/* roulang page: index */
:root{
      --ink:#1B1B1F;
      --ink-soft:#2A292E;
      --amber:#C8893D;
      --amber-soft:#F3E4D1;
      --safe:#6F8F7A;
      --safe-soft:#E8F0EA;
      --paper:#F6F1EA;
      --paper-2:#FBF8F3;
      --card:#FFFFFF;
      --text:#3E3A36;
      --muted:#7B746D;
      --line:#E6DDD2;
      --warn:#B15D4F;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 40px rgba(27,27,31,.08);
      --shadow-lg:0 24px 60px rgba(27,27,31,.12);
      --container:1200px;
      --ease:all .28s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
      color:var(--text);
      background:var(--paper);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit;color:inherit}
    button{cursor:pointer;border:0;background:none}
    :focus-visible{outline:3px solid rgba(200,137,61,.28);outline-offset:3px}
    ::selection{background:var(--amber-soft);color:var(--ink)}

    .container{
      width:min(100% - 40px,var(--container));
      margin-inline:auto;
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section-title{
      max-width:760px;
      margin:0 0 34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--ink);
      background:rgba(200,137,61,.14);
      border:1px solid rgba(200,137,61,.28);
      font-size:13px;
      font-weight:700;
      letter-spacing:.04em;
      margin-bottom:14px;
    }
    .eyebrow::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--amber);
      box-shadow:0 0 0 4px rgba(200,137,61,.14);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      color:var(--ink);
      font-size:clamp(32px,5vw,48px);
      line-height:1.18;
      letter-spacing:-.04em;
      margin-bottom:22px;
      font-weight:760;
    }
    h2{
      color:var(--ink);
      font-size:clamp(26px,3.4vw,34px);
      line-height:1.25;
      letter-spacing:-.03em;
      margin-bottom:14px;
      font-weight:740;
    }
    h3{
      color:var(--ink);
      font-size:21px;
      line-height:1.35;
      font-weight:700;
      margin-bottom:10px;
    }
    p{font-size:16px;color:var(--muted)}
    .lead{
      font-size:18px;
      line-height:1.85;
      color:#5B554F;
      max-width:720px;
    }

    .site-header{
      position:fixed;
      top:0;
      left:0;
      width:100%;
      z-index:100;
      transition:var(--ease);
      background:rgba(246,241,234,.82);
      backdrop-filter:saturate(140%) blur(16px);
      border-bottom:1px solid rgba(230,221,210,.72);
    }
    .site-header.scrolled{
      background:rgba(255,255,255,.94);
      box-shadow:0 12px 30px rgba(27,27,31,.06);
    }
    .nav{
      height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:var(--ink);
      color:#F9F2E8;
      display:grid;
      place-items:center;
      font-weight:800;
      letter-spacing:.02em;
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:22px;
      height:22px;
      border:2px solid rgba(200,137,61,.85);
      border-radius:50%;
      right:-5px;
      bottom:-5px;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      line-height:1.18;
    }
    .brand-name strong{
      color:var(--ink);
      font-size:17px;
      font-weight:800;
    }
    .brand-name span{
      color:var(--muted);
      font-size:12px;
      font-weight:600;
    }
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:4px;
      margin-left:auto;
    }
    .nav-links a{
      padding:10px 14px;
      border-radius:999px;
      color:#58514B;
      font-size:15px;
      font-weight:650;
      transition:var(--ease);
    }
    .nav-links a:hover,
    .nav-links a.active{
      color:var(--ink);
      background:#fff;
      box-shadow:0 8px 20px rgba(27,27,31,.05);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:12px 22px;
      border-radius:999px;
      font-size:15px;
      font-weight:750;
      line-height:1;
      transition:var(--ease);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--ink);
      color:#FFF8ED;
      box-shadow:0 12px 24px rgba(27,27,31,.12);
    }
    .btn-primary:hover{
      background:var(--ink-soft);
      transform:translateY(-2px);
      box-shadow:0 18px 34px rgba(27,27,31,.16);
    }
    .btn-secondary{
      background:rgba(255,255,255,.72);
      color:var(--ink);
      border-color:#D8CEC3;
    }
    .btn-secondary:hover{
      border-color:var(--amber);
      background:var(--paper-2);
      transform:translateY(-2px);
    }
    .btn-ghost{
      color:var(--ink);
      border-color:rgba(230,221,210,.9);
      background:transparent;
    }
    .btn-ghost:hover{background:#fff;border-color:var(--amber)}
    .menu-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:14px;
      border:1px solid var(--line);
      background:#fff;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      transition:var(--ease);
    }
    .menu-toggle span{
      width:20px;
      height:2px;
      border-radius:2px;
      background:var(--ink);
      transition:var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle.is-open span:nth-child(2){opacity:0}
    .menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    .hero{
      min-height:calc(100vh - 10px);
      padding:136px 0 72px;
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(246,241,234,.96) 0%,rgba(246,241,234,.9) 44%,rgba(246,241,234,.66) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      z-index:-2;
    }
    .hero::after{
      content:"";
      position:absolute;
      right:-120px;
      top:110px;
      width:420px;
      height:420px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(200,137,61,.17),rgba(200,137,61,0) 68%);
      z-index:-1;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(360px,.78fr);
      gap:54px;
      align-items:center;
    }
    .hero-copy{
      max-width:740px;
    }
    .hero-copy .brand-line{
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--ink);
      font-size:14px;
      font-weight:800;
      letter-spacing:.04em;
      background:rgba(255,255,255,.78);
      border:1px solid var(--line);
      border-radius:999px;
      padding:8px 14px;
      margin-bottom:22px;
      box-shadow:0 10px 26px rgba(27,27,31,.04);
    }
    .hero-copy .brand-line i{
      width:22px;
      height:22px;
      border-radius:50%;
      background:var(--safe-soft);
      color:var(--safe);
      display:grid;
      place-items:center;
      font-style:normal;
      font-size:13px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:30px;
    }
    .trust-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:28px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:750;
      line-height:1;
      border:1px solid transparent;
    }
    .badge-safe{background:var(--safe-soft);color:#496D58;border-color:rgba(111,143,122,.18)}
    .badge-note{background:var(--amber-soft);color:#7C5224;border-color:rgba(200,137,61,.22)}
    .badge-neutral{background:#fff;color:var(--ink);border-color:var(--line)}
    .verify-card{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(230,221,210,.92);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-lg);
      padding:30px;
      position:relative;
      overflow:hidden;
    }
    .verify-card::before{
      content:"";
      position:absolute;
      inset:0 0 auto;
      height:4px;
      background:linear-gradient(90deg,var(--amber),rgba(111,143,122,.8));
    }
    .verify-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:16px;
      padding-bottom:20px;
      border-bottom:1px solid var(--line);
      margin-bottom:20px;
    }
    .age-stamp{
      width:84px;
      height:84px;
      border-radius:50%;
      border:2px solid rgba(177,93,79,.36);
      color:var(--warn);
      display:grid;
      place-items:center;
      font-size:26px;
      font-weight:850;
      background:#FFF7F2;
      transform:rotate(-7deg);
      flex:0 0 auto;
    }
    .verify-top h2{
      font-size:25px;
      margin-bottom:8px;
    }
    .status-list{
      display:grid;
      gap:12px;
    }
    .status-item{
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px;
      border-radius:16px;
      background:var(--paper-2);
      border:1px solid rgba(230,221,210,.86);
      transition:var(--ease);
    }
    .status-item:hover{
      background:#fff;
      border-color:rgba(200,137,61,.5);
      transform:translateX(3px);
    }
    .status-icon{
      width:34px;
      height:34px;
      border-radius:12px;
      background:#fff;
      display:grid;
      place-items:center;
      color:var(--safe);
      border:1px solid var(--line);
      font-weight:900;
      flex:0 0 auto;
    }
    .status-text strong{
      display:block;
      color:var(--ink);
      font-size:15px;
      line-height:1.3;
    }
    .status-text span{
      display:block;
      color:var(--muted);
      font-size:13px;
      line-height:1.55;
      margin-top:2px;
    }
    .metric-strip{
      margin-top:36px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      border:1px solid var(--line);
      border-radius:20px;
      background:rgba(255,255,255,.72);
      overflow:hidden;
    }
    .metric{
      padding:18px 20px;
      border-right:1px solid var(--line);
    }
    .metric:last-child{border-right:0}
    .metric strong{
      display:block;
      color:var(--ink);
      font-size:24px;
      line-height:1.1;
    }
    .metric span{
      color:var(--muted);
      font-size:13px;
      font-weight:650;
    }

