/* roulang page: index */
:root{
  --c-brand:#FF6A1A;
  --c-brand-d:#D9500A;
  --c-deep:#0B2B26;
  --c-mint:#1FA37A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-line:#E6E3DC;
  --c-ink:#141B1A;
  --c-ink-2:#5A6564;
  --c-ink-3:#8A9291;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,43,38,.06),0 8px 24px rgba(11,43,38,.06);
  --sh-2:0 12px 28px rgba(11,43,38,.12);
  --sp-section:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--c-brand-d);}
h1,h2,h3,h4{margin:0 0 16px;color:var(--c-ink);font-weight:700;}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;letter-spacing:.5px;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35;}
h3{font-size:19px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.2em;color:var(--c-ink-2);}
ul,ol{margin:0 0 1.2em;padding-left:1.2em;}
li{margin-bottom:.5em;color:var(--c-ink-2);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:var(--sp-section) 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--c-deep);color:#fff;}
.section--dark h2,.section--dark h3{color:#fff;}
.section--dark p{color:rgba(255,255,255,.78);}
.sec-head{margin-bottom:48px;max-width:760px;}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--c-brand);font-weight:600;
  text-transform:uppercase;margin-bottom:12px;
}
.sec-head .eyebrow::before{content:"";width:28px;height:2px;background:var(--c-brand);display:inline-block;}
.sec-head p{margin:0;font-size:15px;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--c-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:padding .2s ease,box-shadow .2s ease;
}
.site-header.is-shrink{box-shadow:0 8px 24px rgba(0,0,0,.28);}
.nav-wrap{
  display:flex;align-items:center;gap:20px;
  height:72px;transition:height .2s ease;
}
.site-header.is-shrink .nav-wrap{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand:hover{opacity:.92;}
.brand-mark{width:36px;height:36px;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{color:#fff;font-size:15px;font-weight:700;letter-spacing:.3px;}
.brand-text span{color:rgba(255,255,255,.62);font-size:11px;letter-spacing:2px;}
.nav-channels{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto;}
.nav-channels a{
  position:relative;display:block;
  padding:8px 12px;font-size:14px;color:rgba(255,255,255,.78);
  border-radius:8px;white-space:nowrap;
}
.nav-channels a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-channels a:hover{color:#fff;}
.nav-channels a:hover::after{transform:scaleX(1);}
.nav-channels a.is-active{color:#fff;font-weight:600;}
.nav-channels a.is-active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;width:200px;padding:0 6px 0 14px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-pill);
}
.nav-search input{
  flex:1 1 auto;width:100%;height:100%;border:0;background:transparent;
  color:#fff;font-size:13px;outline:none;
}
.nav-search input::placeholder{color:rgba(255,255,255,.5);}
.nav-search button{
  width:28px;height:28px;border:0;border-radius:50%;
  background:transparent;color:rgba(255,255,255,.72);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .16s ease,color .16s ease;
}
.nav-search button:hover{background:rgba(255,255,255,.14);color:#fff;}
.nav-login{font-size:14px;color:rgba(255,255,255,.82);padding:8px 4px;}
.nav-login:hover{color:#fff;}
.btn-entry{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 20px;border-radius:var(--r-pill);
  background:var(--c-brand);color:#fff;font-size:14px;font-weight:600;
  transition:background .16s ease,transform .16s ease;
}
.btn-entry:hover{background:var(--c-brand-d);color:#fff;transform:translateY(-1px);}
.btn-entry:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid rgba(255,255,255,.18);
  background:transparent;border-radius:10px;color:#fff;cursor:pointer;
  align-items:center;justify-content:center;font-size:16px;
}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(86vw,340px);
  background:var(--c-deep);z-index:200;transform:translateX(102%);
  transition:transform .24s ease;padding:24px 20px;overflow-y:auto;
  box-shadow:-16px 0 40px rgba(0,0,0,.35);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:transparent;color:#fff;cursor:pointer;
}
.drawer nav a{
  display:block;padding:14px 4px;color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.09);font-size:15px;
}
.drawer nav a.is-active{color:var(--c-brand);font-weight:600;}
.drawer-search{display:flex;margin:20px 0;height:44px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);padding:0 6px 0 14px;align-items:center;gap:8px;}
.drawer-search input{flex:1;height:100%;border:0;background:transparent;color:#fff;outline:none;font-size:14px;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.drawer-actions .btn-entry{justify-content:center;height:44px;}
.drawer-actions .btn-ghost-light{justify-content:center;height:44px;}
.btn-ghost-light{
  display:inline-flex;align-items:center;gap:8px;padding:0 20px;height:44px;
  border:1px solid rgba(255,255,255,.35);border-radius:var(--r-pill);
  color:#fff;font-size:14px;background:transparent;
}
.btn-ghost-light:hover{color:#fff;border-color:var(--c-brand);background:rgba(255,106,26,.12);}
.backdrop{position:fixed;inset:0;background:rgba(6,20,18,.55);z-index:180;opacity:0;pointer-events:none;transition:opacity .2s ease;}
.backdrop.is-open{opacity:1;pointer-events:auto;}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:78vh;display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(11,43,38,.94) 0%,rgba(11,43,38,.78) 42%,rgba(11,43,38,.30) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:88px 0 64px;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:760px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,106,26,.16);border:1px solid rgba(255,106,26,.4);
  color:#FFB27F;font-size:12px;letter-spacing:1px;margin-bottom:20px;
}
.hero h1{color:#fff;max-width:16em;}
.hero h1 em{font-style:normal;color:var(--c-brand);}
.hero-sub{font-size:clamp(16px,1.8vw,20px);color:rgba(255,255,255,.82);margin:16px 0 32px;max-width:30em;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:48px;}
.btn-primary{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  background:var(--c-brand);color:#fff;font-size:15px;font-weight:600;
  border:1px solid var(--c-brand);
  transition:background .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary:hover{background:var(--c-brand-d);border-color:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:transparent;color:#fff;font-size:15px;font-weight:600;
  border:1px solid rgba(255,255,255,.5);
  transition:border-color .16s ease,background .16s ease,transform .16s ease;
}
.btn-outline:hover{color:#fff;border-color:var(--c-brand);background:rgba(255,106,26,.14);transform:translateY(-1px);}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:40px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-stats .stat b{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:28px;color:#fff;line-height:1.2;
}
.hero-stats .stat span{font-size:13px;color:rgba(255,255,255,.62);}

/* ===== 锚点条 ===== */
.anchor-bar{
  position:sticky;top:72px;z-index:100;background:var(--c-card);
  border-bottom:1px solid var(--c-line);
  transition:top .2s ease;
}
.is-shrink ~ .anchor-bar{top:60px;}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:0 20px;max-width:1200px;margin:0 auto;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  position:relative;padding:16px 14px;font-size:14px;color:var(--c-ink-2);white-space:nowrap;
  border-bottom:2px solid transparent;transition:color .16s ease,border-color .16s ease;
}
.anchor-inner a:hover{color:var(--c-brand);}
.anchor-inner a.is-active{color:var(--c-ink);font-weight:600;border-bottom-color:var(--c-brand);}

/* ===== 卖点区 ===== */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
  padding:48px 0;border-bottom:1px solid var(--c-line);
}
.feature-row:last-child{border-bottom:0;}
.feature-row.is-reverse .feature-media{order:2;}
.feature-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:600;color:var(--c-brand);
  letter-spacing:2px;margin-bottom:12px;
}
.feature-body h3{margin-bottom:14px;}
.feature-body p{margin-bottom:18px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;}
.text-link i{transition:transform .16s ease;}
.text-link:hover i{transform:translateX(2px);}
.feature-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid var(--c-line);box-shadow:var(--sh-1);
}

