/* roulang page: index */
:root{
    --brand-600:#1F5AD6;
    --brand-500:#3A76F0;
    --brand-100:#DCE7FB;
    --brand-050:#EEF3FF;
    --accent-500:#FF7A3D;
    --ok-500:#12A594;
    --bg:#F5F7FB;
    --card:#FFFFFF;
    --line:#E9EEF7;
    --ink-900:#101A2E;
    --ink-600:#4A5670;
    --ink-400:#8A94AB;
    --r-lg:24px;
    --r-md:20px;
    --r-sm:12px;
    --shadow-card:0 1px 2px rgba(16,26,46,.04),0 14px 36px -18px rgba(16,26,46,.18);
    --shadow-hover:0 20px 44px -18px rgba(16,26,46,.26);
    --ease:200ms ease-out;
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  html body.site-body{
    margin:0;
    background:var(--bg);
    color:var(--ink-600);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),opacity var(--ease);}
  a:hover{color:var(--brand-500);}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-0.02em;line-height:1.3;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  figure{margin:0;}
  table{border-collapse:collapse;}
  :focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.shell{padding-left:32px;padding-right:32px;}}

  /* ===== 顶部导航 ===== */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.95);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease-out;
  }
  .site-header.is-scrolled{box-shadow:0 6px 24px -16px rgba(16,26,46,.35);}
  .header-inner{display:flex;align-items:center;gap:20px;height:64px;}
  @media (min-width:768px){.header-inner{height:72px;}}

  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;flex:0 0 auto;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-600);
    box-shadow:0 8px 18px -10px rgba(31,90,214,.7);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.1;}
  .brand-text b{font-size:15px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
  .brand-text b i{font-style:normal;color:var(--brand-600);}
  .brand-text em{font-style:normal;font-size:11px;color:var(--ink-400);letter-spacing:.12em;margin-top:2px;}

  .nav-desktop{display:none;align-items:center;gap:30px;margin-left:10px;}
  @media (min-width:1024px){.nav-desktop{display:flex;}}
  .nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-600);padding:6px 0;}
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
    background:var(--brand-600);transition:left var(--ease),right var(--ease);
  }
  .nav-link:hover{color:var(--ink-900);}
  .nav-link:hover::after{left:0;right:0;}
  .nav-link.is-active{color:var(--brand-600);font-weight:600;}
  .nav-link.is-active::after{left:0;right:0;}

  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .searchbox{display:none;position:relative;}
  @media (min-width:1024px){.searchbox{display:block;}}
  .searchbox input{
    width:224px;height:40px;border-radius:999px;border:1px solid transparent;
    background:#F4F7FC;padding:0 16px 0 40px;font-size:14px;color:var(--ink-900);
    transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
  }
  .searchbox input::placeholder{color:var(--ink-400);}
  .searchbox input:focus{background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(31,90,214,.12);outline:none;}
  .searchbox svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--ink-400);}

  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    background:#fff;color:var(--ink-900);
  }
  @media (min-width:1024px){.nav-toggle{display:none;}}

  /* ===== 按钮 ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:transform var(--ease),background-color var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px -10px rgba(31,90,214,.55);}
  .btn-primary:hover{background:#1A4FBD;color:#fff;transform:translateY(-1px);box-shadow:0 16px 30px -12px rgba(31,90,214,.6);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-secondary{background:#fff;border:1px solid #D8E0F0;color:var(--ink-900);}
  .btn-secondary:hover{border-color:rgba(31,90,214,.4);background:#F5F8FF;color:var(--brand-600);}
  .btn-sm{height:40px;padding:0 20px;font-size:14px;}
  .btn-block{width:100%;}
  .btn-ghost{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-600);font-size:14px;font-weight:600;
  }
  .btn-ghost span{transition:transform var(--ease);}
  .btn-ghost:hover{color:var(--brand-500);}
  .btn-ghost:hover span{transform:translateX(4px);}

  /* ===== 移动端抽屉 ===== */
  .mobile-drawer{
    position:fixed;inset:0;z-index:60;background:#fff;
    display:flex;flex-direction:column;
    transform:translateX(100%);transition:transform .28s ease-out;
    visibility:hidden;
  }
  .mobile-drawer.is-open{transform:translateX(0);visibility:visible;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:64px;flex:0 0 auto;}
  .drawer-title{font-size:15px;font-weight:700;color:var(--ink-900);}
  .drawer-close{
    width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    font-size:22px;line-height:1;color:var(--ink-900);background:#fff;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
  .drawer-nav a{
    padding:15px 4px;font-size:17px;font-weight:600;color:var(--ink-900);
    border-bottom:1px solid var(--line);
  }
  .drawer-nav a.is-active{color:var(--brand-600);}
  .drawer-foot{margin-top:auto;padding:20px 0 28px;}

  /* ===== 倒计时条 ===== */
  .countbar{background:var(--brand-050);border-bottom:1px solid var(--brand-100);}
  .countbar-inner{
    display:flex;align-items:center;gap:14px;flex-wrap:wrap;
    padding-top:9px;padding-bottom:9px;min-height:52px;
  }
  .tag-limit{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
    background:var(--accent-500);color:#fff;font-size:12px;font-weight:700;letter-spacing:.04em;
    flex:0 0 auto;
  }
  .countbar-phrase{font-size:14px;color:var(--ink-600);}
  .countdown{display:flex;align-items:center;gap:6px;margin-left:auto;}
  .cd-cell{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    min-width:52px;padding:2px 10px;border-radius:10px;
    background:#fff;border:1px solid var(--brand-100);
  }
  .cd-cell span{font-size:20px;font-weight:700;color:var(--ink-900);line-height:1.3;font-variant-numeric:tabular-nums;}
  .cd-cell small{font-size:11px;color:var(--ink-400);line-height:1.4;}
  .countbar-link{font-size:13px;font-weight:600;color:var(--brand-600);flex:0 0 auto;}
  @media (max-width:640px){
    .countbar-phrase{display:none;}
    .cd-cell{min-width:44px;padding:2px 6px;}
    .cd-cell span{font-size:17px;}
    .countbar-link{font-size:12px;}
  }

