/* roulang page: index */
:root{
      --primary:#7A2E58;
      --primary-dark:#4f1d39;
      --primary-soft:#f0dce7;
      --rose:#D66A8F;
      --apricot:#F3B6A8;
      --ink:#251722;
      --text:#38232f;
      --muted:#7f6a76;
      --weak:#a28d98;
      --bg:#FAF6F1;
      --bg-2:#fffaf6;
      --card:#ffffff;
      --line:rgba(122,46,88,.16);
      --line-strong:rgba(122,46,88,.28);
      --shadow:0 22px 60px rgba(80,28,58,.12);
      --shadow-hover:0 28px 70px rgba(80,28,58,.18);
      --radius-xl:34px;
      --radius-lg:26px;
      --radius-md:18px;
      --radius-sm:14px;
      --container:1200px;
      --ease:220ms ease-out;
      --gradient:linear-gradient(135deg,#7A2E58 0%,#D66A8F 58%,#F3B6A8 100%);
      --gradient-soft:linear-gradient(135deg,rgba(122,46,88,.12),rgba(214,106,143,.12),rgba(243,182,168,.18));
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 8% 4%,rgba(214,106,143,.22),transparent 28rem),
        radial-gradient(circle at 92% 12%,rgba(243,182,168,.22),transparent 30rem),
        linear-gradient(180deg,#fffaf7 0%,var(--bg) 38%,#fff 100%);
      line-height:1.78;
      min-width:320px;
    }
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(214,106,143,.25);color:var(--ink)}
    :focus-visible{outline:3px solid rgba(214,106,143,.5);outline-offset:3px;border-radius:12px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(250,246,241,.82);
      border-bottom:1px solid rgba(122,46,88,.12);
    }
    .nav-shell{
      height:78px;
      display:flex;
      align-items:center;
      gap:20px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:800;
      letter-spacing:-.02em;
      color:var(--ink);
    }
    .brand-mark{
      width:44px;height:44px;border-radius:16px;
      background:var(--gradient);
      box-shadow:0 14px 28px rgba(122,46,88,.24);
      position:relative;
      overflow:hidden;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      width:20px;height:26px;
      left:12px;top:9px;
      border-radius:6px 6px 10px 10px;
      background:rgba(255,255,255,.9);
      box-shadow:10px 4px 0 rgba(255,255,255,.38);
      transform:rotate(-8deg);
    }
    .brand-text{font-size:16px;white-space:nowrap}
    .nav-links{
      flex:1;
      display:flex;
      justify-content:center;
      gap:8px;
      align-items:center;
    }
    .nav-links a{
      min-height:42px;
      padding:9px 15px;
      border-radius:999px;
      color:var(--muted);
      font-weight:700;
      font-size:14px;
      transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .nav-links a:hover{
      background:rgba(122,46,88,.08);
      color:var(--primary);
      transform:translateY(-1px);
    }
    .nav-links a.active{
      background:var(--ink);
      color:#fff;
      box-shadow:0 12px 26px rgba(37,23,34,.16);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .command-search{
      height:46px;
      width:286px;
      display:flex;
      align-items:center;
      gap:9px;
      padding:0 12px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.72);
      box-shadow:0 10px 26px rgba(80,28,58,.06);
      transition:border var(--ease),box-shadow var(--ease),background var(--ease);
    }
    .command-search:focus-within{
      border-color:rgba(122,46,88,.48);
      box-shadow:0 0 0 5px rgba(214,106,143,.12);
      background:#fff;
    }
    .search-icon{color:var(--primary);font-size:15px}
    .command-search input{
      min-width:0;
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:var(--text);
      font-size:14px;
    }
    .command-search input::placeholder{color:var(--weak)}
    .keycap{
      padding:2px 7px;
      border:1px solid rgba(122,46,88,.18);
      border-radius:8px;
      background:#fff;
      color:var(--weak);
      font-size:12px;
      line-height:1.4;
      box-shadow:inset 0 -1px 0 rgba(122,46,88,.08);
    }
    .btn{
      min-height:44px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:11px 18px;
      border-radius:999px;
      font-weight:800;
      font-size:14px;
      transition:transform var(--ease),box-shadow var(--ease),filter var(--ease),border-color var(--ease),background var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:var(--gradient);
      box-shadow:0 15px 32px rgba(122,46,88,.23);
    }
    .btn-primary:hover{color:#fff;transform:translateY(-3px);filter:brightness(1.04);box-shadow:0 22px 46px rgba(122,46,88,.28)}
    .btn-secondary{
      color:var(--primary);
      background:rgba(255,255,255,.72);
      border:1px solid var(--line-strong);
    }
    .btn-secondary:hover{background:#fff;border-color:rgba(122,46,88,.45);transform:translateY(-2px)}
    .btn-text{
      color:var(--primary);
      padding-inline:4px;
      border-radius:12px;
      min-height:40px;
    }
    .btn-text:hover{text-decoration:underline;text-underline-offset:5px}
    .mobile-toggle{
      display:none;
