/* roulang page: index */
:root{
  --brand-900:#0C2E5C;
  --brand-700:#14549B;
  --brand-600:#1B63B5;
  --brand-500:#2A78CC;
  --brand-100:#E8F1FB;
  --accent-600:#E4620B;
  --accent-500:#FF7A1A;
  --accent-100:#FFF1E4;
  --ink:#0F1B2B;
  --body:#4A5A70;
  --muted:#7C8CA1;
  --line:#E4EAF1;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --success:#12A67A;
  --warn:#D97706;
  --danger:#DC2626;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(15,27,43,.04), 0 8px 24px rgba(15,27,43,.05);
  --shadow-hover:0 10px 28px rgba(15,27,43,.10);
  --shadow-pop:0 16px 40px rgba(15,27,43,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:28px;line-height:1.35}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 1.15em}
a{color:var(--brand-700);text-decoration:none}
a.inline-link{border-bottom:1px dashed var(--brand-500);transition:border-color .16s var(--ease),color .16s var(--ease)}
a.inline-link:hover{border-bottom-style:solid;border-bottom-color:var(--brand-700);color:var(--brand-600)}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head p{margin:8px 0 0;color:var(--muted);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:24px;padding:0 12px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:500;letter-spacing:.02em}
.eyebrow.accent{background:var(--accent-100);color:var(--accent-600)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);display:inline-block}
.eyebrow.accent .dot{background:var(--accent-500)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
.btn-outline{background:#fff;border:1px solid var(--line);color:var(--brand-700)}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-100);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700)}
.arrow-link svg{transition:transform .2s var(--ease)}
.arrow-link:hover svg{transform:translateX(3px)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:0 4px 18px rgba(15,27,43,.06)}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-700);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-text{font-size:17px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.brand-text b{font-weight:700}
.brand-text span{font-weight:400}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-link{position:relative;font-size:15px;color:var(--body);padding:22px 0;transition:color .16s var(--ease);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;width:60%;margin:0 auto;border-radius:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease)}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:236px;height:40px;
  padding:0 16px;border-radius:var(--r-pill);background:var(--bg);border:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink)}
.nav-search input::placeholder{color:var(--muted)}
.nav-btn{height:40px;padding:0 20px;font-size:14.5px}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;background:#fff}
.hamburger span{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:17px;height:2px;background:var(--ink);border-radius:2px}
.hamburger span::before{top:-5px}
.hamburger span::after{top:5px}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:50}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:#fff;z-index:51;
  transform:translateX(102%);transition:transform .26s var(--ease);
  padding:20px 22px 32px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted);background:#fff}
.drawer-link{display:block;padding:13px 2px;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--ink)}
.drawer-link.active{color:var(--brand-700);font-weight:600}
.drawer-search{display:flex;align-items:center;height:44px;padding:0 16px;border-radius:var(--r-pill);background:var(--bg)}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:6px}
body.locked{overflow:hidden}

/* Hero */
.hero{position:relative;padding:56px 0 64px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;min-height:560px}
.hero h1{margin:18px 0 16px}
.hero-sub{font-size:17px;color:var(--body);max-width:34em}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 22px}
.trust-row{display:flex;gap:10px;flex-wrap:wrap}
.trust-chip{display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);font-size:13px;color:var(--body)}
.trust-chip svg{flex-shrink:0}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:440px;background:var(--brand-100);box-shadow:var(--shadow-card)}
.hero-visual img{width:100%;height:100%;min-height:440px;object-fit:cover}
.hero-visual-mask{position:absolute;inset:0;background:linear-gradient(135deg,rgba(232,241,251,.94) 0%,rgba(255,255,255,.58) 52%,rgba(255,241,228,.72) 100%)}
.hero-login-card{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(336px,86%);background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-pop);padding:24px;
}
.hero-login-card h3{font-size:17px;margin-bottom:4px}
.hero-login-card .hint{font-size:12.5px;color:var(--muted);margin:0 0 16px}
.fake-field{margin-bottom:14px}
.fake-field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.fake-field input{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;font-size:14.5px;color:var(--ink);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.fake-field input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.fake-field input[readonly]{background:#fff;cursor:default}
.hero-login-card .btn{width:100%}
.card-note{font-size:12px;color:var(--muted);text-align:center;margin:12px 0 0}

/* 卖点 Bento */
.bento{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.bento-main{padding:0;overflow:hidden;display:flex;flex-direction:column;border-radius:var(--r-lg)}
.bento-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.bento-main-body{padding:28px 30px 30px}
.bento-main-body h3{font-size:22px;margin-bottom:10px}
.bento-main-body p{margin:0 0 18px}
.bento-aside{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.mini-card{padding:24px;display:flex;gap:16px;align-items:flex-start}
.mini-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-100);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.mini-card h3{font-size:17px;margin-bottom:6px}
.mini-card p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step{position:relative;padding-right:12px}
.step-num{
  width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--brand-500);
  color:var(--brand-700);font-weight:700;display:flex;align-items:center;justify-content:center;
  background:#fff;font-size:16px;margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14px;color:var(--muted);line-height:1.7;margin:0}
.step:not(:last-child)::after{
  content:"";position:absolute;top:22px;right:-6px;width:calc(100% - 52px);height:1px;
  border-top:1px dashed #C9D7E7;
}
.wide-figure{margin-top:40px}
.wide-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-card);background:var(--brand-100)}
.wide-figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:14px}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.news-side{display:grid;gap:24px}
.post-card{overflow:hidden;display:flex;flex-direction:column;border-radius:var(--r-card)}
.post-card.featured{border-radius:var(--r-lg)}
.post-thumb{position:relative;background:var(--brand-100)}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-card.featured .post-thumb img{aspect-ratio:16/8}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.post-card.featured .post-body{padding:28px 30px 30px}
.post-body h3{font-size:18px;line-height:1.5;margin:12px 0 10px;transition:color .2s var(--ease);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .post-body h3{color:var(--brand-700)}
.post-body .excerpt{font-size:14px;line-height:1.7;color:var(--muted);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:500}
.badge.accent{background:var(--accent-100);color:var(--accent-600)}
.card-link{position:absolute;inset:0;z-index:2}
.post-card{position:relative}
.empty-box{
  border:1px dashed #C9D7E7;border-radius:var(--r-card);background:#fff;
  padding:52px 24px;text-align:center;
}
.empty-box svg{margin:0 auto 14px}
.empty-box p{font-size:14.5px;color:var(--muted);margin:0 0 18px}

