:root {
  --ink: #07111f;
  --navy: #0c2340;
  --navy-2: #133057;
  --cyan: #1ec8c0;
  --cyan-2: #7ef0ea;
  --gold: #d4a84b;
  --paper: #f4f7fa;
  --white: #ffffff;
  --muted: #5d6d7e;
  --text: #1c2b3a;
  --line: rgba(12, 35, 64, 0.1);
  --shadow: 0 18px 50px rgba(7, 17, 31, 0.12);
  --radius: 18px;
  --header-h: 76px;
  --max: 1140px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: Pretendard, "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: -0.01em;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: var(--navy);
}

p {
  margin: 0;
}

.en {
  font-family: Outfit, Pretendard, sans-serif;
  letter-spacing: 0.02em;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 1000;
  background: var(--cyan);
  color: var(--ink);
  padding: 8px 12px;
  border-radius: 8px;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(7, 17, 31, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(7, 17, 31, 0.94);
  border-bottom-color: rgba(126, 240, 234, 0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  min-width: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 11px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: Outfit, Pretendard, sans-serif;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-text span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

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

.site-nav a.btn-primary,
.site-nav a.btn-primary:hover,
.site-nav a.btn-primary.is-active {
  color: var(--ink);
  background: var(--cyan);
}

.site-nav a.btn-primary:hover,
.site-nav a.btn-primary.is-active {
  background: var(--cyan-2);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle span::before {
  top: -7px;
}

.nav-toggle span::after {
  top: 7px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--cyan);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--cyan-2);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan-2);
}

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

.btn-dark:hover {
  background: var(--navy-2);
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 20%, rgba(30, 200, 192, 0.22), transparent 28%),
    radial-gradient(circle at 18% 80%, rgba(19, 48, 87, 0.9), transparent 36%),
    linear-gradient(160deg, #07111f 0%, #0c2340 55%, #0a1b33 100%);
  color: var(--white);
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 0.8px, transparent 0.8px);
  background-size: 22px 22px;
  opacity: 0.25;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  padding: 72px 0 88px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan-2);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.hero h1 {
  color: var(--white);
  font-size: clamp(36px, 5vw, 62px);
  font-weight: 800;
  margin-bottom: 18px;
}

.hero h1 span {
  display: block;
  color: var(--cyan-2);
}

.lede {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-visual {
  position: relative;
  height: 420px;
  display: grid;
  place-items: center;
}

.ring {
  position: absolute;
  border: 1.5px solid rgba(126, 240, 234, 0.28);
  border-radius: 50%;
  animation: pulse 8s ease-in-out infinite;
}

.ring-1 { width: 180px; height: 180px; }
.ring-2 { width: 270px; height: 270px; animation-delay: -1.5s; }
.ring-3 { width: 360px; height: 360px; animation-delay: -3s; }

.core {
  width: 92px;
  height: 92px;
  border-radius: 28px;
  background: linear-gradient(160deg, #7ef0ea, #1ec8c0);
  box-shadow: 0 0 60px rgba(30, 200, 192, 0.45);
  position: relative;
  z-index: 1;
}

.core::after {
  content: "";
  position: absolute;
  inset: 18px 42px 18px 42px;
  background: var(--navy);
  border-radius: 3px;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.06); opacity: 1; }
}

.section {
  padding: 88px 0;
}

.section-head {
  max-width: 680px;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: clamp(28px, 3vw, 40px);
  margin: 8px 0 12px;
}

.section-head p,
.muted {
  color: var(--muted);
}

.grid-3,
.grid-2,
.product-grid {
  display: grid;
  gap: 20px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: 1fr 1fr;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 8px 24px rgba(7, 17, 31, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(30, 200, 192, 0.35);
}

.icon-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(30, 200, 192, 0.12);
  color: #0e8f89;
  font-weight: 800;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.card ul,
.card ol {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.card li + li {
  margin-top: 8px;
}

.paper {
  background: var(--paper);
}

.cta-band {
  background:
    linear-gradient(135deg, rgba(30, 200, 192, 0.16), transparent 42%),
    var(--navy);
  color: var(--white);
}

.cta-band h2 {
  color: var(--white);
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.page-hero {
  background:
    radial-gradient(circle at 88% 0%, rgba(30, 200, 192, 0.2), transparent 30%),
    linear-gradient(160deg, #07111f, #0c2340);
  color: var(--white);
  padding: 72px 0 56px;
}

.page-hero h1 {
  color: var(--white);
  font-size: clamp(34px, 4vw, 52px);
  margin-bottom: 12px;
}

.page-hero p {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.78);
}

.timeline {
  display: grid;
  gap: 0;
  border-left: 2px solid rgba(30, 200, 192, 0.35);
  margin-left: 8px;
  padding-left: 28px;
}

.timeline-item {
  position: relative;
  padding: 0 0 32px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(30, 200, 192, 0.16);
}

.timeline-item strong {
  display: block;
  color: var(--navy);
  margin-bottom: 4px;
}

.product-grid {
  grid-template-columns: repeat(3, 1fr);
}

.product-card {
  overflow: hidden;
  padding: 0;
}

.product-visual {
  height: 180px;
  background:
    radial-gradient(circle at 70% 30%, rgba(126, 240, 234, 0.55), transparent 32%),
    linear-gradient(160deg, #0c2340, #133057);
  position: relative;
}

.product-visual.alt-2 {
  background:
    radial-gradient(circle at 30% 70%, rgba(212, 168, 75, 0.35), transparent 34%),
    linear-gradient(160deg, #0c2340, #1a3d63);
}

.product-visual.alt-3 {
  background:
    radial-gradient(circle at 50% 50%, rgba(30, 200, 192, 0.4), transparent 36%),
    linear-gradient(160deg, #082033, #0c2340);
}

.product-body {
  padding: 24px 26px 28px;
}

.product-body ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
}

.info-list {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.info-list div {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.info-list dt {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.info-list dd {
  margin: 0;
  font-weight: 600;
  color: var(--navy);
}

.info-list a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.contact-form {
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--white);
  color: var(--text);
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid rgba(30, 200, 192, 0.45);
  border-color: var(--cyan);
}

.is-invalid {
  border-color: #c24141 !important;
}

.hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

.status-banner {
  border-radius: 12px;
  padding: 14px 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.status-banner.is-success {
  background: #e8faf6;
  color: #0b6b63;
}

.status-banner.is-error {
  background: #fdecec;
  color: #9b1c1c;
}

.site-footer {
  background: #07111f;
  color: rgba(255, 255, 255, 0.76);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 28px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer h3 {
  color: var(--white);
  font-size: 15px;
  margin-bottom: 14px;
}

.site-footer p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.6;
}

.site-footer a {
  display: block;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.72);
}

.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.map-wrap iframe {
  display: block;
  width: 100%;
  height: 360px;
  border: 0;
}

.site-footer a:hover {
  color: var(--cyan-2);
}

.copyright {
  padding-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.not-found {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 80px 0;
}

@media (max-width: 960px) {
  .hero-inner,
  .grid-3,
  .product-grid,
  .contact-layout,
  .footer-grid,
  .cta-inner,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    height: 280px;
  }

  .cta-inner {
    display: grid;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: grid;
    place-items: center;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(7, 17, 31, 0.98);
    flex-direction: column;
    justify-content: flex-start;
    padding: 28px 20px;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }

  .site-nav.is-open {
    transform: none;
  }

  .site-nav a,
  .site-nav .btn {
    width: 100%;
    justify-content: center;
  }

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

  .hero-inner {
    padding: 48px 0 64px;
  }
}