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

:root {
    --primary: #1E90FF;
    --primary-dark: #1874CD;
    --accent: #FF6600;
    --purple-light: #E8E0F0;
    --purple: #9B7ED9;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --bg-primary: #F9F9F9;
    --bg-secondary: #FFFFFF;
    --bg-dark: #1a202c;
    --border: #E0E0E0;
    --success: #28A745;
    --error: #DC3545;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 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);
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(255, 102, 0, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(255, 102, 0, 0.5);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(30, 144, 255, 0.05);
}

.btn-login {
    background: transparent;
    color: var(--text-secondary);
    padding: 10px 16px;
}

.btn-login:hover {
    color: var(--primary);
}

.btn-large {
    padding: 14px 28px;
    font-size: 16px;
    border-radius: var(--radius-lg);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: var(--transition);
}

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

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: linear-gradient(135deg, rgba(30, 144, 255, 0.1), rgba(155, 126, 217, 0.1));
    box-shadow: 0 2px 8px rgba(30, 144, 255, 0.15);
}

.dropdown-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 8px;
    min-width: 200px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--bg-secondary);
    color: var(--primary);
}

/* 导航操作按钮 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-mobile {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    padding: 6px 12px;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

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

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

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

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    bottom: -100px;
    left: -100px;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.3;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(155, 126, 217, 0.15);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--purple);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    display: block;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-visual {
    margin-bottom: 60px;
}

.hero-image {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.3s;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
}

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

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* 工具模块区域 */
.tools-section {
    padding: 120px 24px;
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.tools-section::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.1;
    pointer-events: none;
}

.tools-section::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.08;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.tool-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(30, 144, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(30, 144, 255, 0.05), transparent);
    transition: left 0.6s ease;
}

.tool-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.tool-card:hover::before {
    left: 100%;
}

.tool-card.featured {
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    color: white;
    border: 2px solid transparent;
    position: relative;
}

.tool-card.featured::before {
    content: '热门';
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--accent);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
}

.tool-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}

.tool-icon svg {
    width: 100%;
    height: 100%;
}

.tool-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.tool-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.tool-card.featured .tool-desc {
    color: rgba(255, 255, 255, 0.8);
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
}

.tool-card.featured .tool-link {
    color: white;
}

.tool-card.featured .tool-link:hover {
    color: var(--primary);
    background: white;
    padding: 8px 16px;
    border-radius: var(--radius);
}

.tool-link svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.tool-link:hover {
    gap: 10px;
}

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

.tool-card-more {
    background: rgba(30, 144, 255, 0.05);
    border: 2px dashed var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.tool-card-more:hover {
    border-color: var(--primary);
}

/* 快速体验区 */
.demo-section {
    padding: 120px 24px;
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.demo-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--purple) 0%, var(--primary) 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.1;
    pointer-events: none;
}

.demo-section::after {
    content: '';
    position: absolute;
    bottom: -200px;
    left: -100px;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.08;
    pointer-events: none;
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.demo-form {
    background: rgba(255, 255, 255, 0.95);
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid rgba(30, 144, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.demo-form:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.demo-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(30, 144, 255, 0.05), transparent);
    transition: left 0.6s ease;
}

.demo-form:hover::before {
    left: 100%;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-primary);
    background: white;
    transition: var(--transition);
}

.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-primary);
    background: white;
    resize: vertical;
    min-height: 120px;
    transition: var(--transition);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.1);
}

.demo-result {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.result-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.result-content {
    min-height: 200px;
    padding: 20px;
    background: var(--bg-primary);
    border-radius: var(--radius);
    margin-bottom: 20px;
    position: relative;
}

.result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 160px;
    color: var(--text-muted);
    text-align: center;
}

.result-placeholder svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.payment-tip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(255, 102, 0, 0.1);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--accent);
}

.payment-tip a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: underline;
}

/* 引流与社交推荐区 */
.social-section {
    padding: 120px 24px;
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.social-section::before {
    content: '';
    position: absolute;
    top: -200px;
    left: -100px;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.1;
    pointer-events: none;
}

.social-section::after {
    content: '';
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.08;
    pointer-events: none;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 80px;
}

.social-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(30, 144, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.social-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(30, 144, 255, 0.05), transparent);
    transition: left 0.6s ease;
}

.social-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.social-card:hover::before {
    left: 100%;
}

.social-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.social-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.social-card:hover .social-image img {
    transform: scale(1.05);
}

.social-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 20px 20px 8px;
}

.social-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0 20px 20px;
    line-height: 1.5;
}

/* 用户评价 */
.testimonials {
    margin-top: 60px;
}

.testimonials-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
}

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

.testimonial-card {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.testimonial-avatar {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
}

.testimonial-avatar svg {
    width: 100%;
    height: 100%;
}

.testimonial-content {
    flex: 1;
}

.testimonial-rating {
    color: #FFD700;
    font-size: 14px;
    margin-bottom: 12px;
}

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

.testimonial-author {
    font-size: 13px;
}

.testimonial-author strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.testimonial-author span {
    color: var(--text-muted);
}

/* 企业服务模块 */
.enterprise-section {
    padding: 120px 24px;
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.enterprise-section::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--purple) 0%, var(--primary) 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.1;
    pointer-events: none;
}

.enterprise-section::after {
    content: '';
    position: absolute;
    bottom: -200px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.08;
    pointer-events: none;
}

.enterprise-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.enterprise-feature {
    background: rgba(255, 255, 255, 0.95);
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid rgba(30, 144, 255, 0.1);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.enterprise-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(30, 144, 255, 0.05), transparent);
    transition: left 0.6s ease;
}

.enterprise-feature:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.enterprise-feature:hover::before {
    left: 100%;
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.enterprise-feature h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

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

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


/* CTA 区域 */
.cta-section {
    padding: 100px 24px;
    background: var(--primary);
}

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

.cta-title {
    font-size: 42px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

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

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 80px 24px 40px;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-text {
    color: var(--accent);
    background: linear-gradient(135deg, var(--accent) 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 15px;
    line-height: 1.7;
    max-width: 300px;
}

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

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-copyright {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .social-grid,
    .testimonials-grid,
    .enterprise-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .social-grid,
    .testimonials-grid,
    .enterprise-features {
        grid-template-columns: 1fr;
    }
    
    .enterprise-cta {
        flex-direction: column;
    }
    
    .section-title,
    .cta-title {
        font-size: 32px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}