/* 数据条 */
.stat-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:32px 24px;
}
.stat{text-align:center;padding:0 12px}
.stat b{display:block;font-size:30px;line-height:1.2;color:var(--brand-700);letter-spacing:-.01em}
.stat span{font-size:13px;color:var(--muted)}
.stat:not(:last-child){border-right:1px solid var(--line)}

.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.quote-card{padding:24px}
.quote-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{width:40px;height:40px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-weight:600;font-size:15px;flex-shrink:0}
.quote-head strong{display:block;font-size:14.5px;color:var(--ink);font-weight:600}
.quote-head em{font-style:normal;font-size:12.5px;color:var(--muted)}
.quote-card p{font-size:14.5px;line-height:1.75;margin:0}
.logo-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:36px}
.logo-slot{height:56px;border-radius:12px;background:#EDF1F6;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:#A9B7C8;font-size:13px;letter-spacing:.06em}

/* FAQ */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-700);background:rgba(232,241,251,.4)}
.faq-item.open .faq-q{color:var(--brand-700)}
.faq-sign{
  width:28px;height:28px;border-radius:var(--r-pill);border:1px solid var(--line);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;color:var(--brand-700);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.faq-item.open .faq-sign{background:var(--accent-500);border-color:var(--accent-500);color:#fff;transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a-inner{padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--body)}
.faq-a-inner p{margin:0}

/* 结尾 CTA */
.cta-band{
  background:var(--brand-100);border-radius:var(--r-lg);padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border:1px solid #D6E6F7;
}
.cta-band h3{font-size:22px;margin-bottom:6px}
.cta-band p{margin:0;font-size:15px;color:var(--body)}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:#fff}
.footer-brand .brand-text{color:#fff}
.footer-chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.footer-chips span{font-size:12.5px;padding:5px 11px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.72)}
.footer-list li{margin-bottom:10px}
.footer-list a{position:relative;font-size:14px;color:rgba(255,255,255,.7);padding-left:0;transition:color .16s var(--ease),padding-left .16s var(--ease)}
.footer-list a::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:0;background:var(--accent-500);border-radius:2px;transition:height .16s var(--ease)}
.footer-list a:hover{color:#fff;padding-left:10px}
.footer-list a:hover::before{height:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom .legal{display:flex;gap:18px;flex-wrap:wrap}
.to-top{
  width:42px;height:42px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.8);background:transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{background:#fff;color:var(--ink);transform:translateY(-2px)}

/* 底部固定转化条 */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:35;display:none;
  height:64px;padding:0 16px calc(env(safe-area-inset-bottom,0px));
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(15,27,43,.10);
  align-items:center;justify-content:space-between;gap:14px;
  transform:translateY(100%);opacity:0;transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.mobile-cta.show{transform:translateY(0);opacity:1}
.mobile-cta span{font-size:13.5px;color:var(--body)}
.mobile-cta .btn{height:44px;padding:0 20px;font-size:14.5px}

/* 响应式 */
@media (max-width:1199px){
  .container{padding:0 20px}
  .nav-search{width:200px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .nav-links,.nav-search,.nav-right .btn{display:none}
  .hamburger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto}
  .hero-visual{min-height:360px;order:2}
  .hero-visual img{min-height:360px}
  .bento{grid-template-columns:1fr}
  .bento-aside{grid-template-rows:auto auto;grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;gap:28px 24px}
  .step:not(:last-child)::after{display:none}
  .news-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .logo-strip{grid-template-columns:repeat(3,1fr)}
  .mobile-cta{display:flex}
  body{padding-bottom:64px}
}
@media (max-width:767px){
  .section{padding:52px 0}
  .section-head{margin-bottom:26px}
  h2{font-size:23px}
  .stat-band{grid-template-columns:1fr 1fr;gap:22px 8px;padding:26px 16px}
  .stat:nth-child(2){border-right:0}
  .stat:not(:last-child){border-right:0}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .quote-grid{grid-template-columns:1fr}
  .bento-aside{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .logo-strip{grid-template-columns:1fr 1fr}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a-inner{padding:0 18px 20px}
  .hero-actions .btn{width:100%}
}

/* roulang page: article */
:root{
  --brand-900:#0C2E5C; --brand-700:#14549B; --brand-600:#1B63B5; --brand-500:#2A78CC; --brand-100:#E8F1FB;
  --accent-600:#E4620B; --accent-500:#FF7A1A; --accent-100:#FFF1E4;
  --ink:#0F1B2B; --body:#4A5A70; --muted:#7C8CA1; --line:#E4EAF1; --bg:#F5F7FA; --surface:#FFFFFF;
  --success:#12A67A; --warn:#D97706; --danger:#DC2626;
  --r-btn:10px; --r-card:16px; --r-big:20px; --r-pill:999px;
  --sh-card:0 1px 2px rgba(15,27,43,.04), 0 8px 24px rgba(15,27,43,.05);
  --sh-hover:0 10px 28px rgba(15,27,43,.10);
  --sh-float:0 16px 40px rgba(15,27,43,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.site-body{
  margin:0;padding:0;background:var(--bg);color:var(--body);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);letter-spacing:-.01em;line-height:1.35}
p{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.sec-title{font-size:28px;font-weight:700}
.sec-sub{font-size:14.5px;color:var(--muted);margin-top:6px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-size:14.5px;font-weight:600}
.arrow-link svg{transition:transform .18s ease}
.arrow-link:hover svg{transform:translateX(2px)}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,43,.07)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand-700),var(--brand-500));display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{display:flex;align-items:baseline;gap:3px;font-size:16.5px;line-height:1;color:var(--ink);white-space:nowrap}
.brand-text b{font-weight:700}
.brand-text span{font-weight:400;color:#3B4C63}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;padding:9px 12px;font-size:14.5px;color:#33475F;border-radius:8px;transition:color .16s ease}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{display:flex;align-items:center;gap:8px;height:40px;width:236px;padding:0 14px;background:#F5F7FA;border:1px solid transparent;border-radius:var(--r-pill);transition:background .18s,box-shadow .18s,border-color .18s}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:0;font-size:14px;color:var(--ink)}
.nav-search input::placeholder{color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,border-color .18s,color .18s}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.btn:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-100);transform:translateY(-1px)}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,122,26,.22)}
.btn-accent:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
.btn-brand{background:var(--brand-600);color:#fff}
.btn-brand:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.btn-block{width:100%}
.hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer}
.hamburger span{width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative;display:block}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px}
.hamburger span::before{top:-5px}
.hamburger span::after{top:5px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:60}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;background:#fff;z-index:70;transform:translateX(100%);transition:transform .26s cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;padding:18px 20px 28px;box-shadow:var(--sh-float)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink)}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-size:20px;line-height:1;cursor:pointer}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;background:#F5F7FA;border-radius:var(--r-pill);margin-bottom:18px}
.drawer-search input{flex:1;border:0;background:transparent;outline:0;font-size:14px}
.drawer-links{display:flex;flex-direction:column;gap:2px}
.drawer-links a{padding:12px 10px;border-radius:10px;font-size:15px;color:#33475F;border-left:2px solid transparent}
.drawer-links a:hover{background:var(--brand-100);color:var(--brand-700)}
.drawer-links a.active{color:var(--brand-700);font-weight:600;border-left-color:var(--accent-500);background:var(--brand-100)}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:20px}

