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

body {
    font-family: 'Inter', sans-serif;
    background-color: #ffffff;
    color: #1a2c2f;
    line-height: 1.5;
    scroll-behavior: smooth;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航区 */
.header {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 20, 30, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #e2ecf0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1rem;
    flex-wrap: wrap;
}
.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0f5c7a 0%, #1a97b8 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    letter-spacing: -0.3px;
}
.logo span {
    font-weight: 600;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    color: #1a8bb0;
}
.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}
.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: #1f5a6e;
    transition: color 0.2s;
    font-size: 0.98rem;
}
.nav-links a:hover {
    color: #0f7f9e;
}
.phone-header {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #e3f1f5;
    padding: 8px 18px;
    border-radius: 40px;
    color: #0f6b85;
    font-weight: 700;
    font-size: 0.9rem;
    transition: 0.2s;
}
.phone-header i {
    font-size: 1rem;
}
.phone-header:hover {
    background: #d2e8ef;
}

/* Banner 高精科技风格 */
.hero {
    background: linear-gradient(125deg, #f0f9fe 0%, #e2f0f5 100%);
    padding: 4rem 0 5rem;
    position: relative;
    overflow: hidden;
}
.hero:before {
    content: "";
    position: absolute;
    top: -15%;
    right: -8%;
    width: 580px;
    height: 580px;
    background: radial-gradient(circle, rgba(28,145,175,0.08) 0%, rgba(28,145,175,0) 70%);
    border-radius: 50%;
    z-index: 0;
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}
.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    background: linear-gradient(130deg, #14627e, #249bbf);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}
.hero .dynamic-text {
    font-size: 1.55rem;
    font-weight: 600;
    color: #207f9c;
    margin: 1rem 0 1.2rem;
    min-height: 3rem;
}
.hero .dynamic-text span {
    display: inline-block;
    animation: pulseText 0.9s ease forwards;
}
@keyframes pulseText {
    0% { opacity: 0; transform: translateY(8px);}
    100% { opacity: 1; transform: translateY(0);}
}
.hero p {
    font-size: 1.05rem;
    color: #2f6c81;
    max-width: 780px;
    margin: 0 auto;
    line-height: 1.5;
}
.hero-badge {
    background: rgba(32,128,156,0.12);
    display: inline-block;
    padding: 6px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.8rem;
    color: #1d7e9b;
    margin-bottom: 1.2rem;
}
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero .dynamic-text { font-size: 1.2rem; }
}

.section {
    padding: 4rem 0;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    color: #1a748f;
    position: relative;
}
.section-title:after {
    content: '';
    display: block;
    width: 70px;
    height: 4px;
    background: #30b0d0;
    margin: 0.8rem auto 0;
    border-radius: 4px;
}

/* 公司介绍 */
.about-grid {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
    flex-wrap: wrap;
}
.about-text {
    flex: 1;
    min-width: 260px;
}
.about-text p {
    margin-bottom: 1rem;
    line-height: 1.85;
    color: #2d5a6b;
}
.stats-badge {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.2rem 0;
}
.stat-item {
    background: #eaf4f8;
    padding: 0.4rem 1.2rem;
    border-radius: 32px;
    font-weight: 600;
    color: #1f7c97;
    font-size: 0.85rem;
}
.about-img {
    flex: 0 0 600px;
    max-width: 100%;
}
.about-img img {
    width: 100%;
    height: auto;
    border-radius: 32px;
    box-shadow: 0 20px 32px -10px rgba(0,0,0,0.1);
    object-fit: cover;
}
@media (max-width: 1024px) {
    .about-img { flex-basis: 100%; }
    .about-grid { flex-direction: column; }
}

/* 产品标签导航 */
.product-tab-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}
.tab-btn {
    background: transparent;
    border: 1px solid #cae2ea;
    padding: 0.6rem 1.8rem;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    color: #1f7f9b;
}
.tab-btn.active, .tab-btn:hover {
    background: #249bbf;
    border-color: #249bbf;
    color: white;
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 2rem;
}
.product-card {
    background: #ffffff;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 12px 24px -12px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    border: 1px solid #e3f0f4;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 36px -12px rgba(0,0,0,0.12);
}
.product-img {
    aspect-ratio: 1 / 1;
    width: 100%;
    object-fit: cover;
    display: block;
}
.product-info {
    padding: 1rem 1rem 1.2rem;
    text-align: center;
}
.product-info h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #1f6f89;
}
.product-tab-pane {
    display: none;
    animation: fadePane 0.3s ease;
}
.product-tab-pane.active-pane {
    display: block;
}
@keyframes fadePane {
    from { opacity: 0; transform: translateY(8px);}
    to { opacity: 1; transform: translateY(0);}
}

/* 优势板块 */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.adv-card {
    background: #fbfefe;
    border-radius: 28px;
    padding: 2rem 1.3rem;
    border: 1px solid #e2f0f4;
    transition: 0.2s;
}
.adv-card i {
    font-size: 2.4rem;
    color: #249bbf;
    margin-bottom: 1rem;
}
.adv-card h4 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    color: #1c7d9b;
}
.adv-card p {
    color: #426d7c;
    line-height: 1.45;
}

.data-empty{
    padding:42px;
    border:1px dashed #d5e1ee;
    border-radius:14px;
    text-align:center;
    color:var(--geo-muted);
    background:#fff
}

.footer {
    background: #0b4457;
    color: #def0f5;
    padding: 2.5rem 0 1rem;
    margin-top: 1rem;
}
.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.footer-info {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer-contact p {
    margin: 4px 0;
}
.friend-links{
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.friend-links a {
    color: #bde2ec;
    text-decoration: none;
    margin-right: 1.8rem;
    font-size: 0.85rem;
    transition: 0.2s;
}
.friend-links a:hover {
    color: white;
}
.copyright {
    text-align: center;
    font-size: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid #357b8c;
    margin-top: 0.5rem;
}

.mobile-call {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #249bbf;
    width: 56px;
    height: 56px;
    border-radius: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 22px rgba(0,0,0,0.2);
    z-index: 999;
    transition: transform 0.2s;
}
.mobile-call a {
    color: white;
    font-size: 1.8rem;
}
.mobile-call:hover {
    transform: scale(1.05);
}
@media (min-width: 769px) {
    .mobile-call { display: none; }
}
.contact-phone-inline {
    background: #e2f0f5;
    display: inline-block;
    padding: 0.2rem 1rem;
    border-radius: 30px;
    font-weight: 700;
    color: #1c7d9b;
}