  /* ===== Hero ===== */
  .hero{position:relative;background:#fff;padding:44px 0 40px;overflow:hidden;}
  @media (min-width:768px){.hero{padding:72px 0 56px;}}
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:.35;pointer-events:none;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(255,255,255,.9) 0%,rgba(255,255,255,.97) 70%,#fff 100%);
    pointer-events:none;
  }
  .hero-grid{position:relative;z-index:1;display:grid;gap:36px;align-items:center;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1fr 1fr;gap:56px;}}
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:32px;padding:0 14px;border-radius:999px;
    background:var(--brand-050);border:1px solid var(--brand-100);
    color:var(--brand-600);font-size:13px;font-weight:600;margin-bottom:20px;
  }
  .hero h1{font-size:34px;line-height:1.25;letter-spacing:-.02em;}
  @media (min-width:768px){.hero h1{font-size:44px;line-height:1.2;}}
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-600);max-width:560px;}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;}
  .hero-points li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600);}
  .hero-points li::before{
    content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-600);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-media{
    position:relative;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);
    box-shadow:0 0 0 8px rgba(31,90,214,.05),var(--shadow-card);
    aspect-ratio:4/3;background:var(--brand-050);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
  .hero-media:hover img{transform:scale(1.02);}

  /* ===== 板块 ===== */
  .section{padding:56px 0;}
  @media (min-width:768px){.section{padding:88px 0;}}
  .section-head{margin-bottom:32px;}
  @media (min-width:768px){.section-head{margin-bottom:48px;}}
  .section-head h2{font-size:26px;line-height:1.35;}
  @media (min-width:768px){.section-head h2{font-size:32px;line-height:1.35;}}
  .section-sub{margin-top:12px;font-size:16px;color:var(--ink-600);}
  .section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
  .text-center{text-align:center;}
  .text-center .section-sub{margin-left:auto;margin-right:auto;max-width:640px;}

  /* ===== 卖点卡 ===== */
  .feature-grid{display:grid;grid-template-columns:1fr;gap:18px;}
  @media (min-width:1024px){.feature-grid{grid-template-columns:repeat(12,1fr);gap:24px;}}
  .feature-lg{
    position:relative;overflow:hidden;
    background:#F7F9FD;border:1px solid var(--line);border-radius:var(--r-lg);
    padding:28px;
  }
  @media (min-width:768px){.feature-lg{padding:32px;}}
  .feature-lg .num{
    position:absolute;right:20px;top:6px;
    font-size:70px;font-weight:800;line-height:1;
    color:rgba(31,90,214,.10);letter-spacing:-.05em;font-variant-numeric:tabular-nums;
    pointer-events:none;
  }
  .feature-sm{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    padding:24px;box-shadow:var(--shadow-card);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .feature-sm:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.28);}
  @media (min-width:1024px){
    .feature-lg{grid-column:span 6;}
    .feature-sm{grid-column:span 3;}
    .feature-wide{grid-column:span 6;}
  }
  .icon-box{
    width:52px;height:52px;border-radius:16px;margin-bottom:18px;
    display:inline-flex;align-items:center;justify-content:center;
    background:#fff;border:1px solid var(--line);color:var(--brand-600);
  }
  .feature-lg .icon-box{background:var(--brand-100);border-color:transparent;}
  .feature-lg h3,.feature-sm h3{font-size:19px;line-height:1.5;}
  .feature-lg p,.feature-sm p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-600);}
  .feature-lg .btn-ghost,.feature-wide .btn-ghost{margin-top:20px;}

  .feature-wide{
    display:grid;grid-template-columns:1fr;overflow:hidden;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--shadow-card);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .feature-wide:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.28);}
  @media (min-width:768px){.feature-wide{grid-template-columns:1fr 1fr;}}
  .feature-wide-media{overflow:hidden;background:var(--brand-050);min-height:220px;}
  .feature-wide-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
  .feature-wide:hover .feature-wide-media img{transform:scale(1.04);}
  .feature-wide-body{padding:28px;display:flex;flex-direction:column;justify-content:center;}
  .feature-wide-body h3{margin-top:14px;font-size:20px;}
  .feature-wide-body p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-600);}

  /* ===== 徽章 ===== */
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:600;
    align-self:flex-start;flex:0 0 auto;
  }
  .badge-ok{background:rgba(18,165,148,.1);color:var(--ok-500);}
  .badge-accent{background:rgba(255,122,61,.12);color:#D9581F;}
  .badge-light{background:#fff;border:1px solid var(--brand-100);}

  /* ===== 亮点图墙 ===== */
  .wall{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  @media (min-width:1024px){.wall{grid-template-columns:repeat(12,1fr);gap:20px;}}
  .wall-item{
    position:relative;overflow:hidden;border-radius:var(--r-md);
    height:160px;background:var(--brand-050);
    border:1px solid var(--line);
  }
  @media (min-width:1024px){
    .wall-item{height:200px;}
    .span-3{grid-column:span 3;}
    .span-4{grid-column:span 4;}
    .span-5{grid-column:span 5;}
    .tall-a{height:190px;}
    .tall-b{height:250px;}
    .tall-c{height:320px;}
  }
  .wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
  .wall-item:hover img{transform:scale(1.04);}
  .wall-cap{
    position:absolute;left:0;right:0;bottom:0;padding:16px;
    background:linear-gradient(180deg,rgba(16,26,46,0) 0%,rgba(16,26,46,.78) 100%);
    color:#fff;font-size:15px;font-weight:600;
    opacity:0;transform:translateY(6px);
    transition:opacity .25s ease-out,transform .25s ease-out;
  }
  .wall-item:hover .wall-cap,.wall-item:focus-within .wall-cap{opacity:1;transform:translateY(0);}

  /* ===== CTA / 表单 ===== */
  .cta-band{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    padding:36px 22px;
    background-color:#EEF3FF;
    background-image:url('/assets/images/backpic/back-3.png');
    background-size:cover;background-position:center;
  }
  @media (min-width:768px){.cta-band{padding:56px 48px;}}
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-color:rgba(238,243,255,.94);
    background-image:linear-gradient(rgba(31,90,214,.06) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(31,90,214,.06) 1px,transparent 1px);
    background-size:34px 34px;
    pointer-events:none;
  }
  .cta-grid{position:relative;z-index:1;display:grid;gap:28px;align-items:center;}
  @media (min-width:1024px){.cta-grid{grid-template-columns:1fr 420px;gap:48px;}}
  .cta-copy h2{font-size:26px;line-height:1.35;margin-top:16px;}
  @media (min-width:768px){.cta-copy h2{font-size:32px;}}
  .cta-copy p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--ink-600);max-width:520px;}
  .cta-list{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;}
  .cta-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600);}
  .cta-list li::before{
    content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--ok-500);
  }
  .form-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    padding:24px;box-shadow:var(--shadow-card);
  }
  .form-card h3{font-size:18px;margin-bottom:18px;}
  .field{margin-bottom:14px;}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
  .field input,.field select{
    width:100%;height:48px;border-radius:var(--r-sm);
    border:1px solid #DCE3F0;background:#fff;padding:0 14px;
    font-size:15px;color:var(--ink-900);
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .field input::placeholder{color:var(--ink-400);}
  .field input:focus,.field select:focus{border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(31,90,214,.12);outline:none;}
  .code-row{display:flex;gap:10px;}
  .code-row input{flex:1 1 auto;}
  .code-box{
    flex:0 0 96px;height:48px;border-radius:var(--r-sm);
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-050);border:1px dashed var(--brand-100);
    color:var(--brand-600);font-weight:700;letter-spacing:.18em;font-size:16px;
    font-variant-numeric:tabular-nums;
  }
  .form-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--ink-400);}

