/* roulang page: index */
:root{
  --void:#0C0A18;
  --void-2:#16132B;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --ink:#17151F;
  --ink-2:#5C5870;
  --ink-3:#8B8798;
  --brand:#6C4CF1;
  --brand-ink:#4A2FD0;
  --brand-soft:#EEE9FF;
  --accent:#2BD9C4;
  --warm:#E8A33D;
  --danger:#D64545;
  --dark-ink:#F2F0FF;
  --dark-ink-2:#B9B3D6;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(23,21,31,.04);
  --sh-2:0 12px 32px -12px rgba(23,21,31,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand);color:#fff;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.sec{padding:104px 0;}
.sec-tight{padding:72px 0;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn i{font-size:13px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(108,76,241,.9);}
.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.btn-ghost{background:transparent;color:var(--dark-ink);border-color:rgba(255,255,255,.28);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;height:52px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);position:relative;}
.text-link::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--brand);transition:width 200ms var(--ease);}
.text-link:hover::after{width:100%;}
.text-link i{transition:transform 200ms var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(246,244,240,.96);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(23,21,31,.6);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height 200ms var(--ease);}
.site-header.is-scrolled .nav-wrap{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--void);color:var(--accent);font-size:14px;
  box-shadow:0 6px 16px -10px rgba(12,10,24,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text i{font-style:normal;font-size:12px;font-weight:600;color:var(--brand);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;transition:color 180ms var(--ease);}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width 200ms var(--ease);}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after,.nav-link.active::after{width:100%;}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--surface);cursor:pointer;padding:0;place-items:center;}
.hamburger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;margin:3px auto;transition:transform 200ms var(--ease),opacity 200ms var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.drawer{display:none;border-top:1px solid var(--line);background:var(--surface);}
.drawer.is-open{display:block;}
.drawer ul{padding:12px 0;}
.drawer a{display:block;padding:12px 32px;font-size:15px;font-weight:500;color:var(--ink);border-left:3px solid transparent;}
.drawer a.active{color:var(--brand);border-left-color:var(--brand);background:var(--brand-soft);}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--void);color:var(--dark-ink);overflow:hidden;
  padding:96px 0 104px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(rgba(255,255,255,.18) 1px,transparent 1px),
    radial-gradient(120% 90% at 82% 0%,rgba(108,76,241,.42),transparent 62%),
    radial-gradient(80% 70% at 6% 100%,rgba(43,217,196,.18),transparent 60%);
  background-size:26px 26px,auto,auto;
  opacity:.9;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,196,.6),rgba(108,76,241,.6),transparent);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center;}
.hero-copy{max-width:620px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--accent);
  background:rgba(43,217,196,.12);border:1px solid rgba(43,217,196,.28);
  padding:6px 14px;border-radius:999px;
}
.hero h1{
  margin-top:24px;font-size:52px;line-height:1.15;letter-spacing:-.02em;font-weight:700;color:#fff;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--dark-ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:44px;padding-top:28px;border-top:1px solid rgba(255,255,255,.12);}
.hero-metrics li{min-width:96px;}
.hero-metrics b{display:block;font-size:30px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1.1;}
.hero-metrics span{display:block;margin-top:6px;font-size:13px;color:var(--dark-ink-2);}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;border:1px solid rgba(255,255,255,.14);box-shadow:0 40px 80px -40px rgba(0,0,0,.9);}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:16px;
  background:linear-gradient(180deg,rgba(12,10,24,.05),rgba(12,10,24,.35));
  pointer-events:none;
}

/* ---------- 快捷更新条 ---------- */
.quickbar{background:var(--surface);border-bottom:1px solid var(--line);}
.quickbar-inner{display:flex;align-items:center;gap:20px;padding-top:16px;padding-bottom:16px;}
.quick-label{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);white-space:nowrap;}
.quick-tags{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px;}
.quick-tags::-webkit-scrollbar{display:none;}
.tag{
  display:inline-block;white-space:nowrap;font-size:13px;font-weight:500;color:var(--ink-2);
  background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:6px 14px;
  transition:border-color 180ms var(--ease),color 180ms var(--ease),background-color 180ms var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

/* ---------- 通用板块头 ---------- */
.sec-head{max-width:720px;margin-bottom:56px;}
.sec-kicker{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);}
.sec-head h2{margin-top:12px;font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.01em;}
.sec-desc{margin-top:14px;font-size:16px;color:var(--ink-2);}
.sec-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ---------- 痛点区 ---------- */
.pain{background:var(--paper);}
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 64px;}
.pain-item{border-top:1px solid var(--line);padding:28px 0 30px;}
.pain-item:nth-child(-n+2){border-top:none;padding-top:0;}
.pain-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:3px 12px;font-variant-numeric:tabular-nums;
}
.pain-item h3{margin-top:14px;font-size:22px;font-weight:600;line-height:1.45;}
.pain-item p{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ---------- 方案长卡 ---------- */
.solutions{background:var(--surface);}
.sol-list{display:flex;flex-direction:column;gap:28px;}
.sol-card{
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.sol-card:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px);}
.sol-card.rev{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);}
.sol-card.rev .sol-cover{order:2;}
.sol-card.rev .sol-body{order:1;}
.sol-cover{overflow:hidden;background:var(--void-2);}
.sol-cover img{width:100%;height:100%;min-height:260px;object-fit:cover;border-radius:0;transition:transform 300ms var(--ease);}
.sol-card:hover .sol-cover img{transform:scale(1.03);}
.sol-body{padding:32px;}
.sol-body h3{margin-top:16px;font-size:24px;font-weight:600;line-height:1.4;}
.sol-body p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2);}
.badge-num{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 10px;
}
.sol-body .text-link{margin-top:20px;}

/* ---------- 数据区 ---------- */
.stats-band{background:var(--void);color:var(--dark-ink);padding:72px 0;}
.stats-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.stat{padding:8px 24px;border-left:1px solid rgba(255,255,255,.12);}
.stat:first-child{border-left:none;padding-left:0;}
.stat b{display:block;font-size:44px;line-height:1.1;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;}
.stat b em{font-style:normal;font-size:16px;font-weight:600;color:var(--accent);margin-left:6px;}
.stat span{display:block;margin-top:12px;font-size:14px;color:var(--dark-ink-2);line-height:1.7;}

/* ---------- 流程条 ---------- */
.flow{background:var(--paper);}
.flow-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.flow-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.flow-card:hover{border-color:var(--brand);box-shadow:var(--sh-2);}
.flow-card i{font-size:20px;color:var(--accent);}
.flow-card h3{margin-top:16px;font-size:20px;font-weight:600;}
.flow-card p{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* ---------- 最新信息 ---------- */
.news{background:var(--surface);}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.news-card:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px);}
.news-card.is-feature{grid-column:span 2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
.news-link{display:block;height:100%;}
.news-card.is-feature .news-link{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
.news-thumb{
  display:flex;align-items:center;justify-content:center;aspect-ratio:16/9;
  background-color:var(--brand-soft);
  background-image:radial-gradient(rgba(108,76,241,.22) 1px,transparent 1px);
  background-size:18px 18px;
  color:var(--brand);font-size:26px;border-radius:0;
}
.news-card.is-feature .news-thumb{aspect-ratio:auto;height:100%;min-height:220px;}
.news-body{display:block;padding:22px 24px 26px;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.badge-cat{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 10px;}
.news-meta time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.news-title{
  margin-top:14px;font-size:18px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color 180ms var(--ease);
}
.news-card:hover .news-title{color:var(--brand);}
.news-exc{
  margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  min-height:280px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--paper);
  color:var(--ink-2);font-size:14px;text-align:center;padding:32px;
}
.news-empty i{font-size:40px;color:var(--brand);opacity:.55;}
.news-foot{display:flex;justify-content:center;margin-top:40px;}

