/* roulang page: index */
:root{
  --c-bg-0:#070C18;
  --c-bg-1:#0B1526;
  --c-bg-2:#05090F;
  --c-panel:rgba(19,32,54,.72);
  --c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);
  --c-line-2:rgba(255,255,255,.18);
  --c-primary:#1FB6A6;
  --c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;
  --c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;
  --c-ink-2:#A8B6CC;
  --c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sp-section:clamp(64px,8vw,112px);
  --r-card:18px;
  --r-lg:22px;
  --r-input:12px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);
  --sh-2:0 24px 60px rgba(2,7,18,.6);
  --tr:.25s cubic-bezier(.32,.72,0,1);
  --bs-primary:#1FB6A6;
  --bs-primary-rgb:31,182,166;
  --bs-body-bg:#070C18;
  --bs-body-color:#E9EFF8;
  --bs-border-color:rgba(255,255,255,.09);
  --bs-link-color:#2ED3C0;
  --bs-link-hover-color:#FFC46B;
  --bs-font-sans-serif:var(--font-sans);
  --bs-border-radius:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:
    radial-gradient(1100px 620px at 50% -12%, rgba(31,182,166,.10), transparent 62%),
    radial-gradient(900px 520px at 88% 8%, rgba(242,160,61,.07), transparent 60%),
    linear-gradient(180deg,var(--c-bg-0) 0%,var(--c-bg-2) 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%, #000 0%, rgba(0,0,0,.35) 55%, transparent 85%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, #000 0%, rgba(0,0,0,.35) 55%, transparent 85%);
}
img{max-width:100%;display:block}
a{color:var(--c-primary-2);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--c-accent-2)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:76px;display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:height var(--tr),background var(--tr),border-color var(--tr),backdrop-filter var(--tr);
}
.site-head.scrolled{
  height:64px;
  background:rgba(7,12,24,.76);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--c-line);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);text-decoration:none;flex-shrink:0}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;color:var(--c-primary-2)}
.brand-name{font-size:17px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.brand-name em{font-style:normal;color:var(--c-accent)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link-x{
  position:relative;display:inline-flex;align-items:center;
  font-size:14px;font-weight:500;color:var(--c-ink-2);
  padding:6px 0;text-decoration:none;white-space:nowrap;
  transition:color var(--tr);
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--c-primary-2);transition:width var(--tr);
}
.nav-link-x:hover{color:var(--c-ink)}
.nav-link-x:hover::after{width:100%}
.nav-link-x.active{color:var(--c-ink)}
.nav-link-x.active::after{width:0}
.nav-pill-dot{
  width:3px;height:3px;border-radius:50%;background:var(--c-accent);
  display:none;margin-right:8px;flex:0 0 3px;
}
.nav-link-x.active .nav-pill-dot{display:inline-block}
.head-right{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:999px;background:transparent;
  color:var(--c-ink-2);cursor:pointer;transition:all var(--tr);
}
.icon-btn:hover{color:var(--c-primary-2);border-color:rgba(46,211,192,.45)}
.menu-btn{display:none}
@media (max-width:991px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .head-cta{display:none}
}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.66);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,380px);
  background:rgba(11,21,38,.97);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-left:1px solid var(--c-line);
  transform:translateX(102%);transition:transform var(--tr);
  z-index:1050;display:flex;flex-direction:column;padding:24px 22px 28px;
  overflow-y:auto;
}
.drawer.open{transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--c-line)}
.drawer-links{display:flex;flex-direction:column;padding:8px 0 0}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  font-size:18px;font-weight:500;color:var(--c-ink);line-height:56px;
  border-bottom:1px solid var(--c-line);text-decoration:none;
}
.drawer-link .mono{font-size:12px;color:var(--c-ink-3)}
.drawer-link.active{color:var(--c-accent-2)}
.drawer-foot{margin-top:auto;padding-top:26px}

/* ---------- 按钮 ---------- */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;border:0;
  background:linear-gradient(135deg,var(--c-accent),var(--c-accent-2));
  color:#1A1206;font-size:14px;font-weight:600;
  box-shadow:0 8px 26px rgba(242,160,61,.28);
  cursor:pointer;transition:all var(--tr);text-decoration:none;
}
.btn-glow:hover{
  color:#1A1206;filter:brightness(1.08);
  box-shadow:0 12px 34px rgba(242,160,61,.44);transform:translateY(-1px);
}
.btn-glow:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;
  border:1px solid rgba(255,255,255,.2);background:transparent;
  color:var(--c-ink);font-size:14px;font-weight:500;
  cursor:pointer;transition:all var(--tr);text-decoration:none;
}
.btn-ghost:hover{color:var(--c-primary-2);border-color:rgba(46,211,192,.6);transform:translateY(-1px)}
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:linear-gradient(135deg,var(--c-accent),var(--c-accent-2));
  color:#1A1206;font-size:13px;font-weight:600;
  box-shadow:0 6px 20px rgba(242,160,61,.26);
  transition:all var(--tr);text-decoration:none;white-space:nowrap;
}
.btn-pill:hover{color:#1A1206;filter:brightness(1.08);box-shadow:0 10px 28px rgba(242,160,61,.4);transform:translateY(-1px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  color:var(--c-primary-2);text-decoration:none;
}
.link-arrow svg{transition:transform var(--tr)}
.link-arrow:hover{color:var(--c-accent-2)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;padding:150px 0 92px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(90deg,rgba(7,12,24,.97) 0%,rgba(7,12,24,.86) 44%,rgba(7,12,24,.52) 100%),
    linear-gradient(180deg,rgba(7,12,24,.9) 0%,rgba(7,12,24,.35) 46%,rgba(5,9,15,.98) 100%);
}
.hero-grid{
  position:absolute;inset:0;z-index:2;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:96px 96px;
  mask-image:linear-gradient(90deg,#000 0%,transparent 78%);
  -webkit-mask-image:linear-gradient(90deg,#000 0%,transparent 78%);
}
.hero-scale{
  position:absolute;left:0;right:0;bottom:0;height:1px;z-index:3;
  background:linear-gradient(90deg,rgba(242,160,61,.85) 0%,rgba(242,160,61,.16) 38%,transparent 78%);
}
.hero-scale::before{
  content:"";position:absolute;left:0;bottom:0;width:min(1200px,86%);
  height:14px;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.28) 0 1px,transparent 1px 32px);
  opacity:.7;
}
.hero-inner{
  position:relative;z-index:4;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;width:100%;
}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  color:var(--c-accent-2);
  border:1px solid rgba(242,160,61,.3);border-radius:999px;
  padding:6px 14px;background:rgba(242,160,61,.07);
  margin-bottom:26px;
}
.kicker .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 10px rgba(242,160,61,.9)}
.hero h1{
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.22;font-weight:700;letter-spacing:0;
  max-width:19ch;
  margin-bottom:22px;
}
.hero h1 span{
  background:linear-gradient(120deg,var(--c-primary-2),var(--c-accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--c-ink-2);max-width:34ch;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{
  display:flex;gap:0;flex-wrap:wrap;
  border-top:1px solid var(--c-line);padding-top:22px;
}
.hero-stats li{
  padding-right:34px;margin-right:34px;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:2px;
}
.hero-stats li:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stats b{font-family:var(--font-mono);font-size:26px;font-weight:600;color:var(--c-ink);line-height:1.2}
.hero-stats b i{font-style:normal;font-size:14px;color:var(--c-primary-2);margin-left:2px}
.hero-stats small{font-size:13px;color:var(--c-ink-3)}

/* HUD 玻璃卡 */
.hud{
  position:relative;
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.hud::before,.hud::after{
  content:"";position:absolute;width:16px;height:16px;border:1px solid rgba(242,160,61,.55);
}
.hud::before{top:-1px;left:-1px;border-right:0;border-bottom:0;border-top-left-radius:var(--r-lg)}
.hud::after{bottom:-1px;right:-1px;border-left:0;border-top:0;border-bottom-right-radius:var(--r-lg)}
.hud-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line);margin-bottom:22px}
.hud-head h3{font-size:16px;font-weight:600}
.hud-head .mono{font-size:12px;color:var(--c-ink-3)}
.hud-ring-row{display:flex;align-items:center;gap:22px;margin-bottom:22px}
.ring{
  position:relative;width:112px;height:112px;flex:0 0 112px;border-radius:50%;
  background:conic-gradient(var(--c-primary) 0 82%,rgba(255,255,255,.08) 82% 100%);
  display:grid;place-items:center;
  box-shadow:0 0 28px rgba(31,182,166,.22);
}
.ring::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  background:var(--c-panel-solid);border:1px solid var(--c-line);
}
.ring-num{position:relative;z-index:2;text-align:center}
.ring-num b{display:block;font-family:var(--font-mono);font-size:24px;font-weight:600;line-height:1.1}
.ring-num small{font-size:12px;color:var(--c-ink-3)}
.hud-ring-row p{font-size:14px;line-height:1.75;color:var(--c-ink-2);max-width:22ch}
.hud-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-top:1px dashed rgba(255,255,255,.09);
  font-size:13px;
}
.hud-list li:first-child{border-top:0}
.hud-list .route{color:var(--c-ink);font-weight:500}
.hud-list .route .mono{color:var(--c-ink-3);margin:0 6px}
.tag-ok{color:var(--c-primary-2);border:1px solid rgba(46,211,192,.35);border-radius:999px;padding:2px 10px;font-size:12px}
.tag-run{color:var(--c-accent-2);border:1px solid rgba(242,160,61,.35);border-radius:999px;padding:2px 10px;font-size:12px}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sp-section) 0;position:relative;z-index:1}
.sec-top{
  display:flex;align-items:center;gap:14px;
  border-top:1px solid var(--c-line);
  padding-top:20px;margin-bottom:14px;
}
.sec-no{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--c-accent)}
.sec-top .rule{flex:1;height:1px;background:linear-gradient(90deg,rgba(255,255,255,.14),transparent)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;margin-bottom:46px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(23px,2.6vw,34px);line-height:1.28;font-weight:700;margin-bottom:12px}
.sec-desc{font-size:15px;color:var(--c-ink-2);max-width:52ch}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid rgba(31,182,166,.35);border-radius:999px;
  font-size:12px;color:var(--c-primary-2);background:rgba(31,182,166,.08);
  letter-spacing:.02em;
}
.badge-accent{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid rgba(242,160,61,.4);border-radius:999px;
  font-size:12px;color:var(--c-accent-2);background:rgba(242,160,61,.09);
}

/* ---------- 流程轨道 ---------- */
.rail{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-line-2);
}
.rail-node{
  position:relative;padding:38px 30px 30px 0;
  border-right:1px solid var(--c-line);
  transition:background var(--tr);
}
.rail-node:last-child{border-right:0;padding-right:0}
.rail-node::before{
  content:"";position:absolute;top:-5px;left:0;
  width:9px;height:9px;border-radius:50%;
  background:var(--c-bg-0);border:2px solid var(--c-primary);
  transition:all var(--tr);
}
.rail-node:hover::before{background:var(--c-accent);border-color:var(--c-accent);box-shadow:0 0 0 6px rgba(242,160,61,.16)}
.rail-node .num{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--c-ink-3)}
.rail-node h3{font-size:20px;font-weight:600;line-height:1.4;margin:10px 0 10px}
.rail-node p{font-size:14px;line-height:1.8;color:var(--c-ink-2);max-width:26ch}

/* ---------- 图文 / 便当网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.bento-lg{grid-column:span 4}
.bento-sm{grid-column:span 2}
.bento-md{grid-column:span 2}
.card-b{
  position:relative;display:flex;flex-direction:column;
  background:rgba(17,28,49,.72);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
  height:100%;
  text-decoration:none;color:inherit;
}
.card-b:hover{transform:translateY(-4px);border-color:var(--c-line-2);box-shadow:var(--sh-1)}
.card-media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:#0A1424}
.card-media img{width:100%;height:100%;object-fit:cover;border-bottom:1px solid var(--c-line);transition:transform .45s cubic-bezier(.32,.72,0,1)}
.card-b:hover .card-media img{transform:scale(1.04)}
.card-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:34%;
  background:linear-gradient(180deg,transparent,rgba(7,12,24,.72));
}
.card-body-x{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body-x h3{font-size:19px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-lg .card-body-x h3{font-size:24px;line-height:1.4}
.card-lg{display:grid;grid-template-columns:1fr;grid-template-rows:auto auto}
.card-lg .card-media{aspect-ratio:16/7}
.card-body-x p{font-size:14px;line-height:1.8;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-lg .card-body-x p{-webkit-line-clamp:3}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3)}
.card-foot .mono{font-family:var(--font-mono);font-size:12px}
.card-points{display:flex;flex-wrap:wrap;gap:8px}
.card-points span{font-size:12px;color:var(--c-ink-2);border:1px solid var(--c-line);border-radius:999px;padding:2px 10px}

/* ---------- 进度 / 数据 ---------- */
.band{
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:34px 32px 30px;box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.07);
}
.band-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:8px}
.band-head h3{font-size:20px;font-weight:600}
.band-head .mono{font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3)}
.track{position:relative;height:6px;border-radius:999px;background:rgba(255,255,255,.08);margin:36px 0 14px}
.track-fill{
  position:absolute;left:0;top:0;bottom:0;width:0;
  border-radius:999px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2));
  box-shadow:0 0 18px rgba(46,211,192,.45);
  animation:fillIn 1.2s ease-out forwards;
}
@keyframes fillIn{to{width:68%}}
.pin{
  position:absolute;top:50%;width:11px;height:11px;border-radius:50%;
  transform:translate(-50%,-50%);
  background:var(--c-bg-0);border:2px solid rgba(255,255,255,.22);
}
.pin.on{background:var(--c-primary-2);border-color:var(--c-primary-2);box-shadow:0 0 12px rgba(46,211,192,.8)}
.pin.now{background:var(--c-accent);border-color:var(--c-accent);box-shadow:0 0 0 5px rgba(242,160,61,.18)}
.track-labels{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:12px;color:var(--c-ink-3)}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
.stat-card{
  background:rgba(9,17,31,.7);border:1px solid var(--c-line);border-radius:16px;
  padding:22px;transition:border-color var(--tr),transform var(--tr);
}
.stat-card:hover{border-color:var(--c-line-2);transform:translateY(-3px)}
.stat-card b{display:block;font-family:var(--font-mono);font-size:30px;font-weight:600;line-height:1.15;color:var(--c-ink)}
.stat-card b i{font-style:normal;font-size:14px;color:var(--c-primary-2);margin-left:3px}
.stat-card span{display:block;font-size:13px;color:var(--c-ink-2);margin-top:8px;padding-top:10px;border-top:1px solid var(--c-line)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.empty-card{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;text-align:center;
  background:var(--c-panel);border:1px solid var(--c-line);border-radius:var(--r-lg);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.empty-card svg{color:var(--c-primary-2);opacity:.85}
.empty-card p{font-size:15px;color:var(--c-ink-2)}
.empty-line{width:56px;height:1px;background:linear-gradient(90deg,transparent,var(--c-accent),transparent)}

/* ---------- 网络覆盖 ---------- */
.net-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud span{
  font-size:14px;color:var(--c-ink-2);
  border:1px solid var(--c-line);border-radius:999px;
  padding:8px 16px;background:rgba(17,28,49,.6);
  transition:all var(--tr);
}
.tag-cloud span:hover{color:var(--c-primary-2);border-color:rgba(46,211,192,.45);transform:translateY(-2px)}
.tag-cloud span.hot{color:var(--c-accent-2);border-color:rgba(242,160,61,.4)}
.voice-list{display:flex;flex-direction:column;gap:0}
.voice{
  padding:22px 0;border-top:1px solid var(--c-line);
}
.voice:first-child{border-top:0;padding-top:0}
.voice p{font-size:15px;line-height:1.85;color:var(--c-ink);margin-bottom:10px}
.voice span{font-family:var(--font-mono);font-size:12px;color:var(--c-ink-3)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--c-line)}
.accordion-item:last-child{border-bottom:1px solid var(--c-line)}
.accordion-button{
  position:relative;background:transparent;border:0;box-shadow:none;
  color:var(--c-ink);font-size:17px;font-weight:600;line-height:1.6;
  padding:24px 56px 24px 54px;transition:color var(--tr);
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-accent);transition:height var(--tr);
}
.accordion-button:not(.collapsed)::before{height:26px}
.accordion-button:not(.collapsed){color:var(--c-ink);background:transparent;box-shadow:none}
.accordion-button:hover{color:var(--c-primary-2)}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button::after{display:none}
.faq-no{
  position:absolute;left:18px;top:24px;
  font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3);
}
.acc-icon{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;color:var(--c-ink-3);transition:transform var(--tr),color var(--tr);
}
.accordion-button:not(.collapsed) .acc-icon{transform:translateY(-50%) rotate(180deg);color:var(--c-accent)}
.accordion-body{
  padding:0 56px 26px 54px;font-size:15px;line-height:1.85;color:var(--c-ink-2);
  max-width:46em;
}

/* ---------- CTA + 表单 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:clamp(30px,4vw,52px);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 260px at 8% 0%,rgba(242,160,61,.14),transparent 66%),
    radial-gradient(520px 240px at 96% 100%,rgba(31,182,166,.16),transparent 66%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cta-copy h2{font-size:clamp(23px,2.6vw,34px);line-height:1.28;font-weight:700;margin-bottom:16px}
.cta-copy p{font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:34ch;margin-bottom:24px}
.cta-marks{display:flex;flex-direction:column;gap:12px}
.cta-marks li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-ink-2)}
.cta-marks svg{color:var(--c-primary-2);flex:0 0 16px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--c-ink-2)}
.field input,.field select{
  height:46px;border-radius:var(--r-input);
  background:rgba(7,12,24,.72);
  border:1px solid var(--c-line);
  padding:0 14px;font-size:14px;color:var(--c-ink);
  transition:border-color var(--tr),box-shadow var(--tr);
  appearance:none;-webkit-appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23A8B6CC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
  padding-right:38px;
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--c-accent);
  box-shadow:0 0 0 4px rgba(242,160,61,.14);
}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:4px}
.form-tip{
  grid-column:1 / -1;font-size:14px;color:var(--c-primary-2);
  border-left:2px solid var(--c-primary);padding-left:12px;
  display:none;
}
.form-tip.show{display:block}
.form-note{font-size:13px;color:var(--c-ink-3)}

/* ---------- 页脚 ---------- */
.site-foot{margin-top:0;border-top:1px solid var(--c-line);padding:64px 0 28px;position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14px;line-height:1.85;color:var(--c-ink-2);max-width:32ch;margin-bottom:18px}
.foot-col h4{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:18px}
.foot-col ul{display:flex;flex-direction:column;gap:12px}
.foot-col a{font-size:14px;color:var(--c-ink-2);transition:color var(--tr),transform var(--tr);display:inline-block}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(2px)}
.foot-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-3);
}
.foot-bottom .mono{font-family:var(--font-mono);font-size:12px}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .shell{max-width:1320px}
}
@media (max-width:1199px){
  .nav-links{gap:24px}
}
@media (max-width:991px){
  .hero{min-height:72vh;padding:124px 0 72px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{max-width:none}
  .rail{grid-template-columns:1fr 1fr}
  .rail-node{padding:32px 24px 26px 0;border-right:0;border-bottom:1px solid var(--c-line)}
  .rail-node:nth-child(odd){padding-right:24px}
  .rail-node:nth-child(even){padding-left:24px}
  .rail-node:nth-child(3),.rail-node:nth-child(4){border-bottom:1px solid var(--c-line)}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-lg,.bento-sm,.bento-md{grid-column:span 2}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .net-grid{grid-template-columns:1fr;gap:34px}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:575px){
  .shell{padding:0 18px}
  .hero{padding:112px 0 60px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .hero-stats{flex-direction:column;gap:16px}
  .hero-stats li{border-right:0;padding-right:0;margin-right:0;flex-direction:row;align-items:baseline;gap:10px}
  .hud{padding:22px}
  .hud-ring-row{flex-direction:column;align-items:flex-start;gap:16px}
  .ring{width:96px;height:96px;flex:0 0 96px}
  .rail{grid-template-columns:1fr}
  .rail-node,.rail-node:nth-child(odd),.rail-node:nth-child(even){padding:28px 0 24px;border-bottom:1px solid var(--c-line)}
  .bento{grid-template-columns:1fr}
  .bento-lg,.bento-sm,.bento-md{grid-column:span 1}
  .card-lg .card-media{aspect-ratio:16/9}
  .news-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr}
  .band{padding:24px 20px}
  .band-head{flex-direction:column;align-items:flex-start}
  .form-grid{grid-template-columns:1fr}
  .form-actions .btn-glow{width:100%}
  .accordion-button{padding:20px 44px 20px 46px;font-size:16px}
  .accordion-body{padding:0 24px 22px 46px}
  .faq-no{left:14px}
  .foot-grid{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .track-fill{width:68%}
}

/* roulang page: category1 */
:root{
  --c-bg-0:#070C18;
  --c-bg-1:#0B1526;
  --c-bg-2:#05090F;
  --c-panel:rgba(19,32,54,.72);
  --c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);
  --c-line-2:rgba(255,255,255,.18);
  --c-primary:#1FB6A6;
  --c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;
  --c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;
  --c-ink-2:#A8B6CC;
  --c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --r-card:18px;
  --r-big:22px;
  --r-input:12px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);
  --sh-2:0 24px 60px rgba(2,7,18,.6);
  --sp-section:clamp(64px,8vw,112px);
  --shell:1200px;
  --ease:cubic-bezier(.32,.72,0,1);
  --bs-primary:#1FB6A6;
  --bs-body-bg:#070C18;
  --bs-body-color:#E9EFF8;
  --bs-border-color:rgba(255,255,255,.09);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background-color:var(--c-bg-0);
  background-image:
    radial-gradient(1100px 620px at 18% -10%,rgba(31,182,166,.16),transparent 62%),
    radial-gradient(900px 560px at 92% 4%,rgba(242,160,61,.10),transparent 60%),
    linear-gradient(180deg,#070C18 0%,#0B1526 52%,#05090F 100%);
  background-attachment:fixed;
  letter-spacing:0;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(1000px 700px at 50% 0%,#000 20%,transparent 88%);
  -webkit-mask-image:radial-gradient(1000px 700px at 50% 0%,#000 20%,transparent 88%);
}
img{max-width:100%;display:block}
a{color:var(--c-primary-2);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-accent-2)}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
main{position:relative;z-index:1}

/* ============ 导航 ============ */
.site-head{
  position:sticky;
  top:0;
  z-index:60;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  background:rgba(7,12,24,.62);
  border-bottom:1px solid var(--c-line);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-head.is-scrolled{background:rgba(7,12,24,.88)}
.head-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .25s var(--ease);
}
.site-head.is-scrolled .head-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:32px;height:32px;color:var(--c-primary);flex:0 0 auto}
.brand-name{font-size:17px;font-weight:700;letter-spacing:0;white-space:nowrap}
.brand-name em{font-style:normal;color:var(--c-accent);margin-left:2px}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link-x{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:500;
  color:var(--c-ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-x::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;
  height:1px;
  background:var(--c-primary-2);
  transition:width .25s var(--ease);
}
.nav-link-x:hover{color:var(--c-ink)}
.nav-link-x:hover::after{width:100%}
.nav-pill-dot{
  width:5px;height:5px;border-radius:50%;
  background:var(--c-accent);
  opacity:0;
  transition:opacity .25s var(--ease);
}
.nav-link-x.active{color:var(--c-ink)}
.nav-link-x.active .nav-pill-dot{opacity:1}
.head-right{display:flex;align-items:center;gap:12px;margin-left:12px}
.btn-pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.head-cta{
  background:linear-gradient(180deg,var(--c-accent-2),var(--c-accent));
  color:#1A1005;
  box-shadow:0 8px 24px rgba(242,160,61,.28);
}
.head-cta:hover{
  color:#1A1005;
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 12px 32px rgba(242,160,61,.4);
}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.02);
  color:var(--c-ink-2);
  cursor:pointer;
  transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.icon-btn:hover{color:var(--c-ink);border-color:var(--c-line-2);background:rgba(255,255,255,.05)}
.menu-btn{display:none}

/* ============ 通用按钮 / 徽章 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  background:linear-gradient(180deg,var(--c-accent-2),var(--c-accent));
  color:#1A1005;font-weight:700;font-size:15px;
  border:1px solid rgba(255,196,107,.6);
  box-shadow:0 12px 32px rgba(242,160,61,.3);
  cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
}
.btn-main:hover{color:#1A1005;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 18px 44px rgba(242,160,61,.42)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  background:transparent;border:1px solid rgba(255,255,255,.2);
  color:var(--c-ink);font-weight:600;font-size:15px;
  cursor:pointer;
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-2);background:rgba(31,182,166,.08);transform:translateY(-1px)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary-2)}
.link-arrow svg{transition:transform .25s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;line-height:1.6;letter-spacing:.04em;
  color:var(--c-ink-2);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
}
.badge-teal{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;color:var(--c-primary-2);
  border:1px solid rgba(31,182,166,.42);
  background:rgba(31,182,166,.1);
}
.badge-amber{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;color:var(--c-accent-2);
  border:1px solid rgba(242,160,61,.42);
  background:rgba(242,160,61,.1);
}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
  min-height:360px;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(7,12,24,.95) 0%,rgba(7,12,24,.82) 46%,rgba(7,12,24,.5) 100%),
    linear-gradient(180deg,rgba(7,12,24,.35),rgba(7,12,24,.92));
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:clamp(56px,7vw,92px) 0 clamp(42px,5vw,64px);
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:40px;
  align-items:end;
}
.crumb{font-size:13px;color:var(--c-ink-3);margin-bottom:18px}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary-2)}
.crumb span{margin:0 8px;color:var(--c-ink-3)}
.eyebrow{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--c-accent);margin-bottom:14px;display:flex;align-items:center;gap:12px}
.eyebrow::after{content:"";flex:1;max-width:120px;height:1px;background:linear-gradient(90deg,var(--c-accent),transparent)}
.cat-hero h1{font-size:clamp(30px,4.2vw,54px);line-height:1.22;font-weight:700;max-width:640px}
.cat-hero .lede{margin-top:16px;font-size:17px;line-height:1.8;color:var(--c-ink-2);max-width:560px}
.anchor-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-tags a{
  font-size:13px;color:var(--c-ink-2);
  border:1px solid var(--c-line);
  border-radius:999px;padding:6px 14px;
  background:rgba(255,255,255,.03);
  transition:border-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.anchor-tags a:hover{border-color:var(--c-primary);color:var(--c-primary-2);transform:translateY(-2px)}
.hero-hud{
  border:1px solid var(--c-line);
  border-radius:var(--r-big);
  background:var(--c-panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  padding:24px 24px 20px;
}
.hero-hud .hud-top{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:12px;color:var(--c-ink-3);letter-spacing:.08em}
.hud-rows{margin-top:16px}
.hud-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-top:1px solid var(--c-line);font-size:14px}
.hud-row:first-child{border-top:0}
.hud-row span{color:var(--c-ink-2)}
.hud-row b{font-family:var(--font-mono);font-weight:600;color:var(--c-ink)}
.hud-bar{margin-top:18px}
.hud-bar-label{display:flex;justify-content:space-between;font-size:12px;color:var(--c-ink-3);font-family:var(--font-mono);margin-bottom:8px}
.bar-track{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));animation:fillIn 1.2s ease-out both}
@keyframes fillIn{from{width:0}}
.tick-line{height:1px;background:linear-gradient(90deg,var(--c-accent),rgba(255,255,255,.06) 45%,transparent);position:relative;z-index:2}

/* ============ 板块骨架 ============ */
.sec{padding:var(--sp-section) 0 0}
.sec-head{
  border-top:1px solid var(--c-line);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:38px;
}
.sec-num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-accent);
  display:block;
  margin-bottom:10px;
}
.sec-head h2{font-size:clamp(23px,2.6vw,34px);line-height:1.28}
.sec-head p{color:var(--c-ink-2);font-size:15px;max-width:520px;margin:10px 0 0}
.sec-side{font-size:14px;color:var(--c-ink-3);font-family:var(--font-mono);letter-spacing:.06em}

/* ============ 步骤轨道 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border:1px solid var(--c-line);
  border-radius:var(--r-big);
  background:var(--c-panel-solid);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.step{
  position:relative;
  padding:28px 26px 30px;
  border-left:1px solid var(--c-line);
  transition:background .25s var(--ease);
}
.step:first-child{border-left:0}
.step:hover{background:rgba(31,182,166,.07)}
.step-no{font-family:var(--font-mono);font-size:13px;color:var(--c-primary-2);letter-spacing:.12em}
.step h3{font-size:20px;line-height:1.4;font-weight:600;margin:14px 0 10px}
.step p{font-size:14.5px;color:var(--c-ink-2);margin:0;max-width:34ch}
.step-dot{
  position:absolute;right:22px;top:30px;
  width:8px;height:8px;border-radius:50%;
  background:rgba(255,255,255,.16);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.step:hover .step-dot{background:var(--c-accent);box-shadow:0 0 0 6px rgba(242,160,61,.14)}

/* ============ 图文交错 ============ */
.media-row{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(28px,4vw,56px);
  align-items:center;
}
.media-row + .media-row{margin-top:clamp(40px,5vw,72px)}
.media-row .figure{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  aspect-ratio:16/10;
  background:linear-gradient(135deg,#0B1526,#111C31);
}
.media-row .figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.media-row .figure:hover img{transform:scale(1.04)}
.media-row .figure::after{
  content:"";position:absolute;inset:auto 0 0 0;height:30%;
  background:linear-gradient(180deg,transparent,rgba(5,9,15,.85));
}
.media-row .fig-tag{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--c-ink-2);
}
.media-row h3{font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.4;margin-bottom:14px}
.media-row p{color:var(--c-ink-2);font-size:16px;max-width:42ch}
.check-list{margin-top:20px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-ink-2)}
.check-list svg{flex:0 0 auto;margin-top:5px;color:var(--c-primary)}

/* ============ 数据卡 ============ */
.data-band{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.data-cell{background:var(--c-panel-solid);padding:26px 24px}
.data-cell .num{font-family:var(--font-mono);font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.1;color:var(--c-ink)}
.data-cell .num small{font-size:15px;font-weight:600;color:var(--c-primary-2);margin-left:4px}
.data-cell .lab{margin-top:10px;font-size:14px;color:var(--c-ink-2)}
.data-cell .sub{margin-top:6px;font-size:13px;color:var(--c-ink-3)}

/* ============ 内容卡 ============ */
.card-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.c-card{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:rgba(17,28,49,.86);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.c-card:hover{transform:translateY(-4px);border-color:var(--c-line-2);box-shadow:var(--sh-2)}
.c-card .thumb{aspect-ratio:3/2;overflow:hidden;position:relative;border-bottom:1px solid var(--c-line)}
.c-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.c-card:hover .thumb img{transform:scale(1.04)}
.c-card .thumb::after{content:"";position:absolute;inset:auto 0 0 0;height:30%;background:linear-gradient(180deg,transparent,rgba(5,9,15,.8))}
.c-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.c-card h3{font-size:19px;line-height:1.45;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.c-card p{font-size:14.5px;color:var(--c-ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.c-card .meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--c-ink-3)}

/* ============ FAQ ============ */
.faq-wrap{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  gap:18px;
  padding:22px 0 22px 16px;
  position:relative;
  transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";
  position:absolute;left:0;top:22px;bottom:22px;width:2px;
  background:transparent;
  transition:background .25s var(--ease);
}
.faq-item[open] summary::before{background:var(--c-accent)}
.faq-no{font-family:var(--font-mono);font-size:13px;color:var(--c-accent);padding-top:4px;flex:0 0 auto}
.faq-q{font-size:17px;font-weight:600;line-height:1.6;flex:1;color:var(--c-ink)}
.faq-item summary:hover .faq-q{color:var(--c-primary-2)}
.faq-ico{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-ink-2);margin-top:2px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.faq-item[open] .faq-ico{transform:rotate(45deg);border-color:var(--c-accent);color:var(--c-accent-2)}
.faq-a{padding:0 0 24px 46px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:70ch}

/* ============ CTA ============ */
.cta-band{
  margin-top:var(--sp-section);
  position:relative;
  overflow:hidden;
  border:1px solid var(--c-line);
  border-radius:var(--r-big);
  background:var(--c-panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  padding:clamp(34px,4vw,56px);
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(600px 300px at 88% 120%,rgba(242,160,61,.16),transparent 70%);
  pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(28px,4vw,56px);align-items:center}
.cta-grid h2{font-size:clamp(23px,2.6vw,34px);line-height:1.3}
.cta-grid p{color:var(--c-ink-2);font-size:16px;margin:14px 0 26px;max-width:44ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.form-card{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:rgba(11,21,38,.72);
  padding:26px 24px;
}
.form-card h3{font-size:18px;font-weight:600;margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:7px}
.field input,.field select{
  width:100%;
  height:46px;
  padding:0 14px;
  border-radius:var(--r-input);
  border:1px solid var(--c-line);
  background:rgba(7,12,24,.7);
  color:var(--c-ink);
  font-size:15px;
  font-family:inherit;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.field select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23A8B6CC' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:38px;
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(242,160,61,.14)}
.form-card .btn-main{width:100%;margin-top:6px}
.form-note{font-size:12.5px;color:var(--c-ink-3);margin:12px 0 0}

/* ============ 页脚 ============ */
.site-foot{
  margin-top:var(--sp-section);
  border-top:1px solid var(--c-line);
  background:rgba(5,9,15,.72);
  padding:clamp(44px,5vw,64px) 0 28px;
  position:relative;
  z-index:1;
}
.foot-grid{display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.4fr));gap:36px}
.foot-brand p{color:var(--c-ink-2);font-size:14.5px;margin:16px 0 16px;max-width:34ch}
.foot-col h4{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:16px;letter-spacing:.04em}
.foot-col li{margin-bottom:11px}
.foot-col a{font-size:14px;color:var(--c-ink-2)}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(-2px);display:inline-block}
.foot-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:var(--c-ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  :root{--shell:1200px}
}
@media (min-width:1400px){
  :root{--shell:1320px}
}
@media (max-width:1199px){
  .nav-links{gap:22px}
  .nav-link-x{font-size:13.5px}
  .cat-hero-inner{grid-template-columns:1fr;align-items:start}
  .hero-hud{max-width:520px}
}
@media (max-width:991px){
  .menu-btn{display:inline-flex}
  .head-cta{display:none}
  .nav-links{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:min(340px,86vw);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:96px 24px 32px;
    background:rgba(9,16,30,.96);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--c-line);
    box-shadow:-24px 0 60px rgba(2,7,18,.55);
    transform:translateX(102%);
    transition:transform .32s var(--ease);
    z-index:70;
    overflow-y:auto;
  }
  .site-head.menu-open .nav-links{transform:translateX(0)}
  .nav-link-x{
    font-size:18px;
    padding:0;
    height:56px;
    border-bottom:1px solid var(--c-line);
    color:var(--c-ink);
  }
  .nav-link-x::after{display:none}
  .nav-pill-dot{order:-1}
  .nav-links .drawer-cta{
    margin-top:24px;
    display:inline-flex !important;
    width:100%;
  }
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:nth-child(3){border-left:0}
  .step:nth-child(n+3){border-top:1px solid var(--c-line)}
  .data-band{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .shell{padding:0 18px}
  body{font-size:15.5px}
  .head-inner{height:64px;gap:14px}
  .brand-name{font-size:16px}
  .media-row{grid-template-columns:1fr}
  .media-row .order-first{order:-1}
  .cat-hero{min-height:auto}
  .cat-hero-inner{padding:44px 0 40px}
  .btn-main,.btn-ghost{height:46px;font-size:14.5px}
  .faq-a{padding-left:0}
  .faq-item summary{padding-left:14px;gap:14px}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr}
  .step{border-left:0 !important;border-top:1px solid var(--c-line)}
  .step:first-child{border-top:0}
  .data-band{grid-template-columns:1fr}
  .card-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .form-card{padding:22px 18px}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --c-bg-0:#070C18;
  --c-bg-1:#0B1526;
  --c-bg-2:#05090F;
  --c-panel:rgba(19,32,54,.72);
  --c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);
  --c-line-2:rgba(255,255,255,.18);
  --c-primary:#1FB6A6;
  --c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;
  --c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;
  --c-ink-2:#A8B6CC;
  --c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --r-card:18px;
  --r-xl:22px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);
  --sh-2:0 24px 60px rgba(2,7,18,.6);
  --sp-section:clamp(64px,8vw,112px);
  --shell:1200px;
  --ease:cubic-bezier(.32,.72,0,1);
  --bs-body-bg:transparent;
  --bs-body-color:#E9EFF8;
  --bs-body-font-family:var(--font-sans);
  --bs-primary:#1FB6A6;
  --bs-primary-rgb:31,182,166;
  --bs-link-color:#2ED3C0;
  --bs-link-hover-color:#F2A03D;
  --bs-border-color:rgba(255,255,255,.09);
  --bs-border-radius:14px;
  --bs-emphasis-color:#E9EFF8;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:76px;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background-color:var(--c-bg-0);
  background-image:
    radial-gradient(1100px 560px at 50% -12%,rgba(31,182,166,.10),transparent 70%),
    radial-gradient(820px 460px at 100% 0%,rgba(242,160,61,.06),transparent 70%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto}
a{color:var(--c-primary-2);text-decoration:none;transition:color .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease)}
a:hover{color:var(--c-accent-2)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--shell:1320px}}
@media (max-width:575.98px){.shell{padding:0 18px}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding-top:18px;border-top:1px solid var(--c-line);margin-bottom:32px}
.sec-head .sec-no{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--c-accent);display:block;margin-bottom:8px}
.sec-head h2{margin:0;font-size:clamp(23px,2.6vw,34px);line-height:1.28;font-weight:700;letter-spacing:0}
.sec-head p{margin:8px 0 0;color:var(--c-ink-2);font-size:15px;max-width:46ch}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2);white-space:nowrap}
.link-more svg{transition:transform .25s var(--ease)}
.link-more:hover{color:var(--c-primary-2)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.read-bar{position:fixed;top:0;left:0;height:2px;width:0;z-index:1060;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));transition:width .12s linear}
.site-head{position:fixed;top:0;left:0;right:0;z-index:1040;height:76px;display:flex;align-items:center;background:rgba(7,12,24,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:height .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease)}
.site-head.scrolled{height:64px;background:rgba(7,12,24,.9);border-bottom-color:var(--c-line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:32px;height:32px;color:var(--c-primary-2);flex:0 0 auto}
.brand-name{font-size:18px;font-weight:700;letter-spacing:0}
.brand-name em{font-style:normal;color:var(--c-accent);margin-left:2px}
.nav-links{display:none;align-items:center;gap:32px}
@media (min-width:992px){.nav-links{display:flex}}
.nav-link-x{position:relative;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--c-ink-2);padding:6px 0}
.nav-link-x::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--c-primary-2);transition:width .25s var(--ease)}
.nav-link-x:hover{color:var(--c-ink)}
.nav-link-x:hover::after{width:100%}
.nav-pill-dot{width:3px;height:3px;border-radius:50%;background:var(--c-accent);opacity:0;transition:opacity .25s var(--ease)}
.nav-link-x.active{color:var(--c-ink)}
.nav-link-x.active .nav-pill-dot{opacity:1;box-shadow:0 0 8px var(--c-accent)}
.head-right{display:flex;align-items:center;gap:12px}
.btn-pill{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 20px;border-radius:var(--r-pill);font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease)}
.btn-glow{background:linear-gradient(135deg,var(--c-accent-2),var(--c-accent));color:#1A1006;box-shadow:0 8px 26px rgba(242,160,61,.32)}
.btn-glow:hover{color:#1A1006;filter:brightness(1.08);box-shadow:0 12px 34px rgba(242,160,61,.46);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--c-line-2);color:var(--c-ink)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-ink)}
.icon-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-pill);border:1px solid var(--c-line);background:rgba(19,32,54,.5);color:var(--c-ink-2);cursor:pointer;transition:color .25s var(--ease),border-color .25s var(--ease)}
.icon-btn:hover{color:var(--c-accent-2);border-color:var(--c-line-2)}
.menu-btn{display:inline-flex}
@media (min-width:992px){.menu-btn{display:none}}
.scrim{position:fixed;inset:0;background:rgba(4,8,16,.62);backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:1045}
.scrim.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:1050;background:rgba(11,21,38,.97);backdrop-filter:blur(18px);border-left:1px solid var(--c-line);transform:translateX(101%);transition:transform .3s var(--ease);padding:88px 24px 32px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer a.drawer-link{display:block;font-size:18px;line-height:56px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line)}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{color:var(--c-ink)}
.drawer .btn-pill{width:100%;margin-top:24px;height:48px}

/* ---------- 文章头部 ---------- */
.art-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line);padding:48px 0 44px}
.art-hero .hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.2;filter:saturate(.85)}
.art-hero .hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,24,.62),rgba(7,12,24,.95) 65%,var(--c-bg-0))}
.art-hero .shell{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:22px}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary-2)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .crumb-cur{color:var(--c-ink-2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-tag{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:var(--r-pill);border:1px solid rgba(31,182,166,.4);background:rgba(31,182,166,.1);color:var(--c-primary-2);font-size:12px;letter-spacing:.04em}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary-2);box-shadow:0 0 8px var(--c-primary-2)}
.art-title{margin:20px 0 0;font-size:clamp(28px,4.2vw,46px);line-height:1.24;font-weight:700;letter-spacing:0;max-width:22ch}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;font-size:13px;color:var(--c-ink-3)}
.meta-row .meta-sep{width:1px;height:12px;background:var(--c-line-2)}
.meta-row .meta-num{color:var(--c-ink-2)}

/* ---------- 布局 ---------- */
.art-layout{display:grid;grid-template-columns:1fr;gap:48px;padding:var(--sp-section) 0 0}
@media (min-width:1200px){.art-layout{grid-template-columns:minmax(0,1fr) 320px;gap:56px}}
.main-col{min-width:0}
.side-col{display:none}
@media (min-width:1200px){.side-col{display:block}}
.sticky-wrap{position:sticky;top:96px;display:grid;gap:20px}
.panel{border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-panel);box-shadow:var(--sh-1);padding:22px 22px 18px;position:relative}
.panel::before{content:"";position:absolute;inset:0;border-radius:inherit;border-top:1px solid rgba(255,255,255,.08);pointer-events:none}
.panel h3{margin:0 0 14px;font-size:15px;font-weight:600;color:var(--c-ink);letter-spacing:.02em;display:flex;align-items:center;gap:10px}
.panel h3 .panel-no{font-family:var(--font-mono);font-size:12px;color:var(--c-accent)}
.toc-list{list-style:none;margin:0;padding:0}
.toc-list li{border-bottom:1px dashed rgba(255,255,255,.08)}
.toc-list li:last-child{border-bottom:0}
.toc-list a{display:block;padding:10px 0;font-size:14px;line-height:1.6;color:var(--c-ink-2);transition:color .25s var(--ease),padding-left .25s var(--ease)}
.toc-list a:hover{color:var(--c-primary-2);padding-left:6px}
.hot-list{list-style:none;margin:0;padding:0}
.hot-list li{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-bottom:1px solid var(--c-line)}
.hot-list li:last-child{border-bottom:0}
.hot-list .hot-idx{font-family:var(--font-mono);font-size:12px;color:var(--c-accent);padding-top:3px;min-width:22px}
.hot-list a{font-size:14px;line-height:1.65;color:var(--c-ink-2)}
.hot-list a:hover{color:var(--c-primary-2)}
.side-cta{border-radius:var(--r-card);border:1px solid rgba(242,160,61,.34);background:linear-gradient(150deg,rgba(242,160,61,.14),rgba(19,32,54,.82));padding:22px}
.side-cta p{margin:0 0 16px;font-size:14px;line-height:1.75;color:var(--c-ink-2)}
.side-cta .btn-pill{width:100%;height:42px}

/* ---------- 正文 ---------- */
.prose{max-width:780px;font-size:17px;line-height:1.9;color:#DCE6F5}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.2em}
.prose h2{position:relative;margin:2.2em 0 .8em;padding:14px 0 0 16px;font-size:clamp(21px,2.2vw,26px);line-height:1.42;font-weight:700;color:var(--c-ink);border-top:1px solid var(--c-line)}
.prose h2::before{content:"";position:absolute;left:0;top:16px;bottom:.3em;width:3px;background:var(--c-accent);border-radius:2px}
.prose h3{margin:1.8em 0 .6em;font-size:19px;line-height:1.5;font-weight:600;color:var(--c-ink)}
.prose h4{margin:1.5em 0 .5em;font-size:17px;font-weight:600;color:var(--c-ink-2)}
.prose a{color:var(--c-primary-2);border-bottom:1px solid rgba(46,211,192,.35)}
.prose a:hover{color:var(--c-accent-2);border-bottom-color:rgba(242,160,61,.5)}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.35em}
.prose li{margin:.4em 0}
.prose blockquote{margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--c-primary);background:rgba(31,182,166,.07);border-radius:0 12px 12px 0;color:var(--c-ink-2)}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{display:block;max-width:100%;height:auto;margin:1.6em 0;border-radius:14px;border:1px solid var(--c-line)}
.prose figure{margin:1.6em 0}
.prose figure img{margin:0}
.prose figcaption{margin-top:10px;font-size:13px;color:var(--c-ink-3);text-align:center}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--c-line)}
.prose thead th{border-bottom:1px solid var(--c-line-2);font-weight:600;color:var(--c-ink);background:transparent}
.prose code{font-family:var(--font-mono);font-size:.9em;padding:2px 6px;border-radius:6px;background:rgba(255,255,255,.06);border:1px solid var(--c-line)}
.prose pre{margin:1.6em 0;padding:18px;border-radius:14px;background:#0A1120;border:1px solid var(--c-line);overflow-x:auto}
.prose pre code{padding:0;border:0;background:none}
.prose hr{margin:2em 0;border:0;border-top:1px solid var(--c-line)}
.empty-card{border:1px dashed var(--c-line-2);border-radius:var(--r-card);background:rgba(19,32,54,.55);padding:56px 28px;text-align:center}
.empty-card svg{color:var(--c-primary-2);margin-bottom:16px}
.empty-card h2{margin:0 0 10px;font-size:22px;color:var(--c-ink)}
.empty-card p{margin:0 0 22px;color:var(--c-ink-2);font-size:15px}

/* ---------- 卡片 ---------- */
.card-x{position:relative;display:flex;flex-direction:column;height:100%;border:1px solid var(--c-line);border-radius:var(--r-card);background:rgba(19,32,54,.6);overflow:hidden;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.card-x:hover{transform:translateY(-4px);border-color:var(--c-line-2);box-shadow:var(--sh-2);color:inherit}
.card-x .card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A1120}
.card-x .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s var(--ease)}
.card-x:hover .card-media img{transform:scale(1.04)}
.card-x .card-media::after{content:"";position:absolute;inset:auto 0 0 0;height:30%;background:linear-gradient(180deg,transparent,rgba(7,12,24,.85))}
.card-x .card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-x .card-body h3{margin:0;font-size:19px;line-height:1.45;font-weight:600;color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-x .card-body p{margin:0;font-size:14px;line-height:1.75;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-x .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3)}
.card-x .card-foot .mono{color:var(--c-accent)}
.thumb-badge{position:absolute;top:14px;left:14px;z-index:2;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;background:rgba(7,12,24,.78);border:1px solid var(--c-line-2);color:var(--c-ink-2);backdrop-filter:blur(6px)}

/* ---------- 相关推荐 ---------- */
.related{padding:var(--sp-section) 0 0}
.rel-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:576px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.back-line{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:36px;padding-top:20px;border-top:1px solid var(--c-line)}
.back-line a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.back-line a:hover{color:var(--c-primary-2)}
.back-line a svg{transition:transform .25s var(--ease)}
.back-line a:hover svg{transform:translateX(-4px)}

/* ---------- CTA ---------- */
.cta-section{padding:var(--sp-section) 0 0}
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);border:1px solid var(--c-line);background:linear-gradient(140deg,rgba(19,32,54,.92),rgba(8,14,26,.96));box-shadow:var(--sh-2);padding:clamp(28px,4vw,52px)}
.cta-band::after{content:"";position:absolute;right:-100px;bottom:-140px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(242,160,61,.24),transparent 66%);pointer-events:none}
.cta-band::before{content:"";position:absolute;left:0;top:0;height:1px;width:100%;background:linear-gradient(90deg,rgba(242,160,61,.7),transparent 60%)}
.cta-band .cta-inner{position:relative;z-index:1}
.cta-band h2{margin:0 0 12px;font-size:clamp(23px,2.6vw,32px);line-height:1.3;font-weight:700}
.cta-band .cta-lead{margin:0 0 26px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:52ch}
.field{display:grid;gap:8px}
.field label{font-size:13px;letter-spacing:.04em;color:var(--c-ink-2)}
.field input,.field select{width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);background:rgba(8,14,26,.85);border:1px solid var(--c-line);color:var(--c-ink);transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.field input::placeholder{color:#5D6B80}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(242,160,61,.16)}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A8B6CC' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.form-note{margin:16px 0 0;padding-left:12px;border-left:2px solid var(--c-primary);font-size:14px;color:var(--c-ink-2);min-height:22px}
.form-note.is-ok{border-left-color:var(--c-accent);color:var(--c-accent-2)}

/* ---------- 页脚 ---------- */
.site-foot{margin-top:var(--sp-section);border-top:1px solid var(--c-line);background:linear-gradient(180deg,rgba(11,21,38,.5),rgba(5,9,15,.9))}
.foot-grid{display:grid;grid-template-columns:1fr;gap:36px;padding:clamp(48px,6vw,72px) 0 36px}
@media (min-width:576px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot-brand p{margin:16px 0 16px;font-size:14px;line-height:1.85;color:var(--c-ink-2);max-width:38ch}
.badge-soft{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:rgba(19,32,54,.6);font-size:12px;letter-spacing:.04em;color:var(--c-ink-2)}
.foot-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--c-ink);letter-spacing:.04em}
.foot-col ul{list-style:none;margin:0;padding:0}
.foot-col li{margin:0 0 10px}
.foot-col a{font-size:14px;color:var(--c-ink-2);display:inline-block;transition:color .25s var(--ease),transform .25s var(--ease)}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(2px)}
.foot-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;padding:20px 0 32px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3)}
.foot-bottom .mono{color:var(--c-ink-3)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
@media (max-width:575.98px){
  .art-title{max-width:100%}
  .meta-row{gap:10px}
  .head-cta{display:none}
  .panel{padding:20px 18px 16px}
  .cta-band{border-radius:18px}
}

/* roulang page: category3 */
:root{
  --c-bg-0:#070C18;--c-bg-1:#0B1526;--c-bg-2:#05090F;
  --c-panel:rgba(19,32,54,.72);--c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);--c-line-2:rgba(255,255,255,.2);
  --c-primary:#1FB6A6;--c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;--c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;--c-ink-2:#A8B6CC;--c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --r-card:18px;--r-lg:22px;--r-input:12px;--r-pill:999px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);--sh-2:0 24px 60px rgba(2,7,18,.6);
  --sp-section:clamp(64px,8vw,112px);
  --ease:cubic-bezier(.32,.72,0,1);
  --bs-primary:#1FB6A6;--bs-body-bg:#070C18;--bs-body-color:#E9EFF8;
  --bs-border-color:rgba(255,255,255,.09);--bs-body-font-family:var(--font-sans);
  --bs-link-color:#2ED3C0;--bs-link-hover-color:#FFC46B;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg-0);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 100%);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(90% 60% at 50% -10%,rgba(31,182,166,.12),transparent 60%),
             radial-gradient(70% 50% at 100% 0%,rgba(242,160,61,.07),transparent 60%);
}
img{max-width:100%;display:block}
a{color:var(--c-primary-2);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-accent-2)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;color:var(--c-ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1400px){.shell{max-width:1320px}}
.site-head,.site-foot,main{position:relative;z-index:2}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,24,.66);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-head.scrolled{background:rgba(6,11,21,.9);box-shadow:0 8px 26px rgba(2,7,18,.5)}
.head-inner{display:flex;align-items:center;gap:26px;height:76px;transition:height .25s var(--ease)}
.site-head.scrolled .head-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);text-decoration:none;flex:0 0 auto}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:32px;height:32px;color:var(--c-primary);flex:0 0 auto}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-name em{font-style:normal;color:var(--c-accent);font-weight:700;margin-left:2px}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link-x{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:500;color:var(--c-ink-2);text-decoration:none;padding:6px 0;
  transition:color .25s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1px;
  background:linear-gradient(90deg,var(--c-primary),rgba(46,211,192,0));
  transition:right .3s var(--ease);
}
.nav-link-x:hover{color:var(--c-ink)}
.nav-link-x:hover::after{right:0}
.nav-link-x.active{color:var(--c-ink);font-weight:700}
.nav-pill-dot{display:none;width:5px;height:5px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 8px rgba(242,160,61,.8)}
.nav-link-x.active .nav-pill-dot{display:inline-block}
.head-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-pill);
  background:linear-gradient(180deg,var(--c-accent-2),var(--c-accent));
  color:#10192B;font-size:14px;font-weight:700;border:1px solid rgba(255,196,107,.6);
  box-shadow:0 8px 22px rgba(242,160,61,.28);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
}
.btn-pill:hover{color:#10192B;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 12px 30px rgba(242,160,61,.4)}
.btn-pill:active{transform:translateY(0)}
.head-cta{white-space:nowrap}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);background:rgba(255,255,255,.04);
  border:1px solid var(--c-line);color:var(--c-ink-2);cursor:pointer;
  transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.icon-btn:hover{color:var(--c-primary-2);border-color:rgba(31,182,166,.5);background:rgba(31,182,166,.08)}
.menu-btn{display:none}

/* ---------- hero ---------- */
.hero-cat{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,24,.82),rgba(7,12,24,.92) 55%,rgba(7,12,24,.98)),
             radial-gradient(80% 70% at 12% 20%,rgba(31,182,166,.22),transparent 60%);
}
.hero-inner{position:relative;z-index:2;padding:56px 24px 62px;min-height:360px;display:flex;flex-direction:column;justify-content:center}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:20px}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary-2)}
.crumb span.sep{color:rgba(255,255,255,.22)}
.kicker{
  display:inline-flex;align-items:center;gap:10px;align-self:flex-start;
  font-size:12px;color:var(--c-accent-2);letter-spacing:.12em;text-transform:uppercase;
  padding:6px 14px;border:1px solid rgba(242,160,61,.36);border-radius:var(--r-pill);
  background:rgba(242,160,61,.08);margin-bottom:20px;
}
.kicker::before{content:"";width:18px;height:1px;background:var(--c-accent)}
.hero-cat h1{font-size:clamp(30px,4.2vw,54px);line-height:1.22;max-width:22ch;font-weight:700}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--c-ink-2);max-width:52ch}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;
  border-radius:var(--r-pill);border:1px solid var(--c-line-2);color:var(--c-ink);
  font-size:15px;font-weight:600;background:transparent;
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-2);background:rgba(31,182,166,.08);transform:translateY(-1px)}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 26px;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,var(--c-accent-2),var(--c-accent));
  color:#10192B;font-size:15px;font-weight:700;border:1px solid rgba(255,196,107,.6);
  box-shadow:0 12px 30px rgba(242,160,61,.3);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
}
.btn-main:hover{color:#10192B;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 16px 38px rgba(242,160,61,.42)}
.anchor-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.anchor-tags a{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:var(--r-pill);
  font-size:13px;color:var(--c-ink-2);border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.anchor-tags a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-primary);opacity:.7}
.anchor-tags a:hover{color:var(--c-ink);border-color:rgba(31,182,166,.5);background:rgba(31,182,166,.09)}

/* ---------- sections ---------- */
.sec{padding:var(--sp-section) 0;border-top:1px solid var(--c-line)}
.sec:first-of-type{border-top:none}
.sec-head{margin-bottom:44px}
.sec-num{
  display:block;font-size:12px;letter-spacing:.16em;color:var(--c-accent-2);margin-bottom:14px;
}
.sec-title{font-size:clamp(23px,2.6vw,34px);line-height:1.28;max-width:26ch}
.sec-desc{margin-top:14px;color:var(--c-ink-2);font-size:16px;line-height:1.85;max-width:60ch}
.sec-head.split{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px}

/* rail timeline */
.rail{position:relative;padding-top:8px}
.rail-track{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.rail-line{
  position:absolute;left:0;right:0;top:26px;height:1px;
  background:linear-gradient(90deg,rgba(31,182,166,.15),rgba(31,182,166,.6) 22%,rgba(242,160,61,.7) 55%,rgba(31,182,166,.15));
}
.rail-node{position:relative;padding-right:8px}
.rail-dot{
  position:relative;z-index:2;width:12px;height:12px;border-radius:50%;
  margin:20px 0 20px;background:var(--c-bg-0);border:1px solid var(--c-primary);
  box-shadow:0 0 0 4px rgba(7,12,24,1);
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.rail-node:hover .rail-dot{background:var(--c-accent);border-color:var(--c-accent-2);transform:scale(1.15);box-shadow:0 0 0 5px rgba(7,12,24,1),0 0 16px rgba(242,160,61,.65)}
.rail-name{font-size:16px;font-weight:700;margin-bottom:8px}
.rail-text{font-size:14px;line-height:1.75;color:var(--c-ink-2)}
.rail-meta{display:inline-block;margin-top:12px;font-size:12px;color:var(--c-primary-2);border:1px solid rgba(31,182,166,.32);border-radius:var(--r-pill);padding:2px 10px;background:rgba(31,182,166,.08)}

/* content cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card-b{
  display:flex;flex-direction:column;overflow:hidden;
  background:linear-gradient(180deg,rgba(19,32,54,.82),rgba(11,21,38,.86));
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card-b:hover{transform:translateY(-4px);border-color:var(--c-line-2);box-shadow:var(--sh-2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--c-line)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card-b:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:30%;background:linear-gradient(180deg,transparent,rgba(7,12,24,.9))}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.card-badge{
  align-self:flex-start;font-size:12px;padding:3px 11px;border-radius:var(--r-pill);
  border:1px solid rgba(31,182,166,.4);color:var(--c-primary-2);background:rgba(31,182,166,.1);
  margin-bottom:14px;
}
.card-title{font-size:19px;line-height:1.45;font-weight:700;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14px;line-height:1.8;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:18px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3);display:flex;justify-content:space-between;gap:12px}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--c-primary-2);margin-top:16px}
.link-arrow svg{transition:transform .25s var(--ease)}
.link-arrow:hover{color:var(--c-accent-2)}
.link-arrow:hover svg{transform:translateX(4px)}

/* figure + list */
.figure-x{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1);aspect-ratio:3/2}
.figure-x img{width:100%;height:100%;object-fit:cover}
.figure-x::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(7,12,24,.85))}
.figure-cap{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;font-size:13px;color:var(--c-ink-2)}
.check-list{display:grid;gap:16px;margin-top:8px}
.check-item{display:flex;gap:14px;padding:18px 20px;border:1px solid var(--c-line);border-radius:14px;background:rgba(19,32,54,.4);transition:border-color .25s var(--ease),background .25s var(--ease)}
.check-item:hover{border-color:rgba(31,182,166,.45);background:rgba(31,182,166,.07)}
.check-item svg{flex:0 0 auto;margin-top:5px;color:var(--c-primary-2)}
.check-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.check-item p{font-size:14px;line-height:1.75;color:var(--c-ink-2)}

/* data strip */
.data-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.data-card{
  padding:24px;border-radius:var(--r-card);border:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(19,32,54,.6),rgba(9,17,32,.72));
}
.data-num{font-family:var(--font-mono);font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--c-ink);line-height:1.2}
.data-num em{font-style:normal;color:var(--c-primary-2);font-size:.62em;margin-left:4px}
.data-label{margin-top:10px;padding-top:10px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2)}
.meter-wrap{margin-top:34px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.meter-row{margin-bottom:8px}
.meter-head{display:flex;justify-content:space-between;font-size:14px;color:var(--c-ink-2);margin-bottom:10px}
.meter-head b{font-family:var(--font-mono);color:var(--c-primary-2);font-weight:700}
.meter{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.06);border:1px solid var(--c-line);overflow:hidden}
.meter-fill{height:100%;width:0;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2));transition:width 1.2s ease-out}

/* assure list */
.assure{display:grid;gap:0;border-top:1px solid var(--c-line)}
.assure-item{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:22px 4px;border-bottom:1px solid var(--c-line);align-items:start;transition:padding-left .25s var(--ease)}
.assure-item:hover{padding-left:10px}
.assure-no{font-family:var(--font-mono);font-size:13px;color:var(--c-accent-2);padding-top:4px}
.assure-item h3{font-size:17px;font-weight:700;margin-bottom:6px}
.assure-item p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2)}

/* FAQ */
.faq-x .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--c-line);
}
.faq-x .accordion-button{
  background:transparent;color:var(--c-ink);box-shadow:none;padding:22px 4px;
  display:flex;align-items:flex-start;gap:16px;font-size:17px;font-weight:600;
  transition:box-shadow .25s var(--ease),color .25s var(--ease);
}
.faq-x .accordion-button:not(.collapsed){color:var(--c-accent-2);box-shadow:inset 2px 0 0 var(--c-accent)}
.faq-x .accordion-button::after{display:none}
.faq-x .accordion-button:focus{box-shadow:inset 2px 0 0 var(--c-accent),0 0 0 2px rgba(242,160,61,.4)}
.fq-num{font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3);padding-top:4px;flex:0 0 auto}
.fq-q{flex:1;text-align:left;line-height:1.5}
.fq-ico{flex:0 0 auto;margin-top:2px;color:var(--c-primary-2);transition:transform .25s var(--ease),color .25s var(--ease)}
.accordion-button:not(.collapsed) .fq-ico{transform:rotate(45deg);color:var(--c-accent-2)}
.faq-x .accordion-body{padding:0 4px 26px 46px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:70ch}

/* CTA band */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.1);
  background:linear-gradient(160deg,rgba(19,32,54,.86),rgba(9,17,32,.9));
  box-shadow:var(--sh-2);padding:clamp(30px,4vw,52px);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 90% at 88% 12%,rgba(242,160,61,.18),transparent 62%),
             radial-gradient(50% 80% at 4% 96%,rgba(31,182,166,.16),transparent 60%);
  pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 70%);
  mask-image:linear-gradient(180deg,#000,transparent 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:start}
.cta-inner h2{font-size:clamp(23px,2.5vw,32px);line-height:1.3;margin-bottom:14px}
.cta-inner p{color:var(--c-ink-2);font-size:15.5px;line-height:1.85;max-width:44ch}
.cta-ticks{margin-top:24px;display:grid;gap:10px}
.cta-ticks li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2);align-items:flex-start}
.cta-ticks svg{flex:0 0 auto;margin-top:5px;color:var(--c-primary-2)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--c-ink-3);letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;background:rgba(7,12,24,.72);border:1px solid var(--c-line);
  border-radius:var(--r-input);padding:12px 14px;font-size:14.5px;color:var(--c-ink);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(110,126,150,.85)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(242,160,61,.16);background:rgba(7,12,24,.9);
}
.field select{
  appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236E7E96' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
.form-foot{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:6px}
.btn-submit{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 30px;
  border-radius:var(--r-pill);border:1px solid rgba(255,196,107,.6);
  background:linear-gradient(180deg,var(--c-accent-2),var(--c-accent));color:#10192B;
  font-size:15px;font-weight:700;cursor:pointer;
  box-shadow:0 12px 30px rgba(242,160,61,.3);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
}
.btn-submit:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 16px 38px rgba(242,160,61,.42)}
.form-note{font-size:13px;color:var(--c-ink-3)}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;font-size:14px;border-radius:10px;
  border:1px solid rgba(31,182,166,.4);background:rgba(31,182,166,.1);color:var(--c-primary-2);
  border-left-width:3px;
}
.form-msg.show{display:block}

/* footer */
.site-foot{border-top:1px solid var(--c-line);background:linear-gradient(180deg,rgba(7,12,24,.4),rgba(5,9,15,.9));padding-top:56px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--c-ink-2);max-width:34ch}
.badge-soft{
  display:inline-block;margin-top:16px;font-size:12px;padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid var(--c-line-2);color:var(--c-ink-2);background:rgba(255,255,255,.04);
}
.foot-col h4{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:18px}
.foot-col li{margin-bottom:12px}
.foot-col a{font-size:14px;color:var(--c-ink-2);display:inline-block;transition:color .25s var(--ease),transform .25s var(--ease)}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(2px)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--c-line);padding:22px 0 28px;font-size:13px;color:var(--c-ink-3);
}
.foot-bottom .mono{color:var(--c-ink-3)}

/* responsive */
@media (max-width:1199px){
  .rail-track{grid-template-columns:repeat(3,1fr);gap:26px 20px}
  .rail-line{display:none}
  .rail-node{border-top:1px solid var(--c-line);padding-top:18px}
  .rail-dot{margin:0 0 14px}
  .data-strip{grid-template-columns:repeat(2,1fr)}
  .meter-wrap{grid-template-columns:1fr}
}
@media (max-width:991px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:92px 24px 28px;background:rgba(9,16,29,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--c-line);box-shadow:-24px 0 60px rgba(2,7,18,.6);
    transform:translateX(103%);transition:transform .32s var(--ease);
    overflow-y:auto;z-index:90;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link-x{height:56px;font-size:18px;font-weight:600;border-bottom:1px solid var(--c-line);padding:0}
  .nav-link-x::after{display:none}
  .nav-pill-dot{width:6px;height:6px}
  .menu-btn{display:inline-flex}
  .head-cta{display:none}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-inner{padding:44px 24px 50px;min-height:320px}
}
@media (max-width:767px){
  .shell{padding:0 18px}
  .hero-inner{padding:36px 18px 44px}
  .hero-lead{font-size:16px}
  .hero-btns{gap:12px}
  .hero-btns .btn-main,.hero-btns .btn-ghost{flex:1 1 100%;justify-content:center}
  .rail-track{grid-template-columns:1fr;gap:0}
  .rail-node{border-top:1px solid var(--c-line);padding:18px 0 22px 20px;position:relative}
  .rail-node::before{
    content:"";position:absolute;left:0;top:26px;bottom:-4px;width:1px;
    background:linear-gradient(180deg,rgba(31,182,166,.6),rgba(31,182,166,.05));
  }
  .rail-dot{margin:0 0 14px -26px}
  .grid-3{grid-template-columns:1fr}
  .data-strip{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .assure-item{grid-template-columns:1fr;gap:6px}
  .faq-x .accordion-body{padding-left:4px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{justify-content:flex-start}
  .sec-head{margin-bottom:32px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .brand-name{font-size:16px}
  .card-body{padding:20px}
  .data-card{padding:20px}
  .cta-band{padding:24px 20px}
  .btn-submit{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --c-bg-0:#070C18;
  --c-bg-1:#0B1526;
  --c-bg-2:#05090F;
  --c-panel:rgba(19,32,54,.72);
  --c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);
  --c-primary:#1FB6A6;
  --c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;
  --c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;
  --c-ink-2:#A8B6CC;
  --c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Consolas,"SFMono-Regular",Menlo,monospace;
  --r-card:18px;
  --r-lg:22px;
  --r-input:12px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);
  --sh-2:0 24px 60px rgba(2,7,18,.6);
  --sp-section:clamp(64px,8vw,112px);
  --tr:.25s cubic-bezier(.32,.72,0,1);

