/* roulang page: index */
:root{
      --bg:#0E0B12;
      --bg-2:#120E18;
      --panel:#18121F;
      --panel-2:#211728;
      --panel-3:#261B2F;
      --primary:#FF4D6D;
      --primary-2:#FF6B7F;
      --accent:#FFB86B;
      --violet:#8B7CF6;
      --text:#F6F0F4;
      --muted:#B8AEBB;
      --weak:#817789;
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.18);
      --shadow:0 24px 70px rgba(0,0,0,.38);
      --glow:0 18px 54px rgba(255,77,109,.22);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --container:1210px;
      --ease:cubic-bezier(.2,.8,.2,1);
      --font:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 12% 6%,rgba(255,77,109,.16),transparent 34%),
        radial-gradient(circle at 82% 10%,rgba(139,124,246,.16),transparent 30%),
        radial-gradient(circle at 72% 80%,rgba(255,184,107,.10),transparent 34%),
        linear-gradient(180deg,var(--bg-2),var(--bg) 46%,#0A080D);
      line-height:1.75;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.36;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:64px 64px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
      z-index:-2;
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.18;
      background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(/%23n)' opacity='.45'/%3E%3C/svg%3E");
      z-index:-1;
      mix-blend-mode:soft-light;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    :focus-visible{outline:3px solid rgba(255,77,109,.55);outline-offset:4px;border-radius:12px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(14,11,18,.68);
      border-bottom:1px solid rgba(255,255,255,.07);
      transition:background .25s var(--ease),box-shadow .25s var(--ease);
    }
    .site-header.is-scrolled{background:rgba(14,11,18,.92);box-shadow:0 16px 38px rgba(0,0,0,.28)}
    .nav{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      font-weight:850;
      letter-spacing:-.02em;
      white-space:nowrap;
    }
    .logo-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:
        radial-gradient(circle at 70% 28%,rgba(255,184,107,.95),transparent 25%),
        linear-gradient(135deg,var(--primary),var(--violet));
      box-shadow:0 12px 32px rgba(255,77,109,.24);
      position:relative;
      flex:0 0 auto;
    }
    .logo-mark::before{
      content:"";
      width:0;height:0;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      border-left:13px solid #fff;
      margin-left:3px;
      filter:drop-shadow(0 2px 7px rgba(0,0,0,.25));
    }
    .logo-text{font-size:18px;color:#fff}
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:7px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.035);
      border-radius:999px;
    }
    .nav-links a{
      color:var(--muted);
      font-size:14px;
      font-weight:650;
      padding:9px 14px;
      border-radius:999px;
      transition:color .2s var(--ease),background .2s var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.08)}
    .nav-action{display:flex;align-items:center;gap:12px}
    .mobile-toggle{
      display:none;
      width:46px;height:46px;
      border-radius:16px;
      background:rgba(255,255,255,.06);
      border:1px solid var(--line);
      color:#fff;
      position:relative;
    }
    .mobile-toggle span,.mobile-toggle::before,.mobile-toggle::after{
      content:"";
      position:absolute;
      left:13px;right:13px;height:2px;
      background:#fff;border-radius:999px;
      transition:transform .25s var(--ease),opacity .25s var(--ease),top .25s var(--ease);
    }
    .mobile-toggle span{top:22px}
    .mobile-toggle::before{top:15px}
    .mobile-toggle::after{top:29px}
    .mobile-toggle.open span{opacity:0}
    .mobile-toggle.open::before{top:22px;transform:rotate(45deg)}
    .mobile-toggle.open::after{top:22px;transform:rotate(-45deg)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:13px 20px;
      border-radius:999px;
      font-weight:760;
      font-size:14.5px;
      line-height:1;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
      user-select:none;
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:var(--glow);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 62px rgba(255,77,109,.33)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.045);
      border:1px solid var(--line-strong);
    }
    .btn-secondary:hover{border-color:rgba(255,77,109,.55);background:rgba(255,255,255,.075);transform:translateY(-2px)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:#FFD0D8;
      font-weight:720;
      transition:color .2s var(--ease),gap .2s var(--ease);
    }
    .text-link:hover{color:var(--accent);gap:10px}
    main{position:relative}
    .section{padding:96px 0}
    .section-tight{padding:72px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:#FFD5DC;
      background:rgba(255,77,109,.13);
      border:1px solid rgba(255,77,109,.22);
      font-size:13px;
      font-weight:720;
    }
    .eyebrow::before{
      content:"";
      width:7px;height:7px;border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 20px rgba(255,184,107,.7);
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-title{
      margin:14px 0 0;
      max-width:760px;
      font-size:clamp(28px,4vw,42px);
      line-height:1.18;
      letter-spacing:-.035em;
    }
    .section-desc{
      margin:12px 0 0;
      max-width:680px;
      color:var(--muted);
      font-size:16px;
    }
    .hero{
      min-height:calc(100vh - 76px);
      display:grid;
      align-items:center;
      padding:82px 0 72px;
      position:relative;
    }
    .hero-shell{
      display:grid;
      grid-template-columns:minmax(0,1.02fr) minmax(420px,.88fr);
      gap:44px;
      align-items:center;
    }
    .hero-copy{position:relative;z-index:2}
    .hero h1{
      margin:18px 0 18px;
      max-width:780px;
      font-size:clamp(36px,6.2vw,68px);
      line-height:1.08;
      letter-spacing:-.055em;
      font-weight:880;
    }
    .hero-gradient{
      background:linear-gradient(100deg,#fff 0%,#FFD5DC 38%,#FFB86B 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-sub{
      margin:0;
      max-width:710px;
      color:var(--muted);
      font-size:18px;
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:30px;
    }
    .mini-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:30px;
    }
    .mini-tag,.badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
