/* roulang page: index */
:root{
      --bg-0:#050B14;
      --bg-1:#07111F;
      --bg-2:#081525;
      --panel:rgba(255,255,255,.062);
      --panel-strong:rgba(255,255,255,.092);
      --line:rgba(255,255,255,.11);
      --line-strong:rgba(53,215,255,.42);
      --brand:#35D7FF;
      --brand-2:#22C7E8;
      --violet:#8B5CF6;
      --violet-2:#6D5DFB;
      --gold:#F4C95D;
      --text:#EAF2FF;
      --muted:#9FB0C8;
      --weak:#6F7F99;
      --danger-dot:#FF4655;
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --shadow:0 24px 80px rgba(0,0,0,.38);
      --glow:0 0 34px rgba(53,215,255,.18);
      --max:1220px;
      --font:PingFang SC,Microsoft YaHei,HarmonyOS Sans,Noto Sans SC,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-width:320px;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 15% 6%, rgba(53,215,255,.16), transparent 30%),
        radial-gradient(circle at 78% 14%, rgba(139,92,246,.16), transparent 28%),
        radial-gradient(circle at 55% 78%, rgba(34,199,232,.08), transparent 34%),
        linear-gradient(180deg,var(--bg-0),var(--bg-1) 45%,#050914);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:54px 54px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.78),rgba(0,0,0,.18));
    }
    a{color:inherit;text-decoration:none;transition:.22s ease}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:10px}
    .site-container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
    .section{padding:108px 0;position:relative}
    .section-compact{padding:82px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:7px 12px;
      border:1px solid rgba(53,215,255,.22);
      border-radius:999px;
      background:rgba(53,215,255,.09);
      color:#B8F3FF;
      font-size:14px;
      font-weight:600;
      letter-spacing:.02em;
    }
    .eyebrow:before{
      content:"";
      width:7px;height:7px;
      border-radius:999px;
      background:var(--danger-dot);
      box-shadow:0 0 16px rgba(255,70,85,.65);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(2.25rem,5vw,4rem);
      line-height:1.08;
      letter-spacing:-.045em;
      font-weight:800;
      margin-bottom:24px;
    }
    h2{
      font-size:clamp(1.85rem,3.4vw,2.6rem);
      line-height:1.18;
      letter-spacing:-.035em;
      font-weight:800;
      margin-bottom:18px;
    }
    h3{font-size:1.35rem;line-height:1.35;font-weight:750;margin-bottom:12px}
    .lead{font-size:18px;color:var(--muted);max-width:720px;line-height:1.9}
    .muted{color:var(--muted)}
    .weak{color:var(--weak)}
    .text-gradient{
      background:linear-gradient(90deg,#fff,var(--brand) 48%,#C4B5FD);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      border-bottom:1px solid rgba(255,255,255,.08);
      background:rgba(5,11,20,.72);
      backdrop-filter:blur(18px);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      position:relative;
      width:38px;height:38px;
      border-radius:14px;
      background:linear-gradient(145deg,rgba(53,215,255,.24),rgba(139,92,246,.16));
      border:1px solid rgba(255,255,255,.16);
      box-shadow:var(--glow);
      flex:0 0 auto;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      left:10px;top:8px;
      width:17px;height:22px;
      border:2px solid rgba(234,242,255,.82);
      border-left-color:var(--brand);
      border-radius:4px 9px 9px 4px;
      transform:skewY(-8deg);
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      right:8px;bottom:8px;
      width:7px;height:7px;
      border-radius:999px;
      background:var(--brand);
      box-shadow:0 0 18px var(--brand);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      min-width:0;
    }
    .brand-title{
      font-weight:800;
      font-size:15px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:430px;
    }
    .brand-sub{font-size:12px;color:var(--weak);margin-top:4px}
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      margin-left:auto;
    }
    .nav-link{
      position:relative;
      padding:10px 14px;
      color:var(--muted);
      font-size:14px;
      font-weight:650;
      border-radius:999px;
    }
    .nav-link:hover,.nav-link.active{
      color:var(--text);
      background:rgba(255,255,255,.06);
    }
    .nav-link.active:after{
      content:"";
      position:absolute;
      left:18px;right:18px;bottom:5px;
      height:2px;border-radius:999px;
      background:linear-gradient(90deg,var(--brand),var(--violet));
    }
    .nav-cta{margin-left:6px}
    .menu-toggle{
      display:none;
      width:42px;height:42px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.06);
      border-radius:14px;
      color:var(--text);
    }
    .menu-toggle span{
      display:block;
      width:18px;height:2px;
      background:var(--text);
      margin:5px auto;
      border-radius:999px;
      transition:.2s ease;
    }
    .mobile-panel{
      display:none;
      padding:0 0 18px;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .mobile-panel.open{display:block}
    .mobile-panel a{display:block;padding:14px 2px;color:var(--muted);font-weight:650}

