/* roulang page: index */
:root{
      --bg:#f7f3f5;
      --bg-soft:#fff8fa;
      --bg-card:#ffffff;
      --dark:#17111f;
      --dark-2:#120d18;
      --text:#241c27;
      --muted:#6b5e68;
      --weak:#958894;
      --primary:#c84c8b;
      --primary-2:#b83d7d;
      --accent:#ff8a65;
      --line:rgba(36,28,39,.08);
      --line-pink:rgba(200,76,139,.20);
      --white:#fff7fb;
      --radius-sm:14px;
      --radius-md:20px;
      --radius-lg:28px;
      --shadow:0 16px 48px rgba(36,28,39,.09);
      --shadow-hover:0 22px 58px rgba(36,28,39,.14);
      --container:1200px;
      --ease:all .24s ease;
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 5%, rgba(200,76,139,.10), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(255,138,101,.10), transparent 26%),
        var(--bg);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(200,76,139,.22);color:var(--text)}

    .container{
      width:min(100% - 48px,var(--container));
      margin-inline:auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,248,250,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(36,28,39,.07);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      font-weight:800;
      letter-spacing:-.02em;
      color:var(--dark);
      white-space:nowrap;
    }
    .logo-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      position:relative;
      box-shadow:0 12px 26px rgba(200,76,139,.26);
      flex:0 0 auto;
    }
    .logo-mark::before{
      content:"";
      position:absolute;
      width:0;height:0;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      border-left:13px solid #fff;
      left:16px;top:13px;
      filter:drop-shadow(0 2px 4px rgba(0,0,0,.16));
    }
    .logo-text{
      font-size:17px;
      line-height:1.2;
    }

    .desktop-nav{
      display:flex;
      align-items:center;
      gap:6px;
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:0 14px;
      color:var(--muted);
      font-size:15px;
      font-weight:650;
      border-radius:999px;
      transition:var(--ease);
    }
    .nav-link:hover,
    .nav-link.active{
      color:var(--primary);
      background:rgba(200,76,139,.08);
    }
    .nav-link:focus-visible,
    .btn:focus-visible,
    .menu-toggle:focus-visible,
    .faq-question:focus-visible{
      outline:3px solid rgba(200,76,139,.26);
      outline-offset:3px;
    }

    .header-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .menu-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:15px;
      border:1px solid var(--line);
      background:#fff;
      align-items:center;
      justify-content:center;
      transition:var(--ease);
    }
    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after{
      display:block;
      width:20px;
      height:2px;
      background:var(--dark);
      border-radius:99px;
      transition:var(--ease);
      content:"";
      position:relative;
    }
    .menu-toggle span::before{position:absolute;top:-7px}
    .menu-toggle span::after{position:absolute;top:7px}
    .menu-toggle.is-open span{background:transparent}
    .menu-toggle.is-open span::before{top:0;transform:rotate(45deg)}
    .menu-toggle.is-open span::after{top:0;transform:rotate(-45deg)}

    .mobile-nav{
      display:none;
      border-top:1px solid var(--line);
      padding:14px 0 18px;
    }
    .mobile-nav-panel{
      display:grid;
      gap:8px;
      padding:10px;
      border-radius:22px;
      background:#fff;
      box-shadow:var(--shadow);
    }
    .mobile-nav .nav-link{
      justify-content:flex-start;
      min-height:48px;
      padding:0 16px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:12px 22px;
      border-radius:999px;
      font-weight:750;
      line-height:1;
      transition:var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(200,76,139,.24);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(200,76,139,.32)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{
      color:var(--primary);
      background:rgba(200,76,139,.08);
      border:1px solid rgba(200,76,139,.22);
    }
    .btn-secondary:hover{transform:translateY(-2px);background:rgba(200,76,139,.12);border-color:rgba(200,76,139,.35)}
    .btn-dark{
      color:var(--white);
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
    }
    .btn-dark:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}

    main{overflow:hidden}
    .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{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-size:13px;
      font-weight:800;
      letter-spacing:.04em;
      margin-bottom:10px;
    }
    .section-kicker::before{
      content:"";
      width:22px;
      height:2px;
      border-radius:99px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
    }
    .section-title{
      font-size:clamp(28px,3vw,42px);
      line-height:1.25;
      letter-spacing:-.03em;
      color:var(--dark);
    }
    .section-desc{
      max-width:620px;
      color:var(--muted);
      font-size:16px;
      margin-top:12px;
    }

    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(200,76,139,.10);
      color:var(--primary);
      font-size:12px;
      font-weight:800;
      line-height:1;
    }
    .badge.orange{background:rgba(255,138,101,.12);color:#d76545}
    .badge.dark{background:rgba(255,255,255,.12);color:var(--white);border:1px solid rgba(255,255,255,.12)}