      color:var(--muted);
      font-size:13px;
      font-weight:650;
    }
    .mini-tag i,.badge i{
      width:7px;height:7px;border-radius:999px;
      background:var(--primary);
      box-shadow:0 0 16px rgba(255,77,109,.75);
      display:inline-block;
    }
    .hero-board{
      min-height:565px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line-strong);
      background:
        linear-gradient(180deg,rgba(14,11,18,.14),rgba(14,11,18,.82)),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
      padding:26px;
    }
    .hero-board::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 22% 20%,rgba(255,77,109,.35),transparent 26%),
        radial-gradient(circle at 86% 70%,rgba(139,124,246,.32),transparent 30%),
        linear-gradient(180deg,rgba(0,0,0,.15),rgba(0,0,0,.72));
      pointer-events:none;
    }
    .board-content{
      position:relative;
      z-index:1;
      height:100%;
      display:grid;
      grid-template-rows:auto 1fr auto;
      gap:20px;
    }
    .watch-panel{
      border-radius:26px;
      padding:18px;
      background:rgba(18,14,24,.74);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(16px);
    }
    .panel-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:15px}
    .panel-title{font-weight:800;font-size:16px}
    .status-dot{display:inline-flex;align-items:center;gap:7px;color:#FFE3E8;font-size:13px;font-weight:700}
    .status-dot::before{content:"";width:9px;height:9px;border-radius:50%;background:#52E39A;box-shadow:0 0 18px rgba(82,227,154,.7)}
    .preview-row{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}
    .preview-card{
      min-height:162px;
      border-radius:22px;
      overflow:hidden;
      position:relative;
      border:1px solid rgba(255,255,255,.14);
      background:linear-gradient(135deg,rgba(255,77,109,.22),rgba(139,124,246,.16));
    }
    .preview-card img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) brightness(.66);transition:transform .35s var(--ease)}
    .preview-card:hover img{transform:scale(1.04)}
    .play-icon{
      position:absolute;
      left:18px;bottom:18px;
      width:48px;height:48px;border-radius:50%;
      display:grid;place-items:center;
      background:rgba(255,255,255,.18);
      border:1px solid rgba(255,255,255,.24);
      backdrop-filter:blur(12px);
    }
    .play-icon::before{
      content:"";width:0;height:0;
      border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:13px solid #fff;margin-left:3px;
    }
    .signal-list{display:grid;gap:10px}
    .signal{
      padding:13px;
      border-radius:18px;
      background:rgba(255,255,255,.075);
      border:1px solid rgba(255,255,255,.10);
    }
    .signal b{display:block;font-size:13px;line-height:1.35}
    .signal span{display:block;margin-top:5px;font-size:12px;color:var(--muted);line-height:1.45}
    .heat-card{
      align-self:end;
      border-radius:26px;
      padding:20px;
      background:rgba(24,18,31,.78);
      border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(18px);
    }
    .heat-grid{display:grid;gap:13px;margin-top:14px}
    .heat-item{display:grid;gap:7px}
    .heat-label{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;font-weight:650}
    .bar{height:8px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden}
    .bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent))}
    .floating-note{
      display:flex;
      align-items:center;
      gap:13px;
      border-radius:22px;
      padding:14px 16px;
      background:rgba(255,184,107,.12);
      border:1px solid rgba(255,184,107,.22);
      color:#FFE6C5;
      font-weight:650;
      font-size:14px;
    }
    .floating-note em{font-style:normal;color:#fff}
    .bento{
      display:grid;
      grid-template-columns:1.18fr .82fr .82fr;
      grid-template-rows:repeat(2,minmax(156px,auto));
      gap:18px;
    }
    .bento-card{
      position:relative;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(145deg,rgba(33,23,40,.96),rgba(24,18,31,.82));
      padding:24px;
      box-shadow:0 20px 58px rgba(0,0,0,.22);
      transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
    }
    .bento-card:hover{transform:translateY(-4px);border-color:rgba(255,77,109,.38);background:linear-gradient(145deg,rgba(40,28,49,.98),rgba(24,18,31,.9))}
    .bento-card.big{grid-row:span 2;min-height:330px;background:
      linear-gradient(130deg,rgba(24,18,31,.88),rgba(24,18,31,.75)),
      url("/assets/images/backpic/back-2.jpg") center/cover no-repeat}
    .bento-card.big::before{
      content:"";
      position:absolute;inset:0;
      background:radial-gradient(circle at 15% 20%,rgba(255,77,109,.26),transparent 36%);
      pointer-events:none;
    }
    .bento-icon{
      width:48px;height:48px;border-radius:17px;
      display:grid;place-items:center;
      background:rgba(255,77,109,.13);
      border:1px solid rgba(255,77,109,.22);
      color:#FFD3DA;
      font-size:22px;
      margin-bottom:18px;
    }
    .bento-card h3{margin:0 0 8px;font-size:22px;line-height:1.25}
    .bento-card p{margin:0 0 18px;color:var(--muted);font-size:15px}
    .value-layout{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:38px;
      align-items:start;
    }
    .side-card{
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      padding:30px;
      background:linear-gradient(180deg,rgba(33,23,40,.82),rgba(24,18,31,.82));
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .side-card::after{
      content:"";
      position:absolute;
      width:210px;height:210px;border-radius:50%;
      right:-80px;bottom:-80px;
      background:rgba(255,77,109,.18);
      filter:blur(20px);
    }
    .side-card p{color:var(--muted);margin:16px 0 0}
    .check-list{display:grid;gap:15px}
    .check-item{
      display:grid;
      grid-template-columns:52px 1fr;
      gap:16px;
      padding:20px;
      border:1px solid var(--line);
      border-radius:22px;
      background:rgba(255,255,255,.045);
      transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
    }
    .check-item:hover{transform:translateY(-3px);border-color:rgba(255,184,107,.32);background:rgba(255,255,255,.065)}
    .check-icon{
      width:52px;height:52px;border-radius:18px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(255,77,109,.20),rgba(255,184,107,.12));
      border:1px solid rgba(255,77,109,.22);
