/* 5S IT Services - Professional Website Styles */

:root {
    --primary: #01519a;
    --primary-dark: #013d75;
    --primary-light: #e6f0fa;
    --secondary: #1E293B;
    --secondary-dark: #0F172A;
    --accent: #F59E0B;
    --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;
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-800);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-wrap: break-word;
}

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

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

ul {
    list-style: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: var(--white);
    padding: 8px 16px;
    z-index: 1001;
    transition: top 0.3s;
    font-weight: 600;
}

.skip-link:focus {
    top: 0;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 640px) {
    .container {
        padding: 0 24px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 32px;
    }
}

.section {
    padding: 64px 0;
}

@media (min-width: 768px) {
    .section {
        padding: 100px 0;
    }
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
}

@media (min-width: 768px) {
    .section-header {
        margin-bottom: 60px;
    }
}

.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 16px;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

.section-title span {
    color: var(--primary);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.7;
}

@media (min-width: 768px) {
    .section-subtitle {
        font-size: 1.15rem;
    }
}

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

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

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

.section-dark .section-subtitle {
    color: var(--gray-300);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(1, 81, 154, 0.35);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(1, 81, 154, 0.45);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-light:hover {
    background-color: var(--white);
    color: var(--primary);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-white {
    background-color: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background-color: var(--gray-50);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 76px;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.98);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--gray-900);
}

.logo-img {
    height: 48px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    display: block;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(1, 81, 154, 0.3);
}

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

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-600);
    position: relative;
    padding: 6px 0;
}

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

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

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-900);
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.mobile-toggle:hover {
    background-color: var(--gray-100);
}

/* Hero */
.hero {
    padding: 140px 0 80px;
    background: #0d1f38;
    position: relative;
    overflow: hidden;
    min-height: auto;
    display: flex;
    align-items: center;
}

@media (min-width: 768px) {
    .hero {
        padding: 180px 0 140px;
        min-height: calc(100vh - 76px);
    }
}

.hero::before {
    display: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 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='0.03'%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");
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

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

.hero-content {
    max-width: 620px;
}

@media (min-width: 1024px) {
    .hero-content {
        max-width: 560px;
    }
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
}

.hero-label i {
    color: var(--accent);
}

.hero-title {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--white);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4.5rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 5rem;
    }
}

.hero-title span {
    color: var(--primary);
}

.hero-text {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 32px;
    max-width: 560px;
    line-height: 1.8;
}

@media (min-width: 768px) {
    .hero-text {
        font-size: 1.2rem;
    }
}

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

.hero-trust {
    display: flex;
    gap: 32px;
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    justify-content: flex-start;
}

@media (min-width: 768px) {
    .hero-trust {
        gap: 48px;
        justify-content: center;
    }
}

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

.trust-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1rem;
}

.trust-content strong {
    display: block;
    font-size: 0.95rem;
    color: var(--white);
    font-weight: 600;
}

.trust-content span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.hero-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.15) 20%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.85) 55%, #000 70%);
    mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.15) 20%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.85) 55%, #000 70%);
}

.hero-visual::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, #0d1f38 0%, rgba(10, 22, 40, 0.7) 20%, rgba(10, 22, 40, 0.4) 40%, transparent 60%);
    pointer-events: none;
}

@media (max-width: 767px) {
    .hero-visual {
        position: relative;
        width: 100%;
        height: 280px;
    }

    .hero-visual img {
        -webkit-mask-image: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.5) 20%, #000 50%);
        mask-image: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.5) 20%, #000 50%);
    }

    .hero-visual::after {
        background: linear-gradient(to bottom, var(--gray-900) 0%, rgba(10, 22, 40, 0.4) 25%, transparent 60%);
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hero-visual {
        width: 50%;
    }
}

/* Trust Bar */
.trust-bar {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-100);
    padding: 32px 0;
}

@media (min-width: 768px) {
    .trust-bar {
        padding: 40px 0;
    }
}

.trust-bar-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

@media (min-width: 768px) {
    .trust-bar-content {
        gap: 32px;
    }
}

.trust-bar-text {
    font-size: 0.95rem;
    color: var(--gray-500);
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (min-width: 768px) {
    .trust-bar-text {
        font-size: 1rem;
    }
}

