/* 全局变量 - 浅色主题 (品牌蓝) */
:root {
    --bg-primary: #f4f7fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef4ff;
    --bg-card: #ffffff;
    --text-primary: #162033;
    --text-secondary: #5f6b85;
    --text-tertiary: #9baaca;
    --border-color: #d6deeb;
    --border-hover: #c4d3eb;
    --accent-primary: #2563eb;
    --accent-secondary: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 8px 20px rgba(15, 23, 42, 0.12);
    --shadow-xl: 0 20px 44px rgba(15, 23, 42, 0.18);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* 深色主题 (品牌蓝) */
[data-theme="dark"] {
    --bg-primary: #0b1220;
    --bg-secondary: #111a2d;
    --bg-tertiary: #15223b;
    --bg-card: #111a2d;
    --text-primary: #ecf3ff;
    --text-secondary: #9baaca;
    --text-tertiary: #6b7a99;
    --border-color: #23314f;
    --border-hover: #33476f;
    --accent-primary: #7fb0ff;
    --accent-secondary: #c4b5fd;
    --accent-gradient: linear-gradient(135deg, #7fb0ff 0%, #c4b5fd 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 44px rgba(0, 0, 0, 0.5);
}

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    background-image:
        radial-gradient(circle at top, rgba(37, 99, 235, 0.12), transparent 34%),
        linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-primary) 52%);
}

[data-theme="dark"] body {
    background-image:
        radial-gradient(circle at top, rgba(127, 176, 255, 0.16), transparent 34%),
        linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-primary) 48%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(244, 247, 251, 0.8);
    transition: all 0.3s ease;
}

[data-theme="dark"] .navbar {
    background: rgba(11, 18, 32, 0.8);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    margin: 0;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

.sun-icon, .moon-icon {
    font-size: 1.25rem;
    display: none;
}

[data-theme="light"] .sun-icon {
    display: inline;
}

[data-theme="dark"] .moon-icon {
    display: inline;
}

/* Hero区域 */
.hero {
    margin-top: 70px;
    padding: 100px 0;
    background: transparent;
    position: relative;
    overflow: hidden;
}

/* Hero背景渐变 */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background: radial-gradient(circle at 30% 30%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    pointer-events: none;
    animation: heroPulse 8s ease-in-out infinite;
}

@keyframes heroPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

[data-theme="dark"] .hero::before {
    background: radial-gradient(circle at 30% 30%, rgba(127, 176, 255, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(196, 181, 253, 0.15) 0%, transparent 50%);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

/* 左侧内容区域 */
.hero-content-left {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 特性标签 */
.hero-badges {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary);
    transition: all 0.3s ease;
}

.hero-badge:hover {
    background: var(--accent-gradient);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* 主标题 */
.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0;
    color: var(--text-primary);
}

.hero-title-highlight {
    display: block;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 0.85em;
    margin-top: 8px;
}

/* 副标题 */
.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* 核心特性 */
.hero-features {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.hero-feature:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.25rem;
}

.feature-text {
    font-weight: 600;
    color: var(--text-primary);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.125rem;
}

.btn-icon {
    font-size: 1.25rem;
}

/* CTA按钮组 */
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin: 8px 0;
}

/* 统计数据 */
.hero-stats {
    display: flex;
    gap: 32px;
    padding-top: 8px;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 右侧截图轮播区域 */
.hero-content-right {
    display: flex;
    justify-content: center;
}

.hero-screenshot-carousel {
    width: 100%;
    max-width: 600px;
}

/* 主截图显示区 */
.screenshot-main {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.screenshot-main:hover {
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
    border-color: var(--accent-primary);
}

.screenshot-wrapper {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.hero-screenshot-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--bg-secondary);
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.5s ease;
}

.hero-screenshot-image.active {
    opacity: 1;
    transform: scale(1);
}

/* 导航按钮 */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    opacity: 0.9;
}

.carousel-nav:hover {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

.carousel-nav svg {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
}

.carousel-nav:hover svg {
    color: white;
}

.carousel-prev {
    left: 16px;
}

.carousel-next {
    right: 16px;
}

/* 截图信息 */
.screenshot-info {
    padding: 20px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.screenshot-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.screenshot-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 缩略图导航 */
.screenshot-thumbnails {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    justify-content: center;
}

.thumbnail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 8px;
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.6;
}

.thumbnail:hover {
    opacity: 1;
    transform: translateY(-4px);
}

.thumbnail.active {
    border-color: var(--accent-primary);
    opacity: 1;
    transform: scale(1.05);
}

.thumbnail img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    background: var(--bg-secondary);
}

.thumbnail-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* 轮播指示器 */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator:hover {
    background: var(--accent-primary);
}

.indicator.active {
    width: 24px;
    border-radius: 4px;
    background: var(--accent-gradient);
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero {
        padding: 80px 0;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-content-right {
        order: -1;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 1.25rem;
    }

