/* 全局重置和变量 */
:root {
    --primary-color: #0066cc;
    --secondary-color: #00a86b;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

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

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

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

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

.nav-brand .logo-img {
    height: 56px;
    width: auto;
    display: block;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-brand .tagline {
    font-size: 0.75rem;
    color: var(--text-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    margin: 3px 0;
    transition: 0.3s;
}

.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);
}

/* Hero区域 */
.hero {
    margin-top: 88px;
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid transparent;
}

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

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

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

/* 使命区域 */
.mission {
    padding: 80px 0;
    background: var(--primary-color);
    color: white;
    text-align: center;
}

.mission .section-title {
    color: white;
}

.mission .section-title::after {
    background: rgba(255,255,255,0.5);
}

.mission-text {
    font-size: 1.5rem;
    line-height: 2;
    opacity: 0.95;
}

/* 通用section样式 */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2.5rem;
}

/* 服务模块 */
.services {
    padding: 80px 0;
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

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

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

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

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 优势区域 */
.advantages {
    padding: 80px 0;
    background: var(--bg-white);
}

.advantage-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.advantage-item {
    padding: 1.5rem;
    border-left: 4px solid var(--primary-color);
    background: var(--bg-light);
    border-radius: 0 8px 8px 0;
}

.advantage-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

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

/* 关于我们 */
.about {
    padding: 80px 0;
    background: var(--bg-light);
}

.about-content {
    margin: 2rem 0;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin: 3rem 0 1.5rem;
    color: var(--text-dark);
}

.section-divider {
    border: none;
    border-top: 1px solid #e0e0e0;
    margin: 3rem 0;
}

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

.value-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.value-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.value-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 创始人卡片 */
.founder-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin: 1.5rem 0;
}

.founder-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary-color);
}

.founder-header h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
}

.founder-role {
    background: var(--primary-color);
    color: white;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.founder-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 0.75rem;
}

.founder-card p:last-child {
    margin-bottom: 0;
}

/* 创始人标签 */
.founder-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 1rem;
}

.founder-tags span {
    background: #f0f4ff;
    color: #3b5998;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* 地图容器 */
.map-container {
    margin-top: 2rem;
}

#map {
    width: 100%;
    height: 400px;
    border-radius: 12px;
    z-index: 1;
}

.info-sub {
    font-size: 0.85rem !important;
    color: #999 !important;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
    align-items: start;
}

.info-item {
    margin-bottom: 1.5rem;
}

.info-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-dark);
}

.info-item p {
    color: var(--text-light);
}

.contact-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2.5rem;
    border-radius: 12px;
}

.contact-cta h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-cta p {
    opacity: 0.9;
    line-height: 1.7;
}

/* 企业微信客服 QR 卡 */
.contact-qr {
    display: flex;
    justify-content: center;
}
.qr-card {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    text-align: center;
    max-width: 260px;
    transition: transform 0.2s;
}
.qr-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.12);
}
.qr-card .qr-img {
    width: 100%;
    display: block;
    aspect-ratio: 1;
    object-fit: contain;
    padding: 1rem;
    background: #fafafa;
}
.qr-card .qr-info {
    padding: 1rem 1.25rem 1.25rem;
}
.qr-card .qr-info h4 {
    font-size: 1rem;
    margin-bottom: 0.35rem;
    color: var(--text-dark);
}
.qr-card .qr-info p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: 0.5rem;
}
.qr-card .qr-name {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: linear-gradient(135deg, #07c160 0%, #06ad56 100%);
    color: white;
    border-radius: 14px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 浮动客服按钮 */
.floating-service {
    position: fixed;
    right: 20px;
    bottom: 120px;
    z-index: 9999;
}
.floating-service-btn {
    height: 52px;
    padding: 0 20px 0 16px;
    border-radius: 26px;
    background: linear-gradient(135deg, #07c160 0%, #06ad56 100%);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(7,193,96,0.4);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: inherit;
    position: relative;
    z-index: 2;
    overflow: visible;
}
.floating-service-btn:hover {
    transform: scale(1.06);
    box-shadow: 0 6px 28px rgba(7,193,96,0.55);
}
.floating-service-btn .service-icon {
    font-size: 1.25rem;
    line-height: 1;
}
.floating-service-btn .service-label {
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: 0.5px;
}
/* 脉冲呼吸动画 */
.floating-service-btn .service-pulse {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 26px;
    border: 2px solid rgba(7,193,96,0.6);
    animation: pulse-ring 2s ease-out infinite;
    pointer-events: none;
}
@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.25); opacity: 0; }
}
.floating-service-popup {
    position: absolute;
    right: 0;
    bottom: 66px;
    width: 240px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    overflow: hidden;
    transform-origin: bottom right;
    transform: scale(0);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
    pointer-events: none;
}
.floating-service.open .floating-service-popup {
    transform: scale(1);
    opacity: 1;
    pointer-events: auto;
}
.floating-service-popup .popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: #f5f5f5;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
}
.floating-service-popup .popup-close {
    width: 24px;
    height: 24px;
    border: none;
    background: #e0e0e0;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-family: inherit;
}
.floating-service-popup .popup-qr {
    width: 100%;
    display: block;
    padding: 0.75rem;
    background: #fafafa;
}
.floating-service-popup .popup-name {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0.5rem 0 0.25rem;
}
.floating-service-popup .popup-tip {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-light);
    margin: 0 0 0.75rem;
    padding: 0 0.75rem;
    line-height: 1.4;
}

