/* ===== CSS Variables ===== */
:root {
    --primary: #0066CC;
    --primary-dark: #004C99;
    --primary-light: #E6F0FF;
    --secondary: #00B4D8;
    --accent: #00D4AA;
    --dark: #0A1628;
    --dark-2: #1A2744;
    --gray-900: #1a1a2e;
    --gray-700: #4a4a5a;
    --gray-500: #7a7a8a;
    --gray-300: #c4c4d4;
    --gray-100: #f0f2f5;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #0066CC 0%, #00B4D8 100%);
    --gradient-hero: linear-gradient(135deg, #0A1628 0%, #1A2744 50%, #0A1628 100%);
    --gradient-text: linear-gradient(135deg, #0066CC 0%, #00B4D8 50%, #00D4AA 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-card: 0 4px 20px rgba(0,102,204,0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-700);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}

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

ul { list-style: none; }

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Text Utilities ===== */
.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
    position: relative;
    padding-left: 40px;
}

.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 2px;
    background: var(--gradient-primary);
    transform: translateY(-50%);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .section-tag {
    padding-left: 0;
}

.section-header .section-tag::before {
    display: none;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.3;
    margin-bottom: 16px;
}

.section-title.left-align {
    text-align: left;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 560px;
    margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0,102,204,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,102,204,0.4);
}

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

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

.btn-white {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.5);
}

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

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

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.header.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

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

.logo-sub {
    font-size: 0.6rem;
    font-weight: 400;
    opacity: 0.7;
    letter-spacing: 1px;
}

/* Navigation */
.nav-list {
    display: flex;
    gap: 4px;
}

.nav-item > a {
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.header.scrolled .nav-item > a {
    color: var(--gray-700);
}

.nav-item > a:hover,
.nav-item.active > a {
    color: var(--white);
    background: rgba(255,255,255,0.1);
}

.header.scrolled .nav-item > a:hover,
.header.scrolled .nav-item.active > a {
    color: var(--primary);
    background: var(--primary-light);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown li a {
    display: block;
    padding: 10px 16px;
    font-size: 0.9rem;
    color: var(--gray-700);
    border-radius: var(--radius-sm);
}

.dropdown li a:hover,
.dropdown li a.active {
    color: var(--primary);
    background: var(--primary-light);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
    border-radius: 2px;
}

.header.scrolled .mobile-toggle span {
    background: var(--dark);
}

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

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

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

/* 모바일 메뉴 열린 상태: 헤더 배경 투명으로 */
.header.nav-open,
.header.nav-open.scrolled {
    background: transparent !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
}

.header.nav-open .logo-text,
.header.nav-open.scrolled .logo-text {
    color: var(--white);
}

.header.nav-open .mobile-toggle span,
.header.nav-open.scrolled .mobile-toggle span {
    background: var(--white);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,102,204,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0,180,216,0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(0,212,170,0.08) 0%, transparent 50%);
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 120px 0 80px;
}

.hero-subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--secondary);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.25;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
    max-width: 500px;
}

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

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 15px;
    position: relative;
}

.hero-scroll a span {
    position: absolute;
    top: 8px;
    left: 50%;
    width: 6px;
    height: 6px;
    margin-left: -3px;
    background: var(--white);
    border-radius: 50%;
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(20px); opacity: 0; }
}

/* ===== Services ===== */
.services {
    padding: 120px 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    position: relative;
    padding: 48px 36px;
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.service-card.featured {
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    transform: scale(1.02);
}

.service-card.featured:hover {
    transform: scale(1.02) translateY(-8px);
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.2);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.service-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 28px;
}

.service-card.featured .service-icon {
    background: rgba(255,255,255,0.15);
    color: var(--white);
}

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

.service-card.featured h3 { color: var(--white); }

.service-card > p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 24px;
    color: var(--gray-500);
}

.service-card.featured > p { color: rgba(255,255,255,0.8); }

.service-features {
    margin-bottom: 24px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    padding: 6px 0;
    color: var(--gray-700);
}

