/* roulang page: index */
:root{
      --bg:#0d0b12;
      --bg-2:#14101c;
      --bg-3:#1b1524;
      --card:rgba(255,255,255,.06);
      --card-2:rgba(255,255,255,.08);
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.18);
      --text:#f4efe9;
      --muted:#b6adba;
      --muted-2:#8f8796;
      --accent:#ff4d8d;
      --accent-2:#ffb35a;
      --accent-3:#52f0d9;
      --shadow:0 20px 60px rgba(0,0,0,.36);
      --shadow-soft:0 12px 34px rgba(0,0,0,.24);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1200px;
      --gap:24px;
      --transition:.28s ease;
    }

    *,*::before,*::after{box-sizing:border-box}
    html{
      scroll-behavior:smooth;
      background:var(--bg);
    }
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 10%, rgba(255,77,141,.18), transparent 24%),
        radial-gradient(circle at 88% 14%, rgba(82,240,217,.10), transparent 22%),
        radial-gradient(circle at 78% 82%, rgba(255,179,90,.10), transparent 20%),
        linear-gradient(180deg, #0b0910 0%, #0d0b12 38%, #0b0910 100%);
      min-height:100vh;
      line-height:1.7;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
      background-size:36px 36px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.22), rgba(0,0,0,.04), rgba(0,0,0,.18));
      opacity:.25;
      z-index:-1;
    }
    ::selection{
      background:rgba(255,77,141,.35);
      color:#fff;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), opacity var(--transition), transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }
    a:hover{color:#fff}
    img{max-width:100%;display:block}
    button,input,select,textarea{
      font:inherit;
    }
    :focus-visible{
      outline:2px solid rgba(82,240,217,.95);
      outline-offset:3px;
    }

    .container{
      max-width:var(--container) !important;
    }

    .site-header{
      position:fixed;
      top:0;
      left:0;
      right:0;
      z-index:1030;
      padding:14px 0;
      background:linear-gradient(180deg, rgba(10,8,14,.34), rgba(10,8,14,.10));
      transition:background var(--transition), box-shadow var(--transition), border-color var(--transition), backdrop-filter var(--transition);
    }
    .site-header.is-scrolled{
      background:rgba(11,9,16,.84);
      backdrop-filter: blur(18px);
      box-shadow:0 12px 40px rgba(0,0,0,.30);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .navbar{
      padding:0;
    }
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      letter-spacing:.2px;
      color:var(--text) !important;
      line-height:1;
    }
    .brand-mark{
      width:36px;
      height:36px;
      border-radius:12px;
      background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,.36), transparent 32%),
        linear-gradient(145deg, rgba(255,77,141,.92), rgba(82,240,217,.7));
      box-shadow:0 12px 28px rgba(255,77,141,.15);
      border:1px solid rgba(255,255,255,.18);
      display:grid;
      place-items:center;
      color:#0d0b12;
      font-size:15px;
      font-weight:900;
    }
    .navbar-nav{
      gap:10px;
    }
    .nav-link{
      color:var(--muted) !important;
      font-weight:600;
      padding:.7rem 1rem !important;
      border-radius:999px;
      border:1px solid transparent;
      background:transparent;
    }
    .nav-link:hover,
    .nav-link:focus-visible,
    .nav-link.active{
      color:#fff !important;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.10);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
    }
    .navbar-toggler{
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.05);
      color:#fff;
      border-radius:14px;
      padding:.7rem .9rem;
      box-shadow:none !important;
    }
    .navbar-toggler:focus{
      box-shadow:0 0 0 .2rem rgba(82,240,217,.16) !important;
    }
    .navbar-toggler-icon{
      width:1.2em;
      height:1.2em;
      background-image:none;
      position:relative;
    }
    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after,
    .navbar-toggler-icon span{
      content:"";
      position:absolute;
      left:0;
      right:0;
      height:2px;
      border-radius:999px;
      background:#fff;
    }
    .navbar-toggler-icon::before{top:2px}
    .navbar-toggler-icon span{top:8px}
    .navbar-toggler-icon::after{bottom:2px}
    .nav-cta{
      display:inline-flex;
      align-items:center;
      gap:8px;
      border-radius:999px;
      padding:.86rem 1.15rem;
      border:1px solid rgba(255,255,255,.14);
      background:linear-gradient(135deg, rgba(255,77,141,.18), rgba(255,179,90,.10));
      color:#fff;
      box-shadow:var(--shadow-soft);
    }
    .nav-cta:hover{
      transform:translateY(-1px);
      border-color:rgba(255,255,255,.24);
      box-shadow:0 18px 34px rgba(0,0,0,.28);
    }

