/* ============================================
   91系列 - 娱乐公关与艺人声誉管理平台
   主色调：#1B4F72（深海蓝）
   辅助色：#D4AF37（香槟金）
   背景色：#FFFFFF（纯白）
   卡片色：#F8F9F9（极简灰）
   正文色：#2C3E50
   ============================================ */

/* === 基础重置与变量 === */
:root {
    --color-primary: #1B4F72;
    --color-primary-light: #2471A3;
    --color-primary-dark: #154360;
    --color-accent: #D4AF37;
    --color-accent-light: #E8C84A;
    --color-bg: #FFFFFF;
    --color-card: #F8F9F9;
    --color-text: #2C3E50;
    --color-text-light: #5D6D7E;
    --color-border: #E5E8E8;
    --color-success: #27AE60;
    --color-warning: #F39C12;
    --color-danger: #E74C3C;
    --font-primary: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    --font-heading: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --shadow-sm: 0 2px 8px rgba(27, 79, 114, 0.08);
    --shadow-md: 0 4px 16px rgba(27, 79, 114, 0.12);
    --shadow-lg: 0 8px 32px rgba(27, 79, 114, 0.16);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
    list-style: none;
}

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

/* === 导航栏 === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
}

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

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding: 4px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

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

.nav-menu a.active {
    color: var(--color-primary);
    font-weight: 600;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* === 英雄区 === */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1A5276 100%);
    padding-top: 72px;
}

.particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

.hero-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #FFFFFF;
    max-width: 800px;
    padding: 40px 24px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 4px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-accent);
    margin-bottom: 24px;
    font-weight: 500;
}

.hero-desc {
    font-size: 1.1rem;
    line-height: 1.9;
    opacity: 0.9;
    margin-bottom: 40px;
}

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

/* === 按钮 === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
}

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

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

.btn-small {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.05rem;
}

/* === 通用区块 === */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--color-text-light);
}

.section-footer {
    text-align: center;
    margin-top: 48px;
}

/* === 服务卡片 === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

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

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.service-card h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.card-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent);
}

/* === 舆情监测区 === */
.monitoring-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.feature-list li {
    margin-bottom: 24px;
    padding-left: 20px;
    border-left: 3px solid var(--color-accent);
}

.feature-list li strong {
    display: block;
    font-size: 1.05rem;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.feature-list li span {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.monitoring-visual {
    position: relative;
}

.monitoring-visual img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.radar-chart-container {
    margin-top: 24px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
}

/* === 时间线 === */
.section-timeline {
    background: var(--color-card);
}

.timeline-wrapper {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline-wrapper::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-primary));
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 24px;
}

.timeline-dot {
    position: absolute;
    left: -32px;
    top: 4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid var(--color-bg);
    box-shadow: 0 0 0 3px var(--color-accent);
}

.timeline-item::before {
    content: attr(data-time);
    position: absolute;
    left: -32px;
    top: 28px;
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 600;
    white-space: nowrap;
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* === 案例卡片 === */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.case-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    perspective: 1000px;
}

.case-card:hover {
    box-shadow: var(--shadow-lg);
}

.case-front, .case-back {
    transition: var(--transition);
}

.case-front img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-front .case-label {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-accent);
    color: var(--color-primary-dark);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.case-front h4 {
    padding: 16px;
    font-size: 1rem;
    color: var(--color-primary);
}

.case-back {
    display: none;
    padding: 24px;
    background: var(--color-primary);
    color: #FFFFFF;
}

.case-card:hover .case-front {
    display: none;
}

.case-card:hover .case-back {
    display: block;
}

.case-back p {
    margin-bottom: 12px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.case-back .btn-small {
    background: var(--color-accent);
    color: var(--color-primary-dark);
}

/* === 行业洞察 === */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.insight-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
}

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

.insight-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.insight-body {
    padding: 20px;
}

.insight-tag {
    display: inline-block;
    background: var(--color-primary);
    color: #FFFFFF;
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.insight-body h4 {
    font-size: 1.05rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.insight-body p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 12px;
}

/* === 风险计算器 === */
.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.risk-calculator {
    background: var(--color-card);
    padding: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.calc-row {
    margin-bottom: 20px;
}

.calc-row label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.calc-row select,
.calc-row input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.calc-row select:focus,
.calc-row input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

.calc-result {
    background: var(--color-primary);
    color: #FFFFFF;
    padding: 32px;
    border-radius: var(--radius-md);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-placeholder p {
    text-align: center;
    opacity: 0.7;
}

.result-data {
    width: 100%;
}

.result-data h3 {
    color: var(--color-accent);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

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

/* === 联系区 === */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 24px;
}

.contact-icon {
    font-size: 2rem;
    color: var(--color-accent);
}

.contact-item h4 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

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

.contact-cta img {
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

/* === 页脚 === */
.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

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

.footer-brand h3 {
    color: #FFFFFF;
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.footer-brand p {
    font-size: 0.85rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--color-accent);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.footer-links ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    margin-bottom: 4px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

/* === 页面英雄区 === */
.page-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
    padding: 120px 0 60px;
    text-align: center;
}

.page-hero-dark {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.page-hero-urgent {
    background: linear-gradient(135deg, #922B21 0%, #C0392B 50%, var(--color-primary-dark) 100%);
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.breadcrumb {
    margin-bottom: 16px;
    font-size: 0.85rem;
    opacity: 0.8;
}

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

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

/* === 页面内容 === */
.page-intro {
    max-width: 900px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
    line-height: 2;
    color: var(--color-text);
    text-align: center;
}

