/* roulang page: index */
:root{
  --brand:#1E63C8;
  --brand-dark:#164E9E;
  --brand-light:#EAF2FD;
  --brand-soft:#F4F8FE;
  --green:#12A38F;
  --orange:#F2813C;
  --ink:#12181F;
  --text:#3C4652;
  --muted:#6B7787;
  --line:#E4E9F0;
  --line-soft:#E9EEF5;
  --field:#CBD8EA;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --footer-bg:#102A44;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,24,31,.04),0 1px 3px rgba(18,24,31,.06);
  --shadow-2:0 6px 20px rgba(30,99,200,.08);
  --shadow-3:0 12px 28px rgba(30,99,200,.14);
  --container:1200px;
  --sec-space:96px;
}
@media (min-width:1440px){ :root{ --container:1280px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:var(--brand); text-decoration:none; transition:color .2s ease,border-color .2s ease,background-color .2s ease; }
a:hover{ color:var(--brand-dark); }
button{ font-family:inherit; }
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
ul{ padding-left:1.1em; }
input,select,textarea{ font-family:inherit; font-size:15px; }
:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; }
.container{ width:100%; max-width:var(--container); margin:0 auto; padding:0 24px; }
.skip-link{ position:absolute; left:-9999px; top:0; background:#fff; padding:10px 16px; border-radius:8px; z-index:2000; }
.skip-link:focus{ left:16px; top:16px; }

/* ---------- 栅格微调 ---------- */
.grid-gap-24{ margin-left:-12px; margin-right:-12px; }
.grid-gap-24 > .cell{ padding-left:12px; padding-right:12px; }
.grid-gap-16{ margin-left:-8px; margin-right:-8px; }
.grid-gap-16 > .cell{ padding-left:8px; padding-right:8px; }

/* ---------- 通用文本 ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; letter-spacing:.08em; color:var(--brand);
  background:var(--brand-light); border-radius:var(--radius-pill);
  padding:6px 14px; font-weight:600;
}
.section{ padding:var(--sec-space) 0; }
.section--soft{ background:#fff; }
.section-head{ margin-bottom:40px; }
.section-head--split{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.section-title{
  position:relative;
  font-size:28px; font-weight:650; line-height:1.35; color:var(--ink);
  padding-left:16px;
}
.section-title::before{
  content:""; position:absolute; left:0; top:.18em; bottom:.18em;
  width:4px; border-radius:2px; background:var(--brand);
}
.section-desc{ margin-top:14px; font-size:15px; color:var(--muted); max-width:720px; }
.num-mono{ font-variant-numeric:tabular-nums; font-family:Inter,system-ui,-apple-system,"PingFang SC",sans-serif; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border-radius:var(--radius-btn); border:1.5px solid transparent;
  font-size:15px; font-weight:600; line-height:1;
  padding:14px 28px; cursor:pointer;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-sm{ padding:10px 20px; font-size:14px; }
.btn-primary{ background:var(--brand); color:#fff; border-color:var(--brand); }
.btn-primary:hover{ background:var(--brand-dark); border-color:var(--brand-dark); color:#fff; transform:translateY(-2px); box-shadow:var(--shadow-2); }
.btn-primary:active{ transform:translateY(0); box-shadow:none; }
.btn-accent{ background:var(--orange); color:#fff; border-color:var(--orange); }
.btn-accent:hover{ background:#DD6C29; border-color:#DD6C29; color:#fff; transform:translateY(-2px); box-shadow:var(--shadow-2); }
.btn-accent:active{ transform:translateY(0); box-shadow:none; }
.btn-ghost{ background:#fff; color:var(--brand); border-color:var(--field); }
.btn-ghost:hover{ background:var(--brand-soft); border-color:var(--brand); color:var(--brand-dark); transform:translateY(-2px); box-shadow:var(--shadow-2); }
.btn-ghost:active{ transform:translateY(0); box-shadow:none; }
.link-arrow{
  display:inline-flex; align-items:center; gap:6px;
  font-size:14px; font-weight:600; color:var(--brand);
  border-bottom:1.5px solid transparent;
}
.link-arrow:hover{ color:var(--brand-dark); border-bottom-color:var(--brand-dark); }
.link-arrow span{ transition:transform .2s ease; }
.link-arrow:hover span{ transform:translateX(3px); }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:1000;
  background:#fff; border-bottom:1px solid var(--line-soft);
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{ box-shadow:0 4px 16px rgba(18,24,31,.08); }
.header-inner{ display:flex; align-items:center; gap:28px; height:72px; }
.logo{ display:inline-flex; align-items:center; gap:10px; color:var(--ink); flex:0 0 auto; }
.logo:hover{ color:var(--brand); }
.logo-mark{ display:inline-flex; width:30px; height:30px; color:var(--brand); }
.logo-mark svg{ width:100%; height:100%; }
.logo-text{ font-size:19px; font-weight:700; letter-spacing:-.01em; white-space:nowrap; }
.main-nav{ display:flex; align-items:center; gap:28px; margin-left:8px; }
.nav-link{
  position:relative; font-size:15px; font-weight:500; color:var(--text);
  padding:24px 6px; border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{ color:var(--brand); background:var(--brand-soft); }
.nav-link.is-active{ color:var(--brand); font-weight:600; }
.nav-link.is-active::after{
  content:""; position:absolute; left:6px; right:6px; bottom:14px;
  height:2px; border-radius:2px; background:var(--brand);
}
.header-actions{ display:flex; align-items:center; gap:14px; margin-left:auto; }
.search-box{
  position:relative; display:flex; align-items:center;
  width:240px; height:40px; border:1.5px solid var(--field);
  border-radius:var(--radius-pill); background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{ border-color:var(--brand); box-shadow:0 0 0 3px rgba(30,99,200,.14); }
.search-box svg{ width:16px; height:16px; margin:0 8px 0 14px; color:var(--muted); flex:0 0 auto; }
.search-box input{
  flex:1 1 auto; min-width:0; height:100%; border:0; background:transparent;
  font-size:14px; color:var(--ink); padding:0 14px 0 0;
}
.search-box input:focus{ outline:none; }
.nav-toggle{
  display:none; width:42px; height:42px; border:1.5px solid var(--field);
  border-radius:10px; background:#fff; cursor:pointer;
  flex-direction:column; align-items:center; justify-content:center; gap:4px;
}
.nav-toggle span{ display:block; width:18px; height:2px; border-radius:2px; background:var(--ink); transition:background-color .2s ease; }
.nav-toggle:hover{ border-color:var(--brand); }

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed; inset:0; background:rgba(18,24,31,.42); z-index:1100;
  opacity:0; visibility:hidden; transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{ opacity:1; visibility:visible; }
.drawer{
  position:fixed; top:0; right:0; bottom:0; width:320px; max-width:88vw; z-index:1200;
  background:#fff; box-shadow:var(--shadow-3);
  transform:translateX(100%); transition:transform .28s ease;
  padding:24px; overflow-y:auto;
}
.drawer.is-open{ transform:translateX(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:22px; }
.drawer-title{ font-size:16px; font-weight:700; color:var(--ink); }
.drawer-close{ width:36px; height:36px; border-radius:10px; border:1.5px solid var(--field); background:#fff; cursor:pointer; color:var(--ink); font-size:18px; line-height:1; }
.drawer-close:hover{ border-color:var(--brand); color:var(--brand); }
.drawer-nav{ display:flex; flex-direction:column; gap:4px; margin:18px 0 22px; }
.drawer-nav a{ font-size:15px; font-weight:500; color:var(--text); padding:12px 14px; border-radius:10px; }
.drawer-nav a:hover{ background:var(--brand-soft); color:var(--brand); }
.drawer-nav a.is-active{ background:var(--brand-light); color:var(--brand); font-weight:600; }
.drawer-search{ display:flex; align-items:center; height:44px; border:1.5px solid var(--field); border-radius:var(--radius-pill); margin-bottom:18px; }
.drawer-search input{ flex:1 1 auto; min-width:0; border:0; background:transparent; height:100%; padding:0 16px; font-size:14px; }
.drawer-search input:focus{ outline:none; }
.drawer-cta{ width:100%; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(160deg,#F2F7FE 0%,#FFFFFF 240px);
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
  overflow:hidden;
}
.hero::after{
  content:""; position:absolute; right:-60px; top:-40px; width:420px; height:260px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover; background-position:center;
  opacity:.06; pointer-events:none;
}
.hero-grid{ align-items:center; position:relative; z-index:1; }
.hero-title{
  font-size:42px; font-weight:700; line-height:1.25; letter-spacing:-.01em; color:var(--ink);
}
.hero-title em{ font-style:normal; color:var(--brand); }
.hero-sub{ margin-top:20px; font-size:17px; line-height:1.85; color:var(--text); max-width:560px; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:14px; margin-top:32px; }
.trust-list{ display:flex; flex-wrap:wrap; gap:12px 26px; margin-top:28px; padding:0; list-style:none; }
.trust-item{ display:inline-flex; align-items:center; gap:8px; font-size:14px; color:var(--text); }
.trust-item svg{ width:18px; height:18px; color:var(--green); flex:0 0 auto; }
.hero-media{ position:relative; }
.hero-media img{
  width:100%; aspect-ratio:16/10; object-fit:cover;
  border-radius:16px; box-shadow:var(--shadow-2); background:#F2F5F9;
}
.hero-media::after{
  content:""; position:absolute; inset:0; border-radius:16px;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover; opacity:.06; pointer-events:none;
}

/* ---------- 卖点 ---------- */
.value-card{
  display:flex; flex-direction:column; height:100%;
  background:var(--card); border:1px solid var(--line-soft);
  border-radius:var(--radius-card); box-shadow:var(--shadow-1);
  padding:28px; transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.value-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-3); border-color:var(--brand-light); }
.value-index{ font-size:13px; font-weight:700; letter-spacing:.12em; color:var(--brand); }
.value-title{ margin-top:12px; font-size:20px; font-weight:600; color:var(--ink); line-height:1.4; }
.value-text{ margin-top:12px; font-size:15px; line-height:1.85; color:var(--text); }
.value-foot{ margin-top:auto; padding-top:20px; }
.value-card--wide{ display:grid; grid-template-columns:1.4fr 1fr; gap:24px; align-items:center; }
.value-card--wide .value-media img{
  width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:var(--radius-img);
}
.value-wide-body{ display:flex; flex-direction:column; height:100%; }

/* ---------- 场景 ---------- */
.scene-row{ align-items:center; margin-bottom:56px; }
.scene-row:last-child{ margin-bottom:0; }
.scene-media img{
  width:100%; aspect-ratio:4/3; object-fit:cover;
  border-radius:var(--radius-img); box-shadow:var(--shadow-2); background:#F2F5F9;
}
.scene-title{ font-size:21px; font-weight:600; color:var(--ink); line-height:1.45; }
.scene-body p{ margin-top:14px; font-size:16px; line-height:1.9; color:var(--text); max-width:640px; }
.check-list{ list-style:none; padding:0; margin:20px 0 0; display:grid; gap:10px; }
.check-list li{ display:flex; gap:10px; align-items:flex-start; font-size:15px; color:var(--text); }
.check-list li svg{ width:18px; height:18px; color:var(--green); flex:0 0 auto; margin-top:5px; }
.scene-body .link-arrow{ margin-top:20px; }

/* ---------- 资讯卡 ---------- */
.news-card{
  display:flex; flex-direction:column; height:100%;
  background:var(--card); border:1px solid var(--line-soft);
  border-radius:var(--radius-card); box-shadow:var(--shadow-1);
  padding:24px; transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-3); border-color:var(--brand-light); }
.news-card__meta{ display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:14px; }
.tag{
  display:inline-flex; align-items:center;
  font-size:12px; font-weight:600; letter-spacing:.02em;
  color:#0C7C6C; background:rgba(18,163,143,.12);
  border-radius:var(--radius-pill); padding:4px 12px;
}
.news-card time{ font-size:13px; color:var(--muted); }
.news-card__title{ font-size:18px; font-weight:600; line-height:1.5; color:var(--ink); }
.news-card__title a{ color:inherit; }
.news-card__title a:hover{ color:var(--brand); }
.news-card__desc{
  margin-top:12px; font-size:14px; line-height:1.8; color:var(--muted);
  display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden;
}
.news-card .link-arrow{ margin-top:auto; padding-top:20px; }
.empty-state{
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:14px; min-height:220px; text-align:center;
  background:#fff; border:1px dashed var(--field); border-radius:var(--radius-card);
}
.empty-state svg{ width:32px; height:32px; color:var(--brand); }
.empty-state p{ font-size:15px; color:var(--muted); }
.empty-state .btn{ margin-top:4px; }

/* ---------- 数据条 ---------- */
.stats-band{
  background:#fff; border:1px solid var(--line-soft);
  border-radius:var(--radius-card); box-shadow:var(--shadow-1);
  padding:40px 24px;
}
.stat-item{ text-align:center; position:relative; }
.stat-item + .stat-item::before{
  content:""; position:absolute; left:0; top:12%; bottom:12%; width:1px; background:var(--line);
}
.stat-num{ font-size:44px; font-weight:700; line-height:1.1; color:var(--brand); letter-spacing:-.02em; white-space:nowrap; }
.stat-num small{ font-size:18px; font-weight:600; margin-left:2px; }
.stat-label{ margin-top:8px; font-size:14px; color:var(--muted); }
.stats-note{ margin-top:26px; text-align:center; font-size:14px; color:var(--muted); }