/* ---------- FAQ ---------- */
.faq{background:var(--paper);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  cursor:pointer;list-style:none;padding:24px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);
  font-size:16px;font-weight:600;line-height:1;transition:transform 240ms var(--ease);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-item summary:hover{color:var(--brand);}
.faq-a{padding:0 44px 26px 0;font-size:15px;color:var(--ink-2);line-height:1.85;max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);}
.faq-item[open] .faq-a{max-height:400px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--void-2);color:var(--dark-ink);overflow:hidden;
  border-radius:20px;padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(90% 120% at 88% 10%,rgba(108,76,241,.45),transparent 60%),radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:auto,24px 24px;opacity:.85;pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:620px;}
.cta-copy h2{font-size:30px;font-weight:700;line-height:1.35;color:#fff;}
.cta-copy p{margin-top:14px;font-size:15px;color:var(--dark-ink-2);}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 隐私说明条 ---------- */
.privacy-note{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:20px 24px;font-size:13px;line-height:1.8;color:var(--ink-2);
}
.privacy-note strong{color:var(--ink);font-weight:600;}
.privacy-note a{color:var(--brand);font-weight:600;}
.privacy-note a:hover{text-decoration:underline;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--void);color:var(--dark-ink-2);padding:72px 0 28px;margin-top:8px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.foot-brand .brand-mark{background:rgba(255,255,255,.08);}
.foot-brand .brand-text b{color:#fff;}
.foot-brand p{margin-top:20px;font-size:14px;line-height:1.85;max-width:340px;color:var(--dark-ink-2);}
.foot-col h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:18px;}
.foot-col li{margin-bottom:12px;}
.foot-col a{font-size:14px;color:var(--dark-ink-2);transition:color 180ms var(--ease);}
.foot-col a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:#8B8798;
}

/* ---------- 移动底部 Tab ---------- */
.tabbar{display:none;}

/* ---------- 弹层 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:1080;background:rgba(12,10,24,.62);
  display:none;align-items:center;justify-content:center;padding:24px;
}
.modal-mask.is-open{display:flex;}
.modal-box{
  width:100%;max-width:520px;background:var(--surface);border-radius:20px;
  box-shadow:0 40px 80px -30px rgba(12,10,24,.7);padding:32px;max-height:90vh;overflow:auto;
  animation:pop 240ms var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
.modal-head h3{font-size:20px;font-weight:700;}
.modal-head p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.8;}
.modal-close{border:none;background:var(--paper);color:var(--ink-2);width:34px;height:34px;border-radius:10px;cursor:pointer;flex-shrink:0;}
.modal-close:hover{background:var(--brand-soft);color:var(--brand);}
.form-row{margin-top:20px;}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.form-row label em{font-style:normal;color:var(--danger);margin-left:2px;}
.form-control,.form-select{
  width:100%;height:48px;border:1px solid var(--line);border-radius:10px;background:var(--surface);
  padding:0 14px;font-size:15px;color:var(--ink);transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
textarea.form-control{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control:focus,.form-select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.15);}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:13px;color:var(--ink-2);line-height:1.7;}
.check-row input{width:18px;height:18px;margin-top:2px;accent-color:var(--brand);flex-shrink:0;}
.form-hint{margin-top:10px;font-size:12px;color:var(--ink-3);}
.form-success{display:none;margin-top:18px;padding:14px 16px;border-radius:10px;background:var(--brand-soft);color:var(--brand-ink);font-size:14px;}
.form-success.is-open{display:block;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .wrap{max-width:1280px;}
  .hero h1{font-size:44px;}
}
@media (max-width:991px){
  .wrap{padding:0 24px;}
  .sec{padding:76px 0;}
  .nav-links,.nav-right .btn{display:none;}
  .hamburger{display:block;}
  .hero{padding:64px 0 72px;}
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:40px;}
  .hero-media{order:-1;}
  .hero h1{font-size:38px;}
  .hero-metrics{gap:28px;}
  .pain-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .pain-item:nth-child(-n+2){border-top:1px solid var(--line);padding-top:28px;}
  .pain-item:first-child{border-top:none;padding-top:0;}
  .sol-card,.sol-card.rev{grid-template-columns:minmax(0,1fr);}
  .sol-card.rev .sol-cover{order:0;}
  .sol-card.rev .sol-body{order:1;}
  .sol-cover img{min-height:200px;}
  .stats-inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0;}
  .stat:nth-child(3){border-left:none;padding-left:0;}
  .flow-grid{grid-template-columns:minmax(0,1fr);}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-card.is-feature{grid-column:span 2;grid-template-columns:minmax(0,1fr);}
  .news-card.is-feature .news-link{grid-template-columns:minmax(0,1fr);}
  .news-card.is-feature .news-thumb{min-height:0;aspect-ratio:16/9;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1060;
    background:var(--surface);border-top:1px solid var(--line);
    box-shadow:0 -8px 24px -18px rgba(23,21,31,.7);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tab-item{
    flex:1;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11px;color:var(--ink-3);position:relative;transition:color 180ms var(--ease);
  }
  .tab-item i{font-size:18px;}
  .tab-item::before{content:"";position:absolute;top:0;width:0;height:2px;background:var(--brand);transition:width 200ms var(--ease);}
  .tab-item.active{color:var(--brand);}
  .tab-item.active::before{width:22px;}
  body{padding-bottom:72px;}
}
@media (max-width:767px){
  .sec-head.row{flex-direction:column;align-items:flex-start;}
  .news-grid{grid-template-columns:minmax(0,1fr);}
  .news-card.is-feature{grid-column:span 1;}
  .sec-head h2{font-size:28px;}
  .cta-copy h2{font-size:24px;}
}
@media (max-width:575px){
  .wrap{padding:0 18px;}
  .sec{padding:56px 0;}
  .hero{padding:48px 0 56px;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-metrics{gap:20px;}
  .hero-metrics li{min-width:78px;}
  .hero-metrics b{font-size:24px;}
  .sol-body{padding:24px;}
  .stats-inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0;}
  .stat{padding:6px 16px;}
  .stat b{font-size:32px;}
  .cta-band{padding:28px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:minmax(0,1fr);}
  .faq-a{padding-right:0;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-box{max-width:100%;border-radius:20px 20px 0 0;padding:24px 20px 32px;max-height:92vh;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --void:#0C0A18;
  --void-2:#16132B;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --ink:#17151F;
  --ink-2:#5C5870;
  --ink-3:#8B8798;
  --brand:#6C4CF1;
  --brand-ink:#4A2FD0;
  --brand-soft:#EEE9FF;
  --accent:#2BD9C4;
  --warm:#E8A33D;
  --danger:#D64545;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(23,21,31,.04);
  --sh-2:0 12px 32px -12px rgba(23,21,31,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;line-height:1.85;color:var(--ink);background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul{list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.2}
p{margin:0}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 12px;border-radius:999px;
}
.sec-head{max-width:660px;margin-bottom:48px}
.sec-head h2{font-size:34px;font-weight:700;letter-spacing:-.02em;margin-top:16px}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;height:72px;
  background:rgba(246,244,240,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.site-header.scrolled{height:60px;border-bottom-color:var(--line);background:rgba(246,244,240,.96)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--void);color:var(--accent);
  display:grid;place-items:center;font-size:14px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.brand-text{display:flex;flex-direction:column;line-height:1.14}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.brand-text i{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--ink-3)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:10px 12px;font-size:15px;font-weight:500;color:var(--ink);
  transition:color .2s var(--ease);white-space:nowrap;
}
.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 var(--ease);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-2);display:grid;place-items:center;
  cursor:pointer;transition:all .18s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.burger{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-ink);transform:translateY(-2px);box-shadow:var(--sh-2);color:#fff}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.28);color:#F2F0FF}
.btn-ghost:hover{border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- hero ---------- */
.cat-hero{position:relative;padding:60px 0 76px;overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(108,76,241,.09) 1px,transparent 1px);
  background-size:24px 24px;opacity:.7;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:var(--line)}
h1{font-size:50px;font-weight:700;line-height:1.14;letter-spacing:-.02em;margin-top:18px}
.lead{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{
  font-size:13px;color:var(--ink-2);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;
}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
}

