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

:root {
    --primary-color: #8B5CF6;
    --primary-dark: #7C3AED;
    --secondary-color: #F59E0B;
    --gold-color: #FFD700;
    --gold-dark: #DAA520;
    --text-white: #FFFFFF;
    --text-light: #E5E7EB;
    --text-gray: #9CA3AF;
    --bg-dark: #0F0F1A;
    --bg-darker: #080810;
    --bg-card: #1A1A2E;
    --bg-card-hover: #252542;
    --border-color: #2D2D44;
    --shadow-gold: 0 0 30px rgba(255, 215, 0, 0.2);
    --shadow-purple: 0 0 30px rgba(139, 92, 246, 0.3);
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* ===== 通用容器 ===== */
.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 80px 20px;
}
.section-container-thin {
    max-width: 1280px;
    margin: 0 auto;
    padding: 30px 20px;
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}
.deco-left, .deco-right {
    width: 50px;
    height: 50px;
    opacity: 0.6;
}
.deco-left img, .deco-right img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.section-title {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 50%, var(--gold-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    letter-spacing: 2px;
}
.section-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    font-weight: 400;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}
.btn:hover { transform: translateY(-2px); }
.btn-large { padding: 16px 40px; font-size: 17px; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
    box-shadow: var(--shadow-purple);
}
.btn-primary:hover { box-shadow: 0 0 40px rgba(139, 92, 246, 0.5); }
.btn-outline {
    background: transparent;
    border: 2px solid var(--gold-color);
    color: var(--gold-color);
}
.btn-outline:hover { background: var(--gold-color); color: var(--bg-dark); }
.btn-login {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 10px 24px;
}
.btn-login:hover { border-color: var(--primary-color); color: var(--primary-color); }
.btn-register {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-dark);
    padding: 10px 24px;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}
.btn-register:hover { box-shadow: 0 6px 25px rgba(245, 158, 11, 0.5); }
.btn-play {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--gold-dark) 100%);
    color: var(--bg-dark);
    padding: 10px 24px;
    width: 100%;
    font-size: 14px;
}
.btn-play:hover { box-shadow: 0 0 20px rgba(255, 215, 0, 0.4); }

/* ===== 导航栏 ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}
.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}
.logo-text {
    font-size: 28px;
    font-weight: 900;
    color: var(--text-white);
    letter-spacing: 1px;
}
.logo-highlight {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.nav-menu {
    display: flex;
    gap: 40px;
}
.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    transition: color 0.3s ease;
    position: relative;
}
.nav-menu a:hover { color: var(--gold-color); }
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-color);
    transition: width 0.3s ease;
}
.nav-menu a:hover::after { width: 100%; }
.nav-buttons {
    display: flex;
    gap: 12px;
}

/* ===== Hero ===== */
.hero-section {
    background: linear-gradient(135deg, var(--bg-darker) 0%, #1A1033 50%, var(--bg-darker) 100%);
    position: relative;
    overflow: hidden;
}
.hero-section::before,
.hero-section::after {
    content: '';
    position: absolute;
    border-radius: 50%;
}
.hero-section::before {
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
}
.hero-section::after {
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
}
.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 100px 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 22px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.15) 0%, rgba(245, 158, 11, 0.15) 100%);
    border: 1px solid var(--gold-color);
    border-radius: 50px;
    color: var(--gold-color);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}
.badge-icon-img {
    width: 22px;
    height: 22px;
    object-fit: contain;
}
.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-white);
}
.hero-reward {
    font-size: 22px;
    color: var(--text-light);
    margin-bottom: 32px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.reward-prefix { opacity: 0.8; }
.hero-coin-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}
.reward-amount {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 48px;
    font-weight: 900;
}
.hero-features {
    display: flex;
    gap: 24px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}
.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
}
.hero-feature-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
}
.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.hero-image {
    position: relative;
}
.hero-image img {
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--shadow-gold);
    border: 1px solid var(--border-color);
}
.hero-badge-img {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 3;
    width: 60px;
    height: 60px;
    animation: pulse 2s infinite;
}
.hero-badge-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border: none;
    box-shadow: none;
    background: transparent;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}
.hero-deco-1, .hero-deco-2 {
    position: absolute;
    z-index: 2;
}
.hero-deco-1 {
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    animation: float 4s ease-in-out infinite;
}
.hero-deco-2 {
    bottom: -10px;
    left: -20px;
    width: 80px;
    height: 80px;
    animation: float 4s ease-in-out infinite -2s;
}
.hero-deco-1 img, .hero-deco-2 img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border: none;
    box-shadow: none;
    background: transparent;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ===== Trust ===== */
.trust-section {
    background: var(--bg-darker);
    border-bottom: 1px solid var(--border-color);
}
.trust-badges {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 16px;
}
.trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}
.trust-badge:hover {
    border-color: var(--gold-color);
    transform: translateY(-2px);
}
.trust-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}
.trust-badge span {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
}