    .compliance{
      background:linear-gradient(180deg,var(--paper),#fff 62%,var(--paper-2));
    }
    .split-grid{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:48px;
      align-items:start;
    }
    .side-note{
      position:sticky;
      top:104px;
      padding:28px;
      border-radius:var(--radius-lg);
      background:var(--ink);
      color:#F9F2E8;
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .side-note::after{
      content:"";
      position:absolute;
      right:-42px;
      bottom:-56px;
      width:180px;
      height:180px;
      border-radius:50%;
      border:30px solid rgba(200,137,61,.13);
    }
    .side-note h2{color:#FFF8ED}
    .side-note p{color:#D8CEC3}
    .side-note .line{
      width:64px;
      height:3px;
      border-radius:99px;
      background:var(--amber);
      margin:22px 0;
    }
    .card-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .info-card{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      padding:26px;
      box-shadow:0 12px 34px rgba(27,27,31,.045);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .info-card::after{
      content:"";
      position:absolute;
      left:26px;
      right:26px;
      bottom:0;
      height:3px;
      background:rgba(200,137,61,.72);
      transform:scaleX(.28);
      transform-origin:left;
      transition:var(--ease);
      border-radius:99px 99px 0 0;
    }
    .info-card:hover{
      transform:translateY(-4px);
      border-color:var(--amber);
      box-shadow:var(--shadow);
    }
    .info-card:hover::after{transform:scaleX(1)}
    .icon-box{
      width:44px;
      height:44px;
      border-radius:15px;
      display:grid;
      place-items:center;
      background:var(--paper-2);
      border:1px solid var(--line);
      color:var(--amber);
      font-size:20px;
      margin-bottom:18px;
    }
    .info-card p{margin-bottom:0}

    .process{
      background:var(--paper-2);
    }
    .steps{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
      position:relative;
    }
    .step{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      padding:24px;
      box-shadow:0 10px 28px rgba(27,27,31,.045);
      position:relative;
      transition:var(--ease);
    }
    .step:hover{
      transform:translateY(-4px);
      border-color:var(--amber);
      box-shadow:var(--shadow);
    }
    .step-number{
      width:38px;
      height:38px;
      border-radius:50%;
      display:grid;
      place-items:center;
      color:#FFF8ED;
      background:var(--ink);
      font-weight:850;
      margin-bottom:18px;
      box-shadow:0 8px 18px rgba(27,27,31,.16);
    }
    .step p{font-size:15px;margin-bottom:0}

