/* roulang page: index */
:root{
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF3FB;
  --c-line:#E3E9F2;
  --c-line-strong:#D3DCEC;
  --c-text:#0F1B2D;
  --c-text-2:#56678A;
  --c-text-3:#8A99B3;
  --c-primary:#2160E6;
  --c-primary-dark:#1747B0;
  --c-primary-100:#E7EFFE;
  --c-accent:#12B39B;
  --c-accent-text:#0E8F7D;
  --c-spark:#FF7A45;
  --c-danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.06);
  --shadow-md:0 6px 20px rgba(16,32,64,.08);
  --shadow-lg:0 16px 40px rgba(16,32,64,.10);
  --dur:180ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
a:hover{color:var(--c-primary-dark)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.num,.time{font-variant-numeric:tabular-nums}
.nowrap{white-space:nowrap}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.02em;margin-bottom:10px}
.section-title{font-size:32px}
.section-desc{color:var(--c-text-2);margin-top:12px;max-width:660px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;white-space:nowrap}
.text-link:hover{gap:10px}
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--c-primary-100);color:var(--c-primary);font-size:12.5px;font-weight:600;white-space:nowrap}
.badge--accent{background:rgba(18,179,155,.12);color:var(--c-accent-text)}
.badge--plain{background:var(--c-surface-2);color:var(--c-text-2)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-ghost{background:#fff;color:var(--c-text);border-color:var(--c-line-strong)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text)}
.brand:hover{color:var(--c-text)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,#2160E6 0%,#1747B0 100%);
  color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;
}
.brand-text{font-size:15px;font-weight:600;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:10px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  border-radius:8px;color:var(--c-text-2);font-size:14px;white-space:nowrap;
}
.nav-link:hover{background:var(--c-primary-100);color:var(--c-primary)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-13px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.command-search{
  display:flex;align-items:center;gap:8px;width:240px;height:36px;padding:0 10px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.command-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12)}
.command-search svg{flex:0 0 16px;color:var(--c-text-3)}
.command-search input{flex:1 1 auto;min-width:0;border:0;outline:none;background:none;font-size:14px}
.command-search input::placeholder{color:var(--c-text-3)}
.kbd{font-size:11px;line-height:1.6;color:var(--c-text-3);background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:6px;padding:1px 5px;white-space:nowrap}
.quick-link{font-size:14px;font-weight:600;white-space:nowrap}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text);align-items:center;justify-content:center;flex:0 0 40px;
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.4);z-index:70;
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:80;height:100%;width:min(88vw,340px);
  background:#fff;box-shadow:var(--shadow-lg);padding:20px;overflow-y:auto;
  transform:translateX(102%);transition:transform var(--dur) var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.drawer-title{font-size:15px;font-weight:600}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);display:grid;place-items:center;color:var(--c-text-2)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.drawer-nav a{padding:12px 14px;border-radius:10px;background:var(--c-surface-2);color:var(--c-text);font-size:15px;font-weight:600}
.drawer-nav a.is-active{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:1px solid var(--c-line);border-radius:10px;background:var(--c-surface-2);margin-bottom:16px}
.drawer-search input{flex:1;min-width:0;border:0;outline:none;background:none;font-size:15px}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;padding:88px 0 104px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(33,96,230,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(33,96,230,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.status-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow-sm);
  font-size:13px;font-weight:600;color:var(--c-text-2);margin-bottom:20px;
}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 3px rgba(18,179,155,.16)}
.hero h1{font-size:44px;margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.trust-row{display:flex;flex-wrap:wrap;gap:36px}
.trust-item{min-width:96px}
.trust-num{font-size:28px;font-weight:600;line-height:1.2;color:var(--c-spark)}
.trust-num--blue{color:var(--c-primary)}
.trust-label{font-size:13px;color:var(--c-text-3);margin-top:4px}
.hero-visual{position:relative;padding-bottom:34px}
.hero-figure{
  position:relative;border-radius:20px;overflow:hidden;background:var(--c-surface-2);
  aspect-ratio:16/10;box-shadow:var(--shadow-lg);border:1px solid var(--c-line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;right:0;bottom:0;width:min(330px,92%);
  display:flex;align-items:center;gap:12px;padding:14px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-lg);
}
.float-thumb{width:56px;height:56px;flex:0 0 56px;border-radius:12px;overflow:hidden;background:var(--c-surface-2)}
.float-thumb img{width:100%;height:100%;object-fit:cover}
.float-body{min-width:0;flex:1 1 auto}
.float-title{font-size:13.5px;font-weight:600;margin-bottom:6px}
.mini-track{display:flex;gap:6px}
.mini-track span{height:4px;border-radius:2px;background:var(--c-surface-2);flex:1 1 auto}
.mini-track span.is-done{background:var(--c-primary)}
.mini-track span.is-half{background:var(--c-accent)}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin-top:52px}
.step{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:42px 24px 26px;box-shadow:var(--shadow-sm);
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step--lead{border:2px solid var(--c-primary);padding-top:48px}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.step-num{
  position:absolute;top:-22px;left:24px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-size:17px;font-weight:700;
  background:#fff;color:var(--c-primary);border:1px solid var(--c-line-strong);
  box-shadow:var(--shadow-sm);
}
.step--lead .step-num{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.step + .step::before{
  content:"";position:absolute;top:56px;left:-33px;width:32px;
  border-top:1px dashed var(--c-line-strong);
}
.step h3{font-size:20px;margin-bottom:12px}
.step p{color:var(--c-text-2);font-size:15px}
.step-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.step-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-text-2)}
.step-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.step-meta{margin-top:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.steps-foot{margin-top:28px;font-size:15px;color:var(--c-text-2)}

