/* roulang page: index */
:root{
  --bg:#060A14;
  --panel:#0C1424;
  --panel-2:#0E1728;
  --primary:#1BC8FF;
  --primary-deep:#0A7FB5;
  --accent:#6C4DFF;
  --mint:#4DE8B0;
  --amber:#FFB020;
  --text:#E6EFFB;
  --text-2:rgba(230,239,251,.64);
  --text-3:rgba(230,239,251,.42);
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.05);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --shadow-card:0 12px 30px -16px rgba(0,0,0,.7);
  --shadow-hover:0 0 0 1px rgba(27,200,255,.28), 0 20px 44px -20px rgba(27,200,255,.35);
  --side-w:240px;
}
@media (min-width:1440px){ :root{ --side-w:260px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:88px; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,p,figure{margin:0;}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
ul,ol{ margin:0; padding:0; list-style:none; }
button,input,select,textarea{ font:inherit; color:inherit; }
button{ cursor:pointer; }
:focus-visible{ outline:2px solid var(--primary); outline-offset:2px; }
::selection{ background:rgba(27,200,255,.3); color:#fff; }

/* 背景装饰 */
.bg-decor{
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(760px 540px at 6% -4%, rgba(27,200,255,.12), transparent 64%),
    radial-gradient(700px 560px at 102% 94%, rgba(108,77,255,.12), transparent 62%);
}
.bg-decor::after{
  content:""; position:absolute; inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px);
  background-size:8px 8px;
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 68%);
  mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 68%);
}

/* 布局骨架 */
.page-shell{ padding-left:var(--side-w); }
.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }
.section{ padding:96px 0; }
.section-sm{ padding:64px 0; }

/* 侧栏 */
.sidebar{
  position:fixed; top:0; left:0; bottom:0; width:var(--side-w); z-index:60;
  display:flex; flex-direction:column; gap:8px;
  padding:0 16px 20px;
  background:rgba(12,20,36,.92);
  border-right:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  overflow-y:auto;
}
.brand{ display:flex; align-items:center; gap:10px; height:72px; flex:0 0 auto; }
.brand-mark{
  width:36px; height:36px; border-radius:10px; display:grid; place-items:center;
  font-size:18px; font-weight:800; color:var(--primary);
  background:var(--glass); border:1px solid rgba(27,200,255,.35);
  box-shadow:0 0 18px -6px rgba(27,200,255,.7);
}
.brand-text strong{ display:block; font-size:15px; font-weight:700; line-height:1.25; }
.brand-text em{ display:block; font-style:normal; font-size:11px; color:var(--text-3); letter-spacing:.06em; }
.side-nav{ display:flex; flex-direction:column; gap:4px; margin-top:12px; }
.nav-item{
  position:relative; display:flex; align-items:center; gap:12px;
  height:44px; padding:0 12px; border-radius:var(--r-sm);
  font-size:14px; color:var(--text-2);
  transition:background .2s ease, color .2s ease, transform .2s ease;
}
.nav-ico{ width:18px; height:18px; flex:0 0 18px; color:currentColor; }
.nav-item:hover{ color:var(--text); background:var(--glass); }
.nav-item:hover::before{
  content:""; position:absolute; left:-16px; top:50%; transform:translateY(-50%);
  width:3px; height:20px; border-radius:2px; background:var(--primary);
  box-shadow:0 0 12px rgba(27,200,255,.85);
}
.nav-item.active{ background:var(--glass); color:var(--primary); }
.nav-item.active::before{
  content:""; position:absolute; left:-16px; top:50%; transform:translateY(-50%);
  width:3px; height:22px; border-radius:2px; background:var(--primary);
  box-shadow:0 0 14px rgba(27,200,255,.9);
}
.side-cta{
  margin-top:auto; padding:18px; border-radius:var(--r-md);
  background:var(--glass); border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.side-cta-title{ font-size:14px; font-weight:600; margin-bottom:6px; }
.side-cta-desc{ font-size:12px; color:var(--text-3); line-height:1.7; margin-bottom:12px; }
.side-foot{ font-size:11px; color:var(--text-3); padding:14px 4px 0; letter-spacing:.04em; }

/* 顶部移动栏 + 抽屉 */
.topbar{
  display:none; position:fixed; top:0; left:0; right:0; height:60px; z-index:70;
  align-items:center; justify-content:space-between; padding:0 16px;
  background:rgba(6,10,20,.88); border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
}
.hamburger{
  width:40px; height:40px; border-radius:10px; display:grid; place-items:center;
  background:var(--glass); border:1px solid var(--line); color:var(--text);
}
.hamburger span{ display:block; width:16px; height:1.6px; background:currentColor; margin:3px 0; border-radius:2px; }
.drawer{
  position:fixed; top:0; right:0; bottom:0; width:280px; z-index:90;
  padding:18px 16px; display:flex; flex-direction:column; gap:6px;
  background:#0A1220; border-left:1px solid var(--line);
  transform:translateX(102%); transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.open{ transform:none; }
.drawer .nav-item{ height:46px; font-size:15px; }
.drawer-overlay{
  position:fixed; inset:0; z-index:80; opacity:0; pointer-events:none;
  background:rgba(6,10,20,.7); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  transition:opacity .24s ease;
}
.drawer-overlay.open{ opacity:1; pointer-events:auto; }
.drawer-close{
  align-self:flex-end; width:36px; height:36px; border-radius:10px;
  background:var(--glass); border:1px solid var(--line); color:var(--text-2);
  display:grid; place-items:center; margin-bottom:6px;
}

/* 文字层级 */
.h1{ font-size:clamp(28px,4.4vw,52px); line-height:1.15; font-weight:800; letter-spacing:-.01em; margin:18px 0 16px; }
.h2{ font-size:clamp(24px,2.6vw,32px); line-height:1.28; font-weight:700; margin:14px 0 10px; }
.h3{ font-size:20px; line-height:1.4; font-weight:600; margin:0 0 10px; }
.lead{ font-size:17px; line-height:1.85; color:var(--text-2); max-width:56ch; }
.muted{ color:var(--text-2); }
.dim{ color:var(--text-3); }

/* 标签与徽章 */
.chip{
  display:inline-flex; align-items:center; height:26px; padding:0 12px;
  border-radius:999px; font-size:12px; letter-spacing:.08em;
  color:var(--primary); background:var(--glass);
  border:1px solid rgba(27,200,255,.24);
}
.chip-xs{ height:22px; padding:0 10px; font-size:11px; }
.chip-mint{ color:var(--mint); border-color:rgba(77,232,176,.28); }