.trust-bar-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

@media (min-width: 768px) {
    .trust-bar-items {
        gap: 32px;
    }
}

.trust-bar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    background-color: var(--gray-50);
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid var(--gray-200);
}

@media (min-width: 768px) {
    .trust-bar-item {
        font-size: 0.95rem;
        padding: 10px 20px;
    }
}

.trust-bar-item i {
    color: var(--primary);
    font-size: 0.9rem;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 640px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

@media (min-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.card {
    background-color: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .card {
        padding: 36px;
    }
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(1, 81, 154, 0.08) 100%);
    color: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 24px;
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.card p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
    flex-grow: 1;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.95rem;
}

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

.card-link i {
    font-size: 0.85rem;
}

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

.feature-card {
    background-color: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .feature-card {
        padding: 40px;
    }
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

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

.feature-card .card-icon {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
    margin-bottom: 28px;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--gray-900);
}

.feature-card p {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 24px;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--primary);
    font-size: 0.95rem;
}

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

.section-cta {
    text-align: center;
    margin-top: 48px;
}

@media (min-width: 768px) {
    .section-cta {
        margin-top: 64px;
    }
}

/* Parallax Backgrounds */
.parallax-section {
    position: relative;
    overflow: hidden;
}

.parallax-bg {
    position: absolute;
    top: -15%;
    left: 0;
    width: 100%;
    height: 130%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    opacity: 0.12;
    transform: translateY(0);
    will-change: transform;
}

.parallax-section .container {
    position: relative;
    z-index: 1;
}

.parallax-services .parallax-bg {
    background-image: url('../image/parallax-motherboard.jpg');
}

.parallax-process .parallax-bg {
    background-image: url('../image/parallax-fiber.jpg');
}

.parallax-cta .parallax-bg {
    background-image: url('../image/hero-server.jpg');
    opacity: 0.18;
}

@media (max-width: 767px) {
    .parallax-bg {
        top: 0;
        height: 100%;
        opacity: 0.08;
    }
}

@media (prefers-reduced-motion: reduce) {
    .parallax-bg {
        transform: none !important;
    }
}

/* Stats */
.stats {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    padding: 64px 0;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .stats {
        padding: 100px 0;
    }
}

.stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 20%, rgba(1, 81, 154, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 1;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr 1.5fr;
        gap: 64px;
    }
}

.stats-headline {
    max-width: 400px;
}

.stats-headline h2 {
    font-size: 1.85rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .stats-headline h2 {
        font-size: 2.5rem;
    }
}

.stats-headline h2 span {
    color: var(--primary);
}

.stats-headline p {
    color: var(--gray-300);
    font-size: 1rem;
    line-height: 1.7;
}

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

@media (min-width: 640px) {
    .stats-items {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

.stat-item {
    padding: 24px;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    text-align: left;
}

@media (min-width: 768px) {
    .stat-item {
        padding: 32px;
    }
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
    display: block;
}

@media (min-width: 768px) {
    .stat-number {
        font-size: 3.5rem;
    }
}

.stat-label {
    font-size: 1rem;
    color: var(--gray-300);
    font-weight: 500;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
        gap: 60px;
    }
}

.about-content h2 {
    font-size: 1.85rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--gray-900);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .about-content h2 {
        font-size: 2.5rem;
        margin-bottom: 24px;
    }
}

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

.about-content p {
    font-size: 1.05rem;
    color: var(--gray-500);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-list {
    margin: 28px 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 1rem;
    color: var(--gray-600);
}

.about-list li i {
    color: var(--primary);
    margin-top: 4px;
    font-size: 1.1rem;
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
    aspect-ratio: 4 / 3;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Process */
.process {
    background-color: var(--white);
}

.process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    position: relative;
}

@media (min-width: 768px) {
    .process-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .process-grid::before {
        content: '';
        position: absolute;
        top: 40px;
        left: 12.5%;
        width: 75%;
        height: 2px;
        background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
        opacity: 0.2;
    }
}

.process-step {
    position: relative;
    text-align: center;
    z-index: 1;
}

.process-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0 auto 24px;
    box-shadow: 0 12px 24px rgba(1, 81, 154, 0.25);
    position: relative;
}

