/* roulang page: index */
:root{
    --brand:#1A6BE0; --brand-dark:#1454B8; --brand-light:#EAF2FE;
    --coral:#FF7A45; --coral-light:#FFF1EB;
    --ink:#0F1B2D; --body:#46586E; --muted:#8296AC;
    --page:#F5F8FC; --card:#FFFFFF; --line:#E2E9F3; --ok:#1FA97A;
    --r-card:18px; --r-img:14px; --r-btn:12px;
    --shadow-card:0 10px 30px -12px rgba(15,43,86,.18);
    --shadow-dock:0 12px 34px -16px rgba(15,43,86,.28);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','Helvetica Neue',Arial,sans-serif;
    font-size:16px;line-height:1.75;color:var(--body);
    background:var(--page);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
  a:hover{color:var(--brand-dark);}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
  h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  :focus-visible{outline:3px solid rgba(26,107,224,.28);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
  @media (max-width:640px){ .container{padding:0 20px;} }

  .section{padding:80px 0;}
  @media (max-width:768px){ .section{padding:56px 0;} }
  .section-head{margin-bottom:40px;}
  .section-label{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;font-weight:600;color:var(--brand);
    background:var(--brand-light);border-radius:999px;padding:5px 14px;margin-bottom:14px;
  }
  .section-title{font-size:28px;line-height:1.35;}
  .section-desc{margin-top:12px;max-width:640px;color:var(--body);font-size:16px;}
  @media (max-width:768px){ .section-title{font-size:24px;} }

  /* ---------- Dock 导航 ---------- */
  .dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:60;padding:0 16px;pointer-events:none;}
  .dock{
    pointer-events:auto;
    max-width:1160px;margin:0 auto;height:68px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:0 14px 0 20px;border-radius:999px;
    background:rgba(255,255,255,.92);
    border:1px solid var(--line);
    box-shadow:var(--shadow-dock);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    transition:height .25s ease,padding .25s ease,box-shadow .25s ease,background-color .25s ease;
  }
  .dock.is-stuck{height:60px;background:rgba(255,255,255,.96);box-shadow:0 16px 38px -18px rgba(15,43,86,.4);}
  .dock-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;letter-spacing:-.01em;white-space:nowrap;}
  .dock-logo:hover{color:var(--ink);}
  .dock-logo-mark{
    width:34px;height:34px;border-radius:11px;flex:0 0 34px;
    background:linear-gradient(135deg,var(--brand) 0%,#3D8BF5 100%);
    display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:700;
  }
  .dock-nav{display:flex;align-items:center;gap:4px;}
  .dock-nav a{
    display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
    font-size:15px;color:var(--body);position:relative;font-weight:500;
  }
  .dock-nav a::after{
    content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
  }
  .dock-nav a:hover{color:var(--brand);}
  .dock-nav a:hover::after{transform:scaleX(1);}
  .dock-nav a.active{color:var(--brand);background:rgba(26,107,224,.1);font-weight:600;}
  .dock-nav a.active::after{display:none;}
  .dock-right{display:flex;align-items:center;gap:8px;}
  .dock-icon-btn{
    width:40px;height:40px;border-radius:999px;border:1px solid transparent;background:transparent;
    display:inline-flex;align-items:center;justify-content:center;color:var(--body);cursor:pointer;
    transition:background-color .2s ease,color .2s ease;
  }
  .dock-icon-btn:hover{background:var(--brand-light);color:var(--brand);}
  .dock-burger{display:none;}
  .drawer{
    position:fixed;inset:0;z-index:70;background:#fff;transform:translateX(100%);
    transition:transform .28s ease;display:flex;flex-direction:column;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
  .drawer-list{padding:8px 20px;flex:1;overflow-y:auto;}
  .drawer-list a{display:flex;align-items:center;height:44px;border-bottom:1px solid var(--line);color:var(--ink);font-size:16px;}
  .drawer-list a.active{color:var(--brand);font-weight:600;}
  .drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
  @media (max-width:1024px){
    .dock-nav{display:none;}
    .dock-burger{display:inline-flex;}
  }
  @media (max-width:520px){
    .dock-logo{font-size:14px;}
    .dock-logo-mark{width:30px;height:30px;flex:0 0 30px;font-size:13px;}
    .dock-right .btn-sm{display:none;}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;
    border:1px solid transparent;cursor:pointer;white-space:nowrap;
    transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -12px rgba(26,107,224,.7);}
  .btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;color:var(--brand);border-color:rgba(26,107,224,.4);}
  .btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);}
  .btn-coral{background:var(--coral);color:#fff;}
  .btn-coral:hover{background:#F2682F;color:#fff;transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 18px;font-size:15px;}
  .btn-block{width:100%;}
  .btn-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand);font-size:15px;}
  .btn-link .arrow{transition:transform .2s ease;}
  .btn-link:hover .arrow{transform:translateX(8px);}

  /* ---------- 卡片 / 徽章 ---------- */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -18px rgba(15,43,86,.28);border-color:#D3E0F2;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
    font-size:13px;font-weight:600;background:var(--brand-light);color:var(--brand);
  }
  .badge-coral{background:var(--coral-light);color:#E05A24;}
  .badge-ok{background:rgba(31,169,122,.12);color:var(--ok);}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;padding:132px 0 72px;
    background-image:linear-gradient(180deg,rgba(245,248,252,.94) 0%,rgba(234,242,254,.86) 100%),url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
  }
  .hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;}
  .hero h1{font-size:46px;line-height:1.2;letter-spacing:-.02em;}
  .hero-sub{margin-top:20px;font-size:19px;line-height:1.7;color:var(--body);max-width:560px;}
  .hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
  .hero-badges{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;}
  .hero-chip{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--body);background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:999px;padding:7px 16px;}
  .hero-chip svg{color:var(--brand);}
  .hero-visual{position:relative;border-radius:22px;overflow:hidden;min-height:360px;
    background-image:linear-gradient(180deg,rgba(26,107,224,.06),rgba(255,255,255,.12)),url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;border:1px solid var(--line);box-shadow:var(--shadow-card);}
  .hero-visual-card{
    position:absolute;left:22px;right:22px;bottom:22px;background:rgba(255,255,255,.96);
    border-radius:var(--r-img);border:1px solid var(--line);overflow:hidden;
    box-shadow:0 18px 40px -20px rgba(15,43,86,.4);
  }
  .hero-visual-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#EAF2FE;}
  .hero-visual-cap{padding:14px 16px;}
  .hero-visual-cap strong{display:block;color:var(--ink);font-size:15px;}
  .hero-visual-cap span{font-size:13px;color:var(--muted);}
  @media (max-width:1024px){
    .hero{padding:120px 0 56px;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .hero h1{font-size:36px;}
    .hero-visual{min-height:240px;max-height:280px;}
  }
  @media (max-width:520px){
    .hero h1{font-size:30px;}
    .hero-sub{font-size:17px;}
    .hero-visual{min-height:220px;}
  }

  /* ---------- 信任条 ---------- */
  .trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;}
  .trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
  .trust-item{display:flex;align-items:center;gap:12px;padding:26px 20px;border-left:1px solid var(--line);}
  .trust-item:first-child{border-left:none;}
  .trust-item svg{flex:0 0 22px;color:var(--brand);}
  .trust-item span{font-size:15px;font-weight:600;color:var(--ink);}
  @media (max-width:768px){
    .trust-grid{grid-template-columns:repeat(2,1fr);}
    .trust-item{border-left:none;border-top:1px solid var(--line);}
    .trust-item:nth-child(1),.trust-item:nth-child(2){border-top:none;}
    .trust-item:nth-child(even){border-left:1px solid var(--line);}
    .trust-item{padding:20px 16px;}
  }

