/* 全新架构设计 - 医药数字化平台重新设计版本 */

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background-color: #ffffff;
    overflow-x: hidden;
}

/* 全新配色系统 - 基于现有LOGO的#E6231D */
:root {
    /* 主色系 - 基于LOGO红色 */
    --primary-red: #E6231D;
    --primary-red-light: #FF4444;
    --primary-red-dark: #B91C1C;
    --primary-red-alpha: rgba(230, 35, 29, 0.1);
    
    /* 深色系 - 专业感 */
    --dark-primary: #0F172A;
    --dark-secondary: #1E293B;
    --dark-tertiary: #334155;
    
    /* 浅色系 - 现代感 */
    --light-primary: #F8FAFC;
    --light-secondary: #F1F5F9;
    --light-tertiary: #E2E8F0;
    
    /* 文字色系 */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --text-white: #FFFFFF;
    
    /* 功能色系 */
    --success: #10B981;
    --warning: #F59E0B;
    --info: #3B82F6;
    
    /* 阴影系统 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* 圆角系统 */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    
    /* 间距系统 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;
    
    /* 动画系统 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全新容器系统 - 非对称布局 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* 全新导航系统 - 侧边固定式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--light-tertiary);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    height: 150px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* LOGO区域 - 保持原有设计 */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.logo-img {
    height: 100px;
    width: auto;
    transition: var(--transition-fast);
}

.logo-text {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

/* 导航菜单 - 水平布局 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-sm);
    margin: 0;
    padding: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--primary-red-alpha), transparent);
    transition: var(--transition-normal);
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-red);
    background: var(--primary-red-alpha);
}

.nav-actions {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

/* 全新按钮系统 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-red);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-red-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--primary-red);
    color: var(--text-white);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.btn-outline:hover {
    background: var(--text-white);
    color: var(--primary-red);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 16px;
    border-radius: var(--radius-lg);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.hamburger:hover {
    background: var(--primary-red-alpha);
}

.bar {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    margin: 2px 0;
    border-radius: 2px;
    transition: var(--transition-fast);
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* 主要内容区域 */
main {
    margin-top: 150px;
}

/* 全新Hero设计 - 分屏布局 */
.hero {
    min-height: calc(100vh - 150px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    padding: var(--space-4xl) var(--space-3xl);
    z-index: 10;
    position: relative;
}

.hero-visual {
    position: relative;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="2"/></g></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    position: absolute;
    top: 0;
    left: 0;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    color: var(--primary-red);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-red);
    border-radius: 2px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    font-weight: 400;
}

.hero-description {
    font-size: 16px;
    color: var(--text-tertiary);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--light-tertiary);
}

.hero-stat {
    text-align: left;
}

.hero-stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-red);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.hero-stat-label {
    font-size: 14px;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* 全新区块系统 - 非对称布局 */
.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-dark {
    background: var(--dark-primary);
    color: var(--text-white);
}

.section-light {
    background: var(--light-primary);
}

.section-accent {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: var(--text-white);
}

/* 区块头部 - 左对齐设计 */
.section-header {
    margin-bottom: var(--space-4xl);
    max-width: 800px;
}

.section-header.center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: var(--primary-red-alpha);
    color: var(--primary-red);
    border-radius: var(--radius-xl);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
    color: inherit;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 600px;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* 全新卡片系统 - 不规则布局 */
.cards-grid {
    display: grid;
    gap: var(--space-xl);
}

.cards-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.cards-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.cards-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.cards-grid-5 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
    background: var(--text-white);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--light-tertiary);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-red), var(--primary-red-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(230, 35, 29, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.card-icon::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(230, 35, 29, 0.1), transparent);
    transform: rotate(45deg);
    transition: var(--transition-slow);
}

.card:hover .card-icon::after {
    animation: shine 0.6s ease-in-out;
}

@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.card-icon img {
    width: 32px;
    height: 32px;
    /* 移除所有滤镜，让图标以原始状态显示 */
    display: block;
    object-fit: contain;
}

/* 当图标加载失败时显示备用图标 */
.card-icon img[src*="yiyaodaibiao"]::after,
.card-icon img[alt*="专业团队"]::after {
    content: '👥';
    font-size: 24px;
}

.card-icon img[src*="liuchengzhenggui"]::after,
.card-icon img[alt*="合规流程"]::after {
    content: '✓';
    font-size: 24px;
}

.card-icon img[src*="aizhineng"]::after,
.card-icon img[alt*="智能系统"]::after {
    content: '🤖';
    font-size: 24px;
}

/* 深色区域的卡片图标样式 */
.section-dark .card-icon {
    background: linear-gradient(135deg, var(--primary-red), var(--primary-red-light));
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.section-dark .card-icon img {
    /* 在深色背景中使用白色滤镜让图标更清晰 */
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.card-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.feature-tag {
    padding: var(--space-xs) var(--space-md);
    background: var(--light-secondary);
    color: var(--primary-red);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

