:root {
    --gold: #f1c40f;
    --dark: #34495e;
    --light: #ecf0f1;
    --blue: #3498db;
    --dark-hover: #2c3e50;
    --gold-dark: #d4a90a;
    --blue-hover: #2980b9;
    --white: #ffffff;
    --text-dark: #2c3e50;
    --text-gray: #5a6c7d;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);
    --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.14);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.18);
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: #f8f9fa;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============ 顶部信息栏 ============ */
.top-bar {
    background-color: var(--dark);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.82rem;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    z-index: 1001;
    position: relative;
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.top-bar .contact-info {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.top-bar .contact-info span {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    transition: color var(--transition-fast);
}
.top-bar .contact-info span i {
    color: var(--gold);
    font-size: 0.75rem;
}
.top-bar .contact-info span:hover {
    color: #fff;
}
.top-bar .tag-line {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}
.top-bar .badge-mini {
    display: inline-block;
    background: rgba(241, 196, 15, 0.15);
    color: var(--gold);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    border: 1px solid rgba(241, 196, 15, 0.25);
    white-space: nowrap;
}

/* ============ 主导航 ============ */
.main-nav {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.main-nav.scrolled {
    box-shadow: var(--shadow-md);
}
.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 10px;
    padding-bottom: 10px;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}
.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--dark) 0%, #3d5a6e 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}
.logo-icon::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--gold);
    border-radius: 50%;
    top: 6px;
    right: 6px;
    opacity: 0.9;
}
.logo-icon::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--blue);
    border-radius: 50%;
    bottom: 8px;
    left: 10px;
    opacity: 0.85;
}
.logo-icon i {
    color: #fff;
    font-size: 1.4rem;
    z-index: 1;
    position: relative;
}
.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}
.logo-text .company-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark);
    letter-spacing: 0.5px;
}
.logo-text .company-sub {
    font-size: 0.7rem;
    color: var(--text-gray);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.nav-links {
    display: flex;
    list-style: none;
    gap: 4px;
    align-items: center;
}
.nav-links li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 16px;
    border-radius: 25px;
    transition: all var(--transition-fast);
    white-space: nowrap;
    letter-spacing: 0.3px;
    position: relative;
}
.nav-links li a:hover,
.nav-links li a.active {
    color: var(--dark);
    background: rgba(52, 73, 94, 0.06);
}
.nav-links li a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--gold);
    border-radius: 3px;
}
.nav-cta {
    background: var(--gold) !important;
    color: var(--dark) !important;
    font-weight: 600 !important;
    padding: 9px 20px !important;
    border-radius: 25px !important;
    transition: all var(--transition-fast) !important;
    box-shadow: 0 2px 8px rgba(241, 196, 15, 0.3);
}
.nav-cta:hover {
    background: var(--gold-dark) !important;
    color: #1a1a1a !important;
    box-shadow: 0 4px 16px rgba(241, 196, 15, 0.45) !important;
    transform: translateY(-1px);
}
.nav-cta::after {
    display: none !important;
}
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    z-index: 1002;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}
.hamburger:hover {
    background: rgba(0, 0, 0, 0.03);
}
.hamburger span {
    width: 26px;
    height: 2.5px;
    background: var(--dark);
    border-radius: 3px;
    transition: all var(--transition);
}
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============ 容器 ============ */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ 区块标题 ============ */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header .section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--blue);
    background: rgba(52, 152, 219, 0.08);
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 12px;
}
.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: 0.5px;
    line-height: 1.3;
}
.section-header h2 span {
    color: var(--gold);
    position: relative;
}
.section-header .section-desc {
    color: var(--text-gray);
    font-size: 1rem;
    margin-top: 10px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.section-header .divider {
    width: 50px;
    height: 4px;
    background: linear-gradient(90deg, var(--gold), var(--blue));
    border-radius: 4px;
    margin: 14px auto 0;
}