.process-step h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.process-step p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* Industries */
.industries-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .industries-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.industry-card {
    background-color: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.industry-card .card-icon {
    margin: 0 auto 20px;
}

.industry-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.industry-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* CTA Banner */
.cta-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, #013d75 50%, #0a1628 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .cta-banner {
        padding: 120px 0;
    }
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.cta-banner .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: center;
}

@media (min-width: 768px) {
    .cta-banner .container {
        grid-template-columns: 1.2fr 0.8fr;
        gap: 64px;
        text-align: left;
    }
}

.cta-banner h2 {
    font-size: 1.85rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .cta-banner h2 {
        font-size: 2.75rem;
    }
}

.cta-banner p {
    font-size: 1rem;
    max-width: 540px;
    margin-bottom: 28px;
    opacity: 0.9;
    line-height: 1.7;
}

@media (min-width: 768px) {
    .cta-banner p {
        font-size: 1.15rem;
        margin-bottom: 32px;
    }
}

.cta-banner .btn-white {
    width: 100%;
}

@media (min-width: 768px) {
    .cta-banner .btn-white {
        width: auto;
    }
}

.cta-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
}

.cta-feature i {
    color: var(--accent);
    font-size: 1.1rem;
}

/* Page Header */
.page-header {
    padding: 130px 0 56px;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .page-header {
        padding: 160px 0 80px;
    }
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(1, 81, 154, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: 0;
}

.page-header-services .page-header-bg {
    background-image: url('../image/services-datacenter.jpg');
}

.page-header-contact .page-header-bg {
    background-image: url('../image/contact-laptop.jpg');
}

.page-header-about .page-header-bg {
    background-image: url('../image/about-server.jpg');
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 16px;
}

@media (min-width: 768px) {
    .page-header h1 {
        font-size: 3rem;
    }
}

.page-header p {
    font-size: 1rem;
    color: var(--gray-300);
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .page-header p {
        font-size: 1.15rem;
    }
}

/* Services Page */
.service-detail {
    background-color: var(--white);
}

.service-detail-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .service-detail-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .service-detail-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }
}

.service-detail-card {
    background-color: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    .service-detail-card {
        padding: 40px;
    }
}

.service-detail-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.service-detail-card .card-icon {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
}

.service-detail-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.service-detail-card > p {
    font-size: 1rem;
    color: var(--gray-500);
    margin-bottom: 24px;
    line-height: 1.7;
}

.service-detail-card ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-detail-card ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--gray-600);
}

.service-detail-card ul li i {
    color: var(--primary);
    font-size: 0.85rem;
}

/* Service Areas */
.areas-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 40px;
}

.area-tag {
    background-color: var(--white);
    color: var(--gray-700);
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    .area-tag {
        padding: 12px 28px;
        font-size: 1rem;
    }
}

.area-tag:hover {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.areas-note {
    text-align: center;
    color: var(--gray-500);
    font-size: 1.05rem;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 0.9fr 1.1fr;
        gap: 60px;
    }
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .contact-info h3 {
        font-size: 1.75rem;
        margin-bottom: 20px;
    }
}

.contact-info > p {
    color: var(--gray-500);
    margin-bottom: 28px;
    font-size: 1rem;
    line-height: 1.7;
}

@media (min-width: 768px) {
    .contact-info > p {
        margin-bottom: 36px;
        font-size: 1.05rem;
    }
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

@media (min-width: 768px) {
    .contact-list {
        gap: 28px;
    }
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

@media (min-width: 768px) {
    .contact-item {
        gap: 18px;
    }
}

.contact-item-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(1, 81, 154, 0.08) 100%);
    color: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.contact-item-content strong {
    display: block;
    font-size: 1.05rem;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.contact-item-content p {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 6px;
}

.contact-item-content p:last-child {
    margin-bottom: 0;
}

.contact-item-content a {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.contact-item-content a:hover {
    color: var(--primary);
}

.contact-form-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group label .required {
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--gray-900);
    background-color: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--white);
    box-shadow: 0 0 0 3px rgba(1, 81, 154, 0.15);
}