    .hero{
      padding:86px 0 72px;
      background:
        linear-gradient(135deg,rgba(255,248,250,.86),rgba(247,243,245,.72)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position:relative;
      isolation:isolate;
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:auto -8% -26% auto;
      width:430px;
      height:430px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(200,76,139,.16),transparent 68%);
      z-index:-1;
    }
    .hero-layout{
      display:grid;
      grid-template-columns:minmax(0,1.03fr) minmax(360px,.82fr);
      gap:48px;
      align-items:center;
    }
    .hero-copy{
      padding:18px 0;
    }
    .hero-note{
      display:inline-flex;
      align-items:center;
      gap:10px;
      margin-bottom:22px;
      padding:9px 14px;
      border:1px solid rgba(200,76,139,.16);
      background:rgba(255,255,255,.66);
      border-radius:999px;
      color:var(--muted);
      font-weight:700;
      box-shadow:0 8px 24px rgba(36,28,39,.05);
    }
    .pulse-dot{
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 7px rgba(255,138,101,.16);
    }
    h1{
      font-size:clamp(40px,5.2vw,68px);
      line-height:1.12;
      letter-spacing:-.055em;
      color:var(--dark);
      max-width:780px;
    }
    .hero-subtitle{
      margin-top:24px;
      max-width:680px;
      color:var(--muted);
      font-size:18px;
      line-height:1.85;
    }
    .hero-actions{
      margin-top:34px;
      display:flex;
      gap:14px;
      flex-wrap:wrap;
    }
    .trust-strip{
      margin-top:34px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .trust-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(36,28,39,.07);
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .trust-item i{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
    }

    .hero-visual{
      position:relative;
      min-height:520px;
      border-radius:34px;
      padding:20px;
      background:linear-gradient(145deg,rgba(23,17,31,.95),rgba(45,28,46,.94));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 28px 78px rgba(23,17,31,.24);
      overflow:hidden;
    }
    .hero-visual::before{
      content:"";
      position:absolute;
      inset:-40% -20% auto auto;
      width:360px;
      height:360px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(200,76,139,.34),transparent 70%);
    }
    .visual-top{
      position:relative;
      display:flex;
      justify-content:space-between;
      align-items:center;
      color:var(--white);
      margin-bottom:18px;
      z-index:1;
    }
    .visual-top strong{font-size:18px}
    .visual-card{
      position:relative;
      z-index:1;
      border-radius:26px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.07);
    }
    .visual-card img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
      opacity:.86;
    }
    .visual-card-body{
      padding:20px;
      color:var(--white);
    }
    .visual-card-body h2{
      font-size:22px;
      line-height:1.35;
      margin:12px 0 8px;
    }
    .visual-card-body p{
      color:#d9c9d3;
      font-size:14px;
    }
    .mini-feed{
      position:relative;
      z-index:1;
      display:grid;
      gap:12px;
      margin-top:16px;
    }
    .mini-item{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:14px 16px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.10);
      color:#d9c9d3;
    }
    .mini-item span:first-child{
      color:var(--white);
      font-weight:750;
    }

    .feature-wrap{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:38px;
      align-items:start;
    }
    .feature-intro{
      position:sticky;
      top:104px;
      padding:30px;
      border-radius:var(--radius-lg);
      background:var(--dark);
      color:var(--white);
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .feature-intro::after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      border-radius:50%;
      right:-90px;bottom:-100px;
      background:radial-gradient(circle,rgba(200,76,139,.36),transparent 70%);
    }
    .feature-intro p{
      color:#d9c9d3;
      margin-top:16px;
      position:relative;
      z-index:1;
    }
    .feature-intro img{
      margin-top:26px;
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      border-radius:22px;
      border:1px solid rgba(255,255,255,.12);
      position:relative;
      z-index:1;
    }
    .feature-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .feature-card,
    .guide-step,
    .info-card,
    .proof-card,
    .faq-item{
      background:rgba(255,255,255,.76);
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      box-shadow:0 12px 36px rgba(36,28,39,.06);
      transition:var(--ease);
    }
    .feature-card{
      padding:26px;
      min-height:214px;
    }
    .feature-card:hover,
    .info-card:hover,
    .proof-card:hover{
      transform:translateY(-4px);
      border-color:var(--line-pink);
      box-shadow:var(--shadow-hover);
    }
    .icon-box{
      width:46px;
      height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,rgba(200,76,139,.14),rgba(255,138,101,.13));
      color:var(--primary);
      font-weight:900;
      margin-bottom:18px;
    }
    .feature-card h3{
      font-size:20px;
      margin-bottom:10px;
      color:var(--dark);
    }
    .feature-card p{
      color:var(--muted);
      font-size:15px;
    }

    .guide{
      background:linear-gradient(180deg,rgba(255,248,250,.70),rgba(247,243,245,.92));
    }
    .timeline{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:18px;
      counter-reset:step;
      position:relative;
    }
    .timeline::before{
      content:"";
      position:absolute;
      left:8%;
      right:8%;
      top:43px;
      border-top:2px dashed rgba(200,76,139,.22);
    }
    .guide-step{
      position:relative;
      z-index:1;
      padding:26px;
      overflow:hidden;
    }
    .step-number{
      width:42px;
      height:42px;
      border-radius:50%;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 10px 24px rgba(200,76,139,.23);
      margin-bottom:18px;
    }
    .guide-step h3{
      font-size:19px;
      margin-bottom:8px;
      color:var(--dark);
    }
    .guide-step p{
      color:var(--muted);
      font-size:15px;
    }

