/* roulang page: index */
:root{
      --bg:#090b0f;
      --bg-2:#0f1318;
      --bg-3:#141920;
      --surface:rgba(18, 22, 29, .88);
      --surface-2:rgba(255,255,255,.04);
      --line:rgba(255,255,255,.10);
      --line-2:rgba(255,255,255,.15);
      --text:#f4efe6;
      --muted:#a7afba;
      --soft:#d0d5dd;
      --primary:#ff7a1a;
      --primary-2:#ff9a4d;
      --secondary:#24d1b5;
      --secondary-2:#47d6c1;
      --shadow:0 16px 40px rgba(0,0,0,.35);
      --shadow-strong:0 24px 60px rgba(0,0,0,.55);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --container:1200px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: "PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 10%, rgba(255,122,26,.10), transparent 24%),
        radial-gradient(circle at 82% 12%, rgba(36,209,181,.09), transparent 22%),
        radial-gradient(circle at 50% 110%, rgba(255,255,255,.04), transparent 28%),
        linear-gradient(180deg, #090b0f 0%, #0b0d10 50%, #0a0c10 100%);
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,.02) 1px, transparent 1px);
      background-size: 120px 120px;
      opacity:.10;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.25), rgba(0,0,0,.9) 25%, rgba(0,0,0,.95));
      z-index:0;
    }

    a{color:inherit;text-decoration:none;transition:color .22s ease, transform .22s ease, background-color .22s ease, border-color .22s ease, box-shadow .22s ease}
    a:hover{color:#fff}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(255,122,26,.28);color:#fff}
    :focus-visible{outline:3px solid rgba(36,209,181,.45);outline-offset:3px}

    .page-wrap{position:relative;z-index:1}
    .container, .container-lg, .container-xl{max-width:var(--container)}
    .section{padding:86px 0; position:relative}
    .section + .section{border-top:1px solid rgba(255,255,255,.04)}
    .section-head{max-width:760px;margin-bottom:30px}
    .kicker{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.4rem .85rem;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.04);
      color:var(--secondary-2);
      font-size:.86rem;
      font-weight:700;
      letter-spacing:.02em;
    }
    .section-head h2{
      margin:.9rem 0 .7rem;
      font-size:clamp(1.7rem, 2.5vw, 2.75rem);
      line-height:1.14;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      font-size:1rem;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.42rem .82rem;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.04);
      color:#dfe5ee;
      font-size:.88rem;
      font-weight:700;
    }
    .eyebrow .dot{
      width:.55rem;height:.55rem;border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow:0 0 0 5px rgba(255,122,26,.12);
      flex:0 0 auto;
    }

    .btn{
      border-radius:14px;
      font-weight:700;
      padding:.88rem 1.15rem;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease, color .2s ease;
    }
    .btn:hover{transform:translateY(-1px)}
    .btn:active{transform:translateY(0) scale(.985)}
    .btn-brand{
      background:linear-gradient(135deg, var(--primary), #ff9a4d);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      box-shadow:0 16px 30px rgba(255,122,26,.16);
    }
    .btn-brand:hover{color:#fff; box-shadow:0 20px 36px rgba(255,122,26,.22)}
    .btn-soft{
      background:rgba(255,255,255,.05);
      color:#fff;
      border:1px solid rgba(255,255,255,.12);
    }
    .btn-soft:hover{background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.18); color:#fff}
    .btn-outline-light{
      border-color:rgba(255,255,255,.16);
      color:#fff;
      background:transparent;
    }
    .btn-outline-light:hover{background:rgba(255,255,255,.06); color:#fff}
    .btn-topbar{
      padding:.48rem .92rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      color:#fff;
      border:1px solid rgba(255,255,255,.12);
      font-weight:700;
      font-size:.88rem;
    }
    .btn-topbar:hover{background:rgba(255,255,255,.11); color:#fff}

    .site-sticky{
      position:sticky;
      top:0;
      z-index:1030;
    }
    .topbar{
      background:rgba(9,11,15,.96);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      padding:.6rem 0;
    }
    .topbar-left, .topbar-center, .topbar-right{
      display:flex;
      align-items:center;
      gap:.75rem;
      min-width:0;
    }
    .topbar-left{
      font-weight:800;
      letter-spacing:.02em;
      color:#fff;
    }
    .domain-mark{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.3rem .7rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#fff;
      font-weight:700;
    }
    .domain-mark .mini-dot{
      width:.55rem;height:.55rem;border-radius:50%;
      background:linear-gradient(135deg, var(--secondary), var(--primary));
      box-shadow:0 0 0 4px rgba(36,209,181,.12);
    }
    .topbar-center{
      color:var(--muted);
      font-size:.93rem;
      justify-content:center;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      flex:1;
    }
    .topbar-right{justify-content:flex-end}

    .site-header{
      background:rgba(13,16,22,.92);
      border-bottom:1px solid rgba(255,255,255,.08);
      box-shadow:0 14px 36px rgba(0,0,0,.18);
    }
    .navbar{
      padding:1rem 0;
    }
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:.9rem;
      color:#fff;
      min-width:0;
    }
    .brand-icon{
      width:46px;height:46px;
      border-radius:16px;
      background:
        linear-gradient(135deg, rgba(255,122,26,.95), rgba(36,209,181,.82));
      position:relative;
      box-shadow:0 16px 30px rgba(255,122,26,.18);
      flex:0 0 auto;
    }
    .brand-icon::before{
      content:"";
      position:absolute;
      inset:11px 12px 11px 15px;
      border:2px solid rgba(255,255,255,.9);
      border-left-color:transparent;
      clip-path:polygon(0 0, 100% 50%, 0 100%);
      border-radius:4px;
    }
    .brand-text{
      min-width:0;
    }
    .brand-title{
      display:block;
      font-size:1.08rem;
      line-height:1.1;
      font-weight:900;
      letter-spacing:.01em;
      color:#fff;
      white-space:nowrap;
    }
    .brand-sub{
      display:block;
      color:var(--muted);
      font-size:.8rem;
      margin-top:.15rem;
      white-space:nowrap;
    }
    .navbar-toggler{
      border-color:rgba(255,255,255,.12);
      color:#fff;
      box-shadow:none!important;
    }
    .navbar-toggler-icon{
      filter:invert(1) brightness(1.6);
    }
    .navbar-nav{
      gap:.25rem;
    }
    .navbar .nav-link{
      color:var(--soft);
      font-weight:700;
      padding:.68rem .95rem;
      border-radius:999px;
      border:1px solid transparent;
      transition:transform .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
    }
    .navbar .nav-link:hover,
    .navbar .nav-link.active{
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.1);
      transform:translateY(-1px);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
    }

