/* roulang page: index */
:root{
  --brand-900:#0B2C4D;
  --brand-700:#14538A;
  --brand-500:#2E7DBF;
  --brand-100:#E6F0FA;
  --brand-050:#F2F7FC;
  --accent-500:#E8A02C;
  --accent-600:#C9831A;
  --accent-050:#FFF6E8;
  --data-up:#1E9E6A;
  --ink-900:#16202B;
  --ink-700:#33414F;
  --ink-500:#5B6B7C;
  --ink-300:#93A2B0;
  --line:#E4ECF4;
  --surface:#FFFFFF;
  --bg:#F5F8FB;
  --danger:#D9534F;
  --sh-1:0 1px 2px rgba(11,44,77,.04),0 2px 8px rgba(11,44,77,.05);
  --sh-2:0 6px 18px rgba(11,44,77,.08);
  --sh-3:0 12px 32px rgba(11,44,77,.12);
  --r-card:16px;
  --r-sm:12px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",ui-monospace,SFMono-Regular,monospace;
}
*,*::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(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color 200ms var(--ease);}
a:hover{color:var(--accent-500);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:.01em;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-head h2{font-size:26px;position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--accent-500);}
.section-head p{margin-top:8px;color:var(--ink-500);font-size:14px;padding-left:16px;}
.section-head .head-copy{padding-left:0;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--brand-700);border-bottom:1px solid transparent;padding-bottom:2px;transition:all 200ms var(--ease);}
.link-arrow i{transition:transform 200ms var(--ease);}
.link-arrow:hover{color:var(--accent-500);}
.link-arrow:hover i{transform:translateX(4px);}

/* 悬浮胶囊导航 */
.site-header{position:sticky;top:16px;z-index:120;padding:0;margin-top:16px;}
.nav-shell{width:min(1200px,calc(100% - 32px));margin:0 auto;}
.nav-inner{
  display:flex;align-items:center;gap:20px;
  height:64px;padding:0 14px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(11,44,77,.08);
  box-shadow:var(--sh-2);
  transition:height 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px;background:rgba(255,255,255,.95);box-shadow:var(--sh-3);}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--brand-900);white-space:nowrap;}
.brand:hover{color:var(--brand-900);}
.brand-mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--brand-700),var(--brand-500));display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;box-shadow:var(--sh-1);flex:0 0 auto;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;font-size:14px;font-weight:500;color:var(--ink-700);border-radius:var(--r-pill);transition:all 200ms var(--ease);white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:50%;bottom:6px;width:0;height:2px;border-radius:2px;background:var(--accent-500);transform:translateX(-50%);transition:width 200ms var(--ease);}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{background:var(--brand-100);color:var(--brand-700);}
.nav-link.is-active::after{width:0;}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-pill);align-items:center;justify-content:center;color:var(--brand-900);font-size:17px;transition:background 200ms var(--ease);}
.nav-toggle:hover{background:var(--brand-050);}
.mobile-drawer{
  display:none;width:min(1200px,calc(100% - 32px));margin:10px auto 0;background:#fff;
  border-radius:20px;border:1px solid rgba(11,44,77,.08);box-shadow:var(--sh-3);padding:12px;
}
.mobile-drawer.is-open{display:block;animation:drawerIn 220ms var(--ease);}
@keyframes drawerIn{from{opacity:0;transform:translateY(-10px);}to{opacity:1;transform:translateY(0);}}
.mobile-drawer a{display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 16px;border-radius:14px;font-size:15px;font-weight:500;color:var(--ink-700);}
.mobile-drawer a:hover,.mobile-drawer a.is-active{background:var(--brand-050);color:var(--brand-700);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;letter-spacing:.01em;border:1.5px solid transparent;transition:all 200ms var(--ease);white-space:nowrap;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-outline{background:#fff;border-color:var(--brand-700);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;}
.btn.is-loading{pointer-events:none;opacity:.85;}
.btn.is-success{background:var(--data-up);color:#fff;}
.btn.is-error{background:#fff;border-color:var(--danger);color:var(--danger);}

/* Hero */
.hero{background:linear-gradient(180deg,var(--bg) 0%,var(--brand-050) 100%);padding:64px 0 96px;margin-top:-80px;padding-top:144px;}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:var(--r-pill);background:var(--accent-050);color:var(--accent-600);font-size:13px;font-weight:600;margin-bottom:20px;}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.22;font-weight:700;color:var(--ink-900);}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-500);line-height:1.75;max-width:520px;}
.hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.hero-trust{display:flex;gap:20px;margin-top:32px;flex-wrap:wrap;}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-500);}
.hero-trust i{color:var(--brand-500);font-size:14px;}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:16/10;}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.55) 0%,rgba(255,255,255,0) 55%);}
.hero-media-cap{position:absolute;left:24px;bottom:24px;z-index:2;background:rgba(255,255,255,.92);border-radius:var(--r-sm);padding:14px 18px;box-shadow:var(--sh-1);}
.hero-media-cap strong{display:block;font-size:15px;color:var(--brand-900);}
.hero-media-cap span{font-size:12.5px;color:var(--ink-500);}

/* 指标看板 */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:all 220ms var(--ease);overflow:hidden;}
.stat-card::before{content:"";position:absolute;left:24px;top:0;width:24px;height:3px;border-radius:0 0 3px 3px;background:var(--accent-500);}
.stat-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--brand-100);}
.stat-value{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:48px;font-weight:700;color:var(--brand-900);line-height:1.1;letter-spacing:-.02em;}
.stat-unit{font-size:14px;color:var(--ink-500);margin-left:6px;font-family:var(--font-cn);font-weight:400;}
.stat-sep{height:1px;background:var(--line);margin:16px 0 14px;}
.stat-label{font-size:14px;font-weight:500;color:var(--ink-700);}
.stat-note{margin-top:8px;font-size:12.5px;color:var(--ink-300);line-height:1.6;}

