/* ========================================
   术朗科技 - 高端科技风官网 v2
   大字体、高对比度、全屏背景
   ======================================== */

/* CSS Variables */
:root {
    --primary: #00d4ff;
    --primary-light: #66e5ff;
    --primary-dark: #0099cc;
    --secondary: #7c3aed;
    --accent: #00ff88;
    --bg-dark: #030712;
    --bg-card: rgba(17, 24, 39, 0.95);
    --bg-glass: rgba(17, 24, 39, 0.7);
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-color: rgba(0, 212, 255, 0.3);
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
    --radius: 20px;
    --radius-sm: 12px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    font-size: clamp(14px, 2vw, 18px);
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

.container { max-width: 1400px; margin: 0 auto; padding: 0 40px; }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 800; line-height: 1.3; }
.lead { font-size: 1.4rem; color: var(--text-secondary); line-height: 1.9; }

/* ========================================
   全屏背景区块
   ======================================== */
.fullscreen-section {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding: 120px 0;
    overflow: hidden;
}

.fullscreen-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.fullscreen-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(3, 7, 18, 0.85);
}

.section-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

/* 普通区块 */
.section {
    padding: 100px 0;
    position: relative;
    background: var(--bg-dark);
}

/* 全屏背景区块 - 每个区块都有背景 */
.section-bg {
    position: relative;
    overflow: hidden;
}

.section-bg::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: 0;
}

.section-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(3, 7, 18, 0.88);
    z-index: 1;
}

.section-bg .container {
    position: relative;
    z-index: 2;
}

/* 各区块背景图片 */
.about-section-bg::before { background-image: url('../images/bg_about.jpg'); }
.business-section-bg::before { background-image: url('../images/smart_city.jpg'); }
.products-section-bg::before { background-image: url('../images/ai_application.jpg'); }
.tech-section-bg::before { background-image: url('../images/bg_ai.jpg'); }
.overview-section-bg::before { background-image: url('../images/bg_smart_city.jpg'); }
.modules-section-bg::before { background-image: url('../images/bg_digital_gov.jpg'); }
.architecture-section-bg::before { background-image: url('../images/bg_integration.jpg'); }
.cases-section-bg::before { background-image: url('../images/bg_parking.jpg'); }
.capability-section-bg::before { background-image: url('../images/bg_ai.jpg'); }
.platforms-section-bg::before { background-image: url('../images/low_power.jpg'); }
.devices-section-bg::before { background-image: url('../images/protocol_integration.jpg'); }
.cases-detail-section-bg::before { background-image: url('../images/smart_traffic.jpg'); }
.tech-capability-section-bg::before { background-image: url('../images/bg_integration.jpg'); }
.core-capability-section-bg::before { background-image: url('../images/edge_computing.jpg'); }
.products-intro-section-bg::before { background-image: url('../images/bg_ai.jpg'); }
.tech-arch-section-bg::before { background-image: url('../images/bg_integration.jpg'); }
.advantages-section-bg::before { background-image: url('../images/bg_about.jpg'); }
.tech-highlights-section-bg::before { background-image: url('../images/parking_lot.jpg'); }
.system-arch-section-bg::before { background-image: url('../images/bg_parking.jpg'); }
.tech-features-section-bg::before { background-image: url('../images/bg_smart_city.jpg'); }
.case-studies-section-bg::before { background-image: url('../images/bg_ai.jpg'); }
.data-service-section-bg::before { background-image: url('../images/bg_integration.jpg'); }
.integration-cases-section-bg::before { background-image: url('../images/hardware_integration.jpg'); }
.tech-arch-section-bg::before { background-image: url('../images/bg_integration.jpg'); }

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-tag {
    display: inline-block;
    font-size: 1rem;
    color: var(--primary);
    letter-spacing: 4px;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 20px;
    padding: 8px 24px;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    background: rgba(0, 212, 255, 0.1);
}

