/* ==================== 全局样式 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 颜色系统 */
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-tertiary: #1a2332;
    --bg-card: #151c2c;
    
    --border-primary: #1e293b;
    --border-secondary: #334155;
    
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #22c55e;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-pink: #ec4899;
    --accent-cyan: #14b8a6;
    
    /* 尺寸系统 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    
    /* 间距系统 */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==================== 导航栏 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
}

.navbar {
    height: 70px;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

/* ==================== Hero 区域 ==================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 40%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-2%, 2%); }
}

.hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 24px;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--accent-blue);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 36px;
    font-weight: 900;
    color: var(--accent-blue);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-secondary);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.4);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.quick-access-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.quick-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    cursor: pointer;
    transition: all 0.3s;
    min-width: 400px;
}

.quick-card:hover {
    transform: translateX(8px);
    border-color: var(--border-secondary);
    box-shadow: var(--shadow-lg);
}

.quick-card.media-card {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(236, 72, 153, 0.1));
    border-color: rgba(168, 85, 247, 0.3);
}

.quick-card.startup-card {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(251, 146, 60, 0.1));
    border-color: rgba(16, 185, 129, 0.3);
}

.quick-card-icon {
    font-size: 48px;
}

.quick-card-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.quick-card-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

.quick-card-arrow {
    margin-left: auto;
    font-size: 24px;
    color: var(--text-muted);
    transition: transform 0.3s;
}

.quick-card:hover .quick-card-arrow {
    transform: translateX(4px);
}

/* ==================== 通用区块样式 ==================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 40px;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 18px;
}

/* ==================== 服务产品区 ==================== */
/* ==================== 返现活动广告横幅 ==================== */
.promo-banner {
    margin-bottom: 40px;
    padding: 20px 30px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 50%, #f39c12 100%);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(255, 107, 107, 0.3),
                0 0 60px rgba(255, 107, 107, 0.2);
    animation: promoGlow 2s ease-in-out infinite alternate;
}

@keyframes promoGlow {
    0% {
        box-shadow: 0 8px 32px rgba(255, 107, 107, 0.3),
                    0 0 60px rgba(255, 107, 107, 0.2);
    }
    100% {
        box-shadow: 0 8px 32px rgba(255, 107, 107, 0.5),
                    0 0 80px rgba(255, 107, 107, 0.4);
    }
}

.promo-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: promoShine 3s linear infinite;
}

@keyframes promoShine {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.promo-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}

.promo-icon {
    font-size: 32px;
    animation: promoBounce 1s ease-in-out infinite;
}

@keyframes promoBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.promo-text {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.promo-highlight {
    font-size: 20px;
    font-weight: 900;
    color: #fff;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
    letter-spacing: 1px;
}

.promo-desc {
    font-size: 18px;
    color: #fff;
    font-weight: 500;
    text-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.promo-desc strong {
    font-weight: 900;
    color: #ffeaa7;
    font-size: 20px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.promo-badge {
    background: rgba(255,255,255,0.25);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.3);
    animation: promoPulse 1.5s ease-in-out infinite;
}

@keyframes promoPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.9;
    }
}

/* 响应式适配 */
@media (max-width: 768px) {
    .promo-banner {
        padding: 16px 20px;
        margin-bottom: 30px;
    }

    .promo-content {
        gap: 12px;
    }

    .promo-icon {
        font-size: 24px;
    }

    .promo-highlight {
        font-size: 16px;
    }

    .promo-desc {
        font-size: 14px;
    }

    .promo-desc strong {
        font-size: 16px;
    }

    .promo-badge {
        font-size: 12px;
        padding: 4px 12px;
    }
}

.services-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
}

.service-category {
    margin-bottom: 80px;
}

.service-category:last-child {
    margin-bottom: 0;
}

.category-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.category-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.category-header h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.category-header p {
    font-size: 16px;
    color: var(--text-secondary);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.service-grid.two-columns {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
    margin: 0 auto;
}

.service-card {
    position: relative;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-secondary);
    box-shadow: var(--shadow-lg);
}

/* Windows 系统卡片样式 */
.win7-card {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(59, 130, 246, 0.4);
}

