/* roulang page: index */
:root{
  --ink:#1B1035;
  --ink-deep:#120A26;
  --coral:#FF5C39;
  --gold:#FFC24B;
  --sand:#F6F3EE;
  --card:#FFFFFF;
  --band:#EFEAE2;
  --text:#1A1420;
  --muted:#5B5566;
  --faint:#8A8394;
  --line:#E6E0D8;
  --line-soft:#ECE6DD;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-sm:0 8px 24px rgba(27,16,53,.08);
  --shadow-lg:0 16px 36px rgba(27,16,53,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--coral)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:3px;border-radius:6px}
.container{max-width:var(--container);padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--band{background:var(--band)}
.section--white{background:var(--card)}
.section--dark{background:var(--ink-deep);color:#F3EFF8}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-title{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.4px;color:var(--ink)}
.section--dark .sec-title{color:#FFF6EA}
.sec-sub{font-size:14px;color:var(--muted);margin-top:8px}
.section--dark .sec-sub{color:#B9B0CB}
.sec-link{font-size:14px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--gold);padding-bottom:2px}
.sec-link:hover{color:var(--coral);border-color:var(--coral)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:var(--header-h);
  background:rgba(246,243,238,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(6px);
}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(150deg,var(--ink) 0%,#2C1B57 100%);
  display:flex;align-items:center;justify-content:center;color:var(--gold);
  box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--ink)}
.brand-sub{font-size:10px;letter-spacing:2.4px;color:var(--faint);font-weight:600}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{
  position:relative;font-size:15px;font-weight:600;color:var(--text);
  padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
  border-radius:2px;
}
.main-nav a:hover::after,.main-nav a:focus-visible::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--ink)}
.main-nav a.is-active::after{transform:scaleX(1);background:var(--coral)}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease);
}
.btn-primary{background:var(--ink);color:#FFF6EA;box-shadow:var(--shadow-sm)}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--ink-deep);color:#FFF6EA;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--coral);color:#2A0E05}
.btn-accent:hover,.btn-accent:focus-visible{background:#FF7255;color:#2A0E05;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,92,57,.32)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover,.btn-ghost:focus-visible{background:rgba(27,16,53,.06);color:var(--ink);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#F3EFF8;border-color:rgba(243,239,248,.5)}
.btn-outline-light:hover,.btn-outline-light:focus-visible{background:rgba(243,239,248,.12);color:#FFF6EA;transform:translateY(-2px)}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:var(--card);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,10,38,.55);opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:1050;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;background:var(--card);
  z-index:1051;transform:translateX(100%);transition:transform .34s var(--ease);
  display:flex;flex-direction:column;padding:22px 22px 32px;overflow-y:auto;
  box-shadow:-16px 0 40px rgba(18,10,38,.2);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  padding:13px 12px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;color:var(--text);
}
.drawer-nav a:hover,.drawer-nav a:focus-visible{background:var(--band);color:var(--ink)}
.drawer-nav a.is-active{background:rgba(255,92,57,.1);color:var(--coral)}
.drawer-cta{margin-top:22px}
.drawer-foot{margin-top:auto;padding-top:26px;font-size:13px;color:var(--faint);line-height:1.9}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(105deg,rgba(18,10,38,.94) 0%,rgba(27,16,53,.86) 52%,rgba(27,16,53,.66) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#F6F2FA;
  padding:78px 0 84px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(2px 2px at 18% 24%,rgba(255,194,75,.7),transparent 60%),
                   radial-gradient(1.6px 1.6px at 62% 12%,rgba(255,255,255,.6),transparent 60%),
                   radial-gradient(1.8px 1.8px at 84% 46%,rgba(255,194,75,.5),transparent 60%),
                   radial-gradient(1.4px 1.4px at 34% 78%,rgba(255,255,255,.45),transparent 60%),
                   radial-gradient(1.6px 1.6px at 72% 86%,rgba(255,194,75,.4),transparent 60%);
  opacity:.75;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy{max-width:560px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  background:rgba(255,194,75,.14);border:1px solid rgba(255,194,75,.4);
  color:var(--gold);font-size:13px;font-weight:600;letter-spacing:.4px;margin-bottom:22px;
}
.hero h1{
  font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;color:#FFF9F1;
}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero-sub{font-size:16.5px;line-height:1.85;color:#C9C0DA;margin-top:20px;max-width:520px}
.hero-actions{display:flex;align-items:center;gap:16px;margin-top:32px;flex-wrap:wrap}
.hero-link{font-size:15px;font-weight:600;color:#F3EFF8;border-bottom:2px solid var(--coral);padding-bottom:2px}
.hero-link:hover{color:var(--gold);border-color:var(--gold)}
.hero-badges{display:flex;gap:10px;margin-top:34px;flex-wrap:wrap}
.hero-badges span{
  font-size:13px;color:#D6CEE6;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(243,239,248,.22);background:rgba(243,239,248,.06);
}
.hero-covers{display:flex;gap:18px;justify-content:flex-end;align-items:center}
.hero-cover{
  position:relative;width:calc(33.33% - 12px);border-radius:var(--radius-md);overflow:hidden;
  aspect-ratio:9/16;box-shadow:0 18px 40px rgba(8,4,18,.5);
  transition:transform .45s var(--ease);
}
.hero-cover img{width:100%;height:100%;object-fit:cover}
.hero-cover:nth-child(2){transform:translateY(-14px)}
.hero-cover:hover{transform:translateY(-8px)}
.hero-cover:nth-child(2):hover{transform:translateY(-22px)}
.cover-badge{
  position:absolute;left:10px;bottom:10px;font-size:11px;font-weight:700;
  color:#1A1420;background:rgba(255,194,75,.92);padding:3px 9px;border-radius:8px;letter-spacing:.3px;
}

/* ---------- 片段卡 ---------- */
.clip-scroll{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.clip-card{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s var(--ease);
}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#DCD4C8}
.clip-media{position:relative;aspect-ratio:9/16;overflow:hidden;background:var(--ink)}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.clip-card:hover .clip-media img{transform:scale(1.04)}
.clip-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;background:rgba(18,10,38,.55);
  display:flex;align-items:center;justify-content:center;color:#FFF6EA;
  border:1px solid rgba(255,246,234,.4);
}
.clip-play svg{width:18px;height:18px;margin-left:3px}
.clip-time{
  position:absolute;right:10px;bottom:10px;font-size:11px;font-weight:700;color:#FFF6EA;
  background:rgba(18,10,38,.72);padding:3px 8px;border-radius:8px;
}
.clip-body{padding:16px 18px 18px}
.clip-body h3{font-size:16px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:48px}
.clip-hot{display:flex;align-items:center;gap:6px;margin-top:12px;font-size:13px;color:var(--faint)}
.clip-hot svg{width:14px;height:14px;color:var(--coral)}

/* ---------- 清单 ---------- */
.list-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.list-item{
  display:flex;align-items:center;gap:22px;padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .3s var(--ease);
}
.list-num{
  flex:0 0 auto;font-size:34px;font-weight:800;line-height:1;letter-spacing:-1px;
  color:transparent;-webkit-text-stroke:1.4px var(--ink);min-width:56px;
}
.list-item:nth-child(odd) .list-num{-webkit-text-stroke:1.4px #C9A24A}
.list-main{flex:1;min-width:0}
.list-main h3{font-size:19px;font-weight:600;color:var(--ink);margin-bottom:6px}
.list-main p{font-size:14px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-thumb{flex:0 0 auto;width:88px;height:88px;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line-soft)}
.list-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.list-item:hover .list-thumb img{transform:scale(1.06)}
.list-item:hover .list-main h3{color:var(--coral)}

/* ---------- 资讯卡 ---------- */
.news-card{
  height:100%;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#DCD4C8}
.news-cover{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--band)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge-tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;
  background:rgba(27,16,53,.07);color:var(--ink);letter-spacing:.3px;
}
.badge-tag--gold{background:rgba(255,194,75,.22);color:#7A5A0E}
.news-body h3{font-size:19px;font-weight:600;line-height:1.5;margin:14px 0 10px;color:var(--ink)}
.news-body h3 a{color:inherit}
.news-body h3 a:hover{color:var(--coral)}
.news-body p{font-size:14px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:auto;padding-top:18px;font-size:13px;color:var(--faint)}
.news-meta span{display:inline-flex;align-items:center;gap:5px}
.empty-state{
  text-align:center;background:var(--card);border:1px dashed var(--line);
  border-radius:var(--radius-lg);padding:56px 24px;box-shadow:var(--shadow-sm);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;background:var(--band);color:var(--ink);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state a{font-weight:600;color:var(--ink);border-bottom:2px solid var(--gold)}