.section-header h2 {
    font-size: 3.5rem;
    margin-bottom: 25px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.underline {
    width: 100px;
    height: 5px;
    background: var(--gradient-primary);
    margin: 0 auto;
    border-radius: 3px;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(3, 7, 18, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    height: 55px;
    width: auto;
    transition: var(--transition);
}

.logo-icon:hover { transform: scale(1.08); }

.logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
    letter-spacing: 2px;
}

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

.nav-links li a {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 10px 0;
    position: relative;
}

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

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 3px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-links li a:hover::after, .nav-links li a.active::after { width: 100%; }

.contact-btn {
    background: var(--gradient-primary);
    padding: 14px 30px !important;
    border-radius: 30px;
    color: var(--bg-dark) !important;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 25px rgba(0, 212, 255, 0.4);
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 40px rgba(0, 212, 255, 0.6);
}

.contact-btn::after { display: none !important; }

.mobile-menu { display: none; font-size: 1.8rem; color: var(--primary); cursor: pointer; }

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('../images/bg_about.jpg') center center no-repeat;
    background-size: cover;
    background-attachment: fixed;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, 
        rgba(3, 7, 18, 0.9) 0%, 
        rgba(3, 7, 18, 0.7) 50%,
        rgba(3, 7, 18, 0.9) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 1000px;
    padding: 0 40px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(0, 212, 255, 0.15);
    border: 2px solid var(--border-color);
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 40px;
    font-weight: 700;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 25px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 50%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
    text-shadow: 0 0 60px rgba(0, 212, 255, 0.3);
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 30px;
    font-weight: 700;
    letter-spacing: 6px;
    text-transform: uppercase;
}

.hero-desc {
    font-size: 1.5rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 50px;
    line-height: 2;
}

.hero-buttons {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 20px 45px;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-dark);
    box-shadow: 0 6px 35px rgba(0, 212, 255, 0.5);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 12px 50px rgba(0, 212, 255, 0.7);
}

.btn-outline {
    background: transparent;
    border: 3px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--gradient-primary);
    color: var(--bg-dark);
    transform: translateY(-5px);
    border-color: transparent;
}

.btn-lg { padding: 24px 55px; font-size: 1.3rem; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(15px); }
}

/* ========================================
   大卡片布局 - 每行2个
   ======================================== */
.cards-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.card-large {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(20px);
}

.card-large:hover {
    border-color: var(--primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.card-image {
    height: 280px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.card-image::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 50%;
    background: linear-gradient(transparent, rgba(17, 24, 39, 0.9));
}

.card-body {
    padding: 40px;
}

.card-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--bg-dark);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 8px 20px;
    border-radius: 25px;
    margin-bottom: 20px;
}

.card-body h3 {
    font-size: 2rem;
    margin-bottom: 18px;
}

.card-body p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.9;
}

.card-body ul {
    margin-bottom: 25px;
}

.card-body ul li {
    color: var(--text-secondary);
    font-size: 1.05rem;
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.card-body ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 700;
}

.card-link:hover { gap: 15px; }

/* 数字统计 */
.card-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-muted);
    font-size: 1rem;
    margin-top: 5px;
}

/* ========================================
   图文并排布局
   ======================================== */
.media-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.media-grid.reverse { direction: rtl; }
.media-grid.reverse > * { direction: ltr; }

.media-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.media-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
}

.media-content h3 {
    font-size: 2.5rem;
    margin-bottom: 25px;
}

.media-content p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 25px;
    line-height: 2;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-item:hover {
    border-color: var(--primary);
    transform: translateX(10px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--bg-dark);
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 1rem;
    color: var(--text-muted);
    margin: 0;
}

/* ========================================
   技术架构展示
   ======================================== */
.tech-showcase {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 50px;
}

.tech-layers {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tech-layer {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 30px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.tech-layer-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--bg-dark);
    flex-shrink: 0;
}

.tech-layer h4 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.tech-layer p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.tech-items {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.tech-tag {
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
}

/* ========================================
   案例展示
   ======================================== */
.case-showcase {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 50px;
}

.case-showcase-bg {
    height: 400px;
    background-size: cover;
    background-position: center;
}

