/**
 * Topaz Photo 主样式文件
 * 全新设计 - 现代、简洁、专业
 * 主题色: 黑色 #383838, 蓝色 #2D81FF
 */

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

:root {
    --accent: #2D81FF;
    --accent-hover: #5a9dff;
    --accent-dark: #1a5fc9;
    --accent-glow: rgba(45, 129, 255, 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(45, 129, 255, 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(45, 129, 255, 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: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.nav-brand-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-left: 8px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
}

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

.btn-trial {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-trial:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-secondary);
}

.btn-buy {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    background: var(--accent);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

/* 汉堡菜单 */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.hamburger-line {
    width: 22px;
    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);
}

@media (max-width: 768px) {
    .nav-hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(26, 26, 26, 0.98);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        padding: 24px;
        flex-direction: column;
        gap: 24px;
        border-bottom: 1px solid var(--border-subtle);
        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;
        width: 100%;
    }
    
    .nav-link {
        padding: 12px 16px;
        width: 100%;
    }
    
    .nav-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .btn-trial, .btn-buy {
        width: 100%;
        text-align: center;
    }
}

/* ========== 页脚 ========== */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 48px 32px 32px;
}

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

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    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: 700;
    color: var(--text-primary);
}

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

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

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

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

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

.footer-divider {
    height: 1px;
    background: var(--border-subtle);
    margin-bottom: 24px;
}

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

.footer-notice {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.footer-notice-en {
    font-size: 11px;
    color: var(--text-muted);
    opacity: 0.7;
}

@media (max-width: 768px) {
    .footer-main {
        flex-direction: column;
        gap: 24px;
    }
    
    .footer-contact {
        flex-direction: column;
        gap: 16px;
    }
}

/* ========== Hero 区域 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 32px 80px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1200px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(45, 129, 255, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

/* 背景动画效果容器 */
.hero-bg-effects {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

/* 浮动光效 */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: glowFloat 8s ease-in-out infinite;
}

.hero-glow-1 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: -100px;
    left: 10%;
    animation-delay: 0s;
}

.hero-glow-2 {
    width: 300px;
    height: 300px;
    background: #5a9dff;
    top: 50%;
    right: 5%;
    animation-delay: 2s;
}

.hero-glow-3 {
    width: 250px;
    height: 250px;
    background: #00d4ff;
    bottom: 10%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes glowFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(30px, -20px) scale(1.1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-20px, 30px) scale(0.9);
        opacity: 0.4;
    }
    75% {
        transform: translate(20px, 20px) scale(1.05);
        opacity: 0.35;
    }
}

/* 扫描线效果 */
.hero-scanline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.6;
    animation: scanMove 4s linear infinite;
}

@keyframes scanMove {
    0% {
        top: 0;
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        top: 100%;
        opacity: 0;
    }
}

/* 像素网格 */
.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(45, 129, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 129, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridPulse 4s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* 浮动粒子 */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.4;
    box-shadow: 0 0 10px var(--accent);
    animation: floatParticle 12s infinite ease-in-out;
}

.hero-particle:nth-child(1) { left: 5%; top: 20%; animation-delay: 0s; width: 4px; height: 4px; }
.hero-particle:nth-child(2) { left: 15%; top: 65%; animation-delay: 1.5s; width: 8px; height: 8px; }
.hero-particle:nth-child(3) { left: 75%; top: 25%; animation-delay: 3s; width: 5px; height: 5px; }
.hero-particle:nth-child(4) { left: 85%; top: 70%; animation-delay: 4.5s; width: 7px; height: 7px; }
.hero-particle:nth-child(5) { left: 45%; top: 85%; animation-delay: 6s; width: 4px; height: 4px; }
.hero-particle:nth-child(6) { left: 92%; top: 35%; animation-delay: 7.5s; width: 6px; height: 6px; }
.hero-particle:nth-child(7) { left: 25%; top: 40%; animation-delay: 9s; width: 5px; height: 5px; }
.hero-particle:nth-child(8) { left: 60%; top: 15%; animation-delay: 10.5s; width: 8px; height: 8px; }

@keyframes floatParticle {
    0%, 100% { 
        transform: translateY(0) scale(1); 
        opacity: 0.4; 
    }
    25% {
        transform: translateY(-20px) translateX(10px) scale(1.2);
        opacity: 0.7;
    }
    50% { 
        transform: translateY(-40px) translateX(-5px) scale(1.5); 
        opacity: 0.5; 
    }
    75% {
        transform: translateY(-20px) translateX(15px) scale(1.3);
        opacity: 0.6;
    }
}

