:root {
    --primary: #3b82f6;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --heat: #f97316;
    --heat-light: #fb923c;
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --gradient-heat: linear-gradient(135deg, #3b82f6 0%, #06b6d4 55%, #f97316 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --gradient-hero: linear-gradient(90deg, rgba(2, 6, 23, 0.94) 0%, rgba(15, 23, 42, 0.86) 48%, rgba(15, 23, 42, 0.62) 100%);
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-light: #f8fafc;
    --bg-light-alt: #f1f5f9;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-dark: #0f172a;
    --text-dark-secondary: #475569;
    --border-color: #334155;
    --border-light: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-card: 0 4px 24px rgb(0 0 0 / 0.08);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    background: var(--bg-light);
    color: var(--text-dark);
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

a {
    color: var(--primary);
    transition: all 0.3s ease;
    text-decoration: none;
}

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

p {
    margin-bottom: 1rem;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

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

/* Preloader */
#preloader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
}

.preloader-logo img {
    max-height: 60px;
    margin-bottom: 24px;
}

.preloader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(59, 130, 246, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 0.8s linear infinite;
}

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

/* Header */
#header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.4s ease;
}

#header.header-scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

#logo a img {
    max-height: 44px;
    transition: transform 0.3s ease;
}

#logo:hover a img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu .menu-active a {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.nav-menu .menu-active a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

/* Mobile nav toggle */
#mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

#mobile-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100vh;
    background: var(--bg-dark);
    z-index: 1001;
    padding: 80px 30px 30px;
    transition: right 0.4s ease;
    overflow-y: auto;
}

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

.mobile-nav-list {
    list-style: none;
}

.mobile-nav-list li a {
    color: var(--text-secondary);
    display: block;
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-nav-list li a:hover,
.mobile-nav-list .menu-item-active a {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
}

#mobile-body-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
}

body.mobile-nav-active #mobile-body-overlay {
    display: block;
}

/* Section styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-dark .section-tag {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.25);
    color: var(--primary-light);
}

.section-header h2 {
    font-size: clamp(32px, 5vw, 42px);
    font-weight: 800;
    margin-bottom: 12px;
}

.section-dark .section-header h2 {
    color: var(--text-primary);
}

.section-header p {
    font-size: 18px;
    color: var(--text-dark-secondary);
}

.section-dark .section-header p {
    color: var(--text-muted);
}

.section-bg {
    background: var(--bg-light-alt);
}

.section-dark {
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.section-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.section-wave-bottom {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
}

section {
    padding: 100px 0;
}

@media (max-width: 768px) {
    section { padding: 70px 0; }
    .section-header { margin-bottom: 40px; }
}

/* Intro section */
#intro {
    position: relative;
    min-height: 100vh;
    background: url(../img/guangruan-heating-metering-hero.png) center center / cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#intro::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: 1;
}

.intro-particles {
    position: absolute;
    inset: 0;
    z-index: 2;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    animation: particle-float linear infinite;
}

@keyframes particle-float {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) rotate(720deg); opacity: 0; }
}

.intro-container {
    position: relative;
    z-index: 3;
    width: min(1180px, calc(100% - 48px));
    padding: 120px 0 90px;
}

.intro-hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
    gap: 48px;
    align-items: center;
    margin-bottom: 48px;
}

.intro-copy {
    text-align: left;
}

.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(6, 182, 212, 0.14);
    border: 1px solid rgba(6, 182, 212, 0.32);
    border-radius: 50px;
    font-size: 14px;
    color: #dffcff;
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--heat-light);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

#intro h1 {
    font-size: clamp(42px, 7vw, 72px);
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.1;
}

#intro h1 span {
    display: block;
    background: var(--gradient-heat);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 0.5em;
    margin-top: 8px;
}

.intro-copy > p {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 760px;
}

.intro-buttons {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
    flex-wrap: wrap;
    margin-bottom: 0;
}

.intro-visual {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.35);
    background: rgba(15, 23, 42, 0.72);
}

.intro-visual img {
    width: 100%;
    min-height: 320px;
    height: 100%;
    object-fit: cover;
    display: block;
}

.intro-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2, 6, 23, 0.62), transparent 58%);
    pointer-events: none;
}

.intro-visual-panel {
    position: absolute;
    left: 20px;
    right: 20px;
    bottom: 20px;
    z-index: 2;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(2, 6, 23, 0.68);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(12px);
}