.case-showcase-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(90deg, rgba(17, 24, 39, 0.95) 0%, transparent 60%);
}

.case-showcase-content {
    position: absolute;
    top: 0; left: 0;
    padding: 50px;
    max-width: 600px;
    z-index: 2;
}

.case-tag {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--bg-dark);
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.case-showcase-content h3 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.case-showcase-content p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    margin-bottom: 25px;
    line-height: 1.9;
}

/* ========================================
   能力展示
   ======================================== */
.capability-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.capability-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 45px;
    transition: var(--transition);
}

.capability-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.cap-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 2rem;
    color: var(--bg-dark);
}

.capability-card h4 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.capability-card > p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.9;
}

.cap-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cap-tag {
    background: rgba(0, 255, 136, 0.15);
    color: var(--accent);
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 0.95rem;
    font-weight: 600;
}

/* ========================================
   About Section
   ======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h3 {
    font-size: 2.5rem;
    margin-bottom: 25px;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 20px;
    line-height: 2;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 35px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.stat-card .stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: 8px;
}

/* ========================================
   Products Section
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 45px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

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

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

.product-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 2.5rem;
    color: var(--bg-dark);
}

.product-card h4 {
    font-size: 1.6rem;
    margin-bottom: 15px;
}

.product-card > p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 25px;
}

/* ========================================
   Certs
   ======================================== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 25px;
}

.cert-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 35px 20px;
    text-align: center;
    transition: var(--transition);
}

.cert-item:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.cert-item i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.cert-item span {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
}

.contact-info h3 {
    font-size: 2.5rem;
    margin-bottom: 35px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 65px;
    height: 65px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--bg-dark);
}

.contact-detail .label {
    color: var(--text-muted);
    font-size: 1rem;
}

.contact-detail .value {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 50px;
}

.contact-form h4 { margin-bottom: 30px; font-size: 1.8rem; }

.form-group { margin-bottom: 25px; }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 22px 28px;
    background: rgba(3, 7, 18, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-dark);
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 20px;
    font-size: 1.1rem;
}

.footer-links h5,
.footer-services h5,
.footer-contact h5 {
    font-size: 1.2rem;
    margin-bottom: 25px;
}

.footer-links ul li,
.footer-services ul li {
    margin-bottom: 15px;
}

.footer-links ul li a,
.footer-services ul li {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.footer-links ul li a:hover { color: var(--primary); }

.footer-contact p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-contact p i { color: var(--primary); }

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 1rem;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 160px 0 100px;
    margin-top: 70px;
}

.page-header-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.page-header-bg::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg, 
        rgba(3, 7, 18, 0.9) 0%, 
        rgba(3, 7, 18, 0.8) 50%,
        rgba(3, 7, 18, 0.95) 100%);
}

.page-header-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .separator { color: var(--text-muted); }
.breadcrumb .current { color: var(--primary); }

.page-header h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 20px;
    letter-spacing: 4px;
}

.page-desc {
    color: var(--text-secondary);
    font-size: 1.3rem;
}

/* AI Page Header */
.ai-header .page-header-bg { background-image: url('../images/bg_ai.jpg'); }
/* Parking Page Header */
.parking-header .page-header-bg { background-image: url('../images/bg_parking.jpg'); }
/* Integration Page Header */
.integration-header .page-header-bg { background-image: url('../images/bg_integration.jpg'); }
/* Smart City Page Header */
.smart-city-header .page-header-bg { background-image: url('../images/bg_smart_city.jpg'); }
/* Digital Gov Page Header */
.digital-gov-header .page-header-bg { background-image: url('../images/bg_digital_gov.jpg'); }
/* About Page Header */
.about-header .page-header-bg { background-image: url('../images/bg_about.jpg'); }

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    padding: 100px 0;
    background: var(--gradient-primary);
    text-align: center;
}

.cta-wrapper h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.cta-wrapper p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    color: rgba(0,0,0,0.7);
}

