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

:root {
    --primary: #FFFFFF;
    --accent: #FF6B35;
    --accent-light: #FF8A65;
    --accent-purple: #6B35FF;
    --accent-green: #10B981;
    --bg: #000000;
    --surface: #0A0A0A;
    --border: rgba(255, 255, 255, 0.1);
    --text-primary: #FFFFFF;
    --text-secondary: #CCCCCC;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.2);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.3);
}

/* Light Theme */
:root[data-theme="light"] {
    --primary: #000000;
    --bg: #FFFFFF;
    --surface: #F9FAFB;
    --border: rgba(0, 0, 0, 0.1);
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.25);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.35);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 16px;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent);
    z-index: 9999;
    transition: width 0.1s ease-out;
    box-shadow: 0 2px 4px rgba(255, 107, 53, 0.2);
}

h1, h2, h3, .hero-title, .hero-subtitle, .section-title {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.35);
    backdrop-filter: blur(12px);
    z-index: 1000;
    padding: 1.5rem 0;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

:root[data-theme="light"] nav {
    background: rgba(255, 255, 255, 0.7);
}

nav::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    pointer-events: none;
}

:root[data-theme="light"] nav::after {
    background: rgba(0, 0, 0, 0.08);
}

nav.scrolled {
    background: rgba(10, 10, 10, 0.8);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0;
    position: relative;
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
        gap: var(--spacing-sm);
    }
}

.logo {
    font-size: 1.625rem;
    font-weight: 900;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.875rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: opacity 0.3s ease;
    margin-right: auto;
}

.logo span {
    font-family: 'Rubik Rounded', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.logo:hover {
    opacity: 0.8;
}

/* Theme Toggle Button */
.nav-theme-item {
    display: flex !important;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.theme-toggle-mobile {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: transparent !important;
    border: none !important;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
    margin: 0;
    flex-shrink: 0;
}

.theme-toggle-mobile:hover {
    background: rgba(255, 255, 255, 0.1) !important;
}

:root[data-theme="light"] .theme-toggle-mobile:hover {
    background: rgba(0, 0, 0, 0.05) !important;
}

.theme-toggle-mobile svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-primary);
    fill: none;
    transition: transform 0.3s ease;
    display: none;
    flex-shrink: 0;
}

.theme-toggle-mobile:hover svg {
    transform: rotate(20deg);
}

.theme-icon {
    width: 20px !important;
    height: 20px !important;
    stroke: var(--text-primary) !important;
    fill: none !important;
}

:root[data-theme="dark"] .theme-icon-dark,
:root:not([data-theme]) .theme-icon-dark {
    display: block !important;
}

:root[data-theme="light"] .theme-icon-dark {
    display: none !important;
}

:root[data-theme="light"] .theme-icon-light {
    display: block !important;
}

:root[data-theme="dark"] .theme-icon-light {
    display: none !important;
}

.logo-img {
    height: 48px;
    width: auto;
    display: block;
}

/* Theme-based logo switching */
.logo-img-light {
    display: none;
}

:root[data-theme="light"] .logo-img-dark {
    display: none;
}

:root[data-theme="light"] .logo-img-light {
    display: block;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    letter-spacing: 0.02em;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    position: relative;
    z-index: 1000;
    transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

.mobile-menu-toggle[aria-expanded="true"] {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

:root[data-theme="light"] .mobile-menu-toggle {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.1);
}

:root[data-theme="light"] .mobile-menu-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--accent);
}

:root[data-theme="light"] .mobile-menu-toggle[aria-expanded="true"] {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--accent);
}

.mobile-menu-toggle span {
    position: absolute;
    left: 50%;
    width: 20px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: 999px;
    transform-origin: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 1;
}

.mobile-menu-toggle span:nth-child(1) {
    top: 14px;
    transform: translateX(-50%);
}

.mobile-menu-toggle span:nth-child(2) {
    top: 50%;
    transform: translate(-50%, -50%);
}

.mobile-menu-toggle span:nth-child(3) {
    bottom: 14px;
    transform: translateX(-50%);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    bottom: auto;
    top: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
}

body.nav-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .nav-container {
        position: relative;
        display: flex;
        align-items: center;
    }

    .logo {
        order: 1;
        margin-right: auto;
    }

    .mobile-menu-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        order: 2;
        position: relative;
    }
    