/* ---------- 口碑 ---------- */
.voice-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 18px;
  scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none;
}
.voice-scroll::-webkit-scrollbar{display:none}
.voice-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.voice-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(145deg,#2C1B57,#1B1035);color:var(--gold);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.voice-name{font-size:15px;font-weight:600;color:var(--ink)}
.voice-role{font-size:12px;color:var(--faint)}
.stars{display:flex;gap:3px;margin:16px 0 10px;color:var(--gold)}
.stars svg{width:15px;height:15px}
.voice-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.voice-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.voice-tags span{font-size:12px;color:var(--ink);background:var(--band);padding:3px 10px;border-radius:999px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-deep);color:#FFF6EA;
  padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(2px 2px at 12% 30%,rgba(255,194,75,.55),transparent 60%),
                   radial-gradient(1.6px 1.6px at 44% 18%,rgba(255,255,255,.5),transparent 60%),
                   radial-gradient(1.8px 1.8px at 78% 62%,rgba(255,194,75,.45),transparent 60%),
                   radial-gradient(1.5px 1.5px at 92% 22%,rgba(255,255,255,.4),transparent 60%);
  opacity:.85;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:28px;font-weight:700;line-height:1.35;letter-spacing:-.3px}
.cta-inner p{font-size:14.5px;color:#BEB4D0;margin-top:8px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-sm);position:relative;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--coral);
  transform:scaleY(0);transform-origin:top;transition:transform .3s var(--ease);
}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-item.is-open{border-color:#DBD2C5;box-shadow:var(--shadow-lg)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-q:hover{color:var(--coral)}
.faq-arrow{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--band);color:var(--ink);
  display:flex;align-items:center;justify-content:center;transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-arrow svg{width:12px;height:12px}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);background:rgba(255,92,57,.15);color:var(--coral)}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.85}
.faq-item.is-open .faq-a{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:#BEB4D0;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand-name{color:#FFF6EA}
.footer-brand .brand-sub{color:#7E7492}
.footer-desc{font-size:14px;line-height:1.9;margin-top:18px;max-width:330px;color:#A79BBD}
.footer-col h4{font-size:15px;font-weight:700;color:#FFF6EA;margin-bottom:18px;letter-spacing:.4px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:#BEB4D0}
.footer-col a:hover{color:var(--gold)}
.footer-contact li{font-size:14px;line-height:1.8;color:#A79BBD}
.footer-contact strong{color:#FFF6EA;font-weight:600}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(243,239,248,.14);
  padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#8B80A0;
}
.back-top{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:#BEB4D0}
.back-top:hover{color:var(--gold)}
.back-top svg{width:14px;height:14px}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;display:none;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 24px rgba(27,16,53,.08);
}
.mobile-tabs ul{display:flex;align-items:stretch;justify-content:space-between}
.mobile-tabs li{flex:1}
.mobile-tabs a{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:11px;font-weight:600;color:var(--faint);padding:4px 0 2px;
}
.mobile-tabs a svg{width:22px;height:22px}
.mobile-tabs a.is-active{color:var(--ink)}
.mobile-tabs a.is-active::before{
  content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--ink);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .clip-scroll{grid-template-columns:repeat(4,1fr);gap:18px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-covers{justify-content:flex-start;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none}
  .hero-covers::-webkit-scrollbar{display:none}
  .hero-cover{flex:0 0 180px;scroll-snap-align:start;width:180px}
  .hero-cover:nth-child(2){transform:none}
  .hero-cover:hover,.hero-cover:nth-child(2):hover{transform:translateY(-6px)}
  .clip-scroll{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:14px;-ms-overflow-style:none;scrollbar-width:none}
  .clip-scroll::-webkit-scrollbar{display:none}
  .clip-card{flex:0 0 220px;scroll-snap-align:start}
  .list-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:72px 0}
  .cta-inner h2{font-size:24px}
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .mobile-tabs{display:block}
  .voice-card{flex:0 0 280px}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:30px;line-height:1.32}
  .hero-sub{font-size:15px;margin-top:16px}
  .hero-actions{gap:12px;margin-top:26px}
  .hero-actions .btn{width:100%}
  .hero-link{display:inline-block}
  .hero-badges{margin-top:24px}
  .hero-cover{flex:0 0 150px;width:150px}
  .sec-title{font-size:24px}
  .sec-head{margin-bottom:28px}
  .section{padding:56px 0}
  .clip-card{flex:0 0 200px}
  .list-item{gap:16px;padding:20px 0}
  .list-num{font-size:28px;min-width:44px}
  .list-thumb{width:72px;height:72px}
  .list-main h3{font-size:17px}
  .voice-card{flex:0 0 84%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-band{padding:44px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-q{padding:17px 18px;font-size:15.5px}
  .faq-a{padding:0 18px 18px}
  .news-body{padding:18px}
  .brand-name{font-size:16px}
  .brand-sub{font-size:9px;letter-spacing:2px}
}

/* roulang page: category1 */
:root{
  --ink:#1B1035;
  --ink-deep:#120A26;
  --coral:#FF5C39;
  --star:#FFC24B;
  --sand:#F6F3EE;
  --sand-2:#EFEAE2;
  --card:#FFFFFF;
  --text:#1A1420;
  --muted:#5B5566;
  --faint:#8A8394;
  --line:#E6E0D8;
  --line-2:#ECE6DD;
  --r-card:20px;
  --r-img:14px;
  --r-btn:999px;
  --r-badge:8px;
  --r-input:12px;
  --sh-1:0 8px 24px rgba(27,16,53,.08);
  --sh-2:0 16px 36px rgba(27,16,53,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--coral);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--sand-2);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.3px;
}
.section-head .lead{
  max-width:560px;
  margin-top:10px;
  font-size:15px;
  color:var(--muted);
}
.section-head .link-more{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
  transition:border-color .25s var(--ease),color .25s var(--ease);
}
.section-head .link-more:hover{border-color:var(--coral);color:var(--coral);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(246,243,238,.96);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:var(--ink);
  color:var(--star);
  display:grid;place-items:center;
  transition:transform .4s var(--ease);
}
.brand-mark svg{width:20px;height:20px;}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.04);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.4px;color:var(--ink);}
.brand-sub{font-size:11px;color:var(--faint);letter-spacing:1.6px;}
.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;
  padding:9px 12px;
  font-size:15px;
  color:var(--muted);
  border-radius:10px;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;
  bottom:2px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--ease);
}
.main-nav a:hover{color:var(--ink);background:rgba(27,16,53,.045);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:transform .3s var(--ease),background .3s var(--ease),color .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.btn-primary{background:var(--ink);color:#FFF9F2;box-shadow:0 6px 16px rgba(27,16,53,.16);}
.btn-primary:hover{background:var(--ink-deep);color:#FFF9F2;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(27,16,53,.2);}
.btn-accent{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(255,92,57,.28);}
.btn-accent:hover{background:#F04A27;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,92,57,.34);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:transparent;border:1px solid rgba(27,16,53,.35);color:var(--ink);}
.btn-ghost:hover{background:rgba(27,16,53,.06);color:var(--ink);transform:translateY(-2px);}
.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.45);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-block{width:100%;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--card);
  align-items:center;
  justify-content:center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .3s var(--ease);
}
.nav-toggle span::before{transform:translateY(-6px);}
.nav-toggle span::after{transform:translateY(4px);}

/* 抽屉 */
.drawer{
  position:fixed;
  top:0;right:0;
  width:84%;
  max-width:340px;
  height:100%;
  background:var(--sand);
  z-index:1060;
  padding:24px 22px 40px;
  overflow-y:auto;
  transform:translateX(102%);
  transition:transform .38s var(--ease);
  box-shadow:-12px 0 40px rgba(18,10,38,.18);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:40px;height:40px;border-radius:50%;
  background:var(--card);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink);
}
.drawer-close svg{width:16px;height:16px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-nav a{
  padding:13px 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--text);
  background:var(--card);
  border:1px solid var(--line-2);
  transition:background .25s var(--ease),transform .25s var(--ease),color .25s var(--ease);
}
.drawer-nav a:hover{background:#fff;transform:translateX(4px);color:var(--ink);}
.drawer-nav a.is-active{background:var(--ink);color:#FFF7EC;border-color:var(--ink);font-weight:700;}
.drawer-cta{display:flex;flex-direction:column;gap:12px;}
.drawer-note{margin-top:22px;font-size:13px;color:var(--faint);line-height:1.8;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(18,10,38,.55);
  z-index:1050;
  opacity:0;
  visibility:hidden;
  transition:opacity .35s var(--ease),visibility .35s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumbs{
  padding:20px 0 0;
  font-size:13px;
  color:var(--faint);
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
}
.crumbs a{color:var(--faint);}
.crumbs a:hover{color:var(--coral);}
.crumbs .sep{color:#C7BFB4;}
.crumbs .now{color:var(--ink);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  margin-top:20px;
  padding:76px 0 84px;
  color:#fff;
  background:
    radial-gradient(circle at 18% 22%, rgba(255,194,75,.09) 0 2px, transparent 2px),
    radial-gradient(circle at 72% 34%, rgba(255,255,255,.07) 0 1.5px, transparent 1.5px),
    radial-gradient(circle at 42% 78%, rgba(255,194,75,.08) 0 2px, transparent 2px),
    linear-gradient(115deg, rgba(18,10,38,.94) 0%, rgba(27,16,53,.86) 52%, rgba(27,16,53,.72) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  background-color:var(--ink-deep);
  border-radius:0;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,194,75,.5),transparent);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-btn);
  background:rgba(255,194,75,.14);
  border:1px solid rgba(255,194,75,.4);
  color:var(--star);
  font-size:13px;
  font-weight:600;
  margin-bottom:22px;
}
.hero h1{
  font-size:44px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.5px;
  margin-bottom:18px;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  max-width:540px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges span{
  font-size:13px;
  color:rgba(255,255,255,.86);
  padding:6px 13px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
}
.hero-media{position:relative;}
.hero-media .frame{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.4);
  border:1px solid rgba(255,255,255,.14);
  aspect-ratio:4/3.1;
}
.hero-media .frame img{width:100%;height:100%;object-fit:cover;}
.hero-media .live-dot{
  position:absolute;
  top:16px;left:16px;
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;
  border-radius:var(--r-btn);
  background:rgba(18,10,38,.78);
  color:#fff;
  font-size:12px;
  font-weight:600;
  letter-spacing:.5px;
}
.hero-media .live-dot i{
  width:7px;height:7px;border-radius:50%;
  background:var(--coral);
  box-shadow:0 0 0 4px rgba(255,92,57,.25);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(255,92,57,.35);}
  50%{box-shadow:0 0 0 6px rgba(255,92,57,0);}
}
.hero-media .float-card{
  position:absolute;
  right:-14px;bottom:-22px;
  width:min(230px,72%);
  background:var(--card);
  color:var(--text);
  border-radius:16px;
  padding:14px 16px;
  box-shadow:0 18px 40px rgba(0,0,0,.32);
  border:1px solid var(--line-2);
}
.float-card .fc-label{font-size:11px;letter-spacing:1.4px;color:var(--faint);}
.float-card .fc-value{font-size:20px;font-weight:800;color:var(--ink);line-height:1.3;margin-top:2px;font-variant-numeric:tabular-nums;}
.float-card .fc-desc{font-size:12px;color:var(--muted);margin-top:2px;}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.stat{
  background:var(--card);
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.stat .num{
  font-size:30px;
  font-weight:800;
  letter-spacing:-.5px;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat .num em{font-style:normal;font-size:15px;font-weight:600;color:var(--coral);margin-left:4px;}
.stat .label{font-size:13px;color:var(--muted);margin-top:6px;}

/* ============ 说明区 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:start;
}
.intro-copy p{
  color:var(--muted);
  font-size:16px;
  line-height:1.9;
  margin-bottom:20px;
}
.intro-copy p strong{color:var(--ink);font-weight:700;}
.point-list{display:flex;flex-direction:column;gap:14px;}
.point{
  display:flex;
  gap:16px;
  padding:20px;
  background:var(--card);
  border:1px solid var(--line-2);
  border-radius:16px;
  box-shadow:var(--sh-1);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
.point:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#DED6CA;}
.point .idx{
  flex-shrink:0;
  width:38px;height:38px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(255,194,75,.16);
  color:#8A5B00;
  font-weight:800;
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.point h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:4px;}
.point p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ============ 交替行 + 粘性侧栏 ============ */
.split-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;
  align-items:start;
}
.altrows{display:flex;flex-direction:column;gap:28px;}
.altrow{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease);
}
.altrow:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.altrow.reverse .alt-media{order:2;}
.alt-media{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/11;
  background:var(--sand-2);
}
.alt-media img{
  width:100%;height:100%;
  transition:transform .6s var(--ease);
}
.altrow:hover .alt-media img{transform:scale(1.03);}
.alt-body .kicker{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:1.4px;
  color:var(--coral);
  margin-bottom:8px;
}
.alt-body h3{
  font-size:19px;
  font-weight:700;
  line-height:1.5;
  margin-bottom:10px;
}
.alt-body p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.85;
}
.alt-body .mini-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-block;
  font-size:12.5px;
  padding:4px 12px;
  border-radius:var(--r-btn);
  background:rgba(27,16,53,.06);
  color:var(--ink);
  font-weight:600;
}
.tag.orange{background:rgba(255,92,57,.12);color:#B6371A;}
.tag.star{background:rgba(255,194,75,.22);color:#7A5200;}