.cta-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
}

/* ========================================
   证书资质网格 - 一行4个
   ======================================== */
.cert-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.cert-card-4 {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px 25px;
    text-align: center;
    transition: var(--transition);
}

.cert-card-4:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.cert-card-4 .cert-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--bg-dark);
}

.cert-card-4 h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.cert-card-4 p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ========================================
   案例卡片网格 - 带配图
   ======================================== */
.case-card-img {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 40px;
    transition: var(--transition);
}

.case-card-img:hover {
    border-color: var(--primary);
}

.case-card-img.reverse {
    direction: rtl;
}

.case-card-img.reverse > * {
    direction: ltr;
}

.case-card-img .case-img-wrap {
    height: 350px;
    overflow: hidden;
}

.case-card-img .case-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-card-img:hover .case-img-wrap img {
    transform: scale(1.05);
}

.case-card-img .case-content-wrap {
    padding: 50px;
}

.case-card-img .case-tag {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--bg-dark);
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.case-card-img h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.case-card-img p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 25px;
}

.case-card-img .case-stats-row {
    display: flex;
    gap: 30px;
}

.case-card-img .case-stat {
    text-align: center;
}

.case-card-img .case-stat-value {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-card-img .case-stat-label {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ========================================
   技术展示项 - 带配图
   ======================================== */
.tech-showcase-item {
    margin-bottom: 80px;
}

.tech-showcase-item:last-child {
    margin-bottom: 0;
}

.tech-number {
    display: inline-block;
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    line-height: 1;
}

/* ========================================
   统计数字块 - 一行显示
   ======================================== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.stat-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px 25px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-block::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.stat-block:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.stat-block .stat-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.stat-block .stat-value {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-block .stat-label {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ========================================
   芯片平台网格 - 带配图
   ======================================== */
.platforms-grid-img {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.platform-card-img {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.platform-card-img:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.platform-card-img .platform-img {
    height: 150px;
    overflow: hidden;
}

.platform-card-img .platform-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.platform-card-img .platform-info {
    padding: 25px;
    text-align: center;
}

.platform-card-img h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.platform-card-img p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   设备网格 - 带配图
   ======================================== */
.devices-grid-img {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.device-card-img {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.device-card-img:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.device-card-img .device-img {
    height: 140px;
    overflow: hidden;
}

.device-card-img .device-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.device-card-img .device-info {
    padding: 25px;
    text-align: center;
}

.device-card-img h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.device-card-img p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.device-card-img .device-protocol {
    display: inline-block;
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ========================================
   解决方案案例 - 轮播卡片
   ======================================== */
.solution-carousel {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding: 20px 0;
    scroll-snap-type: x mandatory;
}

.solution-carousel::-webkit-scrollbar {
    height: 8px;
}

.solution-carousel::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 4px;
}

.solution-carousel::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

.solution-card-carousel {
    min-width: 450px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    scroll-snap-align: start;
    transition: var(--transition);
}

.solution-card-carousel:hover {
    border-color: var(--primary);
}

.solution-card-carousel .solution-img {
    height: 200px;
    overflow: hidden;
}

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

.solution-card-carousel .solution-content {
    padding: 30px;
}

.solution-card-carousel .solution-number {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--bg-dark);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.solution-card-carousel h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.solution-card-carousel p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.solution-card-carousel .solution-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.solution-card-carousel .spec-tag {
    background: rgba(0, 255, 136, 0.15);
    color: var(--accent);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* ========================================
   AI架构图展示
   ======================================== */
.ai-arch-showcase {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.ai-arch-showcase .arch-img {
    height: 400px;
    overflow: hidden;
}

.ai-arch-showcase .arch-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ai-arch-showcase .arch-content {
    padding: 40px;
}

.ai-arch-showcase h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.ai-arch-showcase p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 25px;
}

.ai-arch-showcase .arch-layers {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.ai-arch-showcase .arch-layer-tag {
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
}

/* ========================================
   数据集展示
   ======================================== */
.dataset-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.dataset-showcase .dataset-img {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.dataset-showcase .dataset-img img {
    width: 100%;
    height: 350px;
    object-fit: cover;
}