/* ============ breadcrumb ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:8px;height:52px;font-size:13.5px;color:var(--muted);overflow:hidden;white-space:nowrap}
.crumb a{color:#4A5A70}
.crumb a:hover{color:var(--brand-700)}
.crumb .sep{color:#C3CEDA}
.crumb .now{color:var(--ink);max-width:52%;overflow:hidden;text-overflow:ellipsis}

/* ============ article ============ */
.article-wrap{padding:40px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:44px;align-items:start}
.article-main{min-width:0}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;background:var(--brand-100);color:var(--brand-700)}
.badge-accent{background:var(--accent-100);color:var(--accent-600)}
.article-head{margin-bottom:22px}
.article-head h1{font-size:clamp(28px,3.4vw,40px);font-weight:700;line-height:1.3;margin:14px 0 16px;letter-spacing:-.01em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--line)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3CEDA}
.cover-figure{margin:24px 0 0;border-radius:var(--r-big);overflow:hidden;border:1px solid var(--line);background:#fff}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover-figure figcaption{font-size:13px;color:var(--muted);text-align:center;padding:12px 16px;border-top:1px solid var(--line)}

.article-body{
  margin-top:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-big);
  box-shadow:var(--sh-card);padding:40px;font-size:17.5px;line-height:1.9;color:#3B4C63;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{font-size:24px;font-weight:700;margin:40px 0 16px;padding-left:14px;position:relative;scroll-margin-top:90px}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;width:4px;height:1em;border-radius:4px;background:var(--brand-600)}
.article-body h3{font-size:19px;font-weight:600;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px}
.article-body p{margin:0 0 1.15em}
.article-body a{color:var(--brand-700);border-bottom:1px dashed var(--brand-500)}
.article-body a:hover{border-bottom-style:solid}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:0;list-style:none}
.article-body ol{counter-reset:li;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand-500)}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:8px;counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center}
.article-body blockquote{margin:24px 0;padding:16px 22px;border-left:4px solid var(--brand-500);background:var(--brand-100);border-radius:0 12px 12px 0;color:#2A3B52}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body thead th{background:#F0F5FB;color:var(--ink);font-weight:600}
.article-body tbody tr:nth-child(even) td{background:var(--bg)}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;background:var(--bg);border:1px solid var(--line);padding:1px 6px;border-radius:6px;font-size:.9em}
.article-body pre{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px;overflow-x:auto;margin:0 0 1.15em}
.article-body pre code{background:none;border:0;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px}
.tag-row .tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);font-size:13px;color:#4A5A70;transition:.18s}
.tag-row .tag:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100)}
.share-row{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:22px;border-top:1px solid var(--line)}
.icon-btn{width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;color:#4A5A70;cursor:pointer;transition:.18s}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100)}
.icon-btn.is-on{border-color:var(--accent-500);color:var(--accent-600);background:var(--accent-100)}
.share-note{font-size:13px;color:var(--muted)}
.back-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* sidebar */
.side{display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:22px}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px}
.side-sticky{position:sticky;top:92px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow:auto}
.toc-list a{display:block;padding:7px 10px;font-size:13.5px;color:#4A5A70;border-left:2px solid transparent;border-radius:0 8px 8px 0}
.toc-list a:hover{color:var(--brand-700);background:var(--brand-100)}
.toc-list a.active{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-600);background:var(--brand-100)}
.hot-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.hot-list a{display:flex;gap:10px;font-size:14px;color:#3B4C63;line-height:1.6}
.hot-list a:hover{color:var(--brand-700)}
.hot-num{flex:0 0 auto;width:20px;height:20px;border-radius:6px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px}
.hot-list a:nth-child(-n+3) .hot-num{background:var(--accent-100);color:var(--accent-600)}
.side-text{font-size:13.5px;color:var(--muted);line-height:1.8}

/* related */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.card:hover .card-title{color:var(--brand-700)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:18px 20px 20px}
.card-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s}
.card-text{font-size:14px;color:var(--body);line-height:1.7;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12.5px;color:var(--muted)}

/* cta */
.cta-band{background:var(--brand-100);border-radius:var(--r-big);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;border:1px solid #D8E6F7}
.cta-band h3{font-size:24px;font-weight:700}
.cta-band p{font-size:14.5px;color:#3B4C63;margin-top:8px;max-width:640px}

/* empty */
.empty-state{border:1px dashed #C9D6E5;border-radius:var(--r-card);background:#fff;padding:56px 24px;text-align:center}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:20px}

/* footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand-mark{background:#fff}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text span{color:rgba(255,255,255,.72)}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-chips span{font-size:12.5px;padding:4px 12px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.78)}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;padding-left:0;border-left:2px solid transparent;transition:color .16s ease,border-color .16s ease,padding-left .16s ease}
.footer-list a:hover{color:#fff;border-left-color:var(--accent-500);padding-left:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6)}
.legal{display:flex;align-items:center;gap:16px;font-size:13px;color:rgba(255,255,255,.6)}
.to-top{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:transparent;color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:.18s}
.to-top:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* mobile cta bar */
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:35;display:none;align-items:center;justify-content:space-between;gap:14px;height:64px;padding:0 16px calc(env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(15,27,43,.10);opacity:0;transform:translateY(100%);transition:opacity .2s ease,transform .2s ease}
.mobile-cta.is-show{opacity:1;transform:translateY(0)}
.mobile-cta span{font-size:14px;color:#3B4C63}
.mobile-cta .btn{height:44px;padding:0 20px;font-size:14.5px}