/* ---------- FAQ ---------- */
.faq-wrap{ max-width:880px; margin:0 auto; }
.faq-item{ background:#fff; border-bottom:1px solid var(--line); }
.faq-item:first-child{ border-top-left-radius:var(--radius-card); border-top-right-radius:var(--radius-card); }
.faq-item:last-child{ border-bottom:0; border-bottom-left-radius:var(--radius-card); border-bottom-right-radius:var(--radius-card); }
.faq-list{ background:#fff; border:1px solid var(--line-soft); border-radius:var(--radius-card); box-shadow:var(--shadow-1); overflow:hidden; }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:18px;
  background:transparent; border:0; text-align:left; cursor:pointer;
  padding:22px 24px; font-size:17px; font-weight:600; color:var(--ink); line-height:1.6;
}
.faq-q:hover{ color:var(--brand); }
.faq-icon{
  flex:0 0 auto; width:26px; height:26px; border-radius:50%;
  border:1.5px solid var(--field); color:var(--brand);
  display:inline-flex; align-items:center; justify-content:center;
  font-size:16px; line-height:1; transition:transform .25s ease,border-color .2s ease;
}
.faq-item.is-open .faq-icon{ transform:rotate(45deg); border-color:var(--brand); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .2s ease; }
.faq-a p{ padding:0 24px 22px; font-size:15px; line-height:1.85; color:var(--text); max-width:760px; }

/* ---------- 收尾 CTA ---------- */
.cta-band{
  background:var(--brand-light); border-radius:16px;
  padding:64px 32px; text-align:center;
}
.cta-band h2{ font-size:28px; font-weight:650; color:var(--ink); line-height:1.4; }
.cta-band p{ margin:16px auto 0; max-width:640px; font-size:16px; color:var(--text); }
.cta-actions{ display:flex; justify-content:center; flex-wrap:wrap; gap:14px; margin-top:30px; }

/* ---------- 浮动转化条 ---------- */
.float-cta{
  position:fixed; right:24px; bottom:24px; z-index:900;
  width:320px; background:#fff; border:1px solid var(--line-soft);
  border-radius:16px; box-shadow:var(--shadow-3); padding:20px;
  opacity:0; visibility:hidden; transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-visible{ opacity:1; visibility:visible; transform:translateY(0); }
.float-cta__head{ display:flex; align-items:flex-start; justify-content:space-between; gap:12px; }
.float-cta__text{ font-size:14px; font-weight:600; color:var(--ink); line-height:1.6; }
.float-cta__close{
  flex:0 0 auto; width:26px; height:26px; border-radius:8px;
  border:1.5px solid var(--field); background:#fff; color:var(--muted);
  cursor:pointer; font-size:14px; line-height:1;
}
.float-cta__close:hover{ border-color:var(--brand); color:var(--brand); }
.float-cta__note{ margin-top:8px; font-size:13px; color:var(--muted); line-height:1.7; }
.float-cta .btn{ width:100%; margin-top:16px; }
.mobile-bar{
  display:none; position:fixed; left:0; right:0; bottom:0; z-index:900;
  height:64px; padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:#fff; border-top:1px solid var(--line-soft);
  box-shadow:0 -6px 20px rgba(18,24,31,.08); gap:12px;
}
.mobile-bar .btn{ flex:1 1 0; padding:12px 10px; font-size:15px; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--footer-bg); color:rgba(255,255,255,.72); padding:64px 0 0; margin-top:0; }
.footer-grid{ padding-bottom:44px; }
.footer-brand{ display:flex; align-items:center; gap:10px; color:#fff; font-size:18px; font-weight:700; }
.footer-brand svg{ width:26px; height:26px; color:#7FB2F0; }
.footer-desc{ margin-top:16px; font-size:14px; line-height:1.9; color:rgba(255,255,255,.72); max-width:340px; }
.footer-col h3{ font-size:15px; font-weight:600; color:#fff; margin-bottom:18px; }
.footer-col ul{ list-style:none; padding:0; margin:0; display:grid; gap:12px; }
.footer-col a{ color:rgba(255,255,255,.72); font-size:14px; border-bottom:2px solid transparent; }
.footer-col a:hover{ color:#fff; border-bottom-color:#fff; }
.footer-col li{ font-size:14px; color:rgba(255,255,255,.72); line-height:1.7; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14); padding:22px 0;
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:13px; color:rgba(255,255,255,.6);
}
.footer-bottom a{ color:rgba(255,255,255,.72); }
.footer-bottom a:hover{ color:#fff; border-bottom:2px solid #fff; }

/* ---------- 进场 ---------- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .5s ease,transform .5s ease; }
.reveal.is-in{ opacity:1; transform:none; }

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .search-box{ width:200px; }
  .hero-title{ font-size:38px; }
}
@media (max-width:1023px){
  :root{ --sec-space:72px; }
  .main-nav{ display:none; }
  .search-box{ display:none; }
  .nav-toggle{ display:flex; }
  .header-inner{ height:64px; gap:16px; }
  .hero{ padding:48px 0 44px; }
  .hero-title{ font-size:32px; }
  .hero-media{ margin-top:36px; }
  .value-card--wide{ grid-template-columns:1fr; }
  .stat-num{ font-size:36px; }
  .stat-item + .stat-item::before{ display:none; }
  .scene-row{ margin-bottom:44px; }
  .scene-media{ margin-bottom:24px; }
  .cta-band{ padding:48px 24px; }
}
@media (max-width:639px){
  :root{ --sec-space:56px; }
  .container{ padding:0 16px; }
  .header-actions .btn{ display:none; }
  .logo-text{ font-size:17px; }
  .hero{ padding:36px 0 34px; }
  .hero::after{ display:none; }
  .hero-title{ font-size:27px; }
  .hero-sub{ font-size:16px; }
  .hero-cta .btn{ width:100%; }
  .section-title{ font-size:23px; }
  .cta-band h2{ font-size:23px; }
  .float-cta{ display:none; }
  .mobile-bar{ display:flex; }
  body{ padding-bottom:calc(72px + env(safe-area-inset-bottom)); }
  .stats-band{ padding:32px 16px; }
  .stat-num{ font-size:32px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; }
}