/* 按钮 */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 24px; border-radius:var(--r-sm);
  font-size:15px; font-weight:700; white-space:nowrap;
  border:0; transition:transform .2s ease, filter .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease;
}
.btn-sm{ height:40px; padding:0 18px; font-size:14px; }
.btn-primary{
  background:linear-gradient(180deg,#2AD2FF,#0E9ADC); color:#04121C;
  box-shadow:0 10px 28px -8px rgba(27,200,255,.55), inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{ transform:translateY(-2px); filter:brightness(1.08); }
.btn-primary:active{ transform:translateY(0); }
.btn-ghost{
  background:var(--glass); color:var(--text);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(16px) saturate(140%); -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.btn-ghost:hover{ transform:translateY(-2px); border-color:rgba(27,200,255,.6); }
.btn-ghost:active{ transform:translateY(0); }
.link-arrow{
  display:inline-flex; align-items:center; gap:6px;
  font-size:14px; color:var(--primary); transition:transform .2s ease, color .2s ease;
}
.link-arrow:hover{ transform:translateX(3px); }

/* 玻璃与卡片 */
.glass{
  background:var(--glass); border:1px solid var(--line); border-radius:var(--r-lg);
  backdrop-filter:blur(16px) saturate(140%); -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:28px; box-shadow:var(--shadow-card);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{ transform:translateY(-4px); border-color:rgba(27,200,255,.22); box-shadow:var(--shadow-card), var(--shadow-hover); }
.card-media{
  border-radius:14px; overflow:hidden; margin-bottom:18px; background:var(--panel-2);
  aspect-ratio:16/9;
}
.card-media img{ width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
.card:hover .card-media img{ transform:scale(1.03); }
.card:hover .card-title{ color:var(--primary); }
.card-title{ transition:color .25s ease; }

/* Hero */
.hero{ padding-top:112px; padding-bottom:88px; }
.hero-grid{ display:grid; grid-template-columns:7fr 5fr; gap:44px; align-items:center; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:28px; }
.badges{ display:flex; flex-wrap:wrap; gap:22px; margin-top:30px; }
.badges li{ display:flex; align-items:center; gap:8px; font-size:13px; color:var(--text-2); }
.badges li::before{
  content:""; width:6px; height:6px; border-radius:999px; background:var(--mint);
  box-shadow:0 0 10px rgba(77,232,176,.8);
}
.hero-visual{
  position:relative; min-height:400px; border-radius:24px 8px 24px 8px; overflow:hidden;
  border:1px solid var(--line); background:var(--panel); box-shadow:var(--shadow-card);
}
.hero-visual img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.hero-visual::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(6,10,20,.10) 0%, rgba(6,10,20,.78) 100%);
}
.float-card{
  position:absolute; left:20px; bottom:20px; z-index:2; padding:16px 20px; border-radius:18px;
}
.float-label{ font-size:12px; color:var(--text-3); letter-spacing:.06em; }
.float-num{ font-size:28px; font-weight:800; line-height:1.3; color:#fff; }
.float-sub{ font-size:12px; color:var(--mint); }
.float-tag{ position:absolute; right:18px; top:18px; z-index:2; }

/* 板块标题行 */
.sec-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:40px; }
.sec-head p{ max-width:60ch; }

/* 三步 */
.steps{ position:relative; display:grid; grid-template-columns:repeat(3,1fr); gap:0; }
.step{ position:relative; padding:0 26px 0 0; }
.step + .step{ padding-left:30px; }
.step + .step::before{
  content:""; position:absolute; left:0; top:8px; bottom:8px; width:1px; background:var(--line);
}
.step-num{
  font-size:72px; font-weight:800; line-height:1; letter-spacing:-.03em;
  color:transparent; -webkit-text-stroke:1px rgba(27,200,255,.38);
}
.step-tag{
  display:inline-flex; align-items:center; height:20px; padding:0 8px; border-radius:6px;
  font-size:11px; letter-spacing:.06em; color:var(--amber);
  border:1px solid rgba(255,176,32,.35); margin-bottom:10px;
}

/* 案例 */
.case-card{
  display:grid; grid-template-columns:55fr 45fr; gap:0; overflow:hidden;
  background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.case-card:hover{ transform:translateY(-4px); border-color:rgba(27,200,255,.22); box-shadow:var(--shadow-card), var(--shadow-hover); }
.case-card.rev{ grid-template-columns:45fr 55fr; }
.case-card.rev .case-media{ order:2; }
.case-media{ min-height:320px; background:var(--panel-2); }
.case-media img{ width:100%; height:100%; object-fit:cover; }
.case-body{ padding:36px; display:flex; flex-direction:column; justify-content:center; }
.case-points{ margin-top:18px; display:flex; flex-direction:column; gap:10px; }
.case-points li{ position:relative; padding-left:18px; font-size:14px; color:var(--text-2); }
.case-points li::before{
  content:""; position:absolute; left:0; top:11px; width:6px; height:6px; border-radius:2px;
  background:var(--primary); box-shadow:0 0 10px rgba(27,200,255,.75);
}
.stats{
  display:grid; grid-template-columns:repeat(3,1fr); margin-top:32px;
  border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden;
  background:var(--glass);
}
.stat{ padding:26px 28px; }
.stat + .stat{ border-left:1px solid var(--line); }
.stat-num{ font-size:32px; font-weight:800; line-height:1.25; color:#fff; letter-spacing:-.02em; }
.stat-num span{ font-size:14px; font-weight:600; color:var(--primary); margin-left:4px; }
.stat-label{ font-size:13px; color:var(--text-3); margin-top:4px; }

/* FAQ */
.faq-grid{ display:grid; grid-template-columns:30fr 70fr; gap:48px; align-items:start; }
.faq-sticky{ position:sticky; top:96px; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item summary{
  list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:20px 0; font-size:17px; font-weight:600; color:var(--text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{
  content:"+"; color:var(--primary); font-size:20px; font-weight:600; line-height:1; flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-item[open] summary{ color:var(--primary); }
.faq-item[open] summary::after{ content:"−"; }
.faq-body{
  padding:0 16px 22px; margin-left:1px; border-left:3px solid var(--primary);
  font-size:15px; color:var(--text-2); animation:fadeIn .22s ease;
}
@keyframes fadeIn{ from{ opacity:0; transform:translateY(-4px);} to{ opacity:1; transform:none;} }

/* 开通 CTA + 表单 */
.apply-band{
  padding:36px; border-radius:var(--r-lg); display:flex; align-items:center; justify-content:space-between;
  gap:28px; flex-wrap:wrap;
}
.apply-actions{ display:flex; gap:12px; flex-wrap:wrap; }
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:28px; }
.form-full{ grid-column:1 / -1; }
.field-label{ display:block; font-size:13px; color:var(--text-3); margin-bottom:8px; letter-spacing:.04em; }
.field{
  width:100%; height:48px; padding:0 14px; border-radius:var(--r-sm);
  background:var(--panel-2); border:1px solid var(--line); color:var(--text);
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.field::placeholder{ color:var(--text-3); }
.field:focus{
  outline:none; background:#101B2E; border-color:rgba(27,200,255,.7);
  box-shadow:0 0 0 3px rgba(27,200,255,.18);
}
textarea.field{ height:auto; min-height:104px; padding:12px 14px; line-height:1.7; resize:vertical; }
.form-note{ font-size:13px; color:var(--text-3); margin-top:14px; }
.form-ok{
  display:none; margin-top:18px; padding:14px 18px; border-radius:var(--r-sm);
  font-size:14px; color:var(--mint); background:rgba(77,232,176,.08);
  border:1px solid rgba(77,232,176,.28);
}
.form-ok.show{ display:block; }