    .site-main{
      padding-top:86px;
    }

    .hero{
      position:relative;
      overflow:hidden;
      padding:88px 0 38px;
      min-height:100vh;
      display:flex;
      align-items:center;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:-1px;
      background:
        radial-gradient(circle at 18% 22%, rgba(255,77,141,.24), transparent 22%),
        radial-gradient(circle at 78% 20%, rgba(82,240,217,.16), transparent 18%),
        radial-gradient(circle at 74% 78%, rgba(255,179,90,.12), transparent 16%);
      pointer-events:none;
      opacity:.95;
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(135deg, rgba(255,255,255,.02), transparent 34%),
        linear-gradient(180deg, transparent 0, rgba(0,0,0,.12) 100%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:34px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:.48rem .86rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:#f4efe9;
      font-size:.9rem;
      letter-spacing:.3px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
    }
    .eyebrow .dot{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent-3);
      box-shadow:0 0 0 6px rgba(82,240,217,.12);
    }
    .hero h1{
      margin:.95rem 0 1rem;
      font-size:clamp(2.55rem, 5vw, 5.2rem);
      line-height:1.02;
      letter-spacing:-.04em;
      font-weight:900;
      text-wrap:balance;
    }
    .hero h1 .accent{
      background:linear-gradient(90deg, #fff, #ffb35a 32%, #ff4d8d 62%, #52f0d9 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-lead{
      max-width:640px;
      font-size:1.08rem;
      color:var(--muted);
      margin:0 0 1.35rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
      margin:1.4rem 0 1.25rem;
    }
    .btn{
      border-radius:999px;
      padding:.92rem 1.2rem;
      font-weight:700;
      border:1px solid transparent;
      transition:transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition), opacity var(--transition);
      box-shadow:none !important;
    }
    .btn:hover{
      transform:translateY(-2px);
    }
    .btn:active{
      transform:translateY(0);
    }
    .btn-accent{
      color:#0d0b12;
      background:linear-gradient(135deg, #f7f1ea, #ffb35a 40%, #ff4d8d 100%);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 14px 36px rgba(255,77,141,.18);
    }
    .btn-accent:hover{
      color:#0d0b12;
      box-shadow:0 18px 44px rgba(255,77,141,.26);
    }
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.12);
    }
    .btn-ghost:hover{
      color:#fff;
      background:rgba(255,255,255,.09);
      border-color:rgba(255,255,255,.20);
    }
    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:1rem;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:.56rem .84rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:var(--muted);
      font-size:.95rem;
    }
    .pill strong{color:#fff}
    .hero-card-stage{
      position:relative;
      min-height:560px;
    }
    .stage-panel{
      position:absolute;
      inset:0;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 20% 18%, rgba(255,77,141,.12), transparent 22%),
        radial-gradient(circle at 88% 20%, rgba(82,240,217,.10), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .stage-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
      background-size:26px 26px;
      opacity:.14;
      pointer-events:none;
    }
    .poster-card{
      position:absolute;
      left:22px;
      top:22px;
      right:22px;
      bottom:22px;
      border-radius:24px;
      background:
        radial-gradient(circle at 30% 25%, rgba(255,179,90,.40), transparent 18%),
        radial-gradient(circle at 70% 20%, rgba(255,77,141,.25), transparent 20%),
        linear-gradient(180deg, rgba(8,6,12,.62), rgba(18,15,25,.92));
      border:1px solid rgba(255,255,255,.12);
      overflow:hidden;
    }
    .poster-card::before{
      content:"";
      position:absolute;
      inset:-1px;
      background:
        radial-gradient(circle at 12% 12%, rgba(255,255,255,.10), transparent 18%),
        radial-gradient(circle at 88% 86%, rgba(82,240,217,.12), transparent 16%);
      pointer-events:none;
    }
    .poster-top{
      position:absolute;
      left:20px;
      right:20px;
      top:18px;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      z-index:2;
    }
    .live-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:.42rem .74rem;
      border-radius:999px;
      background:rgba(0,0,0,.30);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:.86rem;
      backdrop-filter:blur(12px);
    }
    .live-badge .live-dot{
      width:10px;
      height:10px;
      border-radius:50%;
      background:#ff4d8d;
      box-shadow:0 0 0 6px rgba(255,77,141,.12);
    }
    .mini-chip{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:.4rem .68rem;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      font-size:.8rem;
      white-space:nowrap;
    }
    .poster-center{
      position:absolute;
      left:22px;
      right:22px;
      top:84px;
      bottom:22px;
      display:grid;
      grid-template-rows:auto 1fr auto;
      gap:18px;
      z-index:2;
    }
    .poster-title{
      max-width:420px;
      font-size:2.05rem;
      line-height:1.05;
      letter-spacing:-.03em;
      font-weight:900;
    }
    .poster-title span{
      color:#fff;
    }
    .poster-sub{
      max-width:430px;
      color:#d6cfd8;
      font-size:.98rem;
    }
    .timer-card{
      align-self:start;
      margin-left:auto;
      width:min(310px, 100%);
      border-radius:20px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(14px);
      padding:16px;
      box-shadow:var(--shadow-soft);
    }
    .timer-label{
      color:#d5ccda;
      font-size:.88rem;
      margin-bottom:10px;
    }
    .timer{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:10px;
    }
    .timer-box{
      border-radius:16px;
      background:rgba(0,0,0,.18);
      border:1px solid rgba(255,255,255,.10);
      text-align:center;
      padding:10px 8px;
    }
    .timer-box strong{
      display:block;
      font-size:1.18rem;
      line-height:1.05;
      color:#fff;
    }
    .timer-box span{
      display:block;
      font-size:.76rem;
      color:#bdb4c4;
      margin-top:4px;
    }
    .subscribe-card{
      display:grid;
      gap:12px;
      grid-template-columns:1.1fr auto;
      align-items:center;
      padding:16px;
      border-radius:20px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.10);
      backdrop-filter:blur(12px);
      box-shadow:var(--shadow-soft);
    }
    .subscribe-copy strong{
      display:block;
      font-size:1rem;
      margin-bottom:3px;
    }
    .subscribe-copy span{
      color:var(--muted);
      font-size:.9rem;
    }
    .input-group-lite{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:stretch;
    }
    .form-control,
    .form-select{
      min-height:48px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      padding:.86rem 1rem;
      box-shadow:none !important;
    }
    .form-control::placeholder{color:#9f96a6}
    .form-control:focus,
    .form-select:focus{
      background:rgba(255,255,255,.07);
      border-color:rgba(82,240,217,.56);
      color:#fff;
    }
    .subscribe-btn{
      min-width:132px;
    }
    .subscribe-hint{
      font-size:.86rem;
      color:var(--muted-2);
      min-height:1.2em;
    }
    .floating-stat{
      position:absolute;
      left:-14px;
      bottom:48px;
      width:220px;
      border-radius:18px;
      background:rgba(14,11,18,.72);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(14px);
      padding:14px;
      box-shadow:var(--shadow-soft);
    }
    .floating-stat strong{
      display:block;
      font-size:1.55rem;
      line-height:1;
      margin-bottom:4px;
    }
    .floating-stat span{
      color:var(--muted);
      font-size:.85rem;
    }
    .floating-tag{
      position:absolute;
      right:-12px;
      bottom:18px;
      width:178px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(10px);
      padding:12px 14px;
      box-shadow:var(--shadow-soft);
    }
    .floating-tag .k{
      display:block;
      color:#fff;
      font-size:.92rem;
      margin-bottom:2px;
    }
    .floating-tag .v{
      color:var(--muted);
      font-size:.83rem;
    }

