/* roulang page: index */
:root{
      --bg:#0b0f19;
      --bg-soft:#111827;
      --surface:#ffffff;
      --surface-soft:#f6f7fb;
      --surface-dark:#151b2c;
      --text:#182033;
      --text-light:#f9fafb;
      --muted:#667085;
      --muted-light:#b8c0d4;
      --primary:#b4235a;
      --primary-2:#7c2d6b;
      --accent:#f5b84b;
      --success:#12b76a;
      --border:#e6e9f0;
      --border-dark:rgba(255,255,255,.14);
      --shadow:0 18px 50px rgba(15,23,42,.12);
      --shadow-soft:0 10px 28px rgba(15,23,42,.08);
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --header-h:76px;
      --transition:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:linear-gradient(180deg,#fff 0%,#f7f8fc 46%,#fff 100%);
      line-height:1.72;
      min-width:320px;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    ::selection{background:rgba(180,35,90,.16);color:var(--primary)}
    .container{
      width:min(var(--container),calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(230,233,240,.78);
    }
    .nav-wrap{
      height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:-.02em;
      color:#121827;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      display:grid;
      place-items:center;
      color:#fff;
      box-shadow:0 12px 26px rgba(180,35,90,.26);
      flex:0 0 auto;
      font-weight:900;
    }
    .brand span:last-child{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:330px;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      background:#f3f5f9;
      border:1px solid var(--border);
      border-radius:999px;
    }
    .nav a{
      padding:10px 18px;
      border-radius:999px;
      color:#4b5565;
      font-weight:700;
      transition:var(--transition);
    }
    .nav a:hover,.nav a:focus{
      color:var(--primary);
      background:#fff;
      outline:none;
    }
    .nav a.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 10px 20px rgba(124,45,107,.2);
    }
    .header-action{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .age-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border:1px solid var(--border);
      border-radius:999px;
      background:#fff;
      color:#344054;
      font-weight:800;
      white-space:nowrap;
      box-shadow:0 8px 20px rgba(15,23,42,.04);
    }
    .age-dot{
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--success);
      box-shadow:0 0 0 5px rgba(18,183,106,.12);
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:none;
      border-radius:14px;
      background:#f2f4f7;
      color:#111827;
      cursor:pointer;
    }
    .menu-toggle span{
      display:block;
      width:20px;
      height:2px;
      margin:5px auto;
      background:currentColor;
      border-radius:2px;
    }
    .hero{
      position:relative;
      overflow:hidden;
      min-height:660px;
      color:var(--text-light);
      background:
        linear-gradient(110deg,rgba(8,12,24,.94) 0%,rgba(31,18,42,.78) 48%,rgba(180,35,90,.36) 100%),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    }
    .hero:after{
      content:"";
      position:absolute;
      inset:auto -12% -36% -12%;
      height:330px;
      background:radial-gradient(circle at 50% 0,rgba(245,184,75,.22),transparent 62%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      z-index:1;
      padding:96px 0 72px;
      display:grid;
      grid-template-columns:1.18fr .82fr;
      gap:46px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 13px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.22);
      background:rgba(255,255,255,.1);
      color:#fff;
      font-weight:800;
      backdrop-filter:blur(8px);
      margin-bottom:22px;
    }
    .eyebrow:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
    }
    h1{
      margin:0;
      font-size:clamp(38px,6vw,74px);
      line-height:1.06;
      letter-spacing:-.055em;
      max-width:900px;
    }
    .hero-lead{
      margin:24px 0 0;
      max-width:720px;
      font-size:19px;
      color:#d9deeb;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:34px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 22px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:900;
      cursor:pointer;
      transition:var(--transition);
      text-align:center;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 16px 34px rgba(180,35,90,.35);