/* AI 处理指示器 */
.hero-ai-indicators {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.ai-indicator {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(45, 129, 255, 0.1);
    border: 1px solid rgba(45, 129, 255, 0.3);
    border-radius: 100px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    opacity: 0;
    animation: indicatorFloat 6s ease-in-out infinite;
}

.ai-indicator-1 {
    top: 25%;
    left: 8%;
    animation-delay: 0s;
}

.ai-indicator-2 {
    top: 35%;
    right: 10%;
    animation-delay: 1.5s;
}

.ai-indicator-3 {
    bottom: 30%;
    left: 12%;
    animation-delay: 3s;
}

.ai-indicator-4 {
    bottom: 25%;
    right: 8%;
    animation-delay: 4.5s;
}

.ai-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: dotPulse 1.5s ease-in-out infinite;
}

.ai-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.5px;
}

@keyframes indicatorFloat {
    0%, 100% {
        opacity: 0;
        transform: translateY(10px);
    }
    20%, 80% {
        opacity: 0.8;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(-5px);
    }
}

@keyframes dotPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(45, 129, 255, 0.5);
    }
    50% {
        transform: scale(1.2);
        box-shadow: 0 0 0 8px rgba(45, 129, 255, 0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(45, 129, 255, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-title .accent {
    color: var(--accent);
    background: linear-gradient(135deg, var(--accent) 0%, #5a9dff 50%, var(--accent) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 600;
    color: #ffffff;
    background: var(--accent);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--text-secondary);
}

.hero-platforms {
    display: flex;
    gap: 24px;
    margin-top: 48px;
    font-size: 13px;
    color: var(--text-muted);
    animation: fadeInUp 0.8s ease 0.8s forwards;
    opacity: 0;
}

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

.hero-platforms svg {
    color: var(--text-secondary);
}

/* ========== 通用区域样式 ========== */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(45, 129, 255, 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-top: 16px;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== 视频对比滑块 ========== */
.video-compare-section {
    padding: 80px 32px;
    background: var(--bg-primary);
}

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

.compare-header {
    text-align: center;
    margin-bottom: 48px;
}

.compare-header h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.compare-header p {
    color: var(--text-secondary);
}

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

.compare-slider video,
.compare-slider img {
    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%);
    color: #1a1a1a;
    font-size: 20px;
    font-weight: 700;
    z-index: 1;
}

.compare-label {
    position: absolute;
    top: 16px;
    padding: 6px 14px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 5;
}

.compare-label.before {
    left: 16px;
}

.compare-label.after {
    right: 16px;
}

/* ========== 信任品牌 ========== */
.trusted-section {
    padding: 64px 32px;
    background: var(--bg-secondary);
}

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

.trusted-title {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.trusted-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.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;
    filter: grayscale(0%) brightness(1);
}

/* ========== 功能网格 ========== */
.features-grid-section {
    padding: 100px 32px;
    background: var(--bg-primary);
}

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

.features-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.feature-tab {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.feature-content {
    display: none;
}

.feature-content.active {
    display: block;
}

.feature-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.feature-info h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-info p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

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

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
}

.feature-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
}

/* 功能对比滑块 */
.feature-compare {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: ew-resize;
    background: var(--bg-tertiary);
}

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

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

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

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

.feature-compare .compare-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: var(--shadow-accent);
}

.feature-compare .compare-handle::after {
    content: '⟷';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #1a1a1a;
    font-size: 16px;
    font-weight: 700;
    z-index: 1;
}

.feature-compare .compare-label {
    position: absolute;
    top: 12px;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 5;
}

.feature-compare .compare-label.before {
    left: 12px;
}

.feature-compare .compare-label.after {
    right: 12px;
}

@media (max-width: 768px) {
    .feature-showcase {
        grid-template-columns: 1fr;
    }
}

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

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

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

.gallery-item {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-card);
}

.gallery-item video,
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.gallery-item:hover video,
.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.gallery-item-title {
    font-size: 14px;
    font-weight: 600;
}

@media (max-width: 768px) {
    .video-gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 渲染选项 ========== */
.render-section {
    padding: 100px 32px;
    background: var(--bg-primary);
}

.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-lg);
    padding: 40px;
    transition: all var(--transition-normal);
}

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

.render-icon {
    width: 56px;
    height: 56px;
    background: rgba(45, 129, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.render-icon svg {
    width: 28px;
    height: 28px;
    color: var(--accent);
}

.render-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.render-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.render-image {
    margin-top: 24px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

@media (max-width: 768px) {
    .render-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 用户类型 ========== */
.users-section {
    padding: 100px 32px;
    background: var(--bg-secondary);
}

.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;
    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(45, 129, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.user-icon svg {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

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

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

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

@media (max-width: 576px) {
    .users-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 工作流集成 ========== */
.workflow-section {
    padding: 100px 32px;
    background: var(--bg-primary);
}