/* 最新信息 */
.news-list{ display:flex; flex-direction:column; }
.news-card{
  display:flex; gap:22px; padding:20px; border-radius:var(--r-md);
  border:1px solid transparent; border-bottom:1px solid var(--line);
  transition:background .22s ease, border-color .22s ease, transform .22s ease;
}
.news-card:last-child{ border-bottom-color:transparent; }
.news-card:hover{ background:var(--glass); border-color:rgba(27,200,255,.2); transform:translateX(3px); }
.news-thumb{
  width:200px; height:130px; flex:0 0 200px; object-fit:cover; border-radius:14px;
  background:var(--panel-2);
}
.news-body{ flex:1 1 auto; min-width:0; }
.news-meta{ display:flex; align-items:center; gap:12px; margin-bottom:8px; }
.news-time{ font-size:12px; color:var(--text-3); }
.news-title{ font-size:18px; font-weight:600; line-height:1.5; transition:color .2s ease; }
.news-card:hover .news-title{ color:var(--primary); }
.news-desc{
  font-size:14px; color:var(--text-2); margin-top:6px;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.news-more{ display:inline-block; margin-top:10px; font-size:13px; color:var(--primary); }
.empty-state{
  border:1px dashed rgba(255,255,255,.18); border-radius:var(--r-md);
  padding:52px 24px; text-align:center; background:var(--glass);
}
.empty-title{ font-size:15px; color:var(--text-2); margin-bottom:16px; }

/* 页脚 */
.site-footer{ border-top:1px solid var(--line); margin-top:24px; background:rgba(12,20,36,.6); }
.footer-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:36px; padding:64px 0 40px; }
.footer-title{ font-size:13px; letter-spacing:.1em; color:var(--text-3); margin-bottom:16px; }
.footer-links{ display:flex; flex-direction:column; gap:10px; }
.footer-links a{ font-size:14px; color:var(--text-2); transition:color .2s ease, transform .2s ease; }
.footer-links a:hover{ color:var(--primary); transform:translateX(2px); }
.footer-text{ font-size:14px; color:var(--text-2); line-height:1.85; max-width:38ch; }
.footer-bottom{
  border-top:1px solid var(--line); padding:22px 24px 34px;
  font-size:13px; color:var(--text-3); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
}

/* 响应式 */
@media (max-width:1279px) and (min-width:1024px){
  .page-shell{ padding-left:72px; }
  .sidebar{ width:72px; padding:0 12px 16px; align-items:center; }
  .brand-text{ display:none; }
  .nav-item{ justify-content:center; padding:0; }
  .nav-item:hover::before, .nav-item.active::before{ display:none; }
  .nav-label{
    position:absolute; left:62px; top:50%; transform:translateY(-50%) translateX(-4px);
    white-space:nowrap; padding:6px 12px; border-radius:10px; font-size:13px;
    background:#0E1728; border:1px solid var(--line); color:var(--text);
    opacity:0; pointer-events:none; transition:opacity .18s ease, transform .18s ease; z-index:5;
  }
  .nav-item:hover .nav-label{ opacity:1; transform:translateY(-50%) translateX(0); }
  .side-cta, .side-foot{ display:none; }
}
@media (max-width:1023px){
  .page-shell{ padding-left:0; }
  .sidebar{ display:none; }
  .topbar{ display:flex; }
  .hero{ padding-top:96px; }
  .section{ padding:64px 0; }
  .hero-grid{ grid-template-columns:1fr; gap:32px; }
  .hero-visual{ min-height:220px; }
  .steps{ grid-template-columns:1fr; gap:26px; }
  .step{ padding:0 0 0 0; }
  .step + .step{ padding-left:0; border-top:1px solid var(--line); padding-top:26px; }
  .step + .step::before{ display:none; }
  .case-card, .case-card.rev{ grid-template-columns:1fr; }
  .case-card.rev .case-media{ order:0; }
  .case-media{ min-height:220px; }
  .case-body{ padding:26px; }
  .faq-grid{ grid-template-columns:1fr; gap:24px; }
  .faq-sticky{ position:static; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:28px; padding:48px 0 32px; }
}
@media (max-width:767px){
  .container{ padding:0 18px; }
  .stats{ grid-template-columns:1fr; }
  .stat + .stat{ border-left:0; border-top:1px solid var(--line); }
  .form-grid{ grid-template-columns:1fr; }
  .apply-band{ padding:26px; }
  .news-card{ flex-direction:column; gap:14px; }
  .news-thumb{ width:100%; flex:0 0 auto; height:180px; }
  .sec-head{ flex-direction:column; align-items:flex-start; gap:12px; }
  .footer-grid{ grid-template-columns:1fr; }
  .footer-bottom{ flex-direction:column; }
}
@media (prefers-reduced-motion:reduce){
  *{ transition:none !important; animation:none !important; }
  html{ scroll-behavior:auto; }
}

/* roulang page: category1 */
:root{
  --bg:#060A14;
  --panel:#0C1424;
  --input-bg:#0E1728;
  --primary:#1BC8FF;
  --primary-deep:#0A7FB5;
  --violet:#6C4DFF;
  --mint:#4DE8B0;
  --amber:#FFB020;
  --text:#E6EFFB;
  --text-2:rgba(230,239,251,.64);
  --text-3:rgba(230,239,251,.42);
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.05);
  --r-xl:24px;
  --r-lg:20px;
  --r-sm:12px;
  --shadow:0 12px 30px -16px rgba(0,0,0,.7);
  --sidebar-w:240px;
}
@media (min-width:1440px){:root{--sidebar-w:260px;}}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
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(--primary);outline-offset:2px;border-radius:6px;}

/* 背景装饰 */
.bg-decor{position:fixed;inset:0;z-index:0;pointer-events:none;}
.bg-decor::before{
  content:"";position:absolute;width:540px;height:540px;left:-180px;top:-180px;
  background:radial-gradient(circle,rgba(27,200,255,.12) 0%,rgba(27,200,255,0) 66%);
}
.bg-decor::after{
  content:"";position:absolute;width:640px;height:640px;right:-220px;bottom:-240px;
  background:radial-gradient(circle,rgba(108,77,255,.10) 0%,rgba(108,77,255,0) 66%);
}
.bg-dots{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:8px 8px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),rgba(0,0,0,0) 70%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.5),rgba(0,0,0,0) 70%);
}

