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

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

body {
    font-family: 'Segoe UI', 'PingFang SC', Roboto, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f4f4f9;
    transition: background 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

/* 暗色模式 */
body.dark-mode {
    background: #0d1117;
    color: #e0e6ed;
}

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

/* 标题通用 */
h1, h2, h3, h4 {
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; color: #e94560; }
h3 { font-size: 1.6rem; }

p { margin-bottom: 16px; }

a {
    color: #0ea5e9;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #e94560;
    text-decoration: underline;
}

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

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-block;
    padding: 14px 34px;
    background: linear-gradient(135deg, #e94560, #c23152);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 4px 20px rgba(233, 69, 96, 0.35);
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.5);
    text-decoration: none;
    color: #fff;
}

.btn-secondary {
    display: inline-block;
    padding: 14px 34px;
    background: transparent;
    border: 2px solid #fff;
    color: #fff;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.05rem;
    cursor: pointer;
    transition: all 0.35s;
    text-decoration: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
    text-decoration: none;
    color: #fff;
}

/* ===== 头部导航 ===== */
header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(6px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 24px;
}

.logo {
    display: flex;
    align-items: center;
    transition: opacity 0.3s;
}

.logo:hover {
    opacity: 0.85;
}

.logo img {
    width: 180px;
    height: auto;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

.nav-links a:hover {
    color: #fff;
    background: rgba(233, 69, 96, 0.2);
    text-decoration: none;
}

.nav-links a:active {
    background: rgba(233, 69, 96, 0.35);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 8px;
    transition: background 0.3s;
}

.mobile-menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== Hero 区域 ===== */
.hero-section {
    position: relative;
    overflow: hidden;
    min-height: 620px;
    background: linear-gradient(135deg, #0f3460, #1a1a2e, #16213e);
    animation: gradientShift 12s ease infinite alternate;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    display: none;
    position: relative;
    width: 100%;
    min-height: 620px;
    animation: fadeSlide 0.6s ease forwards;
}

.slide.active {
    display: block;
}

@keyframes fadeSlide {
    from { opacity: 0; transform: scale(1.02); }
    to { opacity: 1; transform: scale(1); }
}

.hero-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0.5;
    mix-blend-mode: overlay;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 8%;
    transform: translateY(-50%);
    color: #fff;
    z-index: 10;
    max-width: 560px;
    padding: 20px;
    backdrop-filter: blur(2px);
}

.hero-content h1,
.hero-content h2 {
    font-size: 3.2rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    margin-bottom: 16px;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.15rem;
    opacity: 0.92;
    margin-bottom: 28px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 14px;
    align-items: center;
    z-index: 20;
}

.slider-prev,
.slider-next {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.slider-prev:hover,
.slider-next:hover {
    background: rgba(233, 69, 96, 0.6);
    border-color: #e94560;
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: 8px;
}

.slider-dots button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}

.slider-dots button.active {
    background: #e94560;
    transform: scale(1.3);
}

/* ===== 关于我们 ===== */
.about-section {
    padding: 80px 0;
    background: #fff;
    transition: background 0.4s;
}

.dark-mode .about-section {
    background: #161b22;
}

.stats-grid {
    display: flex;
    justify-content: space-around;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 20px 30px;
    background: linear-gradient(135deg, rgba(233, 69, 96, 0.08), rgba(14, 165, 233, 0.08));
    border-radius: 16px;
    min-width: 160px;
    backdrop-filter: blur(4px);
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: translateY(-6px);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: #e94560;
    display: block;
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 1rem;
    color: #666;
}

.dark-mode .stat-label {
    color: #a0aec0;
}

/* ===== 品牌故事 & 企业文化 ===== */
.brand-story-section,
.corporate-culture-section {
    padding: 70px 0;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    transition: background 0.4s;
}

.dark-mode .brand-story-section,
.dark-mode .corporate-culture-section {
    background: linear-gradient(135deg, #0d1117, #161b22);
}

/* ===== 团队 ===== */
.team-section {
    padding: 80px 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.team-card {
    background: #fff;
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.dark-mode .team-card {
    background: #1c2333;
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.team-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 16px 48px rgba(233, 69, 96, 0.15);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 16px;
    object-fit: cover;
    border: 3px solid #e94560;
    transition: transform 0.4s;
}

.team-card:hover .team-avatar {
    transform: scale(1.08) rotate(-4deg);
}

.team-card h3 {
    margin-bottom: 6px;
    font-size: 1.3rem;
}

.team-card p {
    color: #777;
    font-size: 0.95rem;
}

.dark-mode .team-card p {
    color: #a0aec0;
}

/* ===== 产品服务 ===== */
.products-section {
    padding: 80px 0;
    background: #f4f4f9;
    transition: background 0.4s;
}

.dark-mode .products-section {
    background: #0d1117;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.dark-mode .product-card {
    background: #1c2333;
    border-color: rgba(255, 255, 255, 0.05);
}

.product-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 16px 48px rgba(233, 69, 96, 0.12);
}