  --bs-primary:#1FB6A6;
  --bs-body-bg:transparent;
  --bs-body-color:#E9EFF8;
  --bs-border-color:rgba(255,255,255,.09);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --bs-link-color:#2ED3C0;
  --bs-link-hover-color:#FFC46B;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background-color:var(--c-bg-0);
  background-image:
    radial-gradient(1100px 560px at 50% -8%, rgba(31,182,166,.10), transparent 62%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto,64px 64px,64px 64px;
  background-attachment:fixed,fixed,fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-2);text-decoration:none;transition:color var(--tr),border-color var(--tr),background-color var(--tr),transform var(--tr),box-shadow var(--tr);}
a:hover{color:var(--c-accent-2);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;color:var(--c-ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.shell{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ============ HEADER ============ */
.site-head{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  height:76px;
  background:rgba(7,12,24,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:height var(--tr),background-color var(--tr);
}
.site-head.is-scrolled{height:64px;background:rgba(7,12,24,.9);}
.head-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-ink);
  font-weight:700;
  letter-spacing:0;
  flex:0 0 auto;
}
.brand:hover{color:var(--c-ink);}
.brand-mark{width:28px;height:28px;color:var(--c-primary);flex:0 0 auto;transition:color var(--tr),transform var(--tr);}
.brand:hover .brand-mark{color:var(--c-accent);transform:rotate(12deg);}
.brand-name{font-size:17px;white-space:nowrap;}
.brand-name em{font-style:normal;color:var(--c-primary-2);}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-link-x{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:14px;
  font-weight:500;
  color:var(--c-ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-x::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:1px;
  width:0;
  background:var(--c-primary-2);
  transition:width var(--tr);
}
.nav-link-x:hover{color:var(--c-ink);}
.nav-link-x:hover::after{width:100%;}
.nav-pill-dot{
  width:5px;height:5px;border-radius:50%;
  background:var(--c-ink-3);
  transition:background-color var(--tr),box-shadow var(--tr);
}
.nav-link-x.active{color:var(--c-ink);}
.nav-link-x.active .nav-pill-dot{background:var(--c-accent);box-shadow:0 0 0 3px rgba(242,160,61,.18);}
.nav-link-x.active::after{width:100%;background:rgba(242,160,61,.6);}
.head-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.btn-pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  border:1px solid transparent;
  cursor:pointer;
}
.head-cta{
  background:var(--c-accent);
  color:#14100A;
  box-shadow:0 6px 20px rgba(242,160,61,.28);
}
.head-cta:hover{
  background:var(--c-accent-2);
  color:#14100A;
  transform:translateY(-1px);
  box-shadow:0 10px 28px rgba(242,160,61,.4);
}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.02);
  color:var(--c-ink-2);
  cursor:pointer;
  transition:color var(--tr),border-color var(--tr),background-color var(--tr);
}
.icon-btn:hover{color:var(--c-primary-2);border-color:rgba(46,211,192,.5);background:rgba(31,182,166,.08);}
.menu-btn{display:none;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(4,8,16,.66);
  backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);
  z-index:190;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(86vw,364px);
  background:rgba(11,21,38,.97);
  backdrop-filter:blur(18px);
  border-left:1px solid var(--c-line);
  transform:translateX(102%);
  transition:transform .3s cubic-bezier(.32,.72,0,1);
  z-index:200;
  display:flex;
  flex-direction:column;
  padding:22px 22px 28px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--c-line);}
.drawer-nav a{
  font-size:18px;
  color:var(--c-ink);
  padding:0;
  height:56px;
  display:flex;
  align-items:center;
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.active{color:var(--c-accent-2);}
.drawer-cta{margin-top:auto;padding-top:24px;}
.drawer-cta .btn-pill{width:100%;height:46px;font-size:15px;background:var(--c-accent);color:#14100A;}
.drawer-note{font-size:13px;color:var(--c-ink-3);margin-top:14px;line-height:1.7;}

/* ============ HERO ============ */
.page-hero{
  position:relative;
  margin-top:76px;
  min-height:382px;
  display:flex;
  align-items:center;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg, rgba(5,9,15,.94) 0%, rgba(5,9,15,.78) 46%, rgba(5,9,15,.5) 100%),
    linear-gradient(180deg, rgba(7,12,24,.6) 0%, rgba(7,12,24,.9) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(242,160,61,.75), transparent);
}
.hero-inner{position:relative;z-index:2;padding:58px 24px 54px;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-3);
  margin-bottom:20px;
}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary-2);}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--c-accent-2);
  margin-bottom:16px;
}
.hero-kicker::before{
  content:"";
  width:26px;height:1px;
  background:var(--c-accent);
  display:inline-block;
}
.page-hero h1{
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.24;
  max-width:20em;
  margin-bottom:16px;
}
.hero-lead{
  font-size:17px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:44em;
  margin-bottom:26px;
}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-tag{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.03);
  font-size:13px;
  color:var(--c-ink-2);
}
.anchor-tag:hover{
  color:var(--c-primary-2);
  border-color:rgba(46,211,192,.55);
  background:rgba(31,182,166,.1);
  transform:translateY(-2px);
}

/* ============ SECTIONS ============ */
.sec{padding:var(--sp-section) 0 0;}
.sec:last-of-type{padding-bottom:0;}
.sec-head{
  position:relative;
  padding-top:22px;
  border-top:1px solid var(--c-line);
  margin-bottom:34px;
}
.sec-num{
  display:block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-accent);
  margin-bottom:10px;
}
.sec-title{font-size:clamp(23px,2.6vw,34px);line-height:1.28;margin-bottom:10px;}
.sec-sub{font-size:16px;line-height:1.8;color:var(--c-ink-2);max-width:46em;}

/* metric strip */
.metric-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}
.metric-card{
  background:linear-gradient(180deg, rgba(19,32,54,.86), rgba(13,23,40,.86));
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  position:relative;
  overflow:hidden;
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.metric-card::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg, var(--c-primary), transparent 70%);
  opacity:.7;
}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.18);box-shadow:var(--sh-2);}
.metric-num{
  font-family:var(--font-mono);
  font-size:clamp(28px,3vw,38px);
  line-height:1.1;
  font-weight:700;
  color:var(--c-ink);
  margin-bottom:8px;
}
.metric-num span{font-size:16px;color:var(--c-primary-2);margin-left:2px;}
.metric-label{font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:6px;}
.metric-note{font-size:13px;line-height:1.7;color:var(--c-ink-3);border-top:1px solid var(--c-line);padding-top:10px;margin-top:12px;}

/* panels & lists */
.panel{
  background:linear-gradient(180deg, rgba(19,32,54,.78), rgba(13,23,40,.78));
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:28px 26px;
  box-shadow:var(--sh-1);
}
.panel-tight{padding:22px 22px;}
.lead-para{font-size:16.5px;line-height:1.9;color:var(--c-ink-2);}
.lead-para + .lead-para{margin-top:16px;}
.lead-para strong{color:var(--c-ink);font-weight:600;}

.info-list{display:flex;flex-direction:column;}
.info-item{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--c-line);
}
.info-item:first-child{padding-top:4px;}
.info-item:last-child{border-bottom:none;padding-bottom:4px;}
.info-idx{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--c-primary-2);
  padding-top:4px;
  flex:0 0 auto;
  width:34px;
}
.info-body h3{font-size:17px;margin-bottom:6px;}
.info-body p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}

/* step rail */
.step-rail{position:relative;padding-left:34px;}
.step-rail::before{
  content:"";
  position:absolute;
  left:7px;top:10px;bottom:10px;
  width:1px;
  background:linear-gradient(180deg, rgba(31,182,166,.7), rgba(255,255,255,.08));
}
.step-node{position:relative;padding:0 0 26px;}
.step-node:last-child{padding-bottom:0;}
.step-node::before{
  content:"";
  position:absolute;
  left:-34px;top:8px;
  width:15px;height:15px;
  border-radius:50%;
  background:var(--c-bg-1);
  border:1px solid rgba(31,182,166,.8);
  box-shadow:0 0 0 4px rgba(31,182,166,.08);
}
.step-node.is-current::before{background:var(--c-accent);border-color:var(--c-accent);box-shadow:0 0 0 5px rgba(242,160,61,.16);}
.step-node h3{font-size:17px;margin-bottom:6px;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;}
.step-node h3 .mono{font-size:13px;color:var(--c-accent);}
.step-node p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}

/* content cards */
.card-b{
  display:flex;
  flex-direction:column;
  height:100%;
  background:linear-gradient(180deg, rgba(19,32,54,.82), rgba(12,21,37,.9));
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.card-b:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.18);box-shadow:var(--sh-2);}
.card-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background:var(--c-panel-solid);
}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.32,.72,0,1);}
.card-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(5,9,15,.05) 40%, rgba(5,9,15,.72) 100%);
}
.card-b:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(46,211,192,.36);
  background:rgba(31,182,166,.09);
  color:var(--c-primary-2);
  font-size:12.5px;
  letter-spacing:.02em;
  align-self:flex-start;
}
.badge-accent{
  border-color:rgba(242,160,61,.4);
  background:rgba(242,160,61,.1);
  color:var(--c-accent-2);
}
.card-title{font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-text{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--c-ink-3);
  border-top:1px solid var(--c-line);
  padding-top:12px;
  margin-top:auto;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-primary-2);
  font-weight:500;
}
.text-link svg{transition:transform var(--tr);}
.text-link:hover svg{transform:translateX(4px);}

/* tag cloud */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag-cloud span{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  font-size:13px;
  color:var(--c-ink-2);
}
.tag-cloud span:hover{border-color:rgba(46,211,192,.5);color:var(--c-primary-2);}

/* FAQ */
.faq{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);position:relative;}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:var(--c-accent);
  opacity:0;
  transition:opacity var(--tr);
}
.faq-item.active::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 8px 22px 16px;
  background:none;
  border:none;
  text-align:left;
  color:var(--c-ink);
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  transition:color var(--tr);
}
.faq-q:hover{color:var(--c-accent-2);}
.faq-idx{font-family:var(--font-mono);font-size:13px;color:var(--c-accent);flex:0 0 auto;}
.faq-q .faq-sign{margin-left:auto;flex:0 0 auto;color:var(--c-ink-3);transition:transform var(--tr),color var(--tr);}
.faq-item.active .faq-q .faq-sign{transform:rotate(45deg);color:var(--c-accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s cubic-bezier(.32,.72,0,1);
}
.faq-a-inner{padding:0 8px 24px 46px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}

/* CTA band */
.cta-band{
  position:relative;
  margin-top:var(--sp-section);
  padding:46px 34px;
  border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.1);
  background:
    radial-gradient(600px 260px at 88% 0%, rgba(242,160,61,.16), transparent 70%),
    linear-gradient(180deg, rgba(22,36,60,.86), rgba(11,21,38,.92));
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:56px 56px;
  opacity:.6;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-title{font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin-bottom:10px;}
.cta-sub{font-size:15.5px;line-height:1.85;color:var(--c-ink-2);max-width:42em;}
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin-top:26px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--c-ink-2);}
.field input,.field select{
  height:46px;
  padding:0 14px;
  border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(6,11,20,.7);
  color:var(--c-ink);
  font-size:15px;
  font-family:inherit;
  transition:border-color var(--tr),box-shadow var(--tr);
  width:100%;
  appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23A8B6CC' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:38px;
}
.field input:focus,.field select:focus{
  outline:none;
  border-color:var(--c-accent);
  box-shadow:0 0 0 4px rgba(242,160,61,.16);
}
.field input::placeholder{color:var(--c-ink-3);}
.form-submit{
  grid-column:1/-1;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  margin-top:6px;
}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:48px;
  padding:0 28px;
  border-radius:999px;
  border:none;
  background:var(--c-accent);
  color:#14100A;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  box-shadow:0 10px 26px rgba(242,160,61,.3);
  transition:background-color var(--tr),transform var(--tr),box-shadow var(--tr),filter var(--tr);
}
.btn-main:hover{background:var(--c-accent-2);transform:translateY(-1px);box-shadow:0 14px 34px rgba(242,160,61,.42);filter:brightness(1.06);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.2);
  background:transparent;
  color:var(--c-ink);
  font-size:15px;
  font-weight:500;
  cursor:pointer;
}
.btn-ghost:hover{border-color:rgba(46,211,192,.6);color:var(--c-primary-2);transform:translateY(-1px);}
.form-note{font-size:13px;color:var(--c-ink-3);}
.form-toast{
  display:none;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--c-primary-2);
  border-left:2px solid var(--c-primary);
  padding-left:12px;
}
.form-toast.show{display:flex;}

/* footer */
.site-foot{
  margin-top:var(--sp-section);
  border-top:1px solid var(--c-line);
  background:linear-gradient(180deg, rgba(9,16,29,.6), rgba(5,9,15,.98));
  padding:56px 0 26px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:36px;
  border-bottom:1px solid var(--c-line);
}
.foot-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--c-ink-2);
  margin:16px 0 14px;
  max-width:34em;
}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink);}
.foot-col ul{display:flex;flex-direction:column;gap:12px;}
.foot-col a{font-size:14px;color:var(--c-ink-2);display:inline-block;}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(2px);}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 30px;
  justify-content:space-between;
  padding-top:24px;
  font-size:13px;
  color:var(--c-ink-3);
}
.foot-bottom .mono{font-size:12.5px;}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease-out,transform .6s ease-out;}
.reveal.in{opacity:1;transform:none;}

@media (min-width:1440px){
  .shell{max-width:1320px;}
}
@media (max-width:1199px){
  .nav-links{gap:22px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .menu-btn{display:inline-flex;}
  .head-cta{display:none;}
  .site-head{height:66px;}
  .page-hero{margin-top:66px;min-height:340px;}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{background-attachment:scroll,scroll,scroll;}
  .shell{padding-left:18px;padding-right:18px;}
  .hero-inner{padding:44px 18px 40px;}
  .page-hero{min-height:308px;}
  .cta-band{padding:32px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .panel{padding:22px 18px;}
  .faq-q{font-size:16px;padding:20px 6px 20px 12px;}
  .faq-a-inner{padding:0 6px 22px 34px;}
  .form-submit .btn-main,.form-submit .btn-ghost{width:100%;}
}
@media (max-width:575px){
  .metric-strip{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .brand-name{font-size:16px;}
  .step-rail{padding-left:26px;}
  .step-node::before{left:-26px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --c-bg-0:#070C18;
  --c-bg-1:#0B1526;
  --c-bg-2:#05090F;
  --c-panel:rgba(19,32,54,.72);
  --c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);
  --c-line-strong:rgba(255,255,255,.18);
  --c-primary:#1FB6A6;
  --c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;
  --c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;
  --c-ink-2:#A8B6CC;
  --c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --r-card:18px;
  --r-lg:22px;
  --r-in:12px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);
  --sh-2:0 24px 60px rgba(2,7,18,.6);
  --sp-section:clamp(64px,8vw,112px);
  --ease:cubic-bezier(.32,.72,0,1);
  --t:.25s var(--ease);
  --bootstrap-primary:#1FB6A6;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(120% 70% at 50% -10%,rgba(31,182,166,.10),transparent 62%),
    radial-gradient(90% 60% at 50% 108%,rgba(242,160,61,.07),transparent 60%),
    radial-gradient(80% 60% at 50% 40%,transparent 30%,rgba(5,9,15,.85) 100%);
}
img{max-width:100%;display:block}
a{color:var(--c-primary-2);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-accent-2)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.28}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}

