/* ================================================================
   宏正电器外贸站 - 首页样式
   ================================================================ */

/* ==================== CSS 变量 ==================== */
:root {
    --primary: #0a1628;
    --primary-light: #132238;
    --accent: #00b4d8;
    --accent-dark: #0096b7;
    --accent-glow: rgba(0, 180, 216, 0.3);
    --gold: #f0a500;
    --gold-light: #ffc233;
    --bg: #f8f9fc;
    --bg-white: #ffffff;
    --text-dark: #1a1a2e;
    --text-body: #4a4a6a;
    --text-light: #8b8ba7;
    --border: #e8e8f0;
    --shadow: 0 4px 24px rgba(10, 22, 40, 0.08);
    --shadow-lg: 0 12px 48px rgba(10, 22, 40, 0.12);
    --shadow-hover: 0 20px 60px rgba(10, 22, 40, 0.16);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-cn);
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

ul { list-style: none; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ==================== 通用组件 ==================== */
.section-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.section-label.light {
    color: rgba(255, 255, 255, 0.7);
}

.label-line {
    width: 40px;
    height: 2px;
    background: var(--accent);
    display: inline-block;
}

.section-label.light .label-line {
    background: var(--gold);
}

.section-title {
    font-size: 42px;
    font-weight: 900;
    color: var(--text-dark);
    line-height: 1.2;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 24px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-light);
    max-width: 560px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .section-label {
    justify-content: center;
}

.section-header .section-desc {
    margin: 0 auto;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: var(--font-cn);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

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

.btn-outline-dark:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--primary);
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(240, 165, 0, 0.3);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(240, 165, 0, 0.4);
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-en);
    font-weight: 900;
    font-size: 18px;
    color: #fff;
    flex-shrink: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.brand-cn {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
}

.brand-en {
    font-family: var(--font-en);
    font-size: 10px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 2px;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 20px;
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-quote {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-quote:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px var(--accent-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== Hero 全屏大图区 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--primary);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10, 22, 40, 0.92) 0%, rgba(10, 22, 40, 0.75) 40%, rgba(10, 22, 40, 0.3) 65%, transparent 85%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding-top: 80px;
    text-align: left;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.25);
    border-radius: 50px;
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 32px;
}

.hero-badge i {
    font-size: 14px;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title-accent {
    color: var(--gold);
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 640px;
}

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

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.scroll-indicator span {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    color: rgba(255, 255, 255, 0.4);
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* Hero 内统计条 */
.hero-stats {
    position: absolute;
    bottom: 50px;
    left: 0;
    right: 0;
    z-index: 2;
    background: rgba(10, 22, 40, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.hero-stat-item {
    text-align: center;
    padding: 28px 20px;
    position: relative;
}

.hero-stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: rgba(255, 255, 255, 0.12);
}

.hero-stat-number {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    font-family: var(--font-en);
}

.hero-stat-unit {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    font-family: var(--font-en);
    margin-top: 4px;
}

.hero-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 6px;
}

/* ==================== Hero 出口实力条 ==================== */
.hero-export {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    background: rgba(10, 22, 40, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 14px 0;
}

.hero-export-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-export-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.hero-export-item i {
    font-size: 14px;
    color: var(--gold);
}

/* ==================== 数据统计条 ==================== */
.stats-bar {
    background: var(--primary);
    padding: 0;
    position: relative;
    margin-top: -1px;
}

.stats-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-item {
    text-align: center;
    padding: 48px 24px;
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: rgba(255, 255, 255, 0.08);
}

.stat-number {
    font-family: var(--font-en);
    font-size: 52px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-unit {
    font-family: var(--font-en);
    font-size: 18px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 1px;
}

/* ==================== 关于我们 ==================== */
.about {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.about-deco-text {
    position: absolute;
    right: -40px;
    top: 50%;
    transform: translateY(-50%) rotate(90deg);
    font-family: var(--font-en);
    font-size: 120px;
    font-weight: 900;
    color: rgba(0, 0, 0, 0.02);
    letter-spacing: 20px;
    pointer-events: none;
    white-space: nowrap;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-img-wrapper {
    position: relative;
}

.about-img-placeholder {
    width: 100%;
    height: 480px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 16px;
    overflow: hidden;
    position: relative;
}

.about-img-real {
    width: 100%;
    height: 480px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    display: block;
}

.about-img-placeholder i {
    font-size: 64px;
    color: var(--accent);
    opacity: 0.4;
}

.about-img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(0, 180, 216, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(240, 165, 0, 0.05) 0%, transparent 50%);
}

.about-img-frame {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 2px solid var(--accent);
    border-radius: var(--radius-lg);
    opacity: 0.15;
    z-index: -1;
}

.about-experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px var(--accent-glow);
    z-index: 2;
}

.exp-number {
    font-family: var(--font-en);
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.exp-text {
    font-family: var(--font-en);
    font-size: 10px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    line-height: 1.3;
    letter-spacing: 1px;
}

.about-content .section-label {
    margin-bottom: 12px;
}

.about-content .section-title {
    margin-bottom: 8px;
}

.about-text {
    font-size: 16px;
    color: var(--text-body);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-text strong {
    color: var(--accent);
    font-weight: 700;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 32px 0;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
}

.highlight-item i {
    color: var(--accent);
    font-size: 16px;
}

/* ==================== 产品中心 ==================== */
.products {
    padding: 120px 0;
    background: var(--bg);
}

.product-categories {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.product-card-bg {
    height: 200px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-card-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 180, 216, 0.15) 0%, transparent 70%);
}