/* ---------- anchor pills ---------- */
.anchor-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.6)}
.anchor-pills{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-pills::-webkit-scrollbar{display:none}
.anchor-pills a{
  flex:0 0 auto;font-size:14px;font-weight:500;color:var(--ink-2);
  background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 18px;
  transition:all .18s var(--ease);
}
.anchor-pills a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ---------- alternating rows ---------- */
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.alt-row:first-child{border-top:0;padding-top:0}
.alt-row.reverse .alt-media{order:2}
.alt-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.alt-row:hover .alt-media img{transform:scale(1.02);box-shadow:var(--sh-2)}
.num-badge{
  display:inline-grid;place-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.06em;
}
.alt-body h3{font-size:24px;font-weight:600;margin-top:16px}
.alt-body>p{margin-top:14px;color:var(--ink-2);font-size:16px}
.tick-list{display:grid;gap:10px;margin:20px 0 0;padding:0}
.tick-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.75;color:var(--ink-2)}
.tick-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;
  position:absolute;left:0;top:5px;color:var(--accent);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:22px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-arrow i{font-size:12px;transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- dark checklist ---------- */
.dark-band{position:relative;background:var(--void);color:#F2F0FF;padding:88px 0;overflow:hidden}
.dark-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:28px 28px;opacity:.5;pointer-events:none;
}
.dark-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,196,.6),transparent);
}
.dark-band .wrap{position:relative;z-index:1}
.dark-head{max-width:620px;margin-bottom:52px}
.dark-head h2{font-size:34px;font-weight:700;letter-spacing:-.02em;margin-top:16px;color:#fff}
.dark-head p{margin-top:14px;color:#B9B3D6;font-size:16px}
.check-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.check-item{padding:6px 28px;border-left:1px solid rgba(255,255,255,.12)}
.check-item:first-child{border-left:0;padding-left:0}
.check-item .num{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.08em}
.check-item h3{font-size:18px;font-weight:600;margin-top:14px;color:#fff}
.check-item p{margin-top:10px;font-size:14px;line-height:1.8;color:#B9B3D6}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-q i{color:var(--brand);font-size:15px;transition:transform .24s var(--ease);flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2);max-width:820px;padding-bottom:24px}
.faq-item.open .faq-a{max-height:340px}

/* ---------- cta band ---------- */
.cta-band{background:var(--void-2);padding:72px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.42),transparent 68%);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:30px;font-weight:700;color:#fff;letter-spacing:-.01em;max-width:620px}
.cta-inner p{margin-top:12px;color:#B9B3D6;font-size:15px;max-width:560px}
.cta-right{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta-note{font-size:12px;color:#8B8798}

/* ---------- footer ---------- */
.site-footer{background:var(--void);color:#B9B3D6;padding:72px 0 28px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.site-footer .brand-text b{color:#F2F0FF}
.site-footer .brand-text i{color:#8B8798}
.site-footer .brand-mark{background:#221E3D;color:var(--accent)}
.foot-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:#B9B3D6;max-width:340px}
.foot-col h4{font-size:14px;font-weight:600;color:#F2F0FF;margin:0 0 16px}
.foot-col ul{display:grid;gap:10px;padding:0;margin:0}
.foot-col a{color:#B9B3D6;transition:color .18s var(--ease)}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:#8B8798;
}

/* ---------- mobile tabbar ---------- */
.tabbar{display:none}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  h1{font-size:44px}
  .hero-grid{gap:40px}
  .alt-row{gap:40px}
  .check-item{padding:6px 20px}
}
@media (max-width:991px){
  .section{padding:76px 0}
  .nav-links{display:none}
  .burger{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  h1{font-size:36px}
  .sec-head h2,.dark-head h2{font-size:28px}
  .alt-row{grid-template-columns:1fr;gap:26px;padding:36px 0}
  .alt-row.reverse .alt-media{order:0}
  .check-grid{grid-template-columns:1fr 1fr;row-gap:36px}
  .check-item:nth-child(3){border-left:0;padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  body{padding-bottom:72px}
  .wrap{padding:0 20px}
  .section{padding:60px 0}
  h1{font-size:31px}
  .lead{font-size:16px}
  .header-actions .btn{display:none}
  .check-grid{grid-template-columns:1fr}
  .check-item{border-left:0;padding-left:0}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column}
  .tabbar{
    display:grid;grid-template-columns:repeat(5,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:120;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -10px 26px -18px rgba(23,21,31,.35);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tab-item{
    position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:4px;min-height:56px;font-size:11px;color:var(--ink-3);
  }
  .tab-item i{font-size:18px}
  .tab-item.active{color:var(--brand)}
  .tab-item.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:2px;border-radius:2px;background:var(--brand);
  }
}
@media (max-width:520px){
  h1{font-size:28px}
  .btn{width:100%}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --void:#0C0A18;
  --void-2:#16132B;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --ink:#17151F;
  --ink-2:#5C5870;
  --ink-3:#8B8798;
  --brand:#6C4CF1;
  --brand-ink:#4A2FD0;
  --brand-soft:#EEE9FF;
  --accent:#2BD9C4;
  --warm:#E8A33D;
  --danger:#D64545;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(23,21,31,.04);
  --sh-2:0 12px 32px -12px rgba(23,21,31,.18);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media (min-width:1440px){.wrap{max-width:1280px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,240,.9);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t);
}
.site-header.scrolled{background:rgba(246,244,240,.97);border-bottom-color:var(--line)}
.header-inner{height:72px;display:flex;align-items:center;gap:20px;transition:height var(--t)}
.site-header.scrolled .header-inner{height:60px}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--brand),var(--brand-ink));
  color:#fff;font-size:15px;
  box-shadow:0 8px 18px -10px rgba(108,76,241,.95);
}
.brand-text{display:flex;flex-direction:column;line-height:1.06}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text i{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--ink-2)}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 13px;font-size:15px;font-weight:500;color:var(--ink);
  border-radius:8px;transition:color var(--t);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color var(--t),border-color var(--t),transform var(--t);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink);cursor:pointer;align-items:center;justify-content:center;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -14px rgba(108,76,241,.95)}
.btn-primary:hover{background:var(--brand-ink);transform:translateY(-1px);box-shadow:0 14px 30px -14px rgba(74,47,208,.95)}
.btn-outline{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#F2F0FF;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;right:18px;bottom:-3px;height:1px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.text-link:hover::after{transform:scaleX(1)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}

/* ============ 文章页头 ============ */
.page-hero{position:relative;background:var(--void);color:#F2F0FF;overflow:hidden;padding:30px 0 62px}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.3;
}
.page-hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(12,10,24,.62) 0%,rgba(12,10,24,.9) 62%,rgba(12,10,24,.97) 100%);
}
.page-hero::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;z-index:3;
  background:linear-gradient(90deg,transparent,rgba(43,217,196,.55),transparent);
}
.page-hero .wrap{position:relative;z-index:2}

.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px}
.crumbs li{display:flex;align-items:center;gap:8px;min-width:0}
.crumbs li+li::before{content:"/";color:rgba(242,240,255,.3)}
.crumbs a{color:rgba(242,240,255,.72);transition:color var(--t)}
.crumbs a:hover{color:var(--accent)}
.crumbs .current{
  max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:rgba(242,240,255,.5);
}
.page-hero .badge{margin-top:26px;background:rgba(108,76,241,.22);color:#C9BCFF}
.page-hero h1{
  margin:16px 0 20px;max-width:920px;
  font-size:clamp(26px,4.2vw,40px);font-weight:700;line-height:1.28;letter-spacing:-.02em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:rgba(242,240,255,.6)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--accent);font-size:13px}

