/* ============================================
   积木剧场 官网样式
   浅色科技风 + 深色模式
   ============================================ */

/* ====== CSS 变量 ====== */
:root {
    /* 主色调 */
    --primary: #2563EB;
    --primary-hover: #1D4ED8;
    --primary-light: #DBEAFE;
    --secondary: #7C3AED;
    --accent: #06B6D4;
    --accent-light: #CFFAFE;

    /* 背景 */
    --bg: #F8FAFC;
    --bg-alt: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-glass: rgba(255, 255, 255, 0.72);

    /* 文字 */
    --text: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --text-inverse: #FFFFFF;

    /* 边框与阴影 */
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.08), 0 4px 10px -6px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 50px -12px rgba(0,0,0,0.12);

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    --gradient-hero: linear-gradient(135deg, #EFF6FF 0%, #F5F3FF 50%, #ECFEFF 100%);
    --gradient-card: linear-gradient(135deg, rgba(37,99,235,0.04) 0%, rgba(124,58,237,0.04) 100%);

    /* 圆角 */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* 动画 */
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====== 深色模式 ====== */
[data-theme="dark"] {
    --primary: #3B82F6;
    --primary-hover: #60A5FA;
    --primary-light: #1E3A5F;
    --secondary: #8B5CF6;
    --accent: #22D3EE;
    --accent-light: #164E63;

    --bg: #0F172A;
    --bg-alt: #1E293B;
    --bg-card: #1E293B;
    --bg-glass: rgba(30, 41, 59, 0.8);

    --text: #E2E8F0;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --text-inverse: #0F172A;

    --border: #334155;
    --border-light: #1E293B;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.5);
    --shadow-xl: 0 20px 50px -12px rgba(0,0,0,0.6);

    --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E1B4B 50%, #0C1929 100%);
    --gradient-card: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(139,92,246,0.08) 100%);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

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

.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-alt);
}

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

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
}

/* ====== 按钮 ====== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
    font-size: 0.95rem;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.88rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

.btn-block {
    width: 100%;
    padding: 14px 24px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ====== 导航栏 ====== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: block;
    border-radius: 9px;
    object-fit: cover;
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-links a {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-studio-btn {
    border-color: rgba(124, 92, 255, 0.48);
    color: var(--primary);
    background: rgba(124, 92, 255, 0.08);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.icon-sun, .icon-moon {
    position: absolute;
    transition: transform var(--transition), opacity var(--transition);
}

[data-theme="light"] .icon-moon { opacity: 1; transform: rotate(0deg); }
[data-theme="light"] .icon-sun  { opacity: 0; transform: rotate(90deg); }
[data-theme="dark"]  .icon-moon { opacity: 0; transform: rotate(-90deg); }
[data-theme="dark"]  .icon-sun  { opacity: 1; transform: rotate(0deg); }

.nav-mobile-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-mobile-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ====== Hero ====== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 60px;
    background: var(--gradient-hero);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37,99,235,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
}

[data-theme="dark"] .hero-grid {
    background-image:
        linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.hero-glow-1 {
    width: 500px;
    height: 500px;
    background: rgba(37, 99, 235, 0.15);
    top: -100px;
    right: -100px;
}

.hero-glow-2 {
    width: 400px;
    height: 400px;
    background: rgba(124, 58, 237, 0.12);
    bottom: -80px;
    left: -80px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 760px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    padding: 6px 18px;
    border-radius: 24px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-logo {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 0 0 1px var(--border-light);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
}

.hero-title em {
    font-style: normal;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: 0.78rem;
    animation: float 2s ease-in-out infinite;
}

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

/* ====== 功能特色 ====== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: opacity var(--transition);
}

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

.feature-card:hover::before {
    opacity: 1;
}

.feature-card > * {
    position: relative;
    z-index: 1;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.feature-card > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

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

.feature-list li {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-left: 18px;
    position: relative;
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

/* ====== 精彩预览（宣传图） ====== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.gallery-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.gallery-placeholder {
    aspect-ratio: 9 / 19;
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-muted);
    transition: all var(--transition);
    cursor: default;
}

.gallery-placeholder:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.gallery-placeholder span {
    font-size: 0.85rem;
    font-weight: 500;
}

/* ====== 宣传视频 ====== */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.video-placeholder {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-alt));
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
    margin-bottom: 16px;
}

.video-placeholder:hover {
    border-color: var(--primary);
}

.video-play-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.35);
}

.video-placeholder:hover .video-play-btn {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.45);
}

.video-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.video-card h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}

.video-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ====== 下载 App ====== */
.download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 700px;
    margin: 0 auto;
}

.download-grid-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 1040px;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition);
}