.sticky-wrap{position:sticky;top:calc(var(--header-h) + 24px);display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:9px;
}
.side-card h3::before{
  content:"";
  width:4px;height:16px;
  border-radius:2px;
  background:var(--coral);
}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}
.side-list li svg{
  width:16px;height:16px;
  flex-shrink:0;
  margin-top:5px;
  color:var(--ink);
}
.side-card .btn{margin-top:18px;}
.side-note{
  margin-top:14px;
  font-size:12.5px;
  color:var(--faint);
  line-height:1.7;
}
.side-dark{
  background:var(--ink-deep);
  color:#fff;
  border-color:transparent;
  background-image:radial-gradient(circle at 80% 15%, rgba(255,194,75,.14) 0 2px, transparent 2px),radial-gradient(circle at 20% 70%, rgba(255,255,255,.1) 0 1.5px, transparent 1.5px);
}
.side-dark h3{color:#fff;}
.side-dark h3::before{background:var(--star);}
.side-dark p{font-size:13.5px;color:rgba(255,255,255,.78);line-height:1.8;}
.side-dark .btn{margin-top:16px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line-2);
  border-radius:16px;
  padding:0;
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item[open]{border-color:#DCD3C6;box-shadow:0 12px 30px rgba(27,16,53,.1);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:4px;
  border-radius:0 3px 3px 0;
  background:var(--coral);
  transform:scaleY(0);
  transform-origin:center;
  transition:transform .3s var(--ease);
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-item summary .chev{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line);
  display:grid;place-items:center;
  color:var(--muted);
  transition:transform .35s var(--ease),background .35s var(--ease),color .35s var(--ease);
}
.faq-item summary .chev svg{width:12px;height:12px;}
.faq-item[open] summary .chev{transform:rotate(180deg);background:var(--ink);color:#fff;border-color:var(--ink);}
.faq-body{
  padding:0 22px 22px 26px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.9;
}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  background:var(--ink-deep);
  color:#fff;
  padding:56px 0;
  overflow:hidden;
  background-image:
    radial-gradient(circle at 12% 30%, rgba(255,194,75,.12) 0 2px, transparent 2px),
    radial-gradient(circle at 78% 62%, rgba(255,255,255,.09) 0 1.5px, transparent 1.5px),
    radial-gradient(circle at 46% 12%, rgba(255,92,57,.12) 0 2px, transparent 2px);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:28px;
  font-weight:800;
  line-height:1.4;
  letter-spacing:-.3px;
  margin-bottom:8px;
}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.76);max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 返回首页 ============ */
.back-home{
  display:flex;
  justify-content:center;
  padding:40px 0 8px;
}
.back-home a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  padding:10px 20px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.back-home a:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:#D9D0C3;color:var(--ink);}
.back-home svg{width:15px;height:15px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.78);
  padding:72px 0 28px;
  margin-top:12px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-text{margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;font-size:17px;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:330px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .25s var(--ease),transform .25s var(--ease);display:inline-block;}
.footer-col a:hover{color:var(--star);transform:translateX(3px);}
.footer-contact li{font-size:13px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:600;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:12.5px;
  color:rgba(255,255,255,.48);
}
.footer-bottom a.back-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:rgba(255,255,255,.7);
}
.footer-bottom a.back-top:hover{color:var(--star);}
.back-top svg{width:14px;height:14px;}

/* ============ 移动底部 Tab ============ */
.tabbar{display:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .split-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px;}
}

@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .hero{padding:60px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:34px;}
  .hero-media .frame{aspect-ratio:16/10;}
  .hero-media .float-card{right:10px;bottom:-18px;}
  .section{padding:72px 0;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .split-layout{grid-template-columns:1fr;}
  .sticky-wrap{position:static;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner h2{font-size:24px;}
}

@media (max-width:767px){
  body{padding-bottom:calc(84px + env(safe-area-inset-bottom));}
  .container{padding-left:18px;padding-right:18px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .hero{margin-top:14px;padding:48px 0 56px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .altrow{grid-template-columns:1fr;padding:20px;gap:20px;}
  .altrow.reverse .alt-media{order:0;}
  .alt-media{aspect-ratio:16/10;}
  .stats{grid-template-columns:1fr 1fr;gap:12px;}
  .stat{padding:18px;}
  .stat .num{font-size:25px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px 22px;font-size:14px;}
  .cta-band{padding:44px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .tabbar{
    display:flex;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:1035;
    background:#fff;
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -6px 20px rgba(27,16,53,.06);
  }
  .tabbar a{
    position:relative;
    flex:1;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    padding:9px 2px 8px;
    font-size:11px;
    color:var(--faint);
    line-height:1.3;
    transition:color .25s var(--ease);
  }
  .tabbar a svg{width:22px;height:22px;}
  .tabbar a::before{
    content:"";
    position:absolute;
    top:0;left:50%;
    transform:translateX(-50%) scaleX(0);
    width:22px;height:3px;
    border-radius:0 0 3px 3px;
    background:var(--ink);
    transition:transform .3s var(--ease);
  }
  .tabbar a.is-active{color:var(--ink);font-weight:700;}
  .tabbar a.is-active::before{transform:translateX(-50%) scaleX(1);}
}

@media (max-width:519px){
  .hero h1{font-size:27px;letter-spacing:-.3px;}
  .hero-badges span{font-size:12px;padding:5px 11px;}
  .stats{grid-template-columns:1fr;}
  .hero-media .float-card{position:static;width:100%;margin-top:14px;}
  .alt-body h3{font-size:17px;}
}

/* roulang page: article */
:root{
    --ink:#1B1035;
    --ink-deep:#120A26;
    --coral:#FF5C39;
    --gold:#FFC24B;
    --paper:#F6F3EE;
    --surface:#FFFFFF;
    --surface-soft:#EFEAE2;
    --text:#1A1420;
    --text-soft:#5B5566;
    --text-muted:#8A8394;
    --line:#E6E0D8;
    --line-soft:#ECE6DD;
    --radius-xl:24px;
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:12px;
    --shadow:0 8px 24px rgba(27,16,53,.08);
    --shadow-lg:0 16px 36px rgba(27,16,53,.14);
    --container:1200px;
    --header-h:72px;
    --font:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
    margin:0;
    padding-top:var(--header-h);
    background:var(--paper);
    color:var(--text);
    font-family:var(--font);
    font-size:16px;
    line-height:1.85;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease,opacity .25s ease}
img{max-width:100%;display:block;object-fit:cover}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--text)}
p{margin:0 0 20px}
a:focus-visible,button:focus-visible,.btn:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:none;
    box-shadow:0 0 0 3px rgba(255,92,57,.35);
}
.container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
}
.section{padding:80px 0}
.section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:18px;
    margin-bottom:26px;
}
.section-head h2{
    font-size:30px;
    font-weight:700;
    letter-spacing:-.2px;
}
.section-head a{
    font-size:14px;
    font-weight:700;
    color:var(--coral);
    white-space:nowrap;
}
.section-head a:hover{color:var(--ink)}

/* Header */
.site-header{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:1000;
    height:var(--header-h);
    background:rgba(246,243,238,.96);
    border-bottom:1px solid var(--line);
}
.header-inner{
    height:var(--header-h);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
}
.brand{
    display:flex;
    align-items:center;
    gap:10px;
    min-width:max-content;
}
.brand-mark{
    width:38px;
    height:38px;
    border-radius:12px;
    background:var(--ink);
    color:var(--gold);
    display:grid;
    place-items:center;
    box-shadow:0 4px 12px rgba(27,16,53,.18);
    flex:none;
}
.brand-mark svg{width:21px;height:21px}
.brand-text{
    display:flex;
    flex-direction:column;
    line-height:1.15;
}
.brand-name{
    font-size:17px;
    font-weight:800;
    letter-spacing:.02em;
    color:var(--ink);
}
.brand-sub{
    font-size:11px;
    color:var(--text-muted);
    letter-spacing:.08em;
}
.main-nav{
    display:flex;
    align-items:center;
    gap:22px;
}
.main-nav > a{
    position:relative;
    font-size:14px;
    font-weight:600;
    color:var(--text-soft);
    padding:8px 0;
    white-space:nowrap;
}
.main-nav > a::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:0;
    height:2px;
    border-radius:2px;
    background:var(--ink);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .25s ease;
}
.main-nav > a:hover{color:var(--ink)}
.main-nav > a:hover::after,
.main-nav > a.is-active::after{transform:scaleX(1)}
.main-nav > a.is-active{color:var(--ink)}
.main-nav .mobile-nav-cta{display:none}
.header-actions{
    display:flex;
    align-items:center;
    gap:12px;
}

/* Buttons */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 22px;
    border-radius:999px;
    border:1px solid transparent;
    font-size:14px;
    font-weight:700;
    line-height:1;
    cursor:pointer;
    transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--ink-deep);border-color:var(--ink-deep);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-accent{background:var(--coral);color:#fff;border-color:var(--coral)}
.btn-accent:hover{background:#e94a29;border-color:#e94a29;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,92,57,.24)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:rgba(27,16,53,.06);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:#f4efe8;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:13px}
.nav-toggle{
    display:none;
    width:44px;
    height:44px;
    border:1px solid var(--line);
    background:#fff;
    border-radius:12px;
    align-items:center;
    justify-content:center;
    padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
    display:block;
    width:20px;
    height:2px;
    background:var(--ink);
    border-radius:2px;
    transition:transform .3s ease,background .3s ease;
}
.nav-toggle span{position:relative}
.nav-toggle span::before{content:"";position:absolute;top:-6px;left:0}
.nav-toggle span::after{content:"";position:absolute;top:6px;left:0}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-overlay{
    position:fixed;
    inset:0;
    z-index:990;
    background:rgba(18,10,38,.55);
    opacity:0;
    pointer-events:none;
    transition:opacity .3s ease;
}
body.nav-open .nav-overlay{opacity:1;pointer-events:auto}

