/* 
 * 弗霍特建站 - 极简轻奢风格全站样式
 * 香氛清新风：薄荷绿 + 纯白 + 浅蓝
 * 上下对撞对称布局，锯齿线分割
 */

/* ==================== CSS Reset & Base ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - 香氛清新风 */
    --mint-primary: #98D7C2;
    --mint-dark: #7BC4B0;
    --mint-light: #B5EAD7;
    --white: #FFFFFF;
    --light-blue: #B8E6F5;
    --light-blue-dark: #A2D5F0;
    --light-blue-light: #D4F0FA;
    
    /* 文字颜色 */
    --text-dark: #2C3E50;
    --text-medium: #5D6D7E;
    --text-light: #7F8C8D;
    --text-muted: #BDC3C7;
    
    /* 强调色 */
    --accent: #5DBCD2;
    --accent-hover: #48A5C0;
    
    /* 背景色 */
    --bg-white: #FFFFFF;
    --bg-mint: #F5FFFC;
    --bg-blue: #F0F9FC;
    --bg-gradient-1: linear-gradient(135deg, #F5FFFC 0%, #F0F9FC 100%);
    --bg-gradient-2: linear-gradient(135deg, #F0F9FC 0%, #F5FFFC 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(44, 62, 80, 0.06);
    --shadow-md: 0 4px 16px rgba(44, 62, 80, 0.1);
    --shadow-lg: 0 8px 32px rgba(44, 62, 80, 0.12);
    --shadow-xl: 0 16px 48px rgba(44, 62, 80, 0.15);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--accent);
}

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

/* ==================== 工具类 ==================== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-narrow {
    max-width: 1200px;
}

.container-wide {
    max-width: 1600px;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-col { flex-direction: column; }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.hidden { display: none; }
.visible { visibility: visible; opacity: 1; }

/* ==================== 排版样式 ==================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-medium);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ==================== 导航栏 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all var(--transition-base);
    padding: var(--spacing-md) 0;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-sm) 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    z-index: 1001;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    background: linear-gradient(135deg, var(--mint-dark), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

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

.nav-link {
    position: relative;
    padding: var(--spacing-xs) 0;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--mint-primary), var(--accent));
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

.nav-cta {
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--mint-primary), var(--accent));
    color: var(--white);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-dark);
    transition: all var(--transition-fast);
}

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

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

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

/* 移动端导航 */
@media (max-width: 992px) {
    .hamburger {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--bg-white);
        flex-direction: column;
        padding: 100px var(--spacing-lg) var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
    }
    
    .nav.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    
    .nav-cta {
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-md);
    }
}

/* ==================== Hero Banner ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--bg-gradient-1);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-dark) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease forwards;
    opacity: 0;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-medium);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s forwards;
    opacity: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--mint-primary), var(--accent));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

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

.btn-secondary:hover {
    background: var(--mint-primary);
    color: var(--white);
    transform: translateY(-3px);
}

/* ==================== 锯齿线分割 ==================== */
.zigzag-divider {
    position: relative;
    height: 60px;
    overflow: hidden;
}

.zigzag-divider::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, var(--bg-mint) 50%, transparent 50%) 0 0,
        linear-gradient(225deg, var(--bg-mint) 50%, transparent 50%) 0 0;
    background-size: 40px 60px;
    background-repeat: repeat-x;
}

.zigzag-divider-up {
    transform: rotate(180deg);
}

.zigzag-divider-down {
    transform: rotate(0deg);
}

/* ==================== Section Styles ==================== */
.section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

.section-mint {
    background: var(--bg-mint);
}

.section-blue {
    background: var(--bg-blue);
}

.section-white {
    background: var(--bg-white);
}

.section-gradient {
    background: var(--bg-gradient-1);
}

/* ==================== 卡片样式 ==================== */
.card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.card-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card:hover .card-image img {
    transform: scale(1.1);
}