/* roulang page: category1 */
:root{
  --c-primary:#1E63C8;
  --c-primary-dark:#164E9E;
  --c-primary-light:#EAF2FD;
  --c-green:#12A38F;
  --c-orange:#F2813C;
  --t-title:#12181F;
  --t-body:#3C4652;
  --t-muted:#6B7787;
  --line:#E4E9F0;
  --line-soft:#E9EEF5;
  --input-border:#CBD8EA;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --bg-soft:#F2F7FE;
  --bg-quote:#F4F8FE;
  --footer-bg:#102A44;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(18,24,31,.04),0 1px 3px rgba(18,24,31,.06);
  --sh2:0 6px 20px rgba(30,99,200,.08);
  --sh3:0 12px 28px rgba(30,99,200,.14);
  --sec:96px;
  --gap:24px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--t-body);
  background:var(--bg);
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color 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,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line-soft);
  box-shadow:var(--sh1);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(18,24,31,.08);}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--t-title);
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
}
.brand svg{width:28px;height:28px;color:var(--c-primary);flex-shrink:0;}
.brand:hover{color:var(--c-primary);}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  flex:1;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 10px;
  font-size:15px;
  color:var(--t-body);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-light);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:-8px;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.header-search{
  position:relative;
  display:flex;
  align-items:center;
  width:240px;
}
.header-search svg{
  position:absolute;
  left:14px;
  width:16px;
  height:16px;
  color:var(--t-muted);
  pointer-events:none;
}
.header-search input{
  width:100%;
  height:40px;
  padding:0 16px 0 38px;
  font-size:14px;
  border:1px solid var(--input-border);
  border-radius:var(--r-pill);
  background:#FBFCFE;
  color:var(--t-body);
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.header-search input::placeholder{color:var(--t-muted);}
.header-search input:focus{
  outline:none;
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,99,200,.14);
}
.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:10px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  color:var(--t-title);
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.menu-toggle svg{width:20px;height:20px;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:600;
  line-height:1;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;padding:14px 28px;font-size:16px;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-primary:active{transform:translateY(0);}
.btn-orange{background:var(--c-orange);color:#fff;padding:14px 28px;font-size:16px;}
.btn-orange:hover{background:#DC6E2C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-orange:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--input-border);padding:14px 28px;font-size:16px;}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--bg-quote);color:var(--c-primary-dark);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.link-cta::after{content:"→";transition:transform var(--ease);}
.link-cta:hover{color:var(--c-primary-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.link-cta:hover::after{transform:translateX(3px);}

/* ============ Hero-lite ============ */
.hero-lite{
  background:linear-gradient(160deg,#F2F7FE 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--t-muted);
  margin-bottom:22px;
}
.crumbs a{color:var(--t-muted);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:#C3CDDA;}
.crumbs .now{color:var(--c-primary);font-weight:600;}
.hero-grid{display:flex;align-items:center;gap:56px;}
.hero-copy{flex:1 1 58%;min-width:0;}
.hero-media{flex:1 1 42%;min-width:0;}
.hero-lite h1{
  font-size:40px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--t-title);
  margin-bottom:18px;
}
.hero-lite h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--t-body);
  max-width:640px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-media img{
  width:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh2);
  background:#F2F5F9;
}
.hero-media figcaption{
  margin-top:12px;
  font-size:13px;
  color:var(--t-muted);
  text-align:center;
}

/* ============ Section base ============ */
.section{padding:var(--sec) 0;}
.section-soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{
  position:relative;
  font-size:28px;
  font-weight:650;
  line-height:1.35;
  color:var(--t-title);
  padding-left:16px;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--c-primary);
}
.sec-head p{margin-top:12px;font-size:16px;color:var(--t-body);}

/* ============ Two column ============ */
.layout{display:flex;gap:48px;align-items:flex-start;}
.side-col{flex:0 0 264px;max-width:264px;position:sticky;top:96px;}
.content-col{flex:1 1 auto;min-width:0;}
.side-title{
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--t-muted);
  margin-bottom:14px;
  padding-left:2px;
}
.anchor-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  padding:10px;
}
.anchor-list a{
  position:relative;
  display:block;
  padding:10px 14px;
  font-size:14px;
  color:var(--t-body);
  border-radius:8px;
  border-left:3px solid transparent;
}
.anchor-list a:hover{background:var(--bg-quote);color:var(--c-primary);}
.anchor-list a.is-active{
  background:var(--c-primary-light);
  color:var(--c-primary);
  font-weight:600;
  border-left-color:var(--c-primary);
}

/* ============ Content blocks ============ */
.cblock{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  padding:32px;
  margin-bottom:24px;
  scroll-margin-top:96px;
}
.cblock h2{
  font-size:26px;
  font-weight:650;
  line-height:1.35;
  color:var(--t-title);
  margin-bottom:16px;
}
.cblock h3{
  font-size:20px;
  font-weight:600;
  color:var(--t-title);
  margin:24px 0 10px;
}
.cblock p{margin-bottom:14px;}
.cblock p:last-child{margin-bottom:0;}
.cblock-figure{margin:22px 0 4px;}
.cblock-figure img{
  width:100%;
  aspect-ratio:16 / 9;
  object-fit:cover;
  border-radius:var(--r-img);
  background:#F2F5F9;
}
.cblock-figure figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--t-muted);
  text-align:center;
}
.check-list{margin:8px 0 18px;}
.check-list li{
  position:relative;
  padding-left:28px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--t-body);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-green);
}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  font-size:12.5px;
  line-height:1.6;
  border-radius:var(--r-pill);
  background:var(--c-primary-light);
  color:var(--c-primary);
}
.tag-green{background:rgba(18,163,143,.1);color:#0E8574;}

/* ============ Related entries ============ */
.related-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  overflow:hidden;
}
.related-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 24px;
  font-size:15px;
  color:var(--t-body);
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease),color var(--ease),padding var(--ease);
}
.related-list a:last-child{border-bottom:0;}
.related-list a:hover{background:var(--bg-quote);color:var(--c-primary);padding-left:30px;}
.related-list .arrow{color:var(--c-primary);font-size:15px;flex-shrink:0;}
.related-list .rl-tag{
  font-size:12.5px;
  color:var(--t-muted);
  margin-left:12px;
}

/* ============ FAQ ============ */
.faq-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  text-align:left;
  padding:22px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--t-title);
  transition:color var(--ease),background-color var(--ease);
}
.faq-q:hover{color:var(--c-primary);background:#FBFCFE;}
.faq-icon{
  position:relative;
  flex-shrink:0;
  width:22px;
  height:22px;
  transition:transform var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--c-primary);
  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(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--t-body);
}

