/* roulang page: index */
:root{
  --c-primary:#1A63B0;
  --c-primary-deep:#0E4478;
  --c-primary-light:#EAF2FB;
  --c-accent:#FF7A2F;
  --c-accent-light:#FFF2E9;
  --c-support:#16A394;
  --c-ink:#14202E;
  --c-ink-2:#46586D;
  --c-ink-3:#8395A8;
  --c-line:#E5EBF2;
  --c-bg:#F7F9FC;
  --r-card:14px;
  --r-btn:10px;
  --sd-1:0 6px 20px rgba(16,42,74,.06);
  --sd-2:0 14px 32px rgba(16,42,74,.12);
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
h1{font-size:44px;line-height:1.25}
h2{font-size:32px;line-height:1.3}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-deep);text-decoration:underline}
img{max-width:100%;display:block}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
[id]{scroll-margin-top:84px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-white{background:#fff}
.section-tint{background:var(--c-primary-light)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .28s ease;text-decoration:none;line-height:1}
.btn:hover{text-decoration:none}
.btn i{font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(26,99,176,.26)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-accent:hover{background:#EF6919;border-color:#EF6919;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.3)}
.btn-ghost{background:#fff;border-color:#D7E2EE;color:var(--c-primary)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-light);color:var(--c-primary);text-decoration:none}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(26,99,176,.25)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px}
.btn-link:hover{text-decoration:none;color:var(--c-primary-deep)}
.btn-link .arw{transition:transform .25s ease}
.btn-link:hover .arw{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge-soft{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--c-primary-light);color:var(--c-primary);font-size:12px;font-weight:600;white-space:nowrap}
.badge-accent{background:var(--c-accent);color:#fff}
.badge-mint{background:rgba(22,163,148,.12);color:var(--c-support)}

/* ============ 页头 ============ */
.site-header{position:relative;z-index:1030;background:#fff}
.brand-bar{background:#fff;border-bottom:1px solid var(--c-line)}
.brand-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--c-primary);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{display:block}
.brand-text{font-size:18px;font-weight:700;color:var(--c-ink);white-space:nowrap}
.brand-tools{margin-left:auto;display:flex;align-items:center;gap:16px}
.search-box{position:relative}
.search-box input{width:220px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);padding:0 14px 0 38px;font-size:14px;color:var(--c-ink);background:#fff;outline:none;transition:all .2s ease}
.search-box input::placeholder{color:var(--c-ink-3)}
.search-box input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(26,99,176,.2)}
.search-box .search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--c-ink-3);font-size:13px;pointer-events:none}
.link-quiet{font-size:14px;color:var(--c-ink-2)}
.link-quiet:hover{color:var(--c-primary);text-decoration:none}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;color:var(--c-ink);font-size:16px;align-items:center;justify-content:center}

.channel-bar{position:sticky;top:0;z-index:1020;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease}
.channel-bar.is-stuck{box-shadow:0 2px 10px rgba(16,42,74,.06)}
.channel-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-pill{flex:0 0 auto;height:34px;display:inline-flex;align-items:center;padding:0 16px;border-radius:999px;font-size:14px;font-weight:600;color:var(--c-ink-2);transition:all .2s ease}
.channel-pill:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none}
.channel-pill.active{background:var(--c-primary);color:#fff}
.channel-pill.active:hover{color:#fff}

/* ============ 抽屉 ============ */
.mobile-drawer{position:fixed;top:0;right:-320px;width:300px;height:100%;background:#fff;z-index:1080;padding:24px 22px;transition:right .3s ease;overflow-y:auto;box-shadow:-8px 0 30px rgba(16,42,74,.12)}
.mobile-drawer.open{right:0}
.mobile-drawer h4{font-size:14px;color:var(--c-ink-3);font-weight:600;margin-bottom:14px}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px}
.mobile-drawer nav a{display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:var(--r-btn);font-size:15px;font-weight:600;color:var(--c-ink-2)}
.mobile-drawer nav a:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none}
.mobile-drawer nav a.active{background:var(--c-primary);color:#fff}
.mobile-drawer .btn{width:100%}
.drawer-mask{position:fixed;inset:0;background:rgba(20,32,46,.45);z-index:1070;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}
.drawer-mask.open{opacity:1;visibility:visible}

/* ============ Hero ============ */
.hero{background:var(--c-primary-light);padding:72px 0 88px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:#fff;color:var(--c-primary);font-size:13px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:44px;margin-bottom:20px}
.hero h1 .hl{color:var(--c-primary)}
.hero-sub{font-size:18px;line-height:1.8;color:var(--c-ink-2);max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-badges{display:flex;gap:22px;flex-wrap:wrap}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.hero-badge i{color:var(--c-support);font-size:13px}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sd-1);background:var(--c-primary-light)}
.hero-visual img{width:100%;height:390px;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,68,120,0) 42%,rgba(14,68,120,.8) 100%)}
.hero-visual-caption{position:absolute;left:26px;right:26px;bottom:24px;z-index:2;color:#fff}
.hero-visual-caption strong{display:block;font-size:17px;font-weight:700;margin-bottom:4px}
.hero-visual-caption span{font-size:13px;color:rgba(255,255,255,.85)}

/* ============ 板块标题 ============ */
.sec-head{max-width:740px;margin-bottom:48px}
.sec-head.middle{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{font-size:13px;font-weight:700;color:var(--c-primary);margin-bottom:12px}
.sec-head p{font-size:16px;color:var(--c-ink-2);margin:14px 0 0}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}

/* ============ 价值主张 ============ */
.value-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.value-side p{margin:16px 0 0;font-size:15px;line-height:1.8}
.value-list{border-top:1px solid var(--c-line)}
.value-item{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:26px 0;border-bottom:1px solid var(--c-line)}
.value-num{width:44px;height:44px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary);font-weight:700;font-size:15px;display:grid;place-items:center;font-variant-numeric:tabular-nums}
.value-item h3{margin-bottom:6px;font-size:18px}
.value-item p{margin:0;font-size:15px;line-height:1.75}

/* ============ 功能区 ============ */
.feature-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.feature-tab{height:40px;padding:0 20px;border-radius:999px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink-2);font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}
.feature-tab:hover{border-color:var(--c-primary);color:var(--c-primary)}
.feature-tab.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.feature-tab:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(26,99,176,.25)}
.feature-panel{display:none}
.feature-panel.active{display:grid;grid-template-columns:1.3fr 1fr;gap:24px}
.feature-hero{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sd-1);transition:transform .28s ease,box-shadow .28s ease}
.feature-hero:hover{transform:translateY(-2px);box-shadow:var(--sd-2)}
.feature-hero img{width:100%;height:230px;object-fit:cover}
.feature-hero-body{padding:26px 26px 28px}
.feature-hero-body h3{font-size:20px;margin-bottom:10px}
.feature-hero-body p{margin:0;font-size:15px;line-height:1.8}
.feature-side{display:grid;gap:16px;align-content:start}
.feature-mini{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sd-1);transition:transform .28s ease,box-shadow .28s ease}
.feature-mini:hover{transform:translateY(-2px);box-shadow:var(--sd-2)}
.feature-mini h4{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.feature-mini h4 i{color:var(--c-primary);font-size:13px}
.feature-mini p{margin:0;font-size:14px;line-height:1.7;color:var(--c-ink-2)}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border-top:2px solid var(--c-line);padding-top:24px;position:relative}
.step::before{content:attr(data-step);position:absolute;top:-15px;left:0;width:28px;height:28px;border-radius:50%;background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);font-size:13px;font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums}
.step h3{font-size:16px;margin-bottom:8px}
.step p{margin:0;font-size:14px;line-height:1.7}

/* ============ 统计条 ============ */
.stat-band{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:44px 0}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr)}
.stat-cell{text-align:center;padding:0 20px;border-right:1px solid var(--c-line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-size:36px;font-weight:700;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{font-size:14px;color:var(--c-ink-3);margin-top:4px}

/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.case-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sd-1);transition:transform .28s ease,box-shadow .28s ease}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--sd-2)}
.case-card.lift{margin-top:44px}
.case-quote{font-size:17px;line-height:1.85;color:var(--c-ink);margin-bottom:24px}
.case-meta{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-ink-3);padding-top:20px;border-top:1px solid var(--c-line)}
.case-figure{font-size:34px;font-weight:700;color:var(--c-accent);line-height:1.2;margin-top:14px;font-variant-numeric:tabular-nums}
.case-figure-label{font-size:14px;color:var(--c-ink-3)}

/* ============ 帮助档位 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan-card{background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-card);padding:30px 28px;transition:transform .28s ease,box-shadow .28s ease}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--sd-1)}
.plan-card.hot{background:#fff;border:2px solid var(--c-primary);box-shadow:var(--sd-2);transform:translateY(-12px);position:relative}
.plan-card.hot:hover{transform:translateY(-14px);box-shadow:var(--sd-2)}
.plan-flag{position:absolute;top:-14px;left:28px}
.plan-name{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:8px}
.plan-desc{font-size:14px;color:var(--c-ink-2);margin-bottom:22px;line-height:1.7}
.plan-list{display:grid;gap:12px;margin-bottom:26px}
.plan-list li{display:flex;gap:10px;font-size:14px;line-height:1.65;color:var(--c-ink-2)}
.plan-list i{color:var(--c-support);font-size:13px;margin-top:5px;flex:0 0 auto}
.plan-card .btn{width:100%}

/* ============ 资讯列表 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sd-1);transition:transform .28s ease,box-shadow .28s ease}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sd-2);text-decoration:none}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-light)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.5;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{font-size:14px;line-height:1.7;color:var(--c-ink-2);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-3);border-top:1px solid var(--c-line);padding-top:14px}
.news-arrow{color:var(--c-primary);font-weight:600}
.news-empty{max-width:560px;margin:0 auto;text-align:center;border:1px dashed #C9D8E8;border-radius:var(--r-card);background:#fff;padding:48px 32px}
.news-empty-icon{width:56px;height:56px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary);display:grid;place-items:center;margin:0 auto 18px;font-size:20px}
.news-empty p{font-size:15px;color:var(--c-ink-2);margin:0 0 20px}
.news-more{display:flex;justify-content:center;margin-top:32px}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sd-1);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:17px;font-weight:600;color:var(--c-ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:none;box-shadow:inset 0 0 0 3px rgba(26,99,176,.2)}
.faq-plus{flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;color:var(--c-ink-3);font-size:20px;line-height:1;transition:transform .28s ease,color .28s ease}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--c-primary)}
.faq-item[open] summary{border-bottom:1px dashed var(--c-line)}
.faq-answer{padding:18px 24px 22px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}
.faq-answer p:last-child{margin-bottom:0}

/* ============ 底部 CTA ============ */
.cta-band{background:var(--c-primary-deep);padding:72px 0;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.82);max-width:640px;margin:14px auto 30px;font-size:16px}
.cta-band .btn{background:#fff;border-color:#fff;color:var(--c-primary)}
.cta-band .btn:hover{background:var(--c-primary-light);border-color:var(--c-primary-light);color:var(--c-primary-deep)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-deep);color:#fff;padding:64px 0 32px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.16)}
.footer-brand strong{font-size:17px;color:#fff;font-weight:700}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.75);max-width:340px;margin:0}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.78);line-height:1.6}
.footer-col a{display:inline-block;font-size:14px;color:rgba(255,255,255,.78);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;text-decoration:none;transform:translateX(3px)}
.footer-bottom{padding-top:28px;text-align:center;font-size:13px;color:rgba(255,255,255,.6);line-height:1.8}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .hero-visual img{height:340px}
  .value-grid{gap:36px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .hero-sub{font-size:17px;max-width:none}
  .value-grid{grid-template-columns:1fr;gap:28px}
  .feature-panel.active{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr}
  .case-card.lift{margin-top:0}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-card.hot{transform:none;order:-1}
  .plan-card.hot:hover{transform:translateY(-2px)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:17px;line-height:1.9}
  .container{padding:0 20px}
  h1{font-size:30px}
  h2{font-size:24px}
  .hero h1{font-size:30px}
  .hero-visual img{height:250px}
  .section{padding:48px 0}
  .sec-head{margin-bottom:32px}
  .brand-inner{height:56px}
  .brand-text{font-size:16px}
  .search-box,.link-quiet{display:none}
  .nav-toggle{display:inline-flex}
  .brand-tools .btn-accent{display:none}
  .steps{grid-template-columns:1fr}
  .step{border-top:0;border-left:2px solid var(--c-line);padding:0 0 26px 28px}
  .step::before{top:0;left:-15px}
  .step:last-child{padding-bottom:0}
  .stat-grid{grid-template-columns:1fr;gap:24px}
  .stat-cell{border-right:0;border-bottom:1px solid var(--c-line);padding:0 0 20px}
  .stat-cell:last-child{border-bottom:0;padding-bottom:0}
  .news-grid{grid-template-columns:1fr}
  .feature-hero img{height:190px}
  .case-card,.plan-card{padding:24px 22px}
  .cta-band{padding:52px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .news-head{margin-bottom:28px}
}
@media (max-width:575px){
  .container{padding:0 16px}
  h1{font-size:26px}
  .hero h1{font-size:26px}
  h2{font-size:22px}
  .hero-cta .btn{width:100%}
  .hero-badges{gap:14px}
  .value-item{grid-template-columns:44px 1fr;gap:14px}
  .value-num{width:38px;height:38px;font-size:14px}
  .btn{height:46px;padding:0 20px}
}

/* roulang page: article */
:root{
  --c-primary:#1A63B0;
  --c-primary-dark:#0E4478;
  --c-primary-light:#EAF2FB;
  --c-accent:#FF7A2F;
  --c-accent-light:#FFF2E9;
  --c-support:#16A394;
  --c-ink:#14202E;
  --c-ink-2:#46586D;
  --c-ink-3:#8395A8;
  --c-line:#E5EBF2;
  --c-bg:#F7F9FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 6px 20px rgba(16,42,74,.06);
  --sh-hover:0 14px 32px rgba(16,42,74,.12);
  --t:.28s ease;
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  text-align:left;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:var(--t);}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-family:var(--font-cn);}
p{margin:0 0 1em;}
:focus-visible{outline:3px solid rgba(26,99,176,.35);outline-offset:2px;border-radius:6px;}
.container,.container-fluid{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.row{--bs-gutter-x:24px;}
/* ============ 导航 ============ */
.site-header{position:relative;z-index:1030;background:#fff;}
.brand-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-ink);text-decoration:none;flex:0 1 auto;min-width:0;}
.brand:hover{color:var(--c-primary);text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  display:flex;align-items:center;justify-content:center;
}
.brand-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-tools{display:flex;align-items:center;gap:16px;}
.search-box{
  position:relative;display:flex;align-items:center;
  width:220px;height:40px;padding:0 12px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-bg);transition:var(--t);
}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--c-ink);line-height:1.4;
}
.search-box input::placeholder{color:var(--c-ink-3);}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(26,99,176,.2);}
.search-icon{color:var(--c-ink-3);font-size:13px;margin-right:8px;}
.link-quiet{font-size:14px;color:var(--c-ink-2);}
.link-quiet:hover{color:var(--c-primary);}
.btn{--bs-btn-border-radius:10px;border-radius:var(--r-btn);font-weight:600;}
.btn.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;font-size:14px;font-weight:600;
  background:var(--c-accent);border:1px solid var(--c-accent);color:#fff;
  border-radius:var(--r-btn);text-decoration:none;transition:var(--t);
}
.btn.btn-accent:hover{background:#F06A1C;border-color:#F06A1C;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(255,122,47,.28);text-decoration:none;}
.btn.btn-accent:active{transform:translateY(0);box-shadow:none;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);font-size:16px;cursor:pointer;transition:var(--t);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.channel-bar{
  position:sticky;top:0;z-index:1020;
  background:#fff;border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.channel-bar.is-stuck{box-shadow:0 2px 10px rgba(16,42,74,.06);}
.channel-inner{
  display:flex;align-items:center;gap:8px;height:48px;
  overflow-x:auto;scrollbar-width:none;
  padding-left:24px;padding-right:24px;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-pill{
  flex:0 0 auto;font-size:14px;line-height:1;
  color:var(--c-ink-2);padding:11px 16px;border-radius:var(--r-pill);
  text-decoration:none;white-space:nowrap;transition:var(--t);
}
.channel-pill:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none;}
.channel-pill.active{background:var(--c-primary);color:#fff;}
.channel-pill.active:hover{background:var(--c-primary-dark);color:#fff;}
/* ============ 文章容器 ============ */
.article-wrap{padding:28px 0 0;}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--c-ink-3);margin-bottom:18px;}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb-sep{color:#C3CFDC;}
.crumb-current{color:var(--c-ink);max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{padding-bottom:26px;border-bottom:1px solid var(--c-line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1.6;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary);text-decoration:none;transition:var(--t);
}
.tag:hover{background:#DBE9F8;color:var(--c-primary-dark);text-decoration:none;}
.tag.tag-accent{background:var(--c-accent-light);color:#D9600F;}
.article-head h1{
  font-size:44px;line-height:1.25;font-weight:700;color:var(--c-ink);
  margin:0 0 16px;max-width:900px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:14px;color:var(--c-ink-3);
}
.article-meta .dot{width:1px;height:12px;background:#D3DDE8;display:inline-block;}
.article-meta i{color:var(--c-ink-3);font-size:13px;}
/* ============ 布局：正文 + 目录 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 240px;
  gap:48px;align-items:start;padding:36px 0 0;
}
.article-main{min-width:0;}
.article-body{
  max-width:800px;font-size:17px;line-height:1.9;color:var(--c-ink-2);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body h2{
  font-size:26px;line-height:1.35;font-weight:700;color:var(--c-ink);
  margin:40px 0 16px;scroll-margin-top:72px;
}
.article-body h3{
  font-size:20px;line-height:1.5;font-weight:600;color:var(--c-ink);
  margin:32px 0 12px;scroll-margin-top:72px;
}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body p{margin:0 0 1.1em;}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body ul{margin:0 0 1.2em;padding-left:1.4em;}
.article-body ul li{margin-bottom:8px;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol{list-style:none;counter-reset:step;padding-left:0;margin:0 0 1.3em;}
.article-body ol>li{
  counter-increment:step;position:relative;
  padding-left:38px;margin-bottom:14px;
}
.article-body ol>li::before{
  content:counter(step);
  position:absolute;left:0;top:5px;width:24px;height:24px;border-radius:50%;
  background:var(--c-primary-light);color:var(--c-primary);
  font-size:13px;font-weight:700;line-height:24px;text-align:center;
}
.article-body blockquote{
  margin:24px 0;padding:20px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-light);border-radius:0 10px 10px 0;color:var(--c-ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--c-primary-light);color:var(--c-ink);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FBFCFE;}
.article-body img{width:100%;height:auto;border-radius:12px;margin:24px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:8px;}
.article-body code{background:var(--c-primary-light);color:var(--c-primary-dark);padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body pre{background:#0F1D30;color:#E7EFF9;padding:16px;border-radius:12px;overflow-x:auto;font-size:14px;}
.article-body .callout,.article-body .tip{
  margin:24px 0;padding:16px 20px;font-size:15px;line-height:1.8;
  background:var(--c-primary-light);border-left:3px solid var(--c-primary);border-radius:10px;color:var(--c-ink-2);
}
.article-body .callout.warn,.article-body .warn{background:#FFF7E6;border-left-color:#E4A11B;}
.article-body .callout p:last-child{margin-bottom:0;}
.article-empty{
  max-width:800px;background:#fff;border:1px dashed #CFDCEA;border-radius:var(--r-card);
  padding:48px 24px;text-align:center;
}
.article-empty i{font-size:28px;color:var(--c-ink-3);}
.article-empty p{margin:14px 0 20px;color:var(--c-ink-2);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;
  border:1px solid var(--c-primary);text-decoration:none;transition:var(--t);cursor:pointer;
}
.btn-main:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(16,42,74,.18);text-decoration:none;}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  background:#fff;border:1px solid #D7E2EE;color:var(--c-primary);
  font-size:15px;font-weight:600;text-decoration:none;transition:var(--t);cursor:pointer;
}
.btn-line:hover{border-color:var(--c-primary);background:var(--c-primary-light);color:var(--c-primary-dark);text-decoration:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--c-primary);background:none;border:0;padding:0;cursor:pointer;
}
.btn-text i{transition:transform var(--t);}
.btn-text:hover{color:var(--c-primary-dark);text-decoration:none;}
.btn-text:hover i{transform:translateX(4px);}
/* ============ 目录 ============ */
.article-toc{position:sticky;top:80px;}
.toc-title{
  font-size:14px;font-weight:600;color:var(--c-ink);
  margin-bottom:12px;display:flex;align-items:center;gap:8px;
}
.toc-title i{color:var(--c-primary);font-size:13px;}
.toc-list{list-style:none;margin:0;padding:0;max-height:66vh;overflow:auto;}
.toc-list a{
  display:block;font-size:14px;line-height:1.65;color:var(--c-ink-2);
  padding:6px 0 6px 12px;border-left:3px solid transparent;text-decoration:none;
}
.toc-list a:hover{color:var(--c-primary);border-left-color:#D2E3F5;}
.toc-list a.active{color:var(--c-primary);font-weight:700;border-left-color:var(--c-primary);}
.toc-mobile-wrap{display:none;margin-bottom:24px;}
.toc-mobile-toggle{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;height:48px;padding:0 16px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);
  font-size:14px;font-weight:600;color:var(--c-ink);cursor:pointer;
}
.toc-mobile-toggle i{transition:transform var(--t);color:var(--c-primary);}
.toc-mobile-toggle.open i{transform:rotate(180deg);}
.toc-mobile-list{display:none;background:#fff;border:1px solid var(--c-line);border-top:0;border-radius:0 0 var(--r-btn) var(--r-btn);padding:8px 16px;}
.toc-mobile-list.open{display:block;}
.toc-mobile-list a{display:block;font-size:14px;padding:10px 0;color:var(--c-ink-2);border-bottom:1px dashed var(--c-line);}
.toc-mobile-list a:last-child{border-bottom:0;}
/* ============ 文末 ============ */
.post-tags{display:flex;flex-wrap:wrap;gap:10px;max-width:800px;margin:44px 0 36px;padding-top:24px;border-top:1px solid var(--c-line);}
.post-tags .label{font-size:14px;color:var(--c-ink-3);margin-right:4px;}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:800px;margin-bottom:32px;}
.pager-card{
  display:flex;flex-direction:column;gap:6px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-card);transition:var(--t);text-decoration:none;
}
.pager-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);text-decoration:none;border-color:#D7E2EE;}
.pager-label{font-size:13px;color:var(--c-ink-3);display:flex;align-items:center;gap:6px;}
.pager-title{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;}
.pager-card:hover .pager-title{color:var(--c-primary);}
.pager-card.next{align-items:flex-end;text-align:right;}
.pager-card.next .pager-label{flex-direction:row-reverse;}
.back-line{max-width:800px;margin-bottom:56px;}
/* ============ 相关推荐 ============ */
.related{padding:0 0 8px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:32px;
}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--c-ink-3);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);transition:var(--t);text-decoration:none;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);text-decoration:none;border-color:#D7E2EE;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-light);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.info-card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-title{
  font-size:18px;line-height:1.6;font-weight:600;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card:hover .card-title{color:var(--c-primary);}
.card-desc{
  font-size:14px;line-height:1.7;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-ink-3);padding-top:10px;border-top:1px solid var(--c-line);
}
.card-foot i{color:var(--c-accent);transition:transform var(--t);}
.info-card:hover .card-foot i{transform:translateX(4px);}
/* ============ 底部 CTA ============ */
.cta-band{
  margin-top:72px;background:var(--c-primary-dark);border-radius:18px;
  padding:56px 32px;text-align:center;color:#fff;
}
.cta-band h2{color:#fff;font-size:32px;line-height:1.3;font-weight:700;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.8);max-width:640px;margin:0 auto 26px;}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  background:#fff;color:var(--c-primary);font-size:15px;font-weight:600;
  border:1px solid #fff;text-decoration:none;transition:var(--t);
}
.btn-white:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.18);text-decoration:none;}
/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;background:var(--c-primary-dark);color:#fff;
  padding:64px 0 32px;border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:17px;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.75);margin:0;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.78);}
.footer-col a{color:rgba(255,255,255,.8);display:inline-block;transition:var(--t);}
.footer-col a:hover{color:#fff;transform:translateX(3px);text-decoration:none;}
.footer-bottom{
  margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  text-align:center;font-size:13px;color:rgba(255,255,255,.65);
}
/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-toc{display:none;}
  .toc-mobile-wrap{display:block;}
}
@media (max-width:991.98px){
  .article-head h1{font-size:36px;}
  .section-head h2{font-size:28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-wrap{padding-top:24px;}
}
@media (max-width:767.98px){
  body{font-size:17px;line-height:1.9;}
  .container{padding-left:20px;padding-right:20px;}
  .channel-inner{padding-left:20px;padding-right:20px;}
  .article-head h1{font-size:30px;}
  .article-body{font-size:17px;line-height:1.9;}
  .article-body h2{font-size:24px;margin-top:32px;}
  .article-body h3{font-size:18px;margin-top:26px;}
  .brand-text{font-size:16px;}
  .search-box{width:150px;height:38px;}
  .link-quiet{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-bar{display:none;position:static;}
  .site-header.nav-open .channel-bar{display:block;border-top:1px solid var(--c-line);box-shadow:none;}
  .site-header.nav-open .channel-inner{height:auto;flex-direction:column;align-items:stretch;gap:4px;padding-top:12px;padding-bottom:12px;overflow:visible;}
  .site-header.nav-open .channel-pill{padding:12px 14px;border-radius:10px;}
  body.nav-open::before{content:"";position:fixed;inset:0;background:rgba(20,32,46,.45);z-index:1010;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager-card.next{align-items:flex-start;text-align:left;}
  .pager-card.next .pager-label{flex-direction:row;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .cta-band{padding:40px 20px;margin-top:56px;border-radius:14px;}
  .cta-band h2{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:24px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .site-footer{margin-top:64px;padding-top:48px;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .channel-inner{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:15px;}
  .brand{gap:8px;}
  .brand-mark{width:30px;height:30px;flex:0 0 30px;}
  .search-box{width:120px;}
  .btn.btn-accent{height:38px;padding:0 14px;font-size:13px;}
  .article-meta{gap:8px;font-size:13px;}
  .crumb-current{max-width:220px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1A63B0;
  --c-primary-dark:#0E4478;
  --c-primary-light:#EAF2FB;
  --c-accent:#FF7A2F;
  --c-accent-light:#FFF2E9;
  --c-support:#16A394;
  --c-ink:#14202E;
  --c-text:#46586D;
  --c-muted:#8395A8;
  --c-line:#E5EBF2;
  --c-bg:#F7F9FC;
  --c-card:#FFFFFF;
  --c-success:#16A394;
  --c-warn:#E4A11B;
  --c-error:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sd-card:0 6px 20px rgba(16,42,74,.06);
  --sd-card-hover:0 14px 32px rgba(16,42,74,.12);
  --sd-nav:0 2px 10px rgba(16,42,74,.06);
  --tr:.28s ease;
  --ff:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Inter",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:0;}
h1{font-size:44px;line-height:1.25;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;text-align:left;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(26,99,176,.35);outline-offset:2px;border-radius:6px;}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:576px){
  .container{padding:0 16px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:16px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  white-space:nowrap;
  transition:background var(--tr),color var(--tr),border-color var(--tr),box-shadow var(--tr),transform var(--tr);
}
.btn:hover{text-decoration:none;}
.btn-accent{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(26,99,176,.22);
}
.btn-accent:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(26,99,176,.28);}
.btn-accent:active{transform:translateY(0);box-shadow:0 4px 12px rgba(26,99,176,.22);}
.btn-outline-main{
  background:#fff;
  color:var(--c-primary);
  border-color:#D7E2EE;
}
.btn-outline-main:hover{background:var(--c-primary-light);border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn-light-solid{
  background:#fff;
  color:var(--c-primary);
  height:52px;
  padding:0 32px;
  box-shadow:0 10px 26px rgba(6,28,54,.24);
}
.btn-light-solid:hover{background:#F2F8FF;color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:auto;
  padding:0;
  border:0;
  background:none;
  color:var(--c-primary);
  font-size:15px;
  font-weight:600;
}
.btn-ghost i{transition:transform var(--tr);}
.btn-ghost:hover{text-decoration:none;color:var(--c-primary-dark);}
.btn-ghost:hover i{transform:translateX(4px);}

/* ---------- 页头 ---------- */
.site-header{
  position:relative;
  z-index:1030;
  background:#fff;
}
.brand-bar{
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.brand-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex:0 0 auto;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 34px;
  box-shadow:0 6px 14px rgba(26,99,176,.28);
}
.brand-text{
  font-size:19px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand-tools{
  display:flex;
  align-items:center;
  gap:16px;
  flex:1 1 auto;
  justify-content:flex-end;
}
.search-box{
  position:relative;
  width:220px;
  flex:0 1 220px;
}
.search-box input{
  width:100%;
  height:40px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:var(--c-bg);
  padding:0 14px 0 38px;
  font-size:14px;
  color:var(--c-ink);
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
}
.search-box input::placeholder{color:var(--c-muted);}
.search-box input:focus{
  outline:none;
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(26,99,176,.2);
}
.search-icon{
  position:absolute;
  left:13px;
  top:50%;
  transform:translateY(-50%);
  font-size:13px;
  color:var(--c-muted);
  pointer-events:none;
}
.link-quiet{
  font-size:14px;
  color:var(--c-text);
}
.link-quiet:hover{color:var(--c-primary);}
.brand-tools .btn-accent{
  height:40px;
  padding:0 18px;
  font-size:15px;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  font-size:17px;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background var(--tr),border-color var(--tr),color var(--tr);
}
.nav-toggle:hover{background:var(--c-primary-light);border-color:#C9DCF1;color:var(--c-primary);}