/* ============ 英雄区域 ============ */
.hero {
    background: var(--dark);
    position: relative;
    overflow: hidden;
    min-height: 560px;
    display: flex;
    align-items: center;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 25% 20%, rgba(241, 196, 15, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 60%, rgba(52, 152, 219, 0.10) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 80%, rgba(241, 196, 15, 0.04) 0%, transparent 50%);
    z-index: 0;
}
.hero .geometric-pattern {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.04;
    background-image:
        repeating-linear-gradient(45deg, #fff 0px, #fff 1px, transparent 1px, transparent 30px),
        repeating-linear-gradient(-45deg, #fff 0px, #fff 1px, transparent 1px, transparent 30px);
    pointer-events: none;
}
.hero .hero-grid-lines {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.03;
    background:
        linear-gradient(90deg, #fff 1px, transparent 1px),
        linear-gradient(180deg, #fff 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
}
.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding-top: 50px;
    padding-bottom: 50px;
}
.hero-content {
    color: #fff;
}
.hero-content .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(241, 196, 15, 0.15);
    border: 1px solid rgba(241, 196, 15, 0.3);
    color: var(--gold);
    padding: 7px 16px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}
.hero-content .hero-badge i {
    font-size: 0.7rem;
    animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}
.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.hero-content h1 .highlight {
    color: var(--gold);
    position: relative;
}
.hero-content .hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 28px;
    line-height: 1.6;
    max-width: 480px;
}
.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 28px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    letter-spacing: 0.4px;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    font-family: var(--font-body);
}
.btn-primary {
    background: var(--gold);
    color: var(--dark);
    box-shadow: 0 4px 16px rgba(241, 196, 15, 0.35);
}
.btn-primary:hover {
    background: #e6b80e;
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(241, 196, 15, 0.5);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.4);
}
.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-2px);
}
.btn-white {
    background: #fff;
    color: var(--dark);
    box-shadow: var(--shadow-sm);
}
.btn-white:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.hero-card-stack {
    position: relative;
    width: 100%;
    max-width: 420px;
}
.hero-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    color: #fff;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-lg);
}
.hero-card .card-icon-big {
    width: 56px;
    height: 56px;
    background: rgba(241, 196, 15, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 1.5rem;
    color: var(--gold);
}
.hero-card h3 {
    font-size: 1.3rem;
    margin-bottom: 6px;
    font-weight: 600;
}
.hero-card p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}
.hero-card-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 140px;
    height: 140px;
    background: rgba(241, 196, 15, 0.08);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}
.hero-card-accent2 {
    position: absolute;
    top: -30px;
    left: -30px;
    width: 100px;
    height: 100px;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}
.hero-stats-row {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}
.hero-stat-mini {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.08);
    flex: 1;
    min-width: 80px;
}
.hero-stat-mini .stat-num {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}
.hero-stat-mini .stat-label {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

/* ============ 关于我们 ============ */
.about-section {
    padding: 80px 0;
    background: var(--white);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.about-image-area {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--light);
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.about-image-placeholder {
    width: 100%;
    height: 100%;
    min-height: 380px;
    background: linear-gradient(135deg, #e8ecf1 0%, #dce3e8 40%, #ecf0f1 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.about-image-placeholder .factory-icon-large {
    font-size: 8rem;
    color: rgba(52, 73, 94, 0.15);
    z-index: 1;
}
.about-image-placeholder::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(to top, rgba(52, 73, 94, 0.06) 0%, transparent 100%);
    z-index: 0;
}
.about-image-badge {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow-md);
    z-index: 2;
    text-align: center;
    border-left: 4px solid var(--gold);
}
.about-image-badge .badge-num {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1;
}
.about-image-badge .badge-txt {
    font-size: 0.75rem;
    color: var(--text-gray);
    margin-top: 2px;
}
.about-content h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--dark);
    margin-bottom: 14px;
    font-weight: 700;
    line-height: 1.3;
}
.about-content .highlight-text {
    color: var(--blue);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 12px;
    letter-spacing: 0.3px;
}
.about-content p {
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 1.7;
    font-size: 0.95rem;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 20px;
}
.about-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
}
.about-feature-item i {
    color: var(--gold);
    font-size: 1.1rem;
    margin-top: 3px;
    flex-shrink: 0;
}
.about-feature-item span {
    font-size: 0.9rem;
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.4;
}

/* ============ 数据展示 ============ */
.stats-section {
    padding: 60px 0;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(241, 196, 15, 0.04) 0%, transparent 70%);
    pointer-events: none;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}
.stat-card {
    text-align: center;
    color: #fff;
    padding: 28px 16px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all var(--transition);
}
.stat-card:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.stat-card .stat-icon {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 10px;
}
.stat-card .stat-number {
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
    letter-spacing: 1px;
}
.stat-card .stat-unit {
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.6);
}
.stat-card .stat-desc {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 6px;
    letter-spacing: 0.5px;
}

