/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --c-primary:#2CE0C8;
  --c-primary-600:#17B49F;
  --c-second:#4D7BFF;
  --c-warm:#FFB454;
  --t-1:#EAF2FF;
  --t-2:#A8B7CE;
  --t-3:#6C7C96;
  --line:rgba(140,190,255,.10);
  --line-strong:rgba(140,200,255,.16);
  --glass:linear-gradient(160deg,rgba(44,224,200,.06),rgba(255,255,255,.02));
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(3,8,20,.55);
  --sh-glow:0 0 24px rgba(44,224,200,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:24px;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t-1);
  --bs-primary:#2CE0C8;
  --bs-primary-rgb:44,224,200;
  --bs-border-color:rgba(140,190,255,.10);
  --bs-link-color:#8FB2FF;
  --bs-link-hover-color:#2CE0C8;
  --bs-border-radius:12px;
  --bs-border-radius-lg:18px;
  --bs-border-radius-sm:8px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 8% -6%,rgba(44,224,200,.13),transparent 62%),
    radial-gradient(720px 480px at 96% 12%,rgba(77,123,255,.12),transparent 60%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.4;
  background-image:linear-gradient(rgba(140,190,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;height:auto;display:block}
a{color:#8FB2FF;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:700;letter-spacing:-.2px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.container{max-width:1240px;padding-left:20px;padding-right:20px;position:relative;z-index:1}
.mono{font-family:"DIN Alternate","SF Mono",ui-monospace,monospace;letter-spacing:.02em}
.section{padding:88px 0;position:relative;z-index:1}
.section-alt{background:linear-gradient(180deg,rgba(10,18,32,0) 0%,rgba(10,18,32,.85) 22%,rgba(10,18,32,.85) 78%,rgba(10,18,32,0) 100%)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(44,224,200,.08);
  border:1px solid rgba(44,224,200,.25);
  color:var(--c-primary);
  font-size:13px;line-height:1.6;font-weight:600;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-warm);box-shadow:0 0 10px rgba(255,180,84,.8)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px}
.sec-head h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28}
.sec-head p{color:var(--t-2);font-size:15px;margin:10px 0 0;max-width:620px}
.sec-label{
  font-size:13px;color:var(--c-second);font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  display:block;margin-bottom:12px;
}
.card-glass{
  background:var(--glass);
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card-glass:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(44,224,200,.32)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--r-md);border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-main{background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-600) 100%);color:#04201C;box-shadow:var(--sh-glow)}
.btn-main:hover{color:#04201C;transform:translateY(-1px);box-shadow:0 0 32px rgba(44,224,200,.4)}
.btn-ghost{background:transparent;border-color:rgba(140,200,255,.28);color:var(--t-1)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(44,224,200,.06)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-sm)}
.badge-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.7;
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);color:var(--t-2)}
.badge-cat{border-color:rgba(77,123,255,.4);color:#9DB6FF;background:rgba(77,123,255,.1)}
.badge-hot{border-color:rgba(255,180,84,.45);color:var(--c-warm);background:rgba(255,180,84,.1)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;height:68px;
  display:flex;align-items:center;
  background:rgba(5,8,15,.72);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(6,11,22,.9);
  border-bottom-color:var(--line-strong);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--t-1);font-size:17px;letter-spacing:-.2px;white-space:nowrap}
.brand:hover{color:var(--t-1)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-second));
  display:flex;align-items:center;justify-content:center;
  color:#04201C;font-weight:800;font-size:15px;box-shadow:var(--sh-glow);
}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{
  padding:9px 14px;border-radius:var(--r-sm);color:var(--t-2);font-size:15px;font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.nav-main a.active{color:var(--c-primary);background:rgba(44,224,200,.1)}
.header-actions{display:flex;align-items:center;gap:14px}
.header-link{color:var(--t-2);font-size:14px}
.header-link:hover{color:var(--c-primary)}
@media (max-width:991.98px){
  .nav-main{display:none}
  .header-actions .header-link{display:none}
  body{padding-bottom:74px}
}

/* ---------- hero ---------- */
.hero{padding:128px 0 72px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:96px;
  background:linear-gradient(180deg,rgba(5,8,15,0) 0%,var(--bg-0) 100%);pointer-events:none;
}
.hero h1{font-size:clamp(28px,4.2vw,50px);line-height:1.18;font-weight:700;letter-spacing:-.5px;margin:18px 0 18px}
.hero-sub{color:var(--t-2);font-size:16.5px;max-width:560px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.metrics{display:flex;flex-wrap:wrap;gap:14px}
.metric{
  flex:1 1 130px;min-width:120px;padding:16px 18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
}
.metric b{display:block;font-size:26px;line-height:1.15;color:var(--c-primary);font-family:"DIN Alternate","SF Mono",ui-monospace,monospace}
.metric span{font-size:12.5px;color:var(--t-3);display:block;margin-top:4px}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--sh-2)}
.hero-visual img{width:100%;height:420px;object-fit:cover;filter:saturate(112%)}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.1) 0%,rgba(5,8,15,.82) 100%)}
.status-bar{
  position:absolute;top:16px;left:16px;right:16px;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--r-pill);
  background:rgba(7,13,24,.72);border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  font-size:12.5px;color:var(--t-2);
}
.status-bar .live{width:7px;height:7px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px var(--c-primary)}
.hero-note{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
  font-size:13px;color:var(--t-2);
}
.hero-note strong{color:var(--t-1);display:block;font-size:15px;margin-bottom:2px}

/* ---------- pain ---------- */
.pain-title h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28;margin-bottom:14px}
.pain-title p{color:var(--t-2);font-size:15px}
.pain-list{display:flex;flex-direction:column}
.pain-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.pain-item:first-child{padding-top:0}
.pain-item:last-child{border-bottom:0;padding-bottom:0}
.pain-num{
  font-family:"DIN Alternate","SF Mono",ui-monospace,monospace;font-size:15px;color:var(--c-primary);
  flex:0 0 42px;padding-top:2px;border-right:1px solid var(--line);margin-right:2px;
}
.pain-body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.pain-body p{color:var(--t-2);font-size:14.5px;margin:0}
.pain-body .impact{display:inline-flex;align-items:center;gap:6px;margin-top:8px;font-size:12.5px;color:var(--c-warm)}
.pain-body .impact::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-warm)}

/* ---------- solution ---------- */
.sol-card{padding:0;overflow:hidden}
.sol-card img{width:100%;height:250px;object-fit:cover}
.sol-card-body{padding:26px 28px 28px}
.sol-card-body h3{font-size:20px;margin-bottom:12px}
.sol-card-body p{color:var(--t-2);font-size:15px}
.check-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;color:var(--t-2);font-size:14.5px}
.check-list li::before{
  content:"";flex:0 0 18px;height:18px;margin-top:5px;border-radius:6px;
  background:rgba(44,224,200,.14);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232CE0C8'%3E%3Cpath d='M6.3 11.7 3 8.4l1.1-1.1 2.2 2.2 5.6-5.6L13 5z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:13px;
}
.cap-bar{display:flex;flex-direction:column;gap:14px}
.cap-item{display:flex;gap:14px;padding:18px;border-radius:var(--r-md);background:rgba(255,255,255,.03);border:1px solid var(--line);transition:border-color .2s var(--ease),background .2s var(--ease)}
.cap-item:hover{border-color:rgba(44,224,200,.3);background:rgba(44,224,200,.05)}
.cap-ico{width:40px;height:40px;flex:0 0 40px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;background:rgba(77,123,255,.14);border:1px solid rgba(77,123,255,.28);color:#9DB6FF}
.cap-item h4{font-size:16px;margin-bottom:4px}
.cap-item p{font-size:13.5px;color:var(--t-2);margin:0;line-height:1.72}