/* 特色功能区块 - 交替布局 */
.feature-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    margin-bottom: var(--space-4xl);
}

.feature-showcase:nth-child(even) {
    direction: rtl;
}

.feature-showcase:nth-child(even) > * {
    direction: ltr;
}

.feature-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    line-height: 1.3;
}

.feature-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.feature-list {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background: var(--primary-red);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    flex-shrink: 0;
}

.feature-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.feature-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-slow);
}

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

/* CTA区块 - 全宽设计 */
.cta-section {
    background: var(--dark-primary);
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="2"/></g></svg>');
    animation: float 30s ease-in-out infinite reverse;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.cta-subtitle {
    font-size: 18px;
    margin-bottom: var(--space-2xl);
    opacity: 0.9;
    line-height: 1.6;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

/* 页脚 - 现代设计 */
.footer {
    background: var(--dark-primary);
    color: var(--text-white);
    padding: var(--space-4xl) 0 var(--space-xl);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--primary-red);
    border-radius: 2px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-section h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-white);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-fast);
    padding: var(--space-sm) 0;
}

.footer-links a:hover {
    color: var(--primary-red);
    padding-left: var(--space-sm);
}

.footer-contact {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-contact li {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.footer-contact li::before {
    content: '●';
    color: var(--primary-red);
    font-size: 12px;
    margin-top: 6px;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid var(--dark-secondary);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 16px;
}

.social-link:hover {
    background: var(--primary-red);
    color: var(--text-white);
    transform: translateY(-2px);
}

/* 模态框 - 现代设计 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    background: var(--text-white);
    margin: 5% auto;
    padding: var(--space-2xl);
    border-radius: var(--radius-2xl);
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.close {
    position: absolute;
    right: var(--space-lg);
    top: var(--space-lg);
    font-size: 24px;
    font-weight: 300;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover {
    color: var(--primary-red);
    background: var(--primary-red-alpha);
}

.modal-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

.demo-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

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

.form-group input,
.form-group textarea {
    padding: var(--space-md);
    border: 2px solid var(--light-tertiary);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition-fast);
    background: var(--text-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px var(--primary-red-alpha);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
    }
    
    .hero-visual {
        order: -1;
        height: 400px;
    }
    
    .feature-showcase {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .feature-showcase:nth-child(even) {
        direction: ltr;
    }
    
    .cards-grid-2,
    .cards-grid-3,
    .cards-grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 1024px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 150px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--light-tertiary);
        flex-direction: column;
        gap: 0;
        padding: var(--space-lg) 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: var(--space-lg) var(--space-xl);
        border-radius: 0;
        border-bottom: 1px solid var(--light-tertiary);
    }
    
    .nav-logo {
        justify-content: center !important;
    }
    
    .hero-title {
        font-size: 28px !important;
        line-height: 1.2 !important;
        display: block !important;
        visibility: visible !important;
    }
    
    .hero-subtitle {
        display: block !important;
        visibility: visible !important;
        font-size: 16px !important;
    }
    
    .hero-description {
        display: block !important;
        visibility: visible !important;
        font-size: 14px !important;
    }
    
    .hero-actions {
        display: flex !important;
        visibility: visible !important;
    }
    
    .hero-stats {
        display: flex !important;
        visibility: visible !important;
    }
    
    .mobile-hidden {
        display: none !important;
    }
    

    
    .logo-img {
        height: 70px;
    }
    
    .hero-content {
        padding: var(--space-2xl) var(--space-lg);
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: var(--space-xl);
    }
    
    .hero-stat {
        text-align: center;
    }
    
    .section {
        padding: var(--space-3xl) 0;
    }
    
    .cards-grid-2,
    .cards-grid-3,
    .cards-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container,
    .container-narrow,
    .container-wide {
        padding: 0 var(--space-md);
    }
    
    .nav-container {
        padding: 0 var(--space-lg);
    }
    
    .hero-content {
        padding: var(--space-xl) var(--space-md);
    }
    
    .card {
        padding: var(--space-xl);
    }
    
    .modal-content {
        margin: 10% auto;
        padding: var(--space-xl);
    }
}

/* 工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: 50%; }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.bg-white { background-color: var(--text-white); }
.bg-light { background-color: var(--light-primary); }
.bg-dark { background-color: var(--dark-primary); }
.bg-primary { background-color: var(--primary-red); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-white { color: var(--text-white); }
.text-red { color: var(--primary-red); }

/* 响应式设计 - 超小屏幕优化 */
@media (max-width: 480px) {
    .logo-img {
        height: 60px;
    }
    
    .header {
        padding: 0 var(--space-md);
    }
}