/* roulang page: index */
:root{
  --bg:#070B14;--bg-2:#0C1220;--bg-band:#0A101C;
  --glass:rgba(255,255,255,.045);--glass-line:rgba(255,255,255,.09);--glass-top:rgba(255,255,255,.14);
  --brand:#23E0A8;--brand-hi:#3BF0BC;--accent:#FF6A2B;--info:#4C8DFF;
  --text:#EAF0FF;--text-2:#A9B6CC;--text-3:#6B7A93;--on-brand:#04140F;
  --ok:#2BD97C;--warn:#FFB020;--err:#FF4D5E;
  --r-card:16px;--r-img:14px;--r-btn:12px;--r-input:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);--shadow-hover:0 12px 40px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);--section-y:96px;--maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.8;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-hi)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.005em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding:var(--section-y) 0;position:relative}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;margin-bottom:40px}
.section-head.center{justify-content:center;text-align:center;position:relative}
.section-head h2{font-size:30px;line-height:1.3;max-width:760px}
.section-head .section-lead{font-size:15px;color:var(--text-2);max-width:520px}
.anchor-tag{
  position:absolute;right:0;top:6px;font-size:12px;letter-spacing:.06em;color:var(--brand);
  border:1px solid rgba(35,224,168,.32);background:rgba(35,224,168,.08);padding:4px 12px;border-radius:999px;
}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:transparent;border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease)}
.site-header.is-stuck{background:rgba(7,11,20,.84);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:rgba(255,255,255,.08)}
.nav-wrap{height:64px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700;flex:0 0 auto}
.brand-mark{width:20px;height:20px;color:var(--brand);flex:0 0 auto}
.brand-text{font-size:17px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--brand)}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;padding:9px 13px;font-size:14px;color:var(--text-2);border-radius:10px;
  transition:color .18s var(--ease),background .18s var(--ease)}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(35,224,168,.85)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-box svg{width:15px;height:15px;color:var(--text-3);flex:0 0 auto}
.search-box input{width:132px;background:none;border:0;outline:0;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(35,224,168,.18)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.05);color:var(--text);align-items:center;justify-content:center}
.menu-toggle svg{width:18px;height:18px}
/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:600;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-primary{background:var(--brand);color:var(--on-brand);box-shadow:0 0 0 1px var(--brand),0 8px 28px rgba(35,224,168,.3)}
.btn-primary:hover{background:var(--brand-hi);color:var(--on-brand);transform:translateY(-1px);box-shadow:0 0 0 1px var(--brand-hi),0 10px 34px rgba(35,224,168,.45)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{background:rgba(255,255,255,.045);border-color:var(--glass-line);color:var(--brand)}
.btn-ghost:hover{background:rgba(35,224,168,.09);border-color:rgba(35,224,168,.5);color:var(--brand-hi);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px);filter:brightness(.94)}
.btn:disabled,.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover span{transform:translateX(3px)}
/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 88px;overflow:hidden}
.hero::before{content:"";position:absolute;top:-160px;right:-120px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,224,168,.16),transparent 66%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-220px;left:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(76,141,255,.10),transparent 68%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--brand);
  border:1px solid rgba(35,224,168,.3);background:rgba(35,224,168,.07);padding:5px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:44px;line-height:1.28;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;gap:40px;margin-top:44px;padding-top:26px;border-top:1px solid var(--glass-line)}
.trust-row li{display:flex;flex-direction:column;gap:2px}
.trust-row .num{font-size:28px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text);line-height:1.1}
.trust-row .num em{font-style:normal;font-size:13px;color:var(--text-3);margin-left:2px}
.trust-row .lbl{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--shadow)}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#0B1220}
.hero-figure .figure-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.15),rgba(7,11,20,.86))}
.float-card{position:absolute;border-radius:var(--r-card);padding:14px 18px;background:rgba(12,18,32,.78);
  border:1px solid var(--glass-line);box-shadow:0 10px 34px rgba(0,0,0,.5);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.float-card span{display:block;font-size:12px;letter-spacing:.05em;color:var(--text-3)}
.float-card strong{display:block;font-size:26px;font-variant-numeric:tabular-nums;color:var(--text);line-height:1.25}
.float-card strong em{font-style:normal;font-size:13px;color:var(--brand);margin-left:2px}
.fc-1{left:-18px;bottom:56px;animation:floaty 4s ease-in-out infinite}
.fc-2{right:-14px;top:38px;animation:floaty 4s ease-in-out infinite .8s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
/* ---------- pain ---------- */
.pain{padding-top:64px}
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pain-card{position:relative;padding:26px 22px 26px 26px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--glass-line);border-left:3px solid var(--brand);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .24s var(--ease)}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(35,224,168,.4);border-left-color:var(--brand)}
.pain-ico{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(35,224,168,.1);color:var(--brand);margin-bottom:16px}
.pain-ico svg{width:19px;height:19px}
.pain-card h3{font-size:17px;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--text-2);line-height:1.75}
/* ---------- solution ---------- */
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.alt-row:last-child{margin-bottom:0}
.alt-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--glass-line);
  box-shadow:var(--shadow),0 0 0 8px rgba(35,224,168,.05);transition:transform .24s var(--ease)}
.alt-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);background:#0B1220}
.alt-row:hover .alt-media img{transform:scale(1.03)}
.alt-row.reverse .alt-media{order:2}
.alt-row.reverse .alt-body{order:1}
.badge{display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;padding:4px 11px;border-radius:999px;font-weight:600}
.badge-step{background:rgba(35,224,168,.12);color:var(--brand)}
.badge-brand{background:rgba(35,224,168,.12);color:var(--brand)}
.badge-info{background:rgba(76,141,255,.14);color:#8FB6FF}
.alt-body h3{font-size:22px;margin:16px 0 12px}
.alt-body p{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:18px;max-width:44ch}
/* ---------- band ---------- */
.band{background:var(--bg-band);border-top:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line);padding:80px 0}
.band h2{font-size:30px;text-align:center;margin-bottom:12px}
.band .band-lead{text-align:center;color:var(--text-2);font-size:15px;margin-bottom:48px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:64px}
.stat-cell{padding:24px 20px;border-radius:var(--r-card);background:rgba(255,255,255,.03);border:1px solid var(--glass-line);text-align:center}
.stat-cell strong{display:block;font-size:40px;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--brand)}
.stat-cell strong em{font-style:normal;font-size:14px;color:var(--text-3);margin-left:3px}
.stat-cell span{display:block;margin-top:8px;font-size:13px;color:var(--text-2)}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.timeline::before{content:"";position:absolute;left:6%;right:6%;top:9px;height:1px;
  background:linear-gradient(90deg,rgba(35,224,168,.15),rgba(35,224,168,.7),rgba(35,224,168,.15))}
.tl-item{position:relative;padding:34px 18px 0;text-align:center}
.tl-dot{position:absolute;top:2px;left:50%;transform:translateX(-50%);width:15px;height:15px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 5px rgba(35,224,168,.14),0 0 18px rgba(35,224,168,.7)}
.tl-label{display:block;font-size:15px;font-weight:600;color:var(--text)}
.tl-desc{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}
/* ---------- latest / CMS ---------- */
.latest-head{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:36px}
.latest-head h2{font-size:30px;margin-right:auto}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:13px;padding:7px 15px;border-radius:999px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);color:var(--text-2);transition:all .2s var(--ease)}
.chip:hover{color:var(--text);border-color:rgba(35,224,168,.45)}
.chip.is-on{background:rgba(35,224,168,.12);border-color:rgba(35,224,168,.45);color:var(--brand)}
.latest-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}
.post-feature{display:block;border-radius:var(--r-card);overflow:hidden;background:var(--glass);border:1px solid var(--glass-line);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .24s var(--ease)}
.post-feature:hover{transform:translateY(-2px);border-color:rgba(35,224,168,.42);box-shadow:var(--shadow-hover);color:var(--text)}
.post-feature .media{position:relative;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.post-feature .media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);background:#0B1220}
.post-feature:hover .media img{transform:scale(1.03)}
.post-feature .body{padding:24px 26px 26px}
.post-feature h3{font-size:20px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-feature p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--text-3)}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
.post-list{display:flex;flex-direction:column;gap:14px}
.post-mini{display:flex;gap:14px;align-items:center;padding:12px;border-radius:14px;background:rgba(255,255,255,.03);
  border:1px solid var(--glass-line);transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);color:var(--text)}
.post-mini:hover{transform:translateY(-2px);border-color:rgba(35,224,168,.42);background:rgba(255,255,255,.05);color:var(--text)}
.post-mini-thumb{flex:0 0 auto;width:96px;height:96px;border-radius:12px;overflow:hidden}
.post-mini-thumb img{width:100%;height:100%;object-fit:cover;background:#0B1220}
.post-mini-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.post-mini-body strong{font-size:15px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-mini-body em{font-style:normal;font-size:12px;color:var(--text-3)}
.latest-empty{grid-column:1 / -1;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border-radius:var(--r-card);border:1px dashed rgba(35,224,168,.3);background:rgba(35,224,168,.03);text-align:center;padding:40px 20px}
.latest-empty svg{width:34px;height:34px;color:rgba(35,224,168,.4)}
.latest-empty p{color:var(--text-3);font-size:15px}
/* ---------- testimonials ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.quote-card{position:relative;padding:30px 26px 26px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--glass-line);box-shadow:var(--shadow);overflow:hidden}
.quote-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--glass-top),transparent)}
.quote-card:nth-child(2){margin-top:24px}
.quote-mark{font-size:44px;line-height:1;color:rgba(35,224,168,.35);font-family:Georgia,serif;margin-bottom:6px}
.quote-card p{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:22px}
.stars{display:flex;gap:3px;margin-bottom:18px;color:var(--accent)}
.stars svg{width:14px;height:14px}
.quote-person{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(140deg,rgba(35,224,168,.5),rgba(76,141,255,.4));
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#04140F}
.quote-person strong{display:block;font-size:14px}
.quote-person span{display:block;font-size:12px;color:var(--text-3)}
/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:12px;max-width:920px;margin:0 auto}
.faq-item{border:1px solid var(--glass-line);border-radius:14px;background:rgba(255,255,255,.03);transition:border-color .24s var(--ease),background .24s var(--ease)}
.faq-item:hover{border-color:rgba(255,255,255,.18)}
.faq-item[open]{border-color:rgba(35,224,168,.4);background:rgba(35,224,168,.045)}
.faq-summary{display:flex;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;list-style:none;font-size:16px;font-weight:600}
.faq-summary::-webkit-details-marker{display:none}
.faq-num{flex:0 0 auto;font-size:12px;font-variant-numeric:tabular-nums;color:var(--brand);border:1px solid rgba(35,224,168,.35);
  border-radius:8px;padding:2px 8px;background:rgba(35,224,168,.08)}
.faq-arrow{margin-left:auto;color:var(--text-3);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-arrow svg{width:16px;height:16px;display:block}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--brand)}
.faq-body{padding:0 22px 22px 62px;font-size:15px;line-height:1.85;color:var(--text-2)}
/* ---------- cta ---------- */
.cta-band{position:relative;padding:88px 0;text-align:center;overflow:hidden;
  border-top:1px solid var(--glass-line);background:radial-gradient(circle at 50% 0%,rgba(35,224,168,.1),transparent 62%),var(--bg-2)}
.cta-band h2{font-size:30px;margin-bottom:14px}
.cta-band p{font-size:16px;color:var(--text-2);max-width:560px;margin:0 auto 32px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}
/* ---------- footer ---------- */
.site-footer{background:var(--bg-band);border-top:1px solid var(--glass-line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-brand em{font-style:normal;color:var(--brand)}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.85;max-width:34ch;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{width:36px;height:36px;border-radius:50%;border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:all .2s var(--ease)}
.footer-social a:hover{color:var(--brand);border-color:rgba(35,224,168,.45);transform:translateY(-2px)}
.footer-social svg{width:16px;height:16px}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-3);display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-qr{width:96px;height:96px;border-radius:12px;border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;color:var(--text-3);font-size:12px;text-align:center;line-height:1.5;margin-bottom:14px}
.footer-note{font-size:13px;color:var(--text-3)}
.footer-bottom{border-top:1px solid var(--glass-line);padding:22px 0;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:20px;align-items:center}
.footer-bottom-links a{font-size:13px;color:var(--text-3)}
.footer-bottom-links a:hover{color:var(--brand)}
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;z-index:70;
  border:1px solid rgba(35,224,168,.5);background:rgba(12,18,32,.9);color:var(--brand);display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 18px rgba(35,224,168,.35);opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease)}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top svg{width:18px;height:18px}
/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(4,7,13,.6);backdrop-filter:blur(2px);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease);z-index:90}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:310px;max-width:86vw;z-index:95;background:var(--bg-2);
  border-left:1px solid var(--glass-line);transform:translateX(100%);transition:transform .28s var(--ease);
  padding:26px 22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer h3{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:12px}
.drawer a.d-item{padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text-2);border:1px solid transparent;transition:all .2s var(--ease)}
.drawer a.d-item:hover,.drawer a.d-item.is-active{background:rgba(35,224,168,.09);border-color:rgba(35,224,168,.32);color:var(--brand)}
.drawer .drawer-actions{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.drawer .search-box{width:100%;height:42px;margin-bottom:10px}
.drawer .search-box input{width:100%}
/* ---------- responsive ---------- */
@media (max-width:1280px){
  .hero h1{font-size:40px}
  .container{padding:0 28px}
}
@media (max-width:1024px){
  :root{--section-y:72px}
  .nav-channels{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:36px}
  .hero-sub{font-size:17px}
  .hero-visual{max-width:640px}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(2,1fr);row-gap:28px}
  .timeline::before{display:none}
  .quote-grid{grid-template-columns:1fr 1fr}
  .quote-card:nth-child(2){margin-top:0}
  .latest-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--section-y:56px}
  .container{padding:0 16px}
  .nav-wrap{height:60px}
  .brand-text{font-size:16px}
  .hero{padding:44px 0 60px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:16px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .trust-row{flex-wrap:wrap;gap:24px}
  .trust-row li{flex:1 1 40%}
  .fc-1{left:8px;bottom:14px}
  .fc-2{right:8px;top:12px}
  .section-head h2,.band h2,.latest-head h2,.cta-band h2{font-size:24px}
  .anchor-tag{position:static}
  .band{padding:56px 0}
  .alt-row{grid-template-columns:1fr;gap:24px;margin-bottom:48px}
  .alt-row.reverse .alt-media,.alt-row.reverse .alt-body{order:0}
  .pain-grid,.stat-grid,.quote-grid,.footer-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .tl-item{text-align:left;padding:20px 0 0 26px}
  .tl-dot{left:0;top:26px;transform:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (max-width:480px){
  .hero h1{font-size:27px}
  .trust-row .num{font-size:24px}
  .faq-body{padding-left:22px}
  .post-mini-thumb{width:80px;height:80px}
  .to-top{right:16px;bottom:16px}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-2:#0C1220;
  --bg-3:#0A101C;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(255,255,255,.09);
  --glass-top:rgba(255,255,255,.14);
  --primary:#23E0A8;
  --primary-hi:#3BF0BC;
  --accent:#FF6A2B;
  --info:#4C8DFF;
  --text:#EAF0FF;
  --text-2:#A9B6CC;
  --text-3:#6B7A93;
  --ok:#2BD97C;
  --warn:#FFB020;
  --err:#FF4D5E;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:12px;
  --sh-card:0 8px 30px rgba(0,0,0,.45);
  --sh-card-hi:0 12px 40px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  height:64px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),backdrop-filter var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  border-bottom-color:var(--glass-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.nav-brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:20px;height:20px;color:var(--primary);flex:none}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary)}
.nav-channels{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0}
.nav-link{
  position:relative;
  padding:8px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(35,224,168,.75);
}
.nav-tools{display:flex;align-items:center;gap:12px;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;min-width:210px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex:none}
.nav-search input{
  flex:1;min-width:0;background:none;border:0;outline:none;font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,224,168,.18)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);cursor:pointer;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.nav-toggle:hover{border-color:rgba(35,224,168,.45)}
.nav-toggle svg{width:18px;height:18px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#04140F;
  box-shadow:0 0 0 1px var(--primary),0 8px 28px rgba(35,224,168,.3);
}
.btn-primary:hover{background:var(--primary-hi);box-shadow:0 0 0 1px var(--primary-hi),0 10px 32px rgba(35,224,168,.45);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:var(--glass);color:var(--primary);
  border-color:rgba(35,224,168,.35);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(35,224,168,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.94)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
  background:none;border:0;padding:4px 0;cursor:pointer;
}
.btn-text svg{width:15px;height:15px;transition:transform var(--t) var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn-sm{padding:10px 16px;font-size:13.5px}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(4,7,13,.62);
  opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:95;
  width:min(320px,86vw);
  background:var(--bg-2);
  border-left:1px solid var(--glass-line);
  padding:24px 22px;
  transform:translateX(102%);
  transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:38px;height:38px;border-radius:50%;
  background:var(--glass);border:1px solid var(--glass-line);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close svg{width:16px;height:16px}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  transition:background var(--t) var(--ease),color var(--t) var(--ease),padding-left var(--t) var(--ease);
}
.drawer-links a:hover,.drawer-links a.is-active{background:rgba(255,255,255,.05);color:var(--text);padding-left:18px}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto}