/* ---------- results ---------- */
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.res-block{padding:24px;border-radius:var(--r-lg);background:var(--bg-2);border:1px solid var(--line);text-align:left}
.res-block b{display:block;font-size:32px;line-height:1.1;color:var(--c-primary);font-family:"DIN Alternate","SF Mono",ui-monospace,monospace}
.res-block span{display:block;color:var(--t-2);font-size:14px;margin-top:8px}
.compare{margin-top:32px;padding:24px;border-radius:var(--r-lg);background:rgba(255,255,255,.03);border:1px solid var(--line)}
.compare-row{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.compare-row:last-child{margin-bottom:0}
.compare-row .lab{flex:0 0 108px;font-size:13.5px;color:var(--t-2)}
.track{flex:1;height:10px;border-radius:var(--r-pill);background:rgba(255,255,255,.06);overflow:hidden}
.track i{display:block;height:100%;border-radius:var(--r-pill)}
.track .fill-a{width:88%;background:linear-gradient(90deg,var(--c-primary),#5cf0dd)}
.track .fill-b{width:34%;background:linear-gradient(90deg,rgba(140,190,255,.3),rgba(140,190,255,.12))}
.compare-row .val{flex:0 0 52px;text-align:right;font-size:13.5px;color:var(--t-1);font-family:"DIN Alternate","SF Mono",ui-monospace,monospace}

/* ---------- voices ---------- */
.voice-col{display:flex;flex-direction:column;gap:20px}
.voice-col.offset{margin-top:42px}
.voice{padding:24px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line-strong);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;flex:0 0 44px;border-radius:var(--r-pill);background:linear-gradient(140deg,rgba(44,224,200,.35),rgba(77,123,255,.35));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#DDFBF5}
.voice-top h4{font-size:15px;margin-bottom:2px}
.voice-top span{font-size:12.5px;color:var(--t-3)}
.stars{color:var(--c-warm);font-size:13px;letter-spacing:2px;margin-bottom:8px}
.voice p{color:var(--t-2);font-size:14.5px;margin:0}

/* ---------- news ---------- */
.news-list{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start}
.news-feature{overflow:hidden;display:flex;flex-direction:column}
.news-feature .thumb{position:relative}
.news-feature img{width:100%;height:250px;object-fit:cover}
.news-feature .thumb .badge-pill{position:absolute;top:14px;right:14px;background:rgba(7,13,24,.8)}
.news-feature .body{padding:24px 26px 26px}
.news-feature h3{font-size:20px;line-height:1.45;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature h3 a{color:var(--t-1)}
.news-feature h3 a:hover{color:var(--c-primary)}
.news-feature p{color:var(--t-2);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--t-3);margin-top:16px}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--t-3)}
.news-mini{display:flex;flex-direction:column}
.mini-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);align-items:center;transition:background .2s var(--ease)}
.mini-item:first-child{padding-top:0}
.mini-item:last-child{border-bottom:0;padding-bottom:0}
.mini-item:hover{background:rgba(44,224,200,.04)}
.mini-item img{width:88px;height:64px;flex:0 0 88px;border-radius:var(--r-sm);object-fit:cover}
.mini-item h4{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.mini-item h4 a{color:var(--t-1)}
.mini-item h4 a:hover{color:var(--c-primary)}
.mini-meta{font-size:12px;color:var(--t-3);display:flex;gap:10px;align-items:center}
.empty-state{padding:48px 24px;text-align:center;border-radius:var(--r-lg);border:1px dashed var(--line-strong);background:rgba(255,255,255,.02)}
.empty-state svg{opacity:.5;margin-bottom:14px}
.empty-state p{color:var(--t-2);font-size:14.5px;margin-bottom:18px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag-row a{font-size:13px;padding:6px 14px;border-radius:var(--r-pill);border:1px solid var(--line-strong);background:rgba(255,255,255,.03);color:var(--t-2)}
.tag-row a:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ---------- faq ---------- */
.accordion-item{background:var(--glass);border:1px solid var(--line-strong);border-radius:var(--r-lg);margin-bottom:14px;overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:transparent;color:var(--t-1);font-size:16px;font-weight:600;
  padding:20px 24px;box-shadow:none;border:0;gap:12px;
}
.accordion-button::before{content:"";width:16px;height:16px;flex:0 0 16px;border-radius:5px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232CE0C8'%3E%3Cpath d='M8 3v10M3 8h10' stroke='%232CE0C8' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;transition:transform .22s var(--ease)}
.accordion-button::after{display:none}
.accordion-button:not(.collapsed){color:var(--c-primary);background:rgba(44,224,200,.05)}
.accordion-button:not(.collapsed)::before{transform:rotate(45deg)}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:0 24px 22px 52px;color:var(--t-2);font-size:14.8px;line-height:1.85}

/* ---------- form ---------- */
.form-wrap{padding:34px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line-strong);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--t-2);margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--r-md);
  background:rgba(255,255,255,.03);border:1px solid var(--line-strong);color:var(--t-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);outline:none;
}
.field input::placeholder,.field textarea::placeholder{color:var(--t-3)}
.field input:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(44,224,200,.15)}
.field textarea{min-height:110px;resize:vertical}
.form-tip{font-size:12.5px;color:var(--t-3);margin-top:14px}
.form-msg{display:none;margin-top:14px;font-size:14px;color:var(--c-primary)}
.form-msg.show{display:block}

/* ---------- cta band ---------- */
.cta-band{
  padding:52px 0;
  background:linear-gradient(120deg,rgba(44,224,200,.12),rgba(77,123,255,.14));
  border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:12px}
.cta-band p{color:var(--t-2);font-size:15px;margin-bottom:0;max-width:640px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line-strong);padding:56px 0 0;position:relative;z-index:1}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(44,224,200,.5),transparent)}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:14px}
.foot-desc{color:var(--t-2);font-size:14px;max-width:330px}
.foot h4{font-size:15px;margin-bottom:16px}
.foot li{margin-bottom:10px}
.foot li a,.foot li span{color:var(--t-2);font-size:14px}
.foot li a:hover{color:var(--c-primary)}
.foot-bottom{margin-top:44px;border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--t-3)}

/* ---------- mobile tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;display:none;
  height:58px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(6,11,22,.94);border-top:1px solid var(--line-strong);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.tabbar ul{display:flex;height:58px}
.tabbar li{flex:1}
.tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:100%;color:var(--t-3);font-size:11px;position:relative}
.tabbar a svg{width:20px;height:20px}
.tabbar a.active{color:var(--c-primary)}
.tabbar a.active::before{content:"";position:absolute;top:0;left:22%;right:22%;height:2px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(44,224,200,.7)}
@media (max-width:991.98px){.tabbar{display:block}}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .news-list{grid-template-columns:1fr}
}
@media (max-width:991.98px){
  .section{padding:52px 0}
  .hero{padding:104px 0 52px}
  .hero-visual img{height:320px}
  .hero-visual{margin-top:32px}
  .voice-col.offset{margin-top:0}
  .res-grid{grid-template-columns:repeat(2,1fr)}
  .form-wrap{padding:22px}
}
@media (max-width:575.98px){
  .hero h1{font-size:27px}
  .hero-cta .btn{width:100%}
  .metric{flex:1 1 100%}
  .res-grid{grid-template-columns:1fr}
  .compare-row{flex-wrap:wrap}
  .compare-row .lab{flex:0 0 100%}
  .pain-num{flex:0 0 32px}
  .news-feature img{height:190px}
  .accordion-body{padding-left:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.fade-up.in{opacity:1;transform:none}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --c-primary:#2CE0C8;
  --c-primary-600:#17B49F;
  --c-second:#4D7BFF;
  --c-warm:#FFB454;
  --t-1:#EAF2FF;
  --t-2:#A8B7CE;
  --t-3:#6C7C96;
  --line:rgba(140,190,255,.10);
  --line-strong:rgba(140,200,255,.22);
  --glass:linear-gradient(160deg,rgba(44,224,200,.06),rgba(255,255,255,.02));
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(3,8,20,.55);
  --glow:0 0 24px rgba(44,224,200,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","SF Mono",ui-monospace;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t-1);
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:44,224,200;
  --bs-border-color:var(--line);
  --bs-link-color:var(--c-second);
  --bs-link-hover-color:var(--c-primary);
  --bs-border-radius:var(--r-md);
  --bs-border-radius-sm:var(--r-sm);
  --bs-border-radius-lg:var(--r-lg);
  --bs-font-sans-serif: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(--t-1);
  background:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(44,224,200,.10),transparent 62%),
    radial-gradient(760px 460px at 96% 4%,rgba(77,123,255,.10),transparent 60%),
    linear-gradient(rgba(140,190,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,190,255,.04) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-second);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary)}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.2px;color:var(--t-1)}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;height:68px;
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.42));
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,13,24,.92);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(2,6,16,.5);
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--t-1);white-space:nowrap}
.brand:hover{color:var(--t-1)}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  font-size:16px;font-weight:700;color:#04140F;
  background:linear-gradient(140deg,var(--c-primary),var(--c-second));
  box-shadow:0 0 18px rgba(44,224,200,.35);
}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-main a{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--t-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.nav-main a.active{color:var(--c-primary);background:rgba(44,224,200,.10)}
.nav-main a.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--c-primary);
  box-shadow:var(--glow);
}
.header-actions{display:flex;align-items:center;gap:14px}
.header-link{font-size:14px;font-weight:600;color:var(--t-2)}
.header-link:hover{color:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{
  --btn-bg:transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-main{
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-600));
  color:#04140F;box-shadow:0 8px 22px rgba(44,224,200,.24);
}
.btn-main:hover{color:#04140F;transform:translateY(-1px);box-shadow:0 12px 28px rgba(44,224,200,.36),var(--glow)}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--t-1);
}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(44,224,200,.55);transform:translateY(-1px);background:rgba(44,224,200,.06)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}