  /* ===== 资讯卡 ===== */
  .card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
  .card{
    display:flex;flex-direction:column;overflow:hidden;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--shadow-card);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .card:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.28);}
  .card-media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--brand-050);}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
  .card:hover .card-media img{transform:scale(1.04);}
  .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
  .card-title{
    font-size:18px;line-height:1.5;font-weight:600;color:var(--ink-900);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-title a{color:inherit;}
  .card-title a:hover{color:var(--brand-600);}
  .card-desc{
    font-size:14px;line-height:1.75;color:var(--ink-600);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-meta{
    margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;
  }
  .card-more{color:var(--brand-600);font-weight:600;font-size:13px;transition:transform var(--ease);}
  .card:hover .card-more{transform:translateX(2px);}

  .empty-state{
    text-align:center;padding:56px 24px;border:1px dashed #D8E0F0;border-radius:var(--r-md);background:#fff;
  }
  .empty-state svg{margin:0 auto 16px;color:var(--brand-500);}
  .empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:20px;}

  /* ===== FAQ ===== */
  .faq-wrap{max-width:880px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0;font-size:16px;font-weight:600;color:var(--ink-900);text-align:left;
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--brand-600);}
  .faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px;}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--brand-600);border-radius:2px;
    transition:transform var(--ease),opacity var(--ease);
  }
  .faq-icon::before{left:0;right:0;top:10px;height:2px;}
  .faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
  .faq-item.is-open .faq-a{max-height:420px;}
  .faq-a p{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--ink-600);}

  /* ===== 页脚 ===== */
  .site-footer{background:#101A2E;color:#C7D0E2;margin-top:24px;}
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:32px;
    padding:56px 0 40px;
  }
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
  .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-logo-text{display:flex;flex-direction:column;line-height:1.15;}
  .footer-logo-text b{color:#fff;font-size:15px;font-weight:700;}
  .footer-logo-text b i{font-style:normal;color:#7FA6FF;}
  .footer-logo-text em{font-style:normal;font-size:11px;color:#8A94AB;letter-spacing:.12em;margin-top:2px;}
  .footer-desc{font-size:14px;line-height:1.85;color:#C7D0E2;max-width:340px;}
  .footer-meta{margin-top:14px;font-size:13px;color:#8A94AB;}
  .site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
  .footer-links li{margin-bottom:10px;}
  .footer-links a{color:#C7D0E2;font-size:14px;}
  .footer-links a:hover{color:#7FA6FF;text-decoration:underline;}
  .footer-note{font-size:13px;line-height:1.85;color:#8A94AB;margin-bottom:10px;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    padding:20px 0 28px;
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:13px;color:#8A94AB;
  }

/* roulang page: article */
:root{
    --brand-600:#1F5AD6;
    --brand-500:#3A76F0;
    --brand-100:#DCE7FB;
    --brand-050:#EEF3FF;
    --accent-500:#FF7A3D;
    --ok-500:#12A594;
    --bg:#F5F7FB;
    --card:#FFFFFF;
    --line:#E9EEF7;
    --ink-900:#101A2E;
    --ink-600:#4A5670;
    --ink-400:#8A94AB;
    --radius-xl:24px;
    --radius-lg:20px;
    --radius-md:16px;
    --radius-sm:12px;
    --shadow-card:0 1px 2px rgba(16,26,46,.04), 0 14px 36px -18px rgba(16,26,46,.18);
    --shadow-card-hover:0 20px 44px -18px rgba(16,26,46,.26);
    --ease:200ms ease-out;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
  a:hover{color:var(--brand-500)}
  button,input,select,textarea{font:inherit;color:inherit}
  button{cursor:pointer}
  h1,h2,h3,h4{margin:0;letter-spacing:-.02em;font-weight:700}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  time,.num{font-variant-numeric:tabular-nums}
  a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.shell{padding:0 32px}}

  .skip-link{position:absolute;left:-9999px;top:0;background:#fff;color:var(--brand-600);padding:10px 16px;border-radius:0 0 12px 0;z-index:99}
  .skip-link:focus{left:0}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.95);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 6px 24px -16px rgba(16,26,46,.35)}
  .header-inner{display:flex;align-items:center;gap:20px;height:64px}
  @media (min-width:768px){.header-inner{height:72px;gap:26px}}

  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900)}
  .brand:hover{color:var(--ink-900)}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;flex:0 0 auto;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
    box-shadow:0 8px 18px -10px rgba(31,90,214,.75);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.16}
  .brand-text b{font-size:15px;font-weight:600;letter-spacing:-.01em}
  .brand-text b i{font-style:normal;color:var(--brand-600)}
  .brand-text em{font-style:normal;font-size:11.5px;color:var(--ink-400);letter-spacing:.08em}

  .nav-desktop{display:none;align-items:center;gap:30px;margin-left:10px}
  @media (min-width:1024px){.nav-desktop{display:flex}}
  .nav-link{position:relative;display:inline-block;padding:6px 0;font-size:14.5px;font-weight:500;color:var(--ink-600)}
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
    background:var(--brand-600);transition:left var(--ease),right var(--ease);
  }
  .nav-link:hover{color:var(--ink-900)}
  .nav-link:hover::after{left:0;right:0}
  .nav-link.is-active{color:var(--brand-600);font-weight:600}
  .nav-link.is-active::after{left:0;right:0}

  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
  .searchbox{
    display:none;align-items:center;gap:8px;width:224px;height:40px;padding:0 14px;
    border-radius:999px;background:#F4F7FC;border:1px solid transparent;color:var(--ink-400);
    transition:background-color var(--ease),border-color var(--ease),box-shadow var(--ease);
  }
  @media (min-width:1024px){.searchbox{display:flex}}
  .searchbox:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-100)}
  .searchbox input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:13.5px;color:var(--ink-900)}
  .searchbox input::placeholder{color:var(--ink-400)}
  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    background:#fff;color:var(--ink-900);transition:var(--ease);
  }
  .nav-toggle:hover{border-color:rgba(31,90,214,.35);color:var(--brand-600)}
  @media (min-width:1024px){.nav-toggle{display:none}}

  .nav-drawer{
    position:fixed;left:0;right:0;top:64px;bottom:0;z-index:45;
    background:#fff;padding:20px 20px 32px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  }
  @media (min-width:768px){.nav-drawer{top:72px;padding:24px 32px 36px}}
  @media (min-width:1024px){.nav-drawer{display:none}}
  .nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .drawer-nav{display:flex;flex-direction:column}
  .drawer-link{padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;color:var(--ink-900)}
  .drawer-link.is-active{color:var(--brand-600)}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:46px;margin-top:20px;padding:0 16px;
    border-radius:999px;background:#F4F7FC;color:var(--ink-400);border:1px solid transparent;
  }
  .drawer-search:focus-within{background:#fff;border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-100)}
  .drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
  .drawer-cta{margin-top:20px}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:transform var(--ease),background-color var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
  }
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px -10px rgba(31,90,214,.55)}
  .btn-primary:hover{background:#1A4FBD;color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px -12px rgba(31,90,214,.68)}
  .btn-primary:active{transform:translateY(0) scale(.99)}
  .btn-secondary{background:#fff;color:var(--ink-900);border-color:#D8E0F0}
  .btn-secondary:hover{background:#F5F8FF;color:var(--brand-600);border-color:rgba(31,90,214,.4);transform:translateY(-1px)}
  .btn-secondary:active{transform:translateY(0) scale(.99)}
  .btn-sm{height:40px;padding:0 20px;font-size:14px}
  .btn-block{width:100%}

  /* ---------- breadcrumb ---------- */
  .crumb-wrap{padding:20px 0 0}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400)}
  .breadcrumb a{color:var(--ink-400)}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .sep{color:#C3CBDC}
  .breadcrumb .current{color:var(--ink-400);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* ---------- article head ---------- */
  .article-head{max-width:820px;padding:26px 0 0}
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
    background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.02em;
  }
  .badge-ok{background:rgba(18,165,148,.12);color:var(--ok-500)}
  .article-head h1{margin-top:16px;font-size:29px;line-height:1.36;font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
  @media (min-width:768px){.article-head h1{font-size:40px;line-height:1.26}}
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13.5px;color:var(--ink-400)}
  .meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3CBDC}

  /* ---------- article body ---------- */
  .article-layout{display:flex;justify-content:center;padding:34px 0 0}
  .article-main{width:100%;max-width:760px}
  .article-body{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-xl);
    padding:26px 20px;font-size:16.5px;line-height:1.8;color:var(--ink-600);
    box-shadow:var(--shadow-card);
  }
  @media (min-width:768px){.article-body{padding:44px 48px;font-size:17px;line-height:1.82}}
  .article-body > * + *{margin-top:1.25em}
  .article-body h2{
    position:relative;margin-top:2em;margin-bottom:.2em;padding-left:16px;
    font-size:22px;line-height:1.4;font-weight:700;color:var(--ink-900);
  }
  @media (min-width:768px){.article-body h2{font-size:25px}}
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--brand-600);
  }
  .article-body h3{margin-top:1.6em;margin-bottom:.2em;font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900)}
  @media (min-width:768px){.article-body h3{font-size:20px}}
  .article-body p{color:var(--ink-600)}
  .article-body strong{color:var(--ink-900);font-weight:600}
  .article-body a{color:var(--brand-600);border-bottom:1px solid rgba(31,90,214,.35)}
  .article-body a:hover{color:var(--brand-500);border-bottom-color:var(--brand-500)}
  .article-body img{border-radius:16px;margin:1.6em auto;box-shadow:0 16px 38px -22px rgba(16,26,46,.45)}
  .article-body figure{margin:1.6em 0}
  .article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--ink-400)}
  .article-body blockquote{
    margin:1.6em 0;padding:18px 22px;background:#F7F9FD;
    border-left:3px solid var(--brand-600);border-radius:0 14px 14px 0;
  }
  .article-body blockquote p{color:var(--ink-600)}
  .article-body ul{margin:1.25em 0}
  .article-body ul > li{position:relative;margin:.55em 0;padding-left:20px}
  .article-body ul > li::before{
    content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--brand-600);
  }
  .article-body ol{margin:1.25em 0;counter-reset:item}
  .article-body ol > li{position:relative;margin:.55em 0;padding-left:28px;counter-increment:item}
  .article-body ol > li::before{
    content:counter(item);position:absolute;left:0;top:.18em;
    width:19px;height:19px;border-radius:6px;background:var(--brand-050);color:var(--brand-600);
    font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  }
  .article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border:1px solid var(--line)}
  .article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
  .article-body th{background:#F4F7FC;color:var(--ink-900);font-weight:600}
  .article-body tr:last-child td{border-bottom:0}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

  .empty-state{
    display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;
    padding:48px 12px;color:var(--ink-400);
  }
  .empty-icon{
    width:56px;height:56px;border-radius:18px;background:var(--brand-050);
    display:flex;align-items:center;justify-content:center;color:var(--brand-600);
  }
  .empty-title{font-size:18px;font-weight:600;color:var(--ink-900)}
  .empty-desc{font-size:14px;color:var(--ink-600);max-width:420px;line-height:1.8}

  /* ---------- article foot ---------- */
  .article-foot{
    display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
    padding:22px 0 0;
  }
  .tag-list{display:flex;flex-wrap:wrap;gap:8px}
  .tag{
    display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
    background:#fff;border:1px solid var(--line);font-size:12.5px;color:var(--ink-600);
  }
  .tag:hover{border-color:rgba(31,90,214,.35);background:var(--brand-050);color:var(--brand-600)}
  .foot-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
  .icon-btn{
    display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--ink-600);font-size:13.5px;
  }
  .icon-btn:hover{border-color:rgba(31,90,214,.35);background:#F5F8FF;color:var(--brand-600)}