/* ============ breadcrumb ============ */
.crumbs{padding:26px 0 0;font-size:13px;color:var(--text-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px;min-width:0}
.crumbs a{color:var(--text-3);transition:color var(--t) var(--ease)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(107,122,147,.6)}
.crumbs .now{color:var(--primary);max-width:min(520px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ article head ============ */
.article-wrap{padding:20px 0 96px}
.article-head{padding:22px 0 34px;border-bottom:1px solid var(--glass-line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;font-weight:600;
  background:rgba(35,224,168,.12);color:var(--primary);
}
.badge-info{background:rgba(76,141,255,.12);color:var(--info)}
.article-head h1{
  margin-top:16px;
  font-size:36px;line-height:1.32;letter-spacing:-.01em;
  max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:13px;color:var(--text-3);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:rgba(107,122,147,.7)}
.meta-author{display:flex;align-items:center;gap:8px;color:var(--text-2)}
.meta-avatar{
  width:28px;height:28px;border-radius:50%;
  background:linear-gradient(150deg,rgba(35,224,168,.35),rgba(76,141,255,.28));
  border:1px solid var(--glass-line);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--text);
}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);cursor:pointer;
  color:var(--text-2);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.icon-btn svg{width:16px;height:16px}
.icon-btn:hover{border-color:rgba(35,224,168,.5);color:var(--primary);transform:translateY(-1px)}