    .showcase{
      padding:72px 0;
      background:var(--dark-2);
      color:var(--white);
      position:relative;
    }
    .showcase::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 18% 20%,rgba(200,76,139,.18),transparent 30%),
        radial-gradient(circle at 82% 70%,rgba(255,138,101,.14),transparent 28%);
      pointer-events:none;
    }
    .showcase-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:center;
    }
    .showcase-img{
      border-radius:30px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 28px 78px rgba(0,0,0,.28);
    }
    .showcase-img img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }
    .showcase-text h2{
      font-size:clamp(28px,3vw,42px);
      line-height:1.25;
      letter-spacing:-.03em;
      margin:14px 0;
    }
    .showcase-text p{
      color:#d9c9d3;
      margin-bottom:18px;
    }
    .check-list{
      display:grid;
      gap:12px;
      margin-top:22px;
    }
    .check-list li{
      list-style:none;
      display:flex;
      gap:10px;
      color:#eadde5;
    }
    .check-list li::before{
      content:"✓";
      flex:0 0 22px;
      width:22px;height:22px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(200,76,139,.22);
      color:#fff;
      font-size:13px;
      font-weight:900;
      margin-top:3px;
    }

    .updates-layout{
      display:grid;
      grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
      gap:20px;
      align-items:start;
    }
    .info-card{
      padding:24px;
      display:block;
      color:inherit;
      overflow:hidden;
    }
    .featured-info{
      min-height:100%;
      background:#fff;
    }
    .info-cover{
      border-radius:20px;
      overflow:hidden;
      margin:-4px -4px 20px;
      position:relative;
      background:#eee;
    }
    .info-cover img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }
    .info-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 45%,rgba(23,17,31,.54));
    }
    .info-title{
      font-size:22px;
      line-height:1.35;
      color:var(--dark);
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
      transition:var(--ease);
    }
    .featured-info .info-title{font-size:28px}
    .info-card:hover .info-title{color:var(--primary)}
    .info-summary{
      margin-top:12px;
      color:var(--muted);
      font-size:15px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .info-meta{
      margin-top:18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      color:var(--weak);
      font-size:13px;
      flex-wrap:wrap;
    }
    .read-link{
      color:var(--primary);
      font-weight:850;
      display:inline-flex;
      align-items:center;
      gap:6px;
      transition:var(--ease);
    }
    .read-link::after{
      content:"→";
      transition:var(--ease);
    }
    .info-card:hover .read-link::after{transform:translateX(4px)}
    .side-list{
      display:grid;
      gap:16px;
    }
    .side-list .info-card{
      display:grid;
      grid-template-columns:118px 1fr;
      gap:18px;
      align-items:center;
      padding:18px;
    }
    .side-thumb{
      border-radius:16px;
      overflow:hidden;
      background:#eee;
    }
    .side-thumb img{
      width:100%;
      aspect-ratio:1/1;
      object-fit:cover;
    }
    .empty-state{
      grid-column:1/-1;
      padding:36px;
      border:1px dashed rgba(200,76,139,.32);
      border-radius:24px;
      background:rgba(255,255,255,.78);
      text-align:center;
      color:var(--muted);
      box-shadow:var(--shadow);
    }
    .empty-icon{
      width:54px;
      height:54px;
      margin:0 auto 12px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:rgba(200,76,139,.10);
      color:var(--primary);
      font-size:24px;
      font-weight:900;
    }

    .safety-card{
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:28px;
      padding:34px;
      border-radius:32px;
      background:linear-gradient(135deg,var(--dark),#25162a);
      color:var(--white);
      box-shadow:0 28px 78px rgba(23,17,31,.20);
      overflow:hidden;
      position:relative;
    }
    .safety-card::after{
      content:"";
      position:absolute;
      width:330px;height:330px;
      border-radius:50%;
      right:-120px;top:-120px;
      background:radial-gradient(circle,rgba(255,138,101,.20),transparent 70%);
    }
    .safety-card h2{
      font-size:clamp(28px,3vw,40px);
      line-height:1.25;
      letter-spacing:-.03em;
      margin:12px 0;
      position:relative;
      z-index:1;
    }
    .safety-card p{
      color:#d9c9d3;
      position:relative;
      z-index:1;
    }
    .safety-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
      position:relative;
      z-index:1;
    }
    .safety-item{
      padding:18px;
      border-radius:20px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.11);
    }
    .safety-item strong{
      display:block;
      margin-bottom:6px;
      color:var(--white);
    }
    .safety-item span{
      color:#d9c9d3;
      font-size:14px;
    }

    .proof-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr .95fr;
      gap:18px;
    }
    .proof-card{
      padding:26px;
    }
    .proof-card.large{
      background:linear-gradient(135deg,#fff,#fff3f7);
    }
    .proof-number{
      font-size:38px;
      line-height:1;
      font-weight:900;
      letter-spacing:-.04em;
      color:var(--primary);
      margin-bottom:10px;
    }
    .proof-card h3{
      font-size:20px;
      margin-bottom:8px;
    }
    .proof-card p{
      color:var(--muted);
      font-size:15px;
    }

