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

:root {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-dark: #0A0E1A;
    --bg-card: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-tertiary: #94A3B8;
    --text-light: #FFFFFF;
    --primary: #2563EB;
    --primary-light: #3B82F6;
    --primary-dark: #1D4ED8;
    --primary-glow: rgba(37, 99, 235, 0.15);
    --primary-subtle: rgba(37, 99, 235, 0.05);
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.2);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --max-width: 1500px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

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

ul, ol {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: 10px 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--border);
}

.navbar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

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

.logo img {
    height: 36px;
    width: auto;
    transition: transform var(--transition-fast);
}

.logo-text {
    font-size: 17px;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.navbar.scrolled .logo-text {
    color: var(--text-primary);
}

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

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    padding: 8px 12px;
    border-radius: 999px;
    position: relative;
    letter-spacing: 0.01em;
    transition: all var(--transition-fast);
}

.navbar.scrolled .nav-link {
    color: var(--text-secondary);
    font-size: 15px;
}

.nav-link:hover,
.nav-link.active {
    color: #FFFFFF;
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active,
.navbar.scrolled .nav-link:active {
    background: var(--primary-subtle);
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #FFFFFF;
    color: var(--primary);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-base);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.nav-cta:hover {
    background: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.navbar.scrolled .nav-cta {
    background: var(--primary);
    color: var(--text-light);
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
}

.navbar.scrolled .nav-cta:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: #FFFFFF;
    border-radius: 2px;
    transition: all var(--transition-base);
}

.navbar.scrolled .hamburger span {
    background: var(--text-primary);
}

.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(5px, -5px);
}

/* ========== Hero区域 ========== */
.hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #1d4ed8 100%);
    padding: 120px 0 80px;
}

.hero-bg-image {
    position: absolute;
    inset: 0;
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
    opacity: 0.2;
    mix-blend-mode: overlay;
    z-index: 0;
}

.hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(255, 255, 255, 0.1) 0%, transparent 70%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 60%),
        linear-gradient(180deg, rgba(30, 58, 138, 0.3) 0%, rgba(29, 78, 216, 0.5) 100%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: #FFFFFF;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--primary-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 28px;
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
    color: #FFFFFF;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.title-accent {
    color: #FFFFFF;
    background: none;
    -webkit-text-fill-color: initial;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 19px);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 48px;
    line-height: 1.7;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.trust-avatars {
    display: flex;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #60A5FA, #3B82F6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: white;
    margin-left: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.avatar:first-child {
    margin-left: 0;
}

.hero-trust strong {
    color: #FFFFFF;
    font-weight: 600;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 15px;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-light);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary-subtle);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--text-light);
    color: var(--bg-dark);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-ghost-white {
    background: transparent;
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

/* ========== 区块通用 ========== */
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-subtle);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.section-tag-light {
    background: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(32px, 4.5vw, 48px);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 18px;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.text-white {
    color: var(--text-light) !important;
}

.section-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
}

section {
    padding: 120px 0;
}

/* ========== 核心业务板块 ========== */
.services {
    background: var(--bg-secondary);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border), transparent);
}

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

.service-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 40px 32px 36px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-slow);
    border: 1px solid var(--border-light);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    opacity: 1;
}

.card-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 48px;
    font-weight: 800;
    color: var(--border-light);
    line-height: 1;
    transition: color var(--transition-base);
}

.service-card:hover .card-number {
    color: var(--primary-subtle);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-subtle);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--primary);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: var(--text-light);
    transform: scale(1.05);
}

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

.service-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.3;
}

.service-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    transition: gap var(--transition-base);
}

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

.card-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.card-link:hover svg {
    transform: translateX(2px);
}

/* ========== 数据信任背书 ========== */
.stats {
    background: var(--bg-dark);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.stats-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 70% 50% at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 70%),
        radial-gradient(ellipse 50% 60% at 80% 30%, rgba(59, 130, 246, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.stats-inner {
    position: relative;
    z-index: 1;
}

.stats-header {
    text-align: center;
    margin-bottom: 64px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition-base);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(37, 99, 235, 0.3);
    transform: translateY(-4px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 20px;
    color: var(--primary-light);
    opacity: 0.8;
}

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

.stat-number {
    font-size: clamp(40px, 5vw, 56px);
    font-weight: 800;
    color: var(--text-light);
    line-height: 1;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 400;
}

/* ========== 精选案例预览 ========== */
.cases-preview {
    background: var(--bg-primary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 56px;
}

.case-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.case-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

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

.case-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
}

.case-tag {
    display: inline-block;
    background: rgba(37, 99, 235, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
}

.case-content {
    padding: 24px;
}

.case-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.case-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    transition: gap var(--transition-base);
}

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

.section-cta {
    text-align: center;
}

/* ========== 新闻资讯预览 ========== */
.news-preview {
    background: var(--bg-secondary);
    position: relative;
}

.news-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border), transparent);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 56px;
}

.news-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.news-image {
    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(1.05);
}

.news-content {
    padding: 24px;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.news-category {
    display: inline-block;
    background: var(--primary-subtle);
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.news-date {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 400;
}

.news-content h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    transition: gap var(--transition-base);
}

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

/* ========== 底部CTA ========== */
.bottom-cta {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #1d4ed8 100%);
    text-align: center;
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.cta-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.06) 0%, transparent 40%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.bottom-cta .section-tag {
    margin-bottom: 24px;
}

.bottom-cta h2 {
    font-size: clamp(32px, 4.5vw, 48px);
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 18px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.bottom-cta p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
    line-height: 1.6;
}

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

/* ========== Footer ========== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.6);
    padding-top: 80px;
    position: relative;
}

.footer-wave {
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    transform: translateY(-99%);
}

.footer-wave svg {
    width: 100%;
    height: 80px;
    display: block;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 64px;
    padding-bottom: 56px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .footer-logo img {
    height: 36px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.footer-brand > p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.5);
}

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

.contact-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.contact-item:hover {
    color: var(--primary-light);
}

.contact-item svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.footer-links {
    display: flex;
    gap: 48px;
}

.link-group h4 {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.link-group a {
    display: block;
    font-size: 14px;
    margin-bottom: 14px;
    color: rgba(255, 255, 255, 0.5);
    transition: all var(--transition-fast);
}

.link-group a:hover {
    color: var(--text-light);
    transform: translateX(4px);
}

.footer-info h4 {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.info-item {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
}

.info-item svg {
    flex-shrink: 0;
    margin-top: 2px;
    opacity: 0.6;
}

.info-item p {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.5);
}

.footer-social {
    display: flex;
    gap: 24px;
}

.qr-code-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.qr-code-item img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px;
}

.qr-code-item p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

/* ========== 滚动动画 ========== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ========== 响应式 ========== */
@media (max-width: 1199px) {
    .container {
        padding: 0 28px;
    }
    
    .navbar-inner {
        padding: 0 28px;
        gap: 24px;
    }
    
    .nav-menu {
        gap: 20px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 48px;
    }
    
    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 767px) {
    .container {
        padding: 0 20px;
    }
    
    .navbar-inner {
        padding: 0 20px;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1000;
        background: linear-gradient(135deg, rgba(30, 58, 138, 0.98) 0%, rgba(37, 99, 235, 0.98) 100%);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 24px;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
    }

    .navbar.menu-open {
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        box-shadow: none;
    }
    
    .nav-link {
        font-size: 22px;
        color: var(--text-light);
        padding: 10px 28px;
        border-radius: 50px;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active .nav-link:hover,
    .nav-menu.active .nav-link.active,
    .nav-menu.active .nav-link:active {
        background: rgba(255, 255, 255, 0.2);
        color: #FFFFFF;
    }
    
    .nav-menu.active .nav-link::after {
        display: none;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger span {
        background: #FFFFFF;
    }
    
    .hero {
        min-height: 90vh;
        min-height: 90svh;
        padding: 100px 0 60px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-trust {
        flex-direction: column;
        gap: 12px;
    }
    
    .services-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .stat-item {
        padding: 24px 20px;
    }
    
    section {
        padding: 80px 0;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .footer-links {
        gap: 32px;
    }
    
    .bottom-cta {
        padding: 80px 0;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* ========== 内页Hero ========== */
.page-hero {
    min-height: 480px;
    min-height: 60svh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #1d4ed8 100%);
    padding: 160px 0 80px;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    mix-blend-mode: overlay;
    z-index: 0;
}

/* 各页面专属背景图 */
.about .page-hero-bg {
    background-image: url('../images/unsplash-teamwork-1.jpg');
}

.products .page-hero-bg {
    background-image: url('../images/unsplash-tech-1.jpg');
}

.news .page-hero-bg {
    background-image: url('../images/unsplash-hero-1.jpg');
}

.cases .page-hero-bg {
    background-image: url('../images/unsplash-collaboration-1.jpg');
}

.videos .page-hero-bg {
    background-image: url('../images/unsplash-innovation-1.jpg');
}

.message .page-hero-bg {
    background-image: url('../images/unsplash-growth-1.jpg');
}

.contact .page-hero-bg {
    background-image: url('../images/unsplash-search-1.jpg');
}

.page-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    padding: 0 24px;
}

.page-hero-content h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.page-hero-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* ========== 公司简介导航 ========== */
.about-nav {
    position: sticky;
    top: 72px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 0;
}

.about-nav .container {
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.about-nav .container::-webkit-scrollbar {
    display: none;
}

.about-nav-link {
    padding: 16px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.about-nav-link:hover,
.about-nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* ========== 公司简介区块 ========== */
.about-section {
    padding: 100px 0;
}

.about-section-alt {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

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

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

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

.about-stat-num {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

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

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* ========== 企业文化 ========== */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.culture-card {
    text-align: center;
    padding: 48px 32px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

.culture-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.culture-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    color: var(--primary);
}

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

.culture-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.culture-card p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== 时间线 ========== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--border));
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-dot {
    position: absolute;
    left: -33px;
    top: 4px;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}