@media (max-width:1023px){
  .nav-links,.nav-search{display:none}
  .hamburger{display:inline-flex}
  .nav-right{gap:10px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .side-sticky{position:static}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-cta{display:flex}
  body.site-body{padding-bottom:84px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-body{padding:24px 20px;font-size:17px;border-radius:var(--r-card)}
  .article-body h2{font-size:21px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px}
  .article-head h1{font-size:26px}
  .share-row{flex-wrap:wrap}
}
@media (max-width:559px){
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .nav-btn{display:none}
  .nav-inner{height:56px}
  .crumb{height:46px}
  .crumb .now{max-width:40%}
  .article-wrap{padding:24px 0 56px}
  .btn{width:100%}
  .btn-inline{width:auto}
  .icon-btn{width:38px;height:38px}
}

/* roulang page: category1 */
:root{
  --brand-900:#0C2E5C;--brand-700:#14549B;--brand-600:#1B63B5;--brand-500:#2A78CC;--brand-100:#E8F1FB;
  --accent-600:#E4620B;--accent-500:#FF7A1A;--accent-100:#FFF1E4;
  --ink:#0F1B2B;--body:#4A5A70;--muted:#7C8CA1;--line:#E4EAF1;--bg:#F5F7FA;--surface:#FFFFFF;
  --success:#12A67A;--warn:#D97706;--danger:#DC2626;
  --r-btn:10px;--r-card:16px;--r-lg:20px;--r-pill:999px;
  --shadow-card:0 1px 2px rgba(15,27,43,.04),0 8px 24px rgba(15,27,43,.05);
  --shadow-hover:0 10px 28px rgba(15,27,43,.10);
  --shadow-pop:0 16px 40px rgba(15,27,43,.14);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--body);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:0;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand-700);text-decoration:none;transition:color .16s ease}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0 0 1.15em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,43,.08)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-900));
  display:grid;place-items:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.14;color:var(--ink)}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text span{font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:6px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink);white-space:nowrap}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;bottom:-4px;width:60%;height:2px;
  border-radius:2px;background:var(--accent-500);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:230px;height:40px;padding:0 14px;
  background:#F5F7FA;border:1px solid transparent;border-radius:var(--r-pill);
  transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
.nav-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink)}
.nav-search input::placeholder{color:var(--muted)}
.hamburger{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;
  border-radius:12px;position:relative;
}
.hamburger::before,.hamburger::after,.hamburger span{
  content:"";position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:var(--ink);
}
.hamburger::before{top:14px}
.hamburger span{top:20px}
.hamburger::after{top:26px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn svg{transition:transform .18s var(--ease)}
.btn:hover svg{transform:translateX(2px)}
.btn-accent{background:var(--accent-600);color:#fff}
.btn-accent:hover{background:#C4550A;transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
.btn-accent:active{transform:translateY(0)}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-100);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 30px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700)}
.arrow-link svg{transition:transform .18s var(--ease)}
.arrow-link:hover svg{transform:translateX(2px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-700);
  font-size:12.5px;font-weight:500;line-height:1;
}
.badge-accent{background:var(--accent-100);color:var(--accent-600)}

/* ---------- 页面头（左文右图） ---------- */
.page-hero{padding:64px 0 72px;background:
  radial-gradient(900px 380px at 88% -10%,rgba(42,120,204,.10),transparent 60%),
  linear-gradient(180deg,#FFFFFF 0%,#F5F7FA 100%);
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb span.sep{color:#C3CEDB}
.page-hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.page-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.01em;margin:16px 0 14px}
.page-hero .lead{font-size:17px;color:var(--brand-700);font-weight:600;margin-bottom:14px}
.page-hero__text p{max-width:38em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.page-hero__media{position:relative}
.page-hero__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-pop);
}
.media-note{
  margin-top:12px;text-align:center;font-size:13px;color:var(--muted);
}
.media-strip{
  position:absolute;left:18px;bottom:52px;display:flex;gap:8px;flex-wrap:wrap;
  padding:10px 12px;background:rgba(255,255,255,.92);border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-card);
}
.media-strip span{font-size:12.5px;color:var(--brand-700);font-weight:600}

/* ---------- 勾选清单 ---------- */
.check-list{display:grid;gap:14px;margin-top:26px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--body);max-width:40em}
.check-icon{
  flex:0 0 auto;width:22px;height:22px;margin-top:3px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-700);display:grid;place-items:center;
}
.check-icon svg{width:12px;height:12px}

/* ---------- 提示条 ---------- */
.tip-bar{
  display:flex;gap:12px;align-items:flex-start;margin-top:28px;padding:16px 18px;
  background:var(--accent-100);border:1px solid #F6DCC2;border-left:4px solid var(--accent-500);
  border-radius:0 12px 12px 0;font-size:14.5px;color:#8A4410;max-width:44em;
}
.tip-bar strong{color:#6F350A}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:28px;line-height:1.35;margin-bottom:8px}
.section-head p{margin:0;font-size:15px;color:var(--muted);max-width:52em}

/* ---------- 核对清单卡片 ---------- */
.prep-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.prep-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s ease,border-color .2s ease;
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D5E3F3}
.prep-icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;margin-bottom:16px;
}
.prep-card h3{font-size:20px;line-height:1.5;margin-bottom:8px}
.prep-card p{margin:0;font-size:14.8px;color:var(--body)}
.prep-card .meta{margin-top:14px;font-size:12.5px;color:var(--muted)}

/* ---------- 四步流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:6px}
.step-num{
  width:46px;height:46px;border-radius:var(--r-pill);background:var(--brand-100);
  border:1px solid #D3E4F7;color:var(--brand-700);font-weight:700;font-size:17px;
  display:grid;place-items:center;margin-bottom:16px;
}
.step:not(:last-child)::after{
  content:"";position:absolute;top:28px;left:58px;right:-16px;
  border-top:2px dashed #CFE0F2;
}
.step h3{font-size:18px;line-height:1.5;margin-bottom:8px}
.step p{margin:0;font-size:14.5px;color:var(--body)}