    .faq-wrap{
      display:grid;
      grid-template-columns:.76fr 1.24fr;
      gap:34px;
      align-items:start;
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      overflow:hidden;
      background:rgba(255,255,255,.78);
    }
    .faq-item.is-open{
      border-color:var(--line-pink);
      box-shadow:var(--shadow);
    }
    .faq-question{
      width:100%;
      min-height:58px;
      padding:18px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      text-align:left;
      color:var(--dark);
      font-weight:850;
    }
    .faq-icon{
      flex:0 0 28px;
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(200,76,139,.10);
      color:var(--primary);
      transition:var(--ease);
    }
    .faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
    }
    .faq-answer p{
      padding:0 22px 20px;
      color:var(--muted);
      font-size:15px;
    }

    .cta{
      padding:72px 0;
    }
    .cta-box{
      border-radius:34px;
      padding:42px;
      background:
        linear-gradient(135deg,rgba(23,17,31,.96),rgba(52,27,50,.94)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:var(--white);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
      overflow:hidden;
      position:relative;
      box-shadow:0 26px 72px rgba(23,17,31,.20);
    }
    .cta-box::after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      border-radius:50%;
      right:-70px;bottom:-110px;
      background:radial-gradient(circle,rgba(200,76,139,.38),transparent 70%);
    }
    .cta-copy{
      position:relative;
      z-index:1;
      max-width:710px;
    }
    .cta-copy h2{
      font-size:clamp(28px,3.2vw,44px);
      line-height:1.25;
      letter-spacing:-.03em;
      margin-bottom:12px;
    }
    .cta-copy p{color:#d9c9d3}
    .cta-actions{
      position:relative;
      z-index:1;
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }

    .site-footer{
      background:var(--dark-2);
      color:var(--white);
      padding:54px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:32px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer-brand .logo{color:var(--white)}
    .footer-brand p{
      color:#d9c9d3;
      margin-top:16px;
      max-width:520px;
      font-size:15px;
    }
    .footer-col h3{
      font-size:16px;
      margin-bottom:14px;
      color:var(--white);
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a,
    .footer-links span{
      color:#d9c9d3;
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .copyright{
      padding-top:22px;
      color:#b9aaba;
      font-size:13px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }

    @media (max-width:1024px){
      .container{width:min(100% - 40px,var(--container))}
      .desktop-nav{display:none}
      .menu-toggle{display:flex}
      .mobile-nav.is-open{display:block}
      .header-actions .btn{display:none}
      .hero-layout,
      .feature-wrap,
      .showcase-grid,
      .updates-layout,
      .safety-card,
      .faq-wrap{
        grid-template-columns:1fr;
      }
      .feature-intro{position:relative;top:auto}
      .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
      .timeline::before{display:none}
      .proof-grid{grid-template-columns:1fr 1fr}
      .proof-card.large{grid-column:1/-1}
      .hero-visual{min-height:auto}
    }

    @media (max-width:768px){
      .container{width:min(100% - 32px,var(--container))}
      .section{padding:62px 0}
      .hero{padding:62px 0 54px}
      .nav-wrap{min-height:68px}
      .logo-text{font-size:15px}
      .logo-mark{width:38px;height:38px;border-radius:14px}
      .hero-actions .btn,
      .cta-actions .btn{width:100%}
      .section-head{
        display:block;
        margin-bottom:26px;
      }
      .feature-grid,
      .timeline,
      .safety-grid,
      .proof-grid{
        grid-template-columns:1fr;
      }
      .side-list .info-card{
        grid-template-columns:92px 1fr;
        gap:14px;
      }
      .featured-info .info-title{font-size:24px}
      .safety-card,
      .cta-box{padding:28px}
      .cta-box{display:block}
      .cta-actions{margin-top:24px;justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr}
    }

    @media (max-width:520px){
      .container{width:min(100% - 24px,var(--container))}
      h1{font-size:36px}
      .hero-subtitle{font-size:16px}
      .hero-note{border-radius:18px;align-items:flex-start}
      .trust-strip{display:grid;grid-template-columns:1fr 1fr}
      .trust-item{border-radius:16px;justify-content:center;text-align:center}
      .hero-visual{border-radius:26px;padding:14px}
      .visual-card-body{padding:16px}
      .feature-card,
      .guide-step,
      .info-card,
      .proof-card{padding:20px}
      .side-list .info-card{
        grid-template-columns:1fr;
      }
      .side-thumb img{aspect-ratio:16/9}
      .faq-question{padding:16px 18px}
      .faq-answer p{padding:0 18px 18px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }

/* roulang page: article */
:root{
      --bg:#f7f3f5;
      --bg-soft:#fff8fa;
      --bg-card:#ffffff;
      --dark:#17111f;
      --dark-2:#120d18;
      --text:#241c27;
      --muted:#6b5e68;
      --weak:#958894;
      --primary:#c84c8b;
      --primary-2:#b83d7d;
      --accent:#ff8a65;
      --line:rgba(36,28,39,.08);
      --line-pink:rgba(200,76,139,.20);
      --white:#fff7fb;
      --radius-sm:14px;
      --radius-md:20px;
      --radius-lg:28px;
      --shadow:0 16px 48px rgba(36,28,39,.09);
      --shadow-hover:0 22px 58px rgba(36,28,39,.14);
      --container:1200px;
      --ease:all .24s 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:
        radial-gradient(circle at 10% 5%, rgba(200,76,139,.10), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(255,138,101,.10), transparent 26%),
        var(--bg);
      line-height:1.75;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(200,76,139,.20);color:var(--dark)}

    .container{
      width:min(100% - 48px,var(--container));
      margin-inline:auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,248,250,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(36,28,39,.07);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      font-weight:800;
      letter-spacing:-.02em;
      color:var(--dark);
      white-space:nowrap;
    }
    .logo:hover{color:var(--dark)}
    .logo-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      position:relative;
      box-shadow:0 12px 26px rgba(200,76,139,.26);
      flex:0 0 auto;
    }
    .logo-mark::before{
      content:"";
      position:absolute;
      width:0;height:0;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      border-left:13px solid #fff;
      left:16px;top:13px;
      filter:drop-shadow(0 2px 4px rgba(0,0,0,.16));
    }
    .logo-text{font-size:17px;line-height:1.2}
    .desktop-nav{
      display:flex;
      align-items:center;
      gap:6px;
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:0 14px;
      color:var(--muted);
      font-size:15px;
      font-weight:650;
      border-radius:999px;
      transition:var(--ease);
    }
    .nav-link:hover,
    .nav-link.active{
      color:var(--primary);
      background:rgba(200,76,139,.08);
    }
    .nav-link:focus-visible,
    .btn:focus-visible,
    .menu-toggle:focus-visible,
    .article-content a:focus-visible,
    .toc-card a:focus-visible{
      outline:3px solid rgba(200,76,139,.26);
      outline-offset:3px;
    }
    .header-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .menu-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:15px;
      border:1px solid var(--line);
      background:#fff;
      align-items:center;
      justify-content:center;
      transition:var(--ease);
    }
    .menu-toggle:hover{border-color:var(--line-pink);box-shadow:0 10px 26px rgba(36,28,39,.08)}
    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after{
      display:block;
      width:20px;
      height:2px;
      background:var(--dark);
      border-radius:99px;
      transition:var(--ease);
      content:"";
      position:relative;
    }
    .menu-toggle span::before{position:absolute;top:-7px}
    .menu-toggle span::after{position:absolute;top:7px}
    .menu-toggle.is-open span{background:transparent}
    .menu-toggle.is-open span::before{top:0;transform:rotate(45deg)}
    .menu-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
    .mobile-nav{
      display:none;
      border-top:1px solid var(--line);
      padding:14px 0 18px;
    }
    .mobile-nav-panel{
      display:grid;
      gap:8px;
      padding:10px;
      border-radius:22px;
      background:#fff;
      box-shadow:var(--shadow);
    }
    .mobile-nav .nav-link{
      justify-content:flex-start;
      min-height:48px;
      padding:0 16px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:12px 22px;
      border-radius:999px;
      font-weight:750;
      line-height:1;
      transition:var(--ease);
      white-space:nowrap;
      border:1px solid transparent;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(200,76,139,.24);
    }
    .btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 36px rgba(200,76,139,.32)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{
      color:var(--primary);
      background:rgba(200,76,139,.08);
      border-color:rgba(200,76,139,.22);
    }
    .btn-secondary:hover{color:var(--primary);transform:translateY(-2px);background:rgba(200,76,139,.12);border-color:rgba(200,76,139,.35)}
    .btn-dark{
      color:var(--white);
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
    }
    .btn-dark:hover{color:#fff;background:rgba(255,255,255,.18);transform:translateY(-2px)}
    .btn-linkline{
      min-height:auto;
      padding:0;
      border-radius:0;
      color:var(--primary);
      font-weight:800;
      background:transparent;
    }
    .btn-linkline::after{
      content:"→";
      display:inline-block;
      margin-left:6px;
      transition:var(--ease);
    }
    .btn-linkline:hover{color:var(--primary-2)}
    .btn-linkline:hover::after{transform:translateX(4px)}

    main{overflow:hidden}
    .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{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-size:13px;
      font-weight:800;
      letter-spacing:.04em;
      margin-bottom:10px;
    }
    .section-kicker::before{
      content:"";
      width:22px;
      height:2px;
      border-radius:99px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
    }
    .section-title{
      font-size:clamp(28px,3vw,42px);
      line-height:1.25;
      letter-spacing:-.03em;
      color:var(--dark);
      margin:0;
    }
    .section-desc{
      max-width:620px;
      color:var(--muted);
      font-size:16px;
      margin:12px 0 0;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      min-height:28px;
      padding:5px 11px;
      border-radius:999px;
      background:rgba(200,76,139,.10);
      color:var(--primary);
      font-size:12px;
      font-weight:800;
      line-height:1;
    }
    .badge-soft{
      background:rgba(255,138,101,.12);
      color:#d96242;
    }
    .card-surface{
      background:rgba(255,255,255,.82);
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      box-shadow:var(--shadow);
      transition:var(--ease);
    }
    .card-surface:hover{
      transform:translateY(-4px);
      border-color:var(--line-pink);
      box-shadow:var(--shadow-hover);
    }