    .hero{
      padding:72px 0 36px;
      position:relative;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:auto 0 0 0;
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,122,26,.28), rgba(36,209,181,.22), transparent);
      opacity:.8;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.08fr .92fr;
      gap:1.75rem;
      align-items:stretch;
    }
    .hero-copy{
      padding:1rem 0 .5rem;
    }
    .hero h1{
      margin:.95rem 0 .95rem;
      font-size:clamp(2.4rem, 4.4vw, 4.55rem);
      line-height:1.06;
      letter-spacing:-.04em;
    }
    .hero p{
      color:var(--muted);
      font-size:1.06rem;
      max-width:58rem;
      margin-bottom:0;
    }
    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:.65rem;
      list-style:none;
      padding:0;
      margin:1.35rem 0 1.35rem;
    }
    .hero-points li{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      padding:.58rem .8rem;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:#e7ebf0;
      font-size:.94rem;
    }
    .hero-points li::before{
      content:"";
      width:.5rem;
      height:.5rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--secondary));
      flex:0 0 auto;
      box-shadow:0 0 0 4px rgba(255,122,26,.12);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:.8rem;
      margin:1.2rem 0 1.2rem;
    }
    .hero-trust{
      display:flex;
      flex-wrap:wrap;
      gap:.8rem 1.2rem;
      align-items:center;
      color:var(--muted);
      font-size:.95rem;
      margin-top:1rem;
    }
    .hero-trust span{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
    }
    .hero-trust i{
      color:var(--secondary-2);
      font-style:normal;
      font-weight:900;
    }

    .hero-stage{
      position:relative;
      min-height:560px;
      border-radius:var(--radius-xl);
    }
    .poster-card{
      position:relative;
      min-height:100%;
      padding:1.25rem;
      border-radius:var(--radius-xl);
      background:
        linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03)),
        radial-gradient(circle at 20% 10%, rgba(255,122,26,.14), transparent 24%),
        radial-gradient(circle at 80% 8%, rgba(36,209,181,.10), transparent 22%),
        linear-gradient(180deg, rgba(17,20,25,.98), rgba(13,16,20,.94));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:var(--shadow-strong);
      overflow:hidden;
    }
    .poster-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,.02) 1px, transparent 1px);
      background-size: 38px 38px;
      opacity:.28;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.7), rgba(0,0,0,.95));
      pointer-events:none;
    }
    .poster-card::after{
      content:"";
      position:absolute;
      inset:auto 0 0 0;
      height:150px;
      background:linear-gradient(180deg, transparent, rgba(9,11,15,.86));
      pointer-events:none;
    }
    .poster-topline{
      position:relative;
      z-index:1;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:1rem;
      color:var(--muted);
      font-size:.92rem;
      margin-bottom:1rem;
    }
    .poster-title{
      position:relative;
      z-index:1;
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:1rem;
      margin-bottom:1.2rem;
    }
    .poster-title h2{
      margin:0;
      font-size:clamp(1.45rem, 2.4vw, 2.1rem);
      line-height:1.1;
      max-width:10ch;
    }
    .poster-title .tag{
      margin-left:auto;
      padding:.45rem .75rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      color:#fff;
      font-weight:700;
      border:1px solid rgba(255,255,255,.10);
      font-size:.85rem;
      white-space:nowrap;
    }
    .poster-visual{
      position:relative;
      z-index:1;
      min-height:250px;
      border-radius:26px;
      padding:1.1rem;
      background:
        radial-gradient(circle at 20% 18%, rgba(255,122,26,.22), transparent 18%),
        radial-gradient(circle at 78% 20%, rgba(36,209,181,.18), transparent 20%),
        linear-gradient(160deg, rgba(255,255,255,.08), rgba(255,255,255,.03)),
        linear-gradient(180deg, rgba(26,30,36,.98), rgba(14,17,22,.98));
      border:1px solid rgba(255,255,255,.09);
      overflow:hidden;
    }
    .poster-visual .poster-label{
      display:flex;
      gap:.5rem;
      flex-wrap:wrap;
      position:relative;
      z-index:1;
    }
    .poster-visual .poster-label span,
    .mini-chip{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.42rem .72rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      color:#e7ebf0;
      font-size:.84rem;
      font-weight:700;
    }
    .poster-visual .poster-mark{
      position:absolute;
      left:1.1rem;
      bottom:1rem;
      right:1.1rem;
      z-index:1;
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:1rem;
    }
    .poster-visual .poster-mark strong{
      display:block;
      font-size:2.2rem;
      line-height:1;
      letter-spacing:.02em;
    }
    .poster-visual .poster-mark small{
      display:block;
      color:var(--muted);
      margin-top:.25rem;
    }
    .poster-visual .poster-ring{
      position:absolute;
      inset:auto auto 1.1rem 1.1rem;
      width:92px;
      height:92px;
      border-radius:50%;
      border:1px solid rgba(255,255,255,.16);
      background:radial-gradient(circle at 35% 35%, rgba(255,122,26,.28), rgba(36,209,181,.16) 45%, rgba(255,255,255,.02) 75%);
      box-shadow:0 0 0 14px rgba(255,255,255,.02);
      opacity:.95;
    }
    .poster-visual .poster-ring::before{
      content:"";
      position:absolute;
      inset:20px;
      border-radius:50%;
      border:2px solid rgba(255,255,255,.9);
      clip-path:polygon(0 0, 100% 50%, 0 100%);
      transform:translateX(8px);
    }
    .mini-card{
      position:absolute;
      right:-8px;
      width:46%;
      padding:1rem 1rem 1rem 1rem;
      border-radius:22px;
      background:rgba(18,22,29,.96);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      backdrop-filter:none;
    }
    .mini-card h3{
      font-size:1.02rem;
      margin:0 0 .45rem;
      line-height:1.35;
    }
    .mini-card p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
      line-height:1.65;
    }
    .mini-a{top:1rem; transform:rotate(1.8deg)}
    .mini-b{bottom:1.2rem; transform:rotate(-2.2deg)}
    .mini-card .mini-bar{
      display:flex;
      align-items:center;
      gap:.55rem;
      flex-wrap:wrap;
      margin-top:.8rem;
    }
    .mini-card .mini-bar span{
      display:inline-flex;
      align-items:center;
      padding:.35rem .55rem;
      border-radius:999px;
      font-size:.8rem;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
      color:#ecf1f7;
    }

    .metrics-row{
      display:flex;
      flex-wrap:wrap;
      gap:.75rem;
      margin-top:1.2rem;
    }
    .metric-pill{
      display:flex;
      align-items:center;
      gap:.7rem;
      padding:.8rem 1rem;
      border-radius:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      min-width:180px;
      flex:1 1 180px;
    }
    .metric-pill strong{
      display:block;
      font-size:1.2rem;
      line-height:1.1;
      color:#fff;
    }
    .metric-pill span{
      display:block;
      color:var(--muted);
      font-size:.88rem;
      margin-top:.15rem;
      line-height:1.45;
    }

    .panel{
      background:linear-gradient(180deg, rgba(20,24,31,.95), rgba(14,17,23,.94));
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      height:100%;
    }
    .panel-hover{
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .panel-hover:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.14);
      box-shadow:0 22px 46px rgba(0,0,0,.38);
    }
    .panel-body{padding:1.2rem}
    .panel-head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:1rem;
      margin-bottom:1rem;
    }
    .panel-head h3{
      margin:0;
      font-size:1.14rem;
      line-height:1.35;
    }
    .panel-head .panel-tag{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.35rem .65rem;
      border-radius:999px;
      background:rgba(255,122,26,.12);
      border:1px solid rgba(255,122,26,.18);
      color:#ffbc8a;
      font-size:.8rem;
      font-weight:800;
      white-space:nowrap;
    }
    .panel p{color:var(--muted); margin:0}

    .bento-grid{
      display:grid;
      grid-template-columns: 1.35fr .82fr .82fr;
      gap:1rem;
    }
    .feature-main{
      grid-row: span 2;
      min-height:100%;
    }
    .icon-box{
      width:48px;
      height:48px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(255,122,26,.16), rgba(36,209,181,.14));
      border:1px solid rgba(255,255,255,.08);
      color:#fff;
      font-weight:900;
      margin-bottom:1rem;
      box-shadow:0 12px 24px rgba(0,0,0,.18);
    }
    .feature-list{
      list-style:none;
      padding:0;
      margin:1rem 0 0;
      display:grid;
      gap:.6rem;
    }
    .feature-list li{
      display:flex;
      gap:.6rem;
      color:#dbe1e8;
      line-height:1.55;
    }
    .feature-list li::before{
      content:"";
      width:.58rem;
      height:.58rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--secondary), var(--primary));
      margin-top:.55rem;
      flex:0 0 auto;
      box-shadow:0 0 0 4px rgba(36,209,181,.12);
    }
    .chip-row{
      display:flex;
      flex-wrap:wrap;
      gap:.5rem;
      margin-top:1rem;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.38rem .72rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#eef2f7;
      font-size:.83rem;
      font-weight:700;
    }
    .chip.accent{
      background:rgba(36,209,181,.10);
      border-color:rgba(36,209,181,.18);
      color:#bff7ec;
    }
    .chip.warn{
      background:rgba(255,122,26,.10);
      border-color:rgba(255,122,26,.18);
      color:#ffd0b0;
    }

    .scenario-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:1rem;
    }
    .scenario-stack{
      display:grid;
      gap:1rem;
    }
    .scenario-card{
      padding:1.25rem;
    }
    .scenario-card .scenario-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      margin-bottom:.85rem;
    }
    .scenario-card .scenario-top .state{
      padding:.38rem .65rem;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
      color:var(--soft);
      font-size:.82rem;
      font-weight:700;
    }
    .scenario-card h3{
      margin:0 0 .5rem;
      font-size:1.08rem;
      line-height:1.4;
    }
    .scenario-card p{
      margin:0;
      color:var(--muted);
      line-height:1.7;
    }
    .scenario-visual{
      padding:1.2rem;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:100%;
      background:
        radial-gradient(circle at 24% 12%, rgba(255,122,26,.12), transparent 22%),
        radial-gradient(circle at 82% 6%, rgba(36,209,181,.12), transparent 18%),
        linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
    }
    .scenario-visual .timeline{
      display:grid;
      gap:.9rem;
      margin-top:1.1rem;
    }
    .timeline-item{
      display:flex;
      gap:.8rem;
      align-items:flex-start;
    }
    .timeline-item .mark{
      width:12px;
      height:12px;
      border-radius:50%;
      margin-top:.55rem;
      background:linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow:0 0 0 5px rgba(255,122,26,.12);
      flex:0 0 auto;
    }
    .timeline-item strong{
      display:block;
      font-size:.98rem;
      margin-bottom:.15rem;
    }
    .timeline-item span{
      display:block;
      color:var(--muted);
      font-size:.92rem;
      line-height:1.6;
    }

    .case-grid{
      display:grid;
      grid-template-columns: repeat(4, 1fr);
      gap:1rem;
    }
    .case-card{
      padding:1.15rem;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:100%;
    }
    .case-avatar{
      width:50px;
      height:50px;
      border-radius:18px;
      display:grid;
      place-items:center;
      font-weight:900;
      color:#fff;
      background:
        linear-gradient(135deg, rgba(255,122,26,.95), rgba(36,209,181,.82));
      box-shadow:0 14px 24px rgba(0,0,0,.24);
      margin-bottom:1rem;
    }
    .case-card h3{
      font-size:1.03rem;
      margin:0 0 .5rem;
      line-height:1.45;
    }
    .case-card blockquote{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
      line-height:1.72;
    }
    .case-foot{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:1rem;
      margin-top:1rem;
      color:var(--muted);
      font-size:.86rem;
    }
    .case-foot .case-tag{
      display:inline-flex;
      align-items:center;
      padding:.34rem .6rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#e7ecf2;
      font-weight:700;
    }
    .case-wide{
      margin-top:1rem;
      padding:1.2rem;
      display:flex;
      justify-content:space-between;
      gap:1rem;
      align-items:center;
    }
    .case-wide p{margin:0;color:var(--muted)}
    .case-wide .wide-list{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      justify-content:flex-end;
    }

    .results-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:1rem;
    }
    .kpi-grid{
      display:grid;
      grid-template-columns: repeat(2, 1fr);
      gap:1rem;
    }
    .stat-card{
      padding:1.15rem;
    }
    .stat-card .stat-head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:1rem;
      margin-bottom:.7rem;
    }
    .stat-card .stat-head span{
      display:inline-flex;
      align-items:center;
      padding:.32rem .6rem;
      border-radius:999px;
      background:rgba(36,209,181,.1);
      border:1px solid rgba(36,209,181,.18);
      color:#bff7ec;
      font-size:.82rem;
      font-weight:800;
    }
    .stat-card strong{
      display:block;
      font-size:1.95rem;
      line-height:1;
      margin-bottom:.35rem;
      letter-spacing:-.03em;
    }
    .stat-card p{
      margin:0;
      color:var(--muted);
      line-height:1.65;
    }
    .meter{
      margin-top:.9rem;
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      overflow:hidden;
    }
    .meter span{
      display:block;
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg, var(--primary), var(--secondary));
      box-shadow:0 0 20px rgba(255,122,26,.24);
    }

    .compare-card{
      padding:1.2rem;
    }
    .compare-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      margin-bottom:1rem;
    }
    .compare-head h3{
      margin:0;
      font-size:1.12rem;
    }
    .compare-head .label{
      padding:.34rem .62rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:var(--soft);
      font-size:.82rem;
      font-weight:700;
    }
    .compare-list{
      display:grid;
      gap:.75rem;
    }
    .compare-row{
      display:grid;
      grid-template-columns: auto 1fr;
      gap:.7rem;
      align-items:start;
      padding:.8rem .85rem;
      border-radius:16px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
    }
    .compare-row .bullet{
      width:10px;
      height:10px;
      border-radius:50%;
      margin-top:.5rem;
      background:linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow:0 0 0 5px rgba(255,122,26,.10);
    }
    .compare-row strong{
      display:block;
      margin-bottom:.15rem;
      font-size:.96rem;
    }
    .compare-row span{
      color:var(--muted);
      font-size:.92rem;
      line-height:1.68;
    }

    .pricing-grid{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap:1rem;
      align-items:stretch;
    }
    .price-card{
      position:relative;
      padding:1.4rem;
    }
    .price-card.popular{
      transform:translateY(-8px);
      border-color:rgba(255,122,26,.24);
      box-shadow:0 28px 62px rgba(0,0,0,.46);
      background:
        radial-gradient(circle at 20% 12%, rgba(255,122,26,.12), transparent 20%),
        linear-gradient(180deg, rgba(23,27,35,.98), rgba(14,17,24,.95));
    }
    .price-badge{
      position:absolute;
      top:1rem;
      right:1rem;
      padding:.35rem .65rem;
      border-radius:999px;
      background:rgba(255,122,26,.12);
      border:1px solid rgba(255,122,26,.18);
      color:#ffd0b0;
      font-size:.8rem;
      font-weight:800;
    }
    .price-card h3{
      margin:0;
      font-size:1.18rem;
    }
    .price{
      display:flex;
      align-items:flex-end;
      gap:.35rem;
      margin:.85rem 0 .85rem;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .price strong{
      font-size:2.7rem;
      line-height:1;
    }
    .price small{
      color:var(--muted);
      font-size:.96rem;
      padding-bottom:.25rem;
    }
    .price-note{
      color:var(--muted);
      margin:0 0 1rem;
      font-size:.95rem;
      line-height:1.7;
    }
    .price-features{
      list-style:none;
      padding:0;
      margin:0 0 1.25rem;
      display:grid;
      gap:.6rem;
    }
    .price-features li{
      display:flex;
      gap:.55rem;
      color:#e8edf3;
      line-height:1.55;
    }
    .price-features li::before{
      content:"";
      width:.56rem;
      height:.56rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--secondary), var(--primary));
      margin-top:.52rem;
      flex:0 0 auto;
      box-shadow:0 0 0 4px rgba(36,209,181,.10);
    }

    .update-layout{
      display:grid;
      grid-template-columns: 1.18fr .82fr;
      gap:1rem;
    }
    .update-list{
      display:grid;
      grid-template-columns: repeat(2, 1fr);
      gap:1rem;
    }
    .update-card{
      padding:1.15rem;
      display:flex;
      flex-direction:column;
      min-height:100%;
    }
    .update-card .meta{
      display:flex;
      flex-wrap:wrap;
      gap:.5rem;
      align-items:center;
      color:var(--muted);
      font-size:.85rem;
      margin-bottom:.35rem;
    }
    .update-card .meta .cate{
      padding:.32rem .58rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#eef2f7;
      font-weight:700;
    }
    .update-card h3{
      margin:.3rem 0 .55rem;
      font-size:1.05rem;
      line-height:1.5;
    }
    .update-card p{
      margin:0;
      color:var(--muted);
      line-height:1.72;
      flex:1 1 auto;
    }
    .update-card .card-foot{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:1rem;
      margin-top:1rem;
      color:var(--muted);
      font-size:.88rem;
    }
    .update-card .more{
      color:#fff;
      font-weight:800;
      display:inline-flex;
      align-items:center;
      gap:.35rem;
    }
    .update-card .more span{
      color:var(--secondary-2);
      font-weight:900;
      transition:transform .2s ease;
    }
    .update-card:hover .more span{
      transform:translateX(2px);
    }
    .update-rail{
      position:sticky;
      top:128px;
      align-self:start;
    }
    .rail-card{
      padding:1.3rem;
    }
    .rail-title{
      font-size:1.12rem;
      margin:0 0 .5rem;
      line-height:1.4;
    }
    .rail-text{
      margin:0;
      color:var(--muted);
      line-height:1.72;
    }
    .rail-list{
      list-style:none;
      padding:0;
      margin:1rem 0 0;
      display:grid;
      gap:.78rem;
    }
    .rail-list li{
      display:flex;
      gap:.7rem;
      align-items:flex-start;
      color:#dbe1e8;
      line-height:1.62;
    }
    .rail-list li::before{
      content:"";
      width:.58rem;
      height:.58rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--secondary), var(--primary));
      margin-top:.55rem;
      flex:0 0 auto;
      box-shadow:0 0 0 4px rgba(36,209,181,.10);
    }

    .empty-state{
      padding:1.4rem;
      border-radius:18px;
      border:1px dashed rgba(255,255,255,.16);
      background:rgba(255,255,255,.03);
      color:var(--muted);
    }

    .accordion{
      --bs-accordion-bg: transparent;
      --bs-accordion-border-color: transparent;
      --bs-accordion-btn-focus-box-shadow: none;
      --bs-accordion-active-color: #fff;
      --bs-accordion-active-bg: rgba(255,255,255,.04);
      --bs-accordion-btn-color: #fff;
      --bs-accordion-color: var(--soft);
      --bs-accordion-btn-padding-x: 1.15rem;
      --bs-accordion-btn-padding-y: 1rem;
      --bs-accordion-body-padding-x: 1.15rem;
      --bs-accordion-body-padding-y: 0 1.15rem 1.1rem;
    }
    .accordion-item{
      margin-bottom:.9rem;
      border-radius:20px !important;
      overflow:hidden;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .accordion-button{
      background:transparent;
      color:#fff;
      font-weight:800;
      box-shadow:none !important;
    }
    .accordion-button:not(.collapsed){
      color:#fff;
      background:rgba(255,255,255,.04);
    }
    .accordion-button::after{
      filter:invert(1) brightness(1.2);
    }
    .accordion-body{
      color:var(--muted);
      line-height:1.78;
      padding:0 1.15rem 1.1rem;
    }