    .visual-section{
      background:#fff;
    }
    .feature-banner{
      display:grid;
      grid-template-columns:1fr .86fr;
      gap:28px;
      align-items:center;
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(135deg,#fff 0%,var(--paper-2) 100%);
      box-shadow:var(--shadow);
    }
    .feature-copy{padding:20px 12px 20px 20px}
    .feature-list{
      display:grid;
      gap:12px;
      padding:0;
      margin:24px 0 0;
      list-style:none;
    }
    .feature-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#5C554E;
      font-weight:650;
    }
    .feature-list li::before{
      content:"✓";
      width:22px;
      height:22px;
      border-radius:50%;
      background:var(--safe-soft);
      color:var(--safe);
      display:grid;
      place-items:center;
      font-size:13px;
      font-weight:900;
      flex:0 0 auto;
      margin-top:3px;
    }
    .feature-image{
      position:relative;
      border-radius:24px;
      overflow:hidden;
      min-height:360px;
      background:var(--paper);
    }
    .feature-image img{
      width:100%;
      height:100%;
      min-height:360px;
      object-fit:cover;
      filter:saturate(.92) contrast(.98);
    }
    .feature-image::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(27,27,31,0),rgba(27,27,31,.28));
    }

    .updates{
      background:linear-gradient(180deg,var(--paper-2),var(--paper));
    }
    .updates-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:32px;
    }
    .updates-head .section-title{margin-bottom:0}
    .updates-layout{
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:22px;
      align-items:stretch;
    }
    .post-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      overflow:hidden;
      box-shadow:0 12px 32px rgba(27,27,31,.045);
      transition:var(--ease);
      height:100%;
      display:flex;
      flex-direction:column;
    }
    .post-card:hover{
      transform:translateY(-4px);
      border-color:var(--amber);
      box-shadow:var(--shadow);
    }
    .post-card:hover .post-title{
      text-decoration:underline;
      text-decoration-color:rgba(200,137,61,.55);
      text-underline-offset:5px;
    }
    .post-cover{
      aspect-ratio:16/9;
      background:var(--paper-2);
      overflow:hidden;
    }
    .post-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:var(--ease);
    }
    .post-card:hover .post-cover img{transform:scale(1.035)}
    .post-body{
      padding:24px;
      display:flex;
      flex-direction:column;
      flex:1;
    }
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:13px;
      margin-bottom:12px;
    }
    .post-title{
      color:var(--ink);
      font-size:21px;
      line-height:1.36;
      margin:0 0 10px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .post-excerpt{
      color:var(--muted);
      font-size:15px;
      line-height:1.7;
      margin-bottom:18px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .read-link{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--ink);
      font-weight:800;
      font-size:14px;
    }
    .read-link::after{
      content:"→";
      color:var(--amber);
      transition:var(--ease);
    }
    .post-card:hover .read-link::after{transform:translateX(4px)}
    .post-list{
      display:grid;
      gap:14px;
    }
    .post-row{
      display:grid;
      grid-template-columns:126px 1fr;
      gap:16px;
      align-items:center;
      padding:14px;
      border:1px solid var(--line);
      border-radius:18px;
      background:#fff;
      transition:var(--ease);
    }
    .post-row:hover{
      transform:translateY(-4px);
      border-color:var(--amber);
      box-shadow:var(--shadow);
    }
    .post-row img{
      width:126px;
      height:92px;
      object-fit:cover;
      border-radius:14px;
      background:var(--paper-2);
    }
    .post-row h3{
      font-size:17px;
      margin-bottom:5px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .post-row p{
      font-size:14px;
      line-height:1.55;
      margin-bottom:8px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .empty-state{
      grid-column:1/-1;
      padding:42px 24px;
      text-align:center;
      background:#fff;
      border:1px dashed rgba(200,137,61,.42);
      border-radius:var(--radius-lg);
      box-shadow:0 10px 30px rgba(27,27,31,.04);
    }
    .empty-icon{
      width:58px;
      height:58px;
      border-radius:20px;
      margin:0 auto 14px;
      background:var(--amber-soft);
      color:var(--amber);
      display:grid;
      place-items:center;
      font-size:26px;
    }
    .empty-state p{margin-bottom:18px}

    .privacy{
      background:var(--paper);
      padding-top:28px;
    }
    .privacy-panel{
      background:var(--ink);
      border-radius:var(--radius-lg);
      padding:42px;
      color:#FFF8ED;
      position:relative;
      overflow:hidden;
      box-shadow:var(--shadow-lg);
    }
    .privacy-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(27,27,31,.95),rgba(27,27,31,.84)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      z-index:0;
    }
    .privacy-panel > *{position:relative;z-index:1}
    .privacy-panel h2{color:#FFF8ED}
    .privacy-panel p{color:#D8CEC3}
    .privacy-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:30px;
      align-items:center;
    }
    .privacy-items{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
    }
    .privacy-item{
      padding:18px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      color:#F9F2E8;
    }
    .privacy-item strong{
      display:block;
      margin-bottom:4px;
      color:#fff;
    }
    .privacy-item span{
      color:#D8CEC3;
      font-size:14px;
      line-height:1.55;
    }