      color:#FFD2D9;font-weight:850;
    }
    .check-item h3{margin:0 0 5px;font-size:19px}
    .check-item p{margin:0;color:var(--muted);font-size:15px}
    .updates-wrap{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:24px;
      align-items:start;
    }
    .post-list{display:grid;gap:16px}
    .post-card{
      display:grid;
      grid-template-columns:190px 1fr;
      gap:18px;
      padding:16px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:rgba(255,255,255,.045);
      transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
      overflow:hidden;
    }
    .post-card:hover{transform:translateY(-4px);border-color:rgba(255,77,109,.35);background:rgba(255,255,255,.065)}
    .post-cover{
      min-height:132px;
      border-radius:20px;
      overflow:hidden;
      position:relative;
      background:linear-gradient(135deg,rgba(255,77,109,.28),rgba(139,124,246,.24));
    }
    .post-cover img{width:100%;height:100%;object-fit:cover;filter:brightness(.76) saturate(.95);transition:transform .35s var(--ease)}
    .post-card:hover .post-cover img{transform:scale(1.04)}
    .post-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent,rgba(0,0,0,.45));
    }
    .post-body{min-width:0;padding:4px 4px 2px}
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
      margin-bottom:9px;
      color:var(--weak);
      font-size:12.5px;
      font-weight:650;
    }
    .category{
      color:#FFD4DC;
      background:rgba(255,77,109,.14);
      border:1px solid rgba(255,77,109,.22);
      border-radius:999px;
      padding:4px 9px;
    }
    .post-card h3{
      margin:0 0 8px;
      font-size:21px;
      line-height:1.32;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .post-card p{
      margin:0 0 13px;
      color:var(--muted);
      font-size:15px;
      line-height:1.7;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .update-aside{
      position:sticky;
      top:100px;
      display:grid;
      gap:16px;
    }
    .feature-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(33,23,40,.88),rgba(24,18,31,.88));
      padding:24px;
      box-shadow:0 20px 52px rgba(0,0,0,.20);
      overflow:hidden;
      position:relative;
    }
    .feature-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(circle at 75% 18%,rgba(255,184,107,.16),transparent 36%);
      pointer-events:none;
    }
    .feature-card h3{margin:0 0 10px;font-size:21px;position:relative}
    .feature-card p{margin:0;color:var(--muted);font-size:15px;position:relative}
    .empty-state{
      border:1px dashed rgba(255,255,255,.20);
      border-radius:var(--radius-lg);
      padding:42px 24px;
      text-align:center;
      background:rgba(255,255,255,.035);
      color:var(--muted);
    }
    .empty-state .empty-icon{
      width:62px;height:62px;border-radius:22px;
      display:grid;place-items:center;
      margin:0 auto 14px;
      background:rgba(255,77,109,.13);
      border:1px solid rgba(255,77,109,.22);
      color:#FFD4DC;
      font-size:26px;
    }
    .guide{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      counter-reset:step;
    }
    .step{
      counter-increment:step;
      position:relative;
      padding:24px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:rgba(255,255,255,.045);
      min-height:220px;
      overflow:hidden;
    }
    .step::before{
      content:counter(step,decimal-leading-zero);
      display:inline-grid;
      place-items:center;
      width:48px;height:48px;
      border-radius:17px;
      margin-bottom:20px;
      color:#fff;
      font-weight:850;
      background:linear-gradient(135deg,var(--primary),var(--violet));
      box-shadow:0 14px 34px rgba(255,77,109,.20);
    }
    .step::after{
      content:"";
      position:absolute;
      top:47px;
      right:-30px;
      width:60px;height:1px;
      background:linear-gradient(90deg,rgba(255,77,109,.6),transparent);
    }
    .step:last-child::after{display:none}
    .step h3{margin:0 0 8px;font-size:20px}
    .step p{margin:0;color:var(--muted);font-size:15px}
    .compare{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:22px;
      align-items:stretch;
    }
    .image-card{
      min-height:430px;
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid var(--line);
      position:relative;
      background:#18121F;
      box-shadow:var(--shadow);
    }
    .image-card img{width:100%;height:100%;object-fit:cover;filter:brightness(.58) saturate(.88)}
    .image-card .overlay-text{
      position:absolute;
      inset:auto 24px 24px 24px;
      padding:20px;
      border-radius:22px;
      background:rgba(14,11,18,.68);
      border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(14px);
    }
    .overlay-text h3{margin:0 0 8px;font-size:24px}
    .overlay-text p{margin:0;color:var(--muted)}
    .matrix{
      display:grid;
      gap:14px;
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      background:rgba(255,255,255,.04);
      padding:18px;
    }
    .matrix-row{
      display:grid;
      grid-template-columns:34px 1fr;
      gap:14px;
      padding:18px;
      border-radius:20px;
      background:rgba(24,18,31,.72);
      border:1px solid rgba(255,255,255,.08);
    }
    .tick{
      width:34px;height:34px;border-radius:50%;
      display:grid;place-items:center;
      color:#fff;
      background:rgba(255,77,109,.20);
      border:1px solid rgba(255,77,109,.28);
      font-weight:850;
    }
    .matrix-row h3{margin:0 0 5px;font-size:18px}
    .matrix-row p{margin:0;color:var(--muted);font-size:15px}
    .proof-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:18px;
    }
    .proof-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      padding:26px;
      background:linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
    }
    .proof-card.large{
      display:grid;
      grid-template-columns:1fr 220px;
      gap:22px;
      align-items:center;
    }
    .proof-card h3{margin:0 0 10px;font-size:23px}
    .proof-card p{margin:0;color:var(--muted)}
    .proof-card img{
      border-radius:22px;
      aspect-ratio:4/3;
      width:100%;
      object-fit:cover;
      filter:brightness(.78) saturate(.9);
    }
    .proof-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .faq-wrap{
      display:grid;
      grid-template-columns:.74fr 1.26fr;
      gap:34px;
      align-items:start;
