/* ============================================
   广州筑保科技有限公司官网 - 主样式文件
   科技风 / AI感 / 建筑工程行业
   ============================================ */

/* ========== CSS Variables ========== */
:root {
    /* 主色调 */
    --primary-dark: #0a1628;
    --primary-blue: #0066ff;
    --primary-light: #3b82f6;
    --accent-cyan: #00d4ff;
    --accent-green: #10b981;
    --accent-orange: #f97316;
    
    /* 中性色 */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
    --gradient-dark: linear-gradient(180deg, #0a1628 0%, #1e3a5f 100%);
    --gradient-hero: linear-gradient(135deg, #0a1628 0%, #0f2744 50%, #1a3a5f 100%);
    --gradient-card: linear-gradient(145deg, rgba(0,102,255,0.1) 0%, rgba(0,212,255,0.05) 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 102, 255, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 102, 255, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 102, 255, 0.16);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
    
    /* 间距 */
    --section-padding: 100px;
    --container-width: 1200px;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--gray-900);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

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

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-title p {
    color: var(--gray-500);
    font-size: 1.1rem;
    margin-top: 20px;
}

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

section {
    padding: var(--section-padding) 0;
}

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

.section-dark .section-title h2,
.section-dark .section-title p {
    color: var(--white);
}

/* ========== Header & Navigation ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: logoShine 3s ease-in-out infinite;
}

@keyframes logoShine {
    0%, 100% { transform: translateX(-100%) rotate(45deg); }
    50% { transform: translateX(100%) rotate(45deg); }
}

.logo-text {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.3;
}

.logo-text span {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--gray-400);
    letter-spacing: 1px;
}

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

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

.nav-link {
    color: var(--gray-300);
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
    transition: var(--transition-fast);
}

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

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

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

.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-dark);
    border-radius: 12px;
    padding: 12px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255,255,255,0.1);
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--gray-300);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.nav-dropdown-menu a:hover {
    background: rgba(0, 102, 255, 0.2);
    color: var(--white);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-fast);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-dark);
    padding: 20px;
    overflow-y: auto;
}

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

.mobile-nav a {
    display: block;
    color: var(--gray-300);
    padding: 15px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 1.1rem;
}

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

/* ========== Hero Section ========== */
.hero {
    min-height: 100vh;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 60% 80%, rgba(0, 102, 255, 0.1) 0%, transparent 40%);
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 102, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-cyan);
    border-radius: 50%;
    opacity: 0.6;
    animation: particleFloat 8s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.6; }
    50% { transform: translateY(-100px) translateX(50px); opacity: 0.2; }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 102, 255, 0.2);
    border: 1px solid rgba(0, 102, 255, 0.3);
    padding: 8px 16px;
    border-radius: 50px;
    color: var(--accent-cyan);
    font-size: 0.9rem;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero h1 {
    color: var(--white);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero h1 .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--gray-300);
    font-size: 1.25rem;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

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

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 102, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

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

/* ========== Cards ========== */
.card {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 102, 255, 0.2);
}

.card-gradient {
    background: var(--gradient-card);
    border: 1px solid rgba(0, 102, 255, 0.1);
}

.card-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.card-icon.cyan {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
}

.card-icon.green {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.card-icon.orange {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
}

.card h3 {
    margin-bottom: 12px;
}

.card p {
    color: var(--gray-500);
}

/* ========== Products Section ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: rgba(10, 22, 40, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

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

.product-card:hover {
    background: rgba(10, 22, 40, 0.95);
    border-color: rgba(0, 102, 255, 0.3);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 102, 255, 0.2);
}

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: rgba(0, 102, 255, 0.15);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    transition: var(--transition-normal);
}

.product-card:hover .product-icon {
    background: var(--gradient-primary);
    transform: scale(1.1);
}

.product-card h3 {
    color: var(--white);
    margin-bottom: 12px;
}

.product-card p {
    color: var(--gray-400);
    font-size: 0.95rem;
}

.product-tag {
    display: inline-block;
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-cyan);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-top: 16px;
}

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

.feature-item {
    text-align: center;
    padding: 32px 20px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.feature-item:hover {
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.3);
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.feature-item h4 {
    color: var(--white);
    margin-bottom: 8px;
}

.feature-item p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* ========== Panorama Section ========== */
.panorama-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.panorama-visual {
    position: relative;
}

.panorama-main {
    width: 100%;
    height: 400px;
    background: linear-gradient(145deg, #1a3a5f, #0a1628);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 102, 255, 0.3);
}

.panorama-main::before {
    content: '360°';
    position: absolute;
    font-size: 100px;
    font-weight: 700;
    color: rgba(0, 102, 255, 0.1);
}

.panorama-icon {
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    box-shadow: var(--shadow-glow);
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

.panorama-feature {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.panorama-feature:hover {
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.3);
}

.panorama-feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.panorama-feature h4 {
    color: var(--white);
    margin-bottom: 6px;
}

.panorama-feature p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* ========== Solutions Section ========== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.solution-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.solution-image {
    height: 240px;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    position: relative;
}

.solution-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(transparent, var(--white));
}

.solution-content {
    padding: 32px;
}

.solution-content h3 {
    margin-bottom: 12px;
}

.solution-content p {
    color: var(--gray-500);
    margin-bottom: 20px;
}

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

.solution-tag {
    background: var(--gray-100);
    color: var(--gray-600);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* ========== Stats Section ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

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

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--gray-400);
    font-size: 1rem;
}

/* ========== Timeline Section ========== */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-cyan), var(--primary-blue));
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 20px 40px;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-dot {
    position: absolute;
    top: 28px;
    width: 16px;
    height: 16px;
    background: var(--accent-cyan);
    border-radius: 50%;
    border: 3px solid var(--primary-dark);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -8px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -8px;
}

.timeline-year {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 4px 16px;
    border-radius: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-content h4 {
    color: var(--white);
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* ========== Certifications Section ========== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.cert-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: var(--transition-normal);
}

.cert-card:hover {
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.3);
    transform: translateY(-5px);
}

.cert-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.cert-card h4 {
    color: var(--white);
    margin-bottom: 8px;
    font-size: 1rem;
}

.cert-card p {
    color: var(--gray-400);
    font-size: 0.85rem;
}

.cert-card .cert-id {
    display: block;
    margin-top: 12px;
    color: var(--accent-cyan);
    font-size: 0.85rem;
    font-family: monospace;
}

/* ========== Team Section ========== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-member {
    text-align: center;
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--white);
}

.team-member h4 {
    color: var(--white);
    margin-bottom: 4px;
}

.team-member p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* ========== News Section ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.news-image {
    height: 200px;
    background: linear-gradient(145deg, #1a3a5f, #0a1628);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.news-content {
    padding: 24px;
}

.news-date {
    color: var(--gray-400);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.news-content h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    transition: var(--transition-fast);
}

.news-card:hover .news-content h3 {
    color: var(--primary-blue);
}

.news-content p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-blue);
    font-size: 0.9rem;
    margin-top: 16px;
    font-weight: 500;
}

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

/* ========== CTA Section ========== */
.cta-section {
    background: var(--gradient-primary);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 32px;
}

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

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

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

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

/* ========== Contact Section ========== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    padding: 40px;
    background: var(--gradient-dark);
    border-radius: 24px;
}

.contact-info h3 {
    color: var(--white);
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 102, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-text h4 {
    color: var(--white);
    margin-bottom: 4px;
    font-size: 1rem;
}

.contact-text p {
    color: var(--gray-400);
    font-size: 0.95rem;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--gray-700);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-200);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-fast);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

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

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

/* ========== Footer ========== */
.footer {
    background: var(--primary-dark);
    padding: 60px 0 30px;
    color: var(--gray-400);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-text {
    color: var(--white);
}

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-links a {
    display: block;
    padding: 6px 0;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 8px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--gray-400);
}

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

/* ========== Page Header ========== */
.page-header {
    background: var(--gradient-hero);
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 40%);
}

.page-header h1 {
    color: var(--white);
    font-size: 2.8rem;
    margin-bottom: 16px;
    position: relative;
}

.page-header p {
    color: var(--gray-300);
    font-size: 1.2rem;
    position: relative;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--gray-400);
}

.breadcrumb a:hover {
    color: var(--white);
}

.breadcrumb span {
    color: var(--accent-cyan);
}

/* ========== Product Detail Page ========== */
.product-hero {
    padding: 160px 0 80px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

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

.product-hero-content h1 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 20px;
}

.product-hero-content h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-hero-content p {
    color: var(--gray-300);
    font-size: 1.2rem;
    margin-bottom: 32px;
}

.product-hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
}

.product-tag {
    background: rgba(0, 102, 255, 0.2);
    border: 1px solid rgba(0, 102, 255, 0.3);
    color: var(--accent-cyan);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
}

.product-visual {
    height: 350px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    border: 1px solid rgba(0, 102, 255, 0.3);
}

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

.function-card {
    background: var(--white);
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: var(--transition-normal);
}

.function-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-blue);
}

.function-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.function-card h4 {
    margin-bottom: 10px;
}

.function-card p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

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

.scenario-item {
    text-align: center;
    padding: 32px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.scenario-item:hover {
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.3);
}

.scenario-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.scenario-item h4 {
    color: var(--white);
    margin-bottom: 8px;
}

.scenario-item p {
    color: var(--gray-400);
    font-size: 0.85rem;
}

/* ========== Advantages Section ========== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-item {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: var(--transition-normal);
}

.advantage-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-blue);
}

.advantage-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    flex-shrink: 0;
}

.advantage-content h4 {
    margin-bottom: 8px;
}

.advantage-content p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

/* ========== News List Page ========== */
.news-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.news-item {
    display: flex;
    gap: 24px;
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.news-item-image {
    width: 200px;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    flex-shrink: 0;
}

.news-item-content {
    padding: 24px;
}

.news-item-content h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    transition: var(--transition-fast);
}

.news-item:hover .news-item-content h3 {
    color: var(--primary-blue);
}

.news-item-content p {
    color: var(--gray-500);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

/* ========== Pagination ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 60px;
}

.pagination a,
.pagination span {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.pagination a {
    background: var(--gray-100);
    color: var(--gray-600);
}

.pagination a:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.pagination .active {
    background: var(--primary-blue);
    color: var(--white);
}

/* ========== Responsive Design ========== */
@media (max-width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .panorama-showcase {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .product-hero-grid {
        grid-template-columns: 1fr;
    }
    
    .functions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding-top: 100px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .products-grid,
    .features-grid,
    .certs-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .solutions-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 20px;
        text-align: left;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 12px;
        right: auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .functions-grid {
        grid-template-columns: 1fr;
    }
    
    .news-list {
        grid-template-columns: 1fr;
    }
    
    .news-item {
        flex-direction: column;
    }
    
    .news-item-image {
        width: 100%;
        height: 180px;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .section-title {
        margin-bottom: 40px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .card {
        padding: 24px;
    }
    
    .product-card {
        padding: 30px 24px;
    }
    
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Animations ========== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ========== Utility Classes ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }

.hidden { display: none; }
.visible { display: block; }