  /* ---------- sections ---------- */
  .section{padding:44px 0 0}
  @media (min-width:768px){.section{padding:60px 0 0}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
  .section-title{font-size:21px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
  @media (min-width:768px){.section-title{font-size:26px}}
  .section-sub{margin-top:8px;font-size:14px;color:var(--ink-600)}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);transition:gap var(--ease),color var(--ease)}
  .link-more:hover{color:var(--brand-500);gap:10px}

  /* ---------- post cards ---------- */
  .card-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
  .post-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .post-card:hover{transform:translateY(-1px);box-shadow:var(--shadow-card-hover);border-color:rgba(31,90,214,.28)}
  .post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-050)}
  .post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease-out}
  .post-card:hover .post-thumb img{transform:scale(1.04)}
  .post-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:18px 20px 20px}
  .post-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);letter-spacing:-.01em}
  .post-title a{color:inherit}
  .post-title a:hover{color:var(--brand-600)}
  .post-desc{
    font-size:14px;line-height:1.72;color:var(--ink-600);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:13px;color:var(--ink-400)}
  .post-more{display:inline-flex;align-items:center;gap:4px;font-size:13.5px;font-weight:600;color:var(--brand-600)}
  .post-more:hover{color:var(--brand-500)}
  .post-more span{transition:transform var(--ease)}
  .post-more:hover span{transform:translateX(2px)}

  /* ---------- pager ---------- */
  .pager-grid{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:768px){.pager-grid{grid-template-columns:1fr 1fr}}
  .pager-item{
    display:flex;flex-direction:column;gap:8px;padding:20px 22px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
    box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .pager-item:hover{transform:translateY(-1px);box-shadow:var(--shadow-card-hover);border-color:rgba(31,90,214,.28)}
  .pager-label{font-size:12.5px;color:var(--ink-400)}
  .pager-title{font-size:15.5px;line-height:1.6;font-weight:600;color:var(--ink-900)}
  .pager-item:hover .pager-title{color:var(--brand-600)}
  .pager-item.is-next{text-align:right;align-items:flex-end}

  /* ---------- footer ---------- */
  .site-footer{background:#101A2E;color:#C7D0E2;margin-top:64px;padding:56px 0 0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
  .site-footer h4{margin:0 0 14px;font-size:14px;color:#fff;font-weight:600;letter-spacing:.02em}
  .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-logo-text{display:flex;flex-direction:column;line-height:1.16}
  .footer-logo-text b{font-size:15px;font-weight:600;color:#fff}
  .footer-logo-text b i{font-style:normal;color:#7EA7FF}
  .footer-logo-text em{font-style:normal;font-size:11.5px;color:#8A94AB;letter-spacing:.08em}
  .footer-desc{font-size:13.5px;line-height:1.85;color:#C7D0E2;max-width:340px}
  .footer-meta{margin-top:10px;font-size:13px;color:#8A94AB}
  .footer-links li + li{margin-top:10px}
  .footer-links a{font-size:13.5px;color:#C7D0E2}
  .footer-links a:hover{color:#7EA7FF;text-decoration:underline}
  .footer-note{font-size:13px;line-height:1.85;color:#98A3BC}
  .footer-note + .footer-note{margin-top:10px}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    margin-top:40px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);
    font-size:12.5px;color:#8A94AB;
  }

/* roulang page: category1 */
:root{
  --brand-600:#1F5AD6;
  --brand-500:#3A76F0;
  --brand-100:#DCE7FB;
  --brand-050:#EEF3FF;
  --accent-500:#FF7A3D;
  --ok-500:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E9EEF7;
  --ink-900:#101A2E;
  --ink-600:#4A5670;
  --ink-400:#8A94AB;
  --radius-xl:24px;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 1px 2px rgba(16,26,46,.04), 0 14px 36px -18px rgba(16,26,46,.18);
  --shadow-hover:0 20px 44px -18px rgba(16,26,46,.26);
  --shadow-btn:0 10px 24px -10px rgba(31,90,214,.55);
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:28px;
  background:var(--bg);color:var(--ink-600);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand-500)}
button{font:inherit;color:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:var(--ink-900)}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.tnum{font-variant-numeric:tabular-nums}
.shell{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.shell{padding:0 32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -16px rgba(16,26,46,.35)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
@media(min-width:768px){.header-inner{height:72px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink-900)}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  box-shadow:0 8px 18px -10px rgba(31,90,214,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:-.01em;color:var(--ink-900)}
.brand-text b i{font-style:normal;color:var(--brand-600)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.1em;color:var(--ink-400)}
.nav-desktop{display:none}
@media(min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:32px;margin-left:12px}
}
.nav-link{position:relative;padding:6px 0;font-size:15px;color:var(--ink-600);white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--brand-600);transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{left:0;right:0}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.searchbox{
  display:none;align-items:center;gap:8px;width:224px;height:40px;padding:0 14px;
  border-radius:999px;background:#F4F7FC;border:1px solid transparent;color:var(--ink-400);
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
@media(min-width:1024px){.searchbox{display:flex}}
.searchbox input{width:100%;border:0;background:transparent;outline:none;font-size:14px}
.searchbox input::placeholder{color:var(--ink-400)}
.searchbox:focus-within{background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(31,90,214,.12)}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink-900);
}
.nav-toggle:hover{border-color:rgba(31,90,214,.4);color:var(--brand-600)}
@media(min-width:1024px){.nav-toggle{display:none}}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:60;display:none;background:rgba(16,26,46,.4);
}
.mobile-drawer.is-open{display:block}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(320px,86vw);height:100%;
  background:#fff;padding:24px 20px;display:flex;flex-direction:column;gap:8px;
  box-shadow:-20px 0 40px -24px rgba(16,26,46,.4);
}
.drawer-panel a.d-link{padding:14px 6px;border-bottom:1px solid var(--line);color:var(--ink-900);font-size:15px}
.drawer-panel a.d-link.is-active{color:var(--brand-600);font-weight:600}
.drawer-panel .btn{margin-top:20px;width:100%;justify-content:center}
body.no-scroll{overflow:hidden}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{background:#1A4FBE;color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px -10px rgba(31,90,214,.6)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:#fff;color:var(--ink-900);border-color:#D8E0F0}
.btn-ghost:hover{background:#F5F8FF;border-color:rgba(31,90,214,.4);color:var(--brand-600)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-link{
  color:var(--brand-600);border-radius:4px;font-weight:600;font-size:14px;
  background-image:linear-gradient(var(--brand-600),var(--brand-600));
  background-repeat:no-repeat;background-size:0 1px;background-position:center bottom;
  transition:background-size .25s var(--ease),color .2s var(--ease);
}
.btn-link:hover{background-size:100% 1px;color:var(--brand-500)}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:#fff;border:1px solid var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;
}
.badge-ok{background:rgba(18,165,148,.1);border-color:rgba(18,165,148,.24);color:#0E8577}
.badge-accent{background:rgba(255,122,61,.12);border-color:rgba(255,122,61,.28);color:#D35A1F}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(255,255,255,.93),rgba(245,247,251,.98)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.page-hero-inner{padding:36px 0 44px}
@media(min-width:768px){.page-hero-inner{padding:48px 0 56px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;line-height:22px;color:var(--ink-400)}
.crumb a{color:var(--ink-600)}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:#C3CBDB}
.crumb .current{color:var(--ink-400)}
.page-hero h1{margin-top:16px;font-size:34px;line-height:44px;font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
@media(min-width:768px){.page-hero h1{font-size:44px;line-height:56px}}
.page-hero .lead{margin-top:14px;max-width:760px;font-size:16px;line-height:28px;color:var(--ink-600)}
.quick-grid{display:grid;gap:16px;margin-top:28px;grid-template-columns:1fr}
@media(min-width:640px){.quick-grid{grid-template-columns:repeat(3,1fr)}}
.quick-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:20px 22px;box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.quick-card:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.28)}
.quick-card .q-num{font-size:28px;font-weight:700;color:var(--brand-600);line-height:1.1}
.quick-card h3{margin-top:8px;font-size:16px;font-weight:600;color:var(--ink-900)}
.quick-card p{margin-top:6px;font-size:14px;line-height:24px;color:var(--ink-600)}

/* ---------- 主体 8/4 ---------- */
.section{padding:48px 0}
@media(min-width:768px){.section{padding:64px 0}}
.layout{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.layout{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:26px;line-height:36px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
@media(min-width:768px){.section-head h2{font-size:32px;line-height:44px}}
.section-head p{margin-top:8px;font-size:15px;line-height:26px;color:var(--ink-600)}

.entry-stream{display:grid;gap:20px}
.entry{
  display:grid;gap:20px;grid-template-columns:minmax(0,1fr);
  padding:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.entry:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.28)}
@media(min-width:768px){
  .entry{grid-template-columns:minmax(0,1fr) 232px;align-items:center;gap:28px;padding:28px}
  .entry.is-flip{grid-template-columns:232px minmax(0,1fr)}
}
.entry-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.entry h3{margin-top:10px;font-size:18px;line-height:28px;font-weight:600;color:var(--ink-900)}
@media(min-width:768px){.entry h3{font-size:20px;line-height:30px}}
.entry p{margin-top:10px;font-size:15px;line-height:26px;color:var(--ink-600)}
.entry-thumb{
  border-radius:var(--radius);overflow:hidden;aspect-ratio:16/10;background:var(--brand-050);
  border:1px solid var(--line);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.entry:hover .entry-thumb img{transform:scale(1.04)}

.checklist{
  margin-top:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-card);
}
.checklist h2{font-size:22px;line-height:32px;font-weight:700;color:var(--ink-900)}
.checklist ul{margin-top:18px;display:grid;gap:12px}
.checklist li{display:flex;gap:12px;font-size:15px;line-height:26px;color:var(--ink-600)}
.checklist li::before{
  content:"";flex-shrink:0;width:8px;height:8px;margin-top:9px;border-radius:3px;background:var(--brand-500);
}

/* 侧栏 */
.side-col{display:grid;gap:20px;align-content:start}
@media(min-width:1024px){.side-col{position:sticky;top:88px}}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-card);
}
.side-card h2,.side-card h3{font-size:17px;line-height:28px;font-weight:700;color:var(--ink-900)}
.side-card .side-desc{margin-top:8px;font-size:14px;line-height:24px;color:var(--ink-400)}
.toc{margin-top:16px;display:grid;gap:2px}
.toc a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--ink-600);transition:background .2s var(--ease),color .2s var(--ease);
}
.toc a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-100);transition:background .2s var(--ease)}
.toc a:hover{background:var(--brand-050);color:var(--brand-600)}
.toc a:hover::before{background:var(--brand-600)}

.faq-item{border-bottom:1px solid var(--line);padding:14px 0}
.faq-item:last-child{border-bottom:0;padding-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  background:none;border:0;padding:0;text-align:left;font-size:15px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-600)}
.faq-q .fx{
  flex-shrink:0;width:18px;height:18px;margin-top:4px;color:var(--brand-600);
  transition:transform .2s var(--ease);
}
.faq-item.is-open .faq-q .fx{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-item.is-open .faq-a{max-height:240px}
.faq-a p{padding-top:10px;font-size:14px;line-height:24px;color:var(--ink-600)}

.side-cta{
  background:var(--brand-050);border:1px solid var(--brand-100);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-card);
}
.side-cta h3{font-size:17px;font-weight:700;color:var(--ink-900)}
.side-cta p{margin-top:8px;font-size:14px;line-height:24px;color:var(--ink-600)}
.side-cta .btn{margin-top:16px;width:100%;justify-content:center}
.side-cta .note{margin-top:10px;font-size:12px;line-height:20px;color:var(--ink-400)}