  /* ---------- 阶梯 ---------- */
  .tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:end;}
  .tier{position:relative;padding:28px 22px;display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease;}
  .tier:hover{transform:translateY(-4px);box-shadow:0 22px 44px -18px rgba(15,43,86,.28);}
  .tier-1{min-height:300px;}
  .tier-2{min-height:330px;}
  .tier-3{min-height:360px;}
  .tier-4{min-height:390px;background:var(--brand);border-color:var(--brand);color:rgba(255,255,255,.9);}
  .tier-4 h3,.tier-4 .tier-num{color:#fff;}
  .tier-4 .tier-point{color:rgba(255,255,255,.9);}
  .tier-4 .tier-point svg{color:#BFD9FF;}
  .tier-4 .btn-link{color:#fff;}
  .tier-num{font-size:34px;font-weight:700;color:#D3E0F2;line-height:1;}
  .tier h3{font-size:19px;}
  .tier-note{font-size:14px;color:var(--muted);}
  .tier-4 .tier-note{color:rgba(255,255,255,.72);}
  .tier-points{display:flex;flex-direction:column;gap:10px;flex:1;}
  .tier-point{display:flex;gap:8px;font-size:14px;color:var(--body);line-height:1.6;}
  .tier-point svg{flex:0 0 16px;margin-top:5px;color:var(--brand);}
  .tier-tag{position:absolute;top:-12px;right:18px;background:var(--coral);color:#fff;font-size:13px;font-weight:600;border-radius:999px;padding:4px 14px;}
  @media (max-width:1024px){ .tier-grid{grid-template-columns:repeat(2,1fr);align-items:stretch;} .tier-1,.tier-2,.tier-3,.tier-4{min-height:auto;} }
  @media (max-width:640px){ .tier-grid{grid-template-columns:1fr;} }

  /* ---------- 对比表 ---------- */
  .compare{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;}
  .compare-row{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;border-top:1px solid var(--line);}
  .compare-row:first-child{border-top:none;}
  .compare-row > div{padding:16px 18px;font-size:14.5px;display:flex;align-items:center;}
  .compare-row > div + div{border-left:1px solid var(--line);}
  .compare-head{background:#F9FBFE;}
  .compare-head > div{font-weight:700;color:var(--ink);font-size:15px;}
  .compare-head .col-reco{background:var(--brand-light);color:var(--brand);position:relative;}
  .compare-label{color:var(--body);font-weight:500;}
  .col-reco{background:rgba(234,242,254,.6);}
  .compare-head .reco-tag{position:absolute;top:10px;right:14px;font-size:12px;background:var(--coral);color:#fff;border-radius:999px;padding:2px 10px;font-weight:600;}
  .compare-foot{background:#F9FBFE;}
  .compare-foot .col-reco{background:rgba(234,242,254,.9);}
  .check{color:var(--ok);font-weight:600;}
  .compare-mobile{display:none;}
  @media (max-width:900px){
    .compare{display:none;}
    .compare-mobile{display:grid;gap:16px;grid-template-columns:1fr;}
    .cm-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;}
    .cm-card.reco{border-color:var(--brand);}
    .cm-head{padding:16px 18px;background:#F9FBFE;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;}
    .cm-card.reco .cm-head{background:var(--brand-light);}
    .cm-head strong{color:var(--ink);font-size:16px;}
    .cm-item{padding:12px 18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;font-size:14.5px;}
    .cm-item:first-of-type{border-top:none;}
    .cm-item span:first-child{color:var(--muted);}
    .cm-foot{padding:16px 18px;border-top:1px solid var(--line);background:#F9FBFE;}
  }

  /* ---------- 限时带 ---------- */
  .flash{
    border-radius:22px;padding:40px;color:#fff;
    background:linear-gradient(120deg,#1A6BE0 0%,#2F7FEC 62%,#F2835A 100%);
    display:grid;grid-template-columns:1.1fr auto auto;gap:32px;align-items:center;
  }
  .flash h2{color:#fff;font-size:26px;}
  .flash p{margin-top:10px;color:rgba(255,255,255,.88);font-size:15px;max-width:460px;}
  .countdown{display:flex;gap:12px;}
  .cd-box{width:74px;text-align:center;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);border-radius:14px;padding:10px 0;}
  .cd-num{font-size:26px;font-weight:700;color:#fff;line-height:1.1;}
  .cd-label{font-size:12px;color:rgba(255,255,255,.82);margin-top:4px;}
  .flash .btn-ghost{background:#fff;color:var(--brand);border-color:#fff;}
  .flash .btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);}
  @media (max-width:1024px){
    .flash{grid-template-columns:1fr;gap:24px;padding:32px;}
    .cd-box{width:64px;}
  }

  /* ---------- 资讯卡片 ---------- */
  .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .news-card{display:flex;flex-direction:column;overflow:hidden;}
  .news-cover{position:relative;overflow:hidden;background:#EAF2FE;}
  .news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
  .news-card:hover .news-cover img{transform:scale(1.05);}
  .news-cover .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);}
  .news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .news-title{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-card:hover .news-title{color:var(--brand);}
  .news-summary{font-size:14px;color:var(--body);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
  .news-meta .arrow{color:var(--brand);transition:transform .2s ease;}
  .news-card:hover .news-meta .arrow{transform:translateX(4px);}
  .empty-state{
    border:1px dashed #C6D6EC;border-radius:var(--r-card);background:#fff;
    padding:52px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
  }
  .empty-state svg{color:#A9BFDA;}
  .empty-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;}
  .more-wrap{margin-top:36px;display:flex;justify-content:center;}
  .pager{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 26px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--body);font-weight:600;}
  .pager:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light);}
  @media (max-width:1024px){ .news-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:640px){ .news-grid{grid-template-columns:1fr;} }

  /* ---------- FAQ ---------- */
  .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
  .faq-item.open{border-color:#BBD3F5;box-shadow:var(--shadow-card);}
  .faq-q{width:100%;min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:14px 18px;background:transparent;border:none;cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:var(--ink);}
  .faq-q:hover{color:var(--brand);}
  .faq-q .chev{flex:0 0 18px;color:var(--brand);transition:transform .25s ease;}
  .faq-item.open .faq-q .chev{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;background:var(--brand-light);border-left:3px solid var(--brand);}
  .faq-a p{padding:14px 18px;font-size:14.5px;color:var(--body);line-height:1.8;}
  .faq-item.open .faq-a{max-height:320px;}
  @media (max-width:768px){ .faq-grid{grid-template-columns:1fr;} }

  /* ---------- 表单 / CTA ---------- */
  .contact-grid{display:grid;grid-template-columns:40% 60%;gap:32px;align-items:start;}
  .contact-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);}
  .contact-item:last-child{border-bottom:none;}
  .contact-item svg{flex:0 0 20px;color:var(--brand);margin-top:3px;}
  .contact-item strong{display:block;color:var(--ink);font-size:15px;}
  .contact-item span{font-size:14px;color:var(--body);}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);padding:28px;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
  .field label{font-size:14px;font-weight:600;color:var(--ink);}
  .field input,.field select,.field textarea{
    height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;background:#FCFDFF;
    transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  }
  .field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(26,107,224,.16);
  }
  .field input::placeholder,.field textarea::placeholder{color:#AEBECD;}
  .form-tip{margin-top:14px;font-size:13px;color:var(--muted);}
  .agree{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--body);margin-bottom:18px;}
  .agree input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);}
  @media (max-width:900px){ .contact-grid{grid-template-columns:1fr;} .form-row{grid-template-columns:1fr;} }

  /* ---------- 页脚 ---------- */
  .footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
  .footer h4{font-size:15px;margin-bottom:16px;}
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;margin-bottom:14px;}
  .footer p{font-size:14px;line-height:1.8;color:var(--body);}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:var(--body);}
  .footer-links a:hover{color:var(--brand);}
  .footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--muted);}
  @media (max-width:1024px){ .footer-grid{grid-template-columns:1fr 1fr;} }
  @media (max-width:640px){ .footer-grid{grid-template-columns:1fr;} }