/* ===== 游戏卡片 ===== */
.games-demo-section {
    background: var(--bg-dark);
}
.games-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.game-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
}
.game-card:hover {
    transform: translateY(-8px);
    border-color: var(--gold-color);
    box-shadow: var(--shadow-gold);
    background: var(--bg-card-hover);
}
.game-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
}
.game-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.game-card:hover .game-image img { transform: scale(1.08); }
.game-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 4px;
}
.game-tag img {
    width: 14px;
    height: 14px;
    object-fit: contain;
    border: none;
    box-shadow: none;
}
.game-tag.hot {
    background: linear-gradient(135deg, #EF4444 0%, #F97316 100%);
    color: var(--text-white);
}
.game-tag.new {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: var(--text-white);
}
.game-tag.recommend {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}
.game-tag.classic {
    background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
    color: var(--text-white);
}
.game-info {
    padding: 20px;
}
.game-stars {
    font-size: 13px;
    margin-bottom: 8px;
}
.game-stars .rating {
    color: var(--text-gray);
    font-size: 12px;
    margin-left: 4px;
}
.game-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}
.game-desc {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 12px;
    line-height: 1.5;
}
.game-tags-row {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.mini-tag {
    padding: 4px 10px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 11px;
    color: var(--text-gray);
}
.mini-tag.rtp {
    color: #10B981;
    border-color: rgba(16, 185, 129, 0.3);
    font-weight: 700;
}

/* ===== 特色游戏 ===== */
.featured-games-section {
    background: var(--bg-darker);
}
.featured-game {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: center;
    background: var(--bg-card);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}
.featured-gallery {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.featured-main img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}
.featured-thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}
.f-thumb {
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    aspect-ratio: 1;
}
.f-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.f-thumb:hover { transform: scale(1.05); }
.f-thumb.active {
    border-color: var(--gold-color);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
}
.featured-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 50px;
    color: var(--text-white);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: var(--shadow-purple);
}
.featured-badge img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}
.featured-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}
.featured-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}
.stat-item {
    background: var(--bg-dark);
    padding: 18px 16px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    position: relative;
}
.stat-icon-wrap {
    position: absolute;
    top: -14px;
    right: 14px;
    width: 34px;
    height: 34px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 5px;
}
.stat-icon-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.stat-label {
    font-size: 12px;
    color: var(--text-gray);
    margin-bottom: 4px;
    margin-top: 6px;
}
.stat-value {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-white);
}
.stat-value.highlight {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 22px;
}
.featured-tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}
.f-tag {
    padding: 6px 14px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 50px;
    font-size: 12px;
    color: var(--gold-color);
    font-weight: 500;
}