/* 侧栏 */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);z-index:60;
  display:flex;flex-direction:column;
  padding:0 14px 18px;
  background:rgba(9,15,28,.86);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-right:1px solid var(--line);
  transition:width .28s ease,transform .3s ease;
}
.brand{display:flex;align-items:center;gap:10px;height:72px;padding:0 8px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:18px;font-weight:800;line-height:1;
  color:var(--primary);background:rgba(27,200,255,.10);
  border:1px solid rgba(27,200,255,.35);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.04),0 0 20px -8px rgba(27,200,255,.7);
}
.brand-text strong{display:block;font-size:15px;font-weight:700;letter-spacing:.01em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.14em;}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:12px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:14px;white-space:nowrap;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:20px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(27,200,255,.85);
  transform:translateY(-50%) scaleY(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-item:hover{background:var(--glass);color:var(--text);}
.nav-item:hover::before{transform:translateY(-50%) scaleY(1);}
.nav-item.active{
  background:var(--glass);color:var(--primary);
  border-color:rgba(27,200,255,.22);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.nav-item.active::before{transform:translateY(-50%) scaleY(1);}
.nav-ico{width:18px;height:18px;flex:0 0 18px;}
.nav-label{overflow:hidden;text-overflow:ellipsis;}
.side-cta{
  margin-top:14px;padding:16px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.side-cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:12px;}
.side-cta .btn{width:100%;height:42px;font-size:14px;}
.side-note{margin-top:12px;font-size:11px;line-height:1.6;color:var(--text-3);padding:0 4px;}

/* 顶栏与抽屉（移动端） */
.topbar{display:none;}
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(6,10,20,.7);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* 主内容 */
.app-main{position:relative;z-index:1;margin-left:var(--sidebar-w);padding:28px 32px 0;}
.container{width:100%;max-width:1200px;margin:0 auto;}

/* 通用 */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;letter-spacing:.08em;
  color:var(--primary);background:var(--glass);
  border:1px solid rgba(27,200,255,.24);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s ease,filter .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{
  background:linear-gradient(180deg,#2AD2FF,#0E9ADC);color:#04121C;
  box-shadow:0 10px 28px -8px rgba(27,200,255,.55),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:var(--glass);border-color:rgba(255,255,255,.14);color:var(--text);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.section{padding:96px 0;}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{font-size:32px;line-height:1.25;font-weight:700;margin:16px 0 12px;letter-spacing:-.01em;}
.sec-head p{color:var(--text-2);font-size:16px;}
.sec-title-min{font-size:20px;font-weight:600;letter-spacing:.01em;}

.card{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--r-xl);padding:28px;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{
  transform:translateY(-4px);border-color:rgba(27,200,255,.28);
  box-shadow:0 0 0 1px rgba(27,200,255,.28),0 20px 44px -20px rgba(27,200,255,.35);
}
.card h3{font-size:21px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:15px;}
.card-img{border-radius:14px;overflow:hidden;margin-top:20px;background:var(--panel);}
.card-img img{width:100%;height:190px;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-img img{transform:scale(1.03);}
.card:hover h3{color:var(--primary);}

/* Hero 窄幅条 */
.hero-bar{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  border:1px solid var(--line);
  padding:46px 42px;
  background-image:linear-gradient(96deg,rgba(6,10,20,.95) 0%,rgba(6,10,20,.82) 52%,rgba(6,10,20,.52) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:var(--text-3);}
.hero-bar h1{
  font-size:clamp(28px,3.6vw,50px);line-height:1.15;font-weight:800;letter-spacing:-.01em;
  margin:18px 0 16px;max-width:19em;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:44em;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line);}
.hero-badges span{font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px;}
.hero-badges span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(77,232,176,.8);}

/* 编号卡片组合网格 */
.mix-row{display:grid;gap:24px;margin-top:24px;}
.mix-row.a{grid-template-columns:1.55fr 1fr;}
.mix-row.b{grid-template-columns:1fr 1.55fr;}
.num-card{position:relative;display:flex;flex-direction:column;}
.num{
  display:block;font-size:72px;line-height:1;font-weight:800;letter-spacing:-.02em;
  color:rgba(27,200,255,.14);
  -webkit-text-stroke:1.5px rgba(27,200,255,.45);
  margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.num-card .tag-min{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:11px;letter-spacing:.08em;color:var(--amber);
  background:rgba(255,176,32,.10);border:1px solid rgba(255,176,32,.28);
  margin-bottom:12px;width:fit-content;
}
.mini-list{margin-top:16px;display:flex;flex-direction:column;}
.mini-list li{
  font-size:14px;color:var(--text-2);padding:9px 0;border-top:1px solid var(--line);
  display:flex;gap:10px;align-items:flex-start;
}
.mini-list li::before{content:"—";color:var(--primary);flex:0 0 auto;}

/* 资料清单面板 */
.panel-block{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:38px;box-shadow:var(--shadow);
}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 26px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--primary);background:var(--glass);border:1px solid rgba(27,200,255,.22);
}
.check-list{display:flex;flex-direction:column;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}
.check-list li:first-child{border-top:0;}
.check-list li b{color:var(--text);font-weight:600;}
.tick{
  flex:0 0 20px;width:20px;height:20px;border-radius:50%;margin-top:5px;
  display:grid;place-items:center;font-size:11px;font-weight:700;color:#04121C;
  background:linear-gradient(180deg,#63F0C2,#2FC78E);
}
.figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--panel);}
.figure img{width:100%;height:300px;object-fit:cover;}

/* 流程轨 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;}
.flow-grid::before{
  content:"";position:absolute;left:12px;right:12px;top:36px;height:1px;background:var(--line);
}
.flow-item{position:relative;padding-top:74px;}
.flow-index{
  position:absolute;top:8px;left:0;width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;font-size:16px;font-weight:700;
  color:var(--amber);background:var(--panel);border:1px solid rgba(255,176,32,.3);
  font-variant-numeric:tabular-nums;z-index:1;
}
.flow-item h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.flow-item p{font-size:14px;color:var(--text-2);}