    .cta-panel{
      padding:1.55rem;
      border-radius:var(--radius-xl);
      border:1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(circle at 15% 10%, rgba(255,122,26,.14), transparent 20%),
        radial-gradient(circle at 86% 16%, rgba(36,209,181,.14), transparent 18%),
        linear-gradient(135deg, rgba(21,25,32,.98), rgba(12,15,20,.96));
      box-shadow:var(--shadow-strong);
    }
    .cta-grid{
      display:grid;
      grid-template-columns: 1.12fr .88fr;
      gap:1rem;
      align-items:center;
    }
    .cta-panel h2{
      margin:0 0 .6rem;
      font-size:clamp(1.6rem, 2.6vw, 2.65rem);
      line-height:1.12;
    }
    .cta-panel p{
      margin:0;
      color:var(--muted);
      line-height:1.72;
    }
    .cta-form{
      display:flex;
      gap:.75rem;
      flex-wrap:wrap;
      margin-top:1rem;
    }
    .form-control{
      min-height:52px;
      border-radius:16px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:#fff;
      padding:.8rem 1rem;
      box-shadow:none !important;
    }
    .form-control::placeholder{color:#9ea8b5}
    .form-control:focus{
      background:rgba(255,255,255,.06);
      border-color:rgba(36,209,181,.35);
      color:#fff;
    }
    .cta-help{
      margin-top:.8rem;
      color:var(--muted);
      font-size:.9rem;
    }

    .site-footer{
      padding:2.2rem 0 3rem;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted);
    }
    .footer-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:1rem;
      padding-bottom:1rem;
      border-bottom:1px solid rgba(255,255,255,.06);
      margin-bottom:1rem;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:.8rem;
      color:#fff;
    }
    .footer-brand .name{
      font-size:1.05rem;
      font-weight:900;
      line-height:1.25;
    }
    .footer-brand .desc{
      display:block;
      color:var(--muted);
      font-size:.88rem;
      margin-top:.2rem;
      line-height:1.5;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:.75rem 1rem;
      justify-content:flex-end;
      align-items:center;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:700;
    }
    .footer-links a:hover{color:#fff}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:1rem;
      flex-wrap:wrap;
      font-size:.88rem;
    }
    .footer-bottom strong{color:#fff}

    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.34rem .62rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#edf2f8;
      font-size:.8rem;
      font-weight:700;
      white-space:nowrap;
    }

    .lead-line{
      display:flex;
      align-items:center;
      gap:.6rem;
      flex-wrap:wrap;
      margin-top:1rem;
    }
    .lead-line .line-chip{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.38rem .62rem;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:#e8edf3;
      font-size:.84rem;
      font-weight:700;
    }

    .mini-section-note{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.36rem .68rem;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(255,255,255,.04);
      color:#e7edf3;
      font-size:.82rem;
      font-weight:700;
    }

    .link-more{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      color:#fff;
      font-weight:800;
    }
    .link-more span{color:var(--secondary-2);font-weight:900}
    .link-more:hover{color:#fff}

    @media (max-width: 1199.98px){
      .hero-grid,.scenario-grid,.results-grid,.update-layout,.cta-grid{grid-template-columns:1fr}
      .bento-grid{grid-template-columns:1fr 1fr}
      .feature-main{grid-column:span 2}
      .case-grid{grid-template-columns:repeat(2,1fr)}
      .pricing-grid{grid-template-columns:repeat(2,1fr)}
      .update-rail{position:static}
    }
    @media (max-width: 991.98px){
      .navbar-collapse{
        padding: .85rem 0 0;
      }
      .navbar-nav{
        gap:.35rem;
      }
      .navbar .nav-link{
        border-radius:16px;
      }
      .hero{
        padding-top:54px;
      }
      .hero-stage{
        min-height:500px;
      }
      .mini-card{
        width:44%;
      }
      .topbar-center{display:none}
      .footer-top{
        flex-direction:column;
      }
      .footer-links{
        justify-content:flex-start;
      }
      .update-list{
        grid-template-columns:1fr;
      }
    }
    @media (max-width: 767.98px){
      .section{padding:66px 0}
      .hero h1{font-size:clamp(2rem, 10vw, 3rem)}
      .hero p{font-size:1rem}
      .hero-actions{flex-direction:column}
      .hero-actions .btn{width:100%;justify-content:center}
      .hero-points{gap:.5rem}
      .hero-points li{width:100%}
      .hero-stage{min-height:460px}
      .mini-card{
        position:static;
        width:100%;
        margin-top:1rem;
        transform:none!important;
      }
      .poster-card{padding:1rem}
      .poster-visual{min-height:220px}
      .poster-visual .poster-mark strong{font-size:1.8rem}
      .bento-grid,.case-grid,.pricing-grid,.kpi-grid{grid-template-columns:1fr}
      .feature-main{grid-column:auto;grid-row:auto}
      .panel-body,.scenario-card,.case-card,.stat-card,.price-card,.update-card,.compare-card,.rail-card{padding:1rem}
      .case-wide{flex-direction:column;align-items:flex-start}
      .case-wide .wide-list{justify-content:flex-start}
      .topbar-inner{gap:.5rem}
      .topbar-left{font-size:.92rem}
      .domain-mark{padding:.28rem .62rem}
      .brand-icon{width:40px;height:40px}
      .brand-title{font-size:1rem}
      .cta-panel{padding:1.15rem}
      .cta-form .btn{width:100%}
    }
    @media (max-width: 575.98px){
      .topbar{display:block}
      .topbar-inner{padding:.55rem 0}
      .topbar-right .btn-topbar{padding:.42rem .72rem}
      .section-head h2{font-size:1.55rem}
      .hero{padding-top:42px}
      .hero-stage{min-height:420px}
      .poster-title{flex-direction:column; align-items:flex-start}
      .poster-title .tag{margin-left:0}
      .price strong{font-size:2.35rem}
      .accordion-button{padding-left:1rem;padding-right:1rem}
      .accordion-body{padding-left:1rem;padding-right:1rem}
      .footer-bottom{flex-direction:column}
    }

