/* ============================================
   DARI MEDIA - Main Stylesheet
   eDesign Interactive-inspired: bold typography,
   dark/light rhythm, teal accent, editorial pace
   ============================================ */

/* --- CSS Variables --- */
:root {
    --color-primary: #3AADBE;
    --color-primary-light: #4DC4D4;
    --color-primary-dark: #2E8F9D;
    --color-accent: #3AADBE;
    --color-accent-hover: #2E8F9D;
    --color-accent-light: #FFE500;
    --color-highlight: #FFE500;
    --color-dark: #111111;
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f1f3f5;
    --color-gray-200: #e9ecef;
    --color-gray-300: #d7d7d7;
    --color-gray-400: #999999;
    --color-gray-500: #666666;
    --color-gray-600: #444444;
    --color-gray-700: #333333;
    --color-gray-800: #181818;
    --color-gray-900: #111111;
    --color-bg-dark: #0a0a0a;
    --color-bg-history: #1a2a30;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-new-badge: #ef4444;

    --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-base: 1.125rem;
    --font-size-lg: 1.35rem;
    --font-size-xl: 1.625rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.75rem;
    --font-size-4xl: 3.5rem;
    --font-size-5xl: 4.5rem;
    --font-size-6xl: 7rem;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3.5rem;
    --spacing-3xl: 5rem;
    --spacing-4xl: 7rem;
    --spacing-5xl: 10rem;

    --max-width: 1400px;
    --header-height: 5.625rem;
    --border-radius: 0px;
    --border-radius-lg: 0px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
    --easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition: all 0.4s var(--easing);
    --transition-slow: all 0.7s var(--easing);
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-gray-500);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    letter-spacing: -0.02em;
}

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

ul, ol {
    list-style: none;
}

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Focus styles for accessibility */
.btn:focus-visible,
.filter-btn:focus-visible,
.nav-menu a:focus-visible,
.biz-nav a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

body.overflow-hidden {
    overflow: hidden;
}

.field-error {
    border-color: var(--color-new-badge) !important;
}

/* --- Utility Classes --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2.5rem;
}

.section {
    padding: 8rem 0;
}

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

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

.section-title {
    font-size: clamp(2rem, 4vw, var(--font-size-5xl));
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.04em;
    color: var(--color-gray-800);
    line-height: 1.05;
}

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

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-3xl);
    max-width: 640px;
    line-height: 1.9;
}

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

.text-center .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

/* --- Scroll Animation --- */
.fade-in {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.9s var(--easing), transform 0.9s var(--easing);
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.9s var(--easing), transform 0.9s var(--easing);
}

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

.fade-in-right {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.9s var(--easing), transform 0.9s var(--easing);
}

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

/* Staggered animation delays */
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.6s; }
.delay-5 { transition-delay: 0.75s; }
.delay-6 { transition-delay: 0.9s; }

/* --- Badge --- */
.badge-new {
    display: inline-block;
    background: var(--color-new-badge);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 2px 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-left: var(--spacing-sm);
    vertical-align: middle;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: background 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
    background: transparent;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2.5rem;
}

.header-logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-logo img {
    height: 40px;
}

.header-logo .logo-text {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.03em;
    transition: color 0.4s ease;
}

.header.scrolled .header-logo .logo-text {
    color: var(--color-gray-800);
}

.header-logo .logo-sub {
    font-size: var(--font-size-xs);
    color: rgba(255,255,255,0.4);
    display: block;
    margin-top: -2px;
    transition: color 0.4s ease;
}

.header.scrolled .header-logo .logo-sub {
    color: var(--color-gray-400);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-2xl);
}

.nav-menu a {
    color: rgba(255,255,255,0.7);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    letter-spacing: 0.02em;
    text-transform: none;
    transition: color 0.4s ease;
}

.header.scrolled .nav-menu a {
    color: var(--color-gray-800);
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.4s var(--easing);
}

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

.nav-lang {
    display: flex;
    gap: var(--spacing-xs);
}

.nav-lang a {
    color: rgba(255,255,255,0.35);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 10px;
    transition: var(--transition);
}

.header.scrolled .nav-lang a {
    color: var(--color-gray-400);
}

.nav-lang a:hover,
.nav-lang a.active {
    color: var(--color-white);
    background: rgba(255,255,255,0.08);
}