.dataset-showcase .dataset-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.dataset-showcase .dataset-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 25px;
}

.dataset-showcase .dataset-specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.dataset-showcase .spec-box {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.dataset-showcase .spec-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--bg-dark);
}

.dataset-showcase .spec-number {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary);
}

/* ========================================
   场景卡片网格 - 带配图
   ======================================== */
.scenarios-grid-img {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.scenario-card-img {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.scenario-card-img:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.scenario-card-img .scenario-img {
    height: 160px;
    overflow: hidden;
}

.scenario-card-img .scenario-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scenario-card-img .scenario-content {
    padding: 25px;
}

.scenario-card-img h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.scenario-card-img p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.scenario-card-img .scenario-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.scenario-card-img .scenario-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}

/* ========================================
   案例卡片 - 带配图布局
   ======================================== */
.case-card-img {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: start;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 40px;
    border: 1px solid var(--border-color);
}

.case-img-wrapper {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.case-img-wrapper img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.case-img-tag {
    position: absolute;
    bottom: 15px;
    left: 15px;
    background: rgba(0, 212, 255, 0.9);
    color: var(--bg-dark);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.case-content-wrapper h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.case-summary {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.case-details-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.case-detail-block h4 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.case-detail-block p,
.case-detail-block li {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.case-detail-block ul {
    padding-left: 20px;
    list-style: disc;
}

.case-detail-block li {
    margin-bottom: 6px;
}

/* 案例统计数据行 */
.stats-row {
    display: flex;
    gap: 30px;
    padding: 20px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    text-align: center;
}

.stat-num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 5px;
}

/* ========================================
   芯片平台卡片 - 带图片
   ======================================== */
.platforms-grid-img {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.platform-card-img {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.platform-img-wrapper {
    height: 140px;
    overflow: hidden;
}

.platform-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.platform-card-img:hover .platform-img-wrapper img {
    transform: scale(1.1);
}

.platform-content {
    padding: 20px;
    text-align: center;
}

.platform-content h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.platform-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.platform-tag {
    display: inline-block;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}

/* ========================================
   设备卡片 - 带图片
   ======================================== */
.devices-grid-img {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.device-card-img {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.device-img-wrapper {
    height: 140px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.device-card-img:hover .device-img-wrapper img {
    transform: scale(1.1);
}

.device-content {
    padding: 20px;
    text-align: center;
}

.device-content h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.device-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.device-content .device-protocol {
    display: inline-block;
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
}

/* ========================================
   解决方案轮播
   ======================================== */
.solution-carousel {
    position: relative;
    overflow: hidden;
}

.carousel-track {
    position: relative;
}

.carousel-slide {
    display: none;
}

.carousel-slide.active {
    display: block;
}

.solution-showcase {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.solution-showcase-img {
    position: relative;
    height: 400px;
}

.solution-showcase-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.solution-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--primary);
    color: var(--bg-dark);
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
}

.solution-showcase-content {
    padding: 40px 40px 40px 0;
}

.solution-showcase-content .solution-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 10px;
}

.solution-showcase-content h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.solution-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.8;
}

.solution-specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.spec-item {
    display: flex;
    flex-direction: column;
    padding: 12px 15px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary);
}

.spec-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.spec-value {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.carousel-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

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

.carousel-dots {
    display: flex;
    gap: 10px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    border-color: var(--primary);
}

/* ========================================
   大数字统计行
   ======================================== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-box {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.stat-icon-large {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 15px;
    font-size: 1.8rem;
    color: var(--bg-dark);
}

.stat-content {
    flex: 1;
}

.stat-number-lg {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label-lg {
    font-size: 1rem;
    color: var(--text-muted);
}

/* ========================================
   AI架构展示
   ======================================== */
.ai-arch-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 40px;
    border: 1px solid var(--border-color);
}

.ai-arch-showcase .arch-img {
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.ai-arch-showcase .arch-img img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.ai-arch-showcase .arch-content h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
}

.ai-arch-showcase .arch-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.arch-layers {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.arch-layer-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 技术流程网格 */
.tech-flow-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.tech-flow-item {
    flex: 1;
    max-width: 250px;
    text-align: center;
    padding: 25px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.tech-flow-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.3;
    margin-bottom: 10px;
}

.tech-flow-item h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.tech-flow-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.tech-flow-arrow {
    color: var(--primary);
    font-size: 1.5rem;
}

/* 技术优势卡片 - 带图片 */
.advantages-grid-img {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-card-img {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.advantage-card-img .advantage-img {
    height: 180px;
    overflow: hidden;
}

.advantage-card-img .advantage-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.advantage-card-img:hover .advantage-img img {
    transform: scale(1.1);
}

.advantage-card-img .advantage-content {
    padding: 25px;
}

.advantage-card-img .advantage-icon {
    margin-bottom: 15px;
}

/* 数据集展示 */
.dataset-showcase {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: start;
}

.dataset-visual {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
}

.dataset-visual img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.dataset-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    padding: 30px 20px 20px;
    display: flex;
    justify-content: space-around;
}

.dataset-overlay .overlay-stat {
    text-align: center;
}

.dataset-overlay .stat-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.dataset-overlay .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.dataset-info-panel {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    border: 1px solid var(--border-color);
}

.dataset-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--bg-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.dataset-info-panel h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.dataset-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.metric-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary);
}

.metric-card .metric-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    color: var(--bg-dark);
    font-size: 1.2rem;
}

.metric-card .metric-data {
    display: flex;
    flex-direction: column;
}

.metric-card .metric-num {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
}

.metric-card .metric-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 场景卡片 - 带图片 */
.scenarios-grid-img {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.scenario-card-img {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.scenario-card-img .scenario-img {
    position: relative;
    height: 150px;
    overflow: hidden;
}

.scenario-card-img .scenario-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.scenario-card-img:hover .scenario-img img {
    transform: scale(1.1);
}

.scenario-card-img .scenario-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--primary);
    color: var(--bg-dark);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.scenario-card-img .scenario-content {
    padding: 20px;
}

.scenario-card-img .scenario-content h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.scenario-card-img .scenario-content > p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.scenario-card-img .scenario-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.scenario-card-img .scenario-features li {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.scenario-card-img .scenario-features li i {
    color: var(--accent);
    font-size: 0.8rem;
}

/* 案例卡片 - 带图片 */
.cases-grid-img {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

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

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

.case-card-img .case-img {
    height: 200px;
    overflow: hidden;
}

.case-card-img .case-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-card-img:hover .case-img img {
    transform: scale(1.1);
}

.case-card-img .case-content {
    padding: 25px;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1200px) {
    .container { padding: 0 30px; }
    .hero h1 { font-size: 3.5rem; }
    .section-header h2 { font-size: 3rem; }
    .cards-grid-2 { grid-template-columns: 1fr; }
    .media-grid { grid-template-columns: 1fr; }
    .capability-grid { grid-template-columns: 1fr; }
    .platforms-grid-img { grid-template-columns: repeat(2, 1fr); }
    .devices-grid-img { grid-template-columns: repeat(2, 1fr); }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid-img { grid-template-columns: 1fr; }
    .dataset-showcase { grid-template-columns: 1fr; }
    .scenarios-grid-img { grid-template-columns: repeat(2, 1fr); }
    .cases-grid-img { grid-template-columns: 1fr; }
    .ai-arch-showcase { grid-template-columns: 1fr; }
    .solution-showcase { grid-template-columns: 1fr !important; }
}

