/* roulang page: index */
:root{
  --bg-base:#061014;
  --bg-sub:#0A1A22;
  --bg-raise:#0E222C;
  --primary:#1FE3A8;
  --primary-deep:#14B486;
  --accent:#FF7A45;
  --hot:#FFC53D;
  --text:#E8F2F5;
  --text-sub:#93AAB4;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);

  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-btn:12px;
  --r-pill:999px;

  --sh-rest:0 10px 30px rgba(0,0,0,.38);
  --sh-hover:0 18px 42px rgba(0,0,0,.52);
  --sh-glow:0 6px 22px rgba(31,227,168,.32);
  --sh-glow-hi:0 10px 32px rgba(31,227,168,.48);

  --bs-primary:#1FE3A8;
  --bs-body-bg:#061014;
  --bs-body-color:#E8F2F5;
  --bs-border-radius:18px;
  --bs-link-color:#1FE3A8;
  --bs-link-hover-color:#14B486;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg-base);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.55;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out}
a:hover{color:var(--primary-deep);text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
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:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;width:100%}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:68px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease-out,border-color .25s ease-out,backdrop-filter .25s ease-out;
}
.site-header.is-scrolled{
  background:rgba(6,16,20,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;flex:0 0 auto}
.brand:hover{text-decoration:none;color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;color:#062018;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:var(--sh-glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:15px;letter-spacing:.5px;color:var(--text)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:2px;color:var(--text-sub)}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  position:relative;padding:8px 14px;font-size:15px;color:var(--text-sub);
  border-radius:10px;white-space:nowrap;transition:color .2s ease-out,background .2s ease-out;
}
.nav-item:hover{color:var(--text);background:var(--glass);text-decoration:none}
.nav-item.active{color:var(--primary)}
.nav-item.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:14px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-cta{flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 22px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:var(--primary);color:#04211A;box-shadow:var(--sh-glow);
}
.btn-primary:hover{
  background:#3AECB8;color:#04211A;text-decoration:none;
  transform:translateY(-1px);box-shadow:var(--sh-glow-hi);
}
.btn-ghost{
  background:var(--glass);color:var(--primary);border-color:var(--line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.btn-ghost:hover{
  border-color:var(--primary);color:var(--primary);text-decoration:none;transform:translateY(-1px);
}
.btn-mini{min-height:36px;padding:6px 14px;font-size:13.5px;border-radius:10px}
.btn-ghost-sm{
  display:inline-flex;align-items:center;gap:6px;
  min-height:38px;padding:6px 14px;font-size:13.5px;font-weight:500;
  background:transparent;color:var(--text-sub);border:1px solid var(--line);border-radius:10px;
  cursor:pointer;transition:color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.btn-ghost-sm:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px);text-decoration:none}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:56px 0 64px;
  background:
    radial-gradient(900px 420px at 82% 6%,rgba(31,227,168,.14),transparent 62%),
    linear-gradient(180deg,rgba(6,16,20,0) 0%,rgba(6,16,20,.9) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;font-size:12.5px;letter-spacing:.5px;color:var(--primary);
  background:rgba(31,227,168,.12);border:1px solid rgba(31,227,168,.28);
  border-radius:var(--r-pill);
}
h1.hero-title{
  margin-top:20px;
  font-size:clamp(28px,4.6vw,44px);
  line-height:1.25;font-weight:700;letter-spacing:-.5px;
}
.hero-sub{
  margin-top:18px;max-width:620px;
  font-size:16.5px;line-height:1.85;color:var(--text-sub);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stats li{
  flex:1 1 130px;min-width:130px;
  padding:14px 16px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.hero-stats b{display:block;font-size:24px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stats span{display:block;margin-top:4px;font-size:13px;color:var(--text-sub)}

.hero-media{display:flex;justify-content:center}
.phone-card{
  position:relative;width:100%;max-width:320px;aspect-ratio:9/16;
  border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-raise);
  box-shadow:var(--sh-rest),inset 0 1px 0 rgba(255,255,255,.10);
}
.phone-card img{width:100%;height:100%;object-fit:cover}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,16,20,.15) 0%,rgba(6,16,20,0) 35%,rgba(6,16,20,.88) 100%);
}
.top-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;font-size:12.5px;color:var(--accent);
  background:rgba(255,122,69,.14);border:1px solid rgba(255,122,69,.35);
  border-radius:var(--r-pill);
}
.top-badge i{font-size:8px}
.play-dot{
  position:absolute;z-index:2;right:16px;bottom:74px;
  width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#04211A;font-size:15px;
  box-shadow:var(--sh-glow);
}
.play-dot.sm{width:34px;height:34px;right:10px;bottom:10px;font-size:12px}
.phone-foot{
  position:absolute;z-index:2;left:16px;right:16px;bottom:18px;
}
.phone-foot .bar{
  height:4px;border-radius:4px;background:rgba(255,255,255,.22);overflow:hidden;
}
.phone-foot .bar i{display:block;height:100%;background:var(--primary);border-radius:4px;box-shadow:0 0 12px rgba(31,227,168,.6)}
.phone-foot span{display:block;margin-top:8px;font-size:12.5px;color:var(--text-sub);font-variant-numeric:tabular-nums}
.float-tag{
  position:absolute;z-index:2;left:14px;bottom:64px;
  padding:5px 12px;font-size:12.5px;color:var(--hot);
  background:rgba(255,197,61,.13);border:1px solid rgba(255,197,61,.32);
  border-radius:var(--r-pill);
}

/* ---------- sections ---------- */
.section{padding:56px 0;position:relative;z-index:1}
.section-alt{background:linear-gradient(180deg,rgba(10,26,34,.72),rgba(6,16,20,0))}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;flex-wrap:wrap;margin-bottom:28px;
}
.sec-head h2{font-size:clamp(22px,3vw,30px);line-height:1.35}
.sec-sub{margin-top:8px;font-size:14.5px;color:var(--text-sub);max-width:640px}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14.5px;color:var(--primary);white-space:nowrap;
}
.link-more:hover{text-decoration:none;color:var(--primary-deep);gap:11px}
.link-more i{transition:transform .2s ease-out}

/* ---------- clip track ---------- */
.clip-track{
  display:flex;gap:16px;overflow-x:auto;padding:6px 2px 18px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  mask-image:linear-gradient(90deg,#000 0,#000 94%,transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,#000 0,#000 94%,transparent 100%);
}
.clip-track::-webkit-scrollbar{display:none}
.clip-card{
  flex:0 0 168px;scroll-snap-align:start;
  transition:transform .2s ease-out;
}
.clip-card:hover{transform:translateY(-2px)}
.clip-media{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-raise);
  box-shadow:var(--sh-rest);
}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.clip-card:hover .clip-media img{transform:scale(1.04)}
.clip-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,16,20,0) 45%,rgba(6,16,20,.85) 100%);
}
.dur{
  position:absolute;z-index:2;top:10px;left:10px;
  padding:3px 9px;font-size:12px;border-radius:var(--r-pill);
  background:rgba(6,16,20,.62);color:var(--text);border:1px solid var(--line);
  font-variant-numeric:tabular-nums;
}
.clip-card h3{
  margin-top:12px;font-size:15.5px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-meta{display:flex;align-items:center;gap:8px;margin-top:8px;font-size:13px;color:var(--text-sub)}