/* ---------- 通用区块 ---------- */
main{padding-top:68px}
.section{padding:88px 0}
.section-alt{background:linear-gradient(180deg,rgba(10,18,32,.85),rgba(5,8,15,.5));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line-strong);
  font-size:12.5px;font-weight:600;letter-spacing:.4px;color:var(--c-primary);
  backdrop-filter:blur(16px) saturate(140%);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-warm);box-shadow:0 0 10px rgba(255,180,84,.7)}
h2.sec-title{font-size:clamp(22px,2.6vw,34px);line-height:1.28;margin:14px 0 10px}
.sec-sub{color:var(--t-2);font-size:16px;margin:0}
.glass{
  background:var(--glass);
  border:1px solid rgba(140,200,255,.12);
  border-radius:var(--r-lg);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1);
}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);color:var(--t-2);
  backdrop-filter:blur(10px);
}
.badge-blue{border-color:rgba(77,123,255,.45);color:#9DB6FF}
.badge-warm{border-color:rgba(255,180,84,.45);color:var(--c-warm)}
.badge-main{border-color:rgba(44,224,200,.45);color:var(--c-primary)}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t-3)}
.crumb a{color:var(--t-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb span.sep{color:var(--t-3);opacity:.7}

/* ---------- Hero 长横幅 ---------- */
.hero-banner{position:relative;margin-top:22px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--sh-2)}
.hero-banner::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(5,8,15,.94) 8%,rgba(5,8,15,.74) 46%,rgba(5,8,15,.42) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-banner::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:96px;
  background:linear-gradient(180deg,transparent,rgba(5,8,15,.92));
}
.hero-inner{position:relative;z-index:2;padding:64px 56px 60px;max-width:760px}
.hero-inner h1{font-size:clamp(28px,4.2vw,50px);line-height:1.18;letter-spacing:-.5px;margin:18px 0 16px}
.hero-inner h1 em{font-style:normal;color:var(--c-primary)}
.hero-lead{font-size:17px;color:var(--t-2);margin:0 0 28px;max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-strip{
  position:relative;z-index:2;display:flex;gap:10px;flex-wrap:wrap;
  padding:0 56px 34px;
}
.hero-strip .badge-pill{background:rgba(5,8,15,.5)}

/* ---------- 指标 ---------- */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.metric{padding:22px 24px}
.metric .v{font-size:30px;font-weight:700;color:var(--c-primary);font-family:var(--font-num);line-height:1.1}
.metric .v small{font-size:14px;color:var(--t-2);margin-left:4px;font-family:var(--font-sans);font-weight:600}
.metric .l{font-size:13.5px;color:var(--t-3);margin-top:6px}

/* ---------- 双列图文卡 ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.g-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(44,224,200,.05),rgba(255,255,255,.015));
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.g-card:hover{transform:translateY(-2px);border-color:rgba(44,224,200,.4);box-shadow:var(--sh-2)}
.g-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.g-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.g-card:hover .g-media img{transform:scale(1.04)}
.g-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.05),rgba(5,8,15,.62))}
.g-media .badge-pill{position:absolute;top:12px;right:12px;z-index:2;background:rgba(5,8,15,.6)}
.g-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.g-body h3{font-size:19px;line-height:1.5;margin-bottom:10px}
.g-body p{color:var(--t-2);font-size:15px;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.g-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3)}
.g-foot .arrow{color:var(--c-primary);font-weight:700}
.g-points{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{padding:26px 24px;position:relative}
.step .idx{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:#04140F;
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-second));
  margin-bottom:16px;box-shadow:0 0 18px rgba(44,224,200,.28);
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{color:var(--t-2);font-size:14.5px;margin:0}