/* ---------- 相关频道 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;gap:12px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);padding:28px;
  box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.rel-card h3{font-size:19px;line-height:1.5}
.rel-card p{margin:0;font-size:14.5px;color:var(--body);flex:1}
.rel-card .rel-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:4px}
.rel-card.is-current{border-color:#C9DFF7;background:linear-gradient(180deg,#FFFFFF, #F7FBFF)}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 88px}
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:48px 40px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
}
.cta-block::before{content:"";position:absolute;inset:0;background:rgba(232,241,251,.90)}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{font-size:26px;line-height:1.4;margin-bottom:8px}
.cta-inner p{margin:0;font-size:15px;color:var(--body);max-width:44em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:64px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.site-footer .brand-mark{background:linear-gradient(135deg,var(--accent-500),var(--accent-600))}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text span{color:rgba(255,255,255,.68)}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer p{margin:0 0 12px;color:rgba(255,255,255,.68)}
.footer-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-chips span{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);color:rgba(255,255,255,.82);font-size:12.5px;
}
.footer-list li{margin-bottom:10px}
.footer-list a{
  position:relative;display:inline-block;color:rgba(255,255,255,.7);
  transition:color .16s ease,padding-left .16s ease;
}
.footer-list a:hover{color:#fff;padding-left:10px}
.footer-list a:hover::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:14px;background:var(--accent-500);border-radius:2px;
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;
}
.footer-bottom p{margin:0;color:rgba(255,255,255,.6)}
.legal{display:flex;align-items:center;gap:16px;color:rgba(255,255,255,.6)}
.to-top{
  width:38px;height:38px;border-radius:50%;background:transparent;
  border:1px solid rgba(255,255,255,.28);color:#fff;display:grid;place-items:center;
  transition:background-color .16s ease,border-color .16s ease,transform .16s ease;
}
.to-top:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:60;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:#fff;z-index:61;
  transform:translateX(100%);transition:transform .26s var(--ease);
  padding:20px 20px 32px;overflow-y:auto;box-shadow:var(--shadow-pop);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--ink);font-size:20px;line-height:1;display:grid;place-items:center;
}
.drawer-close:hover{background:var(--brand-100);border-color:var(--brand-500)}
.drawer-nav{display:grid;gap:4px;margin-bottom:20px}
.drawer-nav a{
  display:block;padding:12px 14px;border-radius:12px;color:var(--ink);font-size:15px;font-weight:500;
}
.drawer-nav a:hover{background:var(--brand-100);color:var(--brand-700)}
.drawer-nav a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;margin-bottom:18px;
  background:#F5F7FA;border:1px solid var(--line);border-radius:var(--r-pill);
}
.drawer-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px}
.drawer-actions{display:grid;gap:12px}
.drawer-actions .btn{width:100%}
body.drawer-locked{overflow:hidden}

/* ---------- 底部固定转化条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:30;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  height:64px;padding:0 16px;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(15,27,43,.10);
  opacity:0;transform:translateY(100%);
  transition:opacity .2s ease,transform .2s ease;
}
.bottom-bar.show{opacity:1;transform:translateY(0)}
.bottom-bar span{font-size:13.5px;color:var(--body);max-width:56vw}
.bottom-bar .btn{height:44px;padding:0 20px;font-size:14px;flex:0 0 auto}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .section{padding:80px 0}
}
@media (max-width:1023px){
  .nav-links,.nav-search{display:none}
  .hamburger{display:block}
  .nav-inner{height:60px;gap:14px}
  .brand-text b{font-size:15px}
  .page-hero{padding:48px 0 56px}
  .page-hero__grid{grid-template-columns:1fr;gap:32px}
  .page-hero__media{order:2}
  .steps{grid-template-columns:repeat(2,1fr);gap:24px 20px}
  .step:nth-child(2)::after{display:none}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:64px 0}
  .bottom-bar{display:flex}
  body{padding-bottom:84px}
  .cta-wrap{padding-bottom:64px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .prep-grid,.rel-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:23px}
  .page-hero h1{font-size:29px}
  .hero-actions .btn{width:100%}
  .cta-block{padding:32px 22px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .steps{grid-template-columns:1fr}
  .step:not(:last-child)::after{display:none}
}

/* roulang page: category2 */
:root{
    --brand-900:#0C2E5C; --brand-700:#14549B; --brand-600:#1B63B5; --brand-500:#2A78CC; --brand-100:#E8F1FB;
    --accent-600:#E4620B; --accent-500:#FF7A1A; --accent-100:#FFF1E4;
    --ink:#0F1B2B; --body:#4A5A70; --muted:#7C8CA1; --line:#E4EAF1; --bg:#F5F7FA; --surface:#FFFFFF;
    --success:#12A67A; --warn:#D97706; --danger:#DC2626;
    --r-btn:10px; --r-card:16px; --r-lg:20px; --r-pill:999px;
    --sh-card:0 1px 2px rgba(15,27,43,.04), 0 8px 24px rgba(15,27,43,.05);
    --sh-hover:0 10px 28px rgba(15,27,43,.10);
    --sh-pop:0 16px 40px rgba(15,27,43,.14);
    --ease:cubic-bezier(.2,.7,.3,1);
    --nav-h:68px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--body);
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:var(--brand-700);text-decoration:none}
  a.inline-link{border-bottom:1px dashed var(--brand-500)}
  a.inline-link:hover{border-bottom-style:solid}
  button{font-family:inherit}
  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.35}
  h1{font-size:clamp(30px,4vw,46px);font-weight:700;letter-spacing:-.01em;line-height:1.25}
  h2{font-size:28px;font-weight:700}
  h3{font-size:20px;font-weight:600;line-height:1.5}
  p{margin:0 0 1.15em}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  .section{padding:96px 0;scroll-margin-top:88px}
  .section--tight{padding:72px 0}
  .section-head{max-width:720px;margin-bottom:40px}
  .section-head p{font-size:16px;color:var(--body);margin:12px 0 0}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.06em;color:var(--brand-700);text-transform:none;margin-bottom:14px}
  .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--accent-600)}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:40;height:var(--nav-h);
    background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
    transition:box-shadow .2s var(--ease);
  }
  .site-header.scrolled{box-shadow:0 6px 22px rgba(15,27,43,.08)}
  .nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;text-decoration:none}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
    background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;font-size:15px;color:var(--ink)}
  .brand-text b{font-weight:800;letter-spacing:.01em}
  .brand-text span{font-size:12px;font-weight:500;color:var(--muted);letter-spacing:.02em}
  .nav-links{display:flex;align-items:center;gap:4px;flex:1;margin-left:6px}
  .nav-link{
    position:relative;padding:8px 12px;border-radius:8px;font-size:14.5px;font-weight:500;
    color:var(--body);white-space:nowrap;transition:color .16s var(--ease),background .16s var(--ease);
  }
  .nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
  .nav-link.active{color:var(--brand-700);font-weight:600}
  .nav-link.active::after{
    content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
    width:60%;height:2px;border-radius:2px;background:var(--brand-600);
  }
  .nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
  .nav-search{
    display:flex;align-items:center;gap:8px;height:38px;width:230px;padding:0 14px;
    background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);
    transition:background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:13.5px;color:var(--ink)}
  .nav-search input::placeholder{color:var(--muted)}
  .nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100)}
  .nav-btn{height:38px;padding:0 16px;font-size:14px}

