/* ===== ОСНОВА KUPIKEY: ТЁМНАЯ, ТОНКАЯ, ВОЗДУШНАЯ ===== */
        :root {
            --bg-deep: #0b0e12;
            --bg-soft: #11161c;
            --bg-card: #171d24;
            --bg-hover: #1e262e;
            --accent-light: #00ffb3;
            --accent-glow: rgba(0, 255, 179, 0.08);
            --accent-gradient: linear-gradient(145deg, #00ffb3, #00d0ff);
            --text-primary: rgba(255, 255, 255, 0.92);
            --text-secondary: rgba(255, 255, 255, 0.65);
            --text-tertiary: rgba(255, 255, 255, 0.4);
            --border-glass: rgba(255, 255, 255, 0.03);
            --border-hover: rgba(0, 255, 179, 0.15);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 100px;
            --font-main: 'Inter', -apple-system, sans-serif;
            --sp-1: 4px;
            --sp-2: 8px;
            --sp-3: 12px;
            --sp-4: 16px;
            --sp-5: 20px;
            --sp-6: 24px;
            --sp-8: 32px;
            --sp-10: 40px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: var(--bg-deep);
            color: var(--text-primary);
            font-family: var(--font-main);
            font-size: 14px;
            font-weight: 300;
            line-height: 1.5;
            letter-spacing: -0.01em;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        .app {
            max-width: 1440px;
            margin: 0 auto;
            padding: var(--sp-4) var(--sp-6);
        }

        /* ===== ХЕДЕР ===== */
        .header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            margin-bottom: var(--sp-6);
            background: rgba(11, 14, 18, 0.7);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-full);
            padding: 0 var(--sp-5);
            position: sticky;
            top: var(--sp-4);
            z-index: 100;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: var(--sp-2);
        }

        .burger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
            font-size: 1.2rem;
            font-weight: 300;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .logo {
            font-size: 1.7rem;
            font-weight: 300;
            letter-spacing: -0.02em;
            color: white;
            display: flex;
            align-items: center;
            gap: var(--sp-1);
            text-decoration: none;
        }
        .logo i {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-size: 1.5rem;
        }
        .logo span {
            font-weight: 400;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .search-wrapper {
            flex: 0 1 300px;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: var(--bg-soft);
            border-radius: var(--radius-full);
            padding: 10px var(--sp-5);
            border: 1px solid var(--border-glass);
            transition: 0.2s ease;
        }
        .search-form i {
            color: var(--text-tertiary);
            margin-right: var(--sp-2);
            font-size: 0.95rem;
        }
        .search-input {
            background: transparent;
            border: none;
            width: 100%;
            font-size: 0.95rem;
            font-weight: 300;
            color: var(--text-primary);
            outline: none;
        }
        .search-input::placeholder {
            color: var(--text-tertiary);
            font-weight: 300;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--sp-2);
        }
        .icon-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            color: var(--text-secondary);
            font-size: 1.1rem;
            font-weight: 300;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(0, 255, 179, 0.2);
            color: var(--accent-light);
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 400;
            cursor: pointer;
            transition: 0.2s ease;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            background: var(--accent-light);
            color: #0b0e12;
            border-color: var(--accent-light);
        }

        /* ===== СТАТИСТИКА ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--sp-4);
            margin-bottom: var(--sp-8);
        }
        .stat-card {
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: var(--sp-4);
            display: flex;
            align-items: center;
            gap: var(--sp-3);
        }
        .stat-icon {
            width: 44px;
            height: 44px;
            background: rgba(0, 255, 179, 0.04);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-size: 1.2rem;
        }
        .stat-info h4 {
            font-size: 1.2rem;
            font-weight: 300;
            color: white;
            line-height: 1.2;
            margin-bottom: 2px;
        }
        .stat-info p {
            font-size: 0.7rem;
            color: var(--text-tertiary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            font-weight: 300;
        }

        /* ===== СЕКЦИИ ===== */
        .section {
            margin: var(--sp-8) 0;
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: var(--sp-4);
        }
        .section-title {
            font-size: 1.1rem;
            font-weight: 300;
            color: white;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: var(--sp-2);
        }
        .section-title i {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-size: 1rem;
        }