      width:44px;height:44px;border-radius:16px;
      align-items:center;justify-content:center;
      color:var(--primary);
      background:#fff;
      border:1px solid var(--line);
    }
    .hero{
      padding:84px 0 64px;
      position:relative;
      overflow:hidden;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);
      gap:56px;
      align-items:center;
    }
    .eyebrow,.section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:6px 12px;
      border-radius:999px;
      background:rgba(122,46,88,.08);
      color:var(--primary);
      font-weight:800;
      font-size:13px;
      border:1px solid rgba(122,46,88,.12);
    }
    .eyebrow:before,.section-kicker:before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:var(--gradient);
      box-shadow:0 0 0 5px rgba(214,106,143,.12);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      margin:18px 0 18px;
      color:var(--ink);
      font-size:clamp(34px,5vw,62px);
      line-height:1.1;
      letter-spacing:-.055em;
      font-weight:800;
    }
    .hero-sub{
      max-width:670px;
      margin:0 0 28px;
      font-size:18px;
      color:var(--muted);
      line-height:1.9;
    }
    .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
    .metric-row{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:12px;
      max-width:700px;
    }
    .metric{
      padding:15px 14px;
      border-radius:20px;
      background:rgba(255,255,255,.72);
      border:1px solid var(--line);
      box-shadow:0 12px 28px rgba(80,28,58,.06);
    }
    .metric strong{
      display:block;
      color:var(--primary);
      font-size:23px;
      line-height:1.1;
      letter-spacing:-.03em;
    }
    .metric span{display:block;color:var(--muted);font-size:12px;margin-top:5px;font-weight:700}
    .cover-stack{position:relative;min-height:530px}
    .cover-card{
      position:absolute;
      border-radius:36px;
      border:1px solid rgba(255,255,255,.5);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .cover-main{
      inset:20px 20px 0 44px;
      padding:34px;
      background:
        radial-gradient(circle at 22% 22%,rgba(255,255,255,.35),transparent 12rem),
        radial-gradient(circle at 86% 80%,rgba(243,182,168,.45),transparent 13rem),
        var(--gradient);
      color:#fff;
    }
    .cover-main:after{
      content:"";
      position:absolute;
      inset:auto -30px -30px auto;
      width:210px;height:210px;
      border-radius:50%;
      border:36px solid rgba(255,255,255,.12);
    }
    .cover-side{
      left:0;top:74px;width:190px;min-height:248px;
      background:rgba(255,255,255,.88);
      padding:20px;
      transform:rotate(-5deg);
    }
    .cover-note{
      right:0;bottom:42px;width:230px;
      background:#fff;
      padding:20px;
      transform:rotate(4deg);
    }
    .cover-number{
      font-size:13px;
      letter-spacing:.08em;
      opacity:.86;
      font-weight:800;
    }
    .cover-title{
      position:relative;
      z-index:2;
      margin:38px 0 18px;
      font-size:38px;
      line-height:1.15;
      font-weight:800;
      letter-spacing:-.04em;
      max-width:310px;
    }
    .cover-line{
      width:100%;
      height:9px;
      border-radius:999px;
      background:rgba(255,255,255,.28);
      margin:12px 0;
    }
    .cover-line.short{width:64%}
    .cover-tags{display:flex;flex-wrap:wrap;gap:8px;position:relative;z-index:2}
    .tag,.badge{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:6px;
      min-height:30px;
      padding:5px 11px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      color:var(--primary);
      background:rgba(122,46,88,.08);
      border:1px solid rgba(122,46,88,.12);
      white-space:nowrap;
    }
    .tag.light{color:#fff;background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.28)}
    .badge.updated{background:rgba(214,106,143,.14);color:#9c315f}
    .badge.done{background:rgba(122,46,88,.08);color:var(--primary)}
    .badge.new{background:rgba(243,182,168,.28);color:#8e3c55}
    .badge.recommend{
      background:linear-gradient(#fff,#fff) padding-box,var(--gradient) border-box;
      border:1px solid transparent;
      color:var(--primary);
    }
    .mini-title{font-weight:800;color:var(--ink);line-height:1.35;margin-bottom:12px}
    .mini-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .mini-list li{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;font-weight:700}
    .dot{width:8px;height:8px;border-radius:50%;background:var(--rose);flex:0 0 auto}
    main section{padding:78px 0}
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:24px;
      align-items:flex-end;
      margin-bottom:32px;
    }
    .section-head h2{
      margin:12px 0 0;
      color:var(--ink);
      font-size:clamp(28px,3vw,40px);
      line-height:1.2;
      letter-spacing:-.04em;
    }
    .section-head p{
      max-width:560px;
      color:var(--muted);
