/* 全局样式 - 专业科技配色 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Apple 风格配色系统 - 高端简洁 */
    --primary-color: #0071e3; /* 苹果蓝 - 经典强调色 */
    --primary-dark: #005bb5; /* 深苹果蓝 */
    --primary-light: #e8f4fd; /* 浅苹果蓝 - 背景点缀 */
    --secondary-color: #0055d4; /* 中苹果蓝 */
    --accent-color: #0071e3; /* 苹果蓝 - 强调色 */
    --text-dark: #1d1d1f; /* 深灰黑 - Apple 标准文字色 */
    --text-light: #86868b; /* 中灰 - Apple 次要文字色 */
    --bg-light: #ffffff; /* 纯白背景 */
    --bg-white: #ffffff; /* 纯白 */
    --bg-dark: #f5f5f7; /* Apple 浅灰背景 */
    --bg-gradient: linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%); /* Apple 渐变 */
    --border-color: #d2d2d7; /* Apple 边框色 */
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 20px rgba(0, 113, 227, 0.1); /* 苹果蓝色光效 */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

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

.logo-image {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

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

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

/* 按钮 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero 区域 */
.hero {
    background: #ffffff;
    color: var(--text-dark);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.15); opacity: 0.8; }
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, rgba(2, 132, 199, 0.1), transparent);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: 4rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-tag {
    display: inline-block;
    background: var(--primary-light);
    padding: 0.4rem 0.8rem;
    border-radius: 12px;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 500;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    line-height: 1.6;
    color: var(--text-light);
    font-weight: 400;
}

.hero-image {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-device-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    max-width: 400px;
    z-index: 2;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

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

.hero-pod-image {
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 1;
    opacity: 0.9;
}

.hero-pod-main {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-buttons .btn-outline {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.hero-buttons .btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 产品展示 */
.product-showcase {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.product-images {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.product-main-image {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-main-image:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.2);
}

.product-thumbs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.product-thumb {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
}

.product-thumb:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    border-color: var(--primary-color);
}

.product-details {
    padding: 1rem;
}

.product-name {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.product-desc {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.75rem 0;
    color: var(--text-dark);
    font-size: 1.05rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

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

/* 核心数据 */
.stats {
    background-color: var(--bg-dark);
    padding: 5rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}

/* 产品特点 */
.features {
    background-color: var(--bg-light);
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 18px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.25rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-desc {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 核心原理版块 */
.core-principles {
    background: #ffffff;
    color: var(--text-dark);
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.core-principles::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.02) 0%, transparent 100%);
    pointer-events: none;
}

.core-principles .section-title {
    color: var(--text-dark);
}

.core-principles .section-subtitle {
    color: var(--text-light);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.principle-card {
    background: #ffffff;
    padding: 2.5rem;
    border-radius: 12px;
    border: 2px solid var(--primary-light);
    box-shadow: var(--shadow-md);
}

.principle-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.principle-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.principle-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-light);
}

.principle-highlight {
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9em;
}

/* 安全说明版块 */
.safety-section {
    padding: 6rem 0;
    background-color: var(--bg-light);
}

.safety-header {
    text-align: center;
    margin-bottom: 4rem;
}

.safety-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.safety-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.safety-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.safety-icon {
    font-size: 2.5rem;
    margin-bottom: 1.25rem;
}

.safety-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.safety-desc {
    color: var(--text-light);
    line-height: 1.7;
}

.safety-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-size: 0.8rem;
    margin-top: 1rem;
    font-weight: 500;
}

/* 检测报告展示 */
.report-gallery {
    margin-top: 4rem;
    padding: 0 20px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.report-title {
    font-size: 1.75rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.report-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.report-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.report-item {
    background: var(--bg-white);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

.report-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.report-image {
    width: 100%;
    height: 320px;
    overflow: hidden;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.report-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

.report-item:hover .report-image img {
    transform: scale(1.03);
}

.report-info {
    padding: 2rem;
}

.report-name {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.report-no {
    color: var(--primary-color);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

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

.report-summary {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 18px;
    border: 1px solid var(--border-color);
}

.summary-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.summary-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.item-label {
    color: var(--text-dark);
    font-weight: 500;
}

.item-status {
    font-weight: 600;
    color: #34c759;
}

.item-status.status-pass {
    color: #34c759;
}

.summary-note {
    color: var(--text-light);
    font-size: 0.9rem;
    text-align: center;
    margin-top: 1rem;
}

/* 案例预览 */
.case-preview {
    background-color: var(--bg-white);
    padding: 6rem 0;
}

.case-preview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.case-preview-text .section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.case-subtitle {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.case-desc {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.case-preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.case-stat {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-light);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.case-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.case-stat-label {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
}

/* 合作城市 */
.cities {
    background-color: var(--bg-dark);
    padding: 5rem 0;
}

.cities-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.city-tag {
    background-color: var(--bg-white);
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    font-weight: 500;
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    font-size: 0.9rem;
}

.city-tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* CTA */
.cta {
    background: var(--bg-dark);
    color: var(--text-dark);
    padding: 5rem 0;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.cta-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: var(--text-light);
}

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

.cta-content .btn-primary:hover {
    background-color: var(--primary-dark);
}

/* 页脚 */
.footer {
    background-color: var(--bg-light);
    color: var(--text-dark);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.footer-desc {
    color: var(--text-light);
    line-height: 1.7;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-dark) 100%);
    color: var(--text-dark);
    padding: 4rem 0;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.page-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    color: var(--text-light);
}

/* 产品页样式 */
.product-section {
    padding: 5rem 0;
}

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

/* 技术块 */
.tech-content {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.tech-block {
    background-color: var(--bg-white);
    padding: 2.5rem;
    margin-bottom: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.tech-block.highlight {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
}

.tech-block.highlight .tech-block-title {
    color: white;
}

.tech-block.highlight .tech-block-desc {
    color: rgba(255, 255, 255, 0.9);
}

.tech-block-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.tech-block-desc {
    color: var(--text-light);
    line-height: 1.7;
}

/* 流程步骤 */
.process-flow {
    max-width: 900px;
    margin: 0 auto;
}

.flow-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: var(--text-dark);
}

.flow-steps {
    display: grid;
    gap: 2rem;
}

.flow-step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 42px;
    height: 42px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.step-desc {
    color: var(--text-light);
    line-height: 1.7;
}

/* 安全性事实 */
.safety-facts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.safety-fact {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.fact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.fact-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.fact-desc {
    color: var(--text-light);
    line-height: 1.7;
}

/* 适用人群 */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.audience-card {
    text-align: center;
    padding: 2.5rem;
    background-color: var(--bg-light);
    border-radius: 16px;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

.audience-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.audience-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.audience-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.audience-desc {
    color: var(--text-light);
    line-height: 1.7;
}

/* 对比表格 */
.comparison-table {
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.comparison-table thead {
    background-color: var(--primary-color);
    color: white;
}

.comparison-table th,
.comparison-table td {
    padding: 1.25rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    font-weight: 600;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr:hover {
    background-color: var(--bg-light);
}

/* 案例页样式 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2.5rem;
}

.case-card {
    background-color: var(--bg-white);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.case-image {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 2.5rem 2rem;
    color: white;
    text-align: center;
}

.case-school-name {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.case-location {
    opacity: 0.95;
    font-size: 0.9rem;
}

.case-content {
    padding: 2.5rem;
}

.case-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.case-result {
    margin-bottom: 1.5rem;
}

.result-label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.result-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
}

.case-desc {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* 案例高亮样式 */
.case-highlight {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 3.5rem;
    border-radius: 24px;
    color: white;
}

.highlight-stats {
    display: grid;
    gap: 2rem;
}

.highlight-stat {
    text-align: center;
    padding: 2.5rem;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 16px;
}

.highlight-number {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.highlight-label {
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 500;
}

.highlight-content {
    padding: 1rem 0;
}

.highlight-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.highlight-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    opacity: 0.95;
}

/* 用户反馈 */
.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 18px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.testimonial-text {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    font-weight: 600;
    color: var(--text-dark);
}

.testimonial-role {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* 联系页样式 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
}

.contact-info {
    background-color: var(--bg-light);
    padding: 2.5rem;
    border-radius: 18px;
    border: 1px solid var(--border-color);
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.contact-value {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 500;
}

.contact-form {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 18px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

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

/* FAQ */
.faq-section {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-white);
    border-radius: 16px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.faq-question {
    padding: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    position: relative;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-light);
    line-height: 1.7;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question::after {
    content: '-';
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 0.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-menu a {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-content {
        text-align: center;
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-device-image {
        position: relative;
        top: auto;
        left: auto;
        transform: none;
        width: 50%;
        margin: 0 auto;
    }

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

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .product-showcase {
        grid-template-columns: 1fr;
    }

    .case-preview-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .case-preview-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .case-stat-number {
        font-size: 2rem;
    }

    .page-title {
        font-size: 2rem;
    }

    .flow-step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .comparison-table {
        font-size: 0.9rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 1rem;
    }

    .case-highlight {
        padding: 2rem;
    }

    .highlight-number {
        font-size: 2rem;
    }

    .highlight-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .highlight-stat {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .case-preview-stats {
        grid-template-columns: 1fr;
    }

    .cities-list {
        flex-direction: column;
        align-items: center;
    }
}

/* 关于我们页面样式 */
.about-section {
    padding: 5rem 0;
    background-color: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    line-height: 1.8;
}

.about-intro {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.about-detail {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-highlight {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #4a1f52 100%);
    border-radius: 12px;
    color: white;
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.mission-vision {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5e6f7 0%, #e8d4ea 100%);
}

.mission-vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.mission-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
}

.mission-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.mission-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.mission-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.mission-desc {
    color: var(--text-light);
    line-height: 1.8;
}

.timeline-section {
    padding: 5rem 0;
    background-color: var(--bg-white);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 3rem;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 0;
    width: 20px;
    height: 20px;
    background-color: var(--primary-color);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-item:nth-child(odd)::before {
    right: -10px;
}

.timeline-item:nth-child(even)::before {
    left: -10px;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.timeline-desc {
    color: var(--text-light);
    line-height: 1.6;
}

.culture-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.culture-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.culture-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.culture-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.culture-desc {
    color: var(--text-light);
    line-height: 1.8;
}

/* 关于我们页面响应式 */
@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        left: 0;
        padding-left: 50px;
        padding-right: 0;
        text-align: left;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        left: 0;
        padding-left: 50px;
        padding-right: 0;
        text-align: left;
    }

    .timeline-item::before {
        left: 10px;
    }

    .timeline-item:nth-child(odd)::before,
    .timeline-item:nth-child(even)::before {
        left: 10px;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.5rem;
    }
}

/* 核心数据部分 - 白色背景，蓝色字体 */
.stats {
    background-color: #ffffff !important;
}

.stats .stat-number {
    color: #0071e3 !important;
}

.stats .stat-label {
    color: #1d1d1f !important;
}