/* ============ layout ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 316px;
  gap:48px;
  padding-top:40px;
  align-items:start;
}
.article-main{min-width:0}
.article-body{
  min-height:320px;
  max-width:820px;
  font-size:17px;line-height:1.9;color:#DDE5F4;
}
.article-body > * + *{margin-top:20px}
.article-body h2{
  position:relative;
  margin-top:44px;
  padding-left:14px;
  font-size:22px;line-height:1.4;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 14px rgba(35,224,168,.5);
}
.article-body h3{margin-top:32px;font-size:18px;color:var(--text)}
.article-body h4{margin-top:24px;font-size:17px;color:var(--text-2)}
.article-body p{margin-top:20px}
.article-body a{
  color:var(--primary);
  text-decoration:underline;text-underline-offset:3px;
  transition:text-shadow var(--t) var(--ease);
}
.article-body a:hover{text-shadow:0 0 12px rgba(35,224,168,.6)}
.article-body ul,.article-body ol{margin-top:18px;padding-left:0;display:flex;flex-direction:column;gap:10px}
.article-body ul li{position:relative;padding-left:20px;color:var(--text-2)}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);opacity:.9;
}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;color:var(--text-2);counter-increment:li}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:.1em;
  font-size:13px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  background:var(--glass);
  color:var(--text-2);
}
.article-body blockquote p{margin-top:0}
.article-body img{border-radius:var(--r-img);margin:24px 0;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;
  font-size:15px;
  border-radius:var(--r-btn);overflow:hidden;
}
.article-body thead th{
  background:rgba(255,255,255,.06);
  color:var(--text);font-weight:600;text-align:left;
  padding:12px 16px;font-size:14px;
}
.article-body tbody td{padding:12px 16px;color:var(--text-2)}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.028)}
.article-body tbody tr:hover{background:rgba(35,224,168,.06)}
.article-body pre{
  background:#05080F;
  border:1px solid var(--glass-line);
  border-radius:var(--r-btn);
  padding:18px;overflow-x:auto;
  font-size:14px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:#C8D6EE;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
  background:rgba(255,255,255,.07);
  border-radius:6px;padding:2px 7px;color:var(--primary);
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--glass-line);margin:36px 0}