    }
    .faq-list{display:grid;gap:13px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:22px;
      background:rgba(255,255,255,.045);
      overflow:hidden;
      transition:border-color .2s var(--ease),background .2s var(--ease);
    }
    .faq-item:hover{border-color:rgba(255,184,107,.28);background:rgba(255,255,255,.06)}
    .faq-item.active{border-color:rgba(255,77,109,.45);background:rgba(255,77,109,.06)}
    .faq-question{
      width:100%;
      min-height:66px;
      padding:19px 22px;
      background:transparent;
      color:#fff;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      text-align:left;
      font-weight:780;
      font-size:17px;
    }
    .faq-arrow{
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;
      background:rgba(255,255,255,.07);
      color:var(--accent);
      transition:transform .25s var(--ease),background .25s var(--ease);
      flex:0 0 auto;
    }
    .faq-item.active .faq-arrow{transform:rotate(180deg);background:rgba(255,77,109,.16)}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s var(--ease);
    }
    .faq-answer p{
      margin:0;
      padding:0 22px 22px;
      color:var(--muted);
      font-size:15.5px;
      line-height:1.78;
    }
    .feedback-card{
      border-radius:var(--radius-xl);
      border:1px solid rgba(255,255,255,.12);
      background:
        linear-gradient(120deg,rgba(18,14,24,.72),rgba(18,14,24,.86)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
      padding:34px;
      overflow:hidden;
      position:relative;
      box-shadow:var(--shadow);
    }
    .feedback-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(circle at 80% 18%,rgba(255,77,109,.24),transparent 35%);
      pointer-events:none;
    }
    .feedback-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center}
    .feedback-card h2{margin:0;font-size:clamp(27px,4vw,42px);line-height:1.18}
    .feedback-card p{margin:13px 0 0;color:var(--muted)}
    .feedback-form{
      display:flex;
      gap:10px;
      padding:8px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.13);
      backdrop-filter:blur(12px);
    }
    .feedback-form input{
      min-width:0;
      flex:1;
      height:48px;
      border:0;
      background:transparent;
      color:#fff;
      padding:0 14px;
      outline:0;
    }
    .feedback-form input::placeholder{color:rgba(246,240,244,.55)}
    .feedback-form:focus-within{border-color:rgba(255,77,109,.55);box-shadow:0 0 0 4px rgba(255,77,109,.10)}
    .cta{
      padding:0 0 104px;
    }
    .cta-panel{
      border:1px solid rgba(255,255,255,.14);
      border-radius:34px;
      padding:42px;
      background:
        radial-gradient(circle at 22% 28%,rgba(255,77,109,.25),transparent 34%),
        linear-gradient(135deg,rgba(33,23,40,.95),rgba(14,11,18,.94));
      box-shadow:var(--shadow);
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:30px;
      overflow:hidden;
      position:relative;
    }
    .cta-panel::after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      right:-90px;top:-90px;border-radius:50%;
      background:rgba(255,184,107,.18);
      filter:blur(18px);
    }
    .cta-panel h2{margin:0;font-size:clamp(27px,4vw,42px);line-height:1.2;position:relative;z-index:1}
    .cta-panel p{margin:12px 0 0;color:var(--muted);max-width:700px;position:relative;z-index:1}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
    .site-footer{
      border-top:1px solid var(--line);
      background:rgba(8,6,10,.72);
      padding:48px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1fr auto;
      gap:34px;
      align-items:start;
    }
    .footer-brand p{
      margin:16px 0 0;
      max-width:560px;
      color:var(--muted);
      font-size:14.5px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 18px;
      justify-content:flex-end;
      max-width:520px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      font-weight:650;
      transition:color .2s var(--ease);
    }
    .footer-links a:hover{color:var(--accent)}
    .footer-bottom{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.07);
      display:flex;
      justify-content:space-between;
      gap:18px;
      color:var(--weak);
      font-size:13px;
      flex-wrap:wrap;
    }
    @media (max-width:1060px){
      .container{width:min(var(--container),calc(100% - 48px))}
      .nav-links{position:fixed;top:84px;left:24px;right:24px;display:none;flex-direction:column;align-items:stretch;border-radius:24px;padding:12px;background:rgba(24,18,31,.96);box-shadow:var(--shadow)}
      .nav-links.open{display:flex}
      .nav-links a{padding:13px 16px;border-radius:16px}
      .mobile-toggle{display:inline-block}
      .nav-action .btn{display:none}
      .hero-shell,.value-layout,.updates-wrap,.compare,.faq-wrap,.feedback-inner{grid-template-columns:1fr}
      .hero{min-height:auto}
      .hero-board{min-height:520px}
      .bento{grid-template-columns:1fr 1fr}
      .bento-card.big{grid-column:span 2;grid-row:auto}
      .guide{grid-template-columns:repeat(2,1fr)}
      .update-aside{position:static;grid-template-columns:1fr 1fr}
      .proof-grid,.proof-card.large{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:760px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .section{padding:68px 0}
      .section-tight{padding:56px 0}
      .nav{min-height:68px}
      .logo-mark{width:38px;height:38px;border-radius:14px}
      .logo-text{font-size:16px}
      .hero{padding:50px 0 56px}
      .hero-sub{font-size:16px}
      .hero-actions .btn{width:100%}
      .hero-board{min-height:auto;padding:18px;border-radius:26px}
      .preview-row{grid-template-columns:1fr}
      .preview-card{min-height:190px}
      .bento{grid-template-columns:1fr}
      .bento-card.big{grid-column:auto}
      .section-head{display:block}
      .post-card{grid-template-columns:1fr}
      .post-cover{min-height:190px}
      .guide{grid-template-columns:1fr}
      .step::after{display:none}
      .update-aside{grid-template-columns:1fr}
      .feedback-form{border-radius:24px;flex-direction:column}
      .feedback-form .btn{width:100%}
      .cta-panel{display:block;padding:28px}
      .cta-actions{margin-top:22px}
      .cta-actions .btn{width:100%}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:8px}
    }
    @media (max-width:420px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .hero h1{font-size:34px}