    .mobile-menu-toggle span {
        display: block !important;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(320px, 80vw);
        padding: 6rem 2rem 2rem;
        background: rgba(0, 0, 0, 0.92);
        backdrop-filter: blur(12px);
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: -6px 0 24px rgba(0, 0, 0, 0.45);
        z-index: 999;
        order: 4;
    }

    :root[data-theme="light"] .nav-links {
        background: rgba(255, 255, 255, 0.95);
        box-shadow: -6px 0 24px rgba(0, 0, 0, 0.15);
    }

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

    .nav-links a {
        font-size: 1.125rem;
        color: var(--text-primary);
        padding: var(--spacing-xs) 0;
    }
    
    .nav-links a::after {
        display: none;
    }

    /* Theme Toggle in Mobile Menu */
    .nav-theme-item {
        margin-top: auto;
        padding-top: var(--spacing-xl);
        border-top: 1px solid var(--border);
        display: flex;
        justify-content: center;
    }

    .theme-toggle-mobile {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: transparent !important;
        border: none !important;
        cursor: pointer;
        transition: all 0.3s ease;
        padding: 0;
    }

    .theme-toggle-mobile:hover {
        background: rgba(255, 255, 255, 0.1) !important;
    }

    :root[data-theme="light"] .theme-toggle-mobile:hover {
        background: rgba(0, 0, 0, 0.05) !important;
    }

    .theme-toggle-mobile svg {
        width: 24px;
        height: 24px;
        stroke: var(--text-primary);
        fill: none;
        flex-shrink: 0;
        transition: transform 0.3s ease;
    }

    .theme-toggle-mobile:hover svg {
        transform: rotate(20deg);
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    background: radial-gradient(ellipse at center top, rgba(255, 107, 53, 0.08) 0%, rgba(0, 0, 0, 0) 50%);
}

:root[data-theme="light"] .hero {
    background: radial-gradient(ellipse at center top, rgba(255, 107, 53, 0.12) 0%, rgba(255, 255, 255, 0) 50%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 107, 53, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 60%, rgba(107, 53, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(53, 255, 107, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

:root[data-theme="light"] .hero::before {
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 107, 53, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 60%, rgba(107, 53, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(16, 185, 129, 0.08) 0%, transparent 50%);
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

h1 {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    text-wrap: balance;
    word-break: keep-all;
}

.hero-title {
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    font-weight: 300;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    margin-bottom: 0.75rem;
    line-height: 1.8;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    text-wrap: pretty;
    word-break: keep-all;
}

.hero-subtitle.show {
    opacity: 1;
    transform: translateY(-15px);
}

/* Hero CTA */
.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
    justify-content: center;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease 0.3s, transform 0.6s ease 0.3s;
}

.hero-subtitle.show ~ .hero-cta {
    opacity: 1;
    transform: translateY(0);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    justify-content: center;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease 0.5s, transform 0.6s ease 0.5s;
}

.hero-subtitle.show ~ .hero-cta ~ .hero-stats {
    opacity: 1;
    transform: translateY(0);
}

.stat-item {
    text-align: center;
    min-width: 100px;
}

.stat-number {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    font-family: 'Work Sans', 'Noto Sans KR', sans-serif;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 0.02em;
}

.hero-title-type {
    position: relative;
    display: inline-block;
    white-space: pre-line;
    padding-right: 0.15em;
    line-height: 1.1;
    min-height: 2.8em;
    min-width: 0.35em;
}

.hero-title-type::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 0.08em;
    height: 80%;
    transform: translateY(10%);
    background: var(--accent);
    opacity: 0;
}

.hero-title-type.pre-blink-active::after,
.hero-title-type.is-typing::after {
    opacity: 1;
    animation: blink 0.8s step-end infinite;
}

.hero-title-type.pre-blink-hidden::after,
.hero-title-type.completed::after {
    opacity: 0;
    animation: none;
}

.accent-letter {
    color: var(--accent);
}

.fade-in {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.js-enabled .fade-in {
    opacity: 0;
    transform: translateY(24px);
}

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

/* Sections */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    letter-spacing: -0.01em;
    text-wrap: balance;
    word-break: keep-all;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title {
    margin-bottom: var(--spacing-2xl);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: var(--spacing-md) auto 0;
    border-radius: 999px;
}

/* Vision Section */
.vision {
    background: var(--surface);
    position: relative;
}

.vision::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.vision-content {
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 800px;
    margin: var(--spacing-2xl) auto 0;
    font-weight: 300;
    text-align: center;
    text-wrap: pretty;
    word-break: keep-all;
}

