:root{
      --bg:#fbfbfc;
      --surface:#ffffff;
      --text:#1f2937;
      --muted:#6b7280;
      --border:rgba(17,24,39,.10);
      --shadow:0 10px 30px rgba(17,24,39,.08);
      --shadow-soft:0 6px 18px rgba(17,24,39,.06);
      --primary:#1757ff;
      --primary-2:#0f3fbf;
      --accent:#7c3aed;
      --chip-bg:rgba(23,87,255,.08);
      --chip-border:rgba(23,87,255,.18);
      --radius:16px;
      --radius-sm:12px;
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", sans-serif;
      background:
        radial-gradient(900px 500px at 10% -10%, rgba(23,87,255,.10), transparent 55%),
        radial-gradient(700px 420px at 90% 0%, rgba(124,58,237,.10), transparent 55%),
        linear-gradient(#fcfcfe, var(--bg));
      color:var(--text);
      line-height:1.55;
    }
    .skip-link{
      position:absolute;left:-999px;top:0;
      background:var(--surface);color:var(--text);
      padding:10px 12px;border-radius:10px;box-shadow:var(--shadow-soft);
      z-index:9999;
    }
    .skip-link:focus{left:14px;top:14px}
    .container{
      width:100%;
      max-width:1120px;
      margin:0 auto;
      padding:0 18px;
    }

    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(252,252,254,.72);
      backdrop-filter:saturate(180%) blur(10px);
      border-bottom:1px solid rgba(17,24,39,.06);
    }
    .header-inner{
      display:flex;align-items:center;justify-content:space-between;
      gap:14px;
      padding:12px 0;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:200px}
    .brand-mark{
      width:38px;height:38px;border-radius:12px;
      background:linear-gradient(135deg, rgba(23,87,255,.18), rgba(124,58,237,.18));
      border:1px solid rgba(17,24,39,.08);
      position:relative;
      box-shadow:0 8px 18px rgba(23,87,255,.10);
    }
    .brand-mark:after{
      content:"";
      position:absolute;left:10px;top:10px;width:18px;height:18px;
      border-radius:7px;
      background:linear-gradient(135deg, rgba(23,87,255,.95), rgba(124,58,237,.92));
      opacity:.9;
    }
    .brand-text{display:flex;flex-direction:column;gap:2px}
    .brand-name{font-weight:700;font-size:14px;color:var(--text);letter-spacing:.2px}
    .brand-sub{font-size:12px;color:var(--muted)}

    .site-nav{
      display:flex;align-items:center;gap:14px;
    }
    .nav-link{
      color:var(--muted);
      text-decoration:none;
      font-size:14px;
      padding:8px 10px;border-radius:12px;
      transition:background .2s ease,color .2s ease, transform .2s ease;
    }
    .nav-link:hover{
      background:rgba(17,24,39,.05);
      color:var(--text);
      transform:translateY(-1px);
    }
    .nav-cta{
      text-decoration:none;
      font-size:14px;
      color:#fff;
      background:linear-gradient(135deg, var(--primary), #0d46d8);
      padding:10px 14px;border-radius:14px;
      box-shadow:0 12px 28px rgba(23,87,255,.18);
      transition:transform .2s ease, filter .2s ease;
      white-space:nowrap;
    }
    .nav-cta:hover{transform:translateY(-1px);filter:saturate(1.05)}
    .nav-toggle{
      display:none;
      border:1px solid rgba(17,24,39,.10);
      background:rgba(255,255,255,.78);
      border-radius:14px;
      padding:10px 12px;
      align-items:center;gap:10px;
      color:var(--text);
      cursor:pointer;
      box-shadow:0 8px 20px rgba(17,24,39,.05);
    }
    .nav-toggle-icon{
      width:18px;height:12px;position:relative;display:inline-block;
    }
    .nav-toggle-icon:before,.nav-toggle-icon:after{
      content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:rgba(17,24,39,.65);
    }
    .nav-toggle-icon:before{top:0}
    .nav-toggle-icon:after{bottom:0}
    .nav-toggle-icon{
      background:linear-gradient(rgba(17,24,39,.65), rgba(17,24,39,.65)) center/100% 2px no-repeat;
    }
    .nav-toggle-text{font-size:14px;font-weight:650}