/* 页脚 */
.footer {
    background: #1a1a2e;
    color: rgba(255,255,255,0.7);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.footer-slogan {
    opacity: 0.5;
    font-size: 0.8rem !important;
}

/* ========== 能源产品生态 ========== */
.ecosystem {
    padding: 80px 0;
    background: var(--bg-white);
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.eco-card {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 2rem;
    border-top: 4px solid var(--primary-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.eco-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.eco-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.35rem;
    color: var(--text-dark);
}

.eco-subtitle {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.eco-features {
    list-style: none;
    padding: 0;
}

.eco-features li {
    padding: 0.35rem 0;
    font-size: 0.9rem;
    color: var(--text-light);
    position: relative;
    padding-left: 1.2rem;
}

.eco-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 0.85rem;
}

/* 燃料安全对比表 */
.safety-compare {
    margin-top: 3.5rem;
}

.compare-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1.5rem 0;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.compare-table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
    background: var(--bg-white);
    font-size: 0.9rem;
}

.compare-table thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.compare-table th {
    padding: 1rem 0.75rem;
    text-align: center;
    font-weight: 600;
    white-space: nowrap;
}

.compare-table th:first-child {
    text-align: left;
    padding-left: 1.2rem;
    min-width: 100px;
}

.compare-table td {
    padding: 0.8rem 0.75rem;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
    font-weight: 500;
}

.compare-table td:first-child {
    text-align: left;
    padding-left: 1.2rem;
    color: var(--text-dark);
    font-weight: 600;
    background: #fafafa;
}

.compare-table tbody tr:hover {
    background: #f8f9ff;
}

.compare-table .danger {
    color: #dc3545;
    font-weight: 600;
}

.compare-table .warning {
    color: #e67e22;
}

.compare-table .safe {
    color: #27ae60;
    font-weight: 500;
}

.table-note {
    text-align: center;
    color: #999;
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

/* ========== 行业趋势与洞察 ========== */
.industry {
    padding: 80px 0;
    background: var(--bg-light);
}

.trends-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.trend-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.trend-icon {
    font-size: 2.2rem;
    margin-bottom: 0.75rem;
}

.trend-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.trend-card p {
    color: var(--text-light);
    font-size: 0.93rem;
    line-height: 1.75;
}

.trend-tag {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.25rem 0.75rem;
    background: #e8f0fe;
    color: var(--primary-color);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 行业数据统计 */
.industry-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
}

.stat-item {
    text-align: center;
    padding: 1rem;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: white;
    line-height: 1.2;
}

.stat-unit {
    font-size: 1.2rem;
    font-weight: 400;
    opacity: 0.8;
}

.stat-label {
    display: block;
    color: rgba(255,255,255,0.85);
    font-size: 0.85rem;
    margin-top: 0.35rem;
}

/* ========== 新闻中心 ========== */
.news-section {
    padding: 80px 0;
    background: var(--bg-white);
}

/* Tab 切换 */
.news-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin: 2rem 0;
    border-bottom: 2px solid var(--border-color);
}

.news-tab {
    background: none;
    border: none;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
}

.news-tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.news-tab:hover {
    color: var(--text-dark);
}

.news-tab.active {
    color: var(--primary-color);
    font-weight: 600;
}

.news-tab.active::after {
    transform: scaleX(1);
}

/* 新闻面板 */
.news-panel {
    display: none;
}

.news-panel.active {
    display: block;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.news-card {
    display: flex;
    gap: 1.25rem;
    background: var(--bg-light);
    border-radius: 10px;
    padding: 1.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.news-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-width: 56px;
    padding-top: 2px;
}

.news-date span {
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    line-height: 1;
}

.news-date em {
    font-size: 1.3rem;
    color: var(--text-dark);
    font-weight: 700;
    font-style: normal;
    line-height: 1.3;
}

