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

:root {
    --primary: #2c5282;
    --primary-light: #4a7bb7;
    --primary-dark: #1a365d;
    --accent: #3182ce;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-primary: 0 10px 40px -10px rgba(44, 82, 130, 0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 12px;
    --radius-lg: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

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

/* ==================== 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);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--gray-100);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 8px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.5px;
}

.nav-menu ul {
    display: flex;
    gap: 8px;
}

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    color: var(--gray-600);
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==================== Hero 首屏 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(44, 82, 130, 0.08) 1px, transparent 0);
    background-size: 40px 40px;
    opacity: 0.6;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(49, 130, 206, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 100px;
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

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

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

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

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

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 36px;
    max-width: 560px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 10px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--white);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 50px -10px rgba(44, 82, 130, 0.5);
}

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

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

.btn-light {
    background: var(--white);
    color: var(--primary);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.2);
}

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

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-500);
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--gray-200);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 500px;
}

.visual-card {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    animation: float 6s ease-in-out infinite;
}

.visual-card .card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(44, 82, 130, 0.1) 0%, rgba(49, 130, 206, 0.1) 100%);
    color: var(--primary);
    border-radius: 14px;
}

.visual-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.visual-card p {
    font-size: 13px;
    color: var(--gray-500);
}

.card-1 {
    top: 20px;
    right: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 160px;
    left: 0;
    animation-delay: -2s;
}

.card-3 {
    bottom: 80px;
    right: 40px;
    animation-delay: -4s;
}

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

.floating-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    opacity: 0.1;
    animation: circleFloat 8s ease-in-out infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.circle-2 {
    width: 120px;
    height: 120px;
    top: 10%;
    left: 20%;
    animation-delay: -3s;
}

.circle-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    right: 10%;
    animation-delay: -5s;
}

@keyframes circleFloat {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--gray-400);
    font-size: 12px;
    animation: bounce 2s infinite;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--gray-300) 0%, transparent 100%);
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ==================== 通用 Section 样式 ==================== */
.section {
    padding: 100px 0;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(44, 82, 130, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 16px;
    color: var(--gray-500);
}

/* ==================== 关于我们 ==================== */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 20px;
}

.about-intro {
    font-size: 17px;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 16px;
}

.about-text p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 28px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(44, 82, 130, 0.1);
    color: var(--primary);
    border-radius: 10px;
    flex-shrink: 0;
}

.feature-item span {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
}

.about-stats {
    display: flex;
    justify-content: center;
}

.stats-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--radius-lg);
    padding: 40px;
    color: var(--white);
    box-shadow: var(--shadow-primary);
    width: 100%;
    max-width: 380px;
}

.stats-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.stats-item.large {
    padding: 0 0 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.stats-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.stats-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    flex-shrink: 0;
}

.stats-icon.small {
    width: 48px;
    height: 48px;
    border-radius: 12px;
}

.stats-number {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
}

.stats-number span {
    font-size: 18px;
    font-weight: 500;
    opacity: 0.8;
    margin-left: 4px;
}

.stats-number.small {
    font-size: 24px;
}

.stats-number.small span {
    font-size: 14px;
}

.stats-label {
    font-size: 14px;
    opacity: 0.85;
    margin-top: 4px;
}

.stats-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.stats-row .stats-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 0;
    border-bottom: none;
}

/* ==================== 核心服务 ==================== */
.services {
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

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

.service-number {
    position: absolute;
    top: 24px;
    right: 28px;
    font-size: 48px;
    font-weight: 700;
    color: var(--gray-100);
    line-height: 1;
    transition: var(--transition);
}

.service-card:hover .service-number {
    color: rgba(44, 82, 130, 0.1);
}

.service-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(44, 82, 130, 0.1) 0%, rgba(49, 130, 206, 0.1) 100%);
    color: var(--primary);
    border-radius: 18px;
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--white);
    transform: scale(1.05);
}

.service-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.service-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.service-list {
    margin-bottom: 24px;
}

.service-list li {
    position: relative;
    padding-left: 20px;
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

.service-arrow {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-50);
    color: var(--gray-400);
    border-radius: 10px;
    transition: var(--transition);
}

.service-card:hover .service-arrow {
    background: var(--primary);
    color: var(--white);
}

/* ==================== 特色产业载体 ==================== */
.projects {
    background: var(--white);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.project-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