/* empty state */
.empty-state{
  min-height:280px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:48px 24px;text-align:center;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
}
.empty-state svg{width:44px;height:44px;color:rgba(35,224,168,.2)}
.empty-state h2{font-size:20px}
.empty-state p{color:var(--text-3);font-size:14px;max-width:420px}

/* tags */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--glass-line)}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.tag:hover{border-color:rgba(35,224,168,.5);color:var(--primary);transform:translateY(-1px)}

/* prev / next */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.pager-card{
  display:block;padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  transition:border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.pager-card:hover{border-color:rgba(35,224,168,.45);transform:translateY(-2px);box-shadow:var(--sh-card-hi)}
.pager-card .dir{font-size:12px;letter-spacing:.06em;color:var(--text-3)}
.pager-card .ttl{margin-top:8px;font-size:15.5px;font-weight:600;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager-card.is-right{text-align:right}

/* related */
.related-block{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:22px}
.section-head .sub{margin-top:6px;font-size:14px;color:var(--text-3)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  transition:border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.related-card:hover{border-color:rgba(35,224,168,.45);transform:translateY(-2px);box-shadow:var(--sh-card-hi)}
.related-thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(120deg,rgba(255,255,255,.04),rgba(255,255,255,.09),rgba(255,255,255,.04));
  background-size:220% 100%;
  animation:skeleton 1.6s linear infinite;
}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease)}
.related-card:hover .related-thumb img{transform:scale(1.03)}
.related-body{padding:16px 18px 18px}
.related-body h3{font-size:16px;line-height:1.55;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body .time{margin-top:10px;font-size:13px;color:var(--text-3)}
@keyframes skeleton{0%{background-position:120% 0}100%{background-position:-120% 0}}

/* ============ sidebar ============ */
.sidebar{display:flex;flex-direction:column;gap:22px}
.side-card{
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-card);
  padding:20px 20px 22px;
}
.side-card h3{font-size:15px;color:var(--text);letter-spacing:.02em}
.toc{position:sticky;top:96px}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:9px 12px;border-left:2px solid transparent;border-radius:0 10px 10px 0;
  font-size:13.5px;color:var(--text-3);
  transition:color var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);background:rgba(35,224,168,.07)}
.mini-list{margin-top:14px;display:flex;flex-direction:column;gap:14px}
.mini-item{display:flex;gap:12px;align-items:flex-start}
.mini-thumb{
  width:72px;height:72px;border-radius:12px;overflow:hidden;flex:none;
  background:rgba(255,255,255,.06);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-item h4{font-size:14px;font-weight:600;line-height:1.55;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--t) var(--ease)}
.mini-item:hover h4{color:var(--primary)}
.mini-item .time{margin-top:6px;font-size:12px;color:var(--text-3)}
.side-actions{display:flex;flex-direction:column;gap:10px;margin-top:16px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  margin-top:20px;
  border-radius:24px;
  padding:64px 32px;
  text-align:center;
  border:1px solid var(--glass-line);
  background:
    radial-gradient(680px 260px at 50% 0%,rgba(35,224,168,.10),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0)),
    var(--bg-3);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(60% 60% at 50% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(60% 60% at 50% 40%,#000,transparent 78%);
}
.cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:16px}
.cta-band h2{font-size:30px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;justify-content:center;margin-top:6px}

/* ============ footer ============ */
.site-footer{
  margin-top:96px;
  background:var(--bg-3);
  border-top:1px solid var(--glass-line);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700}
.footer-brand em{font-style:normal;color:var(--primary)}
.footer-desc{margin-top:14px;font-size:13.5px;line-height:1.85;color:var(--text-3);max-width:300px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-2);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.footer-social a svg{width:16px;height:16px}
.footer-social a:hover{border-color:rgba(35,224,168,.5);color:var(--primary);transform:translateY(-2px)}
.footer-col h4{font-size:14px;color:var(--text);letter-spacing:.02em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{
  font-size:14px;color:var(--text-3);
  transition:color var(--t) var(--ease),transform var(--t) var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.sub-form{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.sub-form label{font-size:13px;color:var(--text-3)}
.sub-form input{
  height:42px;padding:0 14px;border-radius:var(--r-input);
  background:var(--glass);border:1px solid var(--glass-line);
  outline:none;font-size:14px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,224,168,.18)}
.qr-box{
  width:96px;height:96px;border-radius:12px;margin-top:14px;
  background:var(--glass);border:1px solid var(--glass-line);
  display:flex;align-items:center;justify-content:center;color:var(--text-3);
}
.qr-box svg{width:40px;height:40px;opacity:.5}
.footer-bottom{
  margin-top:52px;padding-top:22px;
  border-top:1px solid var(--glass-line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
.footer-bottom-links a:hover{color:var(--primary)}
.to-top{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(35,224,168,.5);color:var(--primary);
  cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{box-shadow:0 0 18px rgba(35,224,168,.45);transform:translateY(-2px)}
.to-top svg{width:16px;height:16px}