/* Article hero */
.article-hero{
    position:relative;
    overflow:hidden;
    background:var(--ink-deep);
    color:#fff;
    padding:56px 0 104px;
}
.article-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:
        linear-gradient(110deg,rgba(18,10,38,.95) 0%,rgba(27,16,53,.92) 55%,rgba(27,16,53,.86) 100%),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1px);
    background-size:26px 26px;
    opacity:.08;
    pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:rgba(255,255,255,.64);
    margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{color:rgba(255,255,255,.4)}
.badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    font-weight:600;
    line-height:1;
    padding:8px 12px;
    border-radius:999px;
    background:var(--surface-soft);
    color:var(--ink);
    border:1px solid transparent;
}
.badge-soft{
    background:rgba(255,194,75,.14);
    color:var(--gold);
    border-color:rgba(255,194,75,.28);
}
.article-hero h1{
    font-size:44px;
    font-weight:800;
    line-height:1.25;
    letter-spacing:-.5px;
    color:#fff;
    margin:18px 0;
    max-width:900px;
    word-break:break-word;
    overflow-wrap:anywhere;
}
.article-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px 20px;
    font-size:13px;
    color:rgba(255,255,255,.66);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:15px;height:15px;color:var(--gold);flex:none}

/* Cover */
.article-cover-wrap{
    position:relative;
    z-index:2;
    margin-top:-64px;
}
.article-cover{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-xl);
    padding:12px;
    box-shadow:var(--shadow-lg);
}
.article-cover img{
    width:100%;
    aspect-ratio:16/9;
    border-radius:var(--radius-lg);
}

/* Article layout */
.article-section{padding:44px 0 80px}
.article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr) 320px;
    gap:48px;
    align-items:start;
}
.article-main{min-width:0}
.article-body{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-xl);
    padding:42px;
    box-shadow:var(--shadow);
}
.article-content{
    max-width:760px;
    margin:0 auto;
    color:var(--text);
    font-size:16px;
    line-height:1.9;
}
.article-content > *:first-child{margin-top:0}
.article-content > *:last-child{margin-bottom:0}
.article-content p{margin:0 0 20px}
.article-content h2{
    font-size:28px;
    font-weight:700;
    line-height:1.4;
    margin:40px 0 16px;
    letter-spacing:-.2px;
}
.article-content h3{
    font-size:21px;
    font-weight:600;
    line-height:1.5;
    margin:30px 0 12px;
}
.article-content ul,
.article-content ol{
    margin:0 0 22px;
    padding-left:1.45em;
}
.article-content li{margin:8px 0}
.article-content a{
    color:var(--coral);
    text-decoration:underline;
    text-underline-offset:3px;
}
.article-content a:hover{color:var(--ink)}
.article-content img{
    width:100%;
    border-radius:var(--radius-md);
    margin:26px 0;
}
.article-content blockquote{
    margin:28px 0;
    padding:18px 22px;
    border-left:4px solid var(--coral);
    border-radius:0 var(--radius-md) var(--radius-md) 0;
    background:var(--paper);
    color:var(--text-soft);
}
.article-content table{
    width:100%;
    border-collapse:collapse;
    margin:26px 0;
    border:1px solid var(--line);
    font-size:14px;
}
.article-content th,
.article-content td{
    padding:12px 14px;
    border-bottom:1px solid var(--line);
    text-align:left;
    vertical-align:top;
}
.article-content th{
    background:var(--surface-soft);
    color:var(--ink);
    font-weight:700;
}
.article-content pre{
    overflow-x:auto;
    padding:18px;
    border-radius:var(--radius-md);
    background:var(--ink-deep);
    color:#fff;
}
.article-content code{
    padding:2px 6px;
    border-radius:6px;
    background:var(--surface-soft);
    font-size:.92em;
}
.article-content pre code{padding:0;background:transparent}

.article-tags{
    max-width:760px;
    margin:36px auto 0;
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    padding-top:28px;
    border-top:1px solid var(--line);
}
.tag{
    font-size:13px;
    padding:7px 12px;
    border-radius:999px;
    background:var(--surface-soft);
    color:var(--text-soft);
}
.tag:hover{color:var(--ink);background:#e7e0d7}
.article-share{
    max-width:760px;
    margin:24px auto 0;
    display:flex;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
}
.share-label{font-size:13px;color:var(--text-muted)}
.share-btn{
    width:40px;
    height:40px;
    border-radius:50%;
    border:1px solid var(--line);
    background:#fff;
    display:grid;
    place-items:center;
    color:var(--text-soft);
    padding:0;
}
.share-btn:hover{color:var(--ink);border-color:var(--ink);transform:translateY(-2px)}
.share-btn svg{width:17px;height:17px}

/* Empty state */
.empty-state{
    max-width:620px;
    margin:30px auto;
    text-align:center;
    background:var(--paper);
    border:1px dashed var(--line);
    border-radius:var(--radius-lg);
    padding:48px 24px;
}
.empty-icon{
    width:54px;
    height:54px;
    border-radius:16px;
    background:#fff;
    display:grid;
    place-items:center;
    margin:0 auto 16px;
    color:var(--text-muted);
}
.empty-icon svg{width:25px;height:25px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-soft);margin-bottom:18px}

/* Sidebar */
.article-sidebar{
    position:sticky;
    top:96px;
    display:flex;
    flex-direction:column;
    gap:20px;
}
.sidebar-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:22px;
    box-shadow:var(--shadow);
}
.sidebar-card h3{font-size:17px;margin-bottom:14px}
.toc{
    list-style:none;
    padding:0;
    margin:0;
    display:flex;
    flex-direction:column;
    gap:10px;
}
.toc a{
    font-size:14px;
    color:var(--text-soft);
    display:flex;
    gap:8px;
    align-items:center;
}
.toc a::before{
    content:"";
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--gold);
    flex:none;
}
.toc a:hover{color:var(--coral)}
.side-links{
    list-style:none;
    padding:0;
    margin:0;
    display:flex;
    flex-direction:column;
    gap:12px;
}
.side-links a{
    font-size:14px;
    color:var(--text-soft);
    display:block;
    padding-bottom:10px;
    border-bottom:1px solid var(--line-soft);
}
.side-links li:last-child a{border-bottom:0;padding-bottom:0}
.side-links a:hover{color:var(--coral)}
.sidebar-cta{
    position:relative;
    overflow:hidden;
    background:var(--ink);
    border-radius:var(--radius-lg);
    padding:24px;
    color:#fff;
}
.sidebar-cta::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1px);
    background-size:24px 24px;
    opacity:.08;
    pointer-events:none;
}
.sidebar-cta > *{position:relative;z-index:1}
.sidebar-cta h3{color:#fff;font-size:18px;margin-bottom:8px}
.sidebar-cta p{
    color:rgba(255,255,255,.7);
    font-size:14px;
    line-height:1.7;
    margin-bottom:16px;
}
.sidebar-cta .btn{width:100%}

/* Related */
.related-section{margin-top:56px}
.related-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:22px;
}
.info-card{
    display:flex;
    flex-direction:column;
    overflow:hidden;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow);
    transition:transform .45s cubic-bezier(.2,.7,.3,1),box-shadow .45s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.info-card-media{
    position:relative;
    aspect-ratio:16/9;
    overflow:hidden;
}
.info-card-media img{
    width:100%;
    height:100%;
    transition:transform .55s cubic-bezier(.2,.7,.3,1);
}
.info-card:hover .info-card-media img{transform:scale(1.03)}
.info-card-body{
    display:flex;
    flex-direction:column;
    gap:10px;
    flex:1;
    padding:20px;
}
.info-card .badge{
    align-self:flex-start;
    background:var(--surface-soft);
    color:var(--ink);
}
.info-card h3{font-size:19px;line-height:1.5}
.info-card p{
    color:var(--text-soft);
    font-size:14px;
    line-height:1.7;
    margin:0;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.card-meta{
    display:flex;
    gap:14px;
    margin-top:auto;
    padding-top:8px;
    color:var(--text-muted);
    font-size:12px;
}

/* CTA */
.cta-section{padding:0 0 80px}
.wide-cta{
    position:relative;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    background:var(--ink-deep);
    border-radius:var(--radius-xl);
    padding:44px;
    color:#fff;
    box-shadow:var(--shadow-lg);
}
.wide-cta::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.42) 1px,transparent 1px);
    background-size:28px 28px;
    opacity:.08;
    pointer-events:none;
}
.wide-cta > *{position:relative;z-index:1}
.wide-cta h2{font-size:30px;color:#fff;margin-bottom:8px}
.wide-cta p{color:rgba(255,255,255,.7);margin:0;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}

/* Footer */
.site-footer{
    position:relative;
    overflow:hidden;
    background:var(--ink-deep);
    color:rgba(255,255,255,.66);
    padding:64px 0 28px;
}
.site-footer::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
    background-size:30px 30px;
    opacity:.05;
    pointer-events:none;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-name{color:#fff;font-size:18px}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.footer-desc{
    max-width:320px;
    margin-top:16px;
    color:rgba(255,255,255,.6);
    font-size:14px;
    line-height:1.8;
}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{
    list-style:none;
    padding:0;
    margin:0;
    display:flex;
    flex-direction:column;
    gap:11px;
}
.footer-col a,.footer-contact li{
    color:rgba(255,255,255,.62);
    font-size:14px;
}
.footer-col a:hover{color:var(--gold)}
.footer-contact li{line-height:1.7}
.footer-contact strong{color:rgba(255,255,255,.82);font-weight:600}
.footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    padding-top:24px;
    color:rgba(255,255,255,.44);
    font-size:13px;
}
.back-top{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:rgba(255,255,255,.62);
}
.back-top svg{width:16px;height:16px}
.back-top:hover{color:var(--gold)}