    .site-nav.open{
      display:flex;
    }

    .page-main{padding-bottom:26px}
    .hero{
      position:relative;
      overflow:hidden;
      padding:26px 0 8px;
    }
    .hero-inner{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap:22px;
      align-items:start;
    }
    .hero-copy{
      padding:10px 0;
    }
    .hero-title{
      margin:8px 0 10px;
      font-size:34px;
      line-height:1.14;
      letter-spacing:-.6px;
    }
    .hero-desc{
      margin:0;
      color:var(--muted);
      font-size:15px;
      max-width:56ch;
    }
    .hero-actions{
      margin-top:16px;
      display:flex;gap:12px;flex-wrap:wrap;
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;
      border-radius:14px;
      padding:12px 16px;
      text-decoration:none;
      cursor:pointer;
      border:1px solid transparent;
      font-weight:700;
      font-size:14px;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      user-select:none;
      -webkit-tap-highlight-color: transparent;
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--primary), #0d46d8);
      color:#fff;
      box-shadow:0 16px 34px rgba(23,87,255,.22);
    }
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 20px 44px rgba(23,87,255,.26)}
    .btn-ghost{
      background:rgba(255,255,255,.75);
      border-color:rgba(17,24,39,.12);
      color:var(--text);
      box-shadow:0 10px 24px rgba(17,24,39,.05);
    }
    .btn-ghost:hover{transform:translateY(-1px);border-color:rgba(23,87,255,.28)}
    .btn-block{width:100%}
    .btn-small{padding:10px 12px;border-radius:12px;font-weight:750}
    .hero-badges{
      margin-top:16px;
      display:flex;gap:10px;flex-wrap:wrap;
    }
    .badge{
      background:var(--chip-bg);
      border:1px solid var(--chip-border);
      color:rgba(15,61,191,.95);
      padding:8px 10px;
      border-radius:999px;
      font-weight:650;
      font-size:12.5px;
    }

    .hero-panel{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      padding:16px;
      position:relative;
      overflow:hidden;
    }
    .hero-panel:before{
      content:"";
      position:absolute;inset:-120px -80px auto auto;
      width:260px;height:260px;border-radius:50%;
      background:radial-gradient(circle at 30% 30%, rgba(124,58,237,.22), transparent 60%);
      pointer-events:none;
    }
    .panel-top{position:relative;z-index:1}
    .panel-title{font-weight:850;font-size:14px}
    .panel-sub{color:var(--muted);font-size:12.5px;margin-top:3px}
    .panel-grid{
      margin-top:14px;
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      position:relative;z-index:1;
    }
    .mini-card{
      background:rgba(255,255,255,.85);
      border:1px solid rgba(17,24,39,.08);
      border-radius:14px;
      padding:12px;
      transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
      box-shadow:0 10px 22px rgba(17,24,39,.04);
    }
    .mini-card:hover{
      transform:translateY(-2px);
      border-color:rgba(23,87,255,.22);
      box-shadow:0 16px 34px rgba(23,87,255,.12);
    }
    .mini-dot{width:10px;height:10px;border-radius:50%;margin-bottom:8px}
    .dot-1{background:rgba(23,87,255,.85)}
    .dot-2{background:rgba(124,58,237,.85)}
    .dot-3{background:rgba(20,184,166,.85)}
    .dot-4{background:rgba(245,158,11,.88)}
    .mini-title{font-weight:850;font-size:13px;margin-bottom:6px}
    .mini-desc{color:var(--muted);font-size:12.5px}

