:root {
    --color-primary: #163a5f;
    --color-secondary: #1d566e;
    --color-accent: #21aba5;
    --color-highlight: #45eba5;
    --color-white: #ffffff;
    --color-light-gray: #f5f7fa;
    --color-medium-gray: #e8ecf1;
    --color-dark-gray: #333333;
    --color-text: #444444;
    --color-text-light: #6b7280;
    --shadow-sm: 0 2px 8px rgba(22, 58, 95, 0.08);
    --shadow-md: 0 4px 20px rgba(22, 58, 95, 0.12);
    --shadow-lg: 0 8px 40px rgba(22, 58, 95, 0.16);
    --shadow-xl: 0 16px 56px rgba(22, 58, 95, 0.2);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Hiragino Sans GB', 'Segoe UI', sans-serif;
    --max-width: 1260px;
    --nav-height: 72px;
    --nav-height-mobile: 60px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    letter-spacing: 0.02em;
}

/* ========== 顶部导航栏 100%宽度 ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--color-primary);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-normal);
    height: var(--nav-height);
}

.site-header.scrolled {
    box-shadow: 0 4px 28px rgba(0, 0, 0, 0.22);
}

.header-inner {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-highlight));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: var(--color-white);
    letter-spacing: 0;
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.logo-area:hover .logo-icon {
    transform: rotate(-10deg) scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text .brand-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.logo-text .brand-sub {
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

/* 桌面端导航 */
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.main-nav li {
    position: relative;
}

.main-nav a {
    display: block;
    padding: 10px 18px;
    color: rgba(255, 255, 255, 0.88);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    border-radius: 25px;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background-color: var(--color-highlight);
    border-radius: 2px;
    transition: transform var(--transition-fast);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    flex-direction: column;
    gap: 5px;
    width: 36px;
    height: 30px;
    justify-content: center;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2.5px;
    background-color: var(--color-white);
    border-radius: 3px;
    transition: all var(--transition-fast);
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}
.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ========== Hero区域 ========== */
.hero-section {
    position: relative;
    margin-top: var(--nav-height);
    background: linear-gradient(160deg, #0f2d4a 0%, var(--color-primary) 30%, var(--color-secondary) 60%, #1a4a5e 100%);
    min-height: 560px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -180px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(69, 235, 165, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(33, 171, 165, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 50px 28px;
    display: flex;
    align-items: center;
    gap: 50px;
    position: relative;
    z-index: 2;
}

.hero-content {
    flex: 1;
    min-width: 0;
}

.hero-badge {
    display: inline-block;
    background-color: rgba(69, 235, 165, 0.15);
    color: var(--color-highlight);
    padding: 8px 18px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
    border: 1px solid rgba(69, 235, 165, 0.25);
}

.hero-content h1 {
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: 0.04em;
}

.hero-content h1 .highlight {
    color: var(--color-highlight);
    position: relative;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.6;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-cta-group {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-decoration: none;
    border-radius: 30px;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    font-family: var(--font-family);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), #1a9a94);
    color: var(--color-white);
    box-shadow: 0 6px 22px rgba(33, 171, 165, 0.35);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(33, 171, 165, 0.45);
    background: linear-gradient(135deg, #28b8b2, var(--color-accent));
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.4);
}
.btn-outline:hover {
    border-color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.btn-sm {
    padding: 9px 20px;
    font-size: 0.85rem;
    border-radius: 22px;
}

.hero-visual {
    flex: 0 0 420px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-visual img {
    width: 100%;
    height: auto;
    max-width: 420px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-slow);
}

.hero-visual img:hover {
    transform: scale(1.03);
}

/* 波浪分隔 */
.wave-divider {
    position: relative;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    background-color: var(--color-light-gray);
}
.wave-divider svg {
    display: block;
    width: 100%;
    height: 60px;
}

/* ========== 通用板块样式 ========== */
.section {
    padding: 70px 28px;
}
.section-light {
    background-color: var(--color-white);
}
.section-gray {
    background-color: var(--color-light-gray);
}
.section-accent {
    background: linear-gradient(170deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}
.section-header .section-tag {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 10px;
}
.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
    letter-spacing: 0.03em;
}
.section-header .section-desc {
    color: var(--color-text-light);
    font-size: 0.95rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}
.section-accent .section-header h2 {
    color: var(--color-white);
}
.section-accent .section-header .section-desc {
    color: rgba(255, 255, 255, 0.7);
}
.section-accent .section-header .section-tag {
    color: var(--color-highlight);
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