/* Mobile tab */
.mobile-tab{display:none}

@media (max-width:1199px){
    .main-nav{gap:16px}
    .main-nav > a{font-size:13px}
}
@media (max-width:991px){
    body{padding-bottom:calc(74px + env(safe-area-inset-bottom))}
    .main-nav{
        position:fixed;
        top:0;
        right:0;
        bottom:0;
        z-index:1001;
        width:84%;
        max-width:360px;
        display:flex;
        flex-direction:column;
        align-items:stretch;
        justify-content:flex-start;
        gap:0;
        padding:96px 24px 32px;
        background:#fff;
        box-shadow:-20px 0 40px rgba(18,10,38,.2);
        transform:translateX(100%);
        transition:transform .32s cubic-bezier(.2,.7,.3,1);
        overflow-y:auto;
    }
    body.nav-open .main-nav{transform:translateX(0)}
    .main-nav > a{
        font-size:16px;
        color:var(--text);
        padding:15px 0;
        border-bottom:1px solid var(--line);
    }
    .main-nav > a::after{display:none}
    .main-nav > a:hover,
    .main-nav > a.is-active{color:var(--coral)}
    .main-nav .mobile-nav-cta{
        display:inline-flex;
        width:100%;
        margin-top:24px;
        border-bottom:0;
        color:#fff;
        padding:0 18px;
    }
    .nav-toggle{display:inline-flex}
    .header-actions .btn-primary{display:none}
    .header-actions{gap:0}
    .article-layout{grid-template-columns:1fr}
    .article-sidebar{position:static}
    .article-hero h1{font-size:36px}
    .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .wide-cta{flex-direction:column;align-items:flex-start}
    .cta-actions{width:100%}
    .mobile-tab{
        position:fixed;
        left:0;
        right:0;
        bottom:0;
        z-index:1000;
        display:grid;
        grid-template-columns:repeat(5,1fr);
        background:rgba(255,255,255,.98);
        border-top:1px solid var(--line);
        box-shadow:0 -8px 24px rgba(27,16,53,.08);
        padding-bottom:env(safe-area-inset-bottom);
    }
    .mobile-tab a{
        position:relative;
        display:flex;
        flex-direction:column;
        align-items:center;
        justify-content:center;
        gap:3px;
        height:64px;
        font-size:11px;
        font-weight:600;
        color:var(--text-muted);
    }
    .mobile-tab a::before{
        content:"";
        position:absolute;
        top:0;
        left:50%;
        width:28px;
        height:3px;
        border-radius:0 0 3px 3px;
        background:var(--ink);
        transform:translateX(-50%) scaleX(0);
        transition:transform .25s ease;
    }
    .mobile-tab a.is-active{color:var(--ink)}
    .mobile-tab a.is-active::before{transform:translateX(-50%) scaleX(1)}
    .mobile-tab svg{width:22px;height:22px}
}
@media (max-width:767px){
    .container{padding-left:20px;padding-right:20px}
    .section{padding:64px 0}
    .article-hero{padding:40px 0 88px}
    .article-hero h1{font-size:32px;letter-spacing:-.3px}
    .article-cover-wrap{margin-top:-40px}
    .article-section{padding:32px 0 60px}
    .article-body{padding:28px}
    .section-head h2{font-size:26px}
    .related-grid{grid-template-columns:1fr;gap:18px}
    .wide-cta{padding:32px;border-radius:20px}
    .wide-cta h2{font-size:26px}
    .cta-section{padding-bottom:64px}
    .footer-grid{gap:28px}
    .footer-bottom{align-items:flex-start;flex-direction:column}
}
@media (max-width:575px){
    .container{padding-left:18px;padding-right:18px}
    .brand-name{font-size:16px}
    .brand-sub{font-size:10px}
    .article-hero{padding:32px 0 76px}
    .article-hero h1{font-size:30px}
    .article-meta{gap:8px 14px;font-size:12px}
    .article-cover{padding:8px;border-radius:20px}
    .article-cover img{border-radius:14px}
    .article-body{padding:22px;border-radius:20px}
    .article-content{font-size:15px}
    .article-content h2{font-size:23px;margin-top:32px}
    .article-content h3{font-size:19px}
    .article-content table{display:block;overflow-x:auto;white-space:nowrap}
    .section-head{align-items:flex-start;flex-direction:column;gap:8px}
    .section-head h2{font-size:24px}
    .wide-cta{padding:28px 22px}
    .wide-cta h2{font-size:23px}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr}
    .footer-desc{max-width:none}
    .article-sidebar{gap:16px}
    .sidebar-card,.sidebar-cta{padding:20px}
    .empty-state{padding:36px 18px}
}
@media (prefers-reduced-motion:reduce){
    *{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* roulang page: category2 */
:root{
  --ink:#1B1035;
  --ink-deep:#120A26;
  --accent:#FF5C39;
  --star:#FFC24B;
  --paper:#F6F3EE;
  --card:#FFFFFF;
  --soft:#EFEAE2;
  --text:#1A1420;
  --text-2:#5B5566;
  --text-3:#8A8394;
  --line:#E6E0D8;
  --line-soft:#ECE6DD;
  --radius:20px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow:0 8px 24px rgba(27,16,53,.08);
  --shadow-lg:0 16px 36px rgba(27,16,53,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  padding-top:var(--header-h);
  padding-bottom:calc(72px + env(safe-area-inset-bottom));
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--ink);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:1040;
  background:rgba(246,243,238,.96);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:var(--radius-xs);
  background:var(--ink);color:var(--star);
  display:grid;place-items:center;box-shadow:0 6px 16px rgba(27,16,53,.22);
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{display:block;font-size:18px;font-weight:800;line-height:1.15;letter-spacing:.4px;color:var(--ink);}
.brand-sub{display:block;font-size:11px;letter-spacing:2.5px;color:var(--text-3);line-height:1.4;}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.btn svg{width:16px;height:16px;}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(27,16,53,.18);}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,92,57,.28);}
.btn-accent:hover{background:#F04A28;color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,92,57,.32);}
.btn-accent:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:rgba(27,16,53,.06);color:var(--ink);transform:translateY(-2px);}
.btn-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-xs);
  align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,10,38,.55);z-index:1050;opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;z-index:1060;
  background:var(--paper);padding:22px 22px calc(28px + env(safe-area-inset-bottom));
  transform:translateX(100%);transition:transform .38s var(--ease);
  overflow-y:auto;display:flex;flex-direction:column;gap:18px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:38px;height:38px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:18px;color:var(--ink);line-height:1;display:grid;place-items:center;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{padding:14px 4px;font-size:15.5px;color:var(--text-2);border-bottom:1px solid var(--line-soft);}
.drawer-nav a.is-active{color:var(--ink);font-weight:700;position:relative;padding-left:16px;}
.drawer-nav a.is-active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:18px;border-radius:4px;background:var(--accent);}
.drawer-note{font-size:13px;color:var(--text-3);line-height:1.8;}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--ink-deep) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:52px 0 68px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 80% 16%,rgba(255,194,75,.16),transparent 46%),
    radial-gradient(circle at 10% 86%,rgba(255,92,57,.15),transparent 44%),
    linear-gradient(180deg,rgba(18,10,38,.72),rgba(18,10,38,.86));
}
.page-hero .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:26px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--star);}
.crumb .sep{opacity:.5;}
.crumb .cur{color:#fff;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(255,194,75,.45);background:rgba(255,194,75,.12);
  font-size:13px;color:var(--star);margin-bottom:20px;
}
.hero-title{font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;color:#fff;}
.hero-title em{font-style:normal;color:var(--star);}
.hero-sub{margin-top:18px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.8);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.hero-tags span{
  font-size:13px;color:rgba(255,255,255,.78);padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.16);box-shadow:0 24px 50px rgba(0,0,0,.35);
}
.hero-float{
  position:absolute;left:-14px;bottom:-18px;background:#fff;color:var(--text);
  border-radius:var(--radius-sm);padding:12px 18px;box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:12px;
}
.hero-float .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,92,57,.16);}
.hero-float strong{font-size:15px;color:var(--ink);}
.hero-float small{display:block;font-size:12px;color:var(--text-3);line-height:1.5;}

/* 通用板块 */
.section{padding:76px 0;}
.section.soft{background:var(--soft);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-head h2{font-size:30px;font-weight:700;line-height:1.35;color:var(--ink);letter-spacing:-.3px;}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--ink);}
.link-more svg{width:15px;height:15px;transition:transform .3s var(--ease);}
.link-more:hover svg{transform:translateX(4px);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1.6px;color:var(--accent);margin-bottom:12px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}

/* 说明区 */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;}
.intro-text p{font-size:16px;line-height:1.9;color:var(--text-2);margin-bottom:20px;}
.intro-text p:last-child{margin-bottom:0;}
.points-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);
}
.points-card h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:20px;}
.point-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-soft);}
.point-item:last-child{border-bottom:0;padding-bottom:0;}
.point-item .pnum{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,92,57,.1);color:var(--accent);font-weight:800;font-size:14px;
}
.point-item h4{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:4px;}
.point-item p{font-size:14px;line-height:1.8;color:var(--text-3);}

/* 数据卡 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow);transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.stat-num{font-size:34px;font-weight:800;color:var(--ink);line-height:1.2;letter-spacing:-1px;}
.stat-num span{font-size:16px;font-weight:700;margin-left:4px;color:var(--accent);}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-2);}
.stat-note{margin-top:6px;font-size:12.5px;color:var(--text-3);line-height:1.7;}

/* 筛选条 */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x proximity;
  padding:4px 2px 10px;margin-bottom:28px;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;scroll-snap-align:start;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  font-size:14px;font-weight:500;display:inline-flex;align-items:center;
  transition:all .3s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px);}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:700;}

/* 项目卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.item-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s var(--ease);
}
.item-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#DCD4C9;}
.item-media{position:relative;overflow:hidden;}
.item-media img{width:100%;height:236px;object-fit:cover;transition:transform .6s var(--ease);}
.item-card:hover .item-media img{transform:scale(1.03);}
.item-tag{
  position:absolute;left:16px;top:16px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(18,10,38,.78);color:#fff;font-size:12.5px;font-weight:600;
  display:inline-flex;align-items:center;letter-spacing:.5px;
}
.item-time{
  position:absolute;right:16px;bottom:16px;height:28px;padding:0 12px;border-radius:8px;
  background:rgba(255,255,255,.94);color:var(--ink);font-size:12.5px;font-weight:700;
  display:inline-flex;align-items:center;
}
.item-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.item-body h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.5;}
.item-body p{font-size:14.5px;line-height:1.85;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.item-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.item-meta .go{display:inline-flex;align-items:center;gap:5px;font-weight:600;color:var(--ink);}
.item-meta .go svg{width:14px;height:14px;transition:transform .3s var(--ease);}
.item-card:hover .item-meta .go svg{transform:translateX(4px);}

/* 步骤 */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px 24px;box-shadow:var(--shadow);transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;
  background:var(--ink);color:var(--star);font-weight:800;font-size:15px;margin-bottom:16px;
}
.step-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.step-card p{font-size:14.5px;line-height:1.85;color:var(--text-2);}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:920px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.faq-item[open]{border-color:#DCD4C9;box-shadow:var(--shadow-lg);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 24px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;
  background:var(--accent);transform:scaleY(0);transform-origin:center;transition:transform .3s var(--ease);
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-icon{
  position:absolute;right:22px;top:50%;width:12px;height:12px;margin-top:-6px;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(-135deg);border-color:var(--accent);}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--text-2);}
.faq-body p{margin:0;}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-deep);color:#fff;padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 18% 24%,rgba(255,194,75,.14),transparent 40%),
    radial-gradient(circle at 84% 74%,rgba(255,92,57,.16),transparent 42%);
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-inner h2{font-size:28px;font-weight:800;line-height:1.35;color:#fff;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.75);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 返回 */
.back-home{display:flex;justify-content:center;padding:44px 0 8px;}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:360px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col ul a:hover{color:var(--star);}
.footer-contact li{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.back-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:13px;}
.back-top svg{width:15px;height:15px;}
.back-top:hover{color:var(--star);}