      .bento-card,.side-card,.feature-card,.feedback-card{padding:20px}
      .check-item{grid-template-columns:1fr}
      .faq-question{font-size:16px;padding:17px 18px}
      .faq-answer p{padding:0 18px 18px}
      .mini-tag,.badge{font-size:12px}
    }

/* roulang page: article */
:root{
      --bg:#0E0B12;
      --bg-2:#120E18;
      --panel:#18121F;
      --panel-2:#211728;
      --panel-3:#261B2F;
      --primary:#FF4D6D;
      --primary-2:#FF6B7F;
      --accent:#FFB86B;
      --violet:#8B7CF6;
      --text:#F6F0F4;
      --muted:#B8AEBB;
      --weak:#817789;
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.18);
      --shadow:0 24px 70px rgba(0,0,0,.38);
      --glow:0 18px 54px rgba(255,77,109,.22);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --container:1210px;
      --ease:cubic-bezier(.2,.8,.2,1);
      --font:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 12% 6%,rgba(255,77,109,.16),transparent 34%),
        radial-gradient(circle at 82% 10%,rgba(139,124,246,.16),transparent 30%),
        radial-gradient(circle at 72% 80%,rgba(255,184,107,.10),transparent 34%),
        linear-gradient(180deg,var(--bg-2),var(--bg) 46%,#0A080D);
      line-height:1.75;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.36;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:64px 64px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
      z-index:-2;
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.18;
      background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(/%23n)' opacity='.45'/%3E%3C/svg%3E");
      z-index:-1;
      mix-blend-mode:soft-light;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(255,77,109,.45);color:#fff}
    :focus-visible{outline:3px solid rgba(255,77,109,.58);outline-offset:3px;border-radius:12px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(14,11,18,.68);
      border-bottom:1px solid rgba(255,255,255,.07);
      transition:background .25s var(--ease),box-shadow .25s var(--ease);
    }
    .site-header.is-scrolled{background:rgba(14,11,18,.92);box-shadow:0 16px 38px rgba(0,0,0,.28)}
    .nav{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      font-weight:850;
      letter-spacing:-.02em;
      white-space:nowrap;
    }
    .logo-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:
        radial-gradient(circle at 70% 28%,rgba(255,184,107,.95),transparent 25%),
        linear-gradient(135deg,var(--primary),var(--violet));
      box-shadow:0 12px 32px rgba(255,77,109,.24);
      position:relative;
      flex:0 0 auto;
    }
    .logo-mark::before{
      content:"";
      width:0;height:0;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      border-left:13px solid #fff;
      margin-left:3px;
      filter:drop-shadow(0 2px 7px rgba(0,0,0,.25));
    }
    .logo-text{font-size:18px;color:#fff}
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:7px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.035);
      border-radius:999px;
    }
    .nav-links a{
      color:var(--muted);
      font-size:14px;
      font-weight:650;
      padding:9px 14px;
      border-radius:999px;
      transition:color .2s var(--ease),background .2s var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.08)}
    .nav-action{display:flex;align-items:center;gap:12px}
    .mobile-toggle{
      display:none;
      width:46px;height:46px;
      border-radius:16px;
      background:rgba(255,255,255,.06);
      border:1px solid var(--line);
      color:#fff;
      position:relative;
    }
    .mobile-toggle span,.mobile-toggle::before,.mobile-toggle::after{
      content:"";
      position:absolute;
      left:13px;right:13px;height:2px;
      background:#fff;border-radius:999px;
      transition:transform .25s var(--ease),opacity .25s var(--ease),top .25s var(--ease);
    }
    .mobile-toggle span{top:22px}
    .mobile-toggle::before{top:15px}
    .mobile-toggle::after{top:29px}
    .mobile-toggle.open span{opacity:0}
    .mobile-toggle.open::before{top:22px;transform:rotate(45deg)}
    .mobile-toggle.open::after{top:22px;transform:rotate(-45deg)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:13px 20px;
      border-radius:999px;
      font-weight:760;
      font-size:14.5px;
      line-height:1;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
      user-select:none;
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:var(--glow);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 62px rgba(255,77,109,.33)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.045);
      border:1px solid var(--line-strong);
    }
    .btn-secondary:hover{border-color:rgba(255,77,109,.55);background:rgba(255,255,255,.075);transform:translateY(-2px)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:#FFD0D8;
      font-weight:720;
      transition:color .2s var(--ease),gap .2s var(--ease);
    }
    .text-link:hover{color:var(--accent);gap:10px}
    main{position:relative}
    .section{padding:96px 0}
    .section-tight{padding:72px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:#FFD4DC;
      background:rgba(255,77,109,.13);
      border:1px solid rgba(255,77,109,.25);
      font-size:13px;
      font-weight:760;
      letter-spacing:.02em;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 6px rgba(255,184,107,.12);
    }
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:6px 11px;
      border-radius:999px;
      color:#FFD1DA;
      background:rgba(255,77,109,.13);
      border:1px solid rgba(255,77,109,.22);
      font-size:12.5px;
      font-weight:720;
    }
    .badge-warm{color:#FFE0B8;background:rgba(255,184,107,.12);border-color:rgba(255,184,107,.24)}
    .badge-violet{color:#DAD5FF;background:rgba(139,124,246,.13);border-color:rgba(139,124,246,.26)}
    .article-hero{
      position:relative;
      padding:72px 0 48px;
      overflow:hidden;
    }
    .article-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg,rgba(14,11,18,.3),rgba(14,11,18,.94)),
        linear-gradient(90deg,rgba(14,11,18,.92),rgba(14,11,18,.45)),
        url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
      opacity:.72;
      z-index:-2;
    }
    .article-hero::after{
      content:"";
      position:absolute;
      width:520px;
      height:520px;
      right:-120px;
      top:-160px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,77,109,.24),transparent 68%);
