/* ==========================================
   Vibe Coding - 现代化CSS样式
   ========================================== */

/* CSS变量 */
:root {
    /* 主色调 */
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    
    /* 中性色 */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    
    /* 尺寸 */
    --header-height: 72px;
    --container-max: 1200px;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 28px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置和基础样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

ul, ol {
    list-style: none;
}

/* 容器 */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================
   导航栏
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

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

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition-fast);
}

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

.nav-link.active {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
}

.nav-link.nav-highlight {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
}

.nav-link.nav-highlight:hover {
    opacity: 0.9;
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
    padding: 10px;
}

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

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 999;
    padding: 24px;
    transform: translateX(100%);
    transition: var(--transition-base);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-link {
    display: block;
    padding: 16px 20px;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.mobile-link:hover,
.mobile-link.highlight {
    background: var(--gradient-primary);
    color: white;
}

/* ==========================================
   英雄区域
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + 60px) 0 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(102, 126, 234, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(118, 75, 162, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(240, 147, 251, 0.08), transparent);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(102, 126, 234, 0.3) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.3) 1px, transparent 1px),
        radial-gradient(circle at 40% 80%, rgba(240, 147, 251, 0.3) 1px, transparent 1px);
    background-size: 60px 60px, 80px 80px, 100px 100px;
    animation: float 20s ease-in-out infinite;
}

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

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.2) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 32px;
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.title-line {
    display: block;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.title-gradient {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

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

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 4px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 30px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.125rem;
}

/* 英雄统计 */
.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* 滚动提示 */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.875rem;
    animation: bounce 2s ease-in-out infinite;
}

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

/* ==========================================
   通用Section样式
   ========================================== */
.section {
    padding: 100px 0;
}

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

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   关于Section
   ========================================== */
.section-about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.quote-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: 32px;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: 16px;
    left: 24px;
    font-size: 4rem;
    font-family: Georgia, serif;
    color: var(--primary-color);
    opacity: 0.2;
    line-height: 1;
}

.quote-card blockquote {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 24px;
    padding-left: 20px;
}

.quote-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 1rem;
    color: var(--text-primary);
}

.author-info span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.about-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* 代码演示 */
.code-demo {
    background: #1e293b;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: #0f172a;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-dots {
    display: flex;
    gap: 8px;
}

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dots span:nth-child(1) { background: #ef4444; }
.code-dots span:nth-child(2) { background: #eab308; }
.code-dots span:nth-child(3) { background: #22c55e; }

.code-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.code-body {
    padding: 24px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.8;
}

.code-line {
    color: rgba(255, 255, 255, 0.8);
}

.code-comment { color: #6b7280; }
.code-keyword { color: #c084fc; }
.code-func { color: #60a5fa; }
.code-string { color: #4ade80; }
.code-fade { color: #4b5563; }

.code-divider {
    text-align: center;
    padding: 16px 0;
    color: #6b7280;
}

.code-divider span {
    padding: 4px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.code-line.vibe {
    color: #4ade80;
}

.code-prompt { color: #f59e0b; }
.code-ai { color: #22c55e; }
.code-success { color: #4ade80; }

/* ==========================================
   特性Section
   ========================================== */
.section-features {
    background: var(--bg-primary);
}

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

.feature-card {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 20px;
}

.feature-icon-wrapper {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   工作流程Section
   ========================================== */
.section-workflow {
    background: var(--gradient-dark);
    color: white;
}

.section-workflow .section-badge {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
}

.section-workflow .section-title {
    color: white;
}

.section-workflow .section-description {
    color: rgba(255, 255, 255, 0.7);
}

.workflow-steps {
    max-width: 800px;
    margin: 0 auto;
}

.workflow-step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
}

.workflow-connector {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent);
    margin: 0 auto;
}

/* ==========================================
   工具Section
   ========================================== */
.section-tools {
    background: var(--bg-secondary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.tool-card {
    background: var(--bg-primary);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
    text-align: center;
}

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

.tool-logo {
    width: 72px;
    height: 72px;
    background: var(--bg-secondary);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-color);
}

.tool-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.tool-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.tool-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
}

/* 镜像服务CTA */
.mirror-cta {
    background: var(--gradient-primary);
    border-radius: var(--border-radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-xl), 0 20px 50px rgba(102, 126, 234, 0.3);
}

.mirror-cta-content {
    display: flex;
    align-items: center;
    gap: 32px;
}

.mirror-cta-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.mirror-cta-text {
    flex: 1;
}

.mirror-cta-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
}

.mirror-cta-text p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.mirror-cta .btn-primary {
    background: white;
    color: var(--primary-color);
    flex-shrink: 0;
}

.mirror-cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* ==========================================
   注意事项Section
   ========================================== */
.section-caution {
    background: var(--bg-primary);
}

.caution-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

.caution-card {
    padding: 32px;
    border-radius: var(--border-radius-lg);
}

.caution-card.good {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(34, 197, 94, 0.05) 100%);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.caution-card.warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.caution-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.caution-card.good .caution-header svg {
    color: #22c55e;
}

.caution-card.warning .caution-header svg {
    color: #f59e0b;
}

.caution-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.caution-card ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.caution-card li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.caution-card li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.caution-card.good li::before {
    background: #22c55e;
}

.caution-card.warning li::before {
    background: #f59e0b;
}

.caution-quote {
    text-align: center;
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--primary-color);
}

