:root {
    --primary-color: #6C5CE7;
    /* Vibrant Purple */
    --secondary-color: #00D4FF;
    /* Electric Cyan */
    --accent-color: #FF3366;
    /* Emotion/Heartbeat accent */
    --accent-orange: #FF6B35;
    /* Energy Orange */
    --accent-green: #00F5A0;
    /* Fresh Green */
    --bg-color: #F8F9FF;
    /* Soft Lavender White */
    --bg-gradient: linear-gradient(135deg, #F8F9FF 0%, #E8ECFF 100%);
    --surface-color: #FFFFFF;
    --card-bg: rgba(255, 255, 255, 0.8);
    --text-color: #1A1A2E;
    --text-muted: #6C6C80;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-kr: 'Noto Sans KR', sans-serif;
    --container-width: 1200px;
    --header-height: 80px;
}

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

body {
    font-family: var(--font-main);
    background: var(--bg-gradient);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-main);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 194, 255, 0.3);
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(108, 92, 231, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 28px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(108, 92, 231, 0.3));
    transition: all 0.3s ease;
}

.logo:hover .logo-img {
    filter: drop-shadow(0 4px 12px rgba(108, 92, 231, 0.5));
    transform: scale(1.05);
}

.nav-list {
    display: flex;
    gap: 40px;
}

.nav-list a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}

.menu-icon {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active .menu-icon:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(108, 92, 231, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
    animation: gradientShift 15s ease infinite;
    z-index: -1;
    overflow: hidden;
}

/* Floating Products */
.floating-product {
    position: absolute;
    opacity: 0.15;
    filter: blur(1px);
    pointer-events: none;
}

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

.product-1 {
    width: 250px;
    top: 10%;
    right: 8%;
    animation: floatProduct1 20s ease-in-out infinite;
}

.product-2 {
    width: 180px;
    bottom: 15%;
    left: 5%;
    animation: floatProduct2 18s ease-in-out infinite;
}

.product-3 {
    width: 200px;
    top: 50%;
    right: 15%;
    animation: floatProduct3 22s ease-in-out infinite;
}

@keyframes floatProduct1 {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.12;
    }

    25% {
        transform: translate(30px, -20px) rotate(5deg);
        opacity: 0.18;
    }

    50% {
        transform: translate(-20px, -40px) rotate(-3deg);
        opacity: 0.15;
    }

    75% {
        transform: translate(10px, -10px) rotate(2deg);
        opacity: 0.2;
    }
}

@keyframes floatProduct2 {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.1;
    }

    33% {
        transform: translate(-25px, 25px) rotate(-4deg);
        opacity: 0.16;
    }

    66% {
        transform: translate(15px, -15px) rotate(3deg);
        opacity: 0.13;
    }
}

@keyframes floatProduct3 {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.14;
    }

    40% {
        transform: translate(-30px, 20px) rotate(-5deg);
        opacity: 0.18;
    }

    80% {
        transform: translate(20px, -30px) rotate(4deg);
        opacity: 0.11;
    }
}

/* Tech Keywords */
.tech-keyword {
    position: absolute;
    color: rgba(108, 92, 231, 0.2);
    font-weight: 700;
    font-size: 18px;
    pointer-events: none;
    white-space: nowrap;
    font-family: var(--font-kr);
}

.keyword-1 {
    top: 20%;
    left: 10%;
    animation: floatKeyword 15s ease-in-out infinite;
}

.keyword-2 {
    top: 35%;
    right: 12%;
    animation: floatKeyword 18s ease-in-out infinite 2s;
}

.keyword-3 {
    bottom: 25%;
    left: 15%;
    animation: floatKeyword 20s ease-in-out infinite 4s;
}

.keyword-4 {
    top: 60%;
    right: 20%;
    animation: floatKeyword 16s ease-in-out infinite 1s;
}

.keyword-5 {
    bottom: 35%;
    right: 8%;
    animation: floatKeyword 19s ease-in-out infinite 3s;
}