.header.scrolled .nav-lang a:hover,
.header.scrolled .nav-lang a.active {
    color: var(--color-gray-800);
    background: var(--color-gray-100);
}

/* Social Links */
.nav-social {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-sm);
}

.nav-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: rgba(255,255,255,0.4);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.header.scrolled .nav-social a {
    color: var(--color-gray-400);
}

.nav-social a:hover {
    color: var(--color-accent);
    background: rgba(255,255,255,0.06);
}

.header.scrolled .nav-social a:hover {
    color: var(--color-accent);
    background: var(--color-gray-100);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.05);
    color: var(--color-gray-400);
    font-size: var(--font-size-lg);
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.08);
}

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

/* Mobile Menu Toggle */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    padding: 4px 0;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

.header.scrolled .mobile-menu-btn span {
    background: var(--color-gray-800);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation Overlay */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.98);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-nav.open {
    opacity: 1;
    visibility: visible;
}

.mobile-nav a {
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    padding: var(--spacing-md);
    transition: var(--transition);
    letter-spacing: -0.03em;
}

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

.mobile-nav .nav-lang {
    margin-top: var(--spacing-xl);
    gap: var(--spacing-md);
}

.mobile-nav .nav-lang a {
    font-size: var(--font-size-base);
}

.mobile-nav-social {
    font-size: 1.5rem;
    color: var(--color-white);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 800px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-bg-dark);
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120vw;
    height: 120vh;
    min-width: 120%;
    min-height: 120%;
    transform: translate(-50%, -50%);
    object-fit: cover;
    opacity: 0.55;
    border: none;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.5) 0%,
        rgba(0, 0, 0, 0.25) 40%,
        rgba(58, 173, 190, 0.2) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 0 var(--spacing-xl);
    max-width: 1100px;
}

.hero-content .eyebrow {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.hero-content .eyebrow::before,
.hero-content .eyebrow::after {
    content: '';
    width: 60px;
    height: 1px;
    background: var(--color-accent);
    opacity: 0.4;
}

.hero-content h1 {
    font-size: clamp(2.2rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.05em;
    margin-bottom: var(--spacing-2xl);
    text-shadow: none;
}

.hero-content h1 .highlight {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: var(--font-size-xl);
    color: rgba(255,255,255,0.45);
    max-width: 640px;
    margin: 0 auto var(--spacing-3xl);
    line-height: 1.8;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 18px 48px;
    font-size: var(--font-size-sm);
    font-weight: 700;
    transition: var(--transition);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

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

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--color-accent);
    transition: width 0.4s var(--easing);
    z-index: -1;
}

.btn-primary:hover {
    color: var(--color-white);
    transform: none;
}

.btn-primary:hover::before {
    width: 100%;
}

.btn-outline {
    border: 2px solid rgba(255,255,255,0.2);
    color: var(--color-white);
    background: transparent;
}

.btn-outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: rgba(255,255,255,0.08);
    transition: width 0.4s var(--easing);
    z-index: -1;
}

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

.btn-outline:hover::before {
    width: 100%;
}

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

.btn-dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--color-accent);
    transition: width 0.4s var(--easing);
    z-index: -1;
}

.btn-dark:hover {
    color: var(--color-white);
    transform: none;
}

.btn-dark:hover::before {
    width: 100%;
}

.hero-scroll {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: var(--color-white);
    font-size: var(--font-size-xs);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    opacity: 0.3;
    animation: bounce 2.5s infinite;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.hero-scroll .arrow {
    width: 24px;
    height: 24px;
    border-right: 1px solid var(--color-white);
    border-bottom: 1px solid var(--color-white);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-12px); }
    60% { transform: translateX(-50%) translateY(-6px); }
}

/* Floating geometric shapes for hero - subtle */
.hero::after {
    content: '';
    position: absolute;
    top: 15%;
    right: 8%;
    width: 350px;
    height: 350px;
    border: 1px solid rgba(58, 173, 190, 0.12);
    border-radius: 50%;
    z-index: 1;
    animation: float 10s ease-in-out infinite;
}

.hero .shape-1 {
    position: absolute;
    bottom: 20%;
    left: 5%;
    width: 180px;
    height: 180px;
    background: rgba(58, 173, 190, 0.04);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    z-index: 1;
    animation: float 8s ease-in-out infinite reverse;
}

