/* ==================== 全局样式 ==================== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --light-bg: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #ffffff;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-3: linear-gradient(135deg, #06b6d4 0%, #2563eb 100%);
    --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: hidden;
    background: var(--light-bg);
}

.container {
    max-width: 1280px;
    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(20px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    height: 80px;
}

.nav-brand {
    display: flex;
    align-items: center;
}

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

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.logo-icon i {
    font-size: 1.5rem;
    color: white;
}

.logo:hover .logo-icon {
    transform: rotate(15deg) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-cn {
    font-size: 1.4rem;
    font-weight: 900;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.logo-en {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 10px;
    transition: var(--transition);
    position: relative;
    font-size: 0.95rem;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-2);
    border-radius: 10px;
    opacity: 0;
    transform: scale(0.8);
    transition: var(--transition);
    z-index: -1;
}

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

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
    transform: scale(1);
}

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

.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-2);
    color: white;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.nav-phone:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.nav-phone i {
    font-size: 0.9rem;
}

.nav-phone span {
    font-size: 0.95rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    padding: 8px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.05rem;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
}

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

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

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

.btn-light:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

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

.btn-block {
    width: 100%;
}

/* ==================== 英雄区 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0e7ff 50%, #ede9fe 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 800px;
    height: 800px;
    background: var(--primary-color);
    top: -300px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: var(--secondary-color);
    bottom: -200px;
    left: -200px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-color);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -70px) scale(1.1); }
    66% { transform: translate(-30px, 50px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 50px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 30px;
    animation: fadeInDown 0.8s ease-out;
}

.hero-badge i {
    font-size: 1.1rem;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 24px;
    line-height: 1.15;
}

.title-line {
    display: block;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

.title-line:nth-child(2) {
    animation-delay: 0.3s;
    animation-fill-mode: both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.35rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.hero-highlight {
    display: block;
    margin-top: 10px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 70px;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    animation: fadeInUp 1s ease-out 1.1s both;
}

.stat-item {
    text-align: center;
    padding: 20px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.stat-icon i {
    font-size: 1.3rem;
    color: white;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.stat-sub {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: bounce 2s infinite;
}

.mouse {
    width: 28px;
    height: 45px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    margin: 0 auto 10px;
    position: relative;
}

.wheel {
    width: 5px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-12px); }
    60% { transform: translateX(-50%) translateY(-6px); }
}

.scroll-indicator p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==================== 合作伙伴 ==================== */
.partners {
    padding: 60px 0;
    background: white;
    border-bottom: 1px solid #e2e8f0;
}

.partners-title {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.partners-title i {
    color: var(--primary-color);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    border-radius: 15px;
    transition: var(--transition);
    color: var(--text-secondary);
}

.partner-item:hover {
    background: var(--light-bg);
    color: var(--primary-color);
    transform: translateY(-3px);
}

.partner-item i {
    font-size: 2rem;
}

.partner-item span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==================== 通用区块样式 ==================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 25px;
    color: var(--text-primary);
}

.section-title.left {
    justify-content: flex-start;
}

.title-decoration {
    width: 70px;
    height: 5px;
    background: var(--gradient-2);
    border-radius: 3px;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 解决方案 ==================== */
.services {
    background: var(--light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: white;
    border-radius: 24px;
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
    border-color: transparent;
}

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

.service-card.featured {
    background: var(--gradient-2);
    color: white;
    border: none;
}

.service-card.featured .service-title,
.service-card.featured .service-desc,
.service-card.featured .service-features li {
    color: white;
}

.service-card.featured .service-number {
    color: rgba(255, 255, 255, 0.3);
}

.service-card.featured .service-link {
    color: white;
}

.service-card.featured .service-link i {
    color: white;
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gradient-gold);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.service-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(37, 99, 235, 0.08);
    line-height: 1;
}

.service-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-2);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 28px;
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.05) rotate(5deg);
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
}

