/* ===== 全局重置与基础 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a5276;
    --primary-dark: #0e3a56;
    --primary-light: #2980b9;
    --accent: #e67e22;
    --accent-hover: #d35400;
    --text: #2d3436;
    --text-light: #636e72;
    --text-white: #ffffff;
    --bg: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #ecf0f1;
    --border: #dde1e3;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
    --radius: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
    --card-bg: #ffffff;
    --footer-bg: #1a1a2e;
}

/* 暗色模式 */
[data-theme="dark"] {
    --text: #e0e0e0;
    --text-light: #a0a8b0;
    --text-white: #ffffff;
    --bg: #121820;
    --bg-light: #1a2230;
    --bg-gray: #1e2a38;
    --border: #2a3a4a;
    --shadow: 0 4px 20px rgba(0,0,0,0.25);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.4);
    --card-bg: #1a2230;
    --footer-bg: #0d1117;
}

[data-theme="dark"] .navbar {
    background: rgba(18,24,32,0.98);
}

[data-theme="dark"] .product-card,
[data-theme="dark"] .case-card,
[data-theme="dark"] .news-card,
[data-theme="dark"] .stat-item,
[data-theme="dark"] .feature-item,
[data-theme="dark"] .cert-item,
[data-theme="dark"] .contact-form,
[data-theme="dark"] .timeline-content,
[data-theme="dark"] .partner-logo,
[data-theme="dark"] .product-list-item {
    background: var(--card-bg);
}

[data-theme="dark"] .product-img,
[data-theme="dark"] .product-list-img,
[data-theme="dark"] .about-img {
    background: linear-gradient(135deg, #1a2a3a, #243444);
}

[data-theme="dark"] .product-img .tag {
    background: var(--accent);
}

[data-theme="dark"] .section-header h2 {
    color: #e0e0e0;
}

[data-theme="dark"] .product-info h3,
[data-theme="dark"] .feature-item h3,
[data-theme="dark"] .case-info h3,
[data-theme="dark"] .about-text h3,
[data-theme="dark"] .timeline-content h4,
[data-theme="dark"] .contact-item h4,
[data-theme="dark"] .contact-form h3,
[data-theme="dark"] .product-list-info h3 {
    color: #b0d0e8;
}

[data-theme="dark"] .stat-number {
    color: #5dade2;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text);
}

[data-theme="dark"] .nav-menu a {
    color: var(--text);
}

[data-theme="dark"] .nav-menu a:hover,
[data-theme="dark"] .nav-menu a.active {
    color: #5dade2;
    background: rgba(93,173,226,0.1);
}

[data-theme="dark"] .page-loader {
    background: var(--bg);
}

[data-theme="dark"] .logo-text h1 {
    color: #b0d0e8;
}

[data-theme="dark"] .map-placeholder {
    background: linear-gradient(135deg, #1a2a3a, #243444);
    border-color: var(--border);
}

[data-theme="dark"] .map-placeholder:hover {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, #1e3040, #283848);
}

[data-theme="dark"] .stats-with-bg .stat-item {
    background: rgba(26,34,48,0.95);
}

[data-theme="dark"] .footer-factory-strip img {
    filter: brightness(0.35);
}

[data-theme="dark"] .footer-factory-strip img:hover {
    filter: brightness(0.6);
}

[data-theme="dark"] .hero-product-main {
    border-color: rgba(93,173,226,0.25);
}

[data-theme="dark"] .hero-product-thumbs img {
    border-color: rgba(93,173,226,0.2);
}

[data-theme="dark"] .process-img {
    border-color: var(--border);
}

[data-theme="dark"] .partner-thumb {
    border-color: var(--border);
}

[data-theme="dark"] .process-num {
    box-shadow: 0 4px 15px rgba(93,173,226,0.2);
}

/* 暗色模式切换按钮 */
.theme-toggle {
    background: none;
    border: 1px solid rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.8);
    cursor: pointer;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 13px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--primary-light));
    z-index: 10000;
    transition: width 0.1s linear;
    width: 0;
}

