/* roulang page: index */
:root{
      --bg:#07111f;
      --bg-soft:#0b1728;
      --surface:#0f1d33;
      --surface-2:#13253f;
      --surface-3:#18304e;
      --line:rgba(255,255,255,.09);
      --line-strong:rgba(255,255,255,.16);
      --text:#ecf3ff;
      --muted:#a9b8d0;
      --muted-2:#7f8ea8;
      --brand:#ff4d7d;
      --brand-2:#ff7b59;
      --accent:#62d4ff;
      --good:#3ddc97;
      --warning:#ffd166;
      --shadow:0 24px 70px rgba(0,0,0,.34);
      --shadow-soft:0 14px 36px rgba(0,0,0,.18);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1200px;
      --gap:24px;
      --gap-sm:16px;
      --gap-xs:10px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      background:
        radial-gradient(circle at top, rgba(255,77,125,.12), transparent 34%),
        radial-gradient(circle at 85% 10%, rgba(98,212,255,.12), transparent 22%),
        linear-gradient(180deg, #07111f 0%, #09121d 45%, #07101a 100%);
      color:var(--text);
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    button{
      cursor:pointer;
      border:0;
      background:none;
      color:inherit;
    }
    ::selection{background:rgba(255,77,125,.28);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .skip-link{
      position:absolute;
      left:-999px;
      top:8px;
      z-index:9999;
      background:#fff;
      color:#111;
      padding:10px 14px;
      border-radius:999px;
      font-weight:700;
    }
    .skip-link:focus{left:16px}
    .site-header{
      position:sticky;
      top:0;
      z-index:60;
      backdrop-filter:blur(18px);
      background:rgba(7,17,31,.78);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:18px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      flex-shrink:0;
      font-weight:900;
      letter-spacing:.5px;
      color:#fff;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:
        linear-gradient(135deg, rgba(255,77,125,.9), rgba(255,123,89,.9));
      box-shadow:0 14px 28px rgba(255,77,125,.22);
      position:relative;
    }
    .brand-mark::after{
      content:"O";
      font-size:20px;
      line-height:1;
      color:#fff;
      transform:translateY(-1px);
    }
    .brand-text{
      font-size:1.02rem;
      line-height:1.1;
    }
    .brand-sub{
      display:block;
      margin-top:3px;
      font-size:.75rem;
      font-weight:600;
      color:var(--muted);
      letter-spacing:.2px;
    }
    .nav-wrap{
      display:flex;
      align-items:center;
      gap:16px;
      margin-left:auto;
      width:100%;
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.04);
      color:var(--text);
      margin-left:auto;
      transition:transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
    }
    .nav-toggle:hover,
    .nav-toggle:focus-visible{
      transform:translateY(-1px);
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.2);
      outline:none;
    }
    .nav-list{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:8px;
      flex-wrap:wrap;
      margin:0 0 0 auto;
      padding:0;
      list-style:none;
    }
    .nav-list a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      height:42px;
      padding:0 14px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      transition:transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
      white-space:nowrap;
    }
    .nav-list a:hover,
    .nav-list a:focus-visible{
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.12);
      transform:translateY(-1px);
      outline:none;
    }
    .nav-list a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(255,77,125,.2), rgba(98,212,255,.14));
      border-color:rgba(255,255,255,.12);
      box-shadow:0 12px 24px rgba(0,0,0,.18);
    }
    .hero{
      position:relative;
      overflow:hidden;
      padding:36px 0 18px;
    }
    .hero-shell{
      position:relative;
      min-height:620px;
      border:1px solid rgba(255,255,255,.08);
      border-radius:34px;
      background:
        linear-gradient(135deg, rgba(6,12,24,.72), rgba(12,23,40,.58)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(120deg, rgba(7,17,31,.86) 0%, rgba(7,17,31,.72) 46%, rgba(7,17,31,.28) 100%),
        linear-gradient(180deg, rgba(7,17,31,.1), rgba(7,17,31,.7));
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.12fr .88fr;
      gap:28px;
      padding:56px;
      align-items:center;
      min-height:620px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      font-size:.92rem;
      letter-spacing:.2px;
      margin-bottom:18px;
      width:fit-content;
      box-shadow:var(--shadow-soft);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--good);
      box-shadow:0 0 0 5px rgba(61,220,151,.14);
    }
    h1{
      margin:0;
      font-size:clamp(2.4rem, 5vw, 4.7rem);
      line-height:1.02;
      letter-spacing:-.03em;
      text-wrap:balance;
    }
    .hero-copy{
      margin:18px 0 0;
      max-width:620px;
      color:#dce6f7;
      font-size:1.04rem;
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
      font-weight:700;
      letter-spacing:.2px;
      white-space:nowrap;
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      color:#fff;
      box-shadow:0 16px 28px rgba(255,77,125,.28);
    }
    .btn-primary:hover,
    .btn-primary:focus-visible{
      transform:translateY(-2px);
      box-shadow:0 20px 36px rgba(255,77,125,.34);
      outline:none;
    }
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.12);
    }
    .btn-ghost:hover,
    .btn-ghost:focus-visible{
      transform:translateY(-2px);
      background:rgba(255,255,255,.1);
      border-color:rgba(255,255,255,.18);
      outline:none;
    }
    .hero-search{
      margin-top:22px;
      max-width:620px;
      display:flex;
      gap:10px;
      padding:10px;
      border-radius:22px;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(8,15,27,.54);
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(10px);
    }
    .hero-search input{
      flex:1;
      min-width:0;
      border:0;
      outline:none;
      background:transparent;
      color:#fff;
      padding:6px 8px;
    }
    .hero-search input::placeholder{color:#8ea0be}
    .hero-search button{
      min-width:120px;
      border-radius:16px;
      background:linear-gradient(135deg, rgba(98,212,255,.95), rgba(255,77,125,.92));
      color:#08111f;
      font-weight:800;
      padding:0 16px;
      transition:transform .25s var(--ease), filter .25s var(--ease);
    }
    .hero-search button:hover,
    .hero-search button:focus-visible{
      transform:translateY(-1px);
      filter:brightness(1.06);
      outline:none;
    }
    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      color:#dfe8f6;
      font-size:.92rem;
      backdrop-filter:blur(10px);
    }
    .pill::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(98,212,255,.12);
    }
    .hero-panel{
      display:grid;
      gap:16px;
      align-self:stretch;
    }
    .panel-card{
      position:relative;
      overflow:hidden;
      border-radius:26px;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(10,19,33,.72);
      box-shadow:var(--shadow-soft);
      min-height:210px;
    }
    .panel-card.media{
      min-height:300px;
      background:
        linear-gradient(180deg, rgba(7,17,31,.1), rgba(7,17,31,.86)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
    }
    .panel-card.media:nth-child(2){
      min-height:148px;
      background:
        linear-gradient(180deg, rgba(7,17,31,.02), rgba(7,17,31,.82)),
        url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
    }
    .panel-card.media:nth-child(3){
      min-height:148px;
      background:
        linear-gradient(180deg, rgba(7,17,31,.02), rgba(7,17,31,.82)),
        url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat;
    }
    .panel-content{
      position:absolute;
      inset:auto 0 0 0;
      padding:22px;
      background:linear-gradient(180deg, rgba(4,8,15,0), rgba(4,8,15,.9));
    }
    .panel-badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.12);
      font-size:.82rem;
      color:#fff;
      margin-bottom:10px;
    }
    .panel-title{
      margin:0;
      font-size:1.14rem;
      line-height:1.45;
      letter-spacing:.1px;
    }
    .panel-mini{
      display:flex;
      gap:12px;
      align-items:center;
      margin-top:10px;
      color:#cfdaf0;
      font-size:.9rem;
    }
    .dot{
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 0 4px rgba(255,77,125,.12);
      flex-shrink:0;
    }
    .hero-metrics{
      display:grid;
      grid-template-columns:repeat(3, 1fr);
      gap:12px;
      margin-top:18px;
    }
    .metric{
      padding:16px 14px;
      border-radius:20px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      backdrop-filter:blur(8px);
    }
    .metric strong{
      display:block;
      font-size:1.2rem;
      margin-bottom:4px;
      color:#fff;
    }
    .metric span{
      font-size:.84rem;
      color:var(--muted);
    }
    .section{
      padding:26px 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:16px;
      margin-bottom:20px;
    }
    .section-title{
      margin:0;
      font-size:clamp(1.45rem, 2.2vw, 2.2rem);
      line-height:1.2;
      letter-spacing:-.02em;
    }
    .section-desc{
      margin:0;
      color:var(--muted);
      max-width:680px;
      font-size:.98rem;
      line-height:1.8;
    }
    .grid-4{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:18px;
    }
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:18px;
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:18px;
    }
    .feature-card,
    .topic-card,
    .news-card,
    .guide-card,
    .faq-item,
    .cta-card{
      position:relative;
      border-radius:var(--radius);
      border:1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02)),
        rgba(15,29,51,.82);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
    }
    .feature-card:hover,
    .topic-card:hover,
    .news-card:hover,
    .guide-card:hover,
    .faq-item:hover{
      transform:translateY(-3px);
      border-color:rgba(255,255,255,.15);
      box-shadow:0 20px 44px rgba(0,0,0,.24);
    }
    .feature-card{
      padding:22px;
      min-height:190px;
    }
    .feature-icon{
      width:52px;
      height:52px;
      border-radius:18px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      background:linear-gradient(135deg, rgba(255,77,125,.18), rgba(98,212,255,.14));
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      font-weight:800;
    }
    .feature-card h3,
    .topic-card h3,
    .news-card h3,
    .guide-card h3,
    .faq-item summary{
      margin:0;
      font-size:1.06rem;
      line-height:1.45;
      letter-spacing:.1px;
    }
    .feature-card p,
    .topic-card p,
    .news-card p,
    .guide-card p{
      margin:12px 0 0;
      color:var(--muted);
      line-height:1.8;
      font-size:.95rem;
    }
    .feature-tags,
    .topic-tags,
    .news-meta,
    .guide-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:16px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      color:#dfe7f6;
      font-size:.82rem;
      line-height:1;
    }
    .topic-card .thumb{
      position:relative;
      aspect-ratio:16/11;
      overflow:hidden;
    }
    .topic-card .thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.01);
      transition:transform .35s var(--ease);
    }
    .topic-card:hover .thumb img{transform:scale(1.06)}
    .topic-card .thumb::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(7,17,31,.02), rgba(7,17,31,.58));
    }
    .topic-card .body{
      padding:18px 18px 20px;
    }
    .topic-card .cta-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-top:16px;
      color:#fff;
      font-weight:700;
    }
    .topic-card .cta-line span{
      color:var(--accent);
      font-size:.92rem;
      font-weight:700;
    }
    .topic-card .cta-line i{
      font-style:normal;
      width:34px;
      height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      transition:transform .25s var(--ease), background .25s var(--ease);
    }
    .topic-card:hover .cta-line i{
      transform:translateX(2px);
      background:rgba(255,255,255,.1);
    }
    .split{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
      align-items:stretch;
    }
    .spotlight{
      display:grid;
      gap:18px;
    }
    .spotlight-panel{
      padding:24px;
      min-height:100%;
    }
    .spotlight-photo{
      min-height:420px;
      border-radius:var(--radius);
      border:1px solid var(--line);
      overflow:hidden;
      background:
        linear-gradient(180deg, rgba(7,17,31,.08), rgba(7,17,31,.84)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow:var(--shadow-soft);
      position:relative;
    }
    .spotlight-photo::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(7,17,31,.02), rgba(7,17,31,.68));
    }
    .spotlight-overlay{
      position:absolute;
      inset:auto 0 0 0;
      z-index:1;
      padding:24px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      justify-content:space-between;
    }
    .spotlight-overlay strong{
      font-size:1.2rem;
    }
    .spotlight-list{
      margin:18px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .spotlight-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:var(--muted);
      line-height:1.8;
    }
    .spotlight-list .num{
      flex-shrink:0;
      width:28px;
      height:28px;
      border-radius:10px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.08);
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:800;
      font-size:.88rem;
    }
    .quick-strip{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:12px;
    }
    .quick-strip a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:40px;
      padding:0 14px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#dfe7f6;
      transition:transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
    }
    .quick-strip a:hover,
    .quick-strip a:focus-visible{
      transform:translateY(-1px);
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.14);
      outline:none;
    }
    .news-card{
      padding:18px;
      display:flex;
      flex-direction:column;
      gap:14px;
      min-height:100%;
    }
    .news-card .topline{
      display:flex;
      justify-content:space-between;
      gap:10px;
      align-items:center;
      flex-wrap:wrap;
    }
    .news-card .excerpt{
      margin:0;
      color:var(--muted);
      line-height:1.8;
      font-size:.95rem;
      min-height:5.4em;
    }
    .news-card .linkline{
      margin-top:auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-top:12px;
      border-top:1px solid rgba(255,255,255,.08);
      color:#fff;
      font-weight:700;
    }
    .news-card .linkline span{
      color:var(--muted);
      font-size:.9rem;
      font-weight:600;
    }
    .news-card .linkline i{
      font-style:normal;
      width:34px;
      height:34px;
      border-radius:12px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      display:grid;
      place-items:center;
    }
    .empty-state{
      grid-column:1 / -1;
      padding:24px;
      text-align:center;
      border-radius:var(--radius);
      border:1px dashed rgba(255,255,255,.16);
      color:var(--muted);
      background:rgba(255,255,255,.03);
    }
    .guide-card{
      padding:22px;
    }
    .step{
      display:flex;
      gap:14px;
      align-items:flex-start;
    }
    .step-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      flex-shrink:0;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(255,77,125,.18), rgba(98,212,255,.14));
      border:1px solid rgba(255,255,255,.08);
      font-weight:800;
      color:#fff;
    }
    .step h3{
      margin:2px 0 8px;
    }
    .step p{
      margin:0;
      color:var(--muted);
      line-height:1.8;
      font-size:.95rem;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      padding:0;
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      padding:20px 22px;
      cursor:pointer;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:30px;
      height:30px;
      border-radius:10px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      color:#fff;
      font-size:1.1rem;
      flex-shrink:0;
    }
    .faq-item[open] summary::after{content:"–"}
    .faq-item .answer{
      padding:0 22px 20px;
      color:var(--muted);
      line-height:1.85;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .cta-card{
      padding:28px;
      background:
        linear-gradient(135deg, rgba(255,77,125,.18), rgba(98,212,255,.12)),
        rgba(15,29,51,.86);
      border-color:rgba(255,255,255,.1);
    }
    .cta-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:18px;
      align-items:center;
    }
    .cta-card h2{
      margin:0;
      font-size:clamp(1.55rem, 2.4vw, 2.35rem);
      line-height:1.2;
    }
    .cta-card p{
      margin:14px 0 0;
      color:#dbe6f7;
      line-height:1.85;
      max-width:720px;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }
    .cta-note{
      margin-top:16px;
      color:rgba(255,255,255,.76);
      font-size:.92rem;
    }
    .site-footer{
      padding:30px 0 42px;
      margin-top:16px;
    }
    .footer-inner{
      border-top:1px solid rgba(255,255,255,.08);
      padding-top:24px;
      display:grid;
      gap:18px;
      grid-template-columns:1.2fr .8fr;
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      line-height:1.85;
      max-width:720px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-end;
      align-content:flex-start;
    }
    .footer-links a{
      display:inline-flex;
      align-items:center;
      min-height:40px;
      padding:0 14px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.03);
      transition:transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      transform:translateY(-1px);
      color:#fff;
      border-color:rgba(255,255,255,.16);
      background:rgba(255,255,255,.07);
      outline:none;
    }
    .copyright{
      grid-column:1 / -1;
      color:var(--muted-2);
      font-size:.9rem;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:space-between;
      align-items:center;
      padding-top:8px;
    }
    .section-anchor{scroll-margin-top:100px}
    .news-list{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:18px;
    }
    .label{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:#fff;
      font-size:.82rem;
      font-weight:700;
      letter-spacing:.15px;
    }
    .label .mini-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--warning);
      box-shadow:0 0 0 4px rgba(255,209,102,.12);
    }
    .section-soft{
      position:relative;
    }
    .section-soft::before{
      content:"";
      position:absolute;
      inset:-40px 0 auto;
      height:160px;
      pointer-events:none;
      background:linear-gradient(180deg, rgba(255,255,255,.04), transparent);
      filter:blur(2px);
    }
    @media (max-width: 1140px){
      .hero-grid{padding:42px;grid-template-columns:1fr}
      .hero-panel{grid-template-columns:repeat(3, minmax(0,1fr))}
      .panel-card.media{min-height:220px}
      .split,.cta-grid,.footer-inner{grid-template-columns:1fr}
      .cta-actions,.footer-links{justify-content:flex-start}
      .news-list,.grid-4{grid-template-columns:repeat(2, minmax(0,1fr))}
      .grid-3{grid-template-columns:repeat(2, minmax(0,1fr))}
    }
    @media (max-width: 860px){
      .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
      .nav-wrap{width:auto}
      .nav-list{
        position:absolute;
        left:16px;
        right:16px;
        top:78px;
        padding:14px;
        border-radius:22px;
        background:rgba(10,18,32,.96);
        border:1px solid rgba(255,255,255,.09);
        box-shadow:var(--shadow);
        display:grid;
        grid-template-columns:1fr 1fr;
        gap:10px;
        opacity:0;
        visibility:hidden;
        transform:translateY(-10px);
        pointer-events:none;
        transition:opacity .24s var(--ease), transform .24s var(--ease), visibility .24s var(--ease);
      }
      .site-header.nav-open .nav-list{
        opacity:1;
        visibility:visible;
        transform:translateY(0);
        pointer-events:auto;
      }
      .nav-list a{
        justify-content:center;
        width:100%;
        background:rgba(255,255,255,.04);
      }
      .hero-shell{border-radius:28px}
      .hero-grid{padding:28px}
      .hero-metrics{grid-template-columns:1fr}
      .hero-panel{grid-template-columns:1fr}
      .hero-panel .panel-card.media:nth-child(2),
      .hero-panel .panel-card.media:nth-child(3){min-height:160px}
      .grid-4,.grid-3,.grid-2,.news-list{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .copyright{flex-direction:column;align-items:flex-start}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width: 520px){
      .container{width:min(calc(100% - 24px), var(--container))}
      .hero{
        padding-top:18px;
      }
      .hero-shell{
        border-radius:24px;
      }
      .hero-grid{
        padding:20px;
        gap:20px;
      }
      h1{font-size:2rem}
      .hero-copy{font-size:.98rem}
      .hero-actions,.hero-search,.quick-strip,.feature-tags,.topic-tags,.news-meta,.guide-meta{
        gap:8px;
      }
      .hero-search{
        flex-direction:column;
      }
      .hero-search button{
        width:100%;
      }
      .nav-list{
        grid-template-columns:1fr;
      }
      .feature-card,.topic-card,.news-card,.guide-card,.cta-card{border-radius:20px}
      .faq-item summary{padding:18px}
      .faq-item .answer{padding:0 18px 18px}
      .section{padding:20px 0}
      .panel-title{font-size:1.02rem}
      .brand-text{font-size:.96rem}
    }