/* 频道行 */
.channel-bar{
  position:sticky;
  top:0;
  z-index:1020;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--tr);
}
.channel-bar.is-stuck{box-shadow:var(--sd-nav);}
.channel-inner{
  display:flex;
  align-items:center;
  gap:10px;
  height:48px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-pill{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 16px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:500;
  color:var(--c-text);
  white-space:nowrap;
  flex:0 0 auto;
  transition:background var(--tr),color var(--tr);
}
.channel-pill:hover{background:var(--c-primary-light);color:var(--c-primary-dark);text-decoration:none;}
.channel-pill.active{
  background:var(--c-primary);
  color:#fff;
  font-weight:600;
}
.channel-pill.active:hover{background:var(--c-primary-dark);color:#fff;}

/* 移动端抽屉 */
.nav-mask{
  position:fixed;
  inset:0;
  background:rgba(20,32,46,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);
  z-index:1040;
}
.nav-mask.show{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  width:82%;
  max-width:340px;
  height:100%;
  background:#fff;
  z-index:1050;
  transform:translateX(102%);
  transition:transform var(--tr);
  padding:20px;
  overflow-y:auto;
  box-shadow:-12px 0 32px rgba(16,42,74,.16);
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-title{
  font-size:13px;
  color:var(--c-muted);
  margin-bottom:12px;
  letter-spacing:.5px;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--c-ink);
  background:var(--c-bg);
  transition:background var(--tr),color var(--tr);
}
.drawer-nav a:hover{background:var(--c-primary-light);color:var(--c-primary-dark);text-decoration:none;}
.drawer-nav a.active{background:var(--c-primary);color:#fff;font-weight:600;}
.drawer-close{
  position:absolute;
  top:14px;
  right:14px;
  width:40px;
  height:40px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text);
  cursor:pointer;
}
.body-locked{overflow:hidden;}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  background-color:var(--c-primary-dark);
  background-image:linear-gradient(100deg,rgba(14,68,120,.94) 0%,rgba(26,99,176,.72) 58%,rgba(26,99,176,.42) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  color:#fff;
}
.banner-inner{
  min-height:260px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:44px 0;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.78);
  margin-bottom:12px;
  flex-wrap:wrap;
}
.breadcrumb-line a{color:rgba(255,255,255,.78);}
.breadcrumb-line a:hover{color:#fff;}
.breadcrumb-line .sep{opacity:.55;}
.breadcrumb-line .current{color:#fff;font-weight:500;}
.page-banner h1{
  color:#fff;
  font-size:44px;
  line-height:1.25;
  max-width:820px;
}
.page-banner .banner-sub{
  margin:14px 0 0;
  font-size:17px;
  color:rgba(255,255,255,.88);
  max-width:640px;
}
.banner-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
  font-size:13px;
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-plain{background:var(--c-bg);}
.section-white{background:#fff;}
.section-head{
  max-width:760px;
  margin-bottom:44px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:var(--c-primary-light);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:14px;
}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--c-text);margin:0;}
.divider-line{height:1px;background:var(--c-line);border:0;margin:0;}

/* ---------- 速览小卡 ---------- */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.quick-card{
  display:flex;
  align-items:flex-start;
  gap:14px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sd-card);
  padding:20px;
  transition:transform var(--tr),box-shadow var(--tr);
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--sd-card-hover);}
.quick-icon{
  width:40px;
  height:40px;
  flex:0 0 40px;
  border-radius:12px;
  background:var(--c-primary-light);
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
}
.quick-card h3{font-size:17px;margin-bottom:4px;}
.quick-card p{font-size:14px;line-height:1.7;color:var(--c-text);margin:0;}

/* ---------- 图文交替 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split-media{
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--c-primary-light);
  box-shadow:var(--sd-card);
  aspect-ratio:16/10;
}
.split-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.split-media:hover img{transform:scale(1.03);}
.split.reverse .split-media{order:2;}
.split-body h2{margin-bottom:14px;font-size:28px;}
.split-body p{font-size:16px;}
.check-list{margin-top:8px;display:flex;flex-direction:column;gap:10px;}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-text);
}
.check-list li i{
  position:absolute;
  left:0;
  top:5px;
  color:var(--c-accent);
  font-size:14px;
}

/* ---------- 更新记录 ---------- */
.update-list{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sd-card);
  overflow:hidden;
}
.update-item{
  display:grid;
  grid-template-columns:130px 1fr;
  gap:24px;
  padding:22px 26px;
  border-bottom:1px solid var(--c-line);
  transition:background var(--tr);
}
.update-item:last-child{border-bottom:0;}
.update-item:hover{background:#FAFCFE;}
.update-date{
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  letter-spacing:.4px;
}
.update-item h3{font-size:17px;margin-bottom:4px;}
.update-item p{font-size:14px;margin:0;color:var(--c-text);}

/* ---------- 对比表格 ---------- */
.table-wrap{
  overflow-x:auto;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sd-card);
  -webkit-overflow-scrolling:touch;
}
.cmp-table{
  width:100%;
  min-width:780px;
  border-collapse:collapse;
}
.cmp-table th{
  background:var(--c-primary-light);
  color:var(--c-primary-dark);
  font-size:15px;
  font-weight:600;
  text-align:left;
  height:56px;
  padding:0 20px;
  white-space:nowrap;
  border-bottom:1px solid var(--c-line);
}
.cmp-table td{
  height:52px;
  padding:0 20px;
  font-size:15px;
  color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table tbody tr:nth-child(even){background:#FAFCFE;}
.cmp-table td:first-child{
  color:var(--c-ink);
  font-weight:600;
  background:#fff;
  position:sticky;
  left:0;
  z-index:2;
}
.cmp-table tbody tr:nth-child(even) td:first-child{background:#FAFCFE;}
.cmp-table th:first-child{
  position:sticky;
  left:0;
  z-index:3;
  background:var(--c-primary-light);
}
.table-note{
  font-size:13px;
  color:var(--c-muted);
  margin:14px 0 0;
}

