/* ============================================
   DeskFlow 官网样式 - 重新设计
   参考: Linear, Raycast, Notion
   ============================================ */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    /* 更明亮的配色 - 深蓝紫渐变 */
    --bg-dark: #0f0f23;
    --bg-darker: #080816;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --bg-elevated: rgba(255, 255, 255, 0.05);
    
    --text-primary: #ffffff;
    --text-secondary: #b4b4c4;
    --text-muted: #8888a0;
    --text-dim: #6666780;
    
    --border: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.15);
    
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hero: linear-gradient(135deg, #1a1a3e 0%, #2d1b4e 50%, #1a2a4a 100%);
    --gradient-blue: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 100px rgba(99, 102, 241, 0.25);
    --shadow-glow-pink: 0 0 80px rgba(236, 72, 153, 0.2);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(180deg, #0f0f23 0%, #1a1a3e 50%, #0f0f23 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

/* ============================================
   导航栏
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(15, 15, 35, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.github-link:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
}

/* ============================================
   Hero 区域 - 全新设计
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
}

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

.hero-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 50% 30%, rgba(99, 102, 241, 0.2) 0%, transparent 70%),
        radial-gradient(ellipse 60% 40% at 80% 70%, rgba(236, 72, 153, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 20% 60%, rgba(6, 182, 212, 0.1) 0%, transparent 60%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 100% 80% at 50% 50%, black, transparent);
    opacity: 0.5;
}

.hero-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 270px;
    align-items: center;
    position: relative;
    z-index: 1;
}

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

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: var(--gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.hero-subtitle strong {
    color: var(--text-primary);
    font-weight: 500;
}

/* CTA 按钮 */
.hero-cta {
    display: flex;
    gap: 16px;
    margin-top: 8px;
}

.btn-primary-large {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: var(--gradient-purple);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.2s;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.5);
}

.btn-content {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.btn-main {
    font-size: 1rem;
}

.btn-sub {
    font-size: 0.75rem;
    opacity: 0.8;
}

.btn-secondary-large {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    background: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    font-weight: 500;
    transition: all 0.2s;
}

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

/* 信任指标 */
.hero-trust {
    display: flex;
    gap: 24px;
    margin-top: 8px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.trust-icon {
    color: var(--success);
    font-weight: bold;
}

/* Hero 右侧产品展示 */
.hero-product {
    position: relative;
}

.product-window {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.window-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-darker);
    border-bottom: 1px solid var(--border);
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.close { background: #ef4444; }
.control.minimize { background: #eab308; }
.control.maximize { background: #22c55e; }

.window-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: auto;
    margin-right: auto;
}

.window-content {
    display: flex;
    min-height: 320px;
}

.app-sidebar {
    width: 90px;
    background: rgba(0, 0, 0, 0.3);
    padding: 16px 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sidebar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-item.active {
    background: var(--primary);
}

.item-icon {
    font-size: 1.2rem;
}

.item-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.sidebar-item.active .item-text {
    color: white;
}

.app-main {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.today-label {
    font-weight: 600;
    font-size: 1rem;
}

.today-count {
    background: var(--primary);
    color: white;
    padding: 2px 10px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
}

.todo-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.todo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.todo:hover {
    background: rgba(255, 255, 255, 0.06);
}

.todo-check {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--text-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: transparent;
    flex-shrink: 0;
}

.todo.done .todo-check {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.todo-text {
    flex: 1;
    font-size: 0.95rem;
}

.todo.done .todo-text {
    color: var(--text-muted);
    text-decoration: line-through;
}

.todo-tag {
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
}

.todo-tag.high {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.todo-tag.medium {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

.add-todo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px dashed rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-sm);
    color: var(--primary-light);
    font-size: 0.9rem;
    margin-top: 8px;
}

.add-icon {
    font-size: 1.2rem;
}

/* 浮动小部件 */
.floating-widget {
    position: absolute;
    bottom: -30px;
    right: -40px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px;
    width: 200px;
    box-shadow: var(--shadow-md);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.widget-header {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.widget-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.habit-icon {
    font-size: 1rem;
}

.habit-check {
    margin-left: auto;
    width: 18px;
    height: 18px;
    border: 2px solid var(--text-dim);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
}

.habit-check.done {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

/* 滚动提示 */
.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

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

.scroll-arrow {
    font-size: 1.2rem;
}

/* ============================================
   特色展示区域
   ============================================ */

.showcase {
    padding: 100px 0;
    background: linear-gradient(180deg, rgba(15, 15, 35, 0.8) 0%, rgba(26, 26, 62, 0.6) 100%);
}

/* 双截图展示 */
.screenshots-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 60px;
}