/* 服务矩阵 */
.matrix{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
.matrix-anchors{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:12px;box-shadow:var(--sh-1);position:sticky;top:104px;}
.anchor-item{display:flex;align-items:center;gap:12px;padding:14px 14px;border-radius:var(--r-sm);color:var(--ink-700);font-size:16px;font-weight:500;position:relative;transition:all 200ms var(--ease);}
.anchor-item i.ico{width:24px;text-align:center;color:var(--brand-700);font-size:16px;}
.anchor-item i.arrow{margin-left:auto;color:var(--ink-300);font-size:13px;transition:transform 200ms var(--ease);}
.anchor-item:hover{background:var(--brand-050);color:var(--brand-900);}
.anchor-item:hover i.arrow{transform:translateX(4px);}
.anchor-item.is-current{background:var(--brand-050);color:var(--brand-900);}
.anchor-item.is-current::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--accent-500);}
.matrix-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.m-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:all 220ms var(--ease);display:flex;flex-direction:column;gap:12px;overflow:hidden;}
.m-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ease);}
.m-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100);}
.m-card:hover::before{transform:scaleX(1);}
.m-card--wide{grid-column:span 2;}
.m-card--full{grid-column:span 2;flex-direction:row;align-items:center;gap:24px;}
.m-icon{width:44px;height:44px;border-radius:14px;background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto;}
.m-card h3{font-size:19px;}
.m-card p{font-size:14px;color:var(--ink-500);line-height:1.8;}
.m-cover{border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/9;}
.m-cover img{width:100%;height:100%;object-fit:cover;}
.m-card--full .m-cover{width:220px;flex:0 0 auto;aspect-ratio:16/10;}
.m-card--full .m-text{flex:1;display:flex;flex-direction:column;gap:10px;}

/* 最新信息 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:all 220ms var(--ease);display:flex;flex-direction:column;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100);}
.post-cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-050);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.post-card:hover .post-cover img{transform:scale(1.03);}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:500;letter-spacing:.01em;}
.badge-cat{background:var(--brand-100);color:var(--brand-700);}
.badge-up{background:rgba(30,158,106,.12);color:var(--data-up);}
.post-cover .badge{position:absolute;left:12px;top:12px;z-index:2;}
.post-body{padding:20px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{font-size:17px;font-weight:600;line-height:1.5;}
.post-title a{color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-title a:hover{color:var(--brand-700);}
.post-excerpt{font-size:14px;color:var(--ink-500);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-300);}
.post-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-300);}
.post-meta .post-arrow{margin-left:auto;color:var(--brand-700);font-size:14px;display:inline-flex;align-items:center;gap:4px;transition:all 200ms var(--ease);}
.post-meta .post-arrow:hover{color:var(--accent-500);gap:8px;}
.empty-state{background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;box-shadow:var(--sh-1);}
.empty-state i{font-size:48px;color:var(--ink-300);}
.empty-state p{margin:16px 0 20px;color:var(--ink-500);font-size:15px;}

/* 结果对比 */
.legend{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:24px;}
.legend span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);}
.legend i{width:20px;height:8px;border-radius:var(--r-pill);display:inline-block;}
.legend .lg-a{background:var(--line);}
.legend .lg-b{background:var(--brand-500);}
.legend .lg-c{background:var(--data-up);}
.compare-wrap{display:grid;grid-template-columns:1fr 1px 1fr;gap:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);}
.compare-divider{background:var(--line);}
.compare-col h3{font-size:16px;margin-bottom:6px;}
.compare-col .col-note{font-size:13px;color:var(--ink-500);margin-bottom:22px;}
.ci-row{margin-bottom:20px;}
.ci-top{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;color:var(--ink-700);margin-bottom:8px;}
.ci-top b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:15px;font-weight:700;color:var(--brand-900);}
.ci-track{height:8px;border-radius:var(--r-pill);background:var(--brand-050);overflow:hidden;}
.ci-fill{height:100%;border-radius:var(--r-pill);}
.ci-fill--base{background:var(--brand-500);}
.ci-fill--up{background:var(--data-up);}

/* 证据条带 */
.proof{background:var(--brand-050);}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.proof-item{display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:all 220ms var(--ease);}
.proof-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100);}
.proof-item i.ico{width:24px;color:var(--brand-700);font-size:19px;line-height:1.6;}
.proof-item h3{font-size:16px;margin-bottom:6px;}
.proof-item p{font-size:14px;color:var(--ink-500);line-height:1.8;}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
.faq-side h2{font-size:26px;position:relative;padding-left:16px;}
.faq-side h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--accent-500);}
.faq-side .lead{margin-top:14px;font-size:14.5px;color:var(--ink-500);line-height:1.85;}
.faq-contact{margin-top:24px;background:var(--brand-050);border-radius:var(--r-card);padding:24px;}
.faq-contact h3{font-size:16px;margin-bottom:8px;}
.faq-contact p{font-size:13.5px;color:var(--ink-500);line-height:1.8;margin-bottom:16px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-1);overflow:hidden;transition:all 200ms var(--ease);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:18px 20px;font-size:16px;font-weight:500;color:var(--ink-900);position:relative;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{margin-left:auto;color:var(--brand-500);font-size:15px;transition:transform 220ms var(--ease);flex:0 0 auto;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open]{border-color:var(--brand-100);}
.faq-item[open] summary::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;background:var(--accent-500);}
.faq-answer{padding:0 20px 20px 20px;font-size:14.5px;color:var(--ink-500);line-height:1.9;}

/* 表单 */
.contact-card{background:var(--surface);border-radius:20px;box-shadow:var(--sh-2);border:1px solid var(--line);overflow:hidden;display:grid;grid-template-columns:6fr 4fr;}
.form-side{padding:40px;}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:span 2;}
.field label{font-size:13px;font-weight:500;color:var(--ink-700);}
.field input,.field select,.field textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  min-height:48px;padding:12px 16px;font-size:14.5px;color:var(--ink-900);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field textarea{min-height:112px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(46,125,191,.18);}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--danger);}
.field .err{font-size:12px;color:var(--danger);display:none;}
.field.has-error .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;grid-column:span 2;font-size:13px;color:var(--ink-500);line-height:1.7;}
.check-row input{width:18px;height:18px;min-height:0;margin-top:3px;flex:0 0 auto;accent-color:var(--brand-700);}
.form-actions{grid-column:span 2;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-tip{font-size:13px;color:var(--ink-300);}
.info-side{background:var(--brand-050);padding:40px;display:flex;flex-direction:column;gap:20px;}
.info-side h3{font-size:19px;}
.info-side p{font-size:14px;color:var(--ink-500);line-height:1.85;}
.info-list{display:flex;flex-direction:column;gap:14px;margin-top:4px;}
.info-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700);line-height:1.7;}
.info-list i{color:var(--data-up);margin-top:5px;font-size:13px;}
.info-hours{margin-top:auto;background:#fff;border-radius:var(--r-sm);padding:16px 18px;border:1px solid var(--line);}
.info-hours strong{display:block;font-size:13px;color:var(--brand-900);}
.info-hours span{font-size:13px;color:var(--ink-500);}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;position:relative;padding-bottom:12px;margin-bottom:16px;}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--accent-500);}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:600;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-col p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-links li{line-height:32px;}
.footer-links a{color:rgba(255,255,255,.78);font-size:13.5px;transition:color 200ms var(--ease);}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.6);}