.keyword-6 {
    top: 75%;
    left: 8%;
    animation: floatKeyword 17s ease-in-out infinite 5s;
}

@keyframes floatKeyword {

    0%,
    100% {
        transform: translateY(0);
        opacity: 0.15;
    }

    50% {
        transform: translateY(-30px);
        opacity: 0.25;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-title {
    font-size: 80px;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-orange) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: hueRotate 8s ease-in-out infinite;
}

@keyframes hueRotate {

    0%,
    100% {
        filter: hue-rotate(0deg);
    }

    50% {
        filter: hue-rotate(10deg);
    }
}

.hero-desc {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 50px;
    font-family: var(--font-kr);
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

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

/* Sections General */
.section {
    padding: 120px 0;
}

.section-header {
    margin-bottom: 60px;
    text-align: center;
}

.section-title {
    font-size: 40px;
    margin-bottom: 16px;
}

.section-subtitle {
    color: var(--text-muted);
    font-family: var(--font-kr);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.about-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    border: 2px solid rgba(108, 92, 231, 0.1);
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
}

.about-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 16px 48px rgba(108, 92, 231, 0.2);
}

.about-card:nth-child(1) {
    border-top: 3px solid var(--primary-color);
}

.about-card:nth-child(2) {
    border-top: 3px solid var(--secondary-color);
}

.about-card:nth-child(3) {
    border-top: 3px solid var(--accent-orange);
}

.icon-box {
    font-size: 32px;
    margin-bottom: 24px;
}

.about-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.about-card p {
    color: var(--text-muted);
    font-family: var(--font-kr);
    font-size: 15px;
}

/* Product Section */
.product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(0, 194, 255, 0.1);
    color: var(--secondary-color);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 20px;
}

.product-title {
    font-size: 56px;
    margin-bottom: 24px;
}

.product-desc {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-family: var(--font-kr);
}

.feature-list li {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    padding-left: 20px;
    border-left: 2px solid var(--secondary-color);
}

.feature-list strong {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 4px;
    text-transform: uppercase;
}

.feature-list span {
    color: var(--text-muted);
    font-family: var(--font-kr);
}

.visual-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 212, 255, 0.1));
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px solid rgba(108, 92, 231, 0.2);
    position: relative;
    backdrop-filter: blur(10px);
    overflow: hidden;
    padding: 30px;
}

.visual-placeholder::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: conic-gradient(from 0deg, var(--primary-color), var(--secondary-color), var(--accent-orange), var(--primary-color));
    animation: rotate 10s linear infinite;
    opacity: 0.1;
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

.device-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.device-image {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(108, 92, 231, 0.3));
    animation: deviceFloat 4s ease-in-out infinite;
}

@keyframes deviceFloat {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

.temp-indicator {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 20px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    animation: indicatorPulse 2s ease-in-out infinite;
}

.temp-indicator.cold {
    top: 15%;
    left: 10%;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.temp-indicator.hot {
    bottom: 15%;
    right: 10%;
    border: 2px solid var(--accent-orange);
    color: var(--accent-orange);
}

@keyframes indicatorPulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.temp-icon {
    font-size: 18px;
}

.ai-pulse {
    position: absolute;
    width: 60%;
    height: 60%;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: aiPulseRing 3s ease-out infinite;
    opacity: 0.5;
}

@keyframes aiPulseRing {
    0% {
        transform: scale(0.8);
        opacity: 0.8;
    }

    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

.controls-overlay {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.control-btn {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(108, 92, 231, 0.2);
    border-radius: 16px;
    padding: 14px 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.control-btn:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
}

.control-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: transparent;
}

.control-btn .icon {
    font-size: 24px;
}

.control-btn .label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
}

.control-btn.active .label {
    color: white;
}

.circle-anim {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 2px solid var(--secondary-color);
    position: absolute;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* Target Section */
.target {
    background: linear-gradient(135deg, #E8ECFF 0%, #F0F3FF 100%);
    position: relative;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.target-item {
    padding: 30px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border-left: 3px solid var(--secondary-color);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.target-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
}

.target-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--secondary-color);
}

.target-item p {
    color: var(--text-muted);
    font-family: var(--font-kr);
    font-size: 14px;
}

/* Business Section */
.business {
    text-align: center;
}

.business-content {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.05), rgba(0, 212, 255, 0.05));
    backdrop-filter: blur(10px);
    padding: 80px;
    border-radius: 30px;
    border: 2px solid rgba(108, 92, 231, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.05);
}

.business-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.link-item {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 4px;
}

.link-item:hover {
    color: var(--secondary-color);
    border-color: var(--secondary-color);
}

/* Support Section */
.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.support-box {
    padding: 40px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(108, 92, 231, 0.1);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
}

.support-box:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 32px rgba(108, 92, 231, 0.15);
}

.support-box h3 {
    margin-bottom: 10px;
}

.support-box p {
    color: var(--text-muted);
    font-family: var(--font-kr);
    margin-bottom: 20px;
    font-size: 14px;
}

.text-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

/* Footer */
.footer {
    padding: 80px 0 30px;
    background: linear-gradient(to bottom, transparent, rgba(108, 92, 231, 0.03));
    border-top: 1px solid rgba(108, 92, 231, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-brand-col {
    align-items: flex-start;
}

.footer-brand-col .footer-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    margin-bottom: 16px;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
    font-family: var(--font-kr);
    text-align: left;
}

.footer-heading {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-color);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 14px;
    font-family: var(--font-kr);
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 16px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(108, 92, 231, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    transform: translateY(-3px);
}

.social-icon svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(108, 92, 231, 0.08);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 13px;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: var(--text-muted);
    font-size: 13px;
    transition: color 0.3s ease;
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .header {
        padding: 0 20px;
    }

    .logo-img {
        height: 32px;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
        padding-top: 80px;
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: 20px;
    }

    .nav-list li {
        width: 100%;
        border-bottom: 1px solid rgba(108, 92, 231, 0.1);
    }

    .nav-list a {
        display: block;
        padding: 16px 0;
        font-size: 16px;
        color: var(--text-color);
    }

    .nav-list a:hover {
        color: var(--primary-color);
        padding-left: 10px;
    }

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

    /* Hero Section Mobile */
    .hero {
        min-height: 600px;
        height: auto;
        padding-top: 80px;
        padding-bottom: 60px;
    }

    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 16px;
    }

    .hero-title {
        font-size: 40px;
        line-height: 1.2;
    }

    .hero-desc {
        font-size: 16px;
        margin-bottom: 30px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

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

    /* Hide or reduce floating products on mobile */
    .floating-product {
        opacity: 0.05;
    }

    .product-1,
    .product-3 {
        display: none;
    }

    .product-2 {
        width: 150px;
    }

    .tech-keyword {
        font-size: 14px;
        opacity: 0.15;
    }

    /* Section spacing */
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 32px;
    }

    .section-subtitle {
        font-size: 14px;
    }

    /* Grid layouts */
    .about-grid,
    .target-grid,
    .support-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-title {
        font-size: 36px;
    }

    .product-desc {
        font-size: 16px;
    }

    /* Visual elements */
    .visual-placeholder {
        margin-top: 30px;
    }

    .temp-indicator {
        padding: 8px 14px;
        font-size: 12px;
    }

    .controls-overlay {
        gap: 8px;
        bottom: 15px;
    }

    .control-btn {
        padding: 10px 12px;
    }

    .control-btn .icon {
        font-size: 20px;
    }

    .control-btn .label {
        font-size: 10px;
    }

    /* Business Section */
    .business-content {
        padding: 40px 20px;
    }

    .business-links {
        flex-direction: column;
        gap: 20px;
    }

    /* Footer Mobile */
    .footer {
        padding: 60px 0 30px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-legal {
        flex-direction: column;
        gap: 12px;
    }
}