/* toast */
.toast{
  position:fixed;top:18px;left:50%;transform:translate(-50%,-140%);
  z-index:120;padding:12px 20px;border-radius:12px;
  background:rgba(12,18,32,.94);border:1px solid rgba(35,224,168,.4);
  color:var(--text);font-size:14px;box-shadow:var(--sh-card);
  transition:transform 240ms var(--ease);
}
.toast.is-show{transform:translate(-50%,0)}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ responsive ============ */
@media (max-width:1280px){
  .container{padding:0 24px}
}
@media (max-width:1024px){
  .nav-search{min-width:170px}
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
  .article-head h1{font-size:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-search{display:none}
  .nav-channels{display:none}
  .nav-toggle{display:flex}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{order:2}
  .toc{position:static}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .site-header{height:60px}
  .nav-inner{height:60px}
  .brand-text{font-size:16px}
  .crumbs{padding-top:18px}
  .article-head h1{font-size:26px}
  .article-body{font-size:16px}
  .article-body h2{font-size:20px}
  .pager{grid-template-columns:1fr}
  .pager-card.is-right{text-align:left}
  .cta-band{padding:48px 20px;border-radius:18px}
  .cta-band h2{font-size:24px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .share-group{margin-left:0;width:100%}
}
@media (max-width:520px){
  .article-head h1{font-size:23px}
  .meta-row{gap:10px}
  .related-grid{grid-template-columns:1fr}
  .badge{font-size:11.5px}
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --surface:#0C1220;
  --strip:#0A101C;
  --glass:rgba(255,255,255,.045);
  --glass-border:rgba(255,255,255,.09);
  --glass-top:rgba(255,255,255,.14);
  --primary:#23E0A8;
  --primary-hover:#3BF0BC;
  --accent:#FF6A2B;
  --info:#4C8DFF;
  --text:#EAF0FF;
  --text-2:#A9B6CC;
  --text-3:#6B7A93;
  --on-primary:#04140F;
  --ok:#2BD97C;
  --warn:#FFB020;
  --err:#FF4D5E;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  height:64px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.84);
  border-bottom-color:var(--glass-border);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-inner{height:64px;display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand em{font-style:normal;color:var(--primary)}
.brand-mark{width:20px;height:20px;color:var(--primary);flex:none}
.nav-channels{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  transition:color var(--t),background var(--t);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px var(--primary);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search svg{position:absolute;left:14px;width:16px;height:16px;color:var(--text-3);pointer-events:none}
.nav-search input{
  width:190px;height:38px;padding:0 16px 0 38px;
  border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
  color:var(--text);font-size:13.5px;
  transition:border-color var(--t),box-shadow var(--t),width var(--t);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(35,224,168,.18);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;line-height:1;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t),filter var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:var(--on-primary);
  box-shadow:0 0 0 1px var(--primary),0 8px 28px rgba(35,224,168,.30);
}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 0 0 1px var(--primary-hover),0 12px 34px rgba(35,224,168,.45)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{
  background:var(--glass);color:var(--primary);
  border:1px solid var(--glass-border);
}
.btn-ghost:hover{border-color:rgba(35,224,168,.5);background:rgba(35,224,168,.07);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;padding:6px 0;
}
.btn-text svg{width:15px;height:15px;transition:transform var(--t)}
.btn-text:hover svg{transform:translateX(3px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;box-shadow:none;cursor:not-allowed}
.nav-toggle{display:none;width:40px;height:40px;border-radius:50%;background:var(--glass);border:1px solid var(--glass-border);align-items:center;justify-content:center}
.nav-toggle svg{width:18px;height:18px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.66);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:95}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:296px;max-width:86vw;z-index:96;
  background:#0A0F1B;border-left:1px solid var(--glass-border);
  transform:translateX(100%);transition:transform 260ms var(--ease);
  padding:22px 20px;display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-close{width:38px;height:38px;border-radius:50%;background:var(--glass);border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center}
.drawer-close svg{width:16px;height:16px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all var(--t);
}
.drawer-link:hover,.drawer-link.is-active{background:rgba(35,224,168,.08);border-color:rgba(35,224,168,.28);color:var(--text)}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.drawer-actions .btn{width:100%}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--glass-border);padding:52px 0 46px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.24;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.92) 62%,var(--bg) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--text-2);transition:color var(--t)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3);opacity:.7}
.crumb .cur{color:var(--primary)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:36px;align-items:end}
.page-hero h1{
  font-size:38px;line-height:1.28;font-weight:700;letter-spacing:-.01em;
  max-width:20em;
}
.page-hero h1 .hl{color:var(--primary)}
.hero-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:34em}
.anchor-pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:999px;font-size:13px;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);
  transition:all var(--t);
}
.pill:hover{color:var(--text);border-color:rgba(35,224,168,.45);background:rgba(35,224,168,.08)}

/* ---------- layout ---------- */
main{display:block}
.section{padding:72px 0}
.section-tight{padding:56px 0}
.split{display:grid;grid-template-columns:3fr 9fr;gap:36px;align-items:start}

/* sticky toc */
.toc-card{
  position:sticky;top:96px;
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-card);
  padding:22px 20px;backdrop-filter:blur(6px);
}
.toc-card h3{font-size:13px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  position:relative;display:block;padding:10px 12px 10px 16px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:all var(--t);
}
.toc-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--primary);
  transition:height var(--t);
}
.toc-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.toc-link.is-current{color:var(--primary);font-weight:600}
.toc-link.is-current::before{height:18px;box-shadow:0 0 10px rgba(35,224,168,.7)}
.toc-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--glass-border);font-size:13px;color:var(--text-3)}

/* content blocks */
.block{
  border:1px solid var(--glass-border);
  background:var(--surface);
  border-radius:var(--r-card);
  padding:30px 32px;
  margin-bottom:24px;
  scroll-margin-top:96px;
  box-shadow:var(--shadow-card);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.block:hover{border-color:rgba(35,224,168,.28);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.block-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.block-num{
  flex:none;width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(35,224,168,.12);color:var(--primary);
  font-size:14px;font-weight:700;font-family:ui-monospace,monospace;
}
.block h2{font-size:24px;line-height:1.35;font-weight:700}
.block p{color:var(--text-2);font-size:16px;margin-bottom:14px;max-width:42em}
.block p:last-child{margin-bottom:0}
.block strong{color:var(--text);font-weight:600}
.figure{
  margin:22px 0 4px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--glass-border);
  position:relative;aspect-ratio:16/9;background:linear-gradient(100deg,#0E1524 20%,#162033 40%,#0E1524 62%);
  background-size:200% 100%;
  animation:skeleton 1.6s linear infinite;
}
.figure img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease)}
.figure:hover img{transform:scale(1.03)}
@keyframes skeleton{0%{background-position:120% 0}100%{background-position:-20% 0}}
.fig-cap{margin-top:10px;font-size:13px;color:var(--text-3);text-align:center}