/* ============ CTA ============ */
.cta-band{
  background:var(--c-primary-light);
  border-radius:var(--r-card);
  padding:56px 40px;
  text-align:center;
}
.cta-band h2{
  font-size:28px;
  font-weight:650;
  color:var(--t-title);
  margin-bottom:12px;
}
.cta-band p{font-size:16px;color:var(--t-body);max-width:640px;margin:0 auto 26px;}
.cta-band .btn-row{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* ============ Float bar ============ */
.float-bar{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:90;
  width:320px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh3);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.float-bar.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-bar p{font-size:13px;line-height:1.5;color:var(--t-body);flex:1;margin:0;}
.float-close{
  position:absolute;
  top:6px;
  right:8px;
  width:24px;
  height:24px;
  font-size:16px;
  line-height:1;
  color:var(--t-muted);
  border-radius:50%;
}
.float-close:hover{color:var(--c-primary);background:var(--bg-quote);}

/* ============ Footer ============ */
.site-footer{
  background:var(--footer-bg);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  margin-top:var(--sec);
}
.footer-grid{gap:32px;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:19px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand svg{width:28px;height:28px;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:360px;}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:12px;font-size:14px;line-height:1.7;}
.footer-col ul li a{color:rgba(255,255,255,.72);}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  margin-top:48px;
  padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ============ Drawer ============ */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(18,24,31,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
  z-index:180;
}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:300px;
  max-width:86vw;
  background:#fff;
  z-index:190;
  padding:24px 22px;
  transform:translateX(100%);
  transition:transform 220ms ease-out;
  overflow-y:auto;
  box-shadow:var(--sh3);
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
body.drawer-open{overflow:hidden;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-head span{font-size:16px;font-weight:700;color:var(--t-title);}
.drawer-close{width:34px;height:34px;border-radius:10px;border:1px solid var(--line);color:var(--t-muted);}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer-search{position:relative;margin-bottom:22px;}
.drawer-search input{
  width:100%;
  height:44px;
  padding:0 16px;
  font-size:14px;
  border:1px solid var(--input-border);
  border-radius:var(--r-pill);
  background:#FBFCFE;
}
.drawer-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,99,200,.14);background:#fff;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px;}
.drawer-nav a{
  padding:12px 14px;
  font-size:15px;
  color:var(--t-body);
  border-radius:10px;
}
.drawer-nav a:hover{background:var(--bg-quote);color:var(--c-primary);}
.drawer-nav a.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 500ms ease-out,transform 500ms ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ Responsive ============ */
@media (max-width:1023px){
  :root{--sec:72px;}
  .header-inner{height:64px;gap:16px;}
  .main-nav,.header-search{display:none;}
  .menu-toggle{display:inline-flex;}
  .hero-grid{flex-direction:column;gap:32px;}
  .hero-lite h1{font-size:31px;}
  .hero-copy,.hero-media{flex:1 1 auto;width:100%;}
  .layout{flex-direction:column;gap:28px;}
  .side-col{position:static;max-width:none;flex:1 1 auto;width:100%;}
  .anchor-list{display:flex;gap:8px;overflow-x:auto;padding:8px;-webkit-overflow-scrolling:touch;}
  .anchor-list a{white-space:nowrap;border-left:0;border-bottom:3px solid transparent;border-radius:8px;}
  .anchor-list a.is-active{border-left:0;border-bottom-color:var(--c-primary);}
  .sec-head h2{font-size:25px;}
  .cblock{padding:26px;}
}
@media (max-width:639px){
  :root{--sec:56px;--gap:16px;}
  .container{padding:0 16px;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .brand{font-size:17px;}
  .brand svg{width:24px;height:24px;}
  .hero-lite{padding:32px 0 44px;}
  .hero-lite h1{font-size:27px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .cblock{padding:20px;}
  .cblock h2{font-size:22px;}
  .cblock h3{font-size:18px;}
  .cta-band{padding:40px 20px;}
  .cta-band h2{font-size:23px;}
  .float-bar{
    right:0;
    left:0;
    bottom:0;
    width:100%;
    border-radius:0;
    border-left:0;
    border-right:0;
    border-bottom:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    align-items:center;
    gap:10px;
  }
  .float-bar p{font-size:12.5px;}
  .float-close{top:4px;right:6px;width:20px;height:20px;font-size:14px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --blue:#1E63C8;
  --blue-dark:#164E9E;
  --blue-light:#EAF2FD;
  --green:#12A38F;
  --green-soft:#E6F6F2;
  --orange:#F2813C;
  --orange-dark:#DE6F2B;
  --ink:#12181F;
  --body:#3C4652;
  --muted:#6B7787;
  --line:#E4E9F0;
  --input:#CBD8EA;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --footer:#102A44;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(18,24,31,.04),0 1px 3px rgba(18,24,31,.06);
  --sh2:0 6px 20px rgba(30,99,200,.08);
  --sh3:0 12px 28px rgba(30,99,200,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:var(--body);background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}
a:hover{color:var(--blue-dark)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none}
input{font:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:1023px){.container{padding:0 20px}}
@media (max-width:639px){.container{padding:0 16px}}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1.5px solid transparent;border-radius:var(--r-btn);
  font-weight:600;line-height:1;white-space:nowrap;text-align:center;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--blue);color:#fff;padding:14px 28px;font-size:16px}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--orange);color:#fff;padding:14px 28px;font-size:16px}
.btn-accent:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--input);padding:14px 28px;font-size:16px}
.btn-ghost:hover{border-color:var(--blue);background:#F4F8FE;color:var(--blue)}
.btn-sm{padding:10px 20px;font-size:15px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--blue)}
.text-link svg{width:15px;height:15px;transition:transform .2s ease}
.text-link:hover{color:var(--blue-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
.text-link:hover svg{transform:translateX(3px)}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid #E9EEF5;box-shadow:var(--sh1);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.header-inner{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink)}
.brand svg{width:30px;height:30px;color:var(--blue);flex-shrink:0}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand:hover{color:var(--blue)}
.main-nav{display:flex;align-items:center;gap:4px;flex:1}
.nav-link{position:relative;padding:8px 12px;border-radius:8px;font-size:15px;font-weight:500;color:var(--body)}
.nav-link:hover{color:var(--blue);background:var(--blue-light)}
.nav-link.is-active{color:var(--blue);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;background:var(--blue);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:13px;width:16px;height:16px;color:var(--muted);pointer-events:none}
.search-box input{
  width:240px;height:40px;padding:0 16px 0 38px;
  border:1.5px solid var(--input);border-radius:var(--r-pill);
  background:#fff;color:var(--body);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--muted)}
.search-box input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,99,200,.14)}
.menu-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1.5px solid var(--input);border-radius:10px;background:#fff;color:var(--ink);
}
.menu-toggle:hover{border-color:var(--blue);color:var(--blue)}