/* ===== 演示区 ===== */
.demo-grid{display:grid;grid-template-columns:360px 1fr;gap:64px;align-items:center;}
.phone-frame{
  width:100%;max-width:360px;margin:0 auto;border-radius:20px;
  background:#0F1F1C;border:1px solid rgba(255,255,255,.14);
  padding:14px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.04),0 24px 48px rgba(0,0,0,.35);
}
.phone-screen{
  background:#fff;border-radius:14px;overflow:hidden;
  box-shadow:inset 0 0 24px rgba(11,43,38,.06);
}
.phone-top{
  background:var(--c-deep);color:#fff;padding:14px 16px;
  display:flex;align-items:center;justify-content:space-between;font-size:12px;
}
.phone-top .dots{display:flex;gap:5px;}
.phone-top .dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.35);display:block;}
.phone-body{padding:18px 16px 22px;}
.phone-body .field-label{font-size:12px;color:var(--c-ink-3);margin-bottom:6px;}
.phone-body .field{
  height:40px;border:1px solid var(--c-line);border-radius:10px;
  background:#FBFAF7;margin-bottom:14px;display:flex;align-items:center;padding:0 12px;
  font-size:13px;color:var(--c-ink-3);
}
.phone-body .field.is-fill{color:var(--c-ink);border-color:var(--c-brand);}
.phone-body .field-btn{
  height:42px;border-radius:10px;background:var(--c-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;
}
.phone-body .hint{font-size:11px;color:var(--c-ink-3);text-align:center;margin-top:12px;}
.steps{position:relative;padding-left:34px;}
.steps::before{content:"";position:absolute;left:11px;top:12px;bottom:12px;width:1px;background:var(--c-line);}
.step-item{position:relative;padding-bottom:28px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:-29px;top:8px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--c-brand);
}
.step-item b{display:block;font-size:16px;color:var(--c-ink);margin-bottom:4px;font-weight:600;}
.step-item span{font-size:14px;color:var(--c-ink-2);}

/* ===== 证据区 ===== */
.proof-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:40px;box-shadow:var(--sh-1);}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:40px;}
.proof-grid .item{padding:20px;border-right:1px solid var(--c-line);}
.proof-grid .item:last-child{border-right:0;}
.proof-grid .item b{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:38px;line-height:1.1;color:var(--c-brand);
}
.proof-grid .item span{font-size:13px;color:var(--c-ink-3);}
.feedback{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-top:32px;border-top:1px solid var(--c-line);}
.feedback .fb{display:flex;gap:12px;align-items:flex-start;}
.fb-avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:15px;
}
.fb-avatar.a1{background:var(--c-brand);}
.fb-avatar.a2{background:var(--c-mint);}
.fb-avatar.a3{background:#2E4B45;}
.fb-text{font-size:14px;color:var(--c-ink-2);line-height:1.7;}
.fb-text em{display:block;font-style:normal;font-size:12px;color:var(--c-ink-3);margin-top:4px;}

/* ===== 使用方案 ===== */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  position:relative;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;transition:box-shadow .18s ease,transform .18s ease;
}
.plan:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.plan.is-featured{border:2px solid var(--c-brand);}
.plan-tag{
  position:absolute;top:-13px;left:24px;
  background:var(--c-brand);color:#fff;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:var(--r-pill);
}
.plan h3{margin-bottom:6px;font-size:18px;}
.plan .plan-desc{font-size:13px;color:var(--c-ink-3);margin-bottom:20px;}
.plan .plan-price{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--c-ink);margin-bottom:22px;
}
.plan .plan-price small{font-size:13px;font-weight:400;color:var(--c-ink-3);margin-left:6px;font-family:var(--font-cn);}
.plan ul{list-style:none;padding:0;margin:0 0 24px;flex:1 1 auto;}
.plan li{
  display:flex;gap:10px;align-items:flex-start;font-size:14px;
  padding:10px 0;border-bottom:1px solid var(--c-line);margin:0;
}
.plan li:last-child{border-bottom:0;}
.plan li i{font-size:13px;margin-top:5px;}
.plan li i.yes{color:var(--c-mint);}
.plan li i.no{color:var(--c-ink-3);}
.plan .btn-primary,.plan .btn-outline-dark{justify-content:center;width:100%;height:44px;font-size:14px;}
.btn-outline-dark{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--c-deep);border-radius:var(--r-btn);
  color:var(--c-deep);background:transparent;font-weight:600;
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.btn-outline-dark:hover{background:var(--c-deep);color:#fff;transform:translateY(-1px);}

/* ===== 资讯列表 ===== */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;flex-wrap:wrap;}
.news-head h2{margin-bottom:6px;}
.news-head p{margin:0;font-size:14px;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .18s ease,transform .18s ease;
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.news-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:#EDEAE3;}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(255,106,26,.12);color:var(--c-brand-d);font-weight:600;
  align-self:flex-start;margin-bottom:14px;
}
.badge.mint{background:rgba(31,163,122,.13);color:#157A5B;}
.news-body h3{
  font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:var(--c-ink);}
.news-body h3 a:hover{color:var(--c-brand);}
.news-body p{
  font-size:14px;margin-bottom:18px;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-3);}
.news-meta span{display:inline-flex;align-items:center;gap:6px;}
.empty-state{
  grid-column:1/-1;background:var(--c-card);border:1px dashed var(--c-line);
  border-radius:var(--r-card);padding:56px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--c-line);display:block;margin-bottom:14px;}
.empty-state p{margin-bottom:10px;font-size:15px;}

/* ===== FAQ ===== */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .18s ease;
}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,106,26,.12);color:var(--c-brand);font-size:12px;
  transition:transform .2s ease;
}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ===== 尾部 CTA ===== */
.cta-band{background:var(--c-deep);padding:80px 0;text-align:center;}
.cta-band h2{color:#fff;max-width:22em;margin:0 auto 14px;}
.cta-band p{color:rgba(255,255,255,.72);max-width:34em;margin:0 auto 30px;}
.cta-band .btn-primary{height:50px;}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.7);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand b{color:#fff;font-size:15px;}
.footer-brand span{display:block;font-size:11px;color:rgba(255,255,255,.55);letter-spacing:2px;}
.site-footer p{color:rgba(255,255,255,.62);font-size:14px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin:0;}
.footer-col a{
  display:block;padding:7px 0;color:rgba(255,255,255,.7);font-size:14px;
  transition:color .16s ease,padding-left .16s ease;
}
.footer-col a:hover{color:var(--c-brand);padding-left:4px;}
.footer-actions{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.footer-actions .btn-entry{justify-content:center;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:130;
  display:flex;align-items:center;gap:14px;
  padding:10px 10px 10px 20px;border-radius:var(--r-pill);
  background:var(--c-card);border:1px solid var(--c-line);box-shadow:var(--sh-2);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .22s ease,transform .22s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta span{font-size:13px;color:var(--c-ink-2);}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:140;
  display:none;align-items:center;gap:12px;
  height:56px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
  background:var(--c-card);border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px rgba(11,43,38,.08);
}
.mobile-bar .btn-primary,.mobile-bar .btn-outline-dark{
  flex:1 1 0;height:40px;justify-content:center;font-size:14px;
}

