/* roulang page: index */
:root{
  --ink:#101413;
  --ink-soft:#1a1f1e;
  --bone:#F6F4EF;
  --surface:#FFFFFF;
  --lime:#C6F24E;
  --copper:#D98F2B;
  --line:#E4E0D7;
  --muted:#5A605C;
  --text:#222725;
  --r-card:12px;
  --r-img:10px;
  --r-input:8px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04),0 10px 28px -18px rgba(16,20,19,.22);
  --shadow-2:0 16px 40px -20px rgba(16,20,19,.3);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bone);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.02em;line-height:1.22;font-weight:800;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.num,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.section{padding:104px 0;}
.section-tight{padding:80px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:40px;margin-bottom:52px;
}
.section-title{font-size:clamp(26px,3vw,36px);margin:0;}
.section-desc{font-size:15px;line-height:1.8;color:var(--muted);max-width:560px;margin:0;}
.section-head .section-desc{text-align:right;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(246,244,239,.9);font-size:13px;line-height:1.4;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:36px;}
.topbar-mid{color:rgba(246,244,239,.62);}
.topbar-right{display:flex;align-items:center;gap:14px;}
.topbar-right a{color:rgba(246,244,239,.9);transition:color .2s var(--ease);}
.topbar-right a:hover{color:var(--lime);}
.topbar-right span.sep{width:1px;height:12px;background:rgba(246,244,239,.28);display:inline-block;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bone);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--lime);
  border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:var(--ink);letter-spacing:.02em;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:15px;font-weight:800;color:var(--ink);}
.brand-suffix{font-size:11px;color:var(--muted);letter-spacing:.18em;}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:600;color:var(--text);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--ink);transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{font-weight:800;color:var(--ink);}
.nav-link.is-active::after{left:0;right:0;background:var(--copper);}
.nav-actions{display:flex;align-items:center;gap:18px;}
.nav-actions .link-login{font-size:15px;font-weight:600;color:var(--text);transition:color .2s var(--ease);}
.nav-actions .link-login:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:4px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);}
.btn-on-dark{background:var(--bone);color:var(--ink);}
.btn-on-dark:hover{background:var(--lime);color:var(--ink);transform:translateY(-1px);}
.btn-outline-light{border-color:rgba(246,244,239,.55);color:var(--bone);background:transparent;}
.btn-outline-light:hover{background:var(--bone);color:var(--ink);transform:translateY(-1px);}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--ink);
  border-bottom:2px solid var(--lime);padding-bottom:2px;
}
.text-link span{transition:transform .22s var(--ease);}
.text-link:hover span{transform:translateX(3px);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);display:flex;align-items:center;min-height:640px;}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center right;
  opacity:.6;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,20,19,.94) 0%,rgba(16,20,19,.78) 40%,rgba(16,20,19,.22) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding:96px 24px 80px;}
.hero-eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.2em;
  color:var(--ink);background:var(--lime);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:26px;
}
.hero h1{
  color:var(--bone);font-size:clamp(31px,4.4vw,52px);line-height:1.16;
  max-width:760px;margin-bottom:22px;
}
.hero-sub{
  color:rgba(246,244,239,.82);font-size:17px;line-height:1.85;
  max-width:640px;margin-bottom:36px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:48px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;max-width:680px;
  border-top:1px solid rgba(246,244,239,.2);padding-top:24px;gap:0;
}
.hero-metrics li{
  flex:1 1 0;min-width:150px;padding-right:24px;margin-right:24px;
  border-right:1px solid rgba(246,244,239,.16);
  display:flex;flex-direction:column;gap:2px;
}
.hero-metrics li:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-metrics .num{font-size:28px;font-weight:700;color:var(--lime);line-height:1.2;}
.hero-metrics .lbl{font-size:13px;color:rgba(246,244,239,.7);line-height:1.6;}

/* ---------- 通用网格 ---------- */
.split{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:40px;}
.col-5{grid-column:span 5;}
.col-7{grid-column:span 7;}
.col-6{grid-column:span 6;}
.col-4{grid-column:span 4;}
.col-8{grid-column:span 8;}

/* ---------- 图片框 ---------- */
.figure{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);background:var(--ink);}
.figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;transition:transform .26s var(--ease);}
.figure:hover img{transform:scale(1.03);}
.figure-tag{
  position:absolute;left:16px;bottom:16px;
  background:var(--lime);color:var(--ink);font-size:12px;font-weight:700;
  padding:6px 14px;border-radius:var(--r-pill);letter-spacing:.04em;
}

/* ---------- 要点列表 ---------- */
.lead{font-size:17px;line-height:1.85;color:var(--muted);margin:18px 0 32px;max-width:560px;}
.point-list li{
  display:flex;gap:20px;padding:22px 0;border-top:1px solid var(--line);
}
.point-list li:last-child{border-bottom:1px solid var(--line);}
.point-no{
  font-family:ui-monospace,monospace;font-size:15px;font-weight:700;color:var(--copper);
  flex:0 0 auto;padding-top:2px;
}
.point-list h3{font-size:17px;margin-bottom:6px;font-weight:700;}
.point-list p{font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- 权益对比 ---------- */
.compare{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);overflow:hidden;box-shadow:var(--shadow-1);
}
.compare-row{
  display:grid;grid-template-columns:1.7fr repeat(4,1fr);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.compare-row:last-child{border-bottom:0;}
.compare-cell{
  padding:20px 18px;font-size:15px;display:flex;align-items:center;justify-content:center;
  border-right:1px solid var(--line);color:var(--text);
}
.compare-cell:last-child{border-right:0;}
.compare-func{justify-content:flex-start;font-weight:700;color:var(--ink);}
.compare-row-head .compare-cell{
  font-weight:800;color:var(--ink);font-size:16px;background:#FBF9F4;
  padding-top:22px;padding-bottom:22px;
}
.compare-row-head{padding-top:6px;}
.compare-cell.is-rec{
  background:var(--ink);color:var(--bone);
}
.compare-row-head .compare-cell.is-rec{background:var(--ink);color:var(--bone);}
.compare-row:not(.compare-row-head):hover .compare-cell:not(.is-rec){background:#FAF8F3;}
.rec-tag{
  display:inline-block;margin-left:8px;padding:3px 10px;border-radius:var(--r-pill);
  background:var(--copper);color:#fff;font-size:11px;font-weight:700;letter-spacing:.04em;
}
.tick{
  width:10px;height:10px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 0 4px rgba(198,242,78,.3);display:inline-block;
}
.compare-cell.is-rec .tick{box-shadow:0 0 0 4px rgba(198,242,78,.28);}
.dash{width:16px;height:2px;border-radius:2px;background:#C8C4BA;display:inline-block;}
.qty{font-family:ui-monospace,monospace;font-weight:700;font-size:15px;}
.compare-cards{display:none;}

/* ---------- 深色板块 ---------- */
.band-dark{background:var(--ink);color:rgba(246,244,239,.88);padding:104px 0;}
.band-dark .section-title{color:var(--bone);}
.band-dark .section-desc{color:rgba(246,244,239,.7);}
.level-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;align-items:start;}
.level-card{
  position:relative;background:rgba(246,244,239,.04);
  border:1px solid rgba(246,244,239,.14);border-radius:var(--r-card);
  padding:28px 24px 24px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.level-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--lime);
  opacity:0;transition:opacity .24s var(--ease);border-radius:var(--r-card) var(--r-card) 0 0;
}
.level-card:hover{transform:translateY(-2px);background:rgba(246,244,239,.07);}
.level-card:hover::before{opacity:1;}
.level-no{
  font-family:ui-monospace,monospace;font-size:30px;font-weight:700;
  color:rgba(246,244,239,.28);display:block;margin-bottom:16px;line-height:1;
}
.level-name{
  font-size:20px;color:var(--bone);padding-left:14px;border-left:3px solid var(--lime);
  margin-bottom:10px;
}
.level-anchor{font-size:13px;color:rgba(246,244,239,.6);padding-left:17px;margin-bottom:22px;}
.level-feats{margin-bottom:26px;}
.level-feats li{
  font-size:14px;line-height:1.7;color:rgba(246,244,239,.78);
  padding:9px 0 9px 18px;position:relative;border-bottom:1px solid rgba(246,244,239,.1);
}
.level-feats li:last-child{border-bottom:0;}
.level-feats li::before{
  content:"";position:absolute;left:0;top:17px;width:6px;height:6px;border-radius:50%;
  background:var(--lime);
}
.level-card .btn{width:100%;}
.level-price{
  font-family:ui-monospace,monospace;font-size:15px;color:var(--copper);
  font-weight:700;margin-bottom:16px;display:block;
}