    .evidence{
      background:#fff;
    }
    .evidence-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:18px;
    }
    .evidence-card{
      padding:26px;
      border-radius:var(--radius-md);
      border:1px solid var(--line);
      background:var(--paper-2);
    }
    .evidence-card strong{
      display:block;
      color:var(--ink);
      font-size:30px;
      line-height:1.1;
      margin-bottom:8px;
    }
    .evidence-card span{
      color:var(--muted);
      font-weight:650;
      font-size:14px;
    }
    .evidence-card p{
      margin:16px 0 0;
      font-size:15px;
    }

    .faq{
      background:var(--paper-2);
    }
    .faq-wrap{
      max-width:900px;
      margin:0 auto;
    }
    .faq .section-title{
      text-align:center;
      margin:0 auto 34px;
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      overflow:hidden;
      box-shadow:0 10px 26px rgba(27,27,31,.04);
      transition:var(--ease);
    }
    .faq-item.is-open{
      border-color:rgba(200,137,61,.62);
      box-shadow:var(--shadow);
    }
    .faq-question{
      width:100%;
      min-height:62px;
      padding:18px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      text-align:left;
      color:var(--ink);
      font-weight:800;
      background:#fff;
    }
    .faq-icon{
      width:28px;
      height:28px;
      border-radius:50%;
      background:var(--paper-2);
      border:1px solid var(--line);
      display:grid;
      place-items:center;
      flex:0 0 auto;
      transition:var(--ease);
    }
    .faq-item.is-open .faq-icon{
      transform:rotate(45deg);
      background:var(--amber-soft);
      color:var(--amber);
      border-color:rgba(200,137,61,.36);
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .32s ease;
    }
    .faq-answer-inner{
      padding:0 22px 20px 24px;
      border-left:3px solid var(--amber);
      margin-left:22px;
      margin-bottom:18px;
    }
    .faq-answer p{
      margin:0;
      font-size:15px;
      line-height:1.75;
    }

    .cta{
      background:var(--paper);
      padding:88px 0;
    }
    .cta-card{
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,rgba(255,255,255,.94),rgba(251,248,243,.92)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      border:1px solid var(--line);
      box-shadow:var(--shadow-lg);
      padding:48px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .cta-card::after{
      content:"";
      position:absolute;
      top:0;
      left:48px;
      width:120px;
      height:4px;
      background:var(--amber);
      border-radius:0 0 99px 99px;
    }
    .cta-card p{max-width:680px;margin-bottom:0}
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }

    .site-footer{
      background:var(--ink);
      color:#F9F2E8;
      padding:58px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:34px;
      padding-bottom:36px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:16px;
    }
    .footer-brand .brand-mark{background:#FFF8ED;color:var(--ink)}
    .footer-brand strong{color:#fff;font-size:18px}
    .site-footer p{
      color:#CFC6BA;
      font-size:14px;
      max-width:560px;
      margin-bottom:0;
    }
    .footer-col h3{
      color:#fff;
      font-size:16px;
      margin-bottom:14px;
    }
    .footer-links{
      display:grid;
      gap:10px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .footer-links a{
      color:#CFC6BA;
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      padding-left:4px;
    }
    .copyright{
      padding-top:22px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#AFA69B;
      font-size:13px;
    }

    @media (max-width:1024px){
      .hero-grid,
      .split-grid,
      .feature-banner,
      .privacy-grid,
      .updates-layout{
        grid-template-columns:1fr;
      }
      .side-note{position:relative;top:auto}
      .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
      .feature-image,.feature-image img{min-height:300px}
      .cta-card{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr 1fr}
    }

    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .section{padding:64px 0}
      .nav{height:68px}
      .nav-links{
        position:absolute;
        left:14px;
        right:14px;
        top:76px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        background:#fff;
        border:1px solid var(--line);
        border-radius:22px;
        box-shadow:var(--shadow);
      }
      .nav-links.is-open{display:flex}
      .nav-links a{
        min-height:44px;
        display:flex;
        align-items:center;
        padding:12px 14px;
      }
      .nav-actions .btn{display:none}
      .menu-toggle{display:flex}
      .hero{padding:108px 0 54px;min-height:auto}
      .hero-grid{gap:32px}
      .verify-card{padding:24px}
      .metric-strip{grid-template-columns:1fr}
      .metric{border-right:0;border-bottom:1px solid var(--line)}
      .metric:last-child{border-bottom:0}
      .card-grid,
      .privacy-items,
      .evidence-grid{
        grid-template-columns:1fr;
      }
      .updates-head{
        align-items:flex-start;
        flex-direction:column;
      }
      .post-row{grid-template-columns:98px 1fr}
      .post-row img{width:98px;height:78px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{flex-direction:column}
    }

    @media (max-width:520px){
      h1{font-size:31px}
      h2{font-size:25px}
      .hero-actions,
      .cta-actions{
        flex-direction:column;
      }
      .btn{width:100%;padding-inline:18px}
      .brand-name span{display:none}
      .verify-top{flex-direction:column}
      .age-stamp{width:72px;height:72px;font-size:22px}
      .steps{grid-template-columns:1fr}
      .feature-banner,
      .privacy-panel,
      .cta-card{
        padding:24px;
        border-radius:24px;
      }
      .post-row{
        grid-template-columns:1fr;
      }
      .post-row img{
        width:100%;
        height:160px;
      }
      .faq-question{padding:16px}
      .faq-answer-inner{margin-left:16px;padding-right:16px}
    }

