/* ============================================
   宸妤智能 - 企业官网样式表
   ============================================ */

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

:root {
    --color-primary-dark: #0a1f3c;
    --color-primary: #14365c;
    --color-secondary: #1e4d7b;
    --color-accent: #c89b3c;
    --color-accent-light: #e0b85c;
    --color-bg: #ffffff;
    --color-bg-light: #f5f7fa;
    --color-bg-gray: #edf1f5;
    --color-text: #1a202c;
    --color-text-secondary: #4a5568;
    --color-text-light: #718096;
    --color-border: #e2e8f0;
    --color-white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(10, 31, 60, 0.06);
    --shadow-md: 0 4px 20px rgba(10, 31, 60, 0.1);
    --shadow-lg: 0 8px 40px rgba(10, 31, 60, 0.15);
    --transition: all 0.3s ease;
    --max-width: 1200px;
    --header-height: 72px;
}

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

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* ===== 通用容器 ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-gray {
    background: var(--color-bg-light);
}

.section-dark {
    background: var(--color-primary-dark);
    color: var(--color-white);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title .en {
    font-size: 0.875rem;
    color: var(--color-accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: block;
}

.section-title h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: "";
    position: absolute;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

.section-title.light h2 {
    color: var(--color-white);
}

.section-title p {
    margin-top: 24px;
    color: var(--color-text-secondary);
    font-size: 1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: linear-gradient(180deg, rgba(10, 31, 60, 0.72) 0%, rgba(10, 31, 60, 0.3) 70%, transparent 100%);
    backdrop-filter: blur(4px);
    box-shadow: none;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    height: 64px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-img {
    height: 44px;
    width: auto;
    display: block;
    flex-shrink: 0;
    transition: var(--transition);
}

/* 透明导航下 logo 反白（适配深色首屏背景） */
.header:not(.scrolled) .logo-img {
    filter: brightness(0) invert(1);
}

.header.scrolled .logo-img {
    filter: none;
}

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

.nav a {
    padding: 8px 20px;
    font-size: 0.95rem;
    color: #fff;
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
}

.nav a:hover,
.nav a.active {
    color: var(--color-accent-light);
}

.header.scrolled .nav a {
    color: var(--color-text);
}

.header.scrolled .nav a:hover,
.header.scrolled .nav a.active {
    color: var(--color-accent);
}

.nav a.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}

.nav-cta {
    margin-left: 16px;
    padding: 10px 24px !important;
    background: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--color-accent) !important;
    color: var(--color-white) !important;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.nav-cta::after {
    display: none !important;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

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

.header.scrolled .menu-toggle span {
    background: var(--color-primary-dark);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: url("../images/hero-shanghai.jpg") center center / cover no-repeat;
    color: var(--color-white);
    margin-top: 0;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(180deg, rgba(10, 31, 60, 0.6) 0%, rgba(10, 31, 60, 0.3) 40%, rgba(10, 31, 60, 0.45) 75%, rgba(10, 31, 60, 0.72) 100%),
        radial-gradient(circle at 50% 40%, rgba(10, 31, 60, 0.15) 0%, transparent 60%);
}

.hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.04;
    background-image: 
        linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 80px 24px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(10, 31, 60, 0.55);
    border: 1px solid rgba(200, 155, 60, 0.5);
    border-radius: 30px;
    font-size: 0.8rem;
    color: var(--color-accent-light);
    letter-spacing: 2px;
    margin-bottom: 24px;
    backdrop-filter: blur(4px);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: 4px;
}

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

.hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.88);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    letter-spacing: 1px;
}

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

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200, 155, 60, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

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

.btn-dark:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hero 数据栏 */
.hero-stats {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    flex-wrap: wrap;
}

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

.hero-stat .num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
}

.hero-stat .num .unit {
    font-size: 1.2rem;
    margin-left: 4px;
}

.hero-stat .label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 8px;
    letter-spacing: 1px;
}

/* ===== 页面内 Hero (子页面) ===== */
.page-hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #0a1f3c url('../images/hero-building.jpg') center center / cover no-repeat;
    color: var(--color-white);
    margin-top: var(--header-height);
    overflow: hidden;
}

/* Hero 背景图：拉伸铺满整个顶部（不变形裁切，整幅铺满） */
.hero-media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    display: block;
}

.page-hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-image:
        linear-gradient(180deg, rgba(10, 31, 60, 0.62) 0%, rgba(10, 31, 60, 0.34) 40%, rgba(10, 31, 60, 0.5) 75%, rgba(10, 31, 60, 0.78) 100%),
        radial-gradient(circle at 20% 30%, rgba(200, 155, 60, 0.10) 0%, transparent 55%);
}

.page-hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.page-hero .hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.05;
    background-image: 
        linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
    background-size: 50px 50px;
}

