:root {
  --bg: #ffffff;
  --bg-alt: #eef4fb;
  --surface: #ffffff;
  --text: #0b2239;
  --text-muted: #5a6e85;
  --border: #d6e2f0;

  /* Navy scale — anchored on brand Navy #063A70 (navy-700) */
  --navy-50:  #eef4fb;
  --navy-100: #d7e6f5;
  --navy-200: #aecdeb;
  --navy-300: #7aabdd;
  --navy-400: #3f80c4;
  --navy-500: #1a5da3;
  --navy-600: #0d4a87;
  --navy-700: #063a70;
  --navy-800: #052d57;
  --navy-900: #041f3d;

  /* Cyan scale — anchored on brand Cyan #00B8E6 (cyan-500) */
  --cyan-100: #ccf1fa;
  --cyan-200: #99e3f5;
  --cyan-300: #4dcdee;
  --cyan-400: #1ac2ea;
  --cyan-500: #00b8e6;
  --cyan-600: #0093b8;
  --cyan-700: #006e8a;

  --brand: var(--navy-700);
  --brand-strong: var(--navy-800);
  --brand-deep: var(--navy-900);
  --brand-bright: var(--cyan-500);
  --brand-soft: var(--navy-100);

  /* Cyan accent — the second half of the brand pair */
  --accent: var(--cyan-500);
  --accent-strong: var(--cyan-600);

  --shadow-sm: 0 1px 2px rgba(4, 31, 61, 0.06);
  --shadow-md: 0 10px 24px rgba(6, 58, 112, 0.16);
  --shadow-lg: 0 24px 60px rgba(4, 31, 61, 0.22);
  --radius: 12px;
  --radius-lg: 18px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); }
a[href^="tel:"] { white-space: nowrap; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.brand-logo {
  display: block;
  height: 24px;
  width: auto;
}

.lang-toggle {
  display: inline-flex;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
}

.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 6px 12px;
  font: inherit;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.04em;
}

.lang-toggle button.is-active {
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 720px) {
  .lang-toggle button { padding: 4px 9px; font-size: 11.5px; }
  .brand-logo { height: 21px; }
}
@media (max-width: 440px) {
  .header-inner { gap: 12px; }
  .brand-logo { height: 17px; }
  .lang-toggle button { padding: 4px 8px; font-size: 11px; }
  .btn-sm { padding: 0 11px; font-size: 12.5px; }
}
@media (max-width: 360px) {
  .brand-logo { height: 16px; }
  .header-actions .btn-sm { display: none; }
}

/* Hero — brand navy ground with cyan light */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 132px;
  color: #eaf3fb;
  background:
    radial-gradient(900px 520px at 85% 0%, rgba(0, 184, 230, 0.42), transparent 62%),
    radial-gradient(700px 460px at 5% 100%, rgba(0, 184, 230, 0.26), transparent 70%),
    linear-gradient(140deg, #041f3d 0%, #063a70 48%, #0d4a87 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(2px 2px at 18% 28%, rgba(255,255,255,0.35), transparent 60%),
    radial-gradient(2px 2px at 72% 66%, rgba(255,255,255,0.25), transparent 60%),
    radial-gradient(2px 2px at 42% 82%, rgba(255,255,255,0.3), transparent 60%);
  pointer-events: none;
  opacity: 0.6;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin: 0 0 22px;
  color: #ffffff;
}

.hero-sub {
  font-size: clamp(16px, 1.6vw, 19px);
  color: rgba(234, 243, 251, 0.84);
  margin: 0;
  word-break: keep-all;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn-store {
  gap: 9px;
  background: #fff;
  color: var(--brand);
  box-shadow: 0 8px 22px rgba(4, 31, 61, 0.28);
}
.btn-store:hover {
  color: var(--brand);
  background: #f3f8fd;
  box-shadow: 0 10px 26px rgba(4, 31, 61, 0.36);
}
.btn-store svg {
  width: 19px;
  height: 19px;
  flex: none;
}