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

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .nav-search{width:150px;}
  .nav-channels a{padding:8px 9px;font-size:13px;}
}
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .nav-channels,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-wrap{justify-content:space-between;}
  .hero{min-height:auto;padding:72px 0 56px;}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .feature-row.is-reverse .feature-media{order:0;}
  .demo-grid{grid-template-columns:1fr;gap:40px;}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
  .proof-grid .item{border-right:0;border-bottom:1px solid var(--c-line);}
  .proof-grid .item:nth-child(3),.proof-grid .item:nth-child(4){border-bottom:0;}
  .feedback{grid-template-columns:1fr;}
  .plan-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .float-cta{display:none;}
  .mobile-bar{display:flex;}
  body{padding-bottom:56px;}
  .anchor-bar{top:60px;}
  .is-shrink ~ .anchor-bar{top:60px;}
}
@media (max-width:639px){
  :root{--sp-section:48px;}
  .container{padding:0 16px;}
  .hero-stats{gap:24px;}
  .hero-stats .stat b{font-size:24px;}
  .news-grid{grid-template-columns:1fr;}
  .proof-card{padding:24px;}
  .proof-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .proof-grid .item{padding:12px;}
  .proof-grid .item b{font-size:28px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn-primary,.btn-outline{width:100%;justify-content:center;}
  .hero-cta{flex-direction:column;align-items:stretch;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --c-brand:#FF6A1A;
  --c-brand-d:#D9500A;
  --c-deep:#0B2B26;
  --c-deep-2:#123A33;
  --c-mint:#1FA37A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-line:#E6E3DC;
  --c-ink:#141B1A;
  --c-ink-2:#5A6564;
  --c-ink-3:#8A9291;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(11,43,38,.06),0 8px 24px rgba(11,43,38,.06);
  --sh-2:0 12px 28px rgba(11,43,38,.12);
  --maxw:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .16s ease,transform .16s ease,background-color .16s ease;}
button{font-family:inherit;font-size:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-cn);color:var(--c-ink);margin:0;font-weight:700;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
@media (max-width:639px){.container{padding:0 16px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--c-deep);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(11,43,38,.28);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s ease;}
.site-header.is-scrolled .nav-wrap{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:#fff;}
.brand-mark{width:36px;height:36px;flex:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.16;font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-text span{font-size:11px;font-weight:500;letter-spacing:.22em;color:#9CC6B9;}
.nav-channels{display:flex;align-items:center;gap:4px;margin-right:auto;}
.nav-channels a{position:relative;display:inline-block;padding:9px 12px;font-size:14.5px;color:rgba(255,255,255,.76);border-radius:8px;}
.nav-channels a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-channels a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-channels a:hover::after,
.nav-channels a.is-active::after{transform:scaleX(1);}
.nav-channels a.is-active{color:#fff;font-weight:600;}
.nav-tools{display:flex;align-items:center;gap:14px;flex:none;}
.nav-search{
  display:flex;align-items:center;height:40px;padding:0 5px 0 14px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);border-radius:999px;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-search:focus-within{border-color:var(--c-brand);background:rgba(255,255,255,.15);}
.nav-search input{width:168px;height:100%;border:0;background:transparent;color:#fff;font-size:14px;outline:none;}
.nav-search input::placeholder{color:rgba(255,255,255,.55);}
.nav-search button{
  width:30px;height:30px;border:0;border-radius:50%;background:var(--c-brand);color:#fff;
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:background-color .16s ease;
}
.nav-search button:hover{background:var(--c-brand-d);}
.nav-login{color:rgba(255,255,255,.86);font-size:14.5px;padding:6px 4px;}
.nav-login:hover{color:var(--c-brand);}
.btn-entry{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;background:var(--c-brand);color:#fff;
  font-size:14.5px;font-weight:600;line-height:1.2;white-space:nowrap;
  box-shadow:0 6px 16px rgba(255,106,26,.24);
  transition:background-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-entry:hover{background:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(217,80,10,.3);}
.btn-entry:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;cursor:pointer;
}
.nav-toggle:hover{background:rgba(255,255,255,.16);}
.nav-drawer{display:none;}
@media (max-width:1023px){
  .nav-channels,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-drawer.is-open{
    display:block;
    background:var(--c-deep-2);
    border-top:1px solid rgba(255,255,255,.08);
    padding:14px 0 20px;
  }
  .nav-drawer ul{display:flex;flex-direction:column;}
  .nav-drawer a{display:block;padding:12px 4px;color:rgba(255,255,255,.86);font-size:15px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-drawer a:hover{color:var(--c-brand);}
  .drawer-tools{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px;}
  .drawer-search{
    display:flex;align-items:center;width:100%;height:44px;padding:0 6px 0 16px;
    background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:999px;
  }
  .drawer-search input{flex:1;height:100%;border:0;background:transparent;color:#fff;outline:none;font-size:14px;}
  .drawer-search button{width:32px;height:32px;border:0;border-radius:50%;background:var(--c-brand);color:#fff;cursor:pointer;}
}
@media (max-width:639px){
  .brand-text{font-size:14px;}
  .brand-text span{letter-spacing:.16em;}
  .nav-wrap{gap:12px;}
  .nav-login{display:none;}
}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);background:var(--c-brand);color:#fff;
  font-size:15px;font-weight:600;border:1px solid var(--c-brand);cursor:pointer;
  transition:background-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary:hover{background:var(--c-brand-d);border-color:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(217,80,10,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);background:#fff;color:var(--c-deep);
  font-size:15px;font-weight:600;border:1px solid var(--c-deep);cursor:pointer;
  transition:background-color .16s ease,color .16s ease,transform .16s ease;
}
.btn-secondary:hover{background:var(--c-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);background:transparent;color:#fff;
  font-size:15px;font-weight:600;border:1px solid rgba(255,255,255,.42);
  transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.btn-ghost-light:hover{border-color:var(--c-brand);color:var(--c-brand);transform:translateY(-1px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:14.5px;}
.btn-text i{transition:transform .16s ease;}
.btn-text:hover{color:var(--c-brand-d);}
.btn-text:hover i{transform:translateX(2px);}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;}
.badge-brand{background:#FFEDE2;color:var(--c-brand-d);}
.badge-mint{background:#E4F5EF;color:#127257;}
.badge-plain{background:#F1EFE9;color:var(--c-ink-2);}

/* ---------- reading progress ---------- */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--c-brand);z-index:120;transition:width .1s linear;}

/* ---------- article head ---------- */
.article-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,rgba(255,255,255,.6) 60%,var(--c-bg) 100%);
  padding:34px 0 28px;
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);line-height:1.7;}
.breadcrumb a{color:var(--c-ink-3);}
.breadcrumb a:hover{color:var(--c-brand);}
.breadcrumb .sep{color:#C8C4BA;}
.breadcrumb .crumb-title{color:var(--c-ink-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  margin:18px 0 16px;
  font-size:clamp(26px,4.2vw,42px);
  line-height:1.28;
  letter-spacing:-.01em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--c-ink-3);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:var(--c-brand);font-size:12px;}
.article-lead{
  margin-top:22px;padding:18px 22px;border-radius:var(--r-card);
  background:#FFFFFF;border:1px solid var(--c-line);box-shadow:var(--sh-1);
  font-size:15px;line-height:1.9;color:var(--c-ink-2);
}

/* ---------- layout ---------- */
.article-section{padding:48px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;max-width:1120px;margin:0 auto;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:220px minmax(0,750px);justify-content:center;gap:56px;}
}
.toc-panel{display:none;}
@media (min-width:1024px){
  .toc-panel{display:block;}
  .toc-inner{position:sticky;top:96px;}
}
.toc-inner{padding:18px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);}
.toc-title{font-size:13px;letter-spacing:.14em;color:var(--c-ink-3);font-weight:600;margin-bottom:12px;}
.toc-inner ul{display:flex;flex-direction:column;}
.toc-inner li{border-bottom:1px solid var(--c-line);}
.toc-inner li:last-child{border-bottom:0;}
.toc-inner a{display:block;padding:9px 0;font-size:13.5px;color:var(--c-ink-2);line-height:1.6;}
.toc-inner a:hover{color:var(--c-brand);}
.toc-inner a.is-current{color:var(--c-brand);font-weight:600;}