    }
    .btn-primary:hover,.btn-primary:focus{
      transform:translateY(-2px);
      box-shadow:0 20px 42px rgba(180,35,90,.42);
      outline:none;
    }
    .btn-ghost{
      color:#fff;
      border-color:rgba(255,255,255,.25);
      background:rgba(255,255,255,.09);
      backdrop-filter:blur(8px);
    }
    .btn-ghost:hover,.btn-ghost:focus{
      background:rgba(255,255,255,.16);
      transform:translateY(-2px);
      outline:none;
    }
    .hero-panel{
      border:1px solid rgba(255,255,255,.18);
      background:rgba(255,255,255,.11);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:0 24px 80px rgba(0,0,0,.28);
      backdrop-filter:blur(16px);
    }
    .notice-card{
      background:rgba(255,255,255,.95);
      color:var(--text);
      border-radius:24px;
      padding:26px;
      box-shadow:var(--shadow);
    }
    .notice-card h2{
      margin:0 0 12px;
      font-size:26px;
      letter-spacing:-.03em;
    }
    .notice-card p{
      margin:0;
      color:#596276;
    }
    .verify-list{
      display:grid;
      gap:12px;
      margin:22px 0 0;
      padding:0;
      list-style:none;
    }
    .verify-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:13px;
      border:1px solid var(--border);
      border-radius:16px;
      background:#fafbfe;
      color:#344054;
      font-weight:700;
    }
    .check{
      width:22px;
      height:22px;
      border-radius:50%;
      background:rgba(18,183,106,.12);
      color:#087443;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      font-size:13px;
      margin-top:2px;
    }
    .section{
      padding:86px 0;
      position:relative;
    }
    .section-tight{padding:64px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      margin:0 0 10px;
      color:var(--primary);
      font-weight:900;
      letter-spacing:.08em;
      font-size:13px;
    }
    .section-title{
      margin:0;
      font-size:clamp(30px,3.2vw,46px);
      line-height:1.15;
      letter-spacing:-.04em;
      color:#111827;
    }
    .section-desc{
      margin:12px 0 0;
      max-width:700px;
      color:var(--muted);
      font-size:17px;
    }
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:22px;
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:24px;
    }
    .feature-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-soft);
      transition:var(--transition);
      position:relative;
      overflow:hidden;
    }
    .feature-card:before{
      content:"";
      position:absolute;
      inset:0 0 auto;
      height:4px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
      opacity:.85;
    }
    .feature-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow);
    }
    .icon-box{
      width:52px;
      height:52px;
      border-radius:18px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 24px rgba(180,35,90,.22);
      font-weight:900;
      margin-bottom:18px;
    }
    .feature-card h3{
      margin:0 0 10px;
      font-size:22px;
      letter-spacing:-.02em;
    }
    .feature-card p{
      margin:0;
      color:var(--muted);
    }
    .media-section{
      background:var(--bg);
      color:#fff;
      overflow:hidden;
    }
    .media-section .section-title{color:#fff}
    .media-section .section-desc{color:var(--muted-light)}
    .media-card{
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid var(--border-dark);
      background:#151b2c;
      box-shadow:0 18px 60px rgba(0,0,0,.25);
      transition:var(--transition);
    }
    .media-card:hover{
      transform:translateY(-5px);
      border-color:rgba(245,184,75,.45);
    }
    .media-thumb{
      position:relative;
      aspect-ratio:16/10;
      overflow:hidden;
      background:#111827;
    }
    .media-thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .35s ease;
    }
    .media-card:hover .media-thumb img{transform:scale(1.05)}
    .media-thumb:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.66));
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(180,35,90,.1);
      color:var(--primary);
      font-size:13px;
      font-weight:900;
    }
    .media-badge{
      position:absolute;
      left:16px;
      bottom:16px;
      z-index:1;
      background:rgba(255,255,255,.92);
      color:var(--primary);
    }
    .media-body{