    .screenshot-wrapper {
        height: 350px;
    }

    .thumbnail img {
        width: 60px;
        height: 45px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-title-highlight {
        font-size: 0.9em;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-badges {
        justify-content: center;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

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

    .hero-features {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .screenshot-wrapper {
        height: 300px;
    }

    .carousel-nav {
        width: 40px;
        height: 40px;
    }

    .carousel-nav svg {
        width: 16px;
        height: 16px;
    }

    .thumbnail img {
        width: 50px;
        height: 38px;
    }

    .thumbnail-label {
        font-size: 0.625rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-badges {
        flex-direction: column;
        align-items: center;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        gap: 16px;
    }

    .screenshot-wrapper {
        height: 250px;
    }

    .screenshot-thumbnails {
        gap: 8px;
    }

    .thumbnail {
        padding: 6px;
    }

    .thumbnail img {
        width: 40px;
        height: 30px;
    }
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* 支持平台 */
.platforms {
    background: var(--bg-primary);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.platform-card {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.platform-logo {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
}

.platform-name {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
}

/* 功能特性 */
.features {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.feature-card.featured {
    background: var(--accent-gradient);
    border: none;
    transform: scale(1.02);
}

.feature-card.featured .feature-icon,
.feature-card.featured .feature-title,
.feature-card.featured .feature-desc {
    color: white;
}

.feature-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 截图展示 */
.screenshots {
    background: var(--bg-primary);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.screenshot-card {
    text-align: center;
}

/* 截图可点击 */
.screenshot-image {
    cursor: pointer;
}

.screenshot-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.screenshot-image:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.screenshot-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 80px 24px;
    margin-bottom: 16px;
    transition: all 0.3s ease;
}

.screenshot-placeholder:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.placeholder-icon {
    font-size: 3rem;
}

.placeholder-text {
    color: var(--text-tertiary);
    font-weight: 500;
}

.screenshot-caption {
    color: var(--text-secondary);
    font-weight: 500;
}

/* 下载区域 */
.download {
    background: var(--bg-secondary);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.download-subtitle {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.download-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.download-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-weight: 500;
}

.download-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.download-note {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* 合作加盟 */
.partnership {
    background: var(--bg-primary);
}

.partnership-content {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.partnership-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.benefit-item {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
}

.benefit-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.benefit-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.benefit-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.rules-content {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.rules-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
    counter-reset: rule-counter;
}

.rules-list li {
    position: relative;
    padding-left: 48px;
}

.rules-list li::before {
    counter-increment: rule-counter;
    content: counter(rule-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.rules-list strong {
    display: block;
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.rules-list p {
    color: var(--text-secondary);
}

.contact-card {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
}

.contact-item:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.contact-icon {
    font-size: 2rem;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.contact-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.qr-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 60px 24px;
    text-align: center;
}

.qr-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.qr-icon {
    font-size: 3rem;
}

.qr-text {
    color: var(--text-tertiary);
    font-weight: 500;
}

.qr-image-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-image {
    max-width: 280px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.qr-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.125rem;
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* 全屏预览模态框 */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
}

.lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 48px;
    height: 48px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 2rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-nav svg {
    width: 24px;
    height: 24px;
}

.lightbox-prev {
    left: -80px;
}

.lightbox-next {
    right: -80px;
}

.lightbox-image {
    max-width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-md);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    color: white;
    font-size: 1.125rem;
    margin-top: 20px;
    text-align: center;
}

.lightbox-counter {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin-top: 8px;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-visual {
        order: -1;
    }

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

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

    .platforms-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .download-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .section-title {
        font-size: 1.875rem;
    }

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

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

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

    .feature-card.featured {
        transform: scale(1);
    }

    .feature-card.featured:hover {
        transform: translateY(-4px);
    }

    section {
        padding: 60px 0;
    }

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

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

    /* 响应式设计 - 全屏预览 */
    .lightbox-content {
        max-width: 95vw;
        max-height: 95vh;
    }

    .lightbox-close {
        top: 16px;
        right: 16px;
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .lightbox-nav {
        width: 44px;
        height: 44px;
    }

    .lightbox-prev {
        left: 16px;
    }

    .lightbox-next {
        right: 16px;
    }

    .lightbox-nav svg {
        width: 20px;
        height: 20px;
    }

    .lightbox-caption {
        font-size: 1rem;
        padding: 0 60px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 1.875rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .visual-card {
        max-width: 100%;
    }

    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .platform-card {
        padding: 24px 16px;
    }

    .platform-logo {
        width: 48px;
        height: 48px;
    }

    .lightbox-nav {
        width: 36px;
        height: 36px;
        bottom: 16px;
        top: auto;
        transform: none;
    }

    .lightbox-nav:hover {
        transform: scale(1.1);
    }

    .lightbox-prev {
        left: calc(50% - 50px);
    }

    .lightbox-next {
        right: calc(50% - 50px);
    }
}