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

.screenshot-frame {
    padding: 12px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(236, 72, 153, 0.08) 100%);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.screenshot-frame:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.screenshot-frame img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.4);
}

.screenshot-label {
    margin-top: 20px;
}

.screenshot-label h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
}

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

/* 功能亮点网格 */
.feature-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.highlight-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 24px 20px;
    text-align: center;
    transition: all 0.3s;
}

.highlight-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.highlight-visual {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.highlight-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.highlight-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 主题色点 */
.theme-dots {
    display: flex;
    gap: 12px;
}

.theme-dots span {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
}

.theme-dots span:hover {
    transform: scale(1.15);
}

/* 同步演示 */
.sync-visual {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
}

.sync-visual .arrow {
    font-size: 1rem;
    color: var(--primary-light);
    opacity: 0.7;
}

/* 快捷键演示 */
.hotkey-visual {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
}

.hotkey-visual kbd {
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-family: inherit;
    font-weight: 600;
}

.hotkey-visual span {
    color: var(--text-muted);
}

/* 习惯打卡演示 */
.habit-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.habit-visual .streak {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
}

.habit-visual .days {
    display: flex;
    gap: 4px;
}

.habit-visual .days span {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success);
    border-radius: 4px;
    font-size: 0.65rem;
    color: white;
}

/* 主题演示 */
.theme-demo {
    display: flex;
    gap: 16px;
}

.theme-dot {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
}

.theme-dot:hover {
    transform: scale(1.15);
}

/* 同步演示 */
.sync-demo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.8rem;
}

.sync-arrows {
    font-size: 1.2rem;
    color: var(--primary-light);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 快捷键演示 */
.hotkey-demo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.hotkey-demo kbd {
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    font-family: inherit;
    font-weight: 600;
    box-shadow: 0 2px 0 rgba(255, 255, 255, 0.1);
}

/* 习惯打卡演示 */
.habit-demo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.habit-streak {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
}

.habit-calendar {
    display: flex;
    gap: 6px;
}

.habit-calendar .day {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.habit-calendar .day.done {
    background: var(--success);
    color: white;
}

/* ============================================
   功能特性
   ============================================ */

.features {
    padding: 120px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 62, 0.3) 50%, transparent 100%);
}

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

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.1);
}

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

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   下载区域
   ============================================ */

.download {
    padding: 120px 0;
    background: linear-gradient(180deg, rgba(8, 8, 22, 0.8) 0%, rgba(15, 15, 35, 0.6) 100%);
}

.download-options {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 32px;
}

.download-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
    min-width: 300px;
}

.download-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.download-card.primary {
    background: var(--gradient-purple);
    border: none;
}

.download-card.primary:hover {
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.4);
}

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

.download-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.download-title {
    font-weight: 600;
    font-size: 1.1rem;
}

.download-desc {
    font-size: 0.85rem;
    opacity: 0.8;
}

.download-version {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
}

.system-req {
    display: flex;
    justify-content: center;
    gap: 32px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============================================
   更新日志
   ============================================ */

.changelog {
    padding: 120px 0;
}

.changelog-list {
    max-width: 700px;
    margin: 0 auto;
}

.changelog-item {
    display: flex;
    gap: 24px;
    padding-bottom: 40px;
}

.changelog-item:last-child {
    padding-bottom: 0;
}

.changelog-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.marker-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 3px solid var(--primary);
    flex-shrink: 0;
}

.changelog-item.latest .marker-dot {
    background: var(--primary);
}

.marker-line {
    width: 2px;
    flex: 1;
    background: var(--border);
    margin-top: 8px;
}

.changelog-content {
    flex: 1;
}

.changelog-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.version-badge {
    padding: 6px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--primary-light);
}

.version-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.latest-tag {
    padding: 3px 10px;
    background: var(--success);
    color: white;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.changelog-changes {
    list-style: none;
}

.changelog-changes li {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ============================================
   CTA 区域
   ============================================ */

.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    border-top: 1px solid var(--border);
}

.cta-content {
    text-align: center;
}

.cta h2 {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.cta p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* ============================================
   页脚
   ============================================ */

.footer {
    padding: 60px 0;
    border-top: 1px solid var(--border);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.footer-desc {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-links .divider {
    color: var(--text-dim);
}

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

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-tags {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-trust {
        justify-content: center;
    }
    
    .hero-product {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .floating-widget {
        display: none;
    }
    
    .features-grid,
    .highlight-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-options {
        flex-direction: column;
        align-items: center;
    }
    
    .download-card {
        width: 100%;
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid,
    .highlight-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .system-req {
        flex-direction: column;
        gap: 8px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn-primary-large,
    .btn-secondary-large {
        width: 100%;
        justify-content: center;
    }
}