/* ---------- article body ---------- */
.article-body{
  max-width:750px;
  font-size:16px;
  line-height:1.95;
  color:#222B2A;
}
.article-body p{margin:0 0 1.35em;}
.article-body h2{
  position:relative;
  margin:2em 0 .9em;
  padding-left:14px;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.45;
  color:var(--c-deep);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:1.05em;border-radius:2px;background:var(--c-brand);
}
.article-body h3{margin:1.7em 0 .7em;font-size:19px;line-height:1.55;font-weight:600;color:var(--c-ink);}
.article-body h4{margin:1.4em 0 .6em;font-size:16.5px;font-weight:600;color:var(--c-ink-2);}
.article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:4px;}
.article-body li{position:relative;padding-left:20px;margin-bottom:.55em;}
.article-body ul > li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--c-brand);
}
.article-body ol{counter-reset:olist;}
.article-body ol > li{counter-increment:olist;}
.article-body ol > li::before{
  content:counter(olist) ".";position:absolute;left:0;top:0;color:var(--c-brand);font-weight:700;font-size:14px;font-family:var(--font-num);
}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--c-deep);background:#F2F5F3;
  border-radius:0 var(--r-img) var(--r-img) 0;font-size:14.5px;line-height:1.85;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:1.6em auto;box-shadow:var(--sh-1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-ink-3);margin-top:8px;}
.article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--c-brand-d);}
.article-body strong{font-weight:700;color:var(--c-ink);}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-body th{background:#F4F2EC;font-weight:600;color:var(--c-deep);}
.article-body tr:nth-child(even) td{background:#FCFBF9;}
.article-body code{background:#F1EFE9;border-radius:6px;padding:2px 6px;font-size:14px;font-family:var(--font-num);color:var(--c-brand-d);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.2em 0;}

.article-empty{
  max-width:750px;padding:40px 28px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);text-align:center;
}
.article-empty .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;background:#FFEDE2;color:var(--c-brand-d);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.article-empty h2{font-size:22px;margin-bottom:10px;}
.article-empty p{color:var(--c-ink-2);}

/* ---------- article foot ---------- */
.article-foot{max-width:750px;margin-top:40px;padding-top:26px;border-top:1px solid var(--c-line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:26px;}
.tag-row .label{font-size:13.5px;color:var(--c-ink-3);}
.tag-row a{display:inline-flex;padding:5px 13px;border-radius:999px;background:#F1EFE9;color:var(--c-ink-2);font-size:12.5px;}
.tag-row a:hover{background:#FFEDE2;color:var(--c-brand-d);}
.author-box{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:18px 20px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);margin-bottom:26px;
}
.author-avatar{
  width:44px;height:44px;border-radius:50%;background:var(--c-deep);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:none;
}
.author-box b{display:block;font-size:15px;}
.author-box span{font-size:13px;color:var(--c-ink-3);}
.back-links{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- related ---------- */
.related-section{padding:0 0 64px;}
.related-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;max-width:1120px;margin:0 auto 20px;}
.related-head h2{font-size:clamp(20px,2.6vw,26px);}
.related-list{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.related-item{
  display:flex;gap:14px;align-items:center;padding:14px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;
}
.related-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.related-thumb{width:104px;height:72px;flex:none;border-radius:var(--r-img);overflow:hidden;background:#EDEAE3;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.related-item:hover .related-thumb img{transform:scale(1.04);}
.related-item h3{font-size:15.5px;line-height:1.6;font-weight:600;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-item p{font-size:13px;color:var(--c-ink-3);margin:0;}
@media (max-width:767px){.related-list{grid-template-columns:1fr;}}

/* ---------- flat cta ---------- */
.cta-flat{background:var(--c-deep);padding:44px 0;}
.cta-flat-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;}
.cta-flat h2{color:#fff;font-size:clamp(20px,2.6vw,26px);margin-bottom:8px;}
.cta-flat p{color:rgba(255,255,255,.72);margin:0;font-size:14.5px;}
.cta-flat-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.76);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;}
.footer-brand b{display:block;color:#fff;font-size:15px;line-height:1.3;}
.footer-brand span span{font-size:11px;letter-spacing:.2em;color:#9CC6B9;}
.footer-grid p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.66);margin:0;}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.1em;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;}
.footer-col li{border-bottom:1px solid rgba(255,255,255,.08);}
.footer-col li:last-child{border-bottom:0;}
.footer-col a{display:block;padding:9px 0;font-size:14px;color:rgba(255,255,255,.74);}
.footer-col a:hover{color:var(--c-brand);}
.footer-actions{display:flex;flex-wrap:wrap;gap:12px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 24px;}
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-brand:#FF6A1A;
  --c-brand-d:#D9500A;
  --c-deep:#0B2B26;
  --c-deep-2:#123A33;
  --c-mint:#1FA37A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-line:#E6E3DC;
  --c-ink:#141B1A;
  --c-ink-2:#5A6564;
  --c-ink-3:#8A9291;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(11,43,38,.06),0 8px 24px rgba(11,43,38,.06);
  --shadow-2:0 12px 28px rgba(11,43,38,.12);
  --gap:24px;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px;transition:color .16s ease,background-color .16s ease,border-color .16s ease;}
a:hover{color:var(--c-brand-d);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;font-weight:700;letter-spacing:.2px;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;color:var(--c-deep);}
h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--c-ink);}
p{color:var(--c-ink-2);}
p + p{margin-top:1.2em;}
ul,ol{list-style:none;padding:0;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--c-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(4,20,17,.28);}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:72px;transition:min-height .2s ease;}
.site-header.is-scrolled .nav-wrap{min-height:60px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;flex:0 0 auto;}
.brand-mark{width:38px;height:38px;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:16px;font-weight:700;color:#fff;letter-spacing:.2px;}
.brand-text span{font-size:12px;color:rgba(255,255,255,.66);letter-spacing:2px;}
.nav-channels{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-channels a{
  position:relative;display:inline-block;padding:10px 12px;
  color:rgba(255,255,255,.82);font-size:15px;text-decoration:none;border-radius:8px;
}
.nav-channels a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-channels a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-channels a:hover::after,.nav-channels a.is-active::after{transform:scaleX(1);}
.nav-channels a.is-active{color:#fff;font-weight:600;}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;height:40px;padding:0 6px 0 14px;
  transition:border-color .16s ease,background-color .16s ease;
}
.nav-search:focus-within{border-color:var(--c-brand);background:rgba(255,255,255,.16);}
.nav-search input{
  width:170px;height:100%;border:0;background:transparent;color:#fff;font-size:14px;outline:none;
}
.nav-search input::placeholder{color:rgba(255,255,255,.5);}
.nav-search button{
  width:30px;height:30px;border-radius:50%;color:#fff;background:rgba(255,255,255,.12);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
}
.nav-search button:hover{background:var(--c-brand);}
.nav-login{color:rgba(255,255,255,.86);text-decoration:none;font-size:15px;padding:8px 10px;border-radius:8px;}
.nav-login:hover{color:#fff;background:rgba(255,255,255,.08);}
.btn-entry{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-brand);color:#fff;text-decoration:none;
  border-radius:999px;padding:10px 20px;font-size:15px;font-weight:600;
  box-shadow:0 6px 16px rgba(255,106,26,.28);
  transition:background-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-entry:hover{background:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,106,26,.34);}
.btn-entry:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;color:#fff;
  background:rgba(255,255,255,.1);align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{background:rgba(255,255,255,.18);}
.nav-drawer{
  position:fixed;inset:0;z-index:120;background:rgba(6,22,19,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.nav-drawer.is-open{opacity:1;visibility:visible;}
.nav-drawer-inner{
  position:absolute;top:0;right:0;width:82%;max-width:340px;height:100%;
  background:var(--c-deep);padding:24px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .24s ease;
  display:flex;flex-direction:column;gap:8px;
}
.nav-drawer.is-open .nav-drawer-inner{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-close{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.1);color:#fff;}
.nav-drawer .drawer-link{
  display:block;padding:13px 12px;border-radius:10px;color:rgba(255,255,255,.86);
  text-decoration:none;font-size:15px;border:1px solid rgba(255,255,255,.08);
}
.nav-drawer .drawer-link:hover,.nav-drawer .drawer-link.is-active{background:rgba(255,106,26,.16);color:#fff;border-color:rgba(255,106,26,.5);}
.nav-drawer .nav-search{width:100%;margin:8px 0;}
.nav-drawer .nav-search input{width:100%;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:8px;}