/* roulang page: category1 */
:root{
  --brand:#1A6BE0;
  --brand-deep:#1454B8;
  --brand-soft:#EAF2FE;
  --accent:#FF7A45;
  --accent-soft:#FFF1EA;
  --ink:#0F1B2D;
  --body:#46586E;
  --mute:#8296AC;
  --line:#E2E9F3;
  --page:#F5F8FC;
  --card:#FFFFFF;
  --ok:#1FA97A;
  --r-card:18px;
  --r-pic:14px;
  --r-btn:12px;
  --shadow-card:0 10px 30px -12px rgba(15,43,86,.18);
  --shadow-hover:0 18px 42px -16px rgba(15,43,86,.28);
  --shadow-dock:0 12px 32px -16px rgba(15,43,86,.28);
  --ease:.25s cubic-bezier(.4,.2,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--page);
  color:var(--body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.35;font-weight:700}
p{margin:0}
::selection{background:var(--brand-soft);color:var(--brand-deep)}
:focus-visible{outline:3px solid rgba(26,107,224,.25);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:28px;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--body);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.badge{display:inline-flex;align-items:center;border-radius:999px;font-size:13px;font-weight:600;padding:5px 12px;background:var(--brand-soft);color:var(--brand)}
.badge-accent{background:var(--accent-soft);color:#D9541F}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Dock 导航 ---------- */
.dock{
  position:fixed;top:16px;left:16px;right:16px;z-index:60;
  max-width:1160px;margin:0 auto;height:68px;
  display:flex;align-items:center;gap:18px;
  padding:0 16px 0 18px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:var(--shadow-dock);
  transition:var(--ease);
}
.dock.is-stuck{height:60px;background:rgba(255,255,255,.96);box-shadow:0 16px 40px -18px rgba(15,43,86,.4)}
.dock-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;letter-spacing:-.01em;white-space:nowrap}
.dock-logo-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 34px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,#1A6BE0,#3F8BF2);
  color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 6px 16px -6px rgba(26,107,224,.6);
}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.dock-nav a{
  position:relative;padding:9px 13px;border-radius:999px;
  font-size:15px;color:var(--body);transition:var(--ease);white-space:nowrap;
}
.dock-nav a::after{
  content:'';position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:var(--ease);
}
.dock-nav a:hover{color:var(--brand);background:rgba(26,107,224,.06)}
.dock-nav a:hover::after{transform:scaleX(1)}
.dock-nav a.active{color:var(--brand);background:rgba(26,107,224,.1);font-weight:600}
.dock-nav a.active::after{transform:scaleX(0)}
.dock-right{display:flex;align-items:center;gap:10px;margin-left:14px}
.dock-icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid transparent;
  background:transparent;color:var(--body);display:grid;place-items:center;
  cursor:pointer;transition:var(--ease);
}
.dock-icon-btn:hover{background:var(--brand-soft);color:var(--brand)}
.dock-burger{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;font-weight:600;font-size:15px;
  cursor:pointer;transition:var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -12px rgba(26,107,224,.75)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.link-cta svg{transition:var(--ease)}
.link-cta:hover svg{transform:translateX(4px)}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--mute);flex-wrap:wrap;padding:24px 0 0}
.crumbs a{color:var(--brand);font-weight:500}
.crumbs a:hover{text-decoration:underline}
.crumbs span.sep{color:#C7D3E3}

/* ---------- Hero ---------- */
.hero{padding:32px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.2;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:20px;font-size:18px;color:var(--body);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-marks{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-mark{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--body);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px}
.hero-mark i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block}
.hero-visual{
  position:relative;border-radius:var(--r-pic);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  background:var(--brand-soft);aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand);
}

/* ---------- 准备事项卡片 ---------- */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prep-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;transition:var(--ease);
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.prep-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:18px;
}
.prep-card h3{font-size:19px;margin-bottom:10px}
.prep-card p{font-size:15px;color:var(--body)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative}
.tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-item:not(:last-child)::after{
  content:'';position:absolute;left:27px;top:62px;bottom:6px;width:2px;
  background:linear-gradient(180deg,#CFE0F8,#EAF2FE);
}
.tl-num{
  width:56px;height:56px;border-radius:50%;background:#fff;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--brand);font-weight:700;font-size:17px;
  font-variant-numeric:tabular-nums;box-shadow:var(--shadow-card);z-index:1;
}
.tl-body{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px;transition:var(--ease)}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5E4FA}
.tl-body h3{font-size:20px;margin-bottom:10px}
.tl-body p{font-size:15.5px;color:var(--body)}
.tl-note{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 宽幅图带 ---------- */
.wide-banner{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  min-height:280px;display:flex;align-items:center;border:1px solid var(--line);
  background:var(--brand-soft);
}
.wide-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.wide-banner::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(234,242,254,.8) 55%,rgba(26,107,224,.12) 100%);
}
.wide-banner-text{position:relative;z-index:2;padding:44px;max-width:600px}
.wide-banner-text h2{font-size:26px;margin:14px 0 12px}
.wide-banner-text p{font-size:16px}

/* ---------- 排查长条 ---------- */
.check-list{display:grid;gap:16px}
.check-row{
  display:grid;grid-template-columns:250px 1fr;gap:28px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;transition:var(--ease);
}
.check-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5E4FA}
.check-key{display:flex;align-items:flex-start;gap:12px;font-weight:600;color:var(--ink);font-size:16px;line-height:1.6}
.check-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);flex:0 0 10px;margin-top:9px}
.check-val{font-size:15.5px;color:var(--body)}

/* ---------- FAQ ---------- */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:var(--ease);
}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:48px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-weight:600;color:var(--ink);font-size:17px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--brand-soft)}
.faq-arrow{flex:0 0 auto;color:var(--mute);transition:var(--ease)}
.faq-item[open]{border-color:#C9DDFB;background:#F7FAFF;border-left:3px solid var(--brand)}
.faq-item[open] summary{color:var(--brand);background:transparent}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--brand)}
.faq-body{padding:0 22px 22px;font-size:15.5px;color:var(--body)}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(115deg,#1A6BE0 0%,#2C7BEC 58%,#4E93F4 100%);
  border-radius:26px;padding:56px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 24px 60px -28px rgba(20,84,184,.75);
}
.cta-band h2{color:#fff;font-size:28px;letter-spacing:-.01em}
.cta-band p{color:rgba(255,255,255,.86);margin-top:12px;font-size:16px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-light{background:#fff;color:var(--brand);border-color:#fff}
.btn-light:hover{background:#F2F7FF;transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}

/* ---------- 页脚 ---------- */
.footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;margin-bottom:16px}
.footer h4{font-size:16px;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:var(--body);font-size:15px;transition:var(--ease);width:fit-content}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer p{font-size:14.5px;color:var(--body);max-width:340px}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:14px;color:var(--mute);
}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;background:#fff;z-index:90;
  transform:translateY(-100%);transition:transform .3s cubic-bezier(.4,.2,.2,1);
  display:flex;flex-direction:column;padding:20px 20px 24px;
}
.mobile-drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-top .drawer-close{margin-left:auto}
.drawer-nav{display:grid;margin-top:12px}
.drawer-nav a{
  min-height:44px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);color:var(--body);font-size:16px;
}
.drawer-nav a.active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero h1{font-size:38px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:620px}
  .prep-grid{grid-template-columns:repeat(2,1fr)}
  .check-row{grid-template-columns:1fr;gap:12px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .dock-nav{display:none}
  .dock-burger{display:grid}
  .dock-right{margin-left:auto}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head h2{font-size:24px}
  .hero{padding:24px 0 56px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:17px}
  .cta-band{padding:40px 28px;border-radius:22px}
  .cta-band h2{font-size:24px}
  .wide-banner-text{padding:32px 24px}
  .wide-banner-text h2{font-size:22px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .prep-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:44px 1fr;gap:16px}
  .tl-num{width:44px;height:44px;font-size:15px}
  .tl-item:not(:last-child)::after{left:21px;top:50px}
  .footer-grid{grid-template-columns:1fr}
  .footer{padding-top:48px}
  .hero-cta .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .dock-logo span:last-child{font-size:15px}
}

