/* --- 基础设置与变量 --- */
:root {
    --primary: #0f172a;    /* 深海军蓝 - 稳重/工业 */
    --accent: #f97316;     /* 行动橙 - 醒目/点击欲望 */
    --accent-hover: #ea580c;
    --text-main: #334155;
    --text-light: #94a3b8;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --border: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

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

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

.section-title h2 {
    color: var(--primary);
    font-size: 2.2rem;
    margin-bottom: 10px;
}

/* --- 按钮样式 --- */
.btn-primary {
    background-color: var(--accent);
    color: var(--white);
    padding: 12px 24px;
    text-decoration: none;
    font-weight: bold;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 1rem;
    text-align: center;
}

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

.btn-block {
    display: block;
    width: 100%;
}

/* --- 导航栏 --- */
.navbar {
    background-color: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 1px;
}

/* --- 首屏 (Hero) --- */
.hero-section {
    background: linear-gradient(
        to right, 
        rgba(15, 23, 42, 0.85) 30%, /* 左侧文字区加深遮罩 */
        rgba(15, 23, 42, 0.4) 100%
    ), 
    url('/outdoorluggage/2026/03/30/aitupian.png') no-repeat center center/cover;
    padding: 120px 0;
}

.hero-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-text {
    flex: 1;
    min-width: 300px;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3); /* 增加投影提高辨识度 */
    margin-bottom: 25px;
    letter-spacing: -0.02em;
    color: #fff;
}

.hero-text p {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #cbd5e1;
}

.hero-features {
    list-style: none;
}
.hero-features li {
    font-size: 1.1rem;
    margin-bottom: 12px;
    background: rgba(249, 115, 22, 0.1); /* 浅橙色背景块 */
    padding: 5px 15px;
    border-radius: 4px;
    border-left: 4px solid var(--accent); /* 橙色侧边条 */
    display: inline-block; /* 变成块状，更易读 */
    width: auto;
    color: #ffffff;
}
.hero-subtitle {
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 10px;
    display: block;
}

.hero-form-box {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    width: 400px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.hero-form-box h3 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: center;
}

form input, form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
}

form input:focus, form textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* --- 核心产品 (Product) --- */
.product-container {
    display: flex;
    gap: 50px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.product-gallery {
    flex: 1;
    min-width: 300px;
}

.main-img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid var(--border);
}

.thumbnail-row {
    display: flex;
    gap: 10px;
}

.thumb {
    width: calc(25% - 7.5px);
    cursor: pointer;
    border-radius: 4px;
    border: 2px solid transparent;
    transition: 0.3s;
}

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

.product-info {
    flex: 1;
    min-width: 300px;
}

.product-info h3 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.product-desc {
    margin-bottom: 20px;
}

.product-advantages {
    list-style: none;
    margin-bottom: 25px;
}

.product-advantages li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}
.product-advantages li::before {
    content: '■';
    color: var(--accent);
    position: absolute;
    left: 0;
    top: 0;
}

.product-specs {
    width: 100%;
    border-collapse: collapse;
}

.product-specs th, .product-specs td {
    border: 1px solid var(--border);
    padding: 10px;
    text-align: left;
}
.product-specs th {
    background-color: var(--bg-light);
    color: var(--primary);
    width: 35%;
}

/* --- 公司简介 (About) --- */
.about-container {
    display: flex;
    gap: 50px;
    align-items: center;
    flex-wrap: wrap;
}

.about-text {
    flex: 1;
    min-width: 300px;
}
.about-text h2 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 2rem;
}
.about-text p {
    margin-bottom: 15px;
}

.about-image {
    flex: 1;
    min-width: 300px;
}
.about-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* --- 为什么选择我们 (Why Us) --- */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.feature-card img {
    margin-bottom: 20px;
    border-radius: 50%;
}

.feature-card h4 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

/* --- 认证 (Certifications) --- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    justify-items: center;
}
.cert-img {
    max-width: 100%;
    border: 5px solid var(--white);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* --- 合作伙伴 (Partners Carousel) --- */
.carousel-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
}

.carousel-track {
    display: flex;
    overflow-x: hidden; /* 隐藏原生滚动条，靠JS控制 */
    gap: 30px;
    scroll-behavior: smooth; /* 实现平滑滚动 */
    padding: 10px 0;
    flex: 1;
}