/* ---------- 页头带 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--c-deep);
  padding:56px 0 60px;
  min-height:200px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,43,38,.94) 0%,rgba(11,43,38,.72) 52%,rgba(11,43,38,.42) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{font-size:13px;color:rgba(255,255,255,.7);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;}
.crumb a{color:rgba(255,255,255,.78);text-decoration:none;}
.crumb a:hover{color:var(--c-brand);}
.crumb .sep{color:rgba(255,255,255,.34);}
.page-hero h1{color:#fff;max-width:20em;}
.page-hero .hero-sub{margin-top:14px;color:rgba(255,255,255,.84);font-size:17px;max-width:44em;line-height:1.8;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags .tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;
  padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.12);
  color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.16);
}
.hero-tags .tag i{color:var(--c-brand);}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sec-y) 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-brand-d);letter-spacing:1px;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:26px;height:3px;border-radius:2px;background:var(--c-brand);}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:999px;background:rgba(255,106,26,.12);color:var(--c-brand-d);
}
.badge.is-mint{background:rgba(31,163,122,.14);color:#14775A;}

/* ---------- 说明段 ---------- */
.intro-block{background:var(--c-card);border-bottom:1px solid var(--c-line);}
.intro-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:start;}
.intro-main h2{margin-bottom:20px;}
.intro-main p{font-size:16.5px;}
.intro-side{
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-1);
}
.intro-side h3{font-size:16px;margin-bottom:16px;color:var(--c-deep);}
.dot-list li{
  position:relative;padding:12px 0 12px 22px;font-size:15px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.dot-list li:last-child{border-bottom:0;padding-bottom:0;}
.dot-list li::before{
  content:"";position:absolute;left:2px;top:20px;width:8px;height:8px;border-radius:2px;background:var(--c-brand);
}
.intro-side .dot-list li b{color:var(--c-deep);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(255,106,26,.55),rgba(31,163,122,.35),rgba(230,227,220,1));
}
.tl-item{position:relative;padding-left:72px;padding-bottom:52px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;left:0;top:4px;width:48px;height:48px;border-radius:50%;
  background:var(--c-deep);color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:Inter,"PingFang SC",sans-serif;font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 6px 18px rgba(11,43,38,.22);
  border:3px solid var(--c-bg);
}
.tl-item.is-key .tl-node{background:var(--c-brand);box-shadow:0 6px 18px rgba(255,106,26,.32);}
.tl-body{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:1.25fr .85fr;gap:28px;align-items:start;
  transition:box-shadow .18s ease,transform .18s ease;
}
.tl-body:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.tl-text h3{margin:14px 0 12px;color:var(--c-deep);}
.tl-text p{font-size:15.5px;}
.tl-figure{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);aspect-ratio:4/3;background:#EFEDE7;}
.tl-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.tl-body:hover .tl-figure img{transform:scale(1.03);}
.tl-note{
  margin-top:16px;padding:14px 16px;border-left:3px solid var(--c-mint);
  background:rgba(31,163,122,.07);border-radius:0 10px 10px 0;
  font-size:14px;color:var(--c-ink-2);line-height:1.8;
}
.tl-note b{color:var(--c-deep);}

/* ---------- 相关栏目 ---------- */
.related{background:var(--c-card);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.related-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-item{
  display:flex;flex-direction:column;gap:10px;padding:24px;border-radius:var(--r-card);
  border:1px solid var(--c-line);background:var(--c-bg);text-decoration:none;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.rel-item:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:rgba(255,106,26,.4);}
.rel-item .rel-top{display:flex;align-items:center;gap:10px;}
.rel-item i{width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:rgba(255,106,26,.12);color:var(--c-brand-d);font-size:15px;}
.rel-item h3{font-size:16.5px;color:var(--c-deep);text-decoration:none;}
.rel-item p{font-size:14px;color:var(--c-ink-3);line-height:1.75;}
.rel-item .rel-more{font-size:13.5px;font-weight:600;color:var(--c-brand-d);display:inline-flex;align-items:center;gap:6px;}
.rel-item:hover .rel-more i{background:transparent;width:auto;height:auto;border-radius:0;}
.rel-item:hover .rel-more{gap:9px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item.is-open{border-color:rgba(255,106,26,.45);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--c-deep);
  line-height:1.6;
}
.faq-q:hover{color:var(--c-brand-d);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--c-line);color:var(--c-brand-d);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{background:var(--c-brand);border-color:var(--c-brand);color:#fff;transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a-inner{padding:0 24px 22px;font-size:15.5px;color:var(--c-ink-2);line-height:1.9;}

/* ---------- CTA ---------- */
.cta-band{background:var(--c-deep);color:#fff;padding:76px 0;text-align:center;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6;
}
.cta-band .container{position:relative;z-index:2;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.76);max-width:620px;margin:0 auto 28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.btn-primary{
  display:inline-flex;align-items:center;gap:9px;background:var(--c-brand);color:#fff;
  text-decoration:none;border-radius:var(--r-btn);padding:14px 28px;font-size:16px;font-weight:600;
  box-shadow:0 10px 24px rgba(255,106,26,.3);
  transition:background-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary:hover{background:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,106,26,.36);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;background:transparent;color:#fff;
  text-decoration:none;border:1.5px solid rgba(255,255,255,.42);border-radius:var(--r-btn);
  padding:13px 26px;font-size:16px;font-weight:600;
  transition:border-color .16s ease,background-color .16s ease,transform .16s ease;
}
.btn-ghost:hover{border-color:var(--c-brand);color:#fff;background:rgba(255,106,26,.14);transform:translateY(-1px);}
.btn-ghost-light{
  display:inline-flex;align-items:center;gap:8px;border:1.5px solid rgba(255,255,255,.34);
  color:#fff;text-decoration:none;border-radius:var(--r-btn);padding:11px 20px;font-size:14.5px;font-weight:600;
  transition:border-color .16s ease,background-color .16s ease;
}
.btn-ghost-light:hover{border-color:var(--c-brand);background:rgba(255,106,26,.16);color:#fff;}
.text-link{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:15px;text-decoration:none;color:var(--c-brand-d);}
.text-link i{transition:transform .16s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:36px;height:36px;}
.footer-brand span{display:flex;flex-direction:column;line-height:1.15;}
.footer-brand b{color:#fff;font-size:16px;}
.footer-brand span span{font-size:12px;color:rgba(255,255,255,.6);letter-spacing:2px;}
.site-footer p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.8;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul li{border-bottom:1px solid rgba(255,255,255,.08);}
.footer-col ul li:last-child{border-bottom:0;}
.footer-col ul li a{
  display:block;padding:10px 0;color:rgba(255,255,255,.7);text-decoration:none;font-size:14.5px;
  transition:color .16s ease,padding-left .16s ease;
}
.footer-col ul li a:hover{color:var(--c-brand);padding-left:4px;}
.footer-actions{display:flex;flex-wrap:wrap;gap:10px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);text-decoration:none;}
.footer-bottom a:hover{color:var(--c-brand);}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{animation:none !important;transition-duration:.001ms !important;}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--sec-y:72px;}
  .nav-channels{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-login{display:none;}
  .nav-wrap{gap:12px;justify-content:space-between;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .tl-body{grid-template-columns:1fr;gap:20px;}
  .tl-figure{order:-1;}
  .related-list{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:767px){
  .brand-text b{font-size:14.5px;}
  .page-hero{padding:40px 0 44px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .timeline::before{left:19px;}
  .tl-item{padding-left:58px;padding-bottom:36px;}
  .tl-node{width:40px;height:40px;font-size:13.5px;}
  .tl-body{padding:20px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .faq-q{font-size:15.5px;padding:17px 18px;}
  .faq-a-inner{padding:0 18px 18px;font-size:15px;}
  .cta-band{padding:56px 0;}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%;justify-content:center;}
}
@media screen and (max-width:639px){
  .container{padding:0 16px;}
  .related-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px;}
  .btn-entry{padding:9px 16px;font-size:14px;}
  .brand-mark{width:32px;height:32px;}
}