    .section{
      position:relative;
      padding:80px 0;
    }
    .section.tight-top{padding-top:48px}
    .section-title{
      display:flex;
      flex-direction:column;
      gap:12px;
      margin-bottom:28px;
    }
    .section-title h2{
      font-size:clamp(1.8rem, 3vw, 2.55rem);
      line-height:1.08;
      margin:0;
      font-weight:850;
      letter-spacing:-.03em;
    }
    .section-title p{
      margin:0;
      max-width:780px;
      color:var(--muted);
      font-size:1.02rem;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      font-size:.86rem;
      letter-spacing:.18em;
      text-transform:uppercase;
      opacity:.88;
    }
    .section-kicker::before{
      content:"";
      width:28px;
      height:1px;
      background:linear-gradient(90deg, var(--accent), transparent);
    }

    .glass-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }
    .glass-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 18px 42px rgba(0,0,0,.28);
    }
    .glass-card .inner{
      padding:24px;
    }
    .card-mini{
      border-radius:22px;
      background:
        radial-gradient(circle at 18% 15%, rgba(255,77,141,.10), transparent 24%),
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      height:100%;
    }
    .card-mini .inner{padding:22px}
    .icon-bubble{
      width:46px;
      height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(255,77,141,.18), rgba(255,179,90,.12));
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      font-weight:800;
      margin-bottom:16px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
    }
    .mini-title{
      font-size:1.06rem;
      margin:0 0 8px;
      font-weight:800;
      color:#fff;
    }
    .mini-text{
      color:var(--muted);
      margin:0;
      font-size:.96rem;
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:var(--gap);
    }
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:var(--gap);
    }
    .grid-4{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:var(--gap);
    }

    .pain-card{
      height:100%;
      padding:22px;
      border-radius:22px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      position:relative;
      overflow:hidden;
    }
    .pain-card::after{
      content:"";
      position:absolute;
      inset:auto -20% -35% auto;
      width:120px;
      height:120px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,77,141,.16), transparent 70%);
      pointer-events:none;
    }
    .pain-index{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      border-radius:12px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      font-weight:800;
      margin-bottom:14px;
    }
    .pain-card h3{
      font-size:1.03rem;
      margin:0 0 8px;
      font-weight:800;
    }
    .pain-card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }

    .solution-wrap{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:var(--gap);
      align-items:stretch;
    }
    .solution-main{
      padding:28px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 18% 20%, rgba(82,240,217,.10), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      position:relative;
      overflow:hidden;
      min-height:330px;
    }
    .solution-main::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(145deg, transparent 20%, rgba(255,255,255,.04) 21%, transparent 24%);
      opacity:.8;
    }
    .solution-main > *{position:relative; z-index:1;}
    .solution-steps{
      display:grid;
      gap:12px;
      margin-top:18px;
    }
    .step-item{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:14px 16px;
      border-radius:18px;
      background:rgba(0,0,0,.16);
      border:1px solid rgba(255,255,255,.10);
    }
    .step-num{
      width:32px;
      height:32px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(255,77,141,.18), rgba(82,240,217,.10));
      color:#fff;
      font-weight:800;
      flex:none;
    }
    .step-item strong{
      display:block;
      margin-bottom:4px;
      color:#fff;
    }
    .step-item span{
      color:var(--muted);
      font-size:.94rem;
    }
    .solution-side{
      display:grid;
      gap:var(--gap);
    }
    .solution-side .glass-card{
      min-height:148px;
    }
    .solution-side .inner{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:.38rem .72rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      font-size:.84rem;
    }
    .tag.soft{
      color:var(--muted);
    }

    .stats-bar{
      display:grid;
      gap:var(--gap);
    }
    .metric-card{
      padding:22px;
      border-radius:22px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      height:100%;
    }
    .metric-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:12px;
      margin-bottom:14px;
    }
    .metric-head strong{
      font-size:1.9rem;
      line-height:1;
      letter-spacing:-.03em;
    }
    .metric-head span{
      color:var(--muted);
      font-size:.92rem;
    }
    .metric-bar{
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      overflow:hidden;
    }
    .metric-bar i{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg, var(--accent-3), var(--accent), var(--accent-2));
      box-shadow:0 0 22px rgba(255,77,141,.25);
    }
    .metric-note{
      margin-top:10px;
      color:var(--muted);
      font-size:.94rem;
    }
    .meter-grid{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:var(--gap);
      margin-top:22px;
    }

    .rank-wrap{
      display:grid;
      grid-template-columns:1fr .8fr;
      gap:var(--gap);
      align-items:start;
    }
    .rank-list{
      padding:18px;
      border-radius:var(--radius-xl);
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
    }
    .rank-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:14px;
      align-items:center;
      padding:14px 10px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .rank-item:last-child{border-bottom:none}
    .rank-num{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.10);
      font-weight:800;
      color:#fff;
    }
    .rank-body strong{
      display:block;
      font-size:1rem;
      margin-bottom:4px;
    }
    .rank-body span{
      display:block;
      color:var(--muted);
      font-size:.92rem;
    }
    .rank-meta{
      text-align:right;
      color:#fff;
      font-size:.88rem;
      display:grid;
      gap:4px;
    }
    .rank-meta em{
      font-style:normal;
      color:var(--muted);
    }
    .rank-side{
      display:grid;
      gap:var(--gap);
    }
    .side-action{
      padding:24px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 75% 20%, rgba(255,179,90,.14), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
    }
    .side-action h3{
      margin:0 0 10px;
      font-size:1.15rem;
      font-weight:850;
    }
    .side-action p{
      margin:0;
      color:var(--muted);
    }
    .side-quick{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:12px;
    }
    .quick-box{
      padding:16px;
      border-radius:18px;
      background:rgba(0,0,0,.16);
      border:1px solid rgba(255,255,255,.10);
    }
    .quick-box strong{
      display:block;
      color:#fff;
      margin-bottom:4px;
    }
    .quick-box span{
      color:var(--muted);
      font-size:.92rem;
    }

    .quotes{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:var(--gap);
    }
    .quote-card{
      padding:22px;
      border-radius:22px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      position:relative;
    }
    .quote-card::before{
      content:"“";
      position:absolute;
      top:10px;
      right:16px;
      font-size:4rem;
      line-height:1;
      color:rgba(255,255,255,.08);
      font-weight:900;
    }
    .quote{
      margin:0 0 16px;
      color:#efe8f2;
      font-size:1rem;
    }
    .quote-user{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .avatar{
      width:42px;
      height:42px;
      border-radius:16px;
      background:linear-gradient(135deg, rgba(255,77,141,.38), rgba(82,240,217,.20));
      border:1px solid rgba(255,255,255,.12);
      flex:none;
    }
    .quote-user strong{
      display:block;
      font-size:.95rem;
      line-height:1.2;
    }
    .quote-user span{
      display:block;
      color:var(--muted);
      font-size:.84rem;
      margin-top:2px;
    }

    .latest-wrap{
      display:grid;
      grid-template-columns:1.08fr .72fr;
      gap:var(--gap);
      align-items:start;
    }
    .post-list{
      display:grid;
      gap:16px;
    }
    .post-card{
      display:grid;
      grid-template-columns:12px 1fr;
      gap:16px;
      padding:18px;
      border-radius:22px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .post-card:hover{
      transform:translateY(-3px);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 18px 40px rgba(0,0,0,.24);
    }
    .post-strip{
      border-radius:999px;
      background:linear-gradient(180deg, var(--accent-3), var(--accent), var(--accent-2));
      box-shadow:0 0 20px rgba(255,77,141,.18);
    }
    .post-card h3{
      margin:0 0 8px;
      font-size:1.05rem;
      line-height:1.35;
      font-weight:850;
    }
    .post-card h3 a{
      color:#fff;
    }
    .post-card h3 a:hover{
      color:#fff;
      opacity:.92;
    }
    .post-excerpt{
      margin:0 0 12px;
      color:var(--muted);
      font-size:.95rem;
    }
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted-2);
      font-size:.86rem;
      align-items:center;
    }
    .meta-badge{
      display:inline-flex;
      align-items:center;
      padding:.3rem .62rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      font-size:.8rem;
    }
    .latest-side{
      display:grid;
      gap:var(--gap);
    }
    .notice-card{
      padding:24px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 80% 12%, rgba(82,240,217,.10), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
    }
    .notice-card h3{
      margin:0 0 10px;
      font-size:1.12rem;
      font-weight:850;
    }
    .notice-card p{
      margin:0 0 14px;
      color:var(--muted);
    }
    .bullet-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .bullet-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#e8e0ea;
      font-size:.95rem;
    }
    .bullet-list li::before{
      content:"";
      width:8px;
      height:8px;
      margin-top:.5rem;
      border-radius:50%;
      background:var(--accent-3);
      box-shadow:0 0 0 6px rgba(82,240,217,.10);
      flex:none;
    }
    .latest-empty{
      padding:28px;
      border-radius:24px;
      background:rgba(255,255,255,.05);
      border:1px dashed rgba(255,255,255,.16);
      color:var(--muted);
      text-align:center;
    }
    .latest-empty p{
      margin:0 0 14px;
    }

    .accordion{
      --bs-accordion-bg: transparent;
      --bs-accordion-border-color: transparent;
      --bs-accordion-btn-color: var(--text);
      --bs-accordion-btn-bg: rgba(255,255,255,.05);
      --bs-accordion-active-color: #fff;
      --bs-accordion-active-bg: rgba(255,255,255,.08);
      --bs-accordion-btn-focus-box-shadow: 0 0 0 .2rem rgba(82,240,217,.12);
      --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ffffff'%3e%3cpath fill-rule='evenodd' d='M1.646 5.646a.5.5 0 0 1 .708 0L8 11.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
      --bs-accordion-btn-active-icon: var(--bs-accordion-btn-icon);
    }
    .accordion-item{
      border:1px solid rgba(255,255,255,.10);
      border-radius:18px !important;
      overflow:hidden;
      background:rgba(255,255,255,.04);
      box-shadow:var(--shadow-soft);
      margin-bottom:14px;
    }
    .accordion-button{
      border:0;
      padding:1.05rem 1.15rem;
      color:var(--text);
      font-weight:700;
      background:rgba(255,255,255,.04);
    }
    .accordion-button:not(.collapsed){
      color:#fff;
      box-shadow:none;
      background:rgba(255,255,255,.07);
    }
    .accordion-button::after{
      filter:brightness(1.3);
    }
    .accordion-body{
      color:var(--muted);
      padding:1rem 1.15rem 1.15rem;
      background:rgba(255,255,255,.03);
      border-top:1px solid rgba(255,255,255,.06);
    }

    .cta-banner{
      overflow:hidden;
      border-radius:30px;
      background:
        radial-gradient(circle at 15% 20%, rgba(255,77,141,.22), transparent 20%),
        radial-gradient(circle at 82% 24%, rgba(82,240,217,.14), transparent 18%),
        linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      padding:30px;
      position:relative;
    }
    .cta-banner::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(120deg, transparent 0%, rgba(255,255,255,.03) 32%, transparent 64%);
      pointer-events:none;
    }
    .cta-banner .row{
      position:relative;
      z-index:1;
    }
    .cta-banner h2{
      margin:0 0 10px;
      font-size:clamp(1.8rem, 3vw, 2.6rem);
      font-weight:900;
      line-height:1.08;
    }
    .cta-banner p{
      margin:0;
      color:var(--muted);
    }

    .site-footer{
      padding:34px 0 42px;
      border-top:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(8,6,12,.0), rgba(8,6,12,.38));
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:var(--gap);
      align-items:start;
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      max-width:520px;
    }
    .footer-links{
      display:grid;
      gap:10px;
      justify-items:start;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:600;
    }
    .footer-links a:hover{
      color:#fff;
    }
    .footer-meta{
      color:var(--muted-2);
      font-size:.92rem;
    }
    .footer-note{
      margin-top:22px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted-2);
      font-size:.9rem;
      display:flex;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }

    .section-anchor{
      scroll-margin-top:110px;
    }

    @media (max-width: 1199.98px){
      .hero-grid,
      .solution-wrap,
      .rank-wrap,
      .latest-wrap,
      .footer-grid{
        grid-template-columns:1fr;
      }
      .hero-card-stage{
        min-height:520px;
      }
      .quotes{
        grid-template-columns:1fr 1fr;
      }
      .grid-4,
      .meter-grid{
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
    }
    @media (max-width: 991.98px){
      .site-main{padding-top:80px}
      .hero{
        min-height:auto;
        padding:72px 0 30px;
      }
      .hero h1{
        font-size:clamp(2.2rem, 8vw, 4rem);
      }
      .poster-title{
        font-size:1.82rem;
      }
      .hero-card-stage{
        min-height:500px;
      }
      .floating-stat{
        left:12px;
        bottom:22px;
      }
      .floating-tag{
        right:12px;
      }
      .grid-3{
        grid-template-columns:1fr 1fr;
      }
    }
    @media (max-width: 767.98px){
      .site-header{
        padding:10px 0;
      }
      .navbar-collapse{
        margin-top:14px;
        padding:14px;
        border-radius:22px;
        background:rgba(16,13,22,.92);
        border:1px solid rgba(255,255,255,.10);
        box-shadow:var(--shadow-soft);
      }
      .hero{
        padding:60px 0 24px;
      }
      .hero-actions,
      .subscribe-card{
        grid-template-columns:1fr;
      }
      .subscribe-card{
        display:flex;
        flex-direction:column;
        align-items:stretch;
      }
      .subscribe-btn{
        width:100%;
      }
      .hero-card-stage{
        min-height:470px;
      }
      .poster-center{
        top:76px;
      }
      .poster-title{
        max-width:none;
      }
      .timer{
        grid-template-columns:repeat(4,minmax(0,1fr));
      }
      .grid-2,
      .grid-3,
      .grid-4,
      .quotes,
      .meter-grid,
      .side-quick{
        grid-template-columns:1fr;
      }
      .footer-note{
        flex-direction:column;
      }
    }
    @media (max-width: 575.98px){
      .container{
        padding-left:16px !important;
        padding-right:16px !important;
      }
      .hero{
        padding-top:52px;
      }
      .hero-grid{
        gap:22px;
      }
      .hero-actions{
        flex-direction:column;
        align-items:stretch;
      }
      .hero-actions .btn{
        width:100%;
      }
      .hero-card-stage{
        min-height:500px;
      }
      .poster-top{
        flex-direction:column;
        align-items:flex-start;
      }
      .timer{
        gap:8px;
      }
      .timer-box{
        padding:9px 6px;
      }
      .floating-stat,
      .floating-tag{
        position:relative;
        left:auto;
        right:auto;
        bottom:auto;
        width:auto;
        margin-top:12px;
      }
      .poster-center{
        top:96px;
        bottom:16px;
        gap:14px;
      }
      .section{
        padding:58px 0;
      }
      .cta-banner{
        padding:22px;
      }
    }

    .btn, .nav-link, .accordion-button, .form-control{
      -webkit-tap-highlight-color: transparent;
    }

/* roulang page: article */
:root{
      --bg:#0d0b12;
      --bg-2:#14101c;
      --bg-3:#1b1524;
      --card:rgba(255,255,255,.06);
      --card-2:rgba(255,255,255,.08);
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.18);
      --text:#f4efe9;
      --muted:#b6adba;
      --muted-2:#8f8796;
      --accent:#ff4d8d;
      --accent-2:#ffb35a;
      --accent-3:#52f0d9;
      --shadow:0 20px 60px rgba(0,0,0,.36);
      --shadow-soft:0 12px 34px rgba(0,0,0,.24);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1200px;
      --gap:24px;
      --transition:.28s ease;
      --header-h:86px;
    }
    html{
      scroll-behavior:smooth;
      background:var(--bg);
      scroll-padding-top:110px;
    }
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 10%, rgba(255,77,141,.18), transparent 24%),
        radial-gradient(circle at 88% 14%, rgba(82,240,217,.10), transparent 22%),
        radial-gradient(circle at 78% 82%, rgba(255,179,90,.10), transparent 20%),
        linear-gradient(180deg, #0b0910 0%, #0d0b12 38%, #0b0910 100%);
      min-height:100vh;
      line-height:1.7;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
      background-size:36px 36px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.22), rgba(0,0,0,.04), rgba(0,0,0,.18));
      opacity:.25;
      z-index:-1;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), opacity var(--transition), transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition), filter var(--transition);
    }
    a:hover{color:#fff}
    img{max-width:100%;display:block}
    button,input,select,textarea{
      font:inherit;
    }
    .container{
      max-width:var(--container) !important;
      padding-left:18px;
      padding-right:18px;
    }
    ::selection{
      background:rgba(255,77,141,.28);
      color:#fff;
    }
    .focus-ring:focus-visible,
    a:focus-visible,
    button:focus-visible,
    .btn:focus-visible,
    .nav-link:focus-visible,
    .nav-cta:focus-visible,
    .accordion-button:focus-visible{
      outline:none !important;
      box-shadow:0 0 0 .2rem rgba(82,240,217,.18), 0 0 0 .38rem rgba(255,77,141,.08) !important;
    }

    .reading-progress{
      position:fixed;
      top:0;
      left:0;
      right:0;
      height:3px;
      z-index:1045;
      background:rgba(255,255,255,.04);
    }
    .reading-progress span{
      display:block;
      height:100%;
      width:0;
      background:linear-gradient(90deg, var(--accent), var(--accent-3));
      box-shadow:0 0 18px rgba(82,240,217,.34);
      transition:width .12s linear;
    }

    .site-header{
      position:fixed;
      top:0;
      left:0;
      right:0;
      z-index:1030;
      padding:14px 0;
      background:linear-gradient(180deg, rgba(10,8,14,.34), rgba(10,8,14,.10));
      transition:background var(--transition), box-shadow var(--transition), border-color var(--transition), backdrop-filter var(--transition), transform var(--transition);
    }
    .site-header.is-scrolled{
      background:rgba(11,9,16,.84);
      backdrop-filter:blur(18px);
      box-shadow:0 12px 40px rgba(0,0,0,.30);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .navbar{
      padding:0;
    }
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      letter-spacing:.2px;
      color:var(--text) !important;
      line-height:1;
    }
    .navbar-brand:hover{
      transform:translateY(-1px);
      color:#fff !important;
    }
    .brand-mark{
      width:36px;
      height:36px;
      border-radius:12px;
      background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,.36), transparent 32%),
        linear-gradient(145deg, rgba(255,77,141,.92), rgba(82,240,217,.7));
      box-shadow:0 12px 28px rgba(255,77,141,.15);
      border:1px solid rgba(255,255,255,.18);
      display:grid;
      place-items:center;
      color:#0d0b12;
      font-size:15px;
      font-weight:900;
      flex:0 0 auto;
    }
    .navbar-nav{
      gap:10px;
    }
    .nav-link{
      color:var(--muted) !important;
      font-weight:600;
      padding:.72rem 1rem !important;
      border-radius:999px;
      border:1px solid transparent;
      background:transparent;
      line-height:1;
    }
    .nav-link:hover,
    .nav-link:focus-visible,
    .nav-link.active{
      color:#fff !important;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.10);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
      transform:translateY(-1px);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:999px;
      padding:.86rem 1.15rem;
      border:1px solid rgba(255,255,255,.14);
      background:linear-gradient(135deg, rgba(255,77,141,.18), rgba(255,179,90,.10));
      color:#fff;
      box-shadow:var(--shadow-soft);
      font-weight:700;
      line-height:1;
    }
    .nav-cta:hover,
    .nav-cta:focus-visible,
    .nav-cta.active{
      transform:translateY(-1px);
      border-color:rgba(255,255,255,.24);
      box-shadow:0 18px 34px rgba(0,0,0,.28), 0 0 0 1px rgba(255,255,255,.06) inset;
      color:#fff;
      filter:saturate(1.04);
    }
    .navbar-toggler{
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.05);
      color:#fff;
      border-radius:14px;
      padding:.7rem .9rem;
      box-shadow:none !important;
    }
    .navbar-toggler:focus{
      box-shadow:0 0 0 .2rem rgba(82,240,217,.16) !important;
    }
    .navbar-toggler-icon{
      width:1.2em;
      height:1.2em;
      background-image:none;
      position:relative;
      display:inline-block;
    }
    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after,
    .navbar-toggler-icon span{
      content:"";
      position:absolute;
      left:0;
      right:0;
      height:2px;
      border-radius:999px;
      background:#fff;
    }
    .navbar-toggler-icon::before{top:2px}
    .navbar-toggler-icon span{top:8px}
    .navbar-toggler-icon::after{bottom:2px}

    .site-main{
      padding-top:calc(var(--header-h) + 20px);
      padding-bottom:32px;
    }

    .article-hero{
      position:relative;
      padding:38px 0 20px;
      overflow:hidden;
    }
    .article-hero::before{
      content:"";
      position:absolute;
      inset:-1px;
      pointer-events:none;
      background:
        radial-gradient(circle at 12% 18%, rgba(255,77,141,.18), transparent 20%),
        radial-gradient(circle at 82% 14%, rgba(82,240,217,.12), transparent 18%),
        radial-gradient(circle at 72% 86%, rgba(255,179,90,.12), transparent 18%);
      opacity:.96;
    }
    .breadcrumb-wrap{
      position:relative;
      z-index:1;
      margin-bottom:18px;
    }
    .breadcrumb{
      --bs-breadcrumb-divider: "·";
      display:flex;
      align-items:center;
      gap:8px;
      margin:0;
      padding:0;
      background:transparent;
      color:var(--muted);
      font-size:.95rem;
    }
    .breadcrumb-item{
      display:flex;
      align-items:center;
      gap:8px;
      color:var(--muted);
    }
    .breadcrumb-item a{
      color:rgba(244,239,233,.82);
    }
    .breadcrumb-item a:hover{
      color:#fff;
    }
    .breadcrumb-item.active{
      color:#fff;
    }
    .breadcrumb-item + .breadcrumb-item::before{
      color:rgba(182,173,186,.56);
      padding-right:.75rem;
    }

    .article-hero-card{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);
      gap:22px;
      align-items:stretch;
      padding:28px;
      border-radius:var(--radius-xl);
      background:
        linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.05)),
        linear-gradient(135deg, rgba(255,77,141,.08), rgba(82,240,217,.04) 58%, rgba(255,179,90,.05));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      backdrop-filter: blur(18px);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:.5rem .86rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      font-size:.9rem;
      font-weight:700;
      letter-spacing:.2px;
      margin-bottom:14px;
    }
    .eyebrow::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--accent), var(--accent-3));
      box-shadow:0 0 16px rgba(82,240,217,.34);
    }
    .article-title{
      margin:0 0 14px;
      font-size:clamp(2rem, 4vw, 3.5rem);
      line-height:1.1;
      letter-spacing:-.03em;
      font-weight:900;
      text-wrap:balance;
    }
    .article-desc{
      margin:0;
      color:var(--muted);
      font-size:1.04rem;
      max-width:72ch;
    }
    .article-meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .meta-chip,
    .keyword-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:.52rem .82rem;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      color:rgba(244,239,233,.95);
      font-size:.92rem;
      line-height:1;
      white-space:nowrap;
    }
    .meta-chip strong,
    .keyword-chip strong{
      font-weight:800;
      color:#fff;
    }
    .article-hero-side{
      display:flex;
      flex-direction:column;
      gap:14px;
      min-width:0;
    }
    .side-card{
      flex:1 1 auto;
      border-radius:var(--radius-lg);
      background:rgba(10,8,14,.38);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      padding:18px;
    }
    .side-card h2,
    .side-card h3,
    .info-title{
      margin:0 0 12px;
      font-size:1.02rem;
      font-weight:800;
      letter-spacing:.01em;
    }
    .side-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .side-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:var(--muted);
      font-size:.96rem;
    }
    .side-bullet{
      width:10px;
      height:10px;
      margin-top:.48rem;
      border-radius:999px;
      background:linear-gradient(135deg, var(--accent), var(--accent-2));
      box-shadow:0 0 12px rgba(255,77,141,.22);
      flex:0 0 auto;
    }
    .side-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .btn{
      --bs-btn-padding-x:1rem;
      --bs-btn-padding-y:.82rem;
      --bs-btn-border-radius:999px;
      --bs-btn-border-width:1px;
      font-weight:700;
      letter-spacing:.01em;
      transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition), color var(--transition), filter var(--transition);
    }
    .btn:hover{
      transform:translateY(-1px);
    }
    .btn-brand{
      color:#0d0b12;
      background:linear-gradient(135deg, #fff1c8, #ffb35a);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 18px 28px rgba(255,179,90,.16);
    }
    .btn-brand:hover,
    .btn-brand:focus-visible{
      color:#0d0b12;
      background:linear-gradient(135deg, #fff4d7, #ffc16f);
      box-shadow:0 22px 32px rgba(255,179,90,.18);
    }
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.04);
      border-color:rgba(255,255,255,.14);
    }
    .btn-ghost:hover,
    .btn-ghost:focus-visible{
      color:#fff;
      background:rgba(255,255,255,.07);
      border-color:rgba(255,255,255,.22);
    }