      margin:0;
      font-size:16px;
    }
    .catalog-layout{
      display:grid;
      grid-template-columns:330px minmax(0,1fr);
      gap:24px;
      align-items:start;
    }
    .filter-panel{
      position:sticky;
      top:100px;
      border-radius:var(--radius-lg);
      padding:24px;
      background:rgba(255,255,255,.76);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .filter-panel h3{font-size:22px;color:var(--ink);margin-bottom:10px}
    .filter-panel p{color:var(--muted);font-size:14px;margin-bottom:20px}
    .filter-chips{display:flex;flex-wrap:wrap;gap:10px}
    .chip{
      min-height:38px;
      display:inline-flex;
      align-items:center;
      padding:8px 13px;
      border-radius:999px;
      color:var(--primary);
      background:#fff;
      border:1px solid var(--line);
      font-weight:800;
      font-size:13px;
      transition:transform var(--ease),border var(--ease),box-shadow var(--ease);
    }
    .chip:hover{transform:translateY(-2px);border-color:rgba(122,46,88,.35);box-shadow:0 10px 22px rgba(80,28,58,.08)}
    .chip.active{background:var(--primary);color:#fff}
    .catalog-list{display:grid;gap:16px}
    .catalog-card{
      display:grid;
      grid-template-columns:90px minmax(0,1fr) auto;
      gap:18px;
      align-items:center;
      padding:22px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:0 16px 38px rgba(80,28,58,.07);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .catalog-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(214,106,143,.38)}
    .index-no{
      width:76px;height:76px;border-radius:24px;
      display:flex;align-items:center;justify-content:center;
      color:#fff;font-weight:900;font-size:23px;
      background:var(--gradient);
      box-shadow:0 15px 30px rgba(122,46,88,.22);
    }
    .catalog-card h3{font-size:21px;line-height:1.35;color:var(--ink);margin:0 0 8px}
    .catalog-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}
    .catalog-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;color:var(--weak);font-size:13px;font-weight:800}
    .featured{background:linear-gradient(180deg,rgba(255,255,255,.65),rgba(250,246,241,.88))}
    .featured-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:22px;
    }
    .feature-large,.feature-card,.recommend-card,.quote-card,.faq-item,.cta-card{
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      border-radius:var(--radius-xl);
    }
    .feature-large{
      min-height:420px;
      padding:32px;
      position:relative;
      overflow:hidden;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .feature-large:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 82% 12%,rgba(243,182,168,.34),transparent 16rem),
        radial-gradient(circle at 10% 88%,rgba(122,46,88,.10),transparent 18rem);
      pointer-events:none;
    }
    .abstract-cover{
      position:absolute;
      right:28px;
      top:34px;
      width:210px;
      height:260px;
      border-radius:28px;
      background:var(--gradient);
      opacity:.9;
      transform:rotate(5deg);
      box-shadow:0 24px 48px rgba(122,46,88,.2);
    }
    .abstract-cover:before,.abstract-cover:after{
      content:"";
      position:absolute;
      left:28px;right:28px;
      height:10px;border-radius:999px;
      background:rgba(255,255,255,.35);
    }
    .abstract-cover:before{top:44px}
    .abstract-cover:after{top:72px;right:72px}
    .feature-content{position:relative;z-index:2;max-width:560px}
    .feature-large h3{font-size:30px;line-height:1.22;color:var(--ink);margin:18px 0 12px;letter-spacing:-.035em}
    .feature-large p{color:var(--muted);font-size:16px;max-width:520px}
    .feature-stack{display:grid;gap:18px}
    .feature-card{
      padding:24px;
      border-radius:var(--radius-lg);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(214,106,143,.38)}
    .feature-card h3{font-size:21px;color:var(--ink);margin:12px 0 8px}
    .feature-card p{font-size:14px;color:var(--muted);margin:0}
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      padding:24px;
      border-radius:var(--radius-xl);
      background:rgba(255,255,255,.72);
      border:1px solid var(--line);
      box-shadow:0 18px 44px rgba(80,28,58,.08);
    }
    .tag-cloud .tag{
      min-height:42px;
      padding:9px 15px;
      font-size:14px;
      transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
    }
    .tag-cloud .tag:hover{
      transform:translateY(-3px);
      background:linear-gradient(#fff,#fff) padding-box,var(--gradient) border-box;
      border-color:transparent;
    }
    .recommend-row{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
    }
    .recommend-card{
      border-radius:24px;
      padding:16px;
      display:grid;
      gap:13px;
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .recommend-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(214,106,143,.38)}
    .thumb{