/* ---------- pill ---------- */
.pill{
  display:inline-flex;align-items:center;
  padding:3px 10px;font-size:12.5px;border-radius:var(--r-pill);
  background:rgba(31,227,168,.12);color:var(--primary);
  border:1px solid rgba(31,227,168,.24);white-space:nowrap;
}
.pill-warm{background:rgba(255,122,69,.12);color:var(--accent);border-color:rgba(255,122,69,.26)}
.pill-hot{background:rgba(255,197,61,.12);color:var(--hot);border-color:rgba(255,197,61,.26)}

/* ---------- list cards ---------- */
.pick-grid{display:grid;grid-template-columns:1fr;gap:16px}
.pick-card{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--sh-rest);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.pick-card:hover{transform:translateY(-2px);border-color:rgba(31,227,168,.35);box-shadow:var(--sh-hover)}
.pick-num{
  flex:0 0 auto;font-size:38px;font-weight:700;line-height:1;
  color:rgba(31,227,168,.20);font-variant-numeric:tabular-nums;
  letter-spacing:-2px;
}
.pick-body{flex:1 1 auto;min-width:0}
.pick-body h3{font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-body p{margin-top:8px;font-size:14px;color:var(--text-sub);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-foot{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap;font-size:13px;color:var(--text-sub)}
.pick-thumb{
  flex:0 0 96px;width:96px;aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:rgba(31,227,168,.08);
}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
@media(max-width:575.98px){
  .pick-card{flex-wrap:wrap}
  .pick-thumb{flex:1 1 100%;width:100%;aspect-ratio:16/9}
}

/* ---------- latest / cms ---------- */
.info-grid{display:grid;grid-template-columns:1fr;gap:16px}
.info-card{
  display:flex;flex-direction:column;
  padding:20px;border-radius:var(--r-card);
  background:rgba(14,34,44,.72);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-rest);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  min-height:100%;
}
.info-card:hover{transform:translateY(-2px);border-color:rgba(31,227,168,.35);box-shadow:var(--sh-hover)}
.info-title{
  font-size:16.5px;font-weight:600;line-height:1.55;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-title:hover{color:var(--primary)}
.info-desc{
  margin-top:10px;font-size:14px;color:var(--text-sub);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-sub);font-variant-numeric:tabular-nums;
}
.cms-empty{
  grid-column:1/-1;text-align:center;
  padding:52px 20px;border-radius:var(--r-card);
  background:var(--glass);border:1px dashed var(--line);
}
.cms-empty i{font-size:26px;color:rgba(31,227,168,.5)}
.cms-empty p{margin-top:12px;font-size:13.5px;color:var(--text-sub)}
.cms-empty .btn{margin-top:18px}

/* ---------- reviews ---------- */
.score-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.score-num{font-size:34px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1}
.stars{color:var(--hot);font-size:14px;letter-spacing:2px}
.score-row span{font-size:13.5px;color:var(--text-sub)}
.review-track{
  display:flex;gap:16px;overflow-x:auto;padding:6px 2px 16px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 268px;scroll-snap-align:start;
  padding:20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--sh-rest);
}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#04211A;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
}
.review-head b{display:block;font-size:14.5px;font-weight:600}
.review-head em{font-style:normal;font-size:12.5px;color:var(--text-sub)}
.review-body{margin-top:14px;font-size:14px;color:var(--text-sub);line-height:1.8}

/* ---------- cta band ---------- */
.cta-band{
  margin:56px 0 0;
  padding:34px 28px;border-radius:22px;
  background:
    radial-gradient(600px 240px at 88% 0%,rgba(31,227,168,.16),transparent 65%),
    rgba(255,255,255,.05);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--sh-rest);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);line-height:1.4}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-sub);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.guard-row{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:24px}
.guard-row li{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-sub)}
.guard-row i{color:var(--primary);font-size:13px}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{
  border-radius:16px;border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;position:relative;
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.faq-item:hover{border-color:rgba(31,227,168,.3)}
.faq-item[open]{border-color:rgba(31,227,168,.4)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:0;
  background:var(--primary);transition:width .2s ease-out;
}
.faq-item[open]::before{width:3px}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 54px 18px 22px;position:relative;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;
  transform:translateY(-50%);font-size:22px;font-weight:400;line-height:1;
  color:var(--primary);transition:transform .22s ease-out;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-answer{padding:0 22px 20px;font-size:14.5px;color:var(--text-sub);line-height:1.85}

/* ---------- footer ---------- */
.site-footer{
  margin-top:64px;padding:52px 0 0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,26,34,.6),rgba(6,16,20,0));
  position:relative;z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
.foot-brand p{margin-top:16px;font-size:13.5px;color:var(--text-sub);line-height:1.85;max-width:340px}
.foot-social{display:flex;gap:14px;margin-top:18px}
.foot-social a{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-sub);border:1px solid var(--line);background:var(--glass);
  font-size:15px;transition:color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.foot-social a:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);text-decoration:none}
.foot-col h4{font-size:14.5px;font-weight:600;letter-spacing:.5px;margin-bottom:16px}
.foot-col li{margin-bottom:10px}
.foot-col a,.foot-col span{font-size:13.5px;color:var(--text-sub)}
.foot-col a:hover{color:var(--primary);text-decoration:none}
.foot-bottom{
  margin-top:44px;padding:20px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-sub);
}

/* ---------- bottom tabs ---------- */
.bottom-tabs{display:none}

/* ---------- responsive ---------- */
@media(min-width:576px){
  .info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .clip-card{flex:0 0 190px}
}
@media(min-width:768px){
  .hero{padding:76px 0 84px}
  .section{padding:72px 0}
  .review-card{flex:0 0 300px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
  .cta-band{grid-template-columns:1.4fr 1fr;padding:44px 40px}
}
@media(min-width:992px){
  .hero-grid{grid-template-columns:1.1fr .9fr;gap:56px}
  .section{padding:88px 0}
  .info-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .clip-card{flex:0 0 208px}
}
@media(min-width:1200px){
  .hero{padding:92px 0 96px}
}
@media(max-width:991.98px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-wrap{gap:12px}
}
@media(max-width:767.98px){
  body{padding-bottom:72px}
  .bottom-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    height:58px;padding-bottom:env(safe-area-inset-bottom);
    background:rgba(6,16,20,.92);
    backdrop-filter:blur(14px) saturate(120%);
    -webkit-backdrop-filter:blur(14px) saturate(120%);
    border-top:1px solid var(--line);
  }
  .bottom-tabs a{
    flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:12px;color:var(--text-sub);position:relative;text-decoration:none;
  }
  .bottom-tabs a i{font-size:17px;line-height:1}
  .bottom-tabs a.active{color:var(--primary)}
  .bottom-tabs a.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:3px;border-radius:0 0 4px 4px;background:var(--primary);
    box-shadow:0 0 12px rgba(31,227,168,.6);
  }
  .bottom-tabs a:hover{text-decoration:none;color:var(--primary)}
  .hero-stats li{flex:1 1 100%;min-width:0}
  .phone-card{max-width:78vw}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .pick-card:hover,.info-card:hover,.clip-card:hover,.btn:hover,.foot-social a:hover{transform:none!important}
  .clip-card:hover .clip-media img{transform:none!important}
}