/* roulang page: category2 */
:root{
  --c-brand:#FF6A1A;
  --c-brand-d:#D9500A;
  --c-deep:#0B2B26;
  --c-deep-2:#123B33;
  --c-mint:#1FA37A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-line:#E6E3DC;
  --c-ink:#141B1A;
  --c-ink-2:#5A6564;
  --c-ink-3:#8A9291;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,43,38,.06),0 8px 24px rgba(11,43,38,.06);
  --sh-2:0 12px 28px rgba(11,43,38,.12);
  --fs-h1:clamp(28px,4.2vw,40px);
  --fs-h2:clamp(22px,3vw,32px);
  --fs-h3:19px;
  --c-badge-orange:#FFE9DC;
  --c-badge-mint:#E1F4EC;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-brand);text-decoration:none;text-underline-offset:3px;transition:color .16s ease,opacity .16s ease;}
a:hover{color:var(--c-brand-d);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--c-ink);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-deep);
  transition:box-shadow .18s ease,background .18s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.22);}
.nav-wrap{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
  transition:min-height .18s ease;
}
.site-header.is-scrolled .nav-wrap{min-height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;text-decoration:none;}
.brand:hover{color:#fff;}
.brand-mark{width:36px;height:36px;flex:0 0 auto;border-radius:10px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:.5px;color:#fff;}
.brand-text span{font-size:12px;color:#9FBDB4;letter-spacing:2px;}

.nav-channels{display:flex;align-items:center;gap:6px;flex:1 1 auto;}
.nav-channels a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:14.5px;
  color:#D8E5E0;
  border-radius:8px;
  white-space:nowrap;
  transition:color .16s ease,background .16s ease;
}
.nav-channels a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-channels a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-channels a:hover::after{transform:scaleX(1);}
.nav-channels a.is-active{color:#fff;font-weight:600;background:rgba(255,106,26,.14);}
.nav-channels a.is-active::after{transform:scaleX(1);}

.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;
  height:40px;width:230px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-pill);
  padding:0 6px 0 14px;
  transition:border-color .16s ease,background .16s ease;
}
.nav-search:focus-within{border-color:var(--c-brand);background:rgba(255,255,255,.16);}
.nav-search input{
  flex:1 1 auto;min-width:0;
  border:0;background:transparent;color:#fff;
  font-size:13.5px;height:38px;
}
.nav-search input::placeholder{color:#9FBDB4;}
.nav-search input:focus{outline:none;}
.nav-search button{
  width:32px;height:32px;border:0;border-radius:50%;
  background:var(--c-brand);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .16s ease,transform .16s ease;
}
.nav-search button:hover{background:var(--c-brand-d);}
.nav-search button:active{transform:translateY(1px);}
.nav-login{font-size:14px;color:#D8E5E0;padding:8px 6px;white-space:nowrap;}
.nav-login:hover{color:#fff;}
.btn-entry{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 20px;
  background:var(--c-brand);color:#fff;
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;white-space:nowrap;
  box-shadow:0 6px 16px rgba(255,106,26,.30);
  transition:background .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-entry:hover{background:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,106,26,.34);}
.btn-entry:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:42px;height:42px;border:1px solid rgba(255,255,255,.2);
  border-radius:10px;background:transparent;color:#fff;font-size:17px;cursor:pointer;
  transition:background .16s ease,border-color .16s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1);border-color:var(--c-brand);}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(11,43,38,.55);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.nav-drawer.is-open{opacity:1;visibility:visible;}
.nav-drawer-panel{
  position:absolute;top:0;right:0;bottom:0;
  width:min(84vw,340px);
  background:var(--c-deep);
  padding:24px 20px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .24s ease;
  display:flex;flex-direction:column;gap:18px;
}
.nav-drawer.is-open .nav-drawer-panel{transform:translateX(0);}
.drawer-close{
  align-self:flex-end;
  width:40px;height:40px;border-radius:10px;
  border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;
  font-size:16px;cursor:pointer;
}
.drawer-close:hover{border-color:var(--c-brand);}
.drawer-links{display:flex;flex-direction:column;gap:2px;}
.drawer-links a{
  display:block;padding:13px 12px;border-radius:10px;
  color:#D8E5E0;font-size:15px;
  transition:background .16s ease,color .16s ease;
}
.drawer-links a:hover{background:rgba(255,255,255,.08);color:#fff;}
.drawer-links a.is-active{background:rgba(255,106,26,.16);color:#fff;font-weight:600;}
.drawer-search{display:flex;align-items:center;height:44px;background:rgba(255,255,255,.1);border-radius:var(--r-pill);padding:0 6px 0 14px;border:1px solid rgba(255,255,255,.16);}
.drawer-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;color:#fff;height:42px;font-size:14px;}
.drawer-search input::placeholder{color:#9FBDB4;}
.drawer-search input:focus{outline:none;}
.drawer-search button{width:34px;height:34px;border:0;border-radius:50%;background:var(--c-brand);color:#fff;cursor:pointer;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.drawer-actions .btn-entry{justify-content:center;}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;
  border:1px solid rgba(255,255,255,.34);
  border-radius:var(--r-pill);
  color:#fff;font-size:14px;font-weight:500;
  transition:border-color .16s ease,background .16s ease,transform .16s ease;
}
.btn-ghost-light:hover{border-color:var(--c-brand);background:rgba(255,106,26,.14);color:#fff;transform:translateY(-1px);}

/* ---------- 页头带 ---------- */
.page-hero{
  position:relative;
  min-height:210px;
  display:flex;align-items:center;
  background:
    linear-gradient(100deg,rgba(11,43,38,.94) 0%,rgba(18,59,51,.86) 52%,rgba(11,43,38,.72) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  color:#fff;
  padding:52px 0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#9FBDB4;margin-bottom:14px;flex-wrap:wrap;}
.crumb a{color:#9FBDB4;}
.crumb a:hover{color:var(--c-brand);}
.crumb span.sep{opacity:.6;}
.crumb .now{color:#fff;}
.page-hero h1{
  font-size:var(--fs-h1);
  color:#fff;
  letter-spacing:.5px;
  max-width:860px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--c-brand);
}
.page-hero .lede{
  margin-top:14px;
  font-size:15.5px;
  color:#CDDED8;
  max-width:720px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.3px;
  background:rgba(255,255,255,.12);color:#E7F1EE;
  border:1px solid rgba(255,255,255,.16);
}
.tag.is-brand{background:rgba(255,106,26,.2);border-color:rgba(255,106,26,.4);color:#FFD9C2;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section.is-tight{padding:72px 0;}
.section.is-plain{background:var(--c-bg);}
.section.is-white{background:#fff;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:var(--c-brand);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.section-head .eyebrow::before{content:"";width:26px;height:2px;background:var(--c-brand);border-radius:2px;}
.section-head h2{font-size:var(--fs-h2);margin-bottom:14px;}
.section-head p{color:var(--c-ink-2);font-size:15.5px;margin:0;}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.is-center .eyebrow{justify-content:center;}

/* ---------- 说明段 ---------- */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:start;}
.intro-copy p{color:var(--c-ink-2);}
.intro-copy strong{color:var(--c-ink);font-weight:600;}
.index-card{
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);
}
.index-card h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.index-card h3 i{color:var(--c-brand);font-size:15px;}
.index-card ul li{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 0;border-bottom:1px solid var(--c-line);
  font-size:14.5px;color:var(--c-ink-2);
}
.index-card ul li:last-child{border-bottom:0;padding-bottom:0;}
.index-card ul li:first-child{padding-top:0;}
.index-card ul li i{color:var(--c-mint);font-size:13px;margin-top:6px;flex:0 0 auto;}