      padding:22px;
    }
    .media-body h3{
      margin:0 0 10px;
      font-size:21px;
      color:#fff;
    }
    .media-body p{
      margin:0;
      color:#c8cedd;
    }
    .split{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:42px;
      align-items:center;
    }
    .image-stack{
      position:relative;
      min-height:430px;
    }
    .image-stack img{
      position:absolute;
      width:76%;
      border-radius:30px;
      object-fit:cover;
      box-shadow:var(--shadow);
      border:8px solid #fff;
    }
    .image-stack img:first-child{
      left:0;
      top:0;
      height:315px;
    }
    .image-stack img:last-child{
      right:0;
      bottom:0;
      height:270px;
    }
    .info-list{
      margin:28px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:14px;
    }
    .info-list li{
      display:flex;
      gap:13px;
      padding:16px;
      background:#fff;
      border:1px solid var(--border);
      border-radius:18px;
      box-shadow:0 8px 22px rgba(15,23,42,.05);
    }
    .info-list strong{display:block;margin-bottom:3px}
    .info-list span{color:var(--muted)}
    .latest{
      background:linear-gradient(180deg,#f7f8fc,#fff);
    }
    .post-list{
      display:grid;
      gap:14px;
    }
    .post-item{
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      align-items:center;
      padding:20px;
      border:1px solid var(--border);
      border-radius:22px;
      background:#fff;
      box-shadow:0 8px 28px rgba(15,23,42,.05);
      transition:var(--transition);
    }
    .post-item:hover{
      transform:translateY(-3px);
      border-color:rgba(180,35,90,.24);
      box-shadow:var(--shadow-soft);
    }
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      margin-bottom:8px;
      color:var(--muted);
      font-size:14px;
    }
    .post-title{
      margin:0;
      font-size:20px;
      letter-spacing:-.02em;
      color:#111827;
    }
    .post-summary{
      margin:8px 0 0;
      color:var(--muted);
    }
    .post-arrow{
      width:42px;
      height:42px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:#f4f5f8;
      color:var(--primary);
      font-weight:900;
      transition:var(--transition);
    }
    .post-item:hover .post-arrow{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      transform:translateX(3px);
    }
    .empty{
      padding:28px;
      border-radius:22px;
      border:1px dashed #ccd3df;
      background:#fff;
      color:var(--muted);
      text-align:center;
      font-weight:800;
    }
    .proof-band{
      background:
        linear-gradient(135deg,rgba(180,35,90,.92),rgba(124,45,107,.92)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      color:#fff;
    }
    .proof-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .proof-item{
      padding:24px;
      border:1px solid rgba(255,255,255,.18);
      border-radius:22px;
      background:rgba(255,255,255,.1);
      backdrop-filter:blur(8px);
    }
    .proof-num{
      display:block;
      font-size:34px;
      line-height:1;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .proof-item span:last-child{
      display:block;
      margin-top:10px;
      color:#f3dbe5;
      font-weight:700;
    }
    .faq-wrap{
      display:grid;
      grid-template-columns:.72fr 1.28fr;
      gap:34px;
      align-items:start;
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    details{
      background:#fff;
      border:1px solid var(--border);
      border-radius:20px;
      box-shadow:0 8px 24px rgba(15,23,42,.05);
      overflow:hidden;
    }
    summary{
      list-style:none;
      cursor:pointer;
      padding:20px 22px;
      font-weight:900;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:#111827;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:#f2f4f7;
      color:var(--primary);
      flex:0 0 auto;
      transition:var(--transition);
    }
    details[open] summary:after{
      content:"−";
      color:#fff;
      background:var(--primary);
      transform:rotate(180deg);
    }
    details p{
      margin:0;
      padding:0 22px 22px;
      color:var(--muted);
    }
    .cta{
      padding:0 0 88px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      background:
        linear-gradient(120deg,rgba(8,12,24,.92),rgba(60,22,66,.82)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color:#fff;