.product-card-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: rgba(0, 180, 216, 0.15);
    border: 1px solid rgba(0, 180, 216, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.product-card-icon i {
    font-size: 32px;
    color: var(--accent);
}

.product-card-featured .product-card-bg {
    background: linear-gradient(135deg, #0d2137, #1a3a5c);
}

.product-card-featured .product-card-bg::before {
    background: radial-gradient(circle at 50% 50%, rgba(240, 165, 0, 0.12) 0%, transparent 70%);
}

.product-card-featured .product-card-icon {
    background: rgba(240, 165, 0, 0.15);
    border-color: rgba(240, 165, 0, 0.3);
}

.product-card-featured .product-card-icon i {
    color: var(--gold);
}

.product-card-content {
    padding: 32px;
}

.product-card-tag {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 12px;
}

.product-card-featured .product-card-tag {
    color: var(--gold);
}

.product-card-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.product-card-en {
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 16px;
}

.product-card-desc {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-card-list {
    margin-bottom: 24px;
}

.product-card-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-body);
    border-bottom: 1px solid var(--border);
}

.product-card-list li:last-child {
    border-bottom: none;
}

.product-card-list li i {
    color: var(--accent);
    font-size: 12px;
}

.product-card-featured .product-card-list li i {
    color: var(--gold);
}

.product-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
}

.product-card-link:hover {
    gap: 14px;
}

.product-card-featured .product-card-link {
    color: var(--gold);
}

.products-more {
    text-align: center;
    margin-top: 48px;
}

/* ==================== 核心优势 ==================== */
.advantages {
    padding: 120px 0;
    position: relative;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.advantage-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    opacity: 0;
    transition: var(--transition);
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(0, 180, 216, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
}

.advantage-icon i {
    font-size: 24px;
    color: var(--accent);
    position: relative;
    z-index: 1;
}

.advantage-icon-bg {
    position: absolute;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--accent);
    opacity: 0;
    transition: var(--transition);
}

.advantage-card:hover .advantage-icon-bg {
    opacity: 0.1;
    transform: scale(1.5);
}

.advantage-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

.advantage-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-family: var(--font-en);
    font-size: 48px;
    font-weight: 900;
    color: rgba(0, 0, 0, 0.03);
    line-height: 1;
}

/* ==================== 车间展示 ==================== */
.workshop {
    padding: 120px 0;
}

.workshop-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 20px;
}

.workshop-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.workshop-card-lg {
    grid-row: span 1;
}

.workshop-img {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
}

.workshop-card-lg .workshop-img {
    height: 360px;
}

.workshop-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.workshop-card:hover .workshop-img img {
    transform: scale(1.05);
}

.workshop-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(10, 22, 40, 0.75) 100%);
    display: flex;
    align-items: flex-end;
    padding: 24px;
}

.workshop-label {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

/* ==================== 应用领域 ==================== */
.applications {
    padding: 120px 0;
    background: var(--bg);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}

.app-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 32px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: default;
}

.app-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.app-card:hover .app-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.app-card:hover .app-icon i {
    color: #fff;
}

.app-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(0, 180, 216, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: var(--transition);
}

.app-icon i {
    font-size: 22px;
    color: var(--accent);
    transition: var(--transition);
}

.app-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.app-card p {
    font-size: 12px;
    color: var(--text-light);
}

/* ==================== 项目指引 ==================== */
.project-guide {
    padding: 100px 0;
    background: var(--primary);
    position: relative;
    overflow: hidden;
}

.project-guide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    background-size: cover;
    background-position: center center;
    opacity: 0.08;
}

.project-guide-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 1;
}

.project-guide-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-top: 16px;
}

.project-guide-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    max-width: 960px;
    margin: 0 auto 48px;
    position: relative;
    z-index: 1;
}

.guide-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    flex: 1;
    padding: 0 32px;
}

.guide-step-number {
    font-size: 42px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.12);
    font-family: var(--font-en);
    line-height: 1;
    flex-shrink: 0;
}

.guide-step-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.guide-step-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
}

.guide-step-divider {
    width: 1px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    margin-top: 10px;
}

.project-guide-cta {
    text-align: center;
    position: relative;
    z-index: 1;
}

/* ==================== 新闻动态 ==================== */
.news {
    padding: 120px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.news-featured {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-featured:hover {
    box-shadow: var(--shadow-hover);
}

.news-featured-img {
    height: 280px;
    position: relative;
    overflow: hidden;
}

.news-img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-img-real {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.news-img-placeholder i {
    font-size: 48px;
    color: rgba(255, 255, 255, 0.15);
}

.news-featured .news-date-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--accent);
    border-radius: 12px;
    padding: 10px 16px;
    text-align: center;
    box-shadow: 0 4px 16px var(--accent-glow);
}

.news-featured .news-day {
    display: block;
    font-family: var(--font-en);
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.news-featured .news-month {
    display: block;
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
}

.news-featured-content {
    padding: 32px;
}

.news-tag {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(0, 180, 216, 0.08);
    color: var(--accent);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
}

.news-featured-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-featured-content p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: 20px;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
}

.news-link:hover {
    gap: 14px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.news-item {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateX(4px);
}

.news-item-date {
    flex-shrink: 0;
    text-align: center;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: 12px;
    min-width: 72px;
}

.ni-day {
    display: block;
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1;
}

.ni-month {
    display: block;
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-light);
    margin-top: 4px;
}

.news-item-content {
    flex: 1;
}

.news-item-content .news-tag {
    margin-bottom: 8px;
}

.news-item-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-item-content p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ==================== CTA 联系我们 ==================== */
.cta {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary) 0%, #0d2137 50%, var(--primary) 100%);
}