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

/* 无障碍：跳转到主内容 */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    z-index: 10001;
    font-size: 14px;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

/* 焦点可见性 */
*:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

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

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

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

ul, ol {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 顶部通栏 ===== */
.top-bar {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.8);
    font-size: 13px;
    padding: 6px 0;
}

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

.top-bar a {
    color: rgba(255,255,255,0.8);
}

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

.top-bar-contact span {
    margin-right: 20px;
}

/* ===== 导航栏 ===== */
.navbar {
    background: var(--bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 18px;
}

.logo-text h1 {
    font-size: 20px;
    color: var(--primary);
    line-height: 1.2;
}

.logo-text p {
    font-size: 11px;
    color: var(--text-light);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: 5px;
}

.nav-menu a {
    padding: 8px 18px;
    color: var(--text);
    font-size: 15px;
    border-radius: 4px;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
    background: rgba(26, 82, 118, 0.06);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 40px;
    height: 40px;
    position: relative;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    margin: 5px auto;
    transition: var(--transition);
    border-radius: 2px;
}

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

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

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

/* ===== Hero Banner ===== */
.hero {
    background: linear-gradient(135deg, rgba(10,35,60,0.82) 0%, rgba(26,82,118,0.78) 50%, rgba(41,128,185,0.72) 100%), url('../images/hero-bg.jpg') center/cover no-repeat;
    color: var(--text-white);
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
    animation: heroFloat 20s ease-in-out infinite alternate;
}

@keyframes heroFloat {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-30px, 30px) rotate(10deg); }
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 13px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.2);
    letter-spacing: 1px;
}

.hero-badge .dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #2ecc71;
    border-radius: 50%;
    margin-right: 8px;
    animation: dotPulse 1.5s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.02);
    border-radius: 50%;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 650px;
}

.hero h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero h2 span {
    color: var(--accent);
}

.hero p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 35px;
    line-height: 1.8;
}

.hero-btns {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(230, 126, 34, 0.3);
}

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

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

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

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

/* ===== 页面内Banner ===== */
.page-banner {
    background: linear-gradient(135deg, rgba(10,35,60,0.85), rgba(26,82,118,0.8)), url('../images/hero-bg.jpg') center/cover no-repeat;
    color: white;
    padding: 60px 0 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.04);
    border-radius: 50%;
    animation: heroFloat 15s ease-in-out infinite alternate;
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
}

.page-banner .container {
    position: relative;
    z-index: 1;
}

.page-banner h2 {
    font-size: 32px;
    margin-bottom: 10px;
}

.breadcrumb {
    font-size: 14px;
    opacity: 0.8;
}

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

/* ===== 通用Section ===== */
.section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-light);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.section-header .line {
    width: 50px;
    height: 3px;
    background: var(--accent);
    margin: 15px auto 0;
    border-radius: 2px;
}

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

/* ===== 统计数据 ===== */
.stats {
    background: var(--bg-light);
    padding: 50px 0;
}

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

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.4s;
}

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

.stat-item:hover::after {
    transform: scaleX(1);
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-number span {
    font-size: 20px;
    color: var(--accent);
}

.stat-label {
    color: var(--text-light);
    margin-top: 8px;
    font-size: 15px;
}

/* ===== 产品卡片 ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

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

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.product-card:hover .product-img img {
    transform: scale(1.08);
}

.product-img img {
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.product-img {
    height: 220px;
    background: linear-gradient(135deg, #e8f4f8, #d4e6f1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-img .placeholder-icon {
    font-size: 60px;
    opacity: 0.3;
}

.product-img .tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.product-info {
    padding: 22px;
}

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

.product-info p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 15px;
}

.product-info .more {
    color: var(--accent);
    font-size: 14px;
    font-weight: 500;
}

.product-info .more:hover {
    color: var(--accent-hover);
}

/* ===== 产品详情列表 ===== */
.products-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