/* 底部 CTA 条 */
.cta-bar{
  border-radius:var(--radius-xl);border:1px solid var(--brand-100);
  background-color:var(--brand-050);
  background-image:linear-gradient(rgba(31,90,214,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(31,90,214,.05) 1px,transparent 1px);
  background-size:28px 28px;
  padding:32px 28px;display:flex;flex-direction:column;gap:20px;
  box-shadow:var(--shadow-card);
}
@media(min-width:768px){
  .cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px;gap:32px}
}
.cta-bar h2{font-size:24px;line-height:34px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
@media(min-width:768px){.cta-bar h2{font-size:28px;line-height:40px}}
.cta-bar p{margin-top:8px;font-size:15px;line-height:26px;color:var(--ink-600)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#101A2E;color:#C7D0E2;margin-top:16px}
.footer-grid{display:grid;gap:32px;padding:56px 0 36px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-logo{display:flex;align-items:center;gap:10px}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.15}
.footer-logo-text b{font-size:15px;font-weight:700;color:#fff}
.footer-logo-text b i{font-style:normal;color:#7FA8F5}
.footer-logo-text em{font-style:normal;font-size:11px;letter-spacing:.1em;color:#8A94AB}
.footer-desc{margin-top:16px;font-size:14px;line-height:24px;color:#C7D0E2;max-width:340px}
.footer-meta{margin-top:12px;font-size:13px;line-height:22px;color:#8A94AB}
.site-footer h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer-links{margin-top:16px;display:grid;gap:10px}
.footer-links a{font-size:14px;color:#C7D0E2;text-decoration:none}
.footer-links a:hover{color:#8FB4F7;text-decoration:underline}
.footer-note{margin-top:16px;font-size:13px;line-height:22px;color:#8A94AB}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:18px 0 28px;
  display:flex;flex-direction:column;gap:8px;font-size:12px;line-height:22px;color:#8A94AB;
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* roulang page: category2 */
:root{
  --brand-600:#1F5AD6;
  --brand-500:#3A76F0;
  --brand-100:#DCE7FB;
  --brand-050:#EEF3FF;
  --accent-500:#FF7A3D;
  --ok-500:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E9EEF7;
  --ink-900:#101A2E;
  --ink-600:#4A5670;
  --ink-400:#8A94AB;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-card:0 1px 2px rgba(16,26,46,.04), 0 14px 36px -18px rgba(16,26,46,.18);
  --shadow-hover:0 20px 44px -18px rgba(16,26,46,.26);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:28px;
}
h1,h2,h3,h4{color:var(--ink-900);font-weight:700;letter-spacing:-.01em;margin:0}
p{margin:0}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease)}
a:hover{color:#1a4fbe}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.shell{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.shell{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -16px rgba(16,26,46,.35)}
.header-inner{height:64px;display:flex;align-items:center;gap:14px}
@media (min-width:768px){.header-inner{height:72px;gap:20px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  box-shadow:0 8px 18px -10px rgba(31,90,214,.62);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text b{font-size:15px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.brand-text b i{font-style:normal;color:var(--brand-600)}
.brand-text em{font-size:11px;font-style:normal;color:var(--ink-400);letter-spacing:.08em}
.nav-desktop{display:none}
@media (min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:30px;margin-left:14px}
}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-600);padding:24px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:16px;height:2px;border-radius:2px;
  background:var(--brand-600);transition:left var(--ease),right var(--ease);
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{left:0;right:0}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.searchbox{display:none}
@media (min-width:1024px){
  .searchbox{
    display:flex;align-items:center;gap:8px;width:224px;height:40px;padding:0 14px;
    border-radius:999px;background:#F4F7FC;color:var(--ink-400);transition:box-shadow var(--ease),background var(--ease);
  }
  .searchbox:focus-within{background:#fff;color:var(--brand-600);box-shadow:0 0 0 1px var(--brand-500),0 0 0 4px rgba(58,118,240,.16)}
}
.searchbox input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-900);font-family:inherit;
}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink-900);
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:rgba(31,90,214,.4);background:#F5F8FF}
@media (min-width:1024px){.nav-toggle{display:none}}
.mobile-nav{
  position:fixed;inset:0;z-index:60;background:rgba(16,26,46,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.mobile-nav.is-open{opacity:1;visibility:visible}
.mobile-nav-panel{
  position:absolute;right:0;top:0;bottom:0;width:min(320px,86vw);background:#fff;
  padding:24px 20px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(16px);transition:transform 250ms ease-out;
  box-shadow:-20px 0 44px -24px rgba(16,26,46,.45);
}
.mobile-nav.is-open .mobile-nav-panel{transform:none}
.mobile-nav-title{font-size:13px;color:var(--ink-400);padding:6px 12px 12px;letter-spacing:.08em}
.mobile-link{padding:14px 12px;border-radius:14px;font-size:16px;color:var(--ink-600);font-weight:500}
.mobile-link:hover{background:var(--brand-050);color:var(--ink-900)}
.mobile-link.is-active{background:var(--brand-050);color:var(--brand-600);font-weight:600}
.mobile-nav .btn{margin-top:12px}
body.nav-open{overflow:hidden}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:var(--brand-600);color:#fff;
  box-shadow:0 10px 24px -10px rgba(31,90,214,.55);
}
.btn-primary:hover{background:#1a4fbe;color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px -12px rgba(31,90,214,.62)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-secondary{background:#fff;color:var(--ink-900);border-color:#D8E0F0}
.btn-secondary:hover{border-color:rgba(31,90,214,.4);background:#F5F8FF;color:var(--ink-900);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ============ 页头 ============ */
.page-head{padding:40px 0 8px}
@media (min-width:768px){.page-head{padding:64px 0 12px}}
.head-grid{display:grid;gap:28px}
@media (min-width:1024px){.head-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:48px}}
.eyebrow{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-600);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.page-title{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.02em;margin:18px 0 0}
@media (min-width:768px){.page-title{font-size:44px;line-height:1.22}}
.lead{margin-top:16px;font-size:16px;line-height:28px;color:var(--ink-600);max-width:560px}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:14px;color:var(--ink-600)}
.trust-row span{display:inline-flex;align-items:center;gap:8px}
.trust-row span::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--brand-500)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.head-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 60px -32px rgba(16,26,46,.5);background:#fff}
.head-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 300ms ease-out}
.head-media:hover img{transform:scale(1.02)}
.media-tag{
  position:absolute;left:16px;bottom:16px;height:32px;padding:0 14px;border-radius:999px;
  display:inline-flex;align-items:center;background:rgba(255,255,255,.94);color:var(--ink-900);
  font-size:13px;font-weight:600;box-shadow:0 10px 24px -16px rgba(16,26,46,.6);
}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-head{max-width:720px}
.section-title{font-size:26px;line-height:1.35;font-weight:700}
@media (min-width:768px){.section-title{font-size:32px;line-height:1.3}}
.section-sub{margin-top:12px;font-size:16px;color:var(--ink-600)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:600;white-space:nowrap;
}
.badge-ok{background:rgba(18,165,148,.1);color:var(--ok-500)}
.badge-accent{background:rgba(255,122,61,.12);color:#E8622A}