/* ---------- 左右交替图文 ---------- */
.qa-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px 0;border-bottom:1px solid var(--c-line);
}
.qa-row:last-of-type{border-bottom:0;padding-bottom:0;}
.qa-row:first-of-type{padding-top:0;}
.qa-row.is-reverse .qa-media{order:2;}
.qa-row.is-reverse .qa-body{order:1;}
.qa-media{position:relative;}
.qa-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.qa-media .num{
  position:absolute;left:18px;top:18px;
  display:inline-flex;align-items:center;justify-content:center;
  min-width:46px;height:30px;padding:0 12px;
  background:var(--c-deep);color:#fff;
  border-radius:var(--r-pill);
  font-size:13px;letter-spacing:1px;
  font-variant-numeric:tabular-nums;
}
.qa-body .badge-line{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:var(--c-badge-orange);color:#8A3208;
}
.badge.is-mint{background:var(--c-badge-mint);color:#0E5B43;}
.qa-body h3{font-size:var(--fs-h3);margin-bottom:14px;}
.qa-body p{color:var(--c-ink-2);font-size:15.5px;}
.qa-body .mini-list{margin:18px 0 20px;}
.qa-body .mini-list li{
  position:relative;padding-left:20px;margin-bottom:10px;
  font-size:14.5px;color:var(--c-ink-2);
}
.qa-body .mini-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:2px;background:var(--c-brand);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--c-brand);
  transition:transform .16s ease,color .16s ease;
}
.link-arrow:hover{transform:translateX(2px);color:var(--c-brand-d);}

/* ---------- 关联链接 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D5D0C6;}
.rel-card i{font-size:18px;color:var(--c-brand);}
.rel-card h3{font-size:16.5px;}
.rel-card p{font-size:14px;color:var(--c-ink-2);margin:0;flex:1 1 auto;}
.rel-card .link-arrow{font-size:14px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item.is-open{border-color:#F0C3A5;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  line-height:1.6;
}
.faq-q:hover{color:var(--c-brand-d);}
.faq-q .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-bg);color:var(--c-deep);font-size:12px;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.faq-item.is-open .faq-q .faq-icon{background:var(--c-brand);color:#fff;transform:rotate(45deg);}
.faq-a{height:0;overflow:hidden;transition:height .26s ease;}
.faq-a-inner{padding:0 22px 22px;color:var(--c-ink-2);font-size:15px;}
.faq-a-inner p{margin-bottom:.9em;}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-deep) 0%,var(--c-deep-2) 100%);
  color:#fff;text-align:center;padding:84px 0;
}
.cta-band h2{color:#fff;font-size:var(--fs-h2);margin-bottom:16px;}
.cta-band p{color:#BFD4CE;max-width:640px;margin:0 auto 30px;font-size:15.5px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.btn-primary{
  display:inline-flex;align-items:center;gap:9px;
  height:48px;padding:0 28px;
  background:var(--c-brand);color:#fff;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  box-shadow:0 8px 20px rgba(255,106,26,.28);
  transition:background .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary:hover{background:var(--c-brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,106,26,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  display:inline-flex;align-items:center;gap:9px;
  height:48px;padding:0 26px;
  background:#fff;color:var(--c-deep);
  border:1px solid var(--c-deep);
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:background .16s ease,color .16s ease,transform .16s ease;
}
.btn-outline:hover{background:var(--c-deep);color:#fff;transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:#BFD4CE;padding:72px 0 0;font-size:14.5px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;}
.footer-brand span{display:flex;flex-direction:column;line-height:1.2;}
.footer-brand b{color:#fff;font-size:15.5px;}
.footer-brand span span{font-size:12px;color:#9FBDB4;letter-spacing:2px;}
.site-footer p{color:#9FBDB4;font-size:14px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.5px;}
.footer-col ul li{padding:9px 0;border-bottom:1px solid rgba(255,255,255,.08);}
.footer-col ul li:last-child{border-bottom:0;}
.footer-col ul li a{color:#BFD4CE;font-size:14px;}
.footer-col ul li a:hover{color:var(--c-brand);}
.footer-actions{display:flex;flex-direction:column;gap:10px;align-items:flex-start;}
.footer-bottom{
  margin-top:56px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8CA8A0;
}

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

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-search{width:180px;}
  .nav-channels a{padding:10px 9px;font-size:14px;}
  .section{padding:72px 0;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .qa-row{gap:36px;padding:40px 0;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .nav-channels,.nav-search,.nav-login{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-wrap{gap:12px;justify-content:space-between;}
  .nav-tools{margin-left:auto;}
  .btn-entry{display:none;}
  .nav-tools .btn-entry{display:none;}
  .section{padding:56px 0;}
  .section.is-tight{padding:48px 0;}
  .page-hero{min-height:auto;padding:42px 0;}
  .qa-row{grid-template-columns:1fr;gap:24px;padding:34px 0;}
  .qa-row.is-reverse .qa-media{order:0;}
  .qa-row.is-reverse .qa-body{order:0;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .brand-text b{font-size:14.5px;}
  .faq-q{font-size:15px;padding:17px 18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .index-card{padding:20px;}
  .btn-primary,.btn-outline{width:100%;justify-content:center;}
  .cta-actions{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --c-brand:#FF6A1A;
  --c-brand-d:#D9500A;
  --c-deep:#0B2B26;
  --c-mint:#1FA37A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-line:#E6E3DC;
  --c-ink:#141B1A;
  --c-ink-2:#5A6564;
  --c-ink-3:#8A9291;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(11,43,38,.06),0 8px 24px rgba(11,43,38,.06);
  --sh-2:0 12px 28px rgba(11,43,38,.12);
  --ease:.18s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.9;color:var(--c-ink);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand);text-decoration:none;text-underline-offset:3px;transition:color var(--ease);}
a:hover{color:var(--c-brand-d);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--c-ink);}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35;}
h3{font-size:19px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--c-deep);transition:box-shadow var(--ease);}
.site-header.is-scrolled{box-shadow:0 10px 24px rgba(11,43,38,.3);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;transition:height var(--ease);}
.site-header.is-scrolled .nav-wrap{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;}
.brand:hover{text-decoration:none;color:#fff;}
.brand-mark{width:38px;height:38px;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:.02em;color:#fff;}
.brand-text span{font-size:11px;letter-spacing:.2em;color:#FFB27F;}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-channels a{position:relative;padding:8px 12px;font-size:14px;color:rgba(255,255,255,.82);white-space:nowrap;transition:color var(--ease);}
.nav-channels a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--c-brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.nav-channels a:hover{color:#fff;text-decoration:none;}
.nav-channels a:hover::after{transform:scaleX(1);}
.nav-channels a.is-active{color:#fff;font-weight:600;}
.nav-channels a.is-active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{display:flex;align-items:center;gap:6px;height:40px;min-width:210px;padding:0 6px 0 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:999px;}
.nav-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:#fff;font-size:13px;}
.nav-search input::placeholder{color:rgba(255,255,255,.55);}
.nav-search button{width:30px;height:30px;flex:0 0 auto;border:0;border-radius:50%;background:var(--c-brand);color:#fff;font-size:12px;transition:background var(--ease);}
.nav-search button:hover{background:var(--c-brand-d);}
.nav-login{font-size:14px;color:rgba(255,255,255,.85);padding:6px 4px;}
.nav-login:hover{color:var(--c-brand);text-decoration:none;}
.btn-entry{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 20px;border-radius:999px;background:var(--c-brand);color:#fff;font-size:14px;font-weight:600;border:0;transition:background var(--ease),transform var(--ease),box-shadow var(--ease);}
.btn-entry:hover{background:var(--c-brand-d);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-entry:active{transform:translateY(1px);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;font-size:16px;}
.nav-drawer{display:none;background:var(--c-deep);border-top:1px solid rgba(255,255,255,.1);padding:16px 0 22px;}
.nav-drawer.is-open{display:block;}
.nav-drawer .drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 8px 0 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:999px;margin-bottom:16px;}
.nav-drawer .drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:#fff;font-size:14px;}
.nav-drawer .drawer-search input::placeholder{color:rgba(255,255,255,.55);}
.nav-drawer .drawer-search button{width:32px;height:32px;border:0;border-radius:50%;background:var(--c-brand);color:#fff;}
.drawer-links{display:grid;gap:2px;margin-bottom:16px;}
.drawer-links a{padding:12px 4px;font-size:15px;color:rgba(255,255,255,.85);border-bottom:1px solid rgba(255,255,255,.08);}
.drawer-links a:hover{color:var(--c-brand);text-decoration:none;}
.drawer-links a.is-active{color:#fff;font-weight:600;border-left:3px solid var(--c-brand);padding-left:12px;}
.drawer-actions{display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- 页头带 ---------- */
.page-hero{position:relative;color:#fff;padding:56px 0 52px;background:linear-gradient(180deg,rgba(11,43,38,.93),rgba(11,43,38,.82)),url("/assets/images/backpic/back-1.png") center/cover no-repeat;}
.page-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;pointer-events:none;}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:16px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:var(--c-brand);text-decoration:none;}
.breadcrumb span.sep{color:rgba(255,255,255,.35);}
.page-hero h1{color:#fff;max-width:820px;}
.page-hero .hero-sub{margin-top:14px;max-width:760px;font-size:16px;line-height:1.85;color:#D8E6E1;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags .tag{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);font-size:12.5px;color:#EAF3F0;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--intro{padding-top:84px;}
.section--alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;color:var(--c-brand);font-weight:600;margin-bottom:12px;}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--c-brand);display:inline-block;}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--c-brand);}
.section-head p{margin-top:14px;color:var(--c-ink-2);font-size:15.5px;line-height:1.9;}
.lead-block{max-width:820px;}
.lead-block p{color:var(--c-ink-2);font-size:16px;line-height:1.95;}
.lead-block p strong{color:var(--c-ink);}

