/* ============================================
   巴顿贝塔官网 - 深蓝金色商务风格
   ============================================ */

/* CSS Variables */
:root {
    --primary-dark: #0d1b2a;
    --primary: #1a365d;
    --primary-light: #2d4a6f;
    --accent: #c9a227;
    --accent-light: #d4b445;
    --accent-dark: #b8922a;
    --accent-glow: rgba(201, 162, 39, 0.3);
    
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #f1f5f9;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-md: 0 8px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 16px 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 24px 48px rgba(0,0,0,0.15);
    
    --transition-fast: 0.2s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    color: var(--gray-700);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

ul, ol {
    list-style: none;
}

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

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 27, 42, 0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(201, 162, 39, 0.1);
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(13, 27, 42, 0.98);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    padding: 0 40px;
    max-width: 1400px;
    margin: 0 auto;
}

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

.logo img {
    height: 48px;
    width: auto;
}

.logo-text {
    color: var(--white);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
}

.logo-text span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 8px;
}

.nav-links a {
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 8px;
    transition: all var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--accent);
    transition: transform var(--transition);
}

.nav-links a:hover {
    color: var(--white);
    background: rgba(255,255,255,0.05);
}

.nav-links a:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-cta {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: var(--primary-dark) !important;
    padding: 12px 28px !important;
    border-radius: 8px;
    font-weight: 600 !important;
    box-shadow: 0 4px 15px var(--accent-glow);
    transition: all var(--transition) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #152238 100%);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 80%, rgba(201, 162, 39, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(201, 162, 39, 0.05) 0%, transparent 50%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image: 
        linear-gradient(rgba(201, 162, 39, 0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201, 162, 39, 0.5) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.12;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    padding: 120px 40px 80px;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(201, 162, 39, 0.12);
    border: 1px solid rgba(201, 162, 39, 0.25);
    color: var(--accent-light);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero-badge i {
    font-size: 12px;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 12px;
    font-weight: 500;
    letter-spacing: 2px;
}

.hero-slogan {
    font-size: 15px;
    color: var(--accent);
    margin-bottom: 20px;
    font-style: italic;
    opacity: 0.9;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.65);
    margin-bottom: 36px;
    max-width: 500px;
    line-height: 1.9;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: var(--primary-dark);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
    background: rgba(255,255,255,0.06);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.35);
}

/* Hero Stats */
.hero-stats-wrapper {
    position: relative;
    animation: fadeInRight 1s ease 0.3s both;
}

.hero-stats-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 24px;
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.hero-stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.hero-stats-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(201, 162, 39, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: 24px 16px;
    background: rgba(255,255,255,0.02);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.04);
    transition: all 0.4s ease;
}

.stat-item:hover {
    transform: translateY(-6px);
    border-color: rgba(201, 162, 39, 0.25);
    background: rgba(255,255,255,0.04);
}

.stat-icon {
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 14px;
}

.stat-number {
    font-size: 40px;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    font-weight: 500;
}

/* ============================================
   Section Common Styles
   ============================================ */
.section {
    padding: 100px 0;
}

.section-gray {
    background: var(--gray-50);
}

.section-dark {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: var(--white);
}

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

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.section-tag::before,
.section-tag::after {
    content: '';
    width: 40px;
    height: 2px;
    background: var(--accent);
}

.section-dark .section-tag {
    color: var(--accent-light);
}

.section-dark .section-tag::before,
.section-dark .section-tag::after {
    background: var(--accent-light);
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-dark .section-title {
    color: var(--white);
}

.section-desc {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.section-dark .section-desc {
    color: rgba(255,255,255,0.6);
}

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

.about-content h2 {
    font-size: 38px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 24px;
}

.about-content h2 span {
    color: var(--accent);
}

.about-content p {
    font-size: 16px;
    color: var(--gray-600);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 36px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid transparent;
}

.about-feature:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(201, 162, 39, 0.2);
}

.about-feature i {
    font-size: 22px;
    color: var(--accent);
    width: 36px;
    flex-shrink: 0;
}

.about-feature span {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
}

.about-visual {
    position: relative;
}

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
}

.about-image:hover img {
    transform: scale(1.03);
}

.about-card {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    border-radius: 20px;
    padding: 36px;
    color: var(--white);
    margin-top: 24px;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
}

.about-card h3 {
    font-size: 22px;
    margin-bottom: 28px;
    color: var(--white);
}

.timeline-item {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

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

.timeline-year {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    color: var(--primary-dark);
}

.timeline-content h4 {
    font-size: 15px;
    margin-bottom: 4px;
    font-weight: 600;
    color: var(--white);
}

.timeline-content p {
    font-size: 13px;
    opacity: 0.6;
    color: var(--white);
    margin: 0;
    line-height: 1.5;
}

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

.product-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    border: 1px solid var(--gray-200);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(201, 162, 39, 0.3);
}

.product-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(to top, rgba(13,27,42,0.5), transparent);
}

.product-content {
    padding: 28px;
}

.product-category {
    display: inline-block;
    background: rgba(201, 162, 39, 0.1);
    color: var(--accent-dark);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.product-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.product-content p {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 16px;
    line-height: 1.7;
}

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

.product-tag {
    background: var(--gray-100);
    color: var(--gray-600);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    transition: all var(--transition);
}

.product-tag:hover {
    background: var(--accent);
    color: var(--white);
}

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

.advantage-card {
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 20px;
    padding: 44px 32px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.advantage-card:hover {
    transform: translateY(-10px);
    background: rgba(255,255,255,0.08);
    border-color: rgba(201, 162, 39, 0.3);
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: var(--primary-dark);
    transition: all 0.4s ease;
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.advantage-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    font-weight: 700;
    color: var(--white);
}