/* 移动底部 Tab */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;display:none;
  background:#fff;border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 18px rgba(27,16,53,.06);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);gap:2px;}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 2px;font-size:11px;color:var(--text-3);line-height:1.3;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.tab-item.is-active{color:var(--ink);font-weight:700;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--accent);
}

/* 响应式 */
@media (max-width:1199px){
  .main-nav{gap:18px;}
  .main-nav a{font-size:14px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .mobile-tabbar{display:block;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-title{font-size:36px;}
  .hero-float{left:auto;right:12px;bottom:-16px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .step-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:60px 0;}
  .page-hero{padding:40px 0 56px;}
}
@media (max-width:767px){
  .card-grid{grid-template-columns:1fr;}
  .item-media img{height:210px;}
  .section-head h2{font-size:24px;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}
@media (max-width:575px){
  .container{padding:0 18px;}
  .hero-title{font-size:30px;letter-spacing:-.3px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-tags span{font-size:12px;padding:5px 12px;}
  .brand-name{font-size:16px;}
  .brand-sub{letter-spacing:1.6px;}
  .stat-grid{grid-template-columns:1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-item summary{font-size:15px;padding:18px 48px 18px 20px;}
  .faq-body{padding:0 20px 20px;font-size:14.5px;}
  .points-card{padding:22px;}
  .item-body{padding:20px;}
  .section{padding:52px 0;}
  .hero-float{padding:10px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --ink:#1B1035;
  --ink-deep:#120A26;
  --coral:#FF5C39;
  --star:#FFC24B;
  --paper:#F6F3EE;
  --card:#FFFFFF;
  --soft:#EFEAE2;
  --text:#1A1420;
  --text-2:#5B5566;
  --text-3:#8A8394;
  --line:#E6E0D8;
  --line-soft:#ECE6DD;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 8px 24px rgba(27,16,53,.08);
  --shadow-hover:0 16px 36px rgba(27,16,53,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease)}
a:hover{color:var(--ink)}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
svg{display:block}
:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.btn:active{transform:translateY(0) scale(.99)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,16,53,.24)}
.btn-accent{background:var(--coral);color:#fff}
.btn-accent:hover{background:#ef4a28;color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,92,57,.32)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(27,16,53,.06);color:var(--ink);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.link-more svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}
.link-more:hover{color:var(--coral)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--header-h);
  z-index:1050;
  background:rgba(246,243,238,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(2px);
}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--ink);
  color:var(--star);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.2px;color:var(--ink)}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:1.5px}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--ink);font-weight:700}
.main-nav a.is-active::after{transform:scaleX(1);background:var(--coral)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  align-items:center;justify-content:center;
  position:relative;
  cursor:pointer;
  padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .28s var(--ease),background-color .28s var(--ease),top .28s var(--ease);
}
.nav-toggle span{position:relative}
.nav-toggle span::before{position:absolute;top:-6px;left:0}
.nav-toggle span::after{position:absolute;top:6px;left:0}
.nav-toggle.is-active span{background:transparent}
.nav-toggle.is-active span::before{transform:rotate(45deg);top:0}
.nav-toggle.is-active span::after{transform:rotate(-45deg);top:0}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb-bar a{color:rgba(255,255,255,.72)}
.breadcrumb-bar a:hover{color:var(--star)}
.breadcrumb-bar .sep{opacity:.5}
.breadcrumb-bar .current{color:#fff;font-weight:600}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-deep);
  color:#fff;
  padding:56px 0 72px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(100deg,rgba(18,10,38,.94) 0%,rgba(18,10,38,.8) 46%,rgba(27,16,53,.66) 100%),url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.55) 1px,transparent 1.4px),
    radial-gradient(circle,rgba(255,194,75,.5) 1px,transparent 1.4px);
  background-size:130px 130px,190px 190px;
  background-position:0 0,70px 60px;
  opacity:.14;
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:1px;
  color:var(--star);
  background:rgba(255,194,75,.12);
  border:1px solid rgba(255,194,75,.32);
  margin-bottom:20px;
}
.page-hero h1{
  font-size:44px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.5px;
  margin-bottom:18px;
}
.hero-sub{
  font-size:16px;
  line-height:1.9;
  color:rgba(255,255,255,.78);
  max-width:560px;
  margin-bottom:26px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero-badges span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
}
.hero-badges span::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--coral);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 24px 60px rgba(0,0,0,.42);
}
.hero-figure img{
  width:100%;
  height:100%;
  aspect-ratio:5/4;
  object-fit:cover;
}
.hero-tag{
  position:absolute;
  left:16px;bottom:16px;
  padding:7px 14px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--ink);
  background:var(--star);
  letter-spacing:.5px;
}
.hero-score{
  position:absolute;
  right:16px;top:16px;
  background:rgba(18,10,38,.82);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-md);
  padding:10px 14px;
  text-align:center;
}
.hero-score strong{
  display:block;
  font-size:20px;
  font-weight:800;
  color:var(--star);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-score small{font-size:11px;color:rgba(255,255,255,.7);letter-spacing:.5px}

/* ---------- 指标卡 ---------- */
.stat-strip{margin-top:-40px;position:relative;z-index:5}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.stat-card{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  padding:22px 20px;
  box-shadow:var(--shadow);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.stat-num{
  display:block;
  font-size:30px;
  font-weight:800;
  line-height:1.2;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.5px;
}
.stat-label{display:block;margin-top:6px;font-size:13px;color:var(--text-2)}

/* ---------- 板块通用 ---------- */
.section{padding:80px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:38px;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.4px;
  color:var(--ink);
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}
.section-label{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--coral);
  margin-bottom:10px;
}

/* ---------- 主内容 + 粘性侧卡 ---------- */
.split-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;
  align-items:start;
}
.prose p{font-size:16px;line-height:1.9;color:var(--text-2);margin-bottom:20px}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--ink);font-weight:700}

.point-list{display:grid;gap:14px;margin-top:28px}
.point-item{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:18px 20px;
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.point-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.point-item .dot{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:9px;
  background:rgba(255,92,57,.1);
  color:var(--coral);
  font-size:13px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.point-item h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.point-item p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0}

/* ---------- 交替图文行 ---------- */
.feature-rows{margin-top:44px;display:grid;gap:0}
.feature-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
  padding:34px 0;
  border-top:1px solid var(--line);
}
.feature-row:first-child{border-top:0;padding-top:0}
.feature-row .feature-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow);
}
.feature-row .feature-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.feature-row:hover .feature-media img{transform:scale(1.03)}
.feature-row .feature-body h3{
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:12px;
}
.feature-row .feature-body p{
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:14px;
}
.feature-row .feature-body p:last-child{margin-bottom:0}
.feature-row.is-reverse .feature-media{order:2}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--ink);
  background:var(--soft);
  border:1px solid var(--line);
}
.tag-accent{background:rgba(255,92,57,.1);border-color:rgba(255,92,57,.24);color:#c93c1e}
.tag-star{background:rgba(255,194,75,.16);border-color:rgba(255,194,75,.4);color:#8a5b00}

/* ---------- 侧栏粘性卡 ---------- */
.side-stack{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--shadow);
}
.side-card h3{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:16px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.side-card ul{display:grid;gap:12px}
.side-card li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
}
.side-card li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--star);
}
.side-card.is-dark{
  background:var(--ink-deep);
  border-color:rgba(255,255,255,.1);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.side-card.is-dark::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.5) 1px,transparent 1.3px);
  background-size:110px 110px;
  opacity:.12;
  pointer-events:none;
}
.side-card.is-dark h3{color:#fff;border-bottom-color:rgba(255,255,255,.14);position:relative;z-index:2}
.side-card.is-dark p{position:relative;z-index:2;font-size:14px;line-height:1.8;color:rgba(255,255,255,.75);margin-bottom:16px}
.side-card.is-dark .btn{position:relative;z-index:2;width:100%}

/* ---------- 对照表 ---------- */
.table-wrap{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table thead th{
  background:var(--soft);
  color:var(--ink);
  font-weight:700;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.spec-table tbody td{
  padding:16px 20px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
  vertical-align:top;
  line-height:1.7;
}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover td{background:rgba(246,243,238,.7)}
.spec-table td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:box-shadow .4s var(--ease);
}
.faq-item[open]{box-shadow:var(--shadow-hover)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px 20px 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:4px;
  border-radius:0 4px 4px 0;
  background:var(--coral);
  opacity:0;
  transition:opacity .3s var(--ease);
}
.faq-item[open] summary::before{opacity:1}
.faq-item summary .chev{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--soft);
  display:flex;align-items:center;justify-content:center;
  transition:transform .35s var(--ease),background-color .3s var(--ease);
}
.faq-item summary .chev svg{width:14px;height:14px;color:var(--ink)}
.faq-item[open] summary .chev{transform:rotate(180deg);background:rgba(255,92,57,.14)}
.faq-body{
  padding:0 24px 22px 26px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:var(--ink-deep);
  color:#fff;
  border-radius:24px;
  padding:48px 52px;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.55) 1px,transparent 1.3px),
    radial-gradient(circle,rgba(255,194,75,.5) 1px,transparent 1.3px);
  background-size:120px 120px,180px 180px;
  background-position:0 0,60px 60px;
  opacity:.15;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{
  font-size:26px;
  font-weight:800;
  line-height:1.4;
  letter-spacing:-.3px;
  margin-bottom:10px;
}
.cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.74);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ---------- 返回首页条 ---------- */
.back-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 28px;
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  flex-wrap:wrap;
}
.back-bar p{font-size:15px;color:var(--text-2);margin:0}
.back-bar strong{color:var(--ink)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  margin-top:80px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand-text{margin-bottom:16px}
.footer-brand .brand-name{color:#fff;font-size:18px}
.footer-brand .brand-sub{color:rgba(255,255,255,.46)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:340px}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a:hover{color:var(--star)}
.footer-contact li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.66)}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.back-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:rgba(255,255,255,.7);
}
.back-top svg{width:15px;height:15px}
.back-top:hover{color:var(--star)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{display:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:38px}
  .split-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px}
}
@media (max-width:991px){
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:84%;
    max-width:340px;
    height:100vh;
    background:var(--card);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:2px;
    padding:96px 24px 32px;
    transform:translateX(100%);
    transition:transform .35s var(--ease);
    box-shadow:-16px 0 44px rgba(18,10,38,.2);
    z-index:1040;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav a{
    padding:14px 6px;
    font-size:16px;
    border-bottom:1px solid var(--line-soft);
  }
  .main-nav a::after{display:none}
  .main-nav a.is-active{color:var(--coral)}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .page-hero{padding:44px 0 60px}
  .page-hero-inner{grid-template-columns:1fr;gap:34px}
  .page-hero h1{font-size:34px}
  .hero-figure img{aspect-ratio:16/10}
  .split-layout{grid-template-columns:1fr;gap:32px}
  .side-stack{position:static;grid-template-columns:1fr;order:2}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 34px}
}
@media (max-width:767px){
  body{padding-bottom:calc(78px + env(safe-area-inset-bottom))}
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 52px}
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{flex:1 1 auto}
  .stat-strip{margin-top:-28px}
  .stat-grid{gap:12px}
  .stat-card{padding:18px 16px;border-radius:var(--r-md)}
  .stat-num{font-size:24px}
  .section-head h2{font-size:24px}
  .feature-row{grid-template-columns:1fr;gap:18px;padding:26px 0}
  .feature-row.is-reverse .feature-media{order:0}
  .spec-table thead th,
  .spec-table tbody td{padding:12px 14px;font-size:13px}
  .table-wrap{overflow-x:auto}
  .spec-table{min-width:560px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .cta-band{padding:32px 24px;border-radius:20px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .back-bar{padding:20px 18px}
  .site-footer{padding-top:48px;margin-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .mobile-tabbar{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    position:fixed;
    left:0;right:0;bottom:0;
    background:#fff;
    border-top:1px solid var(--line);
    padding:6px 0 calc(6px + env(safe-area-inset-bottom));
    z-index:1030;
    box-shadow:0 -6px 20px rgba(27,16,53,.06);
  }
  .mobile-tabbar a{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:3px;
    font-size:11px;
    color:var(--text-3);
    padding:5px 2px;
    position:relative;
    line-height:1.4;
  }
  .mobile-tabbar a svg{width:22px;height:22px}
  .mobile-tabbar a.is-active{color:var(--ink);font-weight:700}
  .mobile-tabbar a.is-active::before{
    content:"";
    position:absolute;
    top:-6px;left:50%;
    transform:translateX(-50%);
    width:22px;height:3px;
    border-radius:0 0 3px 3px;
    background:var(--coral);
  }
}
@media (max-width:520px){
  .page-hero h1{font-size:27px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr}
  .hero-badges span{font-size:12px;padding:5px 11px}
}