  .hamburger{
    display:none;position:relative;width:40px;height:40px;border-radius:10px;
    background:#fff;border:1px solid var(--line);cursor:pointer;flex-shrink:0;
  }
  .hamburger span{position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;background:var(--ink);transform:translate(-50%,-50%)}
  .hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink)}
  .hamburger span::before{top:-6px}
  .hamburger span::after{top:6px}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:var(--r-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .btn-sm{height:44px;padding:0 20px;font-size:14px}
  .btn-lg{height:52px;padding:0 28px;font-size:15.5px}
  .btn-accent{background:var(--accent-600);color:#fff}
  .btn-accent:hover{background:#c9540a;transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
  .btn-primary{background:var(--brand-600);color:#fff}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16)}
  .btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
  .btn-outline:hover{border-color:var(--brand-500);background:var(--brand-100)}
  .btn:active{transform:translateY(0)}
  .arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700)}
  .arrow-link svg{transition:transform .2s var(--ease)}
  .arrow-link:hover svg{transform:translateX(3px)}

  /* ---------- Badge ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);
    background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:600;
  }
  .badge-accent{background:var(--accent-100);color:var(--accent-600)}
  .badge-ghost{background:rgba(255,255,255,.14);color:#fff}

  /* ---------- Banner ---------- */
  .banner{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
  .banner-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center right}
  .banner-overlay{
    position:absolute;inset:0;
    background:linear-gradient(96deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.90) 42%,rgba(232,241,251,.66) 78%,rgba(232,241,251,.42) 100%);
  }
  .banner-inner{position:relative;padding:64px 0 60px;max-width:700px}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
  .crumb a{color:var(--muted)}
  .crumb a:hover{color:var(--brand-700)}
  .crumb span.sep{color:#C6D2E0}
  .banner h1{margin:14px 0 16px}
  .banner-lead{font-size:17px;color:var(--body);max-width:34em;margin:0 0 26px}
  .banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
  .trust-row{display:flex;flex-wrap:wrap;gap:10px}

  /* ---------- Cards ---------- */
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-card);padding:28px;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D6E2F0}
  .card h3{margin-bottom:10px}
  .card p{margin:0;font-size:14.5px;line-height:1.8;color:var(--body)}
  .icon-box{
    width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:var(--brand-100);color:var(--brand-700);margin-bottom:18px;
  }
  .grid-2x2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

  /* ---------- Compare table ---------- */
  .table-shell{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
  .table-scroll{overflow-x:auto}
  table.compare{width:100%;min-width:680px;border-collapse:collapse;font-size:14.5px}
  table.compare caption{text-align:left;padding:22px 26px 4px;font-size:13px;color:var(--muted)}
  table.compare th{
    background:var(--brand-100);color:var(--brand-900);font-weight:600;font-size:13.5px;
    text-align:left;padding:14px 26px;white-space:nowrap;
  }
  table.compare td{padding:16px 26px;border-top:1px solid var(--line);vertical-align:top;color:var(--body)}
  table.compare tbody tr:nth-child(even){background:#F8FAFC}
  table.compare td.strong{color:var(--ink);font-weight:600}
  .mark-ok,.mark-no{display:inline-flex;align-items:center;gap:8px}
  .mark-ok::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--success);flex-shrink:0;margin-top:1px}
  .mark-no::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--warn);flex-shrink:0;margin-top:1px}
  .hint-bar{
    display:flex;gap:12px;align-items:flex-start;margin-top:20px;padding:16px 20px;
    background:var(--accent-100);border-radius:var(--r-card);font-size:14px;color:#8A3F09;line-height:1.75;
  }
  .hint-bar svg{flex-shrink:0;margin-top:3px}

  /* ---------- Dark section ---------- */
  .dark-block{background:var(--ink);border-radius:var(--r-lg);padding:52px 48px;color:rgba(255,255,255,.72)}
  .dark-block h2{color:#fff;margin-bottom:14px}
  .dark-block > p{color:rgba(255,255,255,.68);max-width:44em;margin-bottom:32px}
  .path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
  .path-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:24px;transition:background .2s var(--ease),transform .2s var(--ease)}
  .path-card:hover{background:rgba(255,255,255,.10);transform:translateY(-4px)}
  .path-num{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent-500);margin-bottom:12px}
  .path-card h3{color:#fff;font-size:17px;margin-bottom:8px}
  .path-card p{margin:0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66)}

  /* ---------- Related ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .rel-card{
    display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-card);color:inherit;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
  .rel-card .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-100)}
  .rel-body{padding:22px 22px 24px}
  .rel-body h3{font-size:17px;margin:12px 0 8px}
  .rel-card:hover h3{color:var(--brand-700)}
  .rel-body p{margin:0;font-size:14px;color:var(--body);line-height:1.75}
  .rel-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

  /* ---------- CTA ---------- */
  .cta-block{
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    background:var(--brand-100);border-radius:var(--r-lg);padding:40px;
  }
  .cta-block h2{font-size:24px;margin-bottom:8px}
  .cta-block p{margin:0;font-size:15px;color:var(--body)}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:rgba(255,255,255,.70);margin-top:96px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
  .footer-brand .brand-mark{background:rgba(255,255,255,.10)}
  .footer-brand .brand-text{color:#fff}
  .footer-brand .brand-text b{color:#fff}
  .footer-brand .brand-text span{color:rgba(255,255,255,.60)}
  .footer-grid p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
  .footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
  .footer-list li{margin-bottom:10px}
  .footer-list a{position:relative;display:inline-block;padding-left:0;font-size:14px;color:rgba(255,255,255,.70);transition:color .16s var(--ease),padding-left .16s var(--ease)}
  .footer-list a::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:2px;height:0;background:var(--accent-500);border-radius:2px;transition:height .16s var(--ease);
  }
  .footer-list a:hover{color:#fff;padding-left:10px}
  .footer-list a:hover::before{height:14px}
  .footer-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .footer-chips span{
    font-size:12.5px;padding:4px 12px;border-radius:var(--r-pill);
    background:rgba(255,255,255,.08);color:rgba(255,255,255,.70);border:1px solid rgba(255,255,255,.10);
  }
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
    padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:rgba(255,255,255,.52);
  }
  .footer-bottom p{margin:0}
  .legal{display:flex;align-items:center;gap:16px}
  .to-top{
    width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid rgba(255,255,255,.24);color:#fff;cursor:pointer;
    transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
  }
  .to-top:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.44);transform:translateY(-2px)}