/* roulang page: article */
:root{
  --brand:#1A6BE0;
  --brand-deep:#1454B8;
  --brand-soft:#EAF2FE;
  --accent:#FF7A45;
  --ink:#0F1B2D;
  --body:#46586E;
  --muted:#8296AC;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --border:#E2E9F3;
  --ok:#1FA97A;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 10px 30px -12px rgba(15,43,86,.18);
  --shadow-dock:0 10px 30px -14px rgba(15,43,86,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (max-width:640px){.container{padding:0 20px}}

/* ============ Dock 导航 ============ */
.dock{
  position:fixed;top:16px;left:16px;right:16px;z-index:80;
  max-width:1160px;margin:0 auto;height:68px;
  display:flex;align-items:center;gap:14px;
  padding:0 12px 0 18px;
  border-radius:999px;
  background:rgba(255,255,255,.8);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--border);
  box-shadow:var(--shadow-dock);
  transition:background .25s ease,box-shadow .25s ease,padding .25s ease;
}
.dock.is-stuck{background:rgba(255,255,255,.96);box-shadow:0 18px 40px -18px rgba(15,43,86,.32)}
.dock-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);letter-spacing:-.01em;font-size:15px;white-space:nowrap;flex-shrink:0}
.dock-logo-mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),#4E93F2);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.dock-nav a{padding:8px 12px;border-radius:999px;font-size:14.5px;color:#5A6B80;transition:color .2s,background .2s;position:relative;white-space:nowrap}
.dock-nav a::after{content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;background:var(--brand);transform:translateX(-50%);transition:width .22s ease}
.dock-nav a:hover{color:var(--brand);background:var(--brand-soft)}
.dock-nav a:hover::after{width:14px}
.dock-nav a.active{color:var(--brand);background:var(--brand-soft);font-weight:600}
.dock-right{display:flex;align-items:center;gap:8px;margin-left:8px}
.dock-icon-btn{width:40px;height:40px;border-radius:999px;display:flex;align-items:center;justify-content:center;color:#5A6B80;transition:background .2s,color .2s}
.dock-icon-btn:hover{background:var(--brand-soft);color:var(--brand)}
.dock-burger{display:none}
@media (max-width:1023px){
  .dock-nav{display:none}
  .dock-burger{display:flex}
}
@media (max-width:480px){
  .dock{gap:8px;padding:0 10px 0 14px}
  .dock-logo span:last-child{font-size:14px;max-width:130px;overflow:hidden;text-overflow:ellipsis}
  .dock-right .btn{display:none}
}
.dock-drawer{position:fixed;inset:0;z-index:95;background:#fff;display:none}
.dock-drawer.open{display:block;animation:drawerIn .22s ease}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.dock-drawer-inner{padding:22px 20px 24px;height:100%;display:flex;flex-direction:column}
.dock-drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border)}
.dock-drawer nav{margin-top:6px;flex:1;overflow-y:auto}
.dock-drawer nav a{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--border);color:#3C4E64;font-size:15.5px}
.dock-drawer nav a::after{content:"›";color:#B7C6D8}
.dock-drawer nav a.active{color:var(--brand);font-weight:600}
.dock-drawer-cta{padding-top:18px}
.dock-drawer-cta .btn{width:100%}

/* ============ 按钮 / 通用件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -10px rgba(26,107,224,.7)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-plain{background:#fff;color:#fff;border:1px solid rgba(255,255,255,.7);background:transparent}
.btn-plain:hover{background:rgba(255,255,255,.14)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(26,107,224,.25);outline-offset:2px;border-radius:var(--radius-btn);
}
.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600}
.link-cta .arrow{transition:transform .22s ease}
.link-cta:hover .arrow{transform:translateX(8px)}

/* ============ 主体 ============ */
.page-main{padding-top:120px;padding-bottom:0}
@media (max-width:640px){.page-main{padding-top:104px}}

.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);flex-wrap:nowrap;overflow:hidden}
.breadcrumb a{color:var(--brand);flex-shrink:0}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:#C6D3E3;flex-shrink:0}
.breadcrumb .current{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#5A6B80}

.article-head{margin-top:22px;padding-bottom:26px;border-bottom:1px solid var(--border)}
.article-pill{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600}
.article-title{margin-top:16px;font-size:clamp(26px,3.4vw,36px);line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em;max-width:920px}
.article-meta{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CBD8E8;display:inline-block}

.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;margin-top:32px;align-items:start}
@media (max-width:1023px){.article-layout{grid-template-columns:1fr}}
.article-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:36px 40px}
@media (max-width:640px){.article-panel{padding:24px 18px}}

/* 正文排版 */
.prose-cn{max-width:800px;font-size:16.5px;line-height:1.9;color:var(--body);overflow-wrap:break-word}
.prose-cn p{margin:0 0 20px}
.prose-cn h2{position:relative;margin:48px 0 18px;padding-left:14px;font-size:24px;line-height:1.4;font-weight:700;color:var(--ink)}
.prose-cn h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
.prose-cn h3{margin:32px 0 14px;font-size:19px;font-weight:700;color:var(--ink)}
.prose-cn h4{margin:24px 0 12px;font-size:17px;font-weight:700;color:var(--ink)}
.prose-cn a{color:var(--brand);border-bottom:1px solid rgba(26,107,224,.35)}
.prose-cn a:hover{border-bottom-color:var(--brand)}
.prose-cn ul,.prose-cn ol{margin:0 0 20px;padding-left:22px}
.prose-cn ul li{list-style:disc;margin-bottom:10px}
.prose-cn ol li{list-style:decimal;margin-bottom:10px}
.prose-cn blockquote{margin:24px 0;padding:16px 20px;border-left:4px solid var(--brand);background:var(--brand-soft);border-radius:0 12px 12px 0;color:#33465C}
.prose-cn blockquote p:last-child{margin-bottom:0}
.prose-cn img{border-radius:var(--radius-img);box-shadow:0 12px 28px -18px rgba(15,43,86,.45);margin:24px 0;height:auto}
.prose-cn .table-scroll{width:100%;overflow-x:auto;margin:24px 0;-webkit-overflow-scrolling:touch}
.prose-cn table{width:100%;min-width:520px;border-collapse:collapse;font-size:15px}
.prose-cn th,.prose-cn td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.prose-cn th{background:var(--brand-soft);color:var(--ink);font-weight:600}
.prose-cn code{background:#F1F5FB;padding:2px 6px;border-radius:6px;font-size:14.5px}
.prose-cn hr{border:none;border-top:1px solid var(--border);margin:36px 0}

.article-tags{margin-top:36px;padding-top:24px;border-top:1px dashed var(--border);display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.article-tags .tag-label{font-size:13px;color:var(--muted);margin-right:4px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;transition:background .2s,color .2s}
.tag:hover{background:var(--brand);color:#fff}
.tag.accent{background:#FFF0E8;color:#D2581F}
.tag.accent:hover{background:var(--accent);color:#fff}

/* 空态 */
.empty-state{
  border:1.5px dashed #CFDCEC;border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;background:#FBFDFF;
}
.empty-icon{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center}
.empty-state h2{font-size:20px;color:var(--ink);font-weight:700}
.empty-state p{margin-top:10px;font-size:15px;color:var(--muted)}
.empty-actions{margin-top:22px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* 侧栏 */
.article-side{position:sticky;top:104px}
@media (max-width:1023px){.article-side{position:static}}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:22px;margin-bottom:20px}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:9px}
.side-card h3::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--brand)}
.side-card .side-note{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.7}
.side-list li+li{margin-top:4px}
.side-list a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14.5px;color:#4A5D73;transition:background .2s,color .2s,transform .2s}
.side-list a:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(3px)}
.side-list .idx{width:22px;height:22px;border-radius:7px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.side-cta{background:linear-gradient(140deg,#1A6BE0,#3B84EE);border:none;color:#fff;box-shadow:0 16px 34px -18px rgba(26,107,224,.85)}
.side-cta h3{color:#fff}
.side-cta h3::before{background:rgba(255,255,255,.85)}
.side-cta p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.88)}
.side-cta .btn{width:100%;margin-top:16px;background:#fff;color:var(--brand)}
.side-cta .btn:hover{background:#EAF2FE}

/* 上一篇 / 下一篇 */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
@media (max-width:640px){.prevnext{grid-template-columns:1fr}}
.pn-card{display:block;background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px 20px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.pn-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:#CFE0F7}
.pn-label{font-size:12.5px;color:var(--brand);font-weight:600;letter-spacing:.02em}
.pn-title{margin-top:6px;font-size:15px;color:var(--ink);font-weight:600;line-height:1.55}
.pn-sub{margin-top:4px;font-size:13px;color:var(--muted)}
.pn-card.next{text-align:right}

/* 相关推荐 */
.related{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.section-head h2{font-size:clamp(20px,2.2vw,26px);color:var(--ink);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:26px}
@media (max-width:900px){.related-grid{grid-template-columns:1fr}}
.rel-card{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:#CFE0F7}
.rel-cover{position:relative;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-cover img{transform:scale(1.045)}
.rel-body{padding:18px;display:flex;flex-direction:column;gap:9px;flex:1}
.rel-badge{align-self:flex-start;font-size:12px;height:24px;padding:0 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;font-weight:600}
.rel-body h3{font-size:16px;color:var(--ink);font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:13.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.rel-foot .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.rel-card:hover .rel-foot .go .arrow{transform:translateX(6px)}
.rel-foot .go .arrow{transition:transform .22s ease}

/* 底部 CTA */
.bottom-cta{
  margin-top:56px;border-radius:20px;padding:40px;
  background:linear-gradient(135deg,#1A6BE0 0%,#2E7EEE 62%,#4E93F2 100%);
  color:#fff;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  box-shadow:0 22px 48px -26px rgba(26,107,224,.9);
}
.bottom-cta h2{font-size:clamp(20px,2.3vw,26px);font-weight:700;letter-spacing:-.01em}
.bottom-cta p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.9);max-width:640px}
.bottom-cta .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
@media (max-width:640px){.bottom-cta{padding:28px 22px}}

/* ============ 页脚 ============ */
.footer{background:#fff;border-top:1px solid var(--border);margin-top:80px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);margin-bottom:14px;font-size:15px}
.footer p{font-size:14px;color:var(--muted);line-height:1.85}
.footer h4{font-size:15px;color:var(--ink);margin-bottom:14px;font-weight:700}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#5A6B80;transition:color .2s,transform .2s;width:fit-content}
.footer-links a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{margin-top:44px;border-top:1px solid var(--border);padding:20px 0 28px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted)}

/* roulang page: category2 */
:root{
    --brand:#1A6BE0;
    --brand-deep:#1454B8;
    --brand-soft:#EAF2FE;
    --accent:#FF7A45;
    --accent-soft:#FFF1EA;
    --ink:#0F1B2D;
    --text:#46586E;
    --muted:#8296AC;
    --page:#F5F8FC;
    --card:#FFFFFF;
    --line:#E2E9F3;
    --ok:#1FA97A;
    --shadow-card:0 10px 30px -12px rgba(15,43,86,.18);
    --shadow-dock:0 14px 40px -18px rgba(15,43,86,.28);
    --radius-card:18px;
    --radius-pic:14px;
    --radius-btn:12px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--page);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{background:none;border:0;}
  :focus-visible{outline:3px solid rgba(26,107,224,.3);outline-offset:2px;border-radius:8px;}
  h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3;font-weight:700;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){ .container{padding:0 24px;} }
  .tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

  /* ---------- Dock 导航 ---------- */
  .dock{
    position:fixed;top:16px;left:50%;transform:translateX(-50%);
    width:calc(100% - 32px);max-width:1160px;height:68px;
    display:flex;align-items:center;gap:16px;
    padding:0 14px 0 16px;
    background:rgba(255,255,255,.92);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border:1px solid var(--line);
    border-radius:999px;
    box-shadow:var(--shadow-dock);
    z-index:60;
    transition:height .25s ease, background .25s ease, box-shadow .25s ease;
  }
  .dock.is-stuck{
    height:60px;
    background:rgba(255,255,255,.96);
    box-shadow:0 18px 46px -18px rgba(15,43,86,.34);
  }
  .dock-logo{display:flex;align-items:center;gap:10px;flex:none;font-weight:700;letter-spacing:-.01em;color:var(--ink);font-size:15px;white-space:nowrap;}
  .dock-logo-mark{
    width:32px;height:32px;flex:none;border-radius:10px;
    background:linear-gradient(135deg,var(--brand),var(--brand-deep));
    color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;
  }
  .dock-nav{flex:1;display:flex;align-items:center;justify-content:center;gap:2px;}
  .dock-nav a{
    position:relative;padding:9px 13px;border-radius:999px;
    font-size:14.5px;color:var(--text);white-space:nowrap;
    transition:color .2s ease, background .2s ease;
  }
  .dock-nav a::after{
    content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
    border-radius:2px;background:var(--brand);
    transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
  }
  .dock-nav a:hover{color:var(--brand);}
  .dock-nav a:hover::after{transform:scaleX(1);}
  .dock-nav a.active{color:var(--brand);background:rgba(26,107,224,.10);font-weight:600;}
  .dock-nav a.active::after{transform:scaleX(0);}
  .dock-right{display:flex;align-items:center;gap:8px;flex:none;}
  .dock-icon-btn{
    width:40px;height:40px;border-radius:999px;display:grid;place-items:center;
    color:var(--text);cursor:pointer;transition:background .2s ease,color .2s ease;
  }
  .dock-icon-btn:hover{background:var(--brand-soft);color:var(--brand);}
  .dock-burger{display:none;}

  .dock-drawer{
    position:fixed;top:96px;left:16px;right:16px;z-index:59;
    background:#fff;border:1px solid var(--line);border-radius:22px;
    box-shadow:0 24px 60px -24px rgba(15,43,86,.35);
    padding:10px 8px 8px;display:none;
  }
  .dock-drawer.open{display:block;}
  .dock-drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    height:46px;padding:0 14px;border-radius:12px;
    font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);
  }
  .dock-drawer a.drawer-link:last-of-type{border-bottom:0;}
  .dock-drawer a.drawer-link.active{color:var(--brand);background:var(--brand-soft);font-weight:600;}
  .dock-drawer .drawer-cta{margin:10px 8px 6px;width:calc(100% - 16px);}

  @media (max-width:1023px){
    .dock-nav{display:none;}
    .dock-right .btn{display:none;}
    .dock-burger{display:grid;}
    .dock{justify-content:space-between;}
  }
  @media (max-width:520px){
    .dock-logo span:last-child{font-size:14px;}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);font-weight:600;
    border:1px solid transparent;cursor:pointer;
    transition:transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease, border-color .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(26,107,224,.75);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-lg{height:50px;padding:0 24px;font-size:16px;}
  .btn-block{width:100%;}
  .link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px;}
  .link-cta svg{transition:transform .2s ease;}
  .link-cta:hover svg{transform:translateX(4px);}

