/* ==========================================
   深圳市昭临网络科技有限责任公司 - 官网样式
   深蓝商务风格，专业可信赖
   ========================================== */

/* ---------- CSS Reset & Base ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - 深蓝商务 */
    --primary-color: #1a365d;
    --primary-light: #2c5282;
    --primary-dark: #0f2442;
    
    /* 辅助色 - 金色点缀 */
    --accent-color: #d69e2e;
    --accent-light: #ecc94b;
    
    /* 背景色 */
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --bg-gray: #edf2f7;
    
    /* 文字颜色 */
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --text-white: #ffffff;
    
    /* 间距 */
    --section-padding: 80px 0;
    --container-width: 1200px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    
    /* 圆角 */
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

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

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

/* ---------- Header & Navigation ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: bold;
    font-size: 18px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.logo-text span {
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: var(--text-secondary);
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent-color);
    color: var(--text-primary);
    padding: 10px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 14px;
}

.nav-cta:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
}

/* ---------- Hero Section ---------- */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: var(--text-white);
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.2);
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}

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

.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 32px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

.hero-image {
    position: relative;
}

.hero-form {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.hero-form h3 {
    color: var(--primary-color);
    font-size: 24px;
    margin-bottom: 8px;
}

.hero-form p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.form-note {
    font-size: 12px;
    color: var(--text-light);
    text-align: center;
    margin-top: 12px;
}

@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
}

/* ---------- Section Common ---------- */
.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    background: rgba(26, 54, 93, 0.1);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 16px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Features Section ---------- */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
}

.feature-card h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

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

@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Products Section ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: var(--text-white);
}

.product-content {
    padding: 24px;
}

.product-content h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.product-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.product-tag {
    background: var(--bg-light);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
}

.product-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.product-link:hover {
    color: var(--accent-color);
    gap: 10px;
}

@media (max-width: 992px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- About Section ---------- */
.about {
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.about-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-image-item {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.about-image-item:first-child {
    grid-column: span 2;
}

.about-image-item i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.about-image-item h4 {
    font-size: 16px;
    color: var(--text-primary);
}

.about-image-item p {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ---------- Credentials Section ---------- */
.credentials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.credential-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.credential-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.credential-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 36px;
    color: var(--text-white);
}

.credential-card h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.credential-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

@media (max-width: 992px) {
    .credentials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .credentials-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- CTA Section ---------- */
.cta {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    padding: 80px 0;
    text-align: center;
    color: var(--text-white);
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.cta p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

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

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

.cta .btn-secondary {
    border-color: var(--text-white);
}

/* ---------- Contact Section ---------- */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 20px;
    flex-shrink: 0;
}

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

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

.contact-form {
    background: var(--bg-white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 24px;
}

@media (max-width: 992px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* ---------- Footer ---------- */
.footer {
    background: var(--primary-dark);
    color: var(--text-white);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.8;
    margin-top: 16px;
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

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

.footer-column ul li a {
    font-size: 14px;
    opacity: 0.8;
}

.footer-column ul li a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    opacity: 0.8;
}

@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* ---------- Page Header ---------- */
.page-header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    padding: 120px 0 60px;
    text-align: center;
    color: var(--text-white);
}

.page-header h1 {
    font-size: 40px;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* ---------- Process Section ---------- */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.process-item {
    text-align: center;
    position: relative;
}

.process-item::after {
    content: '';
    position: absolute;
    top: 40px;
    right: -12px;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
}

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

.process-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-white);
}

.process-item h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.process-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

@media (max-width: 992px) {
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-item::after {
        display: none;
    }
}

@media (max-width: 576px) {
    .process-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Testimonials ---------- */
.testimonials {
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.testimonial-content {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

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

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: 600;
}

.testimonial-info h4 {
    font-size: 16px;
    color: var(--text-primary);
}

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

@media (max-width: 992px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Utility Classes ---------- */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: 4px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }

/* ---------- Animations ---------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* Form Success Message */
.form-success {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.form-success.show {
    display: block;
}

.form-success-icon {
    width: 80px;
    height: 80px;
    background: #48bb78;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 40px;
    color: white;
}

.form-success h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.form-success p {
    color: var(--text-secondary);
}

/* Mobile Navigation Overlay */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.nav-overlay.active {
    display: block;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100%;
    background: var(--bg-white);
    z-index: 1001;
    padding: 80px 24px 24px;
    transition: right 0.3s ease;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav-list a {
    font-size: 18px;
    color: var(--text-primary);
    padding: 12px 0;
    border-bottom: 1px solid var(--bg-gray);
}

.mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}