/* ---------- 图文块 ---------- */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:36px 0;}
.media-row + .media-row{border-top:1px solid var(--c-line);}
.media-row.reverse .media-fig{order:2;}
.media-fig{margin:0;}
.media-fig img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--c-line);box-shadow:var(--sh-1);}
.media-fig figcaption{margin-top:10px;font-size:13px;color:var(--c-ink-3);}
.media-body .num{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:26px;padding:0 10px;border-radius:999px;background:rgba(255,106,26,.12);color:var(--c-brand-d);font-size:13px;font-weight:700;letter-spacing:.08em;margin-bottom:14px;}
.media-body h3{margin-bottom:12px;}
.media-body p{color:var(--c-ink-2);font-size:15.5px;}
.media-body .mini-list{margin-top:16px;}
.mini-list li{position:relative;padding:10px 0 10px 24px;font-size:14.5px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);}
.mini-list li:last-child{border-bottom:0;}
.mini-list li::before{content:"";position:absolute;left:2px;top:19px;width:8px;height:8px;border-radius:2px;background:var(--c-brand);}

/* ---------- 对比清单 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:box-shadow var(--ease),transform var(--ease);}
.compare-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.compare-card.is-good{border-top:3px solid var(--c-mint);}
.compare-card.is-risk{border-top:3px solid var(--c-brand);}
.compare-card h3{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.compare-card h3 i{font-size:15px;}
.compare-card.is-good h3 i{color:var(--c-mint);}
.compare-card.is-risk h3 i{color:var(--c-brand);}
.compare-card > p{font-size:14px;color:var(--c-ink-3);margin-bottom:12px;}
.compare-list li{position:relative;padding:12px 0 12px 30px;font-size:15px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);}
.compare-list li:last-child{border-bottom:0;}
.compare-list li::before{position:absolute;left:0;top:12px;font-weight:700;font-size:14px;}
.is-good .compare-list li::before{content:"✓";color:var(--c-mint);}
.is-risk .compare-list li::before{content:"✕";color:var(--c-brand);}

/* ---------- 关联链接 ---------- */
.link-list{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.link-list li{border-bottom:1px solid var(--c-line);}
.link-list li:last-child{border-bottom:0;}
.link-list a{display:flex;align-items:center;gap:14px;padding:20px 24px;font-size:15px;color:var(--c-ink);transition:background var(--ease),padding var(--ease);}
.link-list a:hover{background:#FCFBF8;text-decoration:none;padding-left:30px;}
.link-list .idx{font-family:Inter,system-ui;font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;color:var(--c-brand);}
.link-list .txt{flex:1;min-width:0;}
.link-list .txt b{display:block;font-size:15.5px;font-weight:600;}
.link-list .txt span{display:block;font-size:13.5px;color:var(--c-ink-3);line-height:1.7;}
.link-list .arrow{color:var(--c-ink-3);transition:transform var(--ease),color var(--ease);}
.link-list a:hover .arrow{transform:translateX(3px);color:var(--c-brand);}

/* ---------- FAQ ---------- */
.faq{max-width:900px;}
.faq-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow var(--ease);}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:20px 24px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;}
.faq-q i{flex:0 0 auto;color:var(--c-brand);font-size:14px;transition:transform var(--ease);}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--c-ink-2);font-size:15px;line-height:1.9;}

/* ---------- 尾部 CTA ---------- */
.cta-band{background:var(--c-deep);color:#fff;padding:80px 0;text-align:center;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.72);max-width:600px;margin:0 auto 28px;}
.cta-band .btn-entry{height:46px;padding:0 28px;font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:36px;height:36px;}
.footer-brand span{display:flex;flex-direction:column;line-height:1.15;}
.footer-brand b{color:#fff;font-size:15px;}
.footer-brand span span{font-size:11px;letter-spacing:.2em;color:#FFB27F;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-col a:hover{color:var(--c-brand);text-decoration:none;}
.footer-actions{display:flex;flex-wrap:wrap;gap:10px;}
.btn-ghost-light{display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:999px;border:1px solid rgba(255,255,255,.35);color:#fff;font-size:14px;}
.btn-ghost-light:hover{border-color:var(--c-brand);color:var(--c-brand);text-decoration:none;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 移动端固定条 ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;gap:10px;padding:8px 16px calc(8px + env(safe-area-inset-bottom));background:rgba(255,255,255,.97);border-top:1px solid var(--c-line);backdrop-filter:blur(6px);}
.mobile-bar .btn-entry{flex:1;justify-content:center;}
.mobile-bar .btn-outline{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--c-line);color:var(--c-deep);font-size:14px;}
.mobile-bar .btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand);text-decoration:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .section--intro{padding-top:64px;}
  .media-row{gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-search{min-width:150px;}
  .nav-channels a{padding:8px 9px;font-size:13.5px;}
}
@media (max-width:900px){
  .nav-channels,.nav-search,.nav-login{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-wrap{gap:12px;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .page-hero{padding:40px 0 40px;}
  .page-hero .hero-sub{font-size:15px;}
  .media-row{grid-template-columns:1fr;gap:22px;padding:28px 0;}
  .media-row.reverse .media-fig{order:0;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-card{padding:22px;}
  .cta-band{padding:56px 0;}
  .site-footer{padding-top:52px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:70px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px;font-size:14.5px;}
  .link-list a{padding:16px 18px;gap:10px;}
  .link-list .txt span{display:none;}
  .hero-tags .tag{font-size:12px;height:28px;padding:0 12px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition:none !important;}
}