:root {
        --primary-color: #f6c453;
        --primary-hover: #ffd06b;
        --secondary-color: #171c24;
        --bg-dark: #0f141b;
        --bg-dark-soft: #131a24;
        --text-light: #f7f8fb;
        --text-grey: #c8cfda;
        --card-bg: rgba(18, 24, 34, 0.78);
        --card-border: rgba(255, 255, 255, 0.10);
        --surface-soft: rgba(255, 255, 255, 0.06);
        --accent-green: #04E061;
        --focus-ring: rgba(246, 196, 83, 0.38);
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        background:
            radial-gradient(circle at top center, rgba(246, 196, 83, 0.10), transparent 30%),
            radial-gradient(circle at bottom right, rgba(255, 255, 255, 0.05), transparent 24%),
            linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-soft) 100%);
        color: var(--text-light);
        min-height: 100vh;
        overflow-x: hidden;
        line-height: 1.5;
    }

    img {
        max-width: 100%;
        height: auto;
    }

    a,
    button {
        -webkit-tap-highlight-color: transparent;
    }

    button {
        font: inherit;
    }

    .visually-hidden {
        position: absolute !important;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    .slider {
        position: fixed;
        inset: 0;
        z-index: -1;
    }

    .slider::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(7, 10, 15, 0.30) 0%, rgba(7, 10, 15, 0.62) 100%);
        pointer-events: none;
    }

    .slide {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        opacity: 0;
        transition: opacity 1.5s ease-in-out;
        filter: brightness(0.33) saturate(0.9);
    }

    .slide.active {
        opacity: 1;
    }

    .hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 40px 20px;
    }

    .container {
        max-width: 1020px;
        width: 100%;
        position: relative;
        z-index: 2;
    }

    .header {
        text-align: center;
        margin-bottom: 40px;
    }

    .header h1 {
        font-size: clamp(2rem, 5vw, 3rem);
        font-weight: 800;
        margin-bottom: 15px;
        text-transform: uppercase;
        letter-spacing: 1px;
        background: linear-gradient(90deg, #f3bb3c, #fff2c7, #f6c453);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        text-shadow: 0 6px 18px rgba(0,0,0,0.45);
    }

    .header p {
        font-size: 1.2rem;
        color: var(--text-grey);
        max-width: 600px;
        margin: 0 auto;
    }

    .tabs {
        display: flex;
        justify-content: center;
        gap: 15px;
        margin-bottom: 30px;
        flex-wrap: wrap;
    }

    .tab-btn {
        padding: 15px 35px;
        font-size: 1.1rem;
        font-weight: 600;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: #fff;
        border-radius: 50px;
        cursor: pointer;
        transition: 0.25s ease;
        display: inline-flex;
        align-items: center;
        gap: 10px;
        backdrop-filter: blur(10px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    }

    .tab-btn:hover {
        background: rgba(255, 255, 255, 0.14);
        transform: translateY(-1px);
    }

    .tab-btn.active {
        background: linear-gradient(180deg, #ffd46f 0%, var(--primary-color) 100%);
        color: #1b1406;
        border-color: rgba(255, 212, 111, 0.95);
        box-shadow: 0 10px 26px rgba(246, 196, 83, 0.28);
    }

    .tab-btn:focus-visible,
    .btn:focus-visible,
    .code-display:focus-visible {
        outline: 3px solid var(--focus-ring);
        outline-offset: 3px;
    }

    .tab-content {
        display: none;
        animation: fadeIn 0.5s ease;
    }

    .tab-content.active {
        display: block;
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .promo-card {
        background: linear-gradient(180deg, rgba(24, 31, 43, 0.84) 0%, rgba(16, 22, 31, 0.84) 100%);
        border-radius: 24px;
        padding: 40px;
        box-shadow: 0 22px 60px rgba(0, 0, 0, 0.42);
        border: 1px solid var(--card-border);
        backdrop-filter: blur(18px);
    }

    .promo-header {
        display: flex;
        align-items: center;
        gap: 20px;
        margin-bottom: 30px;
    }

    .promo-icon {
        width: 70px;
        height: 70px;
        min-width: 70px;
        background: linear-gradient(180deg, #ffd978 0%, var(--primary-color) 100%);
        color: #241800;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2rem;
        box-shadow: 0 8px 24px rgba(246, 196, 83, 0.25);
    }