  /* ---------- Mobile drawer ---------- */
  .drawer-mask{position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:60}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;background:#fff;z-index:61;
    transform:translateX(100%);transition:transform .26s var(--ease);
    padding:20px 20px calc(24px + env(safe-area-inset-bottom));overflow-y:auto;
  }
  body.drawer-open{overflow:hidden}
  body.drawer-open .drawer{transform:translateX(0)}
  body.drawer-open .drawer-mask{opacity:1;visibility:visible}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
  .drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;font-size:18px;line-height:1}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;background:var(--bg);
    border:1px solid var(--line);border-radius:var(--r-pill);margin-bottom:18px;
  }
  .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink)}
  .drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
  .drawer-links a{padding:12px 12px;border-radius:10px;font-size:15px;color:var(--body);font-weight:500}
  .drawer-links a:hover{background:var(--brand-100);color:var(--brand-700)}
  .drawer-links a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600}
  .drawer-actions{display:flex;flex-direction:column;gap:12px}

  /* ---------- Mobile bottom bar ---------- */
  .mobile-bar{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:50;
    height:64px;padding:0 16px env(safe-area-inset-bottom);
    background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(15,27,43,.10);
    align-items:center;justify-content:space-between;gap:12px;
  }
  .mobile-bar p{margin:0;font-size:13px;color:var(--body);line-height:1.4}

  /* ---------- Responsive ---------- */
  @media (max-width:1023px){
    .nav-links,.nav-search{display:none}
    .hamburger{display:block}
    .nav-btn:not(.hamburger){display:none}
    .section{padding:64px 0}
    .section--tight{padding:56px 0}
    .banner-inner{padding:52px 0 48px;max-width:none}
    .grid-2x2{grid-template-columns:repeat(2,minmax(0,1fr))}
    .path-grid{grid-template-columns:1fr}
    .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .rel-grid > *:last-child{grid-column:span 2}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px}
    .dark-block{padding:40px 28px}
    .cta-block{flex-direction:column;align-items:flex-start;padding:32px}
    .mobile-bar{display:flex;opacity:0;transform:translateY(100%);pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease)}
    .mobile-bar.show{opacity:1;transform:translateY(0);pointer-events:auto}
    body{padding-bottom:64px}
    .site-footer{margin-top:64px}
  }
  @media (max-width:639px){
    .container{padding:0 16px}
    .section{padding:52px 0}
    .section--tight{padding:48px 0}
    :root{--nav-h:56px}
    .brand-text{font-size:14px}
    .grid-2x2{grid-template-columns:1fr}
    .rel-grid{grid-template-columns:1fr}
    .rel-grid > *:last-child{grid-column:auto}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .banner-inner{padding:44px 0 42px}
    .banner-lead{font-size:16px}
    .card{padding:22px}
    .btn{width:100%}
    .banner-actions{gap:12px}
    .btn.btn-inline{width:auto}
    .mobile-bar .btn{width:auto}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
    .legal{width:100%;justify-content:space-between}
  }

/* roulang page: category3 */
:root{
  --brand-900:#0C2E5C;
  --brand-700:#14549B;
  --brand-600:#1B63B5;
  --brand-500:#2A78CC;
  --brand-100:#E8F1FB;
  --accent-600:#E4620B;
  --accent-500:#FF7A1A;
  --accent-100:#FFF1E4;
  --ink:#0F1B2B;
  --body:#4A5A70;
  --muted:#7C8CA1;
  --line:#E4EAF1;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --success:#12A67A;
  --warn:#D97706;
  --danger:#DC2626;
  --r-btn:10px;
  --r-card:16px;
  --r-big:20px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(15,27,43,.04), 0 8px 24px rgba(15,27,43,.05);
  --sh-hover:0 10px 28px rgba(15,27,43,.10);
  --sh-float:0 16px 40px rgba(15,27,43,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ 基础 reset ============ */
html{scroll-behavior:smooth;}
html body{
  margin:0;
  padding:0 0 0 0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
html p{margin:0 0 1.15em;}
html h1,html h2,html h3,html h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
html ul,html ol{margin:0;padding:0;list-style:none;}
html img{max-width:100%;display:block;}
html a{color:inherit;text-decoration:none;}
html button{font:inherit;background:none;border:0;cursor:pointer;color:inherit;}
html input{font:inherit;}
html table{border-collapse:collapse;width:100%;}
html summary{cursor:pointer;}
html summary::-webkit-details-marker{display:none;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16);}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,27,43,.16);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700);}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-100);transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:14.5px;}
.arrow-link svg{transition:transform .2s var(--ease);}
.arrow-link:hover svg{transform:translateX(3px);}
.arrow-link:hover{color:var(--brand-900);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(15,27,43,.06);}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;
}
.brand-text{display:flex;align-items:baseline;gap:1px;font-size:16px;color:var(--ink);line-height:1.2;}
.brand-text b{font-weight:700;letter-spacing:-.01em;}
.brand-text span{font-weight:400;color:var(--body);}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;padding:10px 12px;border-radius:8px;
  font-size:14.5px;color:var(--body);transition:color .18s var(--ease), background .18s var(--ease);
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100);}
.nav-link.active{color:var(--brand-700);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;width:60%;bottom:2px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:230px;padding:0 14px;
  background:var(--bg);border:1px solid transparent;border-radius:var(--r-pill);
  transition:background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-100);}
.nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink);}
.nav-search input::placeholder{color:var(--muted);}
.nav-btn{height:40px;padding:0 18px;font-size:14px;}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--line);align-items:center;justify-content:center;background:#fff;
}
.hamburger span,.hamburger span::before,.hamburger span::after{
  display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;transition:.2s var(--ease);
}
.hamburger span::before{content:"";position:absolute;top:-6px;}
.hamburger span::after{content:"";position:absolute;top:6px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease), visibility .25s var(--ease);z-index:60;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;background:#fff;z-index:70;
  transform:translateX(100%);transition:transform .28s var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--body);}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{padding:12px 12px;border-radius:10px;color:var(--ink);font-size:15px;}
.drawer-links a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.drawer-actions .btn{width:100%;}

