/* 全局样式变量 */
:root {
    --primary-color: #c6f24e;        /* 电光绿（品牌强调色） */
    --primary-dark: #aadb38;
    --primary-light: rgba(198, 242, 78, 0.16);
    --secondary-color: #f2f6f4;      /* 浅色标题文字 */
    --accent-color: #8be04d;         /* 渐变用绿色 */
    --accent-teal: #5ec6e8;          /* 冷色"液体"点缀 */
    --text-color: #dfe6e2;
    --text-light: #93a39c;
    --background-color: #0b100f;     /* 主背景近黑 */
    --background-light: #111816;     /* 次级深色背景 */
    --card-bg: #151c19;              /* 卡片底色 */
    --card-border: #243029;          /* 卡片描边 */
    --footer-bg: #070b0a;
    --success-color: #c6f24e;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --border-radius: 12px;
    --box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
    --box-shadow-hover: 0 20px 45px rgba(0, 0, 0, 0.6);
    --transition: all 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    background: var(--background-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 通用样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

/* 版块底色交替，增强层次 */
.products {
    background: var(--background-color);
}

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

.about {
    background: var(--background-color);
}

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

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--secondary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 64px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 1rem auto;
    border-radius: 2px;
}

/* 语言切换按钮 */
.language-switch {
    position: fixed;
    top: 1rem;
    right: 2rem;
    z-index: 1001;
    background: rgba(21, 28, 25, 0.9);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(8px);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-switch button {
    color: var(--text-color);
}

.language-switch button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
}

.language-switch button.active {
    background: var(--primary-light);
    color: var(--primary-color);
}

/* 导航栏样式 */
.main-nav {
    position: fixed;
    width: 100%;
    background: rgba(11, 16, 15, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}

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

.logo-img {
    height: 40px;
    transition: var(--transition);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

/* 主横幅区域样式 */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(6, 10, 9, 0.94) 0%, rgba(9, 18, 15, 0.82) 45%, rgba(17, 38, 28, 0.62) 100%);
    z-index: 1;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
    padding: 120px 0;
}

.hero-text {
    max-width: 820px;
    margin: 0 auto;
}

.hero-eyebrow {
    display: inline-block;
    padding: 0.4rem 1.1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    color: #eafdc9;
    background: rgba(198, 242, 78, 0.14);
    border: 1px solid rgba(198, 242, 78, 0.45);
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2.5rem;
}

.hero-pills .pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.92);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    backdrop-filter: blur(6px);
}

.hero-pills .pill i {
    color: var(--accent-color);
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.4rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    text-decoration: none;
    animation: heroBounce 2s infinite;
    transition: var(--transition);
}

.hero-scroll:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

@keyframes heroBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

.hero-text h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-text p {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: #0b100f;
    border: none;
    font-weight: 600;
    box-shadow: 0 8px 22px rgba(198, 242, 78, 0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(198, 242, 78, 0.4);
}

.btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.8);
    color: white;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: var(--card-bg);
    color: var(--secondary-color);
    border-color: white;
    transform: translateY(-2px);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* 产品服务区域样式 */
.product-grid {
    display: grid;
    /* 4 张卡：大屏一行 4 个，中屏 2×2，小屏单列——避免出现 3+1 的孤行 */
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

@media (max-width: 1100px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.product-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
    z-index: 2;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

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

/* 统一图片画框：固定比例，图片完整显示（不裁切），
   留白处用同一张图放大模糊后填充，避免死板的黑边 */
.card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--background-light);
    border-bottom: 1px solid var(--card-border);
}

.card-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* 模糊衬底：铺满画框 */
.card-media .media-blur {
    object-fit: cover;
    transform: scale(1.3);
    filter: blur(26px) brightness(0.45) saturate(1.2);
    z-index: 0;
}

/* 主图：完整显示，内容不丢 */
.card-media .media-main {
    object-fit: contain;
    z-index: 1;
    padding: 6px;
    transition: transform 0.4s ease;
}

.product-card:hover .media-main,
.application-card:hover .media-main {
    transform: scale(1.05);
}

.product-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-card h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.product-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.learn-more {
    color: var(--primary-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: var(--transition);
    margin-top: auto;
}

.learn-more:hover {
    gap: 0.75rem;
    color: var(--secondary-color);
}

/* 其他业务子栏目样式 */
.other-business {
    margin-top: 4rem;
}

.other-business .other-title {
    text-align: center;
    font-size: 1.4rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.other-business .other-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.other-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.other-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: var(--transition);
}

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

.other-card i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

/* 其他业务的缩略图：同样用画框，比 96px 方图更能显示内容 */
.other-media {
    width: 150px;
    flex-shrink: 0;
    border-radius: 10px;
    border-bottom: none;
    align-self: flex-start;
}

.other-card h4 {
    color: var(--secondary-color);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.other-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* 公司介绍区域样式 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.about-text {
    color: var(--text-color);
    line-height: 1.8;
}

.about-text p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.vision h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.vision p {
    margin-bottom: 0;
}

/* 应用领域样式 */
.application-grid {
    display: grid;
    /* 3 张卡：大屏一行 3 个，小屏单列 */
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 900px) {
    .application-grid {
        grid-template-columns: 1fr;
    }
}

.application-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.application-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

/* 应用领域图片沿用 .card-media 画框（见上方统一定义） */

.application-card h3 {
    padding: 1.5rem 1.5rem 1rem;
    margin: 0;
    color: var(--secondary-color);
    font-size: 1.4rem;
}

.application-card p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-light);
    margin: 0;
    flex-grow: 1;
    line-height: 1.6;
}

/* 合作伙伴区域样式 */
.partner-slider {
    overflow: hidden;
    position: relative;
    padding: 2rem 0;
}

.partner-track {
    width: 100%;
}

.partner-logos {
    display: flex;
    animation: scroll 30s linear infinite;
    gap: 4rem;
    align-items: center;
}

.partner-logos img {
    height: 50px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

/* 特定logo大小控制 */
.partner-logos img[src*="partner-1"] {
    height: 40px;
    max-width: 150px;
}

.partner-logos img:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.1);
}

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

/* 联系我们区域样式 */
.contact {
    padding: 4rem 2rem;
    background: var(--background-color);
}

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

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-header h2 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-header p {
    color: #666;
    font-size: 1.2rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.info-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: var(--secondary-color);
}

/* 表单样式 */
.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    background: #0e1413;
    color: var(--text-color);
    transition: var(--transition);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-light);
}

/* 蜜罐字段：真人看不到，只给机器人 */
.form-honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.contact-form button[type="submit"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.form-status {
    margin-top: 1rem;
    min-height: 1.25rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

.form-status.is-sending {
    color: var(--text-light);
}

.form-status.is-success {
    color: var(--primary-color);
}

.form-status.is-error {
    color: #ff8080;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: #0b100f;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

/* 页脚样式 */
.footer {
    background: var(--footer-bg);
    color: white;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-info img {
    height: 40px;
    margin-bottom: 1rem;
}

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

.footer-column h4 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-image {
        order: -1;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-text h1 {
        font-size: 3rem;
    }
    
    .hero-text p {
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--background-color);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        text-align: center;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

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

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

    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-text p {
        font-size: 1.1rem;
    }
    
}

@media (max-width: 576px) {
    .partner-logos img {
        height: 40px;
    }

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