/* ---------- 专题内容 ---------- */
.feature-post{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);height:100%;
}
.feature-post:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.feature-post-media{overflow:hidden;background:var(--ink);}
.feature-post-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .26s var(--ease);}
.feature-post:hover .feature-post-media img{transform:scale(1.03);}
.feature-post-body{padding:26px 28px 30px;}
.badge{
  display:inline-block;padding:5px 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:12px;font-weight:700;color:var(--muted);
  background:#FBF9F4;margin-bottom:14px;letter-spacing:.03em;
}
.badge-copper{border-color:rgba(217,143,43,.5);color:var(--copper);background:rgba(217,143,43,.08);}
.feature-post h3{font-size:23px;line-height:1.4;margin-bottom:14px;}
.feature-post p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:18px;}
.meta{font-size:13px;color:var(--muted);letter-spacing:.02em;}
.side-list li + li{border-top:1px solid var(--line);}
.side-item{display:block;padding:22px 4px;transition:padding .22s var(--ease);}
.side-item:hover{padding-left:10px;}
.side-item h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px;transition:color .2s var(--ease);}
.side-item:hover h3{color:#6d8f12;}
.side-item .badge{margin-bottom:10px;}

/* ---------- 最新信息 ---------- */
.latest-layout{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:28px;}
.post-hero{
  grid-column:span 6;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.post-hero:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.post-hero-media{overflow:hidden;background:var(--ink);}
.post-hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .26s var(--ease);}
.post-hero:hover .post-hero-media img{transform:scale(1.03);}
.post-hero-body{padding:26px 28px 30px;display:flex;flex-direction:column;gap:12px;}
.post-hero-body h3{font-size:22px;line-height:1.42;}
.post-hero-body p{font-size:15px;color:var(--muted);line-height:1.8;}
.post-grid{
  grid-column:span 6;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;align-content:start;
}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:box-shadow .24s var(--ease),transform .24s var(--ease);
  height:100%;
}
.post-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.post-card-media{overflow:hidden;background:var(--ink);}
.post-card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .26s var(--ease);}
.post-card:hover .post-card-media img{transform:scale(1.03);}
.post-card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card-body h3{
  font-size:17px;line-height:1.5;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card-body p{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card-body .meta{margin-top:auto;}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--surface);
  padding:56px 24px;text-align:center;
}
.empty-shape{
  width:76px;height:56px;margin:0 auto 20px;border-radius:10px;
  background:var(--ink);position:relative;overflow:hidden;
}
.empty-shape::before{
  content:"";position:absolute;left:14px;top:14px;width:22px;height:22px;
  border:2px solid var(--lime);border-radius:6px;
}
.empty-shape::after{
  content:"";position:absolute;right:14px;bottom:14px;width:26px;height:2px;background:var(--lime);
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px 32px;box-shadow:var(--shadow-1);position:relative;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.step-no{
  font-family:ui-monospace,monospace;font-size:34px;font-weight:700;
  color:var(--copper);display:block;line-height:1;margin-bottom:18px;
}
.step h3{font-size:19px;margin-bottom:12px;}
.step p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-side{position:sticky;top:106px;}
.faq-accordion{border:0;background:transparent;}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .2s var(--ease);
}
.faq-accordion .accordion-item.is-active{border-color:#CFCBBF;}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:17px;font-weight:700;color:var(--ink);
  padding:20px 24px;border:0;background:transparent;line-height:1.6;
  transition:background .2s var(--ease);
}
.faq-accordion .accordion-title:hover{background:#FBF9F4;}
.faq-accordion .accordion-title::before{
  content:"";order:2;flex:0 0 auto;
  width:10px;height:10px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(45deg);margin-right:4px;
  transition:transform .24s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{transform:rotate(-135deg);}
.faq-accordion .accordion-content{
  border:0;background:transparent;padding:0 24px 22px;
  font-size:15px;line-height:1.85;color:var(--muted);
  border-left:3px solid transparent;
}
.faq-accordion .accordion-item.is-active .accordion-content{
  border-left-color:var(--lime);
  transition:border-color .24s var(--ease);
}
.faq-accordion .accordion-content p{margin:0;}

/* ---------- CTA ---------- */
.cta-band{padding:88px 0 76px;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-title{color:var(--bone);font-size:clamp(26px,3vw,36px);margin-bottom:14px;}
.cta-sub{color:rgba(246,244,239,.72);font-size:16px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-trust{
  display:flex;flex-wrap:wrap;gap:34px;margin-top:44px;padding-top:26px;
  border-top:1px solid rgba(246,244,239,.16);
}
.cta-trust li{
  font-size:13px;color:rgba(246,244,239,.7);display:flex;align-items:center;gap:9px;
}
.cta-trust li::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);flex:0 0 auto;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.88);padding:76px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:56px;
}
.footer-logo{
  display:inline-block;font-size:17px;font-weight:800;color:var(--bone);margin-bottom:14px;
}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(246,244,239,.66);max-width:280px;}
.footer-col h3{
  font-size:13px;font-weight:700;color:rgba(246,244,239,.6);
  letter-spacing:.14em;margin-bottom:18px;
}
.footer-col li{margin-bottom:12px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(246,244,239,.84);transition:color .2s var(--ease);line-height:1.7;}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  border-top:1px solid rgba(246,244,239,.14);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0 28px;font-size:13px;color:rgba(246,244,239,.6);flex-wrap:wrap;
}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);align-items:center;justify-content:center;flex-direction:column;gap:5px;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  position:fixed;inset:0;z-index:75;background:var(--bone);
  padding:96px 24px 32px;display:none;flex-direction:column;
}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer nav a{
  display:block;font-size:18px;font-weight:700;color:var(--ink);
  line-height:56px;border-bottom:1px solid var(--line);
}
.mobile-drawer nav a:last-child{border-bottom:0;}
.mobile-drawer .drawer-cta{margin-top:auto;padding-top:28px;}
.mobile-drawer .drawer-cta .btn{width:100%;}
body.drawer-open{overflow:hidden;}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .34s var(--ease),transform .34s var(--ease);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions .link-login{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .level-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .col-5,.col-7,.col-6,.col-4,.col-8{grid-column:span 12;}
  .post-hero{grid-column:span 12;}
  .post-grid{grid-column:span 12;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .faq-side{position:static;}
  .section-head .section-desc{text-align:left;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .band-dark{padding:64px 0;}
  .topbar-mid{display:none;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px;}
  .hero{min-height:520px;}
  .hero-inner{padding:72px 20px 56px;}
  .hero-metrics li{flex:1 1 100%;border-right:0;padding-right:0;margin-right:0;padding-bottom:16px;border-bottom:1px solid rgba(246,244,239,.14);}
  .hero-metrics li:last-child{border-bottom:0;padding-bottom:0;}
  .split{gap:28px;}
  .compare-table{display:none;}
  .compare{border:0;background:transparent;box-shadow:none;}
  .compare-cards{display:grid;gap:18px;}
  .plan-card-mini{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px 22px;box-shadow:var(--shadow-1);
  }
  .plan-card-mini h3{font-size:18px;margin-bottom:6px;}
  .plan-card-mini .badge{margin-bottom:14px;}
  .plan-card-mini li{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);
  }
  .plan-card-mini li:last-child{border-bottom:0;}
  .plan-card-mini li b{color:var(--ink);font-weight:600;}
  .level-grid{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-trust{gap:16px;flex-direction:column;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .feature-post h3{font-size:20px;}
}
@media (max-width:520px){
  .hero h1{font-size:30px;}
  .btn{height:46px;padding:0 22px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;}
  .reveal{opacity:1;transform:none;}
  .figure:hover img,.feature-post:hover .feature-post-media img,.post-hero:hover .post-hero-media img,.post-card:hover .post-card-media img{transform:none;}
  .level-card:hover,.step:hover,.feature-post:hover,.post-hero:hover,.post-card:hover{transform:none;}
}