/* 响应式 */
@media (max-width:1279px){
  .nav-links{gap:0;}
  .nav-link{padding:0 10px;font-size:13.5px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .hero{padding-top:130px;padding-bottom:72px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:2;aspect-ratio:16/9;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .matrix{grid-template-columns:1fr;}
  .matrix-anchors{position:static;display:flex;gap:8px;overflow-x:auto;padding:10px;scrollbar-width:thin;}
  .anchor-item{flex:0 0 auto;white-space:nowrap;padding:12px 16px;}
  .anchor-item.is-current::before{display:none;}
  .anchor-item i.arrow{display:none;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;}
  .faq-side{position:static;}
  .contact-card{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding-top:118px;padding-bottom:56px;}
  .hero h1{font-size:28px;}
  .hero-media{aspect-ratio:16/9;max-height:220px;}
  .hero-media-cap{left:14px;bottom:14px;padding:10px 14px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-value{font-size:40px;}
  .matrix-cards{grid-template-columns:1fr;}
  .m-card--wide,.m-card--full{grid-column:span 1;}
  .m-card--full{flex-direction:column;align-items:flex-start;}
  .m-card--full .m-cover{width:100%;}
  .post-grid{grid-template-columns:1fr;}
  .post-card{flex-direction:row;}
  .post-cover{flex:0 0 40%;aspect-ratio:1/1;height:100%;}
  .post-body{padding:16px;}
  .post-title{font-size:15.5px;-webkit-line-clamp:2;}
  .post-excerpt{display:none;}
  .compare-wrap{grid-template-columns:1fr;gap:24px;padding:24px;}
  .compare-divider{height:1px;width:100%;}
  .form-side,.info-side{padding:24px;}
  .form-grid{grid-template-columns:1fr;}
  .field--full,.check-row,.form-actions{grid-column:span 1;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand-900:#0B2C4D;
  --brand-700:#14538A;
  --brand-500:#2E7DBF;
  --brand-100:#E6F0FA;
  --brand-050:#F2F7FC;
  --accent-500:#E8A02C;
  --accent-600:#C9831A;
  --accent-050:#FFF6E8;
  --data-up:#1E9E6A;
  --ink-900:#16202B;
  --ink-700:#33414F;
  --ink-500:#5B6B7C;
  --ink-300:#93A2B0;
  --line:#E4ECF4;
  --surface:#FFFFFF;
  --bg:#F5F8FB;
  --sh-1:0 1px 2px rgba(11,44,77,.04),0 2px 8px rgba(11,44,77,.05);
  --sh-2:0 6px 18px rgba(11,44,77,.08);
  --sh-3:0 12px 32px rgba(11,44,77,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --num:"DIN Alternate","Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:16px;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-700);text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.01em;color:var(--ink-900)}
p{margin:0}
time,.num{font-family:var(--num);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:8px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:0 0 12px 0;z-index:999}
.skip-link:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:16px;z-index:120;padding:0 16px}
.nav-shell{
  width:min(1200px,100%);margin:0 auto;height:64px;
  display:flex;align-items:center;gap:20px;
  padding:0 12px 0 18px;border-radius:999px;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(11,44,77,.08);
  box-shadow:var(--sh-2);
  transition:background .22s var(--ease),height .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.95);height:60px;box-shadow:var(--sh-3)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;font-size:15px;flex-shrink:0
}
.brand-text{font-size:16px;font-weight:600;color:var(--brand-900);white-space:nowrap;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:999px;font-size:14px;font-weight:500;color:var(--ink-700);
  transition:color .18s var(--ease),background .18s var(--ease)
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease)
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{background:var(--brand-100);color:var(--brand-700)}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--brand-700);cursor:pointer;
  align-items:center;justify-content:center;transition:background .18s var(--ease)
}
.nav-toggle:hover{background:var(--brand-050)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-weight:600;border-radius:999px;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)
}
.btn-primary{background:var(--accent-500);color:#fff;height:48px;padding:0 28px;font-size:15px}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-secondary{background:#fff;color:var(--brand-700);border:1.5px solid var(--brand-700);height:48px;padding:0 26px;font-size:15px}
.btn-secondary:hover{background:var(--brand-050)}
.btn-secondary:active{transform:translateY(0);filter:brightness(.97)}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700)}
.btn-link i{transition:transform .2s var(--ease)}
.btn-link:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px}
.btn-link:hover i{transform:translateX(4px)}
.btn-nav{height:40px;padding:0 20px;font-size:14px}

/* ---------- 面包屑 ---------- */
.page-head{padding:36px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-500)}
.breadcrumb a{color:var(--ink-500);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-700);font-weight:500}

/* ---------- 文章头部 ---------- */
.article-head{max-width:1080px;margin:0 auto;padding:22px 0 0}
.article-title{
  font-size:clamp(24px,3vw,34px);line-height:1.35;font-weight:600;
  color:var(--ink-900);letter-spacing:.01em;max-width:900px
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;padding-bottom:22px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--ink-500)
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-300);display:inline-block}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:500}
.badge-cat{background:var(--brand-100);color:var(--brand-700)}

/* ---------- 文章布局 ---------- */
.article-layout{
  max-width:1080px;margin:0 auto;padding:38px 0 0;
  display:grid;grid-template-columns:minmax(0,780px) 240px;gap:48px;justify-content:center;
}
.article-main{min-width:0}
.article-body{font-size:16.5px;line-height:1.9;color:var(--ink-700);word-break:break-word}
.article-body p{margin:0 0 1.15em}
.article-body h2{font-size:22px;line-height:1.4;margin:2em 0 .8em;padding-left:12px;border-left:4px solid var(--accent-500)}
.article-body h3{font-size:18px;line-height:1.5;margin:1.5em 0 .6em}
.article-body h4{font-size:16.5px;margin:1.3em 0 .5em}
.article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 1.15em;list-style:revert}
.article-body li{margin-bottom:8px}
.article-body li::marker{color:var(--brand-500)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--brand-050);
  border-left:3px solid var(--brand-500);border-radius:0 12px 12px 0;color:var(--ink-700)
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.2em 0}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent-500)}
.article-body table{width:100%;border-collapse:collapse;margin:1.3em 0;font-size:15px}
.article-body th{background:var(--brand-100);color:var(--brand-900);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:11px 14px;border:1px solid var(--line);line-height:1.5}
.article-body code{background:var(--brand-050);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--brand-700)}
.article-body strong{color:var(--ink-900);font-weight:600}

/* ---------- 空态 ---------- */
.article-empty{
  padding:56px 24px;text-align:center;background:var(--surface);
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-1)
}
.article-empty i{font-size:44px;color:var(--ink-300)}
.article-empty h2{margin:16px 0 8px;font-size:20px}
.article-empty p{font-size:14px;color:var(--ink-500);margin-bottom:22px}