    .panel-callout{
      margin-top:14px;
      background:linear-gradient(135deg, rgba(23,87,255,.10), rgba(124,58,237,.10));
      border:1px solid rgba(23,87,255,.16);
      border-radius:14px;
      padding:12px;
      display:flex;gap:10px;align-items:flex-start;
      position:relative;z-index:1;
    }
    .callout-emoji{font-size:16px;line-height:1}
    .callout-text{color:rgba(17,24,39,.82);font-size:13.5px}

    .hero-bg{
      position:absolute;inset:-40px 0 auto 0;height:240px;
      background:linear-gradient(180deg, rgba(23,87,255,.06), transparent);
      pointer-events:none;
    }

    .section{padding:38px 0}
    .alt-surface{
      background:
        radial-gradient(900px 380px at 20% 0%, rgba(23,87,255,.08), transparent 55%),
        radial-gradient(700px 340px at 90% 20%, rgba(124,58,237,.08), transparent 55%),
        linear-gradient(#ffffff, rgba(255,255,255,.60));
      border-top:1px solid rgba(17,24,39,.05);
      border-bottom:1px solid rgba(17,24,39,.05);
    }
    .section-head{margin-bottom:18px}
    .section-title{margin:0;font-size:22px;letter-spacing:-.3px}
    .section-sub{margin:8px 0 0;color:var(--muted);font-size:14px}

    .cards-3{
      display:grid;
      grid-template-columns:repeat(3, 1fr);
      gap:14px;
    }
    .cards-2{
      display:grid;
      grid-template-columns:repeat(2, 1fr);
      gap:14px;
    }
    .info-card{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      border-radius:var(--radius);
      padding:16px;
      box-shadow:var(--shadow-soft);
    }
    .soft-border{background:rgba(255,255,255,.70)}
    .card-title{margin:0 0 8px;font-size:15px;font-weight:900}
    .card-text{margin:0;color:rgba(31,41,55,.78);font-size:13.8px}
    .card-list{
      margin:12px 0 0;
      padding-left:18px;
      color:var(--muted);
      font-size:13px;
    }
    .card-list li{margin:6px 0}

    .pill-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
    .pill{
      font-size:12.5px;
      color:rgba(31,41,55,.78);
      background:rgba(17,24,39,.04);
      border:1px solid rgba(17,24,39,.08);
      padding:7px 10px;
      border-radius:999px;
      font-weight:700;
    }

    .steps{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
    }
    .step{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      border-radius:var(--radius);
      padding:14px;
      box-shadow:var(--shadow-soft);
      display:flex;gap:12px;align-items:flex-start;
      transition:transform .2s ease, border-color .2s ease;
      outline:none;
    }
    .step:hover{transform:translateY(-1px);border-color:rgba(23,87,255,.18)}
    .step-index{
      width:56px;flex:0 0 56px;
      height:34px;
      border-radius:999px;
      background:linear-gradient(135deg, rgba(23,87,255,.12), rgba(124,58,237,.10));
      border:1px solid rgba(23,87,255,.18);
      color:rgba(15,61,191,.98);
      display:flex;align-items:center;justify-content:center;
      font-weight:950;font-size:13px;
      margin-top:2px;
    }
    .step-title{margin:0 0 6px;font-size:15px;font-weight:900}
    .step-text{margin:0;color:rgba(31,41,55,.78);font-size:13.8px}
    .step-check{margin-top:10px;display:flex;flex-wrap:wrap;gap:10px}
    .check-row{
      display:flex;align-items:center;gap:10px;
      background:rgba(17,24,39,.03);
      border:1px solid rgba(17,24,39,.08);
      padding:9px 10px;border-radius:14px;
      cursor:pointer;
      user-select:none;
    }
    .check-input{
      width:16px;height:16px;
      accent-color:var(--primary);
    }
    .check-text{font-size:13px;color:rgba(31,41,55,.82);font-weight:700}