.win8-card {
    background: linear-gradient(180deg, rgba(20, 184, 166, 0.2) 0%, rgba(20, 184, 166, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(20, 184, 166, 0.4);
}

.win10-card {
    background: linear-gradient(180deg, rgba(139, 92, 246, 0.2) 0%, rgba(139, 92, 246, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(139, 92, 246, 0.4);
}

.win11-card {
    background: linear-gradient(180deg, rgba(236, 72, 153, 0.2) 0%, rgba(236, 72, 153, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(236, 72, 153, 0.4);
}

/* 影视资源卡片样式 */
.media-foreign-card {
    background: linear-gradient(180deg, rgba(168, 85, 247, 0.2) 0%, rgba(168, 85, 247, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(168, 85, 247, 0.4);
}

.media-domestic-card {
    background: linear-gradient(180deg, rgba(239, 68, 68, 0.2) 0%, rgba(239, 68, 68, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(239, 68, 68, 0.4);
}

.media-short-card {
    background: linear-gradient(180deg, rgba(34, 211, 238, 0.2) 0%, rgba(34, 211, 238, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(34, 211, 238, 0.4);
}

/* 创业项目卡片样式 */
.startup-project-card {
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(16, 185, 129, 0.4);
}

.startup-service-card {
    background: linear-gradient(180deg, rgba(251, 146, 60, 0.2) 0%, rgba(251, 146, 60, 0.05) 50%, var(--bg-card) 100%);
    border-color: rgba(251, 146, 60, 0.4);
}

.service-badge {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.popular-badge {
    position: absolute;
    top: 12px;
    right: -28px;
    padding: 4px 36px;
    background: var(--accent-blue);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    transform: rotate(45deg);
}

.service-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.service-card h4 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.service-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.service-price {
    margin-bottom: var(--spacing-lg);
}

.price-currency {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-blue);
    vertical-align: top;
}

.price-value {
    font-size: 48px;
    font-weight: 900;
    color: var(--accent-blue);
    line-height: 1;
}

.service-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.service-features li {
    font-size: 13px;
    color: var(--text-secondary);
}

.btn-buy {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-sm);
    background: var(--border-primary);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--border-secondary);
    cursor: pointer;
    transition: all 0.3s;
}

.btn-buy:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.service-card.popular .btn-buy {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
}

/* ==================== 核心优势 ==================== */
.features-section {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-secondary);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 使用指南 ==================== */
.guide-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.step-card {
    flex: 1;
    max-width: 300px;
    text-align: center;
}

.step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid var(--accent-blue);
    font-size: 24px;
    font-weight: 900;
    color: var(--accent-blue);
}

.step-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

.step-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    margin-bottom: 60px;
}

/* ==================== 常见问题 ==================== */
.faq-section {
    padding: 100px 0;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--border-secondary);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    transition: background 0.2s;
    user-select: none;
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-icon {
    color: var(--text-muted);
    font-size: 24px;
    transition: transform 0.3s;
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer-content {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 页脚 ==================== */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-primary);
    background: rgba(0, 0, 0, 0.3);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand p {
    margin-top: var(--spacing-sm);
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.footer-column nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-column a {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-column a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-primary);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ==================== 弹窗样式 ==================== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-overlay.show {
    display: flex;
}

.modal-container {
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalIn 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-container.small {
    max-width: 420px;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-primary);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: none;
    background: var(--border-primary);
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--accent-red);
    color: #fff;
}

.modal-body {
    padding: var(--spacing-xl);
}

/* 订单信息 */
.order-info {
    margin-bottom: var(--spacing-lg);
}

.order-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-primary);
    font-size: 14px;
}

.order-label {
    color: var(--text-muted);
}

.order-value {
    font-weight: 600;
}

.order-price {
    color: var(--accent-orange);
    font-size: 18px;
}

.order-no {
    font-family: monospace;
    font-size: 12px;
    color: var(--text-muted);
}

/* 支付方式 */
.payment-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.payment-tab {
    flex: 1;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--border-primary);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.payment-tab.active {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.payment-panel {
    display: none;
}

.payment-panel.active {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-code-box {
    width: 220px;
    height: 220px;
    border-radius: var(--radius-md);
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.qr-code-box img {
    width: 200px;
    height: 200px;
    object-fit: contain;
}