.news-body h4 {
    font-size: 0.95rem;
    color: var(--text-dark);
    margin-bottom: 0.4rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-body p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.news-tag {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 10px;
    background: #e8f0fe;
    color: var(--primary-color);
    border-radius: 10px;
    font-weight: 500;
}

/* ========== 行业信息板块 ========== */
.industry-info-section {
    padding: 80px 0;
    background: var(--bg-light);
}

/* 子Tab切换 */
.info-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.info-tab {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    padding: 0.6rem 1.8rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    border-radius: 25px;
    transition: all 0.3s;
}

.info-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.info-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

/* 面板显隐 */
.info-panel { display: none; }
.info-panel.active { display: block; }

/* 副标题 */
.info-subtitle {
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
    margin: 2.5rem 0 1.5rem;
    color: var(--text-dark);
}

/* ===== 政策逻辑链 ===== */
.policy-logic-chain {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.policy-logic-chain h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.15rem;
}

.logic-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.logic-step {
    background: var(--bg-light);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 500;
    text-align: center;
    border: 2px solid var(--border-color);
}

.logic-step .step-num {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-size: 0.75rem;
    line-height: 22px;
    text-align: center;
    margin-right: 4px;
}

.logic-step.highlight {
    background: #e8f5e9;
    border-color: var(--secondary-color);
    font-weight: 700;
}

.logic-arrow {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 700;
    transition: transform 0.3s ease;
}

/* ===== 时间线 ===== */
.timeline {
    position: relative;
    padding-left: 40px;
    margin: 1.5rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary-color), var(--border-color));
    border-radius: 2px;
}

.tl-item {
    position: relative;
    margin-bottom: 1.5rem;
    padding: 1.2rem 1.5rem;
    background: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.tl-item:hover {
    transform: translateX(4px);
}

.tl-item::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 20px;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.tl-item.highlight::before {
    background: #e74c3c;
    box-shadow: 0 0 0 2px #e74c3c;
}

.tl-item.highlight {
    border-left: 4px solid #e74c3c;
}

.tl-year {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.tl-item.highlight .tl-year {
    color: #e74c3c;
}

.tl-content h4 {
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
    color: var(--text-dark);
}

.tl-content p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.tl-tag {
    display: inline-block;
    font-size: 0.72rem;
    padding: 2px 10px;
    border-radius: 10px;
    font-weight: 500;
}

.level-nation { background: #ffe0e0; color: #c0392b; }
.level-prov { background: #fff3e0; color: #e67e22; }
.level-city { background: #e3f2fd; color: #1565c0; }
.level-assoc { background: #f3e5f5; color: #7b1fa2; }

/* ===== 双轨制 ===== */
.dual-track {
    margin-top: 2rem;
}

.dual-track h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.dual-track-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.track-card {
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.track-ban {
    background: #fff5f5;
    border: 2px solid #ffcccc;
}

.track-allow {
    background: #f0fff4;
    border: 2px solid #c6f6d5;
}

.track-card h4 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.track-card ul {
    list-style: none;
    padding: 0;
}

.track-card li {
    padding: 0.35rem 0;
    font-size: 0.88rem;
    color: var(--text-light);
}

.track-card li::before {
    content: '• ';
    font-weight: 700;
}

.track-ban li::before { color: #e74c3c; }
.track-allow li::before { color: var(--secondary-color); }

/* ===== 标准金字塔 ===== */
.standards-hierarchy h3 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.pyramid {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.pyra-level {
    margin: 0 auto;
    padding: 1rem 1.5rem;
    text-align: center;
    border-radius: 6px;
    color: white;
}

.pyra-level strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 0.4rem;
}

.pyra-level span {
    display: block;
    font-size: 0.8rem;
    opacity: 0.9;
    line-height: 1.5;
}

.pyra-national {
    width: 95%;
    background: #c0392b;
}

.pyra-industry {
    width: 85%;
    background: #e67e22;
}

.pyra-local {
    width: 72%;
    background: #2980b9;
}

.pyra-group {
    width: 60%;
    background: #27ae60;
}

/* ===== 指标表 ===== */
.indicator-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1rem 0;
}

.indicator-table {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    border-collapse: collapse;
    background: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    font-size: 0.9rem;
}

.indicator-table thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.indicator-table th {
    padding: 0.75rem 1rem;
    text-align: center;
    font-weight: 600;
}

.indicator-table td {
    padding: 0.6rem 1rem;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
}

.indicator-table tbody tr:hover {
    background: #f8f9ff;
}

/* ===== 七大维度 ===== */
.dims-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    max-width: 700px;
    margin: 1rem auto;
}