.check-list{display:flex;flex-direction:column;gap:2px;margin-top:8px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 16px;border-radius:12px;
  border-bottom:1px solid rgba(255,255,255,.05);
  transition:background var(--t);
}
.check-item:last-child{border-bottom:0}
.check-item:hover{background:rgba(255,255,255,.025)}
.check-dot{
  flex:none;width:22px;height:22px;border-radius:7px;margin-top:3px;
  background:rgba(35,224,168,.14);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
}
.check-item .t{font-size:15px;color:var(--text);font-weight:600;margin-bottom:2px}
.check-item .d{font-size:14px;color:var(--text-2);line-height:1.75}

.note{
  display:flex;gap:14px;align-items:flex-start;
  border-left:3px solid var(--primary);
  background:rgba(35,224,168,.06);
  border-radius:0 12px 12px 0;
  padding:16px 18px;margin-top:18px;
}
.note svg{flex:none;width:18px;height:18px;color:var(--primary);margin-top:4px}
.note p{margin:0;font-size:14.5px;color:var(--text-2)}
.note.warn{border-left-color:var(--accent);background:rgba(255,106,43,.07)}
.note.warn svg{color:var(--accent)}

/* checklist cards */
.cards-asym{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;margin-top:26px}
.card{
  background:var(--glass);border:1px solid var(--glass-border);
  border-radius:var(--r-card);padding:24px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  box-shadow:var(--shadow-card);
}
.card:hover{transform:translateY(-2px);border-color:rgba(35,224,168,.4);box-shadow:var(--shadow-hover)}
.card-lg{grid-column:span 6}
.card-sm{grid-column:span 3}
.card h3{font-size:18px;font-weight:650;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--text-2)}
.card .tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  background:rgba(35,224,168,.12);color:var(--primary);margin-bottom:14px;
}
.card .tag.info{background:rgba(76,141,255,.12);color:var(--info)}
.card .tag.accent{background:rgba(255,106,43,.13);color:var(--accent)}
.card-cover{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;margin-bottom:16px;background:#0E1524}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}

/* faq */
.faq-wrap{margin-top:28px;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--glass-border);border-radius:var(--r-card);
  background:var(--glass);overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item.is-open{border-color:rgba(35,224,168,.4);background:rgba(35,224,168,.04)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 22px;text-align:left;
}
.faq-idx{
  flex:none;width:32px;height:32px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:700;font-family:ui-monospace,monospace;
  background:rgba(255,255,255,.05);color:var(--text-3);border:1px solid var(--glass-border);
  transition:all var(--t);
}
.faq-item.is-open .faq-idx{background:rgba(35,224,168,.14);color:var(--primary);border-color:rgba(35,224,168,.3)}
.faq-q span.txt{flex:1;font-size:16px;font-weight:600;color:var(--text)}
.faq-arrow{flex:none;width:18px;height:18px;color:var(--text-3);transition:transform var(--t),color var(--t)}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--primary)}
.faq-panel{
  max-height:0;overflow:hidden;
  transition:max-height 240ms var(--ease);
}
.faq-panel p{padding:0 22px 20px 68px;font-size:15px;color:var(--text-2);line-height:1.85}

/* cta */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--glass-border);border-bottom:1px solid var(--glass-border);
  padding:78px 0;text-align:center;
  background:var(--strip);
}
.cta-band::before{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,224,168,.10) 0%,rgba(35,224,168,0) 66%);
  pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 50%,#000 0%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 50% 50%,#000 0%,transparent 76%);
}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{font-size:30px;font-weight:700;line-height:1.35}
.cta-band p{margin-top:14px;color:var(--text-2);font-size:16px}
.cta-actions{margin-top:30px;display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}

/* footer */
.site-footer{border-top:1px solid var(--glass-border);background:#060911;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-brand em{font-style:normal;color:var(--primary)}
.footer-desc{font-size:14px;color:var(--text-3);max-width:26em;line-height:1.8}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);
  transition:all var(--t);
}
.footer-social a:hover{color:var(--primary);border-color:rgba(35,224,168,.45);transform:translateY(-2px)}
.footer-social svg{width:17px;height:17px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.sub-form{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.sub-form label{font-size:13px;color:var(--text-3)}
.sub-form input{
  height:42px;padding:0 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--glass-border);
  color:var(--text);font-size:14px;
  transition:border-color var(--t),box-shadow var(--t);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,224,168,.18)}
.sub-form .btn{width:100%}
.footer-bottom{
  margin-top:52px;padding:22px 0;
  border-top:1px solid var(--glass-border);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom .cp{font-size:13px;color:var(--text-3)}
.footer-bottom .links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.footer-bottom .links a{font-size:13px;color:var(--text-3);transition:color var(--t)}
.footer-bottom .links a:hover{color:var(--primary)}
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(10,16,28,.9);border:1px solid var(--primary);
  color:var(--primary);box-shadow:0 0 20px rgba(35,224,168,.28);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--t),visibility var(--t),transform var(--t);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(35,224,168,.12)}
.to-top svg{width:18px;height:18px}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{padding:0 28px}
}
@media (max-width:1024px){
  .nav-search input{width:150px}
  .split{grid-template-columns:1fr;gap:24px}
  .toc-card{position:relative;top:0}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-link{padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--glass-border)}
  .toc-link::before{display:none}
  .toc-link.is-current{background:rgba(35,224,168,.1);border-color:rgba(35,224,168,.35)}
  .toc-foot{display:none}
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .anchor-pills{justify-content:flex-start}
  .card-lg{grid-column:span 12}
  .card-sm{grid-column:span 6}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-channels,.nav-right .nav-search,.nav-right .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .nav-right .btn-primary{padding:10px 16px;font-size:13px}
  .brand{font-size:15.5px}
  .page-hero{padding:36px 0 34px}
  .page-hero h1{font-size:29px}
  .hero-sub{font-size:15px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .block{padding:22px 20px;border-radius:14px}
  .block h2{font-size:20px}
  .block p{font-size:15.5px}
  .block-head{gap:12px}
  .block-num{width:34px;height:34px;border-radius:10px;font-size:13px}
  .card-lg,.card-sm{grid-column:span 12}
  .card{padding:20px}
  .cta-band{padding:56px 0}
  .cta-band h2{font-size:23px}
  .cta-actions{flex-direction:column;gap:14px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-panel p{padding:0 18px 18px 18px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px}
  .brand{font-size:15px}
  .brand-mark{width:18px;height:18px}
  .check-item{padding:12px 10px}
  .note{padding:14px}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --surface:#0C1220;
  --band:#0A101C;
  --glass:rgba(255,255,255,.045);
  --stroke:rgba(255,255,255,.09);
  --topline:rgba(255,255,255,.14);
  --primary:#23E0A8;
  --primary-hi:#3BF0BC;
  --accent:#FF6A2B;
  --info:#4C8DFF;
  --text:#EAF0FF;
  --text-2:#A9B6CC;
  --text-3:#6B7A93;
  --ink:#04140F;
  --ok:#2BD97C;
  --warn:#FFB020;
  --err:#FF4D5E;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:64px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  border-bottom-color:var(--stroke);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.header-inner{
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:600;
  letter-spacing:.01em;
  color:var(--text);
  white-space:nowrap;
  flex-shrink:0;
}
.brand em{
  font-style:normal;
  color:var(--primary);
  font-weight:700;
}
.brand-mark{
  width:20px;height:20px;
  color:var(--primary);
  flex-shrink:0;
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link:hover::after{opacity:.5;transform:scaleX(1);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{
  opacity:1;
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(35,224,168,.65);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  width:200px;
  height:38px;
  padding:0 14px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--stroke);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),width .24s var(--ease);
}
.search-box svg{width:16px;height:16px;color:var(--text-3);flex-shrink:0;}
.search-box input{
  width:100%;
  border:0;
  background:transparent;
  padding:0 8px;
  font-size:14px;
  outline:none;
  color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(35,224,168,.18);
}
.search-box:focus-within svg{color:var(--primary);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:38px;
  padding:10px 22px;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:var(--primary);
  color:var(--ink);
  box-shadow:0 0 0 1px var(--primary),0 8px 28px rgba(35,224,168,.3);
}
.btn-primary:hover{
  background:var(--primary-hi);
  color:var(--ink);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px var(--primary-hi),0 10px 32px rgba(35,224,168,.45);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94);}
.btn-ghost{
  background:var(--glass);
  border-color:var(--stroke);
  color:var(--primary);
}
.btn-ghost:hover{
  border-color:rgba(35,224,168,.5);
  background:rgba(35,224,168,.08);
  color:var(--primary-hi);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  padding:8px 4px;
}
.btn-text:hover{color:var(--primary);}
.btn-text .arrow{transition:transform .2s var(--ease);}
.btn-text:hover .arrow{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{
  opacity:.45;
  box-shadow:none;
  pointer-events:none;
}
.drawer-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text);
}
.drawer-toggle svg{width:18px;height:18px;}