/* ---------- 标签 + 相关推荐 ---------- */
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:13px;transition:background .18s var(--ease)}
.tag:hover{background:var(--accent-050);color:var(--accent-600)}
.related{margin-top:48px}
.related-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.related-head h2{font-size:20px;display:flex;align-items:center;gap:10px}
.related-head h2 i{color:var(--accent-500);font-size:16px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.related-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.related-card .rc-body{padding:16px 18px 18px}
.related-card .rc-cat{font-size:12px;color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:3px 10px;display:inline-block}
.related-card h3{font-size:15.5px;line-height:1.5;margin:10px 0 8px;color:var(--ink-900)}
.related-card span.more{font-size:13px;color:var(--brand-700);font-weight:600}
.related-foot{margin-top:28px}

/* ---------- 侧栏 ---------- */
.article-aside{min-width:0}
.aside-inner{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-1);padding:20px}
.aside-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px}
.aside-title i{color:var(--accent-500);font-size:15px}
.aside-list{display:flex;flex-direction:column;gap:2px}
.aside-list a{display:block;padding:9px 10px;border-radius:10px;font-size:13.5px;color:var(--ink-700);transition:background .18s var(--ease),color .18s var(--ease)}
.aside-list a:hover{background:var(--brand-050);color:var(--brand-700)}
.aside-cta{background:var(--brand-050);border:1px solid var(--line);border-radius:16px;padding:20px}
.aside-cta p{font-size:13.5px;line-height:1.7;color:var(--ink-500)}
.aside-cta .btn{width:100%;margin-top:16px;height:44px;font-size:14px}

/* ---------- 底部联系条 ---------- */
.cta-band{padding:72px 0 0}
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--brand-900);border-radius:20px;padding:36px 40px;box-shadow:var(--sh-2)
}
.cta-card h2{color:#fff;font-size:22px;line-height:1.4}
.cta-card p{color:rgba(255,255,255,.78);font-size:14.5px;margin-top:10px}
.cta-card .btn-primary{flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);margin-top:88px;padding:64px 0 0;color:rgba(255,255,255,.78)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-500),var(--accent-500))}
.footer-col p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.7);max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--accent-500)}
.footer-links li{line-height:32px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.78);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.6)
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,780px)}
  .aside-inner{position:static}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;left:16px;right:16px;top:88px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--sh-3);padding:12px;
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease)
  }
  .nav-links.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-link{height:48px;border-radius:12px;justify-content:flex-start;padding:0 14px}
  .nav-link::after{display:none}
  .nav-link:hover{background:var(--brand-050)}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-grid .related-card:last-child{grid-column:span 2}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .footer-col:first-child{grid-column:span 2}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px 28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .brand-text{font-size:14.5px}
  .btn-primary,.btn-secondary{height:46px;padding:0 22px;font-size:14.5px}
  .article-head{padding-top:16px}
  .article-layout{padding-top:28px;gap:32px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:20px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .related-grid .related-card:last-child{grid-column:auto}
  .cta-band{padding-top:56px}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:520px){
  .brand-text{font-size:13px}
  .btn-nav{display:none}
  .meta-row{font-size:12.5px;gap:8px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-col:first-child{grid-column:auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2C4D;
  --brand-700:#14538A;
  --brand-500:#2E7DBF;
  --brand-100:#E6F0FA;
  --brand-050:#F2F7FC;
  --accent-500:#E8A02C;
  --accent-600:#C9831A;
  --accent-050:#FFF6E8;
  --data-up:#1E9E6A;
  --ink-900:#16202B;
  --ink-700:#33414F;
  --ink-500:#5B6B7C;
  --ink-300:#93A2B0;
  --line:#E4ECF4;
  --surface:#FFFFFF;
  --bg:#F5F8FB;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(11,44,77,.04),0 2px 8px rgba(11,44,77,.05);
  --sh-2:0 6px 18px rgba(11,44,77,.08);
  --sh-3:0 12px 32px rgba(11,44,77,.12);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}
*,*::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(--ink-700);
  background:var(--bg);
  letter-spacing:normal;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius);}
a{color:var(--brand-700);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--accent-500);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:16px;
  z-index:80;
  padding:0 16px;
}
.nav-shell{
  width:min(1200px,calc(100% - 32px));
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
  padding:0 16px 0 20px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(11,44,77,.08);
  box-shadow:var(--sh-2);
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled .nav-shell{
  height:60px;
  background:rgba(255,255,255,.95);
  box-shadow:var(--sh-3);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--brand-900);
  font-size:16px;
  font-weight:600;
}
.brand:hover{color:var(--brand-900);}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;
  font-size:15px;
  box-shadow:var(--sh-1);
}
.brand-name{white-space:nowrap;}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:14px;
  font-weight:500;
  color:var(--ink-700);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:6px;
  height:2px;
  border-radius:2px;
  background:var(--accent-500);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{
  background:var(--brand-100);
  color:var(--brand-700);
  font-weight:600;
}
.nav-link.is-active::after{transform:scaleX(0);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--radius-pill);
  color:var(--brand-900);
  font-size:17px;
  align-items:center;
  justify-content:center;
  transition:background var(--dur) var(--ease);
}
.nav-toggle:hover{background:var(--brand-050);}
.nav-drawer{
  display:none;
  width:min(1200px,calc(100% - 32px));
  margin:10px auto 0;
  padding:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--sh-3);
}
.nav-drawer.is-open{display:block;animation:drawerIn 220ms var(--ease);}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.nav-drawer a{
  display:flex;
  align-items:center;
  height:48px;
  padding:0 14px;
  border-radius:14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-700);
}
.nav-drawer a.is-active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.nav-drawer a:hover{background:var(--brand-050);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  border:1.5px solid transparent;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:#B9741A;}
.btn-ghost{background:#fff;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  text-decoration:underline;
  text-underline-offset:3px;
}
.btn-link i{transition:transform var(--dur) var(--ease);}
.btn-link:hover{color:var(--accent-500);}
.btn-link:hover i{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 通用 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{
  position:relative;
  font-size:26px;
  line-height:1.35;
  padding-left:16px;
  margin-bottom:12px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:4px;height:22px;
  border-radius:2px;
  background:var(--accent-500);
}
.section-head p{font-size:16px;color:var(--ink-500);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:500;
  background:var(--brand-100);
  color:var(--brand-700);
}
.badge-up{background:rgba(30,158,106,.12);color:var(--data-up);}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  margin-top:-80px;
  padding:172px 0 72px;
  background:linear-gradient(100deg,var(--brand-050) 0%,var(--bg) 68%);
  border-bottom:1px solid var(--line);
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.page-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.94) 0%,rgba(255,255,255,.72) 52%,rgba(255,255,255,.42) 100%);
}
.page-banner .container{position:relative;z-index:2;min-height:180px;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--ink-500);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-700);}
.page-banner h1{
  font-size:clamp(28px,3.4vw,40px);
  line-height:1.28;
  max-width:820px;
  margin-bottom:16px;
}
.banner-lead{
  max-width:560px;
  font-size:16px;
  color:var(--ink-700);
}
.banner-icon{
  position:absolute;
  right:40px;
  bottom:36px;
  z-index:2;
  font-size:48px;
  color:var(--brand-500);
  opacity:.28;
}