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:46px;
      padding:12px 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:750;
      line-height:1;
      transition:.22s ease;
      white-space:nowrap;
    }
    .btn-primary{
      color:#06111E;
      background:linear-gradient(135deg,var(--brand),#7EE7FF 52%,#C4B5FD);
      box-shadow:0 12px 42px rgba(53,215,255,.22);
    }
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.16);
      backdrop-filter:blur(12px);
    }
    .btn:hover{
      transform:translateY(-2px);
      box-shadow:0 16px 46px rgba(53,215,255,.24);
    }
    .btn-secondary:hover{
      border-color:rgba(53,215,255,.45);
      background:rgba(53,215,255,.09);
    }
    .link-more{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#BDF4FF;
      font-weight:750;
      font-size:14px;
    }
    .link-more span{transition:.2s ease}
    .link-more:hover span{transform:translateX(4px)}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 0}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 11px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.11);
      background:rgba(255,255,255,.055);
      color:#CFEAFF;
      font-size:13px;
      font-weight:650;
    }
    .badge.blue{background:rgba(53,215,255,.12);color:#BDF4FF;border-color:rgba(53,215,255,.18)}
    .badge.purple{background:rgba(139,92,246,.13);color:#D8CCFF;border-color:rgba(139,92,246,.22)}
    .badge.gold{background:rgba(244,201,93,.13);color:#FFE8A3;border-color:rgba(244,201,93,.2)}
    .glass-card{
      position:relative;
      overflow:hidden;
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.042));
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
      transition:.24s ease;
    }
    .glass-card:before{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      background:radial-gradient(circle at 15% 0%, rgba(53,215,255,.12), transparent 35%);
      opacity:.8;
    }
    .glass-card:hover{
      transform:translateY(-4px);
      border-color:rgba(53,215,255,.38);
      box-shadow:0 28px 90px rgba(0,0,0,.42),0 0 36px rgba(53,215,255,.1);
    }

    .hero{
      padding:92px 0 76px;
      min-height:720px;
      display:flex;
      align-items:center;
    }
    .hero .grid-x{align-items:center}
    .hero-copy{position:relative;z-index:2}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
    .hero-note{
      margin-top:22px;
      color:var(--weak);
      font-size:14px;
    }
    .dashboard{
      padding:24px;
      border-radius:32px;
      min-height:520px;
    }
    .dash-top{
      position:relative;
      z-index:1;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:16px;
      margin-bottom:22px;
    }
    .status-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(53,215,255,.11);
      color:#C9F8FF;
      font-size:13px;
      font-weight:700;
    }
    .status-pill:before{
      content:"";
      width:8px;height:8px;border-radius:999px;
      background:var(--brand);
      box-shadow:0 0 18px var(--brand);
    }
    .dash-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:14px;
    }
    .dash-tile{
      border:1px solid rgba(255,255,255,.1);
      background:rgba(4,11,22,.56);
      border-radius:20px;
      padding:18px;
    }
    .dash-tile.large{grid-row:span 2;min-height:238px}
    .metric{
      font-size:34px;
      font-weight:850;
      letter-spacing:-.04em;
      color:var(--text);
      margin:8px 0 3px;
    }
    .metric small{font-size:15px;color:var(--brand);letter-spacing:0}
    .tile-label{color:var(--weak);font-size:13px;font-weight:650}
    .zone-map{
      margin-top:20px;
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:10px;
    }
    .zone{
      min-height:58px;
      border-radius:16px;
      border:1px solid rgba(53,215,255,.13);
      background:linear-gradient(135deg,rgba(53,215,255,.09),rgba(139,92,246,.06));
      padding:12px;
      color:#CFEAFF;
      font-size:13px;
      font-weight:700;
    }
    .flow-lines{
      position:relative;
      z-index:1;
      margin-top:16px;
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.09);
    }
    .flow-line{
      height:8px;
      border-radius:999px;
      margin:12px 0;
      background:linear-gradient(90deg,rgba(53,215,255,.75),rgba(139,92,246,.4),rgba(255,255,255,.08));
    }
    .flow-line:nth-child(2){width:78%}
    .flow-line:nth-child(3){width:58%}