.dim-card {
    background: var(--bg-white);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.75rem;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s;
}

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

.dims-grid .dim-card:last-child {
    grid-column: 1 / -1;
    justify-self: center;
}

/* ===== 标准空白 ===== */
.gap-box {
    background: #fffbf0;
    border: 2px solid #f0c040;
    border-radius: 10px;
    padding: 1.5rem;
    margin-top: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.gap-box h4 {
    color: #b8860b;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.gap-box ul {
    list-style: none;
    padding: 0;
}

.gap-box li {
    padding: 0.3rem 0;
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.6;
}

.gap-box li::before {
    content: '▪ ';
    color: #f0c040;
    font-weight: 700;
}

/* ===== 产业链图 ===== */
.chain-overview h3 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.chain-map {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.chain-node {
    margin: 0.5rem 0;
}

.chain-node h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.chain-card {
    display: inline-block;
    background: var(--bg-white);
    border: 2px solid var(--primary-color);
    border-radius: 10px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    box-shadow: var(--shadow);
}

.chain-card small {
    display: block;
    font-weight: 400;
    color: var(--text-light);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.chain-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0.25rem 0;
}

.chain-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 0.5rem;
}

.chain-card-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    justify-content: center;
    margin-top: 0.5rem;
}

.chain-card-list span {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.7rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s;
}

.chain-card-list span:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ===== 产业格局对比大表 ===== */
.compare-big-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0.75rem 0 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.compare-big {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    min-width: 700px;
    background: var(--bg-white);
}

.compare-big thead th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.7rem 0.5rem;
    text-align: center;
    font-weight: 600;
}

.compare-big thead th:first-child {
    text-align: left;
    padding-left: 0.75rem;
}

.compare-big tbody td {
    padding: 0.55rem 0.5rem;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
}

.compare-big tbody td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    background: #fafafa;
    padding-left: 0.75rem;
}

.compare-big tbody tr:hover {
    background: #f8f9ff;
}

/* ===== 竞争发现 ===== */
.findings-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-top: 1rem;
}

.finding-card {
    background: var(--bg-white);
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border-top: 3px solid var(--primary-color);
}

.finding-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.finding-card p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== 产品展示 ========== */
.product-showcase {
    padding: 80px 0;
    background: var(--bg-light);
}

/* ===== 商户端：2列并排 ===== */
.showcase-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

/* ===== PC端：独立全宽 ===== */
.showcase-card--wide {
    margin-top: 2rem;
}

/* ===== 卡片容器 ===== */
.showcase-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.showcase-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

/* 统一横向布局：图片在左，信息在右 */
.showcase-card-inner {
    display: flex;
    align-items: stretch;
}

/* 手机卡片：图片区稍窄 */
.showcase-card:not(.showcase-card--wide) .device-frame {
    flex: 0 0 42%;
    min-height: 440px;
    position: relative;
}

.showcase-card:not(.showcase-card--wide) .showcase-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* PC宽卡：图片区稍宽 */
.showcase-card--wide .device-frame {
    flex: 0 0 55%;
    min-height: 380px;
    position: relative;
}

.showcase-card--wide .showcase-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ===== 设备模型框 ===== */
.device-frame {
    overflow: hidden;
    position: relative;
}

/* 3D 手机模型：截图自带手机框，只需加上透视和阴影 */
.device-phone-3d {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
}

.device-phone-3d .carousel-viewport {
    border-radius: 28px;
    box-shadow:
        0 25px 60px rgba(0,0,0,0.3),
        0 10px 25px rgba(0,0,0,0.2),
        0 0 0 2px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: #111;
}

.device-phone-3d .carousel-viewport:hover {
    transform: translateY(-4px);
    box-shadow:
        0 30px 70px rgba(0,0,0,0.35),
        0 12px 30px rgba(0,0,0,0.25),
        0 0 0 2px rgba(0,0,0,0.1);
}

/* 桌面浏览器框 */
.desktop-frame {
    padding: 2rem 1.25rem 1.25rem;
    background: linear-gradient(180deg, #f0f0f0 0%, #e8e8e8 100%);
}

.desktop-bar {
    position: absolute;
    top: 0.5rem;
    left: 1.25rem;
    display: flex;
    gap: 7px;
    z-index: 2;
}

.desktop-bar .dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

.desktop-bar .dot.red { background: #ff5f57; }
.desktop-bar .dot.yellow { background: #febc2e; }
.desktop-bar .dot.green { background: #28c840; }

/* ===== 轮播核心 ===== */
.carousel-viewport {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.device-phone-3d .carousel-viewport {
    max-width: 220px;
}