/* ---------- 入口能力 ---------- */
.cap-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:start}
.cap-rows{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden}
.cap-row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:24px;padding:26px 24px;border-bottom:1px solid var(--c-line)}
.cap-row:last-child{border-bottom:0}
.cap-row h3{font-size:18px}
.cap-row p{color:var(--c-text-2);font-size:15px;margin-top:8px}
.cap-row .cap-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.cap-index{font-size:13px;font-weight:700;color:var(--c-spark);letter-spacing:.06em}
.cap-side{
  background:linear-gradient(135deg,var(--c-primary-100) 0%,#FFFFFF 100%);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-sm);
}
.cap-side h3{font-size:18px;margin-bottom:16px}
.cap-params{display:flex;flex-direction:column;gap:14px}
.cap-params li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px dashed var(--c-line-strong);font-size:14px;color:var(--c-text-2)}
.cap-params li:last-child{border-bottom:0;padding-bottom:0}
.cap-params strong{font-size:20px;color:var(--c-primary);font-weight:600}
.cap-note{margin-top:18px;font-size:13.5px;color:var(--c-text-2)}

/* ---------- 案例证明 ---------- */
.proof-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:stretch}
.case-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.case-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.case-figure{aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden}
.case-figure img{width:100%;height:100%;object-fit:cover}
.case-body{padding:24px}
.case-body h3{font-size:20px;margin-bottom:10px}
.case-body p{color:var(--c-text-2);font-size:15px}
.case-meta{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 16px}
.quote-stack{display:flex;flex-direction:column;gap:24px}
.quote-card{
  flex:1 1 auto;position:relative;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-sm);
}
.quote-card::before{
  content:"“";position:absolute;top:6px;left:18px;font-size:52px;line-height:1;
  color:var(--c-primary-100);font-family:Georgia,serif;
}
.quote-card blockquote{margin:0;padding-top:26px;font-size:14px;line-height:1.8;color:var(--c-text-2)}
.quote-by{margin-top:14px;font-size:13px;color:var(--c-text-3)}
.partner-wall{
  margin-top:32px;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:#fff;
}
.partner{
  padding:18px 10px;text-align:center;font-size:13px;color:var(--c-text-2);
  border-right:1px solid var(--c-line);filter:grayscale(1);opacity:.5;
  transition:opacity var(--dur) var(--ease),filter var(--dur) var(--ease),color var(--dur) var(--ease);
}
.partner:last-child{border-right:0}
.partner:hover{opacity:1;filter:none;color:var(--c-primary)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:24px;align-items:start}
.news-feature{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.news-feature:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.news-feature .news-figure{aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden}
.news-feature .news-figure img{width:100%;height:100%;object-fit:cover}
.news-feature-body{padding:24px}
.news-feature h3{font-size:20px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature p{color:var(--c-text-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}
.news-list{display:flex;flex-direction:column;gap:12px}
.news-item{
  display:flex;gap:14px;padding:12px;background:#fff;border:1px solid var(--c-line);
  border-radius:14px;box-shadow:var(--shadow-sm);color:var(--c-text);
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.news-item:hover{background:var(--c-surface-2);border-color:var(--c-line-strong);color:var(--c-text);transform:translateY(-2px)}
.news-thumb{width:88px;height:88px;flex:0 0 88px;border-radius:12px;overflow:hidden;background:var(--c-surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item-body{min-width:0;flex:1 1 auto;display:flex;flex-direction:column}
.news-item h3{font-size:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item:hover h3{color:var(--c-primary)}
.news-item p{margin-top:6px;font-size:13.5px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:10px;font-size:13px;color:var(--c-text-3)}
.news-arrow{margin-left:auto;color:var(--c-primary);font-weight:600}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--c-line-strong);border-radius:var(--r-card);background:#fff;padding:32px;text-align:center;
}
.empty-icon{width:56px;height:56px;border-radius:16px;background:var(--c-primary-100);display:grid;place-items:center;color:var(--c-primary)}
.empty-state p{color:var(--c-text-2);font-size:15px}

/* ---------- 常见问题 ---------- */
.faq-wrap{max-width:860px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:64px;padding:20px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open]{border-left:3px solid var(--c-primary)}
.faq-caret{flex:0 0 auto;color:var(--c-text-3);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
.faq-item[open] .faq-caret{transform:rotate(180deg);color:var(--c-primary)}
.faq-body{padding:0 22px 22px;color:var(--c-text-2);font-size:15px;line-height:1.8}

/* ---------- 立即开通 ---------- */
.cta-card{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;
  padding:40px;border:1px solid var(--c-line);border-radius:20px;
  background:linear-gradient(135deg,var(--c-primary-100) 0%,#FFFFFF 100%);
  box-shadow:var(--shadow-sm);
}
.cta-card h2{font-size:32px;margin-bottom:14px}
.cta-lead{color:var(--c-text-2);max-width:480px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.cta-points li{position:relative;padding-left:26px;font-size:15px;color:var(--c-text-2)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--c-accent);opacity:.16;
}
.cta-points li::after{
  content:"";position:absolute;left:5px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.cta-form{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-md)}
.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.form-row label{font-size:13px;color:var(--c-text-2)}
.form-row input,.form-row select{
  height:44px;padding:0 14px;background:#fff;border:1px solid var(--c-line-strong);border-radius:var(--r-btn);
  outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.form-row input:focus,.form-row select:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12)}
.form-row.has-error input{border-color:var(--c-danger)}
.form-error{display:none;color:var(--c-danger);font-size:13px}
.form-row.has-error .form-error{display:block}
.form-success{display:none;margin-top:12px;font-size:13.5px;color:var(--c-accent-text)}
.form-success.is-visible{display:block}
.form-tip{margin-top:12px;font-size:12.5px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);padding-top:64px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--c-text-2);max-width:320px}
.footer-title{font-size:14px;font-weight:600;margin-bottom:14px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--c-text-2);display:inline-block}
.footer-links a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--c-text-2);margin-bottom:10px}
.footer-bottom{
  margin-top:44px;padding:18px 0;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 进入视口动效 ---------- */
.js .reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .command-search{width:200px}
  .hero-grid{gap:40px}
  .hero h1{font-size:40px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .main-nav{display:none}
  .command-search{display:none}
  .quick-link{display:none}
  .menu-toggle{display:inline-flex}
  .header-right{margin-left:auto;gap:10px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .steps{grid-template-columns:1fr;gap:44px;margin-top:44px}
  .step + .step::before{left:22px;top:-44px;width:0;height:44px;border-top:0;border-left:1px dashed var(--c-line-strong)}
  .cap-grid{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .cta-card{grid-template-columns:1fr;gap:28px}
  .partner-wall{grid-template-columns:repeat(3,minmax(0,1fr))}
  .partner:nth-child(3){border-right:0}
  .partner:nth-child(n+4){border-top:1px solid var(--c-line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .hero{padding:56px 0 72px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:22px}
  .trust-num{font-size:24px}
  .section-title{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .cap-row{grid-template-columns:1fr;gap:8px;padding:22px 20px}
  .case-body,.news-feature-body,.quote-card,.cap-side,.cta-form{padding:20px}
  .news-item{flex-direction:column}
  .news-thumb{width:100%;height:auto;flex:none;aspect-ratio:16/10}
  .cta-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  body{font-size:15px}
  .brand-text{font-size:14px}
  .hero h1{font-size:26px}
  .section-title{font-size:22px}
  .step{padding:38px 18px 22px}
  .news-feature-body,.case-body{padding:16px}
  .partner-wall{grid-template-columns:repeat(2,minmax(0,1fr))}
  .partner:nth-child(2n){border-right:0}
  .partner:nth-child(3){border-right:1px solid var(--c-line)}
  .partner:nth-child(n+3){border-top:1px solid var(--c-line)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF3FB;
  --c-line:#E3E9F2;
  --c-line-strong:#D3DCEC;
  --c-text:#0F1B2D;
  --c-text-2:#56678A;
  --c-text-3:#8A99B3;
  --c-primary:#2160E6;
  --c-primary-dark:#1747B0;
  --c-primary-100:#E7EFFE;
  --c-accent:#12B39B;
  --c-spark:#FF7A45;
  --c-danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.06);
  --shadow-md:0 6px 20px rgba(16,32,64,.08);
  --shadow-lg:0 16px 40px rgba(16,32,64,.10);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-primary-dark)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-0.01em;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,96,230,.18);border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:var(--nav-h);
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,#2160E6 0%,#3E82FF 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.brand-text{font-size:15px;font-weight:600;color:var(--c-text);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--c-text-2);white-space:nowrap;transition:background var(--ease),color var(--ease);
}
.nav-link:hover{background:var(--c-primary-100);color:var(--c-primary)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-14px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:36px;padding:0 10px;
  background:var(--c-surface-2);border:1px solid transparent;border-radius:var(--radius-btn);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.command-search svg{flex-shrink:0;color:var(--c-text-3)}
.command-search input{
  border:0;background:transparent;outline:none;width:100%;font-size:13px;color:var(--c-text);
}
.command-search input::placeholder{color:var(--c-text-3)}
.command-search:focus-within{
  background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12);
}
.kbd{
  font-size:11px;line-height:1;padding:4px 6px;border-radius:6px;
  background:#fff;border:1px solid var(--c-line-strong);color:var(--c-text-3);white-space:nowrap;
}
.header-link{font-size:14px;color:var(--c-text-2);white-space:nowrap}
.header-link:hover{color:var(--c-primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);cursor:pointer;
  font-size:14px;font-weight:600;padding:0 18px;height:36px;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-ghost{background:#fff;color:var(--c-text);border-color:var(--c-line-strong)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn-lg{height:46px;padding:0 24px;font-size:15px}
.btn-block{width:100%}
.hamburger{
  display:none;width:38px;height:38px;border-radius:10px;background:var(--c-surface-2);
  border:1px solid var(--c-line);align-items:center;justify-content:center;cursor:pointer;
}
.hamburger span{display:block;width:16px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-text);border-radius:2px;
}
.hamburger span::before{top:-5px}
.hamburger span::after{top:5px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.4);opacity:0;pointer-events:none;
  transition:opacity var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:#fff;z-index:80;
  transform:translateX(102%);transition:transform var(--ease);
  display:flex;flex-direction:column;padding:20px;gap:18px;overflow-y:auto;
  box-shadow:var(--shadow-lg);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--c-line);background:#fff;
  cursor:pointer;font-size:16px;color:var(--c-text-2);line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav .nav-link{padding:12px;font-size:15px}
.drawer-nav .nav-link.is-active::after{display:none}
.drawer .command-search{width:100%}

/* ---------- Page shell ---------- */
.page{padding:28px 0 0}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);margin-bottom:22px;
}
.crumbs a{color:var(--c-text-2)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:var(--c-line-strong)}
.crumbs .current{color:var(--c-primary);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article header ---------- */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
.article-head{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:34px 36px 30px;box-shadow:var(--shadow-sm);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:600;
  background:var(--c-primary-100);color:var(--c-primary);
}
.badge-accent{background:rgba(18,179,155,.12);color:#0E8E7C}
.article-cat{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px}
.article-title{
  font-size:34px;line-height:1.32;font-weight:700;color:var(--c-text);margin-bottom:18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);
}
.article-meta .dot{color:var(--c-line-strong)}
.article-cover{
  margin-top:26px;aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-img);
  background:var(--c-surface-2);box-shadow:var(--shadow-sm);
}
.article-cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.cover-caption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px}