.cta-overlay {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 180, 216, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(240, 165, 0, 0.08) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.cta-content .section-label {
    justify-content: center;
}

.cta-title {
    font-size: 42px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 48px;
}

.cta-info {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 48px;
}

.cta-info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
}

.cta-info-item i {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 180, 216, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--accent);
    flex-shrink: 0;
}

.cta-info-label {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 2px;
}

.cta-info-value {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
}

/* ==================== 页脚 ==================== */
.footer {
    background: #060e1a;
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 16px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent);
    color: #fff;
}

.footer-col-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-contact li i {
    color: var(--accent);
    margin-top: 3px;
    width: 16px;
    text-align: center;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.25);
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--accent);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 18px;
    box-shadow: 0 4px 20px var(--accent-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--accent-glow);
}

/* ==================== 滚动动画 ==================== */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }
.delay-5 { animation-delay: 0.75s; }
.delay-6 { animation-delay: 0.9s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }

.reveal-up.revealed,
.reveal-left.revealed,
.reveal-right.revealed {
    opacity: 1;
    transform: translate(0);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .container { padding: 0 32px; }
    .hero-title { font-size: 52px; }
    .section-title { font-size: 36px; }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .applications-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .workshop-img { height: 260px; }
    .workshop-card-lg .workshop-img { height: 280px; }
}

@media (max-width: 992px) {
    .navbar-menu { display: none; }
    .nav-toggle { display: flex; }
    
    .navbar-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 4px;
    }

    .btn-quote { display: none; }

    .hero-title { font-size: 42px; }
    .hero-subtitle { font-size: 16px; }
    
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(2)::after { display: none; }
    
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-img-placeholder { height: 360px; }
    .about-img-real { height: 360px; }
    
    .product-categories { grid-template-columns: 1fr; }
    
    .news-grid { grid-template-columns: 1fr; }
    
    .cta-info { flex-direction: column; align-items: center; gap: 24px; }
    
    .project-guide-steps { flex-direction: column; align-items: center; gap: 32px; }
    .guide-step { padding: 0; justify-content: center; }
    .guide-step-divider { width: 60px; height: 1px; margin: 0; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .hero-stats { position: relative; bottom: auto; }
        .hero-export { position: relative; }
        .hero-export-grid { gap: 20px; }
    .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-stat-item:nth-child(2)::after { display: none; }
    .hero-stat-number { font-size: 28px; }
    .hero-title { font-size: 32px; }
    .section-title { font-size: 28px; }
    .cta-title { font-size: 28px; }
    
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-number { font-size: 36px; }
    
    .advantages-grid { grid-template-columns: 1fr; }
    .applications-grid { grid-template-columns: repeat(2, 1fr); }
    .workshop-grid { grid-template-columns: 1fr; }
    .workshop-img { height: 240px; }
    
    .about-highlights { grid-template-columns: 1fr; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    
    .hero-btns { flex-direction: column; }
    .hero-btns .btn { justify-content: center; }
    
    .news-item { flex-direction: column; gap: 16px; }
    
    .project-guide { padding: 80px 0; }
    .project-guide-title { font-size: 28px; }
    .project-guide-steps { flex-direction: column; align-items: center; gap: 28px; }
    .guide-step { padding: 0; justify-content: center; }
    .guide-step-divider { width: 40px; height: 1px; margin: 0; }
}

@media (max-width: 480px) {
    .hero-stats-grid { grid-template-columns: 1fr 1fr; }
    .hero-stat-item { padding: 20px 12px; }
    .hero-stat-number { font-size: 24px; }

    .hero-title { font-size: 28px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-item { padding: 32px 16px; }
    .applications-grid { grid-template-columns: 1fr 1fr; }
}

/* ================================================================
   公司简介页面专属样式
   ================================================================ */

/* ==================== 页面 Banner ==================== */
.page-banner {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--primary);
    padding-top: 80px;
}

.page-banner-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0, 180, 216, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 30%, rgba(240, 165, 0, 0.06) 0%, transparent 50%),
        linear-gradient(160deg, #0a1628 0%, #0f1f35 40%, #0d2137 70%, #0a1628 100%);
}

.page-banner-overlay {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="pg" width="8" height="8" patternUnits="userSpaceOnUse"><path d="M 8 0 L 0 0 0 8" fill="none" stroke="rgba(255,255,255,0.025)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23pg)"/></svg>');
}

.page-banner-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.page-banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 60px 0;
}

.breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.5);
}

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

.breadcrumb i {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.3);
}

.breadcrumb span {
    color: var(--accent);
    font-weight: 600;
}

.page-banner-title {
    font-size: 56px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: 4px;
}

.page-banner-title .accent-text {
    background: linear-gradient(135deg, var(--accent), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-banner-subtitle {
    font-family: var(--font-en);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 8px;
    color: rgba(255, 255, 255, 0.35);
}

.banner-scroll-hint {
    margin-top: 48px;
}

.scroll-mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 13px;
    margin: 0 auto;
    position: relative;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

/* ==================== 公司简介区 ==================== */
.about-intro {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-intro-image {
    position: relative;
}

.intro-img-main {
    position: relative;
}

.intro-img-placeholder {
    width: 100%;
    height: 420px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 16px;
    position: relative;
    overflow: hidden;
}

.intro-img-real {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    display: block;
}

.intro-img-real.small {
    height: 200px;
    border-radius: var(--radius);
}

.intro-img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(0, 180, 216, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(240, 165, 0, 0.05) 0%, transparent 50%);
}

.intro-img-placeholder i {
    font-size: 56px;
    color: var(--accent);
    opacity: 0.4;
    position: relative;
    z-index: 1;
}

.intro-img-placeholder.small {
    height: 200px;
}

.intro-img-placeholder.small i {
    font-size: 36px;
}

.intro-img-secondary {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 220px;
    z-index: 2;
}

.intro-img-secondary .intro-img-placeholder {
    border: 4px solid var(--bg-white);
    box-shadow: var(--shadow-lg);
}

.intro-year-badge {
    position: absolute;
    top: -20px;
    right: 40px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 16px;
    padding: 16px 24px;
    text-align: center;
    box-shadow: 0 8px 32px var(--accent-glow);
    z-index: 3;
}

.year-num {
    display: block;
    font-family: var(--font-en);
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.year-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 4px;
}

.intro-lead {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.intro-lead strong {
    color: var(--accent);
}

.intro-text {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 16px;
}

.intro-text strong {
    color: var(--accent);
    font-weight: 700;
}

.intro-signature {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.signature-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    border-radius: 2px;
    margin-bottom: 12px;
}

.signature-text {
    font-size: 15px;
    color: var(--text-light);
    font-style: italic;
    line-height: 1.8;
}

.signature-text strong {
    color: var(--accent);
    font-style: normal;
}

/* ==================== 企业理念 ==================== */
.company-values {
    padding: 120px 0;
    background: var(--bg);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.value-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 48px 36px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.value-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    opacity: 0;
    transition: var(--transition);
}

.value-card:hover::after {
    opacity: 1;
}

.value-icon-wrap {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 28px;
}

.value-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(0, 180, 216, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.value-icon i {
    font-size: 28px;
    color: var(--accent);
    transition: var(--transition);
}

.value-card:hover .value-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.value-card:hover .value-icon i {
    color: #fff;
}

.value-icon-ring {
    position: absolute;
    inset: -8px;
    border-radius: 24px;
    border: 2px dashed rgba(0, 180, 216, 0.15);
    animation: ringRotate 20s linear infinite;
}

@keyframes ringRotate {
    to { transform: rotate(360deg); }
}

.value-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.value-en {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 16px;
}

.value-desc {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
}

.value-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-family: var(--font-en);
    font-size: 48px;
    font-weight: 900;
    color: rgba(0, 0, 0, 0.03);
    line-height: 1;
}

/* ==================== 发展历程 ==================== */
.timeline-section {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.timeline-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg) 100%);
}

.timeline-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(0, 180, 216, 0.04) 0%, transparent 50%);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent), var(--gold), transparent);
    transform: translateX(-50%);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 48px 60px;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-item.timeline-right {
    left: 50%;
    text-align: left;
}

.timeline-dot {
    position: absolute;
    top: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-white);
    border: 3px solid var(--accent);
    z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-dot,
.timeline-item.timeline-right .timeline-dot {
    left: -10px;
}

.timeline-dot.active {
    border-color: var(--gold);
    box-shadow: 0 0 0 6px rgba(240, 165, 0, 0.15);
}

.timeline-dot-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}

.timeline-dot.active .timeline-dot-inner {
    background: var(--gold);
}

.timeline-content {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.timeline-year {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.timeline-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
}

/* ==================== 生产实力 ==================== */
.capabilities {
    padding: 120px 0;
    background: var(--bg);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.capability-card {
    display: flex;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.capability-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.capability-img {
    flex-shrink: 0;
    width: 200px;
    overflow: hidden;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.capability-img-real {
    width: 100%;
    height: 100%;
    min-height: 200px;
    object-fit: cover;
    display: block;
}

.capability-placeholder {
    width: 100%;
    height: 100%;
    min-height: 200px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.capability-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 180, 216, 0.12) 0%, transparent 60%);
}

.capability-placeholder i {
    font-size: 40px;
    color: var(--accent);
    opacity: 0.4;
    position: relative;
    z-index: 1;
}

.capability-content {
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.capability-content h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.capability-content p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
}

/* ==================== 荣誉资质 ==================== */
.honors {
    padding: 120px 0;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.honor-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.honor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}

.honor-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.08), rgba(0, 180, 216, 0.03));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.honor-card:hover .honor-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.honor-icon i {
    font-size: 28px;
    color: var(--accent);
    transition: var(--transition);
}

.honor-card:hover .honor-icon i {
    color: #fff;
}

.honor-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.4;
}

.honor-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ==================== 合作承诺 ==================== */
.commitment {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.commitment-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary) 0%, #0d2137 50%, var(--primary) 100%);
}

.commitment-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0, 180, 216, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(240, 165, 0, 0.06) 0%, transparent 50%);
}

.commitment-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.commitment-content .section-label {
    justify-content: center;
}

.commitment-title {
    font-size: 42px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 40px;
}

.commitment-quote {
    position: relative;
    padding: 40px;
    margin-bottom: 48px;
}

.commitment-quote > i {
    font-size: 32px;
    color: rgba(0, 180, 216, 0.2);
}

.commitment-quote > i:first-child {
    display: block;
    margin-bottom: 16px;
}

.commitment-quote > i:last-child {
    display: block;
    margin-top: 16px;
}

.commitment-quote p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 2;
    font-style: italic;
}

.commitment-quote p strong {
    color: var(--gold);
    font-size: 22px;
    font-style: normal;
}

.commitment-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 48px;
    text-align: left;
}

.commit-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    transition: var(--transition);
}

.commit-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 180, 216, 0.3);
}

.commit-item i {
    color: var(--accent);
    font-size: 18px;
    flex-shrink: 0;
}

.commit-item span {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
}

/* ==================== About 页面 section-title 浅色变体 ==================== */
.section-title.light {
    color: #fff;
}

.section-desc.light {
    color: rgba(255, 255, 255, 0.5);
}

/* ==================== About 页面响应式 ==================== */
@media (max-width: 1200px) {
    .page-banner-title { font-size: 46px; }
    .values-grid { grid-template-columns: repeat(3, 1fr); }
    .honors-grid { grid-template-columns: repeat(2, 1fr); }
    .capabilities-grid { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
    .page-banner { min-height: 50vh; }
    .page-banner-title { font-size: 38px; }

    .about-intro-grid { grid-template-columns: 1fr; gap: 48px; }
    .intro-img-secondary { display: none; }
    .intro-year-badge { top: auto; bottom: -20px; right: 20px; }

    .values-grid { grid-template-columns: 1fr; }

    .timeline-line { left: 20px; }
    .timeline-item,
    .timeline-item.timeline-right {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 56px;
        padding-right: 0;
    }
    .timeline-item .timeline-dot,
    .timeline-item.timeline-right .timeline-dot {
        left: 10px !important;
        right: auto !important;
    }

    .capabilities-grid { grid-template-columns: 1fr; }
    .capability-card { flex-direction: column; }
    .capability-img { width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
    .capability-placeholder { min-height: 160px; }

    .honors-grid { grid-template-columns: repeat(2, 1fr); }

    .commitment-items { grid-template-columns: 1fr; }
    .commitment-title { font-size: 32px; }
    .commitment-quote p { font-size: 17px; }
}

@media (max-width: 768px) {
    .page-banner-title { font-size: 32px; letter-spacing: 2px; }
    .page-banner-subtitle { font-size: 13px; letter-spacing: 4px; }

    .section-title { font-size: 30px; }

    .intro-img-placeholder { height: 300px; }
    .intro-img-real { height: 300px; }

    .commitment-title { font-size: 28px; }
    .commitment-quote p { font-size: 16px; }
    .commitment-quote p strong { font-size: 18px; }
}

@media (max-width: 480px) {
    .page-banner-title { font-size: 28px; }
    .honors-grid { grid-template-columns: 1fr; }
}

/* ================================================================
   产品中心页面专属样式
   ================================================================ */

/* 分类筛选栏 */
.product-filter-section {
    padding: 48px 0 0;
    background: var(--bg-white);
    position: sticky;
    top: 72px;
    z-index: 100;
}

.filter-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-cn);
    text-decoration: none;
}

.filter-btn i {
    font-size: 14px;
    color: var(--text-light);
    transition: var(--transition);
}

.filter-btn:hover {
    background: #0ea5c9;
    color: #fff;
    border-color: #0ea5c9;
}

.filter-btn:hover i {
    color: var(--accent);
}

/* 产品列表区 */
.product-list-section {
    padding: 48px 0 120px;
    background: var(--bg);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-item {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.product-item-link {
    display: block;
    color: inherit;
}

.product-item-img {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.product-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-item:hover .product-item-img img {
    transform: scale(1.05);
}

.product-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.product-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 180, 216, 0.12) 0%, transparent 60%);
}

.product-placeholder i {
    font-size: 48px;
    color: var(--accent);
    opacity: 0.4;
    position: relative;
    z-index: 1;
}

.product-item-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 16px;
    background: rgba(0, 180, 216, 0.9);
    color: #fff;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.product-item-badge.featured {
    background: rgba(240, 165, 0, 0.9);
}

.product-item-info {
    padding: 16px 20px 20px;
}

.product-item-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.product-item-en {
    display: none;
}

.product-item-desc {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.6;
    margin-bottom: 12px;
}

.product-item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 0;
}

.product-item-tags span {
    padding: 4px 12px;
    background: var(--bg);
    color: var(--text-light);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
}

.product-item-arrow {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 28px 24px;
}

.product-item-arrow i {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 14px;
    transition: var(--transition);
}

.product-item:hover .product-item-arrow i {
    background: var(--accent);
    color: #fff;
    transform: translateX(4px);
}

.no-results {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-light);
}

.no-results i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.no-results p {
    font-size: 16px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
}

.page-btn {
    min-width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-body);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-cn);
    padding: 0 16px;
    text-decoration: none;
}

.page-btn:hover:not(:disabled):not(.active) {
    border-color: var(--accent);
    color: var(--accent);
}

.page-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-btn i {
    font-size: 13px;
}

.page-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    font-size: 15px;
    color: var(--text-light);
    user-select: none;
}

.page-first,
.page-last {
    padding: 0 16px;
    font-size: 14px;
}

/* ================================================================
   产品详情页面专属样式
   ================================================================ */

/* 详情页 Banner 缩小版 */
.page-banner-sm {
    min-height: 40vh;
    padding-top: 100px;
}

.page-banner-sm .page-banner-content {
    padding: 40px 0;
}

.page-banner-sm .page-banner-title {
    font-size: 42px;
}

.page-banner-sm .breadcrumb {
    flex-wrap: wrap;
    justify-content: center;
}

/* 产品主信息区 */
.product-detail-main {
    padding: 80px 0;
    background: var(--bg-white);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

/* 图片画廊 */
.product-detail-gallery {
    position: sticky;
    top: 100px;
}

.gallery-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 16px;
}

.gallery-main-img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    display: block;
}

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.gallery-thumb {
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.gallery-thumb.active {
    border-color: var(--accent);
}

.gallery-thumb:hover {
    border-color: var(--accent);
}

.gallery-thumb img {
    width: 100%;
    height: 80px;
    object-fit: cover;
    display: block;
}

/* 产品信息 */
.detail-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 180, 216, 0.08);
    color: var(--accent);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.detail-category-badge i {
    font-size: 12px;
}

.detail-product-title {
    font-size: 36px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 4px;
    line-height: 1.2;
}

.detail-product-en {
    font-family: var(--font-en);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 28px;
}

.detail-features {
    margin-bottom: 28px;
}

.detail-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--text-body);
    border-bottom: 1px solid var(--border);
}

.detail-feature-item:last-child {
    border-bottom: none;
}

.detail-feature-item i {
    color: var(--accent);
    font-size: 16px;
    flex-shrink: 0;
}

.detail-specs-brief {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 32px;
    padding: 24px;
    background: var(--bg);
    border-radius: var(--radius);
}

.spec-brief-item {
    text-align: center;
}

.spec-brief-label {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 6px;
}

.spec-brief-value {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
}

.detail-actions {
    display: flex;
    gap: 16px;
}

/* 产品详情内容区 */
.product-detail-content {
    padding: 80px 0;
    background: var(--bg);
}

.detail-content-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
}

.detail-section {
    margin-bottom: 48px;
}

.detail-section-header {
    margin-bottom: 28px;
}

.detail-section-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-dark);
    margin-top: 8px;
}

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

.detail-text p:last-child {
    margin-bottom: 0;
}

/* 核心优势 */
.detail-highlights {
    margin-top: 40px;
}

.highlights-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.highlight-card {
    padding: 24px;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.highlight-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.highlight-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 180, 216, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.highlight-icon i {
    font-size: 20px;
    color: var(--accent);
}

.highlight-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.highlight-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 技术参数表 */
.specs-table {
    background: var(--bg-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.specs-table-row {
    display: flex;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.specs-table-row:last-child {
    border-bottom: none;
}

.specs-table-row:hover {
    background: var(--bg);
}

.specs-label {
    flex-shrink: 0;
    width: 140px;
    padding: 16px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    background: var(--bg);
    border-right: 1px solid var(--border);
}

.specs-value {
    flex: 1;
    padding: 16px 20px;
    font-size: 14px;
    color: var(--text-body);
}

/* ==================== 产品详情页 - 图文文章式布局 ==================== */
.product-detail-simple {
    padding: 80px 0;
    background: var(--bg);
}

.detail-article {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 56px 64px;
    box-shadow: var(--shadow);
}

.detail-article-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.detail-article-en {
    font-size: 15px;
    color: var(--accent);
    font-family: var(--font-en);
    font-weight: 500;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border);
}

.detail-article p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 2;
    margin-bottom: 24px;
    text-indent: 2em;
}

.detail-article h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 40px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
}

.detail-article-img {
    width: 100%;
    border-radius: var(--radius);
    margin: 24px 0;
    box-shadow: var(--shadow);
}

/* 参数表格 */
.detail-article-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 24px;
    font-size: 14px;
}

.detail-article-table tr {
    border-bottom: 1px solid var(--border);
}

.detail-article-table tr:last-child {
    border-bottom: none;
}

.detail-article-table tr:nth-child(even) {
    background: var(--bg);
}

.detail-article-table td {
    padding: 14px 20px;
}

.detail-article-table td:first-child {
    font-weight: 600;
    color: var(--text-dark);
    width: 160px;
    white-space: nowrap;
}

.detail-article-table td:last-child {
    color: var(--text-body);
}

/* 响应式 */
@media (max-width: 768px) {
    .product-detail-simple { padding: 48px 0; }
    .detail-article { padding: 32px 24px; }
    .detail-article-title { font-size: 24px; }
    .detail-article-table td:first-child { width: 110px; }
}

/* 旧版分块样式（保留兼容） */
.detail-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}

.detail-block:last-child {
    margin-bottom: 0;
}

.detail-block-reverse {
    direction: rtl;
}

.detail-block-reverse > * {
    direction: ltr;
}

.detail-block-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.detail-block-img img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.detail-block:hover .detail-block-img img {
    transform: scale(1.02);
}

.detail-block-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-dark);
    margin: 8px 0 20px;
}

.detail-block-text p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 14px;
}

.detail-feature-list {
    margin-top: 8px;
}

.detail-feature-list .detail-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-body);
    border-bottom: 1px solid var(--border);
}

.detail-feature-list .detail-feature-item:last-child {
    border-bottom: none;
}

.detail-feature-list .detail-feature-item i {
    color: var(--accent);
    font-size: 16px;
    margin-top: 3px;
    flex-shrink: 0;
}

.detail-specs-simple {
    margin-top: 8px;
}

.specs-row {
    display: flex;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.specs-row:last-child {
    border-bottom: none;
}

.specs-row-label {
    flex-shrink: 0;
    width: 120px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.specs-row-value {
    flex: 1;
    font-size: 14px;
    color: var(--text-body);
}

.detail-app-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 8px;
}

.detail-app-item {
    display: flex;
    gap: 14px;
    padding: 18px;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.detail-app-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.detail-app-item > i {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(0, 180, 216, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--accent);
}

.detail-app-item strong {
    display: block;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.detail-app-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: 0;
}

@media (max-width: 992px) {
    .detail-block {
        grid-template-columns: 1fr;
        gap: 32px;
        margin-bottom: 60px;
    }
    .detail-block-reverse {
        direction: ltr;
    }
    .detail-block-img img {
        height: 300px;
    }
    .detail-app-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .detail-block { margin-bottom: 48px; }
    .detail-block-img img { height: 240px; }
    .detail-block-title { font-size: 24px; }
    .specs-row-label { width: 100px; }
}

.application-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.application-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-hover);
}

.application-item > i {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 180, 216, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--accent);
}

.application-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.application-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 相关产品 */
.related-products {
    padding: 120px 0;
    background: var(--bg-white);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.related-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    color: inherit;
}

.related-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.related-card-img {
    height: 180px;
    overflow: hidden;
}

.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.related-card:hover .related-card-img img {
    transform: scale(1.05);
}

.related-card-content {
    padding: 24px;
}

.related-card-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(240, 165, 0, 0.1);
    color: var(--gold);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 12px;
}

.related-card-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.related-card-content p {
    font-size: 13px;
    color: var(--text-body);
    line-height: 1.6;
    margin-bottom: 16px;
}

.related-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
}

.related-card:hover .related-card-link {
    gap: 10px;
}

/* ==================== 产品页响应式 ==================== */
@media (max-width: 1200px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .product-detail-grid { gap: 40px; }
    .detail-content-grid { grid-template-columns: 1fr; gap: 48px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
    .product-filter-section {
        position: static;
        padding-top: 32px;
    }

    .filter-bar {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 20px;
        -webkit-overflow-scrolling: touch;
    }

    .filter-btn {
        flex-shrink: 0;
    }

    .product-grid { grid-template-columns: 1fr; }

    .product-detail-grid { grid-template-columns: 1fr; }
    .product-detail-gallery { position: static; }

    .detail-specs-brief { grid-template-columns: repeat(3, 1fr); }
    .highlights-grid { grid-template-columns: 1fr; }

    .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .page-banner-sm .page-banner-title { font-size: 32px; }

    .detail-product-title { font-size: 28px; }
    .detail-actions { flex-direction: column; }
    .detail-actions .btn { justify-content: center; }

    .detail-specs-brief { grid-template-columns: 1fr; }

    .specs-table-row { flex-direction: column; }
    .specs-label {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 12px 20px 8px;
    }
    .specs-value {
        padding: 8px 20px 12px;
    }

    .application-item { flex-direction: column; gap: 12px; }

    .application-list-full { grid-template-columns: 1fr; }
    .detail-applications-full { margin-top: 48px; padding-top: 32px; }
}

@media (max-width: 480px) {
    .filter-btn {
        padding: 10px 20px;
        font-size: 13px;
    }

    .gallery-placeholder { height: 280px; }
    .gallery-main-img { height: 280px; }
    .gallery-thumbs { grid-template-columns: repeat(4, 1fr); gap: 8px; }
    .thumb-placeholder { height: 60px; }
}

/* ==================== 新闻列表页 ==================== */
.news-filter-section {
    padding: 24px 0 0;
    background: var(--bg);
    position: sticky;
    top: 72px;
    z-index: 50;
}

.news-list-section {
    padding: 48px 0 80px;
    background: var(--bg);
}

/* 置顶新闻卡片 */
.news-featured-card {
    margin-bottom: 40px;
}

.news-featured-card .news-featured-link {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
}

.news-featured-card .news-featured-link:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.news-featured-card .news-featured-img {
    position: relative;
    min-height: 320px;
    overflow: hidden;
}

.news-featured-card .news-featured-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.news-featured-card .news-featured-link:hover .news-featured-img img {
    transform: scale(1.05);
}

.news-featured-card .news-featured-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--gold);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 20px;
    letter-spacing: 1px;
}

.news-featured-card .news-featured-body {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-featured-card .news-featured-body h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark);
    margin: 12px 0 16px;
    line-height: 1.4;
}

.news-featured-card .news-featured-body p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: 24px;
}

.news-featured-card .news-read-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    transition: var(--transition);
}

.news-featured-card .news-featured-link:hover .news-read-more {
    color: var(--accent-dark);
}

.news-featured-card .news-read-more i {
    margin-left: 6px;
    transition: var(--transition);
}

.news-featured-card .news-featured-link:hover .news-read-more i {
    transform: translateX(4px);
}

/* 新闻列表 */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 新闻卡片 */
.news-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.news-card-link {
    display: grid;
    grid-template-columns: 320px 1fr;
    text-decoration: none;
    color: inherit;
}

.news-card-img {
    height: 220px;
    overflow: hidden;
}

.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-card-img img {
    transform: scale(1.05);
}

.news-card-body {
    padding: 28px 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.news-featured-card .news-featured-body .news-tag {
    display: inline-block;
    background: rgba(0, 180, 216, 0.1);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    align-self: flex-start;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
}

.news-date i {
    margin-right: 4px;
}

.news-card-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.5;
    transition: var(--transition);
}

.news-card:hover .news-card-body h3 {
    color: var(--accent);
}

.news-card-body p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 新闻日期徽章（置顶卡片） */
.news-featured-card .news-date-badge {
    position: absolute;
    bottom: 16px;
    right: 16px;
    background: var(--accent);
    color: #fff;
    padding: 8px 14px;
    border-radius: var(--radius);
    text-align: center;
    line-height: 1.2;
}

.news-featured-card .news-date-badge .news-day {
    display: block;
    font-size: 28px;
    font-weight: 800;
}

.news-featured-card .news-date-badge .news-month {
    display: block;
    font-size: 12px;
    font-weight: 500;
    opacity: 0.9;
}

/* ==================== 新闻详情页 ==================== */
.news-article-section {
    padding: 60px 0 80px;
    background: var(--bg);
}

.news-article {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 56px 64px;
    box-shadow: var(--shadow);
}

/* 文章头部 */
.news-article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 2px solid var(--border);
}

.news-article-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--text-dark);
    margin: 16px 0 20px;
    line-height: 1.4;
}

.news-article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-light);
}

.news-article-meta i {
    margin-right: 6px;
}

/* 文章摘要 */
.news-article-summary {
    background: rgba(0, 180, 216, 0.05);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 20px 28px;
    margin-bottom: 40px;
}

.news-article-summary p {
    font-size: 15px;
    color: var(--text-dark);
    line-height: 1.9;
    margin: 0;
}

/* 文章正文 */
.news-article-content {
    margin-bottom: 40px;
}

.news-article-content p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 2;
    margin-bottom: 24px;
    text-indent: 2em;
}

.news-article-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 40px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
}

.news-article-content .detail-article-img {
    width: 100%;
    border-radius: var(--radius);
    margin: 24px 0;
    box-shadow: var(--shadow);
}

/* 文章标签 */
.news-article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

.news-article-tags > span {
    color: var(--text-light);
    font-size: 14px;
}

.news-article-tags a {
    display: inline-block;
    background: var(--bg);
    color: var(--text-body);
    font-size: 13px;
    padding: 5px 14px;
    border-radius: 20px;
    text-decoration: none;
    transition: var(--transition);
}

.news-article-tags a:hover {
    background: var(--accent);
    color: #fff;
}

/* 上下篇导航 */
.news-article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.article-nav-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 20px 24px;
    background: var(--bg);
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition);
}

.article-nav-item:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.article-nav-label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 600;
}

.article-nav-label i {
    margin: 0 4px;
}

.article-nav-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.article-nav-item:hover .article-nav-title {
    color: var(--accent);
}

.article-nav-next {
    text-align: right;
}

/* ==================== 相关新闻推荐 ==================== */
.related-news {
    padding: 80px 0;
    background: var(--bg-white);
}

.related-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* ==================== 新闻页响应式 ==================== */
@media (max-width: 992px) {
    .news-featured-card .news-featured-link {
        grid-template-columns: 1fr;
    }

    .news-featured-card .news-featured-img {
        min-height: 240px;
    }

    .news-featured-card .news-featured-body {
        padding: 28px;
    }

    .news-card-link {
        grid-template-columns: 240px 1fr;
    }

    .related-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-article-nav {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .news-filter-section { top: 64px; }

    .news-card-link {
        grid-template-columns: 1fr;
    }

    .news-card-img {
        height: 200px;
    }

    .news-card-body {
        padding: 20px 24px;
    }

    .news-article {
        padding: 32px 24px;
    }

    .news-article-title {
        font-size: 24px;
    }

    .news-article-meta {
        flex-wrap: wrap;
        gap: 12px;
    }

    .related-news-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .news-featured-card .news-featured-body h2 {
        font-size: 20px;
    }

    .news-article-title {
        font-size: 20px;
    }

    .news-article-meta {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
}

/* ==================== 联系我们页 ==================== */

/* 联系信息区 */
.contact-info-section {
    padding: 80px 0;
    background: var(--bg);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 28px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateX(6px);
}

.contact-card-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
}

.contact-card-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 4px;
}

.contact-card-content p {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
}

/* 地图区域 */
.contact-map {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    height: 100%;
    min-height: 400px;
}

.contact-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.map-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(10, 22, 40, 0.85));
    padding: 40px 28px 28px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
}

.map-overlay i {
    font-size: 24px;
    color: var(--accent);
}

.map-overlay span {
    font-size: 15px;
    font-weight: 500;
}

/* 在线留言区 */
.contact-form-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.contact-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form-header {
    text-align: center;
    margin-bottom: 48px;
}

.contact-form-header .section-label {
    justify-content: center;
}

.contact-form-header .section-desc {
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group label i {
    color: var(--accent);
    margin-right: 6px;
    width: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: var(--font-cn);
    color: var(--text-dark);
    background: var(--bg);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    background: var(--bg-white);
    box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

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

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b8ba7' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-submit {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
}

.form-submit .btn {
    min-width: 200px;
    justify-content: center;
}

.form-tip {
    font-size: 13px;
    color: var(--text-light);
}

.form-tip i {
    color: var(--accent);
    margin-right: 4px;
}

/* 合作优势 */
.contact-advantages {
    padding: 80px 0;
    background: var(--bg);
}

.contact-adv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.contact-adv-item {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contact-adv-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.contact-adv-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: rgba(0, 180, 216, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--accent);
    transition: var(--transition);
}

.contact-adv-item:hover .contact-adv-icon {
    background: var(--accent);
    color: #fff;
}

.contact-adv-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

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

/* 联系页响应式 */
@media (max-width: 992px) {
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .contact-map {
        min-height: 300px;
    }

    .contact-adv-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .contact-info-section { padding: 48px 0; }
    .contact-form-section { padding: 48px 0; }
    .contact-advantages { padding: 48px 0; }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-adv-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .contact-adv-item {
        padding: 28px 16px;
    }
}

@media (max-width: 480px) {
    .contact-adv-grid {
        grid-template-columns: 1fr;
    }

    .contact-card {
        padding: 18px 20px;
    }

    .contact-card-icon {
        width: 48px;
        height: 48px;
        font-size: 18px;
    }
}

/* ==================== 案例展示页 ==================== */
.cases-section {
    padding: 60px 0 80px;
    background: var(--bg);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-item {
    text-decoration: none;
    color: inherit;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-white);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

.case-item-img {
    height: 240px;
    overflow: hidden;
}

.case-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.case-item:hover .case-item-img img {
    transform: scale(1.05);
}

.case-item-title {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.5;
    transition: var(--transition);
}

.case-item:hover .case-item-title {
    color: var(--accent);
}

/* 案例详情页 */
.case-article-section {
    padding: 60px 0 80px;
    background: var(--bg);
}

/* 案例页响应式 */
@media (max-width: 992px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .cases-section { padding: 48px 0; }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .case-item-img {
        height: 180px;
    }

    .case-item-title {
        padding: 14px 16px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .case-item-img {
        height: 220px;
    }
}