/* roulang page: category1 */
:root{
      --bg:#0f1218;
      --bg-soft:#151a23;
      --panel:#171d27;
      --panel-2:#1c2330;
      --line:rgba(255,255,255,.08);
      --line-strong:rgba(255,255,255,.14);
      --text:#f6f7fb;
      --muted:#aab2c2;
      --muted-2:#7f8899;
      --brand:#ff5f8f;
      --brand-2:#8f63ff;
      --brand-3:#ff9d5c;
      --shadow:0 22px 70px rgba(0,0,0,.35);
      --shadow-soft:0 14px 30px rgba(0,0,0,.2);
      --radius:22px;
      --radius-sm:16px;
      --radius-xs:12px;
      --container:1180px;
      --space:clamp(18px, 2.4vw, 28px);
      --space-lg:clamp(28px, 4vw, 48px);
      --nav-h:82px;
      --ease:cubic-bezier(.2,.8,.2,1);
      --gradient:linear-gradient(135deg, rgba(255,95,143,.95), rgba(143,99,255,.88));
      --gradient-2:linear-gradient(135deg, rgba(255,157,92,.9), rgba(255,95,143,.9));
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
      line-height:1.72;
      background:
        radial-gradient(circle at top left, rgba(255,95,143,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(143,99,255,.16), transparent 24%),
        linear-gradient(180deg, #0c0f15 0%, #0f1218 42%, #0d1016 100%);
      min-height:100vh;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{
      font:inherit;
      color:inherit;
      background:none;
    }
    button{border:0;cursor:pointer}
    ::selection{background:rgba(255,95,143,.28);color:#fff}
    :focus{outline:none}
    :focus-visible{
      outline:3px solid rgba(255,95,143,.55);
      outline-offset:3px;
      border-radius:10px;
    }

    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(10,13,19,.72);
      backdrop-filter:saturate(160%) blur(16px);
      border-bottom:1px solid transparent;
      transition:background .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
    }
    .site-header.is-scrolled{
      background:rgba(10,13,19,.88);
      border-color:var(--line);
      box-shadow:0 10px 30px rgba(0,0,0,.25);
    }
    .header-inner{
      min-height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:14px;
      min-width:0;
      flex:0 0 auto;
    }
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:14px;
      background:var(--gradient);
      box-shadow:0 12px 24px rgba(255,95,143,.28), inset 0 1px 0 rgba(255,255,255,.25);
      position:relative;
      overflow:hidden;
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:auto;
      border-radius:999px;
      background:rgba(255,255,255,.28);
      filter:blur(.2px);
    }
    .brand-mark::before{
      width:14px;height:14px;left:10px;top:9px;
    }
    .brand-mark::after{
      width:20px;height:20px;right:7px;bottom:7px;background:rgba(255,255,255,.18);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
      font-size:1.04rem;
      font-weight:800;
      letter-spacing:.02em;
      line-height:1.1;
    }
    .brand-sub{
      font-size:.78rem;
      color:var(--muted);
      font-weight:600;
      letter-spacing:.01em;
    }

    .nav-wrap{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .nav-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:14px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      color:var(--text);
      transition:transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
    }
    .nav-toggle:hover{
      background:rgba(255,255,255,.08);
      border-color:var(--line-strong);
      transform:translateY(-1px);
    }
    .nav-list{
      list-style:none;
      display:flex;
      align-items:center;
      gap:10px;
      padding:0;
      margin:0;
      flex-wrap:wrap;
    }
    .nav-list a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:44px;
      padding:0 16px;
      border-radius:999px;
      color:var(--muted);
      font-weight:700;
      font-size:.95rem;
      border:1px solid transparent;
      transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
    }
    .nav-list a:hover{
      color:var(--text);
      background:rgba(255,255,255,.05);
      border-color:var(--line);
      transform:translateY(-1px);
    }
    .nav-list a.active{
      color:#fff;
      background:var(--gradient);
      border-color:transparent;
      box-shadow:0 12px 26px rgba(255,95,143,.24);
    }

    .main{
      padding-bottom:32px;
    }

    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:.92rem;
      margin-bottom:18px;
    }
    .breadcrumb a{
      color:var(--muted);
      transition:color .2s var(--ease);
    }
    .breadcrumb a:hover{color:var(--text)}
    .breadcrumb span.sep{
      color:rgba(255,255,255,.3);
    }