.btn-hero-ghost {
  background: transparent;
  color: #eaf3fb;
  border: 1px solid rgba(234, 243, 251, 0.45);
}
.btn-hero-ghost:hover {
  color: #fff;
  border-color: rgba(234, 243, 251, 0.85);
  background: rgba(255, 255, 255, 0.08);
}

@media (max-width: 520px) {
  .hero-actions { gap: 10px; }
  .hero-actions .btn { height: 44px; padding: 0 18px; font-size: 14px; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform .12s ease, background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 8px 22px rgba(6, 58, 112, 0.38);
}
.btn-primary:hover {
  background: var(--brand-strong);
  color: #fff;
  box-shadow: 0 10px 26px rgba(5, 45, 87, 0.48);
}

.btn-ghost {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 14px;
  border-radius: 8px;
}
.btn-primary.btn-sm {
  box-shadow: 0 4px 14px rgba(6, 58, 112, 0.30);
}
@media (max-width: 720px) {
  .btn-sm { padding: 0 13px; font-size: 13px; }
}

/* Wave transition under hero */
.hero-deco {
  position: absolute;
  inset: auto 0 -1px 0;
  height: 80px;
  background:
    radial-gradient(60% 100% at 20% 100%, rgba(0, 184, 230, 0.34), transparent 70%),
    radial-gradient(60% 100% at 80% 100%, rgba(26, 93, 163, 0.34), transparent 70%);
  pointer-events: none;
}

/* Sections */
.section {
  padding: 96px 0;
  scroll-margin-top: 80px;
}
.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 680px;
  margin: 0 0 56px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--brand-strong);
  background: var(--brand-soft);
  padding: 4px 10px;
  border-radius: 999px;
  line-height: 1.4;
}
.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  margin-right: 7px;
}

.section-title {
  font-size: clamp(28px, 3.2vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 18px;
}
.section-head .section-title:last-child { margin-bottom: 0; }

/* Product */
.product-list {
  display: grid;
  gap: 16px;
  max-width: 720px;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  transition: box-shadow .18s ease, border-color .18s ease;
}
.product-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--brand-bright);
}

.product-head {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.product-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: block;
  flex: none;
}

.product-name {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--brand);
}

.product-body {
  margin: 0 0 20px;
  color: var(--text-muted);
  font-size: 15.5px;
  word-break: keep-all;
}

.product-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.product-link:hover {
  border-color: var(--brand);
  color: var(--brand);
}
.product-link svg {
  width: 15px;
  height: 15px;
  flex: none;
}
.product-link.is-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
.product-link.is-primary:hover {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
  color: #fff;
}

/* Contact */
.contact-inner .section-title { margin-bottom: 12px; }

.contact-body {
  color: var(--text-muted);
  font-size: 17px;
  margin: 0 0 40px;
  max-width: 620px;
  word-break: keep-all;
}

.contact-address {
  font-size: 17px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: -0.005em;
  overflow-wrap: anywhere;
}
.contact-address:hover {
  color: var(--brand-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.contact-channels {
  display: grid;
  gap: 0;
  max-width: 720px;
  border-top: 1px solid var(--border);
}
.contact-channel {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 4px 32px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.contact-channel-label {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  word-break: keep-all;
}
.contact-channel > a { justify-self: start; }
.contact-channel-note {
  grid-column: 2;
  margin: 4px 0 0;
  font-size: 13.5px;
  color: var(--text-muted);
  word-break: keep-all;
}

@media (max-width: 620px) {
  .contact-channel {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .contact-channel-note { grid-column: 1; }
}

/* Footer */
.site-footer {
  padding: 40px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  background: #fff;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  font-size: 15px;
  margin-bottom: 18px;
}
.footer-logo {
  display: block;
  height: 22px;
  width: auto;
}
.biz-info {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 0 0 16px;
  max-width: 860px;
}
.biz-info .biz-item { white-space: nowrap; }
.biz-info .biz-item.addr { white-space: normal; }
.biz-info .label { opacity: 0.65; margin-right: 5px; }
.biz-info a:hover { color: var(--brand); }
.footer-copy {
  margin: 0;
  font-size: 13px;
  opacity: 0.8;
}