/* Recruiting Section */
.recruiting {
    background: var(--surface);
    position: relative;
}

.recruiting::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.recruiting-content {
    max-width: 900px;
    margin: var(--spacing-2xl) auto 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.9;
    font-weight: 300;
    text-wrap: pretty;
    word-break: keep-all;
}

.recruiting-content p {
    margin-bottom: var(--spacing-lg);
}

.recruiting-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Slogan Section */
.slogan {
    background: var(--bg);
    padding: var(--spacing-2xl) 0;
}

.slogan-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slogan-text {
    font-size: clamp(1.5rem, 5vw, 2.75rem);
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    text-align: center;
    position: relative;
    display: inline-block;
    transition: text-shadow 0.8s ease 0.4s;
}

.slogan-text.fade-in {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), 
                transform 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                text-shadow 0.8s ease 0.4s;
}

.slogan-text.fade-in.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    text-shadow: 
        0 0 20px rgba(255, 107, 53, 0.3),
        0 0 40px rgba(255, 107, 53, 0.2),
        0 0 60px rgba(255, 107, 53, 0.1);
}

.slogan-text::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
    opacity: 0;
    filter: blur(20px);
    transition: opacity 0.8s ease 0.3s, transform 0.8s ease 0.3s;
    pointer-events: none;
    z-index: -1;
}

.slogan-text.visible::before {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.5);
}

.slogan-text .floating-char {
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

.slogan-text .floating-char.quote {
    animation: none;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
}

.slogan-text .typewriter {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 0.12em solid var(--accent);
    padding-right: 0.1em;
    width: 0;
    animation: typing 4s steps(27, end) 0.5s forwards, blink 0.8s step-end infinite;
}

.recruiting-cta {
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.recruiting-cta p {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1.05rem;
}

/* Products Section */
.products {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.products::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.products-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.products-scroll {
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    padding: var(--spacing-2xl) 2rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 280px);
    gap: var(--spacing-xl);
    margin-top: 0;
    justify-content: center;
    align-items: stretch;
}

@media (max-width: 1200px) {
    .products-grid {
        justify-content: start;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .hero {
        padding: 7rem 1.5rem 3rem;
    }

    .products-grid {
        grid-template-columns: repeat(2, minmax(260px, 1fr));
        gap: var(--spacing-lg);
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

.product-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--spacing-xl);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    height: 100%;
    scroll-margin-top: 240px;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    opacity: 1;
    transform: translateZ(0);
    will-change: transform, opacity;
    transition:
        opacity 0.35s ease,
        transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
        border-color 0.3s ease,
        box-shadow 0.3s ease,
        background 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

:root[data-theme="light"] .product-card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(255, 107, 53, 0.08), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 0;
}

.product-card:hover::before {
    opacity: 1;
}

.js-enabled .product-card.fade-in {
    opacity: 0;
    transform: translateY(36px) scale(0.94) translateZ(0);
}

.js-enabled .product-card.fade-in.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.product-card.fade-in.visible:hover {
    border-color: rgba(255, 107, 53, 0.4);
    box-shadow: 
        0 20px 60px rgba(255, 107, 53, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: translateY(-6px) scale(1.015);
    background: rgba(255, 255, 255, 0.08);
}

.product-card-link:hover {
    text-decoration: none;
}

.product-card-link:focus .product-name {
    color: var(--accent-light);
}

:root[data-theme="light"] .product-card.fade-in.visible:hover {
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 
        0 20px 60px rgba(255, 107, 53, 0.15),
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    background: rgba(255, 255, 255, 0.9);
}

/* Featured Product Card (Cheez) */
.product-card.featured {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.12) 0%, rgba(255, 107, 53, 0.04) 100%);
    border: 1.5px solid rgba(255, 107, 53, 0.5);
    position: relative;
    box-shadow: 
        0 8px 32px rgba(255, 107, 53, 0.15),
        0 4px 16px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

:root[data-theme="light"] .product-card.featured {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.08) 0%, rgba(255, 255, 255, 0.9) 100%);
    border: 1.5px solid rgba(255, 107, 53, 0.4);
    box-shadow: 
        0 8px 32px rgba(255, 107, 53, 0.12),
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.product-card.featured::after {
    content: 'ACTIVE';
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: #FFFFFF;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
    backdrop-filter: blur(10px);
    pointer-events: none;
    z-index: 2;
}