      padding:54px;
      box-shadow:0 24px 70px rgba(15,23,42,.18);
    }
    .cta-box:before{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      border-radius:50%;
      right:-80px;
      top:-90px;
      background:rgba(245,184,75,.2);
      filter:blur(4px);
    }
    .cta-content{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
    }
    .cta h2{
      margin:0;
      font-size:clamp(28px,3vw,44px);
      line-height:1.16;
      letter-spacing:-.04em;
    }
    .cta p{
      margin:14px 0 0;
      color:#dce2ee;
      max-width:720px;
    }
    .site-footer{
      background:#080c18;
      color:#d9deeb;
      padding:52px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{
      box-shadow:none;
    }
    .footer-desc{
      margin:0;
      color:#aeb7c9;
      max-width:520px;
    }
    .footer-col h3{
      margin:0 0 14px;
      color:#fff;
      font-size:16px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#aeb7c9;
      transition:var(--transition);
    }
    .footer-links a:hover,.footer-links a:focus{
      color:#fff;
      outline:none;
      transform:translateX(2px);
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:24px;
      color:#8f9bb1;
      font-size:14px;
    }
    @media (max-width:1024px){
      .hero-inner,.split,.faq-wrap{
        grid-template-columns:1fr;
      }
      .hero{
        min-height:auto;
      }
      .hero-panel{
        max-width:720px;
      }
      .grid-3{
        grid-template-columns:repeat(2,1fr);
      }
      .proof-grid{
        grid-template-columns:repeat(2,1fr);
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
    }
    @media (max-width:768px){
      :root{--header-h:auto}
      .container{width:min(100% - 28px,var(--container))}
      .nav-wrap{
        min-height:70px;
        flex-wrap:wrap;
        gap:10px;
        padding:12px 0;
      }
      .brand span:last-child{max-width:230px}
      .menu-toggle{display:block}
      .nav{
        order:3;
        width:100%;
        display:none;
        border-radius:18px;
        flex-direction:column;
        align-items:stretch;
        padding:10px;
      }
      .nav.open{display:flex}
      .nav a{
        text-align:center;
        border-radius:14px;
      }
      .header-action .age-chip{display:none}
      .hero-inner{
        padding:70px 0 52px;
      }
      .hero-lead{font-size:17px}
      .section{
        padding:64px 0;
      }
      .section-head{
        display:block;
      }
      .grid-3,.grid-2{
        grid-template-columns:1fr;
      }
      .image-stack{
        min-height:auto;
        display:grid;
        gap:16px;
      }
      .image-stack img{
        position:static;
        width:100%;
        height:auto!important;
      }
      .post-item{
        grid-template-columns:1fr;
      }
      .post-arrow{
        justify-self:start;
      }
      .cta-content{
        grid-template-columns:1fr;
      }
      .cta-box{
        padding:34px 24px;
        border-radius:26px;
      }
      .footer-grid{
        grid-template-columns:1fr;
      }
    }
    @media (max-width:520px){
      h1{
        font-size:38px;
      }
      .hero-actions{
        flex-direction:column;
      }
      .btn{
        width:100%;
      }
      .notice-card,.feature-card{
        padding:22px;
        border-radius:22px;
      }
      .proof-grid{
        grid-template-columns:1fr;
      }
      .proof-num{
        font-size:30px;
      }
      .footer-bottom{
        display:block;
      }
      .footer-bottom span{
        display:block;
        margin-top:8px;
      }
    }

/* roulang page: article */
:root{
      --bg:#0b0f19;
      --bg-soft:#111827;
      --surface:#ffffff;
      --surface-soft:#f6f7fb;
      --surface-dark:#151b2c;
      --text:#182033;
      --text-light:#f9fafb;
      --muted:#667085;
      --muted-light:#b8c0d4;
      --primary:#b4235a;
      --primary-2:#7c2d6b;
      --accent:#f5b84b;
      --success:#12b76a;
      --border:#e6e9f0;
      --border-dark:rgba(255,255,255,.14);
      --shadow:0 18px 50px rgba(15,23,42,.12);
      --shadow-soft:0 10px 28px rgba(15,23,42,.08);
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --header-h:76px;
      --transition:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:linear-gradient(180deg,#fff 0%,#f7f8fc 46%,#fff 100%);