/* roulang page: article */
:root{
      --ink:#1B1B1F;
      --ink-soft:#2A292E;
      --amber:#C8893D;
      --amber-soft:#F3E4D1;
      --safe:#6F8F7A;
      --safe-soft:#E8F0EA;
      --paper:#F6F1EA;
      --paper-2:#FBF8F3;
      --card:#FFFFFF;
      --text:#3E3A36;
      --muted:#7B746D;
      --line:#E6DDD2;
      --warn:#B15D4F;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 40px rgba(27,27,31,.08);
      --shadow-lg:0 24px 60px rgba(27,27,31,.12);
      --container:1200px;
      --ease:all .28s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
      color:var(--text);
      background:var(--paper);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit;color:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(200,137,61,.28);color:var(--ink)}
    :focus-visible{outline:3px solid rgba(200,137,61,.28);outline-offset:3px}
    .container{
      width:min(100% - 40px,var(--container));
      margin-inline:auto;
      max-width:none;
      padding-left:0;
      padding-right:0;
    }
    .section{
      padding:86px 0;
      position:relative;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--ink);
      background:rgba(200,137,61,.14);
      border:1px solid rgba(200,137,61,.28);
      font-size:13px;
      font-weight:700;
      letter-spacing:.04em;
      margin-bottom:14px;
    }
    .eyebrow::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--amber);
      box-shadow:0 0 0 4px rgba(200,137,61,.14);
    }
    .lead{
      font-size:18px;
      line-height:1.85;
      color:#5B554F;
      max-width:760px;
      margin:0;
    }
    .site-header{
      position:fixed;
      top:0;
      left:0;
      width:100%;
      z-index:100;
      transition:var(--ease);
      background:rgba(246,241,234,.82);
      backdrop-filter:saturate(140%) blur(16px);
      border-bottom:1px solid rgba(230,221,210,.72);
    }
    .site-header.scrolled{
      background:rgba(255,255,255,.94);
      box-shadow:0 12px 30px rgba(27,27,31,.06);
    }
    .nav{
      height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:var(--ink);
      color:#F9F2E8;
      display:grid;
      place-items:center;
      font-weight:800;
      letter-spacing:.02em;
      position:relative;
      overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:22px;
      height:22px;
      border:2px solid rgba(200,137,61,.85);
      border-radius:50%;
      right:-5px;
      bottom:-5px;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      line-height:1.18;
    }
    .brand-name strong{
      color:var(--ink);
      font-size:17px;
      font-weight:800;
    }
    .brand-name span{
      color:var(--muted);
      font-size:12px;
      font-weight:600;
    }
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:4px;
      margin-left:auto;
    }
    .nav-links a{
      padding:10px 14px;
      border-radius:999px;
      color:#58514B;
      font-size:15px;
      font-weight:650;
      transition:var(--ease);
    }
    .nav-links a:hover,
    .nav-links a.active{
      color:var(--ink);
      background:#fff;
      box-shadow:0 8px 20px rgba(27,27,31,.05);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:12px 22px;
      border-radius:999px;
      font-size:15px;
      font-weight:750;
      line-height:1;
      transition:var(--ease);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--ink);
      color:#FFF8ED;
      box-shadow:0 12px 24px rgba(27,27,31,.12);
    }
    .btn-primary:hover{
      background:var(--ink-soft);
      color:#FFF8ED;
      transform:translateY(-2px);
      box-shadow:0 18px 34px rgba(27,27,31,.16);
    }
    .btn-secondary{
      background:rgba(255,255,255,.72);
      color:var(--ink);
      border-color:#D8CEC3;
    }
    .btn-secondary:hover{
      border-color:var(--amber);
      background:var(--paper-2);
      color:var(--ink);
      transform:translateY(-2px);
    }
    .btn-ghost{
      color:var(--ink);
      border-color:rgba(230,221,210,.9);
      background:transparent;
    }
    .btn-ghost:hover{
      background:#fff;
      color:var(--ink);
      border-color:var(--amber);
    }
    .menu-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:14px;
      border:1px solid var(--line);
      background:#fff;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      transition:var(--ease);
    }
    .menu-toggle span{
      width:20px;
      height:2px;
      border-radius:2px;
      background:var(--ink);
      transition:var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle.is-open span:nth-child(2){opacity:0}
    .menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    .article-hero{
      padding:132px 0 52px;
      position:relative;
      overflow:hidden;
      border-bottom:1px solid rgba(230,221,210,.76);
    }
    .article-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(246,241,234,.98),rgba(246,241,234,.9) 55%,rgba(246,241,234,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      z-index:-2;
    }
    .article-hero::after{
      content:"";
      position:absolute;
      right:-140px;
      top:82px;
      width:420px;
      height:420px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(111,143,122,.18),rgba(111,143,122,0) 68%);
      z-index:-1;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin:0 0 26px;
      padding:0;
      color:var(--muted);
      font-size:14px;
      font-weight:650;
    }
    .breadcrumb a{
      transition:var(--ease);
    }
    .breadcrumb a:hover{
      color:var(--amber);
      text-decoration:underline;
      text-underline-offset:4px;
    }
    .breadcrumb span{
      color:#9A9087;
    }
    .article-head-grid{
      display:grid;
      grid-template-columns:minmax(0,1fr) 380px;
      gap:44px;
      align-items:end;
    }
    .article-meta-row{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:10px;
      margin-bottom:18px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      padding:7px 12px;
      font-size:13px;
      line-height:1;
      font-weight:750;
      border:1px solid transparent;
    }
    .badge-category{
      background:#fff;
      color:var(--ink);
      border-color:var(--line);
    }
    .badge-safe{
      background:var(--safe-soft);
      color:#425B4E;
      border-color:rgba(111,143,122,.25);
    }
    .badge-warn{
      background:rgba(177,93,79,.09);
      color:#8D4439;
      border-color:rgba(177,93,79,.2);
    }
    .article-title{
      color:var(--ink);
      font-size:clamp(32px,5vw,50px);
      line-height:1.16;
      font-weight:800;
      letter-spacing:-.03em;
      margin:0 0 18px;
      max-width:850px;
    }
    .article-summary{
      font-size:18px;
      line-height:1.9;
      color:#5B554F;
      max-width:820px;
      margin:0;
    }
    .cover-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      padding:12px;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .cover-card img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      border-radius:22px;
      filter:saturate(.92) contrast(.98);
    }
    .cover-note{
      position:absolute;
      left:24px;
      right:24px;
      bottom:24px;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,248,237,.9);
      backdrop-filter:blur(12px);
      border:1px solid rgba(230,221,210,.75);
      color:var(--ink);
      font-size:14px;
      font-weight:750;
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:center;
    }
    .cover-note i{
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--safe);
      box-shadow:0 0 0 5px rgba(111,143,122,.16);
      flex:0 0 auto;
    }

