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

:root {
    /* Premium Color Palette - Refined Dark Blue Theme */
    --primary-gradient: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    --secondary-gradient: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    --blue-gradient: linear-gradient(135deg, #0284c7 0%, #0891b2 100%);
    --dark-gradient: linear-gradient(135deg, #0c1b2e 0%, #1e3a5f 50%, #2d5a7b 100%);
    --premium-gradient: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #0ea5e9 100%);

    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --secondary-color: #0891b2;
    --accent-color: #0ea5e9;

    --text-dark: #0f172a;
    --text-gray: #475569;
    --text-light: #94a3b8;

    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;

    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.2);

    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    cursor: default;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Form elements - allow selection and text cursor */
input,
textarea,
select,
button {
    cursor: text;
    -webkit-user-select: auto;
    -moz-user-select: auto;
    -ms-user-select: auto;
    user-select: auto;
}

button,
select {
    cursor: pointer;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===================================
   Premium Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    -webkit-user-select: auto;
    -moz-user-select: auto;
    -ms-user-select: auto;
    user-select: auto;
}

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

/* ===================================
   Premium Header with Glassmorphism
   =================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.main-header.scrolled {
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
}

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

.logo a {
    color: var(--text-dark);
    transition: transform 0.3s ease;
    display: block;
}

.logo a:hover {
    transform: translateY(-2px);
}

.logo h1 {
    font-size: 1.75rem;
    margin-bottom: 0;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.logo .tagline {
    font-size: 0.7rem;
    color: var(--text-gray);
    margin-top: -5px;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.main-nav a {
    color: #000000;
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.5rem 0;
    position: relative;
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: color 0.3s ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 0;
    background: transparent;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 0;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Add spacing for fixed header */
main {
    padding-top: 100px;
}

/* Mobile-only line break */
.mobile-br {
    display: none;
}

/* ===================================
   Premium Footer with Gradient
   =================================== */
.main-footer {
    background: var(--dark-gradient);
    color: var(--bg-light);
    padding: 4rem 0 2rem;
    margin-top: 6rem;
    position: relative;
    overflow: hidden;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: var(--bg-white);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-company-name {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.footer-section h4 {
    color: var(--bg-white);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.footer-section p,
.footer-section ul {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
    transition: transform 0.3s ease;
}

.footer-section ul li:hover {
    transform: translateX(5px);
}

.footer-section a {
    color: var(--text-light);
}

.footer-section a:hover {
    color: var(--bg-white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===================================
   Premium Buttons with Animations
   =================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-size: 1rem;
    position: relative;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    overflow: hidden;
    letter-spacing: 0.02em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(14, 165, 233, 0.5);
    color: white;
    background: linear-gradient(135deg, #0891b2 0%, #0284c7 100%);
}

.btn-secondary {
    background: rgba(14, 165, 233, 0.1);
    color: #0891b2;
    border: 2px solid #0ea5e9;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(14, 165, 233, 0.3);
    border-color: transparent;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    border-radius: 14px;
}

/* ===================================
   Premium Hero Section with Image
   =================================== */
.hero {
    background: linear-gradient(to right, rgba(10, 20, 30, 0.85) 0%, rgba(20, 35, 50, 0.75) 40%, rgba(30, 50, 70, 0.6) 100%),
                url('/images/hero-robot.jpg') center center / cover no-repeat;
    color: white;
    padding: 12rem 0 8rem;
    position: relative;
    overflow: hidden;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.3) 0%, transparent 60%);
}

.hero .container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 8rem;
    padding-right: 2rem;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: left;
    max-width: 700px;
    margin: 0;
}

.hero-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: #60A5FA;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out 0.1s both;
    color: #ffffff !important;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
    background: none !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: #ffffff !important;
    background-clip: unset !important;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    margin-bottom: 3rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s both;
    line-height: 1.8;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.95) !important;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-buttons .btn {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
}

.hero-badge {
    animation: fadeInUp 1s ease-out 0.4s both;
}

.badge-upcoming {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    color: white;
    padding: 0.875rem 1.75rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    letter-spacing: 0.03em;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Investment Highlight - Premium Card
   =================================== */
.investment-highlight {
    padding: 4rem 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.investment-card {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    display: flex;
    gap: 2rem;
    align-items: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.investment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--primary-gradient);
}

.investment-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 80px rgba(0,0,0,0.15);
}

