/* roulang page: index */
:root{
      --color-black:#161616;
      --color-graphite:#202020;
      --color-soft-black:#2a2a2a;
      --color-orange:#ff8a3d;
      --color-orange-dark:#ea7330;
      --color-gold:#f6a623;
      --color-green:#6cc4a1;
      --color-green-soft:#ddefe8;
      --color-bg:#f7f4ef;
      --color-bg-light:#fafaf8;
      --color-card:#ffffff;
      --color-text:#333333;
      --color-muted:#6f6f6f;
      --color-light:#999999;
      --color-border:#e8e2d8;
      --shadow-soft:0 16px 48px rgba(32,32,32,.08);
      --shadow-card:0 10px 28px rgba(32,32,32,.07);
      --shadow-hover:0 18px 42px rgba(32,32,32,.14);
      --radius-sm:12px;
      --radius-md:18px;
      --radius-lg:26px;
      --radius-xl:34px;
      --container:1200px;
      --nav-h:76px;
      --ease:cubic-bezier(.22,.61,.36,1);
    }

    *{box-sizing:border-box}
    html{
      scroll-behavior:smooth;
      scroll-padding-top:92px;
    }
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--color-text);
      background:
        radial-gradient(circle at 12% 10%, rgba(255,138,61,.10), transparent 28%),
        radial-gradient(circle at 90% 36%, rgba(108,196,161,.12), transparent 26%),
        var(--color-bg);
      line-height:1.75;
      overflow-x:hidden;
    }
    body.menu-open{overflow:hidden}
    a{
      color:inherit;
      text-decoration:none;
      transition:color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
    }
    img{
      max-width:100%;
      display:block;
      height:auto;
    }
    button,input{
      font:inherit;
    }
    button{
      border:0;
      cursor:pointer;
    }
    ::selection{
      background:rgba(255,138,61,.24);
      color:var(--color-black);
    }
    .container{
      width:min(100% - 48px, var(--container));
      margin-inline:auto;
    }
    .section{
      padding:88px 0;
      position:relative;
    }
    .section-tight{padding:68px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,138,61,.12);
      color:#8d461d;
      font-size:14px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-orange);
      box-shadow:0 0 0 5px rgba(255,138,61,.14);
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-title{
      margin:12px 0 0;
      color:var(--color-black);
      font-size:clamp(28px,3vw,38px);
      line-height:1.2;
      letter-spacing:-.02em;
    }
    .section-desc{
      max-width:620px;
      margin:0;
      color:var(--color-muted);
      font-size:16px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:46px;
      padding:13px 22px;
      border-radius:999px;
      font-weight:800;
      font-size:15px;
      white-space:nowrap;
      border:1px solid transparent;
      user-select:none;
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
    }
    .btn:focus-visible,
    .nav-link:focus-visible,
    .footer a:focus-visible,
    .faq-toggle:focus-visible,
    .search-input:focus-visible,
    .card-link:focus-visible{
      outline:3px solid rgba(255,138,61,.38);
      outline-offset:3px;
    }
    .btn:hover{
      transform:translateY(-2px);
      box-shadow:0 12px 24px rgba(255,138,61,.20);
    }
    .btn:active{
      transform:translateY(0) scale(.98);
      box-shadow:none;
    }
    .btn-primary{
      background:var(--color-orange);
      color:#1d120c;
      box-shadow:0 12px 28px rgba(255,138,61,.22);
    }
    .btn-primary:hover{
      background:var(--color-orange-dark);
      color:#fff;
    }
    .btn-secondary{
      background:rgba(255,255,255,.08);
      color:#fff;
      border-color:rgba(255,255,255,.22);
    }
    .btn-secondary:hover{
      border-color:rgba(255,138,61,.8);
      color:var(--color-orange);
      background:rgba(255,138,61,.08);
    }
    .btn-light{
      background:#fff;
      color:var(--color-black);
      border-color:var(--color-border);
    }
    .btn-light:hover{
      color:#8d461d;
      border-color:rgba(255,138,61,.55);
      box-shadow:var(--shadow-card);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(22,22,22,.94);
      backdrop-filter:saturate(130%) blur(16px);
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .nav{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#1d120c;
      background:
        linear-gradient(135deg,var(--color-orange),var(--color-gold));
      box-shadow:0 10px 22px rgba(255,138,61,.25);
      font-weight:900;
    }
    .brand-name{
      color:#fff;
      font-weight:900;
      letter-spacing:-.03em;
      font-size:18px;
      line-height:1.15;
      white-space:nowrap;
    }
    .brand-sub{
      display:block;
      color:rgba(255,255,255,.52);
      font-size:12px;
      font-weight:500;
      margin-top:2px;
      letter-spacing:0;
    }
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
      margin-left:auto;
    }
    .nav-link{
      position:relative;
      padding:10px 14px;
      border-radius:999px;
      color:rgba(255,255,255,.78);
      font-size:14px;
      font-weight:700;
    }
    .nav-link:hover{
      color:var(--color-orange);
      background:rgba(255,255,255,.06);
    }
    .nav-link.active{
      color:#fff;
      background:rgba(255,138,61,.15);
    }
    .nav-link.active::after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:5px;
      height:2px;
      border-radius:99px;
      background:var(--color-orange);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:rgba(255,255,255,.08);
      color:#fff;
      border:1px solid rgba(255,255,255,.12);
      align-items:center;
      justify-content:center;
      transition:background .22s var(--ease), transform .22s var(--ease);
    }
    .menu-toggle:hover{background:rgba(255,138,61,.16)}
    .menu-toggle:active{transform:scale(.96)}
    .menu-icon{
      width:20px;
      height:14px;
      position:relative;
      display:block;
    }
    .menu-icon span,
    .menu-icon::before,
    .menu-icon::after{
      content:"";
      position:absolute;
      left:0;
      width:100%;
      height:2px;
      border-radius:999px;
      background:#fff;
      transition:transform .22s var(--ease), opacity .22s var(--ease), top .22s var(--ease);
    }
    .menu-icon::before{top:0}
    .menu-icon span{top:6px}
    .menu-icon::after{top:12px}
    .menu-open .menu-icon::before{top:6px;transform:rotate(45deg)}
    .menu-open .menu-icon span{opacity:0}
    .menu-open .menu-icon::after{top:6px;transform:rotate(-45deg)}