    .section{
      padding:var(--space-lg) 0;
    }
    .hero{
      position:relative;
      padding:30px 0 20px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(10,13,18,.18), rgba(10,13,18,.78)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      isolation:isolate;
    }
    .hero-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 20% 20%, rgba(255,95,143,.25), transparent 28%),
        radial-gradient(circle at 80% 10%, rgba(143,99,255,.18), transparent 28%),
        linear-gradient(180deg, rgba(0,0,0,.1), rgba(0,0,0,.55));
      z-index:-1;
    }
    .hero-inner{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(290px,.85fr);
      gap:28px;
      padding:clamp(24px, 4.2vw, 42px);
      align-items:stretch;
    }
    .hero-copy{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:22px;
      min-width:0;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      width:max-content;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      font-weight:700;
      font-size:.88rem;
      letter-spacing:.04em;
      backdrop-filter:blur(8px);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-3));
      box-shadow:0 0 0 4px rgba(255,95,143,.16);
    }
    .hero h1{
      margin:0;
      font-size:clamp(2.1rem, 5vw, 4.1rem);
      line-height:1.06;
      letter-spacing:-.03em;
      max-width:12ch;
    }
    .hero-lead{
      margin:0;
      max-width:62ch;
      color:rgba(246,247,251,.86);
      font-size:1.05rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 20px;
      border-radius:999px;
      font-weight:800;
      letter-spacing:.01em;
      transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
    }
    .btn:hover{
      transform:translateY(-1px);
    }
    .btn-primary{
      color:#fff;
      background:var(--gradient);
      box-shadow:0 18px 32px rgba(255,95,143,.22);
    }
    .btn-primary:hover{
      box-shadow:0 22px 36px rgba(255,95,143,.26);
    }
    .btn-ghost{
      color:#fff;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.06);
      backdrop-filter:blur(10px);
    }
    .btn-ghost:hover{
      background:rgba(255,255,255,.1);
      border-color:rgba(255,255,255,.24);
    }

    .pill-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:8px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:38px;
      padding:0 14px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
      color:rgba(255,255,255,.86);
      font-size:.92rem;
      font-weight:700;
      backdrop-filter:blur(8px);
    }
    .pill i{
      width:8px;
      height:8px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-3));
      box-shadow:0 0 0 4px rgba(255,95,143,.12);
      display:inline-block;
    }

    .hero-visual{
      display:flex;
      flex-direction:column;
      gap:14px;
      min-width:0;
    }
    .visual-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(12,15,21,.55);
      box-shadow:var(--shadow-soft);
      min-height:100%;
    }
    .visual-card img{
      width:100%;
      height:100%;
      min-height:340px;
      object-fit:cover;
    }
    .visual-caption{
      position:absolute;
      inset:auto 16px 16px 16px;
      padding:14px 16px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(9,11,15,.22), rgba(9,11,15,.82));
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(12px);
    }
    .visual-caption strong{
      display:block;
      font-size:1.02rem;
      margin-bottom:4px;
    }
    .visual-caption span{
      color:rgba(246,247,251,.78);
      font-size:.92rem;
    }
    .mini-stats{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:10px;
    }
    .mini-stat{
      padding:14px 12px;
      border-radius:18px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.1);
      backdrop-filter:blur(10px);
      text-align:left;
    }
    .mini-stat b{
      display:block;
      font-size:1rem;
      margin-bottom:4px;
      color:#fff;
    }
    .mini-stat span{
      display:block;
      color:var(--muted);
      font-size:.88rem;
    }

    .section-title{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }
    .section-title h2{
      margin:0;
      font-size:clamp(1.45rem, 2.6vw, 2.1rem);
      line-height:1.15;
      letter-spacing:-.02em;
    }
    .section-title p{
      margin:0;
      color:var(--muted);
      max-width:58ch;
      font-size:.98rem;
    }

    .grid{
      display:grid;
      gap:16px;
    }
    .grid-4{grid-template-columns:repeat(4, minmax(0,1fr))}
    .grid-3{grid-template-columns:repeat(3, minmax(0,1fr))}
    .grid-2{grid-template-columns:repeat(2, minmax(0,1fr))}
    .card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius);
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.035));
      border:1px solid var(--line);
      box-shadow:0 12px 26px rgba(0,0,0,.18);
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
    }
    .card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 20px 38px rgba(0,0,0,.28);
      background:linear-gradient(180deg, rgba(255,255,255,.075), rgba(255,255,255,.045));
    }
    .card-inner{
      padding:20px;
    }
    .icon-badge{
      width:46px;
      height:46px;
      border-radius:16px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(135deg, rgba(255,95,143,.24), rgba(143,99,255,.22));
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:1.1rem;
      margin-bottom:14px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
    }
    .card h3{
      margin:0 0 8px;
      font-size:1.06rem;
      line-height:1.35;
    }
    .card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .card-list{
      margin:14px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .card-list li{
      position:relative;
      padding-left:18px;
      color:rgba(246,247,251,.88);
      font-size:.95rem;
    }
    .card-list li::before{
      content:"";
      position:absolute;
      left:0;
      top:.68em;
      width:7px;
      height:7px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-3));
      box-shadow:0 0 0 4px rgba(255,95,143,.1);
    }

    .feature-band{
      display:grid;
      grid-template-columns:minmax(0,1.3fr) minmax(300px,.7fr);
      gap:16px;
      align-items:stretch;
    }
    .panel{
      border-radius:28px;
      overflow:hidden;
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
    }
    .panel-inner{
      padding:22px;
    }
    .cover-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
    }
    .content-card{
      overflow:hidden;
      border-radius:24px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      transition:      display:flex;
      flex-direction:column;
      height:100%;
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
    }
    .content-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 20px 34px rgba(0,0,0,.26);
    }
    .content-thumb{
      position:relative;
      aspect-ratio:16/10;
      overflow:hidden;
      background:#111620;
    }
    .content-thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.01);
      transition:transform .35s var(--ease), filter .35s var(--ease);
      filter:saturate(1.02) contrast(1.02);
    }
    .content-card:hover .content-thumb img{
      transform:scale(1.06);
    }
    .content-thumb::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(8,10,14,.02) 30%, rgba(8,10,14,.52) 100%);
      pointer-events:none;
    }
    .content-body{
      padding:18px 18px 20px;
      display:flex;
      flex-direction:column;
      gap:12px;
      flex:1;
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:30px;
      padding:0 11px;
      border-radius:999px;
      font-size:.8rem;
      font-weight:700;
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.09);
    }
    .tag.hot{background:rgba(255,95,143,.18);border-color:rgba(255,95,143,.22)}
    .tag.pink{background:rgba(143,99,255,.16);border-color:rgba(143,99,255,.22)}
    .tag.orange{background:rgba(255,157,92,.16);border-color:rgba(255,157,92,.22)}
    .content-body h3{
      font-size:1.04rem;
      line-height:1.45;
      margin:0;
    }
    .content-body p{
      color:var(--muted);
      margin:0;
      font-size:.94rem;
    }
    .meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:auto;
      color:var(--muted-2);
      font-size:.88rem;
    }
    .meta a{
      color:#fff;
      font-weight:700;
      transition:opacity .2s var(--ease), transform .2s var(--ease);
    }
    .meta a:hover{opacity:.88;transform:translateX(1px)}

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:16px;
    }
    .feature{
      padding:22px;
      border-radius:24px;
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
      border:1px solid var(--line);
    }
    .feature h3{
      margin:0 0 10px;
      font-size:1.06rem;
    }
    .feature p{
      margin:0;
      color:var(--muted);
    }

    .media-frame{
      position:relative;
      overflow:hidden;
      border-radius:26px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.03);
      min-height:100%;
    }
    .media-frame img{
      width:100%;
      height:100%;
      min-height:330px;
      object-fit:cover;
    }
    .media-frame .frame-note{
      position:absolute;
      left:16px;
      right:16px;
      bottom:16px;
      border-radius:18px;
      padding:14px 15px;
      background:linear-gradient(180deg, rgba(11,13,18,.2), rgba(11,13,18,.84));
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(12px);
    }
    .frame-note strong{
      display:block;
      font-size:1rem;
      margin-bottom:4px;
    }
    .frame-note span{
      color:rgba(246,247,251,.78);
      font-size:.92rem;
    }

    .search-box{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      padding:12px;
      border-radius:22px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(10px);
      max-width:760px;
    }
    .search-box input{
      flex:1 1 220px;
      min-height:48px;
      padding:0 16px;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(10,13,18,.42);
      color:#fff;
      transition:border-color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
    }
    .search-box input::placeholder{color:rgba(255,255,255,.46)}
    .search-box input:focus{
      border-color:rgba(255,95,143,.42);
      box-shadow:0 0 0 4px rgba(255,95,143,.12);
      background:rgba(10,13,18,.58);
    }

    .faq-grid{
      display:grid;
      gap:12px;
    }
    .faq-item{
      overflow:hidden;
      border-radius:20px;
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:800;
      color:#fff;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:34px;
      height:34px;
      flex:0 0 34px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      transition:transform .2s var(--ease), background .2s var(--ease);
    }
    .faq-item[open] summary::after{
      content:"–";
      transform:rotate(0deg);
    }
    .faq-item summary:hover::after{
      background:rgba(255,255,255,.1);
    }
    .faq-answer{
      padding:0 20px 18px;
      color:var(--muted);
    }

    .cta{
      margin:0 0 10px;
      border-radius:30px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.12);
      background:
        linear-gradient(180deg, rgba(13,16,23,.3), rgba(13,16,23,.82)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-inner{
      padding:clamp(24px, 4vw, 40px);
      display:grid;
      grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);
      gap:18px;
      align-items:center;
    }
    .cta h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 3vw, 2.3rem);
      line-height:1.2;
    }
    .cta p{
      margin:0;
      color:rgba(246,247,251,.86);
      max-width:60ch;
    }
    .cta-panel{
      padding:18px;
      border-radius:22px;
      background:rgba(10,13,18,.48);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(10px);
    }
    .cta-panel .btn{
      width:100%;
      margin-top:10px;
    }
    .cta-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .cta-list li{
      position:relative;
      padding-left:18px;
      color:rgba(246,247,251,.88);
      font-size:.95rem;
    }
    .cta-list li::before{
      content:"";
      position:absolute;
      left:0;
      top:.7em;
      width:7px;
      height:7px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-3));
    }

    .site-footer{
      padding:18px 0 28px;
    }
    .footer-inner{
      display:grid;
      grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr) auto;
      gap:18px;
      align-items:flex-start;
      padding:22px 0 8px;
      border-top:1px solid var(--line);
    }
    .footer-brand p{
      margin:14px 0 0;
      color:var(--muted);
      max-width:52ch;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-start;
    }
    .footer-links a{
      display:inline-flex;
      align-items:center;
      min-height:40px;
      padding:0 14px;
      border-radius:999px;
      color:var(--muted);
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.16);
      transform:translateY(-1px);
    }
    .footer-links a.active{
      color:#fff;
      background:var(--gradient);
      border-color:transparent;
    }
    .copyright{
      display:flex;
      flex-direction:column;
      gap:8px;
      color:var(--muted-2);
      font-size:.9rem;
      white-space:nowrap;
    }

    .section-soft{
      margin-top:4px;
      padding-top:0;
    }

    .link-card{
      display:flex;
      align-items:flex-end;
      min-height:160px;
      padding:18px;
      background:
        linear-gradient(180deg, rgba(9,11,16,.1), rgba(9,11,16,.72)),
        var(--img) center/cover no-repeat;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.12);
      overflow:hidden;
      position:relative;
      box-shadow:var(--shadow-soft);
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
    }
    .link-card:hover{
      transform:translateY(-4px);
      box-shadow:0 20px 34px rgba(0,0,0,.28);
      border-color:rgba(255,255,255,.2);
    }
    .link-card .link-content{
      position:relative;
      z-index:1;
      display:flex;
      flex-direction:column;
      gap:8px;
      max-width:24ch;
    }
    .link-card strong{
      font-size:1.08rem;
      line-height:1.3;
    }
    .link-card span{
      color:rgba(246,247,251,.84);
      font-size:.92rem;
    }

    .note-line{
      margin-top:8px;
      color:var(--muted);
      font-size:.92rem;
    }

    @media (max-width: 1024px){
      .hero-inner,
      .feature-band,
      .cta-inner,
      .footer-inner{
        grid-template-columns:1fr;
      }
      .grid-4{grid-template-columns:repeat(2, minmax(0,1fr))}
      .grid-3{grid-template-columns:repeat(2, minmax(0,1fr))}
      .cover-grid,
      .feature-grid{
        grid-template-columns:1fr 1fr;
      }
      .visual-card img,
      .media-frame img{
        min-height:280px;
      }
      .copyright{
        white-space:normal;
      }
    }