/* ============ 页面头 ============ */
.page-hero{padding:52px 0 8px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
.crumb a:hover{color:var(--brand-700);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;background:var(--brand-100);color:var(--brand-700);
}
.badge-accent{background:var(--accent-100);color:var(--accent-600);}
.hero-title{font-size:clamp(30px,4vw,46px);line-height:1.25;margin:14px 0 14px;}
.hero-title em{font-style:normal;color:var(--brand-700);}
.hero-sub{font-size:17px;color:var(--body);max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:12.5px;color:var(--body);
}
.chip svg{flex:0 0 14px;}
.hero-figure{
  position:relative;border-radius:var(--r-big);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-card);aspect-ratio:4/3;background:var(--brand-100);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(232,241,251,.06),rgba(15,27,43,.14));
}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:12.5px;color:#fff;
  background:rgba(15,27,43,.52);text-align:center;
}

/* ============ 板块通用 ============ */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;}
.section-title{font-size:28px;line-height:1.35;}
.section-desc{margin-top:10px;font-size:15px;color:var(--muted);max-width:46em;}
.surface-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-big);box-shadow:var(--sh-card);}

/* ============ 步骤流 ============ */
.steps{position:relative;margin-top:6px;}
.steps::before{
  content:"";position:absolute;left:33px;top:26px;bottom:34px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--line));
}
.step{position:relative;display:flex;gap:26px;padding-bottom:34px;}
.step:last-child{padding-bottom:0;}
.step-num{
  position:relative;z-index:1;flex:0 0 68px;width:68px;height:68px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-card);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;color:var(--brand-700);
}
.step-body{flex:1;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-card);transition:transform .2s var(--ease), box-shadow .2s var(--ease);}
.step-body:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.step-body h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.step-body p{margin:0;font-size:15px;color:var(--body);}
.step-tip{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13px;
  color:var(--warn);background:#FFFBEB;border:1px solid #FDE9C0;border-radius:var(--r-pill);padding:4px 12px;
}
.steps-figure{margin-top:34px;border-radius:var(--r-big);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card);}
.steps-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.steps-figure figcaption{font-size:13px;color:var(--muted);text-align:center;padding:12px;background:#fff;}

/* ============ 速查表 ============ */
.table-wrap{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--line);background:#fff;box-shadow:var(--sh-card);}
table.lookup{min-width:720px;font-size:14.5px;}
table.lookup thead th{
  background:var(--brand-100);color:var(--brand-900);font-weight:600;font-size:13.5px;
  text-align:left;padding:14px 18px;white-space:nowrap;
}
table.lookup tbody td{padding:14px 18px;border-top:1px solid var(--line);color:var(--body);vertical-align:top;}
table.lookup tbody tr:nth-child(even){background:var(--bg);}
table.lookup tbody td:first-child{color:var(--ink);font-weight:600;}
.table-note{margin-top:12px;font-size:13px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .18s var(--ease), background .18s var(--ease);
}
.faq-item summary:hover{background:var(--brand-100);}
.faq-item summary::after{
  content:"+";flex:0 0 26px;width:26px;height:26px;border-radius:var(--r-pill);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;color:var(--brand-700);background:#fff;transition:.2s var(--ease);
}
.faq-item[open] summary{color:var(--brand-700);}
.faq-item[open] summary::after{content:"−";background:var(--accent-500);border-color:var(--accent-500);color:#fff;}
.faq-body{padding:0 24px 20px;font-size:15px;color:var(--body);}
.faq-body p{margin:0;}
.faq-body ul{display:flex;flex-direction:column;gap:8px;margin-top:8px;}
.faq-body li{position:relative;padding-left:16px;}
.faq-body li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand-500);}

/* ============ 相关分类卡 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cat-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D3DFEC;}
.cat-thumb{aspect-ratio:16/9;background:var(--brand-100);overflow:hidden;}
.cat-thumb img{width:100%;height:100%;object-fit:cover;}
.cat-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1;}
.cat-body h3{font-size:18px;font-weight:600;transition:color .2s var(--ease);}
.cat-card:hover .cat-body h3{color:var(--brand-700);}
.cat-body p{margin:0;font-size:14px;color:var(--muted);}
.cat-card .arrow-link{margin-top:auto;}
.current-flag{font-size:12.5px;color:var(--accent-600);font-weight:600;}

/* ============ CTA ============ */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--r-big);
  background:var(--brand-100);border:1px solid #D6E4F5;
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.20;
}
.cta-inner{position:relative;z-index:1;}
.cta-inner h2{font-size:24px;margin-bottom:8px;}
.cta-inner p{margin:0;font-size:15px;color:var(--body);}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:80px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#1B2C42;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text span{color:rgba(255,255,255,.72);}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;}
.site-footer p{margin:0 0 10px;font-size:14px;line-height:1.8;}
.footer-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.footer-chips span{
  font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.8);
}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{
  position:relative;display:inline-block;padding-left:0;font-size:14px;color:rgba(255,255,255,.72);
  transition:color .16s var(--ease), padding-left .16s var(--ease);
}
.footer-list a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--accent-500);transition:height .16s var(--ease);
}
.footer-list a:hover{color:#fff;padding-left:10px;}
.footer-list a:hover::before{height:14px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.6);}
.legal{display:flex;align-items:center;gap:16px;font-size:13px;color:rgba(255,255,255,.6);}
.to-top{
  width:38px;height:38px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.28);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s var(--ease), transform .2s var(--ease);
}
.to-top:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}

/* ============ 底部固定转化条 ============ */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  height:64px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(15,27,43,.10);
  transform:translateY(14px);opacity:0;transition:opacity .2s var(--ease), transform .2s var(--ease);
}
.mobile-cta.show{opacity:1;transform:translateY(0);}
.mobile-cta span{font-size:13.5px;color:var(--body);}
.mobile-cta .btn{height:44px;padding:0 20px;font-size:14px;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links,.nav-search,.nav-btn{display:none;}
  .hamburger{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-figure{order:2;}
  .section{padding:60px 0;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-cta{display:flex;}
  html body{padding-bottom:80px;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .nav-inner{height:56px;}
  .brand-text{font-size:15px;}
  .page-hero{padding:34px 0 4px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:24px;}
  .section-title{font-size:23px;}
  .steps::before{left:24px;}
  .step{gap:16px;}
  .step-num{flex:0 0 50px;width:50px;height:50px;font-size:18px;}
  .step-body{padding:18px;}
  .cat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .hero-actions .btn{width:100%;}
}