.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,7,13,.66);
  backdrop-filter:blur(3px);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(320px,84vw);
  height:100%;
  background:var(--surface);
  border-left:1px solid var(--stroke);
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  z-index:91;
  padding:22px 20px;
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:14px;
  border-bottom:1px solid var(--stroke);
}
.drawer-close{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--stroke);
  color:var(--text-2);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(35,224,168,.5);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  color:var(--primary);
  background:rgba(35,224,168,.08);
  border-color:rgba(35,224,168,.24);
}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.drawer-actions .btn{width:100%;min-height:46px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--stroke);
  background:var(--band);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.22;
  filter:saturate(.9);
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(600px 320px at 12% 0%,rgba(35,224,168,.16),transparent 70%),
    linear-gradient(180deg,rgba(7,11,20,.55),rgba(7,11,20,.94));
}
.hero-grid-lines{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  padding:52px 0 60px;
  z-index:2;
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{opacity:.6;}
.crumbs .current{color:var(--primary);}
.hero-top{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.hero-copy{max-width:660px;}
.page-hero h1{
  font-size:38px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.page-hero h1 .hl{color:var(--primary);}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
  max-width:560px;
}
.anchor-pills{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:0;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:40px;
  padding:9px 16px;
  border-radius:999px;
  font-size:13px;
  letter-spacing:.03em;
  color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--stroke);
  transition:all .2s var(--ease);
}
.pill:hover{
  color:var(--primary);
  border-color:rgba(35,224,168,.45);
  background:rgba(35,224,168,.09);
}
.pill.is-active{
  color:var(--ink);
  font-weight:600;
  background:var(--primary);
  border-color:var(--primary);
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section.tight{padding:64px 0;}
.section.band{
  background:var(--band);
  border-top:1px solid var(--stroke);
  border-bottom:1px solid var(--stroke);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--primary);
  opacity:.7;
}
.section-title{
  font-size:29px;
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.005em;
}
.section-title.sm{font-size:22px;}
.section-desc{
  margin-top:12px;
  font-size:16px;
  color:var(--text-2);
  max-width:640px;
}
.section-note{
  font-size:13px;
  color:var(--text-3);
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  background:rgba(35,224,168,.12);
  color:var(--primary);
}
.badge.info{background:rgba(76,141,255,.14);color:var(--info);}
.badge.warm{background:rgba(255,106,43,.14);color:var(--accent);}
.badge.mute{background:var(--glass);color:var(--text-2);border:1px solid var(--stroke);}

/* ---------- 步骤节点条 ---------- */
.step-rail{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  padding:30px 28px 26px;
  border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--stroke);
  overflow:hidden;
}
.step-rail::before{
  content:"";
  position:absolute;
  left:calc(12.5% + 28px);
  right:calc(12.5% + 28px);
  top:52px;
  height:1px;
  background:linear-gradient(90deg,rgba(35,224,168,.55),rgba(35,224,168,.12) 60%,rgba(76,141,255,.4));
}
.step-node{
  position:relative;
  z-index:1;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-right:8px;
}
.step-dot{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--band);
  border:1px solid rgba(35,224,168,.45);
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(35,224,168,.06);
  transition:all .24s var(--ease);
}
.step-node:hover .step-dot{
  background:rgba(35,224,168,.14);
  box-shadow:0 0 0 8px rgba(35,224,168,.12),0 0 22px rgba(35,224,168,.28);
}
.step-node h3{
  font-size:16px;
  font-weight:600;
}
.step-node p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-3);
}