.workflow-container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.workflow-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-top: 48px;
}

.workflow-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    min-width: 140px;
}

.workflow-item:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.workflow-item span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* ========== 评价区域 ========== */
.reviews-section {
    padding: 100px 32px;
    background: var(--bg-secondary);
}

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

.reviews-header {
    text-align: center;
    margin-bottom: 48px;
}

.reviews-header h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.reviews-header p {
    color: var(--text-secondary);
}

.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;
}

.review-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.review-stars svg {
    width: 16px;
    height: 16px;
    fill: var(--accent);
}

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

.review-author {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

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

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

@media (max-width: 576px) {
    .reviews-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 定价区域 ========== */
.pricing-section {
    padding: 100px 32px;
    background: var(--bg-primary);
}

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

.pricing-toggle {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    background: var(--bg-card);
    padding: 6px;
    border-radius: var(--radius-md);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.pricing-toggle-btn {
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.pricing-product-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
    grid-column: 1 / -1;
}

.pricing-product-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

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

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition-normal);
}

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

.pricing-card.featured {
    border-color: var(--accent);
    position: relative;
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--accent);
    color: #1a1a1a;
    font-size: 12px;
    font-weight: 700;
    border-radius: 100px;
}

.pricing-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pricing-price {
    margin-bottom: 24px;
}

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

.price-current {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent);
}

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

.pricing-features {
    list-style: none;
    margin-bottom: 28px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    color: #1a1a1a;
    background: var(--accent);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== FAQ ========== */
.faq-section {
    padding: 100px 32px;
    background: var(--bg-secondary);
}

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

.faq-item {
    border-bottom: 1px solid var(--border-subtle);
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: color var(--transition-fast);
}

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

.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: 500px;
}

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

/* ========== CTA ========== */
.cta-section {
    padding: 100px 32px;
    background: var(--bg-primary);
    text-align: center;
}

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

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

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

.cta-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

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

/* ========== 最新功能区域 ========== */
.latest-section {
    padding: 100px 32px;
    background: var(--bg-secondary);
}

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

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

.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(-4px);
}

.latest-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.latest-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.latest-card-content {
    padding: 24px;
}

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

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

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

@media (max-width: 576px) {
    .latest-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 所有功能区域 ========== */
.all-features-section {
    padding: 100px 32px;
    background: var(--bg-primary);
}

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

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

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

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

.all-feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent);
}

.all-feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

@media (max-width: 576px) {
    .all-features-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 页面标题样式 ========== */
.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(45, 129, 255, 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;
}

/* ========== 系统需求页面样式 ========== */
.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(45, 129, 255, 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(45, 129, 255, 0.1);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.step-link:hover {
    background: rgba(45, 129, 255, 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);
}

.intel-warning {
    margin-top: 32px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.intel-warning h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #ff6b6b;
}

.intel-warning .notice-list li::before {
    content: '⚠';
    color: #ffb347;
}

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

.faq-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.faq-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent);
}

.faq-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

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

.faq-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.faq-card ul li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    font-size: 14px;
    color: var(--text-secondary);
}

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

@media (max-width: 768px) {
    .compatibility-grid,
    .specs-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .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(45, 129, 255, 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(45, 129, 255, 0.1);
    color: var(--accent);
    border: 1px solid var(--border-accent);
}

.download-btn.snapdragon:hover {
    background: rgba(45, 129, 255, 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;
    }
}

/* ========== 帮助中心区域 ========== */
.help-center-section {
    padding: 80px 32px 100px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

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

.help-center-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.help-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);
    position: relative;
    overflow: hidden;
}

.help-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

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

.help-card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: rgba(45, 129, 255, 0.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.help-card:hover .help-card-icon {
    background: rgba(45, 129, 255, 0.15);
    transform: scale(1.05);
}

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

.help-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

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

.help-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    transition: all var(--transition-fast);
}

.help-card-link:hover {
    gap: 12px;
    color: var(--accent-hover);
}

.help-card-link svg {
    transition: transform var(--transition-fast);
}

.help-card-link:hover svg {
    transform: translateX(4px);
}

.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: 768px) {
    .help-center-section {
        padding: 60px 24px 80px;
    }
    
    .help-center-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .help-card {
        padding: 24px;
    }
}

/* ========== 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(45, 129, 255, 0.08) 0%, var(--bg-card) 100%);
}

.support-hero-icon {
    width: 72px;
    height: 72px;
    background: rgba(45, 129, 255, 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(45, 129, 255, 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(45, 129, 255, 0.05) 0%, var(--bg-card) 100%);
}

.contact-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: rgba(45, 129, 255, 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);
}

@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;
    }
}