    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) minmax(280px,340px);
      gap:42px;
      align-items:start;
      padding-top:72px;
      padding-bottom:28px;
    }
    .article-shell{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .reading-bar{
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      padding:18px 24px;
      border-bottom:1px solid var(--line);
      background:linear-gradient(180deg,#fff,var(--paper-2));
      color:var(--muted);
      font-size:14px;
      font-weight:650;
    }
    .reading-bar strong{
      color:var(--ink);
      font-weight:800;
    }
    .article-content{
      padding:38px 42px 44px;
      font-size:17px;
      line-height:1.88;
      color:var(--text);
      word-break:break-word;
    }
    .article-content > *:first-child{margin-top:0}
    .article-content > *:last-child{margin-bottom:0}
    .article-content h2,
    .article-content h3,
    .article-content h4{
      color:var(--ink);
      line-height:1.35;
      font-weight:800;
      letter-spacing:-.01em;
    }
    .article-content h2{
      font-size:30px;
      margin:2.1em 0 .75em;
      padding-top:8px;
      position:relative;
    }
    .article-content h2::before{
      content:"";
      display:block;
      width:48px;
      height:4px;
      border-radius:4px;
      background:var(--amber);
      margin-bottom:14px;
    }
    .article-content h3{
      font-size:23px;
      margin:1.7em 0 .65em;
    }
    .article-content h4{
      font-size:19px;
      margin:1.4em 0 .55em;
    }
    .article-content p{
      margin:0 0 1.08em;
    }
    .article-content a{
      color:var(--ink);
      font-weight:750;
      text-decoration:underline;
      text-decoration-color:rgba(200,137,61,.55);
      text-underline-offset:4px;
      transition:var(--ease);
    }
    .article-content a:hover{
      color:var(--amber);
      text-decoration-color:var(--amber);
    }
    .article-content ul,
    .article-content ol{
      margin:0 0 1.2em 1.25em;
      padding:0;
    }
    .article-content li{
      margin:.38em 0;
      padding-left:.15em;
    }
    .article-content blockquote{
      margin:1.5em 0;
      padding:20px 22px;
      border-left:4px solid var(--amber);
      background:var(--paper-2);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      color:#544E48;
      font-weight:650;
    }
    .article-content .notice,
    .article-content .tips,
    .article-content .warning{
      border-radius:var(--radius-md);
      padding:18px 20px;
      border:1px solid rgba(200,137,61,.26);
      background:rgba(243,228,209,.48);
      color:#55422B;
      margin:1.4em 0;
    }
    .article-content img{
      border-radius:18px;
      border:1px solid var(--line);
      margin:1.5em auto .6em;
      box-shadow:0 14px 32px rgba(27,27,31,.07);
    }
    .article-content figure{
      margin:1.6em 0;
    }
    .article-content figcaption{
      margin-top:10px;
      color:var(--muted);
      font-size:14px;
      text-align:center;
    }
    .article-content table{
      width:100%;
      display:block;
      overflow-x:auto;
      border-collapse:collapse;
      margin:1.5em 0;
      border:1px solid var(--line);
      border-radius:16px;
      background:#fff;
    }
    .article-content th,
    .article-content td{
      padding:13px 15px;
      border-bottom:1px solid var(--line);
      min-width:130px;
      text-align:left;
      vertical-align:top;
    }
    .article-content th{
      color:var(--ink);
      background:var(--paper-2);
      font-weight:800;
    }
    .empty-state{
      text-align:center;
      padding:54px 24px;
      background:var(--paper-2);
      border:1px dashed rgba(200,137,61,.45);
      border-radius:var(--radius-lg);
    }
    .empty-icon{
      width:62px;
      height:62px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--line);
      display:grid;
      place-items:center;
      margin:0 auto 18px;
      color:var(--amber);
      font-size:28px;
      box-shadow:0 12px 28px rgba(27,27,31,.06);
    }
    .empty-state h2{
      color:var(--ink);
      font-size:28px;
      margin:0 0 10px;
      font-weight:800;
    }
    .empty-state p{
      margin:0 auto 22px;
      max-width:520px;
      color:var(--muted);
    }