.service-card.featured .service-features li { color: rgba(255,255,255,0.9); }

.service-features li i {
    color: var(--accent);
    font-size: 0.8rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.service-card.featured .service-link { color: var(--white); }

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

/* ===== About Preview ===== */
.about-preview {
    padding: 120px 0;
    background: var(--gray-100);
}

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

.about-image-card {
    position: relative;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: 80px 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 450px;
    overflow: hidden;
}

.about-image-icon {
    font-size: 8rem;
    color: rgba(255,255,255,0.15);
}

.about-image-deco {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    top: -50px;
    right: -50px;
}

.stat-floating {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 20px 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.stat-floating strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-floating span {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.stat-1 { bottom: 40px; left: -20px; }
.stat-2 { top: 40px; right: -20px; }

.about-text {
    font-size: 1.05rem;
    color: var(--gray-700);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 32px 0;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.value-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.value-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

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

/* ===== Partners Section (Home) ===== */
.partners-section {
    padding: 100px 0;
    background: var(--white);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.partner-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 24px;
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    text-align: center;
}

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

.partner-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.partner-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.partner-card p {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 100px 0;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    top: -200px;
    right: -100px;
}

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

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
    line-height: 1.4;
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
}

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

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    padding: 80px 0 0;
    color: rgba(255,255,255,0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo {
    margin-bottom: 16px;
}

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

.footer-brand > p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}

.footer-links ul li a:hover {
    color: var(--white);
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.footer-contact ul li i {
    margin-top: 4px;
    color: var(--primary);
    width: 16px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0,102,204,0.3);
    z-index: 99;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,102,204,0.4);
}

/* ===== Page Hero (Sub pages) ===== */
.page-hero {
    background: var(--gradient-hero);
    padding: 160px 0 80px;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0,102,204,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(0,180,216,0.08) 0%, transparent 50%);
}

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

.page-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

.breadcrumb a {
    color: rgba(255,255,255,0.6);
}

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

.breadcrumb i { font-size: 0.7rem; }

/* ===== Greeting Section ===== */
.greeting-section {
    padding: 100px 0;
}

.greeting-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.greeting-card {
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: 56px 40px;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.greeting-card::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    bottom: -60px;
    right: -60px;
}

.greeting-icon {
    font-size: 2.5rem;
    color: rgba(255,255,255,0.3);
    margin-bottom: 24px;
}

.greeting-card blockquote {
    font-size: 1.2rem;
    line-height: 1.8;
    font-weight: 400;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.greeting-author {
    position: relative;
    z-index: 1;
}

.greeting-author strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
}

.greeting-author span {
    font-size: 0.85rem;
    opacity: 0.7;
}

.greeting-text p {
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 20px;
    color: var(--gray-700);
}

/* ===== Values Section ===== */
.values-section {
    padding: 100px 0;
    background: var(--gray-100);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.value-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.value-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-light);
    position: absolute;
    top: 12px;
    right: 20px;
    line-height: 1;
}

.value-icon-lg {
    width: 72px;
    height: 72px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
}

.value-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.value-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ===== Timeline ===== */
.timeline-section {
    padding: 100px 0;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
    padding-left: 120px;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    width: 48px;
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--primary);
    text-align: right;
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 53px;
    top: 6px;
    width: 17px;
    height: 17px;
    border-radius: 50%;
    background: var(--white);
    border: 4px solid var(--primary);
    z-index: 1;
}

.timeline-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    margin-bottom: 16px;
    transition: var(--transition);
    position: relative;
}

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

.timeline-month {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 10px;
}

.timeline-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

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

.timeline-icon {
    position: absolute;
    top: 28px;
    right: 28px;
    color: var(--primary-light);
    font-size: 1.5rem;
}

/* ===== Business Detail ===== */
.business-detail {
    padding: 100px 0;
}

.business-detail.alt-bg {
    background: var(--gray-100);
}

.business-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 80px;
    align-items: center;
}

.business-detail-grid.reverse {
    grid-template-columns: 1.3fr 1fr;
}

.business-detail-grid.reverse .business-detail-visual {
    order: 2;
}

.business-detail-grid.reverse .business-detail-content {
    order: 1;
}

.business-icon-large {
    width: 200px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: rgba(255,255,255,0.3);
    margin: 0 auto;
    position: relative;
}