.product-card.featured:hover {
    box-shadow: 
        0 24px 64px rgba(255, 107, 53, 0.25),
        0 12px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transform: translateY(-12px) scale(1.03);
    border-color: rgba(255, 107, 53, 0.7);
}

:root[data-theme="light"] .product-card.featured:hover {
    box-shadow: 
        0 24px 64px rgba(255, 107, 53, 0.2),
        0 12px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.product-icon {
    width: 72px;
    height: 72px;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.95) 0%, rgba(20, 20, 20, 0.9) 100%);
    border-radius: 18px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 1;
}

.product-card:hover .product-icon {
    transform: scale(1.05);
    box-shadow: 
        0 6px 20px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

:root[data-theme="light"] .product-icon {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.95) 0%, rgba(20, 20, 20, 0.9) 100%);
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.product-icon svg {
    width: 100%;
    height: 100%;
    stroke: #FFFFFF;
}

.product-icon svg.svg-white {
    stroke: #FFFFFF;
}

.product-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-icon img.posty-logo {
    width: 130%;
    height: 130%;
}

.product-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--accent);
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

.product-name-kr {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.product-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-weight: 300;
    font-size: 0.95rem;
    flex: 1 1 auto;
    min-height: 0;
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-md);
}

.product-card-link {
    text-decoration: none;
    display: block;
    outline: none;
}

.product-card-link:focus {
    outline: 3px solid var(--accent);
    outline-offset: 4px;
    border-radius: 24px;
}

.product-card-link:focus:not(:focus-visible) {
    outline: none;
}

.product-card-link:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 4px;
    border-radius: 24px;
    box-shadow: 
        0 0 0 4px rgba(255, 107, 53, 0.2),
        0 20px 60px rgba(255, 107, 53, 0.2);
}

.coming-soon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    margin-top: auto;
    align-self: stretch;
    backdrop-filter: blur(10px);
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
    position: relative;
    z-index: 1;
    width: 100%;
    flex-shrink: 0;
}

:root[data-theme="light"] .coming-soon-badge {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.coming-soon-badge.badge-visit {
    background: rgba(255, 107, 53, 0.1);
    border-color: rgba(255, 107, 53, 0.4);
    color: var(--accent);
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.15);
}

.coming-soon-badge.badge-visit:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

/* Posty Card - Posty Style Colors */
.product-card.posty-card {
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.12) 0%, rgba(0, 180, 216, 0.04) 100%);
    border: 1.5px solid rgba(0, 180, 216, 0.5);
    box-shadow: 
        0 8px 32px rgba(0, 180, 216, 0.15),
        0 4px 16px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    height: 100%;
}

:root[data-theme="light"] .product-card.posty-card {
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.08) 0%, rgba(255, 255, 255, 0.9) 100%);
    border: 1.5px solid rgba(0, 180, 216, 0.4);
    box-shadow: 
        0 8px 32px rgba(0, 180, 216, 0.12),
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.product-card.posty-card::after {
    background: linear-gradient(135deg, #00B4D8 0%, #48CAE4 100%);
    box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
}

.product-card.posty-card:hover {
    box-shadow: 
        0 24px 64px rgba(0, 180, 216, 0.25),
        0 12px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    border-color: rgba(0, 180, 216, 0.7);
}

:root[data-theme="light"] .product-card.posty-card:hover {
    box-shadow: 
        0 24px 64px rgba(0, 180, 216, 0.2),
        0 12px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1);
}

.product-card.posty-card .product-name {
    color: #00B4D8;
}

.product-card.posty-card .product-description {
    flex: 1 1 auto;
    min-height: 0;
    margin-bottom: var(--spacing-md);
}

.product-card.posty-card .coming-soon-badge.badge-visit {
    background: rgba(0, 180, 216, 0.1);
    border-color: rgba(0, 180, 216, 0.4);
    color: #00B4D8;
    box-shadow: 0 2px 8px rgba(0, 180, 216, 0.15);
    margin-top: auto;
    flex-shrink: 0;
}

.product-card.posty-card .coming-soon-badge.badge-visit:hover {
    background: #00B4D8;
    border-color: #00B4D8;
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
}

/* Differentiation Section */
.differentiation {
    padding: var(--spacing-3xl) 0;
    background: var(--surface);
    position: relative;
}

.differentiation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.tech-item {
    text-align: left;
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

:root[data-theme="light"] .tech-item {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.tech-item:nth-child(1) {
    border-left: 3px solid var(--accent);
}