/* roulang page: article */
:root{
      --bg:#090b0f;
      --bg-2:#0f1318;
      --bg-3:#141920;
      --surface:rgba(18, 22, 29, .88);
      --surface-2:rgba(255,255,255,.04);
      --line:rgba(255,255,255,.10);
      --line-2:rgba(255,255,255,.15);
      --text:#f4efe6;
      --muted:#a7afba;
      --soft:#d0d5dd;
      --primary:#ff7a1a;
      --primary-2:#ff9a4d;
      --secondary:#24d1b5;
      --secondary-2:#47d6c1;
      --shadow:0 16px 40px rgba(0,0,0,.35);
      --shadow-strong:0 24px 60px rgba(0,0,0,.55);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 10%, rgba(255,122,26,.10), transparent 24%),
        radial-gradient(circle at 82% 12%, rgba(36,209,181,.09), transparent 22%),
        radial-gradient(circle at 50% 110%, rgba(255,255,255,.04), transparent 28%),
        linear-gradient(180deg, #090b0f 0%, #0b0d10 50%, #0a0c10 100%);
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,.02) 1px, transparent 1px);
      background-size:120px 120px;
      opacity:.10;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.25), rgba(0,0,0,.9) 25%, rgba(0,0,0,.95));
      z-index:0;
    }
    ::selection{background:rgba(255,122,26,.3); color:#fff}
    a{color:inherit;text-decoration:none;transition:color .22s ease, transform .22s ease, background-color .22s ease, border-color .22s ease, box-shadow .22s ease}
    a:hover{color:#fff}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    .container,.container-lg,.container-xl{max-width:var(--container)}
    .site-wrap{position:relative;z-index:1}
    .topbar{
      position:sticky;
      top:0;
      z-index:1030;
      background:rgba(9,11,15,.96);
      border-bottom:1px solid rgba(255,255,255,.08);
      backdrop-filter:saturate(120%) blur(10px);
    }
    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      padding:.6rem 0;
    }
    .topbar-left,.topbar-center,.topbar-right{
      display:flex;
      align-items:center;
      gap:.75rem;
      min-width:0;
    }
    .domain-mark{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.3rem .7rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#fff;
      font-weight:700;
      letter-spacing:.02em;
      white-space:nowrap;
    }
    .domain-mark .mini-dot{
      width:.55rem;
      height:.55rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--secondary), var(--primary));
      box-shadow:0 0 0 4px rgba(36,209,181,.12);
      flex:0 0 auto;
    }
    .topbar-center{
      color:var(--muted);
      font-size:.93rem;
      justify-content:center;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      flex:1;
    }
    .btn-topbar{
      padding:.48rem .92rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      color:#fff;
      border:1px solid rgba(255,255,255,.12);
      font-weight:700;
      font-size:.88rem;
      line-height:1.2;
    }
    .btn-topbar:hover{background:rgba(255,255,255,.11); color:#fff; border-color:rgba(255,255,255,.18); transform:translateY(-1px)}
    .site-header{
      background:rgba(13,16,22,.92);
      border-bottom:1px solid rgba(255,255,255,.08);
      box-shadow:0 14px 36px rgba(0,0,0,.18);
    }
    .navbar{padding:1rem 0}
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:.9rem;
      color:#fff;
      min-width:0;
    }
    .brand-icon{
      width:46px;
      height:46px;
      border-radius:16px;
      background:linear-gradient(135deg, rgba(255,122,26,.95), rgba(36,209,181,.82));
      position:relative;
      box-shadow:0 16px 30px rgba(255,122,26,.18);
      flex:0 0 auto;
    }
    .brand-icon::before{
      content:"";
      position:absolute;
      inset:11px 12px 11px 15px;
      border:2px solid rgba(255,255,255,.92);
      border-left-color:transparent;
      clip-path:polygon(0 0, 100% 50%, 0 100%);
      border-radius:4px;
    }
    .brand-text{min-width:0; display:flex; flex-direction:column; gap:.05rem}
    .brand-title{
      font-size:1.08rem;
      line-height:1.15;
      font-weight:900;
      letter-spacing:.02em;
      color:#fff;
    }
    .brand-sub{
      color:var(--muted);
      font-size:.84rem;
      line-height:1.2;
    }
    .navbar-toggler{
      border-color:rgba(255,255,255,.12);
      background:rgba(255,255,255,.04);
      border-radius:14px;
      padding:.7rem .82rem;
      box-shadow:none!important;
    }
    .navbar-toggler:focus{box-shadow:0 0 0 .2rem rgba(255,122,26,.18)!important}
    .navbar-toggler-icon{
      filter:invert(1) brightness(1.7);
      opacity:.9;
    }
    .navbar-nav{
      gap:.35rem;
      align-items:center;
    }
    .nav-link{
      color:var(--soft);
      font-weight:700;
      border-radius:999px;
      padding:.62rem .95rem!important;
      border:1px solid transparent;
      font-size:.95rem;
      white-space:nowrap;
    }
    .nav-link:hover,
    .nav-link:focus{
      color:#fff;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.08);
    }
    .nav-link.active{
      color:#fff!important;
      background:rgba(255,122,26,.12);
      border-color:rgba(255,122,26,.30);
      box-shadow:inset 0 0 0 1px rgba(255,122,26,.10);
    }
    .nav-cta.btn{
      border-radius:999px;
      font-weight:800;
      padding:.74rem 1.12rem;
    }
    .btn{
      border-radius:14px;
      font-weight:700;
      padding:.88rem 1.15rem;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease, color .2s ease;
      border-width:1px;
    }
    .btn:hover{transform:translateY(-1px)}
    .btn:active{transform:translateY(0) scale(.985)}
    .btn-brand{
      background:linear-gradient(135deg, var(--primary), #ff9a4d);
      border-color:rgba(255,255,255,.12);
      color:#fff;
      box-shadow:0 16px 30px rgba(255,122,26,.16);
    }
    .btn-brand:hover{color:#fff; box-shadow:0 20px 36px rgba(255,122,26,.22)}
    .btn-soft{
      background:rgba(255,255,255,.05);
      color:#fff;
      border-color:rgba(255,255,255,.12);
    }
    .btn-soft:hover{background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.18); color:#fff}
    .btn-outline-light{
      border-color:rgba(255,255,255,.16);
      color:#fff;
      background:transparent;
    }
    .btn-outline-light:hover{background:rgba(255,255,255,.06); color:#fff; border-color:rgba(255,255,255,.22)}
    .btn-secondary-soft{
      background:rgba(36,209,181,.10);
      border-color:rgba(36,209,181,.25);
      color:#d8fffa;
    }
    .btn-secondary-soft:hover{background:rgba(36,209,181,.15); color:#fff}
    .section{
      padding:76px 0;
      position:relative;
    }
    .section + .section{border-top:1px solid rgba(255,255,255,.04)}
    .section-head{
      max-width:760px;
      margin-bottom:30px;
    }
    .section-head h2{
      margin:.9rem 0 .7rem;
      font-size:clamp(1.7rem, 2.5vw, 2.75rem);
      line-height:1.14;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      font-size:1rem;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.42rem .82rem;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.04);
      color:#dfe5ee;
      font-size:.88rem;
      font-weight:700;
      letter-spacing:.01em;
    }
    .eyebrow .dot{