.qr-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #666;
    font-size: 14px;
    text-align: center;
    gap: 4px;
}

.fallback-icon {
    font-size: 56px;
}

.fallback-hint {
    font-size: 12px;
    color: #999;
}

.qr-hint {
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-xs);
}

.payment-timer {
    text-align: center;
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    font-size: 14px;
    color: var(--accent-orange);
}

.payment-timer strong {
    font-size: 18px;
}

.btn-confirm {
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-md);
    background: var(--accent-green);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: var(--spacing-xs);
}

.btn-confirm:hover {
    background: #16a34a;
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.3);
}

.btn-confirm:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.payment-note {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-top: var(--spacing-sm);
    line-height: 1.8;
}

.input-hint {
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
    font-size: 14px;
}

.order-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: var(--spacing-md);
}

.order-input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* ==================== 成功交付页 ==================== */
.success-page {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1001;
    background: var(--bg-primary);
    overflow-y: auto;
    padding: 40px 0;
}

.success-page.show {
    display: block;
    animation: modalIn 0.4s ease;
}

.success-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.success-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0); }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.success-header h2 {
    font-size: 36px;
    font-weight: 900;
    color: var(--accent-green);
    margin-bottom: var(--spacing-xs);
}

.success-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

.command-card {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    overflow: hidden;
}

.command-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-primary);
}

.command-header h3 {
    font-size: 16px;
    font-weight: 700;
}

.command-tag {
    font-size: 11px;
    padding: 4px 12px;
    border-radius: 12px;
    background: rgba(34, 197, 94, 0.15);
    color: var(--accent-green);
    font-weight: 600;
}

.command-body {
    padding: var(--spacing-lg);
}

.command-hint {
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
    font-size: 14px;
}

.command-block {
    position: relative;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-sm);
    background: #0d1117;
    border: 1px solid var(--border-primary);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    color: #7ee787;
    line-height: 1.8;
    word-break: break-all;
    white-space: pre-wrap;
}

.command-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 12px;
    border-radius: 6px;
    background: var(--border-primary);
    color: var(--text-secondary);
    font-size: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-family: 'Noto Sans SC', sans-serif;
}

.command-copy-btn:hover {
    background: var(--accent-blue);
    color: #fff;
}

.tutorial-step {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    margin-bottom: var(--spacing-sm);
}

.tutorial-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-blue);
    color: #fff;
    font-size: 16px;
    font-weight: 900;
}

.tutorial-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.tutorial-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.notice-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid rgba(245, 158, 11, 0.15);
    margin-bottom: var(--spacing-lg);
}

.notice-card h4 {
    color: var(--accent-orange);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.notice-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.notice-card li {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
}

.notice-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-orange);
}

.btn-back {
    display: block;
    width: 200px;
    margin: var(--spacing-lg) auto 0;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--border-primary);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-back:hover {
    background: var(--accent-blue);
    color: #fff;
}

/* ==================== 分享赚钱卡片 ==================== */
.share-card {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(59, 130, 246, 0.1));
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.share-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.share-header h3 {
    font-size: 18px;
    color: var(--accent-green);
}

.share-tag {
    background: rgba(34, 197, 94, 0.2);
    color: var(--accent-green);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.share-intro {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.share-intro strong {
    color: var(--accent-green);
}

.share-link-box {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.share-link-box input {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
}

.btn-copy-share {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-sm);
    background: var(--accent-green);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-copy-share:hover {
    background: #16a34a;
    transform: scale(1.02);
}

.share-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
}

.share-stats .stat-item {
    text-align: center;
    flex: 1;
}

.share-stats .stat-num {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-green);
}

.share-stats .stat-label {
    font-size: 12px;
    color: var(--text-muted);
}

.share-tip {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.share-tip strong {
    color: var(--accent-orange);
    font-size: 18px;
}

.share-success {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(34, 197, 94, 0.2);
    border-radius: var(--radius-sm);
    color: var(--accent-green);
    font-weight: 600;
}

/* ==================== Toast 提示 ==================== */
.toast {
    position: fixed;
    top: 90px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    background: var(--accent-green);
    color: #fff;
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.3);
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero-section .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-grid.two-columns {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 40px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .service-grid,
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}