/* roulang page: article */
:root{
  --ink:#101413;
  --bone:#F6F4EF;
  --surface:#FFFFFF;
  --lime:#C6F24E;
  --copper:#D98F2B;
  --line:#E4E0D7;
  --muted:#5A605C;
  --text:#222725;
  --radius-card:12px;
  --radius-img:10px;
  --radius-input:8px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04), 0 10px 28px -18px rgba(16,20,19,.22);
  --shadow-2:0 16px 40px -20px rgba(16,20,19,.3);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bone);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font);color:var(--ink);margin:0;letter-spacing:-0.02em}
h1{font-size:clamp(30px,4.4vw,44px);font-weight:800;line-height:1.2}
h2{font-size:26px;font-weight:700;line-height:1.3}
h3{font-size:20px;font-weight:700;line-height:1.35}
p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:12px;top:12px}
.foundation-badge-reset{display:inline-block}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--ink);color:rgba(255,255,255,.9);font-size:13px;line-height:1.6}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-domain{font-family:var(--mono);letter-spacing:.02em;color:rgba(255,255,255,.72)}
.topbar-note{color:rgba(255,255,255,.88)}
.topbar-actions{display:flex;align-items:center}
.topbar-actions a{padding:0 12px;color:rgba(255,255,255,.9);transition:color .2s var(--ease)}
.topbar-actions a:first-child{padding-left:0}
.topbar-actions a:hover{color:var(--lime)}
.topbar-actions a + a{border-left:1px solid rgba(255,255,255,.24)}

/* ===== 主导航 ===== */
.site-header{position:sticky;top:0;z-index:120;background:var(--bone);border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{height:72px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;flex:0 0 auto;display:block}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-0.01em;white-space:nowrap}
.brand-suffix{display:inline-block;margin-left:6px;padding:1px 8px;border:1px solid var(--line);border-radius:999px;font-size:11px;font-weight:600;color:var(--muted);vertical-align:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-link{position:relative;padding:8px 12px;font-size:15px;font-weight:600;color:var(--text);white-space:nowrap;transition:color .2s var(--ease)}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--lime);transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.text-link{font-size:15px;font-weight:600;color:var(--muted);transition:color .2s var(--ease)}
.text-link:hover{color:var(--ink)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-input);background:var(--surface);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .24s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ===== 移动抽屉 ===== */
.drawer{position:fixed;inset:0;z-index:150;visibility:hidden;pointer-events:none}
.drawer::before{content:"";position:absolute;inset:0;background:rgba(16,20,19,.6);opacity:0;transition:opacity .24s var(--ease)}
.drawer-panel{position:absolute;top:0;right:0;width:min(360px,88vw);height:100%;background:var(--bone);border-left:1px solid var(--line);display:flex;flex-direction:column;transform:translateX(101%);transition:transform .3s var(--ease)}
.drawer-open .drawer{visibility:visible;pointer-events:auto}
.drawer-open .drawer::before{opacity:1}
.drawer-open .drawer-panel{transform:translateX(0)}
.drawer-open{overflow:hidden}
.drawer-head{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink)}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-input);background:var(--surface);font-size:18px;line-height:1;color:var(--ink)}
.drawer-nav{flex:1 1 auto;overflow-y:auto;padding:8px 0}
.drawer-nav a{display:block;padding:0 20px;height:56px;line-height:56px;font-size:18px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-nav a:hover{background:rgba(198,242,78,.22)}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:700;border:1px solid transparent;transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
.btn-primary{background:var(--lime);color:var(--ink)}
.btn-primary:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px)}
.btn-light{background:var(--bone);color:var(--ink)}
.btn-light:hover{background:var(--lime);color:var(--ink);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(246,244,239,.6);color:var(--bone)}
.btn-outline-light:hover{background:var(--bone);color:var(--ink);transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--ink)}
.arrow-link .arw{transition:transform .2s var(--ease)}
.arrow-link:hover .arw{transform:translateX(3px)}

/* ===== 面包屑 ===== */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:var(--muted)}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{color:#C9C4B8}
.crumb .current{color:var(--ink);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== 文章头 ===== */
.article-hero{padding:40px 0 32px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(246,244,239,0))}
.article-title{max-width:860px;margin-top:20px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:13px;color:var(--muted)}
.article-meta .divider{width:1px;height:14px;background:var(--line)}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.01em;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.badge-cat{background:var(--ink);border-color:var(--ink);color:var(--bone)}
.badge-hot{border-color:var(--copper);color:var(--copper);background:transparent}
.meta-right{margin-left:auto}

/* ===== 阅读区 ===== */
.article-section{padding:56px 0 80px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;align-items:start}
.article-content{max-width:780px;font-size:17px;line-height:1.85;color:var(--text)}
.article-content > * + *{margin-top:18px}
.article-content h2{font-size:26px;font-weight:700;margin-top:56px;scroll-margin-top:140px}
.article-content h3{font-size:20px;font-weight:700;margin-top:36px;scroll-margin-top:140px}
.article-content h4{font-size:17px;font-weight:700;margin-top:28px}
.article-content p{font-size:17px;line-height:1.85}
.article-content a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:3px}
.article-content a:hover{text-decoration-color:var(--ink)}
.article-content ul,.article-content ol{margin-top:16px;padding-left:0}
.article-content ul li,.article-content ol li{position:relative;padding-left:24px;margin-top:10px;font-size:17px;line-height:1.85}
.article-content ul li::before{content:"";position:absolute;left:4px;top:13px;width:8px;height:8px;border-radius:50%;background:var(--lime)}
.article-content ol{counter-reset:li}
.article-content ol li{counter-increment:li;padding-left:32px}
.article-content ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--mono);font-size:13px;font-weight:700;color:var(--copper);letter-spacing:.02em}
.article-content blockquote{margin:24px 0;padding:20px 22px;background:#EFEDE6;border-left:3px solid var(--lime);border-radius:0 var(--radius-card) var(--radius-card) 0;color:var(--ink);font-size:16px}
.article-content img{border-radius:var(--radius-img);margin:24px auto;box-shadow:var(--shadow-1)}
.article-content figure{margin:24px 0}
.article-content figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left;white-space:nowrap}
.article-content th{background:#EFEDE6;color:var(--ink);font-weight:700}
.article-content code{font-family:var(--mono);font-size:14px;background:#EFEDE6;padding:2px 6px;border-radius:6px}
.article-content hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.article-content strong{color:var(--ink)}

.article-empty{max-width:780px;padding:56px 28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);text-align:left}
.article-empty .empty-mark{width:64px;height:64px;border:2px solid var(--lime);border-radius:14px;margin-bottom:20px}
.article-empty .empty-title{font-size:22px;font-weight:700;color:var(--ink)}
.article-empty .empty-desc{margin-top:10px;color:var(--muted);font-size:15px}
.article-empty .btn{margin-top:24px}

/* ===== 目录 ===== */
.toc-col{display:none}
.toc{position:sticky;top:132px;border-left:1px solid var(--line);padding-left:18px}
.toc-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:14px}
.toc-list li{margin-bottom:2px}
.toc-list a{display:block;padding:6px 10px;font-size:14px;line-height:1.6;color:var(--muted);border-left:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
.toc-list a:hover{color:var(--ink);background:rgba(198,242,78,.14)}
.toc-list a.is-current{color:var(--ink);font-weight:700;border-left-color:var(--lime);background:rgba(198,242,78,.18)}
.toc-empty{font-size:13px;color:var(--muted)}

/* ===== 相关推荐 ===== */
.related{padding:0 0 80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.rel-grid{display:grid;grid-template-columns:1fr;gap:24px}
.rel-card{display:grid;grid-template-columns:1fr;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .26s var(--ease),transform .26s var(--ease)}
.rel-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rel-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--ink)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.03)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px}
.rel-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover .rel-body h3{color:#1B221E}
.rel-body .rel-desc{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);font-family:var(--mono)}

/* ===== 返回条 ===== */
.back-strip{background:#EFEDE6;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.back-strip-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:22px 0}
.back-strip-links{display:flex;flex-wrap:wrap;gap:14px 28px}