/* ============ 流程区 ============ */
.flow-grid{display:grid;gap:32px;margin-top:36px}
@media (min-width:1024px){.flow-grid{grid-template-columns:2fr 1fr;gap:36px;align-items:start}}
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:19px;top:10px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-100) 0%,rgba(220,231,251,.15) 100%);
}
.step{position:relative;padding-left:56px;padding-bottom:22px}
.step:last-child{padding-bottom:0}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:999px;
  display:grid;place-items:center;background:#fff;border:1px solid var(--brand-100);
  color:var(--brand-600);font-size:14px;font-weight:700;
  box-shadow:0 10px 22px -16px rgba(16,26,46,.55);
}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-1px);border-color:rgba(31,90,214,.28);box-shadow:var(--shadow-hover)}
.step-title{font-size:18px;line-height:28px;font-weight:600;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
@media (min-width:768px){.step-title{font-size:20px;line-height:30px}}
.step-desc{margin-top:10px;font-size:15px;line-height:26px;color:var(--ink-600)}
.side{display:grid;gap:20px}
@media (min-width:1024px){.side{position:sticky;top:96px}}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow-card)}
.side-title{font-size:16px;font-weight:600;color:var(--ink-900)}
.toc{margin-top:14px;display:grid;gap:4px}
.toc a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:12px;font-size:14px;color:var(--ink-600);
  transition:background var(--ease),color var(--ease);
}
.toc a::after{content:"›";color:var(--ink-400);font-size:16px;line-height:1}
.toc a:hover{background:var(--brand-050);color:var(--brand-600)}
.toc a:hover::after{color:var(--brand-600)}
.tip-list{margin-top:14px;display:grid;gap:12px}
.tip-item{display:flex;gap:10px;font-size:14px;line-height:24px;color:var(--ink-600)}
.tip-dot{flex:none;width:18px;height:18px;margin-top:3px;border-radius:6px;background:var(--brand-050);display:grid;place-items:center}
.tip-dot::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--brand-500)}
.side-cta{background:var(--brand-050);border:1px solid var(--brand-100);border-radius:20px;padding:22px}
.side-cta p{margin-top:8px;font-size:14px;line-height:24px;color:var(--ink-600)}
.side-cta .btn{margin-top:16px}
.side-figure{border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-card)}
.side-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ============ 准备事项 ============ */
.prep-grid{display:grid;gap:16px;margin-top:36px}
@media (min-width:640px){.prep-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.prep-grid{grid-template-columns:repeat(4,1fr)}}
.prep-item{
  background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-card);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.prep-item:hover{transform:translateY(-1px);border-color:rgba(31,90,214,.28);box-shadow:var(--shadow-hover)}
.prep-icon{
  width:36px;height:36px;border-radius:12px;background:var(--brand-050);color:var(--brand-600);
  display:grid;place-items:center;margin-bottom:14px;
}
.prep-title{font-size:17px;font-weight:600;line-height:26px;color:var(--ink-900)}
.prep-desc{margin-top:8px;font-size:14px;line-height:24px;color:var(--ink-600)}

/* ============ 关注要点 ============ */
.pace-band{
  border-radius:var(--radius-lg);border:1px solid var(--brand-100);background:var(--brand-050);
  background-image:linear-gradient(rgba(31,90,214,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(31,90,214,.045) 1px,transparent 1px);
  background-size:28px 28px;padding:32px 24px;
}
@media (min-width:768px){.pace-band{padding:48px 40px}}
.pace-band h2{font-size:24px;line-height:1.35}
@media (min-width:768px){.pace-band h2{font-size:30px}}
.pace-note{margin-top:12px;font-size:15px;line-height:26px;color:var(--ink-600);max-width:620px}
.pace-grid{display:grid;gap:16px;margin-top:28px}
@media (min-width:768px){.pace-grid{grid-template-columns:repeat(3,1fr)}}
.stat{background:#fff;border:1px solid rgba(31,90,214,.14);border-radius:18px;padding:22px;box-shadow:0 1px 2px rgba(16,26,46,.04),0 14px 32px -22px rgba(16,26,46,.3)}
.stat-num{font-size:32px;line-height:1.2;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums}
.stat-label{margin-top:8px;font-size:14px;line-height:24px;color:var(--ink-600)}
.stat-label strong{color:var(--ink-900);font-weight:600}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:32px auto 0}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);line-height:26px;transition:color var(--ease);
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:999px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--brand-600);transition:transform var(--ease),background var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-050)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out}
.faq-a-inner{padding:0 0 22px;font-size:15px;line-height:26px;color:var(--ink-600);max-width:760px}

/* ============ 底部 CTA ============ */
.cta-band{
  border-radius:var(--radius-lg);background:var(--brand-050);border:1px solid var(--brand-100);
  padding:32px 24px;display:grid;gap:24px;align-items:center;
  background-image:linear-gradient(rgba(31,90,214,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(31,90,214,.05) 1px,transparent 1px);
  background-size:30px 30px;
}
@media (min-width:768px){
  .cta-band{padding:48px 44px;grid-template-columns:1.25fr .75fr}
}
.cta-band h2{font-size:24px;line-height:1.35}
@media (min-width:768px){.cta-band h2{font-size:30px}}
.cta-hint{margin-top:12px;font-size:15px;line-height:26px;color:var(--ink-600);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:768px){.cta-actions{justify-content:flex-end}}
.cta-small{margin-top:14px;font-size:12px;line-height:22px;color:var(--ink-400)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#C7D0E2;margin-top:64px;padding:56px 0 24px}
@media (min-width:768px){.site-footer{margin-top:88px;padding:72px 0 28px}}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px}}
.footer-logo{display:flex;align-items:center;gap:10px}
.footer-logo-text{display:flex;flex-direction:column;line-height:1.14}
.footer-logo-text b{font-size:15px;font-weight:700;color:#fff}
.footer-logo-text b i{font-style:normal;color:#7EA4F5}
.footer-logo-text em{font-size:11px;font-style:normal;color:#8A94AB;letter-spacing:.08em}
.footer-desc{margin-top:16px;font-size:14px;line-height:24px;color:#C7D0E2;max-width:320px}
.footer-meta{margin-top:10px;font-size:13px;color:#8A94AB}
.site-footer h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-links a{font-size:14px;color:#C7D0E2}
.footer-links a:hover{color:#7EA4F5;text-decoration:underline}
.footer-note{font-size:13px;line-height:24px;color:#9BA6BF}
.footer-note + .footer-note{margin-top:10px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:#8A94AB;
}
@media (min-width:768px){.footer-bottom{font-size:13px}}

@media (max-width:519px){
  .page-title{font-size:28px;line-height:1.3}
  .btn{width:100%;padding:0 20px}
  .btn-row .btn{width:100%}
  .cta-actions .btn{width:100%}
  .step{padding-left:48px}
  .step-num{width:34px;height:34px;font-size:13px}
  .timeline::before{left:16px}
}