.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
@media (min-width:1440px){.shell{max-width:1320px}}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.sec{position:relative;z-index:2;padding:var(--sp-section) 0}
.sec-line{border-top:1px solid var(--c-line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-tag{font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:var(--c-accent);display:flex;align-items:center;gap:10px}
.sec-tag::before{content:"";width:28px;height:1px;background:var(--c-accent);display:block}
.sec-head h2{font-size:clamp(23px,2.6vw,34px);margin-top:14px}
.sec-desc{color:var(--c-ink-2);font-size:15px;max-width:560px;margin-top:12px}

/* ============ 导航 ============ */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,24,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:height var(--t),background var(--t);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:76px;transition:height var(--t)}
.site-head.scrolled .head-inner{height:64px}
.site-head.scrolled{background:rgba(7,12,24,.9)}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:30px;height:30px;color:var(--c-primary-2);flex:none}
.brand-name{font-size:18px;font-weight:700;line-height:1;white-space:nowrap}
.brand-name em{font-style:normal;color:var(--c-ink-3);font-weight:500}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link-x{
  position:relative;display:inline-flex;align-items:center;
  font-size:14px;font-weight:500;color:var(--c-ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--c-primary-2);transition:width var(--t);
}
.nav-link-x:hover{color:var(--c-ink)}
.nav-link-x:hover::after{width:100%}
.nav-pill-dot{width:3px;height:3px;border-radius:50%;background:var(--c-accent);display:inline-block;margin-right:7px;opacity:0;transition:opacity var(--t)}
.nav-link-x.active{color:var(--c-ink)}
.nav-link-x.active .nav-pill-dot{opacity:1}
.head-right{display:flex;align-items:center;gap:12px}
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:999px;
  background:linear-gradient(135deg,var(--c-accent),var(--c-accent-2));
  color:#14100A;font-size:14px;font-weight:700;border:1px solid rgba(255,196,107,.55);
  box-shadow:0 8px 24px rgba(242,160,61,.24);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-pill:hover{color:#14100A;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 14px 34px rgba(242,160,61,.34)}
.icon-btn{
  width:38px;height:38px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);border:1px solid var(--c-line);color:var(--c-ink-2);
  cursor:pointer;transition:color var(--t),border-color var(--t),background var(--t);
}
.icon-btn:hover{color:var(--c-primary-2);border-color:var(--c-line-strong);background:rgba(255,255,255,.07)}
.menu-btn{display:none}
.nav-drawer-cta{display:none}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);padding:22px 0 0}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary-2)}
.crumb span.sep{opacity:.5}

/* ============ Hero ============ */
.cat-hero{
  position:relative;z-index:2;overflow:hidden;
  min-height:380px;padding:52px 0 64px;
  border-bottom:1px solid var(--c-line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(7,12,24,.72),rgba(7,12,24,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(242,160,61,.7),transparent);
}
.cat-hero .shell{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:5px 14px;border-radius:999px;border:1px solid rgba(31,182,166,.35);
  background:rgba(31,182,166,.08);color:var(--c-primary-2);
  font-size:13px;letter-spacing:.04em;
}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,54px);line-height:1.22;margin:20px 0 0;max-width:900px;
}
.cat-hero h1 .h1-accent{
  background:linear-gradient(120deg,var(--c-primary-2),var(--c-accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{color:var(--c-ink-2);font-size:17px;line-height:1.8;margin-top:18px;max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;font-size:13px;color:var(--c-ink-2);
  border:1px solid var(--c-line);background:rgba(255,255,255,.03);
  transition:color var(--t),border-color var(--t),transform var(--t);
}
.hero-tag:hover{color:var(--c-ink);border-color:rgba(46,211,192,.45);transform:translateY(-2px)}
.hero-tag i{width:5px;height:5px;border-radius:50%;background:var(--c-primary);display:inline-block}

/* ============ 数据卡带 ============ */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
  position:relative;padding:26px 24px;border-radius:var(--r-card);
  background:var(--c-panel-solid);border:1px solid var(--c-line);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform var(--t),border-color var(--t);
}
.stat-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--c-primary),transparent 70%);
}
.stat-card:hover{transform:translateY(-4px);border-color:var(--c-line-strong)}
.stat-num{font-family:var(--font-mono);font-size:clamp(28px,3vw,38px);font-weight:700;color:var(--c-ink);line-height:1.1}
.stat-num span{font-size:16px;color:var(--c-primary-2);margin-left:4px}
.stat-label{margin-top:10px;font-size:14px;color:var(--c-ink-2)}
.stat-note{margin-top:6px;font-size:13px;color:var(--c-ink-3);font-family:var(--font-mono)}

/* ============ 不等高卡片矩阵 ============ */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:92px;gap:20px}
.mx-card{
  position:relative;display:flex;flex-direction:column;
  grid-row:span 3;border-radius:var(--r-card);overflow:hidden;
  background:rgba(17,28,49,.86);border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.mx-card:hover{transform:translateY(-4px);border-color:var(--c-line-strong);box-shadow:var(--sh-2)}
.mx-card.tall{grid-row:span 4}
.mx-card.low{grid-row:span 2}
.mx-media{position:relative;overflow:hidden;height:148px;flex:none}
.mx-card.tall .mx-media{height:214px}
.mx-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.mx-card:hover .mx-media img{transform:scale(1.04)}
.mx-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,24,.05) 40%,rgba(7,12,24,.92) 100%);
}
.mx-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;min-height:0}
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;align-self:flex-start;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  color:var(--c-primary-2);border:1px solid rgba(46,211,192,.32);background:rgba(31,182,166,.08);
}
.badge-warm{color:var(--c-accent-2);border-color:rgba(242,160,61,.35);background:rgba(242,160,61,.09)}
.mx-body h3{font-size:19px;line-height:1.4}
.mx-body p{font-size:14px;color:var(--c-ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.mx-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--c-line)}
.mx-foot .mono{font-size:12px;color:var(--c-ink-3)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary-2);font-weight:500}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:hover{color:var(--c-accent-2)}
.mx-card.low .mx-body{justify-content:center;padding:24px}
.mx-card.low h3{font-size:18px}
.mx-card.low p{-webkit-line-clamp:2}

/* ============ 标签云 ============ */
.tagcloud-wrap{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:44px 0}
.tag-group{display:grid;grid-template-columns:210px 1fr;gap:22px;align-items:start;padding:20px 0;border-top:1px dashed var(--c-line)}
.tag-group:first-child{border-top:0;padding-top:0}
.tag-group h3{font-size:15px;color:var(--c-ink);display:flex;align-items:center;gap:9px}
.tag-group h3 em{font-style:normal;font-family:var(--font-mono);font-size:12px;color:var(--c-accent)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:13px;
  color:var(--c-ink-2);border:1px solid var(--c-line);background:rgba(255,255,255,.025);
  transition:color var(--t),border-color var(--t),background var(--t),transform var(--t);
}
.tag-item:hover{color:var(--c-ink);border-color:rgba(46,211,192,.45);background:rgba(31,182,166,.08);transform:translateY(-2px)}
.tag-item strong{font-weight:600;color:var(--c-ink)}
.tag-item.lv1{font-size:14px;padding:9px 18px}
.tag-item.lv2{font-size:12px;color:var(--c-ink-3)}

/* ============ 交付节点 ============ */
.node-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.node{position:relative;padding:0 22px 0 0}
.node-line{position:absolute;top:15px;left:0;right:0;height:1px;background:var(--c-line)}
.node-dot{
  position:relative;z-index:2;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-bg-1);border:1px solid var(--c-line-strong);
  font-family:var(--font-mono);font-size:12px;color:var(--c-ink-2);
  transition:border-color var(--t),color var(--t),box-shadow var(--t);
}
.node:hover .node-dot{border-color:var(--c-accent);color:var(--c-accent-2);box-shadow:0 0 0 6px rgba(242,160,61,.1)}
.node h3{font-size:18px;margin:20px 0 8px}
.node p{font-size:14px;color:var(--c-ink-2);line-height:1.75;max-width:280px}
.node-meta{margin-top:14px;font-family:var(--font-mono);font-size:12px;color:var(--c-ink-3)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{position:relative;border-bottom:1px solid var(--c-line);padding-left:0;transition:padding-left var(--t),background var(--t)}
.faq-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;
  background:var(--c-accent);opacity:0;transition:opacity var(--t);
}
.faq-item[open]{padding-left:20px;background:rgba(255,255,255,.014)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;
  padding:22px 4px 22px 0;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-num{font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3);flex:none}
.faq-q{flex:1;font-size:17px;font-weight:600;color:var(--c-ink)}
.faq-icon{flex:none;width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink-3)}
.faq-icon svg{transition:transform var(--t),color var(--t)}
.faq-item[open] .faq-icon svg{transform:rotate(45deg);color:var(--c-accent)}
.faq-a{padding:0 44px 26px 37px;color:var(--c-ink-2);font-size:15px;line-height:1.85;max-width:900px}

/* ============ CTA ============ */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:linear-gradient(160deg,rgba(19,32,54,.92),rgba(11,21,38,.92));
  box-shadow:var(--sh-2);
  padding:clamp(28px,4vw,52px);
}
.cta-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(70% 90% at 92% 4%,rgba(242,160,61,.16),transparent 62%),
    radial-gradient(60% 80% at 4% 96%,rgba(31,182,166,.14),transparent 60%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.cta-inner h2{font-size:clamp(23px,2.6vw,32px);margin-top:14px}
.cta-inner .sec-desc{font-size:15px;margin-top:14px}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-ink-2)}
.cta-points svg{flex:none;margin-top:5px;color:var(--c-primary-2)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--c-ink-2)}
.field input,.field select{
  width:100%;height:46px;border-radius:var(--r-in);
  background:rgba(7,12,24,.6);border:1px solid var(--c-line);
  padding:0 14px;font-size:14px;color:var(--c-ink);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--c-ink-3) 50%),linear-gradient(135deg,var(--c-ink-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(242,160,61,.14)}
.form-tip{grid-column:1 / -1;font-size:13px;color:var(--c-ink-3);border-left:2px solid var(--c-primary);padding-left:12px;line-height:1.7}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  background:transparent;border:1px solid rgba(255,255,255,.2);color:var(--c-ink);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.btn-ghost:hover{border-color:var(--c-primary-2);color:var(--c-primary-2);transform:translateY(-1px)}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;border:1px solid rgba(255,196,107,.5);
  background:linear-gradient(135deg,var(--c-accent),var(--c-accent-2));
  color:#14100A;font-size:14px;font-weight:700;cursor:pointer;
  box-shadow:0 10px 28px rgba(242,160,61,.26);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-main:hover{color:#14100A;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 16px 38px rgba(242,160,61,.36)}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:4px}