.advantage-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    line-height: 1.7;
}

/* ============================================
   Applications Section
   ============================================ */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.app-card {
    position: relative;
    height: 200px;
    border-radius: 16px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    cursor: pointer;
    transition: all 0.4s ease;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 40%, rgba(13,27,42,0.85) 100%);
    z-index: 1;
    transition: all 0.4s ease;
}

.app-card:hover::before {
    background: linear-gradient(to bottom, rgba(201, 162, 39, 0.1) 0%, rgba(13,27,42,0.9) 100%);
}

.app-icon {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    color: rgba(255,255,255,0.15);
    z-index: 0;
    transition: all 0.4s ease;
}

.app-card:hover .app-icon {
    color: var(--accent);
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.15);
}

.app-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    z-index: 2;
    color: var(--white);
}

.app-content h3 {
    font-size: 17px;
    margin-bottom: 6px;
    font-weight: 700;
}

.app-content p {
    font-size: 12px;
    opacity: 0.7;
}

.app-card:hover {
    transform: scale(1.03);
}

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

.case-card {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    cursor: pointer;
    position: relative;
}

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

.case-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.08);
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(13,27,42,0.85) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 20px;
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-overlay i {
    color: var(--accent);
    font-size: 28px;
}

.case-content {
    padding: 20px;
    background: var(--white);
}

.case-content h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 6px;
}

.case-content p {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.5;
}

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

.service-card {
    background: var(--white);
    border-radius: 16px;
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(201, 162, 39, 0.3);
}

.service-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(201, 162, 39, 0.1) 0%, rgba(201, 162, 39, 0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--accent);
    transition: all 0.4s ease;
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: var(--white);
}

.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

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

.news-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--gray-200);
}

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

.news-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.news-image i {
    font-size: 48px;
    color: rgba(255,255,255,0.15);
}

.news-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--accent);
    color: var(--primary-dark);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
}

.news-content {
    padding: 24px;
}

.news-date {
    font-size: 12px;
    color: var(--gray-400);
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-content p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

.news-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    margin-top: 14px;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.news-more:hover {
    gap: 10px;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: start;
}

.contact-info h2 {
    font-size: 38px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 16px;
}

.contact-info h2 span {
    color: var(--accent);
}

.contact-info > p {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 40px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: var(--gray-50);
    border-radius: 16px;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.contact-item:hover {
    transform: translateX(10px);
    background: var(--white);
    box-shadow: var(--shadow-md);
    border-color: var(--gray-200);
}

.contact-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary-dark);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--gray-500);
}

.contact-form {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    border-radius: 24px;
    padding: 48px;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
}

.contact-form h3 {
    font-size: 26px;
    margin-bottom: 32px;
    color: var(--white);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
    opacity: 0.9;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    color: var(--white);
    font-size: 15px;
    font-family: inherit;
    transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.35);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255,255,255,0.12);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border: none;
    border-radius: 10px;
    color: var(--primary-dark);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: inherit;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--primary-dark);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.5;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.06);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: rgba(255,255,255,0.6);
    transition: all var(--transition);
}

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

.footer-links h4 {
    font-size: 15px;
    margin-bottom: 24px;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links ul li {
    margin-bottom: 14px;
}

.footer-links a {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    transition: all var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.footer-bottom {
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    opacity: 0.5;
}

.footer-bottom a {
    color: rgba(255,255,255,0.55);
}

.footer-bottom a:hover {
    color: var(--accent);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.scroll-animate {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Lightbox
   ============================================ */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.95);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 85vh;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    cursor: pointer;
    transition: color 0.3s;
    z-index: 10;
}

.lightbox-close:hover {
    color: var(--accent);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 50px;
    cursor: pointer;
    padding: 20px;
    transition: color 0.3s;
}

.lightbox-nav:hover {
    color: var(--accent);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-caption {
    color: white;
    margin-top: 20px;
    font-size: 16px;
    text-align: center;
}

/* ============================================
   Mobile Menu
   ============================================ */
.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    padding: 20px;
    z-index: 999;
    border-top: 1px solid rgba(201, 162, 39, 0.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 16px 0;
    color: var(--white);
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: 15px;
}

.mobile-menu a:hover {
    color: var(--accent);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1200px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }
    
    .hero-title {
        font-size: 44px;
    }
    
    .hero-desc {
        margin: 0 auto 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .applications-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 992px) {
    .nav-links,
    .nav-cta {
        display: none;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .navbar-inner {
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .navbar-inner {
        height: 64px;
    }
    
    .logo img {
        height: 36px;
    }
    
    .hero-content {
        padding: 80px 20px 40px;
    }
    
    .hero-badge {
        font-size: 11px;
        padding: 6px 12px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-desc {
        font-size: 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats-card {
        padding: 24px;
    }
    
    .stat-item {
        padding: 16px 8px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-tag {
        font-size: 11px;
        letter-spacing: 2px;
    }
    
    .section-tag::before,
    .section-tag::after {
        width: 24px;
    }
    
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .advantage-card {
        padding: 28px 20px;
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .app-card {
        height: 140px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .case-image {
        height: 140px;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .about-content h2 {
        font-size: 26px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .about-card {
        padding: 24px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-info h2 {
        font-size: 26px;
    }
    
    .contact-form {
        padding: 32px 24px;
    }
    
    .footer {
        padding: 60px 0 32px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .mobile-menu {
        top: 64px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }
    
    .stat-item {
        padding: 12px 6px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image,
    .about-card {
        border-radius: 12px;
    }
    
    .product-image {
        height: 160px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}