.desktop-frame .carousel-viewport {
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.desktop-frame .carousel-viewport img {
    border-radius: 4px;
}

.carousel-track {
    display: flex;
    height: 100%;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.carousel-track img {
    min-width: 100%;
    width: 100%;
    height: auto;
    display: block;
}

.device-phone-3d .carousel-track img {
    border-radius: 26px;
}

/* 轮播箭头 */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.9);
    color: #333;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 3;
    line-height: 1;
}

.carousel-prev { left: 8px; }
.carousel-next { right: 8px; }

.device-frame:hover .carousel-arrow { opacity: 1; }
.carousel-arrow:hover { background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.25); }

/* 轮播指示点 */
.carousel-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 3;
    opacity: 0;
    transition: opacity 0.3s;
}

.device-frame:hover .carousel-dots { opacity: 1; }

.carousel-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}

.carousel-dot.active {
    background: #fff;
    width: 18px;
    border-radius: 4px;
}

/* 页码指示器 */
.carousel-page-indicator {
    font-size: 0.78rem;
    color: #999;
    margin-top: 0.5rem;
}

/* ===== 产品信息区 ===== */
.showcase-info {
    padding: 1.5rem;
}

.showcase-info h3 {
    font-size: 1.15rem;
    color: var(--text-dark);
    margin-bottom: 0.35rem;
}

.showcase-role {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--primary-color);
    background: #e8f0fe;
    padding: 2px 10px;
    border-radius: 10px;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.showcase-info > p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.65;
    margin-bottom: 0.75rem;
}

.showcase-features {
    list-style: none;
    padding: 0;
    margin-bottom: 0.5rem;
}

.showcase-features li {
    padding: 0.3rem 0;
    font-size: 0.85rem;
    color: var(--text-light);
    position: relative;
    padding-left: 1.1rem;
}

.showcase-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 0.8rem;
}

/* ===== 招聘 CTA ===== */
.showcase-cta {
    margin-top: 3rem;
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    color: white;
}

.showcase-cta h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.showcase-cta p {
    font-size: 1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 1.5rem;
    line-height: 1.7;
}

.showcase-cta .btn {
    font-size: 1.05rem;
    padding: 14px 40px;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu a {
        display: block;
        padding: 0.75rem 0;
    }

    .hero {
        padding: 60px 0;
    }

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

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantage-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .ecosystem-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .trends-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .industry-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 行业信息移动端 */
    .logic-steps {
        flex-direction: column;
    }
    .logic-arrow {
        transform: rotate(90deg);
    }
    .dual-track-grid {
        grid-template-columns: 1fr;
    }
    .dims-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .chain-split {
        grid-template-columns: 1fr;
    }
    .findings-grid {
        grid-template-columns: 1fr;
    }

    .showcase-row {
        grid-template-columns: 1fr;
    }
    .showcase-card-inner {
        flex-direction: column;
    }
    .showcase-card:not(.showcase-card--wide) .device-frame,
    .showcase-card--wide .device-frame {
        flex: 0 0 auto;
        min-height: 360px;
    }
    .carousel-arrow { opacity: 0.75; }
    .carousel-dots { opacity: 0.75; }
    .device-phone-3d .carousel-viewport {
        max-width: 200px;
    }

    .showcase-cta {
        padding: 2rem 1.25rem;
    }

    .showcase-cta h3 {
        font-size: 1.25rem;
    }

    .compare-table {
        font-size: 0.8rem;
    }

    .compare-table th,
    .compare-table td {
        padding: 0.6rem 0.5rem;
    }

    #map {
        height: 280px;
    }
}

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantage-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .ecosystem-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .trends-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .industry-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dims-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .showcase-row {
        grid-template-columns: 1fr;
    }
    .showcase-card-inner {
        flex-direction: column;
    }
    .showcase-card:not(.showcase-card--wide) .device-frame,
    .showcase-card--wide .device-frame {
        flex: 0 0 auto;
        min-height: 360px;
    }

    .compare-table {
        font-size: 0.85rem;
    }

    .compare-table th,
    .compare-table td {
        padding: 0.7rem 0.5rem;
    }
}

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

    .advantage-list {
        grid-template-columns: 1fr;
    }

    .ecosystem-grid {
        grid-template-columns: 1fr;
    }

    .trends-grid {
        grid-template-columns: 1fr;
    }

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

    .news-grid {
        grid-template-columns: 1fr;
    }

    .dims-grid {
        grid-template-columns: 1fr;
    }
    .dims-grid .dim-card:last-child {
        grid-column: auto;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.6rem;
    }
}