/* ========================================
   高端国际生殖医学中心 样式文件
   配色：莫兰迪深蓝 #1a365d + 香槟金 #c9a96e
======================================== */

/* ===== 全局重置 ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #1a365d;
    --primary-light: #2c5282;
    --primary-dark: #0f2540;
    --accent: #c9a96e;
    --accent-light: #d4b97f;
    --accent-dark: #b89458;
    --text-dark: #2d3748;
    --text-body: #4a5568;
    --text-light: #718096;
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --bg-cream: #fdfbf7;
    --border: #e2e8f0;
    --border-light: #edf2f7;
    --shadow-sm: 0 1px 3px rgba(26, 54, 93, 0.08);
    --shadow-md: 0 4px 12px rgba(26, 54, 93, 0.1);
    --shadow-lg: 0 10px 25px rgba(26, 54, 93, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1280px;
}

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-body);
    line-height: 1.7;
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Serif SC', serif;
    color: var(--primary);
    font-weight: 600;
    line-height: 1.4;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

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

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

.btn--ghost {
    background-color: transparent;
    color: white;
    border: 1px solid rgba(255,255,255,0.6);
}

.btn--ghost:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: white;
}

.btn--full {
    width: 100%;
}

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

/* ===== 通用区块头部 ===== */
.section-header {
    margin-bottom: 48px;
}

.section-header--center {
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-subtitle {
    display: inline-block;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-title {
    font-size: 32px;
    margin-bottom: 16px;
    position: relative;
}

.section-header:not(.section-header--center) .section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

.section-header--center .section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

.section-desc {
    font-size: 16px;
    color: var(--text-light);
    margin-top: 24px;
    line-height: 1.8;
}

/* ===== 顶部信息栏 ===== */
.top-bar {
    background-color: var(--primary-dark);
    color: rgba(255,255,255,0.8);
    font-size: 13px;
    padding: 8px 0;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar__contact {
    display: flex;
    align-items: center;
    gap: 20px;
}

.top-bar__phone {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-light);
    font-weight: 500;
}

.top-bar__phone:hover {
    color: var(--accent);
}

.top-bar__time {
    opacity: 0.7;
}

/* ===== 主导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    background-color: white;
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 16px 0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.brand-name h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin: 0;
}

.brand-tagline {
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 2px;
    margin: 0;
    text-transform: uppercase;
}

.main-nav {
    flex: 1;
}

.nav-list {
    display: flex;
    gap: 4px;
    justify-content: center;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition);
}

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

.nav-link:hover::after, .nav-link.active::after {
    width: calc(100% - 32px);
}

.header__cta {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
}

.header__cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== Hero区域 ===== */
.hero {
    position: relative;
    min-height: 680px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(15, 37, 64, 0.9) 0%, rgba(26, 54, 93, 0.8) 50%, rgba(26, 54, 93, 0.4) 100%);
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 680px;
    color: white;
    padding: 80px 0;
}

.hero__badge {
    display: inline-block;
    margin-bottom: 24px;
}

.hero__badge span {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(201, 169, 110, 0.2);
    border: 1px solid var(--accent);
    color: var(--accent-light);
    font-size: 13px;
    border-radius: 20px;
    letter-spacing: 1px;
}

.hero__title {
    font-size: 44px;
    font-weight: 700;
    color: white;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero__subtitle {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 36px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero__stats {
    display: flex;
    gap: 40px;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: 'Noto Serif SC', serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}

/* ===== 核心优势 ===== */
.advantages {
    padding: 80px 0;
    background-color: var(--bg-cream);
}

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

.advantage-card {
    background-color: white;
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.advantage-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.08) 0%, rgba(201, 169, 110, 0.12) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.advantage-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 医疗服务 ===== */
.services {
    padding: 80px 0;
    background-color: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.service-card--large {
    grid-column: span 3;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.service-card--large h3 {
    color: white;
    font-size: 28px;
    margin-bottom: 16px;
}

.service-card--large p {
    color: rgba(255,255,255,0.85);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 24px;
}

.service-card:hover:not(.service-card--large) {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.service-tag {
    display: inline-block;
    padding: 4px 12px;
    background-color: rgba(201, 169, 110, 0.2);
    color: var(--accent-light);
    font-size: 12px;
    border-radius: 4px;
    margin-bottom: 12px;
}

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

.service-list li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: rgba(255,255,255,0.9);
    font-size: 14px;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
}

.service-link {
    color: var(--accent-light);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.service-link:hover {
    color: white;
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.service-card > p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.service-points {
    border-top: 1px solid var(--border-light);
    padding-top: 16px;
}

.service-points li {
    font-size: 13px;
    color: var(--text-body);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

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

/* ===== IVF技术板块 ===== */
.ivf-tech {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.tech-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 48px;
    border-radius: var(--radius-md);
    overflow: hidden;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-sm);
}

.tech-tab {
    flex: 1;
    padding: 20px;
    background-color: white;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
    border-right: 1px solid var(--border-light);
}