/* roulang page: article */
:root{
  --bg:#061014;
  --bg-2:#0A1A22;
  --bg-3:#0E222C;
  --primary:#1FE3A8;
  --primary-dark:#14B486;
  --accent:#FF7A45;
  --warn:#FFC53D;
  --text:#E8F2F5;
  --sub:#C6D8DF;
  --muted:#93AAB4;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.38);
  --shadow-hover:0 16px 38px rgba(0,0,0,.50);
  --glow:0 6px 22px rgba(31,227,168,.32);
  --glow-hover:0 8px 32px rgba(31,227,168,.48);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#1FE3A8;
  --bs-body-bg:#061014;
  --bs-body-color:#E8F2F5;
  --bs-border-radius:14px;
  --bs-link-color:#1FE3A8;
  --bs-link-hover-color:#5AF0C4;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{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",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.030) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.030) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 78%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 78%);
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:#5AF0C4;text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
main{position:relative;z-index:1}
::selection{background:rgba(31,227,168,.30);color:#fff}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  height:68px;display:flex;align-items:center;
  background:rgba(6,16,20,.35);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(6,16,20,.86);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
  box-shadow:0 8px 26px rgba(0,0,0,.36);
}
.nav-wrap{display:flex;align-items:center;gap:26px;width:100%}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none!important;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--primary),var(--primary-dark));
  color:#04140F;font-weight:800;font-size:19px;line-height:1;
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text strong{font-size:16px;color:var(--text);letter-spacing:.6px}
.brand-text em{font-style:normal;font-size:11px;color:var(--primary);letter-spacing:3.4px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-item{
  position:relative;padding:9px 14px;font-size:14.5px;color:var(--muted);
  border-radius:10px;text-decoration:none!important;transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-item:hover{color:var(--text);background:var(--glass);text-decoration:none}
.nav-item.active{color:var(--text)}
.nav-item.active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:14px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(31,227,168,.7);
}
.nav-cta{flex-shrink:0}

/* ============ Buttons ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#04140F!important;font-weight:700;
  border:0;border-radius:var(--r-btn);padding:12px 22px;font-size:15px;
  box-shadow:var(--glow);transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  text-decoration:none!important;cursor:pointer;line-height:1.2;
}
.btn-primary:hover{background:#38F0B8;transform:translateY(-1px);box-shadow:var(--glow-hover);text-decoration:none}
.btn-primary:active{transform:translateY(0)}
.btn-mini{padding:9px 16px;font-size:13.5px;border-radius:10px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--glass);color:var(--primary)!important;font-weight:600;
  border:1px solid var(--line);border-radius:var(--r-btn);padding:10px 18px;font-size:14px;
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
  text-decoration:none!important;cursor:pointer;line-height:1.3;
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,227,168,.10);transform:translateY(-1px);text-decoration:none}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--text)!important;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:11px 20px;font-size:14.5px;font-weight:600;
  transition:border-color .2s var(--ease),color .2s var(--ease);text-decoration:none!important;
}
.btn-line:hover{border-color:var(--primary);color:var(--primary)!important;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;
}

/* ============ Glass card ============ */
.glass{
  background:#0E222C;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
}
@supports ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){
  .glass{
    background:var(--glass);
    -webkit-backdrop-filter:blur(14px) saturate(120%);
    backdrop-filter:blur(14px) saturate(120%);
  }
}

/* ============ Pills ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;line-height:1;padding:7px 13px;border-radius:999px;
  background:rgba(31,227,168,.12);color:var(--primary);border:1px solid rgba(31,227,168,.22);
  white-space:nowrap;
}
.pill-warm{background:rgba(255,122,69,.13);color:#FFA37B;border-color:rgba(255,122,69,.26)}
.pill-warn{background:rgba(255,197,61,.13);color:var(--warn);border-color:rgba(255,197,61,.26)}

/* ============ Breadcrumb ============ */
.crumb{padding:22px 0 0;position:relative;z-index:2}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--muted)}
.crumb li{display:flex;align-items:center;gap:9px}
.crumb li+li::before{content:"/";color:rgba(31,227,168,.55)}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--primary);text-decoration:none}
.crumb .cur{color:var(--text)}

/* ============ Article hero ============ */
.article-hero{
  position:relative;
  margin-top:20px;
  padding:52px 0 46px;
  border:1px solid var(--line);
  border-radius:24px;
  overflow:hidden;
  background-image:
    linear-gradient(180deg,rgba(6,16,20,.78) 0%,rgba(6,16,20,.94) 60%,rgba(6,16,20,.99) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(31,227,168,.55),transparent);
  opacity:.7;
}
.hero-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.article-title{
  font-size:clamp(26px,4.2vw,42px);
  line-height:1.28;
  font-weight:700;
  color:var(--text);
  max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:16px;font-size:13.5px;color:var(--muted);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--primary);font-size:13px}

/* ============ Article body ============ */
.article-layout{padding:44px 0 0}
.article-body{
  max-width:800px;margin:0 auto;
  padding:38px 42px 46px;
  font-size:16.5px;line-height:1.92;color:var(--sub);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:clamp(20px,2.5vw,25px);line-height:1.4;font-weight:700;
  color:var(--text);margin:40px 0 14px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--primary);box-shadow:0 0 12px rgba(31,227,168,.5);
}
.article-body h3{font-size:18.5px;font-weight:600;color:var(--text);margin:28px 0 10px;line-height:1.5}
.article-body h4{font-size:16.5px;color:var(--text);margin:22px 0 8px}
.article-body img{width:100%;height:auto;border-radius:var(--r-img);margin:22px 0;border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;
  border-left:3px solid var(--primary);
  border-radius:0 14px 14px 0;
  background:rgba(255,255,255,.04);
  color:var(--muted);font-style:italic;
}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 20px}
.article-body ul{list-style:none;padding-left:4px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:10px}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body table{
  width:100%;max-width:100%;border-collapse:collapse;font-size:15px;
  display:block;overflow-x:auto;margin:22px 0;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:rgba(255,255,255,.05);color:var(--text);font-weight:600}
.article-body hr{width:48px;height:2px;border:0;background:var(--primary);opacity:.65;margin:34px 0;border-radius:2px}
.article-body code{
  background:rgba(31,227,168,.12);color:#7DF3CE;padding:2px 7px;border-radius:6px;font-size:14px;
}

/* ============ Empty state ============ */
.empty-state{
  max-width:800px;margin:0 auto;padding:60px 32px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-ico{
  width:64px;height:64px;border-radius:20px;display:grid;place-items:center;
  background:rgba(31,227,168,.10);border:1px solid rgba(31,227,168,.22);
  color:var(--primary);font-size:24px;
}
.empty-state h2{font-size:20px;color:var(--text)}
.empty-state p{font-size:13.5px;color:var(--muted);max-width:420px}

/* ============ Article foot ============ */
.article-foot{
  max-width:800px;margin:26px auto 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding-top:24px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:9px}
.ghost-actions{display:flex;flex-wrap:wrap;gap:10px}

/* ============ Section shell ============ */
.section{padding:60px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  flex-wrap:wrap;margin-bottom:26px;
}
.section-head h2{font-size:clamp(21px,2.8vw,29px);line-height:1.38;color:var(--text)}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px;max-width:620px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;
  color:var(--primary);margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--primary);border-radius:2px}

/* ============ Related cards ============ */
.grid-3{display:grid;grid-template-columns:1fr;gap:22px}
.rel-card{
  display:flex;flex-direction:column;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(31,227,168,.42);box-shadow:var(--shadow-hover);text-decoration:none}
.rel-thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:rgba(31,227,168,.08);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.rel-body h3{
  font-size:16.5px;line-height:1.5;color:var(--text);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{
  font-size:13.5px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-top:2px}