.hero .shape-2 {
    position: absolute;
    top: 25%;
    left: 15%;
    width: 100px;
    height: 100px;
    border: 1px solid rgba(58, 173, 190, 0.08);
    transform: rotate(45deg);
    z-index: 1;
    animation: spin 30s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-25px); }
}

@keyframes spin {
    0% { transform: rotate(45deg); }
    100% { transform: rotate(405deg); }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-item.visible .stat-number {
    animation: countUp 0.6s ease-out forwards;
}

/* ============================================
   ABOUT SUMMARY SECTION
   ============================================ */
.about-summary {
    padding: var(--spacing-5xl) 0;
    background: var(--color-white);
    color: var(--color-gray-800);
}

.about-summary .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-text h2 {
    font-size: clamp(2rem, 4vw, var(--font-size-5xl));
    font-weight: 800;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.04em;
    line-height: 1.05;
    color: var(--color-gray-800);
}

.about-text .lead {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
    line-height: 1.9;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.stat-item {
    background: var(--color-gray-50);
    padding: var(--spacing-2xl) var(--spacing-xl);
    border: 1px solid var(--color-gray-200);
    text-align: center;
    transition: var(--transition);
}

.stat-item:hover {
    border-color: var(--color-accent);
    background: rgba(58, 173, 190, 0.05);
    box-shadow: 0 8px 24px rgba(58, 173, 190, 0.1);
}

.stat-item .stat-number {
    font-size: 4.5rem;
    font-weight: 900;
    color: var(--color-accent);
    display: block;
    letter-spacing: -0.04em;
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    position: relative;
    line-height: 1;
}

.stat-item .stat-number::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--color-accent);
    opacity: 0.5;
}

.stat-item .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-top: var(--spacing-sm);
}

.about-visual {
    position: relative;
}

.about-visual .image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.about-visual .image-grid .img-wrapper {
    overflow: hidden;
    aspect-ratio: 4/3;
    background: rgba(255,255,255,0.05);
}

.about-visual .image-grid .img-wrapper:nth-child(2) {
    margin-top: var(--spacing-2xl);
}

.about-visual .image-grid .img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.about-visual .image-grid .img-wrapper:hover img {
    transform: scale(1.05);
}

/* ============================================
   BUSINESS SECTION (Homepage)
   ============================================ */
.business-section {
    background: linear-gradient(180deg, var(--color-gray-50) 0%, rgba(58, 173, 190, 0.03) 100%);
    padding: var(--spacing-5xl) 0;
    color: var(--color-gray-800);
}

.business-section .section-title {
    color: var(--color-gray-800);
}

.business-section .section-subtitle {
    color: var(--color-gray-500);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.business-card {
    background: var(--color-white);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    border: 1px solid var(--color-gray-200);
}

.business-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(58, 173, 190, 0.15), 0 0 1px rgba(0, 0, 0, 0.1);
    border-color: var(--color-accent);
}

.business-card.featured {
    border: 1px solid var(--color-accent);
}

.business-card .card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--color-gray-100);
    position: relative;
}

.business-card .card-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-accent);
    opacity: 0;
    transition: opacity 0.4s ease;
    mix-blend-mode: multiply;
}

.business-card:hover .card-image::after {
    opacity: 0.4;
}

.card-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-3xl);
}

.card-image-placeholder.gradient-ai { background: linear-gradient(135deg, #2563eb, #7c3aed); }
.card-image-placeholder.gradient-video { background: linear-gradient(135deg, #1e293b, #334155); }
.card-image-placeholder.gradient-online { background: linear-gradient(135deg, #059669, #10b981); }
.card-image-placeholder.gradient-offline { background: linear-gradient(135deg, #d97706, #f59e0b); }
.card-image-placeholder.gradient-design { background: linear-gradient(135deg, #e11d48, #f43f5e); }
.card-image-placeholder.gradient-distribution { background: linear-gradient(135deg, #6366f1, #8b5cf6); }

.business-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.business-card .card-icon {
    width: 56px;
    height: 56px;
    background: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-2xl);
    position: absolute;
    bottom: -28px;
    left: var(--spacing-xl);
    z-index: 2;
}