    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:28px;
      margin-bottom:42px;
    }
    .section-head .lead{margin-bottom:0}
    .timeline{
      position:relative;
      padding-left:24px;
    }
    .timeline:before{
      content:"";
      position:absolute;
      top:10px;bottom:10px;left:4px;
      width:1px;
      background:linear-gradient(var(--brand),rgba(139,92,246,.3),transparent);
    }
    .pain-card{
      position:relative;
      padding:24px 24px 24px 28px;
      margin-bottom:18px;
    }
    .pain-card:after{
      content:attr(data-index);
      position:absolute;
      left:-25px;top:24px;
      width:48px;height:28px;
      display:grid;place-items:center;
      border-radius:999px;
      background:#09182A;
      border:1px solid rgba(53,215,255,.28);
      color:var(--brand);
      font-size:12px;
      font-weight:850;
      box-shadow:0 0 20px rgba(53,215,255,.14);
    }
    .summary-card{padding:30px;position:sticky;top:104px}
    .summary-list{list-style:none;margin:24px 0 0;padding:0}
    .summary-list li{
      display:flex;
      align-items:flex-start;
      gap:12px;
      padding:13px 0;
      border-bottom:1px solid rgba(255,255,255,.08);
      color:var(--muted);
    }
    .summary-list li:last-child{border-bottom:0}
    .summary-list li:before{
      content:"";
      width:8px;height:8px;margin-top:9px;
      border-radius:999px;
      background:var(--brand);
      box-shadow:0 0 14px var(--brand);
      flex:0 0 auto;
    }

    .solution-wrap{
      display:grid;
      grid-template-columns:1fr 1.55fr 1fr;
      gap:18px;
      align-items:center;
    }
    .cap-stack{display:grid;gap:14px}
    .cap-pill{
      padding:16px 18px;
      border-radius:18px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.1);
      color:#DDEBFF;
      font-weight:700;
    }
    .solution-panel{padding:30px;min-height:440px}
    .publish-flow{
      position:relative;
      z-index:1;
      margin-top:26px;
      display:grid;
      gap:12px;
    }
    .flow-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:14px;
      align-items:center;
      padding:15px;
      border:1px solid rgba(255,255,255,.1);
      border-radius:18px;
      background:rgba(5,12,24,.54);
    }
    .flow-dot{
      width:12px;height:12px;border-radius:999px;
      background:var(--brand);
      box-shadow:0 0 18px var(--brand);
    }
    .flow-meta{font-size:13px;color:var(--weak)}

    .result-bar{
      padding:18px;
      border-radius:28px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.09);
    }
    .result-card{
      padding:26px;
      min-height:186px;
    }
    .result-number{
      font-size:42px;
      line-height:1;
      font-weight:900;
      letter-spacing:-.05em;
      margin-bottom:12px;
      color:#F5FBFF;
    }
    .result-number em{font-style:normal;color:var(--brand)}

    .latest-layout{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:20px;
      align-items:stretch;
    }
    .post-feature{
      padding:30px;
      min-height:380px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .post-feature h3{font-size:1.75rem;line-height:1.28;margin-top:18px}
    .post-list{display:grid;gap:14px}
    .post-item{
      display:block;
      padding:20px;
      border-radius:22px;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(255,255,255,.052);
      transition:.22s ease;
    }
    .post-item:hover{
      transform:translateY(-3px);
      border-color:rgba(53,215,255,.38);
      background:rgba(53,215,255,.07);
    }
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      color:var(--weak);
      font-size:13px;
      margin-bottom:12px;
    }
    .post-title{font-weight:800;font-size:18px;line-height:1.42;color:var(--text);margin-bottom:8px}
    .post-desc{color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:0}
    .empty-state{
      padding:42px 26px;
      text-align:center;
      border-radius:26px;
      border:1px dashed rgba(53,215,255,.32);
      background:rgba(53,215,255,.055);
    }
    .empty-icon{
      width:54px;height:54px;
      margin:0 auto 16px;
      border-radius:18px;
      border:1px solid rgba(53,215,255,.3);
      background:rgba(53,215,255,.12);
      box-shadow:var(--glow);
      position:relative;
    }
    .empty-icon:before{
      content:"";
      position:absolute;
      inset:13px 17px;
      border-left:3px solid var(--brand);
      border-top:3px solid rgba(255,255,255,.78);
      border-bottom:3px solid rgba(255,255,255,.78);
      border-radius:3px;
    }