/* 数据条 */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-xl);
  overflow:hidden;
}
.stat-cell{padding:30px 26px;border-left:1px solid var(--line);}
.stat-cell:first-child{border-left:0;}
.stat-num{font-size:34px;font-weight:800;line-height:1.1;color:var(--primary);letter-spacing:-.01em;font-variant-numeric:tabular-nums;}
.stat-label{font-size:13px;color:var(--text-3);margin-top:8px;letter-spacing:.06em;}
.stat-desc{font-size:14px;color:var(--text-2);margin-top:10px;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:.75fr 1.6fr;gap:44px;align-items:start;}
.faq-side{position:sticky;top:40px;}
.faq-side h2{font-size:30px;line-height:1.25;font-weight:700;margin:16px 0 12px;}
.faq-side p{color:var(--text-2);font-size:15px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:17px;font-weight:600;line-height:1.6;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-sign{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;margin-top:3px;
  display:grid;place-items:center;font-size:15px;font-weight:700;line-height:1;
  color:var(--primary);background:var(--glass);border:1px solid rgba(27,200,255,.24);
  transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] .faq-sign{transform:rotate(180deg);}
.faq-answer{
  position:relative;padding:0 0 24px 16px;margin-left:1px;
  font-size:15px;color:var(--text-2);
  animation:fadeIn .2s ease;
}
.faq-answer::before{
  content:"";position:absolute;left:0;top:6px;bottom:26px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(27,200,255,.6);
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* CTA 表单 */
.cta-block{
  border-radius:var(--r-xl);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  padding:40px;box-shadow:var(--shadow);
}
.cta-top{display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;padding-bottom:28px;border-bottom:1px solid var(--line);}
.cta-top h2{font-size:28px;font-weight:700;line-height:1.3;}
.cta-top p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:44em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 22px;margin-top:28px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.04em;}
.input,.textarea{
  width:100%;background:var(--input-bg);border:1px solid var(--line);
  border-radius:var(--r-sm);height:46px;padding:0 14px;font-size:15px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.input::placeholder,.textarea::placeholder{color:var(--text-3);}
.input:focus,.textarea:focus{
  outline:none;border-color:var(--primary);background:#101B30;
  box-shadow:0 0 0 3px rgba(27,200,255,.18);
}
.form-foot{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:26px;}
.form-note{font-size:13px;color:var(--text-3);}

/* 页脚 */
.site-footer{
  margin-top:96px;border-top:1px solid var(--line);
  background:var(--panel);position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px;padding:58px 0 42px;}
.footer-title{font-size:13px;letter-spacing:.1em;color:var(--text-3);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .2s ease,transform .2s ease;width:fit-content;}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-text{font-size:14px;color:var(--text-2);line-height:1.8;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:72px;}
  .side-nav{margin-top:12px;}
  .nav-label{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item::before{left:-1px;}
  .side-cta,.side-note{display:none;}
  .brand{padding:0;justify-content:center;}
  .brand-text{display:none;}
  .sidebar:hover{width:240px;box-shadow:24px 0 60px -30px rgba(0,0,0,.9);}
  .sidebar:hover .nav-label{display:inline;}
  .sidebar:hover .nav-item{justify-content:flex-start;padding:0 12px;}
  .sidebar:hover .side-cta,.sidebar:hover .side-note{display:block;}
  .sidebar:hover .brand{padding:0 8px;justify-content:flex-start;}
  .sidebar:hover .brand-text{display:block;}
}
@media (max-width:1279px){
  .sec-head h2{font-size:28px;}
  .faq-side h2{font-size:26px;}
}
@media (max-width:1023px){
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:rgba(9,15,28,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
  }
  .topbar .brand{height:auto;padding:0;}
  .menu-btn{
    width:42px;height:42px;border-radius:12px;display:grid;place-items:center;cursor:pointer;
    background:var(--glass);border:1px solid var(--line);color:var(--text);
  }
  .menu-btn:hover{border-color:rgba(27,200,255,.4);color:var(--primary);}
  .sidebar{width:280px;transform:translateX(-100%);z-index:80;padding-top:8px;}
  .sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;padding:76px 18px 0;}
  .section{padding:60px 0;}
  .hero-bar{padding:30px 22px;}
  .hero-badges{gap:10px 18px;}
  .mix-row.a,.mix-row.b{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:26px;}
  .flow-grid{grid-template-columns:1fr 1fr;gap:26px 20px;}
  .flow-grid::before{display:none;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat-cell{border-left:1px solid var(--line);border-top:1px solid var(--line);}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-top:0;}
  .stat-cell:nth-child(odd){border-left:0;}
  .faq-wrap{grid-template-columns:1fr;gap:26px;}
  .faq-side{position:static;}
  .cta-block{padding:26px 22px;}
  .panel-block{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px;}
}
@media (max-width:639px){
  body{font-size:15px;}
  .hero-bar h1{font-size:28px;}
  .sec-head h2{font-size:24px;}
  .cta-top h2{font-size:23px;}
  .flow-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;}
  .stat-cell{border-left:0;border-top:1px solid var(--line);}
  .stat-cell:first-child{border-top:0;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .num{font-size:56px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .figure img{height:200px;}
}
@media (hover:none){
  .card:hover{transform:none;}
  .btn-primary:hover{transform:none;filter:none;}
  .nav-item:hover{background:transparent;}
  .footer-links a:hover{transform:none;}
}

/* roulang page: article */
:root{
  --bg:#060A14;
  --panel:#0C1424;
  --panel-2:#0E1728;
  --primary:#1BC8FF;
  --primary-deep:#0A7FB5;
  --accent:#6C4DFF;
  --mint:#4DE8B0;
  --amber:#FFB020;
  --text:#E6EFFB;
  --text-2:rgba(230,239,251,.64);
  --text-3:rgba(230,239,251,.42);
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.05);
  --r-sm:12px;
  --r-md:20px;
  --r-lg:24px;
  --shadow-card:0 12px 30px -16px rgba(0,0,0,.7);
  --shadow-hover:0 0 0 1px rgba(27,200,255,.28), 0 20px 44px -20px rgba(27,200,255,.35);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
p{margin:0;}
h1,h2,h3,h4{margin:0;font-weight:700;}
::selection{background:rgba(27,200,255,.28);}

/* ---------- 背景装饰 ---------- */
.bg-deco{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.bg-deco::before{content:"";position:absolute;width:640px;height:640px;left:-200px;top:-220px;background:radial-gradient(circle,rgba(27,200,255,.12),transparent 68%);}
.bg-deco::after{content:"";position:absolute;width:760px;height:760px;right:-260px;bottom:-320px;background:radial-gradient(circle,rgba(108,77,255,.11),transparent 68%);}
.bg-grid{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);background-size:8px 8px;opacity:.3;-webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 72%);mask-image:linear-gradient(180deg,#000 0%,transparent 72%);}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.main{position:relative;z-index:1;margin-left:var(--sidebar-w);padding-bottom:0;min-height:100vh;display:flex;flex-direction:column;}

/* ---------- 侧栏 ---------- */
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);z-index:40;background:rgba(9,14,26,.9);backdrop-filter:blur(14px) saturate(140%);border-right:1px solid var(--line);}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:20px 16px 24px;overflow-y:auto;}
.brand{display:flex;align-items:center;gap:12px;height:56px;padding:0 6px;margin-bottom:22px;border-radius:var(--r-sm);transition:.2s;}
.brand:hover{background:var(--glass);}
.brand-mark{flex:0 0 38px;width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:var(--glass);border:1px solid rgba(27,200,255,.42);color:var(--primary);font-weight:800;font-size:19px;letter-spacing:-.02em;box-shadow:inset 0 0 18px -6px rgba(27,200,255,.6);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{position:relative;display:flex;align-items:center;gap:12px;height:46px;padding:0 12px;border-radius:var(--r-sm);color:var(--text-2);font-size:14px;transition:background .18s,color .18s;}
.nav-item::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:0;border-radius:0 3px 3px 0;background:var(--primary);box-shadow:0 0 12px rgba(27,200,255,.8);transition:height .2s;}
.nav-item:hover{background:var(--glass);color:var(--text);}
.nav-item:hover::before{height:20px;}
.nav-item.active{background:var(--glass);color:var(--primary);}
.nav-item.active::before{height:24px;}
.nav-ico{flex:0 0 20px;width:20px;height:20px;}
.nav-label{white-space:nowrap;}
.side-cta{margin-top:auto;padding:18px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);}
.side-cta-title{font-size:14px;font-weight:700;margin-bottom:6px;}
.side-cta-text{font-size:12px;line-height:1.7;color:var(--text-3);margin-bottom:14px;}
.side-cta-note{margin-top:12px;font-size:11px;line-height:1.6;color:var(--text-3);}

/* ---------- 顶栏与抽屉 ---------- */
.topbar{display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:50;align-items:center;justify-content:space-between;padding:0 16px;background:rgba(9,14,26,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.brand-sm{margin:0;height:44px;padding:0;}
.menu-btn{width:42px;height:42px;display:grid;place-items:center;border-radius:var(--r-sm);background:var(--glass);border:1px solid var(--line);color:var(--text);cursor:pointer;}
.menu-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:280px;z-index:60;background:#0A111F;border-left:1px solid var(--line);transform:translateX(100%);transition:transform .3s ease;padding:20px 16px;overflow-y:auto;}
.drawer.open{transform:translateX(0);}
.drawer .brand{margin-bottom:18px;}
.drawer-mask{position:fixed;inset:0;z-index:55;background:rgba(6,10,20,.7);backdrop-filter:blur(6px);opacity:0;pointer-events:none;transition:opacity .3s;}
.drawer-mask.open{opacity:1;pointer-events:auto;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--r-sm);padding:13px 24px;font-size:15px;font-weight:700;cursor:pointer;transition:transform .2s,filter .2s,border-color .2s,color .2s,box-shadow .2s;}
.btn-primary{background:linear-gradient(180deg,#2AD2FF,#0E9ADC);color:#04121C;box-shadow:0 10px 28px -8px rgba(27,200,255,.55),inset 0 1px 0 rgba(255,255,255,.25);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--glass);border-color:rgba(255,255,255,.14);color:var(--text);backdrop-filter:blur(16px) saturate(140%);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ---------- chip / 标签 ---------- */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;font-size:12px;letter-spacing:.08em;background:var(--glass);border:1px solid var(--line);color:var(--primary);}
.chip-mint{color:var(--mint);border-color:rgba(77,232,176,.28);}
.chip-amber{color:var(--amber);border-color:rgba(255,176,32,.28);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:28px 0 0;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);transition:color .18s;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(230,239,251,.24);}
.breadcrumb .current{color:var(--text-2);}

/* ---------- 文章头部 ---------- */
.article-head{padding:26px 0 0;}
.article-title{font-size:clamp(28px,4vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.01em;margin:16px 0 18px;max-width:22ch;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--text-3);margin-bottom:28px;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(230,239,251,.24);}
.cover{margin:0 0 40px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:var(--panel);}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cover:hover img{transform:scale(1.03);}

/* ---------- 正文 + 目录 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;padding-bottom:8px;}
.article-body-wrap{min-width:0;}
.article-body{max-width:76ch;margin:0 auto;font-size:16px;line-height:1.85;color:rgba(230,239,251,.86);}
.article-body p{margin:0 0 1em;}
.article-body h2{font-size:26px;line-height:1.4;font-weight:700;color:var(--text);margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--primary);scroll-margin-top:28px;}
.article-body h3{font-size:20px;font-weight:600;color:var(--text);margin:30px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1em;padding-left:22px;}
.article-body li{margin:6px 0;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{color:var(--text);font-weight:700;}
.article-body img{border-radius:var(--r-sm);margin:16px 0;}
.article-body blockquote{margin:22px 0;padding:16px 20px;border-left:3px solid var(--primary-deep);background:rgba(27,200,255,.06);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2);}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:rgba(255,255,255,.04);color:var(--text);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0;}
.article-foot{max-width:76ch;margin:44px auto 0;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;}
.article-foot p{font-size:13px;color:var(--text-3);}
.toc-side{display:none;}
.toc-inner{position:sticky;top:32px;padding:22px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-card);}
.toc-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px;text-transform:uppercase;}
.toc-link{display:block;padding:8px 0 8px 12px;font-size:14px;color:var(--text-2);border-left:2px solid transparent;line-height:1.6;transition:color .18s,border-color .18s,background .18s;}
.toc-link:hover{color:var(--primary);border-left-color:var(--primary);background:rgba(27,200,255,.05);}
.toc-empty{font-size:13px;color:var(--text-3);line-height:1.7;}
.toc-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.7;}
.toc-note a{color:var(--primary);}

/* ---------- 空态 ---------- */
.empty-state{border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.03);border-radius:var(--r-md);padding:56px 24px;text-align:center;max-width:76ch;margin:0 auto;}
.empty-title{font-size:20px;font-weight:700;margin-bottom:10px;}
.empty-text{font-size:14px;color:var(--text-3);margin-bottom:22px;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-line{border-top:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px;}
.section-title{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-sub{font-size:14px;color:var(--text-3);margin-top:10px;max-width:62ch;}

/* ---------- 相关推荐 ---------- */
.rel-list{display:grid;gap:16px;}
.rel-card{display:flex;align-items:center;gap:20px;padding:16px;border-radius:var(--r-md);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-card);transition:transform .22s,box-shadow .22s,border-color .22s;}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(27,200,255,.28);box-shadow:var(--shadow-hover);}
.rel-thumb{flex:0 0 200px;width:200px;height:130px;border-radius:14px;overflow:hidden;background:var(--panel-2);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-body{min-width:0;display:flex;flex-direction:column;gap:8px;}
.rel-title{font-size:17px;font-weight:700;line-height:1.45;transition:color .2s;}
.rel-card:hover .rel-title{color:var(--primary);}
.rel-desc{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{font-size:12px;color:var(--text-3);letter-spacing:.04em;}
.rel-arrow{margin-left:auto;color:var(--text-3);font-size:18px;transition:transform .2s,color .2s;}
.rel-card:hover .rel-arrow{color:var(--primary);transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:28px;}
.faq-side h2{font-size:clamp(22px,3vw,28px);line-height:1.32;}
.faq-side p{margin-top:14px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:34ch;}
.faq-list{display:grid;gap:0;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:16px;background:none;border:none;color:var(--text);text-align:left;font-size:17px;font-weight:600;padding:22px 0;cursor:pointer;transition:color .2s;}
.faq-q:hover{color:var(--primary);}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.faq-icon{flex:0 0 26px;width:26px;height:26px;display:grid;place-items:center;border-radius:8px;background:var(--glass);border:1px solid var(--line);color:var(--primary);font-size:16px;line-height:1;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;border-left:3px solid transparent;}
.faq-item.open .faq-a{max-height:420px;border-left-color:var(--primary);}
.faq-a p{padding:0 0 22px 16px;font-size:15px;color:var(--text-2);line-height:1.85;opacity:0;transition:opacity .2s ease .05s;}
.faq-item.open .faq-a p{opacity:1;}

