-top:14px;font-size:13px;color:var(--brand);font-weight:600;display:inline-flex;gap:6px;align-items:center}

/* ---------- cta form ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--ink-850)}
.cta-band .inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:40px;padding:44px}
.cta-band h2{font-size:28px}
.cta-band .lead{color:var(--text-mute);font-size:15px;margin-top:14px;max-width:34em}
.contact-form{
  border-radius:var(--radius-lg);padding:26px;background:rgba(255,255,255,.045);
  border:1px solid var(--line);backdrop-filter:blur(10px);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-mute);margin-bottom:7px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:10px;font-size:14px;color:var(--text);
  background:rgba(5,8,15,.7);border:1px solid var(--line);font-family:inherit;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-dim)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(62,240,208,.2);
}
.form-hint{font-size:12px;color:var(--text-dim);margin-top:12px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-850);padding:66px 0 26px;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(62,240,208,.45),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{font-size:14px;color:var(--text-mute);margin-top:16px;max-width:30em}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-mute);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{font-size:13.5px;color:var(--text-dim);display:flex;gap:6px;flex-wrap:wrap}
.footer-contact b{color:var(--text-mute);font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--text-dim);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-title{font-size:36px;max-width:none}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .support-card{position:static;top:auto}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band .inner{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:68px 0}
}
@media (max-width:768px){
  .nav-wrap{height:66px;gap:16px}
  .logo-text{font-size:15.5px}
  .logo-text em{font-size:12px}
  .strip-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero-title{font-size:30px}
  h2{font-size:24px}
  .section{padding:56px 0}
  .cat-hero{padding:44px 0 48px}
  .btm-facts{gap:20px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-title{font-size:27px}
  .hero-facts{gap:18px}
  .hero-fact b{font-size:19px}
  .data-grid{grid-template-columns:1fr 1fr;gap:12px}
  .btn-cta{width:100%}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:15.5px;padding:16px 18px}
  .faq-body{padding:0 18px 18px}
  .cta-band .inner{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}