/* ===== 全局重置与基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0A2463;
    --primary-light: #1a3a7a;
    --primary-dark: #061840;
    --accent: #FF6B35;
    --accent-light: #ff8a5c;
    --text-dark: #1a1a2e;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --success: #28a745;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background: var(--bg-white);
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
}

.btn-accent:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

.btn-outline-white {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.5);
}

.btn-outline-white:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.nav-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
}

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

.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-medium);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-medium);
}

.nav-phone strong {
    color: var(--primary);
    font-size: 16px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero区域 ===== */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,107,53,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-content h1 span {
    color: var(--accent);
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.hero-tag {
    padding: 6px 16px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    color: #fff;
    font-size: 13px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.hero-card {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-lg);
    padding: 28px;
    color: #fff;
}

.hero-card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-card-title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--accent);
    border-radius: 2px;
}

.hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.hero-stat {
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.hero-stat-number {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 4px;
}

.hero-stat-label {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
}

.hero-features {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.85);
}

.hero-feature-icon {
    width: 20px;
    height: 20px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: #fff;
    flex-shrink: 0;
}

/* ===== 通用Section样式 ===== */
.section {
    padding: 80px 0;
}

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

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 56px;
}

.section-label {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(10,36,99,0.08);
    color: var(--primary);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ===== 服务卡片 ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

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

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(10,36,99,0.1), rgba(255,107,53,0.1));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 20px;
}

.service-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.service-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-medium);
}

.service-feature-item::before {
    content: '✓';
    color: var(--success);
    font-weight: 700;
    font-size: 12px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.service-link:hover {
    color: var(--accent);
    gap: 10px;
}

/* ===== 优势区域 ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-item {
    text-align: center;
    padding: 32px 20px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.advantage-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
}

.advantage-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.advantage-desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 数据统计 ===== */
.stats-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    color: #fff;
}

.stat-number {
    font-size: 42px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-number sup {
    font-size: 20px;
}

.stat-label {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
}

/* ===== 案例展示 ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.case-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.case-banner {
    height: 180px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.case-banner::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.case-banner-icon {
    font-size: 56px;
    color: rgba(255,255,255,0.9);
    position: relative;
    z-index: 1;
}

.case-banner-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background: var(--accent);
    color: #fff;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.case-content {
    padding: 24px;
}

.case-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.case-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.case-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.case-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-medium);
}

.case-meta-item strong {
    color: var(--primary);
}

/* ===== 流程步骤 ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
}

.process-item {
    text-align: center;
    position: relative;
}

.process-number {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--bg-white);
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

.process-item:hover .process-number {
    background: var(--primary);
    color: #fff;
}

.process-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.process-desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== CTA区域 ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 70px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,107,53,0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

/* ===== 页脚 ===== */
.footer {
    background: var(--text-dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    font-weight: 800;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

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

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

.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact-item {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
    line-height: 1.7;
}

.footer-contact-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--accent);
    font-size: 16px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* ===== 页面Banner（内页用） ===== */
.page-banner {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,107,53,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.page-banner h1 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.page-banner p {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    position: relative;
    z-index: 1;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
}

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

/* ===== 服务详情页 ===== */
.service-detail {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: start;
}

.service-detail-content h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 32px 0 16px;
    padding-left: 14px;
    border-left: 4px solid var(--accent);
}

.service-detail-content h2:first-child {
    margin-top: 0;
}

.service-detail-content p {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.9;
    margin-bottom: 16px;
}

.service-detail-content ul {
    margin-bottom: 16px;
}

.service-detail-content li {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 2;
    padding-left: 24px;
    position: relative;
}

.service-detail-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.service-sidebar {
    position: sticky;
    top: 90px;
}

.sidebar-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.sidebar-card h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
}

.sidebar-price {
    text-align: center;
    padding: 10px 0;
}

.sidebar-price-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--accent);
}

.sidebar-price-number small {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 400;
}

.sidebar-price-desc {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 6px;
}

.sidebar-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.sidebar-contact-item:last-child {
    border-bottom: none;
}

.sidebar-contact-icon {
    width: 36px;
    height: 36px;
    background: rgba(10,36,99,0.08);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary);
    flex-shrink: 0;
}

.sidebar-contact-item strong {
    display: block;
    color: var(--text-dark);
    font-size: 13px;
    margin-bottom: 2px;
}

.sidebar-contact-item span {
    color: var(--text-medium);
    font-size: 14px;
}

/* ===== 关于我们页 ===== */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 60px;
}

.about-text h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.about-text p {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-visual {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.about-visual::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
}

.about-visual-text {
    text-align: center;
    color: #fff;
    position: relative;
    z-index: 1;
}

.about-visual-text .big-number {
    font-size: 64px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.about-visual-text .big-label {
    font-size: 18px;
    margin-top: 8px;
    opacity: 0.9;
}

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

.value-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

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

.value-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.value-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.value-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 联系我们页 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
}

.contact-info-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.contact-info-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.contact-info-item:last-child {
    border-bottom: none;
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(10,36,99,0.1), rgba(255,107,53,0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.contact-info-content strong {
    display: block;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 4px;
    font-weight: 500;
}

.contact-info-content span {
    font-size: 16px;
    color: var(--text-dark);
    font-weight: 600;
}

.contact-form-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.contact-form-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group label span {
    color: var(--accent);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-dark);
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10,36,99,0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-visual {
        order: -1;
    }
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .process-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .service-detail {
        grid-template-columns: 1fr;
    }
    .service-sidebar {
        position: static;
    }
    .about-hero {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu, .nav-phone {
        display: none;
    }
    .mobile-toggle {
        display: flex;
    }
    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px 24px;
        box-shadow: var(--shadow-md);
        gap: 16px;
    }
    .nav-menu a.active::after {
        display: none;
    }
    .hero {
        padding: 100px 0 60px;
    }
    .hero-content h1 {
        font-size: 28px;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .section {
        padding: 50px 0;
    }
    .section-title {
        font-size: 24px;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    .cases-grid {
        grid-template-columns: 1fr;
    }
    .process-grid {
        grid-template-columns: 1fr 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .stat-number {
        font-size: 32px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .cta-title {
        font-size: 24px;
    }
    .page-banner h1 {
        font-size: 26px;
    }
    .values-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }