/* ===== 鍏ㄥ眬閲嶇疆涓庡熀纭€鏍峰紡 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a5276;
    --primary-light: #2980b9;
    --primary-dark: #0e2f44;
    --accent: #e67e22;
    --accent-light: #f39c12;
    --text: #333;
    --text-light: #666;
    --bg: #f8f9fa;
    --white: #fff;
    --border: #e0e0e0;
    --shadow: 0 2px 20px rgba(0,0,0,0.08);
    --radius: 8px;
}

html {
    scroll-behavior: smooth;
    min-height: 100%;
    height: 100%;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 0;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

ul { list-style: none; }

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

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

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    position: relative;
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 50px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 12px auto 0;
    border-radius: 2px;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #d35400;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(230,126,34,0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

/* ===== 椤堕儴閫氱煡鏍?===== */
.top-bar {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.85);
    font-size: 13px;
    padding: 8px 0;
}

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

.top-bar a {
    color: rgba(255,255,255,0.85);
    margin-left: 20px;
}

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

/* ===== 瀵艰埅鏍?===== */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    font-weight: 700;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.logo-text span {
    color: var(--accent);
}

.nav {
    display: flex;
    gap: 8px;
}

.nav a {
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    position: relative;
}

.nav a:hover,
.nav a.active {
    color: var(--primary-light);
    background: rgba(41,128,185,0.06);
}

.nav a.active {
    color: var(--primary);
    font-weight: 600;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 26px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    transition: 0.3s;
}

/* ===== Hero 鍖哄煙 ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: var(--white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-content h1 span {
    color: var(--accent);
}

.hero-content p {
    font-size: 17px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-placeholder {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    font-size: 80px;
    backdrop-filter: blur(10px);
}

.hero-image-placeholder span {
    font-size: 16px;
    margin-top: 16px;
    opacity: 0.6;
}

/* ===== 鐗硅壊/浼樺娍鍖哄煙 ===== */
.features {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: var(--radius);
    transition: all 0.3s;
    border: 1px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white);
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--primary);
}

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

/* ===== 浜у搧棰勮鍖哄煙 ===== */
.products-preview {
    background: var(--bg);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.product-image {
    height: 240px;
    background: linear-gradient(135deg, #e8f0fe, #d4e6f1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: var(--primary-light);
    position: relative;
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--accent);
    color: var(--white);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--primary);
}

.product-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 12px;
}

.product-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.product-price small {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-light);
}

.text-center {
    text-align: center;
    margin-top: 40px;
}

/* ===== 鍏充簬鎴戜滑锛堥椤垫憳瑕侊級 ===== */
.about-summary {
    background: var(--white);
}

.about-summary .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #e8f0fe, #d4e6f1);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 72px;
    color: var(--primary-light);
}

.about-image-placeholder span {
    font-size: 15px;
    margin-top: 12px;
    color: var(--text-light);
}

.about-text h2 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-text p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ===== 鏂伴椈鍖哄煙 ===== */
.news-section {
    background: var(--bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, #fef9e7, #fdebd0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: var(--accent);
}

.news-content {
    padding: 20px;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.news-content h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--primary);
    line-height: 1.4;
}

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

.news-content a {
    display: inline-block;
    margin-top: 12px;
    color: var(--primary-light);
    font-weight: 600;
    font-size: 14px;
}

.news-content a:hover { color: var(--accent); }

/* ===== 椤佃剼 ===== */
.footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.8);
    padding: 60px 0 0;
}

.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-about h3 {
    font-size: 20px;
    color: var(--white);
    margin-bottom: 16px;
}

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

.footer-title {
    font-size: 17px;
    color: var(--white);
    margin-bottom: 20px;
    font-weight: 600;
}

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

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

.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.footer-contact .icon {
    font-size: 16px;
    flex-shrink: 0;
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
    color: rgba(255,255,255,0.5);
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
    color: var(--accent);
}

/* ===== 闈㈠寘灞戝鑸?===== */
.breadcrumb {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    padding: 50px 0;
    text-align: center;
}

.breadcrumb h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
}

.breadcrumb p {
    font-size: 15px;
    opacity: 0.85;
}

.breadcrumb-nav {
    margin-top: 12px;
    font-size: 14px;
    opacity: 0.7;
}

.breadcrumb-nav a {
    color: var(--white);
}

.breadcrumb-nav a:hover {
    color: var(--accent);
}

.breadcrumb-nav span {
    margin: 0 8px;
}

/* ===== 鍏充簬椤甸潰 ===== */
.about-intro {
    background: var(--white);
}

.about-intro .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-intro-image {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #e8f0fe, #d4e6f1);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 72px;
    color: var(--primary-light);
}

.timeline {
    background: var(--bg);
}

.timeline-list {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline-list::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-light);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    padding-bottom: 36px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -29px;
    top: 4px;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.timeline-year {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 6px;
}

.timeline-text {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 浜у搧椤甸潰 ===== */
.product-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 24px;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: var(--white);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    color: var(--text);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ===== 鑱旂郴鎴戜滑椤甸潰 ===== */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact-info-card h3 {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 6px;
}

.contact-info-card > p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--white);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 15px;
    margin-bottom: 4px;
    color: var(--primary);
}

.contact-item p {
    font-size: 14px;
    color: var(--text-light);
}

.contact-form-wrap {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact-form-wrap h3 {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 6px;
}

.contact-form-wrap > p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
    background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    background: var(--white);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

/* ===== 鏂伴椈璇︽儏椤甸潰 ===== */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

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

.news-detail .content p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text);
    margin-bottom: 16px;
}

/* ===== 鍦板浘瀹瑰櫒 ===== */
.map-container {
    margin-top: 40px;
    border-radius: var(--radius);
    overflow: hidden;
    height: 350px;
    background: #e8e8e8;
}

/* ===== 鍝嶅簲寮忚璁?===== */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content h1 { font-size: 34px; }
    .hero-buttons { justify-content: center; }
    .hero-image { display: none; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-summary .container { grid-template-columns: 1fr; }
    .about-intro .container { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    .nav.show { display: flex; }
    .features-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 50px 0; }
    .section-title { font-size: 26px; }
    .hero { padding: 60px 0; }
    .hero-content h1 { font-size: 28px; }
    .about-stats { grid-template-columns: repeat(3, 1fr); }
    .stat-number { font-size: 28px; }
    .top-bar .container { flex-direction: column; gap: 6px; }
    .nav { top: 56px; }
    .top-bar .contact-info { display: flex; gap: 16px; }
    .top-bar .contact-info a { margin-left: 0; }
}

/* ===== 鍔ㄧ敾 ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate {
    animation: fadeInUp 0.6s ease forwards;
}