.business-number {
    position: absolute;
    font-size: 8rem;
    font-weight: 900;
    color: var(--primary-light);
    opacity: 0.3;
    bottom: -40px;
    right: -20px;
    line-height: 1;
}

.business-detail-content .section-tag {
    margin-bottom: 12px;
}

.business-detail-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 20px;
}

.business-lead {
    font-size: 1.1rem;
    color: var(--gray-700);
    font-weight: 500;
    margin-bottom: 16px;
    line-height: 1.8;
}

.business-detail-content > p {
    font-size: 0.95rem;
    color: var(--gray-500);
    margin-bottom: 28px;
    line-height: 1.8;
}

.business-features {
    display: grid;
    gap: 12px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--gray-700);
}

.feature-item i {
    color: var(--accent);
    font-size: 1rem;
}

/* Cooperation Cards */
.cooperation-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 28px;
}

.coop-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: var(--transition);
}

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

.coop-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.coop-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.coop-card p {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ===== Partners Detail ===== */
.partners-detail-section {
    padding: 100px 0;
}

.partners-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.partner-detail-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: var(--transition);
}

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

.partner-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.partner-detail-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.partner-detail-badge {
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.partner-detail-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.partner-detail-desc {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 20px;
}

.partner-detail-list {
    margin-bottom: 24px;
}

.partner-detail-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--gray-700);
    padding: 6px 0;
}

.partner-detail-list li i {
    color: var(--accent);
    font-size: 0.8rem;
}

.partner-detail-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.partner-detail-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

/* ===== Contact ===== */
.contact-section {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.contact-info > p {
    font-size: 0.95rem;
    color: var(--gray-500);
    margin-bottom: 36px;
}

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

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.contact-info-item h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.contact-info-item p,
.contact-info-item a {
    font-size: 0.9rem;
    color: var(--gray-500);
}

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

/* Contact Form */
.contact-form-wrap {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}

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

.form-group {
    margin-bottom: 20px;
}

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

.required { color: #e74c3c; }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--dark);
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0,102,204,0.1);
}

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

/* Map */
.map-section {
    padding: 0 0 100px;
}

.map-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* ===== Animations ===== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    opacity: 1;
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    opacity: 1;
    transform: translateX(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-title { font-size: 3rem; }
    .section-title { font-size: 2rem; }
    .services-grid { grid-template-columns: 1fr; gap: 24px; }
    .service-card.featured { transform: none; }
    .service-card.featured:hover { transform: translateY(-8px); }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .greeting-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .business-detail-grid,
    .business-detail-grid.reverse { grid-template-columns: 1fr; gap: 40px; }
    .business-detail-grid.reverse .business-detail-visual { order: 0; }
    .business-detail-grid.reverse .business-detail-content { order: 0; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-detail-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .mobile-toggle { display: flex; }

    .nav {
        position: fixed;
        inset: 0;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(10px);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transform: translateX(100%);
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
    }

    .nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 4px;
        text-align: center;
        width: 100%;
        max-width: 300px;
        padding: 0 24px;
    }

    .nav-item > a {
        display: block;
        font-size: 1.15rem;
        padding: 14px 20px;
        color: rgba(255,255,255,0.85);
        border-radius: var(--radius-sm);
    }

    .header.scrolled .nav-item > a {
        color: rgba(255,255,255,0.85);
    }

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

    /* 드롭다운: 토글 방식이 아닌 항상 펼침, 간결하게 */
    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        box-shadow: none;
        padding: 0 0 0 20px;
        min-width: auto;
    }

    .dropdown li a {
        color: rgba(255,255,255,0.45);
        font-size: 0.85rem;
        padding: 8px 16px;
    }

    .dropdown li a:hover,
    .dropdown li a.active {
        color: var(--white);
        background: rgba(255,255,255,0.06);
    }

    /* Hero */
    .hero { min-height: 100svh; }
    .hero-content { padding: 100px 0 60px; }
    .hero-title { font-size: 2.2rem; }
    .hero-desc { font-size: 1rem; }
    .hero-scroll { bottom: 24px; }