    .article-hero{
      position:relative;
      padding:58px 0 42px;
      background:
        linear-gradient(135deg, rgba(23,17,31,.94), rgba(23,17,31,.82)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:var(--white);
      isolation:isolate;
    }
    .article-hero::after{
      content:"";
      position:absolute;
      inset:auto -10% -45% 45%;
      height:260px;
      background:radial-gradient(circle, rgba(255,138,101,.20), transparent 62%);
      z-index:-1;
      pointer-events:none;
    }
    .breadcrumb-line{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:28px;
      color:rgba(255,247,251,.70);
      font-size:14px;
    }
    .breadcrumb-line a{
      color:rgba(255,247,251,.82);
      transition:var(--ease);
    }
    .breadcrumb-line a:hover{color:#fff}
    .breadcrumb-line .sep{color:rgba(255,247,251,.36)}
    .article-hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) 390px;
      gap:44px;
      align-items:end;
    }
    .article-title{
      max-width:850px;
      margin:0;
      color:#fff;
      font-size:clamp(30px,4vw,44px);
      line-height:1.28;
      letter-spacing:-.035em;
      font-weight:850;
    }
    .article-summary{
      margin:18px 0 0;
      max-width:820px;
      color:rgba(255,247,251,.78);
      font-size:17px;
      line-height:1.85;
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:24px;
    }
    .meta-chip{
      display:inline-flex;
      align-items:center;
      gap:7px;
      min-height:34px;
      padding:7px 12px;
      border-radius:999px;
      color:rgba(255,247,251,.88);
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.12);
      font-size:13px;
      font-weight:700;
    }
    .hero-cover{
      overflow:hidden;
      border-radius:26px;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.08);
      box-shadow:0 24px 70px rgba(0,0,0,.26);
      position:relative;
    }
    .hero-cover::before{
      content:"文章阅读";
      position:absolute;
      left:16px;
      top:16px;
      z-index:2;
      min-height:30px;
      padding:6px 12px;
      border-radius:999px;
      background:rgba(18,13,24,.62);
      border:1px solid rgba(255,255,255,.14);
      color:#fff;
      font-size:12px;
      font-weight:800;
      backdrop-filter:blur(12px);
    }
    .hero-cover img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      filter:saturate(.96) contrast(1.02);
    }

    .article-shell{
      padding:72px 0 34px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 320px;
      gap:42px;
      align-items:start;
    }
    .article-main{
      min-width:0;
    }
    .article-content-wrap{
      padding:34px;
      border-radius:28px;
      background:rgba(255,255,255,.88);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }

    .article-content{
      color:var(--text);
      font-size:17px;
      line-height:1.9;
      overflow-wrap:anywhere;
    }
    .article-content > *:first-child{margin-top:0}
    .article-content > *:last-child{margin-bottom:0}
    .article-content p{margin:0 0 1.12em}
    .article-content h2{
      margin:2em 0 .82em;
      padding-left:15px;
      border-left:4px solid var(--primary);
      color:var(--dark);
      font-size:clamp(24px,2.5vw,31px);
      line-height:1.36;
      letter-spacing:-.02em;
      font-weight:850;
    }
    .article-content h3{
      margin:1.7em 0 .72em;
      color:var(--dark);
      font-size:22px;
      line-height:1.45;
      font-weight:820;
    }
    .article-content h4{
      margin:1.4em 0 .6em;
      color:var(--dark);
      font-size:19px;
      font-weight:800;
    }
    .article-content a{
      color:var(--primary);
      text-decoration:underline;
      text-decoration-thickness:1px;
      text-underline-offset:4px;
      transition:var(--ease);
    }
    .article-content a:hover{color:var(--primary-2)}
    .article-content ul,
    .article-content ol{
      margin:0 0 1.25em;
      padding-left:1.35em;
    }
    .article-content li{margin:.36em 0}
    .article-content blockquote{
      margin:1.6em 0;
      padding:18px 22px;
      border-left:4px solid var(--primary);
      border-radius:0 18px 18px 0;
      background:linear-gradient(135deg, rgba(200,76,139,.10), rgba(255,138,101,.08));
      color:#3b303e;
    }
    .article-content blockquote p:last-child{margin-bottom:0}
    .article-content img{
      width:100%;
      margin:1.6em 0;
      border-radius:22px;
      box-shadow:0 14px 34px rgba(36,28,39,.10);
    }
    .article-content figure{margin:1.8em 0}
    .article-content figcaption{
      margin-top:10px;
      color:var(--weak);
      font-size:14px;
      text-align:center;
    }
    .article-content table{
      width:100%;
      margin:1.5em 0;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:18px;
      background:#fff;
      box-shadow:0 12px 28px rgba(36,28,39,.06);
    }
    .article-content th,
    .article-content td{
      padding:13px 15px;
      border-bottom:1px solid var(--line);
      vertical-align:top;
    }
    .article-content tr:last-child th,
    .article-content tr:last-child td{border-bottom:0}
    .article-content th{
      color:var(--dark);
      background:rgba(200,76,139,.08);
      font-weight:800;
    }
    .article-content code{
      padding:.16em .42em;
      border-radius:8px;
      color:#9d2f68;
      background:rgba(200,76,139,.10);
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-size:.92em;
    }
    .article-content pre{
      padding:18px;
      border-radius:18px;
      background:var(--dark);
      color:var(--white);
      overflow:auto;
      line-height:1.7;
    }
    .article-content pre code{
      padding:0;
      background:transparent;
      color:inherit;
    }