  /* ---------- 通用区块 ---------- */
  .page-top{padding-top:104px;}
  .section{padding:56px 0;}
  @media (min-width:1024px){ .section{padding:80px 0;} }
  .section-head{max-width:720px;margin-bottom:32px;}
  @media (min-width:1024px){ .section-head{margin-bottom:40px;} }
  .eyebrow{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;
    background:var(--brand-soft);color:var(--brand-deep);
    font-size:13px;font-weight:600;margin-bottom:14px;
  }
  .section-head h2{font-size:24px;}
  @media (min-width:1024px){ .section-head h2{font-size:28px;} }
  .section-head p{margin-top:12px;color:var(--text);font-size:15.5px;}

  /* ---------- 面包屑 ---------- */
  .crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);flex-wrap:wrap;}
  .crumb a{color:var(--brand);}
  .crumb a:hover{text-decoration:underline;}
  .crumb .sep{color:var(--line);}
  .crumb .now{color:var(--text);}

  /* ---------- Hero ---------- */
  .cat-hero{display:grid;gap:32px;align-items:center;}
  @media (min-width:1024px){ .cat-hero{grid-template-columns:1.05fr .95fr;gap:48px;} }
  .cat-hero h1{font-size:30px;line-height:1.25;}
  @media (min-width:768px){ .cat-hero h1{font-size:38px;} }
  @media (min-width:1024px){ .cat-hero h1{font-size:44px;} }
  .cat-hero .lead{margin-top:16px;font-size:16.5px;color:var(--text);max-width:560px;}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
    font-size:13px;font-weight:600;
  }
  .badge-brand{background:var(--brand-soft);color:var(--brand-deep);}
  .badge-accent{background:var(--accent-soft);color:#C4522A;}
  .badge-ok{background:#E7F6F0;color:#127A57;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .shot-frame{
    background:var(--card);border:1px solid var(--line);border-radius:22px;
    padding:12px;box-shadow:var(--shadow-card);
  }
  .pic-box{
    position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--radius-pic);
    overflow:hidden;background:var(--brand-soft);
  }
  .pic-box img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
  .pic-box.is-4x3{aspect-ratio:4/3;}
  .shot-frame:hover .pic-box img{transform:scale(1.03);}

  /* ---------- 筛选胶囊条 ---------- */
  .chip-bar{
    display:flex;gap:10px;overflow-x:auto;padding:6px 2px 12px;
    scrollbar-width:thin;-webkit-overflow-scrolling:touch;
  }
  .chip-bar::-webkit-scrollbar{height:6px;}
  .chip-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
  .chip{
    flex:none;display:inline-flex;align-items:center;gap:6px;
    height:40px;padding:0 18px;border-radius:999px;
    background:#fff;border:1px solid var(--line);
    font-size:14px;color:var(--text);cursor:pointer;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .chip:hover{border-color:#CFE0F8;color:var(--brand);transform:translateY(-1px);}
  .chip.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

  /* ---------- 交错图文带 ---------- */
  .lane{display:grid;gap:26px;align-items:center;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;}
  .lane + .lane{margin-top:24px;}
  .lane:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:#CFE0F8;}
  @media (min-width:900px){
    .lane{grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:36px;}
    .lane.flip .lane-media{order:2;}
    .lane.flip .lane-body{order:1;}
  }
  .lane-body .idx{
    display:inline-block;font-size:13px;font-weight:700;color:var(--brand);
    background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;
  }
  .lane-body h3{font-size:20px;margin-bottom:10px;}
  .lane-body .desc{font-size:15px;color:var(--text);}
  .lane-points{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
  .lane-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text);}
  .tick{
    width:20px;height:20px;flex:none;border-radius:999px;margin-top:3px;
    display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);
  }
  .lane-foot{margin-top:20px;}

  /* ---------- 对比长条 ---------- */
  .compare-list{display:flex;flex-direction:column;gap:14px;}
  .compare-row{
    display:grid;grid-template-columns:48px minmax(0,1fr);gap:16px;align-items:center;
    padding:20px 22px;background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius-card);transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  }
  .compare-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:#CFE0F8;}
  @media (min-width:900px){
    .compare-row{grid-template-columns:64px minmax(0,1fr) auto;gap:24px;padding:24px 28px;}
  }
  .compare-no{font-size:24px;font-weight:700;color:var(--brand);line-height:1;letter-spacing:-.02em;}
  @media (min-width:900px){ .compare-no{font-size:30px;} }
  .compare-main h3{font-size:17px;margin-bottom:6px;}
  .compare-main p{font-size:14.5px;color:var(--text);}
  .compare-tags{display:flex;flex-wrap:wrap;gap:8px;grid-column:1 / -1;}
  @media (min-width:900px){ .compare-tags{grid-column:auto;justify-content:flex-end;} }
  .tag{
    display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
    background:var(--page);border:1px solid var(--line);font-size:12.5px;color:var(--muted);
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .22s ease, background .22s ease;}
  .faq-item.open{border-color:#CFE0F8;background:var(--brand-soft);}
  .faq-q{
    width:100%;min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 20px;text-align:left;font-size:15.5px;font-weight:600;color:var(--ink);cursor:pointer;
    transition:color .2s ease;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-item.open .faq-q{color:var(--brand);}
  .faq-arrow{flex:none;transition:transform .25s ease;color:currentColor;}
  .faq-item.open .faq-arrow{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-item.open .faq-a{max-height:340px;}
  .faq-a-inner{
    margin:0 20px 20px;padding-left:14px;border-left:3px solid var(--brand);
    font-size:14.5px;color:var(--text);
  }

  /* ---------- 表单 ---------- */
  .contact-wrap{display:grid;gap:28px;}
  @media (min-width:1024px){ .contact-wrap{grid-template-columns:.9fr 1.1fr;gap:44px;} }
  .contact-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);}
  .contact-item:last-child{border-bottom:0;}
  .contact-ico{
    width:40px;height:40px;flex:none;border-radius:12px;display:grid;place-items:center;
    background:var(--brand-soft);color:var(--brand);
  }
  .contact-item h4{font-size:15px;margin-bottom:4px;}
  .contact-item p{font-size:14px;color:var(--text);}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow-card);}
  @media (min-width:768px){ .form-card{padding:32px;} }
  .form-grid{display:grid;gap:18px;}
  @media (min-width:768px){ .form-grid.two{grid-template-columns:1fr 1fr;} }
  .field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px;}
  .input{
    width:100%;height:44px;padding:0 14px;border:1px solid var(--line);
    border-radius:12px;background:#fff;font-size:14.5px;
    transition:border-color .18s ease, box-shadow .18s ease;
  }
  textarea.input{height:auto;min-height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .input::placeholder{color:#A9B8CB;}
  .input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,107,224,.18);}
  .check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text);}
  .check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex:none;}
  .form-note{font-size:12.5px;color:var(--muted);margin-top:14px;}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:24px;
    background:linear-gradient(120deg,#1A6BE0 0%, #2F7EEA 55%, #4A8FF0 100%);
    color:#fff;padding:36px 26px;
    display:grid;gap:22px;align-items:center;
  }
  @media (min-width:900px){ .cta-band{grid-template-columns:1.4fr auto;padding:46px 44px;} }
  .cta-band::after{
    content:"";position:absolute;right:-80px;top:-70px;width:300px;height:300px;
    border-radius:50%;background:rgba(255,122,69,.28);filter:blur(6px);
  }
  .cta-band h2{color:#fff;font-size:24px;position:relative;}
  .cta-band p{color:rgba(255,255,255,.9);margin-top:10px;font-size:15px;max-width:620px;position:relative;}
  .cta-band .btn-primary{background:#fff;color:var(--brand-deep);position:relative;}
  .cta-band .btn-primary:hover{background:#F2F7FF;color:var(--brand-deep);}

