/* product.css - 产品页面样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2196F3;
    --primary-dark: #1565C0;
    --secondary: #22c55e;
    --accent: #f59e0b;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-light: #cbd5e1;
    --text-white: #ffffff;
    --border-color: #334155;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #0a0e27;
    color: var(--text-light);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 头部导航 ===== */
.header {
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: var(--text-white);
}

.nav {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 20px;
    cursor: pointer;
}

/* ===== 英雄区域 ===== */
.hero {
    padding: 60px 0 40px;
    background: linear-gradient(180deg, #0f172a 0%, #0a0e27 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(34, 197, 94, 0.2);
    color: var(--secondary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.hero h1 {
    font-size: 42px;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-desc {
    font-size: 18px;
    color: #94a3b8;
    margin-bottom: 24px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 28px;
}

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

.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 13px;
    color: #94a3b8;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== 图片轮播 ===== */
.carousel-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 320px;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.6);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
}

.carousel-btn:hover {
    background: rgba(33, 150, 243, 0.8);
}

.carousel-btn.prev { left: 10px; }
.carousel-btn.next { right: 10px; }

.carousel-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.carousel-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.carousel-dots span.active {
    background: #2196F3;
    width: 24px;
    border-radius: 5px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(33, 150, 243, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* ===== 通用区块标题 ===== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}

.section-header p {
    color: #94a3b8;
    font-size: 16px;
}

/* ===== 核心优势 ===== */
.features {
    padding: 60px 0;
    background: var(--bg-dark);
}

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

.feature-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 40px rgba(33, 150, 243, 0.1);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

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

.feature-card p {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
}

/* ===== 技术参数 ===== */
.specs {
    padding: 60px 0;
    background: #0a0e27;
}

.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.specs-image img {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.specs-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.spec-item {
    background: var(--bg-card);
    padding: 14px 18px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.spec-label {
    font-size: 12px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.spec-value {
    font-size: 16px;
    color: var(--text-white);
    font-weight: 600;
    margin-top: 2px;
}

/* ===== 应用场景 ===== */
.scenes {
    padding: 60px 0;
    background: var(--bg-dark);
}

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

.scene-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    position: relative;
}

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

.scene-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

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

.scene-card p {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.scene-tag {
    display: inline-block;
    background: rgba(33, 150, 243, 0.15);
    color: var(--primary);
    padding: 2px 12px;
    border-radius: 12px;
    font-size: 12px;
}

/* ===== 客户案例 ===== */
.cases {
    padding: 60px 0;
    background: #0a0e27;
}

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

.case-card {
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s;
}

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

.case-header {
    padding: 20px 24px 12px;
}

.case-industry {
    display: inline-block;
    background: rgba(34, 197, 94, 0.15);
    color: var(--secondary);
    padding: 2px 12px;
    border-radius: 12px;
    font-size: 12px;
    margin-bottom: 8px;
}

.case-header h3 {
    font-size: 16px;
    color: var(--text-white);
}

.case-body {
    padding: 0 24px 24px;
}

.case-desc {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.case-result {
    background: rgba(34, 197, 94, 0.05);
    padding: 12px 16px;
    border-radius: 10px;
    border-left: 3px solid var(--secondary);
}

.result-label {
    font-size: 12px;
    color: #94a3b8;
    display: block;
}

.result-text {
    font-size: 14px;
    color: var(--text-white);
    font-weight: 500;
}

/* ===== 询盘表单 ===== */
.inquiry {
    padding: 60px 0;
    background: var(--bg-dark);
}

.inquiry-box {
    max-width: 720px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    padding: 40px;
}

.inquiry-header {
    text-align: center;
    margin-bottom: 32px;
}

.inquiry-header h2 {
    font-size: 28px;
    color: var(--text-white);
}

.inquiry-header p {
    color: #94a3b8;
    font-size: 16px;
}

.form-message {
    padding: 14px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
}

.form-message.success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--secondary);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: #0f172a;
    color: var(--text-white);
    font-size: 14px;
    transition: border-color 0.2s;
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.form-actions .btn-secondary {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-light);
}

.form-actions .btn-secondary:hover {
    border-color: #ef4444;
    color: #ef4444;
}

/* ===== 页脚 ===== */
.footer {
    background: #0a0e27;
    border-top: 1px solid var(--border-color);
    padding: 40px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 32px;
}

.footer-col h4 {
    color: var(--text-white);
    font-size: 16px;
    margin-bottom: 12px;
}

.footer-col a {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    padding: 4px 0;
    transition: color 0.2s;
}

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

.footer-col p {
    color: #94a3b8;
    font-size: 14px;
    padding: 4px 0;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #64748b;
}

.footer-slogan {
    color: var(--primary);
    font-weight: 600;
}

/* ===== 悬浮按钮 ===== */
.float-buttons {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 99;
}

.float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    font-size: 24px;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.float-btn.phone {
    background: var(--secondary);
    color: white;
}

.float-btn.phone:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(34, 197, 94, 0.4);
}

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

.float-btn.inquiry:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(33, 150, 243, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .scenes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .carousel-slides {
        height: 220px;
    }

    .carousel-btn {
        width: 30px;
        height: 30px;
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        flex-direction: column;
        background: var(--bg-dark);
        padding: 16px;
        border-radius: 12px;
        border: 1px solid var(--border-color);
        position: absolute;
        top: 70px;
        right: 20px;
        width: 200px;
        gap: 12px;
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .scenes-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-list {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .inquiry-box {
        padding: 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .float-buttons {
        bottom: 20px;
        right: 20px;
    }
    
    .float-btn {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
}