/* ---------- 核对条 ---------- */
.check-strip{
  padding:32px 0 0;
}
.check-strip-inner{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  padding:20px 24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--sh-1);
}
.check-item{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 240px;
  font-size:14px;
  color:var(--ink-700);
}
.check-item i{color:var(--data-up);font-size:15px;}

/* ---------- Z 字图文 ---------- */
.zigzag{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;}
.zigzag + .zigzag{margin-top:80px;}
.zigzag-media{grid-column:span 5;}
.zigzag-body{grid-column:span 7;}
.zigzag.is-reverse .zigzag-media{order:2;}
.zigzag.is-reverse .zigzag-body{order:1;}
.zigzag-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius);
  box-shadow:var(--sh-2);
}
.zigzag-body h3{
  font-size:19px;
  line-height:1.5;
  margin-bottom:14px;
}
.zigzag-body p{font-size:16px;color:var(--ink-700);margin-bottom:14px;}
.zigzag-body p:last-of-type{margin-bottom:20px;}
.mini-list{margin:0 0 20px;display:grid;gap:8px;}
.mini-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--ink-500);
}
.mini-list i{color:var(--brand-500);font-size:13px;margin-top:6px;}

/* ---------- 步骤时间线 ---------- */
.timeline-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:48px 40px;
  box-shadow:var(--sh-1);
}
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";
  position:absolute;
  left:15px;top:12px;bottom:12px;
  width:2px;
  background:var(--line);
}
.step{
  position:relative;
  display:grid;
  grid-template-columns:32px 1fr;
  gap:20px;
  padding:16px 0;
}
.step-index{
  width:32px;height:32px;
  border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand-700);
  color:#fff;
  font-family:var(--font-num);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  position:relative;
  z-index:1;
}
.step.is-current .step-index{background:var(--accent-500);}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{font-size:14px;color:var(--ink-500);margin:0;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.faq-aside{grid-column:span 4;}
.faq-main{grid-column:span 8;}
.faq-aside h2{
  position:relative;
  font-size:26px;
  line-height:1.35;
  padding-left:16px;
  margin-bottom:14px;
}
.faq-aside h2::before{
  content:"";
  position:absolute;left:0;top:6px;
  width:4px;height:22px;border-radius:2px;
  background:var(--accent-500);
}
.faq-aside p{font-size:15px;color:var(--ink-500);margin-bottom:24px;}
.aside-card{
  background:var(--brand-050);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
}
.aside-card h4{font-size:15px;margin-bottom:8px;}
.aside-card p{font-size:14px;color:var(--ink-500);margin-bottom:16px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-2);border-color:var(--brand-100);}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:18px 20px 18px 22px;
  font-size:16px;
  font-weight:500;
  color:var(--ink-900);
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:2px;
  background:var(--accent-500);
  opacity:0;
  transition:opacity var(--dur) var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q i{
  flex:0 0 auto;
  font-size:14px;
  color:var(--brand-700);
  transition:transform 220ms var(--ease);
}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms var(--ease);
}
.faq-a p{
  padding:0 20px 20px 22px;
  font-size:15px;
  color:var(--ink-500);
  line-height:1.85;
}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--brand-900);
  border-radius:20px;
  padding:36px 40px;
  display:flex;
  align-items:center;
  gap:24px;
  flex-wrap:wrap;
}
.cta-bar h2{
  color:#fff;
  font-size:22px;
  line-height:1.45;
  margin-bottom:6px;
}
.cta-bar p{color:rgba(255,255,255,.78);font-size:14px;margin:0;}
.cta-bar .cta-text{flex:1 1 420px;}
.cta-bar .btn{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--brand-900);
  color:rgba(255,255,255,.78);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px 32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);}
.footer-col h4{
  position:relative;
  color:#fff;
  font-size:14px;
  font-weight:600;
  padding-bottom:12px;
  margin-bottom:14px;
}
.footer-col h4::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:24px;height:2px;
  background:var(--accent-500);
}
.footer-links li{line-height:32px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 20px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{height:56px;padding:0 12px 0 16px;gap:12px;}
  .site-header.is-scrolled .nav-shell{height:56px;}
  .brand-name{font-size:15px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-banner{padding:150px 0 56px;}
  .zigzag-media{grid-column:span 12;}
  .zigzag-body{grid-column:span 12;}
  .zigzag.is-reverse .zigzag-media{order:0;}
  .zigzag.is-reverse .zigzag-body{order:0;}
  .zigzag + .zigzag{margin-top:56px;}
  .faq-aside{grid-column:span 12;}
  .faq-main{grid-column:span 12;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col:first-child{grid-column:span 2;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:20px;}
  .section-head h2::before{height:18px;top:5px;}
  .page-banner{padding:132px 0 48px;}
  .page-banner h1{font-size:clamp(24px,6.4vw,30px);}
  .banner-icon{display:none;}
  .check-strip-inner{padding:18px;}
  .check-item{flex:1 1 100%;}
  .timeline-wrap{padding:28px 20px;}
  .cta-bar{padding:28px 22px;}
  .cta-bar .btn{width:100%;}
  .cta-bar .cta-text{flex:1 1 100%;}
  .faq-aside h2{font-size:20px;}
  .faq-aside h2::before{height:18px;top:5px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-col:first-child{grid-column:span 1;}
  .site-footer{padding:56px 0 24px;margin-top:56px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .brand-name{max-width:132px;overflow:hidden;text-overflow:ellipsis;}
  .btn{padding:0 22px;}
  .faq-q{font-size:15px;padding:16px 16px 16px 18px;}
  .faq-a p{padding:0 16px 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2C4D;
  --brand-700:#14538A;
  --brand-500:#2E7DBF;
  --brand-100:#E6F0FA;
  --brand-050:#F2F7FC;
  --accent-500:#E8A02C;
  --accent-600:#C9831A;
  --accent-050:#FFF6E8;
  --data-up:#1E9E6A;
  --ink-900:#16202B;
  --ink-700:#33414F;
  --ink-500:#5B6B7C;
  --ink-300:#93A2B0;
  --line:#E4ECF4;
  --surface:#FFFFFF;
  --bg:#F5F8FB;
  --sh-1:0 1px 2px rgba(11,44,77,.04),0 2px 8px rgba(11,44,77,.05);
  --sh-2:0 6px 18px rgba(11,44,77,.08);
  --sh-3:0 12px 32px rgba(11,44,77,.12);
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --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(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-500)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
.num{font-family:"DIN Alternate","Barlow Semi Condensed",ui-monospace,monospace;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:12px 20px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 悬浮胶囊导航 ---------- */
.nav-wrap{position:sticky;top:0;z-index:90;padding:16px 16px 0}
.nav-inner{
  width:min(1200px,100%);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 14px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(11,44,77,.08);
  box-shadow:var(--sh-2);
  transition:height .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-wrap.is-scrolled .nav-inner{height:60px;background:rgba(255,255,255,.95);box-shadow:var(--sh-3)}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--brand-900);flex:0 0 auto}
.brand:hover{color:var(--brand-900)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--brand-900);color:#fff;
  display:grid;place-items:center;font-size:14px;flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  font-size:14px;font-weight:500;color:var(--ink-700);
  padding:9px 13px;border-radius:var(--r-pill);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.nav-link.is-active{background:var(--brand-100);color:var(--brand-700)}
.nav-link.is-active:hover::after{display:none}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;
  border-radius:var(--r-pill);cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:var(--r-pill);font-size:14px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--accent-500);color:#fff;height:48px;padding:0 28px}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;filter:brightness(.96)}
.btn-secondary{background:#fff;color:var(--brand-700);border:1.5px solid var(--brand-700);height:48px;padding:0 26px}
.btn-secondary:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-sm{height:40px;padding:0 20px}
.btn-lg{height:50px;padding:0 32px;width:100%}
.btn.is-success{background:var(--data-up)}
.btn.is-success:hover{background:var(--data-up);transform:none}
.btn[disabled],.btn.is-loading{cursor:not-allowed;opacity:.85}
.btn.is-loading{opacity:1;background:var(--accent-600)}
.btn-dots{display:none;gap:4px;align-items:center}
.btn-dots i{width:5px;height:5px;border-radius:50%;background:currentColor;animation:dot .9s infinite ease-in-out}
.btn-dots i:nth-child(2){animation-delay:.15s}
.btn-dots i:nth-child(3){animation-delay:.3s}
.btn.is-loading .btn-dots{display:inline-flex}
.btn.is-loading .btn-label{display:none}
.btn-check{display:none}
.btn.is-success .btn-check{display:inline-flex}
@keyframes dot{0%,80%,100%{opacity:.35;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}