  /* ---------- 页脚 ---------- */
  .footer{background:#fff;border-top:1px solid var(--line);margin-top:80px;}
  .footer-grid{display:grid;gap:32px;padding:56px 0 32px;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;} }
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:15.5px;margin-bottom:14px;}
  .footer p{font-size:14px;color:var(--text);}
  .footer h4{font-size:15px;margin-bottom:16px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14.5px;color:var(--text);transition:color .18s ease, transform .18s ease;}
  .footer-links a:hover{color:var(--brand);transform:translateX(3px);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center;
    border-top:1px solid var(--line);padding:20px 0;font-size:13.5px;color:var(--muted);
  }
  @media (max-width:520px){
    .cat-hero h1{font-size:26px;}
    .cta-band h2{font-size:21px;}
    .section{padding:48px 0;}
  }

/* roulang page: category3 */
:root{
    --brand:#1A6BE0;
    --brand-dark:#1454B8;
    --brand-light:#EAF2FE;
    --accent:#FF7A45;
    --accent-light:#FFF1EA;
    --ink:#0F1B2D;
    --text:#46586E;
    --muted:#8296AC;
    --bg:#F5F8FC;
    --surface:#FFFFFF;
    --line:#E2E9F3;
    --ok:#1FA97A;
    --r-card:18px;
    --r-img:14px;
    --r-btn:12px;
    --shadow-card:0 10px 30px -12px rgba(15,43,86,.18);
    --shadow-hover:0 22px 44px -20px rgba(15,43,86,.30);
    --shadow-dock:0 14px 36px -20px rgba(15,43,86,.32);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body.site-body{
    margin:0;
    padding-top:108px;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
    font-size:16px;
    line-height:1.75;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease;}
  button{font:inherit;color:inherit;}
  .mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-variant-numeric:tabular-nums;}

  /* ---------- 容器 ---------- */
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

  /* ---------- 浮动 Dock 导航 ---------- */
  .dock{
    position:fixed;
    top:16px;left:16px;right:16px;
    max-width:1160px;
    margin:0 auto;
    height:68px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:0 14px 0 20px;
    border-radius:999px;
    background:rgba(255,255,255,.92);
    border:1px solid var(--line);
    box-shadow:var(--shadow-dock);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    z-index:100;
    transition:height .25s ease,background-color .25s ease,box-shadow .25s ease;
  }
  .dock.is-stuck{
    height:60px;
    background:rgba(255,255,255,.97);
    box-shadow:0 18px 42px -22px rgba(15,43,86,.42);
  }
  .dock-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);letter-spacing:-.01em;font-size:16px;white-space:nowrap;}
  .dock-logo-mark{
    width:34px;height:34px;flex:0 0 34px;border-radius:11px;
    background:linear-gradient(135deg,#1A6BE0,#4C8FF2);
    color:#fff;display:grid;place-items:center;
    font-size:16px;font-weight:700;
    box-shadow:0 8px 18px -8px rgba(26,107,224,.75);
  }
  .dock-nav{display:flex;align-items:center;gap:2px;}
  .dock-nav a{
    position:relative;
    padding:9px 14px;
    border-radius:999px;
    font-size:15px;
    color:var(--text);
    transition:color .2s ease,background-color .2s ease;
  }
  .dock-nav a::after{
    content:"";position:absolute;left:50%;bottom:4px;
    width:0;height:2px;border-radius:2px;background:var(--brand);
    transform:translateX(-50%);transition:width .22s ease;
  }
  .dock-nav a:hover{color:var(--brand);background:var(--brand-light);}
  .dock-nav a:hover::after{width:18px;}
  .dock-nav a.active{color:var(--brand);font-weight:600;background:rgba(26,107,224,.10);}
  .dock-nav a.active::after{width:0;}
  .dock-right{display:flex;align-items:center;gap:8px;}
  .dock-icon-btn{
    width:40px;height:40px;border-radius:999px;
    display:grid;place-items:center;
    background:transparent;border:1px solid transparent;color:var(--text);
    cursor:pointer;transition:background-color .2s ease,color .2s ease,transform .2s ease;
  }
  .dock-icon-btn:hover{background:var(--brand-light);color:var(--brand);}
  .dock-icon-btn:active{transform:scale(.94);}
  .dock-burger{display:none;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);border:1px solid transparent;
    font-weight:600;cursor:pointer;white-space:nowrap;
    transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 24px -14px rgba(26,107,224,.9);}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
  .btn-outline:hover{background:var(--brand-light);transform:translateY(-1px);}
  .btn-sm{padding:9px 18px;font-size:14px;}
  .btn-lg{padding:14px 28px;font-size:16px;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand);font-weight:600;font-size:15px;
  }
  .link-arrow svg{transition:transform .22s ease;}
  .link-arrow:hover svg{transform:translateX(5px);}
  .link-arrow:hover{color:var(--brand-dark);}
  .btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible,
  input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:3px solid rgba(26,107,224,.22);
    outline-offset:2px;
    border-color:var(--brand);
    border-radius:var(--r-btn);
  }

  /* ---------- 移动抽屉 ---------- */
  .dock-drawer{
    position:fixed;inset:0;background:#fff;z-index:120;
    display:flex;flex-direction:column;
    transform:translateY(-102%);
    visibility:hidden;
    transition:transform .3s ease,visibility .3s ease;
  }
  .dock-drawer.open{transform:translateY(0);visibility:visible;}
  .dock-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
  .dock-drawer-list{flex:1;overflow-y:auto;padding:8px 0;}
  .dock-drawer-list a{
    display:flex;align-items:center;min-height:44px;padding:0 20px;
    font-size:16px;color:var(--text);border-bottom:1px solid var(--line);
  }
  .dock-drawer-list a.active{color:var(--brand);font-weight:600;background:var(--brand-light);}
  .dock-drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
  .dock-drawer-foot .btn{width:100%;}

  /* ---------- 通用板块 ---------- */
  .section{padding:80px 0;}
  .section-white{background:var(--surface);}
  .section-head{max-width:760px;margin-bottom:40px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.06em;
    color:var(--brand);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);}
  .h2{font-size:clamp(23px,2.6vw,28px);line-height:1.35;font-weight:700;color:var(--ink);margin:14px 0 12px;letter-spacing:-.01em;}
  .h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--ink);margin:0 0 10px;}
  .lead{font-size:17px;color:var(--text);margin:0;}
  .muted{color:var(--muted);font-size:14px;}

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    padding:56px 0 60px;
    overflow:hidden;
  }
  .page-head::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(226,233,243,.9) 1px,transparent 1px),
      linear-gradient(90deg,rgba(226,233,243,.9) 1px,transparent 1px);
    background-size:52px 52px;
    -webkit-mask-image:radial-gradient(circle at 18% 8%,#000 0%,transparent 72%);
    mask-image:radial-gradient(circle at 18% 8%,#000 0%,transparent 72%);
  }
  .page-head::after{
    content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(26,107,224,.10),transparent 68%);
    pointer-events:none;
  }
  .page-head .container{position:relative;z-index:1;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;}
  .breadcrumb a{color:var(--brand);}
  .breadcrumb a:hover{color:var(--brand-dark);text-decoration:underline;}
  .breadcrumb .sep{color:#c7d4e4;}
  .page-title{
    font-size:clamp(28px,3.6vw,42px);
    line-height:1.24;
    font-weight:700;
    color:var(--ink);
    letter-spacing:-.015em;
    margin:14px 0 16px;
    max-width:820px;
  }
  .page-sub{font-size:17px;line-height:1.8;color:var(--text);max-width:640px;margin:0 0 28px;}
  .badge-row{display:flex;flex-wrap:wrap;gap:10px;}
  .badge{
    display:inline-flex;align-items:center;gap:7px;
    padding:7px 14px;border-radius:999px;
    font-size:13px;font-weight:600;
    background:var(--brand-light);color:var(--brand);
    border:1px solid rgba(26,107,224,.14);
  }
  .badge svg{flex:0 0 auto;}
  .badge-accent{background:var(--accent-light);color:#c9541c;border-color:rgba(255,122,69,.22);}
  .badge-outline{background:#fff;color:var(--text);border-color:var(--line);}