/* ---------- FAQ ---------- */
.faq-accordion{
  max-width:860px;
  margin:0 auto;
  --bs-accordion-border-color:var(--c-line);
  --bs-accordion-border-radius:var(--r-card);
  --bs-accordion-inner-border-radius:var(--r-card);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-focus-border-color:var(--c-line);
  --bs-accordion-active-bg:#fff;
  --bs-accordion-active-color:var(--c-primary);
  --bs-accordion-body-padding-x:22px;
  --bs-accordion-body-padding-y:18px;
}
.faq-accordion .accordion-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sd-card);
  margin-bottom:14px;
  overflow:hidden;
  background:#fff;
}
.faq-accordion .accordion-button{
  background:#fff;
  color:var(--c-ink);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:20px 22px;
  box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--c-primary);
  background:#fff;
  box-shadow:none;
}
.faq-accordion .accordion-button::after{
  content:"+";
  background-image:none;
  width:22px;
  height:22px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  font-weight:400;
  color:var(--c-muted);
  transition:transform var(--tr),color var(--tr);
  flex:0 0 22px;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--c-accent);
}
.faq-accordion .accordion-body{
  border-top:1px dashed var(--c-line);
  font-size:15px;
  line-height:1.8;
  color:var(--c-text);
  padding-top:18px;
}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--c-primary-dark);
  color:#fff;
  padding:72px 0;
  text-align:center;
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{
  color:rgba(255,255,255,.82);
  max-width:640px;
  margin:0 auto 30px;
  font-size:16px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-dark);
  color:#fff;
  padding:64px 0 32px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand strong{font-size:17px;font-weight:700;color:#fff;}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.78);
  margin:0;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{
  font-size:14px;
  color:rgba(255,255,255,.8);
  line-height:1.7;
}
.footer-col li a{
  color:rgba(255,255,255,.8);
  display:inline-block;
  transition:color var(--tr),transform var(--tr);
}
.footer-col li a:hover{
  color:#fff;
  transform:translateX(3px);
  text-decoration:none;
}
.footer-bottom{
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.7);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .split{gap:40px;}
  h1,.page-banner h1{font-size:38px;}
  h2{font-size:28px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .quick-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .split{gap:32px;}
  .split-body h2{font-size:25px;}
  .search-box{width:180px;flex:0 1 180px;}
  .brand-text{font-size:17px;}
}
@media (max-width:767px){
  body{font-size:17px;line-height:1.9;}
  .brand-inner{height:56px;gap:12px;}
  .brand-text{font-size:16px;}
  .search-box,.link-quiet,.brand-tools .btn-accent{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-inner{height:46px;padding:0 16px;gap:8px;}
  .page-banner h1{font-size:30px;}
  .banner-inner{min-height:180px;padding:32px 0;}
  .page-banner .banner-sub{font-size:15px;}
  .section{padding:48px 0;}
  .section-tight{padding:44px 0;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  .split{grid-template-columns:1fr;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:52px;}
  .split-media{aspect-ratio:16/9;}
  .update-item{grid-template-columns:1fr;gap:6px;padding:20px;}
  .cta-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .faq-accordion .accordion-button{font-size:16px;padding:18px;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  .btn{height:44px;padding:0 20px;font-size:15px;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1A63B0;
  --c-primary-dark:#0E4478;
  --c-primary-light:#EAF2FB;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E8661B;
  --c-accent-light:#FFF2E9;
  --c-support:#16A394;
  --c-ink:#14202E;
  --c-body:#46586D;
  --c-muted:#8395A8;
  --c-line:#E5EBF2;
  --c-bg:#F7F9FC;
  --c-card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:999px;
  --sh-card:0 6px 20px rgba(16,42,74,.06);
  --sh-hover:0 14px 32px rgba(16,42,74,.12);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:88px;
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  text-align:left;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{text-decoration:underline;}
button,input{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 页头 ---------- */
.site-header{position:relative;background:#fff;z-index:1030;}
.brand-bar{border-bottom:1px solid var(--c-line);}
.brand-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:0;}
.brand-tools{display:flex;align-items:center;gap:16px;}
.search-box{position:relative;width:220px;}
.search-box input{
  width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-bg);padding:0 12px 0 36px;font-size:14px;color:var(--c-ink);outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.search-box input::placeholder{color:var(--c-muted);}
.search-box input:focus{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(26,99,176,.2);}
.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--c-muted);font-size:13px;}
.link-quiet{font-size:14px;color:var(--c-body);}
.link-quiet:hover{color:var(--c-primary);text-decoration:underline;}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border:0;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;font-size:14px;font-weight:600;
  cursor:pointer;transition:background .25s,transform .25s,box-shadow .25s;
}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 18px rgba(255,122,47,.28);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-accent:focus-visible{outline:3px solid rgba(255,122,47,.3);outline-offset:2px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);font-size:16px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.channel-bar{position:sticky;top:0;z-index:1020;background:#fff;border-bottom:1px solid var(--c-line);box-shadow:0 2px 10px rgba(16,42,74,.04);}
.channel-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--r-badge);font-size:14px;color:var(--c-body);background:transparent;
  transition:background .2s,color .2s;
}
.channel-pill:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none;}
.channel-pill.active{background:var(--c-primary);color:#fff;}
.channel-pill.active:hover{background:var(--c-primary);color:#fff;}

.mobile-drawer{
  position:fixed;top:0;right:0;width:min(320px,84vw);height:100%;
  background:#fff;z-index:1050;padding:24px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s ease;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;color:var(--c-ink);cursor:pointer;}
.drawer-search{width:100%;margin-bottom:20px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-link{display:block;padding:12px 14px;border-radius:var(--r-btn);font-size:15px;color:var(--c-body);}
.drawer-link:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none;}
.drawer-link.active{background:var(--c-primary);color:#fff;}
.drawer-cta{width:100%;height:46px;font-size:15px;}
.drawer-mask{position:fixed;inset:0;background:rgba(20,32,46,.45);z-index:1040;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- 页头引导区 ---------- */
.page-head{padding:48px 0 40px;background:var(--c-bg);border-bottom:1px solid var(--c-line);}
.breadcrumb-row{font-size:14px;color:var(--c-muted);margin-bottom:16px;}
.breadcrumb-row a{color:var(--c-muted);}
.breadcrumb-row a:hover{color:var(--c-primary);}
.breadcrumb-row .sep{margin:0 8px;color:#C4D0DC;}
.breadcrumb-row .current{color:var(--c-ink);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-light);padding:5px 14px;border-radius:var(--r-badge);
}
h1.page-title{font-size:44px;line-height:1.25;font-weight:700;margin:18px 0 16px;max-width:920px;}
.page-lead{font-size:17px;line-height:1.85;color:var(--c-body);max-width:780px;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-body);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-badge);padding:6px 14px;
}
.tag i{color:var(--c-support);font-size:12px;}
.info-strip{
  margin-top:32px;border-top:1px solid var(--c-line);padding-top:22px;
  display:grid;grid-template-columns:repeat(3,1fr);
}
.info-strip .cell{padding:0 28px;border-right:1px solid var(--c-line);}
.info-strip .cell:first-child{padding-left:0;}
.info-strip .cell:last-child{border-right:0;padding-right:0;}
.info-strip strong{
  display:block;font-size:22px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.4;
}
.info-strip span{font-size:14px;color:var(--c-muted);}