    .side-column{
      position:sticky;
      top:98px;
      display:grid;
      gap:18px;
    }
    .side-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      padding:24px;
      overflow:hidden;
    }
    .side-card.highlight{
      background:var(--ink);
      color:#FFF8ED;
      border-color:rgba(255,255,255,.08);
      position:relative;
    }
    .side-card.highlight::after{
      content:"";
      position:absolute;
      width:160px;
      height:160px;
      right:-54px;
      top:-54px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(200,137,61,.3),rgba(200,137,61,0) 70%);
    }
    .side-card h2,
    .side-card h3{
      color:inherit;
      font-size:20px;
      line-height:1.35;
      font-weight:800;
      margin:0 0 14px;
      position:relative;
      z-index:1;
    }
    .side-card p{
      color:inherit;
      opacity:.82;
      margin:0 0 18px;
      font-size:15px;
      line-height:1.75;
      position:relative;
      z-index:1;
    }
    .prompt-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
      position:relative;
      z-index:1;
    }
    .prompt-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:12px;
      border-radius:14px;
      background:var(--paper-2);
      border:1px solid var(--line);
      color:#554E48;
      font-size:14px;
      line-height:1.55;
    }
    .highlight .prompt-list li{
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.12);
      color:#FFF8ED;
    }
    .prompt-list span{
      width:22px;
      height:22px;
      border-radius:50%;
      background:rgba(111,143,122,.16);
      color:#496552;
      flex:0 0 auto;
      display:grid;
      place-items:center;
      font-size:12px;
      font-weight:900;
      margin-top:1px;
    }
    .highlight .prompt-list span{
      background:rgba(200,137,61,.24);
      color:#F3D8B3;
    }
    .side-actions{
      display:grid;
      gap:10px;
      margin-top:18px;
      position:relative;
      z-index:1;
    }

    .check-section{
      padding:46px 0 28px;
    }
    .check-panel{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      padding:30px;
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:26px;
      align-items:center;
    }
    .check-panel h2{
      color:var(--ink);
      font-size:28px;
      line-height:1.28;
      margin:0 0 12px;
      font-weight:800;
    }
    .check-panel p{
      color:var(--muted);
      margin:0;
    }
    .check-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
    }
    .check-item{
      border:1px solid var(--line);
      background:var(--paper-2);
      border-radius:18px;
      padding:18px;
      transition:var(--ease);
    }
    .check-item:hover{
      transform:translateY(-3px);
      border-color:var(--amber);
      box-shadow:0 12px 26px rgba(27,27,31,.06);
    }
    .check-item strong{
      display:block;
      color:var(--ink);
      margin-bottom:6px;
      font-size:16px;
    }
    .check-item span{
      display:block;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }

    .related-section{
      padding:54px 0 86px;
    }
    .section-title{
      max-width:760px;
      margin:0 0 30px;
    }
    .section-title h2{
      color:var(--ink);
      font-size:34px;
      line-height:1.25;
      font-weight:800;
      margin:0 0 10px;
      letter-spacing:-.02em;
    }
    .related-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:22px;
    }
    .related-feature,
    .related-list-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .related-feature{
      transition:var(--ease);
    }
    .related-feature:hover{
      transform:translateY(-4px);
      border-color:var(--amber);
      box-shadow:var(--shadow-lg);
    }
    .related-feature img{
      width:100%;
      aspect-ratio:16/8.6;
      object-fit:cover;
    }
    .related-feature-body{
      padding:24px;
    }
    .related-feature h3,
    .related-item h3{
      color:var(--ink);
      font-size:20px;
      line-height:1.42;
      font-weight:800;
      margin:0 0 10px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .related-feature p,
    .related-item p{
      color:var(--muted);
      font-size:15px;
      line-height:1.72;
      margin:0 0 14px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .card-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:#8C837A;
      font-size:13px;
      font-weight:650;
    }
    .related-list-card{
      padding:8px;
      display:grid;
      gap:0;
    }
    .related-item{
      padding:18px;
      border-radius:22px;
      transition:var(--ease);
      border:1px solid transparent;
    }
    .related-item + .related-item{
      border-top:1px solid var(--line);
      border-radius:0;
    }
    .related-item:hover{
      background:var(--paper-2);
      border-color:rgba(200,137,61,.45);
      transform:translateY(-2px);
    }