      filter:blur(4px);
      z-index:-1;
    }
    .breadcrumb-wrap{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      color:var(--muted);
      font-size:13px;
      font-weight:650;
      margin-bottom:28px;
    }
    .breadcrumb-wrap a{color:#F3DDE5;transition:color .2s var(--ease)}
    .breadcrumb-wrap a:hover{color:var(--accent)}
    .breadcrumb-sep{color:var(--weak)}
    .article-head-grid{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      align-items:end;
      gap:34px;
    }
    .article-title-area{max-width:850px}
    .article-title-area h1{
      margin:18px 0 18px;
      font-size:clamp(34px,5vw,62px);
      line-height:1.12;
      font-weight:880;
      letter-spacing:-.045em;
      color:#fff;
      text-wrap:balance;
    }
    .article-desc{
      max-width:820px;
      color:var(--muted);
      font-size:17px;
      line-height:1.82;
      margin:0;
    }
    .meta-row{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      margin-top:24px;
      color:var(--muted);
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:6px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
      font-size:13px;
      font-weight:680;
    }
    .meta-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 5px rgba(255,77,109,.12);
    }
    .cover-card{
      position:relative;
      border-radius:var(--radius-xl);
      overflow:hidden;
      min-height:260px;
      border:1px solid var(--line-strong);
      background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
      box-shadow:var(--shadow);
      isolation:isolate;
    }
    .cover-card img{
      position:absolute;
      inset:0;
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.02);
      transition:transform .45s var(--ease);
      z-index:-2;
    }
    .cover-card:hover img{transform:scale(1.07)}
    .cover-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg,rgba(14,11,18,.08),rgba(14,11,18,.78)),
        radial-gradient(circle at 78% 20%,rgba(255,184,107,.32),transparent 34%);
      z-index:-1;
    }
    .cover-content{
      min-height:260px;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      padding:24px;
    }
    .play-chip{
      width:58px;
      height:58px;
      display:grid;
      place-items:center;
      border-radius:22px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(12px);
      margin-bottom:auto;
      box-shadow:0 18px 48px rgba(0,0,0,.24);
    }
    .play-chip::before{
      content:"";
      width:0;height:0;
      border-top:10px solid transparent;
      border-bottom:10px solid transparent;
      border-left:16px solid #fff;
      margin-left:4px;
    }
    .cover-content strong{
      font-size:20px;
      line-height:1.3;
      color:#fff;
      margin-bottom:8px;
    }
    .cover-content span{
      color:#E8DDE5;
      font-size:13.5px;
      line-height:1.6;
    }
    .content-shell{
      padding:68px 0 88px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 320px;
      gap:34px;
      align-items:start;
    }
    .article-card{
      background:linear-gradient(180deg,rgba(33,23,40,.94),rgba(24,18,31,.94));
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .summary-box{
      display:grid;
      grid-template-columns:48px 1fr;
      gap:16px;
      padding:26px 30px;
      border-bottom:1px solid var(--line);
      background:
        radial-gradient(circle at 6% 18%,rgba(255,77,109,.16),transparent 28%),
        rgba(255,255,255,.025);
    }
    .summary-icon{
      width:48px;
      height:48px;
      border-radius:18px;
      background:linear-gradient(135deg,var(--primary),var(--violet));
      box-shadow:0 14px 34px rgba(255,77,109,.22);
      position:relative;
    }
    .summary-icon::before{
      content:"";
      position:absolute;
      width:18px;
      height:14px;
      border-left:3px solid #fff;
      border-bottom:3px solid #fff;
      transform:rotate(-45deg);
      left:15px;
      top:14px;
      border-radius:2px;
    }
    .summary-box strong{
      display:block;
      color:#fff;
      font-size:17px;
      line-height:1.35;
      margin-bottom:6px;
    }
    .summary-box p{
      margin:0;
      color:var(--muted);
      font-size:14.5px;
      line-height:1.75;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .article-body{
      padding:42px 46px 46px;
      color:#ECE4EA;
      font-size:16.5px;
      line-height:1.88;
      overflow-wrap:anywhere;
    }
    .article-body h2{
      color:#fff;
      font-size:30px;
      line-height:1.25;
      font-weight:820;
      letter-spacing:-.025em;
      margin:46px 0 18px;
      padding-top:6px;
    }
    .article-body h2:first-child{margin-top:0}
    .article-body h3{
      color:#fff;
      font-size:22px;
      line-height:1.35;
      font-weight:780;
      margin:34px 0 14px;
    }
    .article-body h4{
      color:#F9EAF0;
      font-size:18px;
      font-weight:760;
      margin:28px 0 10px;
    }
    .article-body p{margin:0 0 20px}
    .article-body a{
      color:#FFD0D8;
      font-weight:720;
      border-bottom:1px solid rgba(255,77,109,.38);
      transition:color .2s var(--ease),border-color .2s var(--ease);
    }
    .article-body a:hover{color:var(--accent);border-color:rgba(255,184,107,.72)}
    .article-body ul,.article-body ol{
      margin:0 0 22px;
      padding-left:1.35em;
    }
    .article-body li{margin:8px 0;padding-left:4px}
    .article-body blockquote{
      margin:28px 0;
      padding:22px 24px;
      border-left:4px solid var(--primary);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      background:rgba(255,255,255,.045);
      color:#F4EAF0;
    }
    .article-body img{
      width:auto;
      max-width:100%;
      height:auto;
      border-radius:18px;
      border:1px solid var(--line);
      margin:28px auto;
      box-shadow:0 18px 46px rgba(0,0,0,.28);
    }
    .article-body figure{margin:30px 0}
    .article-body figcaption{
      color:var(--weak);
      text-align:center;
      font-size:13px;
      margin-top:10px;
    }
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:28px 0;
      color:#F2EAF0;
      overflow:hidden;
      border-radius:16px;
      border:1px solid var(--line);
      display:block;
      overflow-x:auto;
      background:rgba(255,255,255,.025);
    }
    .article-body th,.article-body td{