      width:.55rem;
      height:.55rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow:0 0 0 5px rgba(255,122,26,.12);
      flex:0 0 auto;
    }
    .article-hero{
      padding:34px 0 24px;
    }
    .article-hero-card,
    .article-card,
    .side-card,
    .cta-panel,
    .faq-card,
    .related-card{
      background:var(--surface);
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow);
    }
    .article-hero-card{
      padding:26px;
      overflow:hidden;
      position:relative;
    }
    .article-hero-card::after{
      content:"";
      position:absolute;
      inset:auto -60px -70px auto;
      width:240px;
      height:240px;
      background:radial-gradient(circle, rgba(255,122,26,.14), transparent 72%);
      pointer-events:none;
    }
    .crumb{
      display:flex;
      align-items:center;
      gap:.55rem;
      flex-wrap:wrap;
      color:var(--muted);
      font-size:.92rem;
      margin-bottom:14px;
    }
    .crumb a{color:#d7dde6}
    .crumb span{opacity:.55}
    .article-hero h1{
      margin:0 0 14px;
      font-size:clamp(2rem, 4vw, 3.45rem);
      line-height:1.12;
      letter-spacing:-.04em;
      color:#fff;
    }
    .article-summary{
      margin:0;
      color:var(--soft);
      font-size:1.03rem;
      line-height:1.85;
      max-width:900px;
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      margin-top:18px;
    }
    .meta-chip{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.48rem .78rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:#eef2f7;
      font-size:.86rem;
      font-weight:700;
    }
    .meta-chip .mini{
      width:.48rem;
      height:.48rem;
      border-radius:50%;
      background:var(--secondary);
      box-shadow:0 0 0 4px rgba(36,209,181,.12);
    }
    .meta-chip.orange .mini{background:var(--primary); box-shadow:0 0 0 4px rgba(255,122,26,.12)}
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0, 1fr) 340px;
      gap:24px;
      align-items:start;
    }
    .article-card{
      padding:28px;
    }
    .article-content{
      max-width:760px;
    }
    .article-content h2,
    .article-content h3,
    .article-content h4{
      color:#fff;
      line-height:1.25;
      letter-spacing:-.02em;
      margin:1.6em 0 .7em;
    }
    .article-content h2{font-size:1.55rem}
    .article-content h3{font-size:1.28rem}
    .article-content h4{font-size:1.08rem}
    .article-content p{
      margin:0 0 1.02em;
      color:var(--soft);
      font-size:1rem;
      line-height:1.85;
    }
    .article-content a{
      color:#fff;
      text-decoration:underline;
      text-decoration-color:rgba(255,122,26,.45);
      text-underline-offset:3px;
    }
    .article-content a:hover{color:#fff; text-decoration-color:rgba(36,209,181,.65)}
    .article-content ul,
    .article-content ol{
      margin:0 0 1.08em 1.25em;
      color:var(--soft);
      padding-left:1rem;
    }
    .article-content li{margin:.34rem 0}
    .article-content blockquote{
      margin:1.2em 0;
      padding:1rem 1.1rem;
      border-left:3px solid var(--primary);
      background:rgba(255,255,255,.04);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      color:#f2ece1;
    }
    .article-content hr{
      border:0;
      border-top:1px solid rgba(255,255,255,.10);
      margin:1.5rem 0;
    }
    .article-content code{
      background:rgba(255,255,255,.08);
      color:#fff;
      padding:.18rem .42rem;
      border-radius:8px;
      border:1px solid rgba(255,255,255,.08);
    }
    .article-content pre{
      padding:1rem 1.1rem;
      border-radius:var(--radius-md);
      background:#0b0f14;
      border:1px solid rgba(255,255,255,.10);
      overflow:auto;
      color:#e7eaf1;
    }
    .article-content img{
      border-radius:var(--radius-lg);
      margin:1.2rem 0;
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 12px 30px rgba(0,0,0,.28);
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:1.2rem 0;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.03);
    }
    .article-content th,
    .article-content td{
      padding:.82rem .95rem;
      border-bottom:1px solid rgba(255,255,255,.08);
      color:var(--soft);
      vertical-align:top;
    }
    .article-content th{
      color:#fff;
      background:rgba(255,255,255,.05);
      font-weight:800;
    }
    .article-content tr:last-child td{border-bottom:0}
    .article-content .wp-caption,
    .article-content figure{
      margin:1.2rem 0;
    }
    .article-content .wp-caption-text,
    .article-content figcaption{
      color:var(--muted);
      font-size:.92rem;
      margin-top:.45rem;
    }
    .article-sign{
      margin-top:1.6rem;
      padding-top:1.25rem;
      border-top:1px dashed rgba(255,255,255,.10);
      color:var(--muted);
      font-size:.95rem;
    }
    .side-column{
      position:relative;
    }
    .side-card{
      padding:22px;
      margin-bottom:18px;
      position:sticky;
      top:118px;
    }
    .side-card + .side-card{position:static}
    .side-card .card-title{
      font-size:1rem;
      font-weight:800;
      color:#fff;
      margin:0 0 12px;
    }
    .info-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:.7rem;
    }
    .info-list li{
      display:flex;
      align-items:flex-start;
      gap:.65rem;
      padding:.72rem .78rem;
      border-radius:var(--radius-md);
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
      color:var(--soft);
    }
    .info-list .badge-dot{
      width:.6rem;
      height:.6rem;
      border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--secondary));
      margin-top:.42rem;
      flex:0 0 auto;
      box-shadow:0 0 0 4px rgba(255,122,26,.10);
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
    }
    .tag-pill{
      padding:.46rem .74rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:#e8edf6;
      font-size:.86rem;
      font-weight:700;
    }
    .quick-links{
      display:grid;
      gap:.72rem;
    }
    .quick-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:.75rem;
      padding:.85rem .95rem;
      border-radius:var(--radius-md);
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      color:#fff;
      font-weight:700;
    }
    .quick-link span{color:var(--muted); font-size:.9rem; font-weight:600}
    .quick-link:hover{transform:translateY(-1px); border-color:rgba(255,122,26,.22); box-shadow:0 14px 30px rgba(0,0,0,.22)}
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:18px;
    }
    .related-card{
      padding:20px;
      min-height:166px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .related-card h3{
      font-size:1.02rem;
      margin:0 0 .55rem;
      color:#fff;
    }
    .related-card p{
      margin:0;
      color:var(--muted);
      line-height:1.78;
      font-size:.95rem;
    }
    .related-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      margin-top:1rem;
    }
    .related-tag{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.34rem .62rem;
      border-radius:999px;
      background:rgba(36,209,181,.10);
      border:1px solid rgba(36,209,181,.20);