/* ===== 移动抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,24,31,.42);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .28s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,344px);z-index:90;
  background:#fff;padding:22px;display:flex;flex-direction:column;gap:20px;
  transform:translateX(100%);transition:transform .28s ease-out;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink)}
.drawer-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;border:1.5px solid var(--input);color:var(--muted)}
.drawer-close:hover{border-color:var(--blue);color:var(--blue)}
.drawer-search{display:flex;gap:10px}
.drawer-search input{
  flex:1;height:46px;padding:0 16px;border:1.5px solid var(--input);
  border-radius:var(--r-btn);background:#fff;color:var(--body);font-size:15px;
}
.drawer-search input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,99,200,.14)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{padding:15px 4px;font-size:16px;color:var(--body);border-bottom:1px solid var(--line)}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--blue)}
.drawer-nav a.is-active{font-weight:600}

/* ===== 文章头部 ===== */
.article-hero{
  background:linear-gradient(160deg,#F2F7FE 0,#FFFFFF 240px);
  border-bottom:1px solid var(--line);
  padding:30px 0 44px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:24px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:#C3CDDC}
.breadcrumb .current{color:var(--blue);font-weight:600}
.pill{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--green-soft);color:#0E8574;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.article-title{
  font-size:34px;line-height:1.35;font-weight:700;
  margin:16px 0 20px;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.meta-row .dot{color:#C3CDDC}
.meta-row .num{font-variant-numeric:tabular-nums;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:12.5px}

/* ===== 文章布局 ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:56px;padding:56px 0 0}
@media (min-width:1200px){.article-layout{grid-template-columns:minmax(0,1fr) 220px}}
.article-main{width:100%;max-width:760px;margin:0 auto;min-width:0}

.toc{display:none}
@media (min-width:1200px){
  .toc{display:block;position:sticky;top:96px;align-self:start;font-size:13px}
  .toc-title{font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:14px}
  .toc a{display:block;padding:7px 0 7px 12px;border-left:2px solid transparent;color:var(--muted);line-height:1.65;transition:color .2s ease,border-color .2s ease}
  .toc a:hover{color:var(--blue)}
  .toc a.is-current{color:var(--blue);border-left-color:var(--blue);font-weight:600}
  .toc a.is-sub{padding-left:24px;font-size:12.5px}
}

/* ===== 正文 ===== */
.article-body{font-size:17px;line-height:1.9;color:var(--body);letter-spacing:.01em}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:24px;font-weight:650;line-height:1.45;
  color:var(--ink);margin:2em 0 .85em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:.95em;
  background:var(--blue);border-radius:2px;
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--ink);margin:1.7em 0 .7em}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:1.4em 0 .6em}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.8}
.article-body ul li::before{
  content:"";position:absolute;left:3px;top:.85em;width:6px;height:6px;
  border-radius:50%;background:var(--blue);
}
.article-body ol{counter-reset:olc}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:olc;line-height:1.8}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.15em;
  width:20px;height:20px;border-radius:50%;background:var(--blue-light);
  color:var(--blue);font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.article-body blockquote{
  margin:1.7em 0;padding:20px 22px;background:#F4F8FE;
  border-left:3px solid var(--blue);border-radius:0 10px 10px 0;color:#2F3B49;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.6em 0}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--line);text-align:left}
.article-body th{background:#F2F5F9;color:var(--ink);font-weight:600}
.article-body a{color:var(--blue);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{color:var(--blue-dark)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* 空态 */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:14px;text-align:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px 24px;box-shadow:var(--sh1);
}
.empty-state svg{width:30px;height:30px;color:var(--blue)}
.empty-state p{font-size:16px;color:var(--body)}

/* 标签行 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 15px;
  border-radius:var(--r-pill);background:var(--blue-light);color:var(--blue);
  font-size:13px;font-weight:500;transition:background-color .2s ease,color .2s ease;
}
.tag:hover{background:var(--blue);color:#fff}

/* 区块标题 */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:72px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-title{font-size:26px;font-weight:650;line-height:1.35}
@media (min-width:1024px){.section-title{font-size:28px}}
.section-sub{font-size:14px;color:var(--muted);margin-top:8px}

/* 相关推荐 */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:1023px){.rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.rec-grid{grid-template-columns:1fr;gap:16px}}
.rec-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--card);border:1px solid transparent;border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh1);color:var(--body);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.rec-card:hover{color:var(--body)}
@media (hover:hover){
  .rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--input)}
}
.rec-tag{font-size:12px;font-weight:600;color:#0E8574;letter-spacing:.03em}
.rec-title{font-size:18px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-more{font-size:13px;color:var(--blue);font-weight:600;margin-top:auto}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:32px}
@media (max-width:639px){.post-nav{grid-template-columns:1fr;gap:16px}}
.post-nav-item{
  display:flex;flex-direction:column;gap:8px;padding:22px 24px;
  background:#fff;border:1.5px solid var(--line);border-radius:var(--r-card);color:var(--body);
  transition:border-color .2s ease,box-shadow .2s ease-out,transform .2s ease-out;
}
.post-nav-item:hover{border-color:var(--input);color:var(--body)}
@media (hover:hover){
  .post-nav-item:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--input)}
}
.pn-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.06em}
.pn-label svg{width:14px;height:14px}
.post-nav-item.next{text-align:right}
.post-nav-item.next .pn-label{justify-content:flex-end}
.pn-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}

/* 返回入口 */
.back-row{margin-top:32px;display:flex;justify-content:center}

/* CTA 区 */
.cta-band{
  background:var(--blue-light);border-radius:20px;padding:56px 32px;
  text-align:center;box-shadow:var(--sh2);
}
@media (max-width:639px){.cta-band{padding:40px 20px;border-radius:16px}}
.cta-band h2{font-size:28px;font-weight:650;line-height:1.4;margin-bottom:14px}
@media (max-width:639px){.cta-band h2{font-size:23px}}
.cta-band p{max-width:620px;margin:0 auto 28px;font-size:16px;color:var(--body);line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}

/* ===== 页脚 ===== */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:96px}
.grid-x{display:flex;flex-wrap:wrap}
.grid-gap-24{margin-left:-12px;margin-right:-12px}
.grid-gap-24 > .cell{padding-left:12px;padding-right:12px;margin-bottom:36px}
.footer-grid .cell{flex:0 0 auto}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand svg{width:28px;height:28px;color:#7FB0F0}
.footer-brand span{font-size:18px;font-weight:700;letter-spacing:-.01em}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.01em}
.footer-col ul li{margin-bottom:12px;font-size:14px;line-height:1.7}
.footer-col ul li a{color:rgba(255,255,255,.72)}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ===== 底部固定转化条 ===== */
.float-cta{
  position:fixed;right:24px;bottom:24px;width:320px;z-index:50;
  background:#fff;border-radius:16px;box-shadow:var(--sh3);padding:20px;
  display:flex;flex-direction:column;gap:14px;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.fc-close{
  position:absolute;top:10px;right:10px;width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--muted);
}
.fc-close:hover{background:var(--blue-light);color:var(--blue)}
.fc-text{font-size:14px;font-weight:600;color:var(--ink);line-height:1.6;padding-right:22px}
.fc-actions{display:flex}
.mobile-cta{display:none}
@media (max-width:639px){
  .float-cta{display:none}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:55;
    gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(30,99,200,.08);
  }
  .mobile-cta .btn{flex:1}
  body{padding-bottom:76px}
}