      line-height:1.72;
      min-width:320px;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(180,35,90,.18);color:#111827}
    .container{
      width:min(var(--container),calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(230,233,240,.78);
    }
    .nav-wrap{
      height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:-.02em;
      color:#121827;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      display:grid;
      place-items:center;
      color:#fff;
      box-shadow:0 12px 26px rgba(180,35,90,.26);
      flex:0 0 auto;
      font-weight:900;
    }
    .brand span:last-child{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:330px;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      background:#f3f5f9;
      border:1px solid var(--border);
      border-radius:999px;
    }
    .nav a{
      padding:10px 18px;
      border-radius:999px;
      color:#4b5565;
      font-weight:700;
      transition:var(--transition);
    }
    .nav a:hover,.nav a:focus{
      color:var(--primary);
      background:#fff;
      outline:none;
    }
    .nav a.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 10px 20px rgba(124,45,107,.2);
    }
    .header-action{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .age-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border:1px solid var(--border);
      border-radius:999px;
      background:#fff;
      color:#344054;
      font-weight:800;
      white-space:nowrap;
      box-shadow:0 8px 20px rgba(15,23,42,.04);
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:none;
      border-radius:14px;
      background:#f2f4f7;
      color:#111827;
      cursor:pointer;
      transition:var(--transition);
    }
    .menu-toggle:hover,.menu-toggle:focus{
      background:#e9edf5;
      outline:3px solid rgba(180,35,90,.16);
    }
    .menu-toggle span{
      display:block;
      width:20px;
      height:2px;
      margin:5px auto;
      background:currentColor;
      border-radius:2px;
    }

    .article-hero{
      position:relative;
      overflow:hidden;
      color:var(--text-light);
      background:
        linear-gradient(115deg,rgba(8,12,24,.94) 0%,rgba(31,18,42,.84) 52%,rgba(180,35,90,.40) 100%),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    }
    .article-hero:after{
      content:"";
      position:absolute;
      inset:auto -10% -42% -10%;
      height:360px;
      background:radial-gradient(circle at 50% 0,rgba(245,184,75,.22),transparent 64%);
      pointer-events:none;
    }
    .article-hero-inner{
      position:relative;
      z-index:1;
      padding:72px 0 62px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 360px;
      gap:44px;
      align-items:end;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      gap:9px;
      flex-wrap:wrap;
      margin:0 0 22px;
      padding:0;
      color:#d9deeb;
      font-size:14px;
      font-weight:700;
    }
    .breadcrumb a{
      color:#fff;
      transition:var(--transition);
    }
    .breadcrumb a:hover,.breadcrumb a:focus{
      color:var(--accent);
      outline:none;
    }
    .breadcrumb span{
      color:#b8c0d4;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 13px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.22);
      background:rgba(255,255,255,.1);
      color:#fff;
      font-weight:800;
      backdrop-filter:blur(8px);
      margin-bottom:18px;
    }
    .eyebrow:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
    }
    h1{
      margin:0;
      max-width:850px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.12;
      letter-spacing:-.045em;
      font-weight:950;
    }
    .article-summary{
      margin:22px 0 0;
      max-width:820px;
      color:#d9deeb;
      font-size:18px;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 13px;
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      color:#fff;
      background:rgba(255,255,255,.09);
      backdrop-filter:blur(8px);
      font-weight:800;
      font-size:14px;
    }
    .hero-cover{
      padding:14px;
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
      box-shadow:0 24px 80px rgba(0,0,0,.28);
      backdrop-filter:blur(14px);
    }
    .hero-cover img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      border-radius:22px;