/* ============ CTA ============ */
.cta-band{
  margin-top:60px;padding:44px 40px;border-radius:24px;
  background:
    radial-gradient(120% 160% at 100% 0%,rgba(31,227,168,.16) 0%,rgba(31,227,168,0) 58%),
    rgba(255,255,255,.045);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.8vw,30px);line-height:1.38;max-width:620px}
.cta-band p{font-size:14.5px;color:var(--muted);margin-top:12px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.cta-badge i{color:var(--primary);font-size:12px}

/* ============ Footer ============ */
.site-footer{
  margin-top:84px;padding:56px 0 0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,26,34,.55),rgba(6,16,20,.95));
  position:relative;z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1fr;gap:38px;padding-bottom:42px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand > p{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:330px}
.foot-social{display:flex;gap:10px;margin-top:20px}
.foot-social a{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--muted);font-size:14px;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.foot-social a:hover{color:var(--primary);border-color:rgba(31,227,168,.45);transform:translateY(-2px);text-decoration:none}
.foot-col h4{font-size:14.5px;color:var(--text);margin-bottom:16px;letter-spacing:.6px}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col li a,.foot-col li span{font-size:13.5px;color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.foot-col li a:hover{color:var(--primary);text-decoration:none}
.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding:20px 0 24px;border-top:1px solid var(--line);
}
.foot-bottom p{font-size:12.5px;color:var(--muted)}

/* ============ Mobile tabbar ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;
  display:flex;height:58px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,26,34,.95);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  backdrop-filter:blur(16px) saturate(120%);
  border-top:1px solid var(--line);
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);text-decoration:none!important;position:relative;
  padding-top:4px;transition:color .2s var(--ease);white-space:nowrap;
}
.tab-item i{font-size:18px;line-height:1}
.tab-item:hover{color:var(--text);text-decoration:none}
.tab-item.active{color:var(--primary)}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
  box-shadow:0 0 12px rgba(31,227,168,.6);
}

/* ============ Responsive ============ */
@media (max-width:991px){
  .main-nav{display:none}
  .nav-cta{margin-left:auto}
}
@media (max-width:767px){
  body{padding-bottom:72px;font-size:15.5px}
  .container{padding-left:16px;padding-right:16px}
  .article-hero{padding:36px 0 32px;border-radius:20px;margin-top:14px}
  .article-body{padding:26px 20px 32px;font-size:16px;border-radius:16px}
  .section{padding:48px 0 0}
  .cta-band{padding:30px 22px;border-radius:20px}
  .article-foot{flex-direction:column;align-items:flex-start}
  .site-footer{margin-top:60px}
  .nav-cta .btn-mini{display:none}
}
@media (min-width:576px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:768px){
  .mobile-tabbar{display:none}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr}
}
@media (min-width:992px){
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .section{padding:84px 0 0}
  .article-layout{padding:56px 0 0}
}
@media (min-width:1200px){
  .container{max-width:1200px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .btn-primary:hover,.btn-ghost:hover,.rel-card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#061014;
  --bg-2:#0A1A22;
  --surface:#0E222C;
  --primary:#1FE3A8;
  --primary-dark:#14B486;
  --accent:#FF7A45;
  --hot:#FFC53D;
  --text:#E8F2F5;
  --text-2:#93AAB4;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.38);
  --glow:0 6px 22px rgba(31,227,168,.32);
  --s4:4px; --s8:8px; --s12:12px; --s16:16px; --s24:24px; --s32:32px; --s48:48px; --s64:64px;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-primary:var(--primary);
  --bs-border-radius:12px;
  --bs-link-color:var(--primary);
  --bs-link-hover-color:#4CF0BE;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:72px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  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:52px 52px;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:#4CF0BE;text-decoration:underline;}
h1,h2,h3,h4{margin:0 0 var(--s16);font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,3vw,30px);line-height:1.35;}
h3{font-size:19px;line-height:1.5;font-weight:600;}
p{margin:0 0 var(--s16);}
ul{list-style:none;padding:0;margin:0;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.section{padding:88px 0;position:relative;z-index:1;}
.section-sm{padding:56px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s24);margin-bottom:var(--s32);flex-wrap:wrap;}
.sec-head p{color:var(--text-2);font-size:14.5px;margin:6px 0 0;max-width:640px;}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);letter-spacing:1px;text-transform:uppercase;margin-bottom:10px;}
.sec-eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);border-radius:2px;display:inline-block;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  height:68px;
  display:flex;align-items:center;
  background:rgba(6,16,20,.35);
  border-bottom:1px solid transparent;
  transition:background .25s ease-out,border-color .25s ease-out,backdrop-filter .25s ease-out;
}
.site-header.scrolled{
  background:rgba(8,20,26,.86);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:var(--s24);}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-dark));
  color:#04211A;font-weight:800;font-size:19px;
  box-shadow:0 6px 18px rgba(31,227,168,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.5px;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-2);letter-spacing:2px;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-item{
  position:relative;
  padding:10px 14px;
  font-size:15px;color:var(--text-2);
  border-radius:10px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none;}
.nav-item.active{color:var(--text);font-weight:600;}
.nav-item.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:14px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-cta{display:flex;align-items:center;gap:10px;}
.btn-mini{padding:9px 16px;font-size:14px;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:var(--primary);color:#04211A;border-color:transparent;
  box-shadow:var(--glow);
}
.btn-primary:hover{background:#3DEDB8;color:#04211A;transform:translateY(-1px);box-shadow:0 8px 32px rgba(31,227,168,.4);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  background:var(--glass);color:var(--primary);border:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.btn-outline:hover{border-color:var(--primary);color:#4CF0BE;background:rgba(31,227,168,.08);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;color:var(--text-2);border:1px solid transparent;
  padding:8px 14px;font-size:14px;font-weight:500;
}
.btn-ghost:hover{color:var(--primary);border-color:var(--line);background:var(--glass);}

/* ===== Tags / badges ===== */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;line-height:1.6;
  background:rgba(31,227,168,.12);color:var(--primary);
  border:1px solid rgba(31,227,168,.18);
}
.pill-orange{background:rgba(255,122,69,.12);color:var(--accent);border-color:rgba(255,122,69,.2);}
.pill-hot{background:rgba(255,197,61,.12);color:var(--hot);border-color:rgba(255,197,61,.2);}
.tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--text-2);background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}

/* ===== Hero ===== */
.cat-hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(6,16,20,.72) 0%,rgba(6,16,20,.92) 55%,var(--bg) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.85;z-index:0;
}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:20px;}
.breadcrumb-nav a{color:var(--text-2);}
.breadcrumb-nav a:hover{color:var(--primary);}
.breadcrumb-nav .sep{color:var(--primary);}
.breadcrumb-nav .cur{color:var(--text);}
.cat-hero h1{max-width:820px;}
.cat-hero h1 .accent{color:var(--primary);}
.hero-lead{max-width:760px;color:var(--text-2);font-size:16.5px;line-height:1.9;margin-top:8px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.stat-chip{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:10px 20px;display:flex;align-items:baseline;gap:8px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
}
.stat-chip b{font-size:22px;color:var(--primary);font-variant-numeric:tabular-nums;}
.stat-chip span{font-size:13px;color:var(--text-2);}