  /* ---------- 档位阶梯 ---------- */
  .tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
  .tier{
    position:relative;
    display:flex;flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:30px 26px;
    box-shadow:var(--shadow-card);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .tier:nth-child(1){min-height:352px;}
  .tier:nth-child(2){min-height:388px;}
  .tier:nth-child(3){min-height:424px;}
  .tier:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#cfe0f8;}
  .tier-num{
    font-size:40px;line-height:1;font-weight:700;color:#DCE7F7;letter-spacing:.02em;margin-bottom:16px;
  }
  .tier-name{font-size:20px;font-weight:700;color:var(--ink);margin:0 0 8px;}
  .tier-desc{font-size:14px;color:var(--muted);margin:0 0 20px;}
  .tier-list{list-style:none;margin:0 0 24px;padding:0;display:flex;flex-direction:column;gap:12px;}
  .tier-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--text);}
  .tick{
    flex:0 0 18px;width:18px;height:18px;margin-top:4px;border-radius:999px;
    background:var(--brand-light);color:var(--brand);display:grid;place-items:center;
  }
  .tier-foot{margin-top:auto;}
  .tier.featured{
    background:linear-gradient(170deg,#1A6BE0 0%,#1454B8 100%);
    border-color:transparent;
    box-shadow:0 26px 52px -24px rgba(20,84,184,.78);
  }
  .tier.featured .tier-num{color:rgba(255,255,255,.34);}
  .tier.featured .tier-name{color:#fff;}
  .tier.featured .tier-desc{color:rgba(255,255,255,.78);}
  .tier.featured .tier-list li{color:rgba(255,255,255,.92);}
  .tier.featured .tick{background:rgba(255,255,255,.18);color:#fff;}
  .tier.featured .link-arrow{color:#fff;}
  .tier.featured .link-arrow:hover{color:#EAF2FE;}
  .tier-flag{
    position:absolute;top:22px;right:22px;
    padding:5px 12px;border-radius:999px;
    font-size:12px;font-weight:700;letter-spacing:.04em;
    background:var(--accent);color:#fff;
    box-shadow:0 10px 20px -12px rgba(255,122,69,.95);
  }

  /* ---------- 规则说明列表 ---------- */
  .rule-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
  .rule-item{
    display:grid;grid-template-columns:72px 1fr;gap:20px;align-items:start;
    padding:24px 16px;border-bottom:1px solid var(--line);
    border-radius:12px;
    transition:background-color .22s ease,transform .22s ease;
  }
  .rule-item:hover{background:#fff;transform:translateX(4px);}
  .rule-no{font-size:15px;font-weight:700;color:var(--brand);letter-spacing:.06em;}
  .rule-text{margin:0;font-size:16px;line-height:1.8;color:var(--text);}
  .rule-text strong{color:var(--ink);font-weight:600;}

  /* ---------- 图文区块 ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
  .figure{
    position:relative;border-radius:var(--r-img);overflow:hidden;
    border:1px solid var(--line);background:#E9F0FA;
    box-shadow:var(--shadow-card);
    aspect-ratio:16/10;
  }
  .figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
  .figure:hover img{transform:scale(1.03);}
  .figure-tag{
    position:absolute;left:16px;bottom:16px;
    padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;
    background:rgba(255,255,255,.94);color:var(--brand);
    box-shadow:0 10px 22px -14px rgba(15,43,86,.6);
  }
  .check-list{list-style:none;margin:22px 0 28px;padding:0;display:flex;flex-direction:column;gap:14px;}
  .check-list li{display:flex;gap:12px;font-size:16px;line-height:1.75;color:var(--text);}

  /* ---------- FAQ ---------- */
  .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start;}
  .faq{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    transition:border-color .22s ease,box-shadow .22s ease;
  }
  .faq:hover{border-color:#cfe0f8;box-shadow:var(--shadow-card);}
  .faq summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    min-height:48px;padding:16px 20px;
    font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary svg{flex:0 0 auto;color:var(--muted);transition:transform .25s ease,color .25s ease;}
  .faq[open] summary{background:var(--brand-light);box-shadow:inset 3px 0 0 var(--brand);color:var(--brand-dark);}
  .faq[open] summary svg{transform:rotate(180deg);color:var(--brand);}
  .faq-body{
    padding:16px 20px 20px;font-size:15px;line-height:1.85;color:var(--text);
    background:var(--brand-light);box-shadow:inset 3px 0 0 var(--brand);
  }
  .faq-body p{margin:0;}

  /* ---------- 表单 ---------- */
  .contact-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:48px;align-items:start;}
  .contact-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);}
  .contact-item:last-of-type{border-bottom:0;}
  .contact-icon{
    flex:0 0 40px;width:40px;height:40px;border-radius:12px;
    background:var(--brand-light);color:var(--brand);display:grid;place-items:center;
  }
  .contact-item h4{margin:0 0 4px;font-size:15px;color:var(--ink);font-weight:600;}
  .contact-item p{margin:0;font-size:14px;color:var(--text);line-height:1.7;}
  .form-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:30px;
    box-shadow:var(--shadow-card);
  }
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
  .field input,.field select,.field textarea{
    width:100%;min-height:44px;
    padding:11px 14px;
    font-size:15px;font-family:inherit;color:var(--ink);
    background:#FBFDFF;
    border:1px solid var(--line);
    border-radius:var(--r-btn);
    transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  }
  .field textarea{min-height:118px;resize:vertical;line-height:1.7;}
  .field input:hover,.field select:hover,.field textarea:hover{border-color:#cbd9ea;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;background:#fff;border-color:var(--brand);
    box-shadow:0 0 0 3px rgba(26,107,224,.16);
  }
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
  .check-line{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;}
  .check-line input{width:16px;height:16px;min-height:0;flex:0 0 16px;margin-top:4px;accent-color:var(--brand);}
  .check-line span{font-size:13px;color:var(--text);line-height:1.7;}
  .form-hint{font-size:13px;color:var(--muted);margin:14px 0 0;}
  .form-submit{width:100%;}

  /* ---------- 页脚 ---------- */
  .footer{background:var(--surface);border-top:1px solid var(--line);padding-top:56px;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;margin-bottom:14px;}
  .footer h4{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 14px;}
  .footer p{margin:0;font-size:14px;line-height:1.85;color:var(--text);}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:var(--text);}
  .footer-links a:hover{color:var(--brand);transform:translateX(2px);}
  .footer-bottom{
    margin-top:44px;border-top:1px solid var(--line);
    padding:20px 0 26px;
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--muted);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1280px){
    .container{max-width:1120px;}
  }
  @media (max-width:1024px){
    .dock-nav{display:none;}
    .dock-burger{display:grid;}
    .tier-grid{grid-template-columns:1fr;}
    .tier:nth-child(1),.tier:nth-child(2),.tier:nth-child(3){min-height:0;}
    .tier{min-height:0 !important;}
    .split{grid-template-columns:1fr;gap:32px;}
    .contact-grid{grid-template-columns:1fr;gap:32px;}
    .faq-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .section{padding:64px 0;}
  }
  @media (max-width:640px){
    body.site-body{padding-top:94px;}
    .container{padding-left:20px;padding-right:20px;}
    .dock{height:60px;padding:0 10px 0 14px;top:12px;left:12px;right:12px;}
    .dock-logo{font-size:13px;gap:8px;}
    .dock-logo-mark{width:30px;height:30px;flex:0 0 30px;border-radius:10px;font-size:14px;}
    .dock-right .btn.btn-primary{display:none;}
    .dock-icon-btn{width:36px;height:36px;}
    .page-head{padding:36px 0 40px;}
    .page-sub{font-size:16px;}
    .section{padding:56px 0;}
    .section-head{margin-bottom:28px;}
    .tier{padding:24px 20px;}
    .rule-item{grid-template-columns:1fr;gap:8px;padding:20px 12px;}
    .form-card{padding:22px 18px;}
    .form-row{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }