* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Microsoft Yahei", "PingFang SC", sans-serif;
    color: #333;
    line-height: 1.7;
    background: #fff;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ========== 顶部导航 ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #fff;
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.site-logo a {
    font-size: 24px;
    font-weight: 800;
    color: #2c7a7b;
    letter-spacing: 2px;
    white-space: nowrap;
    text-shadow: 0 1px 2px rgba(44,122,123,0.1);
}
.site-nav ul {
    display: flex;
    gap: 4px;
}
.site-nav li a {
    display: block;
    padding: 8px 20px;
    font-size: 15px;
    color: #444;
    border-radius: 20px;
    transition: all 0.25s;
    white-space: nowrap;
}
.site-nav li a:hover,
.site-nav li.active a,
.site-nav li.current a {
    background: #e6f4f4;
    color: #2c7a7b;
}
.header-contact { flex-shrink: 0; }
.header-phone-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: #2c7a7b;
    color: #fff;
    border-radius: 50px;
    transition: all 0.25s;
}
.header-phone-btn:hover {
    background: #285e61;
    transform: translateY(-1px);
}
.phone-icon { font-size: 16px; }
.contact-info {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}
.contact-name { font-size: 13px; opacity: 0.9; }
.contact-num { font-size: 15px; font-weight: 700; }
.mobile-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: #2c7a7b;
    padding: 8px;
}

/* ========== Banner ========== */
.hero-banner {
    position: relative;
    background: linear-gradient(135deg, #2c7a7b 0%, #4fd1c5 100%);
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: 60px 20px 80px;
}
.hero-content {
    color: #fff;
    z-index: 2;
    max-width: 900px;
}
.hero-subtitle {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 16px;
    letter-spacing: 2px;
}
.hero-title {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.15);
}
.hero-tags {
    font-size: 16px;
    opacity: 0.95;
    letter-spacing: 1px;
}
.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 60px;
    background: #f7fafc;
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}

/* ========== 通用区块 ========== */
.section-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.section-label {
    font-size: 15px;
    color: #2c7a7b;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: center;
}
.section-divider {
    width: 50px;
    height: 3px;
    background: #2c7a7b;
    margin: 0 auto 16px;
    border-radius: 2px;
}
.section-divider.center { margin: 0 auto 20px; }

/* ========== 关于我们 ========== */
.about-section {
    background: #f7fafc;
    padding: 70px 0 80px;
    text-align: center;
}
.about-heading {
    font-size: 30px;
    color: #2d3748;
    margin-bottom: 12px;
    font-weight: 700;
    text-align: center;
}
.about-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 15px;
    color: #555;
    line-height: 2;
    text-align: left;
}
.about-text p { margin-bottom: 12px; }

/* ========== 主营业务 ========== */
.product-section {
    background: #fff;
    padding: 70px 0 80px;
}
.section-heading {
    font-size: 30px;
    color: #2d3748;
    font-weight: 700;
    margin-bottom: 12px;
    text-align: center;
}
.section-desc {
    font-size: 15px;
    color: #666;
    margin-bottom: 40px;
    text-align: center;
}
.product-grid {
    display: grid;
    gap: 28px;
}
.product-grid-pc6 {
    grid-template-columns: repeat(3, 1fr);
}
.product-card {
    background: #f0f2f5;
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.3s;
    text-align: center;
}
.product-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    transform: translateY(-4px);
}
.product-img {
    aspect-ratio: 8 / 5;
    background: #e8e8e8;
    overflow: hidden;
}
.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-info {
    padding: 24px 20px 30px;
}
.product-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
    text-align: center;
}
.product-info h3 a:hover { color: #2c7a7b; }
.product-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    display: none;
}
.product-more {
    display: inline-block;
    width: 44px;
    height: 44px;
    line-height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.8);
    color: #999;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.3s;
    border: 1px solid #ddd;
}
.product-more:hover {
    background: #2c7a7b;
    color: #fff;
    border-color: #2c7a7b;
}