.intro-visual-panel span {
    display: block;
    color: var(--heat-light);
    font-size: 12px;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}

.intro-visual-panel strong {
    color: var(--text-primary);
    font-size: 18px;
}

.btn-primary-gradient {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 15px;
}

.btn-primary-gradient:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.35);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: transparent;
    color: var(--text-primary);
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 15px;
}

.btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.intro-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    padding: 22px 24px;
    background: rgba(2, 6, 23, 0.42);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-suffix {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.3), transparent);
    margin: 8px auto 0;
    animation: scroll-pulse 2s infinite;
}

@keyframes scroll-pulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* About section */
.about-content h3 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.about-intro p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.3s ease;
}

.about-feature:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 20px;
    color: white;
}

.feature-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.feature-text p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.about-image-wrapper {
    position: relative;
}

.about-image-glow {
    position: absolute;
    inset: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    filter: blur(40px);
    opacity: 0.3;
    z-index: 0;
}

.about-image {
    position: relative;
    z-index: 1;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.about-badge-card {
    position: absolute;
    bottom: -20px;
    left: 20px;
    right: 20px;
    z-index: 2;
    display: flex;
    gap: 16px;
    justify-content: center;
}

.badge-item {
    padding: 12px 24px;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.badge-year {
    display: block;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-light);
}

.badge-year .suffix {
    font-size: 16px;
}

.badge-info {
    font-size: 12px;
    color: var(--text-muted);
}

@media (max-width: 991px) {
    .about-features { grid-template-columns: 1fr; }
    .about-image-wrapper { margin-top: 40px; }
}

@media (max-width: 768px) {
    .about-badge-card { flex-direction: column; left: 50%; transform: translateX(-50%); width: fit-content; }
}

/* Products section */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

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

.product-featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
    border-color: rgba(249, 115, 22, 0.35);
    background: linear-gradient(135deg, #ffffff 0%, #f8fbff 60%, #fff7ed 100%);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.12);
}

.product-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.product-featured .product-image {
    aspect-ratio: auto;
    min-height: 100%;
}

.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-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.8) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.btn-product-detail {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-product-detail:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.product-info {
    padding: 24px;
}

.product-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(6, 182, 212, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.product-featured .product-icon {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(249, 115, 22, 0.14));
}

.product-featured .product-icon i {
    color: var(--heat);
}

.product-featured .product-info {
    padding: 32px;
}

.product-featured .product-info h3 {
    font-size: 26px;
}

.product-featured .product-info p {
    font-size: 15px;
}

.product-featured .product-tags .tag {
    color: #7c2d12;
    background: rgba(249, 115, 22, 0.12);
}

.product-icon i {
    font-size: 18px;
    color: var(--primary);
}

.product-info h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-info p {
    font-size: 14px;
    color: var(--text-dark-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.product-tags .tag {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--bg-light-alt);
    border-radius: 50px;
    color: var(--text-dark-secondary);
    font-weight: 500;
}

@media (max-width: 1199px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
    .products-grid { grid-template-columns: 1fr; }
    .product-featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }
}

/* News section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.news-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.news-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

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

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-date-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--gradient-primary);
    border-radius: 12px;
    padding: 8px 12px;
    text-align: center;
    color: white;
    line-height: 1;
}

.news-year {
    display: block;
    font-size: 12px;
    opacity: 0.9;
}

.news-month {
    display: block;
    font-size: 20px;
    font-weight: 700;
}

.news-content {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.news-category {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(59, 130, 246, 0.08);
    padding: 4px 10px;
    border-radius: 50px;
}

.news-read-time {
    font-size: 12px;
    color: var(--text-muted);
}

.news-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.news-content p {
    font-size: 14px;
    color: var(--text-dark-secondary);
    line-height: 1.8;
    flex: 1;
    margin-bottom: 20px;
}

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

.news-link i {
    transition: transform 0.3s ease;
}

.news-link:hover i {
    transform: translateX(4px);
}

@media (max-width: 991px) {
    .news-grid { grid-template-columns: 1fr; }
}

/* Services section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.4s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-image {
    overflow: hidden;
    aspect-ratio: 16/10;
}

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

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-info {
    padding: 28px;
    position: relative;
}

.service-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 42px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.05);
    line-height: 1;
}

.service-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.service-info p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

@media (max-width: 991px) {
    .services-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
}

/* Careers section */
.careers-intro {
    text-align: center;
    margin-bottom: 48px;
}