    }

    main{overflow:hidden}
    .section{
      padding:76px 0;
    }
    .section-tight{
      padding:48px 0;
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:26px;
    }
    .section-title{
      margin:0;
      font-size:clamp(26px,3vw,40px);
      line-height:1.18;
      letter-spacing:-.03em;
      font-weight:950;
      color:#111827;
    }
    .section-desc{
      margin:10px 0 0;
      color:var(--muted);
      max-width:680px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:#fff1f6;
      color:var(--primary);
      border:1px solid rgba(180,35,90,.14);
      font-weight:900;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 22px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:900;
      cursor:pointer;
      transition:var(--transition);
      text-align:center;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 16px 34px rgba(180,35,90,.28);
    }
    .btn-primary:hover,.btn-primary:focus{
      transform:translateY(-2px);
      box-shadow:0 20px 42px rgba(180,35,90,.36);
      outline:none;
      color:#fff;
    }
    .btn-light{
      color:#111827;
      background:#fff;
      border-color:var(--border);
      box-shadow:0 12px 26px rgba(15,23,42,.08);
    }
    .btn-light:hover,.btn-light:focus{
      transform:translateY(-2px);
      color:var(--primary);
      outline:none;
    }
    .layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:34px;
      align-items:start;
    }
    .article-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .article-cover{
      position:relative;
      overflow:hidden;
      background:#111827;
    }
    .article-cover img{
      width:100%;
      aspect-ratio:16/7;
      object-fit:cover;
      transition:transform .45s ease;
    }
    .article-card:hover .article-cover img{transform:scale(1.025)}
    .article-cover:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 45%,rgba(11,15,25,.48));
      pointer-events:none;
    }
    .article-body{
      padding:34px;
    }
    .cms-content{
      color:#263043;
      font-size:17px;
      line-height:1.9;
    }
    .cms-content h2,.cms-content h3,.cms-content h4{
      color:#111827;
      letter-spacing:-.02em;
      line-height:1.25;
      margin:32px 0 14px;
      font-weight:950;
    }
    .cms-content h2{font-size:30px}
    .cms-content h3{font-size:24px}
    .cms-content h4{font-size:20px}
    .cms-content p{margin:0 0 18px}
    .cms-content a{
      color:var(--primary);
      font-weight:800;
      border-bottom:1px solid rgba(180,35,90,.22);
      transition:var(--transition);
    }
    .cms-content a:hover,.cms-content a:focus{
      color:var(--primary-2);
      border-bottom-color:var(--primary-2);
      outline:none;
    }
    .cms-content ul,.cms-content ol{
      margin:18px 0 22px;
      padding-left:1.35em;
    }
    .cms-content li{margin:9px 0}
    .cms-content blockquote{
      margin:28px 0;
      padding:22px 24px;
      border-left:5px solid var(--primary);
      border-radius:0 18px 18px 0;
      background:#fff6fa;
      color:#3f2a34;
      font-weight:700;
    }
    .cms-content img{
      border-radius:22px;
      margin:26px auto;
      box-shadow:var(--shadow-soft);
    }
    .not-found{
      padding:44px 34px;
      text-align:center;
      border:1px dashed rgba(180,35,90,.35);
      border-radius:24px;
      background:#fff8fb;
    }
    .not-found h2{
      margin:0 0 12px;
      color:#111827;
      font-size:30px;
      font-weight:950;
    }
    .not-found p{
      margin:0 0 24px;
      color:var(--muted);
    }

    .sidebar{
      position:sticky;
      top:calc(var(--header-h) + 22px);
      display:grid;
      gap:18px;
    }
    .side-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow-soft);
    }
    .side-card.dark{
      color:#fff;
      background:
        linear-gradient(135deg,rgba(21,27,44,.96),rgba(124,45,107,.92)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      border-color:rgba(255,255,255,.12);
    }
    .side-card h2,.side-card h3{
      margin:0 0 14px;
      font-size:20px;
      line-height:1.28;
      font-weight:950;
      letter-spacing:-.02em;
    }
    .side-card p{
      margin:0;
      color:var(--muted);
    }
    .side-card.dark p{color:#e4e8f3}
    .safe-list{
      display:grid;
      gap:12px;