.page-hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 80px 24px;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5);
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: 4px;
    margin-bottom: 12px;
}

.page-hero .breadcrumb {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

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

.page-hero .breadcrumb .sep {
    margin: 0 8px;
}

/* ===== 特性卡片 ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ===== 关于我们 - 简介 ===== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-intro-text h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 20px;
}

.about-intro-text .accent-line {
    width: 50px;
    height: 3px;
    background: var(--color-accent);
    margin-bottom: 24px;
    border-radius: 2px;
}

.about-intro-text p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-intro-text .highlight {
    color: var(--color-accent);
    font-weight: 600;
}

.about-intro-visual {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    min-height: 400px;
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
}

.about-intro-visual .about-intro-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

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

.about-intro-visual::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 60%, rgba(10, 31, 60, 0.35) 100%);
    pointer-events: none;
}

/* ===== 数据统计 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 30px 20px;
}

.stat-item .num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
}

.stat-item .num .unit {
    font-size: 1.3rem;
}

.stat-item .label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 12px;
    letter-spacing: 1px;
}

/* ===== 核心价值观 ===== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.value-card {
    text-align: center;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    transition: var(--transition);
}

.value-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.value-card .value-num {
    width: 48px;
    height: 48px;
    margin: 0 auto 20px;
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-accent);
}

.value-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
}

.value-card .en-sub {
    font-size: 0.8rem;
    color: var(--color-accent-light);
    letter-spacing: 1px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.value-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

/* ===== 资质证书 ===== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.cert-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 30px 24px;
    text-align: center;
    transition: var(--transition);
}

.cert-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.cert-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--color-bg-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.cert-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 6px;
}

.cert-item p {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ===== 产品服务 ===== */
.product-category {
    margin-bottom: 60px;
}

.product-category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--color-border);
}

.product-category-header .cat-num {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.3rem;
    font-weight: 800;
    flex-shrink: 0;
}

.product-category-header h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.product-category-header .cat-en {
    font-size: 0.8rem;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

.product-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.product-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 24px;
    transition: var(--transition);
    position: relative;
}

.product-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.product-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-item h4::before {
    content: "";
    width: 4px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 2px;
    flex-shrink: 0;
}

.product-item p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.product-item .tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.product-item .tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-bg-gray);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* 软件系统特殊卡片 */
.software-card {
    background: linear-gradient(135deg, #0a1f3c, #1e4d7b);
    color: var(--color-white);
    border: none;
}

.software-card h4 {
    color: var(--color-white);
}

.software-card h4::before {
    background: var(--color-accent);
}

.software-card p {
    color: rgba(255, 255, 255, 0.7);
}

.software-card .tag {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* ===== BMPS调配防错系统流程 ===== */
.bmps-flow {
    margin-top: 48px;
    background: var(--color-white);
    border-radius: 20px;
    padding: 48px 48px 72px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.bmps-flow-header {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
}

.bmps-flow-header .bmps-flow-en {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.bmps-flow-header h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1.3;
}

.bmps-flow-header p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.bmps-timeline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
}

.bmps-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
    z-index: 0;
}

.bmps-step {
    position: relative;
    z-index: 1;
}

.bmps-step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 800;
    margin: 0 auto 16px;
    border: 4px solid var(--color-white);
    box-shadow: 0 0 0 2px var(--color-border);
}

.bmps-step-body {
    background: var(--color-bg-light);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.bmps-step-body:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.bmps-step-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.bmps-step-body p {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    flex-grow: 1;
}

.bmps-step-img {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    aspect-ratio: 3 / 4;
}

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

.bmps-step-img img:hover {
    transform: scale(1.03);
}

/* ===== 设备图片流程网格（前处理/输送/单机/码垛系列） ===== */
.equipment-category {
    background: var(--color-white);
    border-radius: 20px;
    padding: 48px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.equipment-grid .bmps-step-num {
    display: none;
}

.equipment-step-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.equipment-step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.equipment-grid .bmps-step-img {
    aspect-ratio: 4 / 3;
}

.equipment-grid .bmps-step-img.empty {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-gray);
    border: 1px dashed var(--color-border);
}

.equipment-grid .empty-tip {
    font-size: 0.8rem;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

/* 白色容器内的普通产品卡片改为浅灰底，与输送系列视觉统一 */
.equipment-category .product-item {
    background: var(--color-bg-light);
}

/* ===== 智能物流仓储管理 ===== */
.logistics-software {
    margin-top: 48px;
    background: var(--color-white);
    border-radius: 20px;
    padding: 48px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.logistics-software-header {
    margin-bottom: 40px;
}

.logistics-software-en {
    display: block;
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 8px;
    font-weight: 600;
}