    @media (max-width: 768px){
      .header-inner{
        gap:10px;
      }
      .nav-toggle{
        display:inline-flex;
        align-items:center;
        justify-content:center;
      }
      .nav-wrap{
        position:relative;
      }
      .nav-list{
        position:absolute;
        right:0;
        top:58px;
        width:min(92vw, 320px);
        padding:12px;
        border-radius:20px;
        background:rgba(10,13,19,.96);
        border:1px solid var(--line);
        box-shadow:0 22px 40px rgba(0,0,0,.32);
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
      }
      .nav-wrap.is-open .nav-list{
        display:flex;
      }
      .nav-list a{
        justify-content:flex-start;
        width:100%;
      }
      .hero{
        padding-top:18px;
      }
      .hero h1{
        max-width:none;
      }
      .mini-stats{
        grid-template-columns:1fr;
      }
      .grid-4,
      .grid-3,
      .grid-2,
      .cover-grid,
      .feature-grid{
        grid-template-columns:1fr;
      }
      .section-title{
        flex-direction:column;
        align-items:flex-start;
      }
      .search-box{
        padding:10px;
      }
      .cta-panel .btn{
        min-height:46px;
      }
    }

    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 20px));
      }
      .site-header{
        top:0;
      }
      .brand-text{
        font-size:.98rem;
      }
      .brand-sub{
        font-size:.72rem;
      }
      .hero-shell,
      .panel,
      .cta,
      .card,
      .link-card{
        border-radius:20px;
      }
      .hero-inner,
      .panel-inner{
        padding:18px;
      }
      .hero h1{
        font-size:clamp(1.8rem, 9vw, 2.6rem);
      }
      .hero-lead,
      .cta p{
        font-size:.98rem;
      }
      .btn{
        width:100%;
      }
      .hero-actions{
        width:100%;
      }
      .hero-actions .btn{
        flex:1 1 100%;
      }
      .search-box{
        flex-direction:column;
      }
      .search-box input,
      .search-box .btn{
        width:100%;
      }
      .footer-links{
        gap:8px;
      }
      .footer-links a{
        width:100%;
        justify-content:center;
      }
    }

/* roulang page: article */
:root{
      --bg:#07111f;
      --bg-soft:#0b1729;
      --surface:#101c31;
      --surface-2:#15253f;
      --card:#11203a;
      --card-2:#0f1b30;
      --text:#eef4ff;
      --muted:#a7b6d6;
      --line:rgba(177,198,255,.14);
      --line-strong:rgba(177,198,255,.22);
      --primary:#ff5e8a;
      --primary-2:#ff7b52;
      --accent:#55d6be;
      --accent-2:#7aa8ff;
      --warning:#ffd166;
      --success:#62d58d;
      --shadow:0 18px 50px rgba(0,0,0,.35);
      --shadow-soft:0 10px 30px rgba(0,0,0,.22);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1180px;
      --header-h:78px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
      line-height:1.75;
      background:
        radial-gradient(1100px 700px at 10% -10%, rgba(255,94,138,.18), transparent 60%),
        radial-gradient(800px 560px at 90% 0%, rgba(85,214,190,.16), transparent 55%),
        linear-gradient(180deg, #08101d 0%, #0a1425 55%, #07111f 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      background:
        linear-gradient(rgba(7,17,31,.66), rgba(7,17,31,.84)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity:.18;
      pointer-events:none;
      z-index:-1;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    :focus-visible{
      outline:3px solid rgba(122,168,255,.55);
      outline-offset:3px;
    }
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      backdrop-filter:blur(18px);
      background:linear-gradient(180deg, rgba(8,16,29,.88), rgba(8,16,29,.72));
      border-bottom:1px solid rgba(177,198,255,.08);
    }
    .header-inner{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:14px;
      min-width:0;
      transition:transform .25s var(--ease), opacity .25s var(--ease);
    }
    .brand:hover{transform:translateY(-1px)}
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:
        radial-gradient(circle at 28% 28%, rgba(255,255,255,.92), rgba(255,255,255,.16) 24%, transparent 25%),
        linear-gradient(135deg, var(--primary), var(--primary-2) 45%, var(--accent));
      box-shadow:0 12px 26px rgba(255,94,138,.24);
      position:relative;
      flex:none;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:10px;
      border-radius:10px;
      border:1px solid rgba(255,255,255,.24);
    }
    .brand-text{
      display:flex;
      flex-wrap:wrap;
      flex-direction:column;
      line-height:1.15;
      font-weight:800;
      letter-spacing:.2px;
      font-size:1.02rem;
    }
    .brand-sub{
      margin-top:4px;
      color:var(--muted);
      font-size:.82rem;
      font-weight:600;
    }
    .nav-wrap{display:flex;align-items:center;gap:12px}
    .nav-toggle{
      display:none;
      width:46px;
      height:46px;
      border:1px solid var(--line);
      border-radius:14px;
      color:var(--text);
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
      box-shadow:var(--shadow-soft);
    }
    .nav-list{
      display:flex;
      align-items:center;
      gap:8px;
      list-style:none;
      margin:0;
      padding:0;
    }
    .nav-list a{
      display:inline-flex;
      align-items:center;
      min-height:44px;
      padding:0 16px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      transition:background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
    }
    .nav-list a:hover,
    .nav-list a:focus-visible{
      color:var(--text);
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.08);
      transform:translateY(-1px);
    }
    .nav-list a.active{
      color:#08111f;
      background:linear-gradient(135deg, #fff, #dfe9ff);
      box-shadow:0 12px 28px rgba(255,255,255,.12);
      border-color:transparent;
      font-weight:700;
    }
    .page-shell{padding-bottom:36px}
    .hero{
      padding:32px 0 16px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(177,198,255,.14);
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(11,23,41,.88), rgba(17,28,49,.74)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      isolation:isolate;
    }
    .hero-panel::after{
      content:"";
      position:absolute;
      inset:auto -20% -35% auto;
      width:340px;
      height:340px;
      background:radial-gradient(circle, rgba(255,94,138,.24), transparent 68%);
      pointer-events:none;
      z-index:-1;
    }
    .hero-inner{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);
      gap:26px;
      padding:30px;
      align-items:stretch;
    }
    .hero-kicker{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
      color:#d8e3ff;
      font-size:.92rem;
      width:fit-content;
    }
    .hero-kicker i{
      width:10px;height:10px;border-radius:999px;
      background:linear-gradient(135deg,var(--accent),var(--primary));
      box-shadow:0 0 0 6px rgba(85,214,190,.1);
      display:inline-block;
    }
    .hero h1{
      margin:16px 0 14px;
      font-size:clamp(2rem, 4vw, 3.5rem);
      line-height:1.08;
      letter-spacing:-.03em;
    }
    .hero-lead{
      max-width:62ch;
      margin:0;
      color:#d4def6;
      font-size:1.03rem;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin:20px 0 0;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:36px;
      padding:0 13px;
      border-radius:999px;
      border:1px solid rgba(177,198,255,.15);
      background:rgba(255,255,255,.05);
      color:#dce7ff;
      font-size:.92rem;
    }
    .chip strong{font-weight:700}
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:14px;
      border:1px solid transparent;
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
      font-weight:700;
      letter-spacing:.2px;
      user-select:none;
    }
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      color:#fff;
      box-shadow:0 16px 28px rgba(255,94,138,.24);
    }
    .btn-primary:hover{box-shadow:0 18px 36px rgba(255,94,138,.28)}
    .btn-secondary{
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.12);
      color:var(--text);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.09);
      border-color:rgba(255,255,255,.18);
    }
    .hero-aside{
      display:flex;
      flex-direction:column;
      gap:16px;
    }
    .image-card{
      position:relative;
      overflow:hidden;
      min-height:320px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.1);
      background:
        linear-gradient(180deg, rgba(8,16,29,.12), rgba(8,16,29,.78)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow-soft);
      isolation:isolate;
    }
    .image-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent 28%, rgba(5,10,18,.78) 100%);
    }
    .image-card-content{
      position:absolute;
      inset:auto 18px 18px 18px;
      z-index:1;
      display:grid;
      gap:10px;
    }
    .image-card .tiny{
      display:inline-flex;
      width:fit-content;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      color:#fff;
      font-size:.82rem;
    }
    .image-card h2{
      margin:0;
      font-size:1.25rem;
      line-height:1.3;
    }
    .image-card p{
      margin:0;
      color:#dfe8ff;
      font-size:.95rem;
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }
    .stat{
      padding:16px 14px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(177,198,255,.12);
      box-shadow:var(--shadow-soft);
    }
    .stat strong{
      display:block;
      font-size:1.08rem;
      margin-bottom:4px;
    }
    .stat span{
      color:var(--muted);
      font-size:.9rem;
    }
    main{display:block}
    .section{
      padding:18px 0;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:16px;
      margin-bottom:16px;
    }
    .section-title{
      margin:0;
      font-size:1.35rem;
      line-height:1.2;
      letter-spacing:-.02em;
    }
    .section-desc{
      margin:0;
      color:var(--muted);
      max-width:68ch;
      font-size:.96rem;
    }
    .content-grid{
      display:grid;
      grid-template-columns:minmax(0,1.68fr) minmax(290px,.92fr);
      gap:20px;
      align-items:start;
    }
    .panel{
      border-radius:26px;
      border:1px solid rgba(177,198,255,.12);
      background:linear-gradient(180deg, rgba(17,32,58,.94), rgba(13,23,41,.94));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .panel-pad{padding:24px}
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .article-meta .chip{
      background:rgba(255,255,255,.04);
    }
    .content-article{
      color:#eaf1ff;
      font-size:1.03rem;
    }
    .content-article h2,
    .content-article h3,
    .content-article h4{
      margin:1.7em 0 .72em;
      line-height:1.28;
      letter-spacing:-.02em;
    }
    .content-article h2{font-size:1.55rem}
    .content-article h3{font-size:1.22rem}
    .content-article p{margin:0 0 1em;color:#dbe5fb}
    .content-article a{
      color:#8dc7ff;
      text-decoration:none;
      border-bottom:1px solid rgba(141,199,255,.32);
      transition:color .2s var(--ease), border-color .2s var(--ease);
    }
    .content-article a:hover{color:#c3e2ff;border-color:rgba(195,226,255,.6)}
    .content-article img{
      max-width:100%;
      height:auto;
      border-radius:18px;
      margin:1.25em 0;
      border:1px solid rgba(177,198,255,.14);
      box-shadow:var(--shadow-soft);
    }
    .content-article ul,
    .content-article ol{
      padding-left:1.25em;
      margin:0 0 1em;
    }
    .content-article li{margin:.42em 0;color:#dbe5fb}
    .content-article blockquote{
      margin:1.2em 0;
      padding:18px 18px 18px 20px;
      border-left:4px solid var(--primary);
      background:rgba(255,255,255,.04);
      border-radius:0 16px 16px 0;
      color:#eff4ff;
    }
    .content-article table{
      width:100%;
      border-collapse:collapse;
      overflow:hidden;
      border-radius:16px;
      display:block;
      border:1px solid rgba(177,198,255,.14);
      margin:1.2em 0;
    }
    .content-article table thead,
    .content-article table tbody,
    .content-article table tr{display:table;width:100%;table-layout:fixed}
    .content-article th,
    .content-article td{
      padding:12px 14px;
      border-bottom:1px solid rgba(177,198,255,.12);
      text-align:left;
      color:#dbe5fb;
    }
    .content-article th{
      background:rgba(255,255,255,.05);
      color:#fff;
      font-weight:700;
    }
    .content-article pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#08111f;
      border:1px solid rgba(177,198,255,.12);
      color:#e8f1ff;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
    }
    .content-article code{
      padding:.14em .4em;
      border-radius:8px;
      background:rgba(255,255,255,.06);
      color:#ffe4eb;
    }
    .content-article hr{
      border:0;
      border-top:1px solid rgba(177,198,255,.14);
      margin:1.5em 0;
    }
    .empty-state{
      display:grid;
      place-items:center;
      min-height:280px;
      text-align:center;
      padding:28px 18px;
    }
    .empty-state h2{
      margin:0 0 8px;
      font-size:1.5rem;
    }
    .empty-state p{
      margin:0 0 18px;
      color:var(--muted);
    }
    .sidebar{
      display:grid;
      gap:16px;
      position:sticky;
      top:96px;
    }
    .aside-card{
      padding:20px;
      border-radius:24px;
      border:1px solid rgba(177,198,255,.12);
      background:linear-gradient(180deg, rgba(17,32,58,.92), rgba(13,23,41,.92));
      box-shadow:var(--shadow-soft);
    }
    .aside-card h3{
      margin:0 0 12px;
      font-size:1.05rem;
    }
    .aside-card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .info-list{
      list-style:none;
      margin:14px 0 0;
      padding:0;
      display:grid;
      gap:10px;
    }
    .info-list li{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:flex-start;
      padding:10px 0;
      border-bottom:1px dashed rgba(177,198,255,.12);
      color:#e7efff;
      font-size:.94rem;
    }
    .info-list li:last-child{border-bottom:0;padding-bottom:0}
    .info-list span:first-child{color:var(--muted)}
    .cover-block{
      overflow:hidden;
      border-radius:20px;
      border:1px solid rgba(177,198,255,.12);
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
    }
    .cover-block img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }
    .cover-block .caption{
      padding:14px 16px 16px;
      color:var(--muted);
      font-size:.92rem;
    }
    .tag-list{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:12px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      border:1px solid rgba(177,198,255,.13);
      background:rgba(255,255,255,.04);
      color:#dfe8ff;
      font-size:.88rem;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
    }
    .mini-card{
      overflow:hidden;
      border-radius:22px;
      border:1px solid rgba(177,198,255,.12);
      background:linear-gradient(180deg, rgba(17,32,58,.92), rgba(13,23,41,.92));
      box-shadow:var(--shadow-soft);
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
    }
    .mini-card:hover{
      transform:translateY(-3px);
      box-shadow:0 18px 40px rgba(0,0,0,.28);
      border-color:rgba(255,255,255,.18);
    }
    .mini-card img{
      width:100%;
      aspect-ratio:16/9;
      object-fit:cover;
    }
    .mini-card .mini-body{
      padding:14px 14px 16px;
    }
    .mini-card h3{
      margin:0 0 8px;
      font-size:1rem;
      line-height:1.35;
    }
    .mini-card p{
      margin:0;
      color:var(--muted);
      font-size:.9rem;
    }
    .faq{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border-radius:18px;
      border:1px solid rgba(177,198,255,.12);
      background:rgba(255,255,255,.04);
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:16px 18px;
      font-weight:700;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      border-radius:999px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(177,198,255,.12);
      color:#fff;
      flex:none;
      transition:transform .2s var(--ease), background .2s var(--ease);
    }
    .faq-item[open] summary::after{
      content:"–";
      transform:rotate(0deg);
      background:rgba(255,255,255,.12);
    }
    .faq-item .faq-content{
      padding:0 18px 18px;
      color:var(--muted);
    }
    .cta{
      margin-top:16px;
      padding:24px;
      border-radius:28px;
      border:1px solid rgba(177,198,255,.14);
      background:
        linear-gradient(135deg, rgba(255,94,138,.18), rgba(85,214,190,.14)),
        linear-gradient(180deg, rgba(17,32,58,.96), rgba(13,23,41,.96));
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .cta::after{
      content:"";
      position:absolute;
      inset:auto -5% -20% auto;
      width:240px;
      height:240px;
      background:radial-gradient(circle, rgba(255,255,255,.14), transparent 68%);
      pointer-events:none;
    }
    .cta h2{
      margin:0 0 10px;
      font-size:1.5rem;
      line-height:1.2;
    }
    .cta p{
      margin:0;
      color:#dbe5fb;
      max-width:68ch;
    }
    .footer-spacer{height:12px}
    .site-footer{
      margin-top:20px;
      padding:24px 0 32px;
      border-top:1px solid rgba(177,198,255,.1);
      background:linear-gradient(180deg, rgba(6,12,22,.12), rgba(6,12,22,.34));
    }
    .footer-inner{
      display:grid;
      grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) auto;
      gap:20px;
      align-items:start;
    }
    .footer-brand p{
      margin:14px 0 0;
      color:var(--muted);
      max-width:52ch;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 12px;
      align-content:start;
    }
    .footer-links a{
      color:#dce7ff;
      border-bottom:1px solid transparent;
      padding:4px 0;
      transition:color .2s var(--ease), border-color .2s var(--ease);
    }
    .footer-links a:hover{color:#fff;border-color:rgba(255,255,255,.45)}
    .copyright{
      display:grid;
      gap:10px;
      color:var(--muted);
      font-size:.92rem;
      text-align:right;
      white-space:nowrap;
    }
    .sep{
      width:100%;
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(177,198,255,.16), transparent);
      margin:20px 0;
    }
    .article-toolbar{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .article-toolbar .btn{
      min-height:40px;
      padding:0 14px;
      font-size:.92rem;
    }
    .notice{
      padding:14px 16px;
      border-radius:16px;
      border:1px solid rgba(255,209,102,.18);
      background:rgba(255,209,102,.08);
      color:#ffe9af;
      font-size:.94rem;
      margin:0 0 18px;
    }
    @media (max-width: 1080px){
      .hero-inner,
      .content-grid,
      .footer-inner{
        grid-template-columns:1fr;
      }
      .sidebar{position:static}
      .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 860px){
      .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
      .nav-wrap{position:relative}
      .nav-list{
        position:absolute;
        right:0;
        top:58px;
        min-width:min(360px, calc(100vw - 28px));
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        border-radius:20px;
        border:1px solid rgba(177,198,255,.14);
        background:rgba(8,16,29,.96);
        box-shadow:var(--shadow);
        display:none;
      }
      .nav-list.is-open{display:flex}
      .nav-list a{width:100%;justify-content:center}
      .stats-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .related-grid{grid-template-columns:1fr}
      .footer-inner{gap:14px}
      .copyright{text-align:left;white-space:normal}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .hero-inner{padding:20px}
      .hero{padding-top:18px}
      .hero h1{font-size:1.9rem}
      .panel-pad,.cta,.aside-card{padding:18px}
      .image-card{min-height:260px}
      .btn{width:100%}
      .hero-actions,.article-toolbar{display:grid}
      .section{padding:14px 0}
      .nav-list{min-width:calc(100vw - 20px)}
      .hero-lead,.section-desc,.cta p,.footer-brand p{font-size:.95rem}
    }