        /* ===== КАК ЭТО РАБОТАЕТ ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--sp-5);
        }
        .step-card {
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: var(--sp-6) var(--sp-4);
            position: relative;
            transition: 0.2s ease;
        }
        .step-card:hover {
            border-color: rgba(0, 255, 179, 0.2);
            background: var(--bg-hover);
        }
        .step-number {
            position: absolute;
            top: var(--sp-4);
            right: var(--sp-4);
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 0.8;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            opacity: 0.15;
        }
        .step-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 255, 179, 0.06);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-size: 1.3rem;
            margin-bottom: var(--sp-4);
        }
        .step-card h3 {
            font-size: 1rem;
            font-weight: 500;
            color: white;
            margin-bottom: var(--sp-2);
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            font-weight: 300;
        }

        /* ===== РОЛИ (РЕКЛАМОДАТЕЛЬ / ВЕБМАСТЕР) ===== */
        .roles-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--sp-6);
        }
        .role-card {
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            padding: var(--sp-8) var(--sp-6);
            position: relative;
            overflow: hidden;
            transition: 0.2s ease;
        }
        .role-card::before {
            content: '';
            position: absolute;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            right: -40px;
            top: -40px;
            background: radial-gradient(circle, rgba(0, 255, 179, 0.12), transparent 70%);
            pointer-events: none;
        }
        .role-card:hover {
            border-color: rgba(0, 255, 179, 0.25);
            background: var(--bg-hover);
        }
        .role-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 255, 179, 0.08);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-size: 1.5rem;
            margin-bottom: var(--sp-5);
            position: relative;
            z-index: 1;
        }
        .role-card h3 {
            font-size: 1.3rem;
            font-weight: 500;
            color: white;
            margin-bottom: var(--sp-3);
            position: relative;
            z-index: 1;
        }
        .role-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: var(--sp-5);
            position: relative;
            z-index: 1;
            font-weight: 300;
        }
        .role-list {
            list-style: none;
            margin-bottom: var(--sp-6);
            position: relative;
            z-index: 1;
        }
        .role-list li {
            display: flex;
            align-items: center;
            gap: var(--sp-3);
            font-size: 0.85rem;
            color: var(--text-primary);
            font-weight: 400;
            margin-bottom: var(--sp-2);
        }
        .role-list li i {
            color: var(--accent-light);
            font-size: 0.8rem;
            width: 18px;
            text-align: center;
        }

        /* ===== ВОЗМОЖНОСТИ ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--sp-4);
            margin: var(--sp-8) 0;
        }
        .feature-block {
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: var(--sp-4);
            display: flex;
            align-items: center;
            gap: var(--sp-3);
            transition: 0.2s ease;
        }
        .feature-block:hover {
            border-color: rgba(0, 255, 179, 0.2);
            background: var(--bg-hover);
        }
        .feature-block i {
            font-size: 1.6rem;
            color: var(--text-tertiary);
        }
        .feature-block:hover i {
            color: var(--accent-light);
        }
        .feature-block div {
            display: flex;
            flex-direction: column;
        }
        .feature-block h4 {
            font-size: 0.9rem;
            font-weight: 500;
            color: white;
            margin-bottom: 2px;
        }
        .feature-block p {
            font-size: 0.7rem;
            color: var(--text-tertiary);
            font-weight: 300;
        }

        /* ===== БЛОК С АКЦИЕЙ ===== */
        .flash-sale {
            background: linear-gradient(145deg, #0f151c, #0a0d12);
            border-radius: var(--radius-xl);
            padding: var(--sp-6);
            margin: var(--sp-8) 0;
            border: 1px solid rgba(0, 255, 179, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--sp-5);
        }
        .flash-sale-left {
            display: flex;
            align-items: center;
            gap: var(--sp-4);
        }
        .flash-sale-left i {
            font-size: 2rem;
            color: var(--accent-light);
        }
        .flash-sale-info h3 {
            font-size: 1.1rem;
            font-weight: 500;
            color: white;
            margin-bottom: 4px;
        }
        .flash-sale-info p {
            font-size: 0.75rem;
            color: var(--text-tertiary);
            font-weight: 300;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--sp-3);
        }
        .faq-item {
            background: var(--bg-soft);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.2s;
        }
        .faq-item[open] {
            border-color: rgba(0, 255, 179, 0.3);
        }
        .faq-item summary {
            padding: var(--sp-4) var(--sp-5);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--sp-4);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 300;
            color: var(--accent-light);
            transition: transform 0.25s;
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item__body {
            padding: 0 var(--sp-5) var(--sp-4);
            font-size: 0.85rem;
            line-height: 1.6;
            color: var(--text-secondary);
            font-weight: 300;
        }

        /* ===== ФИНАЛЬНЫЙ CTA ===== */
        .final-cta {
            margin: var(--sp-8) 0;
            position: relative;
            background: linear-gradient(145deg, #0c1117, #060a0e);
            border-radius: var(--radius-xl);
            padding: var(--sp-8);
            text-align: center;
            border: 1px solid rgba(0, 255, 179, 0.1);
            overflow: hidden;
        }
        .final-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 30%, rgba(0, 255, 179, 0.08), transparent 60%);
            pointer-events: none;
        }
        .final-cta h2 {
            font-size: 2rem;
            font-weight: 300;
            color: white;
            margin-bottom: var(--sp-4);
            position: relative;
        }
        .final-cta p {
            font-size: 0.95rem;
            color: var(--text-tertiary);
            margin-bottom: var(--sp-6);
            position: relative;
        }
        .final-cta .btn-ghost {
            font-size: 0.9rem;
            padding: 10px 28px;
        }

        /* ===== ФУТЕР ===== */
        .footer {
            background: var(--bg-soft);
            border-top: 1px solid var(--border-glass);
            padding: var(--sp-8) 0 var(--sp-4);
            margin-top: var(--sp-8);
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: var(--sp-8);
            margin-bottom: var(--sp-6);
        }
        .footer-brand .logo {
            margin-bottom: var(--sp-4);
        }
        .footer-brand p {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            line-height: 1.6;
            max-width: 300px;
        }
        .footer h4 {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-tertiary);
            margin-bottom: var(--sp-4);
            font-weight: 500;
        }
        .footer ul {
            list-style: none;
        }
        .footer ul li {
            margin-bottom: var(--sp-2);
        }
        .footer a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: 0.2s;
            font-weight: 300;
        }
        .footer a:hover {
            color: white;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: var(--sp-5);
            border-top: 1px solid var(--border-glass);
            font-size: 0.75rem;
            color: var(--text-tertiary);
            flex-wrap: wrap;
            gap: var(--sp-4);
        }
        .payment-icons i {
            font-size: 1.5rem;
            margin-left: var(--sp-3);
            color: var(--text-tertiary);
            transition: 0.2s;
        }
        .payment-icons i:hover {
            color: var(--accent-light);
        }

        /* ===== МОБИЛЬНАЯ НАВИГАЦИЯ ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 76px;
            left: var(--sp-4);
            right: var(--sp-4);
            background: var(--bg-soft);
            backdrop-filter: blur(30px);
            border-radius: var(--radius-xl);
            padding: var(--sp-6);
            border: 1px solid var(--border-glass);
            z-index: 99;
            transform: translateY(-150%);
            transition: 0.3s ease;
        }
        .mobile-nav.active {
            transform: translateY(0);
        }
        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: var(--sp-3);
            padding: var(--sp-3) var(--sp-4);
            border-radius: var(--radius-full);
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 400;
            margin-bottom: var(--sp-2);
            transition: 0.15s;
        }
        .mobile-nav a i {
            width: 24px;
            font-size: 1rem;
            color: var(--accent-light);
        }
        .mobile-nav a:hover {
            background: rgba(0, 255, 179, 0.05);
            color: white;
        }

        /* ===== АДАПТИВ ===== */
        @media (max-width: 1200px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 1024px) {
            .roles-grid { grid-template-columns: 1fr; }
            .search-wrapper { display: none; }
            .burger { display: flex; }
        }
        @media (max-width: 768px) {
            .app { padding: var(--sp-3) var(--sp-4); }
            .header { padding: 0 var(--sp-4); }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .features-grid { grid-template-columns: 1fr; }
            .flash-sale { flex-direction: column; align-items: flex-start; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 480px) {
            .stats-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .roles-grid { grid-template-columns: 1fr; }
        }

        /* Анимация появления */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }
        .reveal.in {
            opacity: 1;
            transform: translateY(0);
        }