/* ===== CTA 条 ===== */
.cta-band{background:var(--ink);color:rgba(246,244,239,.88);margin-top:0}
.cta-inner{display:grid;grid-template-columns:1fr;gap:28px;padding:72px 0 40px;align-items:center}
.cta-inner h2{color:var(--bone);font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.25;letter-spacing:-0.02em}
.cta-inner .cta-sub{margin-top:12px;font-size:15px;color:rgba(246,244,239,.72);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-trust{display:flex;flex-wrap:wrap;gap:12px 32px;padding:0 0 40px;border-top:1px solid rgba(246,244,239,.16);margin-top:8px;padding-top:24px;font-size:13px;color:rgba(246,244,239,.7)}
.cta-trust span{display:inline-flex;align-items:center;gap:8px}
.cta-trust i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:inline-block}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:rgba(246,244,239,.88);padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:48px}
.footer-logo{display:inline-block;font-size:18px;font-weight:800;color:var(--bone);letter-spacing:-0.01em;margin-bottom:12px}
.footer-brand p{color:rgba(246,244,239,.7);font-size:14px;line-height:1.8;max-width:320px}
.footer-col h3{font-size:14px;font-weight:700;color:var(--bone);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li + li{margin-top:10px}
.footer-col a,.footer-col span{color:rgba(246,244,239,.72);font-size:14px;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid rgba(246,244,239,.16);padding:22px 0 28px;font-size:13px;color:rgba(246,244,239,.6)}
.footer-bottom span:last-child{font-family:var(--mono);letter-spacing:.02em}

/* ===== 进入视口动效 ===== */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .32s var(--ease),transform .32s var(--ease)}

/* ===== 断点 ===== */
@media (min-width:768px){
  .container{padding:0 24px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1.4fr .9fr;gap:40px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}
}
@media (min-width:1024px){
  .rel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:48px}
  .article-hero{padding:52px 0 40px}
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,780px) 240px;gap:56px}
  .toc-col{display:block}
  .rel-grid{gap:28px}
}
@media (max-width:1024px){
  .nav-links,.header-actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-inner{gap:16px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:16px}
  h1{font-size:clamp(24px,7vw,30px)}
  .topbar-note{display:none}
  .article-hero{padding:28px 0 24px}
  .article-section{padding:40px 0 56px}
  .article-content,.article-content p,.article-content ul li,.article-content ol li{font-size:16px}
  .article-content h2{font-size:22px;margin-top:40px}
  .article-content h3{font-size:18px;margin-top:28px}
  .cta-inner{padding:56px 0 28px}
  .cta-trust{padding-top:20px;padding-bottom:32px}
  .site-footer{padding-top:56px}
  .meta-right{margin-left:0;width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .brand-suffix{display:none}
  .btn{height:46px;padding:0 22px;width:100%}
  .cta-actions .btn{width:100%}
  .back-strip-links{gap:12px 20px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#101413;
  --bone:#F6F4EF;
  --card:#FFFFFF;
  --lime:#C6F24E;
  --copper:#D98F2B;
  --line:#E4E0D7;
  --muted:#5A605C;
  --text:#222725;
  --radius-card:12px;
  --radius-img:10px;
  --radius-input:8px;
  --radius-pill:999px;
  --shadow-base:0 1px 2px rgba(16,20,19,.04),0 10px 28px -18px rgba(16,20,19,.22);
  --shadow-hover:0 16px 40px -20px rgba(16,20,19,.3);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --nav-h:72px;
  --topbar-h:36px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bone);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
hr{border:0;border-top:1px solid var(--line);}
.num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

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

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(246,244,239,.9);font-size:13px;line-height:var(--topbar-h);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-domain{letter-spacing:.02em;color:rgba(246,244,239,.72);}
.topbar-note{color:rgba(246,244,239,.72);}
.topbar-actions{display:flex;align-items:center;gap:12px;}
.topbar-actions a{color:var(--lime);font-weight:600;}
.topbar-actions a:hover{color:#fff;}
.topbar-sep{width:1px;height:12px;background:rgba(246,244,239,.28);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bone);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-base);}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:8px;
  border:2px solid var(--lime);
  position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:6px;width:14px;height:14px;
  background:var(--lime);border-radius:3px;
}
.brand-text{display:flex;align-items:baseline;gap:6px;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:var(--radius-pill);padding:1px 8px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-link{
  position:relative;
  font-size:15.5px;font-weight:600;color:var(--text);
  padding:6px 0;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:-1px;height:2px;
  background:var(--lime);
  transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover::after,.nav-link.is-active::after{left:0;right:0;}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{font-weight:800;color:var(--ink);}
.header-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.link-arrow{font-size:15px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:4px;}
.link-arrow::after{content:"→";font-size:15px;transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--ink);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;border-radius:var(--radius-pill);
  font-size:15.5px;font-weight:700;line-height:1;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  border:1px solid transparent;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);}
.btn-light{background:var(--bone);color:var(--ink);}
.btn-light:hover{background:var(--lime);color:var(--ink);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;color:var(--bone);border-color:rgba(246,244,239,.5);}
.btn-ghost-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px;}

/* ---------- 汉堡按钮 ---------- */
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--radius-input);
  border:1px solid var(--line);
  align-items:center;justify-content:center;
  margin-left:auto;
  background:var(--card);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--bone);
  display:none;
  flex-direction:column;
  padding:20px 24px 32px;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--card);font-size:20px;line-height:1;color:var(--ink);
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:18px;line-height:56px;font-weight:600;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a.is-active{color:var(--ink);font-weight:800;}
.drawer-nav a.is-active::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);}
.drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:12px;}
.drawer-foot .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:rgba(90,96,92,.5);}
.breadcrumb .current{color:rgba(246,244,239,.85);}
.breadcrumb.on-light .current{color:var(--ink);font-weight:600;}

/* ---------- 分类一：窄幅 Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--ink);display:flex;align-items:flex-end;min-height:390px;}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,20,19,.88) 0%,rgba(16,20,19,.68) 46%,rgba(16,20,19,.28) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:56px;color:var(--bone);}
.cat-hero h1{
  font-size:clamp(30px,4vw,50px);
  font-weight:800;letter-spacing:-.02em;line-height:1.18;
  max-width:760px;color:#FBF9F5;
}
.cat-hero .hero-sub{
  margin-top:18px;max-width:640px;
  font-size:16.5px;line-height:1.75;color:rgba(246,244,239,.82);
}
.badge{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:var(--radius-pill);border:1px solid rgba(246,244,239,.35);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;color:var(--lime);
  margin-bottom:20px;
}
.badge.on-light{border-color:var(--line);color:var(--muted);background:var(--card);}
.badge.copper{border-color:rgba(217,143,43,.4);color:var(--copper);background:rgba(217,143,43,.08);}

/* ---------- 锚点索引条 ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:50;
  background:var(--card);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;gap:28px;align-items:center;
  height:56px;overflow-x:auto;scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  font-size:14.5px;font-weight:600;color:var(--muted);
  white-space:nowrap;position:relative;padding:6px 0;
}
.anchor-inner a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;transition:background-color .2s var(--ease);}
.anchor-inner a:hover{color:var(--ink);}
.anchor-inner a:hover::after{background:var(--lime);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section.tight{padding:64px 0;}
.section.dark{background:var(--ink);color:var(--bone);}
.section.alt{background:#F1EEE7;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--ink);
  max-width:720px;
}
.section-head p{font-size:14.5px;color:var(--muted);max-width:360px;}
.section.dark .section-head h2{color:#FBF9F5;}
.section.dark .section-head p{color:rgba(246,244,239,.7);}
.lead{font-size:17px;line-height:1.85;color:var(--text);max-width:640px;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--muted);text-transform:uppercase;margin-bottom:12px;
}

/* ---------- 分栏（左文右图） ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.split.reverse .split-media{order:-1;}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-base);}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-text h2{
  font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.28;color:var(--ink);
  margin-bottom:18px;
}
.split-text p{font-size:16.5px;line-height:1.85;color:var(--text);margin-bottom:16px;}
.check-list{margin-top:8px;}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;
  font-size:15.5px;line-height:1.75;color:var(--text);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:12px;height:12px;border-radius:50%;background:var(--lime);
}

/* ---------- 卡片组 ---------- */
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
.grid-margin-y{margin-top:-12px;}
.grid-margin-y > .cell{padding-top:12px;padding-bottom:12px;}
.info-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;height:100%;
  box-shadow:var(--shadow-base);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#DAD5C8;}
.info-card .cap{font-size:13px;color:var(--muted);margin-bottom:10px;}
.info-card .value{font-size:28px;font-weight:700;color:var(--ink);line-height:1.2;}
.info-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.info-card p{font-size:15px;line-height:1.75;color:var(--muted);}
.copper-num{color:var(--copper);}