.tech-tab:last-child {
    border-right: none;
}

.tech-tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
}

.tab-number {
    font-family: 'Noto Serif SC', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
}

.tech-tab.active .tab-number {
    color: var(--accent-light);
}

.tab-name {
    font-size: 16px;
    font-weight: 600;
}

.tab-fullname {
    font-size: 12px;
    opacity: 0.7;
}

.tech-panel {
    display: none;
    background-color: white;
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
}

.tech-panel.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tech-info h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.tech-principle {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-body);
    padding: 20px;
    background-color: var(--bg-cream);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-bottom: 28px;
}

.tech-section {
    margin-bottom: 24px;
}

.tech-section h4 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--primary);
}

.tech-section p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
}

.tech-section ul {
    padding-left: 20px;
}

.tech-section ul li {
    font-size: 15px;
    line-height: 1.8;
    padding: 4px 0;
    position: relative;
    list-style: disc;
    color: var(--text-body);
}

.tech-notice {
    display: flex;
    gap: 12px;
    padding: 20px;
    background-color: rgba(201, 169, 110, 0.08);
    border-radius: var(--radius-md);
    margin-top: 28px;
}

.tech-notice svg {
    flex-shrink: 0;
    color: var(--accent);
    margin-top: 2px;
}

.tech-notice p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-body);
}

/* ===== 专家团队 ===== */
.team {
    padding: 80px 0;
    background-color: white;
}

.team-intro__content > p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
    margin-bottom: 16px;
    max-width: 900px;
}

.team-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 36px;
    padding-top: 36px;
    border-top: 1px solid var(--border-light);
}

.team-feature {
    display: flex;
    gap: 16px;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: rgba(26, 54, 93, 0.05);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.team-feature h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.team-feature p {
    font-size: 13px;
    color: var(--text-light);
}

/* ===== 就诊流程 ===== */
.process {
    padding: 80px 0;
    background-color: var(--bg-cream);
}

.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 35px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent) 0%, var(--primary) 100%);
}

.process-step {
    position: relative;
    padding-left: 90px;
    padding-bottom: 40px;
}

.process-step:last-child {
    padding-bottom: 0;
}

.step-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Noto Serif SC', serif;
    font-size: 20px;
    font-weight: 700;
    box-shadow: 0 0 0 8px var(--bg-cream);
    z-index: 2;
}

.step-content {
    background-color: white;
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.step-content:hover {
    box-shadow: var(--shadow-md);
}

.step-content h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
}

/* ===== 就医环境 ===== */
.environment {
    padding: 80px 0;
    background-color: white;
}

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

.env-item {
    padding: 32px;
    border-radius: var(--radius-lg);
    background-color: var(--bg-light);
    transition: var(--transition);
}

.env-item:hover {
    background-color: var(--primary);
    color: white;
}

.env-item:hover h3 {
    color: white;
}

.env-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    transition: var(--transition);
}

.env-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-light);
    transition: var(--transition);
}

.env-item:hover p {
    color: rgba(255,255,255,0.85);
}

/* ===== FAQ ===== */
.faq-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: white;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.faq-question {
    width: 100%;
    padding: 24px 28px;
    background: none;
    border: none;
    text-align: left;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    font-family: 'Noto Sans SC', sans-serif;
}

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    position: relative;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background-color: var(--accent);
    transition: var(--transition);
}

.faq-icon::before {
    width: 16px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-icon::after {
    width: 2px;
    height: 16px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-item.active .faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 28px 24px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
}

/* ===== 资讯列表 - 必须严格遵守Grid规则 ===== */
.news {
    padding: 80px 0;
    background-color: white;
}

ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    box-sizing: border-box;
}

ul.article-cards > li.article-card {
    min-width: 0;
    width: auto;
    max-width: none;
    margin: 0;
    float: none;
    box-sizing: border-box;
    background-color: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

ul.article-cards > li.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.article-card .card-thumb {
    width: 100%;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.article-card .card-thumb img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-card:hover .card-thumb img {
    transform: scale(1.05);
}

.article-card .card-body {
    padding: 20px;
}

.article-card .card-title {
    overflow-wrap: anywhere;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary);
    line-height: 1.5;
}

.article-card .card-title a:hover {
    color: var(--accent);
}

.article-card .card-date {
    display: block;
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.article-card .card-summary {
    overflow-wrap: anywhere;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.about-content > .section-desc {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 800px;
}

.about-services {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.about-service-item {
    padding: 24px;
    background-color: white;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent);
    transition: var(--transition);
}

.about-service-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.about-service-item h4 {
    font-size: 15px;
    margin-bottom: 8px;
}

.about-service-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== 联系我们 ===== */
.contact {
    padding: 80px 0;
    background-color: white;
}

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

.contact-desc {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 32px;
}

.contact-methods {
    margin-bottom: 32px;
}

.contact-method {
    display: flex;
    gap: 16px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-light);
}

.contact-method:last-child {
    border-bottom: none;
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: rgba(26, 54, 93, 0.05);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.contact-method h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.contact-phone {
    font-size: 20px;
    font-weight: 600;
    color: var(--accent-dark);
    display: block;
    margin-bottom: 4px;
}