    .hero{
      position:relative;
      min-height:720px;
      color:#fff;
      background:
        linear-gradient(90deg, rgba(22,22,22,.95), rgba(22,22,22,.76) 48%, rgba(22,22,22,.78)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:auto -8% -22% -8%;
      height:280px;
      background:radial-gradient(circle, rgba(255,138,61,.22), transparent 58%);
      filter:blur(14px);
      pointer-events:none;
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.78), transparent 78%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0, 1.05fr) minmax(360px, .95fr);
      gap:54px;
      align-items:center;
      padding:96px 0 86px;
    }
    .hero-copy{
      max-width:690px;
    }
    .hero-badge{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.09);
      border:1px solid rgba(255,255,255,.14);
      color:rgba(255,255,255,.84);
      font-weight:700;
      font-size:14px;
    }
    .hero-badge i{
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--color-green);
      box-shadow:0 0 0 6px rgba(108,196,161,.16);
    }
    h1{
      margin:24px 0 20px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.15;
      letter-spacing:-.045em;
      font-weight:900;
    }
    .hero-lead{
      margin:0;
      max-width:640px;
      color:rgba(255,255,255,.78);
      font-size:18px;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:34px;
    }
    .hero-notes{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:12px;
      margin-top:36px;
      max-width:680px;
    }
    .hero-note{
      padding:14px 16px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
    }
    .hero-note strong{
      display:block;
      font-size:20px;
      color:#fff;
      line-height:1.2;
    }
    .hero-note span{
      display:block;
      margin-top:4px;
      color:rgba(255,255,255,.62);
      font-size:13px;
    }
    .cinema-board{
      position:relative;
      border-radius:32px;
      background:linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.06));
      border:1px solid rgba(255,255,255,.16);
      box-shadow:0 28px 80px rgba(0,0,0,.34);
      padding:16px;
      overflow:hidden;
    }
    .cinema-board::before{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      right:-80px;
      top:-80px;
      border-radius:50%;
      background:rgba(255,138,61,.22);
      filter:blur(2px);
    }
    .player-window{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      background:#111;
      border:1px solid rgba(255,255,255,.12);
      min-height:360px;
    }
    .player-window img{
      width:100%;
      height:360px;
      object-fit:cover;
      opacity:.72;
      filter:saturate(.95) contrast(1.06);
    }
    .player-window::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(to top, rgba(0,0,0,.78), rgba(0,0,0,.1) 50%, rgba(0,0,0,.35));
    }
    .play-button{
      position:absolute;
      left:50%;
      top:45%;
      z-index:2;
      transform:translate(-50%,-50%);
      width:78px;
      height:78px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(255,138,61,.94);
      box-shadow:0 20px 44px rgba(255,138,61,.28);
    }
    .play-button::before{
      content:"";
      width:0;
      height:0;
      border-top:14px solid transparent;
      border-bottom:14px solid transparent;
      border-left:22px solid #1b120d;
      margin-left:5px;
    }
    .player-meta{
      position:absolute;
      left:20px;
      right:20px;
      bottom:18px;
      z-index:2;
    }
    .player-title{
      margin:0 0 12px;
      font-size:20px;
      font-weight:900;
    }
    .progress{
      height:7px;
      border-radius:999px;
      background:rgba(255,255,255,.18);
      overflow:hidden;
    }
    .progress span{
      display:block;
      width:68%;
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg,var(--color-orange),var(--color-gold));
    }
    .mini-panels{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
      margin-top:12px;
    }
    .mini-panel{
      padding:15px;
      border-radius:20px;
      background:rgba(22,22,22,.74);
      border:1px solid rgba(255,255,255,.12);
    }
    .mini-panel span{
      color:rgba(255,255,255,.56);
      font-size:13px;
    }
    .mini-panel strong{
      display:block;
      margin-top:4px;
      color:#fff;
      font-size:18px;
      line-height:1.25;
    }

    .info-strip{
      margin-top:-42px;
      position:relative;
      z-index:3;
    }
    .strip-card{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      border-radius:26px;
      overflow:hidden;
      background:rgba(250,250,248,.96);
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-soft);
    }
    .strip-item{
      display:flex;
      gap:14px;
      padding:25px 24px;
      border-right:1px solid var(--color-border);
    }
    .strip-item:last-child{border-right:0}
    .strip-icon{
      width:42px;
      height:42px;
      flex:0 0 42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#8d461d;
      background:rgba(255,138,61,.15);
      font-weight:900;
    }
    .strip-item h3{
      margin:0 0 3px;
      font-size:17px;
      color:var(--color-black);
    }
    .strip-item p{
      margin:0;
      color:var(--color-muted);
      font-size:14px;
      line-height:1.55;
    }

    .scenario-layout{
      display:grid;
      grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
      gap:28px;
      align-items:stretch;
    }
    .large-card{
      position:relative;
      padding:34px;
      border-radius:var(--radius-xl);
      overflow:hidden;
      color:#fff;
      background:
        linear-gradient(135deg, rgba(22,22,22,.92), rgba(32,32,32,.74)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow-soft);
      min-height:470px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .large-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(circle at 82% 18%, rgba(255,138,61,.24), transparent 28%);
      pointer-events:none;
    }
    .large-card > *{position:relative;z-index:1}
    .large-card h2{
      margin:16px 0 14px;
      font-size:clamp(28px,3vw,40px);
      line-height:1.2;
      letter-spacing:-.03em;
    }
    .large-card p{
      margin:0;
      color:rgba(255,255,255,.75);
      font-size:17px;
      line-height:1.9;
    }
    .large-card-list{
      display:grid;
      gap:12px;
      margin-top:30px;
    }
    .large-card-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      list-style:none;
      color:rgba(255,255,255,.82);
    }
    .large-card-list li::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-orange);
      margin-top:10px;
      flex:0 0 8px;
    }
    .scene-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .scene-card{
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.78);
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
    }
    .scene-card:hover{
      transform:translateY(-3px);
      border-color:rgba(255,138,61,.55);
      box-shadow:var(--shadow-hover);
      background:#fff;
    }
    .scene-icon{
      width:48px;
      height:48px;
      border-radius:16px;
      background:var(--color-green-soft);
      color:#1d6e51;
      display:grid;
      place-items:center;
      font-weight:900;
      margin-bottom:18px;
    }
    .scene-card:nth-child(2n) .scene-icon{
      background:rgba(255,138,61,.14);
      color:#8d461d;
    }
    .scene-card h3{
      margin:0 0 8px;
      font-size:20px;
      color:var(--color-black);
      line-height:1.35;
    }
    .scene-card p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
      line-height:1.75;
    }