/* ===== 促销 ===== */
.promo-section {
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}
.promo-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
}
.promo-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
}
.promo-card:hover {
    transform: translateY(-4px);
    border-color: var(--gold-color);
    box-shadow: var(--shadow-gold);
}
.promo-card.big { grid-row: span 2; }
.promo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.promo-card.big img { aspect-ratio: 16/10; }
.promo-card:not(.big) img { aspect-ratio: 16/10; }
.promo-card:hover img { transform: scale(1.08); }
.promo-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 70%, transparent 100%);
}
.promo-label {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    color: var(--bg-dark);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}
.promo-label.green {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: var(--text-white);
}
.promo-label.orange {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
    color: var(--text-white);
}
.promo-label.blue {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    color: var(--text-white);
}
.promo-label.purple {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}
.promo-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}
.promo-title-small {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 6px;
}
.promo-text {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 14px;
    line-height: 1.6;
}
.promo-text-small {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 8px;
}
.promo-amount {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 18px;
}
.promo-amount strong {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 30px;
    font-weight: 900;
    margin: 0 4px;
}

/* ===== 高爆率 ===== */
.high-rtp-section {
    background: var(--bg-dark);
}
.premium-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
    color: var(--text-white);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
    display: flex;
    align-items: center;
    gap: 4px;
}
.premium-badge img {
    width: 16px;
    height: 16px;
    object-fit: contain;
    border: none;
    box-shadow: none;
}

/* ===== 特色功能 ===== */
.features-section {
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.feature-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.feature-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.06;
    z-index: 0;
}
.feature-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.feature-card > *:not(.feature-bg) { position: relative; z-index: 1; }
.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-purple);
    background: var(--bg-card-hover);
}
.feature-icon-wrap {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
}
.feature-icon-wrap img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}
.feature-card:hover .feature-icon-wrap {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    transform: scale(1.1);
    border-color: var(--primary-color);
}
.feature-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 14px;
}
.feature-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 18px;
}
.feature-sub-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}
.feature-sub-tags span {
    padding: 4px 10px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 50px;
    font-size: 11px;
    color: var(--primary-color);
}

/* ===== APP ===== */
.app-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, #121225 50%, var(--bg-darker) 100%);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.app-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}
.app-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(124, 58, 237, 0.15) 100%);
    border: 1px solid var(--primary-color);
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}
.app-badge img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}
.app-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-white);
}
.app-gold {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.app-desc {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 32px;
    line-height: 1.7;
}
.app-feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 36px;
}
.app-f-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.app-f-item img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    flex-shrink: 0;
}
.app-f-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 4px;
}
.app-f-item p {
    font-size: 14px;
    color: var(--text-gray);
}
.app-download-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.app-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background: #000;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-white);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}
.app-btn:hover {
    border-color: var(--gold-color);
    transform: translateY(-2px);
}
.app-btn img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}
.app-btn div {
    display: flex;
    flex-direction: column;
    text-align: left;
}
.app-btn small {
    font-size: 10px;
    color: var(--text-gray);
    line-height: 1.2;
}
.app-btn strong {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
}
.app-btn.qr {
    flex-direction: column;
    gap: 6px;
    padding: 10px 14px;
}
.app-btn.qr img {
    width: 56px;
    height: 56px;
    border-radius: 4px;
}
.app-btn.qr span {
    font-size: 11px;
    color: var(--text-gray);
}
.app-image {
    position: relative;
    display: flex;
    justify-content: center;
}
.phone-wrap {
    width: 280px;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), var(--shadow-gold);
    border: 4px solid #1a1a1a;
    transform: rotate(-3deg);
    transition: transform 0.4s ease;
}
.phone-wrap:hover {
    transform: rotate(0deg) scale(1.02);
}
.phone-wrap img {
    width: 100%;
    height: auto;
}
.app-float {
    position: absolute;
    width: 64px;
    height: 64px;
    animation: float 3s ease-in-out infinite;
}
.app-float.f1 {
    top: 10%;
    left: 0;
}
.app-float.f2 {
    bottom: 15%;
    right: 0;
    animation-delay: -1.5s;
}
.app-float img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ===== 支付 ===== */
.payment-section {
    background: var(--bg-darker);
}
.payment-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 14px;
}
.pay-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}
.pay-item:hover {
    border-color: var(--gold-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.15);
}
.pay-icon {
    width: 44px;
    height: 44px;
    object-fit: contain;
}
.pay-item span {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-light);
    text-align: center;
}