/* ============ 文章主体 ============ */
.article-shell{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;
  padding:52px 0 88px;align-items:start;
}
.article-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:clamp(24px,3.4vw,46px);box-shadow:var(--sh-1);min-width:0;
}
.prose{font-size:17px;line-height:1.85;color:var(--ink);word-wrap:break-word}
.prose>p:first-child{font-size:17.5px;color:var(--ink-2)}
.prose p{margin:0 0 1.2em}
.prose h2{
  position:relative;font-size:26px;font-weight:700;line-height:1.4;letter-spacing:-.01em;
  margin:2em 0 .8em;padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:var(--brand);
}
.prose h3{font-size:20px;font-weight:600;line-height:1.5;margin:1.7em 0 .6em}
.prose h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--ink-2)}
.prose ul,.prose ol{margin:0 0 1.2em}
.prose li{position:relative;padding-left:24px;margin-bottom:.55em}
.prose ul li::before{
  content:"";position:absolute;left:3px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(108,76,241,.12);
}
.prose ol{counter-reset:li}
.prose ol li{counter-increment:li}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.28em;
  width:18px;height:18px;border-radius:6px;background:var(--brand-soft);color:var(--brand);
  font-size:11px;font-weight:700;display:grid;place-items:center;
}
.prose blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:4px solid var(--brand);
  background:var(--brand-soft);border-radius:0 12px 12px 0;
  color:var(--ink-2);font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{
  width:100%;border-radius:var(--r-img);border:1px solid var(--line);
  margin:1.4em 0 .6em;
}
.prose figure{margin:1.6em 0}
.prose figcaption{
  font-size:13px;color:var(--ink-3);text-align:center;line-height:1.7;
}
.prose a{color:var(--brand);border-bottom:1px solid rgba(108,76,241,.35);transition:border-color var(--t)}
.prose a:hover{border-bottom-color:var(--brand)}
.prose table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:1.4em 0;font-size:15px;-webkit-overflow-scrolling:touch;
}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left;white-space:nowrap}
.prose th{background:var(--paper);font-weight:600}
.prose code{
  background:var(--paper);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;
}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

.empty-state{
  padding:56px 20px;text-align:center;border:1px dashed var(--line);
  border-radius:var(--r-card);background:var(--paper);
}
.empty-state i{font-size:44px;color:var(--ink-3);margin-bottom:14px;display:block}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:14px}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;padding:6px 13px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);color:var(--ink-2);
  font-size:13px;transition:all var(--t);
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

.back-row{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.side-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--ink-3);
  text-transform:uppercase;margin-bottom:14px;
}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 2px;font-size:14.5px;color:var(--ink);transition:color var(--t);
}
.side-list a i{font-size:11px;color:var(--ink-3);transition:transform var(--t),color var(--t)}
.side-list a:hover{color:var(--brand)}
.side-list a:hover i{color:var(--brand);transform:translateX(3px)}
.side-cta{background:var(--void-2);border-color:transparent;color:#F2F0FF}
.side-cta h3{font-size:17px;font-weight:700;margin-bottom:8px}
.side-cta p{font-size:13.5px;line-height:1.75;color:#B9B3D6;margin-bottom:16px}
.side-cta .btn-outline{background:transparent;color:#F2F0FF;border-color:rgba(255,255,255,.24)}
.side-cta .btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* ============ 相关推荐 ============ */
.related{padding:0 0 88px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em}
.sec-head p{font-size:14px;color:var(--ink-2);margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.rel-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-2)}
.rel-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 24px}
.rel-body strong{font-size:16px;font-weight:600;line-height:1.55;transition:color var(--t)}
.rel-card:hover .rel-body strong{color:var(--brand)}
.rel-meta{font-size:12.5px;color:var(--ink-3)}

/* ============ 深色 CTA ============ */
.cta-band{position:relative;background:var(--void);color:#F2F0FF;overflow:hidden;padding:64px 0}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,10,24,.95),rgba(22,19,43,.86));
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.cta-inner p{margin-top:10px;font-size:15px;color:#B9B3D6;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--void);color:#B9B3D6;padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.06)}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px}
.foot-brand .brand{margin-bottom:18px}
.foot-brand .brand-text b{color:#F2F0FF}
.foot-brand .brand-text i{color:#8B8798}
.foot-brand p{font-size:14px;line-height:1.85;max-width:340px}
.foot-col h4{font-size:14px;font-weight:600;color:#F2F0FF;margin-bottom:16px;letter-spacing:.02em}
.foot-col ul li{margin-bottom:11px}
.foot-col a{font-size:14px;color:#B9B3D6;transition:color var(--t)}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:#7C7694;
}

/* ============ 移动端底部 Tab ============ */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 26px -20px rgba(23,21,31,.6);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--ink-2);position:relative;transition:color var(--t);
}
.tab-item i{font-size:19px}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item.active::before{
  content:"";position:absolute;top:0;width:24px;height:2px;border-radius:2px;background:var(--brand);
}

/* ============ 移动抽屉 ============ */
.mobile-panel{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:70;background:var(--paper);
  padding:18px;transform:translateY(-10px);opacity:0;pointer-events:none;
  transition:opacity var(--t),transform var(--t);overflow-y:auto;
}
.mobile-panel.open{opacity:1;transform:none;pointer-events:auto}
.mobile-panel a{
  display:block;padding:14px 14px;border-radius:12px;font-size:15px;font-weight:500;
  transition:background var(--t),color var(--t);
}
.mobile-panel a:hover{background:var(--surface)}
.mobile-panel a.active{background:var(--brand-soft);color:var(--brand)}

/* ============ 弹层 ============ */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.is-open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(12,10,24,.66)}
.modal-box{
  position:relative;max-width:560px;margin:6vh auto;background:var(--surface);
  border-radius:20px;padding:32px;box-shadow:0 34px 90px -34px rgba(12,10,24,.6);
  max-height:88vh;overflow-y:auto;
}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  cursor:pointer;display:grid;place-items:center;transition:all var(--t);
}
.modal-close:hover{color:var(--brand);border-color:var(--brand)}
.modal-box h2{font-size:20px;font-weight:700;margin-bottom:8px}
.modal-sub{font-size:13.5px;color:var(--ink-2);margin-bottom:22px;line-height:1.75}

.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field .req{color:var(--danger);font-size:12px;margin-left:4px}
.input{
  width:100%;height:48px;border:1px solid var(--line);border-radius:10px;background:var(--surface);
  padding:0 14px;font-size:15px;transition:border-color var(--t),box-shadow var(--t);
}
textarea.input{height:auto;min-height:104px;padding:12px 14px;line-height:1.65;resize:vertical}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.15)}
.input::placeholder{color:var(--ink-3)}
select.input{appearance:none;background-image:none}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2);line-height:1.7;margin:6px 0 20px}
.check-row input{width:17px;height:17px;margin-top:3px;accent-color:var(--brand);flex:0 0 auto}
.check-row a{color:var(--brand)}
.lead-tip{
  display:none;margin-top:14px;padding:11px 14px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:13.5px;
}
.lead-tip.show{display:block}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-shell{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
  .related-grid{gap:20px}
}
@media (max-width:991px){
  .wrap{padding:0 24px}
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .article-shell{grid-template-columns:1fr;gap:36px;padding:40px 0 72px}
  .article-side{position:static}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .wrap{padding:0 18px}
  .tabbar{display:flex}
  .page-hero{padding:22px 0 48px}
  .crumbs .current{max-width:180px}
  .prose{font-size:16.5px;line-height:1.85}
  .prose h2{font-size:22px}
  .prose h3{font-size:18.5px}
  .related-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:48px 0}
  .foot-bottom{font-size:11.5px}
}
@media (max-width:575px){
  .btn{height:46px;padding:0 18px}
  .header-actions .btn-primary{display:none}
  .modal-box{
    position:absolute;left:0;right:0;bottom:0;margin:0;border-radius:20px 20px 0 0;
    max-height:92vh;padding:24px 18px calc(24px + env(safe-area-inset-bottom));
  }
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --void:#0C0A18;
  --void-2:#16132B;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --ink:#17151F;
  --ink-2:#5C5870;
  --ink-3:#8B8798;
  --brand:#6C4CF1;
  --brand-ink:#4A2FD0;
  --brand-soft:#EEE9FF;
  --accent:#2BD9C4;
  --warm:#E8A33D;
  --danger:#D64545;
  --d-text:#F2F0FF;
  --d-text-2:#B9B3D6;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(23,21,31,.04);
  --sh-2:0 12px 32px -12px rgba(23,21,31,.18);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --sp:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;line-height:1.75;color:var(--ink);background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color: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:3px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-sm{padding:56px 0}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);text-transform:uppercase}
.h2{font-size:34px;font-weight:700;line-height:1.25;letter-spacing:-.01em}
.h3{font-size:23px;font-weight:600;line-height:1.35}
.lead{font-size:17px;color:var(--ink-2);line-height:1.85}
.muted{color:var(--ink-2)}
.small{font-size:14px}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.headersep{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.headersep p{max-width:560px;color:var(--ink-2);font-size:15px}