.product-card img {
    width: 100%;
    border-radius: 14px;
    margin-bottom: 18px;
    transition: transform 0.5s;
}

.product-card:hover img {
    transform: scale(1.04);
}

.product-card h3 {
    margin-bottom: 10px;
}

.product-card p {
    color: #555;
    font-size: 0.95rem;
}

.dark-mode .product-card p {
    color: #a0aec0;
}

/* ===== 核心优势 ===== */
.advantages-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f3460, #1a1a2e);
    color: #fff;
    position: relative;
}

.advantages-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(233, 69, 96, 0.1), transparent 60%);
    pointer-events: none;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.advantage-card {
    text-align: center;
    padding: 36px 24px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.advantage-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(233, 69, 96, 0.4);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.advantage-card img {
    width: 80px;
    height: 80px;
    margin: 0 auto 18px;
    border-radius: 50%;
    transition: transform 0.4s;
}

.advantage-card:hover img {
    transform: rotate(8deg) scale(1.1);
}

.advantage-card h3 {
    color: #fff;
    margin-bottom: 10px;
}

.advantage-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

/* ===== 解决方案 & 服务行业 ===== */
.solutions-section,
.industries-section {
    padding: 70px 0;
}

/* ===== 数据统计 ===== */
.statistics-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f3460, #16213e);
    color: #fff;
}

.statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    padding: 36px 20px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.4s;
}

.stat-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(233, 69, 96, 0.3);
}

.stat-card .stat-number {
    font-size: 3rem;
    color: #e94560;
}

.stat-card span:last-child {
    display: block;
    margin-top: 6px;
    font-size: 1.05rem;
    opacity: 0.85;
}

/* ===== 成功案例 ===== */
.cases-section {
    padding: 80px 0;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.case-card {
    background: #fff;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.dark-mode .case-card {
    background: #1c2333;
    border-color: rgba(255, 255, 255, 0.05);
}

.case-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 16px 48px rgba(233, 69, 96, 0.1);
}

.case-card img {
    width: 100%;
    border-radius: 14px;
    margin-bottom: 18px;
    transition: transform 0.5s;
}

.case-card:hover img {
    transform: scale(1.03);
}

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

.case-card p {
    color: #555;
    font-size: 0.95rem;
}

.dark-mode .case-card p {
    color: #a0aec0;
}

/* ===== 合作伙伴 ===== */
.partners-section {
    padding: 70px 0;
    background: #f4f4f9;
    transition: background 0.4s;
}

.dark-mode .partners-section {
    background: #0d1117;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 24px;
    align-items: center;
}

.partners-grid img {
    width: 100%;
    border-radius: 12px;
    transition: all 0.4s;
    filter: grayscale(0.3);
}

.partners-grid img:hover {
    transform: scale(1.06);
    filter: grayscale(0);
    box-shadow: 0 8px 24px rgba(233, 69, 96, 0.15);
}

/* ===== 用户评价 ===== */
.testimonials-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #e94560, #0ea5e9);
    color: #fff;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

blockquote {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 28px 24px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: transform 0.4s;
}

blockquote:hover {
    transform: translateY(-6px);
}

blockquote p {
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: 12px;
}

blockquote cite {
    display: block;
    font-weight: 600;
    opacity: 0.85;
    font-style: normal;
}

/* ===== 最新动态 ===== */
.news-section {
    padding: 80px 0;
}

.news-article {
    margin-bottom: 30px;
    padding: 24px;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.05);
    transition: all 0.4s;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.dark-mode .news-article {
    background: #1c2333;
    border-color: rgba(255, 255, 255, 0.05);
}

.news-article:hover {
    transform: translateX(6px);
    box-shadow: 0 12px 36px rgba(233, 69, 96, 0.08);
}

.news-article h3 {
    margin-bottom: 8px;
}

.news-article time {
    display: inline-block;
    color: #888;
    font-size: 0.9rem;
    margin-top: 8px;
}

.dark-mode .news-article time {
    color: #a0aec0;
}

.latest-articles {
    margin-top: 36px;
    padding: 20px;
    background: rgba(233, 69, 96, 0.05);
    border-radius: 16px;
}

.dark-mode .latest-articles {
    background: rgba(233, 69, 96, 0.08);
}

.latest-articles ul {
    list-style: none;
    padding: 0;
}

.latest-articles li {
    margin-bottom: 8px;
}

.latest-articles a {
    font-weight: 500;
}

.article-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 36px;
    flex-wrap: wrap;
    gap: 12px;
}

.article-navigation a {
    padding: 10px 20px;
    background: rgba(14, 165, 233, 0.08);
    border-radius: 30px;
    transition: all 0.3s;
    font-weight: 500;
}

.article-navigation a:hover {
    background: rgba(233, 69, 96, 0.12);
    transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-section {
    padding: 80px 0;
    background: #f4f4f9;
    transition: background 0.4s;
}

.dark-mode .faq-section {
    background: #0d1117;
}

.faq-item {
    margin-bottom: 16px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.faq-question {
    background: #fff;
    border: none;
    width: 100%;
    text-align: left;
    padding: 18px 24px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
    color: #333;
}

