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

:root {
    --primary-dark: #0a1628;
    --primary-blue: #00d4ff;
    --secondary-blue: #0066ff;
    --accent-cyan: #00f7ff;
    --text-white: #ffffff;
    --text-gray: #b0b8c8;
    --text-dark: #1a1a2e;
    --bg-light: #f5f7fa;
    --gradient-blue: linear-gradient(135deg, #0a1628 0%, #1a2a4a 50%, #0a1628 100%);
    --gradient-accent: linear-gradient(90deg, #00d4ff 0%, #0066ff 100%);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 212, 255, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--primary-dark);
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

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

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

/* ===== Navigation ===== */
.navbar {
    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(0, 212, 255, 0.1);
    transition: var(--transition);
}

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

.nav-logo img {
    height: 45px;
    width: auto;
}

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

.nav-menu a {
    color: var(--text-white);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

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

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

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

.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-blue);
    font-weight: 600;
}

.nav-phone svg {
    width: 18px;
    height: 18px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-white);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    background: var(--gradient-blue);
    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(circle at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 102, 255, 0.1) 0%, transparent 40%),
        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='%2300d4ff' fill-opacity='0.03'%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");
    animation: bgMove 30s linear infinite;
}

@keyframes bgMove {
    0% { background-position: 0 0, 0 0, 0 0; }
    100% { background-position: 0 0, 0 0, 60px 60px; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    padding: 8px 20px;
    margin-bottom: 30px;
    color: var(--primary-blue);
    font-size: 14px;
    font-weight: 500;
}

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

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

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--text-white);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.hero-visual {
    position: absolute;
    right: -5%;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    max-width: 700px;
    opacity: 0.8;
}

.hero-visual svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 60px rgba(0, 212, 255, 0.3));
}

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

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

.section-label {
    display: inline-block;
    color: var(--primary-blue);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 15px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Features Section ===== */
.features {
    background: var(--primary-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-blue);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary-blue);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 12px;
}

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

/* ===== Products Section ===== */
.products {
    background: linear-gradient(180deg, var(--primary-dark) 0%, #0d1a2d 100%);
}

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

.product-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.product-image {
    height: 240px;
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image::before {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.product-image svg {
    width: 120px;
    height: 120px;
    color: var(--primary-blue);
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

.product-info {
    padding: 30px;
}

.product-tag {
    display: inline-block;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-blue);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 15px;
}

.product-info h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 12px;
}

.product-info p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 14px;
}

.product-link:hover {
    gap: 12px;
}

/* ===== Solutions Section ===== */
.solutions {
    background: var(--primary-dark);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 380px;
    cursor: pointer;
    group: true;
}

.solution-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-blue);
}

.solution-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 22, 40, 0.9) 100%);
}

.solution-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 40px;
}

.solution-icon {
    width: 70px;
    height: 70px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.solution-icon svg {
    width: 35px;
    height: 35px;
    color: var(--primary-blue);
}

.solution-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 12px;
}

.solution-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
}

.solution-card:hover p {
    opacity: 1;
    transform: translateY(0);
}

.solution-card:hover .solution-bg::before {
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.1) 0%, rgba(10, 22, 40, 0.95) 100%);
}

/* ===== About Section ===== */
.about {
    background: linear-gradient(180deg, #0d1a2d 0%, var(--primary-dark) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 25px;
    line-height: 1.3;
}

.about-text h2 span {
    color: var(--primary-blue);
}

.about-text p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.9;
    margin-bottom: 20px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-gray);
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-visual svg {
    width: 100%;
    max-width: 400px;
    opacity: 0.6;
}

/* ===== CTA Section ===== */
.cta {
    background: var(--gradient-blue);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%2300d4ff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
    pointer-events: none;
}

.cta h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 15px;
    position: relative;
}

.cta p {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 35px;
    position: relative;
}

/* ===== Footer ===== */
.footer {
    background: #050d18;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 50px;
}

.footer-brand img {
    height: 50px;
    margin-bottom: 20px;
}

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

.footer-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 25px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 12px;
}

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

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 15px;
}

.footer-contact svg {
    width: 16px;
    height: 16px;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--text-gray);
}

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

/* ===== Page Header ===== */
.page-header {
    padding: 180px 0 100px;
    background: var(--gradient-blue);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(0, 102, 255, 0.08) 0%, transparent 50%);
}

.page-header h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-white);
    position: relative;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    color: var(--text-gray);
    position: relative;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    font-size: 14px;
    position: relative;
}

.breadcrumb a {
    color: var(--primary-blue);
}

.breadcrumb span {
    color: var(--text-gray);
}

/* ===== Products Page ===== */
.products-list {
    display: grid;
    gap: 40px;
}

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    padding: 50px;
}

.product-detail:nth-child(even) {
    direction: rtl;
}

.product-detail:nth-child(even) > * {
    direction: ltr;
}

.product-detail-image {
    height: 300px;
    background: var(--gradient-blue);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-detail-image svg {
    width: 150px;
    height: 150px;
    color: var(--primary-blue);
    opacity: 0.7;
}

.product-detail-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 15px;
}

.product-detail-info .product-tag {
    margin-bottom: 20px;
}

.product-detail-info p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.product-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.product-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-gray);
}

.product-feature::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--primary-blue);
    border-radius: 50%;
}

/* ===== Solutions Page ===== */
.solutions-detail {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.solution-detail-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    padding: 40px;
    transition: var(--transition);
}

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

.solution-detail-card svg {
    width: 60px;
    height: 60px;
    color: var(--primary-blue);
    margin-bottom: 25px;
}

.solution-detail-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 15px;
}

.solution-detail-card p {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===== About Page ===== */
.about-section {
    background: var(--primary-dark);
}

.about-full {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-full h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 30px;
}

.about-full p {
    font-size: 18px;
    color: var(--text-gray);
    line-height: 2;
    margin-bottom: 20px;
}

.core-tech {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 80px;
}

.core-tech-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 35px 25px;
    text-align: center;
}

.core-tech-card svg {
    width: 50px;
    height: 50px;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.core-tech-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 10px;
}

.core-tech-card p {
    font-size: 14px;
    color: var(--text-gray);
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    padding: 50px;
}

.contact-info h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-blue);
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 5px;
}

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

.contact-form {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255,  255, 255, 0.08);
    border-radius: var(--border-radius);
    padding: 50px;
}

.contact-form h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-white);
    margin-bottom: 10px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-white);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    background: rgba(0, 212, 255, 0.05);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 42px;
    }

    .hero-visual {
        display: none;
    }

    .features-grid,
    .products-grid,
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-detail {
        grid-template-columns: 1fr;
    }

    .product-detail:nth-child(even) {
        direction: ltr;
    }

    .solutions-detail {
        grid-template-columns: repeat(2, 1fr);
    }

    .core-tech {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, 0.98);
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        padding-top: 100px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 32px;
    }

    .features-grid,
    .products-grid,
    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .page-header h1 {
        font-size: 36px;
    }

    .product-detail {
        padding: 30px;
    }

    .product-features {
        grid-template-columns: 1fr;
    }

    .solutions-detail,
    .core-tech {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .cta h2 {
        font-size: 28px;
    }
}