    .result-bar{
      margin-top:16px;
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      padding:12px 14px;
      border-radius:var(--radius);
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      box-shadow:var(--shadow-soft);
    }
    .result-title{font-weight:950}
    .result-sub{color:var(--muted);font-size:13px;margin-top:4px}

    .notes-inner{padding:0 0 10px}
    .notes-grid{
      display:grid;
      grid-template-columns: repeat(4, 1fr);
      gap:12px;
      margin-top:14px;
    }
    .note-card{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      border-radius:var(--radius);
      padding:14px;
      box-shadow:var(--shadow-soft);
    }
    .note-icon{
      width:34px;height:34px;border-radius:12px;
      display:flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg, rgba(23,87,255,.12), rgba(124,58,237,.10));
      border:1px solid rgba(23,87,255,.18);
      color:rgba(15,61,191,.98);
      font-weight:950;
      margin-bottom:10px;
    }
    .note-title{font-weight:950;margin-bottom:6px}
    .note-text{color:rgba(31,41,55,.78);font-size:13.4px}

    .contact-inner{padding:0 0 6px}
    .contact-layout{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap:14px;
      align-items:start;
    }
    .contact-card{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      padding:16px;
    }
    .form-head{margin-bottom:12px}
    .form-title{font-weight:950;font-size:15px}
    .form-sub{color:var(--muted);font-size:13px;margin-top:4px}

    .contact-form{display:flex;flex-direction:column;gap:12px}
    .field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field-label{font-size:13px;color:rgba(31,41,55,.86);font-weight:850}
    .field-input,.field-textarea,.field-select{
      width:100%;
      border-radius:14px;
      border:1px solid rgba(17,24,39,.14);
      background:rgba(255,255,255,.92);
      padding:12px 12px;
      font-size:14px;
      color:var(--text);
      outline:none;
      transition:border-color .2s ease, box-shadow .2s ease;
    }
    .field-textarea{resize:vertical;min-height:100px}
    .field-select{appearance:none;background-image:linear-gradient(45deg, transparent 50%, rgba(31,41,55,.55) 50%),linear-gradient(135deg, rgba(31,41,55,.55) 50%, transparent 50%);background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%;background-size:6px 6px, 6px 6px;background-repeat:no-repeat;padding-right:40px}
    .field-input:focus,.field-textarea:focus,.field-select:focus{
      border-color:rgba(23,87,255,.35);
      box-shadow:0 0 0 4px rgba(23,87,255,.12);
    }
    .field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .form-actions{margin-top:2px}
    .form-status{
      display:flex;align-items:center;gap:10px;
      background:rgba(23,87,255,.08);
      border:1px solid rgba(23,87,255,.20);
      padding:10px 12px;border-radius:14px;
      color:rgba(15,61,191,.95);
    }
    .status-dot{
      width:10px;height:10px;border-radius:50%;
      background:rgba(23,87,255,.9);
      box-shadow:0 0 0 6px rgba(23,87,255,.14);
      animation:pulse 1.2s ease-in-out infinite;
    }
    @keyframes pulse{
      0%,100%{transform:scale(1);opacity:.95}
      50%{transform:scale(1.15);opacity:.75}
    }

    .contact-side .side-card{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.08);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
      padding:16px;
      position:relative;
      overflow:hidden;
    }
    .contact-side .side-card:before{
      content:"";
      position:absolute;inset:auto -60px -80px auto;
      width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle at 30% 30%, rgba(23,87,255,.18), transparent 62%);
      pointer-events:none;
    }
    .side-title{font-weight:950;position:relative;z-index:1}
    .side-list{
      margin:10px 0 0;
      padding-left:18px;
      color:rgba(31,41,55,.78);
      font-size:13.6px;
      position:relative;z-index:1;
    }
    .side-list li{margin:8px 0}
    .side-divider{
      height:1px;background:rgba(17,24,39,.08);
      margin:14px 0;
      position:relative;z-index:1;
    }
    .side-foot{color:var(--muted);font-size:13.2px;position:relative;z-index:1}