/* ---------- 步骤区 ---------- */
.steps{counter-reset:step;border-top:1px solid var(--line);}
.step-item{
  display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:28px 0;border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
.step-item:hover{background:rgba(198,242,78,.08);}
.step-no{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:24px;font-weight:700;color:var(--ink);
  padding-left:16px;position:relative;
}
.step-no::before{content:"";position:absolute;left:0;top:6px;width:3px;height:24px;background:var(--lime);}
.step-body h3{font-size:18.5px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.step-body p{font-size:15.5px;line-height:1.8;color:var(--muted);max-width:760px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;}
.faq-accordion{border:0;background:transparent;}
.faq-accordion .accordion-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:#DAD5C8;box-shadow:var(--shadow-base);}
.faq-accordion .accordion-item.is-active{border-left:3px solid var(--lime);}
.faq-accordion .accordion-title{
  position:relative;
  padding:22px 62px 22px 24px;
  font-size:17px;font-weight:700;color:var(--ink);
  border:0;background:transparent;line-height:1.6;
}
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus{background:transparent;}
.faq-accordion .accordion-title::before{
  content:"";position:absolute;right:26px;top:50%;
  width:9px;height:9px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .24s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  transform:translateY(-30%) rotate(-135deg);
}
.faq-accordion .accordion-content{
  padding:0 24px 22px;
  border:0;background:transparent;
  font-size:15px;line-height:1.8;color:var(--muted);
}
.faq-accordion .accordion-content p{margin:0 0 8px;}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}

/* ---------- 互链卡片 ---------- */
.link-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  box-shadow:var(--shadow-base);
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#DAD5C8;}
.link-card h3{font-size:19px;font-weight:700;color:var(--ink);}
.link-card p{font-size:15px;line-height:1.75;color:var(--muted);}
.link-card .link-arrow{margin-top:auto;color:var(--ink);}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink);color:var(--bone);padding:72px 0 64px;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-copy h2{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.28;color:#FBF9F5;max-width:620px;}
.cta-copy p{margin-top:12px;font-size:16px;color:rgba(246,244,239,.74);}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.trust-row{display:flex;gap:32px;flex-wrap:wrap;margin-top:40px;padding-top:24px;border-top:1px solid rgba(246,244,239,.16);}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(246,244,239,.7);}
.trust-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.88);padding:72px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(246,244,239,.16);
}
.footer-brand .footer-logo{font-size:18px;font-weight:800;color:#FBF9F5;display:block;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(246,244,239,.66);max-width:320px;}
.footer-col h3{font-size:13.5px;font-weight:700;color:rgba(246,244,239,.6);letter-spacing:.08em;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(246,244,239,.86);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:rgba(246,244,239,.6);}

/* ---------- 入场动效 ---------- */
body.js-anim .reveal{opacity:0;transform:translateY(12px);}
body.js-anim .reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  body.js-anim .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 断点 ---------- */
@media (max-width:1024px){
  .nav-links,.header-actions{display:none;}
  .nav-toggle{display:flex;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split.reverse .split-media{order:0;}
  .footer-grid{grid-template-columns:2fr 1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .topbar-note{display:none;}
  .cat-hero{min-height:330px;}
  .cat-hero-inner{padding-top:56px;padding-bottom:40px;}
  .anchor-bar{top:var(--nav-h);}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .step-item{grid-template-columns:56px 1fr;gap:16px;}
  .step-no{font-size:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .section-head p{max-width:100%;}
}
@media (max-width:640px){
  .info-card{padding:22px;}
  .link-card{padding:22px;}
}
@media (max-width:520px){
  .brand-text em{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .trust-row{gap:18px;}
  .step-item{grid-template-columns:1fr;gap:6px;}
  .step-no{padding-left:14px;margin-bottom:6px;}
}

/* roulang page: category2 */
:root{
  --ink:#101413;
  --bone:#F6F4EF;
  --surface:#FFFFFF;
  --accent:#C6F24E;
  --copper:#D98F2B;
  --line:#E4E0D7;
  --muted:#5A605C;
  --text:#222725;
  --r-pill:999px;
  --r-card:12px;
  --r-img:10px;
  --r-input:8px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04),0 10px 28px -18px rgba(16,20,19,.22);
  --shadow-2:0 16px 40px -20px rgba(16,20,19,.3);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bone);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.02em;line-height:1.2;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部信息条 ---------- */
.top-bar-info{
  background:var(--ink);
  color:#EDEAE2;
  font-size:13px;
  line-height:1.6;
}
.top-bar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
  padding-top:6px;
  padding-bottom:6px;
}
.top-note{
  color:rgba(246,244,239,.72);
}
.top-actions{
  display:flex;
  align-items:center;
  gap:12px;
  white-space:nowrap;
}
.top-actions a{color:#EDEAE2;transition:color .2s var(--ease);}
.top-actions a:hover{color:var(--accent);}
.top-sep{width:1px;height:12px;background:rgba(246,244,239,.3);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bone);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(16,20,19,.35);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:30px;height:30px;
  border:2px solid var(--ink);
  border-radius:9px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  position:relative;
  background:var(--accent);
}
.brand-mark::after{
  content:"";
  width:10px;height:10px;
  border:2px solid var(--ink);
  border-radius:3px;
}
.brand-text{
  font-weight:800;
  font-size:18px;
  color:var(--ink);
  letter-spacing:-.02em;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.brand-sub{
  font-size:12px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.06em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:16px;
  flex:0 0 auto;
}
.text-link{
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid transparent;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.text-link:hover{border-color:var(--accent);}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.menu-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 28px;
  border-radius:var(--r-pill);
  font-size:16px;
  font-weight:700;
  border:1px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);}
.btn-light{background:var(--bone);color:var(--ink);}
.btn-light:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
}
.link-arrow .arrow{transition:transform .2s var(--ease);display:inline-block;}
.link-arrow:hover .arrow{transform:translateX(3px);}
.link-arrow:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:var(--line);}

/* ---------- 大字标题区 ---------- */
.page-hero{
  padding-bottom:8px;
}
.hero-block{
  padding:34px 0 0;
  max-width:900px;
}
.hero-block h1{
  font-size:56px;
  font-weight:800;
  line-height:1.14;
  border-left:4px solid var(--accent);
  padding-left:24px;
  margin-left:-28px;
  max-width:840px;
}
.hero-sub{
  margin-top:22px;
  font-size:18px;
  line-height:1.85;
  color:var(--muted);
  max-width:640px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:44px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat-item{
  padding:22px 24px 22px 0;
  border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:0;padding-right:0;}
.stat-num{
  display:block;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:28px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.stat-label{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 通用板块 ---------- */
.section{
  padding:96px 0 0;
}
.section:last-of-type{padding-bottom:0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:36px;
}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head h2{
  font-size:32px;
  font-weight:800;
}
.section-head p{
  font-size:15px;
  color:var(--muted);
  max-width:520px;
}

/* ---------- 横向滚动卡片带 ---------- */
.rail-wrap{
  position:relative;
  margin:0 -24px;
  padding:0 24px;
}
.rail-track{
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 0 22px;
  scrollbar-width:thin;
  scrollbar-color:var(--line) transparent;
}
.rail-track::-webkit-scrollbar{height:6px;}
.rail-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px;}
.rail-card{
  flex:0 0 320px;
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  gap:14px;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.rail-card.is-featured{border-color:var(--ink);}
.rail-index{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:15px;
  font-weight:700;
  color:var(--copper);
  letter-spacing:.06em;
}
.rail-card h3{
  font-size:21px;
  font-weight:800;
}
.rail-price{
  font-size:14px;
  color:var(--muted);
}
.rail-list{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:2px;
}
.rail-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.7;
  color:var(--text);
}
.rail-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
}
.rail-card .link-arrow{margin-top:auto;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:12px;
  font-weight:700;
  color:var(--muted);
  background:var(--bone);
  align-self:flex-start;
}
.badge-copper{
  border-color:rgba(217,143,43,.4);
  color:#8A5A12;
  background:rgba(217,143,43,.12);
}