.business-card.featured .card-icon {
    background: var(--color-white);
    color: var(--color-dark);
}

.business-card .card-body {
    padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-xl);
}

.business-card .card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    color: var(--color-gray-800);
}

.business-card .card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: 1.8;
}

.business-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.02em;
}

.business-card .card-link:hover {
    gap: 16px;
}

.business-card .card-body .card-number {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    color: rgba(255,255,255,0.06);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.05em;
}

.business-card .card-link i {
    transition: transform 0.4s ease;
}

.business-card:hover .card-link i {
    transform: translateX(6px);
}

/* ============================================
   PORTFOLIO SECTION (Homepage)
   ============================================ */
.portfolio-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

/* Portfolio Video Card */
.portfolio-video {
    overflow: hidden;
    background: var(--color-white);
    transition: var(--transition);
    border: 1px solid var(--color-gray-200);
}

.portfolio-video:hover {
    box-shadow: 0 16px 32px rgba(58, 173, 190, 0.12), 0 0 1px rgba(0, 0, 0, 0.08);
    transform: translateY(-6px);
    border-color: var(--color-accent);
}

.portfolio-video .video-wrap {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
}

.portfolio-video .video-wrap iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.portfolio-video .video-info {
    padding: var(--spacing-lg) var(--spacing-xl);
    text-align: left;
}

.portfolio-video .video-info .item-category {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}

.portfolio-video .video-info .item-title {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-gray-800);
    line-height: 1.4;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
    background: var(--color-gray-200);
    cursor: pointer;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.portfolio-item:hover img {
    transform: scale(1.08);
}

.portfolio-item .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 17, 17, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-2xl);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.portfolio-item:hover .overlay {
    opacity: 1;
}

.portfolio-item .overlay .item-category {
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 6px;
}

.portfolio-item .overlay .item-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-white);
}

.portfolio-more {
    text-align: center;
}

/* ============================================
   CLIENTS SECTION
   ============================================ */
.clients-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-white);
    overflow: hidden;
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.clients-section .section-title {
    color: var(--color-gray-800);
}

.clients-section .section-subtitle {
    color: var(--color-gray-500);
}

.clients-marquee {
    display: flex;
    gap: var(--spacing-3xl);
    animation: marquee 30s linear infinite;
}

.clients-marquee:hover {
    animation-play-state: paused;
}

.clients-marquee-reverse {
    animation: marquee-reverse 35s linear infinite;
}

.clients-marquee-reverse:hover {
    animation-play-state: paused;
}

@keyframes marquee-reverse {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

.clients-marquee .client-logo {
    flex-shrink: 0;
    height: 48px;
    opacity: 0.3;
    filter: grayscale(100%) brightness(2);
    transition: var(--transition);
}

.clients-marquee .client-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.clients-track {
    display: flex;
    gap: var(--spacing-3xl);
    width: max-content;
    contain: layout paint;
}

/* Client logo text placeholders */
.client-logo-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px;
    padding: 0 var(--spacing-2xl);
    background: transparent;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: rgba(255,255,255,0.25);
    white-space: nowrap;
    border: 1px solid rgba(255,255,255,0.08);
    transition: var(--transition);
}

.client-logo-item:hover {
    color: var(--color-white);
    border-color: var(--color-accent);
    background: var(--color-accent);
}

/* Client logo image grid (business page) */
.client-logo-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-lg);
    align-items: center;
    justify-items: center;
}

.client-logo-img {
    max-width: 120px;
    max-height: 60px;
    width: auto;
    height: auto;
    object-fit: contain;
    opacity: 0.7;
    transition: var(--transition);
    filter: grayscale(30%);
}

.client-logo-img:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.1);
}

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

@media (max-width: 768px) {
    .client-logo-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    .client-logo-img {
        max-width: 90px;
        max-height: 45px;
    }
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-dark);
    color: var(--color-white);
    text-align: center;
}

.cta-section h2 {
    font-size: clamp(2rem, 4vw, var(--font-size-5xl));
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.04em;
    line-height: 1.05;
}

.cta-section h2::before {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: var(--color-accent);
    margin: 0 auto var(--spacing-xl);
}