/* roulang page: category4 */
:root{
  --ink:#1B1035;
  --ink-deep:#120A26;
  --coral:#FF5C39;
  --star:#FFC24B;
  --paper:#F6F3EE;
  --card:#FFFFFF;
  --tint:#EFEAE2;
  --text:#1A1420;
  --text-2:#5B5566;
  --text-3:#8A8394;
  --line:#E6E0D8;
  --radius:20px;
  --radius-sm:14px;
  --shadow:0 8px 24px rgba(27,16,53,.08);
  --shadow-hover:0 16px 36px rgba(27,16,53,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  padding-top:var(--header-h);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease);}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(255,92,57,.35);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.nums{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 6px 16px rgba(27,16,53,.18);}
.btn-primary:hover{background:var(--ink-deep);transform:translateY(-2px);box-shadow:var(--shadow-hover);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(255,92,57,.28);}
.btn-coral:hover{background:#ef4a26;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,92,57,.34);}
.btn-ghost{background:transparent;border-color:rgba(27,16,53,.28);color:var(--ink);}
.btn-ghost:hover{background:rgba(27,16,53,.06);border-color:var(--ink);}
.btn-light-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-light-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
.btn-block{width:100%;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:var(--header-h);
  background:rgba(246,243,238,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(27,16,53,.05);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--ink) 0%,#2B1A55 100%);
  color:var(--star);flex:none;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.4px;}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:2px;}
.main-nav{display:flex;align-items:center;gap:26px;flex:1;justify-content:center;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:700;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;position:relative;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .3s var(--ease);
}
.nav-toggle span::before{transform:translateY(-6px);}
.nav-toggle span::after{transform:translateY(4px);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,10,38,.55);z-index:1040;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;z-index:1050;
  background:var(--paper);padding:22px 22px 32px;
  transform:translateX(100%);transition:transform .35s var(--ease);
  overflow-y:auto;box-shadow:-12px 0 40px rgba(18,10,38,.22);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;cursor:pointer;color:var(--text-2);
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--text-2);
  background:#fff;border:1px solid var(--line);
}
.drawer-nav a.is-active{color:#fff;background:var(--ink);border-color:var(--ink);}
.drawer-note{margin-top:18px;font-size:13px;color:var(--text-3);}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:22px;}
.breadcrumb-nav a{color:rgba(255,255,255,.86);}
.breadcrumb-nav a:hover{color:var(--star);}
.breadcrumb-nav span.sep{opacity:.5;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:44px 0 62px;
  background:
    radial-gradient(900px 380px at 84% -14%,rgba(255,92,57,.30),transparent 62%),
    linear-gradient(112deg,rgba(18,10,38,.95) 0%,rgba(27,16,53,.88) 52%,rgba(27,16,53,.66) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:66px 66px;opacity:.07;
}
.cat-hero .container{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:2px;color:var(--star);
  padding:6px 14px;border:1px solid rgba(255,194,75,.42);border-radius:8px;
  background:rgba(255,194,75,.10);margin-bottom:20px;
}
.cat-hero h1{
  font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;
  max-width:780px;margin-bottom:18px;
}
.cat-hero h1 em{font-style:normal;color:var(--star);}
.hero-lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.84);max-width:700px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;}
.hero-stats li{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:14px;padding:12px 20px;font-size:13px;color:rgba(255,255,255,.78);
}
.hero-stats strong{display:block;font-size:20px;font-weight:800;color:#fff;line-height:1.4;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tint{background:var(--tint);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow-dark{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:2px;
  color:var(--coral);background:rgba(255,92,57,.10);
  padding:5px 12px;border-radius:8px;margin-bottom:14px;
}
.section-head h2{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.3px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--text-2);}

/* ---------- 简介 + 要点 ---------- */
.intro-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:start;}
.intro-text p{color:var(--text-2);margin-bottom:20px;}
.intro-text p:last-child{margin-bottom:0;}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;box-shadow:var(--shadow);
}
.aside-card h3{font-size:19px;font-weight:700;margin-bottom:18px;}
.point-list li{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line);}
.point-list li:first-child{border-top:0;padding-top:0;}
.point-num{
  flex:none;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,194,75,.20);border:1px solid rgba(255,194,75,.55);
  color:#7A5200;font-size:13px;font-weight:800;
}
.point-list h4{font-size:15px;font-weight:700;margin-bottom:4px;}
.point-list p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- 标签筛选条 ---------- */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 14px;margin-bottom:28px;
  scroll-snap-type:x proximity;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.chip{
  flex:none;scroll-snap-align:start;
  display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--text-2);
  transition:all .28s var(--ease);cursor:pointer;
}
.chip:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff;box-shadow:0 6px 16px rgba(27,16,53,.18);}

/* ---------- 卡片网格 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.tile{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s var(--ease);
  display:flex;flex-direction:column;
}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DCD3C7;}
.tile-img{aspect-ratio:16/10;overflow:hidden;background:var(--tint);}
.tile-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.tile:hover .tile-img img{transform:scale(1.03);}
.tile-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--ink);background:rgba(27,16,53,.07);
  align-self:flex-start;
}
.tile h3{font-size:19px;font-weight:600;line-height:1.5;}
.tile p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.tile-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-top:auto;padding-top:6px;}
.dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}

/* ---------- 步骤区 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow);position:relative;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-num{
  font-size:32px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px var(--star);letter-spacing:1px;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px 20px 28px;font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  border-radius:0 4px 4px 0;background:var(--coral);opacity:0;transition:opacity .3s var(--ease);
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary::after{
  content:"";flex:none;width:9px;height:9px;margin-right:6px;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform .3s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--ink);}
.faq-body{padding:0 24px 22px 28px;font-size:15.5px;color:var(--text-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background:var(--ink-deep);border-radius:24px;
  padding:48px 52px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:0 20px 48px rgba(18,10,38,.24);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:58px 58px;opacity:.08;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:28px;font-weight:800;line-height:1.35;margin-bottom:10px;letter-spacing:-.3px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.78);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.76);padding:72px 0 26px;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:800;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:var(--star);}
.footer-contact li{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.7);}
.footer-contact strong{color:rgba(255,255,255,.92);font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.55);
}
.back-top{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.8);font-size:13px;}
.back-top svg{width:16px;height:16px;}
.back-top:hover{color:var(--star);}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1020;display:none;
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px rgba(27,16,53,.07);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:9px 2px 10px;font-size:11px;line-height:1.3;color:var(--text-3);
  transition:color .25s var(--ease);
}
.tab-item svg{width:22px;height:22px;}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--ink);
  transition:transform .3s var(--ease);
}
.tab-item.is-active{color:var(--ink);font-weight:700;}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav{gap:18px;}
  .main-nav a{font-size:14px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .cat-hero{padding:34px 0 50px;}
  .cat-hero h1{font-size:34px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:26px;}
  .intro-grid{grid-template-columns:1fr;gap:30px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .tabbar{display:block;}
  body{padding-bottom:76px;}
}
@media (max-width:575px){
  .container{padding:0 18px;}
  .cat-hero h1{font-size:30px;letter-spacing:-.3px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .hero-stats li{flex:1 1 100%;}
  .grid-2{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .aside-card{padding:24px 20px;}
  .tile-body{padding:20px 20px 22px;}
  .faq-item summary{padding:18px 18px 18px 22px;font-size:15.5px;}
  .faq-body{padding:0 18px 20px 22px;font-size:15px;}
  .cta-band{padding:32px 22px;border-radius:20px;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category5 */
:root{
  --ink:#1B1035;
  --ink-deep:#120A26;
  --coral:#FF5C39;
  --star:#FFC24B;
  --sand:#F6F3EE;
  --soft:#EFEAE2;
  --card:#FFFFFF;
  --text:#1A1420;
  --muted:#5B5566;
  --weak:#8A8394;
  --line:#E6E0D8;
  --line-soft:#ECE6DD;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(27,16,53,.08);
  --sh-2:0 16px 36px rgba(27,16,53,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-top:72px;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--coral)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 var(--gutter);width:100%}
.section{padding:var(--sec) 0}
.section-soft{background:var(--soft)}
.section-dark{background:var(--ink-deep);color:#F3EFF8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--coral);text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--coral);border-radius:2px}
h2{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.3px}
h3{font-size:19px;font-weight:600;line-height:1.5}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head p{color:var(--muted);font-size:15px;max-width:560px;margin-top:10px}
.link-more{font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;border-bottom:2px solid transparent;padding-bottom:2px}
.link-more:hover{border-color:var(--coral);color:var(--coral)}
.link-more svg{width:16px;height:16px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(246,243,238,.94);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--ink);color:var(--star);
  box-shadow:0 6px 16px rgba(27,16,53,.22);
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--ink)}
.brand-sub{font-size:11px;color:var(--weak);letter-spacing:.16em}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--muted);
  padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--ink);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .3s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--ink);font-weight:700}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  white-space:nowrap;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,92,57,.35)}
.btn-primary{background:var(--ink);color:#F8F4EE}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-accent{background:var(--coral);color:#fff}
.btn-accent:hover{background:#F0492A;color:#fff;transform:translateY(-2px);box-shadow:0 16px 36px rgba(255,92,57,.32)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(27,16,53,.06);color:var(--ink);transform:translateY(-2px)}
.btn-onDark{background:transparent;border-color:rgba(255,255,255,.5);color:#F3EFF8}
.btn-onDark:hover{border-color:var(--star);color:var(--star);background:rgba(255,255,255,.06)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);transition:.3s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}