    .testimonial-card{
      padding:28px;
      min-height:240px;
    }
    .quote-mark{
      font-size:52px;
      line-height:1;
      color:rgba(53,215,255,.28);
      font-weight:900;
      margin-bottom:8px;
    }
    .role{
      display:flex;
      align-items:center;
      gap:12px;
      margin-top:24px;
    }
    .avatar{
      width:42px;height:42px;border-radius:999px;
      background:linear-gradient(135deg,var(--brand),var(--violet));
      box-shadow:0 0 28px rgba(53,215,255,.18);
    }
    .role strong{display:block}
    .role span{display:block;color:var(--weak);font-size:13px}

    .faq-wrap{max-width:930px;margin:0 auto}
    .accordion{
      background:transparent;
      border:0;
    }
    .accordion-item{margin-bottom:12px}
    .accordion-title{
      border:1px solid rgba(255,255,255,.1)!important;
      background:rgba(255,255,255,.055)!important;
      color:var(--text)!important;
      border-radius:18px!important;
      padding:20px 56px 20px 20px!important;
      font-size:16px;
      font-weight:800;
    }
    .accordion-title:hover,.accordion-title:focus{
      background:rgba(53,215,255,.08)!important;
      border-color:rgba(53,215,255,.32)!important;
    }
    .accordion-content{
      border:1px solid rgba(53,215,255,.18)!important;
      border-top:0!important;
      background:rgba(255,255,255,.04)!important;
      color:var(--muted)!important;
      border-radius:0 0 18px 18px!important;
      line-height:1.9;
    }
    .accordion-title:before{color:var(--brand);font-size:24px;margin-top:-12px}

    .cta-panel{
      position:relative;
      overflow:hidden;
      padding:46px;
      border-radius:32px;
      border:1px solid rgba(53,215,255,.2);
      background:
        radial-gradient(circle at 15% 20%,rgba(53,215,255,.18),transparent 34%),
        radial-gradient(circle at 85% 35%,rgba(139,92,246,.18),transparent 32%),
        rgba(255,255,255,.058);
      box-shadow:var(--shadow),var(--glow);
    }
    .cta-panel:after{
      content:"";
      position:absolute;
      inset:0;
      background-image:linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
      background-size:38px 38px;
      opacity:.32;
      pointer-events:none;
    }
    .cta-content{position:relative;z-index:1}
    .cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}

    .site-footer{
      padding:56px 0 34px;
      background:#040811;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-top{
      display:flex;
      justify-content:space-between;
      gap:36px;
      padding-bottom:32px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .footer-brand{max-width:520px}
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 18px;
      align-content:flex-start;
      justify-content:flex-end;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:650;
      font-size:14px;
    }
    .footer-links a:hover{color:var(--brand)}
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
      padding-top:24px;
      color:var(--weak);
      font-size:13px;
    }

    @media (max-width:1024px){
      .section{padding:82px 0}
      .hero{padding:72px 0 62px;min-height:auto}
      .dashboard{margin-top:34px;min-height:auto}
      .solution-wrap{grid-template-columns:1fr}
      .cap-stack{grid-template-columns:repeat(2,1fr)}
      .latest-layout{grid-template-columns:1fr}
      .summary-card{position:relative;top:auto}
      .brand-title{max-width:310px}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,var(--max))}
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:block}
      .brand-title{max-width:230px}
      .brand-sub{display:none}
      .nav-wrap{min-height:68px}
      .section-head{display:block}
      .section-head .lead{margin-top:10px}
      .dash-grid{grid-template-columns:1fr}
      .dash-tile.large{grid-row:auto}
      .hero-actions,.cta-actions{flex-direction:column;align-items:stretch}
      .btn{width:100%}
      .cap-stack{grid-template-columns:1fr}
      .footer-top{display:block}
      .footer-links{justify-content:flex-start;margin-top:26px}
      .cta-panel{padding:32px 22px}
    }
    @media (max-width:520px){
      h1{font-size:2.18rem}
      .section{padding:64px 0}
      .hero{padding:54px 0}
      .dashboard,.post-feature,.solution-panel,.testimonial-card,.summary-card{padding:22px}
      .zone-map{grid-template-columns:1fr}
      .timeline{padding-left:16px}
      .pain-card{padding:22px 18px 22px 24px}
      .pain-card:after{left:-21px}
      .result-number{font-size:34px}
      .brand-title{max-width:185px;font-size:13px}
    }