.cta-section p {
    font-size: var(--font-size-xl);
    color: rgba(255,255,255,0.35);
    margin-bottom: var(--spacing-3xl);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-gray-400);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    border-top: 1px solid rgba(255,255,255,0.04);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-brand .footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.03em;
}

.footer-brand p {
    font-size: var(--font-size-sm);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: rgba(255,255,255,0.3);
}

.footer-column h4 {
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-xl);
}

.footer-column ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.3);
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--color-accent);
}

.footer-info dt {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.2);
    margin-bottom: 4px;
    margin-top: var(--spacing-lg);
}

.footer-info dt:first-child {
    margin-top: 0;
}

.footer-info dd {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.4);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: rgba(255,255,255,0.2);
}

.footer-tagline {
    text-align: center;
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: var(--spacing-3xl);
}

.footer-tagline span {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: rgba(255,255,255,0.2);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* ============================================
   BUSINESS PAGE
   ============================================ */
.page-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--spacing-5xl) + 3rem) 0 calc(var(--spacing-5xl) + 3rem);
    background: linear-gradient(135deg, #3AADBE 0%, #2E9DAD 50%, #1a7a87 100%);
    color: var(--color-white);
    text-align: center;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255,255,255,0.05) 0%, transparent 50%);
    z-index: 1;
}

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

.page-hero h1 {
    font-size: clamp(2.5rem, 6vw, var(--font-size-6xl));
    font-weight: 900;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.05em;
    color: var(--color-white);
    line-height: 0.95;
}

.page-hero p {
    font-size: var(--font-size-xl);
    color: rgba(255,255,255,0.8);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.8;
}

.page-hero::after {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 250px;
    height: 250px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    z-index: 1;
    animation: float 10s ease-in-out infinite;
}

.page-hero .shape-deco {
    position: absolute;
    bottom: 15%;
    left: 8%;
    width: 150px;
    height: 150px;
    background: rgba(255,255,255,0.05);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    z-index: 1;
    animation: float 8s ease-in-out infinite reverse;
}

/* Business detail sections */
.biz-section {
    padding: var(--spacing-5xl) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.biz-section:last-child {
    border-bottom: none;
}

.biz-header {
    margin-bottom: var(--spacing-3xl);
}

.biz-header .biz-number {
    font-size: var(--font-size-sm);
    font-weight: 800;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-sm);
}

.biz-header h2 {
    font-size: clamp(1.75rem, 3.5vw, var(--font-size-4xl));
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-800);
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.biz-header p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    max-width: 700px;
    line-height: 1.9;
}

/* AI Education Packages */
.package-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.package-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    padding: var(--spacing-3xl) var(--spacing-2xl);
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.package-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.package-card.recommended {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.package-card.recommended::before {
    content: '\uCD94\uCC9C';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 4px 20px;
}

.package-card .package-name {
    font-size: var(--font-size-xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-800);
}

.package-card .package-price {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.03em;
}

.package-card .package-price .unit {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--color-gray-400);
}

.package-card .package-features {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.package-card .package-features li {
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    border-bottom: 1px solid var(--color-gray-100);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.package-card .package-features li::before {
    content: '\2713';
    color: var(--color-success);
    font-weight: 700;
    flex-shrink: 0;
}

/* Service features grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-2xl);
}

.feature-item .feature-icon {
    width: 72px;
    height: 72px;
    background: rgba(58, 173, 190, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin: 0 auto var(--spacing-xl);
    color: var(--color-accent);
}

.feature-item h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-800);
}

.feature-item p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    line-height: 1.8;
}

/* Sub-service list */
.service-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.service-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-2xl);
    background: var(--color-gray-50);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-item:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    border-color: var(--color-gray-200);
}

.service-item .service-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    background: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-xl);
}

.service-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--color-gray-800);
}

.service-item p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-vision {
    padding: var(--spacing-5xl) 0;
}

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

.about-vision blockquote {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-gray-800);
    line-height: 1.2;
    margin-bottom: var(--spacing-2xl);
    letter-spacing: -0.04em;
}

.about-vision blockquote .accent {
    color: var(--color-accent);
}

.about-vision .blockquote-sub {
    font-size: var(--font-size-xl);
}

.vision-text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

.vision-block-second {
    margin-top: var(--spacing-4xl);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--color-gray-200);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.timeline-item .timeline-dot {
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 8px;
    z-index: 1;
    box-shadow: 0 0 0 4px rgba(58, 173, 190, 0.15);
}