/* ===== 品牌 ===== */
.brand-section {
    background: linear-gradient(135deg, #1A1033 0%, #2D1B5E 50%, #1A1033 100%);
    position: relative;
    overflow: hidden;
}
.brand-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23FFD700' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}
.brand-content {
    text-align: center;
    position: relative;
    z-index: 1;
}
.brand-logo-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    margin-bottom: 30px;
}
.brand-laurel {
    width: 72px;
    height: 72px;
    opacity: 0.7;
}
.brand-laurel.flip { transform: scaleX(-1); }
.brand-laurel img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.brand-logo-box {
    text-align: center;
}
.brand-logo-text {
    font-size: 22px;
    color: var(--text-gray);
    letter-spacing: 4px;
    font-weight: 600;
}
.brand-sub {
    font-size: 12px;
    color: var(--text-gray);
    letter-spacing: 3px;
    margin-top: 6px;
    opacity: 0.7;
}
.brand-slogan {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--gold-color) 0%, #FFA500 50%, var(--gold-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
}
.brand-desc {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 40px;
}
.brand-pics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 30px;
}
.brand-pics img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}
.brand-pics img:hover {
    transform: scale(1.03);
    border-color: var(--gold-color);
    box-shadow: var(--shadow-gold);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
}
.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 50px;
    padding: 60px 0 40px;
}
.footer-logo {
    font-size: 30px;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-logo-icon {
    width: 38px;
    height: 38px;
    object-fit: contain;
}
.footer-about {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 22px;
}
.footer-social-row {
    display: flex;
    gap: 10px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}
.f-social {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}
.f-social img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}
.f-social:hover {
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    border-color: var(--gold-color);
    transform: translateY(-3px);
}
.footer-qr-box {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: fit-content;
}
.footer-qr-box img {
    width: 56px;
    height: 56px;
    border-radius: 4px;
}
.footer-qr-box span {
    font-size: 12px;
    color: var(--text-gray);
    line-height: 1.4;
}
.footer-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}
.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(135deg, var(--gold-color) 0%, var(--secondary-color) 100%);
    border-radius: 2px;
}
.footer-links li { margin-bottom: 12px; }
.footer-links a {
    font-size: 14px;
    color: var(--text-gray);
    transition: all 0.3s ease;
}
.footer-links a:hover {
    color: var(--gold-color);
    padding-left: 6px;
}
.footer-contact li {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 14px;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.f-contact-icon {
    width: 18px;
    height: 18px;
    object-fit: contain;
    flex-shrink: 0;
    margin-top: 2px;
}
.footer-certs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    padding: 28px 0;
    border-top: 1px solid var(--border-color);
}
.cert {
    width: 64px;
    height: 64px;
    object-fit: contain;
    padding: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: all 0.3s ease;
}
.cert:hover {
    border-color: var(--gold-color);
    transform: translateY(-2px);
}
.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}
.footer-bottom > p {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 10px;
}
.f-warn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 13px;
    color: #F87171 !important;
    margin-top: 14px !important;
}
.warn-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