/* 按钮体系 */
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;position:relative;overflow:hidden;
  transition:background var(--t),border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-main{background:var(--brand);color:#fff}
.btn-main::after{
  content:"";position:absolute;left:14px;top:50%;width:8px;height:8px;border-radius:50%;
  background:var(--accent);transform:translate(-16px,-50%) scale(.2);opacity:0;transition:all var(--t);
}
.btn-main:hover{background:var(--brand-ink);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-main:hover::after{transform:translate(0,-50%) scale(1);opacity:1}
.btn-line{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-line:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);
  position:relative;
}
.text-link::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--brand);transition:width var(--t)}
.text-link:hover::after{width:100%}
.text-link i{transition:transform var(--t)}
.text-link:hover i{transform:translateX(4px)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:height var(--t),background var(--t),border-color var(--t);
}
.site-header.is-stuck{background:rgba(246,244,240,.98);border-bottom-color:var(--line)}
.hd-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height var(--t)}
.site-header.is-stuck .hd-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--void);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
}
.brand-text{display:inline-flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-text i{font-style:normal;font-size:11px;letter-spacing:.24em;color:var(--ink-3)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width var(--t);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{width:100%}
.hd-actions{display:flex;align-items:center;gap:12px}
.search-btn{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);cursor:pointer;
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.search-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.hamburger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;color:var(--ink);cursor:pointer;
}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:var(--surface);
}
.mobile-drawer.open{display:block}
.mobile-drawer ul{padding:8px 0}
.mobile-drawer a{display:block;padding:14px 32px;font-size:16px;font-weight:500;border-bottom:1px solid var(--line)}
.mobile-drawer a.active{color:var(--brand)}

/* 底部 Tab */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -6px 20px -14px rgba(23,21,31,.35);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar ul{display:flex}
.tabbar li{flex:1}
.tabbar a{
  min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-3);position:relative;padding:6px 2px;
}
.tabbar a i{font-size:18px}
.tabbar a.active{color:var(--brand)}
.tabbar a.active i{font-weight:900}
.tabbar a.active::before{
  content:"";position:absolute;top:0;width:20px;height:2px;border-radius:2px;background:var(--brand);
}

/* Hero */
.cat-hero{
  background:var(--paper);position:relative;overflow:hidden;
  padding:64px 0 72px;border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(108,76,241,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;pointer-events:none;
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 30%,transparent);
  mask-image:linear-gradient(to bottom,transparent,#000 30%,transparent);
}
.cat-hero .wrap{position:relative}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:56px;align-items:center}
.cat-hero h1{
  font-size:50px;font-weight:700;line-height:1.14;letter-spacing:-.02em;margin:16px 0 18px;
}
.cat-hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{max-width:560px;font-size:18px;color:var(--ink-2);line-height:1.8}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{display:flex;flex-wrap:wrap;gap:32px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.hero-points div{min-width:120px}
.hero-points b{display:block;font-size:22px;font-weight:700;letter-spacing:-.01em}
.hero-points span{font-size:13px;color:var(--ink-3)}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line)}
.hero-figure figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(12,10,24,.72);color:var(--d-text-2);font-size:12px;
  border-radius:10px;padding:8px 12px;backdrop-filter:blur(4px);
}

/* 锚点胶囊 */
.anchor-bar{position:sticky;top:60px;z-index:40;background:rgba(246,244,240,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  flex:0 0 auto;padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:14px;font-weight:600;color:var(--ink-2);transition:all var(--t);
}
.anchor-scroll a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}

/* 更新条 */
.ticker{background:var(--void-2);color:var(--d-text);padding:20px 0}
.ticker-inner{display:flex;align-items:center;gap:22px;overflow-x:auto;scrollbar-width:none}
.ticker-inner::-webkit-scrollbar{display:none}
.ticker-label{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.12em;color:var(--accent);border:1px solid rgba(43,217,196,.35);border-radius:999px;padding:5px 12px;
}
.ticker-item{
  flex:0 0 auto;display:flex;align-items:baseline;gap:10px;font-size:14px;color:var(--d-text-2);
}
.ticker-item b{color:#fff;font-weight:600}
.ticker-item span{color:var(--accent);font-size:12px}

/* 时间轴 */
.timeline{position:relative;margin-top:8px;padding-left:0}
.tl-item{position:relative;display:grid;grid-template-columns:150px minmax(0,1fr);gap:32px;padding:28px 0}
.tl-item::before{
  content:"";position:absolute;left:149px;top:0;bottom:0;width:1px;background:var(--line);
}
.tl-item:first-child::before{top:38px}
.tl-item:last-child::before{bottom:calc(100% - 38px)}
.tl-mark{position:relative;display:flex;align-items:flex-start;gap:14px}
.tl-node{
  position:absolute;left:143px;top:34px;width:13px;height:13px;border-radius:50%;
  background:var(--surface);border:2px solid var(--brand);z-index:2;
}
.tl-item.is-now .tl-node{background:var(--brand);box-shadow:0 0 0 5px rgba(108,76,241,.16)}
.tl-step{font-size:12px;font-weight:600;letter-spacing:.1em;color:var(--ink-3)}
.tl-time{display:block;font-size:19px;font-weight:700;letter-spacing:-.01em;margin-top:4px}
.tl-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.tl-body:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px)}
.tl-body h3{font-size:20px;font-weight:600;margin-bottom:10px}
.tl-body p{font-size:15px;color:var(--ink-2);line-height:1.8}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tl-tags span{
  font-size:12px;font-weight:600;color:var(--ink-2);background:var(--paper);
  border:1px solid var(--line);border-radius:999px;padding:4px 10px;
}

/* 资讯分类卡 */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;gap:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.news-card:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-card .thumb{
  flex:0 0 168px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
}
.news-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.news-card:hover .thumb img{transform:scale(1.03)}
.news-card h3{font-size:19px;font-weight:600;line-height:1.4;margin:10px 0 8px;transition:color var(--t)}
.news-card:hover h3{color:var(--brand)}
.news-card p{font-size:14px;color:var(--ink-2);line-height:1.7}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:14px;font-size:12px;color:var(--ink-3)}
.news-meta i{color:var(--accent)}

/* 深色数据区 */
.stats{background:var(--void);color:var(--d-text);position:relative;overflow:hidden}
.stats::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:34px 34px;opacity:.5;pointer-events:none;
}
.stats .wrap{position:relative}
.stats h2{font-size:32px;font-weight:700;color:#fff;letter-spacing:-.01em}
.stats .lead{color:var(--d-text-2);max-width:640px;margin-top:14px}
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding-top:40px}
.stat-cell{padding:0 28px;border-left:1px solid rgba(255,255,255,.12)}
.stat-cell:first-child{border-left:0;padding-left:0}
.stat-cell b{display:block;font-size:44px;font-weight:700;color:#fff;line-height:1.1;letter-spacing:-.02em}
.stat-cell b i{font-style:normal;font-size:16px;color:var(--accent);margin-left:6px;font-weight:600}
.stat-cell span{display:block;font-size:14px;color:var(--d-text-2);margin-top:10px}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;text-align:left;padding:22px 0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);transition:color var(--t);
}
.faq-q:hover{color:var(--brand)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;transition:transform var(--t);
}
.faq-item.open .faq-q .sign{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a p{padding:0 0 22px;font-size:15px;color:var(--ink-2);line-height:1.85;max-width:840px}

/* CTA 横幅 */
.cta-band{background:var(--void-2);color:var(--d-text);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,196,.6),transparent);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:64px 0}
.cta-inner h2{font-size:30px;font-weight:700;color:#fff;letter-spacing:-.01em;max-width:560px}
.cta-inner p{font-size:14px;color:var(--d-text-2);margin-top:12px;max-width:520px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.privacy-note{
  background:rgba(246,244,240,.06);border:1px solid rgba(255,255,255,.14);border-radius:12px;
  padding:12px 16px;font-size:13px;color:var(--d-text-2);max-width:420px;
}
.privacy-note a{color:var(--accent)}