/* ============ 产品中心 ============ */
.products-section {
    padding: 80px 0;
    background: var(--light);
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(52, 73, 94, 0.1);
}
.product-card .product-img-area {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.product-card .product-img-area.pvc-bg {
    background: linear-gradient(135deg, #e8f0f8 0%, #d5e3f0 100%);
}
.product-card .product-img-area.pe-bg {
    background: linear-gradient(135deg, #fef9e7 0%, #fdf0c8 100%);
}
.product-card .product-img-area.ppr-bg {
    background: linear-gradient(135deg, #eaf6f0 0%, #d4ece0 100%);
}
.product-card .product-icon-circle {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    z-index: 1;
}
.product-card .product-img-area.pvc-bg .product-icon-circle {
    background: rgba(52, 152, 219, 0.12);
    color: #2980b9;
}
.product-card .product-img-area.pe-bg .product-icon-circle {
    background: rgba(241, 196, 15, 0.18);
    color: #c8960c;
}
.product-card .product-img-area.ppr-bg .product-icon-circle {
    background: rgba(39, 174, 96, 0.12);
    color: #27ae60;
}
.product-card .product-tag {
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--dark);
    color: #fff;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    z-index: 2;
}
.product-card .product-tag.hot {
    background: #e74c3c;
}
.product-card .product-info {
    padding: 20px 22px 24px;
}
.product-card .product-info h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--dark);
    margin-bottom: 6px;
    font-weight: 600;
}
.product-card .product-info .product-desc {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.5;
    margin-bottom: 12px;
}
.product-card .product-info .product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.product-card .product-info .product-features span {
    font-size: 0.72rem;
    background: var(--light);
    color: var(--text-dark);
    padding: 4px 10px;
    border-radius: 12px;
    letter-spacing: 0.3px;
}
.product-card .product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--blue);
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    transition: gap var(--transition-fast);
}
.product-card .product-link:hover {
    gap: 10px;
    color: var(--blue-hover);
}
.product-card .product-link i {
    font-size: 0.7rem;
    transition: transform var(--transition-fast);
}
.product-card .product-link:hover i {
    transform: translateX(3px);
}

/* ============ 获奖产品高亮 ============ */
.award-highlight {
    padding: 60px 0;
    background: var(--white);
}
.award-card {
    background: linear-gradient(135deg, #fffef9 0%, #fffdf0 40%, #fffef7 100%);
    border: 2px solid rgba(241, 196, 15, 0.3);
    border-radius: var(--radius-xl);
    padding: 36px 40px;
    display: flex;
    align-items: center;
    gap: 32px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}
.award-card::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 160px;
    height: 160px;
    background: rgba(241, 196, 15, 0.06);
    border-radius: 50%;
    pointer-events: none;
}
.award-badge-icon {
    width: 90px;
    height: 90px;
    min-width: 90px;
    background: linear-gradient(135deg, #f1c40f 0%, #e6b80e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: #fff;
    box-shadow: 0 8px 28px rgba(241, 196, 15, 0.4);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}
.award-info {
    position: relative;
    z-index: 1;
    flex: 1;
}
.award-info .award-tag {
    display: inline-block;
    background: rgba(241, 196, 15, 0.2);
    color: #8b6d0b;
    font-weight: 600;
    font-size: 0.78rem;
    padding: 4px 12px;
    border-radius: 15px;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.award-info h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 6px;
}
.award-info p {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.5;
}
.award-info .award-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--text-gray);
}
.award-info .award-meta i {
    color: var(--gold);
    margin-right: 4px;
}