/* ---------- 问题轴 ---------- */
.axis{border-left:1px solid var(--line-strong);margin-left:10px;padding-left:0}
.axis-item{position:relative;padding:0 0 26px 26px}
.axis-item:last-child{padding-bottom:0}
.axis-item::before{
  content:"";position:absolute;left:-5px;top:9px;width:9px;height:9px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--c-primary);box-shadow:0 0 12px rgba(44,224,200,.5);
}
.axis-item .no{font-family:var(--font-num);font-size:12.5px;color:var(--t-3);letter-spacing:1px}
.axis-item h3{font-size:17px;margin:4px 0 6px}
.axis-item p{color:var(--t-2);font-size:15px;margin:0}
.axis-item .tag{margin-top:10px;display:inline-flex}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.accordion-item{
  background:var(--glass);border:1px solid var(--line-strong) !important;
  border-radius:var(--r-lg) !important;margin-bottom:14px;overflow:hidden;
  backdrop-filter:blur(16px) saturate(140%);
}
.accordion-button{
  background:transparent !important;color:var(--t-1) !important;
  font-size:16px;font-weight:600;padding:20px 24px;box-shadow:none !important;
}
.accordion-button::after{
  background-image:none !important;
  content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--c-primary);
  display:grid;place-items:center;width:22px;height:22px;transition:transform .22s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-button:not(.collapsed){color:var(--c-primary) !important}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(44,224,200,.45) !important;box-shadow:0 0 22px rgba(44,224,200,.12)}
.accordion-body{padding:0 24px 22px;color:var(--t-2);font-size:15px}
.accordion-body p:last-child{margin-bottom:0}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid rgba(44,224,200,.28);
  background:linear-gradient(120deg,rgba(44,224,200,.12),rgba(77,123,255,.10) 55%,rgba(5,8,15,.4));
  padding:52px 56px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,224,200,.22),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:8px}
.cta-inner p{color:var(--t-2);margin:0;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;padding:66px 0 26px;
  background:linear-gradient(180deg,rgba(10,18,32,.6),rgba(5,8,15,.95));
  border-top:1px solid var(--line);
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,224,200,.55),transparent);
}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--t-1);margin-bottom:14px}
.foot-desc{color:var(--t-2);font-size:14.5px;margin:0;max-width:320px}
.foot h4{font-size:15px;margin-bottom:16px;color:var(--t-1)}
.foot ul li{margin-bottom:10px;font-size:14.5px;color:var(--t-2)}
.foot ul li a{color:var(--t-2)}
.foot ul li a:hover{color:var(--c-primary)}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--t-3);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{display:none}
@media (max-width:991.98px){
  .nav-main,.header-link{display:none}
  .header-inner{justify-content:space-between}
  .mobile-tab{
    display:grid;grid-template-columns:repeat(4,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:1040;
    height:calc(58px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(8,13,24,.94);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
  }
  .tab-item{
    position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11px;font-weight:600;color:var(--t-3);
  }
  .tab-item svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}
  .tab-item.active{color:var(--c-primary)}
  .tab-item.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;border-radius:2px;background:var(--c-primary);box-shadow:var(--glow);
  }
  body{padding-bottom:74px}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{padding-left:20px;padding-right:20px}
}
@media (max-width:991.98px){
  .section{padding:60px 0}
  .hero-inner{padding:48px 28px 40px;max-width:100%}
  .hero-strip{padding:0 28px 26px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .site-footer{margin-top:60px;padding-top:52px}
  .cta-band{padding:40px 28px}
}
@media (max-width:767.98px){
  .guide-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr;gap:14px}
  .hero-inner{padding:40px 20px 34px}
  .hero-strip{padding:0 20px 24px}
  .hero-lead{font-size:15.5px}
  .metric .v{font-size:26px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  body{font-size:15.5px}
  .section{padding:52px 0}
  .steps{grid-template-columns:1fr}
  .brand span:last-child{font-size:15px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .hero-cta{width:100%}
  .btn-sm,.header-actions .btn{width:auto}
  .foot-bottom{flex-direction:column}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition:none !important}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --c-primary:#2CE0C8;
  --c-primary-600:#17B49F;
  --c-second:#4D7BFF;
  --c-warm:#FFB454;
  --t-1:#EAF2FF;
  --t-2:#A8B7CE;
  --t-3:#6C7C96;
  --line:rgba(140,190,255,.10);
  --line-strong:rgba(140,200,255,.22);
  --glass:linear-gradient(160deg,rgba(44,224,200,.06),rgba(255,255,255,.02));
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(3,8,20,.55);
  --glow:0 0 24px rgba(44,224,200,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF2FF;
  --bs-primary:#2CE0C8;
  --bs-primary-rgb:44,224,200;
  --bs-border-color:rgba(140,190,255,.10);
  --bs-link-color:#2CE0C8;
  --bs-link-hover-color:#17B49F;
  --bs-border-radius:12px;
  --bs-border-radius-lg:18px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(44,224,200,.10),transparent 60%),
    radial-gradient(760px 480px at 92% 4%,rgba(77,123,255,.12),transparent 62%),
    var(--bg-0);
  color:var(--t-1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-600)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--t-1);letter-spacing:-.2px}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.mono{font-family:"DIN Alternate","SF Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;height:68px;
  display:flex;align-items:center;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,.92);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--t-1);font-weight:700;font-size:17px;white-space:nowrap;letter-spacing:-.3px}
.brand:hover{color:var(--t-1)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-600));
  color:#04211C;font-weight:800;font-size:17px;box-shadow:var(--glow);flex:0 0 auto;
}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-main a{
  position:relative;padding:8px 14px;border-radius:var(--r-pill);
  color:var(--t-2);font-size:15px;font-weight:500;transition:all .2s var(--ease);
}
.nav-main a:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.nav-main a.active{color:var(--c-primary);background:rgba(44,224,200,.10)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:8px}
.header-link{color:var(--t-2);font-size:14px;font-weight:500}
.header-link:hover{color:var(--c-primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-main{background:linear-gradient(140deg,var(--c-primary),var(--c-primary-600));color:#04211C;box-shadow:0 8px 24px rgba(44,224,200,.22)}
.btn-main:hover{color:#04211C;transform:translateY(-1px);box-shadow:0 12px 30px rgba(44,224,200,.34)}
.btn-ghost{border-color:var(--line-strong);color:var(--t-1);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:rgba(44,224,200,.55);color:var(--c-primary);background:rgba(44,224,200,.06)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-pill)}
.btn:focus-visible,a:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;margin-top:68px;padding:72px 0 56px;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(5,8,15,.93) 8%,rgba(5,8,15,.66) 58%,rgba(5,8,15,.88) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-banner::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:96px;
  background:linear-gradient(180deg,transparent,rgba(5,8,15,.96));
}
.banner-inner{position:relative;z-index:2;max-width:880px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:18px}
.crumb a{color:var(--t-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--t-3);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-pill{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line-strong);
  font-size:12px;font-weight:600;color:var(--t-2);letter-spacing:.3px;
}
.badge-pill i{color:var(--c-primary);font-size:11px}
.badge-cat{border-color:rgba(77,123,255,.45);color:#B9CBFF}
.badge-hot{border-color:rgba(255,180,84,.45);color:var(--c-warm)}
h1.article-title{
  font-size:clamp(26px,3.4vw,42px);line-height:1.24;font-weight:700;letter-spacing:-.5px;margin:18px 0 16px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13.5px;color:var(--t-3)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--c-second);font-size:12px}

/* ---------- article layout ---------- */
.section{padding:64px 0}
.article-main{padding:56px 0 8px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:52px;align-items:start}
.article-col{min-width:0}
.paper{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 36px;box-shadow:var(--sh-2);backdrop-filter:blur(16px) saturate(140%);
}
@supports not (backdrop-filter:blur(2px)){.paper{background:var(--bg-2)}}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#D6E1F2}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;font-size:clamp(21px,2.2vw,27px);line-height:1.34;font-weight:700;
  margin:2em 0 .8em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-600));
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;margin:1.7em 0 .7em;color:var(--t-1)}
.article-body h4{font-size:17px;font-weight:600;margin:1.5em 0 .6em;color:var(--t-1)}
.article-body a{border-bottom:1px solid rgba(44,224,200,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body li{margin:.45em 0}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-primary);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--c-primary);border-radius:0 var(--r-md) var(--r-md) 0;
  background:linear-gradient(140deg,rgba(44,224,200,.08),rgba(255,255,255,.02));
  color:var(--t-2);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:1.6em 0;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--t-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{padding:11px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:rgba(44,224,200,.08);color:var(--t-1);font-weight:600}
.article-body code{
  font-family:"DIN Alternate","SF Mono",ui-monospace,monospace;font-size:14px;
  background:rgba(77,123,255,.14);border:1px solid var(--line);border-radius:6px;padding:2px 7px;color:#BBD3FF;
}
.article-body pre{
  background:rgba(3,8,20,.7);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;overflow:auto;margin:1.6em 0;
}
.article-body pre code{background:none;border:none;padding:0;color:#CFE1FF}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
.empty-state{text-align:center;padding:44px 20px;color:var(--t-2)}
.empty-state .glyph{
  width:64px;height:64px;margin:0 auto 20px;border-radius:20px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line-strong);color:var(--c-primary);font-size:24px;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--t-3);margin-bottom:22px}

/* ---------- sidebar ---------- */
.side-col{position:sticky;top:92px;display:grid;gap:20px}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);backdrop-filter:blur(16px) saturate(140%);
}
@supports not (backdrop-filter:blur(2px)){.side-card{background:var(--bg-2)}}
.side-card h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:9px;margin-bottom:16px}
.side-card h3 i{color:var(--c-primary);font-size:13px}
.toc-list{border-left:1px solid var(--line);padding-left:2px}
.toc-list a{
  display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--t-2);border-left:2px solid transparent;
  margin-left:-1px;line-height:1.55;transition:all .2s var(--ease);
}
.toc-list a:hover,.toc-list a.on{color:var(--c-primary);border-left-color:var(--c-primary);background:rgba(44,224,200,.05)}
.toc-list a.lv3{padding-left:28px;font-size:13.2px;color:var(--t-3)}
.side-note{font-size:13px;color:var(--t-3);line-height:1.7}