@media (max-width:1023px){
  .main-nav{display:none}
  .search-box{display:none}
  .header-actions .btn-primary{display:none}
  .menu-toggle{display:flex}
  .header-inner{height:60px;justify-content:space-between;gap:16px}
}
@media (max-width:639px){
  .brand-text{font-size:16px}
  .brand svg{width:26px;height:26px}
  .article-hero{padding:22px 0 34px}
  .article-title{font-size:26px;margin:12px 0 16px}
  .article-layout{padding-top:36px;gap:40px}
  .article-body{font-size:16px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .section{padding:56px 0}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category2 */
:root{
  --brand:#1E63C8;
  --brand-dark:#164E9E;
  --brand-light:#EAF2FD;
  --jade:#12A38F;
  --jade-light:#EBF8F5;
  --amber:#F2813C;
  --amber-dark:#D96A28;
  --ink:#12181F;
  --text:#3C4652;
  --muted:#6B7787;
  --line:#E4E9F0;
  --hair:#E9EEF5;
  --input-border:#CBD8EA;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --hero-bg:#F2F7FE;
  --hover-bg:#F4F8FE;
  --th-bg:#F2F5F9;
  --ph:#F2F5F9;
  --footer-bg:#102A44;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(18,24,31,.04), 0 1px 3px rgba(18,24,31,.06);
  --shadow-2:0 6px 20px rgba(30,99,200,.08);
  --shadow-3:0 12px 28px rgba(30,99,200,.14);
  --focus-ring:0 0 0 3px rgba(30,99,200,.14);
  --sec-desktop:96px;
  --sec-tablet:72px;
  --sec-mobile:56px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;background-color:transparent;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-btn);
  font-size:16px;
  font-weight:600;
  line-height:1;
  padding:14px 28px;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  white-space:nowrap;
  border:1.5px solid transparent;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{
  background:var(--amber);
  color:#fff;
  box-shadow:var(--shadow-1);
}
.btn-accent:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;
  color:var(--brand);
  border-color:var(--input-border);
}
.btn-ghost:hover{background:var(--hover-bg);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:14px;}
.link-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-weight:600;
  font-size:15px;
  transition:color .2s ease;
}
.link-cta:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
.link-cta svg{transition:transform .2s ease;}
.link-cta:hover svg{transform:translateX(3px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--hair);
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-2);}
.header-inner{
  display:flex;
  align-items:center;
  height:72px;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  flex-shrink:0;
}
.brand svg{width:28px;height:28px;color:var(--brand);flex-shrink:0;}
.main-nav{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:22px;
}
.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  color:var(--text);
  padding:9px 12px;
  border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--brand);background:var(--hover-bg);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:1px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.search-box{position:relative;display:flex;align-items:center;}
.search-box svg{
  position:absolute;
  left:14px;
  width:16px;height:16px;
  color:var(--muted);
  pointer-events:none;
}
.search-box input{
  width:240px;
  height:40px;
  padding:0 16px 0 40px;
  border:1.5px solid var(--input-border);
  border-radius:var(--radius-pill);
  background:#fff;
  font-size:14px;
  line-height:1;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--muted);}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:var(--focus-ring);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1.5px solid var(--input-border);
  color:var(--brand);
}
.nav-toggle:hover{background:var(--hover-bg);border-color:var(--brand);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;
  inset:0;
  background:rgba(18,24,31,.42);
  opacity:0;
  pointer-events:none;
  transition:opacity .22s ease;
  z-index:130;
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:340px;
  height:100%;
  background:#fff;
  z-index:140;
  transform:translateX(102%);
  transition:transform .25s ease-out;
  padding:22px 20px 32px;
  overflow-y:auto;
  box-shadow:var(--shadow-3);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1.5px solid var(--input-border);color:var(--brand);display:flex;align-items:center;justify-content:center;}
.drawer-close:hover{background:var(--hover-bg);border-color:var(--brand);}
.drawer-search{position:relative;margin-bottom:20px;}
.drawer-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted);}
.drawer-search input{
  width:100%;height:44px;padding:0 16px 0 40px;
  border:1.5px solid var(--input-border);border-radius:var(--radius-pill);font-size:14px;
}
.drawer-search input:focus{outline:none;border-color:var(--brand);box-shadow:var(--focus-ring);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  padding:12px 14px;
  border-radius:10px;
  font-size:16px;
  color:var(--text);
  transition:background-color .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:var(--hover-bg);color:var(--brand);}
.drawer-nav a.is-active{background:var(--brand-light);color:var(--brand);font-weight:600;}
.drawer-cta{width:100%;}

/* ---------- Hero-lite ---------- */
.hero-lite{
  position:relative;
  overflow:hidden;
  background:linear-gradient(160deg,var(--hero-bg) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--hair);
  padding:56px 0 64px;
  text-align:center;
}
.hero-lite .ring{
  position:absolute;
  border-radius:50%;
  border:1px solid rgba(30,99,200,.10);
  pointer-events:none;
}
.hero-lite .ring-1{width:420px;height:420px;left:-140px;top:-180px;}
.hero-lite .ring-2{width:300px;height:300px;right:-100px;top:-80px;border-color:rgba(18,163,143,.12);}
.hero-lite .ring-3{width:180px;height:180px;right:16%;bottom:-110px;}
.hero-lite .ring-4{width:120px;height:120px;left:12%;bottom:-70px;border-color:rgba(242,129,60,.14);}
.hero-lite .crumb{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:16px;
}
.hero-lite .crumb a{color:var(--muted);transition:color .2s ease;}
.hero-lite .crumb a:hover{color:var(--brand);}
.hero-lite .crumb .sep{color:#C9D3E0;}
.hero-lite .crumb .now{color:var(--brand);font-weight:600;}
.hero-lite h1{
  position:relative;
  font-size:40px;
  line-height:1.25;
  letter-spacing:-.01em;
  font-weight:700;
  color:var(--ink);
  max-width:900px;
  margin:0 auto 18px;
}
.hero-lead{
  position:relative;
  max-width:760px;
  margin:0 auto 30px;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
}
.hero-actions{position:relative;display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-desktop) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:28px;
  line-height:1.35;
  font-weight:650;
  color:var(--ink);
  letter-spacing:-.01em;
  padding-left:16px;
  position:relative;
}
.section-head.center h2{padding-left:0;}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:.86em;
  background:var(--brand);
  border-radius:2px;
}
.section-head.center h2::before{display:none;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px;}