.careers-intro-content h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
}

.careers-intro-content p {
    font-size: 16px;
    color: var(--text-dark-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
}

.careers-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.careers-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--bg-light-alt);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.careers-stat i {
    color: var(--primary);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.job-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.job-card:hover {
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.1);
    border-color: var(--primary-light);
}

.job-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.job-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.job-icon i {
    font-size: 22px;
    color: white;
}

.job-title-group {
    flex: 1;
}

.job-title-group h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.job-location {
    font-size: 13px;
    color: var(--text-muted);
}

.job-location i {
    font-size: 12px;
    color: var(--primary);
}

.job.salary-label {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
    white-space: nowrap;
}

.job-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.job-tag {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--bg-light-alt);
    border-radius: 50px;
    color: var(--text-dark-secondary);
}

.job-body h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 16px;
    margin-bottom: 8px;
}

.job-body h4:first-child {
    margin-top: 0;
}

.job-body ul {
    list-style: none;
    margin-bottom: 8px;
}

.job-body li {
    font-size: 14px;
    color: var(--text-dark-secondary);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.job-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.careers-cta {
    text-align: center;
    padding: 32px;
    background: var(--bg-light-alt);
    border-radius: var(--radius-lg);
}

.careers-cta p {
    margin-bottom: 20px;
    font-size: 15px;
    color: var(--text-dark-secondary);
}

@media (max-width: 1199px) {
    .jobs-grid { grid-template-columns: 1fr; }
}

/* Contact section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 48px;
}

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

.contact-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-icon i {
    font-size: 20px;
    color: white;
}

.contact-item-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.contact-item-content p {
    font-size: 14px;
    color: var(--text-dark-secondary);
    margin-bottom: 4px;
}

.contact-form-wrapper {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-light);
}

.contact-form h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

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

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

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.required {
    color: var(--danger);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-light);
    color: var(--text-dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: white;
}

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

.btn-submit {
    width: 100%;
    padding: 14px 32px;
    background: var(--gradient-primary);
    color: white;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.35);
}

.form-message {
    text-align: center;
    padding: 14px;
    border-radius: var(--radius-sm);
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.contact-social {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.social-card {
    text-align: center;
    padding: 28px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.social-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.social-card h4 i {
    color: #07c160;
    margin-right: 6px;
}

.social-qr {
    width: 160px;
    height: 160px;
    margin: 0 auto 12px;
    background: var(--bg-light-alt);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.social-qr img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.social-qr i {
    font-size: 48px;
    color: var(--text-muted);
}

.social-card p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 0;
}

@media (max-width: 991px) {
    .contact-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
    .contact-social { grid-template-columns: 1fr; }
    .intro-stats { gap: 20px; }
    .stat-divider { height: 30px; }
}

/* Footer */
#footer {
    background: var(--bg-dark);
    color: var(--text-secondary);
}

.footer-top {
    padding: 60px 0 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand img {
    max-height: 40px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 14px;
    transition: all 0.3s ease;
}

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

.footer-contact ul {
    list-style: none;
}

.footer-contact li {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-contact li i {
    color: var(--primary);
    margin-top: 4px;
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 13px;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--primary-light);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
    color: white;
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive - Mobile nav */
@media (max-width: 991px) {
    #nav-menu-container { display: none; }
    #mobile-nav-toggle { display: block; }
    #header { background: rgba(15, 23, 42, 0.95); }
    .intro-container { width: min(100% - 32px, 760px); padding: 110px 0 80px; }
    .intro-hero-layout { grid-template-columns: 1fr; gap: 28px; }
    .intro-copy { text-align: center; }
    .intro-buttons { justify-content: center; }
    .intro-visual img { min-height: 260px; }
    .intro-stats { gap: 16px; }
    .stat-number { font-size: 28px; }
    .stat-label { font-size: 11px; }
}

@media (max-width: 768px) {
    .careers-stats { gap: 12px; }
    .careers-stat { padding: 8px 16px; font-size: 13px; }
    .job-card { padding: 20px; }
    .contact-form-wrapper { padding: 24px; }
    .social-qr { width: 140px; height: 140px; }
    .stat-divider { display: none; }
    .intro-stats { flex-direction: column; align-items: center; }
}

@media (min-width: 1200px) {
    .products-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    #preloader, #header, #mobile-nav, .back-to-top, .scroll-indicator, .intro-particles { display: none !important; }
    body { background: white; color: black; }
    section { padding: 40px 0; }
    .intro-container { padding: 40px 0; }
}