/* ---------- 交错图文 ---------- */
.stagger-row{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
  padding:32px 0;
}
.stagger-row.is-reverse{grid-template-columns:7fr 5fr;}
.stagger-row.is-reverse .stagger-media{order:2;}
.stagger-row.is-reverse .stagger-copy{order:1;}
.stagger-media{
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--ink);
  box-shadow:var(--shadow-1);
}
.stagger-media img{
  width:100%;
  height:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  transition:transform .26s var(--ease);
}
.stagger-media:hover img{transform:scale(1.03);}
.stagger-copy h2{
  font-size:30px;
  font-weight:800;
  margin-bottom:16px;
}
.stagger-copy p{
  color:var(--muted);
  max-width:560px;
}
.tick-list{
  margin-top:20px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.tick-list li{
  position:relative;
  padding-left:26px;
  font-size:15.5px;
  line-height:1.75;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:12px;height:12px;
  border-radius:4px;
  border:2px solid var(--ink);
  background:var(--accent);
}
.divider-line{
  height:1px;
  background:var(--line);
  margin:24px 0;
}

/* ---------- 权益清单 ---------- */
.benefit-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.benefit-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.benefit-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.benefit-card h3{
  font-size:19px;
  font-weight:800;
  padding-left:14px;
  border-left:3px solid var(--accent);
  margin-bottom:16px;
}
.benefit-card ul{display:flex;flex-direction:column;gap:12px;}
.benefit-card li{
  font-size:15px;
  line-height:1.7;
  padding-bottom:12px;
  border-bottom:1px dashed var(--line);
  color:var(--text);
}
.benefit-card li:last-child{border-bottom:0;padding-bottom:0;}
.benefit-card li span{display:block;font-size:13px;color:var(--muted);margin-top:2px;}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:48px;
  align-items:start;
}
.faq-intro h2{font-size:30px;font-weight:800;margin-bottom:14px;}
.faq-intro p{color:var(--muted);font-size:15px;}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  text-align:left;
  padding:22px 0 22px 16px;
  border-left:3px solid transparent;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.faq-q:hover{border-left-color:var(--line);}
.faq-item.is-open .faq-q{border-left-color:var(--accent);}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  transition:transform .24s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--ink);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{
  overflow:hidden;
  max-height:0;
  transition:max-height .24s var(--ease);
}
.faq-a-inner{
  padding:0 16px 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  max-width:720px;
}

/* ---------- 同类分类互链 ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  gap:12px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.related-card h3{font-size:18px;font-weight:800;}
.related-card p{font-size:14.5px;color:var(--muted);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);
  color:rgba(246,244,239,.88);
  margin-top:96px;
  padding:72px 0 56px;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-copy h2{
  color:var(--bone);
  font-size:34px;
  font-weight:800;
  margin-bottom:12px;
}
.cta-copy p{
  font-size:15.5px;
  color:rgba(246,244,239,.72);
  max-width:560px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid rgba(246,244,239,.16);
}
.trust-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(246,244,239,.7);
}
.trust-item i{
  width:8px;height:8px;
  border-radius:2px;
  background:var(--accent);
  display:inline-block;
}
.back-home{
  padding:28px 0 0;
  font-size:14px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(246,244,239,.88);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 2fr 2fr 3fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(246,244,239,.16);
}
.footer-logo{
  display:inline-block;
  font-size:18px;
  font-weight:800;
  color:var(--bone);
  margin-bottom:12px;
}
.footer-brand p{
  font-size:14px;
  color:rgba(246,244,239,.68);
  max-width:280px;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:var(--bone);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li,
.footer-col span,
.footer-col a{
  font-size:14px;
  color:rgba(246,244,239,.72);
}
.footer-col a{transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:rgba(246,244,239,.6);
}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(16,20,19,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(88vw,380px);
  background:var(--bone);
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  z-index:90;
  display:flex;
  flex-direction:column;
  padding:24px 24px 28px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:20px;
}
.drawer-close{
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:10px;
  font-size:20px;
  line-height:1;
  color:var(--ink);
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:18px;
  font-weight:600;
  line-height:56px;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--ink);font-weight:800;box-shadow:inset 3px 0 0 var(--accent);padding-left:12px;}
.drawer-foot{
  margin-top:auto;
  padding-top:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
}

/* ---------- 进入视口动画 ---------- */
.reveal-up{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .38s var(--ease),transform .38s var(--ease);
}
.reveal-up.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-up{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero-block h1{font-size:50px;}
}
@media (max-width:1024px){
  .nav-links,.header-actions{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{min-height:64px;}
  .hero-block h1{font-size:44px;}
  .benefit-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:2fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .top-note{display:none;}
  .top-bar-inner{justify-content:space-between;}
  .section{padding-top:64px;}
  .hero-block{padding-top:24px;}
  .hero-block h1{
    font-size:32px;
    padding-left:16px;
    margin-left:-20px;
  }
  .hero-sub{font-size:16.5px;margin-top:16px;}
  .stat-strip{grid-template-columns:1fr;margin-top:32px;}
  .stat-item{
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:18px 0;
  }
  .stat-item:last-child{border-bottom:0;}
  .section-head h2{font-size:25px;}
  .rail-wrap{margin:0 -20px;padding:0 20px;}
  .rail-card{flex:0 0 84%;}
  .stagger-row,
  .stagger-row.is-reverse{
    grid-template-columns:1fr;
    gap:24px;
  }
  .stagger-row.is-reverse .stagger-media{order:1;}
  .stagger-row.is-reverse .stagger-copy{order:2;}
  .stagger-copy h2{font-size:24px;}
  .benefit-grid{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{margin-top:64px;padding:52px 0 44px;}
  .cta-copy h2{font-size:26px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-block h1{font-size:30px;}
  .hero-actions .btn{width:100%;}
  .rail-card{flex:0 0 88%;padding:22px 20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}

/* roulang page: category3 */
:root{
  --ink:#101413;
  --bone:#F6F4EF;
  --card:#FFFFFF;
  --lime:#C6F24E;
  --copper:#D98F2B;
  --line:#E4E0D7;
  --muted:#5A605C;
  --body:#222725;
  --r-pill:999px;
  --r-card:12px;
  --r-img:10px;
  --r-input:8px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04), 0 10px 28px -18px rgba(16,20,19,.22);
  --shadow-2:0 1px 2px rgba(16,20,19,.04), 0 16px 40px -20px rgba(16,20,19,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap-s:8px;
  --gap-m:16px;
  --gap-l:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bone);
  color:var(--body);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.02em;line-height:1.18;font-weight:800;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(246,244,239,.88);font-size:13px;line-height:1.6;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--gap-m);min-height:36px;}
.topbar-left{letter-spacing:.02em;white-space:nowrap;}
.topbar-mid{color:rgba(246,244,239,.62);white-space:nowrap;}
.topbar-right{display:flex;align-items:center;gap:12px;white-space:nowrap;}
.topbar-right a{color:rgba(246,244,239,.88);}
.topbar-right a:hover{color:var(--lime);}
.topbar-right .divider{width:1px;height:12px;background:rgba(246,244,239,.28);display:inline-block;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--bone);border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease);}
.site-header.is-scrolled{box-shadow:0 6px 24px -16px rgba(16,20,19,.34);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--gap-l);min-height:72px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{width:36px;height:36px;flex:0 0 auto;border-radius:10px;border:1.5px solid var(--lime);display:grid;place-items:center;background:var(--ink);}
.brand-mark span{width:14px;height:14px;border:1.5px solid var(--lime);border-radius:3px;display:block;transform:rotate(45deg);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:center;}
.nav-link{position:relative;font-size:15px;font-weight:600;color:var(--body);padding:6px 0;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--lime);transform:translateX(-50%);transition:width .2s var(--ease);}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:800;}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-login{font-size:15px;font-weight:600;color:var(--muted);}
.nav-login:hover{color:var(--ink);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-pill);font-size:15px;font-weight:700;letter-spacing:.01em;transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:var(--bone);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:var(--bone);color:var(--ink);}
.btn-light:hover{background:var(--lime);color:var(--ink);transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 22px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);}
.link-arrow i{font-style:normal;font-size:16px;line-height:1;transition:transform .2s var(--ease);}
.link-arrow:hover i{transform:translateX(3px);}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--card);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:rgba(16,20,19,.6);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);}
.drawer.is-open{opacity:1;pointer-events:auto;}
.drawer-panel{position:absolute;top:0;right:0;width:min(88vw,380px);height:100%;background:var(--bone);display:flex;flex-direction:column;transform:translateX(100%);transition:transform .28s var(--ease);}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--card);font-size:18px;color:var(--ink);}
.drawer-nav{padding:8px 0;flex:1 1 auto;overflow:auto;}
.drawer-nav a{display:block;padding:0 20px;height:56px;line-height:56px;font-size:18px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--ink);font-weight:800;box-shadow:inset 3px 0 0 var(--lime);}
.drawer-foot{padding:20px;border-top:1px solid var(--line);}