/* ===== Layout with sticky toc ===== */
.cat-layout{
  display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start;
  margin-top:8px;
}
.toc{
  position:sticky;top:92px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 18px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.10);
}
.toc h4{font-size:13px;color:var(--text-2);letter-spacing:1.5px;margin-bottom:14px;font-weight:600;}
.toc a{
  display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:all .2s ease-out;text-decoration:none;
}
.toc a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.toc a.on{color:var(--primary);background:rgba(31,227,168,.09);border-left-color:var(--primary);}
.toc-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-2);line-height:1.7;}

/* ===== List cards ===== */
.list-stack{display:flex;flex-direction:column;gap:20px;}
.item-card{
  position:relative;
  display:grid;grid-template-columns:1fr 168px;gap:22px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 26px 26px 30px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.10);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  scroll-margin-top:96px;
  overflow:hidden;
}
.item-card:hover{transform:translateY(-2px);border-color:rgba(31,227,168,.35);box-shadow:0 16px 40px rgba(0,0,0,.45);}
.item-card .wmark{
  position:absolute;left:14px;top:8px;
  font-size:64px;font-weight:800;line-height:1;
  color:rgba(255,255,255,.05);font-variant-numeric:tabular-nums;pointer-events:none;
}
.item-body{position:relative;z-index:1;}
.item-body h3{margin-bottom:8px;font-size:19px;}
.item-body h3 .idx{color:var(--primary);font-size:14px;margin-right:8px;font-weight:700;letter-spacing:1px;}
.item-body p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:12px;}
.item-tags{display:flex;flex-wrap:wrap;gap:8px;}
.item-thumb{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;align-self:center;background:rgba(31,227,168,.08);
}
.item-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out;}
.item-card:hover .item-thumb img{transform:scale(1.04);}

/* ===== Clip rail ===== */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:18px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.clip-card{
  flex:0 0 220px;scroll-snap-align:start;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;position:relative;
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.10);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.clip-card:hover{transform:translateY(-2px);border-color:rgba(31,227,168,.35);}
.clip-media{position:relative;aspect-ratio:9/16;background:#0A1A22;overflow:hidden;}
.clip-media img{width:100%;height:100%;object-fit:cover;}
.clip-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(6,16,20,.92) 100%);}
.clip-dur{position:absolute;left:10px;top:10px;z-index:2;}
.clip-play{
  position:absolute;right:12px;bottom:12px;z-index:2;
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,227,168,.18);border:1px solid rgba(31,227,168,.5);
  color:var(--primary);font-size:12px;
  box-shadow:0 6px 18px rgba(31,227,168,.3);
}
.clip-info{padding:14px 16px 18px;}
.clip-info h3{font-size:16px;line-height:1.5;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-info span{font-size:13px;color:var(--text-2);}

/* ===== Commentary ===== */
.score-line{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:26px;}
.score-big{font-size:38px;font-weight:800;color:var(--primary);line-height:1;font-variant-numeric:tabular-nums;}
.stars{color:var(--hot);font-size:13px;letter-spacing:2px;}
.bubble{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;display:flex;gap:14px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
}
.avatar{
  width:40px;height:40px;flex:none;border-radius:50%;
  background:linear-gradient(140deg,rgba(31,227,168,.35),rgba(255,122,69,.3));
  display:flex;align-items:center;justify-content:center;color:var(--text);font-size:15px;font-weight:700;
}
.bubble-body{font-size:14.5px;line-height:1.75;color:var(--text-2);}
.bubble-body strong{display:block;color:var(--text);font-size:14px;margin-bottom:2px;font-weight:600;}
.bubble-body .stars{display:block;margin-bottom:6px;}

/* ===== FAQ ===== */
.accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;
  backdrop-filter:blur(14px) saturate(120%);
}
.accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 22px;position:relative;box-shadow:none!important;border:0;
}
.accordion-button::after{
  content:"+";background-image:none!important;
  font-size:20px;color:var(--primary);font-weight:400;
  display:flex;align-items:center;justify-content:center;
  width:22px;height:22px;line-height:1;
  transition:transform .22s ease-out;
}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(31,227,168,.05);}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--primary);opacity:0;border-radius:0 3px 3px 0;transition:opacity .2s ease-out;
}
.accordion-button:not(.collapsed)::before{opacity:1;}
.accordion-body{padding:2px 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ===== Subscribe / CTA ===== */
.cta-band{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:40px;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.10);
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{color:var(--text-2);font-size:15px;margin:0;}
.sub-form{display:flex;flex-direction:column;gap:12px;}
.sub-form label{font-size:13.5px;color:var(--text-2);}
.sub-row{display:flex;gap:10px;flex-wrap:wrap;}
.sub-row input{
  flex:1 1 200px;min-width:0;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-input);
  padding:12px 16px;color:var(--text);font-size:15px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.sub-row input::placeholder{color:rgba(147,170,180,.7);}
.sub-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,227,168,.16);}
.sub-note{font-size:12.5px;color:var(--text-2);}
.badges{display:flex;gap:20px;flex-wrap:wrap;margin-top:26px;}
.badge-item{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);}
.badge-item i{color:var(--primary);font-size:15px;}

/* ===== Footer ===== */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:56px 0 28px;
  position:relative;z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.foot-brand p{color:var(--text-2);font-size:14px;margin:16px 0 18px;max-width:320px;line-height:1.8;}
.foot-social{display:flex;gap:10px;}
.foot-social a{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;transition:all .2s ease-out;
}
.foot-social a:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);text-decoration:none;}
.foot-col h4{font-size:14.5px;margin-bottom:16px;letter-spacing:.5px;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul li a,.foot-col ul li span{font-size:14px;color:var(--text-2);}
.foot-col ul li a:hover{color:var(--primary);text-decoration:none;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p{margin:0;font-size:12.5px;color:var(--text-2);}

/* ===== Mobile tabbar ===== */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;align-items:stretch;
  height:58px;padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,26,34,.94);
  backdrop-filter:blur(14px) saturate(120%);
  border-top:1px solid var(--line);
}
.tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:12px;color:var(--text-2);position:relative;text-decoration:none;
}
.tabbar a i{font-size:17px;}
.tabbar a.on{color:var(--primary);}
.tabbar a.on::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
  box-shadow:0 0 14px rgba(31,227,168,.6);
}

/* ===== Responsive ===== */
@media (max-width:1199px){
  .cat-layout{grid-template-columns:210px 1fr;gap:26px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .cat-layout{grid-template-columns:1fr;}
  .toc{
    position:static;padding:14px;
  }
  .toc h4,.toc-foot{display:none;}
  .toc nav{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px;}
  .toc nav::-webkit-scrollbar{display:none;}
  .toc a{
    flex:0 0 auto;border-left:0;border:1px solid var(--line);
    border-radius:var(--r-pill);padding:7px 16px;font-size:13.5px;background:rgba(255,255,255,.04);
  }
  .toc a.on{background:rgba(31,227,168,.14);border-color:rgba(31,227,168,.4);}
  .cta-band{grid-template-columns:1fr;padding:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{padding-bottom:76px;}
  .main-nav{display:none;}
  .nav-cta{display:none;}
  .tabbar{display:flex;}
  .section{padding:56px 0;}
  .cat-hero{padding:40px 0 52px;}
  .hero-actions .btn{flex:1 1 auto;}
  .stat-chip{padding:8px 16px;}
  .stat-chip b{font-size:19px;}
  .item-card{grid-template-columns:1fr;padding:24px 20px;}
  .item-thumb{order:-1;aspect-ratio:16/9;}
  .clip-card{flex:0 0 172px;}
  .bubble{flex:0 0 268px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .cta-band{padding:26px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#061014;
  --bg-2:#0A1A22;
  --surface:#0E222C;
  --primary:#1FE3A8;
  --primary-deep:#14B486;
  --accent:#FF7A45;
  --hot:#FFC53D;
  --text:#E8F2F5;
  --text-2:#93AAB4;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);
  --radius:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.38);
  --shadow-hover:0 16px 38px rgba(0,0,0,.5);
  --glow:0 6px 22px rgba(31,227,168,.32);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;