/* ---------- Body ---------- */
.layout-body{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;align-items:start}
.article-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:38px 36px 44px;box-shadow:var(--shadow-sm);
  font-size:16.5px;line-height:1.9;color:#22304A;
}
.article-body > * + *{margin-top:18px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;color:var(--c-text);
  padding-left:14px;margin-top:40px;margin-bottom:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--c-primary);border-radius:3px;
}
.article-body h3{font-size:19px;margin-top:30px;margin-bottom:12px;color:var(--c-text)}
.article-body h4{font-size:17px;margin-top:24px;margin-bottom:10px;color:var(--c-text)}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--c-primary-dark)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:0}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);opacity:.55;
}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.1em;
  font-size:13px;font-weight:700;color:var(--c-spark);font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--c-primary-100);
  border-left:3px solid var(--c-primary);border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:#22304A;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;border-radius:var(--radius-img);margin:22px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;border:1px solid var(--c-line)}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body th{background:var(--c-surface-2);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--c-surface-2)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:var(--c-surface-2);padding:2px 6px;border-radius:6px;color:#1747B0;
}
.article-body pre{
  background:#0F1B2D;color:#E7EFFE;padding:18px;border-radius:var(--radius-img);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}

/* ---------- TOC ---------- */
.toc{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-sm);
}
.toc-title{font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow:auto}
.toc-list a{
  display:block;font-size:13.5px;color:var(--c-text-2);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.toc-list a:hover{background:var(--c-surface-2);color:var(--c-primary)}
.toc-list a.is-current{border-left-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100);font-weight:600}
.toc-list a.lv3{padding-left:22px;font-size:13px}

/* ---------- Tags / nav / related ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--c-surface-2);border:1px solid var(--c-line);font-size:13px;color:var(--c-text-2);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100)}
.section{padding:56px 0 0}
.section-head{margin-bottom:24px}
.section-title{font-size:26px;color:var(--c-text)}
.section-sub{font-size:14px;color:var(--c-text-2);margin-top:8px}
.prevnext{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:32px}
.pn-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.pn-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--c-line-strong)}
.pn-label{font-size:13px;color:var(--c-text-3);margin-bottom:8px}
.pn-title{font-size:16px;font-weight:600;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pn-card:hover .pn-title{color:var(--c-primary)}
.pn-card.is-right{text-align:right}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--c-line-strong)}
.card-media{aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;color:var(--c-text);line-height:1.5}
.card:hover .card-title{color:var(--c-primary)}
.card-text{font-size:14px;color:var(--c-text-2);line-height:1.8}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.meta-line{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3)}
.arrow-link{font-size:14px;font-weight:600;color:var(--c-primary)}
.back-entry{
  margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:22px 26px;box-shadow:var(--shadow-sm);
}
.back-entry p{font-size:14px;color:var(--c-text-2)}
.empty-state{
  border:1px dashed var(--c-line-strong);border-radius:var(--radius-card);background:var(--c-surface-2);
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;
}
.empty-state .es-title{font-size:18px;font-weight:600;color:var(--c-text)}
.empty-state .es-text{font-size:14px;color:var(--c-text-2)}
.mobile-toc{display:none}
.mobile-toc summary{
  cursor:pointer;font-size:14px;font-weight:600;color:var(--c-text);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:14px 18px;list-style:none;box-shadow:var(--shadow-sm);margin-bottom:16px;
}
.mobile-toc summary::-webkit-details-marker{display:none}
.mobile-toc[open] summary{border-radius:var(--radius-card) var(--radius-card) 0 0;margin-bottom:0}
.mobile-toc .toc{padding:16px;border-radius:0 0 var(--radius-card) var(--radius-card);border-top:0}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:80px;background:var(--c-bg);border-top:1px solid var(--c-line);padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:15px;font-weight:600}
.footer-desc{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:14px}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-links a,.footer-contact li{
  font-size:14px;color:var(--c-text-2);transition:color var(--ease),transform var(--ease);
}
.footer-links a{display:inline-block}
.footer-links a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.reveal{opacity:0;transform:translateY(8px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity 420ms cubic-bezier(.2,.7,.3,1),transform 420ms cubic-bezier(.2,.7,.3,1)}