      height:112px;
      border-radius:20px;
      background:
        linear-gradient(135deg,rgba(122,46,88,.9),rgba(214,106,143,.72),rgba(243,182,168,.86));
      position:relative;
      overflow:hidden;
    }
    .thumb:after{
      content:"";
      position:absolute;
      width:96px;height:96px;border-radius:50%;
      right:-24px;bottom:-22px;
      border:18px solid rgba(255,255,255,.18);
    }
    .recommend-card h3{font-size:17px;line-height:1.45;margin:0;color:var(--ink)}
    .recommend-card .small{color:var(--muted);font-size:13px;margin:0}
    .proof-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:18px;
    }
    .quote-card{
      padding:26px;
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg,#fff,rgba(250,246,241,.75));
    }
    .quote-card strong{display:block;color:var(--primary);font-size:28px;line-height:1.2;margin-bottom:8px}
    .quote-card p{margin:0;color:var(--muted);font-size:14px}
    .faq-wrap{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:28px;
      align-items:start;
    }
    .faq-list{display:grid;gap:14px}
    .faq-item{
      border-radius:24px;
      overflow:hidden;
      box-shadow:0 14px 34px rgba(80,28,58,.06);
    }
    .faq-question{
      width:100%;
      min-height:64px;
      padding:18px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      color:var(--ink);
      font-weight:800;
      text-align:left;
    }
    .faq-icon{
      width:30px;height:30px;
      border-radius:50%;
      display:flex;align-items:center;justify-content:center;
      background:rgba(122,46,88,.08);
      color:var(--primary);
      transition:transform var(--ease),background var(--ease);
      flex:0 0 auto;
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height 260ms ease-out;
      background:rgba(214,106,143,.07);
    }
    .faq-answer p{
      margin:0;
      padding:0 22px 20px;
      color:var(--muted);
      font-size:14px;
    }
    .faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(214,106,143,.18)}
    .cta-section{padding-top:50px}
    .cta-card{
      position:relative;
      overflow:hidden;
      padding:44px;
      color:#fff;
      background:
        radial-gradient(circle at 16% 18%,rgba(255,255,255,.22),transparent 16rem),
        radial-gradient(circle at 88% 72%,rgba(243,182,168,.38),transparent 18rem),
        var(--gradient);
      display:grid;
      grid-template-columns:minmax(0,1fr) auto;
      gap:24px;
      align-items:center;
    }
    .cta-card h2{font-size:clamp(28px,3vw,42px);line-height:1.18;margin:0 0 12px;letter-spacing:-.04em}
    .cta-card p{margin:0;max-width:650px;color:rgba(255,255,255,.86)}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .cta-card .btn-secondary{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.32)}
    .cta-card .btn-secondary:hover{background:rgba(255,255,255,.24)}
    .site-footer{
      margin-top:60px;
      background:var(--ink);
      color:rgba(255,255,255,.78);
      padding:56px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr .7fr .7fr 1fr;
      gap:30px;
      margin-bottom:36px;
    }
    .footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:900;margin-bottom:14px}
    .footer-brand .brand-mark{width:40px;height:40px;border-radius:15px}
    .footer-col h3{font-size:15px;color:#fff;margin:0 0 14px}
    .footer-col p{margin:0;color:rgba(255,255,255,.62);font-size:14px;line-height:1.9}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
    .footer-links a{color:rgba(255,255,255,.68);font-size:14px;transition:color var(--ease),padding var(--ease)}
    .footer-links a:hover{color:#fff;padding-left:4px}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.1);
      padding-top:22px;
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.5);
      font-size:13px;
    }
    .mobile-panel{
      display:none;
      padding:0 0 18px;
    }
    .mobile-panel.open{display:block}
    .mobile-panel-inner{
      display:grid;
      gap:10px;
      padding:14px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .mobile-panel a{
      min-height:44px;
      display:flex;
      align-items:center;
      padding:10px 14px;
      border-radius:16px;
      color:var(--muted);
      font-weight:800;
    }
    .mobile-panel a.active{background:var(--primary);color:#fff}
    .mobile-panel .command-search{width:100%;margin-top:4px}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    @media (max-width:1024px){
      .nav-links,.nav-actions{display:none}
      .mobile-toggle{display:flex;margin-left:auto}
      .hero{padding-top:58px}
      .hero-grid{grid-template-columns:1fr;gap:36px}
      .cover-stack{min-height:470px;max-width:620px;margin:0 auto;width:100%}
      .metric-row{grid-template-columns:repeat(2,minmax(0,1fr))}
      .catalog-layout,.faq-wrap{grid-template-columns:1fr}
      .filter-panel{position:relative;top:auto}
      .featured-grid{grid-template-columns:1fr}
      .recommend-row,.proof-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-grid{grid-template-columns:1fr 1fr}
      .cta-card{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .nav-shell{height:68px}
      .brand-text{font-size:14px;max-width:190px;white-space:normal;line-height:1.25}
      main section{padding:56px 0}
      .hero{padding:44px 0 36px}
      .hero-sub{font-size:16px}
      .metric-row{grid-template-columns:1fr 1fr}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .catalog-card{grid-template-columns:64px minmax(0,1fr);align-items:start}
      .index-no{width:58px;height:58px;border-radius:19px;font-size:18px}
      .catalog-side{grid-column:1 / -1;align-items:flex-start;flex-direction:row;flex-wrap:wrap}
      .abstract-cover{opacity:.35;right:16px;top:20px}
      .recommend-row,.proof-grid{grid-template-columns:1fr}
      .cover-main{inset:20px 6px 0 26px}
      .cover-side{width:160px}
      .cover-note{width:200px;right:4px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:grid}
    }
    @media (max-width:520px){
      .brand-mark{width:40px;height:40px;border-radius:14px}
      .hero-actions,.cta-actions{display:grid;grid-template-columns:1fr}
      .btn{width:100%}
      .metric-row{grid-template-columns:1fr}
      .cover-stack{min-height:430px}
      .cover-main{padding:26px;border-radius:30px}
      .cover-title{font-size:30px;margin-top:28px}
      .cover-side{display:none}
      .cover-note{left:16px;right:auto;bottom:12px;transform:none;width:220px}
      .feature-large,.cta-card{padding:28px;border-radius:28px}
      .filter-panel,.tag-cloud{padding:20px}
      .catalog-card{padding:18px;border-radius:24px}
    }

/* roulang page: category1 */
:root{
      --primary:#7A2E58;
      --primary-dark:#4F1D3A;
      --accent:#D66A8F;
      --peach:#F3B6A8;
      --ink:#251722;
      --muted:#76646F;
      --soft:#FAF6F1;
      --soft-rose:#F7E8EC;
      --soft-purple:#F1EAF2;
      --card:#FFFDFC;
      --border:rgba(122,46,88,.16);
      --border-strong:rgba(122,46,88,.28);
      --shadow:0 24px 70px rgba(76,28,57,.12);
      --shadow-hover:0 30px 82px rgba(76,28,57,.18);
      --radius-xl:34px;
      --radius-lg:26px;
      --radius-md:18px;
      --radius-pill:999px;
      --container:1200px;
      --ease:all .22s ease-out;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 12% 8%, rgba(214,106,143,.18), transparent 30%),
        radial-gradient(circle at 92% 18%, rgba(243,182,168,.22), transparent 28%),
        linear-gradient(180deg,#fffaf7 0%,#faf6f1 48%,#fffdfb 100%);
      line-height:1.78;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    input{border:0;outline:0;background:transparent}
    ::selection{background:rgba(214,106,143,.25)}
    :focus-visible{outline:3px solid rgba(122,46,88,.34);outline-offset:3px;border-radius:12px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .site-header{
      position:sticky;top:0;z-index:50;
      padding:14px 0;
      background:rgba(250,246,241,.78);
      backdrop-filter:blur(20px);
      border-bottom:1px solid rgba(122,46,88,.12);
    }
    .nav-shell{
      min-height:72px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:10px 12px 10px 16px;
      background:rgba(255,253,252,.72);
      border:1px solid var(--border);
      border-radius:24px;
      box-shadow:0 16px 44px rgba(76,28,57,.08);
    }
    .brand,.footer-brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em}
    .brand{min-width:max-content}
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      background:
        linear-gradient(135deg,var(--primary),var(--accent) 58%,var(--peach)),
        radial-gradient(circle at 30% 25%,rgba(255,255,255,.72),transparent 24%);
      box-shadow:0 14px 28px rgba(122,46,88,.24);
      position:relative;flex:0 0 auto;
    }
    .brand-mark:before,.brand-mark:after{
      content:"";position:absolute;border-radius:8px;background:rgba(255,255,255,.72)
    }
    .brand-mark:before{width:16px;height:22px;left:9px;top:10px;transform:rotate(-7deg)}
    .brand-mark:after{width:13px;height:19px;right:9px;top:13px;opacity:.78;transform:rotate(8deg)}
    .brand-text{font-size:17px;color:var(--ink)}
    .nav-links{display:flex;align-items:center;gap:6px;padding:5px;background:rgba(247,232,236,.58);border-radius:var(--radius-pill)}
    .nav-links a,.mobile-panel a{
      min-height:40px;display:inline-flex;align-items:center;
      padding:0 16px;border-radius:var(--radius-pill);
      font-size:14px;font-weight:700;color:#5f4a58;transition:var(--ease)
    }
    .nav-links a:hover,.mobile-panel a:hover{color:var(--primary);background:rgba(255,255,255,.75)}
    .nav-links a.active,.mobile-panel a.active{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 12px 26px rgba(122,46,88,.22)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .command-search{