/* ---------- 非对称卡网格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
}
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--topline),transparent);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(35,224,168,.42);
  box-shadow:var(--shadow-hover);
}
.card-lg{grid-column:span 3;}
.card-sm{grid-column:span 2;}
.media{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(110deg,rgba(35,224,168,.06) 20%,rgba(35,224,168,.16) 42%,rgba(35,224,168,.06) 64%);
  background-size:220% 100%;
  animation:shimmer 1.6s linear infinite;
}
@keyframes shimmer{
  0%{background-position:120% 0;}
  100%{background-position:-120% 0;}
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.card:hover .media img{transform:scale(1.03);}
.media-16x9{aspect-ratio:16/9;}
.media-4x3{aspect-ratio:4/3;}
.media-1x1{aspect-ratio:1/1;}
.card-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.card-title{
  font-size:19px;
  line-height:1.42;
  font-weight:600;
}
.card-sm .card-title{font-size:16px;}
.card-text{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}
.card-meta{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--stroke);
}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);}
.card-rows{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.row-item{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(255,255,255,.03);
  border:1px solid transparent;
  transition:all .2s var(--ease);
}
.row-item:hover{
  background:rgba(255,255,255,.06);
  border-color:rgba(35,224,168,.32);
  transform:translateY(-2px);
}
.row-item .num{
  font-size:12px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--primary);
  min-width:26px;
  padding-top:2px;
}
.row-item h4{font-size:15px;font-weight:600;}
.row-item p{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ---------- 左右交替图文 ---------- */
.split-row{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
}
.split-row.reverse .split-media{order:2;}
.split-row.reverse .split-body{order:1;}
.split-row + .split-row{margin-top:72px;}
.split-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--stroke);
  box-shadow:0 0 0 10px rgba(35,224,168,.05),var(--shadow);
}
.split-media .media{border-radius:var(--r-img);}
.split-body h3{
  font-size:22px;
  font-weight:700;
  line-height:1.4;
  margin:14px 0 14px;
}
.split-body p{
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:16px;
}
.tick-list{display:flex;flex-direction:column;gap:10px;margin:18px 0 22px;}
.tick-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(35,224,168,.6);
}

/* ---------- 数据条带 ---------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding:44px 36px;
  border-radius:var(--r-card);
  background:var(--band);
  border:1px solid var(--stroke);
}
.stat-item{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding-left:20px;
  border-left:2px solid rgba(35,224,168,.28);
}
.stat-num{
  font-size:40px;
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--text);
  letter-spacing:-.02em;
}
.stat-num .unit{
  font-size:14px;
  font-weight:500;
  color:var(--text-3);
  margin-left:4px;
  letter-spacing:.02em;
}
.stat-label{
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.03em;
}

/* ---------- FAQ ---------- */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
  max-width:920px;
}
.faq-item{
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--stroke);
  overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item.is-open{
  border-color:rgba(35,224,168,.42);
  background:rgba(35,224,168,.045);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 22px;
  text-align:left;
  font-size:16px;
  font-weight:500;
  color:var(--text);
}
.faq-num{
  flex-shrink:0;
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  font-size:12px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--primary);
  background:rgba(35,224,168,.1);
  border:1px solid rgba(35,224,168,.28);
}
.faq-arrow{
  margin-left:auto;
  width:18px;height:18px;
  color:var(--text-3);
  flex-shrink:0;
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a-inner{
  padding:0 22px 22px 70px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:84px 0;
  text-align:center;
  background:var(--band);
  border-top:1px solid var(--stroke);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(560px 300px at 50% 10%,rgba(35,224,168,.12),transparent 72%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,56px 56px,56px 56px;
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;}
.cta-inner h2{
  font-size:30px;
  font-weight:700;
  line-height:1.34;
  margin-bottom:14px;
}
.cta-inner p{
  font-size:16px;
  color:var(--text-2);
  margin-bottom:28px;
}
.cta-actions{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--stroke);
  padding:68px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-brand em{font-style:normal;color:var(--primary);font-weight:700;}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:var(--text-3);
  max-width:300px;
  margin-bottom:20px;
}
.footer-social{
  display:flex;
  gap:10px;
}
.footer-social a{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--stroke);
  background:var(--glass);
  color:var(--text-2);
  transition:all .2s var(--ease);
}
.footer-social a svg{width:16px;height:16px;}
.footer-social a:hover{
  color:var(--primary);
  border-color:rgba(35,224,168,.5);
  transform:translateY(-2px);
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.05em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text-3);
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-form{display:flex;flex-direction:column;gap:12px;margin-top:4px;}
.footer-form label{
  font-size:13px;
  color:var(--text-3);
}
.footer-form input{
  height:42px;
  padding:0 14px;
  border-radius:var(--r-btn);
  background:var(--glass);
  border:1px solid var(--stroke);
  font-size:14px;
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  width:100%;
}
.footer-form input::placeholder{color:var(--text-3);}
.footer-form input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(35,224,168,.18);
}
.footer-form .btn{width:100%;}
.qr-box{
  width:96px;height:96px;
  border-radius:12px;
  border:1px dashed var(--stroke);
  background:var(--glass);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--text-3);
  font-size:12px;
  letter-spacing:.06em;
  margin-top:14px;
}
.footer-bottom{
  border-top:1px solid var(--stroke);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;
  right:26px;
  bottom:26px;
  width:46px;height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(12,18,32,.9);
  border:1px solid rgba(35,224,168,.5);
  color:var(--primary);
  box-shadow:0 0 18px rgba(35,224,168,.22);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:all .24s var(--ease);
  z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(35,224,168,.14);transform:translateY(-2px);}
.to-top svg{width:18px;height:18px;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 28px;}
}
@media (max-width:1024px){
  :root{--sec:72px;}
  .nav-channels{display:none;}
  .drawer-toggle{display:inline-flex;}
  .search-box{width:170px;}
  .page-hero h1{font-size:34px;}
  .card-lg{grid-column:span 6;}
  .card-sm{grid-column:span 3;}
  .split-row{grid-template-columns:1fr;gap:32px;}
  .split-row.reverse .split-media{order:1;}
  .split-row.reverse .split-body{order:2;}
  .step-rail{grid-template-columns:repeat(2,1fr);}
  .step-rail::before{display:none;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:28px;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  :root{--sec:56px;}
  .container{padding:0 20px;}
  .search-box{display:none;}
  .header-actions{gap:10px;}
  .btn-text{display:none;}
  .page-hero h1{font-size:30px;}
  .hero-inner{padding:40px 0 46px;}
  .hero-sub{font-size:16px;}
  .section-title{font-size:24px;}
  .section-title.sm{font-size:20px;}
  .card-sm{grid-column:span 6;}
  .card-body{padding:20px;}
  .faq-a-inner{padding:0 20px 20px 20px;}
  .split-body h3{font-size:20px;}
  .cta-inner h2{font-size:24px;}
  .stat-num{font-size:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:27px;}
  .step-rail{grid-template-columns:1fr;padding:24px 20px;}
  .stat-band{grid-template-columns:1fr;padding:30px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .anchor-pills .pill{font-size:12px;padding:8px 13px;}
  .cta-actions .btn{width:100%;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:480px){
  .hero-top{gap:22px;}
  .card-title{font-size:17px;}
}