/* ---------- CTA ---------- */
.cta-band{border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-card);padding:40px;display:grid;grid-template-columns:1fr;gap:32px;}
.cta-copy h2{font-size:clamp(22px,3vw,30px);line-height:1.3;}
.cta-copy p{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.form-grid{display:grid;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em;}
.field input,.field select,.field textarea{width:100%;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 14px;color:var(--text);font-size:15px;transition:border-color .2s,box-shadow .2s,background .2s;}
.field textarea{min-height:96px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:rgba(230,239,251,.32);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);background:#101B2E;box-shadow:0 0 0 3px rgba(27,200,255,.18);}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:13px;color:var(--text-3);}
.trust-row span{display:inline-flex;align-items:center;gap:8px;}
.trust-dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(77,232,176,.8);}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:auto;border-top:1px solid var(--line);background:rgba(9,14,26,.7);backdrop-filter:blur(12px);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:56px 24px 40px;}
.footer-title{font-size:13px;letter-spacing:.1em;color:var(--text-3);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s,transform .18s;display:inline-block;}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-text{font-size:13px;color:var(--text-3);line-height:1.8;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:20px 24px 28px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--sidebar-w:260px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 264px;}
  .toc-side{display:block;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:60px;}
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .section-tight{padding:48px 0;}
  .breadcrumb{padding-top:20px;}
  .article-title{max-width:none;}
  .cta-band{padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 20px 32px;}
}
@media (min-width:1024px) and (max-width:1279px){
  .brand-text,.side-cta{display:none;}
  .brand{justify-content:center;padding:0;height:52px;}
  .nav-item{justify-content:center;padding:0;}
  .nav-label{position:absolute;left:58px;top:50%;transform:translateY(-50%);background:#0C1424;border:1px solid var(--line);border-radius:10px;padding:6px 12px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .18s;white-space:nowrap;z-index:45;box-shadow:var(--shadow-card);}
  .nav-item:hover .nav-label{opacity:1;}
}
@media (max-width:767px){
  .article-title{font-size:27px;}
  .cover{border-radius:var(--r-sm);margin-bottom:30px;}
  .article-body h2{font-size:22px;margin:34px 0 14px;}
  .article-body h3{font-size:18px;}
  .rel-card{flex-direction:column;align-items:flex-start;gap:14px;}
  .rel-thumb{flex:none;width:100%;height:170px;}
  .footer-grid{grid-template-columns:1fr;}
  .trust-row{gap:14px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .article-foot{flex-direction:column;align-items:flex-start;}
}
@media (hover:none){
  .rel-card:hover{transform:none;}
  .btn-primary:hover{transform:none;filter:none;}
  .nav-item:hover::before{height:0;}
}

/* roulang page: category2 */
:root{
  --bg:#060A14;
  --panel:#0C1424;
  --panel-2:#0E1728;
  --primary:#1BC8FF;
  --primary-deep:#0A7FB5;
  --accent:#6C4DFF;
  --mint:#4DE8B0;
  --amber:#FFB020;
  --text:#E6EFFB;
  --text-2:rgba(230,239,251,.64);
  --text-3:rgba(230,239,251,.42);
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.05);
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:24px;
  --shadow:0 12px 30px -16px rgba(0,0,0,.7);
  --shadow-hi:0 20px 44px -20px rgba(27,200,255,.35);
  --sidebar:240px;
  --sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 480px at 6% -6%, rgba(27,200,255,.12), transparent 68%),
    radial-gradient(720px 520px at 104% 96%, rgba(108,77,255,.12), transparent 70%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:radial-gradient(rgba(230,239,251,.10) 1px, transparent 1px);
  background-size:8px 8px;
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 62%);
  mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 62%);
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font-family:inherit;font-size: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(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  z-index:60;
  display:flex;
  flex-direction:column;
  padding:18px 16px 22px;
  background:linear-gradient(180deg, rgba(12,20,36,.94), rgba(6,10,20,.94));
  border-right:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  transition:transform .3s ease;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  height:72px;
  padding:0 8px;
  margin-bottom:10px;
}
.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  font-size:19px;
  font-weight:800;
  color:var(--primary);
  background:var(--glass);
  border:1px solid rgba(27,200,255,.42);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 8px 20px -12px rgba(27,200,255,.7);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.08em}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:var(--r-sm);
  font-size:14px;
  color:var(--text-2);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-ico{width:18px;height:18px;flex:0 0 auto}
.nav-item:hover{background:var(--glass);color:var(--text)}
.nav-item:hover::before{
  content:"";
  position:absolute;left:0;top:22%;height:56%;width:3px;border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(27,200,255,.75);
}
.nav-item.active{
  background:var(--glass);
  color:var(--primary);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.nav-item.active::before{
  content:"";
  position:absolute;left:0;top:22%;height:56%;width:3px;border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(27,200,255,.75);
}
.nav-cta-card{
  margin-top:auto;
  padding:16px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
}
.nav-cta-card p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:12px}
.nav-foot{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
  line-height:1.7;
}
.main{margin-left:var(--sidebar);position:relative;z-index:1;min-height:100vh}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  z-index:70;
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  background:rgba(6,10,20,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
}
.topbar .brand{height:auto;padding:0;margin:0}
.burger{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.overlay{
  display:none;
  position:fixed;inset:0;z-index:55;
  background:rgba(6,10,20,.7);
  backdrop-filter:blur(6px);
}
.overlay.show{display:block}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,border-color .18s ease,background .18s ease;
}
.btn-primary{
  background:linear-gradient(180deg,#2AD2FF,#0E9ADC);
  color:#04121C;
  box-shadow:0 10px 28px -8px rgba(27,200,255,.55), inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:var(--glass);
  border-color:rgba(255,255,255,.14);
  color:var(--text);
  backdrop-filter:blur(16px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(27,200,255,.6);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--primary);
  background:var(--glass);
  border:1px solid rgba(27,200,255,.28);
  white-space:nowrap;
}
.chip-mint{color:var(--mint);border-color:rgba(77,232,176,.32)}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;
  color:var(--text-2);
}
.badge i{
  width:6px;height:6px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 10px rgba(77,232,176,.9);
  font-style:normal;
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;
  padding:26px 0 6px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a:hover{color:var(--primary)}
.crumb span{color:var(--text-2)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin-top:16px;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  overflow:hidden;
  background:var(--panel) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  box-shadow:var(--shadow);
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(6,10,20,.97) 0%, rgba(6,10,20,.86) 54%, rgba(6,10,20,.55) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:44px;
  align-items:center;
  padding:56px 48px;
}
.hero h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.01em;
  margin:18px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:34em;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:20px}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  height:290px;
  object-fit:cover;
  border-radius:24px 24px 8px 24px;
  border:1px solid var(--line);
  box-shadow:0 24px 50px -26px rgba(0,0,0,.85);
}
.float-card{
  position:absolute;
  left:-16px;bottom:-20px;
  width:234px;
  padding:16px 18px;
  border-radius:var(--r-md);
  background:rgba(12,20,36,.86);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow);
}
.float-card .fc-label{font-size:12px;color:var(--text-3);letter-spacing:.08em}
.float-card .fc-num{font-size:26px;font-weight:800;color:var(--primary);line-height:1.3}
.float-card .fc-note{font-size:12px;color:var(--text-2)}

/* ---------- 数据条 ---------- */
.stat-band{
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.stat-cell{
  padding:26px 24px;
  border-left:1px solid var(--line);
}
.stat-cell:first-child{border-left:0}
.stat-cell .num{font-size:26px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.stat-cell .num small{font-size:14px;font-weight:600;color:var(--primary);margin-left:4px}
.stat-cell .txt{font-size:13.5px;color:var(--text-3);margin-top:4px}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0 0}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  margin:14px 0 12px;
}
.sec-head p{color:var(--text-2);font-size:15.5px}

/* ---------- 目录 + 条目流 ---------- */
.doc-layout{
  display:grid;
  grid-template-columns:224px 1fr;
  gap:52px;
  align-items:start;
}
.toc{
  position:sticky;
  top:32px;
  padding:22px 18px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  transition:background .18s ease,color .18s ease,padding-left .18s ease;
}
.toc-list a i{
  width:5px;height:5px;border-radius:50%;
  background:var(--text-3);
  font-style:normal;
  flex:0 0 auto;
}
.toc-list a:hover{background:rgba(255,255,255,.06);color:var(--primary);padding-left:14px}
.toc-list a:hover i{background:var(--primary);box-shadow:0 0 8px rgba(27,200,255,.9)}
.toc-hint{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.7;
}
.entry-list{border-top:1px solid var(--line)}
.entry{
  padding:34px 0;
  border-bottom:1px solid var(--line);
  scroll-margin-top:24px;
}
.entry-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:14px}
.entry-no{
  flex:0 0 auto;
  font-size:30px;
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(27,200,255,.55);
  padding-top:4px;
  letter-spacing:-.02em;
}
.entry h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:8px}
.entry p{color:var(--text-2);font-size:15.5px;margin-bottom:12px}
.entry p:last-of-type{margin-bottom:0}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.entry-figure{
  margin-top:18px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
}
.entry-figure img{width:100%;height:220px;object-fit:cover;transition:transform .4s ease}
.entry-figure:hover img{transform:scale(1.03)}
.plain-list{margin-top:12px;display:flex;flex-direction:column}
.plain-list li{
  display:flex;gap:12px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--text-2);
}
.plain-list li:last-child{border-bottom:0}
.plain-list li b{color:var(--text);font-weight:600;min-width:96px;flex:0 0 auto}

/* ---------- 两栏说明 ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:28px;
  align-items:stretch;
}
.panel{
  padding:32px;
  border-radius:var(--r-xl);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.panel h3{font-size:21px;font-weight:600;margin-bottom:14px}
.panel p{color:var(--text-2);font-size:15.5px}
.panel-glass{
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
}
.check-list{margin-top:6px;display:flex;flex-direction:column}
.check-list li{
  display:flex;gap:12px;
  padding:13px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--text-2);
}
.check-list li:last-child{border-bottom:0}
.check-list li em{
  flex:0 0 auto;
  font-style:normal;
  color:var(--mint);
  font-weight:700;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;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;
  padding:22px 4px;
  background:none;border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  position:relative;
  transition:color .18s ease,padding-left .18s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q .sign{
  flex:0 0 auto;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:8px;
  background:var(--glass);
  border:1px solid var(--line);
  font-size:16px;
  color:var(--primary);
  line-height:1;
}
.faq-item.open .faq-q{color:var(--primary);padding-left:14px}
.faq-item.open .faq-q::before{
  content:"";
  position:absolute;left:0;top:20%;height:60%;width:3px;border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(27,200,255,.7);
}
.faq-a{
  display:none;
  padding:0 4px 24px 14px;
  color:var(--text-2);
  font-size:15.5px;
  animation:fadeIn .2s ease;
}
.faq-item.open .faq-a{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta{
  margin-top:96px;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow);
  padding:40px;
  scroll-margin-top:24px;
}
.cta-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding-bottom:30px;
  border-bottom:1px solid var(--line);
}
.cta-top h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;letter-spacing:-.01em;margin-bottom:8px}
.cta-top p{color:var(--text-2);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:30px;
}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--text-3);letter-spacing:.04em}
.field input,.field select,.field textarea{
  width:100%;
  padding:13px 14px;
  border-radius:var(--r-sm);
  background:var(--panel-2);
  border:1px solid var(--line);
  color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:rgba(27,200,255,.7);
  background:#101B2F;
  box-shadow:0 0 0 3px rgba(27,200,255,.16);
}
.field-full{grid-column:1 / -1}
.form-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:26px;
}
.form-note{font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:rgba(6,10,20,.6);
  padding-top:56px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-text{margin:0 0 8px;font-size:14.5px;color:var(--text-2);line-height:1.8}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:var(--text-2);transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:44px;
  padding:22px 28px 30px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--sidebar:260px}
}
@media (max-width:1279.98px) and (min-width:1024px){
  :root{--sidebar:72px}
  .sidebar{padding:18px 10px 22px}
  .brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-label{display:none}
  .nav-item:hover .nav-label{
    display:block;
    position:absolute;
    left:calc(var(--sidebar) - 6px);
    padding:8px 14px;
    border-radius:10px;
    background:#0C1424;
    border:1px solid var(--line);
    color:var(--text);
    white-space:nowrap;
    z-index:10;
    box-shadow:var(--shadow);
  }
  .nav-cta-card,.nav-foot{display:none}
}
@media (max-width:1023.98px){
  .topbar{display:flex}
  .sidebar{transform:translateX(-100%);width:280px;box-shadow:0 0 60px rgba(0,0,0,.6)}
  .sidebar.open{transform:none}
  .main{margin-left:0;padding-top:60px}
  .brand-text{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:40px 26px}
  .hero-media img{height:230px}
  .float-card{left:0;bottom:-18px}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(3){border-left:0}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line)}
  .doc-layout{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding-top:64px}
  .cta{margin-top:64px;padding:28px 22px}
  .site-footer{margin-top:64px}
  .cta-top{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .hero-inner{padding:32px 20px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .stat-band{grid-template-columns:1fr}
  .stat-cell{border-left:0!important;border-top:1px solid var(--line)}
  .stat-cell:first-child{border-top:0}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .entry-no{font-size:24px}
  .panel{padding:24px 20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (hover:none){
  .btn:hover{transform:none;filter:none}
  .entry-figure:hover img{transform:none}
  .footer-links a:hover{transform:none}
}