/* === 服务详情页 === */
.services-detail-grid {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.service-detail-card {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 32px;
    align-items: start;
    padding: 32px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.service-detail-card img {
    border-radius: var(--radius-sm);
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-detail-body h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.service-detail-body p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    margin-bottom: 20px;
}

.service-features li {
    padding: 6px 0 6px 20px;
    position: relative;
    font-size: 0.9rem;
    color: var(--color-text);
}

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

/* === 案例列表 === */
.cases-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.case-list-item {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 32px;
    align-items: start;
    padding: 24px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.case-list-item:hover {
    box-shadow: var(--shadow-md);
}

.case-list-item img {
    border-radius: var(--radius-sm);
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.case-body .case-tag {
    display: inline-block;
    background: var(--color-primary);
    color: #FFFFFF;
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.case-body h2 {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.case-body p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.case-metrics {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
}

.metric {
    text-align: center;
}

.metric strong {
    display: block;
    font-size: 1.5rem;
    color: var(--color-accent);
}

.metric span {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* === 洞察列表 === */
.insights-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.insight-list-item {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    align-items: start;
    padding: 24px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.insight-list-item img {
    border-radius: var(--radius-sm);
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.insight-list-body h2 {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.insight-list-body p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* === 详情页 === */
.detail-content {
    max-width: 800px;
    margin: 0 auto;
}

.detail-content img {
    border-radius: var(--radius-md);
    margin-bottom: 32px;
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.detail-content h2 {
    font-size: 1.6rem;
    color: var(--color-primary);
    margin: 32px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-accent);
}

.detail-content h3 {
    font-size: 1.2rem;
    color: var(--color-primary-light);
    margin: 24px 0 12px;
}

.detail-content p {
    font-size: 0.95rem;
    line-height: 2;
    margin-bottom: 16px;
    color: var(--color-text);
}

/* === 相关链接 === */
.related-links {
    margin-top: 48px;
    padding: 24px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.related-links h3 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.related-links ul li {
    padding: 6px 0;
}

.related-links ul li a {
    font-size: 0.9rem;
    color: var(--color-primary-light);
}

.related-links ul li a:hover {
    color: var(--color-accent);
}

/* === FAQ === */
.section-faq {
    background: var(--color-card);
}

.section-faq h2 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 32px;
    text-align: center;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.faq-item h4 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.faq-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* === 联系页面 === */
.contact-page-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 48px;
}

.contact-form-section h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.form-notice {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(27, 79, 114, 0.1);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.form-checkbox input {
    width: auto;
    margin-top: 4px;
}

.form-checkbox label {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--color-text-light);
}

.emergency-card {
    background: var(--color-primary);
    color: #FFFFFF;
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
    margin-bottom: 24px;
}

.emergency-card h3 {
    margin-bottom: 8px;
}

.phone-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.info-card {
    background: var(--color-card);
    padding: 24px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border: 1px solid var(--color-border);
}

.info-card h3 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.info-card ul li {
    padding: 4px 0 4px 16px;
    position: relative;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.info-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.contact-info-section img {
    border-radius: var(--radius-md);
    width: 100%;
}

/* === 监测功能块 === */
.monitoring-features {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.feature-block.reverse {
    direction: rtl;
}

.feature-block.reverse > * {
    direction: ltr;
}

.feature-block img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.feature-text h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.feature-text p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.9;
}

/* === 专题页 === */
.topic-content {
    max-width: 800px;
    margin: 0 auto;
}

.topic-content h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin: 36px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-accent);
}

.topic-content p {
    font-size: 0.95rem;
    line-height: 2;
    margin-bottom: 16px;
}

/* === 法律页面 === */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin: 32px 0 12px;
}

.legal-content p {
    font-size: 0.9rem;
    line-height: 1.9;
    margin-bottom: 12px;
    color: var(--color-text);
}

/* === 错误页面 === */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 72px;
}

.error-content {
    text-align: center;
    max-width: 600px;
}

.error-code {
    font-size: 6rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.error-content h1 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.error-content p {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.error-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.error-suggestions h3 {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 12px;
}

.error-suggestions ul li {
    padding: 4px 0;
}

/* === 搜索页 === */
.search-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

.search-form {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
}

.search-form input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.search-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-placeholder {
    text-align: center;
    padding: 40px 0;
}

.hot-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 16px;
}

.tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--color-text);
    transition: var(--transition);
}

.tag:hover {
    background: var(--color-primary);
    color: #FFFFFF;
    border-color: var(--color-primary);
}

.search-result-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.search-result-item h3 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.search-result-item p {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* === APP页面 === */
.app-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.app-info h2 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.app-info > p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 32px;
}

.app-features-list {
    margin-bottom: 32px;
}

.app-feature {
    margin-bottom: 20px;
    padding-left: 16px;
    border-left: 3px solid var(--color-accent);
}

.app-feature h3 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.app-feature p {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.app-download-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.app-note {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.app-visual img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

/* === 动画 === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes drawLine {
    from { stroke-dashoffset: 1000; }
    to { stroke-dashoffset: 0; }
}

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .monitoring-showcase,
    .calculator-wrapper,
    .contact-wrapper,
    .app-showcase {
        grid-template-columns: 1fr;
    }
    
    .feature-block,
    .feature-block.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-md);
        gap: 16px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.6rem;
    }
    
    .page-hero h1 {
        font-size: 1.8rem;
    }
    
    .service-detail-card {
        grid-template-columns: 1fr;
    }
    
    .case-list-item {
        grid-template-columns: 1fr;
    }
    
    .insight-list-item {
        grid-template-columns: 1fr;
    }
    
    .contact-page-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .case-metrics {
        flex-wrap: wrap;
    }
    
    .timeline-item::before {
        display: none;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .section {
        padding: 48px 0;
    }
}