.tech-item:nth-child(1)::before {
    background: radial-gradient(circle at top left, rgba(255, 107, 53, 0.05), transparent 60%);
}

.tech-item:nth-child(1):hover {
    border-color: rgba(255, 107, 53, 0.4);
    box-shadow: 
        0 12px 40px rgba(255, 107, 53, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.06);
}

:root[data-theme="light"] .tech-item:nth-child(1):hover {
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 
        0 12px 40px rgba(255, 107, 53, 0.15),
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    background: rgba(255, 255, 255, 0.9);
}

.tech-item:nth-child(2) {
    border-left: 3px solid var(--accent);
}

.tech-item:nth-child(2)::before {
    background: radial-gradient(circle at top left, rgba(255, 107, 53, 0.05), transparent 60%);
}

.tech-item:nth-child(2):hover {
    border-color: rgba(255, 107, 53, 0.4);
    box-shadow: 
        0 12px 40px rgba(255, 107, 53, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.06);
}

:root[data-theme="light"] .tech-item:nth-child(2):hover {
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 
        0 12px 40px rgba(255, 107, 53, 0.15),
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    background: rgba(255, 255, 255, 0.9);
}

.tech-item:nth-child(2) .tech-number {
    color: var(--accent);
}

.tech-item:nth-child(3) {
    border-left: 3px solid var(--accent);
}

.tech-item:nth-child(3)::before {
    background: radial-gradient(circle at top left, rgba(255, 107, 53, 0.05), transparent 60%);
}

.tech-item:nth-child(3):hover {
    border-color: rgba(255, 107, 53, 0.4);
    box-shadow: 
        0 12px 40px rgba(255, 107, 53, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.06);
}

:root[data-theme="light"] .tech-item:nth-child(3):hover {
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 
        0 12px 40px rgba(255, 107, 53, 0.15),
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 1);
    background: rgba(255, 255, 255, 0.9);
}

.tech-item:nth-child(3) .tech-number {
    color: var(--accent);
}

.tech-item:hover::before {
    opacity: 1;
}

.tech-item:hover {
    transform: translateY(-4px);
}

.tech-number {
    display: inline-block;
    margin: 0;
    font-size: clamp(4.8rem, 9.6vw, 7.2rem);
    font-family: 'Work Sans', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 200;
    color: var(--accent);
    letter-spacing: 0.08em;
    line-height: 1;
    transition: transform 0.3s ease;
}

.tech-item:hover .tech-number {
    transform: scale(1.05);
}

.tech-title {
    font-size: clamp(1.4rem, 2.5vw, 1.75rem);
    font-weight: 600;
    margin-top: 0.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.tech-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-weight: 300;
    font-size: 0.95rem;
}

/* Contact Section */
.contact {
    background: var(--bg);
    padding: var(--spacing-3xl) 0;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: var(--spacing-2xl);
}

/* Contact Form */
.contact-form {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    padding: var(--spacing-2xl);
    margin: var(--spacing-2xl) 0;
    text-align: left;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

:root[data-theme="light"] .contact-form {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

:root[data-theme="light"] .form-group input,
:root[data-theme="light"] .form-group select,
:root[data-theme="light"] .form-group textarea {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(255, 107, 53, 0.5);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 
        0 0 0 3px rgba(255, 107, 53, 0.1),
        0 4px 12px rgba(255, 107, 53, 0.08);
}

:root[data-theme="light"] .form-group input:focus,
:root[data-theme="light"] .form-group select:focus,
:root[data-theme="light"] .form-group textarea:focus {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(255, 107, 53, 0.4);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

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

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

/* Contact Info */
.contact-info {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.info-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.info-item svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.info-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* CTA Section */
.cta {
    background: var(--bg);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.cta-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
    font-weight: 300;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 999px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border);
    cursor: pointer;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
    background: var(--accent);
    color: var(--text-primary);
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--text-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--accent-light);
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* Footer */
footer {
    background: var(--bg);
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 300;
}

.footer-main p {
    margin: 0 0 var(--spacing-sm) 0;
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-divider {
    color: var(--border);
}

/* Responsive */
@media (max-width: 768px) {
    /* Navigation - already handled above */

    .logo {
        font-size: 1.125rem;
        gap: 0.5rem;
    }

    .logo span {
        display: inline;
    }

    .logo-img {
        height: 36px;
    }

    /* Hero */
    .hero {
        padding: 6rem 1rem 2rem;
        min-height: 90vh;
    }

    h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
        margin-bottom: var(--spacing-md);
    }