    .promo-title {
        font-size: clamp(1.5rem, 3vw, 2rem);
        font-weight: 700;
        line-height: 1.2;
    }

    .promo-title span {
        color: var(--primary-color);
    }

    .promo-code-box {
        background: rgba(246, 196, 83, 0.06);
        border: 2px dashed rgba(246, 196, 83, 0.58);
        border-radius: 18px;
        padding: 20px;
        text-align: center;
        margin: 30px 0;
        transition: 0.25s ease;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    }

    .promo-code-box:hover {
        background: rgba(246, 196, 83, 0.10);
    }

    .code-display {
        font-family: 'Courier New', monospace;
        font-size: clamp(1.8rem, 4vw, 3rem);
        font-weight: 800;
        color: var(--primary-color);
        letter-spacing: 4px;
        margin: 10px 0;
        cursor: pointer;
        user-select: all;
        text-shadow: 0 2px 5px rgba(0,0,0,0.5);
        border: 0;
        background: transparent;
        width: 100%;
    }

    .copy-hint {
        font-size: 0.9rem;
        color: var(--text-grey);
    }

    .benefits-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 20px;
        margin: 30px 0;
    }

    .benefit-item {
        background: rgba(255, 255, 255, 0.05);
        padding: 20px;
        border-radius: 16px;
        border-left: 3px solid var(--primary-color);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    }

    .benefit-item i {
        color: var(--primary-color);
        font-size: 1.4rem;
        margin-bottom: 10px;
    }

    .benefit-item h3,
    .benefit-item h4 {
        margin-bottom: 5px;
        color: #fff;
        font-size: 1.05rem;
    }

    .benefit-item p {
        font-size: 0.95rem;
        color: var(--text-grey);
    }

    .action-buttons {
        display: flex;
        gap: 15px;
        flex-wrap: wrap;
    }

    .btn {
        flex: 1;
        min-width: 200px;
        padding: 18px;
        border-radius: 14px;
        text-decoration: none;
        text-align: center;
        font-weight: 700;
        font-size: 1.05rem;
        transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s, border-color 0.2s;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
    }

    .btn-main {
        background: linear-gradient(180deg, #ffd670 0%, var(--primary-color) 100%);
        color: #1f1605;
        box-shadow: 0 10px 24px rgba(246, 196, 83, 0.22);
    }

    .btn-main:hover {
        background: linear-gradient(180deg, #ffdc84 0%, var(--primary-hover) 100%);
        transform: translateY(-2px);
        box-shadow: 0 14px 28px rgba(246, 196, 83, 0.28);
    }

    .btn-outline {
        border: 1px solid rgba(255, 255, 255, 0.22);
        color: #fff;
        background: rgba(255, 255, 255, 0.04);
        backdrop-filter: blur(8px);
    }

    .btn-outline:hover {
        border-color: rgba(255, 255, 255, 0.42);
        background: rgba(255, 255, 255, 0.10);
    }

    .faq-box {
        margin-top: 40px;
        background: rgba(12, 16, 24, 0.72);
        padding: 25px;
        border-radius: 20px;
        border: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: 0 14px 34px rgba(0, 0, 0, 0.24);
    }

    .faq-title {
        font-size: 1.4rem;
        margin-bottom: 20px;
        color: var(--primary-color);
    }

    .faq-item {
        margin-bottom: 15px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 15px;
    }

    .faq-item:last-child {
        border-bottom: none;
        margin-bottom: 0;
        padding-bottom: 0;
    }

    .faq-q {
        color: var(--primary-color);
        font-weight: 600;
        margin-bottom: 5px;
    }

    .faq-a {
        color: var(--text-grey);
        font-size: 0.95rem;
    }

    footer {
        text-align: center;
        padding: 30px 20px;
        color: #aab2bf;
        font-size: 0.85rem;
    }

    @media (max-width: 768px) {
        .hero {
            padding: 24px 16px;
        }

        .promo-card {
            padding: 24px;
        }

        .promo-header {
            align-items: flex-start;
        }

        .action-buttons {
            flex-direction: column;
        }

        .tab-btn {
            width: 100%;
            justify-content: center;
        }
    }

    @media (max-width: 560px) {
        .promo-header {
            flex-direction: column;
            text-align: center;
        }

        .promo-icon {
            margin: 0 auto;
        }

        .code-display {
            letter-spacing: 2px;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }

        *, *::before, *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
            scroll-behavior: auto !important;
        }
    }