      min-width:150px;
      padding:14px 16px;
      border-bottom:1px solid var(--line);
      border-right:1px solid var(--line);
      vertical-align:top;
    }
    .article-body th{
      color:#fff;
      background:rgba(255,77,109,.12);
      font-weight:760;
    }
    .article-body tr:last-child td{border-bottom:0}
    .article-body code,.article-body kbd{
      padding:3px 7px;
      border-radius:8px;
      color:#FFE1E8;
      background:rgba(0,0,0,.28);
      border:1px solid rgba(255,255,255,.08);
      font-size:.92em;
    }
    .not-found{
      text-align:center;
      padding:54px 26px;
      color:var(--muted);
    }
    .not-found-icon{
      width:74px;
      height:74px;
      margin:0 auto 18px;
      border-radius:26px;
      background:
        radial-gradient(circle at 70% 25%,rgba(255,184,107,.9),transparent 24%),
        linear-gradient(135deg,rgba(255,77,109,.78),rgba(139,124,246,.78));
      display:grid;
      place-items:center;
      box-shadow:var(--glow);
    }
    .not-found-icon::before{
      content:"!";
      font-size:34px;
      font-weight:900;
      color:#fff;
    }
    .not-found h2{
      margin:0 0 12px;
      color:#fff;
      font-size:30px;
      font-weight:850;
    }
    .not-found p{max-width:560px;margin:0 auto 24px}
    .side-stack{
      position:sticky;
      top:98px;
      display:grid;
      gap:18px;
    }
    .side-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(33,23,40,.86),rgba(24,18,31,.86));
      box-shadow:0 18px 44px rgba(0,0,0,.24);
      padding:22px;
      overflow:hidden;
      position:relative;
    }
    .side-card::before{
      content:"";
      position:absolute;
      width:150px;
      height:150px;
      right:-80px;
      top:-80px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,77,109,.18),transparent 70%);
      pointer-events:none;
    }
    .side-card h2{
      margin:0 0 15px;
      color:#fff;
      font-size:19px;
      line-height:1.3;
      font-weight:820;
    }
    .point-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .point-list li{
      display:grid;
      grid-template-columns:26px 1fr;
      gap:10px;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }
    .point-list li::before{
      content:"";
      width:26px;
      height:26px;
      border-radius:10px;
      background:rgba(255,77,109,.13);
      border:1px solid rgba(255,77,109,.24);
      position:relative;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.02);
    }
    .quick-nav{
      display:grid;
      gap:9px;
    }
    .quick-nav a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      min-height:42px;
      padding:10px 12px;
      border-radius:14px;
      color:var(--muted);
      background:rgba(255,255,255,.035);
      border:1px solid transparent;
      font-size:14px;
      font-weight:680;
      transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
    }
    .quick-nav a::after{content:"→";color:var(--weak);transition:transform .2s var(--ease),color .2s var(--ease)}
    .quick-nav a:hover{
      color:#fff;
      border-color:rgba(255,77,109,.35);
      background:rgba(255,255,255,.065);
      transform:translateX(2px);
    }
    .quick-nav a:hover::after{color:var(--accent);transform:translateX(3px)}
    .mini-cover{
      margin-top:16px;
      border-radius:18px;
      overflow:hidden;
      border:1px solid var(--line);
      position:relative;
      aspect-ratio:16/10;
      background:linear-gradient(135deg,rgba(255,77,109,.28),rgba(139,124,246,.22));
    }
    .mini-cover img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:transform .35s var(--ease)}
    .side-card:hover .mini-cover img{transform:scale(1.05)}
    .info-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
      margin-top:34px;
    }
    .info-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(145deg,rgba(33,23,40,.84),rgba(24,18,31,.84));
      padding:24px;
      min-height:176px;
      transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
    }
    .info-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,77,109,.35);
      box-shadow:0 18px 46px rgba(0,0,0,.28);
    }
    .info-card .num{
      width:40px;
      height:40px;
      display:grid;
      place-items:center;
      border-radius:15px;
      color:#fff;
      font-weight:850;
      background:linear-gradient(135deg,var(--primary),var(--violet));
      margin-bottom:16px;
    }
    .info-card h2{
      font-size:20px;
      line-height:1.35;
      margin:0 0 10px;
      font-weight:820;
      color:#fff;
    }
    .info-card p{
      margin:0;
      color:var(--muted);
      font-size:14.5px;
      line-height:1.72;
    }
    .section-heading{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:28px;
    }
    .section-heading h2{
      margin:12px 0 0;
      color:#fff;
      font-size:clamp(28px,4vw,42px);
      line-height:1.2;
      font-weight:860;
      letter-spacing:-.035em;
    }
    .section-heading p{
      max-width:610px;
      margin:0;
      color:var(--muted);
      font-size:15.5px;
      line-height:1.75;
    }
    .recommend-card{
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:
        radial-gradient(circle at 88% 16%,rgba(255,184,107,.13),transparent 28%),
        linear-gradient(145deg,rgba(33,23,40,.86),rgba(24,18,31,.9));
      box-shadow:var(--shadow);
      padding:30px;
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:24px;
      align-items:center;
    }
    .recommend-card h2{
      margin:0 0 12px;
      font-size:28px;
      line-height:1.25;
      color:#fff;
      font-weight:850;
    }
    .recommend-card p{
      margin:0 0 20px;
      color:var(--muted);
      line-height:1.75;
    }
    .recommend-cover{
      position:relative;
      overflow:hidden;
      border-radius:22px;
      border:1px solid var(--line);
      aspect-ratio:16/9;
      min-height:190px;
      background:rgba(255,255,255,.04);
    }
    .recommend-cover img{width:100%;height:100%;object-fit:cover;filter:saturate(1.05) contrast(1.02)}
    .recommend-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent,rgba(14,11,18,.58));
    }
    .faq-grid{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:34px;
      align-items:start;
    }
    .faq-intro{
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:
        linear-gradient(180deg,rgba(255,77,109,.08),rgba(255,255,255,.025)),