/* ---------- breadcrumb + hero ---------- */
.breadcrumb-bar{padding:22px 0 0;background:var(--sand)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak)}
.breadcrumb a{color:var(--weak)}
.breadcrumb a:hover{color:var(--coral)}
.breadcrumb span.sep{color:#C9C2D2}
.breadcrumb .current{color:var(--muted);font-weight:600}

.page-hero{
  position:relative;overflow:hidden;color:#F5F1F9;
  background-image:linear-gradient(100deg,rgba(18,10,38,.94) 0%,rgba(27,16,53,.86) 46%,rgba(27,16,53,.58) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:64px 0 72px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(2px 2px at 18% 22%,rgba(255,194,75,.8),transparent 60%),
                   radial-gradient(1.6px 1.6px at 72% 34%,rgba(255,255,255,.7),transparent 60%),
                   radial-gradient(1.8px 1.8px at 46% 76%,rgba(255,194,75,.6),transparent 60%),
                   radial-gradient(1.4px 1.4px at 88% 82%,rgba(255,255,255,.55),transparent 60%);
  opacity:.5;
}
.page-hero-inner{position:relative;z-index:2;max-width:820px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,194,75,.14);border:1px solid rgba(255,194,75,.42);
  color:var(--star);font-size:13px;font-weight:600;margin-bottom:20px;
}
.page-hero h1{
  font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;
  color:#fff;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--star)}
.page-hero-sub{font-size:16.5px;line-height:1.85;color:rgba(245,241,249,.82);max-width:640px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);
  font-size:13px;color:rgba(245,241,249,.9);
}
.hero-badge svg{width:15px;height:15px;color:var(--coral)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- intro cards ---------- */
.lead-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:44px;align-items:start}
.lead-copy p{color:var(--muted);margin-bottom:20px}
.lead-copy p:last-child{margin-bottom:0}
.lead-copy strong{color:var(--ink);font-weight:700}
.point-stack{display:grid;gap:14px}
.point-card{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:22px 24px;box-shadow:var(--sh-1);display:flex;gap:16px;align-items:flex-start;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.point-no{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,194,75,.18);border:1px solid rgba(255,194,75,.55);
  color:#A9761A;font-weight:800;font-size:14px;
}
.point-card h3{font-size:16px;margin-bottom:4px}
.point-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0}

/* ---------- alternated rows ---------- */
.alt-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:44px;align-items:start}
.alt-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center;
  padding:32px 0;border-bottom:1px solid var(--line);
}
.alt-row:first-child{padding-top:0}
.alt-row:last-child{border-bottom:none;padding-bottom:0}
.alt-row:nth-child(even) .alt-media{order:2}
.alt-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  aspect-ratio:16/11;background:var(--ink);
}
.alt-media img{width:100%;height:100%;transition:transform .6s var(--ease)}
.alt-row:hover .alt-media img{transform:scale(1.03)}
.alt-media .media-label{
  position:absolute;left:14px;top:14px;z-index:2;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(18,10,38,.7);color:var(--star);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.alt-body h3{font-size:21px;margin-bottom:12px;color:var(--ink)}
.alt-body p{color:var(--muted);margin-bottom:16px;font-size:15.5px}
.alt-list{display:grid;gap:9px}
.alt-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--muted);line-height:1.7}
.alt-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--coral);box-shadow:0 0 0 3px rgba(255,92,57,.14);
}
.sticky-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:28px 26px;box-shadow:var(--sh-1);
}
.sticky-card h3{font-size:18px;margin-bottom:6px}
.sticky-card .sticky-note{font-size:13px;color:var(--weak);margin-bottom:18px}
.sticky-list{display:grid;gap:14px;margin-bottom:22px}
.sticky-list li{display:flex;gap:12px;font-size:14px;color:var(--muted);line-height:1.7}
.sticky-list .dot{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;
  background:rgba(27,16,53,.06);color:var(--ink);font-size:11px;font-weight:800;margin-top:2px;
}
.sticky-card .btn{width:100%}
.sticky-card .mini-link{display:block;text-align:center;font-size:13px;color:var(--weak);margin-top:14px}
.sticky-card .mini-link:hover{color:var(--coral)}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.check-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.check-no{
  font-size:26px;font-weight:800;line-height:1;color:var(--ink);
  letter-spacing:-1px;min-width:44px;
}
.check-item h3{font-size:16px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}

/* ---------- stats strip ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);padding:26px 22px;
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.stat-card:hover{border-color:rgba(255,194,75,.5);transform:translateY(-4px)}
.stat-num{font-size:32px;font-weight:800;color:var(--star);line-height:1.1;letter-spacing:-1px}
.stat-label{font-size:14px;color:rgba(243,239,248,.72);margin-top:8px;line-height:1.6}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:box-shadow .35s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--coral);transform:scaleY(0);transform-origin:top;
  transition:transform .35s var(--ease);
}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item[open]{box-shadow:var(--sh-2)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 58px 22px 26px;
  font-size:16.5px;font-weight:600;color:var(--ink);position:relative;
  transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--coral)}
.faq-item summary:focus-visible{outline:none;box-shadow:inset 0 0 0 3px rgba(255,92,57,.3)}
.faq-item summary::after{
  content:"";position:absolute;right:26px;top:29px;width:10px;height:10px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .35s var(--ease),border-color .25s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--coral)}
.faq-body{padding:0 26px 24px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-deep);color:#F3EFF8;
  border-radius:0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(2px 2px at 12% 30%,rgba(255,194,75,.75),transparent 60%),
                   radial-gradient(1.5px 1.5px at 62% 18%,rgba(255,255,255,.6),transparent 60%),
                   radial-gradient(1.8px 1.8px at 84% 68%,rgba(255,194,75,.55),transparent 60%),
                   radial-gradient(1.4px 1.4px at 34% 82%,rgba(255,255,255,.5),transparent 60%);
  opacity:.55;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:32px;padding:56px 0;flex-wrap:wrap;
}
.cta-inner h2{font-size:28px;color:#fff;margin-bottom:10px}
.cta-inner p{color:rgba(243,239,248,.74);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- back link ---------- */
.back-home{display:flex;justify-content:center;padding:0 0 8px}
.back-home a{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;
  color:var(--muted);padding:12px 22px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;transition:all .3s var(--ease);
}
.back-home a:hover{color:var(--ink);border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-1)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(243,239,248,.78);padding:72px 0 0;margin-top:var(--sec)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-text{margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(243,239,248,.5)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(243,239,248,.62);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(243,239,248,.68)}
.footer-col a:hover{color:var(--star)}
.footer-contact li{font-size:13.5px;line-height:1.75;color:rgba(243,239,248,.62)}
.footer-contact strong{color:rgba(243,239,248,.88);font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(243,239,248,.5);
}
.back-top{display:inline-flex;align-items:center;gap:6px;color:rgba(243,239,248,.7);font-size:13px}
.back-top svg{width:16px;height:16px}
.back-top:hover{color:var(--star)}

/* ---------- mobile tab bar ---------- */
.tab-bar{display:none}
@media (max-width:991px){
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .tab-bar{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:120;
    background:#fff;border-top:1px solid var(--line-soft);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -6px 20px rgba(27,16,53,.07);
  }
  .tab-bar ul{display:flex;align-items:stretch;margin:0;padding:0;list-style:none}
  .tab-bar li{flex:1 1 0;min-width:0}
  .tab-bar a{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
    padding:9px 2px 8px;font-size:10.5px;color:var(--weak);position:relative;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .tab-bar a svg{width:22px;height:22px}
  .tab-bar a.is-active{color:var(--ink);font-weight:700}
  .tab-bar a.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--ink);
  }
  .tab-bar a:hover{color:var(--ink)}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec:80px}
  .lead-grid{gap:32px}
  .alt-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px}
}
@media (max-width:991px){
  :root{--sec:72px}
  .main-nav{
    position:fixed;top:72px;right:0;bottom:0;width:84%;max-width:360px;
    background:#fff;flex-direction:column;align-items:flex-start;gap:4px;
    padding:26px 26px 40px;box-shadow:-16px 0 40px rgba(18,10,38,.18);
    transform:translateX(105%);transition:transform .35s var(--ease);
    z-index:110;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav a{width:100%;font-size:16px;padding:14px 0;border-bottom:1px solid var(--line-soft)}
  .main-nav a::after{display:none}
  .main-nav a.is-active{color:var(--coral)}
  .nav-toggle{display:block}
  .header-actions .btn-primary{display:none}
  .lead-grid{grid-template-columns:1fr;gap:28px}
  .alt-layout{grid-template-columns:1fr}
  .sticky-card{position:static}
  .alt-row{grid-template-columns:1fr;gap:20px;padding:28px 0}
  .alt-row:nth-child(even) .alt-media{order:0}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero h1{font-size:34px}
  .cta-inner{padding:44px 0}
}
@media (max-width:767px){
  .check-grid{grid-template-columns:1fr}
  .page-hero{padding:44px 0 52px}
  .page-hero h1{font-size:30px}
  .page-hero-sub{font-size:15px}
  h2{font-size:24px}
  .sec-head{margin-bottom:28px}
  .alt-body h3{font-size:19px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-desc{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-inner h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .hero-actions .btn{width:100%}
  .btn{padding:0 20px}
}
@media (max-width:575px){
  :root{--sec:56px;--gutter:18px}
  .stats-grid{grid-template-columns:1fr}
  .brand-sub{font-size:10px;letter-spacing:.1em}
  .brand-name{font-size:15.5px}
  .point-card{padding:18px}
  .check-item{padding:20px}
  .stat-num{font-size:28px}
}