:root {
            --teal-deep: #0b5c58;
            --teal-mid: #1a7f7a;
            --teal-soft: #e6f5f3;
            --slate-800: #1a3c4a;
            --slate-600: #3e5a6c;
            --slate-400: #5c7380;
            --border-subtle: #e8eef3;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.02);
            --shadow-hover: 0 18px 28px -14px rgba(0,0,0,0.08);
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, sans-serif;
            background:#fefefe; color:#11181c; line-height:1.45;
            -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
        }
        .container { max-width:1300px; margin:0 auto; padding:0 32px; }
        .site-header {
            background:rgba(255,255,255,0.94); backdrop-filter:blur(14px);
            -webkit-backdrop-filter:blur(14px); position:sticky; top:0; z-index:100;
            border-bottom:1px solid rgba(0,0,0,0.05); transition:box-shadow 0.3s ease;
        }
        .site-header.scrolled { box-shadow:0 4px 20px rgba(0,0,0,0.06); }
        .header-flex {
            display:flex; align-items:center; justify-content:space-between;
            padding:14px 0; flex-wrap:wrap; gap:18px;
        }
        .brand { display:flex; align-items:center; gap:10px; text-decoration:none; flex-shrink:0; }
        .brand-logo-img {
            width:40px; height:40px; border-radius:10px;
            background:linear-gradient(135deg, #0f6e6a 0%, #1a8a7e 100%);
            display:flex; align-items:center; justify-content:center; font-size:1.4rem;
        }
        .brand-name { font-size:1.5rem; font-weight:700; letter-spacing:-0.4px; color:#0c4e6e; white-space:nowrap; }
        .brand-name span { font-weight:400; color:#5a7d8c; font-size:0.8rem; margin-left:2px; }
        .nav-links-new { display:flex; gap:22px; align-items:center; flex-wrap:wrap; }
        .nav-links-new a {
            text-decoration:none; font-weight:500; font-size:0.93rem; color:#2c3e50;
            transition:color 0.2s; position:relative; white-space:nowrap;
        }
        .nav-links-new a:hover, .nav-links-new a.active { color:#1a7f7a; }
        .nav-links-new a::after {
            content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px;
            background:#1a7f7a; border-radius:2px; transition:width 0.25s ease;
        }
        .nav-links-new a:hover::after, .nav-links-new a.active::after { width:100%; }
        .btn-ghost {
            border:1px solid #cbd5e1; padding:7px 20px; border-radius:100px;
            background:transparent; font-weight:500; font-size:0.9rem; cursor:pointer;
            text-decoration:none; color:#2c3e50; white-space:nowrap; transition:all 0.2s;
        }
        .btn-ghost:hover { border-color:#1a7f7a; color:#1a7f7a; background:#f0faf9; }

        .page-hero { padding:50px 0 35px; background:#fff; border-bottom:1px solid #f0f4f8; }
        .section-header { text-align:center; margin-bottom:35px; }
        .section-header h2 { font-size:2rem; font-weight:700; color:var(--slate-800); letter-spacing:-0.02em; }
        .section-subtitle { color:var(--slate-400); font-size:0.98rem; margin-top:8px; }

        .rule-tag-group { display:flex; flex-wrap:wrap; gap:12px; justify-content:center; margin:25px 0 15px; }
        .rule-tag {
            background:#f3f8f7; border:1px solid #d4e8e3; padding:8px 20px;
            border-radius:30px; font-size:0.88rem; font-weight:600; color:#0f6e6a;
        }
        .explain-card {
            background:#f9fcfb; border-radius:20px; padding:28px; margin:25px 0;
            border:1px solid #e0eeea; line-height:1.7;
        }
        .explain-card p { color:var(--slate-600); font-size:0.95rem; }

        .scene-grid {
            display:grid; grid-template-columns:repeat(auto-fit, minmax(240px,1fr)); gap:22px;
            margin:30px 0;
        }
        .scene-item {
            background:#fff; border:1px solid var(--border-subtle); border-radius:22px;
            padding:24px; transition:all 0.25s;
        }
        .scene-item:hover { border-color:#b8d8d4; box-shadow:var(--shadow-hover); transform:translateY(-3px); }
        .scene-icon { font-size:2.2rem; margin-bottom:14px; }
        .scene-item h3 { font-size:1.2rem; font-weight:700; color:var(--slate-800); margin-bottom:8px; }
        .scene-item p { color:var(--slate-400); font-size:0.9rem; line-height:1.5; }
        .scene-item ul { list-style:none; padding:0; margin-top:10px; }
        .scene-item ul li { font-size:0.85rem; color:var(--slate-600); padding:4px 0; display:flex; align-items:center; gap:6px; }
        .scene-item ul li::before { content:'•'; color:#0f6e6a; font-weight:700; }

        .user-grid {
            display:grid; grid-template-columns:repeat(auto-fit, minmax(220px,1fr)); gap:16px;
            margin:35px 0;
        }
        .user-card {
            background:#fafcfd; border:1px solid var(--border-subtle); border-radius:20px;
            padding:24px 20px; text-decoration:none; color:inherit; transition:all 0.3s;
            display:flex; flex-direction:column; gap:10px;
        }
        .user-card:hover { border-color:#1a7f7a; background:#f9fdfc; transform:translateY(-3px); }
        .user-card .card-icon { font-size:1.9rem; }
        .user-card h4 { font-weight:700; color:var(--slate-800); }
        .user-card p { font-size:0.84rem; color:var(--slate-400); }
        .card-arrow { color:#1a7f7a; font-weight:600; font-size:0.84rem; margin-top:auto; display:flex; align-items:center; gap:4px; }

        .footer-alt {
            background:#f1f5f9; padding:44px 0 32px; font-size:0.88rem; color:var(--slate-400);
            border-top:1px solid #e9edf2;
        }
        .footer-grid { display:flex; flex-wrap:wrap; justify-content:space-between; gap:30px; }
        .footer-col h5 { font-weight:700; color:var(--slate-800); margin-bottom:10px; font-size:0.93rem; }
        .footer-col a { display:block; color:var(--slate-400); text-decoration:none; margin-bottom:6px; font-size:0.86rem; transition:color 0.2s; }
        .footer-col a:hover { color:#1a7f7a; }
        .footer-bottom { text-align:center; margin-top:26px; padding-top:18px; border-top:1px solid #dde4ea; font-size:0.8rem; color:#8a9ba7; }

        @media (max-width:780px) {
            .container { padding:0 18px; }
            .header-flex { gap:12px; }
            .nav-links-new { gap:12px; }
            .nav-links-new a { font-size:0.83rem; }
            .brand-name { font-size:1.25rem; }
            .brand-name span { display:none; }
            .section-header h2 { font-size:1.6rem; }
        }
        @media (max-width:480px) {
            .scene-grid, .user-grid { grid-template-columns:1fr; }
        }