/* 页脚 */
.site-footer{background:var(--void);color:var(--d-text-2);padding:72px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:18px}
.foot-brand .brand-text b{color:#fff}
.foot-brand .brand-text i{color:var(--d-text-2)}
.foot-brand p{font-size:14px;line-height:1.8;max-width:340px}
.foot-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14px;color:var(--d-text-2)}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#8B87A8;
}

/* 弹层 */
.modal-content{border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh-2)}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px}
.modal-title{font-size:20px;font-weight:700}
.modal-body{padding:24px}
.modal-footer{border-top:1px solid var(--line);padding:16px 24px}
.form-label{font-size:14px;font-weight:600;margin-bottom:6px}
.form-label .req{color:var(--danger)}
.form-control,.form-select{
  height:48px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  font-size:15px;padding:0 14px;
}
textarea.form-control{height:auto;min-height:110px;padding:12px 14px;line-height:1.7}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.15);
}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-label{font-size:13px;color:var(--ink-2)}
.btn-submit{
  width:100%;height:52px;border:0;border-radius:10px;background:var(--brand);color:#fff;
  font-size:16px;font-weight:600;transition:background var(--t),transform var(--t);
}
.btn-submit:hover{background:var(--brand-ink);transform:translateY(-2px)}

/* 进场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms ease,transform 600ms cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 380px;gap:40px}
  .cat-hero h1{font-size:44px}
}
@media (max-width:991.98px){
  .wrap{padding:0 24px}
  .nav-links{display:none}
  .hamburger{display:inline-flex}
  .search-btn{display:none}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .cat-hero{padding:48px 0 56px}
  .cat-hero h1{font-size:38px}
  .hero-figure img{aspect-ratio:16/9}
  .news-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0}
  .stat-cell:nth-child(3){border-left:0;padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0}
  .cta-actions{align-items:flex-start}
  .h2{font-size:30px}
}
@media (max-width:767.98px){
  .tabbar{display:block}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .anchor-bar{top:0}
  .tl-item{grid-template-columns:1fr;gap:12px;padding:22px 0}
  .tl-item::before,.tl-node{display:none}
  .tl-step{font-size:11px}
  .tl-time{font-size:17px}
  .tl-body{padding:20px}
  .news-card{flex-direction:column;gap:16px}
  .news-card .thumb{flex:none}
  .site-footer{padding:56px 0 24px}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px}
  body{font-size:16px}
  .cat-hero h1{font-size:30px}
  .cat-hero{padding:36px 0 48px}
  .hero-sub{font-size:16px}
  .hero-btns .btn-main,.hero-btns .btn-line{width:100%}
  .hero-points{gap:20px 28px}
  .section{padding:56px 0}
  .h2{font-size:26px}
  .headersep{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .stat-cell b{font-size:34px}
  .stat-cell{padding:0 16px}
  .foot-grid{grid-template-columns:1fr}
  .cta-inner h2{font-size:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --void:#0C0A18;
  --void-2:#16132B;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --ink:#17151F;
  --ink-2:#5C5870;
  --ink-3:#8B8798;
  --brand:#6C4CF1;
  --brand-ink:#4A2FD0;
  --brand-soft:#EEE9FF;
  --accent:#2BD9C4;
  --warm:#E8A33D;
  --danger:#D64545;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,21,31,.04);
  --sh-2:0 12px 32px -12px rgba(23,21,31,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;
  --header-h:72px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input,select,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.96);
  -webkit-backdrop-filter:saturate(140%) blur(6px);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h);transition:height .2s var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-ink));
  color:#fff;font-size:14px;
  box-shadow:0 6px 16px -8px rgba(108,76,241,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.06;}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.brand-text i{font-style:normal;font-size:12px;letter-spacing:.14em;color:var(--brand);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:var(--ink);
  border-radius:8px;transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  color:var(--ink-2);border:1px solid transparent;transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--brand);background:var(--surface);border-color:var(--line);}
.hamburger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:var(--surface);
  padding:12px 32px 20px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;padding:12px 4px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-child{border-bottom:none;}
.mobile-drawer a.active{color:var(--brand);font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  position:relative;overflow:hidden;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -14px rgba(108,76,241,.9);}
.btn-primary::before{
  content:"";position:absolute;left:14px;top:50%;width:8px;height:8px;border-radius:50%;
  background:var(--accent);transform:translate(-16px,-50%) scale(.4);opacity:0;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.btn-primary:hover{background:var(--brand-ink);color:#fff;transform:translateY(-1px);}
.btn-primary:hover::before{transform:translate(0,-50%) scale(1);opacity:1;}
.btn-outline{border:1px solid var(--line);background:var(--surface);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(23,21,31,.16);background:transparent;color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-dark-ghost{border:1px solid rgba(255,255,255,.28);color:#F2F0FF;background:transparent;}
.btn-dark-ghost:hover{border-color:var(--accent);color:var(--accent);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .2s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}
.text-link{position:relative;display:inline-block;font-weight:600;color:var(--brand);}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--brand);transition:width .24s var(--ease);}
.text-link:hover::after{width:100%;}

/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.tag{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--ink-2);
}

/* ---------- hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:28px 0 84px;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:right center;
  opacity:.09;pointer-events:none;
}
.hero-cat .wrap{position:relative;z-index:1;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:28px;}
.crumbs a:hover{color:var(--brand);}
.crumbs span[aria-current]{color:var(--ink);font-weight:600;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:48px;align-items:center;}
.hero-copy h1{
  font-size:clamp(30px,4.1vw,50px);font-weight:700;line-height:1.16;
  letter-spacing:-.02em;margin:18px 0 0;max-width:16em;
}
.hero-copy .lead{margin-top:18px;font-size:17px;line-height:1.85;color:var(--ink-2);max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:36px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.hero-meta li{display:flex;flex-direction:column;gap:2px;}
.hero-meta b{font-size:24px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
.hero-meta span{font-size:13px;color:var(--ink-3);letter-spacing:.02em;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
  box-shadow:var(--sh-2);
}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:40;
  background:rgba(246,244,240,.94);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.site-header.is-scrolled ~ .anchor-bar{top:60px;}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 32px;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  font-size:14px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:all .18s var(--ease);
}
.pill:hover{color:var(--brand);border-color:var(--brand);}
.pill.active{background:var(--brand);border-color:var(--brand);color:#fff;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.02em;margin-top:14px;}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.sec-head-row h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.02em;margin-top:14px;max-width:22em;}

/* ---------- compare table ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);box-shadow:var(--sh-1);
}
.cmp-table{width:100%;border-collapse:collapse;min-width:760px;}
.cmp-table caption{text-align:left;padding:20px 24px 0;font-size:13px;color:var(--ink-3);}
.cmp-table th,.cmp-table td{
  padding:16px 24px;text-align:left;border-bottom:1px solid var(--line);
  font-size:15px;vertical-align:top;line-height:1.7;
}
.cmp-table thead th{
  background:var(--brand-soft);color:var(--brand-ink);
  font-size:12px;font-weight:700;letter-spacing:.06em;
}
.cmp-table tbody td:first-child{font-weight:600;width:24%;}
.cmp-table tbody td:not(:first-child){color:var(--ink-2);}
.cmp-table tbody tr:hover td{background:#FBFAFF;}
.cmp-table tbody tr:last-child td{border-bottom:none;}
.table-note{margin-top:16px;font-size:13px;color:var(--ink-3);}

/* ---------- dual columns ---------- */
.dual{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.dual-col{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.dual-col:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D8D2EE;}
.dual-col-accent{background:var(--brand-soft);border-color:#DAD2FF;}
.dual-col h3{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:600;margin-bottom:18px;}
.dual-col h3 i{color:var(--brand);font-size:16px;}
.dual-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px dashed var(--line);
}
.dual-list li:last-child{border-bottom:none;padding-bottom:0;}
.dual-list b{font-weight:600;font-size:15px;}
.dual-list span{font-size:14px;color:var(--ink-2);text-align:right;flex:0 0 auto;max-width:52%;}