    .article-layout{
      padding:18px 0 8px;
    }
    .content-card{
      padding:24px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.09);
      box-shadow:var(--shadow-soft);
    }
    .content-topline{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding-bottom:16px;
      margin-bottom:18px;
      border-bottom:1px solid rgba(255,255,255,.08);
      color:var(--muted);
      font-size:.95rem;
    }
    .content-topline .content-topline-left{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
    }
    .content-topline .sep{
      width:4px;
      height:4px;
      border-radius:999px;
      background:rgba(182,173,186,.42);
    }

    .article-body{
      color:#efe8df;
      font-size:1.03rem;
      line-height:1.9;
      word-break:break-word;
    }
    .article-body > * + *{margin-top:1.1rem}
    .article-body h2,
    .article-body h3,
    .article-body h4{
      color:#fff;
      line-height:1.25;
      margin-top:1.8rem;
      margin-bottom:.9rem;
      font-weight:900;
      letter-spacing:-.02em;
      text-wrap:balance;
    }
    .article-body h2{
      font-size:1.7rem;
      padding-left:14px;
      border-left:4px solid var(--accent);
    }
    .article-body h3{
      font-size:1.28rem;
    }
    .article-body p{
      margin:0;
      color:#e7dfd6;
    }
    .article-body a{
      color:#fff;
      text-decoration:none;
      border-bottom:1px solid rgba(255,77,141,.48);
    }
    .article-body a:hover{
      color:#fff;
      border-bottom-color:rgba(82,240,217,.66);
    }
    .article-body strong{
      color:#fff;
      font-weight:800;
    }
    .article-body ul,
    .article-body ol{
      padding-left:1.2rem;
      margin:0;
      color:#e7dfd6;
    }
    .article-body li + li{
      margin-top:.45rem;
    }
    .article-body blockquote{
      margin:1.4rem 0;
      padding:1rem 1rem 1rem 1.1rem;
      border-left:4px solid var(--accent-3);
      background:rgba(255,255,255,.05);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      color:#f7f2ea;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
    }
    .article-body hr{
      border:0;
      height:1px;
      margin:1.7rem 0;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent);
    }
    .article-body img{
      margin:1.1rem auto;
      border-radius:20px;
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 18px 36px rgba(0,0,0,.28);
    }
    .article-body figure{
      margin:1.2rem 0;
    }
    .article-body figcaption{
      margin-top:.55rem;
      font-size:.92rem;
      color:var(--muted);
      text-align:center;
    }
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:1.4rem 0;
      overflow:hidden;
      border-radius:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.09);
    }
    .article-body th,
    .article-body td{
      padding:.82rem .92rem;
      border-bottom:1px solid rgba(255,255,255,.08);
      vertical-align:top;
    }
    .article-body th{
      color:#fff;
      font-weight:800;
      background:rgba(255,255,255,.04);
    }
    .article-body tr:last-child td{
      border-bottom:none;
    }
    .article-body pre{
      padding:1rem 1.1rem;
      border-radius:18px;
      background:#111018;
      color:#e8e0d7;
      overflow:auto;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.02);
    }
    .article-body code{
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
      font-size:.95em;
      color:#fff2d9;
      background:rgba(255,255,255,.05);
      padding:.16rem .34rem;
      border-radius:8px;
    }
    .article-body pre code{
      padding:0;
      background:transparent;
      color:inherit;
      border-radius:0;
    }

    .article-aside{
      position:relative;
    }
    .aside-sticky{
      position:sticky;
      top:104px;
      display:grid;
      gap:18px;
    }
    .info-card{
      padding:20px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.09);
      box-shadow:var(--shadow-soft);
    }
    .info-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .info-list li{
      display:flex;
      justify-content:space-between;
      gap:12px;
      color:var(--muted);
      padding-bottom:12px;
      border-bottom:1px dashed rgba(255,255,255,.08);
    }
    .info-list li:last-child{
      padding-bottom:0;
      border-bottom:none;
    }
    .info-list span:last-child{
      color:#fff;
      font-weight:700;
      text-align:right;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .tag-cloud .keyword-chip{
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.12);
    }
    .mini-links{
      display:grid;
      gap:10px;
      margin-top:14px;
    }
    .mini-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 14px;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
      color:#fff;
    }
    .mini-link:hover{
      transform:translateY(-1px);
      border-color:rgba(255,255,255,.18);
      background:rgba(255,255,255,.06);
    }
    .mini-link small{
      color:var(--muted);
    }
    .mini-link .arrow{
      width:32px;
      height:32px;
      display:grid;
      place-items:center;
      border-radius:999px;
      background:linear-gradient(135deg, rgba(255,77,141,.18), rgba(255,179,90,.12));
      border:1px solid rgba(255,255,255,.10);
      flex:0 0 auto;
    }

    .related-section{
      padding:24px 0 0;
    }
    .section-title{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:16px;
      margin-bottom:16px;
    }
    .section-title h2{
      margin:0;
      font-size:1.55rem;
      line-height:1.2;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .section-title p{
      margin:0;
      color:var(--muted);
      font-size:.96rem;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:16px;
    }
    .related-card{
      display:flex;
      gap:16px;
      padding:18px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg, rgba(255,255,255,.065), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.09);
      box-shadow:var(--shadow-soft);
      min-height:166px;
    }
    .related-card:hover{
      transform:translateY(-2px);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 18px 38px rgba(0,0,0,.28);
    }
    .related-thumb{
      width:132px;
      flex:0 0 132px;
      border-radius:20px;
      background:
        radial-gradient(circle at 28% 28%, rgba(255,255,255,.24), transparent 32%),
        linear-gradient(145deg, rgba(255,77,141,.38), rgba(82,240,217,.14) 55%, rgba(255,179,90,.24));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
      position:relative;
      overflow:hidden;
    }
    .related-thumb::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(135deg, rgba(255,255,255,.08), transparent 42%),
        linear-gradient(180deg, transparent 50%, rgba(0,0,0,.18) 100%);
    }
    .related-thumb .badge{
      position:absolute;
      left:12px;
      top:12px;
      z-index:1;
      padding:.38rem .58rem;
      border-radius:999px;
      background:rgba(13,11,18,.55);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:.78rem;
    }
    .related-copy{
      min-width:0;
      flex:1 1 auto;
    }
    .related-copy h3{
      margin:0 0 8px;
      font-size:1.08rem;
      line-height:1.35;
      font-weight:800;
    }
    .related-copy p{
      margin:0 0 12px;
      color:var(--muted);
      font-size:.95rem;
    }
    .related-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:12px;
    }
    .related-meta .meta-chip{
      font-size:.82rem;
      padding:.42rem .64rem;
    }

