/**
 * Topaz Video 主样式文件
 * 全新设计 - 现代、简洁、专业
 * 主题色: 黑色 #383838, 绿色 #98E704
 */

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

:root {
    --accent: #98E704;
    --accent-hover: #b0ff1a;
    --accent-dark: #7bc003;
    --accent-glow: rgba(152, 231, 4, 0.3);
    
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #383838;
    --bg-card: #2a2a2a;
    --bg-elevated: #303030;
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-default: rgba(255, 255, 255, 0.12);
    --border-accent: rgba(152, 231, 4, 0.4);
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #707070;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.5);
    --shadow-accent: 0 0 30px rgba(152, 231, 4, 0.2);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========== 导航栏 ========== */
.topaz-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 26, 0.9);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
}

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

.nav-logo img {
    height: 36px;
    width: auto;
}

.nav-brand-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-brand-text {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 48px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

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

.btn-trial {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    background: transparent;
    transition: all var(--transition-fast);
}

.btn-trial:hover {
    border-color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-buy {
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    background: var(--accent);
    color: #1a1a1a;
    transition: all var(--transition-fast);
}

.btn-buy:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-accent);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== 页脚 ========== */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 60px 0 40px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 16px;
}

.footer-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.footer-brand-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-brand-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
}

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

.footer-contact {
    display: flex;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-icon {
    width: 16px;
    height: 16px;
    color: var(--accent);
}

.contact-item a {
    font-size: 13px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--accent);
}

.footer-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: 32px 0;
}

.footer-bottom {
    text-align: center;
}

.footer-notice,
.footer-notice-en {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ========== Hero 动画关键帧 ========== */
@keyframes heroFadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes heroPulse {
    0%, 100% {
        opacity: 0.08;
        transform: translateX(-50%) scale(1);
    }
    50% {
        opacity: 0.12;
        transform: translateX(-50%) scale(1.05);
    }
}

@keyframes heroGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(152, 231, 4, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(152, 231, 4, 0.5);
    }
}

@keyframes floatParticle {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

@keyframes scanLine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

@keyframes textShimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

/* ========== Hero 区域 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 140px 32px 100px;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(152, 231, 4, 0.08) 0%, transparent 60%);
    pointer-events: none;
    animation: heroPulse 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(152, 231, 4, 0.3), transparent);
    animation: scanLine 4s ease-in-out infinite;
    pointer-events: none;
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    animation: floatParticle 4s ease-in-out infinite;
}

.hero-particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.hero-particle:nth-child(2) { left: 20%; top: 60%; animation-delay: 0.5s; }
.hero-particle:nth-child(3) { left: 80%; top: 30%; animation-delay: 1s; }
.hero-particle:nth-child(4) { left: 90%; top: 70%; animation-delay: 1.5s; }
.hero-particle:nth-child(5) { left: 50%; top: 80%; animation-delay: 2s; }
.hero-particle:nth-child(6) { left: 30%; top: 40%; animation-delay: 2.5s; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(152, 231, 4, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 40px;
    font-weight: 500;
    animation: heroFadeUp 0.8s ease-out, heroGlow 3s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(52px, 9vw, 88px);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 28px;
    letter-spacing: -0.02em;
    animation: heroFadeUp 0.8s ease-out 0.1s both;
    position: relative;
    z-index: 1;
}

.hero-title .accent {
    background: linear-gradient(90deg, var(--accent), #c4ff4d, var(--accent));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textShimmer 4s linear infinite;
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 22px);
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: 48px;
    line-height: 1.6;
    animation: heroFadeUp 0.8s ease-out 0.2s both;
    position: relative;
    z-index: 1;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    animation: heroFadeUp 0.8s ease-out 0.3s both;
    position: relative;
    z-index: 1;
}

.btn-primary {
    padding: 16px 36px;
    background: var(--accent);
    color: #1a1a1a;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.btn-secondary {
    padding: 16px 36px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(152, 231, 4, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn-secondary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-secondary:hover {
    border-color: var(--accent);
    background: transparent;
}

.hero-platforms {
    margin-top: 32px;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 20px;
    animation: heroFadeUp 0.8s ease-out 0.4s both;
    position: relative;
    z-index: 1;
}

.hero-platforms span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ========== 视频对比滑块 ========== */
.video-compare-section {
    padding: 100px 32px;
    background: var(--bg-secondary);
}