    .not-found-box{
      padding:34px;
      border-radius:24px;
      background:linear-gradient(135deg, rgba(200,76,139,.08), rgba(255,138,101,.08));
      border:1px solid var(--line-pink);
      text-align:center;
    }
    .not-found-icon{
      width:58px;
      height:58px;
      margin:0 auto 14px;
      border-radius:20px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 16px 34px rgba(200,76,139,.22);
      position:relative;
    }
    .not-found-icon::before,
    .not-found-icon::after{
      content:"";
      position:absolute;
      left:17px;
      right:17px;
      height:3px;
      border-radius:999px;
      background:#fff;
    }
    .not-found-icon::before{top:22px;transform:rotate(45deg)}
    .not-found-icon::after{top:22px;transform:rotate(-45deg)}
    .not-found-box h2{
      margin:0 0 8px;
      color:var(--dark);
      font-size:26px;
      font-weight:850;
    }
    .not-found-box p{
      margin:0 0 22px;
      color:var(--muted);
    }

    .article-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:26px;
      padding-top:26px;
      border-top:1px solid var(--line);
    }

    .sidebar{
      position:sticky;
      top:98px;
      display:grid;
      gap:18px;
    }
    .toc-card,
    .side-card{
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.86);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .toc-card h2,
    .side-card h2{
      margin:0 0 14px;
      color:var(--dark);
      font-size:18px;
      line-height:1.4;
      font-weight:850;
    }
    .toc-list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .toc-list a{
      display:flex;
      align-items:center;
      gap:9px;
      min-height:40px;
      padding:9px 10px;
      border-radius:14px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      transition:var(--ease);
      background:rgba(247,243,245,.70);
    }
    .toc-list a::before{
      content:"";
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--primary);
      flex:0 0 auto;
    }
    .toc-list a:hover{
      color:var(--primary);
      background:rgba(200,76,139,.09);
      transform:translateX(3px);
    }
    .side-note{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }
    .side-list{
      display:grid;
      gap:12px;
      margin-top:14px;
    }
    .side-item{
      padding:14px;
      border-radius:18px;
      background:rgba(247,243,245,.78);
      border:1px solid rgba(36,28,39,.06);
      transition:var(--ease);
    }
    .side-item:hover{
      border-color:var(--line-pink);
      background:#fff;
      transform:translateY(-2px);
    }
    .side-item .badge{margin-bottom:9px}
    .side-item h3{
      margin:0 0 6px;
      color:var(--dark);
      font-size:15px;
      line-height:1.5;
      font-weight:820;
    }
    .side-item p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.65;
    }

    .reading-guide{
      padding:34px;
      border-radius:28px;
      background:linear-gradient(135deg, rgba(255,248,250,.96), rgba(255,255,255,.86));
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .guide-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
      margin-top:20px;
    }
    .guide-card{
      padding:18px;
      border-radius:20px;
      background:#fff;
      border:1px solid var(--line);
      transition:var(--ease);
    }
    .guide-card:hover{
      transform:translateY(-3px);
      border-color:var(--line-pink);
      box-shadow:0 14px 34px rgba(36,28,39,.08);
    }
    .guide-number{
      width:32px;
      height:32px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      margin-bottom:12px;
      border-radius:12px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      color:#fff;
      font-weight:850;
      box-shadow:0 10px 22px rgba(200,76,139,.20);
    }
    .guide-card h3{
      margin:0 0 8px;
      color:var(--dark);
      font-size:17px;
      font-weight:850;
    }
    .guide-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }

    .updates-section{
      padding:58px 0 84px;
    }
    .related-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:20px;
    }
    .related-feature{
      overflow:hidden;
      border-radius:28px;
      background:var(--dark);
      color:var(--white);
      min-height:320px;
      position:relative;
      box-shadow:var(--shadow);
    }
    .related-feature img{
      width:100%;
      height:100%;
      min-height:320px;
      object-fit:cover;
      opacity:.58;
    }
    .related-feature-content{
      position:absolute;
      inset:auto 0 0 0;
      padding:28px;
      background:linear-gradient(0deg, rgba(18,13,24,.88), transparent);
    }
    .related-feature h3{
      margin:12px 0 10px;
      font-size:26px;
      line-height:1.35;
      font-weight:850;
      color:#fff;
    }
    .related-feature p{
      margin:0 0 18px;
      color:rgba(255,247,251,.78);
    }
    .related-list{
      display:grid;
      gap:16px;
    }
    .related-card{
      padding:22px;
      border-radius:24px;
      background:rgba(255,255,255,.88);
      border:1px solid var(--line);
      box-shadow:0 12px 34px rgba(36,28,39,.07);
      transition:var(--ease);
    }
    .related-card:hover{
      transform:translateY(-4px);
      border-color:var(--line-pink);
      box-shadow:var(--shadow);
    }
    .related-card h3{
      margin:10px 0 8px;
      color:var(--dark);
      font-size:19px;
      line-height:1.45;
      font-weight:850;
    }
    .related-card p{
      margin:0 0 14px;
      color:var(--muted);
      font-size:14px;
    }
    .related-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
      color:var(--weak);
      font-size:13px;
      margin-bottom:8px;
    }

    .safe-banner{
      padding:42px;
      border-radius:30px;
      background:
        linear-gradient(135deg, rgba(23,17,31,.96), rgba(18,13,24,.92)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color:var(--white);
      overflow:hidden;
      position:relative;
    }
    .safe-banner::after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-80px;
      top:-110px;
      background:radial-gradient(circle, rgba(255,138,101,.26), transparent 65%);
      pointer-events:none;
    }
    .safe-banner h2{
      margin:0 0 12px;
      color:#fff;
      font-size:clamp(26px,3vw,38px);
      line-height:1.28;
      font-weight:850;
    }
    .safe-banner p{
      max-width:720px;
      margin:0;
      color:rgba(255,247,251,.76);
    }
    .safe-points{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:12px;
      margin-top:24px;
    }
    .safe-point{
      padding:14px 15px;
      border-radius:18px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.13);
      color:rgba(255,247,251,.88);
      font-size:14px;
      font-weight:700;
    }

    .site-footer{
      padding:62px 0 28px;
      color:rgba(255,247,251,.78);
      background:var(--dark-2);
      position:relative;
      overflow:hidden;
    }
    .site-footer::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 10% 0%, rgba(200,76,139,.20), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(255,138,101,.12), transparent 26%);
      pointer-events:none;
    }
    .site-footer .container{position:relative;z-index:1}
    .site-footer .logo{color:#fff}
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .7fr .9fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer-brand p{
      max-width:470px;
      margin:18px 0 0;
      color:rgba(255,247,251,.68);
    }
    .footer-col h3{
      margin:0 0 15px;
      color:#fff;
      font-size:16px;
      font-weight:850;
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a,
    .footer-links span{
      color:rgba(255,247,251,.66);
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-top:22px;
      color:rgba(255,247,251,.56);
      font-size:13px;
    }

    @media (max-width:1024px){
      .desktop-nav{display:none}
      .menu-toggle{display:inline-flex}
      .header-actions .btn-primary{display:none}
      .mobile-nav.is-open{display:block}
      .article-hero-grid{
        grid-template-columns:1fr;
        gap:28px;
      }
      .hero-cover{max-width:560px}
      .article-layout{
        grid-template-columns:1fr;
      }
      .sidebar{
        position:static;
        grid-template-columns:1fr 1fr;
      }
      .guide-grid{grid-template-columns:1fr}
      .related-grid{grid-template-columns:1fr}
      .safe-points{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
    }

    @media (max-width:768px){
      .container{width:min(100% - 32px,var(--container))}
      .nav-wrap{min-height:68px}
      .logo-text{font-size:15px;max-width:210px;white-space:normal}
      .logo-mark{width:38px;height:38px;border-radius:14px}
      .logo-mark::before{left:15px;top:12px}
      .section{padding:58px 0}
      .section-head{display:block;margin-bottom:24px}
      .article-hero{padding:38px 0 34px}
      .breadcrumb-line{margin-bottom:20px}
      .article-summary{font-size:15px}
      .article-meta{margin-top:18px}
      .article-shell{padding:46px 0 24px}
      .article-content-wrap{padding:24px;border-radius:24px}
      .article-content{font-size:16px;line-height:1.85}
      .article-content table{
        display:block;
        overflow-x:auto;
        white-space:nowrap;
      }
      .sidebar{grid-template-columns:1fr}
      .reading-guide{padding:24px;border-radius:24px}
      .related-feature-content{padding:22px}
      .safe-banner{padding:28px;border-radius:24px}
      .safe-points{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .copyright{flex-direction:column}
    }

    @media (max-width:520px){
      .container{width:min(100% - 24px,var(--container))}
      .btn{width:100%;padding-inline:18px}
      .article-actions{display:grid}
      .article-content-wrap{padding:20px;border-radius:22px}
      .article-content h2{padding-left:12px}
      .hero-cover img{aspect-ratio:16/10}
      .meta-chip{width:100%;justify-content:center}
      .related-card{padding:18px}
      .toc-card,.side-card{padding:20px}
    }

/* 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}