/* ============================================
   个人展示网站 - 全局样式
   风格：科技风 + IOS26高级质感
   支持：亮色/暗黑双模式
   ============================================ */

/* CSS变量定义 - 亮色模式（默认） */
:root {
    /* 主色调 */
    --primary: #007AFF;
    --primary-light: #5AC8FA;
    --primary-dark: #0051D5;
    
    /* 背景色 */
    --bg-primary: #F5F5F7;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #E8E8ED;
    --bg-elevated: rgba(255, 255, 255, 0.8);
    
    /* 文字色 */
    --text-primary: #1D1D1F;
    --text-secondary: #6E6E73;
    --text-tertiary: #A1A1A6;
    --text-inverse: #FFFFFF;
    
    /* 边框与分隔线 */
    --border: rgba(0, 0, 0, 0.1);
    --border-light: rgba(0, 0, 0, 0.05);
    --divider: rgba(0, 0, 0, 0.06);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(0, 122, 255, 0.3);
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #007AFF 0%, #5AC8FA 100%);
    --gradient-hero: linear-gradient(135deg, #5856D6 0%, #007AFF 50%, #5AC8FA 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.6) 100%);
    
    /* 圆角 - IOS26风格 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    
    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;
    
    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, monospace;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.35s ease;
    
    /* 导航栏高度 */
    --nav-height: 72px;
    --nav-height-scrolled: 56px;
}

/* 暗黑模式 */
[data-theme="dark"] {
    /* 主色调 */
    --primary: #0A84FF;
    --primary-light: #64D2FF;
    --primary-dark: #0055D4;
    
    /* 背景色 */
    --bg-primary: #000000;
    --bg-secondary: #1C1C1E;
    --bg-tertiary: #2C2C2E;
    --bg-elevated: rgba(28, 28, 30, 0.8);
    
    /* 文字色 */
    --text-primary: #FFFFFF;
    --text-secondary: #98989D;
    --text-tertiary: #636366;
    --text-inverse: #1D1D1F;
    
    /* 边框与分隔线 */
    --border: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
    --divider: rgba(255, 255, 255, 0.08);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(10, 132, 255, 0.4);
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0A84FF 0%, #64D2FF 100%);
    --gradient-hero: linear-gradient(135deg, #5E5CE6 0%, #0A84FF 50%, #64D2FF 100%);
    --gradient-card: linear-gradient(180deg, rgba(44,44,46,0.9) 0%, rgba(28,28,30,0.6) 100%);
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    min-height: 100vh;
}

/* 选择文本颜色 */
::selection {
    background-color: var(--primary);
    color: var(--text-inverse);
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: var(--bg-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: height var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
    height: var(--nav-height-scrolled);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

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

/* 导航链接 */
.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    padding: var(--space-xs);
    border-radius: var(--radius-full);
}

.nav-link {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

/* 主题切换按钮 */
.theme-toggle {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    position: absolute;
    transition: all var(--transition-base);
}

.sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.moon-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .sun-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

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

/* ============================================
   主内容区
   ============================================ */
.main-content {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    padding-bottom: var(--space-4xl);
    min-height: calc(100vh - 80px);
}

/* ============================================
   Hero区域
   ============================================ */
.hero {
    position: relative;
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    overflow: hidden;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.05em;
}

/* Hero背景光效 */
.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--primary-light);
    bottom: -50px;
    right: -50px;
    animation-delay: -3s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -6s;
    opacity: 0.3;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* ============================================
   通用区块
   ============================================ */
.section {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-xl);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* 查看全部按钮 */
.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    background: transparent;
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.view-all-btn:hover {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
    transform: translateX(4px);
}

.view-all-btn svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.view-all-btn:hover svg {
    transform: translateX(4px);
}

/* ============================================
   作品卡片
   ============================================ */
.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.works-grid.compact {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
}

.works-grid.four-col {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .works-grid.four-col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .works-grid,
    .works-grid.compact,
    .works-grid.four-col {
        grid-template-columns: 1fr;
    }
}

.work-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    cursor: pointer;
}

.work-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.work-image {
    aspect-ratio: 16 / 10;
    background: var(--gradient-card);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.work-placeholder {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-weight: 500;
}

.work-info {
    padding: var(--space-lg);
}

.work-category {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.work-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.work-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.work-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.work-link:hover {
    gap: var(--space-sm);
}

.work-link svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   平台入口
   ============================================ */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.platforms-grid.compact {
    grid-template-columns: repeat(4, 1fr);
    max-width: 600px;
}

@media (max-width: 768px) {
    .platforms-grid,
    .platforms-grid.compact {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 首页平台图标 */
.platform-icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    cursor: pointer;
}

.platform-icon-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.platform-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.platform-icon svg {
    width: 28px;
    height: 28px;
}

.platform-icon.xiaohongshu {
    background: linear-gradient(135deg, #FF2442 0%, #FF6B7A 100%);
}

