/* roulang page: index */
:root{
      --bg:#101114;
      --bg-2:#15161a;
      --panel:#1d1e23;
      --panel-2:#24252b;
      --card:#191a1f;
      --card-hover:#222329;
      --text:#f5f1e8;
      --muted:#d7d2c8;
      --weak:#958f86;
      --line:rgba(245,241,232,.13);
      --line-strong:rgba(245,158,11,.38);
      --brand:#f59e0b;
      --brand-2:#f97316;
      --brand-soft:rgba(245,158,11,.14);
      --purple-soft:rgba(124,58,237,.15);
      --brown:#8b5e34;
      --shadow:0 24px 70px rgba(0,0,0,.38);
      --shadow-soft:0 16px 38px rgba(0,0,0,.24);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1200px;
      --ease:all .24s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      background:
        radial-gradient(circle at 8% 8%,rgba(245,158,11,.16),transparent 34%),
        radial-gradient(circle at 86% 20%,rgba(124,58,237,.14),transparent 28%),
        linear-gradient(180deg,var(--bg),#0d0e11 62%,#111216);
      color:var(--text);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.22;
      background-image:
        linear-gradient(rgba(245,241,232,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,241,232,.045) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,black,transparent 78%);
      z-index:-2;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:none;cursor:pointer}
    :focus-visible{
      outline:2px solid rgba(245,158,11,.95);
      outline-offset:4px;
      box-shadow:0 0 0 6px rgba(245,158,11,.13);
    }
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(16,17,20,.88);
      backdrop-filter:blur(16px);
      border-bottom:1px solid var(--line);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:.2px;
      color:var(--text);
    }
    .brand-mark{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:
        linear-gradient(135deg,var(--brand),var(--brand-2)),
        linear-gradient(180deg,rgba(255,255,255,.3),transparent);
      color:#16110a;
      box-shadow:0 10px 24px rgba(245,158,11,.24);
      flex:0 0 auto;
      font-weight:900;
    }
    .brand-text{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:330px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:6px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,255,255,.025);
    }
    .nav-links a{
      position:relative;
      padding:9px 14px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{
      color:var(--brand);
      background:var(--brand-soft);
    }
    .nav-action{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      color:var(--text);
      background:rgba(255,255,255,.06);
      border:1px solid var(--line);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 20px;
      border-radius:999px;
      font-weight:700;
      font-size:15px;
      transition:var(--ease);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .btn-primary{
      color:#19120a;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 14px 30px rgba(245,158,11,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 18px 40px rgba(245,158,11,.3)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.035);
      border-color:var(--line);
    }
    .btn-secondary:hover{
      transform:translateY(-2px);
      color:var(--brand);
      border-color:var(--line-strong);
      background:rgba(245,158,11,.09);
    }
    .btn-arrow{transition:transform .24s ease}
    .btn:hover .btn-arrow{transform:translateX(3px)}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      color:#ffd18a;
      background:var(--brand-soft);
      border:1px solid rgba(245,158,11,.18);
      font-size:13px;
      font-weight:700;
      line-height:1;
    }
    .badge::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 14px rgba(245,158,11,.8);
    }
    .section{padding:88px 0}
    .section-tight{padding:64px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:26px;
      margin-bottom:32px;
    }
    .section-kicker{
      color:var(--brand);
      font-weight:800;
      font-size:14px;
      letter-spacing:.04em;
      margin-bottom:10px;
    }
    .section-title{
      font-size:clamp(28px,4vw,38px);
      line-height:1.25;
      letter-spacing:-.02em;
      max-width:760px;
    }
    .section-desc{
      color:var(--muted);
      max-width:560px;
      font-size:16px;
    }
    .hero{
      position:relative;
      min-height:720px;
      display:flex;
      align-items:center;
      isolation:isolate;
      overflow:hidden;
      border-bottom:1px solid var(--line);
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg,rgba(16,17,20,.34),rgba(16,17,20,.9)),
        linear-gradient(90deg,rgba(16,17,20,.92),rgba(16,17,20,.58),rgba(16,17,20,.9)),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      z-index:-2;
    }
    .hero::after{
      content:"";
      position:absolute;
      width:520px;
      height:520px;
      border-radius:50%;
      right:-160px;
      top:120px;
      background:radial-gradient(circle,rgba(245,158,11,.24),transparent 66%);
      filter:blur(8px);
      z-index:-1;
    }
    .hero-inner{
      padding:94px 0 70px;
      display:grid;
      grid-template-columns:minmax(0,1fr);
      gap:38px;
    }
    .hero-copy{
      max-width:940px;
      margin:0 auto;
      text-align:center;
    }
    .hero h1{
      margin-top:18px;
      font-size:clamp(34px,6vw,64px);
      line-height:1.12;
      letter-spacing:-.045em;
      font-weight:850;
    }
    .hero-sub{
      margin:22px auto 0;
      max-width:820px;