/* ---------- 面包屑 ---------- */
.crumbs{padding:20px 0 0;font-size:13px;color:var(--muted);line-height:1.6;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--ink);}
.crumbs .sep{margin:0 8px;color:#B9B4A8;}

/* ---------- 页头区 ---------- */
.page-head{padding:36px 0 0;}
.page-head h1{font-size:clamp(30px,4.4vw,52px);max-width:900px;}
.page-head .lead{margin-top:20px;max-width:720px;font-size:17px;color:var(--muted);line-height:1.8;}
.head-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;}
.chip{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--card);font-size:13px;color:var(--muted);}
.chip-lime{border-color:var(--lime);color:var(--ink);background:rgba(198,242,78,.22);}

/* ---------- 主体两栏 ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.layout-split{display:grid;grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:start;}
.side-sticky{position:sticky;top:104px;}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);}
.side-card h2{font-size:17px;margin-bottom:16px;}
.side-list li{border-top:1px solid var(--line);}
.side-list li:first-child{border-top:0;}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:15px;font-weight:600;color:var(--body);}
.side-list a span{color:var(--muted);font-size:13px;font-weight:400;}
.side-list a:hover{color:var(--ink);}
.side-list a:hover span{color:var(--ink);}
.side-stat{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:14px;}
.side-stat-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;}
.side-stat-num{font-size:26px;font-weight:800;color:var(--ink);}
.side-stat-label{font-size:13px;color:var(--muted);}
.side-note{margin-top:20px;font-size:13px;color:var(--muted);line-height:1.7;}

/* ---------- 条目列表 ---------- */
.block-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.block-head h2{font-size:clamp(24px,2.8vw,32px);}
.block-head .desc{max-width:520px;font-size:15px;color:var(--muted);}
.op-list{border-top:1px solid var(--line);}
.op-item{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:26px 16px;border-bottom:1px solid var(--line);transition:background-color .22s var(--ease);}
.op-item:hover{background:rgba(198,242,78,.10);}
.op-num{font-size:20px;font-weight:800;color:var(--copper);line-height:1.2;}
.op-item h3{font-size:19px;margin-bottom:8px;}
.op-item p{font-size:15px;color:var(--muted);line-height:1.8;}
.op-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--card);font-size:12px;color:var(--muted);}
.tag-warm{border-color:rgba(217,143,43,.45);color:#8A5A12;background:rgba(217,143,43,.10);}

/* ---------- 操作路径 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.path-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);}
.path-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6D1C4;}
.path-card .idx{font-size:14px;font-weight:800;color:var(--ink);background:var(--lime);display:inline-flex;height:26px;padding:0 12px;border-radius:var(--r-pill);align-items:center;}
.path-card h3{font-size:19px;margin:16px 0 10px;}
.path-card p{font-size:15px;color:var(--muted);line-height:1.8;}
.path-card ul{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.path-card li{position:relative;padding-left:18px;font-size:14px;color:var(--muted);}
.path-card li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--lime);}

/* ---------- 图文区块 ---------- */
.media-block{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;}
.media-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--ink);box-shadow:var(--shadow-1);}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .26s var(--ease);}
.media-figure:hover img{transform:scale(1.03);}
.media-body h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:18px;}
.media-body p{font-size:16px;color:var(--muted);line-height:1.85;}
.media-body ul{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.media-body li{padding-left:20px;position:relative;font-size:15px;color:var(--body);}
.media-body li::before{content:"";position:absolute;left:0;top:12px;width:12px;height:2px;background:var(--lime);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:300px minmax(0,1fr);gap:56px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px 22px 16px;text-align:left;font-size:17px;font-weight:700;color:var(--ink);position:relative;transition:background-color .2s var(--ease);}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:transparent;transition:background-color .2s var(--ease);}
.faq-item.is-open .faq-q::before{background:var(--lime);}
.faq-q:hover{background:rgba(198,242,78,.10);}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .24s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);border-radius:2px;}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;transition:opacity .24s var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{padding:0 4px 24px 16px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 互链 ---------- */
.cross-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.cross-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease);}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.cross-card .kicker{font-size:13px;color:var(--copper);font-weight:700;letter-spacing:.04em;}
.cross-card h3{font-size:18px;margin:10px 0 8px;}
.cross-card p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:rgba(246,244,239,.88);}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center;padding:72px 0 28px;}
.cta-inner h2{color:var(--bone);font-size:clamp(24px,2.8vw,34px);}
.cta-inner p{margin-top:14px;font-size:16px;color:rgba(246,244,239,.7);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.trust-row{display:flex;flex-wrap:wrap;gap:32px;padding:24px 0 56px;border-top:1px solid rgba(246,244,239,.16);margin-top:28px;}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(246,244,239,.7);}
.trust-item i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:block;font-style:normal;}
.back-home{margin-top:32px;font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.88);padding:64px 0 28px;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(246,244,239,.16);}
.footer-logo{display:block;font-size:18px;font-weight:800;color:var(--bone);margin-bottom:14px;}
.footer-brand p{font-size:14px;color:rgba(246,244,239,.7);line-height:1.75;max-width:300px;}
.footer-col h3{font-size:14px;color:var(--bone);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(246,244,239,.72);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:rgba(246,244,239,.6);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .34s var(--ease),transform .34s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .layout-split{grid-template-columns:300px minmax(0,1fr);gap:40px;}
  .faq-wrap{grid-template-columns:260px minmax(0,1fr);gap:40px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-login{display:none;}
  .nav-actions .btn{display:none;}
  .layout-split{grid-template-columns:minmax(0,1fr);gap:32px;}
  .side-sticky{position:static;}
  .path-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .media-block{grid-template-columns:minmax(0,1fr);gap:32px;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:24px;}
  .cross-links{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;padding:56px 0 24px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .topbar-mid{display:none;}
  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
  .page-head{padding-top:24px;}
  .op-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:22px 8px;}
  .op-num{font-size:17px;}
  .path-grid{grid-template-columns:minmax(0,1fr);}
  .cross-links{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .trust-row{gap:18px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:519px){
  .brand-sub{display:none;}
  .block-head{margin-bottom:24px;}
  .side-card{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .media-figure:hover img{transform:none;}
  .path-card:hover,.cross-card:hover{transform:none;}
  .btn:hover{transform:none;}
}

/* roulang page: category4 */
:root{
  --ink:#101413;
  --ink-70:rgba(16,20,19,.7);
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --lime:#C6F24E;
  --copper:#D98F2B;
  --line:#E4E0D7;
  --muted:#5A605C;
  --text:#222725;
  --radius-card:12px;
  --radius-img:10px;
  --radius-input:8px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,20,19,.04), 0 10px 28px -18px rgba(16,20,19,.22);
  --shadow-2:0 16px 40px -20px rgba(16,20,19,.3);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap-s:8px;
  --gap-m:16px;
  --gap-l:24px;
  --gap-xl:32px;
  --section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.02em;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.narrow{max-width:720px;margin:0 auto;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#F6F4EF;font-size:13px;line-height:36px;}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  max-width:1240px;margin:0 auto;padding:0 24px;
}
.topbar-domain{opacity:.78;letter-spacing:.02em;}
.topbar-tip{color:rgba(246,244,239,.72);}
.topbar-actions{display:flex;align-items:center;gap:0;}
.topbar-actions a{color:#F6F4EF;padding:0 12px;transition:color .2s var(--ease);}
.topbar-actions a:first-child{padding-left:0;}
.topbar-actions a:hover{color:var(--lime);}
.topbar-actions .divider{width:1px;height:12px;background:rgba(246,244,239,.28);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -20px rgba(16,20,19,.35);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;max-width:1240px;margin:0 auto;padding:0 24px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;border:2px solid var(--ink);
  display:grid;place-items:center;position:relative;flex-shrink:0;
}
.logo-mark::before{
  content:"";position:absolute;inset:6px;border-radius:3px;background:var(--lime);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--ink);
  padding:8px 12px;border-radius:var(--radius-pill);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;
  background:var(--lime);transition:left .2s var(--ease),right .2s var(--ease);
}
.nav-link:hover::after{left:12px;right:12px;}
.nav-link.is-active{font-weight:800;}
.nav-link.is-active::after{left:12px;right:12px;}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);}
.btn-primary:hover{background:var(--ink);color:#F6F4EF;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#F6F4EF;transform:translateY(-1px);}
.btn-light{background:#F6F4EF;color:var(--ink);}
.btn-light:hover{background:var(--lime);color:var(--ink);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);}
.link-arrow .arw{transition:transform .22s var(--ease);}
.link-arrow:hover .arw{transform:translateX(3px);}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
}
.drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(16,20,19,.6);}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(88vw,360px);height:100%;
  background:var(--paper);padding:24px 20px 32px;display:flex;flex-direction:column;
  box-shadow:-20px 0 48px -30px rgba(16,20,19,.5);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);font-size:18px;line-height:1;cursor:pointer;color:var(--ink);
}
.drawer-nav a{
  display:block;font-size:18px;font-weight:600;line-height:56px;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-nav a.is-active{color:var(--ink);font-weight:800;box-shadow:inset 3px 0 0 var(--lime);padding-left:12px;}
.drawer-foot{margin-top:auto;display:grid;gap:12px;}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--muted);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li::after{content:"/";margin-left:8px;color:var(--line);}
.crumb li:last-child::after{content:"";}
.crumb a{color:var(--muted);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--ink);}