.timeline-content {
    background: var(--bg-card);
    padding: 24px 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.timeline-year {
    display: inline-block;
    background: var(--primary-subtle);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* ========== 优势网格 ========== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.advantage-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.advantage-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--border-light);
    line-height: 1;
    margin-bottom: 16px;
}

.advantage-card:hover .advantage-num {
    color: var(--primary-subtle);
}

.advantage-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

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

/* ========== 产品页面 ========== */
.products-section {
    padding: 80px 0 100px;
}

.filter-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
    padding: 6px;
    background: var(--bg-secondary);
    border-radius: 100px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.filter-tab {
    padding: 10px 24px;
    border: none;
    border-radius: 100px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-tab:hover {
    color: var(--text-primary);
    background: rgba(37, 99, 235, 0.06);
}

.filter-tab.active {
    background: var(--primary);
    color: var(--text-light);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.products-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.product-card {
    display: flex;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

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

.product-image {
    position: relative;
    width: 320px;
    min-height: 220px;
    flex-shrink: 0;
    overflow: hidden;
}

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

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

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
}

.product-content {
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
}

.product-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.product-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.product-features {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.product-features span {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

/* ========== 新闻列表 ========== */
.news-list-section {
    padding: 80px 0 100px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.news-list-item {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 32px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

.news-list-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.news-list-image {
    height: 100%;
    min-height: 220px;
    overflow: hidden;
}

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

.news-list-item:hover .news-list-image img {
    transform: scale(1.05);
}

.news-list-content {
    padding: 28px 28px 28px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-list-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-list-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

/* ========== 案例列表 ========== */
.cases-list-section {
    padding: 80px 0 100px;
}

.cases-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-list-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

.case-list-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.case-list-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

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

.case-list-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(37, 99, 235, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
}

.case-list-content {
    padding: 24px;
}

.case-list-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.case-list-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.case-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}

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

.case-stat-value {
    display: block;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 4px;
}

.case-stat-label {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ========== 分页 ========== */
.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 48px;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.page-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-light);
}

/* ========== 视频页面 ========== */
.videos-section {
    padding: 80px 0 100px;
}

.video-featured {
    margin-bottom: 56px;
}

.video-featured-player {
    display: block;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: var(--shadow-lg);
}

.video-placeholder {
    position: relative;
    height: 500px;
    background: var(--bg-dark);
}

.video-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: transform var(--transition-base);
}

.video-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-featured-info {
    max-width: 700px;
}

.video-featured-info h2 {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    margin-bottom: 12px;
}

.video-featured-info p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

.video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.video-thumb {
    display: block;
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

.video-card:hover .video-thumb img {
    transform: scale(1.05);
}

.video-duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.video-card-content {
    padding: 20px;
}

.video-card-content h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

.video-card-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== 留言页面 ========== */
.message-section {
    padding: 80px 0 160px;
}

.message-grid {
    display: flex;
    justify-content: center;
}

.message-form-wrapper {
    width: 100%;
}

.message-form-wrapper h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.message-form-wrapper > p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.message-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-required {
    color: #EF4444;
}

.form-input {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%2364748B' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-block {
    width: 100%;
}

.form-success {
    text-align: center;
    padding: 48px 24px;
}

.form-success svg {
    margin-bottom: 20px;
}

.form-success h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.form-success p {
    font-size: 15px;
    color: var(--text-secondary);
}

.message-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    padding: 28px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.info-card-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-subtle);
    color: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.info-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.info-card p {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.info-card-note {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* ========== 联系我们页面 ========== */
.contact-section {
    padding: 80px 0 100px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
}

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

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-slow);
}

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

.contact-card-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-subtle);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

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

.contact-card-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.contact-address {
    font-size: 15px !important;
    font-weight: 500 !important;
    color: var(--text-primary) !important;
}

.contact-card-note {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* ========== 响应式补充 ========== */
@media (max-width: 1199px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantage-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .products-list {
        gap: 24px;
    }

    .product-card {
        flex-direction: column;
    }

    .product-image {
        width: 100%;
        height: 200px;
        min-height: auto;
    }
    
    .news-list-item {
        grid-template-columns: 260px 1fr;
    }
    
    .cases-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .videos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .message-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
}

@media (max-width: 767px) {
    .page-hero {
        min-height: 360px;
        padding: 120px 0 60px;
    }
    
    .about-nav {
        top: 64px;
    }
    
    .about-nav-link {
        padding: 12px 16px;
        font-size: 14px;
    }
    
    .about-section {
        padding: 64px 0;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .about-image img {
        height: 280px;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-dot {
        left: -28px;
    }
    
    .products-list {
        gap: 20px;
    }

    .product-content {
        padding: 20px;
    }

    .product-content h3 {
        font-size: 18px;
    }

    .cases-list {
        grid-template-columns: 1fr;
    }
    
    .news-list-item {
        grid-template-columns: 1fr;
    }
    
    .news-list-image {
        min-height: 200px;
    }
    
    .news-list-content {
        padding: 20px;
    }
    
    .videos-grid {
        grid-template-columns: 1fr;
    }
    
    .video-placeholder {
        height: 240px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}