      color:#d8fffa;
      font-size:.82rem;
      font-weight:700;
      white-space:nowrap;
    }
    .faq-grid{
      display:grid;
      gap:14px;
    }
    .faq-card{
      padding:22px;
    }
    .accordion{
      --bs-accordion-bg:transparent;
      --bs-accordion-border-color:rgba(255,255,255,.08);
      --bs-accordion-btn-bg:rgba(255,255,255,.03);
      --bs-accordion-active-bg:rgba(255,122,26,.08);
      --bs-accordion-active-color:#fff;
      --bs-accordion-btn-color:#fff;
      --bs-accordion-color:var(--soft);
      --bs-accordion-btn-focus-box-shadow:0 0 0 .2rem rgba(255,122,26,.15);
      --bs-accordion-border-radius:18px;
      --bs-accordion-inner-border-radius:18px;
      --bs-accordion-btn-icon-width:1rem;
    }
    .accordion-item{
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08)!important;
      border-radius:18px!important;
      overflow:hidden;
    }
    .accordion-item + .accordion-item{margin-top:12px}
    .accordion-button{
      padding:1rem 1.1rem;
      font-weight:800;
      border-radius:0!important;
      background:transparent;
    }
    .accordion-button:not(.collapsed){
      box-shadow:none;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .accordion-button::after{filter:invert(1) brightness(1.8); opacity:.85}
    .accordion-body{
      padding:1rem 1.1rem 1.1rem;
      color:var(--soft);
      line-height:1.85;
    }
    .cta-panel{
      padding:28px;
      overflow:hidden;
      position:relative;
    }
    .cta-panel::after{
      content:"";
      position:absolute;
      width:240px;
      height:240px;
      right:-80px;
      bottom:-95px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(36,209,181,.12), transparent 70%);
      pointer-events:none;
    }
    .cta-panel h2{
      margin:0 0 .55rem;
      font-size:clamp(1.45rem, 2.8vw, 2.2rem);
      line-height:1.18;
      color:#fff;
    }
    .cta-panel p{
      margin:0;
      color:var(--muted);
      max-width:760px;
      line-height:1.85;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:.8rem;
      margin-top:1.1rem;
    }
    .site-footer{
      padding:28px 0 30px;
      border-top:1px solid rgba(255,255,255,.08);
      background:rgba(9,11,15,.82);
      backdrop-filter:saturate(120%) blur(10px);
      position:relative;
      z-index:1;
    }
    .footer-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:1.2rem;
      padding-bottom:18px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .footer-brand{
      display:flex;
      align-items:flex-start;
      gap:.9rem;
      min-width:0;
    }
    .footer-brand .name{
      font-weight:900;
      color:#fff;
      font-size:1.05rem;
      margin-bottom:.2rem;
    }
    .footer-brand .desc{
      display:block;
      color:var(--muted);
      font-size:.94rem;
      line-height:1.6;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:.7rem 1rem;
      justify-content:flex-end;
    }
    .footer-links a{
      color:#d7dde6;
      font-weight:700;
      font-size:.92rem;
      padding:.2rem 0;
    }
    .footer-links a:hover{color:#fff}
    .footer-bottom{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      padding-top:16px;
      color:var(--muted);
      font-size:.92rem;
      flex-wrap:wrap;
    }
    .empty-state{
      padding:42px 22px;
      text-align:center;
    }
    .empty-state h2{
      margin:0 0 .6rem;
      color:#fff;
      font-size:1.8rem;
    }
    .empty-state p{
      margin:0 0 1.15rem;
      color:var(--muted);
    }
    .empty-card{
      padding:26px;
      border-radius:var(--radius-xl);
      background:var(--surface);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .muted-line{color:var(--muted)}
    .divider{
      width:100%;
      height:1px;
      background:rgba(255,255,255,.08);
      margin:1.25rem 0;
    }
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.38rem .65rem;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:#e6ebf2;
      font-size:.82rem;
      font-weight:700;
    }
    .sticky-note{
      color:var(--muted);
      font-size:.92rem;
      line-height:1.75;
    }
    .article-actions{
      display:flex;
      flex-wrap:wrap;
      gap:.7rem;
      margin-top:1.15rem;
    }
    .lead-kicker{
      margin-bottom:.9rem;
    }
    .lead-kicker .badge-soft{margin-right:.5rem}
    .article-chip-row{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      margin-top:14px;
    }
    .article-chip{
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      padding:.42rem .72rem;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.09);
      font-size:.85rem;
      color:#eef2f7;
      font-weight:700;
    }
    .article-chip i{
      width:.45rem;
      height:.45rem;
      border-radius:50%;
      background:var(--secondary);
      display:inline-block;
      box-shadow:0 0 0 4px rgba(36,209,181,.10);
    }
    .article-chip.orange i{background:var(--primary); box-shadow:0 0 0 4px rgba(255,122,26,.10)}
    .article-header-divider{
      margin:1.1rem 0 0;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .content-note{
      padding:14px 16px;
      border-radius:var(--radius-md);
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      color:var(--muted);
      font-size:.93rem;
      line-height:1.7;
    }
    @media (max-width: 1199.98px){
      .article-layout{grid-template-columns:1fr 300px}
    }
    @media (max-width: 991.98px){
      .topbar-inner{gap:.7rem}
      .topbar-center{display:none}
      .navbar-collapse{
        padding:1rem 0 .2rem;
        margin-top:.9rem;
        border-top:1px solid rgba(255,255,255,.08);
      }
      .navbar-nav{
        align-items:stretch;
        gap:.25rem;
      }
      .nav-link{width:100%}
      .article-layout{grid-template-columns:1fr}
      .side-card{position:static}
      .related-grid{grid-template-columns:1fr}
      .footer-top,.footer-bottom{flex-direction:column; align-items:flex-start}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width: 767.98px){
      .section{padding:60px 0}
      .article-hero{padding:22px 0 16px}
      .article-hero-card,
      .article-card,
      .side-card,
      .cta-panel,
      .faq-card,
      .related-card{
        border-radius:24px;
      }
      .article-hero-card,
      .article-card,
      .side-card,
      .cta-panel{padding:20px}
      .article-hero h1{font-size:clamp(1.8rem, 7vw, 2.45rem)}
      .article-summary{font-size:.98rem}
      .hero-meta{gap:.42rem}
      .meta-chip{padding:.4rem .68rem; font-size:.82rem}
      .footer-brand{align-items:center}
    }
    @media (max-width: 575.98px){
      .topbar-inner{padding:.55rem 0}
      .domain-mark{padding:.28rem .62rem; font-size:.86rem}
      .navbar{padding:.84rem 0}
      .brand-icon{width:42px; height:42px; border-radius:14px}
      .brand-title{font-size:1rem}
      .brand-sub{font-size:.8rem}
      .btn{width:auto}
      .article-actions,.cta-actions{flex-direction:column}
      .article-actions .btn,.cta-actions .btn{width:100%}
      .related-grid{gap:14px}
    }

/* 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}