/* ---------- 分类页 Banner ---------- */
.page-banner{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--brand-050) 0%,var(--bg) 100%);padding:56px 0 52px}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(245,248,251,.97) 0%,rgba(245,248,251,.78) 52%,rgba(245,248,251,.34) 100%);
}
.banner-inner{position:relative;z-index:2;max-width:840px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-500);margin-bottom:16px}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .current{color:var(--ink-700);font-weight:500}
.page-banner h1{
  font-size:clamp(28px,3.4vw,40px);
  line-height:1.28;
  font-weight:600;
  margin-bottom:14px;
}
.banner-lead{font-size:16px;color:var(--ink-700);max-width:560px}
.banner-deco{
  position:absolute;right:24px;bottom:28px;z-index:2;
  width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;
  color:var(--brand-700);font-size:20px;
  background:rgba(255,255,255,.72);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-plain{background:transparent}
.section-white{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{
  position:relative;
  font-size:26px;line-height:1.35;font-weight:600;
  padding-left:16px;margin-bottom:12px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:24px;
  border-radius:2px;background:var(--accent-500);
}
.section-head p{font-size:15px;color:var(--ink-500)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.section-head-row .section-head{margin-bottom:0}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.metric-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.metric-card::before{
  content:"";position:absolute;top:0;left:20px;width:24px;height:3px;
  background:var(--accent-500);border-radius:0 0 2px 2px;
}
.metric-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--brand-100)}
.metric-value{display:flex;align-items:baseline;gap:4px;margin-top:10px;font-size:40px;font-weight:700;line-height:1.1;color:var(--brand-900}
.metric-value .unit{font-size:14px;font-weight:500;color:var(--ink-500);letter-spacing:0}
.metric-label{padding-top:12px;margin-top:14px;border-top:1px solid var(--line);font-size:14px;font-weight:500;color:var(--ink-700)}
.metric-note{margin-top:4px;font-size:12px;color:var(--ink-500)}

/* ---------- 对比卡 ---------- */
.legend{display:flex;flex-wrap:wrap;gap:24px;margin-bottom:20px}
.legend li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500)}
.legend .dot{width:10px;height:10px;border-radius:50%;flex:0 0 auto}
.legend .dot-before{background:var(--brand-500)}
.legend .dot-after{background:var(--data-up)}
.legend .dot-num{width:10px;height:10px;border-radius:3px;background:var(--brand-100)}
.compare-grid{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;
}
.compare-card{padding:28px}
.compare-card + .compare-card{border-left:1px solid var(--line)}
.compare-card h3{font-size:19px;font-weight:600;margin-bottom:6px}
.compare-card .compare-sub{font-size:13px;color:var(--ink-500);margin-bottom:22px}
.bar-row{margin-bottom:20px}
.bar-row:last-child{margin-bottom:0}
.bar-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:8px}
.bar-top .name{font-size:14px;font-weight:500;color:var(--ink-700)}
.bar-top .val{font-size:15px;font-weight:700;color:var(--brand-900)}
.compare-card.after .bar-top .val{color:var(--data-up)}
.bar-track{height:8px;border-radius:var(--r-pill);background:var(--brand-100);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--r-pill)}
.bar-fill.before{background:var(--brand-500)}
.bar-fill.after{background:var(--data-up)}

/* ---------- 条形图卡 ---------- */
.barcard{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);
}
.barcard h3{font-size:19px;font-weight:600;margin-bottom:6px}
.barcard .card-sub{font-size:13px;color:var(--ink-500);margin-bottom:28px}
.cover-row{display:grid;grid-template-columns:132px 1fr 72px;align-items:center;gap:16px;margin-bottom:20px}
.cover-row:last-child{margin-bottom:0}
.cover-row .row-label{font-size:14px;font-weight:500;color:var(--ink-700)}
.cover-track{height:8px;border-radius:var(--r-pill);background:var(--brand-050);border:1px solid var(--line);overflow:hidden}
.cover-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand-500),var(--brand-700))}
.cover-row .row-val{font-size:15px;font-weight:700;color:var(--brand-900);text-align:right}