  --bs-primary:#1FE3A8;
  --bs-body-bg:#061014;
  --bs-body-color:#E8F2F5;
  --bs-border-radius:14px;
  --bs-link-color:#1FE3A8;
  --bs-link-hover-color:#5CF1C2;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:72px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index: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:radial-gradient(circle at 50% 20%,rgba(0,0,0,.9),transparent 78%);
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:#5CF1C2;text-decoration:underline;}
h1,h2,h3,h4{font-weight:700;line-height:1.3;margin:0;color:var(--text);}
p{margin:0 0 var(--sp-4);color:var(--text-2);}
ul{padding-left:1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;position:relative;z-index:1;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .22s ease-out,border-color .22s ease-out,backdrop-filter .22s ease-out;
}
.site-header.is-solid{
  background:rgba(6,16,20,.84);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:var(--sp-3);
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex-shrink:0;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#04140F;
  font-weight:800;
  font-size:19px;
  box-shadow:var(--glow);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.4px;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--primary);letter-spacing:2px;}
.main-nav{
  display:none;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-item{
  position:relative;
  padding:8px 10px;
  font-size:13.5px;
  color:var(--text-2);
  white-space:nowrap;
  border-radius:10px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-item:hover{color:var(--text);background:var(--glass);text-decoration:none;}
.nav-item.active{color:var(--text);font-weight:600;}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:0;
  transform:translateX(-50%);
  width:14px;height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:var(--glow);
}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:var(--sp-2);}
.main-nav + .nav-cta{margin-left:var(--sp-3);}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-sm);
  font-weight:600;
  font-size:15px;
  padding:12px 22px;
  min-height:44px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  text-decoration:none;
  line-height:1.2;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:var(--primary);
  color:#04140F;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  background:#3FEBB8;
  color:#04140F;
  transform:translateY(-1px);
  box-shadow:0 10px 32px rgba(31,227,168,.45);
}
.btn-primary:active{transform:translateY(0);box-shadow:var(--glow);}
.btn-ghost{
  background:var(--glass);
  border-color:var(--line);
  color:var(--primary);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(31,227,168,.08);}
.btn-plain{
  background:transparent;
  color:var(--text-2);
  padding:8px 12px;
  font-size:14px;
  font-weight:500;
}
.btn-plain:hover{color:var(--primary);background:var(--glass);}
.btn-mini{
  padding:8px 14px;
  font-size:13.5px;
  min-height:38px;
  border-radius:10px;
}

/* ============ Breadcrumb ============ */
.crumb-bar{padding:22px 0 4px;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
  margin:0;
  list-style:none;
  padding:0;
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--primary);opacity:.7;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--text);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  margin:18px 0 var(--sp-7);
  min-height:340px;
  display:flex;
  align-items:flex-end;
  background-color:var(--surface);
  background-image:linear-gradient(100deg,rgba(6,16,20,.94) 0%,rgba(6,16,20,.72) 48%,rgba(6,16,20,.42) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(31,227,168,.10),transparent 42%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:clamp(24px,4vw,52px);
  max-width:720px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  background:rgba(31,227,168,.14);
  border:1px solid rgba(31,227,168,.32);
  color:var(--primary);
  font-size:12.5px;
  letter-spacing:.5px;
  margin-bottom:var(--sp-4);
}
.hero-tag .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(31,227,168,.18);
  animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;}
  50%{opacity:.35;}
}
.page-hero h1{
  font-size:clamp(28px,4.6vw,44px);
  line-height:1.25;
  letter-spacing:.5px;
  margin-bottom:var(--sp-3);
}
.page-hero h1 em{
  display:block;
  font-style:normal;
  font-size:clamp(15px,1.8vw,19px);
  font-weight:500;
  color:var(--primary);
  letter-spacing:1px;
  margin-top:12px;
}
.hero-sub{
  font-size:15.5px;
  color:#BFD3DA;
  max-width:560px;
  margin-bottom:var(--sp-5);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:var(--sp-5);}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;}
.pill-stat{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:7px 14px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  font-size:12.5px;
  color:var(--text-2);
}
.pill-stat b{
  font-size:17px;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}

/* ============ Sections ============ */
.section{padding:var(--sp-7) 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-3);
  margin-bottom:var(--sp-6);
}
.section-head h2{
  font-size:clamp(22px,3vw,30px);
  line-height:1.35;
}
.section-head p{margin:10px 0 0;font-size:15px;max-width:640px;}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:2px;
  color:var(--primary);
  margin-bottom:10px;
  text-transform:uppercase;
}
.section-link{font-size:14px;color:var(--primary);white-space:nowrap;}
.section-link:hover{text-decoration:underline;}

/* ============ Metric cards ============ */
.metric-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.metric-card{
  position:relative;
  padding:24px 22px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  overflow:hidden;
}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(31,227,168,.36);box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-hover);}
.metric-card::before{
  content:"";
  position:absolute;
  right:-30px;top:-30px;
  width:100px;height:100px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,227,168,.16),transparent 70%);
}
.metric-value{
  font-size:clamp(28px,4vw,38px);
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  letter-spacing:-.5px;
}
.metric-value small{font-size:15px;font-weight:600;margin-left:4px;color:var(--primary-deep);}
.metric-label{
  margin-top:10px;
  font-size:13px;
  color:var(--text-2);
  line-height:1.7;
}
.metric-title{
  font-size:15.5px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}

/* ============ Stagger rows ============ */
.stagger{display:grid;gap:var(--sp-7);}
.stagger-row{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--sp-5);
  align-items:center;
}
.stagger-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:16/10;
  background:var(--surface);
}
.stagger-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease-out;
}
.stagger-media:hover img{transform:scale(1.04);}
.stagger-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(6,16,20,.72));
  pointer-events:none;
}
.media-badge{
  position:absolute;
  left:14px;top:14px;
  z-index:2;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  background:rgba(255,122,69,.16);
  border:1px solid rgba(255,122,69,.36);
  color:var(--accent);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.stagger-body h3{
  font-size:19px;
  margin-bottom:10px;
}
.stagger-body p{font-size:15.5px;margin-bottom:var(--sp-3);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  background:rgba(31,227,168,.12);
  border:1px solid rgba(31,227,168,.24);
  color:var(--primary);
}
.tag.warm{background:rgba(255,122,69,.12);border-color:rgba(255,122,69,.26);color:var(--accent);}
.tag.gold{background:rgba(255,197,61,.12);border-color:rgba(255,197,61,.28);color:var(--hot);}

/* ============ Table ============ */
.table-scroll{
  overflow-x:auto;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
  -webkit-overflow-scrolling:touch;
}
table.data-table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.data-table th,
table.data-table td{
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
  line-height:1.75;
}
table.data-table thead th{
  font-size:13px;
  letter-spacing:1px;
  color:var(--text-2);
  background:rgba(10,26,34,.72);
  font-weight:600;
  white-space:nowrap;
}
table.data-table tbody tr{transition:background .2s ease-out;}
table.data-table tbody tr:hover{background:rgba(31,227,168,.06);}
table.data-table tbody tr:last-child td{border-bottom:none;}
table.data-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap;}
table.data-table td strong{color:var(--primary);font-weight:600;}
.table-note{margin-top:12px;font-size:13px;color:var(--text-2);}