/* ---------- Responsive ---------- */
@media (min-width:1280px){
  .layout-body{grid-template-columns:minmax(0,760px) 240px;justify-content:center;gap:36px}
  .article-head{max-width:1036px}
  .article-wrap{justify-content:center}
}
@media (max-width:1279px){
  .toc-desktop{display:none}
  .mobile-toc{display:block}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .header-actions .command-search{display:none}
  .header-actions .header-link{display:none}
  .hamburger{display:flex}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .article-body{padding:30px 26px 34px;font-size:16px}
  .article-head{padding:28px 26px 26px}
  .article-title{font-size:30px}
}
@media (max-width:767px){
  :root{--nav-h:56px}
  .container{padding:0 18px}
  .brand-text{font-size:14px}
  .article-title{font-size:26px}
  .article-body h2{font-size:21px;margin-top:32px}
  .section-title{font-size:22px}
  .section{padding:44px 0 0}
  .prevnext{grid-template-columns:minmax(0,1fr)}
  .pn-card.is-right{text-align:left}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .back-entry{flex-direction:column;align-items:flex-start}
  .btn-block-sm{width:100%}
}
@media (max-width:479px){
  .article-body{padding:24px 18px 28px}
  .article-head{padding:22px 18px}
  .article-title{font-size:23px}
  .brand-text{white-space:normal;line-height:1.3}
  .article-body h2{font-size:19px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF3FB;
  --c-line:#E3E9F2;
  --c-line-strong:#D3DCEC;
  --c-text:#0F1B2D;
  --c-text-2:#56678A;
  --c-text-3:#8A99B3;
  --c-primary:#2160E6;
  --c-primary-dark:#1747B0;
  --c-primary-100:#E7EFFE;
  --c-accent:#12B39B;
  --c-spark:#FF7A45;
  --c-danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-hero:20px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.06);
  --shadow-md:0 6px 20px rgba(16,32,64,.08);
  --shadow-lg:0 16px 40px rgba(16,32,64,.10);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --section-gap:96px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
a:hover{color:var(--c-primary-dark)}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-0.01em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(33,96,230,.28);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 顶部命令栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:linear-gradient(135deg,#2160E6,#1747B0);
  color:#fff;font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);
}
.brand-text{font-size:15px;font-weight:600;color:var(--c-text);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav .nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--c-text-2);white-space:nowrap;
  transition:background-color var(--ease),color var(--ease);
}
.main-nav .nav-link:hover{background:var(--c-primary-100);color:var(--c-primary)}
.main-nav .nav-link.is-active{color:var(--c-primary);font-weight:600}
.main-nav .nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:36px;padding:0 10px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-btn);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.command-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12)}
.command-search svg{flex:0 0 auto;color:var(--c-text-3)}
.command-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.command-search input::placeholder{color:var(--c-text-3)}
.kbd{
  flex:0 0 auto;font-size:11px;color:var(--c-text-3);
  border:1px solid var(--c-line-strong);border-radius:6px;
  padding:1px 5px;background:var(--c-surface-2);
}
.quick-link{font-size:14px;color:var(--c-text-2);white-space:nowrap}
.quick-link:hover{color:var(--c-primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:14px;font-weight:600;
  padding:0 18px;height:44px;white-space:nowrap;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn-sm{height:36px;padding:0 16px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--c-surface);color:var(--c-text);border:1px solid var(--c-line-strong)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-soft{background:var(--c-primary-100);color:var(--c-primary)}
.btn-soft:hover{background:#DCE7FD;color:var(--c-primary-dark)}
.btn-block{width:100%}
.menu-toggle{
  display:none;width:38px;height:38px;border-radius:var(--radius-btn);
  border:1px solid var(--c-line-strong);background:var(--c-surface);
  align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-text);border-radius:2px;
}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.4);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  background:var(--c-surface);z-index:80;
  transform:translateX(100%);transition:transform 220ms cubic-bezier(.2,.7,.3,1);
  padding:20px;overflow-y:auto;box-shadow:var(--shadow-lg);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:15px;font-weight:600}
.drawer-close{width:34px;height:34px;border-radius:8px;border:1px solid var(--c-line);background:var(--c-surface-2);font-size:16px;color:var(--c-text-2)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.drawer-nav a{padding:12px 14px;border-radius:10px;font-size:15px;color:var(--c-text-2);background:var(--c-surface-2)}
.drawer-nav a.is-active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.drawer .command-search{width:100%;margin-bottom:16px}

/* ============ 分类头部 ============ */
.cat-header{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
  padding:40px 0 0;
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-line-strong)}
.breadcrumb .current{color:var(--c-primary);font-weight:600}
.cat-head-grid{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:40px;align-items:center;margin-top:24px;
}
.cat-head-text{padding-bottom:48px}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;font-size:13px;
  background:var(--c-primary-100);color:var(--c-primary);font-weight:600;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent)}
.cat-head-text h1{
  font-size:44px;margin:18px 0 16px;color:var(--c-text);
}
.cat-head-text .lead{font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:600px}
.head-metrics{display:flex;gap:36px;margin-top:28px;flex-wrap:wrap}
.metric .metric-num{font-size:28px;font-weight:600;color:var(--c-spark);line-height:1.2}
.metric .metric-label{font-size:13px;color:var(--c-text-3);margin-top:2px}
.head-visual{
  aspect-ratio:16/10;border-radius:var(--radius-hero);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--shadow-lg);
  background:var(--c-surface-2);
}
.head-visual img{width:100%;height:100%;object-fit:cover}

/* ============ 主体两栏布局 ============ */
.cat-body{padding:var(--section-gap) 0 0}
.cat-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.side-nav{
  position:sticky;top:88px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);
}
.side-nav h2{font-size:13px;font-weight:600;color:var(--c-text-3);letter-spacing:.04em;margin-bottom:12px}
.side-nav ul{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:block;font-size:14px;color:var(--c-text-2);
  padding:9px 12px;border-radius:8px;border-left:2px solid transparent;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.side-nav a:hover{background:var(--c-surface-2);color:var(--c-primary);border-left-color:var(--c-primary-100)}
.side-nav a.is-current{background:var(--c-primary-100);color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary)}
.side-note{
  margin-top:18px;padding:16px;border-radius:12px;
  background:var(--c-surface-2);font-size:13px;line-height:1.75;color:var(--c-text-2);
}
.side-note strong{color:var(--c-text);display:block;margin-bottom:6px;font-size:13px}

.content-area{min-width:0}
.section-head{margin-bottom:36px}
.section-head .eyebrow{font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.06em}
.section-head h2{font-size:32px;margin:10px 0 14px}
.section-head p{font-size:16px;color:var(--c-text-2);max-width:720px}

/* 图文交错行 */
.row-list{border-top:1px solid var(--c-line)}
.row-item{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;
  padding:44px 0;border-bottom:1px solid var(--c-line);
}
.row-item.flip{grid-template-columns:300px minmax(0,1fr)}
.row-item.flip .row-text{order:2}
.row-item.flip .row-media{order:1}
.row-index{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;color:var(--c-spark);margin-bottom:10px;
}
.row-index i{
  display:inline-block;width:22px;height:2px;background:var(--c-spark);border-radius:2px;
}
.row-text h3{font-size:20px;margin-bottom:12px}
.row-text p{font-size:16px;color:var(--c-text-2);margin-bottom:14px}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--c-text-2);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--c-primary-100);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:13px;width:6px;height:3px;
  border-left:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transform:rotate(-45deg);
}
.row-media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow-sm)}
.row-media{aspect-ratio:4/3;background:var(--c-surface-2)}
.row-media img{width:100%;height:100%;object-fit:cover}