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

.product-list-item:hover {
    box-shadow: var(--shadow-hover);
}

.product-list-img {
    width: 240px;
    min-height: 200px;
    background: linear-gradient(135deg, #e8f4f8, #d4e6f1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.product-list-img .placeholder-icon {
    font-size: 50px;
    opacity: 0.3;
}

.product-list-info {
    padding: 22px;
    flex: 1;
}

.product-list-info h3 {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 10px;
}

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

.product-params {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.product-params span {
    background: var(--bg-light);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-light);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.product-params span:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ===== 优势/特色 ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.feature-item {
    text-align: center;
    padding: 35px 20px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 65px;
    height: 65px;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
}

.feature-item h3 {
    font-size: 17px;
    margin-bottom: 10px;
    color: var(--primary);
}

.feature-item p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
}

/* ===== 案例 ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.case-img {
    height: 200px;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 500;
}

.case-img-label {
    font-size: 15px;
    opacity: 0.9;
    letter-spacing: 1px;
}

.case-info {
    padding: 22px;
}

.case-info h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.case-info p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 10px;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #999;
}

/* ===== 新闻列表 ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

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

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

.news-thumb {
    width: 180px;
    flex-shrink: 0;
    overflow: hidden;
}

.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.news-card:hover .news-thumb img {
    transform: scale(1.08);
}

.news-date {
    width: 90px;
    background: var(--primary);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 15px;
}

.news-date .day {
    font-size: 30px;
    font-weight: 700;
    line-height: 1;
}

.news-date .month {
    font-size: 13px;
    margin-top: 4px;
    opacity: 0.8;
}

.news-content {
    padding: 18px 22px;
    flex: 1;
}

.news-content h3 {
    font-size: 16px;
    margin-bottom: 8px;
    line-height: 1.5;
}

.news-content h3:hover {
    color: var(--primary);
}

.news-content p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-tag {
    display: inline-block;
    padding: 2px 8px;
    font-size: 12px;
    border-radius: 3px;
    margin-bottom: 6px;
}

.news-tag.company {
    background: #e8f4f8;
    color: var(--primary);
}

.news-tag.industry {
    background: #fef5e7;
    color: var(--accent);
}

/* ===== 联系我们 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
}

.contact-form {
    background: white;
    padding: 35px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 15px;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-light);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.12);
    background: var(--bg);
}

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

/* ===== CTA横幅 ===== */
.cta-banner {
    background: linear-gradient(135deg, rgba(26,82,118,0.88), rgba(41,128,185,0.85)), url('../images/factory.jpg') center/cover no-repeat;
    color: white;
    padding: 60px 0;
    text-align: center;
}

.cta-banner h2 {
    font-size: 30px;
    margin-bottom: 15px;
}

.cta-banner p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 30px;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer h4 {
    color: white;
    font-size: 17px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.footer-about p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.footer-links a {
    display: block;
    padding: 5px 0;
    font-size: 14px;
    color: rgba(255,255,255,0.6);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-contact p {
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
}

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

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

/* ===== 关于我们页面 ===== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 26px;
    color: var(--primary);
    margin-bottom: 15px;
}

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

.about-img {
    height: 350px;
    background: linear-gradient(135deg, #e8f4f8, #d4e6f1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--text-light);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin-bottom: 30px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
    text-align: right;
}

.timeline-dot {
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 20px;
    z-index: 1;
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--accent);
}

.timeline-content {
    width: 45%;
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.timeline-content h4 {
    color: var(--primary);
    margin-bottom: 5px;
}

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

/* ===== 资质证书 ===== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cert-item {
    background: var(--card-bg);
    padding: 30px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.cert-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.cert-item::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, rgba(26,82,118,0.08), rgba(41,128,185,0.04));
    border-radius: 50%;
    z-index: 0;
}

.cert-item h4 {
    font-size: 15px;
    color: var(--primary);
    margin-bottom: 5px;
}

.cert-item p {
    color: var(--text-light);
    font-size: 13px;
}

/* ===== 地图占位 ===== */
.map-placeholder {
    height: 300px;
    background: linear-gradient(135deg, #e8ecef 0%, #dde4e9 50%, #e8ecef 100%);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 16px;
    margin-top: 40px;
    border: 2px dashed var(--border);
    transition: var(--transition);
}

.map-placeholder:hover {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, #d4e6f1 0%, #e8f4f8 50%, #d4e6f1 100%);
}

/* ===== 合作伙伴Logo滚动 ===== */
.partners-scroll {
    overflow: hidden;
    padding: 20px 0;
    position: relative;
}

.partners-scroll::before,
.partners-scroll::after {
    content: '';
    position: absolute;
    top: 0;
    width: 80px;
    height: 100%;
    z-index: 2;
}

.partners-scroll::before {
    left: 0;
    background: linear-gradient(90deg, var(--bg-light), transparent);
}

.partners-scroll::after {
    right: 0;
    background: linear-gradient(-90deg, var(--bg-light), transparent);
}

.partners-track {
    display: flex;
    gap: 50px;
    animation: scrollPartners 20s linear infinite;
    width: max-content;
}

@keyframes scrollPartners {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.partner-logo {
    height: 55px;
    padding: 10px 25px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-light);
    white-space: nowrap;
    font-weight: 500;
    flex-shrink: 0;
    transition: var(--transition);
}

.partner-logo .partner-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
}

.partner-logo:hover {
    color: var(--primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

/* ===== 服务流程 ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    position: relative;
}

.process-step {
    text-align: center;
    padding: 30px 15px;
    position: relative;
}

.process-step::after {
    content: '→';
    position: absolute;
    right: -10px;
    top: 45px;
    font-size: 20px;
    color: var(--accent);
    font-weight: bold;
}

.process-step:last-child::after {
    display: none;
}

.process-num {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 15px;
    box-shadow: 0 4px 15px rgba(26, 82, 118, 0.3);
}

.process-step h4 {
    font-size: 15px;
    color: var(--primary);
    margin-bottom: 6px;
}

.process-step p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
}

/* ===== 回到顶部 ===== */

/* ===== 客户评价 ===== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--card-bg, white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.testimonial-card::before {
    content: '\201C';
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 60px;
    color: var(--primary);
    opacity: 0.1;
    font-family: Georgia, serif;
    line-height: 1;
}

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

.testimonial-stars {
    color: #f1c40f;
    font-size: 16px;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.testimonial-text {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}

.testimonial-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 16px;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.testimonial-author strong {
    display: block;
    font-size: 14px;
    color: var(--text);
}

.testimonial-author span {
    font-size: 12px;
    color: var(--text-light);
}

/* ===== FAQ 手风琴 ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg, white);
    border-radius: var(--radius);
    margin-bottom: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 18px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-family: inherit;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question .faq-icon {
    font-size: 20px;
    transition: transform 0.3s;
    color: var(--accent);
    flex-shrink: 0;
    margin-left: 15px;
}

.faq-item.active .faq-question {
    color: var(--primary);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
}

.faq-answer-inner {
    padding: 0 24px 18px;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

.back-to-top.show {
    display: flex;
}

/* ===== Hero产品展示 ===== */
.hero-layout {
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-layout .hero-content {
    flex: 1;
}

.hero-product-showcase {
    flex: 0 0 380px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hero-product-main {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
    border: 3px solid rgba(255,255,255,0.15);
}

.hero-product-main img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.hero-product-thumbs {
    display: flex;
    gap: 10px;
}

.hero-product-thumbs img {
    flex: 1;
    height: 80px;
    object-fit: cover;
    border-radius: 6px;
    border: 2px solid rgba(255,255,255,0.15);
    cursor: pointer;
    transition: var(--transition);
}

.hero-product-thumbs img:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

/* ===== 统计区背景图 ===== */
.stats-with-bg {
    background: linear-gradient(135deg, rgba(10,35,60,0.85) 0%, rgba(26,82,118,0.8) 100%), url('../images/factory.jpg') center/cover no-repeat;
}

.stats-with-bg .stat-item {
    background: rgba(255,255,255,0.95);
    position: relative;
    overflow: hidden;
}

.stat-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.08;
    transition: opacity 0.4s;
    pointer-events: none;
}

.stat-item:hover .stat-bg-img {
    opacity: 0.15;
}

/* ===== 服务流程配图 ===== */
.process-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 12px;
    border: 3px solid var(--bg-light);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.process-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.process-step:hover .process-img img {
    transform: scale(1.15);
}

.process-step:hover {
    background: var(--bg-light, #f8f9fa);
    border-radius: var(--radius);
}

/* ===== 页脚产品图片带 ===== */
.footer-factory-strip {
    display: flex;
    height: 120px;
    overflow: hidden;
}

.footer-factory-strip img {
    flex: 1;
    object-fit: cover;
    filter: brightness(0.6);
    transition: filter 0.4s;
    min-width: 0;
}

.footer-factory-strip img:hover {
    filter: brightness(0.85);
}

/* ===== 合作伙伴缩略图 ===== */
.partner-thumb {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 10px;
    border: 2px solid var(--bg-light);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .stats-grid,
    .features-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-intro {
        grid-template-columns: 1fr;
    }

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

    .hero-product-showcase {
        flex: 0 0 300px;
    }

    .hero-product-main img {
        height: 200px;
    }

    .hero-product-thumbs img {
        height: 60px;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }

    .navbar .container {
        height: 60px;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 15px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        gap: 0;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu a {
        padding: 12px 15px;
        border-bottom: 1px solid var(--bg-light);
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        padding: 60px 0 50px;
    }

    .hero-layout {
        flex-direction: column;
        gap: 30px;
    }

    .hero-product-showcase {
        flex: none;
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

    .hero-product-main img {
        height: 180px;
    }

    .hero-product-thumbs img {
        height: 60px;
    }

    .hero h2 {
        font-size: 28px;
    }

    .hero p {
        font-size: 15px;
    }

    .section {
        padding: 50px 0;
    }

    .section-header h2 {
        font-size: 24px;
    }

    .products-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .products-list {
        grid-template-columns: 1fr;
    }

    .product-list-item {
        flex-direction: column;
    }

    .product-list-img {
        width: 100%;
        height: 180px;
    }

    .stats-grid,
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .news-thumb {
        width: 120px;
    }

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

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

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

    .footer-factory-strip {
        height: 80px;
    }

    .process-img {
        width: 60px;
        height: 60px;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(odd) {
        flex-direction: row;
        text-align: left;
        padding-left: 50px;
    }

    .timeline-dot {
        left: 20px;
    }

    .timeline-content {
        width: 100%;
    }

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

@media (max-width: 480px) {
    .stats-grid,
    .features-grid,
    .cert-grid {
        grid-template-columns: 1fr;
    }

    .hero-btns {
        flex-direction: column;
    }

    .btn {
        text-align: center;
    }

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

    .hero-product-showcase {
        max-width: 100%;
    }

    .hero-product-main img {
        height: 150px;
    }

    .hero-product-thumbs img {
        height: 50px;
    }

    .footer-factory-strip {
        height: 60px;
    }

    .footer-factory-strip img:nth-child(4) {
        display: none;
    }
}

/* ===== 移动端底部操作栏 ===== */
.mobile-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-bg, white);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 997;
    padding: 8px 0;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
}

.mobile-bottom-bar .bar-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.mobile-bottom-bar a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    font-size: 11px;
    color: var(--text-light);
    padding: 4px 8px;
}

.mobile-bottom-bar a.bar-active {
    color: var(--primary);
}

.mobile-bottom-bar .bar-icon {
    font-size: 18px;
}

.mobile-bottom-bar .bar-call {
    background: var(--accent);
    color: white !important;
    border-radius: 20px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 500;
    flex-direction: row;
    gap: 5px;
}

@media (max-width: 768px) {
    .mobile-bottom-bar {
        display: block;
    }