    /* Page Hero */
    .page-hero { padding: 120px 0 56px; }
    .page-hero h1 { font-size: 2rem; }

    /* Sections: 패딩 축소 */
    .services { padding: 72px 0; }
    .about-preview { padding: 72px 0; }
    .partners-section { padding: 72px 0; }
    .cta-section { padding: 64px 0; }
    .greeting-section { padding: 72px 0; }
    .values-section { padding: 72px 0; }
    .timeline-section { padding: 72px 0; }
    .business-detail { padding: 72px 0; }
    .partners-detail-section { padding: 72px 0; }
    .contact-section { padding: 72px 0; }
    .map-section { padding: 0 0 72px; }

    .section-header { margin-bottom: 40px; }
    .section-title { font-size: 1.7rem; }
    .section-desc { font-size: 1rem; }

    /* About 이미지 카드 */
    .about-image-card {
        min-height: 280px;
        padding: 48px 32px;
    }
    .about-image-icon { font-size: 5rem; }
    .stat-floating { padding: 14px 18px; }
    .stat-floating strong { font-size: 1.2rem; }
    .stat-1 { bottom: 16px; left: 8px; }
    .stat-2 { top: 16px; right: 8px; }

    /* Greeting 카드 */
    .greeting-card {
        padding: 36px 28px;
    }
    .greeting-card blockquote { font-size: 1.05rem; }

    /* Values */
    .values-grid { grid-template-columns: 1fr 1fr; }

    /* Business 아이콘 */
    .business-icon-large {
        width: 140px;
        height: 140px;
        font-size: 3.5rem;
    }
    .business-number { font-size: 5rem; bottom: -24px; }
    .business-detail-content h2 { font-size: 1.6rem; }

    /* Partners */
    .partners-grid { grid-template-columns: 1fr 1fr; }
    .partner-card { padding: 28px 16px; }
    .partner-detail-card { padding: 28px; }

    /* Contact */
    .contact-form-wrap { padding: 28px 20px; }
    .form-row { grid-template-columns: 1fr; }
    .cooperation-cards { grid-template-columns: 1fr; }

    /* Map */
    .map-wrap iframe { height: 300px; }

    /* CTA */
    .cta-content h2 { font-size: 1.5rem; }
    .cta-content p { font-size: 0.95rem; }

    /* Timeline */
    .timeline::before { left: 20px; }
    .timeline-item { padding-left: 56px; }
    .timeline-year { width: auto; left: 0; font-size: 0.75rem; }
    .timeline-item::after { left: 13px; width: 15px; height: 15px; }
    .timeline-card { padding: 20px; }
    .timeline-icon { display: none; }

    /* Footer */
    .footer { padding: 56px 0 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-contact ul li { font-size: 0.8rem; }
    .footer-bottom { font-size: 0.75rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.7rem; }
    .hero-subtitle { font-size: 0.8rem; letter-spacing: 2px; }
    .hero-buttons { flex-direction: column; align-items: flex-start; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .container { padding: 0 16px; }
    .service-card { padding: 32px 24px; }
    .cta-buttons { flex-direction: column; align-items: stretch; }
    .cta-buttons .btn { justify-content: center; }
    .section-title { font-size: 1.45rem; }
    .page-hero h1 { font-size: 1.6rem; }
    .page-hero p { font-size: 0.95rem; }
    .breadcrumb { font-size: 0.75rem; }
    .values-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: 1fr; }
    .about-image-card { min-height: 220px; padding: 36px 24px; }
    .about-image-icon { font-size: 4rem; }
    .greeting-card { padding: 28px 20px; }
    .greeting-card blockquote { font-size: 0.95rem; margin-bottom: 20px; }
    .business-icon-large { width: 110px; height: 110px; font-size: 2.8rem; }
    .business-number { font-size: 4rem; }
    .partner-icon { width: 52px; height: 52px; font-size: 1.2rem; }
    .contact-info-icon { width: 40px; height: 40px; min-width: 40px; font-size: 0.95rem; }
    .map-wrap iframe { height: 240px; }
}