/* 连接轨道步骤条 */
.track-wrap{margin-top:24px}
.track{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;align-items:start}
.track-step{position:relative;padding:34px 22px 26px;background:var(--c-surface);border-radius:var(--radius-card);border:1px solid var(--c-line);box-shadow:var(--shadow-sm)}
.track-step.is-first{border:2px solid var(--c-primary);padding-top:38px;padding-bottom:32px}
.track-step + .track-step{margin-left:32px}
.track-step + .track-step::before{
  content:"";position:absolute;left:-32px;top:44px;width:32px;
  border-top:1px dashed var(--c-line-strong);
}
.track-num{
  position:absolute;top:-22px;left:22px;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;background:var(--c-primary);color:#fff;
  box-shadow:var(--shadow-sm);
}
.track-step:not(.is-first) .track-num{background:var(--c-surface);color:var(--c-primary);border:1px solid var(--c-line-strong)}
.track-step h3{font-size:18px;margin-bottom:10px}
.track-step p{font-size:15px;color:var(--c-text-2)}
.track-step .tag-row{margin-top:14px;display:flex;gap:8px;flex-wrap:wrap}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;background:var(--c-surface-2);color:var(--c-text-2);border:1px solid var(--c-line);
}
.tag.accent{background:rgba(18,179,155,.10);color:#0E8D7B;border-color:rgba(18,179,155,.25)}

/* 说明卡片组（非等高，非对称） */
.mix-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:24px;margin-top:24px}
.mix-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm);transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease)}
.mix-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--c-line-strong)}
.mix-card h3{font-size:18px;margin-bottom:10px}
.mix-card p{font-size:15px;color:var(--c-text-2)}
.mix-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.mix-card li{font-size:14px;color:var(--c-text-2);padding-left:14px;position:relative}
.mix-card li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--c-primary)}
.mix-col{display:flex;flex-direction:column;gap:24px}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:24px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item.is-open{border-left:3px solid var(--c-primary);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-text);
  min-height:64px;transition:background-color var(--ease),color var(--ease);
}
.faq-q:hover{background:var(--c-surface-2)}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-arrow{flex:0 0 auto;width:18px;height:18px;transition:transform var(--ease);color:var(--c-text-3)}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2)}

/* CTA */
.cta-block{
  margin-top:var(--section-gap);
  background:linear-gradient(135deg,var(--c-primary-100) 0%,#FFFFFF 100%);
  border:1px solid var(--c-line);border-radius:var(--radius-hero);
  padding:48px;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:48px;
  box-shadow:var(--shadow-sm);
}
.cta-block h2{font-size:32px;margin-bottom:14px}
.cta-block .cta-lead{font-size:16px;color:var(--c-text-2);margin-bottom:20px;max-width:520px}
.cta-points{display:flex;flex-direction:column;gap:10px}
.cta-points li{font-size:15px;color:var(--c-text-2);padding-left:24px;position:relative}
.cta-points li::before{
  content:"";position:absolute;left:0;top:8px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid var(--c-accent);
}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-md)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-text-2);margin-bottom:6px}
.field input,.field select{
  width:100%;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid var(--c-line-strong);background:var(--c-surface);outline:none;
  font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field input:focus,.field select:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12)}
.field.has-error input{border-color:var(--c-danger)}
.field .err{display:none;font-size:13px;color:var(--c-danger);margin-top:6px}
.field.has-error .err{display:block}
.form-note{font-size:12px;color:var(--c-text-3);margin-top:12px;line-height:1.7}
.form-success{
  display:none;margin-top:14px;padding:12px 14px;border-radius:10px;
  background:rgba(18,179,155,.10);border:1px solid rgba(18,179,155,.3);
  color:#0E8D7B;font-size:14px;
}
.form-success.is-show{display:block}

/* 页脚 */
.site-footer{
  margin-top:var(--section-gap);
  background:var(--c-bg);
  border-top:1px solid var(--c-line);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:30px;height:30px;font-size:15px;border-radius:9px}
.footer-brand .brand-text{font-size:15px;font-weight:600;color:var(--c-text)}
.footer-desc{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--c-text-2);display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-links a:hover{color:var(--c-primary);transform:translateX(-2px)}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact li{font-size:14px;color:var(--c-text-2)}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}

/* 动效 */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms cubic-bezier(.2,.7,.3,1),transform 420ms cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* 响应式 */
@media (max-width:1279px){
  .main-nav{gap:2px}
  .command-search{width:200px}
}
@media (max-width:1023px){
  .header-inner{gap:16px}
  .main-nav,.command-search,.quick-link{display:none}
  .menu-toggle{display:inline-flex}
  .brand-text{font-size:14px}
  .cat-head-grid{grid-template-columns:1fr;gap:28px}
  .cat-head-text{padding-bottom:8px}
  .cat-head-text h1{font-size:34px}
  .head-visual{order:-1}
  .cat-layout{grid-template-columns:1fr;gap:32px}
  .side-nav{position:static}
  .side-nav ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .side-nav a{border-left:0;border:1px solid var(--c-line);border-radius:999px;padding:7px 14px;font-size:13px}
  .side-nav a.is-current{border-color:var(--c-primary)}
  .row-item,.row-item.flip{grid-template-columns:1fr;gap:24px}
  .row-item.flip .row-text,.row-item.flip .row-media{order:initial}
  .mix-grid{grid-template-columns:1fr}
  .cta-block{grid-template-columns:1fr;gap:32px;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  :root{--section-gap:56px}
  .cat-body{padding-top:56px}
  .cat-head-text h1{font-size:28px}
  .cat-head-text .lead{font-size:16px}
  .section-head h2{font-size:24px}
  .track{grid-template-columns:1fr}
  .track-step + .track-step{margin-left:0;margin-top:28px}
  .track-step + .track-step::before{
    left:44px;top:-28px;width:0;height:28px;border-top:0;border-left:1px dashed var(--c-line-strong);
  }
  .head-metrics{gap:24px}
  .metric .metric-num{font-size:24px}
  .btn{width:100%}
  .cta-block{padding:24px}
  .cta-block h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .cat-head-text h1{font-size:26px}
  .section-head h2{font-size:22px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
  .mix-card,.form-card{padding:16px}
  .row-item{padding:32px 0}
}