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

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

.compare-header h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
}

.compare-header p {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.compare-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    cursor: ew-resize;
    background: var(--bg-tertiary);
}

.compare-slider video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.compare-before {
    z-index: 1;
    clip-path: inset(0 50% 0 0);
}

.compare-after {
    z-index: 0;
}

.compare-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: var(--accent);
    z-index: 10;
    transform: translateX(-50%);
    cursor: ew-resize;
}

.compare-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: var(--shadow-accent);
}

.compare-handle::after {
    content: '⟷';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    color: #1a1a1a;
    font-weight: 700;
    z-index: 1;
}

.compare-label {
    position: absolute;
    top: 20px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 20;
}

.compare-label.before {
    left: 20px;
    color: var(--text-secondary);
}

.compare-label.after {
    right: 20px;
    background: var(--accent);
    color: #1a1a1a;
}

/* ========== 功能展示网格 ========== */
.features-grid-section {
    padding: 120px 32px;
    background: var(--bg-primary);
}

.features-grid-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(152, 231, 4, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

.features-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.feature-tab {
    padding: 14px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.feature-tab:hover {
    border-color: var(--border-default);
    color: var(--text-primary);
}

.feature-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a1a;
}

.feature-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.feature-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
}

.feature-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.feature-stats {
    display: flex;
    gap: 40px;
}

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

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
}

.feature-video-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* ========== 视频对比画廊 ========== */
.compare-gallery {
    padding: 120px 32px;
    background: var(--bg-secondary);
}

.gallery-container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.gallery-item {
    position: relative;
    aspect-ratio: 16/10;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.gallery-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.gallery-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

.gallery-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    background: var(--accent);
    color: #1a1a1a;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

/* ========== 大型视频对比展示 ========== */
.showcase-section {
    padding: 120px 32px;
    background: var(--bg-primary);
}

.showcase-container {
    max-width: 1400px;
    margin: 0 auto;
}

.showcase-item {
    margin-bottom: 120px;
}

.showcase-item:last-child {
    margin-bottom: 0;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.showcase-video {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-tertiary);
}

.showcase-video video {
    width: 100%;
    display: block;
}

.showcase-video-label {
    position: absolute;
    bottom: 16px;
    left: 16px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.showcase-video.after .showcase-video-label {
    background: var(--accent);
    color: #1a1a1a;
}

.showcase-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 0;
}

.showcase-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(152, 231, 4, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    width: fit-content;
}

.showcase-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.showcase-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 信任品牌 ========== */
.trusted-section {
    padding: 80px 32px;
    background: var(--bg-tertiary);
}

.trusted-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.trusted-title {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 40px;
}

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

.trusted-logo {
    height: 56px;
    width: auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    opacity: 0.9;
    transition: all var(--transition-fast);
}

.trusted-logo:hover {
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* ========== 引用区域 ========== */
.quote-section {
    padding: 120px 32px;
    background: var(--bg-primary);
    position: relative;
}

.quote-section::before {
    content: '"';
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 200px;
    color: var(--accent);
    opacity: 0.1;
    font-family: Georgia, serif;
    line-height: 1;
}

.quote-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.quote-text {
    font-size: clamp(22px, 3vw, 32px);
    line-height: 1.5;
    margin-bottom: 40px;
    color: var(--text-primary);
    font-weight: 500;
}

.quote-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.quote-avatar {
    width: 56px;
    height: 56px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
}

.quote-info {
    text-align: left;
}

.quote-name {
    font-size: 16px;
    font-weight: 600;
}

.quote-role {
    font-size: 14px;
    color: var(--text-muted);
}

/* ========== 渲染选项 ========== */
.render-section {
    padding: 120px 32px;
    background: var(--bg-secondary);
}

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

.render-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.render-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.render-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-accent);
}

.render-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.render-content {
    padding: 32px;
}

.render-icon {
    width: 48px;
    height: 48px;
    background: rgba(152, 231, 4, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--accent);
}

.render-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.render-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 用户类型 ========== */
.users-section {
    padding: 120px 32px;
    background: var(--bg-primary);
}

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

.users-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.user-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

.user-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.user-icon {
    width: 64px;
    height: 64px;
    background: rgba(152, 231, 4, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--accent);
}