.platform-icon.wechat {
    background: linear-gradient(135deg, #07C160 0%, #4ECF7E 100%);
}

.platform-icon.bilibili {
    background: linear-gradient(135deg, #00A1D6 0%, #5BC9E8 100%);
}

.platform-icon.douyin {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
}

[data-theme="dark"] .platform-icon.douyin {
    background: linear-gradient(135deg, #333333 0%, #666666 100%);
}

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

/* 博客页平台卡片 */
.platform-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.platform-card:hover .platform-qr {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.platform-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.platform-icon-large {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.platform-icon-large svg {
    width: 32px;
    height: 32px;
}

.platform-icon-large.xiaohongshu {
    background: linear-gradient(135deg, #FF2442 0%, #FF6B7A 100%);
}

.platform-icon-large.wechat {
    background: linear-gradient(135deg, #07C160 0%, #4ECF7E 100%);
}

.platform-icon-large.bilibili {
    background: linear-gradient(135deg, #00A1D6 0%, #5BC9E8 100%);
}

.platform-icon-large.douyin {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
}

[data-theme="dark"] .platform-icon-large.douyin {
    background: linear-gradient(135deg, #333333 0%, #666666 100%);
}

.platform-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.platform-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.platform-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-md);
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.platform-btn:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.platform-btn svg {
    width: 18px;
    height: 18px;
}

.platform-qr {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    opacity: 0;
    transform: translateY(20px);
    visibility: hidden;
    transition: all var(--transition-base);
}

/* ============================================
   联系预览
   ============================================ */
.contact-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 600px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.contact-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* 二维码缩略图 */
.qr-thumbnail {
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: visible;
}

.qr-placeholder {
    font-size: 0.625rem;
    color: var(--text-tertiary);
    text-align: center;
}

.qr-zoom {
    position: absolute;
    bottom: calc(100% + var(--space-md));
    right: 0;
    width: 200px;
    height: 200px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 100;
}

.qr-thumbnail:hover .qr-zoom {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.qr-large {
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   页面标题
   ============================================ */
.page-header {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

.page-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

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

/* ============================================
   飞书入口按钮
   ============================================ */
.feishu-entry {
    position: fixed;
    top: calc(var(--nav-height) + var(--space-lg));
    right: var(--space-xl);
    z-index: 100;
}

.feishu-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.feishu-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.feishu-icon {
    width: 20px;
    height: 20px;
}

.arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.feishu-btn:hover .arrow-icon {
    transform: translate(2px, -2px);
}

/* ============================================
   分类筛选
   ============================================ */
.filter-section {
    padding: 0 var(--space-xl) var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.filter-tabs {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.filter-tab {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* ============================================
   博客页提示
   ============================================ */
.blog-notice {
    padding: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

.notice-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.notice-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

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

/* ============================================
   联系我页面
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

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

.contact-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

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

.contact-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.contact-icon-large {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.contact-icon-large svg {
    width: 32px;
    height: 32px;
}

.contact-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.contact-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.contact-detail .contact-label {
    font-size: 0.875rem;
}

.contact-detail .contact-value {
    font-size: 1.25rem;
    font-weight: 600;
}

/* 二维码 */
.qr-code-container {
    text-align: center;
}

.qr-code {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-base);
    cursor: pointer;
}

.qr-code:hover {
    transform: scale(1.05);
}

.qr-placeholder.large {
    font-size: 1rem;
    color: var(--text-secondary);
}

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

/* 复制按钮 */
.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
}

.copy-btn:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.copy-btn svg {
    width: 20px;
    height: 20px;
}

/* 附加信息 */
.contact-extra {
    padding: var(--space-xl);
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.extra-card {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-light);
}

.extra-icon {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

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

/* Toast提示 */
.toast {
    position: fixed;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 2000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast-icon {
    width: 20px;
    height: 20px;
    color: #34C759;
}

.toast-message {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* ============================================
   底部版权区
   ============================================ */
.footer {
    padding: var(--space-2xl) var(--space-xl);
    border-top: 1px solid var(--divider);
    background: var(--bg-secondary);
}

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

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 var(--space-lg);
    }
    
    .nav-links {
        gap: var(--space-xs);
    }
    
    .nav-link {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.875rem;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
        --nav-height-scrolled: 56px;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-title {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .section {
        padding: var(--space-2xl) var(--space-lg);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .feishu-entry {
        position: relative;
        top: auto;
        right: auto;
        padding: 0 var(--space-xl) var(--space-xl);
        text-align: center;
    }
    
    .page-works .section:first-of-type {
        padding-top: var(--space-xl);
    }
}

/* ============================================
   页面切换动画
   ============================================ */
.page-transition {
    animation: pageFadeIn 0.4s ease;
}

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

/* 隐藏元素（用于筛选） */
.hidden {
    display: none !important;
}

/* 筛选动画 */
.work-card {
    animation: cardFadeIn 0.4s ease;
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}