.logistics-software-header h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.logistics-software-header p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 700px;
}

.logistics-software-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.logistics-software-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 28px;
    transition: var(--transition);
}

.logistics-software-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.logistics-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.logistics-software-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.logistics-card-img {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-white);
}

.logistics-card-img img {
    width: 100%;
    height: auto;
    display: block;
}

.logistics-card-img-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.logistics-card-img-grid img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    display: block;
}

@media (max-width: 1200px) {
    .logistics-software-grid {
        grid-template-columns: 1fr 1fr;
    }

    .cases-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .logistics-software-grid {
        grid-template-columns: 1fr;
    }

    .logistics-software-card {
        padding: 22px;
    }

    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* ===== 效益展示 ===== */
.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.benefit-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--color-bg);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.benefit-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.benefit-item .benefit-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
}

.benefit-item .benefit-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
}

/* ===== 项目案例 ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.case-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

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

.case-card-header {
    position: relative;
    padding: 28px 24px 22px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    overflow: hidden;
}

.case-card-header .case-num {
    position: absolute;
    top: 10px;
    right: 18px;
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1;
    color: rgba(255, 255, 255, 0.18);
    pointer-events: none;
}

.case-card-header .case-type {
    position: relative;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #fff;
}

.case-card-body {
    padding: 20px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-card-body p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    flex: 1;
}

.case-card-body .case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.case-card-body .tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-bg-gray);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* ===== 案例视频区（封面 + 悬停预览 + 点击弹窗） ===== */
.case-media {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    cursor: pointer;
}

.case-media img.case-cover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity 0.4s ease, transform 0.6s ease;
}

.case-media video.case-preview {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.case-card:hover .case-media video.case-preview {
    opacity: 1;
}

.case-card:hover .case-media img.case-cover {
    transform: scale(1.04);
}

.case-media .case-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(200, 155, 60, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, background 0.3s ease;
    z-index: 2;
}

.case-media .case-play::before {
    content: "";
    width: 0;
    height: 0;
    border-left: 17px solid #fff;
    border-top: 11px solid transparent;
    border-bottom: 11px solid transparent;
    margin-left: 4px;
}

.case-card:hover .case-media .case-play {
    transform: translate(-50%, -50%) scale(1.12);
    background: var(--color-accent-light);
}

.case-media .case-badge {
    position: absolute;
    left: 12px;
    bottom: 12px;
    padding: 4px 10px;
    background: rgba(10, 31, 60, 0.75);
    color: #fff;
    font-size: 0.7rem;
    border-radius: 4px;
    letter-spacing: 0.5px;
    z-index: 2;
}

.case-media.case-media-empty img.case-cover,
.case-media.case-media-empty .case-play,
.case-media.case-media-empty .case-badge {
    display: none;
}

.case-media.case-media-empty::after {
    content: "视频待补充";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* ===== 视频弹窗 ===== */
.video-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.video-modal.is-open {
    display: flex;
}

.video-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(6, 16, 30, 0.88);
}

.video-modal-inner {
    position: relative;
    width: min(960px, 100%);
    background: #0a1f3c;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55);
}

.video-modal-inner video {
    width: 100%;
    max-height: 74vh;
    display: block;
    background: #000;
}

.video-modal-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 20px;
    color: #fff;
}

.video-modal-title {
    font-size: 0.95rem;
    font-weight: 600;
}

.video-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.55);
    color: #fff;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
}

.video-modal-close:hover {
    background: var(--color-accent);
}

body.modal-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .case-media video.case-preview {
        display: none;
    }
}

/* ===== 合作客户 ===== */
.clients-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.client-badge {
    padding: 12px 28px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition);
}

.client-badge:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* ===== 荣誉证书展示 ===== */
.certs-showcase {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.cert-row {
    display: grid;
    gap: 30px;
}

.cert-row-top {
    grid-template-columns: repeat(2, minmax(0, 360px));
    justify-content: center;
}

.cert-row-bottom {
    grid-template-columns: repeat(3, 1fr);
}

.cert-frame {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.cert-frame:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.cert-frame img {
    border-radius: 8px;
    margin: 0 auto;
    max-height: 320px;
    width: 100%;
    object-fit: contain;
}

.cert-placeholder {
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-gray);
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    color: var(--color-text-light);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.cert-caption {
    margin-top: 14px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 600;
}

/* ===== 联系我们 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.contact-info .accent-line {
    width: 50px;
    height: 3px;
    background: var(--color-accent);
    margin-bottom: 30px;
    border-radius: 2px;
}

.contact-info p {
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    color: var(--color-primary);
}

.contact-item-text .label {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.contact-item-text .value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

/* 联系表单 */
.contact-form {
    background: var(--color-bg-light);
    border-radius: 16px;
    padding: 40px;
}