    .feature-band{
      background:var(--color-black);
      color:#fff;
      overflow:hidden;
    }
    .feature-band::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 18% 12%, rgba(255,138,61,.18), transparent 28%),
        radial-gradient(circle at 78% 72%, rgba(108,196,161,.13), transparent 32%);
      pointer-events:none;
    }
    .feature-wrap{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1fr) minmax(0,.9fr);
      gap:44px;
      align-items:center;
    }
    .feature-copy .section-title{
      color:#fff;
    }
    .feature-copy .section-desc{
      color:rgba(255,255,255,.68);
      margin-top:16px;
    }
    .feature-list{
      display:grid;
      gap:14px;
      margin:28px 0 0;
      padding:0;
    }
    .feature-list li{
      list-style:none;
      display:flex;
      gap:14px;
      padding:16px 18px;
      border-radius:18px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:rgba(255,255,255,.78);
    }
    .feature-list li::before{
      content:"✓";
      flex:0 0 26px;
      width:26px;
      height:26px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(108,196,161,.18);
      color:var(--color-green);
      font-weight:900;
      line-height:1;
    }
    .feature-visual{
      padding:16px;
      border-radius:32px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 28px 80px rgba(0,0,0,.30);
    }
    .feature-shot{
      position:relative;
      min-height:420px;
      overflow:hidden;
      border-radius:24px;
      background:#111;
    }
    .feature-shot img{
      width:100%;
      height:420px;
      object-fit:cover;
      opacity:.82;
    }
    .feature-shot::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(to top, rgba(0,0,0,.82), rgba(0,0,0,.14));
    }
    .floating-list{
      position:absolute;
      left:18px;
      right:18px;
      bottom:18px;
      z-index:2;
      display:grid;
      gap:10px;
    }
    .floating-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 14px;
      border-radius:16px;
      background:rgba(250,250,248,.92);
      color:var(--color-black);
      border:1px solid rgba(255,255,255,.18);
    }
    .floating-row span{
      color:var(--color-muted);
      font-size:13px;
    }
    .floating-row b{
      font-size:14px;
    }

    .updates{
      background:linear-gradient(180deg, rgba(250,250,248,.78), rgba(247,244,239,.95));
    }
    .updates-layout{
      display:grid;
      grid-template-columns:340px minmax(0,1fr);
      gap:28px;
      align-items:start;
    }
    .updates-panel{
      position:sticky;
      top:104px;
      padding:28px;
      border-radius:28px;
      background:var(--color-card);
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
    }
    .updates-panel h2{
      margin:14px 0 12px;
      font-size:30px;
      line-height:1.22;
      color:var(--color-black);
      letter-spacing:-.025em;
    }
    .updates-panel p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
    }
    .search-box{
      margin-top:24px;
      display:flex;
      gap:10px;
      padding:8px;
      border-radius:18px;
      background:#f3eee6;
      border:1px solid var(--color-border);
    }
    .search-input{
      min-width:0;
      flex:1;
      border:0;
      outline:0;
      background:transparent;
      color:var(--color-text);
      padding:9px 10px;
      border-radius:12px;
    }
    .search-input::placeholder{color:var(--color-light)}
    .search-input:focus{
      background:rgba(255,255,255,.72);
      box-shadow:0 0 0 3px rgba(255,138,61,.18);
    }
    .search-btn{
      width:42px;
      border-radius:14px;
      background:var(--color-black);
      color:#fff;
      display:grid;
      place-items:center;
      transition:background .22s var(--ease), transform .22s var(--ease);
    }
    .search-btn:hover{background:var(--color-orange);color:#1d120c}
    .search-btn:active{transform:scale(.96)}
    .content-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .post-card{
      position:relative;
      min-height:236px;
      display:flex;
      flex-direction:column;
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.86);
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
      transition:transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
    }
    .post-card:hover{
      transform:translateY(-3px);
      border-color:rgba(255,138,61,.6);
      box-shadow:var(--shadow-hover);
      background:#fff;
    }
    .post-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:16px;
      color:var(--color-light);
      font-size:13px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      max-width:160px;
      min-height:26px;
      padding:4px 10px;
      border-radius:999px;
      background:var(--color-green-soft);
      color:#23684f;
      font-size:12px;
      font-weight:800;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .post-card h3{
      margin:0 0 10px;
      color:var(--color-black);
      font-size:21px;
      line-height:1.35;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
      transition:color .22s var(--ease);
    }
    .post-card:hover h3{color:#a94f1f}
    .post-card p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
      line-height:1.75;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .card-link{
      margin-top:auto;
      padding-top:20px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#8d461d;
      font-weight:800;
      font-size:14px;
      align-self:flex-start;
    }
    .card-link:hover{gap:12px;color:var(--color-orange-dark)}
    .empty-state{
      grid-column:1/-1;
      padding:46px 28px;
      border-radius:26px;
      border:1px dashed rgba(255,138,61,.48);
      background:rgba(255,255,255,.72);
      text-align:center;
      color:var(--color-muted);
      box-shadow:var(--shadow-card);
    }
    .empty-state .empty-icon{
      width:58px;
      height:58px;
      margin:0 auto 14px;
      border-radius:20px;
      display:grid;
      place-items:center;
      background:rgba(255,138,61,.14);
      color:#8d461d;
      font-weight:900;
      font-size:24px;
    }

    .steps{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:18px;
      counter-reset:step;
    }
    .step-card{
      position:relative;
      padding:28px 22px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
      overflow:hidden;
    }
    .step-card::before{
      counter-increment:step;
      content:"0" counter(step);
      display:inline-grid;
      place-items:center;
      width:42px;
      height:42px;
      border-radius:15px;
      background:var(--color-black);
      color:var(--color-orange);
      font-weight:900;
      margin-bottom:22px;
    }
    .step-card::after{
      content:"";
      position:absolute;
      top:48px;
      left:74px;
      width:calc(100% - 88px);
      height:2px;
      background:linear-gradient(90deg, rgba(255,138,61,.55), transparent);
    }
    .step-card h3{
      margin:0 0 8px;
      font-size:19px;
      color:var(--color-black);
    }
    .step-card p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
      line-height:1.75;
    }

    .proof-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:24px;
      align-items:stretch;
    }
    .proof-image{
      position:relative;
      min-height:380px;
      border-radius:30px;
      overflow:hidden;
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-soft);
    }
    .proof-image img{
      width:100%;
      height:100%;
      object-fit:cover;
      min-height:380px;
    }
    .proof-image::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(to top, rgba(22,22,22,.72), transparent 52%);
    }
    .proof-caption{
      position:absolute;
      left:26px;
      right:26px;
      bottom:24px;
      z-index:1;
      color:#fff;
    }
    .proof-caption h2{
      margin:0 0 8px;
      font-size:30px;
      line-height:1.2;
    }
    .proof-caption p{
      margin:0;
      color:rgba(255,255,255,.75);
    }
    .proof-cards{
      display:grid;
      gap:16px;
    }
    .proof-card{
      padding:24px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
    }
    .proof-card strong{
      display:block;
      color:var(--color-black);
      font-size:18px;
      margin-bottom:7px;
    }
    .proof-card p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
      line-height:1.75;
    }

    .faq-wrap{
      display:grid;
      grid-template-columns:360px minmax(0,1fr);
      gap:32px;
      align-items:start;
    }
    .faq-intro{
      padding:28px;
      border-radius:28px;
      background:var(--color-black);
      color:#fff;
      position:sticky;
      top:104px;
      overflow:hidden;
    }
    .faq-intro::after{
      content:"?";
      position:absolute;
      right:18px;
      bottom:-42px;
      color:rgba(255,255,255,.06);
      font-size:180px;
      font-weight:900;
      line-height:1;
    }
    .faq-intro h2{
      position:relative;
      z-index:1;
      margin:14px 0 12px;
      font-size:32px;
      line-height:1.2;
    }
    .faq-intro p{
      position:relative;
      z-index:1;
      margin:0;
      color:rgba(255,255,255,.68);
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border-radius:22px;
      background:#fff;
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
      overflow:hidden;
      transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
    }
    .faq-item.is-open{
      border-color:rgba(255,138,61,.60);
      box-shadow:var(--shadow-hover);
    }
    .faq-toggle{
      width:100%;
      min-height:58px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      text-align:left;
      background:transparent;
      color:var(--color-black);
      padding:20px 22px;
      font-weight:800;
      font-size:17px;
    }
    .faq-arrow{
      flex:0 0 32px;
      width:32px;
      height:32px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(255,138,61,.12);
      color:#8d461d;
      transition:transform .22s var(--ease), background .22s var(--ease);
    }
    .faq-item.is-open .faq-arrow{
      transform:rotate(45deg);
      background:var(--color-orange);
      color:#1d120c;
    }
    .faq-answer{
      display:none;
      padding:0 22px 22px;
      color:var(--color-muted);
      font-size:15px;
      line-height:1.85;
      border-left:4px solid var(--color-orange);
      margin-left:22px;
      margin-bottom:22px;
    }
    .faq-item.is-open .faq-answer{display:block}
    .faq-answer p{margin:0}

    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      background:
        linear-gradient(135deg, rgba(22,22,22,.94), rgba(42,42,42,.90)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:#fff;
      padding:52px;
      display:grid;
      grid-template-columns:minmax(0,1fr) auto;
      align-items:center;
      gap:28px;
      box-shadow:var(--shadow-soft);
    }
    .cta-panel::after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-90px;
      top:-120px;
      border-radius:50%;
      background:rgba(255,138,61,.25);
      filter:blur(8px);
    }
    .cta-panel > *{position:relative;z-index:1}
    .cta-panel h2{
      margin:0 0 12px;
      font-size:clamp(28px,3vw,40px);
      line-height:1.18;
      letter-spacing:-.03em;
    }
    .cta-panel p{
      margin:0;
      color:rgba(255,255,255,.72);
      max-width:720px;
      font-size:16px;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }

    .footer{
      background:var(--color-black);
      color:rgba(255,255,255,.72);
      padding:64px 0 28px;
      border-top:1px solid rgba(255,255,255,.10);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:38px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer .brand{
      margin-bottom:16px;
    }
    .footer-summary{
      margin:0;
      max-width:470px;
      color:rgba(255,255,255,.62);
      font-size:15px;
      line-height:1.8;
    }
    .footer h3{
      margin:0 0 14px;
      color:#fff;
      font-size:16px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.62);
      font-size:14px;
    }
    .footer-links a:hover{
      color:var(--color-orange);
      transform:translateX(2px);
    }
    .footer-note{
      margin:0;
      color:rgba(255,255,255,.58);
      font-size:14px;
      line-height:1.8;
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
      padding-top:22px;
      color:rgba(255,255,255,.48);
      font-size:13px;
    }

    @media (max-width:1024px){
      .hero-inner,
      .scenario-layout,
      .feature-wrap,
      .updates-layout,
      .faq-wrap,
      .proof-grid{
        grid-template-columns:1fr;
      }
      .hero{
        min-height:auto;
      }
      .hero-inner{
        padding:78px 0 78px;
      }
      .cinema-board{
        max-width:720px;
      }
      .updates-panel,
      .faq-intro{
        position:relative;
        top:auto;
      }
      .strip-card{
        grid-template-columns:repeat(2,1fr);
      }
      .strip-item:nth-child(2){
        border-right:0;
      }
      .strip-item:nth-child(-n+2){
        border-bottom:1px solid var(--color-border);
      }
      .steps{
        grid-template-columns:repeat(2,1fr);
      }
      .cta-panel{
        grid-template-columns:1fr;
      }
      .cta-actions{
        justify-content:flex-start;
      }
    }

    @media (max-width:860px){
      .nav-menu{
        position:fixed;
        left:20px;
        right:20px;
        top:calc(var(--nav-h) + 12px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
        padding:16px;
        border-radius:24px;
        background:rgba(22,22,22,.98);
        border:1px solid rgba(255,255,255,.12);
        box-shadow:0 24px 60px rgba(0,0,0,.32);
      }
      .menu-open .nav-menu{display:flex}
      .nav-link{
        padding:13px 15px;
      }
      .nav-link.active::after{display:none}
      .nav-actions .btn{
        display:none;
      }
      .menu-toggle{
        display:flex;
      }
      .brand-name{
        font-size:16px;
      }
      .brand-sub{
        display:none;
      }
    }

    @media (max-width:768px){
      .container{
        width:min(100% - 32px, var(--container));
      }
      .section{
        padding:62px 0;
      }
      .section-tight{
        padding:54px 0;
      }
      .section-head{
        display:block;
      }
      .section-desc{
        margin-top:12px;
      }
      .hero-inner{
        gap:36px;
        padding:58px 0 66px;
      }
      .hero-lead{
        font-size:16px;
      }
      .hero-actions .btn{
        width:100%;
      }
      .hero-notes{
        grid-template-columns:1fr;
      }
      .player-window,
      .player-window img{
        min-height:300px;
        height:300px;
      }
      .strip-card,
      .scene-grid,
      .content-grid,
      .steps,
      .footer-grid{
        grid-template-columns:1fr;
      }
      .strip-item{
        border-right:0;
        border-bottom:1px solid var(--color-border);
      }
      .strip-item:last-child{border-bottom:0}
      .large-card{
        min-height:420px;
        padding:26px;
      }
      .feature-shot,
      .feature-shot img{
        min-height:330px;
        height:330px;
      }
      .step-card::after{
        left:42px;
        top:74px;
        width:2px;
        height:calc(100% - 86px);
        background:linear-gradient(180deg, rgba(255,138,61,.55), transparent);
      }
      .faq-toggle{
        font-size:16px;
        padding:18px;
      }
      .faq-answer{
        margin-left:18px;
        padding:0 18px 18px;
      }
      .cta-panel{
        padding:34px 24px;
        border-radius:28px;
      }
      .cta-actions .btn{
        width:100%;
      }
      .copyright{
        display:block;
      }
      .copyright span{
        display:block;
        margin-top:8px;
      }
    }

    @media (max-width:520px){
      :root{--nav-h:68px}
      .brand-mark{
        width:38px;
        height:38px;
        border-radius:13px;
      }
      .brand-name{
        max-width:210px;
        overflow:hidden;
        text-overflow:ellipsis;
      }
      .hero-badge{
        font-size:13px;
      }
      h1{
        font-size:32px;
      }
      .mini-panels{
        grid-template-columns:1fr;
      }
      .play-button{
        width:64px;
        height:64px;
      }
      .updates-panel,
      .scene-card,
      .post-card,
      .proof-card{
        padding:22px;
      }
      .search-box{
        flex-direction:column;
      }
      .search-btn{
        width:100%;
        height:42px;
      }
    }

/* roulang page: article */
:root{
      --color-black:#161616;
      --color-graphite:#202020;
      --color-soft-black:#2a2a2a;
      --color-orange:#ff8a3d;
      --color-orange-dark:#ea7330;
      --color-gold:#f6a623;
      --color-green:#6cc4a1;
      --color-green-soft:#ddefe8;
      --color-bg:#f7f4ef;
      --color-bg-light:#fafaf8;
      --color-card:#ffffff;
      --color-text:#333333;
      --color-muted:#6f6f6f;
      --color-light:#999999;
      --color-border:#e8e2d8;
      --shadow-soft:0 16px 48px rgba(32,32,32,.08);
      --shadow-card:0 10px 28px rgba(32,32,32,.07);
      --shadow-hover:0 18px 42px rgba(32,32,32,.14);
      --radius-sm:12px;
      --radius-md:18px;
      --radius-lg:26px;
      --radius-xl:34px;
      --container:1200px;
      --nav-h:76px;
      --ease:cubic-bezier(.22,.61,.36,1);
    }
    *{box-sizing:border-box}
    html{
      scroll-behavior:smooth;
      scroll-padding-top:96px;
    }
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--color-text);
      background:
        radial-gradient(circle at 12% 10%, rgba(255,138,61,.10), transparent 28%),
        radial-gradient(circle at 90% 36%, rgba(108,196,161,.12), transparent 26%),
        var(--color-bg);
      line-height:1.75;
      overflow-x:hidden;
    }
    body.menu-open{overflow:hidden}
    a{
      color:inherit;
      text-decoration:none;
      transition:color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
    }
    img{
      max-width:100%;
      display:block;
      height:auto;
    }
    button,input{
      font:inherit;
    }
    button{
      border:0;
      cursor:pointer;
      background:none;
    }
    .container{
      width:min(100% - 48px, var(--container));
      margin-inline:auto;
    }
    .section{
      padding:84px 0;
      position:relative;
    }
    .section-tight{padding:58px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,138,61,.12);
      color:#8d461d;
      font-size:14px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-orange);
      box-shadow:0 0 0 5px rgba(255,138,61,.14);
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-title{
      margin:12px 0 0;
      color:var(--color-black);
      font-size:clamp(28px,3vw,38px);
      line-height:1.2;
      letter-spacing:-.02em;
      font-weight:800;
    }
    .section-desc{
      max-width:640px;
      margin:0;
      color:var(--color-muted);
      font-size:16px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:46px;
      padding:13px 22px;
      border-radius:999px;
      font-weight:800;
      font-size:15px;
      white-space:nowrap;
      border:1px solid transparent;
      user-select:none;
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
    }
    .btn:focus-visible,
    .nav-link:focus-visible,
    .footer a:focus-visible,
    .faq-toggle:focus-visible,
    .card-link:focus-visible,
    .mobile-toggle:focus-visible,
    .toc-link:focus-visible{
      outline:3px solid rgba(255,138,61,.38);
      outline-offset:3px;
    }
    .btn:hover{
      transform:translateY(-2px);
      box-shadow:0 12px 24px rgba(255,138,61,.20);
    }
    .btn:active{
      transform:translateY(0) scale(.98);
      box-shadow:none;
    }
    .btn-primary{
      background:var(--color-orange);
      color:#1d120c;
      box-shadow:0 12px 28px rgba(255,138,61,.22);
    }
    .btn-primary:hover{
      background:var(--color-orange-dark);
      color:#fff;
    }
    .btn-secondary{
      background:rgba(255,255,255,.08);
      color:#fff;
      border-color:rgba(255,255,255,.22);
    }
    .btn-secondary:hover{
      border-color:rgba(255,138,61,.8);
      color:var(--color-orange);
      background:rgba(255,138,61,.08);
    }
    .btn-light{
      background:#fff;
      color:var(--color-black);
      border-color:var(--color-border);
    }
    .btn-light:hover{
      color:#8d461d;
      border-color:rgba(255,138,61,.55);
      box-shadow:var(--shadow-card);
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(22,22,22,.94);
      backdrop-filter:saturate(130%) blur(16px);
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .nav{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#1d120c;
      background:linear-gradient(135deg,var(--color-orange),var(--color-gold));
      box-shadow:0 10px 22px rgba(255,138,61,.25);
      font-weight:900;
    }
    .brand-name{
      color:#fff;
      font-weight:900;
      letter-spacing:-.03em;
      font-size:18px;
      line-height:1.15;
      white-space:nowrap;
    }
    .brand-sub{
      display:block;
      color:rgba(255,255,255,.52);
      font-size:12px;
      font-weight:500;
      margin-top:2px;
      letter-spacing:0;
    }
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
      margin-left:auto;
    }
    .nav-link{
      position:relative;
      padding:10px 14px;
      border-radius:999px;
      color:rgba(255,255,255,.78);
      font-size:14px;
      font-weight:700;
    }
    .nav-link:hover{
      color:var(--color-orange);
      background:rgba(255,255,255,.06);
    }
    .nav-link.active{
      color:#fff;
      background:rgba(255,138,61,.15);
    }
    .nav-link.active::after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:5px;
      height:2px;
      border-radius:99px;
      background:var(--color-orange);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .mobile-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      color:#fff;
      align-items:center;
      justify-content:center;
      transition:background .22s var(--ease), transform .22s var(--ease);
    }
    .mobile-toggle:hover{
      background:rgba(255,138,61,.16);
      transform:translateY(-1px);
    }
    .mobile-toggle span,
    .mobile-toggle span::before,
    .mobile-toggle span::after{
      display:block;
      width:20px;
      height:2px;
      border-radius:99px;
      background:#fff;
      position:relative;
      transition:transform .22s var(--ease), top .22s var(--ease), opacity .22s var(--ease);
    }
    .mobile-toggle span::before,
    .mobile-toggle span::after{
      content:"";
      position:absolute;
      left:0;
    }
    .mobile-toggle span::before{top:-7px}
    .mobile-toggle span::after{top:7px}
    body.menu-open .mobile-toggle span{background:transparent}
    body.menu-open .mobile-toggle span::before{top:0;transform:rotate(45deg)}
    body.menu-open .mobile-toggle span::after{top:0;transform:rotate(-45deg)}