/* ---------- explain ---------- */
.explain{
  position:relative;overflow:hidden;background:var(--surface);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.explain::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;opacity:.07;pointer-events:none;
}
.explain .wrap{position:relative;z-index:1;}
.explain-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:48px;align-items:start;}
.explain-body p{color:var(--ink-2);font-size:16px;line-height:1.9;margin-bottom:20px;}
.explain-body p:last-child{margin-bottom:0;}
.explain-body strong{color:var(--ink);font-weight:600;}
.side-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;
}
.side-card h3{font-size:17px;font-weight:600;margin-bottom:16px;}
.side-card li{display:flex;gap:10px;padding:10px 0;font-size:14px;color:var(--ink-2);border-bottom:1px solid var(--line);}
.side-card li:last-child{border-bottom:none;}
.side-card i{color:var(--accent);font-size:13px;margin-top:5px;}

/* ---------- entry list ---------- */
.entry-list{border-top:1px solid var(--line);}
.entry{
  display:grid;grid-template-columns:64px minmax(0,1fr) auto;gap:24px;align-items:start;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background-color .18s var(--ease);
}
.entry:hover{background:rgba(108,76,241,.035);}
.entry-no{
  font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);
  padding:4px 10px;text-align:center;font-variant-numeric:tabular-nums;
}
.entry h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.entry p{font-size:15px;color:var(--ink-2);line-height:1.8;max-width:56em;}
.entry-tags{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- qa ---------- */
.qa-list{border-top:1px solid var(--line);}
.qa{
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:40px;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.qa h3{font-size:17px;font-weight:600;line-height:1.6;position:relative;padding-left:18px;}
.qa h3::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;
  background:var(--brand);opacity:.85;
}
.qa p{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- cta band ---------- */
.cta-section{padding:96px 0 72px;}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--void);color:#F2F0FF;
  border-radius:24px;padding:56px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,196,.7),transparent);
}
.cta-band .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;}
.cta-band h2{font-size:clamp(23px,2.5vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.02em;}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:#B9B3D6;max-width:44em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-fine{margin-top:22px;font-size:12px;color:#8B8798;letter-spacing:.02em;position:relative;z-index:1;}

/* ---------- privacy note ---------- */
.privacy-note{
  margin:0 0 72px;padding:16px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  font-size:13px;line-height:1.8;color:var(--ink-2);
}
.privacy-note a{color:var(--brand);font-weight:600;}

/* ---------- footer ---------- */
.site-footer{background:var(--void);color:#B9B3D6;padding:72px 0 32px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.foot-brand .brand{margin-bottom:18px;}
.foot-brand .brand-text b{color:#F2F0FF;}
.foot-brand .brand-text i{color:var(--accent);}
.foot-brand p{font-size:14px;line-height:1.9;max-width:34em;color:#9E98BC;}
.foot-col h4{font-size:14px;font-weight:600;color:#F2F0FF;letter-spacing:.04em;margin-bottom:16px;}
.foot-col li{margin-bottom:10px;}
.foot-col a{font-size:14px;color:#9E98BC;transition:color .18s var(--ease);}
.foot-col a:hover{color:var(--accent);}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  font-size:12px;color:#8B8798;
}

/* ---------- tab bar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 22px -14px rgba(23,21,31,.35);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:56px;padding:8px 0 10px;font-size:11px;color:var(--ink-3);position:relative;
  transition:color .18s var(--ease);
}
.tabbar a i{font-size:19px;}
.tabbar a.active{color:var(--brand);}
.tabbar a.active::before{
  content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;background:var(--brand);
}

/* ---------- modal ---------- */
.lead-modal{
  position:fixed;inset:0;z-index:90;display:none;
  align-items:center;justify-content:center;padding:24px;
  background:rgba(12,10,24,.55);
}
.lead-modal.open{display:flex;}
.lead-card{
  width:100%;max-width:520px;background:var(--surface);
  border-radius:20px;padding:32px;box-shadow:0 30px 70px -30px rgba(12,10,24,.6);
  max-height:88vh;overflow-y:auto;
}
.lead-card h2{font-size:20px;font-weight:700;letter-spacing:-.01em;}
.lead-card .hint{margin-top:8px;font-size:13px;color:var(--ink-2);}
.lead-form{margin-top:22px;display:grid;gap:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;}
.field .req{color:var(--danger);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#FDFCFA;padding:12px 14px;font-size:15px;color:var(--ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input,.field select{height:48px;}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.15);
}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2);line-height:1.7;}
.check input{margin-top:3px;width:16px;height:16px;accent-color:var(--brand);}
.lead-form .btn{width:100%;height:52px;}
.modal-close{
  position:absolute;top:20px;right:20px;width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;color:var(--ink-3);border:1px solid var(--line);
}
.lead-card{position:relative;}
.modal-close:hover{color:var(--brand);border-color:var(--brand);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}
.reveal:nth-child(2){transition-delay:.06s;}
.reveal:nth-child(3){transition-delay:.12s;}
.reveal:nth-child(4){transition-delay:.18s;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--wrap:1120px;}
  .wrap{padding:0 24px;}
  .anchor-inner{padding:14px 24px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .section{padding:72px 0;}
  .cta-section{padding:72px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:-1;}
  .hero-media img{aspect-ratio:16/9;}
  .hero-cat{padding:24px 0 64px;}
  .explain-grid{grid-template-columns:1fr;gap:32px;}
  .qa{grid-template-columns:1fr;gap:12px;}
  .entry{grid-template-columns:56px minmax(0,1fr);gap:18px;}
  .entry-tags{grid-column:2;justify-content:flex-start;}
  .cta-band{padding:40px 28px;}
  .cta-band .cta-inner{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .tabbar{display:flex;}
  body{padding-bottom:72px;}
  .anchor-bar{top:60px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .wrap{padding:0 18px;}
  .anchor-inner{padding:12px 18px;}
  .header-actions .btn{display:none;}
  .hero-meta{gap:24px;}
  .hero-meta b{font-size:20px;}
  .section{padding:56px 0;}
  .dual{grid-template-columns:1fr;}
  .dual-col{padding:22px;}
  .explain-body p{font-size:15px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .lead-modal{padding:0;align-items:flex-end;}
  .lead-card{max-width:100%;border-radius:20px 20px 0 0;padding:26px 20px calc(26px + env(safe-area-inset-bottom));max-height:92vh;}
  .privacy-note{margin-bottom:48px;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:575px){
  .hero-copy h1{font-size:29px;}
  .sec-head h2,.sec-head-row h2{font-size:23px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category4 */
:root{
  --void:#0C0A18;
  --void-2:#16132B;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --ink:#17151F;
  --ink-2:#5C5870;
  --ink-3:#8B8798;
  --brand:#6C4CF1;
  --brand-ink:#4A2FD0;
  --brand-soft:#EEE9FF;
  --accent:#2BD9C4;
  --warm:#E8A33D;
  --danger:#D64545;
  --r-btn:10px;
  --r-sm:12px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 1px 2px rgba(23,21,31,.04);
  --sh-2:0 12px 32px -12px rgba(23,21,31,.18);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-ink)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px;width:100%}
.nums{font-variant-numeric:tabular-nums}
::selection{background:rgba(108,76,241,.2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,240,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t);
}
.site-header.is-stuck{background:rgba(246,244,240,.97);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height var(--t)}
.site-header.is-stuck .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--void);color:#fff;
  display:grid;place-items:center;font-size:13px;
  box-shadow:0 4px 12px -4px rgba(12,10,24,.55);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:.02em}
.brand-text i{font-style:normal;font-size:11px;font-weight:600;letter-spacing:.18em;color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 13px;
  font-size:15px;font-weight:500;color:var(--ink);border-radius:8px;
  transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left center;transition:transform var(--t);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--surface);
  border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
  transition:border-color var(--t);
}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--surface)}
.mobile-drawer.open{display:block}
.mobile-drawer .wrap{display:flex;flex-direction:column;padding-top:8px;padding-bottom:16px}
.mobile-drawer a{padding:13px 2px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-drawer a:last-child{border-bottom:0}
.mobile-drawer a.active{color:var(--brand);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;overflow:hidden;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary::after{
  content:"";position:absolute;left:9px;top:50%;width:6px;height:6px;border-radius:50%;
  background:var(--accent);opacity:0;transform:translate(-6px,-50%);transition:opacity var(--t),transform 320ms var(--t);
}
.btn-primary:hover{background:var(--brand-ink);color:#fff;box-shadow:0 10px 24px -12px rgba(74,47,208,.75)}
.btn-primary:hover::after{opacity:1;transform:translate(0,-50%)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-onDark{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-onDark:hover{border-color:var(--accent);color:var(--accent)}
.btn-block{width:100%;height:52px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;transition:border-color var(--t),gap var(--t);
}
.text-link:hover{border-bottom-color:var(--brand);gap:10px}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{background:var(--paper);border-bottom:1px solid var(--line)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--ink-3)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line)}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs [aria-current]{color:var(--ink);font-weight:600}