      height:46px;min-width:280px;display:flex;align-items:center;gap:9px;
      padding:0 12px 0 15px;border:1px solid var(--border);
      background:rgba(255,255,255,.82);border-radius:var(--radius-pill);
      transition:var(--ease)
    }
    .command-search:focus-within{border-color:rgba(122,46,88,.55);box-shadow:0 0 0 5px rgba(122,46,88,.1)}
    .search-icon{font-size:18px;color:var(--primary)}
    .command-search input{width:100%;min-width:90px;color:var(--ink)}
    .command-search input::placeholder{color:#9b8793}
    .keycap{
      font-size:12px;color:#765b6a;background:#f3e8ec;border:1px solid var(--border);
      padding:2px 7px;border-radius:9px;line-height:1.4
    }
    .btn{
      min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:0 18px;border-radius:var(--radius-pill);
      font-size:14px;font-weight:800;transition:var(--ease);white-space:nowrap
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent) 62%,#e999a5);
      box-shadow:0 16px 34px rgba(122,46,88,.24)
    }
    .btn-primary:hover{transform:translateY(-3px);filter:brightness(1.04);box-shadow:var(--shadow-hover)}
    .btn-secondary{
      color:var(--primary);background:rgba(255,255,255,.74);
      border:1px solid var(--border-strong)
    }
    .btn-secondary:hover{transform:translateY(-2px);background:#fff;border-color:rgba(122,46,88,.4)}
    .btn-soft{color:var(--primary);background:rgba(247,232,236,.9);border:1px solid var(--border)}
    .btn-soft:hover{background:#fff;transform:translateY(-2px)}
    .mobile-toggle{
      display:none;width:46px;height:46px;border-radius:16px;
      color:var(--primary);background:rgba(247,232,236,.78);border:1px solid var(--border)
    }
    .mobile-panel{display:none}
    .page-hero{padding:58px 0 42px}
    .breadcrumb{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;
      margin-bottom:18px;color:var(--muted);font-size:14px;font-weight:700
    }
    .breadcrumb a{color:var(--primary)}
    .breadcrumb a:hover{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
    .hero-strip{
      position:relative;overflow:hidden;
      display:grid;grid-template-columns:1.35fr .65fr;gap:28px;align-items:stretch;
      padding:38px;border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 88% 24%,rgba(243,182,168,.55),transparent 30%),
        linear-gradient(135deg,rgba(122,46,88,.96),rgba(214,106,143,.86) 58%,rgba(243,182,168,.86));
      color:#fff;box-shadow:var(--shadow)
    }
    .hero-strip:before{
      content:"";position:absolute;inset:0;
      background:linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(180deg,rgba(255,255,255,.08) 1px,transparent 1px);
      background-size:34px 34px;opacity:.25
    }
    .hero-content,.hero-panel{position:relative;z-index:1}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      min-height:34px;padding:0 14px;border-radius:var(--radius-pill);
      background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
      color:#fff;font-size:13px;font-weight:800
    }
    h1{
      margin:18px 0 16px;
      max-width:820px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.12;letter-spacing:-.05em
    }
    .hero-lead{max-width:760px;margin:0;color:rgba(255,255,255,.88);font-size:18px;line-height:1.85}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .data-badge{
      display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:16px;
      background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.24);
      color:#fff;font-size:13px;font-weight:800
    }
    .hero-panel{
      display:grid;gap:14px;
      padding:22px;border-radius:28px;
      background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.24);
      backdrop-filter:blur(12px)
    }
    .panel-row{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:14px;border-radius:18px;background:rgba(255,255,255,.14)}
    .panel-row strong{font-size:26px;line-height:1}
    .panel-row span{font-size:13px;color:rgba(255,255,255,.82)}
    main{position:relative}
    section{padding:68px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
    .section-kicker{
      color:var(--primary);font-weight:900;font-size:13px;letter-spacing:.08em
    }
    h2{margin:6px 0 0;font-size:clamp(28px,3.2vw,40px);line-height:1.2;letter-spacing:-.035em}
    .section-desc{max-width:620px;margin:0;color:var(--muted);font-size:16px}
    .filter-bar{
      display:grid;grid-template-columns:1.2fr auto auto auto;gap:12px;
      padding:14px;border-radius:26px;background:rgba(255,255,255,.72);
      border:1px solid var(--border);box-shadow:0 18px 54px rgba(76,28,57,.08)
    }
    .filter-search{
      height:52px;display:flex;align-items:center;gap:10px;
      padding:0 16px;border-radius:18px;background:#fff;border:1px solid var(--border);
      transition:var(--ease)
    }
    .filter-search:focus-within{border-color:rgba(122,46,88,.58);box-shadow:0 0 0 5px rgba(122,46,88,.1)}