.timeline-item .timeline-content {
    width: 45%;
    padding: var(--spacing-xl);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
}

.timeline-item .timeline-year {
    font-size: var(--font-size-base);
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.timeline-item .timeline-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* Team/Capability Section */
.capability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.capability-item {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    background: var(--color-white);
    transition: var(--transition);
    border: 1px solid var(--color-gray-200);
}

.capability-item:hover {
    box-shadow: 0 16px 32px rgba(58, 173, 190, 0.12), 0 0 1px rgba(0, 0, 0, 0.08);
    transform: translateY(-6px);
    border-color: var(--color-accent);
}

.capability-item .cap-icon {
    width: 80px;
    height: 80px;
    background: rgba(58, 173, 190, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    margin: 0 auto var(--spacing-xl);
}

.cap-icon i {
    color: var(--color-accent);
}

.capability-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-800);
}

.capability-item p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* Company Info */
.company-section-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.3;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--color-primary);
    display: inline-block;
}

.company-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.company-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-xl);
}

.company-table tr {
    border-bottom: 1px solid var(--color-gray-200);
}

.company-table tr:last-child {
    border-bottom: none;
}

.company-table td {
    padding: 16px 0;
    font-size: var(--font-size-sm);
}

.company-table td:first-child {
    font-weight: 700;
    color: var(--color-gray-500);
    width: 120px;
}

/* About Stats */
.about-stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.about-stat-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-gray-50);
    border-radius: var(--border-radius-lg);
}

.about-stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-accent);
}

.about-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: 8px;
}

/* History Section Title/Subtitle */
.history-section .section-title {
    color: #fff;
    text-align: center;
}

.history-section .section-subtitle {
    color: rgba(255,255,255,0.5);
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

/* Map Section Subtitle */
.section-subtitle.text-center {
    margin-left: auto;
    margin-right: auto;
}

/* Address Card Icon */
.address-card h3 i {
    color: var(--color-accent);
    margin-right: 8px;
}

/* Map Section */
.map-section {
    padding: var(--spacing-5xl) 0;
}

.map-container {
    overflow: hidden;
    margin-bottom: var(--spacing-3xl);
    border: 1px solid var(--color-gray-200);
}

.map-container iframe {
    width: 100%;
    height: 450px;
    border: none;
}

.address-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.address-card {
    padding: var(--spacing-2xl);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
}

.address-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.address-card p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    line-height: 1.8;
}

/* ============================================
   PORTFOLIO PAGE
   ============================================ */
.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-3xl);
    justify-content: center;
}

.portfolio-filter .filter-btn {
    padding: 10px 28px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1px solid var(--color-gray-200);
    color: var(--color-gray-500);
    background: var(--color-white);
    transition: var(--transition);
}

.portfolio-filter .filter-btn:hover,
.portfolio-filter .filter-btn.active {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.portfolio-full-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    contain: layout;
}

.portfolio-full-grid .portfolio-item {
    aspect-ratio: 4/3;
}

.portfolio-full-grid .portfolio-item[data-category] {
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.portfolio-full-grid .portfolio-item.hidden,
.portfolio-full-grid .portfolio-video.hidden {
    display: none;
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.lightbox.open {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
}

.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    color: var(--color-white);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition);
}

.lightbox-close:hover {
    opacity: 1;
}

.lightbox-info {
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
}

.lightbox-info .lb-category {
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 700;
}

.lightbox-info .lb-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-info-list {
    margin-bottom: var(--spacing-3xl);
}

.contact-info-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.contact-info-item .info-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    background: rgba(58, 173, 190, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-accent);
}

.contact-info-item h3 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}

.contact-info-item p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-800);
    line-height: 1.6;
}

/* Contact Form */
.contact-form {
    background: var(--color-gray-50);
    padding: var(--spacing-3xl);
    border: 1px solid var(--color-gray-200);
}

.contact-form h3 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-gray-800);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--color-gray-200);
    background: var(--color-white);
    transition: var(--transition);
    font-size: var(--font-size-base);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.form-radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.form-radio-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    cursor: pointer;
    padding: 10px 20px;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.form-radio-group input[type="radio"] {
    width: auto;
    accent-color: var(--color-accent);
}