/* ========== 企业简介板块 ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-slow);
}
.about-image-wrapper:hover img {
    transform: scale(1.04);
}
.about-image-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(to top, rgba(22, 58, 95, 0.5), transparent);
    pointer-events: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.about-content h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 18px;
    letter-spacing: 0.03em;
}
.about-content .about-lead {
    font-size: 1.05rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 14px;
    letter-spacing: 0.03em;
}
.about-content p {
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.75;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}
.stat-card {
    background: var(--color-light-gray);
    padding: 18px 16px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}
.stat-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    background: var(--color-white);
}
.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.02em;
    line-height: 1.2;
}
.stat-label {
    font-size: 0.82rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* ========== 产品介绍板块 ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-medium-gray);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}
.product-card-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: #eef2f7;
    position: relative;
}
.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}
.product-card:hover .product-card-image img {
    transform: scale(1.08);
}
.product-card-body {
    padding: 20px 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.product-card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
    letter-spacing: 0.03em;
}
.product-card-body p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 14px;
}
.product-card-body .btn-sm {
    align-self: flex-start;
}
.product-tag {
    display: inline-block;
    font-size: 0.72rem;
    background-color: rgba(33, 171, 165, 0.1);
    color: var(--color-accent);
    padding: 4px 10px;
    border-radius: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}

/* ========== Brand品牌板块 ========== */
.brand-showcase {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.brand-stat-item {
    padding: 28px 16px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: all var(--transition-normal);
    backdrop-filter: blur(2px);
}
.brand-stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}
.brand-stat-icon {
    font-size: 2.6rem;
    margin-bottom: 10px;
    display: block;
    color: var(--color-highlight);
    font-weight: 700;
}
.brand-stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.03em;
    line-height: 1.2;
}
.brand-stat-label {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 6px;
    letter-spacing: 0.04em;
}
.brand-certificates {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 36px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.cert-badge {
    background: rgba(255, 255, 255, 0.08);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.04em;
    border: 1px solid rgba(255, 255, 255, 0.18);
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.cert-badge:hover {
    background: rgba(69, 235, 165, 0.15);
    border-color: var(--color-highlight);
    color: var(--color-highlight);
}

/* ========== 新闻资讯板块 ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-medium-gray);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}
.news-card-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: #eef2f7;
}
.news-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}
.news-card:hover .news-card-image img {
    transform: scale(1.06);
}
.news-card-body {
    padding: 18px 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-date {
    font-size: 0.78rem;
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
}
.news-card-body h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
    line-height: 1.45;
    letter-spacing: 0.02em;
}
.news-card-body p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.55;
    flex: 1;
}
.news-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    margin-top: 10px;
    transition: gap var(--transition-fast);
    letter-spacing: 0.03em;
}
.news-link:hover {
    gap: 8px;
    color: #18918b;
}
.news-link .arrow {
    font-size: 1.1rem;
    line-height: 1;
}

/* ========== 公司地址板块 ========== */
.address-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: stretch;
}
.address-map-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    min-height: 320px;
    background-color: #e8ecf1;
    position: relative;
}
.address-map-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    min-height: 320px;
}
.address-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}
.address-info h2 {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.03em;
}
.address-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: var(--color-light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    border-left: 3px solid transparent;
}
.address-item:hover {
    border-left-color: var(--color-accent);
    background: #eef7f6;
    box-shadow: var(--shadow-sm);
}
.address-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-highlight));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-white);
    font-weight: 700;
}
.address-text strong {
    display: block;
    font-size: 0.9rem;
    color: var(--color-primary);
    letter-spacing: 0.03em;
    margin-bottom: 2px;
}
.address-text span {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* ========== 联系我们板块 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.contact-form-wrapper {
    background: var(--color-white);
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-medium-gray);
}
.contact-form-wrapper h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
    letter-spacing: 0.03em;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--color-primary);
    margin-bottom: 6px;
    letter-spacing: 0.03em;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-medium-gray);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: var(--font-family);
    transition: all var(--transition-fast);
    background: var(--color-light-gray);
    color: var(--color-text);
    letter-spacing: 0.02em;
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(33, 171, 165, 0.1);
    background: var(--color-white);
}
.form-group textarea {
    min-height: 110px;
}
.contact-detail-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.contact-detail-card {
    padding: 20px;
    background: var(--color-light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    border-left: 3px solid transparent;
}
.contact-detail-card:hover {
    border-left-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
    background: #eef7f6;
}
.contact-detail-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
    letter-spacing: 0.03em;
}
.contact-detail-card p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* ========== 页脚 100%宽度 ========== */
.site-footer {
    width: 100%;
    background-color: #0f2d4a;
    color: rgba(255, 255, 255, 0.75);
}
.footer-main {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 50px 28px 30px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 36px;
}
.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
    letter-spacing: 0.04em;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--color-highlight);
    border-radius: 2px;
}
.footer-col p {
    font-size: 0.84rem;
    line-height: 1.7;
    margin-bottom: 8px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 8px;
}
.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.84rem;
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}
.footer-col ul li a:hover {
    color: var(--color-highlight);
    padding-left: 4px;
}
.footer-bottom {
    width: 100%;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 18px 28px;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.03em;
}
.footer-bottom a {
    color: var(--color-highlight);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}
.footer-bottom a:hover {
    color: #5ff0b5;
    text-decoration: underline;
}
.footer-mobile-link {
    display: inline-block;
    margin-top: 8px;
    padding: 8px 16px;
    background: rgba(69, 235, 165, 0.12);
    border-radius: 20px;
    color: var(--color-highlight);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    transition: all var(--transition-fast);
    border: 1px solid rgba(69, 235, 165, 0.3);
}
.footer-mobile-link:hover {
    background: rgba(69, 235, 165, 0.2);
    border-color: var(--color-highlight);
    color: #5ff0b5;
}