@media (max-width: 992px) {
    body { font-size: 16px; }
    .nav-links { display: none; }
    .mobile-menu { display: block; }
    .hero h1 { font-size: 2.8rem; }
    .hero-subtitle { font-size: 1.5rem; }
    .about-content { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    body { font-size: 14px; }
    .container { padding: 0 15px; }
    .section { padding: 50px 0; }
    .hero h1 { font-size: clamp(1.6rem, 7vw, 2.2rem); }
    .hero-subtitle { font-size: clamp(0.85rem, 3.5vw, 1.2rem); letter-spacing: 2px; }
    .hero-desc { font-size: clamp(0.9rem, 3vw, 1.1rem); }
    .section-header h2 { font-size: clamp(1.6rem, 6vw, 2.2rem); }
    .page-header h1 { font-size: clamp(2rem, 7vw, 2.5rem); }
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .products-grid { grid-template-columns: 1fr; }
    .certs-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .card-image { height: 180px; }
    .card-body { padding: 15px; }
    .card-stats { grid-template-columns: repeat(2, 1fr); }
    .tech-tabs-nav { flex-wrap: wrap; gap: 5px; }
    .tech-tab-btn { flex: 1 1 45%; min-width: 100px; padding: 10px 5px; font-size: 0.75rem; }
    .tech-tab-btn i { font-size: 1rem; }
    .tech-tab-btn span { display: block; font-size: 0.65rem; }
    .tab-content-grid { grid-template-columns: 1fr; }
    .tab-content-img { height: 160px; }
    .cert-section-wrapper { flex-direction: column; }
    .case-card-img { flex-direction: column; }
    .case-img-wrapper { width: 100%; }
    .case-img-wrapper img { height: 200px; object-fit: cover; }
    .case-content-wrapper { padding: 15px 0; }
    .case-details-grid { grid-template-columns: 1fr; gap: 10px; }
    .stats-row { flex-wrap: wrap; gap: 10px; }
    .stat-item { flex: 1 1 45%; }
    .overview-detail-list { gap: 15px; }
    .detail-item { flex-direction: column; gap: 10px; padding: 15px; }
    .detail-icon { width: 45px; height: 45px; }
    .detail-content h4 { font-size: 1rem; }
    .footer-content { grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .footer-brand { display: none; }
}

/* ========================================
   Tab切换组件
   ======================================== */
.tech-tabs-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.tech-tabs-nav {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.tech-tab-btn {
    flex: 1;
    padding: 20px 15px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    position: relative;
}

.tech-tab-btn i {
    font-size: 1.3rem;
}

.tech-tab-btn:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--text-primary);
}

.tech-tab-btn.active {
    background: var(--bg-card);
    color: var(--primary);
}

.tech-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
}

.tech-tabs-content {
    padding: 40px;
}

.tech-tab-panel {
    display: none;
}

.tech-tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-content-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: start;
}

.tab-content-img {
    height: 350px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.tab-content-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tab-content-text h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
}

.tab-lead {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 25px;
    line-height: 1.7;
}

.tab-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tab-feature-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary);
}

.tab-feature-item .feature-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    color: var(--bg-dark);
    flex-shrink: 0;
}

.tab-feature-item .feature-content h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.tab-feature-item .feature-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.tab-metrics {
    display: flex;
    gap: 30px;
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
}

.tab-metrics .metric-item {
    text-align: center;
    flex: 1;
}

.tab-metrics .metric-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.tab-metrics .metric-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ========================================
   专利资质样式
   ======================================== */
.cert-section-wrapper {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.cert-category {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    border: 1px solid var(--border-color);
}

.cert-category-title {
    font-size: 1.4rem;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.cert-category-title i {
    color: var(--primary);
}

.cert-patent {
    border-left: 3px solid var(--accent);
}

.cert-patent .cert-number {
    display: block;
    font-size: 0.85rem;
    color: var(--accent);
    margin-top: 10px;
    font-family: monospace;
}

/* 卡片规格标签 */
.card-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.spec-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========================================
   解决方案详情列表
   ======================================== */
.overview-detail-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 30px;
}

.detail-item {
    display: flex;
    gap: 25px;
    padding: 25px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.detail-item:hover {
    border-color: var(--primary);
    transform: translateX(5px);
}

.detail-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-icon i {
    font-size: 1.5rem;
    color: white;
}

.detail-content {
    flex: 1;
}

.detail-content h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.detail-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.detail-tags li {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}