/* ---------- hero ---------- */
.cat-hero{position:relative;background:var(--paper);padding:52px 0 46px;overflow:hidden;border-bottom:1px solid var(--line)}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(108,76,241,.12) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.cat-hero h1{font-size:clamp(30px,4.3vw,50px);font-weight:700;line-height:1.15;margin:18px 0 16px}
.lede{font-size:18px;color:var(--ink-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats b{font-size:22px;font-weight:700;letter-spacing:-.02em}
.hero-stats span{font-size:13px;color:var(--ink-3)}
.hero-media{margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- anchor pills ---------- */
.anchor-bar-wrap{background:var(--paper);padding-top:8px}
.anchor-bar{display:flex;gap:10px;overflow-x:auto;padding:16px 0 20px;scrollbar-width:none}
.anchor-bar::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:14px;font-weight:500;
  transition:border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-1)}

/* ---------- sections ---------- */
.section{padding:80px 0;scroll-margin-top:92px}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:700}
.sec-head p{margin-top:12px;font-size:16px;color:var(--ink-2)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:34px}

/* ---------- rank list ---------- */
.rank-list{border-top:1px solid var(--line)}
a.rank-item{
  display:grid;grid-template-columns:66px 1fr 24px;gap:20px;align-items:center;
  padding:22px 6px;border-bottom:1px solid var(--line);color:var(--ink);
  transition:background var(--t),padding-left var(--t);
}
a.rank-item:hover{background:rgba(108,76,241,.045);color:var(--ink);padding-left:12px}
.rank-no{font-size:24px;font-weight:700;color:var(--brand);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.rank-body h3{font-size:17px;font-weight:600;margin-bottom:4px}
.rank-body p{margin:0;font-size:14px;line-height:1.7;color:var(--ink-2)}
.rank-arrow{color:var(--ink-3);transition:transform var(--t),color var(--t)}
a.rank-item:hover .rank-arrow{transform:translateX(4px);color:var(--brand)}

/* ---------- faq ---------- */
.faq-group{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);
  box-shadow:var(--sh-1);transition:border-color var(--t),box-shadow var(--t);
  scroll-margin-top:100px;
}
.faq-item.open{border-color:rgba(108,76,241,.45);box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--ink);transition:color var(--t);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:12px;
  transition:transform 240ms cubic-bezier(.2,.7,.3,1),background var(--t),color var(--t);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-a-inner{padding:0 20px 22px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.faq-a-inner p{margin:0 0 10px}
.faq-a-inner p:last-child{margin-bottom:0}

/* ---------- reference list ---------- */
.ref-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.ref-item{
  display:flex;gap:16px;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);box-shadow:var(--sh-1);transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.ref-item:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-2)}
.ref-no{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.ref-body h3{font-size:16px;font-weight:600;margin-bottom:4px}
.ref-body p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-2)}

/* ---------- long cards ---------- */
.long-card{
  display:grid;grid-template-columns:290px 1fr;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;background:var(--surface);box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
  margin-bottom:20px;color:var(--ink);
}
.long-card:last-child{margin-bottom:0}
.long-card:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px);color:var(--ink)}
.long-card figure{margin:0;overflow:hidden;background:var(--brand-soft)}
.long-card img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.long-card:hover img{transform:scale(1.03)}
.long-card-body{padding:28px 32px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.long-card-body h3{font-size:20px;font-weight:600}
.long-card-body p{font-size:15px;color:var(--ink-2)}
.long-card-body .text-link{margin-top:4px}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--void);color:#F2F0FF;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.3;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,10,24,.55) 0%,rgba(12,10,24,.94) 100%);
}
.cta-inner{position:relative;z-index:1;padding:76px 0;max-width:700px}
.cta-inner .eyebrow{background:rgba(43,217,196,.14);color:var(--accent)}
.cta-inner h2{font-size:clamp(24px,3.1vw,36px);font-weight:700;color:#F2F0FF;margin:18px 0 14px}
.cta-inner p{color:#B9B3D6;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.cta-note{margin-top:16px;font-size:13px;color:#8B8798}

/* ---------- privacy bar ---------- */
.privacy-section{padding:40px 0 64px}
.privacy-bar{
  display:flex;gap:12px;align-items:flex-start;padding:16px 18px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);
  font-size:13px;line-height:1.8;color:var(--ink-2);
}
.privacy-bar i{color:var(--brand);margin-top:4px}
.privacy-bar a{font-weight:600}

/* ---------- footer ---------- */
.site-footer{background:var(--void);color:#B9B3D6;padding:68px 0 26px}
.site-footer .brand{color:#F2F0FF}
.site-footer .brand-mark{background:var(--brand);color:#fff}
.site-footer .brand-text i{color:var(--accent)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:330px;color:#B9B3D6}
.foot-col h4{font-size:15px;font-weight:600;color:#F2F0FF;margin-bottom:16px}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:#B9B3D6;transition:color var(--t),padding-left var(--t)}
.foot-col a:hover{color:var(--accent);padding-left:4px}
.foot-bottom{
  margin-top:52px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:#8B8798;
}

/* ---------- modal ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(12,10,24,.62);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.modal-mask.open{display:flex}
.modal-card{
  width:100%;max-width:520px;background:var(--surface);border-radius:var(--r-xl);padding:28px;
  box-shadow:0 30px 70px -24px rgba(12,10,24,.6);animation:modalIn 260ms cubic-bezier(.2,.7,.3,1);
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.modal-head h3{font-size:20px;font-weight:700}
.modal-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-2);cursor:pointer;transition:border-color var(--t),color var(--t);
}
.modal-close:hover{border-color:var(--brand);color:var(--brand)}
.modal-sub{margin-top:8px;font-size:14px;color:var(--ink-2)}
#contactForm{margin-top:20px}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.req{color:var(--danger);font-weight:600}
.field{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface);font-size:15px;outline:none;
  transition:border-color var(--t),box-shadow var(--t);
}
.field::placeholder{color:var(--ink-3)}
.field:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.15)}
textarea.field{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2);line-height:1.7;margin-bottom:18px}
.check-row input{margin-top:4px;accent-color:var(--brand);width:16px;height:16px;flex:0 0 auto}
.form-note{margin-top:14px;font-size:14px;color:var(--brand);text-align:center}

/* ---------- tabbar ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:120;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -6px 22px -14px rgba(23,21,31,.34);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1 1 0;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:var(--ink-3);font-size:11px;position:relative;transition:color var(--t);
}
.tab-item i{font-size:18px}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item.active::before{content:"";position:absolute;top:0;width:20px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms cubic-bezier(.2,.7,.3,1),transform 520ms cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 24px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .tabbar{display:flex}
  body{padding-bottom:72px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .section{padding:64px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:767.98px){
  .wrap{padding:0 18px}
  body{font-size:16px}
  .cat-hero{padding:34px 0 32px}
  .hero-stats{gap:20px}
  .long-card{grid-template-columns:1fr}
  .long-card img{aspect-ratio:16/9}
  .long-card-body{padding:22px 20px}
  .ref-grid{grid-template-columns:1fr}
  a.rank-item{grid-template-columns:46px 1fr;gap:14px;padding:18px 2px}
  .rank-arrow{display:none}
  .rank-no{font-size:20px}
  .section{padding:56px 0}
  .cta-inner{padding:60px 0}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-card{border-radius:20px 20px 0 0;max-height:92vh;overflow:auto;padding:24px 20px 28px}
}
@media (max-width:575.98px){
  .foot-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .privacy-section{padding:28px 0 56px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}