/* roulang page: category4 */
:root {
      --bg: #0a0d14;
      --bg-soft: #101624;
      --bg-elev: #141c2e;
      --panel: rgba(17, 23, 38, 0.84);
      --panel-strong: rgba(22, 30, 49, 0.96);
      --text: #f4f7fb;
      --muted: #a8b2c8;
      --line: rgba(255, 255, 255, 0.10);
      --primary: #ff4d7d;
      --primary-2: #ff7a59;
      --accent: #38c2ff;
      --good: #6ee7b7;
      --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.18);
      --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.28);
      --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.42);
      --radius-sm: 14px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --container: 1180px;
      --gap: 24px;
      --space-1: 8px;
      --space-2: 12px;
      --space-3: 16px;
      --space-4: 20px;
      --space-5: 28px;
      --space-6: 36px;
      --space-7: 48px;
      --space-8: 72px;
    }

    *, *::before, *::after { box-sizing: border-box; }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      margin: 0;
      font-family: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
      color: var(--text);
      line-height: 1.7;
      background:
        radial-gradient(circle at top left, rgba(255, 77, 125, 0.16), transparent 28%),
        radial-gradient(circle at top right, rgba(56, 194, 255, 0.12), transparent 22%),
        linear-gradient(180deg, #090c13 0%, #0b0f19 32%, #0a0d14 100%);
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
      background-size: 40px 40px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,0.28), transparent 78%);
      opacity: 0.34;
      z-index: 0;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.22s ease, opacity 0.22s ease, transform 0.22s ease, background-color 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    button {
      border: 0;
      background: none;
      padding: 0;
      cursor: pointer;
    }

    :focus-visible {
      outline: 3px solid rgba(56, 194, 255, 0.8);
      outline-offset: 3px;
    }

    .container {
      width: min(calc(100% - 32px), var(--container));
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      background: rgba(8, 11, 17, 0.74);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--gap);
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 14px;
      min-width: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,0.9), rgba(255,255,255,0.18) 22%, transparent 23%),
        linear-gradient(135deg, var(--primary), var(--primary-2) 48%, #ff9b5e);
      box-shadow: 0 10px 30px rgba(255, 77, 125, 0.32);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 10px;
      border-radius: 10px;
      border: 1px solid rgba(255,255,255,0.32);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 2px;
      font-size: 18px;
      font-weight: 800;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--muted);
      font-weight: 500;
      letter-spacing: 0.04em;
      white-space: nowrap;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 14px;
      color: var(--text);
      background: rgba(255,255,255,0.06);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
    }

    .nav-toggle:hover {
      transform: translateY(-1px);
      background: rgba(255,255,255,0.09);
      border-color: rgba(255,255,255,0.2);
    }

    .nav-list {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 0;
      padding: 0;
    }

    .nav-list a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 16px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid transparent;
      background: transparent;
      font-weight: 600;
      letter-spacing: 0.01em;
    }

    .nav-list a:hover,
    .nav-list a:focus-visible {
      color: var(--text);
      background: rgba(255,255,255,0.05);
      border-color: rgba(255,255,255,0.08);
      transform: translateY(-1px);
    }

    .nav-list a.active {
      color: #fff;
      background: linear-gradient(135deg, rgba(255, 77, 125, 0.18), rgba(56, 194, 255, 0.12));
      border-color: rgba(255, 77, 125, 0.35);
      box-shadow: 0 12px 28px rgba(255, 77, 125, 0.16);
    }

    main {
      position: relative;
      z-index: 1;
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 30px 0 22px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(10,13,20,0.88) 0%, rgba(10,13,20,0.72) 52%, rgba(10,13,20,0.36) 100%),
        linear-gradient(180deg, rgba(10,13,20,0.12), rgba(10,13,20,0.82));
      z-index: 0;
    }

    .hero-shell {
      position: relative;
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: 34px;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(255,77,125,0.09), rgba(56,194,255,0.06)),
        rgba(10, 13, 20, 0.38);
      box-shadow: var(--shadow-lg);
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: var(--hero-image);
      background-size: cover;
      background-position: center;
      opacity: 0.44;
      transform: scale(1.02);
      filter: saturate(1.08) contrast(1.02);
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 28px;
      padding: 38px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.12);
      color: #fff;
      font-weight: 700;
      font-size: 13px;
      letter-spacing: 0.04em;
      margin-bottom: 16px;
      width: fit-content;
    }

    .hero h1 {
      margin: 0;
      font-size: clamp(34px, 4.8vw, 58px);
      line-height: 1.05;
      letter-spacing: -0.03em;
    }

    .hero-lead {
      margin: 18px 0 0;
      max-width: 60ch;
      color: rgba(244, 247, 251, 0.88);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 20px;
      border-radius: 999px;
      font-weight: 700;
      letter-spacing: 0.01em;
      border: 1px solid transparent;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, opacity 0.2s ease;
    }

    .btn:hover,
    .btn:focus-visible {
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #ff5b88, #ff8a63);
    }

    .btn-secondary {
      color: #fff;
      background: rgba(255,255,255,0.08);
      border-color: rgba(255,255,255,0.10);
    }

    .btn-secondary:hover {
      background: rgba(255,255,255,0.12);
      border-color: rgba(255,255,255,0.18);
    }

    .chip-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 14px;
      border-radius: 999px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.10);
      color: #fff;
      font-size: 13px;
      font-weight: 600;
    }

    .hero-panel {
      display: grid;
      gap: 14px;
      align-content: start;
    }

    .glass-card {
      background: rgba(12, 16, 25, 0.72);
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: 24px;
      padding: 20px;
      box-shadow: var(--shadow-md);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }

    .glass-card h2,
    .glass-card h3,
    .section-head h2,
    .section-head h3 {
      margin: 0;
      line-height: 1.15;
    }

    .panel-title {
      font-size: 20px;
      margin-bottom: 10px;
    }

    .panel-note {
      color: var(--muted);
      margin: 0 0 14px;
      font-size: 14px;
    }

    .mini-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .mini-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: rgba(244,247,251,0.92);
      font-size: 14px;
    }