.dark-mode .faq-question {
    background: #1c2333;
    color: #e0e6ed;
}

.faq-question:hover {
    background: #e94560;
    color: #fff;
}

.faq-icon {
    font-size: 1.4rem;
    font-weight: 300;
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding: 18px 24px;
    background: rgba(255, 255, 255, 0.5);
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    animation: slideDown 0.3s ease;
}

.dark-mode .faq-answer {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.06);
}

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

@keyframes slideDown {
    from { opacity: 0; max-height: 0; }
    to { opacity: 1; max-height: 300px; }
}

/* ===== 下载步骤 ===== */
.howto-section {
    padding: 70px 0;
}

.howto-section ol {
    padding-left: 24px;
    font-size: 1.05rem;
}

.howto-section li {
    margin-bottom: 12px;
    padding: 10px 16px;
    background: rgba(233, 69, 96, 0.05);
    border-radius: 10px;
    transition: transform 0.3s;
}

.howto-section li:hover {
    transform: translateX(8px);
    background: rgba(233, 69, 96, 0.1);
}

/* ===== 联系我们 ===== */
.contact-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f3460, #1a1a2e);
    color: #fff;
}

.contact-section a {
    color: #e94560;
    font-weight: 500;
}

.contact-section address {
    font-style: normal;
    line-height: 1.8;
}

.search-simulation {
    margin-top: 36px;
}

.search-simulation form {
    display: flex;
    gap: 12px;
    max-width: 500px;
}

.search-simulation input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s;
}

.search-simulation input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-simulation input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.18);
    border-color: #e94560;
}

.search-simulation button {
    padding: 14px 28px;
    background: #e94560;
    color: #fff;
    border: none;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.search-simulation button:hover {
    background: #c23152;
    transform: scale(1.04);
}

/* ===== 面包屑 ===== */
.breadcrumb-section {
    padding: 20px 0;
    background: #f4f4f9;
    transition: background 0.4s;
}

.dark-mode .breadcrumb-section {
    background: #0d1117;
}

.breadcrumb {
    list-style: none;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li::after {
    content: '›';
    margin-left: 8px;
    color: #999;
}

.breadcrumb li:last-child::after {
    content: '';
}

.breadcrumb a {
    color: #0ea5e9;
    font-weight: 500;
}

.breadcrumb li:last-child a {
    color: #e94560;
    pointer-events: none;
}

/* ===== 页脚 ===== */
footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.85);
    padding: 50px 0 30px;
    border-top: 2px solid rgba(233, 69, 96, 0.2);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 36px;
}

.footer-container h3 {
    color: #e94560;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.footer-container ul {
    list-style: none;
    padding: 0;
}

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

.footer-container a {
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s;
}

.footer-container a:hover {
    color: #e94560;
    padding-left: 4px;
}

.footer-info p {
    margin-bottom: 6px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== 回到顶部 ===== */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #e94560, #c23152);
    color: #fff;
    border: none;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 24px;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(233, 69, 96, 0.35);
    transition: all 0.4s;
    z-index: 999;
}

#back-to-top:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.5);
}

#back-to-top.show {
    display: flex;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    h1 { font-size: 2.4rem; }
    h2 { font-size: 1.8rem; }
    .hero-content { left: 5%; max-width: 80%; }
    .hero-content h1,
    .hero-content h2 { font-size: 2.2rem; }
    .stats-grid { gap: 20px; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        background: #1a1a2e;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        padding: 20px;
        gap: 4px;
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

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

    .nav-links a {
        padding: 12px 20px;
        border-radius: 8px;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-content {
        left: 4%;
        right: 4%;
        max-width: 92%;
        text-align: center;
    }

    .hero-content h1,
    .hero-content h2 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero-section {
        min-height: 480px;
    }

    .slide {
        min-height: 480px;
    }

    .stats-grid {
        flex-direction: column;
        align-items: center;
    }

    .stat-item {
        width: 100%;
        max-width: 260px;
    }

    .products-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
    }

    .search-simulation form {
        flex-direction: column;
    }

    .article-navigation {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }

    .hero-content h1,
    .hero-content h2 {
        font-size: 1.5rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 24px;
        font-size: 0.95rem;
    }

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

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .slider-prev,
    .slider-next {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    #back-to-top {
        width: 44px;
        height: 44px;
        font-size: 20px;
        bottom: 20px;
        right: 20px;
    }
}

/* ===== 滚动动画 (通用) ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 为 section 添加默认动画钩子（纯 CSS 备用） */
section {
    animation: sectionAppear 0.8s ease forwards;
    animation-timeline: view();
    animation-range: entry 0% cover 20%;
}

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

/* 暗色模式微调 */
.dark-mode .advantage-card p {
    color: rgba(255, 255, 255, 0.75);
}

.dark-mode .stat-label {
    color: #a0aec0;
}

.dark-mode .news-article time {
    color: #8892b0;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a1a2e;
}

::-webkit-scrollbar-thumb {
    background: #e94560;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #c23152;
}