/* ---------- 宣言式标题区 ---------- */
.declaration{
  max-width:720px;margin:0 auto;padding:64px 24px 0;text-align:left;
}
.declaration .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--ink);background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:6px 14px;margin-bottom:24px;
}
.declaration .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:block;}
.declaration h1{
  font-size:clamp(32px,5vw,48px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  color:var(--ink);margin-bottom:20px;
}
.declaration .lead{font-size:17px;color:var(--muted);max-width:640px;}
.declaration .figure{margin:36px 0 0;}
.declaration .figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line);}
.declaration .figure figcaption{font-size:13px;color:var(--muted);margin-top:10px;}

/* ---------- 指标条 ---------- */
.metrics{
  max-width:720px;margin:36px auto 0;padding:0 24px;
  display:grid;grid-template-columns:repeat(3,1fr);
}
.metrics .m{padding:18px 16px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.metrics .m + .m{border-left:1px solid var(--line);}
.metrics .v{font-size:28px;font-weight:800;color:var(--ink);line-height:1.2;}
.metrics .k{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section) 0 0;}
.section-head{max-width:720px;margin:0 auto;padding:0 24px 32px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.25;letter-spacing:-.015em;color:var(--ink);
}
.section-head p{color:var(--muted);font-size:16px;margin-top:12px;max-width:640px;}

/* ---------- 时间轴 ---------- */
.timeline{max-width:720px;margin:0 auto;padding:0 24px;position:relative;}
.tl-item{position:relative;padding:0 0 36px 40px;}
.tl-item::before{
  content:"";position:absolute;left:7px;top:24px;bottom:-4px;width:1px;background:var(--line);
}
.tl-item:last-child::before{display:none;}
.tl-dot{
  position:absolute;left:0;top:6px;width:15px;height:15px;border-radius:50%;
  background:var(--lime);border:3px solid var(--paper);box-shadow:0 0 0 1px var(--line);
}
.tl-step{
  display:inline-block;font-size:13px;font-weight:700;color:var(--ink);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:3px 12px;margin-bottom:10px;
}
.tl-item h3{font-size:19px;font-weight:800;color:var(--ink);line-height:1.4;margin-bottom:8px;}
.tl-item p{font-size:15px;color:var(--muted);}
.tl-item ul{margin-top:10px;display:grid;gap:6px;}
.tl-item ul li{position:relative;padding-left:16px;font-size:15px;color:var(--muted);}
.tl-item ul li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--copper);
}

/* ---------- 清单 ---------- */
.check-panel{
  max-width:720px;margin:0 auto;padding:28px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.check-list{display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text);}
.check-list .box{
  width:20px;height:20px;border-radius:6px;background:var(--lime);flex-shrink:0;margin-top:5px;
  position:relative;
}
.check-list .box::after{
  content:"";position:absolute;left:6px;top:3px;width:6px;height:10px;
  border:solid var(--ink);border-width:0 2px 2px 0;transform:rotate(45deg);
}
.check-list strong{font-weight:800;color:var(--ink);}
.check-note{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:14px;color:var(--muted);
}

/* ---------- 手风琴 ---------- */
.faq-wrap{max-width:720px;margin:0 auto;padding:0 24px;}
.accordion{margin:0;background:transparent;border:none;}
.accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .24s var(--ease);
}
.accordion .accordion-item:hover{box-shadow:var(--shadow-1);}
.accordion .accordion-title{
  border:none;border-radius:0;background:transparent;color:var(--ink);
  font-size:17px;font-weight:700;line-height:1.5;padding:18px 56px 18px 22px;
  position:relative;
}
.accordion .accordion-title::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;
  transition:background .24s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::before{background:var(--lime);}
.accordion .accordion-title::after{
  content:"";position:absolute;right:24px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:translateY(-70%) rotate(45deg);transition:transform .24s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-30%) rotate(-135deg);}
.accordion .accordion-content{
  border:none;padding:0 22px 20px;background:transparent;
}
.accordion .accordion-content p{font-size:15px;line-height:1.8;color:var(--muted);}
.accordion .accordion-content p + p{margin-top:10px;}

/* ---------- 互链 ---------- */
.cross{max-width:720px;margin:0 auto;padding:0 24px;}
.cross-grid{display:grid;gap:12px;}
.cross-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--ink);}
.cross-card .tt{font-size:17px;font-weight:700;color:var(--ink);}
.cross-card .ds{font-size:14px;color:var(--muted);margin-top:4px;}
.cross-card .arw{font-size:16px;color:var(--ink);transition:transform .22s var(--ease);}
.cross-card:hover .arw{transform:translateX(3px);}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:var(--section);
  background:var(--ink);color:#F6F4EF;padding:64px 0;
}
.cta-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.015em;}
.cta-inner .sub{color:rgba(246,244,239,.72);font-size:16px;margin-top:12px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.trust{
  max-width:1240px;margin:32px auto 0;padding:24px 24px 0;
  border-top:1px solid rgba(246,244,239,.16);
  display:flex;flex-wrap:wrap;gap:28px;font-size:13px;color:rgba(246,244,239,.66);
}
.trust span{display:inline-flex;align-items:center;gap:8px;}
.trust i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:block;}
.back-home{padding:28px 0 0;}
.back-home a{font-size:14px;font-weight:600;color:var(--muted);}
.back-home a:hover{color:var(--ink);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,244,239,.88);margin-top:0;padding:64px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:32px;
}
.footer-brand .footer-logo{font-size:17px;font-weight:800;color:#F6F4EF;display:block;margin-bottom:12px;}
.footer-brand p{font-size:14px;color:rgba(246,244,239,.66);max-width:280px;}
.footer-col h3{font-size:14px;font-weight:700;color:#F6F4EF;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(246,244,239,.72);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(246,244,239,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(246,244,239,.6);
}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .34s var(--ease),transform .34s var(--ease);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--section:88px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .header-actions .btn-primary{display:none;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar-inner{padding:0 20px;}
  .topbar-tip{display:none;}
  .header-inner{padding:0 20px;height:64px;}
  :root{--section:60px;}
  .declaration{padding:40px 20px 0;}
  .declaration h1{font-size:32px;}
  .metrics{padding:0 20px;}
  .metrics .m{padding:14px 10px;}
  .metrics .v{font-size:22px;}
  .section-head{padding:0 20px 24px;}
  .timeline{padding:0 20px;}
  .tl-item{padding-left:32px;}
  .faq-wrap{padding:0 20px;}
  .cross{padding:0 20px;}
  .check-panel{padding:22px;}
  .cta-band{padding:48px 0;}
  .cta-inner{padding:0 20px;}
  .trust{padding:20px 20px 0;gap:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .header-actions .link-arrow{display:none;}
}
@media (max-width:519px){
  .metrics{grid-template-columns:1fr;}
  .metrics .m + .m{border-left:none;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}