/* ========== 新闻资讯 ========== */
.news-section {
    background: #f7fafc;
    padding: 70px 0 80px;
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.news-item {
    display: flex;
    gap: 20px;
    background: #fff;
    padding: 24px;
    border-radius: 10px;
    border: 1px solid #edf2f7;
    transition: all 0.3s;
}
.news-item:hover {
    box-shadow: 0 6px 20px rgba(44,122,123,0.08);
    transform: translateY(-2px);
}
.news-date {
    flex-shrink: 0;
    width: 64px;
    text-align: center;
    background: #2c7a7b;
    color: #fff;
    border-radius: 8px;
    padding: 12px 0;
    height: fit-content;
}
.news-day {
    display: block;
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
}
.news-month {
    display: block;
    font-size: 12px;
    opacity: 0.85;
    margin-top: 4px;
}
.news-body { flex: 1; min-width: 0; }
.news-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.news-body h3 a:hover { color: #2c7a7b; }
.news-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== CTA 联系我们 ========== */
.cta-section {
    background: linear-gradient(135deg, #2c7a7b 0%, #285e61 100%);
    padding: 70px 20px;
    text-align: center;
    color: #fff;
}
.cta-title {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 12px;
}
.cta-subtitle {
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: 32px;
    letter-spacing: 1px;
}
.cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 48px;
    background: transparent;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 50px;
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    transition: all 0.3s;
}
.cta-phone:hover {
    background: #fff;
    color: #2c7a7b;
    border-color: #fff;
}
.cta-phone-icon { font-size: 24px; }

/* ========== 友情链接 / 城市分站 ========== */
.friend-links {
    background: #f7fafc;
    padding: 45px 0;
}
.friend-links-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}
.friend-links-title {
    font-size: 15px;
    color: #666;
    font-weight: 600;
    margin-bottom: 20px;
}
.friend-links-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}
.friend-links-list a {
    display: inline-block;
    padding: 7px 18px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    font-size: 14px;
    color: #555;
    transition: all 0.25s;
}
.friend-links-list a:hover {
    background: #2c7a7b;
    color: #fff;
    border-color: #2c7a7b;
}

/* ========== 底部版权 ========== */
.site-footer {
    background: #285e61;
    color: rgba(255,255,255,0.75);
    text-align: center;
    padding: 24px 20px;
    font-size: 14px;
}

/* ========== 悬浮电话 ========== */
.float-call {
    position: fixed;
    right: 20px;
    bottom: 80px;
    width: 52px;
    height: 52px;
    background: #2c7a7b;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    box-shadow: 0 4px 16px rgba(44,122,123,0.35);
    z-index: 999;
    transition: transform 0.25s;
}
.float-call:hover { transform: scale(1.1); }

/* ========== 列表页 ========== */
.list-banner {
    background: linear-gradient(135deg, #2c7a7b 0%, #4fd1c5 100%);
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    font-weight: 700;
    padding: 40px 20px;
    text-align: center;
}
.list-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 24px;
}
.list-item {
    display: flex;
    gap: 28px;
    padding: 24px 0;
    border-bottom: 1px solid #edf2f7;
    transition: all 0.25s;
}
.list-item:hover { padding-left: 8px; }
.list-item-ico {
    width: 220px;
    height: 150px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    background: #f7fafc;
}
.list-item-ico img { width: 100%; height: 100%; object-fit: cover; }
.list-item-body { flex: 1; min-width: 0; }
.list-item-title {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2d3748;
}
.list-item-title a:hover { color: #2c7a7b; }
.list-item-desc {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 10px;
}
.list-item-date { color: #999; font-size: 13px; }
.pagination {
    text-align: center;
    margin-top: 40px;
}
.pagination a, .pagination span {
    display: inline-block;
    padding: 8px 16px;
    margin: 0 4px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    color: #555;
    font-size: 14px;
}
.pagination .current {
    background: #2c7a7b;
    color: #fff;
    border-color: #2c7a7b;
}

/* ========== 内容页 / 落地页 ========== */
.content-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 50px 24px;
}
.content-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 16px;
    color: #2d3748;
}
.content-meta {
    text-align: center;
    color: #999;
    font-size: 14px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #edf2f7;
}
.content-body {
    font-size: 16px;
    line-height: 1.9;
    color: #444;
}
.content-body img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }

/* 落地页专用 */
.landing-banner {
    background: linear-gradient(135deg, #2c7a7b 0%, #4fd1c5 100%);
    padding: 50px 24px;
    text-align: center;
    color: #fff;
}
.landing-banner h1 {
    font-size: 30px;
    margin-bottom: 10px;
    font-weight: 700;
}
.landing-banner p {
    font-size: 15px;
    opacity: 0.9;
}
.landing-container { padding: 45px 24px; }
.landing-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.9;
    color: #444;
}
.landing-content h1 {
    font-size: 30px;
    color: #2d3748;
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 2px solid #2c7a7b;
}
.landing-content h2 {
    font-size: 23px;
    color: #2c7a7b;
    margin: 36px 0 16px;
    padding-left: 14px;
    border-left: 4px solid #2c7a7b;
    font-weight: 700;
}
.landing-content h3 {
    font-size: 18px;
    color: #2d3748;
    margin: 22px 0 12px;
    font-weight: 600;
}
.landing-content p { margin-bottom: 14px; }
.landing-content ul, .landing-content ol {
    margin: 14px 0;
    padding-left: 26px;
}
.landing-content li { margin-bottom: 8px; }
.landing-content strong { color: #2d3748; }
.landing-cta {
    max-width: 900px;
    margin: 45px auto 0;
    padding: 38px 30px;
    text-align: center;
    background: linear-gradient(135deg, #2c7a7b 0%, #285e61 100%);
    border-radius: 12px;
    color: #fff;
}
.landing-cta h3 {
    font-size: 24px;
    margin-bottom: 8px;
}
.landing-cta p {
    font-size: 15px;
    opacity: 0.85;
    margin-bottom: 22px;
}
.cta-btn {
    display: inline-block;
    padding: 14px 38px;
    background: #fff;
    color: #2c7a7b;
    border-radius: 50px;
    font-size: 17px;
    font-weight: 700;
    transition: all 0.3s;
}
.cta-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* ========== 响应式适配 ========== */
@media (max-width: 1024px) {
    .header-inner { padding: 0 16px; gap: 12px; }
    .site-nav li a { padding: 8px 14px; font-size: 14px; }
    .contact-num { font-size: 14px; }
}

@media (max-width: 900px) {
    .product-grid-pc6 { grid-template-columns: repeat(2, 1fr); }
    .product-grid-pc6 .product-card:nth-child(n+5) { display: none; }
    .news-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    /* 导航 */
    .header-inner { height: 60px; padding: 0 16px; }
    .site-logo a { font-size: 20px; letter-spacing: 1px; }
    .site-nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 12px 16px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }
    .site-nav.active { display: block; }
    .site-nav ul {
        flex-direction: column;
        gap: 4px;
    }
    .site-nav li a {
        padding: 12px 16px;
        border-radius: 8px;
        font-size: 15px;
    }
    .header-contact { display: none; }
    .mobile-toggle { display: block; }

    /* Banner */
    .hero-banner { min-height: 300px; padding: 50px 20px 70px; }
    .hero-subtitle { font-size: 14px; letter-spacing: 1px; }
    .hero-title { font-size: 26px; letter-spacing: 1px; }
    .hero-tags { font-size: 14px; }

    /* 区块 */
    .about-section, .product-section, .news-section { padding: 50px 0; }
    .about-heading, .section-heading { font-size: 22px; }
    .section-inner { padding: 0 16px; }

    /* 产品卡片 */
    .product-grid { gap: 20px; }
    .product-info { padding: 16px 18px; }

    /* 新闻 */
    .news-item { padding: 18px; gap: 14px; }
    .news-date { width: 54px; padding: 10px 0; }
    .news-day { font-size: 20px; }
    .news-body h3 { font-size: 16px; }

    /* CTA */
    .cta-section { padding: 50px 20px; }
    .cta-title { font-size: 22px; }
    .cta-phone {
        font-size: 17px;
        padding: 12px 32px;
        gap: 8px;
    }
    .cta-phone-icon { font-size: 20px; }

    /* 列表页 */
    .list-banner { font-size: 22px; min-height: 140px; }
    .list-item { flex-direction: column; gap: 14px; }
    .list-item-ico { width: 100%; height: 180px; }

    /* 落地页 */
    .landing-banner { padding: 40px 16px; }
    .landing-banner h1 { font-size: 24px; }
    .landing-container { padding: 35px 16px; }
    .landing-content h1 { font-size: 24px; }
    .landing-content h2 { font-size: 20px; }
    .landing-content h3 { font-size: 17px; }
    .landing-cta { padding: 30px 20px; }
    .landing-cta h3 { font-size: 20px; }
    .cta-btn { padding: 12px 30px; font-size: 16px; }

    /* 悬浮按钮 */
    .float-call {
        width: 46px;
        height: 46px;
        font-size: 18px;
        right: 14px;
        bottom: 60px;
    }

    /* 友情链接 */
    .friend-links-list { gap: 8px; }
    .friend-links-list a { padding: 6px 14px; font-size: 13px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 22px; }
    .hero-subtitle { font-size: 13px; }
    .hero-tags { font-size: 13px; }
    .about-heading, .section-heading { font-size: 20px; }
    .cta-title { font-size: 20px; }
    .cta-phone { font-size: 15px; padding: 10px 24px; }
}