    .mini-dot {
      width: 10px;
      height: 10px;
      margin-top: 7px;
      border-radius: 50%;
      flex: 0 0 auto;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 0 0 4px rgba(255,255,255,0.04);
    }

    .preview-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .preview-card {
      position: relative;
      min-height: 174px;
      border-radius: 22px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.10);
      background: var(--bg-elev);
      box-shadow: var(--shadow-md);
    }

    .preview-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.92;
      transform: scale(1.01);
      transition: transform 0.35s ease, opacity 0.35s ease;
    }

    .preview-card:hover img {
      transform: scale(1.06);
      opacity: 1;
    }

    .preview-card::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(8,11,17,0.08), rgba(8,11,17,0.78));
    }

    .preview-copy {
      position: absolute;
      inset: auto 0 0 0;
      z-index: 1;
      padding: 16px;
    }

    .preview-badge {
      display: inline-flex;
      align-items: center;
      padding: 5px 10px;
      border-radius: 999px;
      background: rgba(255,255,255,0.12);
      color: #fff;
      border: 1px solid rgba(255,255,255,0.14);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .preview-copy strong {
      display: block;
      font-size: 17px;
      margin-bottom: 4px;
      line-height: 1.15;
    }

    .preview-copy span {
      color: rgba(244,247,251,0.82);
      font-size: 13px;
    }

    .section {
      padding: 26px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 20px;
    }

    .section-head h2 {
      font-size: clamp(24px, 2.8vw, 34px);
    }

    .section-head p {
      margin: 0;
      color: var(--muted);
      max-width: 64ch;
      font-size: 15px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .feature-card,
    .spotlight-card,
    .step-card,
    .value-card,
    .faq-item,
    .cta-panel {
      background: linear-gradient(180deg, rgba(20, 28, 46, 0.94), rgba(14, 19, 31, 0.98));
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: 24px;
      box-shadow: var(--shadow-sm);
    }

    .feature-card {
      padding: 22px;
      min-height: 200px;
      display: flex;
      flex-direction: column;
      gap: 14px;
      transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 77, 125, 0.22);
      box-shadow: var(--shadow-md);
    }

    .icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(255,77,125,0.18), rgba(56,194,255,0.14));
      border: 1px solid rgba(255,255,255,0.08);
      color: #fff;
      font-size: 22px;
      flex: 0 0 auto;
    }

    .feature-card h3,
    .spotlight-card h3,
    .step-card h3,
    .value-card h3 {
      margin: 0;
      font-size: 18px;
      line-height: 1.3;
    }

    .feature-card p,
    .spotlight-card p,
    .step-card p,
    .value-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .feature-meta {
      margin-top: auto;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 0 11px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.10);
      background: rgba(255,255,255,0.04);
      color: rgba(244,247,251,0.88);
      font-size: 12px;
      font-weight: 600;
    }

    .spotlight-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .spotlight-card {
      overflow: hidden;
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .spotlight-card:hover {
      transform: translateY(-4px);
      border-color: rgba(56, 194, 255, 0.24);
      box-shadow: var(--shadow-md);
    }

    .spotlight-media {
      position: relative;
      aspect-ratio: 4 / 3;
      overflow: hidden;
      background: #111827;
    }

    .spotlight-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.34s ease, opacity 0.34s ease;
      opacity: 0.95;
    }

    .spotlight-card:hover .spotlight-media img {
      transform: scale(1.07);
    }

    .spotlight-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(10,13,20,0.02), rgba(10,13,20,0.72));
    }

    .spotlight-body {
      padding: 18px;
      display: grid;
      gap: 10px;
    }

    .spotlight-topline {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
    }

    .spotlight-body .small {
      color: var(--muted);
      font-size: 13px;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #fff;
      width: fit-content;
      font-size: 14px;
      font-weight: 700;
    }

    .card-link::after {
      content: "→";
      transition: transform 0.2s ease;
    }

    .card-link:hover::after {
      transform: translateX(3px);
    }

    .guide-wrap {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 18px;
    }

    .guide-panel,
    .values-panel {
      padding: 24px;
    }

    .timeline {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
      display: grid;
      gap: 14px;
    }

    .timeline li {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      align-items: start;
      padding: 14px;
      border-radius: 18px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.06);
    }

    .timeline-num {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(255,77,125,0.20), rgba(56,194,255,0.16));
      color: #fff;
      font-weight: 800;
      box-shadow: 0 10px 24px rgba(255, 77, 125, 0.18);
    }

    .timeline h3 {
      margin: 0 0 4px;
      font-size: 16px;
    }

    .timeline p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .values-grid {
      display: grid;
      gap: 14px;
    }

    .value-card {
      padding: 18px;
      display: grid;
      gap: 10px;
    }

    .value-row {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .value-spot {
      width: 38px;
      height: 38px;
      border-radius: 13px;
      background: linear-gradient(135deg, rgba(255,77,125,0.15), rgba(56,194,255,0.12));
      border: 1px solid rgba(255,255,255,0.08);
      flex: 0 0 auto;
    }

    .faq-wrap {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      padding: 4px 20px;
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 0;
      font-weight: 700;
      font-size: 16px;
    }

    .faq-item summary::-webkit-details-marker { display: none; }

    .faq-item summary::after {
      content: "+";
      width: 32px;
      height: 32px;
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      background: rgba(255,255,255,0.06);
      color: #fff;
      transition: transform 0.2s ease, background-color 0.2s ease;
    }

    .faq-item[open] summary::after {
      content: "–";
      background: rgba(255, 77, 125, 0.16);
    }

    .faq-item p {
      margin: 0 0 18px;
      color: var(--muted);
      font-size: 14px;
      max-width: 74ch;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      padding: 28px;
      background:
        linear-gradient(135deg, rgba(255,77,125,0.15), rgba(56,194,255,0.10)),
        linear-gradient(180deg, rgba(20, 28, 46, 0.96), rgba(12, 17, 28, 0.98));
    }

    .cta-panel::before {
      content: "";
      position: absolute;
      inset: auto -20% -60% auto;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(255, 122, 89, 0.24), transparent 70%);
      filter: blur(8px);
      pointer-events: none;
    }

    .cta-inner {
      position: relative;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 18px;
      align-items: center;
    }

    .cta-panel h2 {
      margin: 0;
      font-size: clamp(24px, 3vw, 36px);
      line-height: 1.15;
    }

    .cta-panel p {
      margin: 12px 0 0;
      color: var(--muted);
      max-width: 60ch;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .cta-quote {
      margin: 0;
      padding: 18px 20px;
      border-radius: 20px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
      color: rgba(244,247,251,0.92);
      font-size: 14px;
    }

    .site-footer {
      margin-top: 28px;
      padding: 28px 0 40px;
      border-top: 1px solid var(--line);
      background: rgba(7, 10, 15, 0.78);
      position: relative;
      z-index: 1;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 0.6fr;
      gap: 22px;
      align-items: start;
    }

    .footer-brand p {
      margin: 14px 0 0;
      color: var(--muted);
      max-width: 52ch;
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
      justify-items: start;
    }

    .footer-links a {
      color: var(--muted);
      font-weight: 600;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      color: #fff;
      transform: translateX(2px);
    }

    .copyright {
      display: grid;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
      justify-items: end;
      text-align: right;
    }

    .section-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.10), transparent);
      margin: 6px 0;
    }

    .quick-form {
      display: grid;
      gap: 10px;
    }

    .quick-form label {
      font-size: 13px;
      color: rgba(244,247,251,0.82);
      font-weight: 700;
    }

    .search-row {
      display: flex;
      gap: 10px;
    }

    .search-row input {
      flex: 1;
      min-width: 0;
      height: 48px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.10);
      background: rgba(255,255,255,0.06);
      color: var(--text);
      padding: 0 16px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
      transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
    }

    .search-row input::placeholder {
      color: rgba(168, 178, 200, 0.8);
    }

    .search-row input:focus {
      outline: none;
      border-color: rgba(56,194,255,0.44);
      background: rgba(255,255,255,0.08);
      box-shadow: 0 0 0 4px rgba(56,194,255,0.10);
    }

    .search-row .btn {
      white-space: nowrap;
    }

    .badge-line {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 14px;
    }

    .mini-badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      background: rgba(255,255,255,0.05);
      color: rgba(244,247,251,0.82);
      border: 1px solid rgba(255,255,255,0.08);
      font-size: 12px;
      font-weight: 600;
    }

    @media (max-width: 1024px) {
      .hero-inner,
      .guide-wrap,
      .cta-inner,
      .footer-inner {
        grid-template-columns: 1fr;
      }

      .grid-4,
      .spotlight-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .footer-inner {
        gap: 18px;
      }

      .copyright {
        justify-items: start;
        text-align: left;
      }

      .cta-actions {
        justify-content: flex-start;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        min-height: 70px;
      }

      .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .nav-wrap {
        position: relative;
      }

      .nav-list {
        position: absolute;
        top: calc(100% + 12px);
        right: 0;
        width: min(84vw, 320px);
        padding: 12px;
        border-radius: 20px;
        background: rgba(11, 15, 25, 0.96);
        border: 1px solid rgba(255,255,255,0.10);
        box-shadow: var(--shadow-lg);
        display: grid;
        gap: 8px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
      }

      .nav-wrap.nav-open .nav-list {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
      }

      .nav-list a {
        justify-content: flex-start;
        width: 100%;
        border-radius: 16px;
        padding: 0 14px;
      }

      .hero {
        padding-top: 18px;
      }

      .hero-shell {
        border-radius: 28px;
      }

      .hero-inner {
        padding: 26px;
      }

      .section {
        padding: 20px 0;
      }

      .section-head {
        flex-direction: column;
        align-items: start;
      }

      .grid-4,
      .spotlight-grid,
      .preview-grid {
        grid-template-columns: 1fr;
      }

      .search-row {
        flex-direction: column;
      }

      .search-row .btn {
        width: 100%;
      }

      .hero-actions,
      .chip-row,
      .badge-line {
        gap: 10px;
      }

      .cta-panel {
        padding: 22px;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(calc(100% - 20px), var(--container));
      }

      .brand-text {
        font-size: 16px;
      }

      .brand-sub {
        display: none;
      }

      .hero h1 {
        font-size: 32px;
      }

      .hero-lead {
        font-size: 15px;
      }

      .hero-inner {
        padding: 20px;
      }

      .glass-card,
      .feature-card,
      .spotlight-card,
      .step-card,
      .value-card,
      .faq-item {
        border-radius: 20px;
      }

      .btn {
        width: 100%;
      }

      .hero-actions {
        display: grid;
      }

      .cta-actions {
        display: grid;
      }

      .timeline li {
        grid-template-columns: 1fr;
      }

      .timeline-num {
        width: 36px;
        height: 36px;
      }
    }

/* roulang page: category3 */
:root {
      --bg: #0f1117;
      --bg-soft: #171a22;
      --bg-card: #ffffff;
      --bg-warm: #fff7f0;
      --text: #20232d;
      --text-invert: #f8fafc;
      --muted: #687082;
      --muted-invert: #c7ccd6;
      --primary: #e4495f;
      --primary-dark: #be3047;
      --secondary: #16a085;
      --accent: #f6b84b;
      --line: rgba(32, 35, 45, .12);
      --line-dark: rgba(255, 255, 255, .14);
      --shadow: 0 18px 50px rgba(15, 17, 23, .14);
      --shadow-soft: 0 10px 28px rgba(15, 17, 23, .09);
      --radius: 8px;
      --radius-lg: 14px;
      --container: 1180px;
      --section: 88px;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      min-height: 100vh;
      color: var(--text);
      background: #fafbfc;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease);
    }

    img {
      display: block;
      width: 100%;
      height: auto;
    }

    button,
    input {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(15, 17, 23, .92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line-dark);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 auto;
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(255,255,255,.22), transparent 42%),
        linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 12px 24px rgba(228, 73, 95, .28);
      position: relative;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 11px;
      border: 2px solid rgba(255,255,255,.78);
      border-left-color: transparent;
      border-bottom-color: transparent;
      transform: rotate(45deg);
    }

    .brand-text {
      display: grid;
      gap: 2px;
      color: var(--text-invert);
      font-weight: 800;
      font-size: 18px;
      line-height: 1.2;
      white-space: nowrap;
    }

    .brand-sub {
      display: block;
      color: var(--muted-invert);
      font-weight: 500;
      font-size: 12px;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 8px;
      color: var(--text-invert);
      background: rgba(255,255,255,.09);
      border: 1px solid var(--line-dark);
    }

    .nav-toggle:hover,
    .nav-toggle:focus-visible {
      background: rgba(255,255,255,.15);
      outline: none;
    }

    .nav-list {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-list a {
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 0 14px;
      border-radius: 8px;
      color: var(--muted-invert);
      font-size: 14px;
      font-weight: 700;
      border: 1px solid transparent;
    }

    .nav-list a:hover,
    .nav-list a:focus-visible {
      color: var(--text-invert);
      background: rgba(255,255,255,.08);
      border-color: rgba(255,255,255,.12);
      outline: none;
    }

    .nav-list a.active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #d93d75);
      box-shadow: 0 10px 22px rgba(228, 73, 95, .24);
    }

    .hero {
      position: relative;
      color: var(--text-invert);
      background:
        linear-gradient(90deg, rgba(15,17,23,.91) 0%, rgba(15,17,23,.72) 48%, rgba(15,17,23,.36) 100%),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      overflow: hidden;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 110px;
      background: linear-gradient(0deg, #fafbfc, rgba(250,251,252,0));
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      min-height: 560px;
      display: grid;
      align-items: center;
      padding: 74px 0 92px;
    }

    .hero-content {
      max-width: 760px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: #fff;
      background: rgba(228, 73, 95, .22);
      border: 1px solid rgba(255,255,255,.2);
      font-size: 13px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(246,184,75,.16);
    }

    h1 {
      margin-top: 22px;
      max-width: 900px;
      font-size: clamp(36px, 5vw, 66px);
      line-height: 1.08;
      letter-spacing: 0;
      font-weight: 900;
    }

    .hero-lead {
      margin-top: 22px;
      max-width: 720px;
      color: rgba(248,250,252,.86);
      font-size: 18px;
    }

    .hero-actions {
      margin-top: 34px;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 0 20px;
      border-radius: 8px;
      font-weight: 800;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease);
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn:focus-visible {
      outline: 3px solid rgba(246,184,75,.42);
      outline-offset: 3px;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #d83b73);
      box-shadow: 0 16px 34px rgba(228,73,95,.3);
    }

    .btn-primary:hover {
      box-shadow: 0 20px 42px rgba(228,73,95,.4);
    }

    .btn-ghost {
      color: #fff;
      background: rgba(255,255,255,.1);
      border-color: rgba(255,255,255,.24);
    }

    .btn-ghost:hover {
      background: rgba(255,255,255,.16);
    }

    .hero-metrics {
      margin-top: 42px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      max-width: 720px;
    }

    .metric {
      padding: 18px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.1);
      border: 1px solid rgba(255,255,255,.16);
      backdrop-filter: blur(10px);
    }

    .metric strong {
      display: block;
      color: #fff;
      font-size: 24px;
      line-height: 1.1;
    }

    .metric span {
      display: block;
      margin-top: 6px;
      color: rgba(248,250,252,.72);
      font-size: 13px;
    }

    main {
      background: #fafbfc;
    }

    .section {
      padding: var(--section) 0;
    }

    .section.alt {
      background: var(--bg-warm);
    }

    .section.dark {
      color: var(--text-invert);
      background: var(--bg);
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 30px;
      margin-bottom: 34px;
    }

    .section-kicker {
      color: var(--primary);
      font-weight: 900;
      font-size: 14px;
    }

    .section-title {
      margin-top: 8px;
      max-width: 760px;
      font-size: clamp(28px, 3.2vw, 42px);
      line-height: 1.18;
      letter-spacing: 0;
      font-weight: 900;
    }

    .section-desc {
      max-width: 470px;
      color: var(--muted);
      font-size: 15px;
    }

    .dark .section-desc,
    .dark .card p,
    .dark .feature-list li {
      color: var(--muted-invert);
    }

    .grid {
      display: grid;
      gap: 22px;
    }

    .grid-3 {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .grid-2 {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(228,73,95,.26);
    }

    .card-body {
      padding: 24px;
    }

    .card h3 {
      font-size: 21px;
      line-height: 1.3;
      margin-bottom: 10px;
    }

    .card p {
      color: var(--muted);
      font-size: 15px;
    }

    .card-media {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #e9edf2;
    }

    .card-media img {
      height: 100%;
      object-fit: cover;
      transition: transform 240ms ease;
    }

    .card:hover .card-media img {
      transform: scale(1.04);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      width: fit-content;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: rgba(228,73,95,.1);
      font-size: 12px;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 12px;
      border-radius: 999px;
      color: #474d5b;
      background: #f2f4f7;
      border: 1px solid rgba(32,35,45,.08);
      font-size: 13px;
      font-weight: 800;
    }

    .feature-panel {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 34px;
      align-items: center;
    }

    .feature-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
      background: #dfe4eb;
    }

    .feature-image img {
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .feature-copy h2 {
      font-size: clamp(28px, 3vw, 40px);
      line-height: 1.18;
      margin-bottom: 16px;
    }

    .feature-copy p {
      color: var(--muted);
      margin-bottom: 22px;
    }

    .feature-list {
      list-style: none;
      display: grid;
      gap: 14px;
    }

    .feature-list li {
      display: flex;
      gap: 12px;
      color: #3b4050;
      font-weight: 700;
    }

    .feature-list li::before {
      content: "";
      width: 10px;
      height: 10px;
      margin-top: 8px;
      flex: 0 0 auto;
      border-radius: 999px;
      background: var(--secondary);
      box-shadow: 0 0 0 5px rgba(22,160,133,.12);
    }

    .steps {
      counter-reset: step;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .step {
      counter-increment: step;
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .step::before {
      content: counter(step, decimal-leading-zero);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      margin-bottom: 18px;
      border-radius: 8px;
      color: #fff;
      background: var(--bg);
      font-weight: 900;
    }

    .step h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }

    .step p {
      color: var(--muted);
      font-size: 14px;
    }

    .spotlight-strip {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
      align-items: stretch;
    }

    .highlight {
      min-height: 360px;
      padding: 34px;
      border-radius: var(--radius-lg);
      color: #fff;
      background:
        linear-gradient(135deg, rgba(15,17,23,.84), rgba(228,73,95,.58)),
        url("/assets/images/coverpic/cover-8.webp") center/cover no-repeat;
      display: flex;
      flex-direction: column;
      justify-content: end;
      overflow: hidden;
    }

    .highlight h2 {
      max-width: 650px;
      font-size: clamp(28px, 3vw, 44px);
      line-height: 1.16;
      margin-bottom: 12px;
    }

    .highlight p {
      max-width: 620px;
      color: rgba(255,255,255,.84);
    }

    .quick-box {
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .quick-box h3 {
      font-size: 24px;
      margin-bottom: 16px;
    }

    .quick-links {
      display: grid;
      gap: 12px;
      list-style: none;
    }

    .quick-links a {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding: 14px 16px;
      border-radius: 8px;
      color: #2e3441;
      background: #f7f8fa;
      border: 1px solid transparent;
      font-weight: 800;
    }

    .quick-links a:hover,
    .quick-links a:focus-visible {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(228,73,95,.2);
      outline: none;
      transform: translateX(3px);
    }

    .quick-links a::after {
      content: "›";
      color: var(--primary);
      font-size: 20px;
      line-height: 1;
    }

    .faq {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 36px;
      align-items: start;
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      padding: 22px 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .faq-item h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }

    .faq-item p {
      color: var(--muted);
      font-size: 15px;
    }

    .cta {
      padding: 54px;
      border-radius: var(--radius-lg);
      color: #fff;
      background:
        linear-gradient(135deg, rgba(228,73,95,.92), rgba(15,17,23,.92)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
      box-shadow: var(--shadow);
    }

    .cta h2 {
      font-size: clamp(28px, 3vw, 42px);
      line-height: 1.18;
      margin-bottom: 12px;
    }

    .cta p {
      color: rgba(255,255,255,.84);
      max-width: 720px;
    }

    .cta .btn {
      background: #fff;
      color: var(--primary-dark);
      box-shadow: 0 16px 30px rgba(0,0,0,.2);
      white-space: nowrap;
    }

    .site-footer {
      color: var(--text-invert);
      background: #0b0d12;
      border-top: 1px solid var(--line-dark);
    }

    .footer-inner {
      padding: 48px 0 34px;
      display: grid;
      gap: 28px;
    }

    .footer-brand {
      display: grid;
      gap: 16px;
      max-width: 760px;
    }

    .footer-brand p {
      color: var(--muted-invert);
      max-width: 760px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding-top: 8px;
    }

    .footer-links a {
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      padding: 0 12px;
      border-radius: 8px;
      color: var(--muted-invert);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.08);
      font-size: 14px;
      font-weight: 700;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      color: #fff;
      background: rgba(255,255,255,.12);
      outline: none;
    }

    .copyright {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 22px;
      padding-top: 22px;
      border-top: 1px solid var(--line-dark);
      color: rgba(248,250,252,.62);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      :root {
        --section: 72px;
      }

      .header-inner {
        gap: 18px;
      }

      .nav-list a {
        padding: 0 10px;
        font-size: 13px;
      }

      .hero-inner {
        min-height: 520px;
      }

      .grid-3,
      .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .feature-panel,
      .spotlight-strip,
      .faq,
      .cta {
        grid-template-columns: 1fr;
      }

      .cta {
        padding: 42px;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .header-inner {
        min-height: 68px;
      }

      .brand-text {
        font-size: 16px;
      }

      .brand-sub {
        display: none;
      }

      .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .nav-list {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 68px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        border-radius: 12px;
        background: rgba(15,17,23,.98);
        border: 1px solid var(--line-dark);
        box-shadow: 0 22px 42px rgba(0,0,0,.28);
      }

      .nav-list.open {
        display: flex;
      }

      .nav-list a {
        justify-content: center;
      }

      .hero {
        background-position: center;
      }

      .hero-inner {
        min-height: auto;
        padding: 58px 0 82px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .hero-metrics {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: grid;
        gap: 14px;
      }

      .grid-2,
      .grid-3,
      .steps {
        grid-template-columns: 1fr;
      }

      .card-body,
      .quick-box,
      .step,
      .faq-item {
        padding: 20px;
      }

      .highlight {
        min-height: 300px;
        padding: 26px;
      }

      .cta {
        padding: 30px;
      }

      .footer-links {
        display: grid;
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      :root {
        --section: 58px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
      }

      h1 {
        font-size: 34px;
      }

      .hero-actions {
        display: grid;
      }

      .btn {
        width: 100%;
      }

      .metric {
        padding: 16px;
      }

      .section-title {
        font-size: 27px;
      }

      .tag-row {
        gap: 8px;
      }

      .copyright {
        display: grid;
        gap: 8px;
      }
    }

/* roulang page: category2 */
:root{
      --bg:#0b0d14;
      --bg-soft:#121725;
      --bg-card:#171d2e;
      --bg-card-2:#101624;
      --text:#f7f3ef;
      --muted:#aeb6c8;
      --weak:#7f8aa3;
      --primary:#ff4d6d;
      --primary-dark:#d93454;
      --secondary:#7c5cff;
      --accent:#ffd166;
      --line:rgba(255,255,255,.1);
      --line-strong:rgba(255,255,255,.18);
      --shadow:0 24px 70px rgba(0,0,0,.38);
      --shadow-soft:0 16px 40px rgba(0,0,0,.24);
      --radius-lg:28px;
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
      --font:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:var(--font);
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%,rgba(255,77,109,.22),transparent 34%),
        radial-gradient(circle at 88% 18%,rgba(124,92,255,.18),transparent 36%),
        linear-gradient(180deg,#080a10 0%,#0b0d14 48%,#10131d 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    body.nav-open{overflow:hidden}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(255,77,109,.35);color:#fff}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      backdrop-filter:blur(18px);
      background:rgba(9,12,19,.78);
      border-bottom:1px solid var(--line);
      transition:box-shadow .25s ease,background .25s ease;
    }
    .site-header.is-scrolled{box-shadow:0 12px 34px rgba(0,0,0,.28);background:rgba(9,12,19,.92)}
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
      transition:transform .2s ease,opacity .2s ease;
    }
    .brand:hover{transform:translateY(-1px)}
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.22),transparent 40%),
        linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 28px rgba(255,77,109,.26);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:11px;
      border-radius:50%;
      border:2px solid rgba(255,255,255,.74);
      box-shadow:0 0 0 5px rgba(255,255,255,.08);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      font-weight:900;
      letter-spacing:.02em;
      font-size:18px;
      line-height:1.2;
      white-space:nowrap;
    }
    .brand-sub{
      margin-top:3px;
      color:var(--muted);
      font-size:12px;
      font-weight:600;
      letter-spacing:0;
    }
    .nav-wrap{display:flex;align-items:center;gap:12px}
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid var(--line);
      transition:background .2s ease,transform .2s ease;
    }
    .nav-toggle:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
    .nav-toggle:focus-visible,.btn:focus-visible,.search-box input:focus-visible,.footer-links a:focus-visible,.nav-list a:focus-visible{
      outline:3px solid rgba(255,209,102,.5);
      outline-offset:3px;
    }
    .nav-list{
      display:flex;
      align-items:center;
      gap:6px;
      list-style:none;
    }
    .nav-list a{
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:9px 14px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      transition:color .2s ease,background .2s ease,transform .2s ease;
    }
    .nav-list a:hover{color:#fff;background:rgba(255,255,255,.08);transform:translateY(-1px)}
    .nav-list a.active{
      color:#fff;
      background:linear-gradient(135deg,rgba(255,77,109,.95),rgba(124,92,255,.9));
      box-shadow:0 12px 28px rgba(255,77,109,.22);
    }
    main{position:relative}
    .page-hero{
      position:relative;
      padding:86px 0 72px;
      overflow:hidden;
      border-bottom:1px solid var(--line);
    }
    .page-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(8,10,16,.95) 0%,rgba(8,10,16,.74) 48%,rgba(8,10,16,.88) 100%),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      transform:scale(1.02);
      z-index:-2;
    }
    .page-hero::after{
      content:"";
      position:absolute;
      width:520px;
      height:520px;
      right:-170px;
      top:-180px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,77,109,.34),transparent 68%);
      z-index:-1;
    }
    .hero-layout{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);
      gap:48px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 13px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.08);
      color:#fff;
      font-size:13px;
      font-weight:800;
      margin-bottom:18px;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 6px rgba(255,209,102,.12);
    }
    h1{
      font-size:clamp(34px,5vw,64px);
      line-height:1.08;
      letter-spacing:-.045em;
      max-width:820px;
      margin-bottom:18px;
    }
    .hero-text{
      color:var(--muted);
      font-size:18px;
      max-width:720px;
      margin-bottom:28px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      align-items:center;
      margin-bottom:26px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 20px;
      border-radius:999px;
      font-weight:850;
      border:1px solid transparent;
      transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 16px 34px rgba(255,77,109,.28);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 44px rgba(255,77,109,.36)}
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:var(--line-strong);
    }
    .btn-ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.13)}
    .hero-note{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--weak);
      font-size:13px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.07);
      border:1px solid var(--line);
      color:var(--muted);
      font-weight:700;
    }
    .hero-visual{
      position:relative;
      min-height:420px;
      border-radius:var(--radius-lg);
      overflow:hidden;
      box-shadow:var(--shadow);
      border:1px solid rgba(255,255,255,.16);
      background:var(--bg-card);
    }
    .hero-visual img{
      width:100%;
      height:420px;
      object-fit:cover;
      filter:saturate(1.1) contrast(1.05);
    }
    .visual-panel{
      position:absolute;
      left:22px;
      right:22px;
      bottom:22px;
      padding:18px;
      border-radius:22px;
      background:rgba(10,13,21,.78);
      backdrop-filter:blur(16px);
      border:1px solid rgba(255,255,255,.16);
    }
    .visual-panel strong{
      display:block;
      font-size:18px;
      margin-bottom:6px;
    }
    .visual-panel p{color:var(--muted);font-size:14px}
    .section{padding:82px 0}
    .section.compact{padding:64px 0}
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--accent);
      font-weight:900;
      font-size:13px;
      letter-spacing:.12em;
      text-transform:uppercase;
      margin-bottom:8px;
    }
    h2{
      font-size:clamp(26px,3vw,42px);
      line-height:1.18;
      letter-spacing:-.028em;
      max-width:760px;
    }
    .section-desc{
      color:var(--muted);
      max-width:520px;
      font-size:16px;
    }
    .grid{
      display:grid;
      gap:22px;
    }
    .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
    .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
    .card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius);
      background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.04));
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
      transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
    }
    .card:hover{
      transform:translateY(-5px);
      border-color:rgba(255,77,109,.42);
      box-shadow:0 24px 54px rgba(0,0,0,.34);
      background:linear-gradient(180deg,rgba(255,255,255,.1),rgba(255,255,255,.045));
    }
    .feature-card{padding:26px}
    .icon{
      width:48px;
      height:48px;
      display:grid;
      place-items:center;
      border-radius:16px;
      background:linear-gradient(135deg,rgba(255,77,109,.22),rgba(124,92,255,.2));
      border:1px solid rgba(255,255,255,.13);
      margin-bottom:18px;
      color:#fff;
      font-weight:900;
    }
    .card h3{
      font-size:21px;
      line-height:1.32;
      margin-bottom:10px;
      letter-spacing:-.01em;
    }
    .card p{color:var(--muted);font-size:15px}
    .media-card img{
      width:100%;
      height:210px;
      object-fit:cover;
    }
    .media-body{padding:22px}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}
    .tag{
      display:inline-flex;
      align-items:center;
      border:1px solid var(--line);
      background:rgba(255,255,255,.06);
      color:var(--muted);
      border-radius:999px;
      padding:6px 10px;
      font-size:12px;
      font-weight:800;
    }
    .split{
      display:grid;
      grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
      gap:40px;
      align-items:center;
      padding:34px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:
        radial-gradient(circle at 18% 16%,rgba(255,77,109,.16),transparent 34%),
        linear-gradient(135deg,rgba(255,255,255,.075),rgba(255,255,255,.035));
      box-shadow:var(--shadow-soft);
    }
    .split-image{
      border-radius:24px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.14);
      box-shadow:0 18px 46px rgba(0,0,0,.3);
    }
    .split-image img{width:100%;height:420px;object-fit:cover}
    .check-list{
      list-style:none;
      display:grid;
      gap:14px;
      margin-top:22px;
    }
    .check-list li{
      display:flex;
      align-items:flex-start;
      gap:12px;
      color:var(--muted);
      padding:14px 15px;
      border-radius:16px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
    }
    .check-list li::before{
      content:"✓";
      width:24px;
      height:24px;
      display:grid;
      place-items:center;
      border-radius:50%;
      flex:0 0 auto;
      color:#10131d;
      background:var(--accent);
      font-weight:900;
      margin-top:2px;
    }
    .process{
      counter-reset:step;
    }
    .process-card{
      padding:24px;
    }
    .process-card::before{
      counter-increment:step;
      content:"0" counter(step);
      display:inline-flex;
      margin-bottom:18px;
      color:#fff;
      font-size:13px;
      font-weight:900;
      letter-spacing:.08em;
      padding:7px 11px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
    }
    .notice{
      border-radius:var(--radius-lg);
      padding:28px;
      border:1px solid rgba(255,209,102,.28);
      background:
        linear-gradient(135deg,rgba(255,209,102,.1),rgba(255,77,109,.08)),
        rgba(255,255,255,.04);
      display:grid;
      grid-template-columns:auto 1fr;
      gap:18px;
      align-items:start;
    }
    .notice-badge{
      width:54px;
      height:54px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:rgba(255,209,102,.16);
      color:var(--accent);
      font-weight:950;
      border:1px solid rgba(255,209,102,.28);
    }
    .notice h2{font-size:28px;margin-bottom:8px}
    .notice p{color:var(--muted)}
    .faq-list{
      display:grid;
      gap:14px;
      max-width:920px;
      margin-inline:auto;
    }
    .faq-item{
      border-radius:20px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.055);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:center;
      padding:20px 22px;
      color:#fff;
      background:transparent;
      text-align:left;
      font-weight:900;
      transition:background .2s ease;
    }
    .faq-question:hover{background:rgba(255,255,255,.06)}
    .faq-question span:last-child{
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:rgba(255,255,255,.08);
      color:var(--accent);
      transition:transform .2s ease;
    }
    .faq-item.is-open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{
      display:none;
      padding:0 22px 22px;
      color:var(--muted);
      border-top:1px solid var(--line);
    }
    .faq-item.is-open .faq-answer{display:block}
    .cta{
      margin:18px 0 82px;
    }
    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      padding:46px;
      border:1px solid rgba(255,255,255,.16);
      background:
        linear-gradient(135deg,rgba(255,77,109,.22),rgba(124,92,255,.18)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg,rgba(9,12,19,.9),rgba(9,12,19,.62));
      z-index:0;
    }
    .cta-content{
      position:relative;
      z-index:1;
      max-width:760px;
    }
    .cta-content h2{margin-bottom:12px}
    .cta-content p{color:var(--muted);margin-bottom:24px}
    .search-box{
      display:flex;
      gap:10px;
      max-width:620px;
      padding:8px;
      border-radius:999px;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(14px);
    }
    .search-box input{
      flex:1;
      min-width:0;
      border:0;
      outline:0;
      color:#fff;
      background:transparent;
      padding:0 15px;
    }
    .search-box input::placeholder{color:rgba(255,255,255,.62)}
    .site-footer{
      padding:46px 0 34px;
      border-top:1px solid var(--line);
      background:#080a10;
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:34px;
      align-items:start;
    }
    .footer-brand p{
      margin-top:16px;
      color:var(--muted);
      max-width:560px;
      font-size:14px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px;
    }
    .footer-links a{
      padding:9px 12px;
      border-radius:999px;
      color:var(--muted);
      background:rgba(255,255,255,.045);
      border:1px solid var(--line);
      font-size:13px;
      font-weight:800;
      transition:color .2s ease,background .2s ease,border-color .2s ease;
    }
    .footer-links a:hover{
      color:#fff;
      background:rgba(255,77,109,.16);
      border-color:rgba(255,77,109,.32);
    }
    .copyright{
      grid-column:1/-1;
      display:flex;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
      padding-top:24px;
      border-top:1px solid var(--line);
      color:var(--weak);
      font-size:13px;
    }
    @media (max-width:1024px){
      .hero-layout,.split{grid-template-columns:1fr}
      .hero-visual{min-height:auto}
      .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
      .section-head{align-items:flex-start;flex-direction:column}
      .split-image img{height:340px}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .header-inner{min-height:68px}
      .brand-text{font-size:16px}
      .brand-sub{display:none}
      .nav-toggle{display:grid;place-items:center}
      .nav-list{
        position:fixed;
        left:14px;
        right:14px;
        top:76px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:14px;
        border-radius:24px;
        background:rgba(12,16,26,.96);
        border:1px solid var(--line-strong);
        box-shadow:var(--shadow);
      }
      body.nav-open .nav-list{display:flex}
      .nav-list a{justify-content:center;width:100%}
      .page-hero{padding:60px 0 52px}
      .hero-text{font-size:16px}
      .hero-visual img{height:320px}
      .section{padding:62px 0}
      .grid-3,.grid-2{grid-template-columns:1fr}
      .split{padding:22px}
      .notice{grid-template-columns:1fr}
      .footer-inner{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
      .cta-panel{padding:32px 22px}
      .search-box{border-radius:24px;flex-direction:column}
      .search-box .btn{width:100%}
    }
    @media (max-width:520px){
      h1{font-size:34px}
      .hero-actions .btn{width:100%}
      .hero-note{flex-direction:column}
      .pill{justify-content:center}
      .media-card img{height:185px}
      .split-image img{height:250px}
      .notice h2{font-size:24px}
      .copyright{flex-direction:column}
    }