      color:var(--muted);
      font-size:clamp(17px,2vw,20px);
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:14px;
      margin-top:30px;
    }
    .hero-note{
      margin-top:18px;
      color:var(--weak);
      font-size:14px;
    }
    .hero-mosaic{
      display:grid;
      grid-template-columns:1.35fr .8fr .95fr;
      gap:18px;
      align-items:stretch;
      margin-top:8px;
    }
    .mosaic-card{
      position:relative;
      overflow:hidden;
      min-height:180px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:rgba(25,26,31,.72);
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .mosaic-card:hover{transform:translateY(-4px);border-color:rgba(245,158,11,.34);background:rgba(34,35,41,.82)}
    .mosaic-card.large{min-height:250px}
    .mosaic-img{
      position:absolute;
      inset:0;
      width:100%;
      height:100%;
      object-fit:cover;
      opacity:.52;
      filter:saturate(.92) contrast(1.02);
    }
    .mosaic-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(16,17,20,.18),rgba(16,17,20,.9));
    }
    .mosaic-content{
      position:absolute;
      inset:auto 0 0 0;
      z-index:2;
      padding:24px;
    }
    .mosaic-content h2,.mosaic-content h3{
      font-size:22px;
      line-height:1.35;
      margin-top:10px;
    }
    .mosaic-content p{
      margin-top:8px;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }
    .status-strip{
      margin-top:12px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
    }
    .status-item{
      padding:18px 20px;
      border-radius:20px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.035);
      backdrop-filter:blur(12px);
    }
    .status-item strong{
      display:block;
      color:var(--brand);
      font-size:22px;
      line-height:1.2;
    }
    .status-item span{color:var(--muted);font-size:14px}
    .quick-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .quick-card{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:20px;
      border-radius:20px;
      background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
      border:1px solid var(--line);
      transition:var(--ease);
    }
    .quick-card:hover{
      transform:translateY(-3px);
      border-color:var(--line-strong);
      background:rgba(245,158,11,.07);
    }
    .quick-icon{
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:var(--brand);
      background:var(--brand-soft);
      flex:0 0 auto;
    }
    .quick-card h3{font-size:17px;line-height:1.35}
    .quick-card p{margin-top:4px;color:var(--weak);font-size:14px;line-height:1.55}
    .explain-wrap{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:34px;
      align-items:start;
    }
    .intro-panel{
      position:sticky;
      top:104px;
      padding:32px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:
        linear-gradient(135deg,rgba(245,158,11,.11),transparent 48%),
        rgba(25,26,31,.8);
      box-shadow:var(--shadow-soft);
    }
    .intro-panel p{color:var(--muted);margin-top:14px}
    .intro-list{
      margin-top:24px;
      display:grid;
      gap:10px;
    }
    .intro-list li{
      list-style:none;
      display:flex;
      gap:10px;
      color:var(--muted);
      align-items:flex-start;
    }
    .intro-list li::before{
      content:"✓";
      width:22px;
      height:22px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:var(--brand-soft);
      color:var(--brand);
      font-size:12px;
      font-weight:800;
      flex:0 0 auto;
      margin-top:3px;
    }
    .timeline{
      display:grid;
      gap:16px;
    }
    .timeline-card{
      position:relative;
      padding:26px 26px 26px 82px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:var(--card);
      transition:var(--ease);
      overflow:hidden;
    }
    .timeline-card:hover{
      transform:translateY(-3px);
      background:var(--card-hover);
      border-color:var(--line-strong);
    }
    .timeline-num{
      position:absolute;
      left:26px;
      top:26px;
      width:38px;
      height:38px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#19120a;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      font-weight:900;
    }
    .timeline-card h3{font-size:21px;margin-bottom:8px}
    .timeline-card p{color:var(--muted)}
    .updates{
      background:
        linear-gradient(180deg,rgba(245,158,11,.04),transparent),
        var(--bg-2);
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .updates-layout{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:18px;
      align-items:stretch;
    }
    .featured-post,.post-row,.empty-state{
      border:1px solid var(--line);
      background:rgba(25,26,31,.92);
      border-radius:var(--radius-xl);
      transition:var(--ease);
    }
    .featured-post{
      min-height:430px;
      display:flex;
      flex-direction:column;
      overflow:hidden;
    }
    .featured-post:hover,.post-row:hover{
      transform:translateY(-3px);
      border-color:var(--line-strong);
      background:rgba(34,35,41,.96);
    }
    .featured-cover{
      position:relative;
      min-height:210px;
      overflow:hidden;
    }
    .featured-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      min-height:210px;
      opacity:.86;
      transition:transform .35s ease;
    }
    .featured-post:hover .featured-cover img{transform:scale(1.035)}
    .featured-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent,rgba(16,17,20,.7));
    }
    .featured-body{
      padding:26px;
      display:flex;
      flex-direction:column;
      flex:1;
    }
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:10px;
      color:var(--weak);
      font-size:13px;
      margin-bottom:13px;
    }
    .post-cat{
      color:#ffd18a;
      background:var(--brand-soft);
      padding:4px 9px;
      border-radius:999px;
      border:1px solid rgba(245,158,11,.18);
    }
    .featured-body h3{
      font-size:27px;
      line-height:1.35;
      transition:var(--ease);
    }
    .featured-post:hover h3,.post-row:hover h3{color:var(--brand)}
    .featured-body p{
      margin-top:12px;
      color:var(--muted);
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .read-link{
      margin-top:auto;
      padding-top:22px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-weight:800;
    }
    .read-link span{transition:var(--ease)}
    .featured-post:hover .read-link span,.post-row:hover .read-link span{transform:translateX(4px)}
    .post-list{
      display:grid;
      gap:14px;
    }
    .post-row{
      display:grid;
      grid-template-columns:118px 1fr;
      gap:16px;
      padding:14px;
      border-radius:22px;
      min-height:138px;
    }
    .post-thumb{
      border-radius:16px;
      overflow:hidden;
      min-height:110px;
      background:var(--panel);
    }
    .post-thumb img{width:100%;height:100%;object-fit:cover;opacity:.86}
    .post-row h3{
      font-size:18px;
      line-height:1.42;
      transition:var(--ease);
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .post-row p{
      margin-top:6px;
      color:var(--weak);
      font-size:14px;
      line-height:1.58;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .empty-state{
      grid-column:1/-1;
      padding:52px 24px;
      text-align:center;
    }
    .empty-icon{
      width:68px;
      height:68px;
      margin:0 auto 18px;
      border-radius:24px;
      display:grid;
      place-items:center;
      color:var(--brand);
      background:var(--brand-soft);
      border:1px solid rgba(245,158,11,.18);
      font-size:28px;
    }
    .empty-state p{color:var(--muted);margin-bottom:18px}
    .guide{
      background:#f5f1e8;
      color:#171717;
    }
    .guide .section-kicker{color:#a65f00}
    .guide .section-desc{color:#5d574f}
    .step-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      counter-reset:step;
    }
    .step-card{
      position:relative;
      padding:30px 24px;
      border-radius:24px;
      background:#fffaf0;
      border:1px solid rgba(139,94,52,.16);
      box-shadow:0 18px 45px rgba(139,94,52,.08);
      transition:var(--ease);
      overflow:hidden;
    }
    .step-card:hover{transform:translateY(-4px);box-shadow:0 24px 60px rgba(139,94,52,.14)}
    .step-card::before{
      counter-increment:step;
      content:"0" counter(step);
      display:grid;
      place-items:center;
      width:46px;
      height:46px;
      border-radius:18px;
      color:#20150b;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      font-weight:900;
      margin-bottom:20px;
    }
    .step-card h3{font-size:20px;margin-bottom:8px}
    .step-card p{color:#645d54;line-height:1.72}
    .feature-wrap{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:28px;
      align-items:center;
    }
    .feature-media{
      position:relative;
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid var(--line);
      min-height:470px;
      box-shadow:var(--shadow);
    }
    .feature-media img{
      width:100%;
      height:100%;
      min-height:470px;
      object-fit:cover;
      opacity:.82;
    }
    .feature-media::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(16,17,20,.12),rgba(16,17,20,.86));
    }
    .media-caption{
      position:absolute;
      left:28px;
      right:28px;
      bottom:28px;
      z-index:2;
    }
    .media-caption h3{font-size:28px;line-height:1.3}
    .media-caption p{margin-top:10px;color:var(--muted)}
    .feature-list{
      display:grid;
      gap:14px;
    }
    .feature-item{
      display:flex;
      gap:16px;
      padding:22px;
      border-radius:22px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.035);
      transition:var(--ease);
    }
    .feature-item:hover{transform:translateX(4px);border-color:var(--line-strong);background:rgba(245,158,11,.07)}
    .feature-icon{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      color:var(--brand);
      background:var(--brand-soft);
      flex:0 0 auto;
      font-size:19px;
    }
    .feature-item h3{font-size:19px;margin-bottom:5px}
    .feature-item p{color:var(--muted);font-size:15px}
    .trust-grid{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:22px;
    }
    .notice-card{
      padding:30px;
      border-radius:var(--radius-xl);
      background:
        linear-gradient(135deg,rgba(124,58,237,.16),transparent 50%),
        rgba(25,26,31,.78);
      border:1px solid var(--line);
    }
    .notice-card h3{font-size:24px;margin-bottom:12px}
    .notice-card p{color:var(--muted)}
    .notice-pills{
      margin-top:20px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .pill{
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
      color:var(--muted);
      font-size:13px;
    }
    .mini-notes{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .mini-note{
      padding:22px;
      border-radius:22px;
      background:var(--card);
      border:1px solid var(--line);
      transition:var(--ease);
    }
    .mini-note:hover{transform:translateY(-3px);border-color:var(--line-strong)}
    .mini-note strong{display:block;color:var(--brand);font-size:26px;line-height:1.1;margin-bottom:8px}
    .mini-note span{color:var(--muted)}
    .faq-wrap{
      display:grid;
      grid-template-columns:.72fr 1.28fr;
      gap:32px;
      align-items:start;
    }
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:20px;
      background:rgba(25,26,31,.78);
      overflow:hidden;
      transition:var(--ease);
    }
    .faq-item:hover{background:rgba(34,35,41,.9);border-color:rgba(245,158,11,.22)}
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:20px 22px;
      color:var(--text);
      background:transparent;
      text-align:left;
      font-weight:800;
    }
    .faq-question .plus{
      width:30px;
      height:30px;
      border-radius:50%;
      display:grid;
      place-items:center;
      color:var(--brand);
      background:var(--brand-soft);
      transition:var(--ease);
      flex:0 0 auto;
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
    }
    .faq-answer p{
      padding:0 22px 20px;
      color:var(--muted);
      line-height:1.78;
    }
    .faq-item.open{
      border-color:rgba(245,158,11,.32);
      background:rgba(245,158,11,.055);
    }
    .faq-item.open .plus{transform:rotate(45deg)}
    .faq-item.open .faq-answer{max-height:220px}
    .contact-cta{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      border:1px solid var(--line-strong);
      background:
        linear-gradient(110deg,rgba(16,17,20,.92),rgba(29,30,35,.74)),
        url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .contact-cta::before{
      content:"";
      position:absolute;
      width:420px;
      height:420px;
      right:-120px;
      bottom:-180px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(245,158,11,.32),transparent 68%);
    }
    .cta-inner{
      position:relative;
      z-index:2;
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
      padding:44px;
    }
    .cta-inner h2{
      font-size:clamp(26px,4vw,40px);
      line-height:1.25;
      max-width:760px;
    }
    .cta-inner p{
      margin-top:12px;
      color:var(--muted);
      max-width:720px;
    }
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .feedback{
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:24px;
      align-items:start;
    }
    .feedback-card,.feedback-form{
      border:1px solid var(--line);
      background:rgba(25,26,31,.82);
      border-radius:var(--radius-xl);
      padding:30px;
    }
    .feedback-card h2{font-size:30px;line-height:1.3;margin-bottom:12px}
    .feedback-card p{color:var(--muted)}
    .feedback-meta{
      margin-top:24px;
      display:grid;
      gap:12px;
    }
    .feedback-meta div{
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,255,255,.035);
      border:1px solid var(--line);
      color:var(--muted);
    }
    .form-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    .field label{
      color:var(--muted);
      font-size:14px;
      font-weight:700;
    }
    .field input,.field textarea{
      width:100%;
      border:1px solid var(--line);
      background:#121318;
      color:var(--text);
      border-radius:16px;
      padding:13px 15px;
      min-height:50px;
      transition:var(--ease);
    }
    .field textarea{min-height:128px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#746f69}
    .field input:focus,.field textarea:focus{
      border-color:var(--brand);
      box-shadow:0 0 0 5px rgba(245,158,11,.12);
      outline:none;
    }
    .form-tip{
      color:var(--weak);
      font-size:13px;
      margin-top:12px;
    }
    .site-footer{
      border-top:1px solid var(--line);
      background:#0b0c0f;
      padding:48px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr .8fr;
      gap:34px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:850;
      margin-bottom:12px;
    }
    .footer-about p{color:var(--weak);max-width:520px}
    .footer-title{
      color:var(--text);
      font-weight:800;
      margin-bottom:12px;
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a,.footer-copy a{
      color:var(--weak);
      transition:var(--ease);
    }
    .footer-links a:hover,.footer-copy a:hover{color:var(--brand)}
    .footer-copy{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid var(--line);
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:#77716a;
      font-size:13px;
    }
    @media (max-width:1024px){
      .nav-links{
        position:fixed;
        left:20px;
        right:20px;
        top:86px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:22px;
        padding:12px;
        background:rgba(16,17,20,.96);
        box-shadow:var(--shadow);
      }
      .nav-links.show{display:flex}
      .nav-links a{padding:13px 14px}
      .menu-toggle{display:grid;place-items:center}
      .nav-action .btn{display:none}
      .hero{min-height:auto}
      .hero-mosaic{grid-template-columns:1fr 1fr}
      .mosaic-card.large{grid-column:1/-1}
      .quick-grid,.step-grid{grid-template-columns:repeat(2,1fr)}
      .explain-wrap,.updates-layout,.feature-wrap,.trust-grid,.faq-wrap,.feedback{grid-template-columns:1fr}
      .intro-panel{position:relative;top:auto}
      .cta-inner{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-about{grid-column:1/-1}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .section{padding:62px 0}
      .section-tight{padding:46px 0}
      .nav-wrap{min-height:68px}
      .brand-text{max-width:230px}
      .hero-inner{padding:64px 0 48px}
      .hero-copy{text-align:left}
      .hero-actions{justify-content:flex-start}
      .hero-mosaic{grid-template-columns:1fr}
      .status-strip{grid-template-columns:1fr}
      .section-head{display:block}
      .section-desc{margin-top:10px}
      .quick-grid,.step-grid,.mini-notes{grid-template-columns:1fr}
      .post-row{grid-template-columns:96px 1fr}
      .featured-body h3{font-size:23px}
      .feature-media,.feature-media img{min-height:360px}
      .cta-inner{padding:30px 24px}
      .form-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-copy{display:grid}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .brand-mark{width:36px;height:36px;border-radius:12px}
      .brand-text{max-width:190px;font-size:14px}
      .hero h1{font-size:32px}
      .hero-sub{font-size:16px}
      .hero-actions .btn,.cta-actions .btn{width:100%}
      .mosaic-content{padding:20px}
      .quick-card,.timeline-card,.feature-item,.feedback-card,.feedback-form{padding:20px}
      .timeline-card{padding-left:68px}
      .timeline-num{left:20px}
      .post-row{grid-template-columns:1fr}
      .post-thumb{display:none}
      .contact-cta{border-radius:24px}
    }

/* roulang page: article */
:root{
      --bg:#101114;
      --bg-2:#15161a;
      --panel:#1d1e23;
      --panel-2:#24252b;
      --card:#191a1f;
      --card-hover:#222329;
      --text:#f5f1e8;
      --muted:#d7d2c8;
      --weak:#958f86;
      --line:rgba(245,241,232,.13);
      --line-strong:rgba(245,158,11,.38);
      --brand:#f59e0b;
      --brand-2:#f97316;
      --brand-soft:rgba(245,158,11,.14);
      --purple-soft:rgba(124,58,237,.15);
      --brown:#8b5e34;
      --shadow:0 24px 70px rgba(0,0,0,.38);
      --shadow-soft:0 16px 38px rgba(0,0,0,.24);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1200px;
      --ease:all .24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      background:
        radial-gradient(circle at 8% 8%,rgba(245,158,11,.16),transparent 34%),
        radial-gradient(circle at 86% 20%,rgba(124,58,237,.14),transparent 28%),
        linear-gradient(180deg,var(--bg),#0d0e11 62%,#111216);
      color:var(--text);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.22;
      background-image:
        linear-gradient(rgba(245,241,232,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,241,232,.045) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,black,transparent 78%);
      z-index:-2;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:none;cursor:pointer}
    ::selection{background:rgba(245,158,11,.32);color:var(--text)}
    :focus-visible{outline:3px solid rgba(245,158,11,.58);outline-offset:3px;border-radius:10px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(16,17,20,.88);
      backdrop-filter:blur(16px);
      border-bottom:1px solid var(--line);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:.2px;
      color:var(--text);
    }
    .brand-mark{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:
        linear-gradient(135deg,var(--brand),var(--brand-2)),
        linear-gradient(180deg,rgba(255,255,255,.3),transparent);
      color:#16110a;
      box-shadow:0 10px 24px rgba(245,158,11,.24);
      flex:0 0 auto;
      font-weight:900;
    }
    .brand-text{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:330px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:6px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,255,255,.025);
    }
    .nav-links a{
      position:relative;
      padding:9px 14px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{
      color:var(--brand);
      background:var(--brand-soft);
    }
    .nav-action{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      color:var(--text);
      background:rgba(255,255,255,.06);
      border:1px solid var(--line);
      align-items:center;
      justify-content:center;
      transition:var(--ease);
    }
    .menu-toggle:hover{border-color:var(--line-strong);color:var(--brand)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 20px;
      border-radius:999px;
      font-weight:700;
      font-size:15px;
      transition:var(--ease);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .btn-primary{
      color:#19120a;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 14px 30px rgba(245,158,11,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 18px 40px rgba(245,158,11,.3)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.035);
      border-color:var(--line);
    }
    .btn-secondary:hover{
      transform:translateY(-2px);
      color:var(--brand);
      border-color:var(--line-strong);
      background:rgba(245,158,11,.09);
    }
    .btn-arrow{transition:transform .24s ease}
    .btn:hover .btn-arrow{transform:translateX(3px)}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      color:#ffd18a;
      background:var(--brand-soft);
      border:1px solid rgba(245,158,11,.18);
      font-size:13px;
      font-weight:700;
      line-height:1;
    }
    .badge::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 14px rgba(245,158,11,.8);
    }
    .section{padding:88px 0}
    .section-tight{padding:64px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:26px;
      margin-bottom:32px;
    }
    .section-kicker{
      color:var(--brand);
      font-weight:800;
      font-size:14px;
      letter-spacing:.04em;
      margin-bottom:10px;
    }
    .section-title{
      font-size:clamp(28px,4vw,38px);
      line-height:1.25;
      letter-spacing:-.02em;
      max-width:760px;
      margin:0;
    }
    .section-desc{
      color:var(--muted);
      max-width:560px;
      font-size:16px;
      margin:0;
    }

    .article-banner{
      position:relative;
      padding:54px 0 46px;
      border-bottom:1px solid var(--line);
      overflow:hidden;
      isolation:isolate;
    }
    .article-banner::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg,rgba(16,17,20,.62),rgba(16,17,20,.96)),
        linear-gradient(90deg,rgba(16,17,20,.94),rgba(16,17,20,.56),rgba(16,17,20,.9)),
        url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
      z-index:-2;
    }
    .article-banner::after{
      content:"";
      position:absolute;
      width:460px;
      height:460px;
      left:58%;
      top:-210px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(245,158,11,.28),transparent 64%);
      filter:blur(10px);
      z-index:-1;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      color:var(--weak);
      font-size:14px;
      margin-bottom:30px;
    }
    .breadcrumb a{
      color:var(--muted);
      transition:var(--ease);
    }
    .breadcrumb a:hover{color:var(--brand)}
    .breadcrumb span:last-child{
      color:rgba(245,241,232,.72);
      max-width:360px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .article-head{
      max-width:920px;
      position:relative;
      z-index:1;
    }
    .article-title{
      margin:18px 0 18px;
      font-size:clamp(30px,5vw,48px);
      line-height:1.18;
      letter-spacing:-.03em;
      font-weight:850;
      color:var(--text);
    }
    .article-summary{
      max-width:820px;
      color:var(--muted);
      font-size:18px;
      line-height:1.85;
      margin:0 0 24px;
    }
    .meta-row{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:12px;
      color:var(--weak);
      font-size:14px;
    }
    .meta-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      background:rgba(255,255,255,.045);
      border:1px solid var(--line);
    }
    .meta-dot{
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--brand);
    }
    .article-shell{
      padding:56px 0 0;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) minmax(240px,1fr);
      gap:34px;
      align-items:start;
    }
    .cover-card{
      grid-column:1 / -1;
      position:relative;
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      min-height:260px;
      background:var(--panel);
    }
    .cover-card img{
      width:100%;
      height:clamp(260px,36vw,430px);
      object-fit:cover;
      filter:saturate(.92) contrast(1.05);
    }
    .cover-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 45%,rgba(16,17,20,.72));
      pointer-events:none;
    }
    .cover-caption{
      position:absolute;
      left:24px;
      right:24px;
      bottom:20px;
      z-index:1;
      display:flex;
      justify-content:space-between;
      gap:18px;
      color:rgba(245,241,232,.78);
      font-size:14px;
    }
    .reader-card{
      background:rgba(25,26,31,.78);
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-soft);
      padding:34px;
      backdrop-filter:blur(10px);
    }
    .article-content{
      color:rgba(245,241,232,.92);
      font-size:17px;
      line-height:1.9;
      word-break:break-word;
    }
    .article-content > *:first-child{margin-top:0}
    .article-content h2{
      position:relative;
      margin:2.1em 0 .75em;
      padding-left:18px;
      color:var(--text);
      font-size:clamp(24px,3vw,32px);
      line-height:1.28;
      font-weight:800;
      letter-spacing:-.02em;
    }
    .article-content h2::before{
      content:"";
      position:absolute;
      left:0;
      top:.18em;
      width:5px;
      height:1.05em;
      border-radius:999px;
      background:linear-gradient(180deg,var(--brand),var(--brand-2));
      box-shadow:0 0 20px rgba(245,158,11,.26);
    }
    .article-content h3{
      margin:1.8em 0 .7em;
      color:#fff4df;
      font-size:23px;
      line-height:1.35;
      font-weight:760;
    }
    .article-content h4{
      margin:1.5em 0 .55em;
      color:#ffe0ac;
      font-size:19px;
      font-weight:720;
    }
    .article-content p{margin:0 0 1.18em}
    .article-content a{
      color:#ffd18a;
      border-bottom:1px solid rgba(245,158,11,.36);
      transition:var(--ease);
    }
    .article-content a:hover{color:var(--brand);border-color:var(--brand)}
    .article-content ul,.article-content ol{
      margin:1em 0 1.3em;
      padding-left:1.35em;
    }
    .article-content li{margin:.45em 0;color:rgba(245,241,232,.9)}
    .article-content blockquote{
      margin:1.6em 0;
      padding:22px 24px;
      border-left:4px solid var(--brand);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      background:linear-gradient(90deg,rgba(245,158,11,.13),rgba(255,255,255,.035));
      color:#f8e8ca;
    }
    .article-content img{
      width:auto;
      max-width:100%;
      height:auto;
      margin:1.8em auto;
      border-radius:20px;
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
    }
    .article-content figure{margin:1.8em 0}
    .article-content figcaption{
      margin-top:10px;
      text-align:center;
      color:var(--weak);
      font-size:14px;
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:1.8em 0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,255,255,.025);
      display:block;
      max-width:100%;
      overflow-x:auto;
    }
    .article-content tbody,.article-content thead{display:table;width:100%;min-width:640px}
    .article-content th,.article-content td{
      padding:14px 16px;
      border-bottom:1px solid var(--line);
      color:rgba(245,241,232,.9);
      text-align:left;
      vertical-align:top;
    }
    .article-content th{
      background:rgba(245,158,11,.13);
      color:#ffe2b1;
      font-weight:760;
    }
    .article-content tr:last-child td{border-bottom:none}
    .article-content code{
      padding:.2em .45em;
      border-radius:8px;
      background:rgba(255,255,255,.08);
      color:#ffd18a;
      font-size:.92em;
    }
    .article-content pre{
      padding:20px;
      border-radius:18px;
      background:#0d0e11;
      border:1px solid var(--line);
      overflow:auto;
      color:#f7e7c7;
      line-height:1.7;
    }
    .not-found{
      text-align:center;
      padding:70px 24px;
    }
    .not-found-icon{
      width:64px;
      height:64px;
      margin:0 auto 18px;
      border-radius:22px;
      display:grid;
      place-items:center;
      color:#19120a;
      font-weight:900;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 18px 38px rgba(245,158,11,.2);
    }
    .not-found h2{
      margin:0 0 12px;
      font-size:30px;
      color:var(--text);
    }
    .not-found p{
      max-width:520px;
      margin:0 auto 24px;
      color:var(--muted);
    }
    .side-panel{
      position:sticky;
      top:98px;
      display:grid;
      gap:18px;
    }
    .side-card{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg,rgba(36,37,43,.88),rgba(25,26,31,.88));
      padding:22px;
      box-shadow:var(--shadow-soft);
    }
    .side-title{
      margin:0 0 14px;
      font-size:18px;
      font-weight:800;
      color:var(--text);
    }
    .toc-list,.hint-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .toc-list a,.hint-list li{
      display:flex;
      gap:10px;
      color:var(--muted);
      font-size:14px;
      padding:10px 0;
      border-bottom:1px solid rgba(245,241,232,.08);
    }
    .toc-list a:hover{color:var(--brand);transform:translateX(3px)}
    .toc-list a::before,.hint-list li::before{
      content:"";
      width:7px;
      height:7px;
      margin-top:.72em;
      flex:0 0 auto;
      border-radius:50%;
      background:var(--brand);
      opacity:.8;
    }
    .side-cover{
      position:relative;
      overflow:hidden;
      padding:0;
    }
    .side-cover img{
      height:170px;
      width:100%;
      object-fit:cover;
    }
    .side-cover-text{
      padding:18px;
    }
    .side-cover-text p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .mini-cta{
      margin-top:34px;
      border:1px solid rgba(245,158,11,.22);
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 12% 20%,rgba(245,158,11,.2),transparent 30%),
        linear-gradient(135deg,rgba(36,37,43,.96),rgba(25,26,31,.94));
      padding:28px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      box-shadow:var(--shadow-soft);
    }
    .mini-cta h2{
      margin:0 0 8px;
      font-size:26px;
      line-height:1.3;
    }
    .mini-cta p{
      margin:0;
      color:var(--muted);
      max-width:650px;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .related-card{
      position:relative;
      min-height:220px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      padding:24px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(36,37,43,.76),rgba(25,26,31,.9));
      overflow:hidden;
      transition:var(--ease);
    }
    .related-card::before{
      content:"";
      position:absolute;
      inset:auto -40px -65px auto;
      width:150px;
      height:150px;
      border-radius:50%;
      background:rgba(245,158,11,.12);
      filter:blur(2px);
      transition:var(--ease);
    }
    .related-card:hover{
      transform:translateY(-4px);
      border-color:var(--line-strong);
      background:var(--card-hover);
      box-shadow:var(--shadow-soft);
    }
    .related-card:hover h3{color:var(--brand)}
    .related-card:hover::before{background:rgba(245,158,11,.2)}
    .related-card h3{
      position:relative;
      margin:14px 0 10px;
      font-size:20px;
      line-height:1.4;
      transition:var(--ease);
    }
    .related-card p{
      position:relative;
      color:var(--muted);
      margin:0;
      font-size:15px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .related-meta{
      position:relative;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:20px;
      color:var(--weak);
      font-size:13px;
    }
    .related-arrow{color:var(--brand);font-weight:900;transition:var(--ease)}
    .related-card:hover .related-arrow{transform:translateX(4px)}
    .guide-strip{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .guide-card{
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:rgba(25,26,31,.78);
      padding:28px;
      box-shadow:var(--shadow-soft);
    }
    .guide-card h3{margin:0 0 14px;font-size:24px}
    .guide-card p{margin:0;color:var(--muted)}
    .guide-steps{
      display:grid;
      gap:14px;
      margin-top:22px;
    }
    .guide-step{
      display:flex;
      gap:14px;
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.035);
      border:1px solid rgba(245,241,232,.09);
    }
    .step-num{
      width:32px;
      height:32px;
      border-radius:12px;
      display:grid;
      place-items:center;
      color:#19120a;
      font-weight:900;
      background:var(--brand);
      flex:0 0 auto;
    }
    .guide-step strong{display:block;color:var(--text);margin-bottom:2px}
    .guide-step span{display:block;color:var(--muted);font-size:14px}
    .feedback-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:
        linear-gradient(180deg,rgba(16,17,20,.42),rgba(16,17,20,.92)),
        url("/assets/images/coverpic/cover-3.webp") center/cover no-repeat;
      padding:30px;
      min-height:100%;
    }
    .feedback-card h3{margin:0 0 12px;font-size:24px}
    .feedback-card p{color:var(--muted);margin:0 0 20px}
    .feedback-form{display:grid;gap:12px}
    .form-control-custom{
      width:100%;
      min-height:48px;
      padding:12px 14px;
      border-radius:14px;
      border:1px solid rgba(245,241,232,.16);
      background:rgba(16,17,20,.76);
      color:var(--text);
      transition:var(--ease);
    }
    textarea.form-control-custom{min-height:118px;resize:vertical}
    .form-control-custom::placeholder{color:rgba(215,210,200,.58)}
    .form-control-custom:focus{
      border-color:var(--brand);
      box-shadow:0 0 0 4px rgba(245,158,11,.12);
      outline:none;
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:rgba(25,26,31,.78);
      overflow:hidden;
      transition:var(--ease);
    }
    .faq-item:hover{border-color:rgba(245,158,11,.28);background:rgba(36,37,43,.72)}
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:20px 22px;
      background:transparent;
      color:var(--text);
      text-align:left;
      font-weight:800;
    }
    .faq-icon{
      width:26px;
      height:26px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:var(--brand-soft);
      color:var(--brand);
      flex:0 0 auto;
      transition:var(--ease);
    }
    .faq-answer{
      display:none;
      padding:0 22px 20px;
      color:var(--muted);
    }
    .faq-item.is-open{
      border-color:var(--line-strong);
      background:rgba(245,158,11,.055);
    }
    .faq-item.is-open .faq-answer{display:block}
    .faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(245,158,11,.22)}
    .site-footer{
      margin-top:88px;
      background:#0b0c0f;
      border-top:1px solid var(--line);
      padding:54px 0 26px;
      color:var(--muted);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .8fr;
      gap:34px;
      padding-bottom:34px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:var(--text);
      font-size:18px;
      font-weight:850;
      margin-bottom:14px;
    }
    .footer-about p{
      max-width:520px;
      margin:0;
      color:var(--weak);
      line-height:1.85;
    }
    .footer-title{
      color:var(--text);
      font-weight:800;
      margin-bottom:14px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--weak);
      transition:var(--ease);
    }
    .footer-links a:hover{
      color:var(--brand);
      transform:translateX(3px);
    }
    .footer-copy{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      border-top:1px solid rgba(245,241,232,.09);
      color:rgba(215,210,200,.62);
      font-size:13px;
    }
    .footer-copy a{color:rgba(215,210,200,.75)}
    .footer-copy a:hover{color:var(--brand)}

    @media (max-width:1024px){
      .brand-text{max-width:260px}
      .nav-links{
        position:absolute;
        top:76px;
        left:20px;
        right:20px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:22px;
        padding:12px;
        background:rgba(21,22,26,.98);
        box-shadow:var(--shadow);
      }
      .nav-links.is-open{display:flex}
      .nav-links a{padding:13px 16px}
      .menu-toggle{display:flex}
      .article-layout{grid-template-columns:1fr}
      .side-panel{position:static;grid-template-columns:1fr 1fr}
      .related-grid{grid-template-columns:1fr 1fr}
      .guide-strip{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .section{padding:60px 0}
      .section-tight{padding:44px 0}
      .nav-wrap{min-height:68px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-text{max-width:190px}
      .nav-action .btn{display:none}
      .nav-links{top:68px}
      .article-banner{padding:36px 0 34px}
      .article-summary{font-size:16px}
      .reader-card{padding:24px 20px;border-radius:22px}
      .article-content{font-size:16px;line-height:1.86}
      .cover-caption{position:static;background:rgba(16,17,20,.9);padding:14px 18px;display:block}
      .cover-card::after{display:none}
      .side-panel{grid-template-columns:1fr}
      .mini-cta{align-items:flex-start;flex-direction:column}
      .mini-cta .btn{width:100%}
      .related-grid{grid-template-columns:1fr}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .brand-text{max-width:155px;font-size:14px}
      .article-title{font-size:29px}
      .meta-row{align-items:flex-start}
      .meta-item{width:100%;justify-content:flex-start}
      .article-shell{padding-top:36px}
      .cover-card img{height:220px}
      .reader-card{padding:20px 16px}
      .article-content h2{font-size:24px}
      .related-card{min-height:auto}
      .guide-card,.feedback-card,.side-card{padding:20px}
      .btn{width:100%}
      .footer-copy{display:block}
      .footer-copy span{display:block;margin-top:8px}
    }

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