/* ============ 优势板块 ============ */
.advantages-section {
    padding: 80px 0;
    background: var(--light);
}
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.advantage-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid transparent;
}
.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(52, 73, 94, 0.08);
}
.advantage-card .adv-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: rgba(52, 152, 219, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--blue);
    transition: all var(--transition);
}
.advantage-card:hover .adv-icon {
    background: var(--blue);
    color: #fff;
    box-shadow: 0 8px 24px rgba(52, 152, 219, 0.3);
}
.advantage-card h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 8px;
    font-weight: 600;
}
.advantage-card p {
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* ============ 新闻动态 ============ */
.news-section {
    padding: 80px 0;
    background: var(--white);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.04);
    cursor: pointer;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.news-card .news-img {
    height: 180px;
    background: var(--light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(52, 73, 94, 0.2);
    position: relative;
}
.news-card .news-date-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--white);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    z-index: 1;
    line-height: 1.1;
}
.news-card .news-date-badge .day {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    display: block;
}
.news-card .news-date-badge .month {
    font-size: 0.7rem;
    color: var(--text-gray);
    letter-spacing: 0.5px;
}
.news-card .news-info {
    padding: 18px 20px 22px;
}
.news-card .news-info .news-cat {
    font-size: 0.72rem;
    color: var(--blue);
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.news-card .news-info h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--dark);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
}
.news-card .news-info p {
    font-size: 0.82rem;
    color: var(--text-gray);
    line-height: 1.5;
}

/* ============ CTA区域 ============ */
.cta-section {
    padding: 70px 0;
    background: var(--dark);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(241, 196, 15, 0.06) 0%, transparent 70%);
    pointer-events: none;
}
.cta-section .container {
    position: relative;
    z-index: 1;
}
.cta-section h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: #fff;
    font-weight: 700;
    margin-bottom: 12px;
}
.cta-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    margin-bottom: 28px;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}
.cta-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============ 页脚 ============ */
.site-footer {
    background: #1a2a38;
    color: rgba(255, 255, 255, 0.7);
    padding: 50px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 36px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-col h4 {
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
}
.footer-col p {
    font-size: 0.85rem;
    line-height: 1.6;
    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, 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-col ul li a:hover {
    color: var(--gold);
}
.footer-col ul li a i {
    font-size: 0.6rem;
    color: var(--gold);
}
.footer-col .contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.85rem;
    margin-bottom: 10px;
    line-height: 1.5;
}
.footer-col .contact-list li i {
    color: var(--gold);
    margin-top: 4px;
    flex-shrink: 0;
    font-size: 0.8rem;
}
.footer-bottom {
    padding: 18px 0;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.3px;
}
.footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.footer-bottom a:hover {
    color: var(--gold);
}

/* ============ 回到顶部 ============ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 46px;
    height: 46px;
    background: var(--dark);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    border: none;
    font-size: 1.1rem;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--gold);
    color: var(--dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

/* ============ 响应式设计 ============ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    .hero-content .hero-subtitle {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-visual {
        order: -1;
    }
    .hero-card-stack {
        max-width: 340px;
        margin: 0 auto;
    }
    .hero-stats-row {
        justify-content: center;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .about-image-area {
        min-height: 280px;
    }
    .about-image-placeholder {
        min-height: 280px;
    }
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .top-bar .container {
        flex-direction: column;
        text-align: center;
        gap: 6px;
    }
    .top-bar .contact-info {
        justify-content: center;
    }
    .top-bar .tag-line {
        justify-content: center;
    }
    .hamburger {
        display: flex;
    }
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 80px 28px 28px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition);
        z-index: 1001;
        gap: 6px;
    }
    .nav-links.active {
        right: 0;
    }
    .nav-links li {
        width: 100%;
    }
    .nav-links li a {
        display: block;
        padding: 10px 16px;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
    }
    .nav-cta {
        text-align: center;
        margin-top: 8px;
    }
    .mobile-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
    }
    .mobile-overlay.active {
        display: block;
    }
    .hero {
        min-height: auto;
        padding: 40px 0;
    }
    .hero-content h1 {
        font-size: 1.8rem;
    }
    .section-header h2 {
        font-size: 1.6rem;
    }
    .products-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }
    .advantages-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    .news-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .stat-card .stat-number {
        font-size: 2rem;
    }
    .award-card {
        flex-direction: column;
        text-align: center;
        padding: 24px 20px;
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }
    .hero-stats-row {
        gap: 8px;
    }
    .hero-stat-mini {
        padding: 8px 10px;
        min-width: 60px;
    }
    .hero-stat-mini .stat-num {
        font-size: 1.2rem;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .stat-card {
        padding: 18px 10px;
    }
    .stat-card .stat-number {
        font-size: 1.6rem;
    }
    .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }
    .section-header h2 {
        font-size: 1.4rem;
    }
    .about-content h3 {
        font-size: 1.4rem;
    }
    .about-features {
        grid-template-columns: 1fr;
    }
}