.user-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 12px;
}

.user-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== 最新功能 ========== */
.latest-section {
    padding: 120px 32px;
    background: var(--bg-secondary);
}

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

.latest-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.latest-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.latest-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-6px);
}

.latest-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.latest-content {
    padding: 28px;
}

.latest-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent);
}

.latest-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 所有功能 ========== */
.all-features-section {
    padding: 120px 32px;
    background: var(--bg-primary);
}

.all-features-container {
    max-width: 1200px;
    margin: 0 auto;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
}

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

.feature-group-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent);
}

.feature-group-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.feature-group-items {
    list-style: none;
}

.feature-group-items li {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 10px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.feature-group-items li strong {
    color: var(--text-primary);
}

/* ========== 评价 ========== */
.reviews-section {
    padding: 120px 32px;
    background: var(--bg-secondary);
}

.reviews-container {
    max-width: 1400px;
    margin: 0 auto;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition-normal);
}

.review-card:hover {
    border-color: var(--border-accent);
}

.review-stars {
    color: var(--accent);
    margin-bottom: 16px;
    font-size: 16px;
    letter-spacing: 2px;
}

.review-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.review-author {
    font-size: 14px;
    font-weight: 600;
}

.review-source {
    font-size: 12px;
    color: var(--text-muted);
}

/* ========== 定价 ========== */
.pricing-section {
    padding: 120px 32px;
    background: var(--bg-primary);
}

.pricing-container {
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 60px;
}

.pricing-toggle-btn {
    padding: 14px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pricing-toggle-btn:hover {
    border-color: var(--border-default);
}

.pricing-toggle-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a1a;
}

.pricing-product-header {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.pricing-product-logo {
    height: 40px;
    width: auto;
}

.pricing-product-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 40px;
    position: relative;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--border-accent);
}

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: var(--shadow-accent);
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--accent);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    color: #1a1a1a;
}

.pricing-name {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.pricing-price {
    margin-bottom: 28px;
}

.price-original {
    font-size: 16px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-right: 8px;
}

.price-current {
    font-size: 40px;
    font-weight: 700;
    color: var(--accent);
}

.price-period {
    font-size: 14px;
    color: var(--text-muted);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    font-size: 16px;
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 16px;
    background: var(--accent);
    color: #1a1a1a;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pricing-btn:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-accent);
}

/* ========== FAQ ========== */
.faq-section {
    padding: 120px 32px;
    background: var(--bg-secondary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all var(--transition-fast);
}

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

.faq-item.active {
    border-color: var(--border-accent);
}

.faq-question {
    width: 100%;
    padding: 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    font-size: 24px;
    color: var(--accent);
    transition: transform var(--transition-fast);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

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

.faq-answer-content {
    padding: 0 24px 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-link {
    color: var(--accent);
    transition: color var(--transition-fast);
}

.faq-link:hover {
    color: var(--accent-hover);
}

/* ========== CTA ========== */
.cta-section {
    padding: 140px 32px;
    background: var(--bg-tertiary);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1200px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(152, 231, 4, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.cta-title .accent {
    color: var(--accent);
}

.cta-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.7;
}

.cta-image {
    max-width: 600px;
    margin: 48px auto 0;
    border-radius: var(--radius-lg);
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .feature-showcase {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    
    .render-grid {
        grid-template-columns: 1fr;
    }
    
    .users-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .latest-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-subtle);
        padding: 24px 32px;
        flex-direction: column;
        gap: 24px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    
    .nav-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-trial,
    .btn-buy {
        width: 100%;
        text-align: center;
    }
    
    .hero {
        padding: 120px 24px 80px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .hero-platforms {
        flex-direction: column;
        gap: 8px;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .users-grid {
        grid-template-columns: 1fr;
    }
    
    .latest-grid {
        grid-template-columns: 1fr;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-contact {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 28px;
    }
    
    .pricing-card {
        padding: 28px;
    }
    
    .price-current {
        font-size: 32px;
    }
    
    .compare-handle::before {
        width: 40px;
        height: 40px;
    }
}

/* ========== 视频对比模态框 ========== */
.gallery-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.gallery-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 1200px;
    z-index: 1;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.gallery-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a1a;
}

.modal-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    cursor: ew-resize;
    background: var(--bg-tertiary);
}