      margin:16px 0 0;
      padding:0;
      list-style:none;
    }
    .safe-list li{
      display:flex;
      gap:10px;
      color:#344054;
      font-weight:700;
    }
    .safe-list li:before{
      content:"";
      width:9px;
      height:9px;
      flex:0 0 auto;
      margin-top:10px;
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--accent));
    }
    .toc-links{
      display:grid;
      gap:10px;
      margin-top:14px;
    }
    .toc-links a{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      padding:12px 14px;
      border-radius:15px;
      background:#f6f7fb;
      color:#344054;
      font-weight:800;
      transition:var(--transition);
    }
    .toc-links a:hover,.toc-links a:focus{
      background:#fff1f6;
      color:var(--primary);
      transform:translateX(3px);
      outline:none;
    }
    .mini-form{
      display:flex;
      gap:10px;
      margin-top:16px;
    }
    .mini-form input{
      min-width:0;
      flex:1;
      height:46px;
      border:1px solid var(--border);
      border-radius:999px;
      padding:0 15px;
      color:#111827;
      background:#fff;
      transition:var(--transition);
    }
    .mini-form input:focus{
      border-color:rgba(180,35,90,.45);
      box-shadow:0 0 0 4px rgba(180,35,90,.12);
      outline:none;
    }
    .mini-form button{
      border:none;
      height:46px;
      padding:0 17px;
      border-radius:999px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      font-weight:900;
      cursor:pointer;
      transition:var(--transition);
    }
    .mini-form button:hover,.mini-form button:focus{
      transform:translateY(-1px);
      outline:none;
      box-shadow:0 12px 24px rgba(180,35,90,.25);
    }

    .info-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .info-card{
      padding:24px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-soft);
      transition:var(--transition);
    }
    .info-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
    }
    .info-icon{
      width:46px;
      height:46px;
      display:grid;
      place-items:center;
      border-radius:16px;
      color:#fff;
      font-weight:950;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 24px rgba(180,35,90,.22);
      margin-bottom:16px;
    }
    .info-card h3{
      margin:0 0 10px;
      font-size:20px;
      font-weight:950;
      color:#111827;
    }
    .info-card p{
      margin:0;
      color:var(--muted);
    }

    .related-wrap{
      background:var(--bg);
      color:#fff;
      position:relative;
      overflow:hidden;
    }
    .related-wrap:before{
      content:"";
      position:absolute;
      width:520px;
      height:520px;
      right:-180px;
      top:-220px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(180,35,90,.34),transparent 66%);
    }
    .related-wrap .section-title{color:#fff}
    .related-wrap .section-desc{color:#c8cedd}
    .related-grid{
      position:relative;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .related-card{
      overflow:hidden;
      border-radius:24px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.13);
      box-shadow:0 18px 48px rgba(0,0,0,.18);
      transition:var(--transition);
    }
    .related-card:hover{
      transform:translateY(-5px);
      background:rgba(255,255,255,.12);
    }
    .related-card img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }
    .related-card div{padding:20px}
    .related-card h3{
      margin:0 0 10px;
      font-size:19px;
      font-weight:950;
      color:#fff;
    }
    .related-card p{
      margin:0;
      color:#c8cedd;
      font-size:15px;
    }

    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border:1px solid var(--border);
      border-radius:22px;
      background:#fff;
      box-shadow:0 10px 24px rgba(15,23,42,.05);
      overflow:hidden;
    }
    .faq-item summary{
      cursor:pointer;
      list-style:none;
      padding:20px 22px;
      font-weight:950;
      color:#111827;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:30px;
      height:30px;
      flex:0 0 auto;
      display:grid;
      place-items:center;
      border-radius:50%;
      color:var(--primary);
      background:#fff1f6;
      transition:var(--transition);
    }
    .faq-item[open] summary:after{
      content:"−";