.partner-logo {
    flex: 0 0 auto; /* 防止被压缩 */
    filter: grayscale(100%);
    transition: 0.3s;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.partner-logo:hover {
    filter: grayscale(0%);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.carousel-btn {
    background: var(--primary);
    color: var(--white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.carousel-btn:hover {
    background: var(--accent);
}

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

.faq-item {
    background: var(--white);
    border: 1px solid var(--border);
    margin-bottom: 15px;
    border-radius: 4px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    font-weight: bold;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--white);
    transition: background 0.3s;
}

.faq-question:hover {
    background: #f1f5f9;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease;
    background: var(--white);
    padding: 0 20px;
    color: var(--text-main);
}

/* 当激活状态时 */
.faq-item.active .faq-answer {
    max-height: 200px; /* 预设一个足够大的高度 */
    padding: 0 20px 20px 20px;
}

.faq-item.active .icon {
    transform: rotate(45deg); /* 加号变叉号效果 */
    transition: 0.3s;
}

.icon {
    font-size: 1.5rem;
    color: var(--accent);
    transition: 0.3s;
}

/* --- Footer CTA & 页脚 --- */
.footer-cta-bg {
    background: linear-gradient(rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.9)), url('https://via.placeholder.com/1920x600/333333/ffffff?text=Footer+Background') no-repeat center center/cover;
    padding: 80px 0;
    color: var(--white);
}

.footer-cta-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.cta-text {
    flex: 1;
    min-width: 300px;
}
.cta-text h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.footer-form-box {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    width: 400px;
}

.footer-bottom {
    background-color: #020617; /* 最深的蓝色 */
    color: var(--text-light);
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
}

/* --- 响应式调整 (Mobile) --- */
@media (max-width: 768px) {
    .hero-text h1 { font-size: 2.2rem; }
    .hero-form-box, .footer-form-box { width: 100%; }
}
/* --- 生产工艺板块 --- */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 40px;
}
.step {
    background: var(--white);
    padding: 30px;
    border-bottom: 4px solid var(--primary);
    position: relative;
    transition: 0.3s;
}
.step:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}
.step-num {
    font-size: 3rem;
    font-weight: 900;
    color: #e2e8f0;
    position: absolute;
    top: 5px;
    right: 15px;
    line-height: 1;
}
.step h4 {
    position: relative;
    z-index: 1;
    color: var(--primary);
    margin-bottom: 10px;
}

/* --- OEM 定制板块 (深色背景增强对比) --- */
.bg-dark-navy {
    background-color: #020617;
    color: var(--white);
}
.oem-container {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}
.oem-image, .oem-content {
    flex: 1;
    min-width: 320px;
}
.badge {
    background: var(--accent);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 15px;
    display: inline-block;
}
.custom-list {
    list-style: none;
    margin: 25px 0;
}
.custom-list li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}
.custom-list li::before {
    content: '→';
    color: var(--accent);
    margin-right: 10px;
    font-weight: bold;
}

/* --- 数据统计板块 (数字跳动) --- */
.stats-section {
    background: var(--primary);
    padding: 60px 0;
    color: var(--white);
}
.stat-item {
    text-align: center;
}
.counter {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 5px;
}
.stat-item span {
    font-size: 1rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .oem-container { flex-direction: column-reverse; }
}
.navbar {
    background-color: #ffffff;
    padding: 12px 0;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

/* Logo 大小控制 */
#nav-logo {
    height: 50px; /* 您可以根据实际Logo比例微调此高度 */
    width: auto;
    display: block;
}

/* 右侧联系布局 */
.nav-right {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-contact-info {
    display: flex;
    gap: 25px;
}

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

/* 占位小图标样式 */
.contact-icon-img {
    width: 22px;
    height: 22px;
    object-fit: contain;
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.nav-label {
    font-size: 11px;
    color: #94a3b8; /* 浅灰色文字 */
    text-transform: uppercase;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.nav-value {
    font-size: 14px;
    color: #0f172a; /* 深海军蓝 */
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s;
}

.nav-value:hover {
    color: #f97316; /* 悬停变为行动橙 */
}

/* 按钮微调 */
.nav-btn {
    padding: 10px 22px;
    font-size: 14px;
    white-space: nowrap;
}

/* 响应式：在手机端隐藏详细联系方式，防止UI挤压 */
@media (max-width: 992px) {
    .nav-contact-info {
        display: none;
    }
}
li.column {
    list-style: none;
}