:root {
            --navy: #0f1f3d;
            --navy-light: #1a3356;
            --navy-surface: #f0f3f8;
            --gold: #b8942e;
            --gold-hover: #9e7d22;
            --gold-light: #fef9ed;
            --gold-border: #e8d89e;
            --text: #1c1c1c;
            --text-secondary: #4a4a4a;
            --text-muted: #7a7a7a;
            --white: #ffffff;
            --surface: #fafaf9;
            --surface-alt: #f5f4f1;
            --border: #e2dfd8;
            --border-light: #eeebe4;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --radius: 8px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --font: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
            --transition: 0.22s ease;
            --max-w: 1140px;
            --nav-h: 62px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--surface);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        /* ── NAV ── */
        .nav {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-h);
            display: flex;
            align-items: center;
        }
        .nav-inner {
            width: 100%;
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 750;
            font-size: 1.2rem;
            color: var(--navy);
            text-decoration: none;
            letter-spacing: -0.01em;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-logo .icon {
            width: 30px;
            height: 30px;
            border-radius: 7px;
            background: var(--navy);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.78rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            gap: 2px;
            list-style: none;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-links a {
            text-decoration: none;
            color: var(--text-secondary);
            font-weight: 540;
            font-size: 0.88rem;
            padding: 7px 13px;
            border-radius: 18px;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: var(--navy-surface);
            color: var(--navy);
        }
        .nav-links a.premium-link {
            background: var(--gold-light);
            color: var(--gold);
            font-weight: 650;
        }
        .nav-links a.premium-link:hover {
            background: #f5e8c9;
            color: #8a6d20;
        }
        .mobile-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--navy);
            padding: 6px;
        }
        /* ── MAIN ── */
        .main-wrap {
            flex: 1;
            max-width: var(--max-w);
            width: 100%;
            margin: 0 auto;
            padding: 0 20px 50px;
        }
        .page {
            display: none;
            animation: fadeIn 0.3s ease;
        }
        .page.active {
            display: block;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        /* ── HERO ── */
        .hero {
            text-align: center;
            padding: 50px 16px 34px;
        }
        .hero-badge {
            display: inline-block;
            background: var(--navy-surface);
            color: var(--navy);
            font-weight: 650;
            font-size: 0.82rem;
            padding: 5px 15px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--navy);
        }
        .hero h1 span {
            color: var(--gold);
        }
        .hero p {
            font-size: 1.08rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.5;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 22px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 0.92rem;
            text-decoration: none;
            cursor: pointer;
            border: none;
            transition: var(--transition);
            letter-spacing: 0.01em;
            font-family: var(--font);
        }
        .btn-primary {
            background: var(--navy);
            color: #fff;
            box-shadow: 0 2px 10px rgba(15, 31, 61, 0.22);
        }
        .btn-primary:hover {
            background: var(--navy-light);
            box-shadow: 0 4px 18px rgba(15, 31, 61, 0.32);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: var(--white);
            color: var(--navy);
            border: 1.5px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--navy);
            background: var(--navy-surface);
        }
        .btn-gold {
            background: var(--gold);
            color: #fff;
            box-shadow: 0 2px 10px rgba(184, 148, 46, 0.25);
        }
        .btn-gold:hover {
            background: var(--gold-hover);
            box-shadow: 0 4px 18px rgba(184, 148, 46, 0.35);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.83rem;
            border-radius: 20px;
        }
        .btn-xs {
            padding: 5px 12px;
            font-size: 0.76rem;
            border-radius: 14px;
        }
        /* ── CARDS ── */
        .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
            color: var(--navy);
        }
        .section-subtitle {
            color: var(--text-muted);
            margin-bottom: 22px;
            font-size: 0.9rem;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
            gap: 16px;
            margin-bottom: 32px;
        }
        .card {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow);
            border-color: #d5d2cb;
            transform: translateY(-2px);
        }
        .card-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 12px;
            flex-shrink: 0;
        }
        .card-icon.navy {
            background: #e8ecf4;
            color: #0f1f3d;
        }
        .card-icon.gold {
            background: #fef9ed;
            color: #b8942e;
        }
        .card-icon.green {
            background: #e8f5ec;
            color: #2d6a3f;
        }
        .card-icon.purple {
            background: #f1ecf8;
            color: #5b3e96;
        }
        .card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            letter-spacing: -0.01em;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 0.86rem;
            line-height: 1.5;
            margin: 0;
        }
        .card-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            font-size: 0.68rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            padding: 3px 10px;
            border-radius: 11px;
            background: #e8ecf4;
            color: #0f1f3d;
        }
        .card-badge.soon {
            background: #fef3c7;
            color: #92400e;
        }
        .card-badge.premium {
            background: #fef9ed;
            color: #b8942e;
        }
        /* ── DOMAIN ACCORDION ── */
        .domain-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 28px;
        }
        .domain-item {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .domain-header {
            padding: 15px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
        }
        .domain-header:hover {
            background: #fafcfe;
        }
        .domain-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--navy-surface);
            color: var(--navy);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.88rem;
            flex-shrink: 0;
        }
        .domain-info {
            flex: 1;
            min-width: 0;
        }
        .domain-info strong {
            display: block;
            font-size: 0.93rem;
            color: var(--navy);
            margin-bottom: 1px;
        }