.caution-quote p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 12px;
}

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

/* ==========================================
   CTA Section
   ========================================== */
.section-cta {
    background: var(--bg-secondary);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: #0f172a;
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 280px;
}

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

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-brand p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================
   镜像页面特定样式
   ========================================== */
.privacy-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.privacy-card {
    background: var(--bg-primary);
    padding: 48px;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.privacy-content {
    max-width: 600px;
    margin: 0 auto;
}

.privacy-icon {
    width: 80px;
    height: 80px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--primary-color);
}

.privacy-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.privacy-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 统计区域 */
.stats-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.stats-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.stats-text h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-card {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: white;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

/* 镜像页面网格 */
.footer-grid {
    display: grid;
    grid-template-columns: 1fr repeat(3, auto);
    gap: 60px;
    margin-bottom: 60px;
}

.footer-links-group h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-links-group ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links-group a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-fast);
}

.footer-links-group a:hover {
    color: white;
}

/* GitHub样式 */
.nav-github {
    display: flex;
    align-items: center;
    gap: 6px;
}

.github-stars {
    font-size: 0.8rem;
    font-weight: 600;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-visual {
        order: -1;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .mirror-cta-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero {
        padding: calc(var(--header-height) + 40px) 0 80px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .hero-scroll {
        display: none;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .features-grid,
    .tools-grid,
    .caution-grid {
        grid-template-columns: 1fr;
    }
    
    .workflow-step {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 16px;
    }
    
    .step-icon {
        margin: 0 auto;
    }
    
    .step-number {
        font-size: 2rem;
    }
    
    .mirror-cta {
        padding: 32px;
    }
    
    .privacy-card {
        padding: 32px 24px;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .cta-actions {
        flex-direction: column;
    }
}

/* ==========================================
   镜像页面专属样式
   ========================================== */

/* 镜像页面英雄区 */
.mirror-hero {
    min-height: auto;
    padding: calc(var(--header-height) + 80px) 0 80px;
}

.mirror-hero .hero-title {
    margin-top: 16px;
}

/* 提示通知卡片 */
.mirror-notice {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    max-width: 700px;
    margin: 40px auto;
    padding: 24px 32px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--border-radius-lg);
    text-align: left;
}

.notice-icon {
    width: 48px;
    height: 48px;
    background: rgba(245, 158, 11, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f59e0b;
    flex-shrink: 0;
}

.notice-content h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #92400e;
    margin-bottom: 8px;
}

.notice-content p {
    font-size: 0.9375rem;
    color: #a16207;
    line-height: 1.7;
}

.notice-content strong {
    color: #78350f;
}

/* 服务分类 */
.section-services {
    background: var(--bg-primary);
}

.service-category {
    margin-bottom: 60px;
}

.service-category:last-of-type {
    margin-bottom: 0;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
}

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.category-icon.gemini {
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
}

.category-icon.claude {
    background: linear-gradient(135deg, #d97706 0%, #dc2626 100%);
}

.category-icon.chatgpt {
    background: linear-gradient(135deg, #10a37f 0%, #1a7f64 100%);
}

.category-icon.grok {
    background: linear-gradient(135deg, #1d9bf0 0%, #000000 100%);
}

.category-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.service-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 20px;
}

.service-content {
    flex: 1;
    margin-bottom: 20px;
}

.service-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.service-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.service-card .btn {
    width: 100%;
}

/* 服务保障 */
.section-guarantee {
    background: var(--bg-secondary);
}

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

.guarantee-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-base);
}

.guarantee-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.guarantee-icon {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto 20px;
}

.guarantee-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.guarantee-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 使用指南 */
.section-guide {
    background: var(--gradient-dark);
    color: white;
}

.section-guide .section-badge {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
}

.section-guide .section-title {
    color: white;
}

.guide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.guide-text {
    text-align: left;
}

.guide-steps {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.guide-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.step-marker {
    width: 44px;
    height: 44px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.step-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.step-info p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.guide-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.guide-stats .stat-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.guide-stats .stat-icon {
    background: rgba(255, 255, 255, 0.1);
}

.guide-stats .stat-value {
    color: white;
}

.guide-stats .stat-label {
    color: rgba(255, 255, 255, 0.6);
}

/* 免责声明 */
.section-disclaimer {
    background: var(--bg-secondary);
    padding: 80px 0;
}

.disclaimer-card {
    background: var(--bg-primary);
    padding: 48px;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
}

.disclaimer-icon {
    width: 80px;
    height: 80px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--primary-color);
}

.disclaimer-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.disclaimer-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

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

.disclaimer-card a {
    color: var(--primary-color);
    text-decoration: underline;
}

.disclaimer-card a:hover {
    color: var(--primary-dark);
}

/* 镜像页面响应式 */
@media (max-width: 1024px) {
    .guide-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .guide-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .mirror-hero {
        padding: calc(var(--header-height) + 40px) 0 60px;
    }
    
    .mirror-notice {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }
    
    .notice-icon {
        margin: 0 auto;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .guarantee-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-content {
        text-align: center;
    }
    
    .guide-text {
        text-align: center;
    }
    
    .guide-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .guide-stats {
        grid-template-columns: 1fr;
    }
    
    .disclaimer-card {
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .category-header {
        flex-direction: column;
        gap: 8px;
    }
}