/* ---------- related ---------- */
.rel-block{margin-top:26px}
.rel-list{display:grid;gap:0}
.rel-item{
  display:flex;gap:16px;align-items:center;padding:16px 4px;border-bottom:1px solid var(--line);
  color:var(--t-1);transition:background .2s var(--ease);
}
.rel-item:last-child{border-bottom:none}
.rel-item:hover{background:rgba(44,224,200,.04);color:var(--t-1)}
.rel-thumb{width:88px;height:64px;border-radius:var(--r-sm);overflow:hidden;flex:0 0 auto;border:1px solid var(--line)}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-txt{min-width:0}
.rel-txt .t{font-size:15.5px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.rel-txt .m{font-size:12.5px;color:var(--t-3);display:flex;gap:12px}
.rel-txt .m em{font-style:normal;color:var(--c-primary)}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.pn{
  padding:18px 20px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.02);
  display:flex;flex-direction:column;gap:6px;color:var(--t-1);
}
.pn:hover{border-color:rgba(44,224,200,.4);color:var(--t-1);transform:translateY(-1px)}
.pn small{font-size:12px;color:var(--t-3);letter-spacing:.5px}
.pn strong{font-size:15px;font-weight:600}
.pn.right{text-align:right}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-lg);margin-bottom:14px;overflow:hidden;
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);transition:border-color .22s var(--ease);
}
@supports not (backdrop-filter:blur(2px)){.faq-item{background:var(--bg-2)}}
.faq-item.on{border-color:rgba(44,224,200,.45)}
.faq-q{
  width:100%;background:none;border:none;text-align:left;cursor:pointer;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--t-1);
  display:flex;align-items:center;gap:14px;
}
.faq-q .plus{
  width:22px;height:22px;flex:0 0 auto;border-radius:7px;display:grid;place-items:center;
  background:rgba(44,224,200,.12);color:var(--c-primary);font-size:12px;transition:transform .22s var(--ease);
}
.faq-item.on .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 24px 20px 60px;margin:0;color:var(--t-2);font-size:15px;line-height:1.8}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:52px 44px;
  background-image:linear-gradient(110deg,rgba(5,8,15,.92),rgba(5,8,15,.6)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;margin-bottom:12px}
.cta-band p{color:var(--t-2);max-width:620px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;margin-top:8px;padding:60px 0 0;
  background:linear-gradient(180deg,rgba(10,18,32,0),var(--bg-1));
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,224,200,.5),transparent);
}
.foot{margin-bottom:8px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:14px}
.foot-desc{color:var(--t-3);font-size:14px;line-height:1.8;max-width:320px}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--t-1)}
.site-footer ul{list-style:none}
.site-footer ul li{margin-bottom:10px}
.site-footer ul a,.site-footer ul span{color:var(--t-3);font-size:14px}
.site-footer ul a:hover{color:var(--c-primary)}
.foot-bottom{
  margin-top:36px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--t-3);
}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;
  height:calc(58px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
  background:rgba(6,11,20,.96);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.mobile-tabbar .tab-inner{display:flex;height:58px}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  color:var(--t-3);font-size:11px;position:relative;transition:color .2s var(--ease);
}
.mobile-tabbar a i{font-size:17px}
.mobile-tabbar a.active{color:var(--c-primary)}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 12px rgba(44,224,200,.7);
}
@media (max-width:991.98px){
  body{padding-bottom:74px}
  .mobile-tabbar{display:block}
  .nav-main{display:none}
  .header-link{display:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .side-col{position:static;order:2}
  .toc-card-mobile{display:block}
}
@media (max-width:991.98px){
  .container{padding:0 18px}
  .page-banner{padding:52px 0 42px}
  .article-main{padding:40px 0 8px}
  .paper{padding:26px 22px}
  .section{padding:52px 0}
  .cta-band{padding:38px 24px;border-radius:18px}
}
@media (max-width:575.98px){
  .container{padding:0 16px}
  .brand{font-size:15.5px}
  .brand-mark{width:30px;height:30px;border-radius:10px;font-size:15px}
  .article-body{font-size:15px;line-height:1.8}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:18px}
  .paper{padding:22px 16px}
  .prev-next{grid-template-columns:1fr}
  .pn.right{text-align:left}
  .rel-thumb{width:76px;height:56px}
  .cta-actions .btn{width:100%}
  .foot-bottom{flex-direction:column}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --c-primary:#2CE0C8;
  --c-primary-600:#17B49F;
  --c-second:#4D7BFF;
  --c-warm:#FFB454;
  --t-1:#EAF2FF;
  --t-2:#A8B7CE;
  --t-3:#6C7C96;
  --line:rgba(140,190,255,.10);
  --line-strong:rgba(140,200,255,.20);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(3,8,20,.55);
  --glow:0 0 24px rgba(44,224,200,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","SF Mono",ui-monospace,monospace;
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF2FF;
  --bs-primary:#2CE0C8;
  --bs-primary-rgb:44,224,200;
  --bs-border-color:rgba(140,190,255,.10);
  --bs-link-color:#A8B7CE;
  --bs-link-hover-color:#2CE0C8;
  --bs-border-radius:12px;
  --bs-border-radius-sm:8px;
  --bs-border-radius-lg:18px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-emphasis-color:#EAF2FF;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
  overflow-x:hidden;
  padding-bottom:74px;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 82% -6%,rgba(44,224,200,.13),transparent 68%),
    radial-gradient(560px 380px at 8% 8%,rgba(77,123,255,.12),transparent 70%),
    linear-gradient(transparent 95%,rgba(140,190,255,.04) 95%) 0 0/100% 44px,
    linear-gradient(90deg,transparent 95%,rgba(140,190,255,.04) 95%) 0 0/44px 100%;
}
a{color:var(--t-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--t-1);letter-spacing:-.3px}
h1{font-size:clamp(28px,4.2vw,50px);line-height:1.18}
h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 1em;color:var(--t-2)}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.container{max-width:1240px;padding-left:20px;padding-right:20px;position:relative;z-index:1}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:68px;
  display:flex;align-items:center;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.scrolled{
  background:rgba(8,14,26,.92);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;gap:26px;width:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--t-1);white-space:nowrap;
}
.brand:hover{color:var(--t-1)}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-600));
  color:#04150F;font-weight:800;font-size:16px;
  box-shadow:var(--glow);
}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-main a{
  position:relative;
  padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--t-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:var(--t-1);background:rgba(255,255,255,.04)}
.nav-main a.active{color:var(--c-primary);background:rgba(44,224,200,.10)}
.header-actions{display:flex;align-items:center;gap:14px}
.header-link{font-size:14px;font-weight:600;color:var(--t-2)}
.header-link:hover{color:var(--c-primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-md);
  padding:12px 22px;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-main{
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-600));
  color:#04150F;box-shadow:var(--glow);
}
.btn-main:hover{color:#04150F;transform:translateY(-1px);box-shadow:0 0 30px rgba(44,224,200,.42)}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-strong);
  color:var(--t-1);
}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(44,224,200,.55);background:rgba(44,224,200,.06)}
.btn-pill{border-radius:var(--r-pill)}

/* ============ 页头横幅 ============ */
.page-hero{
  position:relative;
  margin-top:68px;
  padding:60px 0 56px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.28;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.55),rgba(5,8,15,.94) 78%,var(--bg-0));
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--t-3);margin-bottom:18px}
.crumb a{color:var(--t-2)}
.crumb span.sep{color:var(--t-3)}
.crumb .now{color:var(--c-primary)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;margin-bottom:18px;
  border-radius:var(--r-pill);
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.28);
  color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.6px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-warm);box-shadow:0 0 10px rgba(255,180,84,.9)}
.hero-desc{max-width:760px;font-size:16px;color:var(--t-2);margin-top:16px;margin-bottom:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  padding:6px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  font-size:12.5px;color:var(--t-2);
}
.tag.warm{border-color:rgba(255,180,84,.35);color:var(--c-warm);background:rgba(255,180,84,.08)}
.tag.blue{border-color:rgba(77,123,255,.35);color:#9DB4FF;background:rgba(77,123,255,.08)}

/* ============ 置顶推荐条 ============ */
.pin-bar{
  margin-top:-30px;
  position:relative;z-index:5;
}
.pin-inner{
  display:flex;align-items:center;gap:20px;
  padding:20px 24px;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(44,224,200,.14),rgba(77,123,255,.10) 55%,rgba(255,255,255,.02));
  border:1px solid rgba(44,224,200,.28);
  box-shadow:var(--sh-2);
}
.pin-label{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--c-warm);color:#2A1600;
  font-size:12.5px;font-weight:800;letter-spacing:.5px;
}
.pin-body{flex:1 1 auto;min-width:0}
.pin-body h3{margin-bottom:4px}
.pin-body p{margin:0;font-size:14px;color:var(--t-2);overflow:hidden;text-overflow:ellipsis}
.pin-meta{
  flex:0 0 auto;display:flex;align-items:center;gap:18px;
  font-family:var(--font-num);font-size:13px;color:var(--t-3);
}

/* ============ 版块通用 ============ */
.section{padding:70px 0;position:relative}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.sec-head .lead{max-width:620px}
.sec-head p{margin:10px 0 0;font-size:15px;color:var(--t-2)}
.sec-more{font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.sec-more:hover{color:var(--c-primary);text-decoration:underline}

/* ============ 玩法大图卡片网格 ============ */
.play-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.play-card{
  position:relative;
  display:flex;flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.play-card:hover{transform:translateY(-2px);border-color:rgba(44,224,200,.32);box-shadow:var(--sh-2)}
.play-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.play-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.play-card:hover .play-cover img{transform:scale(1.04)}
.play-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.05) 40%,rgba(5,8,15,.72));
}
.badge-float{
  position:absolute;top:14px;right:14px;z-index:2;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;
  background:rgba(5,8,15,.7);
  border:1px solid rgba(77,123,255,.45);
  color:#9DB4FF;
  backdrop-filter:blur(8px);
}
.badge-float.hot{border-color:rgba(255,180,84,.5);color:var(--c-warm)}
.play-cate{
  position:absolute;left:14px;bottom:14px;z-index:2;
  font-size:12.5px;color:var(--t-2);
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(5,8,15,.68);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(8px);
}
.play-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.play-body h3{font-size:19px;line-height:1.42}
.play-body p{margin:0;font-size:14.5px;color:var(--t-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.play-facts{display:flex;flex-wrap:wrap;gap:10px}
.fact{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--t-3);
  padding:5px 11px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
}
.fact b{font-family:var(--font-num);color:var(--t-1);font-weight:600}
.play-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t-3);
}
.play-foot .go{font-weight:600;color:var(--c-primary)}
.play-foot .go::after{content:" →";transition:margin .2s var(--ease)}
.play-card:hover .play-foot .go::after{margin-left:4px}

/* ============ 热点排行 ============ */
.rank-wrap{
  background:linear-gradient(160deg,rgba(44,224,200,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:8px 24px;
  backdrop-filter:blur(16px) saturate(140%);
}
.rank-item{
  display:flex;align-items:center;gap:18px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:rgba(44,224,200,.04)}
.rank-no{
  flex:0 0 40px;font-family:var(--font-num);font-size:20px;font-weight:700;
  color:var(--t-3);text-align:center;
}
.rank-item:nth-child(1) .rank-no{color:var(--c-warm)}
.rank-item:nth-child(2) .rank-no{color:var(--c-primary)}
.rank-item:nth-child(3) .rank-no{color:#9DB4FF}
.rank-text{flex:1 1 auto;min-width:0}
.rank-text h4{font-size:16px;margin-bottom:2px}
.rank-text p{margin:0;font-size:13.5px;color:var(--t-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-heat{
  flex:0 0 auto;display:flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:13px;color:var(--t-2);
}
.heat-bar{width:72px;height:5px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden}
.heat-bar i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary),var(--c-second))}

/* ============ 节奏流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{
  position:relative;
  padding:24px 22px;
  border-radius:var(--r-lg);
  background:var(--bg-2);
  border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:rgba(44,224,200,.32)}
.step-no{
  font-family:var(--font-num);font-size:13px;font-weight:700;
  color:var(--c-primary);letter-spacing:1px;margin-bottom:12px;display:block;
}
.step h4{margin-bottom:8px}
.step p{margin:0;font-size:14px;color:var(--t-2)}

/* ============ 数据块 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat{
  padding:26px 22px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(44,224,200,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
}
.stat .num{font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--c-primary);line-height:1.1}
.stat .num small{font-size:14px;color:var(--t-2);margin-left:4px;font-weight:600}
.stat .lb{margin-top:8px;font-size:13.5px;color:var(--t-2)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  background:linear-gradient(160deg,rgba(44,224,200,.05),rgba(255,255,255,.02));
  border:1px solid var(--line) !important;
  border-radius:var(--r-lg) !important;
  margin-bottom:14px;overflow:hidden;
  backdrop-filter:blur(16px);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(44,224,200,.38) !important;
  box-shadow:0 0 0 1px rgba(44,224,200,.12);
}
.accordion-button{
  background:transparent !important;
  color:var(--t-1) !important;
  font-size:16px;font-weight:600;
  padding:20px 24px;
  box-shadow:none !important;
}
.accordion-button::before{
  content:"+";
  flex:0 0 auto;width:22px;margin-right:14px;
  color:var(--c-primary);font-size:20px;line-height:1;font-weight:700;
  transition:transform .22s var(--ease);
}
.accordion-button:not(.collapsed)::before{content:"+";transform:rotate(45deg)}
.accordion-button::after{display:none}
.accordion-button:hover{color:var(--c-primary) !important}
.accordion-body{
  padding:0 24px 22px 60px;
  color:var(--t-2);font-size:15px;
}
.accordion-body p{margin:0}

/* ============ 表单 ============ */
.form-card{
  padding:30px 28px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(44,224,200,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
}
.form-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.field label{display:block;font-size:13px;color:var(--t-2);margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:13px 15px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line-strong);
  border-radius:var(--r-md);
  color:var(--t-1);font-size:14.5px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--t-3)}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(44,224,200,.15);
}
.form-foot{display:flex;align-items:center;gap:18px;margin-top:18px;flex-wrap:wrap}
.form-note{font-size:13px;color:var(--t-3)}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  padding:64px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  overflow:hidden;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,8,15,.94),rgba(5,8,15,.78))}
.cta-band .container{position:relative;z-index:2}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{margin-bottom:10px}
.cta-inner p{margin:0;max-width:600px;color:var(--t-2)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  padding:66px 0 26px;
  background:var(--bg-1);
  border-top:1px solid rgba(44,224,200,.22);
  box-shadow:0 -1px 24px rgba(44,224,200,.10);
}
.foot h4{font-size:15px;margin-bottom:16px;color:var(--t-1)}
.foot ul li{margin-bottom:11px;font-size:14px;color:var(--t-2)}
.foot ul li a{color:var(--t-2)}
.foot ul li a:hover{color:var(--c-primary)}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px}
.foot-desc{font-size:14px;color:var(--t-2);margin:0;max-width:340px}
.foot-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
}

/* ============ 移动端底部 Tab ============ */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;
  height:calc(58px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,14,26,.94);
  backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(4,1fr);height:58px}
.tabbar a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--t-3);
}
.tabbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tabbar a.active{color:var(--c-primary)}
.tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:var(--r-pill);
  background:var(--c-primary);box-shadow:var(--glow);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition-duration:.01ms !important}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:62px 0}
}
@media (max-width:991px){
  .nav-main,.header-actions{display:none}
  .tabbar{display:block}
  .page-hero{margin-top:68px;padding:46px 0 44px}
  .pin-bar{margin-top:-24px}
  .pin-inner{flex-direction:column;align-items:flex-start;gap:14px}
  .pin-meta{gap:14px}
  .play-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-row{grid-template-columns:1fr}
  .section{padding:52px 0}
  .cta-band{padding:52px 0}
}
@media (max-width:767px){
  body{font-size:15px;padding-bottom:74px}
  .container{padding-left:16px;padding-right:16px}
  .hero-desc{font-size:15px}
  .rank-wrap{padding:6px 16px}
  .rank-item{gap:12px}
  .heat-bar{display:none}
  .rank-text p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .steps{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .play-body{padding:18px 18px 20px}
  .pin-inner{padding:18px}
  .form-card{padding:22px 18px}
  h1{font-size:26px}
}