    .filter-chip,.sort-btn{
      min-height:52px;display:inline-flex;align-items:center;justify-content:center;
      padding:0 18px;border-radius:18px;border:1px solid var(--border);
      color:var(--primary);background:#fff;font-weight:800;transition:var(--ease)
    }
    .filter-chip.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 14px 28px rgba(122,46,88,.18)}
    .sort-btn:hover,.filter-chip:hover{transform:translateY(-2px);border-color:var(--border-strong)}
    .archive-layout{
      display:grid;grid-template-columns:.92fr 1.08fr;gap:22px;align-items:start
    }
    .feature-card,.list-card,.timeline-card,.recommend-card,.faq-item,.cta-card{
      background:rgba(255,253,252,.86);
      border:1px solid var(--border);
      box-shadow:0 18px 54px rgba(76,28,57,.08);
      transition:var(--ease)
    }
    .feature-card{
      position:sticky;top:124px;overflow:hidden;border-radius:var(--radius-xl)
    }
    .feature-cover{
      min-height:260px;padding:28px;position:relative;overflow:hidden;
      background:
        radial-gradient(circle at 78% 18%,rgba(255,255,255,.42),transparent 24%),
        linear-gradient(135deg,var(--primary),var(--accent),var(--peach));
      color:#fff
    }
    .cover-index{font-size:14px;font-weight:900;opacity:.88}
    .cover-title{margin-top:70px;font-size:30px;font-weight:900;line-height:1.18;letter-spacing:-.03em}
    .cover-lines{position:absolute;right:28px;top:34px;display:grid;gap:10px;width:150px}
    .cover-lines i{height:10px;border-radius:999px;background:rgba(255,255,255,.28)}
    .feature-body{padding:28px}
    .feature-body h3,.list-card h3,.recommend-card h3,.timeline-card h3{margin:0 0 10px;font-size:22px;line-height:1.35}
    .feature-body p,.list-card p,.recommend-card p,.timeline-card p{margin:0;color:var(--muted)}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
    .tag{
      display:inline-flex;align-items:center;min-height:30px;padding:0 11px;
      border-radius:var(--radius-pill);background:var(--soft-rose);
      color:var(--primary);font-size:13px;font-weight:800;border:1px solid rgba(122,46,88,.1);
      transition:var(--ease)
    }
    .tag:hover{background:#fff;border-color:var(--border-strong);transform:translateY(-1px)}
    .meta-line{display:flex;flex-wrap:wrap;gap:10px;color:#8a7581;font-size:13px;font-weight:700}
    .status{
      display:inline-flex;align-items:center;min-height:28px;padding:0 10px;
      border-radius:999px;font-size:12px;font-weight:900
    }
    .status.update{background:#ffe5ed;color:#973d62}
    .status.done{background:#eee7f0;color:#5f4260}
    .status.new{background:#fff0e8;color:#9b4b3d}
    .status.recommend{background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,var(--primary),var(--accent)) border-box;border:1px solid transparent;color:var(--primary)}
    .list-stack{display:grid;gap:14px}
    .list-card{
      display:grid;grid-template-columns:96px 1fr auto;gap:18px;align-items:center;
      padding:18px;border-radius:24px
    }
    .list-card:hover,.feature-card:hover,.timeline-card:hover,.recommend-card:hover{
      transform:translateY(-5px);border-color:var(--border-strong);box-shadow:var(--shadow-hover)
    }
    .thumb{
      width:96px;height:96px;border-radius:22px;display:grid;place-items:center;
      color:#fff;font-weight:900;font-size:22px;
      background:linear-gradient(135deg,var(--primary),var(--accent) 58%,var(--peach));
      overflow:hidden;position:relative
    }
    .thumb:after{content:"";position:absolute;inset:14px;border-radius:16px;border:1px solid rgba(255,255,255,.32)}
    .card-action{display:flex;flex-direction:column;gap:8px;align-items:flex-end}
    .icon-btn{
      width:42px;height:42px;border-radius:15px;background:var(--soft-rose);
      color:var(--primary);display:grid;place-items:center;border:1px solid var(--border);
      transition:var(--ease)
    }
    .icon-btn:hover{background:#fff;transform:translateY(-2px)}
    .timeline-wrap{display:grid;gap:16px;position:relative}
    .timeline-card{
      display:grid;grid-template-columns:42px 1fr;gap:18px;padding:22px;border-radius:24px
    }
    .time-dot{
      width:42px;height:42px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 26px rgba(122,46,88,.18);position:relative
    }
    .time-dot:after{content:"";position:absolute;left:50%;top:48px;width:2px;height:58px;background:rgba(122,46,88,.16)}
    .timeline-card:last-child .time-dot:after{display:none}
    .pager{display:flex;justify-content:center;gap:10px;margin-top:30px;flex-wrap:wrap}
    .page-btn{
      min-width:44px;height:44px;padding:0 15px;border-radius:15px;
      display:inline-flex;align-items:center;justify-content:center;
      background:#fff;border:1px solid var(--border);color:var(--primary);font-weight:900;
      transition:var(--ease)
    }