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

.project-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.project-1 {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 50%, #3182ce 100%);
}

.project-2 {
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 50%, #718096 100%);
}

.project-building {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 40px;
}

.building-shape {
    width: 120px;
    height: 180px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 60px 60px 0 0;
    position: relative;
}

.building-shape.small {
    width: 80px;
    height: 140px;
    margin-left: -20px;
    border-radius: 40px 40px 0 0;
    background: rgba(255, 255, 255, 0.1);
}

.building-detail {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
}

.project-building.tower {
    padding-bottom: 20px;
}

.tower-shape {
    width: 100px;
    height: 220px;
    background: rgba(255, 255, 255, 0.15);
    position: relative;
    border-radius: 4px 4px 0 0;
}

.tower-shape::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px 4px 0 0;
}

.tower-windows {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: grid;
    grid-template-columns: repeat(3, 12px);
    grid-template-rows: repeat(8, 16px);
    gap: 8px;
}

.tower-windows::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(90deg, rgba(255,255,255,0.3) 8px, transparent 8px),
        linear-gradient(rgba(255,255,255,0.3) 12px, transparent 12px);
    background-size: 20px 24px;
    width: 60px;
    height: 180px;
    left: 50%;
    transform: translateX(-50%);
}

.project-tag {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    backdrop-filter: blur(10px);
}

.project-content {
    padding: 32px;
}

.project-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.project-location {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.project-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.project-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.feature-tag {
    padding: 6px 12px;
    background: var(--gray-50);
    color: var(--gray-600);
    font-size: 12px;
    border-radius: 6px;
    border: 1px solid var(--gray-200);
}

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

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

/* ==================== 为什么选择我们 ==================== */
.why-us {
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.why-us-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-item {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.why-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.why-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(44, 82, 130, 0.1) 0%, rgba(49, 130, 206, 0.1) 100%);
    color: var(--primary);
    border-radius: 20px;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.why-item:hover .why-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--white);
    transform: scale(1.1);
}

.why-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.why-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--gray-600);
}

/* ==================== 联系我们 ==================== */
.contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.contact-subtitle {
    font-size: 16px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 32px;
    letter-spacing: 1px;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--white);
    border-radius: 12px;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 4px;
    font-weight: 500;
}

.contact-text p {
    font-size: 16px;
    color: var(--gray-800);
    font-weight: 600;
}

.contact-text a:hover {
    color: var(--primary);
}

.contact-map {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-100);
}

.map-placeholder {
    position: relative;
    height: 100%;
    min-height: 450px;
    background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(44, 82, 130, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(44, 82, 130, 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
}

.map-pin {
    position: relative;
    z-index: 2;
    color: var(--primary);
    animation: pinBounce 2s ease-in-out infinite;
}

@keyframes pinBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.map-info {
    position: absolute;
    bottom: 32px;
    left: 32px;
    right: 32px;
    background: var(--white);
    padding: 20px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 2;
}

.map-info h4 {
    font-size: 16px;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.map-info p {
    font-size: 14px;
    color: var(--gray-500);
}

/* ==================== CTA 区块 ==================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.cta-text h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.cta-text p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
}

.cta-buttons {
    display: flex;
    gap: 16px;
    flex-shrink: 0;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 60px 0 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--gray-800);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.footer-logo span {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 360px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 20px;
    font-weight: 600;
}

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

.footer-column a {
    font-size: 14px;
    color: var(--gray-400);
}

.footer-column a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: var(--gray-500);
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--white);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 30px -5px rgba(44, 82, 130, 0.4);
}

/* ==================== 动画效果 ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 40px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-subtitle {
        max-width: 100%;
    }
    
    .hero-visual {
        height: 400px;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .why-us-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 20px;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu ul {
        flex-direction: column;
        gap: 4px;
    }
    
    .nav-link {
        display: block;
        padding: 12px 16px;
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .stat-divider {
        display: none;
    }
    
    .hero-visual {
        display: none;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .why-us-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-row {
        grid-template-columns: 1fr;
    }
    
    .cta-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-text h2 {
        font-size: 24px;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
    
    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .project-content {
        padding: 24px;
    }
}
/* 真实项目图片样式 */
.project-image-real {
    overflow: hidden;
    position: relative;
}

.project-image-real img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.project-image-real .project-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
}