/* ============ 页脚 ============ */
.site-foot{position:relative;z-index:2;margin-top:var(--sp-section);border-top:1px solid var(--c-line);background:rgba(5,9,15,.66);padding:56px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{color:var(--c-ink-2);font-size:14px;line-height:1.8;max-width:320px;margin-bottom:16px}
.foot-col h4{font-size:15px;color:var(--c-ink);margin-bottom:16px}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:var(--c-ink-2);display:inline-block;transition:color var(--t),transform var(--t)}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(2px)}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--c-ink-3)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .shell{max-width:1060px}
  .nav-links{gap:22px}
  .matrix{grid-template-columns:repeat(2,1fr)}
  .node-track{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .node-line{display:none}
}
@media (max-width:991px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(84vw,340px);
    flex-direction:column;align-items:stretch;gap:0;padding:92px 24px 32px;
    background:rgba(11,21,38,.97);backdrop-filter:blur(14px);
    border-left:1px solid var(--c-line);z-index:90;
    transform:translateX(102%);transition:transform .3s var(--ease);
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-link-x{height:56px;font-size:18px;font-weight:500;color:var(--c-ink);border-bottom:1px solid var(--c-line);justify-content:flex-start}
  .nav-link-x::after{display:none}
  .menu-btn{display:inline-flex}
  .nav-drawer-cta{display:flex;margin-top:26px}
  .nav-drawer-cta .btn-pill{width:100%}
  .head-cta{display:none}
  #navMask{position:fixed;inset:0;background:rgba(3,6,12,.6);opacity:0;pointer-events:none;transition:opacity var(--t);z-index:85}
  body.nav-open #navMask{opacity:1;pointer-events:auto}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  .shell{padding:0 18px}
  .stat-band{grid-template-columns:1fr 1fr}
  .matrix{grid-template-columns:1fr;grid-auto-rows:auto}
  .mx-card,.mx-card.tall,.mx-card.low{grid-row:auto}
  .mx-media,.mx-card.tall .mx-media{height:180px}
  .node-track{grid-template-columns:1fr;gap:30px}
  .tag-group{grid-template-columns:1fr;gap:12px}
  .cat-hero{min-height:auto;padding:32px 0 52px}
  .hero-lead{font-size:16px}
  .sec-head{margin-bottom:28px}
  .faq-a{padding:0 12px 24px 30px}
}
@media (max-width:575px){
  .stat-band{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-actions{flex-direction:column;align-items:stretch}
  .form-actions .btn-main,.form-actions .btn-ghost{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .hero-tags{gap:8px}
  .faq-item summary{gap:12px;padding:18px 0}
  .faq-q{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category5 */
:root{
  --c-bg-0:#070C18;
  --c-bg-1:#0B1526;
  --c-panel:rgba(19,32,54,.72);
  --c-panel-solid:#111C31;
  --c-line:rgba(255,255,255,.09);
  --c-line-2:rgba(255,255,255,.18);
  --c-primary:#1FB6A6;
  --c-primary-2:#2ED3C0;
  --c-accent:#F2A03D;
  --c-accent-2:#FFC46B;
  --c-ink:#E9EFF8;
  --c-ink-2:#A8B6CC;
  --c-ink-3:#6E7E96;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --r-card:18px;
  --r-lg:22px;
  --r-input:12px;
  --sh-1:0 10px 30px rgba(2,7,18,.45);
  --sh-2:0 24px 60px rgba(2,7,18,.6);
  --sh-glow:0 12px 32px rgba(242,160,61,.28);
  --sp-section:clamp(64px,8vw,112px);
  --ease:cubic-bezier(.32,.72,0,1);
  --t:.25s cubic-bezier(.32,.72,0,1);
  --bs-primary:#1FB6A6;
  --bs-body-bg:#070C18;
  --bs-body-color:#E9EFF8;
  --bs-border-color:rgba(255,255,255,.09);
  --bs-link-color:#2ED3C0;
  --bs-link-hover-color:#F2A03D;
  --bs-font-sans-serif:var(--font-sans);
  --bs-body-font-family:var(--font-sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background-color:var(--c-bg-0);
  background-image:
    radial-gradient(1100px 560px at 50% -8%, rgba(31,182,166,.10), transparent 62%),
    radial-gradient(760px 520px at 100% 8%, rgba(242,160,61,.06), transparent 60%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-primary-2);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-accent-2)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,24,.72);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background var(--t),border-color var(--t);
}
.head-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;transition:height var(--t);
}
.site-head.is-scrolled .head-inner{height:64px}
.site-head.is-scrolled{background:rgba(7,12,24,.9)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:30px;height:30px;color:var(--c-primary-2);flex:0 0 auto}
.brand-name{font-size:17px;font-weight:700;line-height:1.2}
.brand-name em{font-style:normal;color:var(--c-primary-2)}
.site-foot .brand-name{font-size:16px}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link-x{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:500;color:var(--c-ink-2);padding:6px 0;
  transition:color var(--t);
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:linear-gradient(90deg,var(--c-primary-2),var(--c-accent));
  transition:width var(--t);
}
.nav-link-x:hover{color:var(--c-ink)}
.nav-link-x:hover::after{width:100%}
.nav-link-x.active{color:var(--c-ink)}
.nav-pill-dot{
  width:5px;height:5px;border-radius:50%;background:var(--c-accent);
  opacity:0;transform:scale(.6);transition:opacity var(--t),transform var(--t);
}
.nav-link-x.active .nav-pill-dot{opacity:1;transform:scale(1)}
.head-right{display:flex;align-items:center;gap:10px}
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  font-size:14px;font-weight:600;
  background:linear-gradient(120deg,var(--c-accent),var(--c-accent-2));
  color:#0A1120;border:0;box-shadow:var(--sh-glow);
  transition:transform var(--t),filter var(--t),box-shadow var(--t);
}
.btn-pill:hover{color:#0A1120;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 16px 40px rgba(242,160,61,.34)}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--c-line-2);color:var(--c-ink-2);
  transition:color var(--t),border-color var(--t),background var(--t);
}
.icon-btn:hover{color:var(--c-primary-2);border-color:var(--c-primary);background:rgba(31,182,166,.08)}
.menu-btn{display:none}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,12,24,.82) 0%,rgba(7,12,24,.9) 55%,rgba(7,12,24,.97) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;left:0;bottom:0;width:min(540px,62%);height:1px;
  background:linear-gradient(90deg,var(--c-accent),rgba(242,160,61,0));
}
.page-hero-inner{position:relative;z-index:2;padding:132px 24px 46px;min-height:360px;display:flex;flex-direction:column;justify-content:flex-end}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:18px}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary-2)}
.crumb span.sep{color:rgba(255,255,255,.22)}
.page-hero h1{font-size:clamp(30px,4.2vw,54px);line-height:1.22;max-width:22ch}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--c-ink-2);max-width:44ch}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-ink-2);padding:7px 14px;border-radius:999px;
  border:1px solid var(--c-line);background:rgba(255,255,255,.03);
  transition:color var(--t),border-color var(--t),background var(--t);
}
.chip:hover{color:var(--c-ink);border-color:rgba(31,182,166,.5);background:rgba(31,182,166,.08)}
.chip .mono{color:var(--c-primary-2);font-size:12px}

/* ---------- sections ---------- */
.sec{padding:var(--sp-section) 0;position:relative}
.sec + .sec{border-top:1px solid var(--c-line)}
.sec-alt{background:linear-gradient(180deg,rgba(11,21,38,.55),rgba(7,12,24,0))}
.sec-head{
  display:flex;gap:20px;align-items:flex-start;
  border-top:1px solid var(--c-line);padding-top:26px;margin-bottom:42px;
}
.sec-num{
  flex:0 0 auto;font-size:12px;color:var(--c-accent);
  border:1px solid rgba(242,160,61,.35);border-radius:999px;padding:4px 11px;line-height:1.5;
}
.sec-title{font-size:clamp(23px,2.6vw,34px);line-height:1.28}
.sec-lead{margin-top:12px;color:var(--c-ink-2);font-size:16px;max-width:52ch}

/* ---------- stats ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
  background:var(--c-panel-solid);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:border-color var(--t),transform var(--t);
}
.stat-card:hover{border-color:var(--c-line-2);transform:translateY(-4px)}
.stat-num{font-family:var(--font-mono);font-size:clamp(26px,3vw,36px);font-weight:600;color:var(--c-ink);line-height:1.1}
.stat-num em{font-style:normal;font-size:15px;color:var(--c-primary-2);margin-left:5px}
.stat-label{margin-top:14px;padding-top:12px;border-top:1px solid var(--c-line);font-size:14px;color:var(--c-ink-2)}

/* ---------- cards ---------- */
.wh-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:26px}
.wh-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-panel-solid);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform var(--t),border-color var(--t);
}
.wh-card:hover{transform:translateY(-4px);border-color:var(--c-line-2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--c-line)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.wh-card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:30%;background:linear-gradient(180deg,rgba(7,12,24,0),rgba(7,12,24,.85))}
.card-badge{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-size:12px;color:var(--c-primary-2);border:1px solid rgba(31,182,166,.45);
  background:rgba(7,12,24,.7);border-radius:999px;padding:4px 11px;
}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:19px;line-height:1.4;font-weight:600}
.card-text{font-size:15px;line-height:1.8;color:var(--c-ink-2)}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-ink-3);
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary-2);font-weight:500}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(4px)}
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  font-size:12.5px;color:var(--c-ink-2);border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);border-radius:999px;padding:6px 13px;
}

/* ---------- compare table ---------- */
.table-wrap{
  border:1px solid var(--c-line);border-radius:var(--r-lg);background:var(--c-panel-solid);
  box-shadow:var(--sh-1);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.cmp-table{width:100%;min-width:780px;border-collapse:collapse}
.cmp-table th,.cmp-table td{
  padding:18px 22px;text-align:left;font-size:15px;line-height:1.7;
  color:var(--c-ink-2);border-bottom:1px solid var(--c-line);vertical-align:top;
}
.cmp-table thead th{
  font-size:14px;font-weight:600;color:var(--c-ink);
  border-bottom:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.02);
  white-space:nowrap;
}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr{transition:background var(--t)}
.cmp-table tbody tr:hover{background:rgba(31,182,166,.06)}
.cmp-table td:first-child{color:var(--c-ink);font-weight:500;white-space:nowrap}
.cmp-table .mark{color:var(--c-primary-2);font-family:var(--font-mono);font-size:13.5px}
.table-note{margin-top:16px;font-size:14px;color:var(--c-ink-3)}

/* ---------- track ---------- */
.track{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.track-line{
  position:absolute;top:7px;left:12%;right:12%;height:1px;
  background:linear-gradient(90deg,rgba(31,182,166,.55),rgba(242,160,61,.6));
}
.node{position:relative;text-align:center;padding:0 6px}
.node-dot{
  width:14px;height:14px;border-radius:50%;margin:0 auto 22px;
  background:var(--c-bg-0);border:2px solid var(--c-primary);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.node:hover .node-dot{border-color:var(--c-accent);box-shadow:0 0 0 7px rgba(242,160,61,.13);transform:scale(1.05)}
.node-num{font-family:var(--font-mono);font-size:12px;color:var(--c-ink-3);letter-spacing:.06em}
.node-title{font-size:18px;font-weight:600;margin-top:8px}
.node-text{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--c-ink-2)}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--c-line);max-width:960px}
.faq-item{position:relative;border-bottom:1px solid var(--c-line)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;width:2px;height:0;background:var(--c-accent);
  transition:height var(--t);
}
.faq-item.open::before{height:100%}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;gap:20px;padding:24px 8px 24px 22px;
  color:var(--c-ink);font-size:17px;font-weight:600;line-height:1.5;
  transition:color var(--t);
}
.faq-q:hover{color:#fff}
.faq-num{font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3);flex:0 0 auto}
.faq-title{flex:1}
.faq-ico{flex:0 0 auto;display:inline-flex;color:var(--c-ink-3);transition:transform var(--t),color var(--t)}
.faq-item.open .faq-ico{transform:rotate(45deg);color:var(--c-accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a p{padding:0 22px 26px 78px;font-size:15px;line-height:1.8;color:var(--c-ink-2);max-width:76ch}

/* ---------- cta ---------- */
.cta-band{padding:var(--sp-section) 0}
.cta-card{
  position:relative;overflow:hidden;
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(19,32,54,.92),rgba(11,21,38,.78));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-2);padding:clamp(28px,4vw,56px);
}
.cta-card::after{
  content:"";position:absolute;right:-140px;top:-140px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(242,160,61,.16),transparent 65%);
  pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:start}
.cta-card h2{font-size:clamp(23px,2.6vw,34px);line-height:1.28}
.cta-card .cta-lead{margin-top:14px;color:var(--c-ink-2);font-size:16px;line-height:1.8;max-width:40ch}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.cta-list li{display:flex;gap:12px;font-size:15px;color:var(--c-ink-2);align-items:flex-start}
.cta-list svg{flex:0 0 auto;margin-top:5px;color:var(--c-primary-2)}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--c-ink-2)}
.field-input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-input);
  background:rgba(7,12,24,.66);border:1px solid var(--c-line);color:var(--c-ink);
  font-size:15px;font-family:inherit;transition:border-color var(--t),box-shadow var(--t);
}
.field-input::placeholder{color:var(--c-ink-3)}
.field-input:focus{
  outline:none;border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(242,160,61,.16);
}
select.field-input{
  appearance:none;-webkit-appearance:none;padding-right:42px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A8B6CC' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  grid-column:1 / -1;height:50px;padding:0 28px;border:0;border-radius:999px;cursor:pointer;
  background:linear-gradient(120deg,var(--c-accent),var(--c-accent-2));color:#0A1120;
  font-size:15px;font-weight:600;box-shadow:var(--sh-glow);
  transition:transform var(--t),filter var(--t),box-shadow var(--t);
}
.btn-main:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 18px 42px rgba(242,160,61,.36)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:50px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  background:transparent;border:1px solid var(--c-line-2);color:var(--c-ink);
  transition:border-color var(--t),color var(--t),background var(--t);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-2);background:rgba(31,182,166,.08)}
.form-msg{
  grid-column:1 / -1;font-size:14px;color:var(--c-primary-2);
  border-left:2px solid var(--c-primary);padding:8px 0 8px 12px;min-height:0;
}
.form-msg:empty{display:none}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--c-line);background:rgba(7,12,24,.78);padding:clamp(48px,6vw,76px) 0 26px;margin-top:8px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.foot-brand p{margin-top:16px;font-size:14.5px;line-height:1.8;color:var(--c-ink-2);max-width:34ch}
.foot-brand .badge-soft{margin-top:18px}
.foot-col h4{font-size:15px;font-weight:600;margin-bottom:18px}
.foot-col li + li{margin-top:12px}
.foot-col a{font-size:14px;color:var(--c-ink-2);display:inline-block;transition:color var(--t),transform var(--t)}
.foot-col a:hover{color:var(--c-primary-2);transform:translateX(2px)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  font-size:13px;color:var(--c-ink-3);
}
.foot-bottom .mono{font-size:12.5px}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .wh-grid{grid-template-columns:repeat(2,1fr)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .menu-btn{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(86vw,360px);
    flex-direction:column;align-items:stretch;gap:0;
    padding:92px 24px 32px;
    background:rgba(9,17,31,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-left:1px solid var(--c-line);box-shadow:var(--sh-2);
    transform:translateX(102%);transition:transform .32s var(--ease);z-index:90;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link-x{width:100%;height:56px;font-size:18px;border-bottom:1px solid var(--c-line);gap:12px}
  .nav-link-x::after{display:none}
  .cta-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .page-hero-inner{padding-top:112px;padding-bottom:38px;min-height:320px}
  .hero-sub{font-size:16px}
  .sec-head{flex-direction:column;gap:14px;margin-bottom:32px}
  .wh-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr 1fr;gap:14px}
  .track{grid-template-columns:1fr;gap:0}
  .track-line{left:7px;right:auto;top:14px;bottom:14px;width:1px;height:auto;background:linear-gradient(180deg,rgba(31,182,166,.55),rgba(242,160,61,.6))}
  .node{display:grid;grid-template-columns:14px 1fr;gap:18px;text-align:left;padding:18px 0;border-bottom:1px solid var(--c-line)}
  .node-dot{margin:8px 0 0;justify-self:start}
  .node-body{padding-bottom:4px}
  .node-title{margin-top:2px}
  .faq-a p{padding-left:22px}
  .lead-form{grid-template-columns:1fr}
}
@media (max-width:575.98px){
  .shell{padding:0 18px}
  .head-cta{display:none}
  .stat-row{grid-template-columns:1fr}
  .btn-main,.btn-ghost{width:100%}
  .anchor-row{gap:8px}
  .chip{font-size:12.5px;padding:6px 12px}
  .foot-grid{grid-template-columns:1fr}
  .cmp-table th,.cmp-table td{padding:15px 16px;font-size:14px}
}
@media (min-width:1400px){
  .shell{max-width:1320px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}