.service-icon i {
    font-size: 2.5rem;
    color: white;
}

.service-title {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.service-desc {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
    font-size: 0.95rem;
}

.service-features {
    list-style: none;
    margin-bottom: 28px;
}

.service-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    color: var(--text-secondary);
    font-size: 0.93rem;
    border-bottom: 1px dashed #e2e8f0;
}

.service-features li:last-child {
    border-bottom: none;
}

.service-features i {
    color: var(--success-color);
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.service-card.featured .service-features li {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.service-card.featured .service-features i {
    color: white;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    transition: var(--transition);
    font-size: 0.95rem;
}

.service-link span {
    position: relative;
}

.service-link span::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    transition: var(--transition);
}

.service-link:hover {
    gap: 15px;
}

.service-link:hover span::after {
    width: 100%;
}

.service-card.featured .service-link {
    color: white;
}

/* ==================== 服务流程 ==================== */
.process {
    background: white;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 50px;
    right: 50px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    z-index: 0;
}

.process-item {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 20px;
}

.process-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    margin: 0 auto 15px;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.process-icon {
    width: 80px;
    height: 80px;
    background: var(--light-bg);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    transition: var(--transition);
}

.process-item:hover .process-icon {
    background: var(--gradient-2);
    transform: scale(1.1) rotate(5deg);
}

.process-icon i {
    font-size: 2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.process-item:hover .process-icon i {
    color: white;
}

.process-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.process-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== 成功案例 ==================== */
.projects {
    background: var(--light-bg);
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border: 2px solid #e2e8f0;
    background: white;
    color: var(--text-secondary);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 0.95rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-2);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 35px;
}

.project-card {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.project-image {
    position: relative;
    height: 280px;
    background: var(--gradient-2);
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.project-placeholder i {
    font-size: 5rem;
    margin-bottom: 15px;
    opacity: 0.6;
}

.project-placeholder span {
    font-size: 1.3rem;
    font-weight: 700;
    opacity: 0.8;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.project-actions {
    display: flex;
    gap: 15px;
    transform: translateY(20px);
    transition: var(--transition);
}

.project-card:hover .project-actions {
    transform: translateY(0);
}

.action-btn {
    width: 55px;
    height: 55px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition);
    text-decoration: none;
}

.action-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.15);
}

.project-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.project-badge.hot {
    background: var(--gradient-gold);
    color: white;
}

.project-info {
    padding: 30px;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

.project-type {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-size {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.project-title {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.3;
}

.project-desc {
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.7;
    font-size: 0.93rem;
}

.project-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.project-tags .tag {
    background: var(--light-bg);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project-tags .tag i {
    font-size: 0.5rem;
    color: var(--primary-color);
}

.projects-more {
    text-align: center;
    margin-top: 50px;
}

/* ==================== 客户评价 ==================== */
.testimonials {
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--light-bg);
    border-radius: 24px;
    padding: 35px;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
}

.testimonial-card:hover {
    background: white;
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.testimonial-card.featured {
    background: var(--gradient-2);
    color: white;
    border: none;
}

.testimonial-card.featured .testimonial-rating i {
    color: #fbbf24;
}

.testimonial-card.featured .testimonial-content p {
    color: white;
}

.testimonial-card.featured .author-info h4 {
    color: white;
}

.testimonial-card.featured .author-info p {
    color: rgba(255, 255, 255, 0.8);
}

.testimonial-rating {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
}

.testimonial-rating i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.testimonial-content {
    margin-bottom: 25px;
}

.testimonial-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 55px;
    height: 55px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    font-size: 1.5rem;
    color: white;
}

.author-info h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.author-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--gradient-2);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-2xl);
}

.image-placeholder i {
    font-size: 7rem;
    margin-bottom: 20px;
    opacity: 0.7;
}

.image-placeholder p {
    font-size: 1.6rem;
    font-weight: 700;
    opacity: 0.9;
}

.about-awards {
    position: absolute;
    bottom: -30px;
    right: -30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.award-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.award-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.about-content .section-tag {
    margin-bottom: 15px;
}