    .float-contact {
        bottom: 70px;
    }

    .back-to-top.show {
        bottom: 70px;
    }

    body {
        padding-bottom: 60px;
    }
}

/* ===== 浮动咨询按钮 ===== */
.float-contact {
    position: fixed;
    right: 25px;
    bottom: 90px;
    z-index: 998;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.float-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
    border: none;
    position: relative;
}

.float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0,0,0,0.3);
}

.float-btn.phone {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.float-btn.qq {
    background: linear-gradient(135deg, #2b7ce9, #52a5f5);
}

.float-btn .tooltip {
    position: absolute;
    right: 62px;
    white-space: nowrap;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.float-btn .tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: rgba(0,0,0,0.8);
}

.float-btn:hover .tooltip {
    opacity: 1;
}

/* ===== 页面加载动画 ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.4s, visibility 0.4s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 45px;
    height: 45px;
    border: 4px solid var(--bg-gray);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== Hero 粒子背景 ===== */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.hero-particles .particle {
    position: absolute;
    background: rgba(255,255,255,0.06);
    border-radius: 50%;
    animation: floatUp linear infinite;
}

@keyframes floatUp {
    0% {
        transform: translateY(100%) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) scale(1);
        opacity: 0;
    }
}

/* ===== 产品卡hover光效 ===== */
.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
    transition: left 0.6s;
    z-index: 1;
}

.product-card {
    position: relative;
    overflow: hidden;
}

.product-card:hover::before {
    left: 100%;
}

/* ===== 导航高亮滑块 ===== */
.nav-menu a {
    position: relative;
    overflow: hidden;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s, left 0.3s;
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    width: 60%;
    left: 20%;
}

/* ===== Feature卡片渐变边框 ===== */
.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius) var(--radius) 0 0;
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-item:hover::before {
    opacity: 1;
}

/* ===== CTA Banner 脉冲动画 ===== */
.cta-banner .btn-primary {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(230, 126, 34, 0.4); }
    50% { box-shadow: 0 0 0 12px rgba(230, 126, 34, 0); }
}

/* ===== 新闻卡片hover效果 ===== */
.news-card .news-date {
    transition: var(--transition);
}

.news-card:hover .news-date {
    background: var(--accent);
}

.news-card:hover .news-content h3 {
    color: var(--primary);
}

/* ===== 案例卡片遮罩 ===== */
.case-img {
    position: relative;
    overflow: hidden;
}

.case-img::after {
    content: '查看详情 →';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26,82,118,0.7), rgba(41,128,185,0.6));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 2px;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(2px);
}

.case-card:hover .case-img::after {
    opacity: 1;
}

/* ===== 时间线动画 ===== */
.timeline-item .timeline-content {
    transition: transform 0.3s;
}

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

/* ===== 表单Focus动效 ===== */

/* ===== 数字计数动画 ===== */
@keyframes countIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-item.animated .stat-number {
    animation: countIn 0.6s ease-out forwards;
}

/* ===== 产品列表图片悬停 ===== */
.product-list-img img {
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.product-list-item:hover .product-list-img img {
    transform: scale(1.06);
}

/* ===== 图片懒加载占位 ===== */
.img-placeholder {
    background: linear-gradient(135deg, #e8f4f8 0%, #d4e6f1 50%, #e8f4f8 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== 动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }

/* ===== 打字效果 ===== */
.typewriter {
    overflow: hidden;
    border-right: 3px solid var(--accent);
    white-space: nowrap;
    animation: typing 3s steps(20) 1s forwards, blink 0.8s step-end infinite;
    width: 0;
}

@keyframes typing {
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

/* ===== 响应式补充 ===== */
@media (max-width: 1024px) {
    .process-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 0;
    }
    .process-step {
        padding: 20px 8px;
    }
    .process-img {
        width: 55px;
        height: 55px;
    }
    .process-step::after {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .float-contact {
        right: 15px;
        bottom: 75px;
    }

    .float-btn {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }

    .float-btn .tooltip {
        display: none;
    }

    .process-grid {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }

    .process-step::after {
        display: none;
    }

    .hero-badge {
        font-size: 12px;
        padding: 5px 14px;
    }
}

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