/* ---------- 双栏正文 ---------- */
.doc-section{padding:var(--sp-7) 0;}
.doc-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start;}
.doc-toc{position:sticky;top:72px;}
.toc-label{font-size:13px;font-weight:600;color:var(--c-muted);margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--c-body);
  padding:9px 12px;border-radius:8px;border-left:3px solid transparent;
  transition:background .2s,color .2s,border-color .2s;
}
.toc-list a:hover{background:var(--c-primary-light);color:var(--c-primary);text-decoration:none;}
.toc-list a.active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-light);}

.doc-body{max-width:720px;}
.chapter{margin-bottom:56px;scroll-margin-top:72px;}
.chapter:last-child{margin-bottom:0;}
.chapter-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px;}
.chapter-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;
  background:var(--c-primary-light);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
}
h2.chapter-title{font-size:32px;line-height:1.3;font-weight:700;padding-top:1px;}
.chapter p{font-size:17px;line-height:1.9;color:var(--c-body);margin-bottom:1.05em;}
.chapter p strong{color:var(--c-ink);font-weight:600;}

.step-list{counter-reset:step;list-style:none;margin:24px 0 24px;padding:0;}
.step-list li{
  counter-increment:step;position:relative;padding-left:46px;margin-bottom:16px;
  font-size:16px;line-height:1.85;color:var(--c-ink);
}
.step-list li:last-child{margin-bottom:0;}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;width:30px;height:30px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.step-list li b{display:block;font-weight:600;color:var(--c-ink);}
.step-list li span{font-size:15px;color:var(--c-body);}

.note-box{
  display:flex;gap:12px;padding:16px 18px;margin:24px 0;
  background:var(--c-primary-light);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-img) var(--r-img) 0;
}
.note-box i{color:var(--c-primary);margin-top:4px;font-size:14px;}
.note-box p{margin:0;font-size:15px;line-height:1.8;color:var(--c-ink);}
.note-box.warn{background:var(--c-accent-light);border-left-color:var(--c-accent);}
.note-box.warn i{color:var(--c-accent);}

.figure{margin:28px 0 32px;}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-card);}
.figure figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}

.qa-list{display:flex;flex-direction:column;gap:16px;margin-top:24px;}
.qa-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-card);transition:box-shadow .28s,transform .28s;
}
.qa-item:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.qa-item h3{font-size:17px;font-weight:600;display:flex;gap:9px;margin-bottom:8px;line-height:1.6;}
.qa-item h3 i{color:var(--c-accent);font-size:14px;margin-top:5px;}
.qa-item p{margin:0;font-size:15px;line-height:1.8;color:var(--c-body);}

/* ---------- 底部相关入口 ---------- */
.entry-section{padding:0 0 var(--sp-7);}
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.entry-card{
  display:block;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D7E2EE;text-decoration:none;}
.entry-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.entry-card p{font-size:15px;line-height:1.75;color:var(--c-body);margin:0;}
.entry-arrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--c-accent);transition:gap .25s;
}
.entry-card:hover .entry-arrow{gap:14px;}

.text-cta{padding:0 0 var(--sp-7);text-align:center;}
.text-cta p{font-size:15px;color:var(--c-body);margin-bottom:18px;}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--r-btn);
  background:#fff;border:1px solid #D7E2EE;color:var(--c-primary);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .25s,border-color .25s,transform .25s,box-shadow .25s;
}
.btn-outline:hover{background:var(--c-primary-light);border-color:var(--c-primary);text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 18px rgba(16,42,74,.08);}
.btn-outline:focus-visible{outline:3px solid rgba(26,99,176,.25);outline-offset:2px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-dark);color:#fff;padding:64px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.76);margin:0;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.8);}
.footer-col a{font-size:14px;color:rgba(255,255,255,.8);transition:color .2s,padding-left .2s;}
.footer-col a:hover{color:#fff;padding-left:4px;text-decoration:none;}
.footer-bottom{margin-top:32px;font-size:13px;text-align:center;color:rgba(255,255,255,.7);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:32px;}
}
@media (max-width:991px){
  .doc-layout{grid-template-columns:1fr;gap:24px;}
  .doc-toc{position:static;top:auto;}
  .toc-list{flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;}
  .toc-list::-webkit-scrollbar{display:none;}
  .toc-list a{
    white-space:nowrap;border:1px solid var(--c-line);border-radius:var(--r-badge);
    border-left:1px solid var(--c-line);padding:8px 14px;font-size:13px;
  }
  .toc-list a.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .brand-bar .brand-inner{height:56px;}
  .search-box,.link-quiet{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-inner{padding-left:16px;padding-right:16px;}
  h1.page-title{font-size:30px;}
  h2.chapter-title{font-size:24px;}
  .page-head{padding:32px 0 28px;}
  .doc-section{padding:var(--sp-5) 0;}
  .chapter{margin-bottom:44px;}
  .info-strip{grid-template-columns:1fr;padding-top:8px;}
  .info-strip .cell{border-right:0;border-bottom:1px solid var(--c-line);padding:14px 0;}
  .info-strip .cell:last-child{border-bottom:0;}
  .entry-grid{grid-template-columns:1fr;}
  .entry-section,.text-cta{padding-bottom:var(--sp-5);}
  .footer-grid{grid-template-columns:1fr;gap:40px;}
  .site-footer{padding:48px 0 28px;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  body{font-size:17px;line-height:1.9;}
  h1.page-title{font-size:26px;}
  h2.chapter-title{font-size:22px;}
  .chapter p{font-size:16px;}
  .qa-item{padding:18px;}
  .entry-card{padding:22px;}
}