    .page-btn.active{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-color:transparent;box-shadow:0 14px 28px rgba(122,46,88,.2)}
    .page-btn:hover{transform:translateY(-2px);border-color:var(--border-strong)}
    .recommend-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .recommend-card{border-radius:24px;padding:20px}
    .mini-cover{
      height:112px;border-radius:20px;margin-bottom:16px;
      background:
        linear-gradient(135deg,rgba(122,46,88,.9),rgba(214,106,143,.72)),
        radial-gradient(circle at 70% 24%,rgba(243,182,168,.8),transparent 32%);
      position:relative;overflow:hidden
    }
    .mini-cover:before{content:"";position:absolute;inset:22px;border:1px solid rgba(255,255,255,.32);border-radius:16px}
    .faq-grid{display:grid;gap:12px;max-width:900px;margin:0 auto}
    .faq-item{border-radius:22px;overflow:hidden}
    .faq-question{
      width:100%;min-height:64px;padding:18px 22px;
      display:flex;justify-content:space-between;align-items:center;gap:20px;
      background:transparent;color:var(--ink);font-weight:900;text-align:left
    }
    .faq-question span:last-child{color:var(--primary);font-size:22px;transition:var(--ease)}
    .faq-answer{max-height:0;overflow:hidden;transition:max-height .24s ease-out;background:rgba(247,232,236,.5)}
    .faq-answer p{margin:0;padding:0 22px 20px;color:var(--muted)}
    .faq-item.open .faq-answer{max-height:180px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-card{
      position:relative;overflow:hidden;border-radius:var(--radius-xl);padding:38px;
      display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
      background:
        radial-gradient(circle at 86% 22%,rgba(243,182,168,.52),transparent 28%),
        linear-gradient(135deg,var(--primary),var(--accent));
      color:#fff
    }
    .cta-card h2{margin:0 0 10px}
    .cta-card p{margin:0;max-width:680px;color:rgba(255,255,255,.86)}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap}
    .cta-card .btn-secondary{background:rgba(255,255,255,.15);color:#fff;border-color:rgba(255,255,255,.35)}
    .cta-card .btn-primary{background:#fff;color:var(--primary);box-shadow:0 18px 44px rgba(37,23,34,.18)}
    .site-footer{
      margin-top:50px;padding:64px 0 26px;
      background:var(--ink);color:rgba(255,255,255,.78)
    }
    .footer-grid{display:grid;grid-template-columns:1.3fr .7fr .8fr 1fr;gap:34px}
    .footer-brand{color:#fff;font-size:18px;margin-bottom:14px}
    .footer-col p{margin:0;color:rgba(255,255,255,.68)}
    .footer-col h3{margin:0 0 14px;color:#fff;font-size:16px}
    .footer-links{list-style:none;padding:0;margin:0;display:grid;gap:10px}
    .footer-links a{color:rgba(255,255,255,.72);transition:var(--ease)}
    .footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
    .footer-bottom{
      margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
      display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
      color:rgba(255,255,255,.56);font-size:13px
    }
    @media (max-width:1024px){
      .nav-links,.nav-actions{display:none}
      .mobile-toggle{display:grid;place-items:center}
      .mobile-panel{display:none;margin-top:10px}
      .mobile-panel.open{display:block}
      .mobile-panel-inner{
        display:grid;gap:10px;padding:14px;border-radius:24px;background:rgba(255,253,252,.96);
        border:1px solid var(--border);box-shadow:var(--shadow)
      }
      .mobile-panel .command-search{min-width:0;width:100%}
      .hero-strip,.archive-layout,.cta-card{grid-template-columns:1fr}
      .feature-card{position:relative;top:auto}
      .filter-bar{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .site-header{padding:10px 0}
      .nav-shell{min-height:64px;border-radius:20px}
      .brand-text{font-size:15px;max-width:210px;line-height:1.25}
      .brand-mark{width:38px;height:38px}
      .page-hero{padding:38px 0 24px}
      .hero-strip{padding:26px;border-radius:26px}
      .hero-lead{font-size:16px}
      section{padding:48px 0}
      .section-head{display:block}
      .section-desc{margin-top:10px}
      .filter-bar{grid-template-columns:1fr}
      .list-card{grid-template-columns:76px 1fr;align-items:start}
      .thumb{width:76px;height:76px;border-radius:18px;font-size:18px}
      .card-action{grid-column:1/-1;flex-direction:row;align-items:center;justify-content:flex-start}
      .recommend-grid{grid-template-columns:1fr}
      .cta-actions{width:100%}
      .cta-actions .btn{flex:1;min-width:150px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      h1{font-size:32px}
      h2{font-size:27px}
      .hero-strip{padding:22px}
      .panel-row{display:block}
      .filter-chip,.sort-btn,.filter-search{min-height:48px}
      .list-card{grid-template-columns:1fr}
      .thumb{width:100%;height:96px}
      .cta-card{padding:26px;border-radius:26px}
      .cta-actions .btn{width:100%;flex:auto}
      .footer-bottom{display:grid}
    }