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

.contact-method p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.contact-notice {
    padding: 20px;
    background-color: #fffbeb;
    border-radius: var(--radius-md);
    border-left: 4px solid #f59e0b;
}

.contact-notice p {
    font-size: 13px;
    line-height: 1.7;
    color: #92400e;
}

.contact-form {
    background-color: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-xl);
}

.contact-form h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.contact-form > p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 28px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background-color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

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

.form-notice p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== 文章详情页 ===== */
.article-detail {
    padding: 60px 0;
    background-color: var(--bg-light);
}

.article-container {
    max-width: 820px;
    margin: 0 auto;
    background-color: white;
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-sm);
}

.article-breadcrumb {
    margin-bottom: 32px;
    font-size: 14px;
    color: var(--text-light);
}

.article-breadcrumb a {
    color: var(--text-light);
}

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

.article-title {
    font-size: 32px;
    line-height: 1.4;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--text-light);
}

.article-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-summary {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-body);
    padding: 20px;
    background-color: var(--bg-cream);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent);
    margin-bottom: 32px;
    font-weight: 500;
}

.article-cover {
    margin-bottom: 32px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: auto;
}

.article-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-body);
    margin-bottom: 40px;
}

.article-content h2,
.article-content h3,
.article-content h4 {
    margin-top: 32px;
    margin-bottom: 16px;
}

.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content h4 { font-size: 18px; }

.article-content p {
    margin-bottom: 16px;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 24px 0;
}

.article-content ul,
.article-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.article-content li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.medical-disclaimer {
    display: flex;
    gap: 16px;
    padding: 24px;
    background-color: #fef2f2;
    border-radius: var(--radius-md);
    border-left: 4px solid #ef4444;
    margin-bottom: 40px;
}

.disclaimer-icon {
    flex-shrink: 0;
    color: #ef4444;
    margin-top: 2px;
}

.disclaimer-content h4 {
    font-size: 16px;
    color: #991b1b;
    margin-bottom: 8px;
}

.disclaimer-content p {
    font-size: 13px;
    line-height: 1.7;
    color: #7f1d1d;
    margin-bottom: 8px;
}

.related-topics {
    margin-bottom: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-light);
}

.related-topics h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.topic-card {
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.topic-card:hover {
    background-color: var(--bg-cream);
    border-left: 3px solid var(--accent);
}

.topic-card h4 {
    font-size: 15px;
    margin-bottom: 6px;
}

.topic-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.article-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
}

.cta-section {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 28px;
    color: white;
    margin-bottom: 12px;
}

.cta-content p {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 28px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== 页脚 ===== */
.site-footer {
    background-color: var(--primary-dark);
    color: rgba(255,255,255,0.7);
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
    font-size: 22px;
    color: white;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--accent-light);
}

.footer-phone:hover {
    color: white;
}

.footer-col h4 {
    font-size: 16px;
    color: white;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.footer-col ul li a:hover {
    color: var(--accent-light);
    padding-left: 4px;
}

.footer-links-group {
    margin-top: 20px;
}

.footer-links-group a {
    display: inline-block;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-right: 12px;
    margin-bottom: 8px;
}

.footer-links-group a:hover {
    color: var(--accent-light);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-copyright p {
    font-size: 13px;
    margin-bottom: 6px;
}

.footer-notice {
    font-size: 12px;
    opacity: 0.6;
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--accent);
    transform: translateY(-3px);
}

/* ===== 响应式适配 ===== */
@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-card--large {
        grid-column: span 2;
        grid-template-columns: 1fr;
    }
    
    .env-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-services {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-list.active {
        max-height: 500px;
    }
    
    .nav-link {
        padding: 12px 0;
        border-bottom: 1px solid var(--border-light);
    }
    
    .header__cta {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 60px 0;
    }
    
    .hero__title {
        font-size: 32px;
    }
    
    .hero__subtitle {
        font-size: 15px;
    }
    
    .hero__actions {
        flex-direction: column;
    }
    
    .hero__actions .btn {
        width: 100%;
    }
    
    .hero__stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card--large {
        grid-column: span 1;
        padding: 28px;
    }
    
    .tech-tabs {
        flex-direction: column;
    }
    
    .tech-tab {
        border-right: none;
        border-bottom: 1px solid var(--border-light);
    }
    
    .tech-panel {
        padding: 28px 20px;
    }
    
    .team-features {
        grid-template-columns: 1fr;
    }
    
    .env-features {
        grid-template-columns: 1fr;
    }
    
    .about-services {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form {
        padding: 28px 20px;
    }
    
    .article-container {
        padding: 28px 20px;
    }
    
    .article-title {
        font-size: 24px;
    }
    
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .article-actions {
        flex-direction: column;
    }
    
    .article-actions .btn {
        width: 100%;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .process-timeline::before {
        left: 24px;
    }
    
    .process-step {
        padding-left: 64px;
    }
    
    .step-number {
        width: 48px;
        height: 48px;
        font-size: 16px;
    }
}

/* 减少动效偏好支持 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}