/* roulang page: article */
:root{
      --bg-0:#07111F;
      --bg-1:#081525;
      --bg-2:#0B1020;
      --panel:rgba(255,255,255,.06);
      --panel-strong:rgba(255,255,255,.09);
      --border:rgba(255,255,255,.10);
      --border-strong:rgba(53,215,255,.34);
      --text:#EAF2FF;
      --muted:#9FB0C8;
      --weak:#6F7F99;
      --primary:#35D7FF;
      --primary-2:#22C7E8;
      --violet:#8B5CF6;
      --violet-2:#6D5DFB;
      --amber:#F4C95D;
      --danger:#ff4d6d;
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --shadow:0 24px 80px rgba(0,0,0,.38);
      --glow:0 0 34px rgba(53,215,255,.22);
      --glow-violet:0 0 46px rgba(139,92,246,.18);
      --container:1180px;
      --font:PingFang SC,Microsoft YaHei,HarmonyOS Sans,Noto Sans SC,Arial,sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-width:320px;
      font-family:var(--font);
      color:var(--text);
      line-height:1.75;
      background:
        radial-gradient(circle at 12% 8%, rgba(53,215,255,.14), transparent 34%),
        radial-gradient(circle at 84% 18%, rgba(139,92,246,.16), transparent 35%),
        radial-gradient(circle at 50% 92%, rgba(34,199,232,.08), transparent 38%),
        linear-gradient(180deg,var(--bg-2),var(--bg-0) 45%,#050B15);
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-2;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:56px 56px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.22), rgba(0,0,0,.75));
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      z-index:-1;
      pointer-events:none;
      background:
        linear-gradient(115deg, transparent 0 38%, rgba(53,215,255,.055) 39%, transparent 41% 100%),
        linear-gradient(70deg, transparent 0 57%, rgba(139,92,246,.052) 58%, transparent 60% 100%);
      opacity:.72;
    }

    a{color:inherit;text-decoration:none;transition:color .22s ease, border-color .22s ease, transform .22s ease, background .22s ease}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(53,215,255,.28);color:#fff}
    :focus-visible{outline:2px solid rgba(53,215,255,.9);outline-offset:4px;border-radius:12px}