.contact-form h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.1);
}

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

.form-submit {
    width: 100%;
    padding: 14px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.form-submit:hover {
    background: var(--color-accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.form-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 表单提交结果提示 */
.form-tip {
    display: none;
    margin-bottom: 14px;
    padding: 11px 14px;
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.form-tip.is-visible {
    display: block;
}

.form-tip.is-success {
    background: rgba(39, 174, 96, 0.1);
    border: 1px solid rgba(39, 174, 96, 0.35);
    color: #1e7e46;
}

.form-tip.is-error {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.35);
    color: #b03024;
}

/* 地图区域 */
.map-section {
    background: var(--color-bg-light);
    padding: 60px 0;
}

.map-container {
    position: relative;
    height: 420px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* ===== 公司地图（腾讯地图 GL JS） ===== */
#company-map {
    width: 100%;
    height: 100%;
    background: var(--color-bg-light);
}

/* 地图未加载成功时的降级信息卡（保证任何情况下都不空白） */
.map-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
}

.map-fallback.is-hidden {
    display: none;
}

.map-fallback h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.map-fallback p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 18px;
}

.map-fallback-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.map-fallback .btn {
    padding: 10px 22px;
    font-size: 0.9rem;
}

/* 地图气泡窗口 */
.map-infowin {
    padding: 10px 14px;
    font-size: 0.88rem;
    line-height: 1.7;
    color: #333;
    min-width: 200px;
}

.map-infowin strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.map-infowin a {
    display: inline-block;
    margin-top: 6px;
    color: var(--color-accent);
    font-weight: 600;
}

@media (max-width: 768px) {
    .map-container {
        height: 340px;
    }
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-top: 20px;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: 20px;
    font-weight: 600;
}

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

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-accent-light);
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom .beian-link {
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-bottom .beian-link:hover {
    color: #ffffff;
}

/* ===== 滚动动画 ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .about-intro {
        grid-template-columns: 1fr;
    }

    .about-intro-visual {
        min-height: 280px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .certs-showcase,
    .cert-row {
        gap: 20px;
    }

    .cert-row-bottom {
        grid-template-columns: repeat(3, 1fr);
    }

    .bmps-flow-header {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .bmps-timeline {
        grid-template-columns: repeat(3, 1fr);
    }

    .bmps-timeline::before {
        display: none;
    }

    .equipment-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-hero {
        min-height: 380px;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-white);
        flex-direction: column;
        align-items: stretch;
        padding: 20px;
        gap: 0;
        transform: translateY(-150%);
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
        height: auto;
    }

    .nav.active {
        transform: translateY(0);
    }

    .nav a {
        padding: 14px 20px;
        border-bottom: 1px solid var(--color-border);
        color: var(--color-text);
    }

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

    .nav-cta {
        margin: 16px 0 0;
        text-align: center;
        color: #fff !important;
    }

    .menu-toggle {
        display: flex;
    }

    .logo-img {
        height: 34px;
    }

    .certs-showcase,
    .cert-row {
        gap: 16px;
    }

    .cert-row-top,
    .cert-row-bottom {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .hero-stats {
        gap: 30px;
    }

    .hero-stat .num {
        font-size: 2rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 1.5rem;
    }

    .page-hero {
        min-height: 280px;
    }

    .page-hero-content {
        padding: 56px 24px;
    }

    .page-hero h1 {
        font-size: 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-brand .logo-img {
        height: 32px;
    }

    .bmps-flow {
        padding: 32px 20px 48px;
    }

    .equipment-category {
        padding: 32px 20px;
    }

    .logistics-software {
        padding: 32px 20px;
    }

    .bmps-timeline {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .bmps-step {
        display: flex;
        gap: 16px;
        text-align: left;
    }

    .bmps-step-num {
        margin: 0;
        flex-shrink: 0;
    }

    .bmps-step-body {
        text-align: left;
        flex-direction: row;
        align-items: center;
        gap: 16px;
    }

    .bmps-step-body p {
        margin-bottom: 0;
    }

    .bmps-step-img {
        width: 100px;
        flex-shrink: 0;
        aspect-ratio: 3 / 4;
    }

    .equipment-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .equipment-grid .bmps-step {
        display: block;
        text-align: center;
    }

    .equipment-grid .bmps-step-num {
        display: none;
    }

    .equipment-grid .bmps-step-body {
        text-align: center;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .equipment-grid .bmps-step-body p {
        margin-bottom: 16px;
    }

    .equipment-grid .bmps-step-img {
        width: 100%;
        flex-shrink: 0;
        aspect-ratio: 4 / 3;
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 28px;
    }

    .hero h1 {
        font-size: 1.6rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .contact-form {
        padding: 24px;
    }
}