    .faq-section{
      padding:0 0 86px;
    }
    .faq-grid{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:34px;
      align-items:start;
    }
    .faq-intro{
      background:var(--ink);
      color:#FFF8ED;
      border-radius:var(--radius-lg);
      padding:30px;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .faq-intro::after{
      content:"";
      position:absolute;
      width:190px;
      height:190px;
      right:-60px;
      bottom:-70px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(200,137,61,.24),rgba(200,137,61,0) 72%);
    }
    .faq-intro h2{
      font-size:30px;
      line-height:1.25;
      font-weight:800;
      margin:0 0 14px;
      position:relative;
      z-index:1;
    }
    .faq-intro p{
      margin:0;
      opacity:.82;
      position:relative;
      z-index:1;
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      box-shadow:0 10px 26px rgba(27,27,31,.05);
      overflow:hidden;
      transition:var(--ease);
    }
    .faq-item:hover{
      border-color:rgba(200,137,61,.55);
    }
    .faq-question{
      width:100%;
      min-height:58px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 20px;
      color:var(--ink);
      font-weight:800;
      text-align:left;
      background:#fff;
    }
    .faq-question span{
      width:28px;
      height:28px;
      border-radius:50%;
      background:var(--paper-2);
      border:1px solid var(--line);
      flex:0 0 auto;
      display:grid;
      place-items:center;
      transition:var(--ease);
      color:var(--amber);
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .32s ease;
    }
    .faq-answer p{
      margin:0;
      padding:0 20px 20px 24px;
      border-left:3px solid var(--amber);
      color:var(--muted);
      line-height:1.75;
    }
    .faq-item.is-open .faq-question span{
      transform:rotate(45deg);
      background:var(--amber-soft);
      border-color:rgba(200,137,61,.4);
    }
    .faq-item.is-open .faq-answer{
      max-height:220px;
    }

    .cta-section{
      padding:0 0 90px;
    }
    .cta-card{
      border-radius:34px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.94),rgba(251,248,243,.96)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      border:1px solid var(--line);
      box-shadow:var(--shadow-lg);
      padding:42px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .cta-card::before{
      content:"";
      position:absolute;
      left:0;
      top:0;
      width:100%;
      height:4px;
      background:linear-gradient(90deg,var(--amber),rgba(111,143,122,.8));
    }
    .cta-card h2{
      color:var(--ink);
      font-size:34px;
      line-height:1.25;
      font-weight:800;
      margin:0 0 12px;
    }
    .cta-card p{
      margin:0;
      color:#5B554F;
      max-width:760px;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }

    .site-footer{
      background:var(--ink);
      color:#FFF8ED;
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.3fr .7fr .7fr;
      gap:42px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:16px;
    }
    .footer-brand strong{
      font-size:19px;
      font-weight:850;
    }
    .site-footer p{
      color:rgba(255,248,237,.72);
      margin:0;
      max-width:560px;
      font-size:15px;
      line-height:1.8;
    }
    .footer-col h3{
      color:#FFF8ED;
      font-size:16px;
      font-weight:800;
      margin:0 0 14px;
    }
    .footer-links{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:rgba(255,248,237,.7);
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{
      color:#F3D8B3;
      padding-left:4px;
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      color:rgba(255,248,237,.58);
      font-size:13px;
    }

    @media (max-width:1024px){
      .article-head-grid,
      .article-layout,
      .check-panel,
      .faq-grid,
      .related-grid{
        grid-template-columns:1fr;
      }
      .cover-card{
        max-width:620px;
      }
      .side-column{
        position:static;
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
      .cta-card{
        grid-template-columns:1fr;
      }
      .cta-actions{
        justify-content:flex-start;
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
      .footer-grid > div:first-child{
        grid-column:1/-1;
      }
    }
    @media (max-width:768px){
      .container{
        width:min(100% - 28px,var(--container));
      }
      .nav{
        height:68px;
      }
      .brand-name span{
        display:none;
      }
      .nav-links{
        position:absolute;
        top:76px;
        left:14px;
        right:14px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        background:rgba(255,255,255,.97);
        border:1px solid var(--line);
        border-radius:22px;
        box-shadow:var(--shadow);
      }
      .nav-links.is-open{
        display:flex;
      }
      .nav-links a{
        min-height:44px;
        display:flex;
        align-items:center;
        border-radius:14px;
      }
      .nav-actions .btn{
        display:none;
      }
      .menu-toggle{
        display:flex;
      }
      .article-hero{
        padding:106px 0 42px;
      }
      .article-title{
        font-size:32px;
      }
      .article-summary{
        font-size:16px;
      }
      .article-layout{
        padding-top:44px;
      }
      .article-content{
        padding:28px 22px 32px;
        font-size:16px;
      }
      .article-content h2{
        font-size:25px;
      }
      .article-content h3{
        font-size:21px;
      }
      .reading-bar{
        padding:16px 18px;
      }
      .side-column,
      .check-grid{
        grid-template-columns:1fr;
      }
      .section,
      .related-section{
        padding:58px 0;
      }
      .faq-section,
      .cta-section{
        padding-bottom:58px;
      }
      .cta-card{
        padding:28px 22px;
        border-radius:26px;
      }
      .cta-card h2,
      .section-title h2,
      .faq-intro h2{
        font-size:27px;
      }
      .footer-grid{
        grid-template-columns:1fr;
        gap:28px;
      }
    }
    @media (max-width:520px){
      .brand-mark{
        width:38px;
        height:38px;
        border-radius:13px;
      }
      .brand-name strong{
        font-size:15px;
      }
      .article-meta-row{
        gap:8px;
      }
      .badge{
        font-size:12px;
        padding:7px 10px;
      }
      .cover-note{
        position:static;
        margin-top:10px;
        background:var(--paper-2);
      }
      .article-shell,
      .side-card,
      .check-panel,
      .related-feature,
      .related-list-card,
      .faq-intro{
        border-radius:22px;
      }
      .check-panel{
        padding:22px;
      }
      .cta-actions,
      .cta-actions .btn,
      .side-actions .btn{
        width:100%;
      }
      .btn{
        width:100%;
        padding-left:16px;
        padding-right:16px;
      }
      .copyright{
        flex-direction:column;
        gap:8px;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}