        url("/assets/images/coverpic/cover-3.webp") center/cover no-repeat;
      overflow:hidden;
      min-height:390px;
      position:relative;
      padding:30px;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
    }
    .faq-intro::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(14,11,18,.28),rgba(14,11,18,.9));
    }
    .faq-intro > *{position:relative}
    .faq-intro h2{
      margin:12px 0 12px;
      color:#fff;
      font-size:34px;
      line-height:1.18;
      font-weight:860;
    }
    .faq-intro p{margin:0;color:var(--muted)}
    .accordion-list{display:grid;gap:14px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      background:rgba(33,23,40,.72);
      overflow:hidden;
      transition:border-color .22s var(--ease),background .22s var(--ease);
    }
    .faq-item.active{
      border-color:rgba(255,77,109,.45);
      background:rgba(33,23,40,.92);
    }
    .faq-question{
      width:100%;
      min-height:60px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 20px;
      color:#fff;
      background:transparent;
      text-align:left;
      font-weight:780;
      font-size:16px;
    }
    .faq-question:hover{color:#FFE0E6}
    .faq-arrow{
      width:28px;
      height:28px;
      border-radius:10px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:rgba(255,255,255,.06);
      color:var(--accent);
      transition:transform .22s var(--ease),background .22s var(--ease);
    }
    .faq-item.active .faq-arrow{transform:rotate(45deg);background:rgba(255,77,109,.14)}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .26s var(--ease);
    }
    .faq-answer p{
      margin:0;
      padding:0 20px 20px;
      color:var(--muted);
      line-height:1.75;
      font-size:14.8px;
    }
    .cta-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      border:1px solid var(--line-strong);
      background:
        linear-gradient(90deg,rgba(14,11,18,.95),rgba(14,11,18,.72)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
      box-shadow:var(--shadow);
      padding:46px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:26px;
      align-items:center;
    }
    .cta-card::before{
      content:"";
      position:absolute;
      inset:auto -80px -120px auto;
      width:360px;
      height:360px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,77,109,.24),transparent 70%);
      pointer-events:none;
    }
    .cta-card > *{position:relative}
    .cta-card h2{
      margin:0 0 12px;
      color:#fff;
      font-size:clamp(28px,4vw,42px);
      line-height:1.18;
      font-weight:860;
      letter-spacing:-.035em;
    }
    .cta-card p{
      max-width:720px;
      color:var(--muted);
      margin:0;
    }
    .cta-actions{
      display:flex;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .site-footer{
      border-top:1px solid var(--line);
      background:rgba(8,6,11,.72);
      padding:54px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1fr auto;
      gap:34px;
      align-items:start;
      padding-bottom:30px;
      border-bottom:1px solid var(--line);
    }
    .footer-brand p{
      max-width:560px;
      margin:16px 0 0;
      color:var(--muted);
      font-size:14.5px;
      line-height:1.75;
    }
    .footer-links{
      display:grid;
      grid-template-columns:repeat(2,auto);
      gap:10px 24px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      font-weight:650;
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-links a:hover{color:var(--accent);transform:translateX(2px)}
    .footer-bottom{
      padding-top:22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:var(--weak);
      font-size:13px;
    }
    @media (max-width: 1080px){
      .article-head-grid,.article-layout,.faq-grid{grid-template-columns:1fr}
      .cover-card{max-width:520px}
      .side-stack{position:static;grid-template-columns:repeat(2,1fr)}
      .info-grid{grid-template-columns:repeat(2,1fr)}
      .recommend-card{grid-template-columns:1fr}
      .nav{gap:14px}
      .nav-links a{padding:9px 11px}
    }
    @media (max-width: 860px){
      .container{width:min(100% - 40px,var(--container))}
      .nav{min-height:70px}
      .nav-links{
        position:absolute;
        top:76px;
        left:20px;
        right:20px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:22px;
        padding:10px;
        background:rgba(24,18,31,.96);
        box-shadow:var(--shadow);
        backdrop-filter:blur(18px);
      }
      .nav-links.show{display:flex}
      .nav-links a{
        min-height:44px;
        display:flex;
        align-items:center;
        padding:12px 14px;
      }
      .mobile-toggle{display:block}
      .nav-action .btn{display:none}
      .article-hero{padding:46px 0 34px}
      .article-desc{font-size:16px}
      .article-body{padding:30px 26px;font-size:16px}
      .summary-box{padding:22px;grid-template-columns:42px 1fr}
      .summary-icon{width:42px;height:42px;border-radius:15px}
      .side-stack{grid-template-columns:1fr}
      .section{padding:70px 0}
      .section-tight{padding:56px 0}
      .info-grid{grid-template-columns:1fr}
      .section-heading{display:block}
      .section-heading p{margin-top:14px}
      .cta-card{grid-template-columns:1fr;padding:32px}
      .cta-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-bottom{flex-direction:column;align-items:flex-start}
    }
    @media (max-width: 520px){
      .container{width:min(100% - 32px,var(--container))}
      .logo-text{font-size:16px}
      .logo-mark{width:38px;height:38px;border-radius:14px}
      .article-title-area h1{font-size:32px}
      .breadcrumb-wrap{font-size:12.5px}
      .meta-row{gap:8px}
      .meta-pill{font-size:12px}
      .cover-card,.cover-content{min-height:220px}
      .cover-content{padding:20px}
      .article-body{padding:24px 20px;font-size:15.8px}
      .article-body h2{font-size:25px;margin-top:36px}
      .article-body h3{font-size:20px}
      .summary-box{grid-template-columns:1fr}
      .recommend-card{padding:22px}
      .faq-question{font-size:15px;padding:16px}
      .faq-answer p{padding:0 16px 18px}
      .cta-card{padding:26px 20px}
      .btn{width:100%;min-height:46px}
      .cta-actions{width:100%}
      .footer-links{grid-template-columns:1fr}
    }

/* 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}