.investment-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.investment-content h3 {
    margin-bottom: 0.75rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.75rem;
}

.link-arrow {
    color: #0891b2;
    font-weight: 600;
    margin-top: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease, color 0.3s ease;
}

.link-arrow:hover {
    gap: 1rem;
    color: #0e7490;
}

/* ===================================
   Premium Sections
   =================================== */
.section-about,
.section-technology,
.section-vision,
.section-info,
.section-milestones,
.section-values,
.section-products,
.section-technologies,
.section-applications,
.section-benefits,
.section-investment-main,
.section-news,
.section-roadmap,
.section-ir,
.section-contact-info,
.section-contact-form,
.section-map {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    display: inline-block;
    background: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-about {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-light) 50%, var(--bg-white) 100%);
}

/* ===================================
   Premium Cards with Hover Effects
   =================================== */
.about-grid,
.tech-grid,
.values-grid,
.applications-grid,
.benefits-grid,
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.about-card,
.tech-item,
.value-card,
.application-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.contact-info-card {
    background: white;
    padding: 1.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.contact-info-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.contact-info-card p {
    font-size: 1rem;
    color: var(--text-dark);
}

.contact-info-card .contact-value {
    font-weight: 600;
    color: var(--primary-color);
}

.value-card {
    text-align: center;
    padding: 2.5rem 2rem !important;
}

.value-card h3 {
    margin-bottom: 1rem;
}

.value-card p {
    line-height: 1.8;
}

.about-card::before,
.tech-item::before,
.value-card::before,
.application-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.about-card:hover::before,
.tech-item:hover::before,
.value-card:hover::before,
.application-card:hover::before {
    transform: scaleX(1);
}

.about-card:hover,
.tech-item:hover,
.value-card:hover,
.application-card:hover,
.contact-info-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
}

.about-icon,
.tech-detail-icon,
.value-icon,
.application-icon,
.contact-info-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: #0891b2;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

/* ===================================
   Premium Page Header
   =================================== */
.page-header {
    background: var(--dark-gradient);
    color: white;
    padding: 6rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(236, 72, 153, 0.3) 0%, transparent 50%);
}

.page-header h1 {
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, #ffffff 0%, #a8edea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* ===================================
   Premium Vision & Mission
   =================================== */
.vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 3rem;
}

.vision-item {
    background: white;
    padding: 3.5rem;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.vision-item::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: var(--primary-gradient);
    opacity: 0.05;
    border-radius: 50%;
    transform: translate(50%, -50%);
}

.vision-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

/* ===================================
   Premium Company Info
   =================================== */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.info-item {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border-left: 4px solid transparent;
    background-image: linear-gradient(white, white), var(--primary-gradient);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.info-item:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.15);
}

.info-label {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-value {
    font-size: 1.125rem;
    color: var(--text-dark);
    font-weight: 600;
}

/* ===================================
   Premium Timeline
   =================================== */
.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline-item {
    position: relative;
    padding-left: 4rem;
    padding-bottom: 3rem;
    border-left: 3px solid var(--border-color);
}

.timeline-item:last-child {
    border-left-color: transparent;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-gradient);
    border: 4px solid white;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
}

.timeline-item:hover::before {
    transform: scale(1.3);
    box-shadow: 0 0 0 8px rgba(99, 102, 241, 0.2);
}

.timeline-date {
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.15);
}

.timeline-content h3 {
    margin-bottom: 0.75rem;
}

.timeline-content p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===================================
   Premium Products
   =================================== */
.product-card {
    background: white;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.product-card:hover::before {
    opacity: 0.03;
}

.product-card.featured {
    border: 2px solid transparent;
    background-image: linear-gradient(white, white), var(--primary-gradient);
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(99, 102, 241, 0.2);
}

.product-badge {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--secondary-gradient);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(236, 72, 153, 0.3);
    letter-spacing: 0.05em;
}

.product-header {
    margin-bottom: 2rem;
}

.product-header h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.product-subtitle {
    color: var(--text-gray);
    font-size: 1.125rem;
    font-weight: 500;
}

.product-description {
    margin-bottom: 2rem;
    line-height: 1.8;
    color: var(--text-gray);
}

.product-specs {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-gray) 100%);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.product-specs h4 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.product-specs ul {
    list-style: none;
}

.product-specs li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    font-weight: 500;
}

.product-specs li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-size: 1.125rem;
}