/* ---------- 2×2 说明卡 ---------- */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.info-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.info-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--brand-100)}
.info-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.info-body{padding:20px 24px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.info-body h3{font-size:19px;font-weight:600}
.info-body p{font-size:14px;color:var(--ink-500);line-height:1.8}
.info-body .badge{align-self:flex-start;margin-top:2px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:500;
  background:var(--brand-100);color:var(--brand-700);letter-spacing:0;
}
.badge-up{background:rgba(30,158,106,.12);color:var(--data-up)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--accent-500),var(--sh-2);border-color:var(--brand-100)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:500;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;line-height:1;color:var(--brand-700);
  transition:transform .22s var(--ease),color .22s var(--ease);flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent-500)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-answer{padding:0 20px 20px;font-size:15px;color:var(--ink-500);line-height:1.9}

/* ---------- CTA 表单 ---------- */
.cta-card{
  display:grid;grid-template-columns:1.35fr 1fr;
  background:var(--surface);border:1px solid var(--line);
  border-radius:20px;box-shadow:var(--sh-2);overflow:hidden;
}
.form-side{padding:40px}
.form-side h2{font-size:26px;line-height:1.35;font-weight:600;margin-bottom:10px}
.form-side .form-lead{font-size:14px;color:var(--ink-500);margin-bottom:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:500;color:var(--ink-700)}
.field input,.field select,.field textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  height:48px;padding:0 16px;font-size:15px;color:var(--ink-900);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 16px;line-height:1.8;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(46,125,191,.18);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 22px) 21px,calc(100% - 16px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:44px}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-500);line-height:1.7}
.checkbox input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-700);flex:0 0 auto}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-actions .hint{font-size:12px;color:var(--ink-300)}
.aside-side{
  background:var(--brand-050);padding:40px;
  border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:20px;
}
.aside-side h3{font-size:19px;font-weight:600}
.trust-list{display:flex;flex-direction:column;gap:14px}
.trust-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700)}
.trust-list i{color:var(--data-up);font-size:14px;line-height:1.9}
.aside-note{
  margin-top:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:16px 18px;font-size:13px;color:var(--ink-500);
}
.aside-note strong{display:block;font-size:14px;color:var(--ink-900);margin-bottom:4px;font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);border-radius:11px}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:320px}
.footer-col h4{position:relative;font-size:14px;font-weight:600;color:#fff;padding-bottom:10px;margin-bottom:18px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--accent-500);border-radius:2px}
.footer-links li{line-height:32px}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 动效与响应式 ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
@media (max-width:1279px){
  .container{max-width:960px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info-grid{grid-template-columns:1fr}
  .nav-links{
    position:fixed;top:88px;left:16px;right:16px;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:12px;
    background:#fff;border:1px solid var(--line);
    border-radius:20px;box-shadow:var(--sh-3);
    max-height:calc(100vh - 120px);overflow:auto;
  }
  .nav-links.is-open{display:flex;animation:drawerIn .22s var(--ease)}
  .nav-link{height:48px;display:flex;align-items:center;padding:0 16px;border-radius:12px;font-size:15px}
  .nav-link:hover::after{display:none}
  .nav-actions .btn-sm{display:none}
  .nav-toggle{display:flex}
  .cta-card{grid-template-columns:1fr}
  .aside-side{border-left:0;border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col:first-child{grid-column:1 / -1}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .metric-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .compare-card + .compare-card{border-left:0;border-top:1px solid var(--line)}
  .cover-row{grid-template-columns:1fr;gap:8px}
  .cover-row .row-val{text-align:left}
  .form-grid{grid-template-columns:1fr}
  .form-side,.aside-side{padding:28px 20px}
  .page-banner{padding:44px 0 40px}
  .banner-deco{display:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .site-footer{margin-top:56px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .brand-text{font-size:15px}
  .footer-grid{grid-template-columns:1fr}
  .barcard{padding:24px 20px}
}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* roulang page: category3 */
:root{
  --brand-900:#0B2C4D;
  --brand-700:#14538A;
  --brand-500:#2E7DBF;
  --brand-100:#E6F0FA;
  --brand-050:#F2F7FC;
  --accent-500:#E8A02C;
  --accent-600:#C9831A;
  --accent-050:#FFF6E8;
  --data-up:#1E9E6A;
  --ink-900:#16202B;
  --ink-700:#33414F;
  --ink-500:#5B6B7C;
  --ink-300:#93A2B0;
  --line:#E4ECF4;
  --surface:#FFFFFF;
  --bg:#F5F8FB;
  --radius-card:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(11,44,77,.04), 0 2px 8px rgba(11,44,77,.05);
  --sh-2:0 6px 18px rgba(11,44,77,.08);
  --sh-3:0 12px 32px rgba(11,44,77,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"DIN Alternate","Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--accent-500);}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:600;letter-spacing:.01em;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:16px;z-index:80;width:100%;padding:0 16px;transition:top .24s var(--ease);}
.nav-shell{
  width:min(1200px,100%);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:24px;
  padding:0 20px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.82);
  border:1px solid rgba(11,44,77,.08);
  box-shadow:var(--sh-2);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled .nav-shell{height:60px;background:rgba(255,255,255,.95);box-shadow:var(--sh-3);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--brand-900);font-size:16px;font-weight:600;letter-spacing:.01em;}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-700);font-size:15px;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--accent-500);
  transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-050);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{background:var(--brand-100);color:var(--brand-700);}
.nav-link.is-active::after{width:18px;}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--radius-pill);color:var(--brand-900);font-size:16px;
  align-items:center;justify-content:center;
}
.nav-drawer{
  display:none;
  width:min(1200px,100%);
  margin:10px auto 0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--sh-3);
  padding:10px;
  transform:translateY(-8px);
  opacity:0;
  pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.nav-drawer a{display:flex;align-items:center;height:48px;padding:0 16px;border-radius:14px;font-size:15px;font-weight:500;color:var(--ink-700);}
.nav-drawer a:hover,.nav-drawer a.is-active{background:var(--brand-050);color:var(--brand-700);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--accent-500);color:#fff;border-color:var(--accent-500);}
.btn-primary:hover{background:var(--accent-600);border-color:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:#BE7A16;}
.btn-ghost{background:var(--surface);color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.link-more i{transition:transform .2s var(--ease);}
.link-more:hover{color:var(--accent-500);}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 矮版 Banner ---------- */
.page-banner{
  position:relative;
  margin-top:-80px;
  padding:150px 0 64px;
  min-height:320px;
  background:
    linear-gradient(90deg,rgba(255,255,255,.94) 0%,rgba(255,255,255,.72) 52%,rgba(242,247,252,.55) 100%),
    linear-gradient(120deg,var(--brand-050) 0%,var(--bg) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;right:6%;bottom:-40px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,160,44,.18) 0%,rgba(232,160,44,0) 70%);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-500);margin-bottom:18px;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-700);}
.page-banner h1{font-size:clamp(28px,3.4vw,40px);line-height:1.28;max-width:760px;}
.page-banner .lead{margin-top:16px;font-size:16px;color:var(--ink-500);max-width:640px;}
.banner-deco{
  position:absolute;right:24px;bottom:24px;
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);
  color:var(--brand-700);font-size:18px;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag-chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--radius-pill);background:rgba(255,255,255,.86);
  border:1px solid var(--line);font-size:13px;color:var(--ink-700);
}