/* ============ Assurance strip ============ */
.assure-strip{
  margin-top:var(--sp-6);
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
.assure-item{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:18px 20px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.assure-item i{
  color:var(--primary);
  font-size:20px;
  margin-top:4px;
}
.assure-item h3{font-size:16px;margin-bottom:6px;}
.assure-item p{font-size:13.5px;margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--line) !important;
  border-radius:16px !important;
  overflow:hidden;
  margin-bottom:12px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:18px 22px;
  box-shadow:none !important;
  transition:color .2s ease-out,background .2s ease-out;
}
.accordion-button:not(.collapsed){
  color:var(--primary);
  background:rgba(31,227,168,.06);
  box-shadow:inset 3px 0 0 var(--primary) !important;
}
.accordion-button:focus{box-shadow:inset 3px 0 0 var(--primary) !important;border-color:transparent;}
.accordion-button::after{
  background-image:none !important;
  content:"+";
  font-size:22px;
  line-height:1;
  width:24px;height:24px;
  display:grid;place-items:center;
  color:var(--text-2);
  transition:transform .22s ease-out,color .22s ease-out;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--primary);}
.accordion-body{
  padding:4px 22px 20px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
  padding:clamp(26px,4vw,48px);
  overflow:hidden;
  margin-bottom:var(--sp-7);
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-60px;bottom:-80px;
  width:240px;height:240px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,227,168,.22),transparent 68%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr;
  gap:var(--sp-5);
  align-items:center;
}
.cta-inner h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:10px;}
.cta-inner p{margin:0;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-badges{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  margin-top:var(--sp-6);
  padding-top:var(--sp-5);
  border-top:1px solid var(--line);
}
.cta-badges span{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--text-2);
}
.cta-badges i{color:var(--primary);font-size:15px;}

/* ============ Footer ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,26,34,.6),rgba(6,16,20,.95));
  padding:var(--sp-7) 0 var(--sp-5);
  position:relative;
  z-index:1;
}
.foot-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--sp-6);
}
.foot-brand p{font-size:14px;margin:16px 0;max-width:340px;}
.foot-social{display:flex;gap:10px;}
.foot-social a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:15px;
  transition:color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.foot-social a:hover{color:var(--primary);border-color:rgba(31,227,168,.4);transform:translateY(-2px);}
.foot-col h4{font-size:15px;margin-bottom:16px;letter-spacing:.5px;}
.foot-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.foot-col li{font-size:14px;color:var(--text-2);}
.foot-col a{color:var(--text-2);}
.foot-col a:hover{color:var(--primary);}
.foot-bottom{
  margin-top:var(--sp-7);
  padding-top:var(--sp-5);
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
}
.foot-bottom p{font-size:12.5px;margin:0;color:var(--text-2);}

/* ============ Mobile tab bar ============ */
.tab-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  height:58px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:rgba(10,26,34,.94);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11.5px;
  color:var(--text-2);
  text-decoration:none;
}
.tab-item:hover{text-decoration:none;color:var(--text);}
.tab-item i{font-size:19px;}
.tab-item.active{color:var(--primary);}
.tab-item.active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:28px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--primary);
  box-shadow:var(--glow);
}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ Breakpoints ============ */
@media (min-width:576px){
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .assure-strip{grid-template-columns:1fr;}
}
@media (min-width:768px){
  body{padding-bottom:0;}
  .tab-bar{display:none;}
  .main-nav{display:flex;}
  .nav-cta{margin-left:var(--sp-3);}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .stagger-row{grid-template-columns:1fr 1fr;gap:var(--sp-6);}
  .cta-inner{grid-template-columns:1.4fr .9fr;justify-items:start;}
  .cta-actions{justify-self:end;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}
}
@media (min-width:992px){
  .nav-item{font-size:15px;padding:8px 14px;}
  .metric-grid{grid-template-columns:repeat(4,1fr);}
  .stagger{gap:var(--sp-8);}
  .stagger-row:nth-child(even) .stagger-media{order:2;}
  .assure-strip{grid-template-columns:repeat(3,1fr);}
  .section{padding:var(--sp-8) 0;}
}
@media (min-width:1200px){
  .container{max-width:1200px;}
  .page-hero{min-height:420px;}
}
@media (max-width:767px){
  .page-hero{margin-top:12px;min-height:auto;background-position:center right;}
  .hero-actions .btn{flex:1 1 100%;}
  .foot-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg:#061014;
  --bg-2:#0A1A22;
  --surface:#0E222C;
  --primary:#1FE3A8;
  --primary-dark:#14B486;
  --accent:#FF7A45;
  --hot:#FFC53D;
  --text:#E8F2F5;
  --muted:#93AAB4;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.38);
  --shadow-hover:0 16px 38px rgba(0,0,0,.48);
  --glow:0 6px 22px rgba(31,227,168,.32);
  --s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:96px;
  --bs-primary:#1FE3A8;
  --bs-body-bg:#061014;
  --bs-body-color:#E8F2F5;
  --bs-border-radius:14px;
}
*,*::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","Helvetica Neue",Arial,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-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 88%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 88%);
  opacity:.75;
}
.site-header,.mobile-tab,.site-footer,main{position:relative;z-index:1}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out}
a:hover{color:#5CFFCB;text-decoration:underline}
h1,h2,h3,h4{color:var(--text);font-weight:700;letter-spacing:.2px;margin:0}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:68px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease-out,border-color .25s ease-out,backdrop-filter .25s ease-out;
}
.site-header.scrolled{
  background:rgba(6,16,20,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:var(--s5);width:100%}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(160deg,var(--primary),var(--primary-dark));
  color:#04211A;font-weight:800;font-size:19px;
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:15.5px;color:var(--text);letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--primary);letter-spacing:2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-item{
  position:relative;
  padding:8px 14px;
  font-size:15px;color:var(--muted);
  border-radius:10px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-item:hover{color:var(--text);background:var(--glass);text-decoration:none}
.nav-item.active{color:var(--text);font-weight:600}
.nav-item.active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:14px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-cta{display:flex;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:var(--primary);color:#04211A;box-shadow:var(--glow);
}
.btn-primary:hover{background:#3FF0B8;box-shadow:0 8px 32px rgba(31,227,168,.42);color:#04211A}
.btn-ghost{
  background:var(--glass);color:var(--primary);border-color:var(--line);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--primary);color:#5CFFCB;background:rgba(31,227,168,.08)}
.btn-ghost-sm{
  background:transparent;color:var(--muted);border-color:transparent;
  padding:8px 12px;min-height:40px;font-size:14px;font-weight:500;
}
.btn-ghost-sm:hover{color:var(--primary);background:var(--glass);border-color:var(--line)}
.btn-mini{min-height:40px;padding:8px 18px;font-size:14px}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 4px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin:0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--primary);opacity:.7}
.crumb .current{color:var(--text);font-weight:600}

/* ---------- 通用玻璃卡 ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .glass{background:var(--surface)}
}