/* ===================================
   Premium Technology Details
   =================================== */
.tech-details {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.tech-detail-item {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    display: flex;
    gap: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.tech-detail-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.tech-detail-item:hover::before {
    opacity: 0.03;
}

.tech-detail-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15);
}

.tech-detail-content {
    position: relative;
    z-index: 1;
}

.tech-detail-content h3 {
    margin-bottom: 1.25rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.75rem;
}

.tech-detail-content p {
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

.tech-features {
    list-style: none;
    margin-top: 1.5rem;
}

.tech-features li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    font-weight: 500;
}

.tech-features li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================
   Premium Benefits
   =================================== */
.benefit-item {
    text-align: center;
    padding: 3rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.benefit-item:hover::before {
    opacity: 0.05;
}

.benefit-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
}

.benefit-number {
    font-size: 4rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.benefit-label {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.benefit-item p {
    position: relative;
    z-index: 1;
    color: var(--text-gray);
}

/* ===================================
   Premium News & Investment
   =================================== */
.investment-highlight-large {
    background: var(--dark-gradient);
    color: white;
    padding: 4rem;
    border-radius: 32px;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.2);
}

.investment-highlight-large::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.3) 0%, transparent 50%);
}

.investment-highlight-large h2,
.investment-highlight-large .investment-badge-large,
.investment-highlight-large .investment-date,
.investment-highlight-large .investment-detail {
    position: relative;
    z-index: 1;
}

.investment-badge-large {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    letter-spacing: 0.05em;
}

.investment-date {
    color: rgba(255,255,255,0.8);
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

.investment-detail {
    margin-top: 2rem;
}

.investment-detail > p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.investment-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.investment-point {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.investment-point h4 {
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

.investment-point ul {
    list-style: none;
}

.investment-point li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
}

.investment-point li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    font-size: 1rem;
    color: #ffffff;
}

.news-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.news-card:hover::before {
    opacity: 0.03;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
}

.news-tag {
    display: inline-block;
    background: var(--primary-gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
}

.news-date {
    color: var(--text-gray);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.news-card h3 {
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    font-size: 1.375rem;
}

.news-card p {
    position: relative;
    z-index: 1;
    color: var(--text-gray);
    line-height: 1.8;
}

.news-link {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    margin-top: 1.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
    position: relative;
    z-index: 1;
}

.news-link:hover {
    gap: 1rem;
}

/* ===================================
   Premium Roadmap
   =================================== */
.roadmap {
    max-width: 900px;
    margin: 0 auto;
}

.roadmap-item {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
    padding: 2.5rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.roadmap-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform 0.4s ease;
}

.roadmap-item:hover::before {
    transform: scaleY(1);
}

.roadmap-item.current {
    border: 2px solid transparent;
    background-image: linear-gradient(white, white), var(--primary-gradient);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.2);
}

.roadmap-item.completed {
    opacity: 0.7;
}

.roadmap-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.15);
}

.roadmap-quarter {
    flex-shrink: 0;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.25rem;
    min-width: 120px;
}

.roadmap-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.roadmap-content ul {
    list-style: none;
    margin-top: 1rem;
}

.roadmap-content li {
    padding: 0.5rem 0;
    padding-left: 2rem;
    position: relative;
    font-weight: 500;
}

.roadmap-content li::before {
    content: '\f0da';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================
   Premium IR Section
   =================================== */
.ir-intro {
    text-align: center;
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-gray);
}

.ir-contact-box {
    background: white;
    padding: 3.5rem;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ir-contact-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.ir-contact-box h3 {
    margin-bottom: 2rem;
    font-size: 2rem;
}

.ir-contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2.5rem;
    margin: 3rem 0;
    text-align: left;
}

.ir-contact-item {
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.ir-contact-item:hover {
    transform: translateY(-5px);
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-gray) 100%);
}

.ir-contact-item strong {
    display: block;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.ir-contact-item p {
    color: var(--text-dark);
    font-weight: 600;
}

/* ===================================
   Premium Contact Form
   =================================== */
.contact-form-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 4rem;
    border-radius: 32px;
    box-shadow: 0 30px 80px rgba(0,0,0,0.1);
}

.contact-form-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-form-header h2 {
    margin-bottom: 0.75rem;
    font-size: 2.5rem;
}

.contact-form-header p {
    color: var(--text-gray);
    font-size: 1.125rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-privacy {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-gray) 100%);
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: 600;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.privacy-text {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-top: 1rem;
    line-height: 1.7;
}

