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

:root {
    --color-background: #fbfbfb;
    --color-text: #131316;
    --color-text-light: #4f4f4f;
    --color-primary: #171e2d;
    --color-secondary: #943fff;
    --color-accent: #a965ff;
    --color-dark: #1f1f1f;
    --color-white: #ffffff;
    --shadow-lg: 0 30px 60px rgba(23, 30, 45, 0.18);
    --shadow-card: 0 24px 40px rgba(12, 16, 25, 0.25);
}

body {
    font-family: 'Noto Sans KR', 'Unbounded', sans-serif;
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
}

a:hover {
    color: inherit;
}

.container {
    width: min(1200px, 100% - 48px);
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    inset: 0 0 auto 0;
    height: 80px;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(145, 158, 171, 0.15);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

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

.logo {
    font-family: 'Unbounded', sans-serif;
    font-size: 28px;
    font-weight: 500;
    text-decoration: none;
    color: #222222;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    color: var(--color-text);
    position: relative;
    padding-bottom: 4px;
    transition: color 0.3s ease;
}

.nav-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    cursor: pointer;
}

.hamburger span {
    display: block;
    height: 3px;
    width: 24px;
    background: var(--color-text);
    border-radius: 999px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

main {
    margin-top: 80px;
}

section {
    padding: 120px 0;
}

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 20% 20%, rgba(148, 63, 255, 0.14), transparent 50%),
                radial-gradient(circle at 80% 10%, rgba(93, 224, 255, 0.12), transparent 55%),
                var(--color-background);
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.5;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 64px;
    align-items: center;
}

.hero-text {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 520px;
}

.hero-eyebrow {
    font-family: 'Unbounded', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-secondary);
    letter-spacing: 0.04em;
}

.hero h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

.hero-description {
    font-size: 18px;
    color: var(--color-text-light);
    line-height: 1.8;
}

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

.hero-visual {
    position: relative;
}

.hero-visual-inner {
    position: relative;
    width: clamp(320px, 48vw, 640px);
    margin: 0 auto;
}

.hero-landing-image {
    width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 30px 50px rgba(15, 26, 46, 0.28));
    border-radius: 36px;
}

/* Service */
.service {
    background: var(--color-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.service-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.service-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.service-header h2 {
    font-size: clamp(28px, 4vw, 38px);
    font-weight: 700;
}

.service-logos {
    display: flex;
    align-items: center;
    gap: 20px;
}

.service-logos img {
    height: 64px;
    width: auto;
}

.service-description {
    font-size: 20px;
    line-height: 1.9;
    color: rgba(235, 235, 235, 0.92);
    max-width: 820px;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 32px;
}

.service-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 24px;
    padding: 32px 28px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 18px;
    min-height: 260px;
}

.service-card img {
    width: 60px;
    height: 60px;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 600;
}

.service-card p {
    font-size: 17px;
    line-height: 1.7;
    color: rgba(240, 240, 240, 0.85);
}

/* Vision */
.vision {
    background: linear-gradient(90deg, #f0f7fe 0%, #ffffff 60%);
    position: relative;
}

.vision-container {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 900px;
}

.vision h2 {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
    color: #16171a;
}

.vision-text {
    display: flex;
    flex-direction: column;
    gap: 20px;
    font-size: 20px;
    color: var(--color-text-light);
    line-height: 1.9;
}

/* Slogan */
.slogan {
    padding: 96px 0;
    background: linear-gradient(90deg, rgba(147, 63, 255, 0.08) 0%, rgba(11, 145, 255, 0.12) 50%, rgba(0, 0, 0, 0.85) 90%);
    color: var(--color-white);
}

.slogan-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    font-family: 'Unbounded', sans-serif;
    letter-spacing: 0.02em;
}

.slogan-text {
    font-size: clamp(24px, 3vw, 32px);
    color: #222222;
}

.slogan-brand {
    font-size: clamp(24px, 3vw, 32px);
}

/* Footer */
.footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 48px 0;
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-size: 16px;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(120deg, var(--color-secondary), #5f9bff);
    color: var(--color-white);
    box-shadow: 0 18px 32px rgba(148, 63, 255, 0.28);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 40px rgba(148, 63, 255, 0.35);
}

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

.btn-dark:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 24px rgba(31, 31, 31, 0.25);
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 960px) {
    section {
        padding: 100px 0;
    }

    .nav-menu {
        position: fixed;
        inset: 80px 0 0 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 48px 24px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .hamburger {
        display: flex;
    }

    .hero-visual-inner {
        aspect-ratio: 3 / 5;
    }

    .service-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .slogan-container {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    main {
        margin-top: 72px;
    }

    .navbar {
        height: 72px;
    }

    .container {
        width: min(100% - 32px, 100%);
    }

    .hero {
        padding: 96px 0;
    }

    .service {
        padding: 96px 0;
    }

    .vision {
        padding: 96px 0;
    }

    .service-card {
        padding: 28px 24px;
    }
}