.modal-slider video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-before {
    z-index: 1;
    clip-path: inset(0 50% 0 0);
}

.modal-after {
    z-index: 0;
}

.modal-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: var(--accent);
    z-index: 10;
    transform: translateX(-50%);
    cursor: ew-resize;
}

.modal-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: var(--shadow-accent);
}

.modal-handle::after {
    content: '⟷';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: #1a1a1a;
    font-weight: 700;
    z-index: 1;
}

.modal-slider .compare-label {
    z-index: 20;
}

@media (max-width: 768px) {
    .modal-close {
        top: -48px;
        right: 0;
    }
    
    .modal-handle::before {
        width: 44px;
        height: 44px;
    }
}

/* ========== 系统需求页面样式 ========== */
.page-hero {
    padding: 160px 32px 80px;
    background: var(--bg-primary);
    text-align: center;
    position: relative;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(152, 231, 4, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.page-hero-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: clamp(40px, 6vw, 56px);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.requirements-section {
    padding: 80px 32px;
    background: var(--bg-primary);
}

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

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

.section-header-left {
    margin-bottom: 48px;
}

.section-title-left {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    margin-bottom: 12px;
}

.section-desc-left {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
}

.notice-box {
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.notice-box h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent);
}

.notice-list {
    list-style: none;
    margin-bottom: 20px;
}

.notice-list li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
    font-size: 14px;
}

.notice-list li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: #ff6b6b;
    font-weight: 700;
}

.notice-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    padding-top: 16px;
    border-top: 1px solid var(--border-subtle);
}

.compatibility-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.compatibility-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
}

.compatibility-card:hover {
    border-color: var(--border-accent);
}

.compatibility-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.compatibility-header svg {
    color: var(--accent);
}

.compatibility-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.compatibility-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.step-item {
    display: flex;
    gap: 16px;
}

.step-number {
    width: 32px;
    height: 32px;
    background: rgba(152, 231, 4, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--accent);
    padding: 8px 16px;
    background: rgba(152, 231, 4, 0.1);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.step-link:hover {
    background: rgba(152, 231, 4, 0.2);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.specs-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
}

.specs-card:hover {
    border-color: var(--border-accent);
}

.specs-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-subtle);
}

.specs-header svg {
    color: var(--accent);
}

.specs-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.specs-table tr {
    border-bottom: 1px solid var(--border-subtle);
}

.specs-table tr:last-child {
    border-bottom: none;
}

.specs-table td {
    padding: 12px 0;
    font-size: 14px;
}

.specs-table td:first-child {
    color: var(--text-muted);
    width: 40%;
}

.specs-table td:last-child {
    color: var(--text-primary);
}

.specs-table sup {
    color: var(--accent);
    font-weight: 600;
}

.specs-notes {
    padding-top: 16px;
    border-top: 1px solid var(--border-subtle);
}

.specs-notes p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 8px;
}

.specs-notes p:last-child {
    margin-bottom: 0;
}

.specs-notes sup {
    color: var(--accent);
    font-weight: 600;
}

.inline-link {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.inline-link:hover {
    color: var(--accent-hover);
}

.starlight-section {
    margin-bottom: 60px;
}

.starlight-section:last-child {
    margin-bottom: 0;
}

.starlight-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--accent);
}

.starlight-learn-more {
    margin-top: 24px;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

@media (max-width: 768px) {
    .compatibility-grid,
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .page-hero {
        padding: 120px 24px 60px;
    }
    
    .requirements-section {
        padding: 60px 24px;
    }
}

/* ========== 下载页面样式 ========== */
.downloads-section {
    padding: 80px 32px;
    background: var(--bg-primary);
}

.downloads-container {
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 32px;
    transition: all var(--transition-normal);
}

.download-card:last-child {
    margin-bottom: 0;
}

.download-card:hover {
    border-color: var(--border-default);
}

.download-card.featured {
    border-color: var(--border-accent);
    background: linear-gradient(135deg, rgba(152, 231, 4, 0.05) 0%, var(--bg-card) 100%);
}

.download-card-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.download-logo {
    width: 64px;
    height: 64px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.download-info {
    flex: 1;
}

.download-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.download-tagline {
    font-size: 14px;
    color: var(--text-secondary);
}