    .hero-subtitle {
        font-size: clamp(1rem, 4vw, 1.125rem);
        margin-bottom: var(--spacing-xl);
    }

    /* Sections */
    section {
        padding: var(--spacing-xl) 0;
    }

    .section-container {
        padding: 0 1rem;
    }

    h2 {
        font-size: clamp(1.5rem, 6vw, 2rem);
        margin-bottom: var(--spacing-lg);
    }

    /* Products */
    .products-header {
        padding: 0 1rem;
    }

    .products-scroll {
        padding: var(--spacing-lg) 1rem;
    }

    .products-grid {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .product-card {
        padding: var(--spacing-lg);
        scroll-margin-top: 180px;
    }

    .product-icon {
        width: 60px;
        height: 60px;
        margin-bottom: var(--spacing-sm);
    }

    .product-name {
        font-size: 1.25rem;
    }

    /* Tech */
    .tech-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .tech-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    /* Ethics */
    .ethics-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .ethics-item {
        flex-direction: column;
        padding: var(--spacing-md);
        border-left: none;
        border-top: 3px solid var(--accent);
    }

    /* Recruiting */
    .recruiting-content {
        font-size: clamp(0.95rem, 4vw, 1rem);
    }

    .recruiting-cta {
        margin-top: var(--spacing-lg);
    }

    .recruiting-cta a {
        font-size: 1rem;
    }

    /* Slogan */
    .slogan {
        padding: var(--spacing-xl) 0;
    }

    .slogan-text {
        font-size: clamp(1.125rem, 5vw, 1.5rem);
    }

    /* Contact */
    .contact {
        padding: var(--spacing-xl) 0;
    }
    
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    /* CTA */
    .cta-title {
        font-size: clamp(1.25rem, 5vw, 1.5rem);
    }

    .cta-subtitle {
        font-size: clamp(0.9rem, 4vw, 1rem);
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }

    /* Footer */
    .footer-content {
        padding: 0 1rem;
    }
    
    /* Back to Top */
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
    }
    
    .back-to-top svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 5.5rem 1rem 1.5rem;
    }

    h1 {
        font-size: clamp(1.6rem, 10vw, 2.25rem);
    }

    .hero-subtitle {
        font-size: clamp(0.95rem, 4.8vw, 1.05rem);
    }

    .products-scroll {
        padding: var(--spacing-md) 0.75rem;
    }

    .product-card {
        padding: var(--spacing-md);
    }
}

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

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 40px;
    background: var(--border);
    animation: scroll 2s ease-in-out infinite;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background: var(--text-secondary);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0%, 100% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 0.6;
        transform: translateX(-50%) translateY(20px);
    }
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 27ch;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}


/* Back to TINROBOT Button in Nav */
.back-to-tinrobot-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-right: 0.5rem;
}

.back-to-tinrobot-nav:hover {
    background: rgba(0, 180, 216, 0.15);
    border-color: var(--accent);
    transform: translateX(-3px);
    box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
}

.back-to-tinrobot-nav .back-icon {
    width: 20px;
    height: 20px;
    stroke: var(--text-secondary);
    transition: all 0.3s ease;
}

.back-to-tinrobot-nav:hover .back-icon {
    stroke: var(--accent-light);
    transform: translateX(-2px);
}

:root[data-theme="light"] .back-to-tinrobot-nav {
    background: transparent;
}

:root[data-theme="light"] .back-to-tinrobot-nav:hover {
    background: rgba(0, 180, 216, 0.1);
}

@media (max-width: 768px) {
    .back-to-tinrobot-nav {
        width: 36px;
        height: 36px;
        margin-right: 0.5rem;
    }
    
    .back-to-tinrobot-nav .back-icon {
        width: 18px;
        height: 18px;
    }
}
.nav-mobile-subheading,
.nav-mobile-subitem {
    display: none;
}

.nav-sub-link {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.nav-sub-link:hover {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .nav-mobile-subheading,
    .nav-mobile-subitem {
        display: block;
    }

    .nav-mobile-subheading {
        font-size: 0.85rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--text-secondary);
        margin-top: var(--spacing-md);
    }

    .nav-mobile-subitem {
        margin-left: 0.25rem;
    }

    .nav-mobile-subitem .nav-sub-link {
        font-size: 1.05rem;
        color: var(--text-primary);
        opacity: 0.85;
    }

    .nav-mobile-subitem .nav-sub-link:hover {
        opacity: 1;
    }
}