    .site-footer{
      background:#f6f7fb;
      border-top:1px solid rgba(17,24,39,.06);
    }
    .footer-inner{
      padding:18px 0;
      display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
    }
    .footer-title{font-weight:950}
    .footer-sub{color:var(--muted);font-size:13px;margin-top:6px}
    .footer-links{
      display:flex;gap:12px;flex-wrap:wrap;
      justify-content:flex-end;
    }
    .footer-links a{
      color:rgba(31,41,55,.74);
      text-decoration:none;
      font-size:13.5px;
      padding:8px 10px;border-radius:12px;
      border:1px solid rgba(17,24,39,.08);
      background:rgba(255,255,255,.65);
      transition:transform .2s ease, border-color .2s ease, background .2s ease;
    }
    .footer-links a:hover{
      transform:translateY(-1px);
      border-color:rgba(23,87,255,.22);
      background:rgba(255,255,255,.85);
    }
    .footer-copy{
      margin-top:10px;
      color:var(--muted);
      font-size:12.5px;
      text-align:right;
    }

    .related-wrap{
      padding:26px 0 34px;
      background:linear-gradient(180deg, rgba(255,255,255,.0), rgba(255,255,255,.55));
    }
    .related-inner{
      padding-top:0;
    }
    .related-title{
      margin:0 0 14px;
      font-size:18px;
      font-weight:950;
      letter-spacing:-.2px;
    }
    .related-grid{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap:10px;
    }
    .related-item{
      text-decoration:none;
      color:rgba(31,41,55,.86);
      background:rgba(255,255,255,.82);
      border:1px solid rgba(17,24,39,.08);
      border-radius:14px;
      padding:12px 12px;
      font-weight:850;
      font-size:13.5px;
      box-shadow:0 10px 22px rgba(17,24,39,.04);
      transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
      display:block;
    }
    .related-item:hover, .related-item.hovered{
      transform:translateY(-2px);
      border-color:rgba(23,87,255,.22);
      box-shadow:0 18px 40px rgba(23,87,255,.14);
      background:rgba(255,255,255,.95);
    }

    @media (max-width: 980px){
      .hero-inner{grid-template-columns:1fr;gap:14px}
      .hero-title{font-size:30px}
      .panel-grid{grid-template-columns:1fr 1fr}
      .cards-3{grid-template-columns:1fr;gap:12px}
      .cards-2{grid-template-columns:1fr;gap:12px}
      .notes-grid{grid-template-columns:1fr 1fr}
      .contact-layout{grid-template-columns:1fr}
      .related-grid{grid-template-columns:1fr 1fr}
      .footer-inner{flex-direction:column;align-items:flex-start}
      .footer-links{justify-content:flex-start}
      .footer-copy{text-align:left}
      .site-nav{display:none}
      .nav-toggle{display:inline-flex}
      .site-nav.open{
        display:flex;
        position:absolute;
        left:0;right:0;
        top:64px;
        background:rgba(252,252,254,.98);
        backdrop-filter:saturate(180%) blur(10px);
        border-bottom:1px solid rgba(17,24,39,.08);
        padding:12px 18px 16px;
        flex-direction:column;
        align-items:flex-start;
        gap:8px;
      }
      .site-nav.open .nav-cta{width:100%;text-align:center}
    }
    @media (max-width: 520px){
      .container{padding:0 14px}
      .hero-title{font-size:26px}
      .panel-grid{grid-template-columns:1fr}
      .notes-grid{grid-template-columns:1fr}
      .field-row{grid-template-columns:1fr}
      .field-grid{grid-template-columns:1fr}
      .related-grid{grid-template-columns:1fr}
      .nav-toggle-text{display:none}
    }
    @media (prefers-reduced-motion: reduce){
      *{scroll-behavior:auto !important; transition:none !important; animation:none !important}
    }