        .domain-info span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .domain-pct {
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--gold);
            flex-shrink: 0;
        }
        .domain-body {
            display: none;
            padding: 0 18px 18px 66px;
            font-size: 0.88rem;
            line-height: 1.65;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-light);
        }
        .domain-body.open {
            display: block;
        }
        .domain-body p {
            margin-bottom: 6px;
        }
        .domain-body .tip {
            background: #fef9ed;
            border-left: 3px solid var(--gold);
            padding: 10px 14px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin-top: 8px;
            font-size: 0.84rem;
            color: #6b4e1a;
        }
        /* ── QUIZ ── */
        .quiz-wrap {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            max-width: 750px;
        }
        .quiz-progress {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .quiz-bar {
            flex: 1;
            height: 5px;
            background: var(--border);
            border-radius: 3px;
            overflow: hidden;
        }
        .quiz-fill {
            height: 100%;
            background: var(--navy);
            border-radius: 3px;
            transition: width 0.3s;
        }
        .quiz-q {
            font-size: 1.05rem;
            font-weight: 650;
            margin-bottom: 14px;
            line-height: 1.45;
            color: var(--navy);
        }
        .quiz-opts {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .quiz-opt {
            padding: 12px 16px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            background: var(--surface-alt);
            text-align: left;
            font-family: var(--font);
        }
        .quiz-opt:hover {
            border-color: var(--navy);
            background: #eef2f8;
        }
        .quiz-opt.selected {
            border-color: var(--navy);
            background: #e2e9f4;
            font-weight: 600;
        }
        .quiz-opt.correct {
            border-color: #2d6a3f !important;
            background: #e8f5ec !important;
            color: #1a4a2a !important;
        }
        .quiz-opt.wrong {
            border-color: #c0392b !important;
            background: #fdecea !important;
            color: #8b1a1a !important;
        }
        .quiz-fb {
            margin-top: 14px;
            padding: 12px 16px;
            border-radius: var(--radius);
            font-size: 0.86rem;
            line-height: 1.5;
            display: none;
        }
        .quiz-fb.show {
            display: block;
        }
        .quiz-fb.good {
            background: #e8f5ec;
            color: #1a4a2a;
            border-left: 3px solid #2d6a3f;
        }
        .quiz-fb.bad {
            background: #fdecea;
            color: #8b1a1a;
            border-left: 3px solid #c0392b;
        }
        .quiz-score {
            text-align: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin-top: 16px;
            color: var(--navy);
        }
        /* ── FORMS ── */
        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 4px;
            color: var(--navy);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.9rem;
            font-family: var(--font);
            transition: var(--transition);
            background: var(--white);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--navy);
            box-shadow: 0 0 0 3px rgba(15, 31, 61, 0.06);
        }
        .form-card {
            background: var(--white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            max-width: 600px;
        }
        /* ── CAPTCHA BOX ── */
        .captcha-box {
            background: #fafcfe;
            border: 1.5px dashed var(--border);
            border-radius: var(--radius);
            padding: 16px 18px;
            margin: 16px 0;
            text-align: center;
        }
        .captcha-box .math-q {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--navy);
            margin-bottom: 8px;
        }
        .captcha-box input {
            width: 80px;
            text-align: center;
            padding: 8px;
            font-size: 1rem;
        }
        .phone-reveal {
            display: none;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--navy);
            margin-top: 10px;
            letter-spacing: 0.02em;
        }
        .phone-reveal.show {
            display: block;
        }
        /* ── PREMIUM BOX ── */
        .premium-box {
            background: linear-gradient(135deg, #fef9ed 0%, #fffdf6 100%);
            border: 2px solid var(--gold-border);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            margin: 24px 0;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .premium-box h3 {
            font-size: 1.25rem;
            color: var(--navy);
            margin-bottom: 6px;
        }
        .premium-box .price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--gold);
            margin: 10px 0;
        }
        .premium-box .price small {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--text-muted);
        }
        .payment-methods {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
            margin: 14px 0;
        }
        .payment-tag {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 8px 16px;
            font-weight: 600;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        /* ── ADMIN GATE ── */
        .admin-gate {
            text-align: center;
            padding: 40px 20px;
            max-width: 400px;
            margin: 0 auto;
        }
        .admin-gate input {
            text-align: center;
            font-size: 1rem;
            padding: 10px;
            width: 180px;
            border-radius: var(--radius);
            border: 1.5px solid var(--border);
        }
        /* ── FOOTER ── */
        .footer {
            border-top: 1px solid var(--border-light);
            padding: 22px 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.82rem;
            background: var(--white);
            margin-top: auto;
        }
        .footer a {
            color: var(--navy);
            text-decoration: none;
            font-weight: 600;
        }
        /* ── RESPONSIVE ── */
        @media (max-width: 800px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-h);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 10px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                gap: 1px;
                z-index: 199;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 10px 14px;
                border-radius: 8px;
            }
            .mobile-btn {
                display: block;
            }
            .domain-body {
                padding: 0 14px 14px 50px;
            }
            .quiz-wrap {
                padding: 16px;
            }
            .premium-box {
                padding: 20px 14px;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 30px 8px 20px;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 16px;
                font-size: 0.83rem;
            }
            .domain-header {
                padding: 12px 14px;
                gap: 8px;
            }
            .domain-body {
                padding: 0 10px 12px 46px;
                font-size: 0.8rem;
            }
        }