/* ===== 人机验证覆盖层 ===== */
body.captcha-active { overflow: hidden; }
.captcha-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: captchaFadeIn 0.4s ease;
}
.captcha-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}
@keyframes captchaFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.captcha-modal {
    background: linear-gradient(145deg, #1A1A2E 0%, #252542 100%);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 20px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(139, 92, 246, 0.2);
    overflow: hidden;
    animation: captchaModalIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes captchaModalIn {
    from { transform: translateY(30px) scale(0.9); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}
.captcha-header {
    padding: 24px 24px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid rgba(45, 45, 68, 0.8);
}
.captcha-header-icon {
    width: 52px;
    height: 52px;
    object-fit: contain;
    flex-shrink: 0;
    animation: captchaPulse 2s ease-in-out infinite;
}
@keyframes captchaPulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 4px rgba(255, 215, 0, 0.4)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 0 12px rgba(255, 215, 0, 0.7)); }
}
.captcha-header-text h3 {
    font-size: 20px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 4px;
}
.captcha-header-text p {
    font-size: 13px;
    color: #9CA3AF;
}
.captcha-body {
    padding: 20px 24px;
}
.captcha-illustration {
    width: 100%;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}
.captcha-illustration img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 16px;
    border: 2px solid rgba(139, 92, 246, 0.4);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.2);
}
.captcha-progress-wrap {
    margin-bottom: 18px;
}
.captcha-progress-bar {
    width: 0%;
    height: 8px;
    background: linear-gradient(90deg, #8B5CF6 0%, #FFD700 100%);
    border-radius: 4px;
    transition: width 1s linear;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
    margin-bottom: 10px;
}
.captcha-progress-text {
    text-align: center;
    font-size: 13px;
    color: #E5E7EB;
    font-weight: 500;
}
.captcha-progress-text.success {
    color: #10B981;
    font-weight: 700;
}
.captcha-footer {
    padding: 16px 24px 24px;
}

/* 安全项并排一行，居中 */
.captcha-security-row {
    display: flex !important;
    justify-content: center !important;
    flex-direction: row !important;
    gap: 30px !important;
    margin: 12px 0 16px !important;
}
.security-item {
    font-size: 15px !important;
    color: #d4d0e8 !important;
    letter-spacing: 0.3px !important;
}

/* “我不是人机”大按钮，居中 */
.captcha-big-check {
    display: flex !important;
    justify-content: center !important;
    margin: 8px 0 12px !important;
}
.big-check-label {
    display: flex !important;
    align-items: center !important;
    gap: 20px !important;
    padding: 16px 40px !important;
    background: rgba(255, 255, 255, 0.05) !important;
    border: 2px solid rgba(212, 168, 67, 0.3) !important;
    border-radius: 60px !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
    user-select: none !important;
}
.big-check-label:hover {
    background: rgba(212, 168, 67, 0.12) !important;
    border-color: #d4a843 !important;
    transform: scale(1.03) !important;
}
.big-check-label input[type="checkbox"] {
    display: none !important;
}
.big-check-box {
    width: 32px !important;
    height: 32px !important;
    border: 2px solid #a894c9 !important;
    border-radius: 8px !important;
    background: transparent !important;
    position: relative !important;
    transition: all 0.2s !important;
    flex-shrink: 0 !important;
}
.big-check-label input[type="checkbox"]:checked + .big-check-box {
    background: #d4a843 !important;
    border-color: #d4a843 !important;
}
.big-check-label input[type="checkbox"]:checked + .big-check-box::after {
    content: '✓' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    font-size: 24px !important;
    color: #1e1538 !important;
    font-weight: 700 !important;
}
.big-check-text {
    font-size: 22px !important;
    font-weight: 700 !important;
    color: #f5e7b0 !important;
    letter-spacing: 0.5px !important;
}

#captchaStartBtn {
    transition: all 0.3s ease;
}
#captchaStartBtn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.6);
}

/* ===== 提示弹窗 ===== */
.alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.alert-modal {
    background: linear-gradient(145deg, #1A1A2E, #252542);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 24px;
    padding: 40px 36px 32px;
    max-width: 420px;
    width: 100%;
    text-align: center;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(139, 92, 246, 0.2);
    animation: alertFadeIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes alertFadeIn {
    from { transform: scale(0.9) translateY(20px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}
.alert-icon {
    font-size: 52px;
    margin-bottom: 12px;
}
.alert-title {
    font-size: 22px;
    font-weight: 700;
    color: #FFD700;
    margin-bottom: 12px;
}
.alert-message {
    font-size: 16px;
    color: #E5E7EB;
    line-height: 1.6;
    margin-bottom: 28px;
}
.alert-btn {
    background: linear-gradient(135deg, #FFD700, #F59E0B);
    border: none;
    border-radius: 60px;
    padding: 12px 40px;
    font-size: 16px;
    font-weight: 700;
    color: #0F0F1A;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(255, 215, 0, 0.3);
}
.alert-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
}