/* roulang page: category2 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --c-primary:#2CE0C8;
  --c-primary-600:#17B49F;
  --c-second:#4D7BFF;
  --c-warm:#FFB454;
  --t-1:#EAF2FF;
  --t-2:#A8B7CE;
  --t-3:#6C7C96;
  --line:rgba(140,190,255,.10);
  --line-2:rgba(140,200,255,.12);
  --glass:linear-gradient(160deg,rgba(44,224,200,.06),rgba(255,255,255,.02));
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(0,0,0,.35);
  --sh-2:0 12px 32px rgba(3,8,20,.55);
  --sh-glow:0 0 24px rgba(44,224,200,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","SF Mono",ui-monospace,monospace;
  --bs-body-bg:#05080F;
  --bs-body-color:#A8B7CE;
  --bs-primary:#2CE0C8;
  --bs-primary-rgb:44,224,200;
  --bs-border-color:rgba(140,190,255,.10);
  --bs-link-color:#2CE0C8;
  --bs-link-hover-color:#17B49F;
  --bs-border-radius:12px;
  --bs-border-radius-sm:8px;
  --bs-border-radius-lg:18px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::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(--t-2);
  background:var(--bg-0);
  padding-top:68px;
  padding-bottom:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(600px 400px at 12% -5%,rgba(44,224,200,.10),transparent 60%),
    radial-gradient(700px 460px at 92% 8%,rgba(77,123,255,.10),transparent 62%),
    linear-gradient(rgba(140,190,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,190,255,.04) 1px,transparent 1px);
  background-size:auto,auto,100% 56px,56px 100%;
}
h1,h2,h3,h4,h5{color:var(--t-1);font-weight:700;margin:0;letter-spacing:-.2px;}
h1{font-size:clamp(28px,4.2vw,50px);line-height:1.18;font-weight:700;letter-spacing:-.5px;}
h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-600);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:68px;
  z-index:1030;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,19,.94);
  border-bottom-color:var(--line-2);
  box-shadow:0 10px 30px rgba(3,8,20,.55);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--t-1);
  font-weight:700;
  font-size:16px;
  white-space:nowrap;
  letter-spacing:-.2px;
}
.brand:hover{color:var(--t-1);}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(150deg,rgba(44,224,200,.9),rgba(23,180,159,.85));
  color:#04120F;
  font-size:16px;
  font-weight:800;
  box-shadow:var(--sh-glow);
  flex:0 0 auto;
}
.nav-main{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-main a{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-md);
  color:var(--t-2);
  font-size:15px;
  font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-main a:hover{color:var(--t-1);background:rgba(255,255,255,.05);}
.nav-main a.active{color:var(--c-primary);background:rgba(44,224,200,.10);}
.nav-main a.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:18px;height:2px;
  transform:translateX(-50%);
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(44,224,200,.6);
}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:8px;}
.header-link{
  color:var(--t-2);
  font-size:14px;
  padding:6px 4px;
  border-bottom:1px solid transparent;
}
.header-link:hover{color:var(--c-primary);border-bottom-color:rgba(44,224,200,.5);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  text-align:center;
}
.btn-main{
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-600));
  color:#04120F;
  border-radius:var(--r-pill);
  box-shadow:0 6px 20px rgba(44,224,200,.22);
}
.btn-main:hover{color:#04120F;transform:translateY(-1px);box-shadow:0 10px 26px rgba(44,224,200,.32);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-2);
  color:var(--t-1);
  border-radius:var(--r-pill);
}
.btn-ghost:hover{border-color:rgba(44,224,200,.55);color:var(--c-primary);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(100deg,rgba(5,8,15,.96) 8%,rgba(5,8,15,.78) 48%,rgba(5,8,15,.55) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.9;
}
.page-hero .hero-fade{
  position:absolute;
  left:0;right:0;bottom:0;height:96px;
  background:linear-gradient(to bottom,rgba(5,8,15,0),var(--bg-0));
}
.hero-inner{position:relative;z-index:2;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t-3);
  margin-bottom:22px;
}
.crumbs a{color:var(--t-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:var(--t-3);}
.crumbs .cur{color:var(--c-primary);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  background:rgba(44,224,200,.10);
  border:1px solid rgba(44,224,200,.28);
  color:var(--c-primary);
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 8px rgba(44,224,200,.9);
}
.hero-sub{
  font-size:clamp(15px,1.4vw,18px);
  color:var(--t-2);
  max-width:640px;
  margin:18px 0 0;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:38px;
}
.metric{
  min-width:150px;
  padding:16px 20px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line-2);
  backdrop-filter:blur(16px) saturate(140%);
}
.metric .m-num{
  font-family:var(--font-num);
  font-size:26px;
  font-weight:700;
  color:var(--c-primary);
  line-height:1.1;
}
.metric .m-num small{font-size:13px;color:var(--t-2);font-weight:500;margin-left:4px;}
.metric .m-label{font-size:13px;color:var(--t-2);margin-top:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;position:relative;z-index:1;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .kicker{
  font-size:13px;
  font-weight:600;
  letter-spacing:1.6px;
  color:var(--c-second);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head p{color:var(--t-2);margin-top:14px;font-size:16px;}
.card-soft{
  background:var(--glass);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  backdrop-filter:blur(16px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
@supports not (backdrop-filter:blur(1px)){
  .card-soft,.metric,.toc-card{background:var(--bg-2);}
}
.card-soft:hover{transform:translateY(-2px);border-color:rgba(44,224,200,.32);box-shadow:var(--sh-2);}

/* ---------- 粘性目录 + 时间轴 ---------- */
.layout-split{padding-top:72px;padding-bottom:80px;}
.toc-col{position:relative;}
.toc-card{
  position:sticky;
  top:92px;
  padding:24px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line-2);
  backdrop-filter:blur(16px) saturate(140%);
}
.toc-title{
  font-size:13px;
  font-weight:600;
  letter-spacing:1.2px;
  color:var(--t-3);
  text-transform:uppercase;
  margin-bottom:16px;
}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:var(--r-md);
  color:var(--t-2);
  font-size:14.5px;
  border-left:2px solid transparent;
  transition:all .2s var(--ease);
}
.toc-nav a .t-idx{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--t-3);
  min-width:20px;
}
.toc-nav a:hover{background:rgba(255,255,255,.045);color:var(--t-1);}
.toc-nav a.current{
  color:var(--c-primary);
  background:rgba(44,224,200,.08);
  border-left-color:var(--c-primary);
}
.toc-nav a.current .t-idx{color:var(--c-primary);}
.toc-tip{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t-3);
  line-height:1.7;
}

.block-title{
  display:flex;
  align-items:baseline;
  gap:14px;
  margin-bottom:26px;
}
.block-title h2{font-size:clamp(20px,2.2vw,26px);}
.block-title .badge-line{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--t-3);
}