.form-control::placeholder {
    color: var(--gray-400);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M8 11.5a.5.5 0 0 1-.354-.146l-4-4a.5.5 0 1 1 .708-.708L8 10.293l3.646-3.647a.5.5 0 0 1 .708.708l-4 4A.5.5 0 0 1 8 11.5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 48px;
}

textarea.form-control {
    resize: vertical;
    min-height: 130px;
}

.form-status {
    margin-top: 16px;
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #DCFCE7;
    color: #166534;
    border: 1px solid #BBF7D0;
}

.form-status.error {
    display: block;
    background-color: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.form-status.loading {
    display: block;
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border: 1px solid rgba(1, 81, 154, 0.2);
}

/* Footer */
.footer {
    background-color: #0a1628;
    color: var(--white);
    padding: 64px 0 24px;
    position: relative;
}

@media (min-width: 768px) {
    .footer {
        padding: 100px 0 24px;
    }
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 10% 10%, rgba(1, 81, 154, 0.15) 0%, transparent 40%);
    pointer-events: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 48px;
    position: relative;
    z-index: 1;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 48px;
        margin-bottom: 60px;
    }
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 320px;
    margin-bottom: 24px;
}

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

.footer-links h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-contact p {
    color: var(--gray-400);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 8px;
}

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

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

.social-link {
    width: 42px;
    height: 42px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--gray-500);
    font-size: 0.85rem;
    position: relative;
    z-index: 1;
}

/* Responsive */
@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
    }
}

@media (max-width: 767px) {
    .mobile-toggle {
        display: block;
    }

    .nav {
        position: fixed;
        top: 76px;
        left: 0;
        width: 100%;
        height: calc(100vh - 76px);
        height: calc(100dvh - 76px);
        background-color: var(--white);
        flex-direction: column;
        padding: 32px 16px;
        gap: 24px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-lg);
        align-items: flex-start;
        overflow-y: auto;
    }

    @media (min-width: 640px) {
        .nav {
            padding: 40px 24px;
        }
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
        width: 100%;
    }

    .nav-link {
        font-size: 1.2rem;
    }

    .nav .btn {
        width: 100%;
    }

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

    .hero-actions .btn {
        width: 100%;
    }

    .hero-trust {
        flex-direction: column;
        gap: 20px;
        margin-top: 40px;
        padding-top: 32px;
    }

    .hero-label {
        margin-bottom: 20px;
    }

    .page-header h1 {
        font-size: 1.85rem;
    }

    .contact-form-card {
        padding: 28px;
    }

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

    .trust-bar-content {
        justify-content: center;
    }

    .testimonial-card {
        padding: 28px;
    }

    .faq-question {
        padding: 20px 24px;
    }

    .faq-answer-content {
        padding: 0 24px 20px;
    }

    .back-to-top {
        width: 44px;
        height: 44px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 479px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.65rem;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    .btn {
        padding: 12px 24px;
    }

    .btn-lg {
        padding: 14px 28px;
    }

    .client-logo {
        font-size: 1rem;
    }

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

    .stats-items {
        grid-template-columns: 1fr;
    }
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 48px;
    height: 48px;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(1, 81, 154, 0.35);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

/* Client Logos */
.client-logos {
    background-color: var(--white);
    border-top: 1px solid var(--gray-100);
    border-bottom: 1px solid var(--gray-100);
    padding: 48px 0;
}

.client-logos-content {
    text-align: center;
}

.client-logos-text {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
    margin-bottom: 28px;
}

.client-logos-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 32px;
}

@media (min-width: 768px) {
    .client-logos-grid {
        gap: 48px;
    }
}

.client-logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-400);
    transition: var(--transition);
}

@media (min-width: 768px) {
    .client-logo {
        font-size: 1.25rem;
    }
}

.client-logo:hover {
    color: var(--primary);
}

/* Testimonials */
.testimonials {
    background-color: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.testimonial-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.testimonial-quote {
    font-size: 1.05rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-quote::before {
    content: '"';
    font-size: 3rem;
    color: var(--primary-light);
    font-weight: 800;
    line-height: 1;
    display: block;
    margin-bottom: 8px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.testimonial-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.testimonial-info strong {
    display: block;
    color: var(--gray-900);
    font-weight: 700;
}

.testimonial-info span {
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 28px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question i {
    color: var(--primary);
    transition: var(--transition);
    font-size: 1rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-content {
    padding: 0 28px 24px;
    color: var(--gray-500);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}