/* ---------- 单栏内容 ---------- */
.narrow{max-width:820px;margin:0 auto;}
.lead-para{
  font-size:17px;
  color:var(--text);
  padding:24px 28px;
  background:#fff;
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  box-shadow:var(--shadow-1);
  margin-bottom:48px;
}
.step{
  display:flex;
  gap:24px;
  padding:32px 0;
  border-bottom:1px solid var(--line);
}
.step:last-of-type{border-bottom:0;}
.step-num{
  flex:0 0 62px;
  font-size:32px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand);
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.step-body h3{
  font-size:20px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:12px;
  line-height:1.5;
}
.step-body p{margin-bottom:12px;font-size:16px;color:var(--text);}
.step-body p:last-child{margin-bottom:0;}
.step-points{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.step-points li{
  position:relative;
  padding-left:22px;
  font-size:15.5px;
  color:var(--text);
  line-height:1.8;
}
.step-points li::before{
  content:"";
  position:absolute;
  left:4px;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--brand);
}
.figure{margin:44px 0 0;}
.figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-img);
  background:var(--ph);
  box-shadow:var(--shadow-2);
}
.figure figcaption{
  margin-top:12px;
  font-size:13px;
  color:var(--muted);
  text-align:center;
}

/* ---------- 横向卡带 ---------- */
.band-wrap{background:#fff;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);}
.band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.band-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.band-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-3);border-color:#D7E3F4;}
.band-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--brand-light);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.band-icon svg{width:22px;height:22px;}
.band-card h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;}
.band-card p{font-size:14.5px;color:var(--muted);line-height:1.75;}

/* ---------- 对比清单 ---------- */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-col{
  border-radius:var(--radius-card);
  padding:34px 30px;
  box-shadow:var(--shadow-1);
}
.compare-col.jade{background:var(--jade-light);}
.compare-col.blue{background:var(--brand-light);}
.compare-col h3{
  font-size:20px;
  font-weight:650;
  color:var(--ink);
  margin-bottom:8px;
  display:flex;align-items:center;gap:10px;
}
.compare-col h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--jade);}
.compare-col.blue h3 .dot{background:var(--brand);}
.compare-col .sub{font-size:14px;color:var(--muted);margin-bottom:20px;}
.compare-list{display:flex;flex-direction:column;gap:14px;}
.compare-list li{
  display:flex;
  gap:12px;
  font-size:15.5px;
  color:var(--text);
  line-height:1.8;
}
.compare-list li svg{
  width:18px;height:18px;
  flex:0 0 18px;
  margin-top:6px;
  color:var(--jade);
}
.compare-col.blue .compare-list li svg{color:var(--brand);}
.compare-list li strong{color:var(--ink);font-weight:600;}

/* ---------- 表单 ---------- */
.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:40px;
  box-shadow:var(--shadow-2);
  max-width:820px;
  margin:0 auto;
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px 24px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field label .req{color:var(--brand);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;
  border:1.5px solid var(--input-border);
  border-radius:var(--radius-input);
  background:#fff;
  font-size:15px;
  padding:0 14px;
  height:48px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:120px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:var(--focus-ring);
}
.field .hint{font-size:13px;color:var(--muted);}
.form-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:26px;
  flex-wrap:wrap;
}
.form-foot .note{font-size:13.5px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  max-width:880px;
  margin:0 auto;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 28px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  transition:background-color .2s ease,color .2s ease;
}
.faq-q:hover{background:var(--hover-bg);color:var(--brand);}
.faq-icon{
  flex:0 0 22px;
  width:22px;height:22px;
  position:relative;
  color:var(--brand);
  transition:transform .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-icon::before{left:50%;top:4px;width:2px;height:14px;transform:translateX(-50%);}
.faq-icon::after{top:50%;left:4px;height:2px;width:14px;transform:translateY(-50%);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a-inner{
  padding:0 28px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text);
}

/* ---------- CTA 区块 ---------- */
.cta-band{
  background:var(--brand-light);
  padding:84px 0;
  text-align:center;
}
.cta-band h2{
  font-size:28px;
  font-weight:650;
  color:var(--ink);
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.cta-band p{
  max-width:640px;
  margin:0 auto 30px;
  font-size:16px;
  color:var(--text);
}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--footer-bg);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  font-size:14px;
}
.footer-grid{gap:32px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;
  font-size:19px;font-weight:700;
  margin-bottom:14px;
}
.footer-brand svg{width:28px;height:28px;color:#7FB2F2;flex-shrink:0;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:360px;}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:14px;line-height:1.7;}
.footer-col a{
  color:rgba(255,255,255,.72);
  transition:color .2s ease,text-decoration-color .2s ease;
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ---------- 浮动转化 ---------- */
.side-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  width:320px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-3);
  padding:20px 22px;
  z-index:100;
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
}
.side-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.side-cta h4{font-size:15px;font-weight:650;color:var(--ink);line-height:1.6;margin-bottom:6px;padding-right:26px;}
.side-cta p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:16px;}
.side-cta .side-btn{width:100%;}
.side-cta-close{
  position:absolute;
  top:12px;right:12px;
  width:26px;height:26px;
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);
  transition:background-color .2s ease,color .2s ease;
}
.side-cta-close:hover{background:var(--hover-bg);color:var(--brand);}
.side-cta-close svg{width:14px;height:14px;}

.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  height:64px;
  background:#fff;
  border-top:1px solid var(--hair);
  box-shadow:0 -6px 20px rgba(30,99,200,.10);
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  gap:12px;
  z-index:100;
}
.mobile-bar .btn{flex:1;padding:12px 10px;font-size:15px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  .band{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .header-inner{height:64px;}
  .brand{font-size:18px;}
  .section{padding:var(--sec-tablet) 0;}
  .hero-lite{padding:48px 0 56px;}
  .hero-lite h1{font-size:34px;}
  .band{grid-template-columns:repeat(2,1fr);}
  .compare{grid-template-columns:1fr;}
}
@media (max-width:639px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:var(--sec-mobile) 0;}
  .hero-lite{padding:40px 0 48px;}
  .hero-lite h1{font-size:28px;}
  .hero-lead{font-size:16px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:23px;}
  .step{flex-direction:column;gap:6px;padding:26px 0;}
  .step-num{flex:none;font-size:28px;}
  .lead-para{padding:20px;font-size:16px;}
  .band{
    display:flex;
    gap:16px;
    overflow-x:auto;
    padding-bottom:8px;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
  }
  .band-card{flex:0 0 78%;scroll-snap-align:start;}
  .form-card{padding:24px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 20px;}
  .faq-a-inner{padding:0 20px 20px;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:23px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .side-cta{display:none;}
  .mobile-bar{display:flex;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}