/* ---------- 分类 Hero ---------- */
.page-hero{padding:8px 0 0}
.hero-band{
  position:relative;overflow:hidden;
  border-radius:22px;
  border:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(6,16,20,.62),rgba(6,16,20,.92)),url("/assets/images/backpic/back-3.png");
  background-size:cover,cover;
  background-position:center,center 22%;
  padding:clamp(28px,5vw,56px);
}
.hero-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(31,227,168,.55),transparent);
}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:1.6px;color:var(--primary);
  background:rgba(31,227,168,.12);
  border:1px solid rgba(31,227,168,.28);
  border-radius:999px;padding:5px 14px;margin:0 0 18px;
}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;font-weight:700;margin:0 0 16px}
.lede{font-size:16.5px;line-height:1.85;color:var(--muted);max-width:760px;margin:0 0 26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.fact{
  display:flex;align-items:baseline;gap:8px;
  padding:10px 18px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.fact b{font-size:20px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.fact span{font-size:13px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,3vw,30px);line-height:1.35}
.section-head p{color:var(--muted);font-size:15px;margin:10px 0 0;max-width:640px}
.section-more{font-size:14px;color:var(--primary);white-space:nowrap}

/* ---------- 步骤流（时间轴） ---------- */
.steps{display:flex;flex-direction:column;gap:22px}
.step{display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start}
.step-node{
  position:relative;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--primary);
  background:rgba(31,227,168,.10);
  border:1px solid rgba(31,227,168,.45);
  box-shadow:0 0 0 6px rgba(31,227,168,.06);
}
.step-node::after{
  content:"";position:absolute;left:50%;top:56px;transform:translateX(-50%);
  width:2px;height:calc(100% + 30px);
  background:linear-gradient(180deg,rgba(31,227,168,.45),rgba(31,227,168,.06));
}
.step:last-child .step-node::after{display:none}
.step-card{padding:24px 26px;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.step-card:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.10),var(--shadow-hover);border-color:rgba(31,227,168,.32)}
.step-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:10px}
.step-head h3{font-size:18px;line-height:1.5}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;padding:4px 12px;border-radius:999px;
  color:var(--primary);background:rgba(31,227,168,.12);
  border:1px solid rgba(31,227,168,.24);white-space:nowrap;
}
.tag.accent{color:var(--accent);background:rgba(255,122,69,.12);border-color:rgba(255,122,69,.26)}
.tag.hot{color:var(--hot);background:rgba(255,197,61,.12);border-color:rgba(255,197,61,.26)}
.step-card p{color:var(--muted);font-size:15.5px;margin:0 0 14px}
.step-list{display:flex;flex-wrap:wrap;gap:10px}
.step-list li{
  font-size:13.5px;color:var(--text);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:999px;padding:5px 14px;
  display:flex;align-items:center;gap:7px;
}
.step-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);flex:0 0 5px}

/* ---------- 竖屏视频网格 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.video-card{
  position:relative;display:block;
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  aspect-ratio:9/16;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,227,168,.34);text-decoration:none}
.video-card img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.video-card:hover img{transform:scale(1.04)}
.video-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,16,20,.15) 0%,rgba(6,16,20,.10) 42%,rgba(6,16,20,.93) 100%);
}
.vc-time{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:12.5px;padding:3px 10px;border-radius:999px;
  background:rgba(6,16,20,.68);border:1px solid var(--line);
  color:var(--text);font-variant-numeric:tabular-nums;
}
.vc-play{
  position:absolute;right:12px;bottom:78px;z-index:2;
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(31,227,168,.92);color:#04211A;font-size:12px;
  box-shadow:var(--glow);
}
.vc-info{position:absolute;left:14px;right:14px;bottom:14px;z-index:2}
.vc-info h3{
  font-size:16px;line-height:1.45;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:6px;
}
.vc-info span{font-size:12.5px;color:var(--muted);display:block}
.vc-progress{height:3px;border-radius:3px;background:rgba(255,255,255,.16);overflow:hidden;margin-bottom:10px}
.vc-progress i{display:block;height:100%;width:46%;background:var(--primary);border-radius:3px}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  margin-bottom:14px;
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .faq-accordion .accordion-item{background:var(--surface)}
}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);
  font-size:16.5px;font-weight:600;line-height:1.6;
  padding:20px 22px;
  box-shadow:none;border:0;
  display:flex;align-items:center;gap:16px;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:rgba(31,227,168,.05)}
.faq-accordion .accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;
  width:auto;height:auto;font-size:13px;color:var(--primary);
  transform:rotate(0deg);transition:transform .22s ease-out;
  margin-left:auto;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px}
.faq-accordion .accordion-body{
  padding:0 22px 22px 22px;color:var(--muted);font-size:15.5px;line-height:1.85;
  border-left:3px solid transparent;margin-left:22px;padding-left:19px;
}
.faq-accordion .accordion-collapse.show .accordion-body,
.faq-accordion .accordion-collapse.collapsing .accordion-body{border-left-color:var(--primary)}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:88px;
  padding:clamp(26px,4vw,44px);
  border-radius:22px;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(31,227,168,.10),rgba(255,122,69,.07)),var(--surface);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.6vw,27px);line-height:1.4;margin-bottom:8px}
.cta-band p{color:var(--muted);font-size:15px;margin:0;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-badges{display:flex;gap:20px;flex-wrap:wrap;margin-top:22px}
.cta-badges span{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted)}
.cta-badges i{color:var(--primary);font-size:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  padding:64px 0 30px;
  border-top:1px solid var(--line);
  background:rgba(10,26,34,.6);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{color:var(--muted);font-size:14px;line-height:1.8;max-width:320px}
.foot-social{display:flex;gap:10px;margin-top:18px}
.foot-social a{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--muted);font-size:15px;
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.foot-social a:hover{color:var(--primary);border-color:rgba(31,227,168,.4);transform:translateY(-2px);text-decoration:none}
.foot-col h4{font-size:15px;margin-bottom:16px;letter-spacing:.4px}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col li a,.foot-col li span{font-size:14px;color:var(--muted)}
.foot-col li a:hover{color:var(--primary)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p{margin:0;font-size:13px;color:var(--muted)}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:58px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,26,34,.94);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-top:1px solid var(--line);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;color:var(--muted);position:relative;
}
.mobile-tab a i{font-size:19px;line-height:1}
.mobile-tab a:hover{text-decoration:none;color:var(--text)}
.mobile-tab a.active{color:var(--primary)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
  box-shadow:0 0 12px rgba(31,227,168,.6);
}

/* ---------- 动效/响应式 ---------- */
.reveal{opacity:0;transform:translateY(8px)}
.reveal.in{opacity:1;transform:none;transition:opacity .5s ease-out,transform .5s ease-out}

@media (max-width:1199px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .main-nav{gap:0}
  .nav-item{padding:8px 10px;font-size:14px}
}
@media (max-width:767px){
  body{padding-bottom:72px}
  .site-header{height:62px}
  .main-nav{display:none}
  .nav-cta{margin-left:auto}
  .btn-label{display:none}
  .btn-mini{min-height:40px;width:40px;padding:0}
  .mobile-tab{display:flex}
  .section{padding:56px 0 0}
  .cta-band{margin-top:56px}
  .site-footer{margin-top:64px;padding-top:48px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
  .video-grid{grid-template-columns:1fr;max-width:320px;margin:0 auto}
  .step{grid-template-columns:44px 1fr;gap:14px}
  .step-node{width:38px;height:38px;font-size:13.5px}
  .step-node::after{top:46px}
  .step-card{padding:18px 18px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-band{padding:24px 20px}
  .fact{padding:8px 14px}
  .fact b{font-size:17px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .video-card:hover img,.btn:hover{transform:none}
}