    .site-container{
      width:min(calc(100% - 40px), var(--container));
      margin-inline:auto;
    }
    .muted{color:var(--muted)}
    .weak{color:var(--weak)}
    .section{
      position:relative;
      padding:84px 0;
    }
    .section.compact{padding:54px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:8px 13px;
      border:1px solid rgba(53,215,255,.24);
      border-radius:999px;
      color:#BFF5FF;
      background:rgba(53,215,255,.10);
      font-size:14px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 16px rgba(53,215,255,.9);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      background:rgba(7,17,31,.72);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .nav-shell{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      position:relative;
      width:38px;
      height:38px;
      flex:0 0 38px;
      border-radius:14px;
      background:
        linear-gradient(135deg,rgba(53,215,255,.95),rgba(139,92,246,.76)),
        radial-gradient(circle at 70% 18%,#fff,transparent 22%);
      box-shadow:0 0 24px rgba(53,215,255,.28);
      overflow:hidden;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      inset:9px 11px;
      border-left:2px solid rgba(255,255,255,.76);
      border-bottom:2px solid rgba(255,255,255,.58);
      transform:skewY(-14deg);
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      right:8px;
      top:8px;
      width:6px;
      height:6px;
      border-radius:50%;
      background:#fff;
      box-shadow:0 0 14px #fff;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.18;
      min-width:0;
    }
    .brand-title{
      font-weight:800;
      font-size:15px;
      color:var(--text);
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:360px;
    }
    .brand-sub{
      margin-top:3px;
      font-size:12px;
      color:var(--muted);
      letter-spacing:.08em;
    }
    .nav-right{
      display:flex;
      align-items:center;
      gap:18px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:0 15px;
      border-radius:999px;
      color:var(--muted);
      font-size:15px;
      font-weight:700;
    }
    .nav-link:after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:5px;
      height:2px;
      border-radius:4px;
      background:linear-gradient(90deg,var(--primary),var(--violet));
      transform:scaleX(0);
      transform-origin:left;
      transition:transform .22s ease;
    }
    .nav-link:hover,.nav-link.active{
      color:var(--text);
      background:rgba(255,255,255,.045);
    }
    .nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
    .nav-cta{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:40px;
      padding:0 17px;
      border-radius:999px;
      color:#06111e;
      font-weight:800;
      background:linear-gradient(135deg,var(--primary),#7EE7FF);
      box-shadow:0 0 22px rgba(53,215,255,.22);
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(53,215,255,.36)}
    .menu-toggle{
      display:none;
      width:42px;
      height:42px;
      border:1px solid var(--border);
      border-radius:14px;
      background:rgba(255,255,255,.06);
      color:var(--text);
    }
    .menu-toggle span{
      display:block;
      width:18px;
      height:2px;
      margin:4px auto;
      background:currentColor;
      border-radius:3px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 22px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
    }
    .btn-primary{
      color:#06111e;
      background:linear-gradient(135deg,var(--primary),#8EF0FF);
      box-shadow:0 10px 32px rgba(53,215,255,.22);
    }
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.14);
    }
    .btn:hover{
      transform:translateY(-2px);
    }
    .btn-primary:hover{box-shadow:0 16px 44px rgba(53,215,255,.32)}
    .btn-secondary:hover{border-color:rgba(53,215,255,.48);background:rgba(53,215,255,.09)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#BFF5FF;
      font-weight:800;
    }
    .text-link .arrow{transition:transform .22s ease}
    .text-link:hover .arrow{transform:translateX(4px)}

    .article-hero{
      padding:58px 0 32px;
      position:relative;
    }
    .article-hero:before{
      content:"";
      position:absolute;
      left:50%;
      top:10px;
      width:min(920px,86vw);
      height:300px;
      transform:translateX(-50%);
      background:radial-gradient(circle, rgba(53,215,255,.13), transparent 64%);
      filter:blur(10px);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      color:var(--weak);
      font-size:14px;
      margin:0 0 24px;
    }
    .breadcrumb a{
      color:var(--muted);
      border-bottom:1px solid transparent;
    }
    .breadcrumb a:hover{color:var(--primary);border-bottom-color:rgba(53,215,255,.55)}
    .crumb-sep{color:rgba(255,255,255,.22)}
    .article-head-card{
      position:relative;
      overflow:hidden;
      padding:34px;
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      background:
        linear-gradient(135deg,rgba(255,255,255,.075),rgba(255,255,255,.035)),
        radial-gradient(circle at 88% 20%,rgba(139,92,246,.18),transparent 38%),
        radial-gradient(circle at 12% 16%,rgba(53,215,255,.15),transparent 34%);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
    }
    .article-head-card:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,transparent,rgba(53,215,255,.08),transparent);
      transform:translateX(-80%);
      opacity:.55;
    }
    .article-kicker{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(53,215,255,.22);
      color:#BFF5FF;
      background:rgba(53,215,255,.10);
      font-size:13px;
      font-weight:800;
    }
    .badge.violet{
      border-color:rgba(139,92,246,.26);
      color:#D9D1FF;
      background:rgba(139,92,246,.12);
    }
    .badge.amber{
      border-color:rgba(244,201,93,.26);
      color:#FFE6A0;
      background:rgba(244,201,93,.10);
    }
    .article-title{
      position:relative;
      margin:0;
      max-width:980px;
      color:var(--text);
      font-size:clamp(34px,5vw,58px);
      line-height:1.12;
      letter-spacing:-.03em;
      font-weight:900;
    }
    .article-summary{
      position:relative;
      max-width:850px;
      margin:22px 0 0;
      color:var(--muted);
      font-size:18px;
      line-height:1.9;
    }
    .article-meta{
      position:relative;
      display:flex;
      flex-wrap:wrap;
      gap:12px 18px;
      margin-top:24px;
      color:var(--weak);
      font-size:14px;
    }
    .meta-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
    }
    .meta-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 12px rgba(53,215,255,.75);
    }