.form-radio-group label:has(input:checked) {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.form-submit {
    margin-top: var(--spacing-xl);
}

.form-submit .btn {
    width: 100%;
    justify-content: center;
    padding: 18px;
}

/* ============================================
   BUSINESS NAV (Sticky sidebar for business page)
   ============================================ */
.biz-nav {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-xl));
    z-index: 100;
    background: var(--color-white);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    border: 1px solid var(--color-gray-200);
}

.biz-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.biz-nav a {
    display: block;
    padding: 10px 24px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-500);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.biz-nav a:hover,
.biz-nav a.active {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

/* Business Page - AI Section */
.biz-highlight-banner {
    background: linear-gradient(135deg, #0d4f6e, #1a7a9e);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-4xl);
    color: #fff;
    text-align: center;
}

.biz-highlight-banner p {
    font-size: var(--font-size-lg);
    margin: 0;
}

.biz-highlight-banner strong {
    font-size: var(--font-size-xl);
}

.biz-subsection {
    margin-bottom: var(--spacing-4xl);
}

.biz-subsection-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.biz-subsection-title-lg {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
}

.biz-subsection-desc {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
}

.biz-subsection-desc-narrow {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
}

.biz-icon-accent {
    color: var(--color-accent);
    margin-right: 8px;
}

.features-grid-gap-top {
    margin-top: var(--spacing-xl);
}

.features-grid-gap-bottom {
    margin-bottom: var(--spacing-2xl);
}

.features-grid-gap-bottom-lg {
    margin-bottom: var(--spacing-3xl);
}

/* Education Track Cards */
.edu-track-cyan {
    border-left: 4px solid #00bcd4;
}

.edu-track-blue {
    border-left: 4px solid #2196f3;
}

.edu-track-purple {
    border-left: 4px solid #9c27b0;
}

.edu-track-audience {
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    margin-bottom: 8px;
}

.edu-track-list {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    list-style: none;
    padding: 0;
}

.edu-track-effect {
    font-size: var(--font-size-xs);
    font-weight: 700;
    margin-top: 12px;
}

.edu-track-effect-cyan {
    color: #00bcd4;
}

.edu-track-effect-blue {
    color: #2196f3;
}

.edu-track-effect-purple {
    color: #9c27b0;
}

/* Package Section */
.biz-section-heading {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.package-tagline {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-md);
}

.package-tagline-accent {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.package-note {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-lg);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-outline-gray {
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

/* Web Design Pricing */
.web-pricing-box {
    border: 2px solid var(--color-primary);
    padding: var(--spacing-xl) var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
    text-align: center;
    background: rgba(58, 173, 190, 0.04);
}

.web-pricing-box .pricing-amount {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.web-pricing-box .pricing-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin: 0;
}

/* Process steps */
.process-steps {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    counter-reset: step;
}

.process-step {
    flex: 1;
    min-width: 140px;
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--color-gray-50);
    position: relative;
    border: 1px solid var(--color-gray-200);
}

.process-step::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 900;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.03em;
}

.process-step p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
}

/* ============================================
   COMPANY HISTORY TIMELINE
   ============================================ */
.history-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-history);
    color: var(--color-white);
}

.history-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-2xl) 0;
}

.history-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(58, 173, 190, 0.3);
    transform: translateX(-50%);
}

.history-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.history-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 8px;
    width: 14px;
    height: 14px;
    background: var(--color-accent);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(58, 173, 190, 0.2);
}

.history-item .history-year {
    width: 45%;
    text-align: right;
    padding-right: var(--spacing-2xl);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-accent);
}

.history-item .history-content {
    width: 45%;
    padding-left: var(--spacing-2xl);
    margin-left: auto;
}

.history-item .history-content p {
    font-size: var(--font-size-base);
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
}

.history-item:nth-child(even) {
    flex-direction: row-reverse;
}

.history-item:nth-child(even) .history-year {
    text-align: left;
    padding-left: var(--spacing-2xl);
    padding-right: 0;
}

.history-item:nth-child(even) .history-content {
    text-align: right;
    padding-right: var(--spacing-2xl);
    padding-left: 0;
    margin-left: 0;
    margin-right: auto;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .fade-in, .fade-in-left, .fade-in-right {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}