.form-submit {
    text-align: center;
    margin-top: 2rem;
}

.form-error-message {
    background: linear-gradient(135deg, #fee 0%, #fdd 100%);
    color: #c00;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border-left: 4px solid #c00;
    font-weight: 600;
}

.form-success {
    text-align: center;
    padding: 4rem 2rem;
}

.success-icon {
    width: 100px;
    height: 100px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    margin: 0 auto 2rem;
    box-shadow: 0 10px 40px rgba(20, 184, 166, 0.3);
    animation: successPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes successPop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.form-success h3 {
    margin-bottom: 1rem;
    font-size: 2rem;
}

.form-success p {
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* ===================================
   Premium Map Section
   =================================== */
.map-container {
    margin-bottom: 3rem;
}

.map-placeholder {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-gray) 100%);
    padding: 5rem 3rem;
    border-radius: 24px;
    text-align: center;
    border: 2px dashed var(--border-color);
    position: relative;
    overflow: hidden;
}

.map-placeholder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    background: var(--primary-gradient);
    opacity: 0.05;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.map-placeholder p {
    font-size: 1.25rem;
    margin: 0.75rem 0;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.map-info {
    color: var(--text-gray);
    position: relative;
    z-index: 1;
}

.directions {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.directions h3 {
    margin-top: 2rem;
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.directions h3:first-child {
    margin-top: 0;
}

.directions ul {
    list-style: none;
}

.directions li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    font-weight: 500;
}

.directions li::before {
    content: '▸';
    position: absolute;
    left: 0;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================
   Premium CTA Section
   =================================== */
.section-cta {
    background: var(--dark-gradient);
    color: white;
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.section-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(236, 72, 153, 0.3) 0%, transparent 50%);
}

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

.cta-content h2 {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #a8edea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: clamp(2rem, 4vw, 3rem);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero .container {
        width: 100%;
        max-width: 100%;
        padding-left: 4rem;
        padding-right: 2rem;
    }
}

@media (max-width: 768px) {
    main {
        padding-top: 80px;
    }

    .header-content {
        flex-direction: row;
        justify-content: space-between;
    }

    .logo {
        text-align: left;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
        padding-top: 80px;
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 2rem;
    }

    .main-nav li {
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .main-nav a {
        display: block;
        padding: 1.25rem 0;
        font-size: 1.1rem;
    }

    /* Menu Overlay */
    body::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 999;
    }

    body.menu-open::before {
        opacity: 1;
        visibility: visible;
    }

    body.menu-open {
        overflow: hidden;
    }

    .hero {
        padding: 5rem 0 4rem;
        min-height: 70vh;
    }

    .hero .container {
        width: 100%;
        max-width: 100%;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .hero-content {
        max-width: 100%;
        margin: 0;
    }

    .hero-label {
        font-size: 0.75rem;
    }

    .hero-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-start;
    }

    .hero-buttons .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .mobile-br {
        display: inline;
    }

    /* Mobile title optimization */
    .investment-card h3,
    .section-header h2 {
        line-height: 1.4;
        word-break: keep-all;
    }

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

    .tech-detail-item {
        flex-direction: column;
        padding: 2rem;
    }

    .roadmap-item {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem;
    }

    .investment-card {
        flex-direction: column;
        padding: 2rem;
    }

    .contact-form-wrapper {
        padding: 2.5rem 2rem;
    }

    .ir-contact-box {
        padding: 2.5rem 2rem;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero .container {
        width: 100%;
        max-width: 100%;
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .about-grid,
    .tech-grid,
    .values-grid,
    .products-grid,
    .applications-grid,
    .benefits-grid,
    .news-grid,
    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

    .contact-form-wrapper {
        padding: 2rem 1.5rem;
    }

    .about-card,
    .tech-item,
    .value-card,
    .application-card {
        padding: 2rem;
    }

    .product-card {
        padding: 2rem;
    }

    .investment-highlight-large {
        padding: 2.5rem 2rem;
    }

    .btn {
        padding: 0.875rem 1.75rem;
    }

    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

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

/* ===================================
   Loading Animation (Optional)
   =================================== */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer {
    animation: shimmer 2s infinite;
    background: linear-gradient(to right, #f6f7f8 0%, #edeef1 20%, #f6f7f8 40%, #f6f7f8 100%);
    background-size: 1000px 100%;
}