    .article-hero{
      position:relative;
      padding:54px 0 46px;
      overflow:hidden;
      background:
        linear-gradient(120deg, rgba(22,22,22,.94), rgba(32,32,32,.82)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:#fff;
    }
    .article-hero::after{
      content:"";
      position:absolute;
      inset:auto -8% -42% auto;
      width:420px;
      height:420px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,138,61,.22), transparent 64%);
      pointer-events:none;
    }
    .breadcrumb-wrap{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      margin-bottom:28px;
      position:relative;
      z-index:1;
    }
    .breadcrumb{
      margin:0;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      color:rgba(255,255,255,.68);
      font-size:14px;
    }
    .breadcrumb a{
      color:rgba(255,255,255,.82);
      font-weight:700;
    }
    .breadcrumb a:hover{color:var(--color-orange)}
    .breadcrumb-sep{color:rgba(255,255,255,.36)}
    .breadcrumb-current{
      max-width:520px;
      overflow:hidden;
      white-space:nowrap;
      text-overflow:ellipsis;
    }
    .article-hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1fr) 360px;
      gap:38px;
      align-items:end;
      position:relative;
      z-index:1;
    }
    .article-labels{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:800;
      line-height:1;
      border:1px solid transparent;
    }
    .badge-orange{
      color:#321608;
      background:linear-gradient(135deg,var(--color-orange),var(--color-gold));
    }
    .badge-green{
      color:#214736;
      background:var(--color-green-soft);
      border-color:rgba(108,196,161,.36);
    }
    .badge-dark{
      color:#fff;
      background:rgba(255,255,255,.10);
      border-color:rgba(255,255,255,.16);
    }
    .article-title{
      max-width:860px;
      margin:0;
      font-size:clamp(31px,5vw,54px);
      line-height:1.16;
      letter-spacing:-.035em;
      font-weight:900;
      color:#fff;
    }
    .article-summary{
      max-width:780px;
      margin:20px 0 0;
      color:rgba(255,255,255,.76);
      font-size:17px;
      line-height:1.85;
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
      color:rgba(255,255,255,.72);
      font-size:14px;
    }
    .meta-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
    }
    .meta-dot{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-orange);
      box-shadow:0 0 0 4px rgba(255,138,61,.14);
    }
    .hero-cover{
      border-radius:var(--radius-lg);
      overflow:hidden;
      border:1px solid rgba(255,255,255,.14);
      box-shadow:0 24px 60px rgba(0,0,0,.28);
      background:rgba(255,255,255,.08);
      transform:translateY(12px);
    }
    .hero-cover img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      filter:saturate(.95) contrast(1.02);
    }
    .cover-caption{
      padding:14px 16px;
      color:rgba(255,255,255,.72);
      font-size:13px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .cover-caption strong{
      color:#fff;
      font-size:14px;
    }

    .main-area{
      padding:66px 0 86px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) minmax(260px,320px);
      gap:38px;
      align-items:start;
    }
    .article-panel{
      background:rgba(255,255,255,.78);
      border:1px solid var(--color-border);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .reader-note{
      display:flex;
      align-items:flex-start;
      gap:14px;
      padding:18px 22px;
      background:linear-gradient(90deg, rgba(255,138,61,.12), rgba(108,196,161,.10));
      border-bottom:1px solid var(--color-border);
      color:#5a4a3c;
      font-size:14px;
    }
    .reader-note-icon{
      flex:0 0 auto;
      width:34px;
      height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:#fff;
      box-shadow:0 8px 16px rgba(32,32,32,.08);
      color:#8d461d;
      font-weight:900;
    }
    .article-body{
      padding:38px 44px 46px;
      color:#343434;
      font-size:17px;
      line-height:1.88;
      overflow-wrap:anywhere;
    }
    .article-body > *:first-child{margin-top:0}
    .article-body > *:last-child{margin-bottom:0}
    .article-body h2{
      margin:38px 0 16px;
      color:var(--color-black);
      font-size:clamp(24px,3vw,32px);
      line-height:1.28;
      font-weight:900;
      letter-spacing:-.02em;
      padding-top:4px;
    }
    .article-body h3{
      margin:30px 0 12px;
      color:#242424;
      font-size:22px;
      line-height:1.35;
      font-weight:850;
    }
    .article-body h4{
      margin:24px 0 10px;
      color:#2c2c2c;
      font-size:19px;
      font-weight:800;
    }
    .article-body p{
      margin:0 0 19px;
    }
    .article-body a{
      color:#8d461d;
      font-weight:800;
      border-bottom:1px solid rgba(255,138,61,.42);
    }
    .article-body a:hover{
      color:var(--color-orange-dark);
      border-bottom-color:var(--color-orange-dark);
    }
    .article-body ul,
    .article-body ol{
      margin:18px 0 22px;
      padding-left:0;
      list-style:none;
    }
    .article-body li{
      position:relative;
      margin:10px 0;
      padding-left:30px;
    }
    .article-body ul li::before{
      content:"";
      position:absolute;
      left:8px;
      top:.78em;
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-orange);
      box-shadow:0 0 0 5px rgba(255,138,61,.12);
    }
    .article-body ol{
      counter-reset:item;
    }
    .article-body ol li{
      counter-increment:item;
    }
    .article-body ol li::before{
      content:counter(item);
      position:absolute;
      left:0;
      top:.28em;
      width:22px;
      height:22px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:var(--color-orange);
      color:#1d120c;
      font-size:12px;
      font-weight:900;
    }
    .article-body blockquote{
      margin:26px 0;
      padding:20px 22px;
      border-left:5px solid var(--color-orange);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      background:#fff7ef;
      color:#4f4033;
      box-shadow:inset 0 0 0 1px rgba(255,138,61,.12);
    }
    .article-body blockquote p:last-child{margin-bottom:0}
    .article-body img{
      margin:28px auto;
      border-radius:18px;
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-card);
    }
    .article-body hr{
      border:0;
      height:1px;
      background:linear-gradient(90deg, transparent, var(--color-border), transparent);
      margin:36px 0;
    }
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:26px 0;
      border:1px solid var(--color-border);
      border-radius:18px;
      overflow:hidden;
      background:#fff;
      box-shadow:var(--shadow-card);
      display:block;
      overflow-x:auto;
    }
    .article-body th,
    .article-body td{
      min-width:140px;
      padding:14px 16px;
      border-bottom:1px solid var(--color-border);
      text-align:left;
      white-space:nowrap;
    }
    .article-body th{
      background:#fbf2e9;
      color:#432416;
      font-weight:900;
    }
    .article-body tr:last-child td{border-bottom:0}

    .not-found{
      padding:48px 44px;
      text-align:center;
    }
    .not-found-icon{
      width:72px;
      height:72px;
      margin:0 auto 18px;
      border-radius:24px;
      display:grid;
      place-items:center;
      background:rgba(255,138,61,.12);
      color:#8d461d;
      font-size:34px;
      font-weight:900;
    }
    .not-found h2{
      margin:0 0 10px;
      color:var(--color-black);
      font-size:28px;
      font-weight:900;
    }
    .not-found p{
      margin:0 auto 22px;
      max-width:520px;
      color:var(--color-muted);
    }

    .sidebar{
      position:sticky;
      top:calc(var(--nav-h) + 22px);
      display:grid;
      gap:18px;
    }
    .side-card{
      background:rgba(255,255,255,.82);
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-card);
      padding:22px;
    }
    .side-card.dark{
      background:linear-gradient(145deg,#191919,#292929);
      color:#fff;
      border-color:rgba(255,255,255,.10);
      overflow:hidden;
      position:relative;
    }
    .side-card.dark::after{
      content:"";
      position:absolute;
      right:-44px;
      bottom:-54px;
      width:150px;
      height:150px;
      border-radius:50%;
      background:rgba(255,138,61,.16);
    }
    .side-title{
      margin:0 0 14px;
      color:var(--color-black);
      font-size:18px;
      font-weight:900;
    }
    .side-card.dark .side-title{color:#fff}
    .toc-list{
      display:grid;
      gap:8px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .toc-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      padding:10px 12px;
      border-radius:14px;
      color:#555;
      background:#fbfaf7;
      border:1px solid transparent;
      font-weight:700;
      font-size:14px;
    }
    .toc-link:hover{
      color:#8d461d;
      border-color:rgba(255,138,61,.38);
      transform:translateX(3px);
    }
    .toc-link span:last-child{
      color:var(--color-orange);
    }
    .info-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .info-list li{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-bottom:12px;
      border-bottom:1px dashed var(--color-border);
      color:var(--color-muted);
      font-size:14px;
    }
    .info-list li:last-child{
      border-bottom:0;
      padding-bottom:0;
    }
    .info-list strong{
      color:var(--color-black);
      font-weight:900;
      text-align:right;
    }
    .side-card.dark p{
      position:relative;
      z-index:1;
      color:rgba(255,255,255,.72);
      margin:0 0 18px;
      font-size:14px;
    }
    .side-card.dark .btn{
      position:relative;
      z-index:1;
      width:100%;
    }
    .mini-cover{
      margin-top:16px;
      border-radius:18px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.12);
      position:relative;
      z-index:1;
    }
    .mini-cover img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }

    .related{
      margin-top:36px;
      background:rgba(255,255,255,.60);
      border:1px solid var(--color-border);
      border-radius:var(--radius-xl);
      padding:28px;
      box-shadow:var(--shadow-card);
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
      margin-top:18px;
    }
    .related-card{
      display:flex;
      flex-direction:column;
      gap:12px;
      min-height:100%;
      padding:18px;
      border-radius:20px;
      background:#fff;
      border:1px solid var(--color-border);
      box-shadow:0 8px 20px rgba(32,32,32,.04);
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
    }
    .related-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(255,138,61,.58);
    }
    .related-card h3{
      margin:0;
      color:var(--color-black);
      font-size:18px;
      line-height:1.38;
      font-weight:900;
    }
    .related-card:hover h3{color:#8d461d}
    .related-card p{
      margin:0;
      color:var(--color-muted);
      font-size:14px;
      line-height:1.7;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .card-link{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#8d461d;
      font-weight:900;
      font-size:14px;
    }
    .card-link:hover{
      color:var(--color-orange-dark);
      transform:translateX(3px);
    }

    .faq-section{
      padding:74px 0 88px;
      background:linear-gradient(180deg, rgba(250,250,248,.72), rgba(247,244,239,.92));
      border-top:1px solid rgba(232,226,216,.72);
    }
    .faq-grid{
      display:grid;
      grid-template-columns:minmax(0,420px) minmax(0,1fr);
      gap:34px;
      align-items:start;
    }
    .faq-intro{
      background:var(--color-black);
      color:#fff;
      border-radius:var(--radius-xl);
      padding:30px;
      box-shadow:var(--shadow-soft);
      position:relative;
      overflow:hidden;
    }
    .faq-intro::after{
      content:"";
      position:absolute;
      right:-70px;
      bottom:-80px;
      width:230px;
      height:230px;
      border-radius:50%;
      background:rgba(255,138,61,.16);
    }
    .faq-intro h2{
      margin:12px 0 12px;
      font-size:clamp(26px,3vw,36px);
      line-height:1.22;
      font-weight:900;
    }
    .faq-intro p{
      margin:0;
      color:rgba(255,255,255,.70);
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border:1px solid var(--color-border);
      border-radius:20px;
      background:#fff;
      box-shadow:0 8px 18px rgba(32,32,32,.04);
      overflow:hidden;
      transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
    }
    .faq-item.open{
      border-color:rgba(255,138,61,.50);
      box-shadow:var(--shadow-card);
    }
    .faq-toggle{
      width:100%;
      min-height:58px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 20px;
      color:var(--color-black);
      text-align:left;
      font-weight:900;
      background:#fff;
      border-left:4px solid transparent;
    }
    .faq-item.open .faq-toggle{
      border-left-color:var(--color-orange);
      background:#fffaf5;
    }
    .faq-arrow{
      flex:0 0 auto;
      width:30px;
      height:30px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(255,138,61,.12);
      color:#8d461d;
      transition:transform .22s var(--ease);
    }
    .faq-item.open .faq-arrow{transform:rotate(45deg)}
    .faq-answer{
      display:none;
      padding:0 22px 20px 24px;
      color:var(--color-muted);
      font-size:15px;
      line-height:1.8;
    }
    .faq-item.open .faq-answer{display:block}

    .cta-panel{
      margin-top:34px;
      border-radius:var(--radius-xl);
      padding:34px;
      background:
        linear-gradient(135deg, rgba(22,22,22,.96), rgba(42,42,42,.92)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color:#fff;
      overflow:hidden;
      position:relative;
      box-shadow:var(--shadow-soft);
    }
    .cta-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(circle at 82% 20%, rgba(255,138,61,.20), transparent 36%);
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .cta-panel h2{
      margin:0 0 8px;
      font-size:clamp(24px,3vw,34px);
      font-weight:900;
      line-height:1.24;
    }
    .cta-panel p{
      margin:0;
      max-width:620px;
      color:rgba(255,255,255,.72);
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }

    .footer{
      background:var(--color-black);
      color:rgba(255,255,255,.70);
      padding:58px 0 28px;
      border-top:1px solid rgba(255,255,255,.10);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr .8fr 1fr;
      gap:34px;
      align-items:start;
    }
    .footer .brand{
      display:inline-flex;
      margin-bottom:18px;
    }
    .footer-summary{
      max-width:460px;
      margin:0;
      color:rgba(255,255,255,.62);
      line-height:1.8;
    }
    .footer h3{
      margin:0 0 16px;
      color:#fff;
      font-size:17px;
      font-weight:900;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer a{
      color:rgba(255,255,255,.68);
      font-weight:700;
    }
    .footer a:hover{
      color:var(--color-orange);
      transform:translateX(3px);
    }
    .footer-note{
      margin:0;
      color:rgba(255,255,255,.62);
      line-height:1.8;
    }
    .copyright{
      margin-top:36px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.10);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.48);
      font-size:13px;
    }

    @media (max-width:1024px){
      .container{width:min(100% - 40px, var(--container))}
      .article-hero-grid{
        grid-template-columns:1fr;
      }
      .hero-cover{
        max-width:520px;
        transform:none;
      }
      .article-layout{
        grid-template-columns:1fr;
      }
      .sidebar{
        position:static;
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
      .side-card.dark{
        grid-column:1/-1;
      }
      .faq-grid{
        grid-template-columns:1fr;
      }
      .related-grid{
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
      .footer-grid > div:first-child{
        grid-column:1/-1;
      }
    }
    @media (max-width:768px){
      :root{--nav-h:68px}
      .container{width:min(100% - 32px, var(--container))}
      .nav-actions .btn{display:none}
      .mobile-toggle{display:inline-flex}
      .nav-menu{
        position:fixed;
        left:16px;
        right:16px;
        top:calc(var(--nav-h) + 12px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:14px;
        border-radius:24px;
        background:rgba(22,22,22,.98);
        border:1px solid rgba(255,255,255,.12);
        box-shadow:0 24px 60px rgba(0,0,0,.32);
      }
      body.menu-open .nav-menu{display:flex}
      .nav-link{
        padding:14px 16px;
        font-size:15px;
      }
      .nav-link.active::after{
        left:16px;
        right:auto;
        width:34px;
      }
      .brand-name{font-size:16px}
      .brand-sub{font-size:11px}
      .article-hero{
        padding:36px 0 38px;
      }
      .breadcrumb-wrap{
        align-items:flex-start;
        flex-direction:column;
      }
      .breadcrumb-current{
        max-width:100%;
      }
      .article-summary{
        font-size:16px;
      }
      .main-area{
        padding:44px 0 66px;
      }
      .article-body{
        padding:30px 24px 36px;
        font-size:16px;
      }
      .reader-note{
        padding:16px 18px;
      }
      .sidebar{
        grid-template-columns:1fr;
      }
      .related{
        padding:22px;
      }
      .related-grid{
        grid-template-columns:1fr;
      }
      .section-head{
        display:block;
      }
      .section-desc{
        margin-top:12px;
      }
      .faq-section{
        padding:56px 0 68px;
      }
      .cta-inner{
        flex-direction:column;
        align-items:flex-start;
      }
      .cta-actions,
      .cta-actions .btn{
        width:100%;
      }
      .footer-grid{
        grid-template-columns:1fr;
      }
      .copyright{
        display:grid;
      }
    }
    @media (max-width:520px){
      .container{width:min(100% - 28px, var(--container))}
      .brand-mark{
        width:38px;
        height:38px;
        border-radius:13px;
      }
      .brand-name{
        max-width:210px;
        white-space:normal;
      }
      .brand-sub{display:none}
      .article-labels{
        gap:8px;
      }
      .badge{
        font-size:12px;
      }
      .article-meta{
        gap:8px;
      }
      .meta-item{
        width:100%;
        justify-content:flex-start;
      }
      .hero-cover{
        border-radius:20px;
      }
      .article-panel{
        border-radius:24px;
      }
      .article-body{
        padding:26px 18px 32px;
      }
      .article-body h2{
        margin-top:32px;
      }
      .not-found{
        padding:38px 20px;
      }
      .side-card{
        padding:18px;
        border-radius:22px;
      }
      .faq-toggle{
        padding:16px;
      }
      .faq-answer{
        padding:0 18px 18px 20px;
      }
      .cta-panel{
        padding:26px 20px;
      }
    }

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