/* roulang page: category2 */
:root{
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF3FB;
  --c-line:#E3E9F2;
  --c-line-strong:#D3DCEC;
  --c-text:#0F1B2D;
  --c-text-2:#56678A;
  --c-text-3:#8A99B3;
  --c-primary:#2160E6;
  --c-primary-dark:#1747B0;
  --c-primary-100:#E7EFFE;
  --c-accent:#12B39B;
  --c-spark:#FF7A45;
  --c-danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-hero:20px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.06);
  --shadow-md:0 6px 20px rgba(16,32,64,.08);
  --shadow-lg:0 16px 40px rgba(16,32,64,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,#2160E6,#1747B0);
  color:#fff;font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:15px;font-weight:600;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:6px}
.nav-link{
  position:relative;font-size:14px;color:var(--c-text-2);
  padding:8px 12px;border-radius:8px;white-space:nowrap;transition:var(--t);
}
.nav-link:hover{background:var(--c-primary-100);color:var(--c-primary-dark)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-14px;
  height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:36px;padding:0 8px 0 10px;
  background:var(--c-surface-2);border:1px solid var(--c-line);
  border-radius:var(--r-btn);transition:var(--t);
}
.command-search:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12)}
.command-search svg{flex:0 0 auto;color:var(--c-text-3)}
.command-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:13px;color:var(--c-text);
}
.command-search input::placeholder{color:var(--c-text-3)}
.command-search .kbd{
  flex:0 0 auto;font-size:11px;color:var(--c-text-3);
  border:1px solid var(--c-line-strong);border-radius:5px;
  padding:1px 5px;background:#fff;line-height:1.5;
}
.nav-quick{font-size:14px;color:var(--c-text-2);transition:var(--t)}
.nav-quick:hover{color:var(--c-primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 18px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;cursor:pointer;transition:var(--t);
}
.btn-sm{height:36px;padding:0 16px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-ghost{background:#fff;color:var(--c-text);border-color:var(--c-line-strong)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.text-link{font-size:14px;font-weight:600;color:var(--c-primary);transition:var(--t)}
.text-link:hover{color:var(--c-primary-dark)}
.hamburger{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);cursor:pointer;transition:var(--t);
}
.hamburger:hover{border-color:var(--c-primary)}
.hamburger span{position:relative;display:block;width:16px;height:2px;background:var(--c-text);border-radius:2px}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-text);border-radius:2px;
}
.hamburger span::before{top:-5px}
.hamburger span::after{top:5px}

/* Drawer */
.drawer-overlay{
  position:fixed;inset:0;z-index:60;background:rgba(15,27,45,.4);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:70;height:100%;width:320px;max-width:86vw;
  background:#fff;box-shadow:var(--shadow-lg);padding:20px;
  display:flex;flex-direction:column;gap:16px;overflow-y:auto;
  transform:translateX(101%);transition:transform 240ms var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--c-line);background:#fff;
  border-radius:var(--r-btn);cursor:pointer;font-size:18px;line-height:1;color:var(--c-text-2);
}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-btn);font-size:15px;
  color:var(--c-text-2);border:1px solid transparent;transition:var(--t);
}
.drawer-nav a:hover{background:var(--c-surface-2);color:var(--c-primary)}
.drawer-nav a.is-active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface-2);
}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}

/* Sections */
.section{padding:var(--sp-section) 0}
.section-tight{padding:48px 0 0}
.section-head{max-width:760px}
.section-head h2{font-size:clamp(24px,2.8vw,32px)}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-text-2)}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-100);border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:16px;
}

/* Page hero */
.page-hero{
  padding:44px 0 8px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--c-text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--c-text-2);transition:var(--t)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-primary)}
.page-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.status-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-primary-dark);
  background:var(--c-primary-100);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:18px;
}
.status-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent)}
.page-hero h1{font-size:clamp(26px,3.6vw,40px);max-width:18em}
.page-hero .lead{margin-top:18px;font-size:17px;color:var(--c-text-2);max-width:34em}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-figure{
  position:relative;border-radius:var(--r-hero);overflow:hidden;
  aspect-ratio:16/10;box-shadow:var(--shadow-md);background:var(--c-surface-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}

/* Segment bar + layout */
.segment-bar{
  display:flex;gap:28px;margin-top:36px;
  border-bottom:1px solid var(--c-line);overflow-x:auto;scrollbar-width:none;
}
.segment-bar::-webkit-scrollbar{display:none}
.segment{
  position:relative;background:none;border:0;padding:0 0 14px;
  font-size:15px;color:var(--c-text-2);cursor:pointer;white-space:nowrap;transition:var(--t);
}
.segment:hover{color:var(--c-text)}
.segment.is-active{color:var(--c-primary);font-weight:600}
.segment.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.layout-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:32px;align-items:start;margin-top:36px;
}
.card-flow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.entry-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);transition:var(--t);
}
.entry-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--c-line-strong)}
.entry-card.is-hidden{display:none}
.entry-top{display:flex;align-items:center;gap:10px}
.entry-icon{
  width:40px;height:40px;flex:0 0 auto;border-radius:12px;
  background:var(--c-primary-100);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.entry-tag{
  font-size:12px;color:var(--c-accent);background:rgba(18,179,155,.1);
  border-radius:var(--r-pill);padding:3px 10px;
}
.entry-card h3{font-size:18px}
.entry-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.85}
.entry-list{margin-top:2px}
.entry-list li{
  position:relative;padding-left:16px;font-size:14px;
  color:var(--c-text-2);line-height:1.9;
}
.entry-list li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;
  background:#fff;border:1px solid var(--c-primary);
}
.entry-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);transition:var(--t)}
.entry-link:hover{color:var(--c-primary-dark)}