/* ===== 人机验证底部按钮 ===== */
.captcha-btn {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, #374151 0%, #1F2937 100%);
    border: 1px solid #4B5563;
    border-radius: 12px;
    color: #9CA3AF;
    font-size: 15px;
    font-weight: 700;
    cursor: not-allowed;
    font-family: inherit;
    transition: all 0.3s ease;
}
.captcha-btn:enabled {
    background: linear-gradient(135deg, #FFD700 0%, #F59E0B 100%);
    border-color: #FFD700;
    color: #0F0F1A;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(255, 215, 0, 0.3);
    animation: captchaBtnReady 0.5s ease;
}
@keyframes captchaBtnReady {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}
.captcha-btn:enabled:hover {
    box-shadow: 0 8px 24px rgba(255, 215, 0, 0.5);
    transform: translateY(-2px);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .games-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .featured-game {
        grid-template-columns: 1fr;
        padding: 30px;
    }
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content > * { justify-content: center; }
    .hero-reward,
    .hero-features,
    .hero-buttons { justify-content: center; }
    .app-wrapper { grid-template-columns: 1fr; }
    .nav-menu { display: none; }
    .section-header { flex-direction: column; gap: 10px; }
    .section-title { font-size: 32px; }
    .hero-title { font-size: 38px; }
    .app-title { font-size: 32px; }
    .brand-slogan { font-size: 38px; }
    .payment-grid { grid-template-columns: repeat(4, 1fr); }
    .promo-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }
    .promo-card.big { grid-column: span 2; grid-row: auto; }
    .footer-top { grid-template-columns: repeat(2, 1fr); }
    .brand-pics { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .games-grid,
    .features-grid,
    .payment-grid,
    .promo-grid { grid-template-columns: 1fr; }
    .promo-card.big { grid-column: auto; }
    .featured-stats { grid-template-columns: 1fr; }
    .trust-badges { display: grid; grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr; gap: 40px; }
    .section-container { padding: 50px 16px; }
    .nav-buttons .btn-login { display: none; }
    .hero-title { font-size: 30px; }
    .reward-amount { font-size: 36px; }
    .section-title { font-size: 26px; }
    .brand-slogan { font-size: 28px; }
    .app-title { font-size: 26px; }
    .promo-title { font-size: 20px; }

    /* 人机验证移动端 */
    .captcha-header {
        padding: 20px 20px 14px;
    }
    .captcha-header-icon {
        width: 44px;
        height: 44px;
    }
    .captcha-header-text h3 {
        font-size: 17px;
    }
    .captcha-header-text p {
        font-size: 12px;
    }
    .captcha-body {
        padding: 16px 20px;
    }
    .captcha-illustration img {
        width: 130px;
        height: 130px;
    }
    .captcha-footer {
        padding: 12px 20px 20px;
    }
    .captcha-security-row {
        gap: 16px !important;
        flex-wrap: wrap;
    }
    .security-item {
        font-size: 13px !important;
    }
    .big-check-label {
        padding: 12px 24px !important;
    }
    .big-check-text {
        font-size: 18px !important;
    }
    .big-check-box {
        width: 26px !important;
        height: 26px !important;
    }
    .big-check-label input[type="checkbox"]:checked + .big-check-box::after {
        font-size: 20px !important;
    }
    #captchaStartBtn {
        padding: 12px 32px !important;
        font-size: 16px !important;
    }

    /* 提示弹窗移动端 */
    .alert-modal {
        padding: 32px 24px 28px;
    }
    .alert-icon { font-size: 40px; }
    .alert-title { font-size: 20px; }
    .alert-message { font-size: 15px; }
    .alert-btn { padding: 10px 32px; font-size: 15px; }
}