    .faq-section{
      padding:28px 0 0;
    }
    .faq-wrap{
      padding:24px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.09);
      box-shadow:var(--shadow-soft);
    }
    .accordion{
      --bs-accordion-bg:transparent;
      --bs-accordion-color:var(--text);
      --bs-accordion-border-color:rgba(255,255,255,.08);
      --bs-accordion-btn-color:var(--text);
      --bs-accordion-btn-bg:transparent;
      --bs-accordion-btn-focus-border-color:transparent;
      --bs-accordion-btn-focus-box-shadow:none;
      --bs-accordion-active-bg:rgba(255,255,255,.04);
      --bs-accordion-active-color:#fff;
      --bs-accordion-btn-padding-x:0;
      --bs-accordion-btn-padding-y:1rem;
      --bs-accordion-body-padding-x:0;
      --bs-accordion-body-padding-y:.2rem 0 1rem;
      gap:0;
    }
    .accordion-item{
      background:transparent;
      border:0;
      border-bottom:1px solid rgba(255,255,255,.08);
      border-radius:0 !important;
    }
    .accordion-item:first-of-type{
      border-top:1px solid rgba(255,255,255,.08);
    }
    .accordion-button{
      background:transparent;
      color:#fff;
      font-weight:800;
      font-size:1rem;
      padding:1rem 0;
      box-shadow:none !important;
    }
    .accordion-button:not(.collapsed){
      color:#fff;
      background:transparent;
    }
    .accordion-button::after{
      filter: invert(1) brightness(1.1);
      opacity:.85;
    }
    .accordion-body{
      color:var(--muted);
      padding:0 0 1rem;
    }

    .cta-section{
      padding:30px 0 8px;
    }
    .cta-panel{
      padding:24px;
      border-radius:var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255,77,141,.16), rgba(255,179,90,.10) 45%, rgba(82,240,217,.08)),
        linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow);
    }
    .cta-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:20px;
      align-items:center;
    }
    .cta-grid h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 2.8vw, 2.4rem);
      line-height:1.2;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .cta-grid p{
      margin:0;
      color:rgba(244,239,233,.82);
      max-width:60ch;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }

    .empty-state{
      padding:88px 0 36px;
      min-height:calc(100vh - 240px);
      display:grid;
      place-items:center;
      text-align:center;
    }
    .empty-card{
      width:min(680px, 100%);
      padding:30px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.09);
      box-shadow:var(--shadow);
    }
    .empty-card h1{
      margin:0 0 10px;
      font-size:clamp(2rem, 4vw, 3rem);
      line-height:1.1;
      font-weight:900;
    }
    .empty-card p{
      margin:0 0 20px;
      color:var(--muted);
    }

    .site-footer{
      padding:34px 0 26px;
      margin-top:22px;
      border-top:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(10,8,14,.18), rgba(10,8,14,.35));
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .6fr .8fr;
      gap:18px;
      padding-bottom:20px;
    }
    .footer-brand p{
      margin:14px 0 0;
      color:var(--muted);
      max-width:46ch;
    }
    .footer-links{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:10px 14px;
      align-content:start;
    }
    .footer-links a{
      color:rgba(244,239,233,.88);
      padding:.22rem 0;
      display:inline-flex;
      width:max-content;
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(2px);
    }
    .footer-meta{
      color:var(--muted);
      font-size:.96rem;
      text-align:left;
    }
    .footer-note{
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted-2);
      font-size:.92rem;
    }

    @media (max-width: 1199.98px){
      .article-hero-card{
        grid-template-columns:1fr;
      }
      .cta-grid{
        grid-template-columns:1fr;
      }
      .cta-actions{
        justify-content:flex-start;
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
      .footer-meta{
        grid-column:1 / -1;
      }
    }
    @media (max-width: 991.98px){
      .site-header{
        padding:10px 0;
      }
      .site-header .navbar-collapse{
        margin-top:14px;
        padding:14px 14px 12px;
        border-radius:22px;
        background:rgba(11,9,16,.92);
        border:1px solid rgba(255,255,255,.10);
        backdrop-filter:blur(18px);
        box-shadow:var(--shadow-soft);
      }
      .site-main{
        padding-top:78px;
      }
      .aside-sticky{
        position:static;
      }
      .related-grid{
        grid-template-columns:1fr;
      }
      .related-card{
        min-height:0;
      }
    }
    @media (max-width: 767.98px){
      .container{
        padding-left:14px;
        padding-right:14px;
      }
      .article-hero{
        padding:24px 0 14px;
      }
      .article-hero-card,
      .content-card,
      .info-card,
      .faq-wrap,
      .cta-panel,
      .empty-card{
        padding:18px;
        border-radius:22px;
      }
      .article-title{
        font-size:clamp(1.8rem, 8vw, 2.45rem);
      }
      .article-desc{
        font-size:.98rem;
      }
      .content-topline{
        flex-direction:column;
        align-items:flex-start;
      }
      .related-card{
        flex-direction:column;
      }
      .related-thumb{
        width:100%;
        flex:0 0 auto;
        aspect-ratio:16/9;
      }
      .footer-grid{
        grid-template-columns:1fr;
      }
      .footer-links{
        grid-template-columns:1fr 1fr;
      }
      .footer-note{
        flex-direction:column;
      }
      .nav-cta{
        width:100%;
      }
    }
    @media (max-width: 575.98px){
      .navbar-brand{
        font-size:.98rem;
      }
      .brand-mark{
        width:32px;
        height:32px;
        border-radius:11px;
      }
      .meta-chip,
      .keyword-chip{
        font-size:.84rem;
        padding:.45rem .65rem;
      }
      .article-meta-row{
        gap:8px;
      }
      .side-actions .btn,
      .cta-actions .btn{
        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}