.download-card-body {
    margin-bottom: 24px;
}

.download-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.download-requirements-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--accent);
    transition: all var(--transition-fast);
}

.download-requirements-link:hover {
    color: var(--accent-hover);
}

.download-card-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.download-btn.mac {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.download-btn.mac:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--text-secondary);
}

.download-btn.windows {
    background: var(--accent);
    color: #1a1a1a;
}

.download-btn.windows:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.download-btn.snapdragon {
    background: rgba(152, 231, 4, 0.1);
    color: var(--accent);
    border: 1px solid var(--border-accent);
}

.download-btn.snapdragon:hover {
    background: rgba(152, 231, 4, 0.2);
}

.downloads-notice-section {
    padding: 0 32px 80px;
    background: var(--bg-primary);
}

.downloads-notice {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.downloads-notice svg {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.downloads-notice-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.downloads-notice-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .downloads-section {
        padding: 60px 24px;
    }
    
    .download-card-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .download-card-footer {
        flex-direction: column;
    }
    
    .download-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ========== 支持页面样式 ========== */
.support-section {
    padding: 80px 32px;
    background: var(--bg-primary);
}

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

.support-container {
    max-width: 1000px;
    margin: 0 auto;
}

.support-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
}

.support-hero-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 40px;
    display: flex;
    gap: 24px;
    transition: all var(--transition-normal);
}

.support-hero-card:hover {
    border-color: var(--border-default);
}

.support-hero-card.primary {
    border-color: var(--border-accent);
    background: linear-gradient(135deg, rgba(152, 231, 4, 0.08) 0%, var(--bg-card) 100%);
}

.support-hero-icon {
    width: 72px;
    height: 72px;
    background: rgba(152, 231, 4, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.support-hero-card.primary .support-hero-icon {
    background: var(--accent);
}

.support-hero-icon svg {
    color: var(--accent);
}

.support-hero-card.primary .support-hero-icon svg {
    color: #1a1a1a;
}

.support-hero-content h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
}

.support-hero-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.support-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.support-btn.primary {
    background: var(--accent);
    color: #1a1a1a;
}

.support-btn.primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.support-btn.secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.support-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

/* 资源网格 */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.resource-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    transition: all var(--transition-normal);
    display: block;
}

.resource-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.resource-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: rgba(152, 231, 4, 0.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.resource-icon svg {
    color: var(--accent);
}

.resource-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.resource-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
}

.resource-card:hover .resource-link {
    gap: 10px;
}

/* 支持页 FAQ */
.support-faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

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

.support-faq-item.active {
    border-color: var(--border-accent);
}

.support-faq-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: color var(--transition-fast);
}

.support-faq-question:hover {
    color: var(--accent);
}

.support-faq-icon {
    font-size: 20px;
    color: var(--accent);
    transition: transform var(--transition-fast);
}

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

.support-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

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

.support-faq-answer p {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 联系方式网格 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: all var(--transition-normal);
}

.contact-card:hover {
    border-color: var(--border-default);
}

.contact-card.featured {
    border-color: var(--border-accent);
    background: linear-gradient(135deg, rgba(152, 231, 4, 0.05) 0%, var(--bg-card) 100%);
}

.contact-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: rgba(152, 231, 4, 0.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-card.featured .contact-card-icon {
    background: var(--accent);
}

.contact-card-icon svg {
    color: var(--accent);
}

.contact-card.featured .contact-card-icon svg {
    color: #1a1a1a;
}

.contact-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.contact-link {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    transition: all var(--transition-fast);
}

.contact-link:hover {
    color: var(--accent-hover);
}

.contact-link.primary {
    padding: 10px 24px;
    background: var(--accent);
    color: #1a1a1a;
    border-radius: var(--radius-md);
}

.contact-link.primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

/* 帮助中心底部 */
.help-center-footer {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
}

.back-home-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.back-home-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.back-home-link svg {
    transition: transform var(--transition-fast);
}

.back-home-link:hover svg {
    transform: translateX(-4px);
}

@media (max-width: 992px) {
    .resource-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .support-section {
        padding: 60px 24px;
    }
    
    .support-hero-grid {
        grid-template-columns: 1fr;
    }
    
    .support-hero-card {
        flex-direction: column;
        padding: 28px;
    }
    
    .resource-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}