.card-content {
    padding: var(--spacing-lg);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.card-text {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==================== 服务卡片 ==================== */
.service-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--mint-light), var(--light-blue-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 40px;
    height: 40px;
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.service-text {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ==================== 特性网格 ==================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--mint-primary), var(--light-blue));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 30px;
    height: 30px;
}

.feature-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.feature-text {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ==================== 团队卡片 ==================== */
.team-card {
    text-align: center;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.team-image {
    width: 100%;
    height: 280px;
    overflow: hidden;
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.team-info {
    padding: var(--spacing-lg);
}

.team-name {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.team-role {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.team-desc {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ==================== 新闻列表 ==================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.news-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.news-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(135deg, var(--mint-primary), var(--accent));
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.news-content {
    padding: var(--spacing-lg);
}

.news-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-excerpt {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.news-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.news-more {
    color: var(--accent);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ==================== 案例展示 ==================== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.case-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.case-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.case-card:hover .case-image {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(44, 62, 80, 0.9), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-category {
    color: var(--mint-primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.case-title {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.case-desc {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* ==================== 联系表单 ==================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-info {
    padding: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--mint-light), var(--light-blue-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.contact-detail h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.contact-detail p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.contact-form {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-dark);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-mint);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--mint-primary);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--mint-primary), var(--accent));
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 992px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

/* ==================== 页脚 ==================== */
.footer {
    background: linear-gradient(135deg, #1a252f 0%, #2c3e50 100%);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    max-width: 350px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 40px;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-title {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--mint-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.footer-link:hover {
    color: var(--mint-primary);
    padding-left: var(--spacing-xs);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-social {
    display: flex;
    gap: var(--spacing-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;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--mint-primary);
    transform: translateY(-3px);
}

.social-link img {
    width: 20px;
    height: 20px;
}

@media (max-width: 992px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .footer-main {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ==================== 动画 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-fadeInDown {
    animation: fadeInDown 0.8s ease forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 0.8s ease forwards;
}

/* Scroll reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 响应式断点 ==================== */
@media (max-width: 1200px) {
    html {
        font-size: 15px;
    }
    
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    html {
        font-size: 14px;
    }
    
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    
    .card-content,
    .service-card {
        padding: var(--spacing-md);
    }
}

/* ==================== 内页头部 ==================== */
.page-header {
    position: relative;
    padding: 180px 0 80px;
    background: var(--bg-gradient-1);
    text-align: center;
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

.page-header-content {
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--text-dark) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 0.95rem;
    color: var(--text-light);
}

.page-breadcrumb a {
    color: var(--text-light);
    transition: color var(--transition-fast);
}

.page-breadcrumb a:hover {
    color: var(--accent);
}

.page-breadcrumb-separator {
    color: var(--text-muted);
}

/* ==================== 内页内容区 ==================== */
.page-content {
    padding: var(--spacing-xxl) 0;
}

.content-section {
    margin-bottom: var(--spacing-xxl);
}

/* ==================== 上下对撞布局 ==================== */
.collision-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 600px;
}

.collision-image {
    position: relative;
    overflow: hidden;
}

.collision-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.collision-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-xxl);
    background: var(--bg-mint);
}

.collision-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.collision-text {
    color: var(--text-medium);
    font-size: 1.1rem;
    line-height: 1.8;
}

@media (max-width: 992px) {
    .collision-layout {
        grid-template-columns: 1fr;
    }
    
    .collision-image {
        height: 400px;
    }
}

/* ==================== 对称卡片布局 ==================== */
.symmetric-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.symmetric-card {
    position: relative;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.symmetric-card:nth-child(odd) {
    transform: translateY(0);
}

.symmetric-card:nth-child(even) {
    transform: translateY(40px);
}

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

@media (max-width: 768px) {
    .symmetric-grid {
        grid-template-columns: 1fr;
    }
    
    .symmetric-card:nth-child(even) {
        transform: translateY(0);
    }
}

/* ==================== 资讯分类标签 ==================== */
.news-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: var(--spacing-xl) 0 var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--mint-primary);
    display: inline-block;
}