/* Sidebar */
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-sm);
}
.side-card h2,.side-card h3{font-size:16px}
.side-rows{margin-top:14px}
.side-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding:10px 0;border-bottom:1px dashed var(--c-line);font-size:13.5px;
}
.side-row:last-child{border-bottom:0}
.side-row dt{color:var(--c-text-3);flex:0 0 auto}
.side-row dd{margin:0;color:var(--c-text);text-align:right;font-weight:500}
.side-card--accent{background:linear-gradient(135deg,var(--c-primary-100),#FFFFFF)}
.side-card--accent p{margin-top:12px;font-size:13.5px;color:var(--c-text-2);line-height:1.85}
.side-card--accent .btn{margin-top:16px}
.side-link{display:block;margin-top:12px;font-size:14px;font-weight:600;color:var(--c-primary)}
.side-link:hover{color:var(--c-primary-dark)}

/* Steps */
.steps{
  position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;margin-top:56px;
}
.steps::before{
  content:"";position:absolute;left:22px;right:22px;top:-22px;height:0;
  border-top:1px dashed var(--c-line-strong);
}
.step{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:34px 22px 22px;box-shadow:var(--shadow-sm);transition:var(--t);
}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.step:first-child{border:2px solid var(--c-primary);padding-bottom:30px}
.step-num{
  position:absolute;top:-22px;left:22px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);
}
.step h3{font-size:18px}
.step p{margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.85}
.step-meta{
  display:inline-block;margin-top:14px;font-size:12px;color:var(--c-spark);
  background:rgba(255,122,69,.1);border-radius:var(--r-pill);padding:3px 10px;
}

/* Proof */
.proof-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;margin-top:40px}
.proof-main{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:20px;
}
.proof-figure{
  border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:var(--c-surface-2);
}
.proof-figure img{width:100%;height:100%;object-fit:cover}
.proof-main h3{font-size:18px}
.proof-main p{font-size:14.5px;color:var(--c-text-2)}
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:4px}
.stat{background:var(--c-surface-2);border-radius:var(--r-img);padding:16px}
.stat strong{display:block;font-size:28px;font-weight:600;color:var(--c-primary);line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--c-text-3)}
.proof-side{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px;
}
.quote-mark{font-size:34px;line-height:1;color:var(--c-primary-100);font-weight:700}
.proof-side p{font-size:14.5px;color:var(--c-text-2);line-height:1.9}
.proof-side .who{font-size:13px;color:var(--c-text-3);margin-top:auto}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:32px;max-width:960px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:12px;overflow:hidden;transition:var(--t);
}
.faq-item.is-open{border-left:3px solid var(--c-primary)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;transition:var(--t);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{flex:0 0 auto;color:var(--c-text-3);transition:transform var(--t),color var(--t)}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{display:none;padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:60em}
.faq-item.is-open .faq-a{display:block}

/* CTA */
.cta-card{
  background:linear-gradient(135deg,var(--c-primary-100),#FFFFFF);
  border:1px solid var(--c-line);border-radius:var(--r-hero);
  padding:40px;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.cta-card h2{font-size:clamp(22px,2.6vw,30px)}
.cta-card > div > p{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:34em}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-points li{position:relative;padding-left:22px;font-size:14.5px;color:var(--c-text-2)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:10px;height:10px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-accent);
}
.cta-form{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:6px}
.field input,.field select{
  width:100%;height:44px;padding:0 12px;background:#fff;
  border:1px solid var(--c-line-strong);border-radius:var(--r-btn);
  font-size:14px;transition:var(--t);
}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(33,96,230,.12)}
.field.has-error input,.field.has-error select{border-color:var(--c-danger)}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--c-danger)}
.field.has-error .err{display:block}
.form-note{margin-top:12px;font-size:13px;color:var(--c-text-3);line-height:1.7}
.form-success{display:none;margin-top:14px;font-size:13.5px;color:var(--c-accent)}
.form-success.is-visible{display:block}

/* Footer */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:var(--sp-section)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-title{font-size:14px;font-weight:600;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--c-text-2);line-height:1.85;max-width:320px}
.footer-links li{margin-bottom:10px}
.footer-links a{display:inline-block;font-size:14px;color:var(--c-text-2);transition:var(--t)}
.footer-links a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--c-text-2);margin-bottom:10px;line-height:1.7}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-line);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-text-3);
}

/* Reveal */
.js .reveal{opacity:0;transform:translateY(8px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* Responsive */
@media (max-width:1279px){
  .layout-grid{grid-template-columns:1fr}
  .side-stack{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
}
@media (max-width:1023px){
  :root{--sp-section:72px}
  .main-nav,.nav-quick,.command-search{display:none}
  .hamburger{display:flex}
  .page-hero{padding-top:32px}
  .page-hero-grid{grid-template-columns:1fr;gap:28px}
  .card-flow{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps::before{display:none}
  .proof-grid{grid-template-columns:1fr}
  .cta-card{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  body{font-size:16px}
  .nav-inner{height:56px;gap:12px}
  .brand-text{font-size:14px}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr;gap:32px}
  .steps::before{display:block;left:22px;top:0;right:auto;bottom:0;width:0;height:auto;border-top:0;border-left:1px dashed var(--c-line-strong)}
  .stat-row{grid-template-columns:1fr}
  .side-stack{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a{padding:0 18px 18px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .page-hero h1{font-size:25px}
  .section-head h2{font-size:22px}
  .entry-card,.side-card,.proof-main,.proof-side,.cta-form{padding:16px}
  .cta-card{padding:20px}
  .brand-text{font-size:13.5px}
}