/* ========== 移动端响应式 ========== */
@media (max-width: 1024px) {
    .hero-inner {
        flex-direction: column;
        text-align: center;
        gap: 30px;
        padding: 40px 20px;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .hero-subtitle {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-cta-group {
        justify-content: center;
    }
    .hero-visual {
        flex: 0 0 auto;
        max-width: 320px;
        margin: 0 auto;
    }
    .hero-visual img {
        max-width: 100%;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .brand-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    .address-grid {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: var(--nav-height-mobile);
    }
    html {
        scroll-padding-top: var(--nav-height-mobile);
    }
    .header-inner {
        padding: 0 16px;
    }
    .logo-text .brand-name {
        font-size: 0.9rem;
    }
    .logo-text .brand-sub {
        font-size: 0.6rem;
    }
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    /* 移动端导航 */
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 340px;
        height: 100vh;
        background: var(--color-primary);
        flex-direction: column;
        padding: 80px 20px 30px;
        gap: 4px;
        transition: right var(--transition-normal);
        box-shadow: -8px 0 30px rgba(0, 0, 0, 0.3);
        z-index: 999;
        overflow-y: auto;
    }
    .main-nav.open {
        right: 0;
    }
    .main-nav a {
        font-size: 1rem;
        padding: 14px 16px;
        border-radius: var(--radius-sm);
        width: 100%;
    }
    .mobile-menu-toggle {
        display: flex;
    }
    .mobile-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }
    .mobile-overlay.active {
        display: block;
    }

    .hero-section {
        min-height: 420px;
    }
    .hero-content h1 {
        font-size: 1.55rem;
    }
    .hero-subtitle {
        font-size: 0.9rem;
    }
    .hero-visual {
        max-width: 240px;
    }
    .btn {
        padding: 11px 22px;
        font-size: 0.85rem;
    }
    .section {
        padding: 45px 16px;
    }
    .section-header h2 {
        font-size: 1.5rem;
    }
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    .stat-card {
        padding: 12px 8px;
    }
    .stat-number {
        font-size: 1.3rem;
    }
    .stat-label {
        font-size: 0.7rem;
    }
    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .news-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .brand-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .brand-stat-number {
        font-size: 1.6rem;
    }
    .brand-stat-icon {
        font-size: 2rem;
    }
    .footer-main {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 35px 16px 20px;
    }
    .address-grid {
        gap: 20px;
    }
    .contact-form-wrapper {
        padding: 20px 16px;
    }
    .address-map-wrapper {
        min-height: 220px;
    }
    .address-map-wrapper img {
        min-height: 220px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.3rem;
    }
    .hero-subtitle {
        font-size: 0.8rem;
    }
    .hero-cta-group {
        flex-direction: column;
        align-items: center;
    }
    .hero-visual {
        max-width: 180px;
    }
    .products-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .brand-showcase {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .brand-stat-item {
        padding: 16px 10px;
    }
    .brand-stat-number {
        font-size: 1.3rem;
    }
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 5px;
    }
    .stat-number {
        font-size: 1.1rem;
    }
    .stat-label {
        font-size: 0.65rem;
    }
    .section {
        padding: 35px 12px;
    }
    .section-header h2 {
        font-size: 1.3rem;
    }
    .brand-certificates {
        gap: 8px;
    }
    .cert-badge {
        padding: 7px 14px;
        font-size: 0.72rem;
    }
}