.download-card-studio {
    border-color: rgba(124, 92, 255, 0.36);
    background: linear-gradient(180deg, rgba(124, 92, 255, 0.08), var(--bg-card) 58%);
}

.download-card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-lg);
}

.download-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text);
}

.download-card > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.download-version {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    padding: 3px 12px;
    background: var(--bg-alt);
    border-radius: 12px;
    display: inline-block;
}

.download-note {
    display: block;
    margin-top: 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ====== 关于我们 ====== */
.about-content {
    display: grid;
    grid-template-columns: 0.75fr 1.15fr 1fr;
    gap: 32px;
    align-items: start;
}

.about-logo-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
}

.about-logo-panel img {
    width: 100%;
    display: block;
    border-radius: var(--radius-md);
}

.about-text p {
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.85;
}

.about-text strong {
    color: var(--primary);
}

.about-info {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-light);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-size: 0.88rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.info-value {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    text-align: right;
}

.info-pending {
    color: var(--text-muted);
    font-style: italic;
    font-weight: 400;
}

/* ====== 页脚 ====== */
.footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 56px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-brand .logo-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 2px;
}

.footer-brand span:first-of-type {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: color var(--transition);
}

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

.footer-pending {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 8px;
}

.footer-icp {
    font-style: italic;
}

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

/* ====== 公司官网页 ====== */
.company-hero {
    min-height: 720px;
}

.company-hero-content {
    max-width: 920px;
}

.company-mark-large {
    width: min(220px, 52vw);
    margin: 0 auto 28px;
    padding: 18px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.company-mark-large img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.company-title {
    font-size: clamp(2.4rem, 6vw, 4.8rem);
}

.badge-text {
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 0.08em;
}

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

.company-card {
    min-height: 260px;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

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

.company-card-index {
    display: inline-flex;
    margin-bottom: 28px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.company-card h3 {
    margin-bottom: 12px;
    color: var(--text);
    font-size: 1.2rem;
}

.company-card p {
    color: var(--text-secondary);
    line-height: 1.85;
}

.company-info-card {
    max-width: 760px;
    margin: 0 auto;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.company-info-card .info-value[href]:hover {
    color: var(--primary);
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    max-width: 820px;
    margin: 0 auto;
}

.compliance-link {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.compliance-link:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.compliance-link span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.compliance-link strong {
    color: var(--text);
    font-size: 1.05rem;
}

.footer-grid-company {
    grid-template-columns: 2fr 1fr 1fr;
}

/* ====== 法律文本页 ====== */
.legal-page {
    padding: 120px 0 72px;
    background: var(--bg);
}

.legal-header {
    max-width: 840px;
    margin: 0 auto 32px;
    text-align: center;
}

.legal-header h1 {
    margin: 18px 0 12px;
    font-size: 2.4rem;
    line-height: 1.2;
}

.legal-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.legal-card {
    max-width: 920px;
    margin: 0 auto;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.legal-card section + section {
    margin-top: 32px;
}

.legal-card h2 {
    margin-bottom: 12px;
    font-size: 1.2rem;
    color: var(--text);
}

.legal-card p {
    margin: 10px 0;
    color: var(--text-secondary);
    line-height: 1.9;
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .about-content { grid-template-columns: 1fr; }
    .company-card-grid { grid-template-columns: 1fr; }
    .footer-grid-company { grid-template-columns: 1fr 1fr; }

    .hero-title { font-size: 3.2rem; }
}

@media (max-width: 768px) {
    .section { padding: 64px 0; }

    .nav-links { display: none; }
    .nav-mobile-btn { display: flex; }

    /* 移动端菜单展开 */
    .nav.open .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-glass);
        backdrop-filter: blur(16px);
        padding: 16px;
        border-bottom: 1px solid var(--border);
    }

    .hero { min-height: auto; padding: 100px 20px 60px; }
    .hero-title { font-size: 2.4rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-stats { gap: 16px; }
    .stat-divider { display: none; }
    .hero-badge { font-size: 0.75rem; }
    .hero-scroll { display: none; }

    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-placeholder { aspect-ratio: 9 / 16; }
    .videos-grid { grid-template-columns: 1fr; }
    .download-grid,
    .download-grid-three { grid-template-columns: 1fr; }
    .compliance-grid { grid-template-columns: 1fr; }
    .legal-page { padding-top: 96px; }
    .legal-card { padding: 28px; }

    .footer-grid { grid-template-columns: 1fr 1fr; }
    .section-header h2 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.9rem; }
    .company-title {
        font-size: 1.7rem;
        line-height: 1.28;
    }
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; }
    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .legal-header h1 { font-size: 1.9rem; }
    .company-info-card,
    .legal-card { padding: 22px; border-radius: var(--radius-lg); }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; }
}