    .reading-layout{
      align-items:flex-start;
    }
    .reading-card{
      position:relative;
      overflow:hidden;
      padding:42px;
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      background:rgba(7,17,31,.72);
      box-shadow:var(--shadow);
      backdrop-filter:blur(16px);
    }
    .reading-card:before{
      content:"";
      position:absolute;
      inset:0 0 auto;
      height:3px;
      background:linear-gradient(90deg,var(--primary),var(--violet),transparent);
      opacity:.72;
    }
    .article-content{
      color:#DDE9FA;
      font-size:17px;
      line-height:1.95;
      word-break:break-word;
    }
    .article-content h2,
    .article-content h3,
    .article-content h4{
      color:var(--text);
      line-height:1.35;
      font-weight:900;
      margin:2.1em 0 .8em;
    }
    .article-content h2{
      position:relative;
      padding-left:16px;
      font-size:30px;
    }
    .article-content h2:before{
      content:"";
      position:absolute;
      left:0;
      top:.18em;
      bottom:.18em;
      width:4px;
      border-radius:4px;
      background:linear-gradient(180deg,var(--primary),var(--violet));
      box-shadow:0 0 14px rgba(53,215,255,.35);
    }
    .article-content h3{font-size:24px}
    .article-content h4{font-size:20px}
    .article-content p{margin:0 0 1.18em}
    .article-content a{
      color:#BFF5FF;
      border-bottom:1px solid rgba(53,215,255,.38);
    }
    .article-content a:hover{color:#fff;border-bottom-color:var(--primary)}
    .article-content ul,
    .article-content ol{
      margin:1.2em 0 1.4em;
      padding-left:1.35em;
    }
    .article-content li{margin:.48em 0}
    .article-content blockquote{
      margin:1.7em 0;
      padding:18px 20px;
      border-left:4px solid var(--primary);
      border-radius:0 18px 18px 0;
      color:#CFE7F3;
      background:rgba(53,215,255,.08);
    }
    .article-content img{
      max-width:100%;
      margin:1.6em auto;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 20px 60px rgba(0,0,0,.28);
    }
    .article-content table{
      width:100%;
      border-collapse:collapse;
      margin:1.7em 0;
      display:block;
      overflow-x:auto;
      border:1px solid rgba(255,255,255,.1);
      border-radius:16px;
    }
    .article-content th,
    .article-content td{
      padding:13px 15px;
      border-bottom:1px solid rgba(255,255,255,.08);
      min-width:140px;
    }
    .article-content th{
      color:#DFF9FF;
      background:rgba(53,215,255,.11);
      font-weight:800;
    }
    .article-content code{
      padding:.16em .42em;
      border-radius:8px;
      color:#CFF8FF;
      background:rgba(53,215,255,.12);
    }
    .empty-state{
      display:flex;
      flex-direction:column;
      align-items:flex-start;
      gap:16px;
      padding:30px;
      border:1px dashed rgba(53,215,255,.34);
      border-radius:24px;
      background:rgba(53,215,255,.055);
    }
    .empty-icon{
      width:46px;
      height:46px;
      border-radius:17px;
      background:linear-gradient(135deg,rgba(53,215,255,.9),rgba(139,92,246,.8));
      box-shadow:0 0 26px rgba(53,215,255,.24);
    }
    .empty-state h2{
      margin:0;
      font-size:26px;
      color:var(--text);
    }
    .empty-state p{margin:0;color:var(--muted)}

    .side-stack{
      display:flex;
      flex-direction:column;
      gap:18px;
      position:sticky;
      top:98px;
    }
    .side-card{
      position:relative;
      overflow:hidden;
      padding:22px;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.055);
      backdrop-filter:blur(14px);
      box-shadow:0 18px 54px rgba(0,0,0,.24);
      transition:transform .22s ease,border-color .22s ease,background .22s ease;
    }
    .side-card:hover{
      transform:translateY(-3px);
      border-color:rgba(53,215,255,.32);
      background:rgba(53,215,255,.07);
    }
    .side-title{
      display:flex;
      align-items:center;
      gap:9px;
      margin:0 0 12px;
      font-size:18px;
      font-weight:900;
      color:var(--text);
    }
    .side-title:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 12px rgba(53,215,255,.78);
    }
    .reading-tips{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .reading-tips li{
      display:flex;
      gap:10px;
      color:var(--muted);
      font-size:14px;
    }
    .reading-tips li:before{
      content:"";
      width:6px;
      height:6px;
      margin-top:.75em;
      flex:0 0 6px;
      border-radius:50%;
      background:rgba(244,201,93,.9);
    }
    .compact-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .compact-item{
      padding:14px;
      border:1px solid rgba(255,255,255,.08);
      border-radius:16px;
      background:rgba(0,0,0,.12);
    }
    .compact-item strong{
      display:block;
      color:var(--text);
      font-size:15px;
      line-height:1.45;
      margin-bottom:6px;
    }
    .compact-item span{
      color:var(--weak);
      font-size:13px;
    }
    .action-row{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:18px;
    }

    .related-section{
      padding:44px 0 94px;
    }
    .section-heading{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:24px;
    }
    .section-heading h2{
      margin:0;
      font-size:clamp(28px,4vw,40px);
      line-height:1.18;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .section-heading p{
      margin:10px 0 0;
      max-width:680px;
      color:var(--muted);
    }
    .return-panel{
      position:relative;
      overflow:hidden;
      padding:30px;
      border-radius:var(--radius-xl);
      border:1px solid var(--border);
      background:
        radial-gradient(circle at 15% 10%,rgba(53,215,255,.13),transparent 34%),
        radial-gradient(circle at 88% 85%,rgba(139,92,246,.14),transparent 35%),
        rgba(255,255,255,.055);
      box-shadow:var(--shadow);
    }
    .return-panel:after{
      content:"";
      position:absolute;
      right:24px;
      top:24px;
      width:110px;
      height:110px;
      border:1px solid rgba(53,215,255,.18);
      border-radius:32px;
      transform:rotate(12deg);
      opacity:.48;
    }
    .return-panel h3{
      position:relative;
      margin:0 0 10px;
      font-size:25px;
      font-weight:900;
    }
    .return-panel p{
      position:relative;
      max-width:720px;
      margin:0;
      color:var(--muted);
    }

    .site-footer{
      padding:54px 0 30px;
      background:rgba(3,8,16,.72);
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-top{
      display:flex;
      justify-content:space-between;
      gap:38px;
      align-items:flex-start;
    }
    .footer-brand{max-width:560px}
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px 18px;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:700;
      border-bottom:1px solid transparent;
    }
    .footer-links a:hover{
      color:var(--primary);
      border-bottom-color:rgba(53,215,255,.55);
    }
    .copyright{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      color:var(--weak);
      font-size:14px;
    }

    @media (max-width:1024px){
      .brand-title{max-width:300px}
      .reading-card{padding:32px}
      .side-stack{position:static;margin-top:22px}
    }
    @media (max-width:768px){
      .site-container{width:min(calc(100% - 32px), var(--container))}
      .nav-shell{min-height:68px}
      .nav-right{
        position:relative;
        gap:10px;
      }
      .menu-toggle{display:inline-block}
      .nav-links{
        position:absolute;
        right:0;
        top:54px;
        width:min(260px, calc(100vw - 32px));
        padding:12px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        border:1px solid rgba(255,255,255,.10);
        border-radius:20px;
        background:rgba(7,17,31,.95);
        box-shadow:var(--shadow);
        backdrop-filter:blur(18px);
      }
      .nav-links.is-open{display:flex}
      .nav-link{justify-content:flex-start}
      .nav-cta{display:none}
      .brand-title{max-width:220px}
      .article-head-card{padding:26px}
      .article-summary{font-size:16px}
      .section{padding:60px 0}
      .section-heading{align-items:flex-start;flex-direction:column}
      .footer-top{flex-direction:column}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:520px){
      .site-container{width:min(calc(100% - 24px), var(--container))}
      .brand-mark{width:34px;height:34px;flex-basis:34px;border-radius:12px}
      .brand-title{max-width:176px;font-size:13px}
      .brand-sub{font-size:11px}
      .article-hero{padding-top:34px}
      .article-head-card{border-radius:24px;padding:22px}
      .article-title{font-size:33px}
      .article-meta{gap:9px}
      .reading-card{padding:23px;border-radius:24px}
      .article-content{font-size:16px;line-height:1.9}
      .article-content h2{font-size:25px}
      .article-content h3{font-size:21px}
      .btn{width:100%;min-height:48px}
      .action-row{width:100%}
      .return-panel{padding:24px;border-radius:24px}
      .copyright{flex-direction:column}
    }