/* 时间轴 */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(to bottom,rgba(44,224,200,.6),rgba(77,123,255,.28),rgba(140,190,255,.06));
}
.tl-item{
  position:relative;
  padding-left:42px;
  padding-bottom:26px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;
  left:2px;
  top:22px;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--c-primary);
  box-shadow:0 0 0 4px rgba(44,224,200,.10);
}
.tl-item.is-warm .tl-dot{border-color:var(--c-warm);box-shadow:0 0 0 4px rgba(255,180,84,.12);}
.tl-stage{
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.6px;
  color:var(--c-second);
  margin-bottom:8px;
}
.tl-item.is-warm .tl-stage{color:var(--c-warm);}
.tl-card{
  padding:22px 24px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line-2);
  backdrop-filter:blur(16px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-card:hover{transform:translateY(-2px);border-color:rgba(44,224,200,.32);box-shadow:var(--sh-2);}
.tl-card h3{font-size:18px;margin-bottom:10px;}
.tl-card p{font-size:15px;color:var(--t-2);margin-bottom:14px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  color:var(--t-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-2);
}
.tag.tag-main{color:var(--c-primary);border-color:rgba(44,224,200,.3);background:rgba(44,224,200,.08);}
.tag.tag-warm{color:var(--c-warm);border-color:rgba(255,180,84,.3);background:rgba(255,180,84,.08);}
.tag.tag-second{color:#9DB6FF;border-color:rgba(77,123,255,.32);background:rgba(77,123,255,.10);}

/* ---------- 能力条 ---------- */
.cap-title{position:sticky;top:100px;}
.cap-title .mark{
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(77,123,255,.3);
  background:rgba(77,123,255,.10);
  color:#9DB6FF;
  font-size:12.5px;
  font-weight:600;
  margin-bottom:16px;
}
.cap-title p{color:var(--t-2);font-size:15px;margin-top:14px;}
.cap-list{display:flex;flex-direction:column;gap:14px;}
.cap-item{
  display:flex;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.025);
  border:1px solid var(--line);
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.cap-item:hover{background:rgba(44,224,200,.05);border-color:rgba(44,224,200,.28);transform:translateX(3px);}
.cap-ico{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(44,224,200,.12);
  border:1px solid rgba(44,224,200,.25);
  color:var(--c-primary);
}
.cap-item h4{margin-bottom:6px;font-size:16.5px;}
.cap-item p{font-size:14.5px;color:var(--t-2);margin:0;}

/* ---------- 场景横滚卡 ---------- */
.scroll-row{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding-bottom:14px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.scroll-row::-webkit-scrollbar{height:6px;}
.scroll-row::-webkit-scrollbar-thumb{background:rgba(44,224,200,.25);border-radius:99px;}
.scene-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line-2);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);border-color:rgba(44,224,200,.34);box-shadow:var(--sh-2);}
.scene-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
}
.scene-cover img{width:100%;height:100%;object-fit:cover;opacity:.92;transition:transform .4s var(--ease);}
.scene-card:hover .scene-cover img{transform:scale(1.04);}
.scene-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(5,8,15,.82),rgba(5,8,15,.05) 65%);
}
.scene-badge{
  position:absolute;
  top:12px;right:12px;
  z-index:2;
  padding:5px 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  color:#9DB6FF;
  background:rgba(10,18,32,.78);
  border:1px solid rgba(77,123,255,.35);
  backdrop-filter:blur(8px);
}
.scene-badge.hot{color:var(--c-warm);border-color:rgba(255,180,84,.4);}
.scene-body{padding:20px 22px 24px;}
.scene-body h3{font-size:17px;margin-bottom:8px;}
.scene-body p{font-size:14.5px;color:var(--t-2);margin:0;}

/* ---------- 步骤条 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
  padding:24px 22px;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.025);
  border:1px solid var(--line);
  position:relative;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.step:hover{transform:translateY(-3px);border-color:rgba(44,224,200,.3);background:rgba(44,224,200,.05);}
.step .s-num{
  font-family:var(--font-num);
  font-size:30px;
  font-weight:700;
  color:rgba(44,224,200,.28);
  line-height:1;
  margin-bottom:14px;
}
.step h4{font-size:16px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--t-2);margin:0;}

/* ---------- 高亮结论条 ---------- */
.note-bar{
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:20px 24px;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(255,180,84,.10),rgba(255,255,255,.02));
  border:1px solid rgba(255,180,84,.26);
  margin-top:28px;
}
.note-bar .n-ico{
  flex:0 0 auto;
  width:32px;height:32px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,180,84,.16);
  color:var(--c-warm);
}
.note-bar p{margin:0;font-size:14.5px;color:var(--t-2);}
.note-bar strong{color:var(--t-1);}

/* ---------- FAQ ---------- */
.accordion-item{
  background:var(--glass);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg)!important;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(16px) saturate(140%);
  transition:border-color .22s var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(44,224,200,.42);}
.accordion-button{
  background:transparent;
  color:var(--t-1);
  font-size:16px;
  font-weight:600;
  padding:20px 52px 20px 22px;
  box-shadow:none;
  gap:12px;
}
.accordion-button::before{
  content:"+";
  font-family:var(--font-num);
  font-size:20px;
  line-height:1;
  color:var(--c-primary);
  margin-right:4px;
  font-weight:400;
}
.accordion-button:not(.collapsed)::before{content:"–";}
.accordion-button:not(.collapsed){
  background:rgba(44,224,200,.06);
  color:var(--c-primary);
}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(44,224,200,.15);}
.accordion-button::after{display:none;}
.accordion-body{
  padding:4px 22px 22px 22px;
  color:var(--t-2);
  font-size:15px;
  line-height:1.85;
}
.accordion-body strong{color:var(--t-1);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(560px 320px at 84% 12%,rgba(44,224,200,.16),transparent 62%),
    radial-gradient(520px 320px at 6% 90%,rgba(77,123,255,.14),transparent 60%),
    var(--bg-1);
  padding:70px 0;
}
.cta-band .cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);max-width:640px;}
.cta-band p{color:var(--t-2);margin-top:12px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  padding-top:64px;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:min(1240px,90%);
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(44,224,200,.55),transparent);
}
.foot-brand{
  display:flex;align-items:center;gap:10px;
  color:var(--t-1);
  font-weight:700;
  font-size:16px;
  margin-bottom:16px;
}
.foot-desc{font-size:14px;color:var(--t-2);max-width:330px;line-height:1.8;}
.site-footer h4{
  font-size:14px;
  color:var(--t-1);
  margin-bottom:16px;
  letter-spacing:.4px;
}
.site-footer ul{display:flex;flex-direction:column;gap:10px;}
.site-footer ul a,.site-footer ul span{font-size:14px;color:var(--t-2);}
.site-footer ul a:hover{color:var(--c-primary);}
.foot-bottom{
  margin-top:48px;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--t-3);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  height:58px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(6,10,19,.95);
  backdrop-filter:blur(14px) saturate(140%);
  border-top:1px solid var(--line-2);
}
.mobile-tab a{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--t-3);
  position:relative;
}
.mobile-tab a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;}
.mobile-tab a.active{color:var(--c-primary);text-shadow:0 0 12px rgba(44,224,200,.4);}
.mobile-tab a.active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(44,224,200,.7);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cap-title{position:static;}
}
@media (max-width:991px){
  body{padding-bottom:74px;}
  .nav-main,.header-actions .header-link{display:none;}
  .header-actions{margin-left:auto;}
  .mobile-tab{display:flex;}
  .toc-card{position:static;padding:18px;}
  .toc-nav{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;}
  .toc-nav a{white-space:nowrap;border-left:none;border:1px solid var(--line-2);border-radius:var(--r-pill);padding:8px 14px;}
  .toc-nav a.current{border-color:rgba(44,224,200,.5);}
  .toc-tip{display:none;}
  .section{padding:56px 0;}
  .page-hero{padding:44px 0 56px;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  h1{font-size:clamp(25px,6.4vw,34px);}
  .hero-metrics{gap:10px;}
  .metric{min-width:calc(50% - 5px);padding:14px 16px;}
  .tl-item{padding-left:32px;}
  .timeline::before{left:7px;}
  .tl-dot{left:0;width:15px;height:15px;}
  .tl-card{padding:18px;}
  .scene-card{flex:0 0 264px;}
  .foot-bottom{flex-direction:column;}
}
@media (max-width:519px){
  .step-grid{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}