/* ---------- 搜索样态 ---------- */
.search-strip{margin-top:32px;}
.search-box{
  display:flex;align-items:center;gap:12px;
  height:48px;padding:0 22px;border-radius:var(--radius-pill);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-1);
  max-width:720px;
}
.search-box i{color:var(--brand-500);font-size:16px;}
.search-box input{
  flex:1;border:0;outline:none;background:transparent;height:100%;
  font-size:15px;color:var(--ink-900);
}
.search-box input::placeholder{color:var(--ink-300);}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(46,125,191,.18);}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.quick-tags a{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--radius-pill);background:var(--brand-100);
  color:var(--brand-700);font-size:13px;font-weight:500;
}
.quick-tags a:hover{background:var(--accent-050);color:var(--accent-600);}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{position:relative;padding-left:14px;font-size:26px;}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--accent-500);}
.section-head .sub{font-size:14px;color:var(--ink-500);margin-top:8px;padding-left:14px;}

/* ---------- 自查步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.step-card::before{content:"";position:absolute;left:24px;top:0;width:32px;height:3px;border-radius:0 0 3px 3px;background:var(--accent-500);}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100);}
.step-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;letter-spacing:-.02em;color:var(--brand-500);
}
.step-card h3{font-size:19px;margin-top:8px;}
.step-card p{margin-top:10px;font-size:14px;color:var(--ink-500);}
.step-card .step-img{margin-top:18px;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:16/9;}
.step-card .step-img img{width:100%;height:100%;object-fit:cover;}

/* ---------- 帮助主体 ---------- */
.help-layout{display:grid;grid-template-columns:3fr 9fr;gap:32px;align-items:start;}
.toc{
  position:sticky;top:100px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--sh-1);
}
.toc h3{font-size:15px;color:var(--ink-900);margin-bottom:12px;}
.toc a{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 12px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.toc a::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;
  background:transparent;transition:background .2s var(--ease);
}
.toc a:hover{background:var(--brand-050);color:var(--brand-700);}
.toc a.is-current{background:var(--brand-050);color:var(--brand-700);font-weight:500;}
.toc a.is-current::before{background:var(--accent-500);}
.toc a i{color:var(--brand-500);font-size:14px;width:16px;text-align:center;}
.toc-note{margin-top:16px;padding:16px;border-radius:var(--radius-sm);background:var(--brand-050);font-size:13px;color:var(--ink-500);}

.faq-group{margin-bottom:32px;}
.faq-group > h3{
  display:flex;align-items:center;gap:10px;
  font-size:17px;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.faq-group > h3 span.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:500;
}
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:16px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:var(--brand-100);box-shadow:var(--sh-2);}
.faq-item summary{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:16px 52px 16px 18px;font-size:16px;font-weight:500;color:var(--ink-900);
  cursor:pointer;list-style:none;min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:transparent;transition:background .2s var(--ease);
}
.faq-item summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--brand-700);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item[open]{border-color:var(--brand-100);}
.faq-item[open] summary::before{background:var(--accent-500);}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);color:var(--accent-500);}
.faq-item .faq-body{padding:0 18px 18px 18px;font-size:14.5px;color:var(--ink-500);line-height:1.85;}
.faq-item .faq-body p + p{margin-top:10px;}

/* ---------- 联系 CTA ---------- */
.cta-card{
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;
  background:var(--brand-900);
  border-radius:20px;padding:40px;color:#fff;box-shadow:var(--sh-2);
}
.cta-card h2{color:#fff;font-size:24px;}
.cta-card p{margin-top:12px;color:rgba(255,255,255,.78);font-size:15px;max-width:640px;}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.cta-side .small{font-size:13px;color:rgba(255,255,255,.7);}

/* ---------- 表单 ---------- */
.form-section{padding:0 0 96px;}
.form-card{
  display:grid;grid-template-columns:6fr 4fr;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  overflow:hidden;box-shadow:var(--sh-2);
}
.form-main{padding:40px;}
.form-main h2{font-size:24px;}
.form-main > p{margin-top:10px;font-size:14px;color:var(--ink-500);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:500;color:var(--ink-700);}
.field input,.field select,.field textarea{
  width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 16px;height:48px;color:var(--ink-900);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:14px 16px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300);}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(46,125,191,.18);}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:#D9534F;}
.field .err{display:none;font-size:12px;color:#D9534F;}
.field.has-error .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:20px;font-size:13px;color:var(--ink-500);}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--accent-500);}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px;}
.form-note{font-size:12.5px;color:var(--ink-300);}
.form-aside{background:var(--brand-050);padding:40px;border-left:1px solid var(--line);}
.form-aside h3{font-size:17px;}
.trust-list{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.trust-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700);line-height:1.7;}
.trust-list i{color:var(--data-up);margin-top:5px;font-size:13px;}
.aside-time{
  margin-top:24px;padding:16px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--line);
  font-size:13px;color:var(--ink-500);
}
.aside-time strong{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:18px;color:var(--brand-900);letter-spacing:-.02em;margin-top:6px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer-col h4{
  position:relative;color:#fff;font-size:14px;font-weight:600;
  padding-bottom:14px;margin-bottom:16px;
}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--accent-500);border-radius:2px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:600;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:var(--accent-500);}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px;}
.footer-links li{line-height:32px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-drawer{display:block;}
  .nav-actions .btn-sm{display:none;}
  .section{padding:72px 0;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .help-layout{grid-template-columns:1fr;}
  .toc{position:static;}
  .form-card{grid-template-columns:1fr;}
  .form-aside{border-left:0;border-top:1px solid var(--line);}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .footer-col:first-child{grid-column:1 / -1;}
  .page-banner{margin-top:-72px;padding:130px 0 56px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .site-header{top:12px;padding:0 12px;}
  .nav-shell{height:56px;padding:0 14px;gap:12px;}
  .site-header.is-scrolled .nav-shell{height:56px;}
  .brand{font-size:15px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:20px;}
  .steps{grid-template-columns:1fr;}
  .page-banner{margin-top:-68px;padding:118px 0 48px;min-height:280px;}
  .banner-deco{display:none;}
  .form-main,.form-aside{padding:24px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:479px){
  .page-banner h1{font-size:26px;}
  .btn{width:100%;}
  .cta-side{width:100%;}
  .form-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}