/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6c5ce7;
    --primary-dark: #5849c4;
    --primary-light: #a29bfe;
    --accent: #00d2ff;
    --dark: #1a1a2e;
    --dark-2: #16213e;
    --dark-3: #0f3460;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --white: #ffffff;
    --bg: #f8fafc;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: #333;
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--white);
}

.nav-menu {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== Hero ==================== */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark-3) 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 210, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 680px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(108, 92, 231, 0.2);
    border: 1px solid rgba(108, 92, 231, 0.4);
    border-radius: 100px;
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(108, 92, 231, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
}

.hero-stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

/* ==================== Section ==================== */
.section {
    padding: 100px 0;
}

.section-gray {
    background: #f1f5f9;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== About ==================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-visual-card {
    background: linear-gradient(135deg, var(--dark-2), var(--dark-3));
    border-radius: 20px;
    padding: 48px;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.about-visual-card h3 {
    font-size: 24px;
    margin-bottom: 24px;
}

.about-visual-card p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.about-mission {
    display: flex;
    gap: 24px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.about-mission-item h4 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-light);
}

.about-mission-item p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.about-text h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--gray);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.about-feature-icon {
    width: 40px;
    height: 40px;
    background: rgba(108, 92, 231, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}

.about-feature h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.about-feature p {
    font-size: 14px;
    color: var(--gray);
    margin: 0;
}

/* ==================== Games ==================== */
.games-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.game-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.game-card-banner {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--white);
    position: relative;
}

.game-card-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.3) 100%);
}

.game-1 { background: linear-gradient(135deg, #6c5ce7, #a29bfe); }
.game-2 { background: linear-gradient(135deg, #e17055, #fab1a0); }
.game-3 { background: linear-gradient(135deg, #00b894, #55efc4); }
.game-4 { background: linear-gradient(135deg, #0984e3, #74b9ff); }
.game-5 { background: linear-gradient(135deg, #e84393, #fd79a8); }
.game-6 { background: linear-gradient(135deg, #fdcb6e, #ffeaa7); }

.game-card-body {
    padding: 28px;
}

.game-card-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.game-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.game-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 16px;
}

.game-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--gray-light);
}

.game-card-platform {
    font-size: 13px;
    color: var(--gray);
}

.game-card-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

/* ==================== Contact ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contact-info h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 32px;
    line-height: 1.8;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: rgba(108, 92, 231, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 20px;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 15px;
    color: var(--gray);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn {
    width: 100%;
}

/* ==================== Legal Pages ==================== */
.legal-content {
    max-width: 820px;
    margin: 0 auto;
    padding: 140px 0 80px;
}

.legal-content h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.legal-updated {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 40px;
}

.legal-content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin: 32px 0 16px;
}

.legal-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin: 24px 0 12px;
}

.legal-content p {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 16px;
}

.legal-content ul,
.legal-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.legal-content li {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 8px;
}

.legal-content strong {
    color: var(--dark);
}

.legal-section {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-light);
    margin-bottom: 24px;
}

.legal-section:last-child {
    border-bottom: none;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    color: var(--white);
    font-size: 20px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--white);
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-col h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 20px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    font-size: 14px;
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-icp {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-icp a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-icp a:hover {
    color: var(--white);
}

/* ==================== Animations ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
}

.fade-in.visible {
    animation: fadeInUp 0.8s ease forwards;
}

/* ==================== Responsive ==================== */
@media (max-width: 968px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .games-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-stats {
        gap: 24px;
    }

    .hero-stat-num {
        font-size: 28px;
    }
}

@media (max-width: 640px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .games-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .hero h1 {
        font-size: 28px;
    }

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

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        flex-wrap: wrap;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 24px;
    }
}