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
    }
    .faq-item p{
      margin:0;
      padding:0 22px 22px;
      color:var(--muted);
    }

    .cta{
      position:relative;
      overflow:hidden;
      padding:44px;
      border-radius:var(--radius-lg);
      color:#fff;
      background:
        linear-gradient(135deg,rgba(180,35,90,.94),rgba(124,45,107,.93)),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      box-shadow:0 22px 60px rgba(124,45,107,.25);
    }
    .cta:after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      border-radius:50%;
      right:-80px;
      bottom:-120px;
      background:rgba(245,184,75,.22);
    }
    .cta-content{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .cta h2{
      margin:0 0 10px;
      font-size:clamp(26px,3vw,40px);
      font-weight:950;
      letter-spacing:-.03em;
    }
    .cta p{
      margin:0;
      color:#ffeaf2;
      max-width:710px;
    }

    .site-footer{
      padding:58px 0 26px;
      background:#090d16;
      color:#fff;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .7fr .7fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:950;
      font-size:18px;
      margin-bottom:14px;
    }
    .footer-desc{
      margin:0;
      max-width:560px;
      color:#b8c0d4;
    }
    .footer-col h3{
      margin:0 0 14px;
      font-size:16px;
      color:#fff;
      font-weight:950;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#b8c0d4;
      transition:var(--transition);
    }
    .footer-links a:hover,.footer-links a:focus{
      color:#fff;
      transform:translateX(3px);
      outline:none;
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      color:#8992a7;
      font-size:14px;
    }

    @media (max-width:1024px){
      .article-hero-inner,.layout{
        grid-template-columns:1fr;
      }
      .hero-cover{
        max-width:520px;
      }
      .sidebar{
        position:static;
        grid-template-columns:repeat(2,1fr);
      }
      .info-grid,.related-grid{
        grid-template-columns:repeat(2,1fr);
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
    }
    @media (max-width:768px){
      :root{--header-h:auto}
      .container{
        width:min(var(--container),calc(100% - 28px));
      }
      .nav-wrap{
        height:auto;
        min-height:70px;
        padding:12px 0;
        flex-wrap:wrap;
      }
      .brand span:last-child{
        max-width:210px;
      }
      .menu-toggle{
        display:block;
      }
      .header-action{
        margin-left:auto;
      }
      .age-chip{
        display:none;
      }
      .nav{
        order:3;
        display:none;
        width:100%;
        border-radius:20px;
        padding:8px;
        justify-content:stretch;
      }
      .nav.open{
        display:grid;
        grid-template-columns:1fr 1fr;
      }
      .nav a{
        text-align:center;
      }
      .article-hero-inner{
        padding:54px 0 48px;
        gap:28px;
      }
      .article-summary{
        font-size:16px;
      }
      .section{
        padding:58px 0;
      }
      .section-head{
        display:block;
      }
      .article-body{
        padding:24px;
      }
      .cms-content{
        font-size:16px;
      }
      .cms-content h2{font-size:25px}
      .cms-content h3{font-size:21px}
      .sidebar,.info-grid,.related-grid{
        grid-template-columns:1fr;
      }
      .cta{
        padding:32px 24px;
      }
      .cta-content{
        display:block;
      }
      .cta .btn{
        margin-top:22px;
      }
      .footer-grid{
        grid-template-columns:1fr;
      }
    }
    @media (max-width:520px){
      .brand-mark{
        width:38px;
        height:38px;
        border-radius:13px;
      }
      .brand span:last-child{
        max-width:176px;
        font-size:15px;
      }
      h1{
        font-size:32px;
      }
      .meta-row{
        gap:8px;
      }
      .meta-pill{
        width:100%;
        justify-content:center;
      }
      .article-cover img{
        aspect-ratio:4/3;
      }
      .article-body{
        padding:20px;
      }
      .mini-form{
        flex-direction:column;
      }
      .mini-form button{
        width:100%;
      }
      .footer-bottom{
        display:grid;
      }
    }

/* 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}