.about-content .section-title {
    justify-content: flex-start;
    margin-bottom: 25px;
    font-size: 2.5rem;
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.9;
    font-size: 1.05rem;
}

.about-text strong {
    color: var(--primary-color);
    font-weight: 700;
}

.about-features {
    margin: 35px 0;
}

.feature-item {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
    padding: 20px;
    border-radius: 16px;
    background: white;
    transition: var(--transition);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-content h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.about-cta {
    display: flex;
    gap: 15px;
    margin-top: 35px;
}

/* ==================== CTA 区块 ==================== */
.cta-section {
    background: var(--gradient-2);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 35px;
}

.cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* ==================== 联系我们 ==================== */
.contact {
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 70px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    border-radius: 16px;
    background: var(--light-bg);
    transition: var(--transition);
}

.contact-item:hover {
    background: white;
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.contact-icon {
    width: 65px;
    height: 65px;
    background: var(--gradient-2);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.6rem;
    color: white;
}

.contact-detail h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.contact-detail p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.98rem;
}

.contact-detail a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 55px;
    height: 55px;
    background: var(--light-bg);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.4rem;
    transition: var(--transition);
    text-decoration: none;
}

.social-link:hover {
    transform: translateY(-5px);
}

.social-link.wechat:hover {
    background: #07c160;
    color: white;
}

.social-link.weibo:hover {
    background: #e6162d;
    color: white;
}

.social-link.linkedin:hover {
    background: #0077b5;
    color: white;
}

.contact-form {
    background: var(--light-bg);
    padding: 45px;
    border-radius: 24px;
}

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

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group label i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 14px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: white;
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

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

.btn-sub {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    opacity: 0.8;
    margin-top: 3px;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--dark-bg);
    color: white;
}

.footer-top {
    padding: 70px 0 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
}

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

.footer-logo .logo-icon {
    width: 55px;
    height: 55px;
}

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

.footer-about p {
    color: #94a3b8;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-certifications {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cert-badge {
    padding: 6px 14px;
    background: rgba(37, 99, 235, 0.2);
    color: var(--primary-light);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.footer-links h4,
.footer-services h4,
.footer-contact h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: white;
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

.footer-links li,
.footer-services li {
    margin-bottom: 14px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    color: white;
    padding-left: 8px;
}

.footer-links i {
    font-size: 0.8rem;
}

.footer-services li {
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    color: #94a3b8;
}

.footer-contact-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 3px;
}

.footer-contact-item a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact-item a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding: 30px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    color: #94a3b8;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: white;
}

.divider {
    color: #475569;
    margin: 0 10px;
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 55px;
    height: 55px;
    background: var(--gradient-2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.back-to-top i {
    font-size: 1.2rem;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1280px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .process-timeline {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .nav-phone span {
        display: none;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 30px 24px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 12px;
    }
    
    .title-decoration {
        width: 50px;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .about-awards {
        position: static;
        flex-direction: row;
        margin-top: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 15px;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
    
    .btn-lg {
        padding: 14px 28px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}


/* ========== 微信二维码弹窗 ========== */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.wechat-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}
.wechat-modal-content {
    position: relative;
    background: #fff;
    border-radius: 16px;
    padding: 32px 40px;
    text-align: center;
    max-width: 360px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}
@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.wechat-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}
.wechat-modal-close:hover { color: #333; }
.wechat-modal-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}
.wechat-icon-large {
    font-size: 28px;
    color: #07C160;
}
.wechat-modal-header h3 {
    margin: 0;
    font-size: 18px;
    color: #333;
}
.wechat-qr-container {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
}
.wechat-qr-img {
    width: 240px;
    height: 240px;
    object-fit: contain;
    border-radius: 8px;
}
.wechat-modal-tip {
    margin: 0 0 4px 0;
    font-size: 14px;
    color: #666;
}
.wechat-modal-name {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #333;
}