/* SEORYU.COM — Landing v0.1
 * Palette: deep navy #0F2540 · sand gold #C8A24C · ink #1F2937 · cloud #F5F4EE · white #FFFFFF
 */

:root {
  --color-navy: #0F2540;
  --color-navy-soft: #1A3556;
  --color-gold: #C8A24C;
  --color-gold-soft: #E0C079;
  --color-ink: #1F2937;
  --color-ink-soft: #4B5563;
  --color-mute: #6B7280;
  --color-cloud: #F5F4EE;
  --color-cloud-soft: #FAF9F4;
  --color-line: #E5E1D6;
  --color-white: #FFFFFF;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 37, 64, 0.06), 0 4px 12px rgba(15, 37, 64, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 37, 64, 0.08), 0 12px 32px rgba(15, 37, 64, 0.06);

  --font-kr: "Pretendard", "Pretendard Variable", -apple-system, BlinkMacSystemFont, "SF Pro KR", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  --font-serif: "Noto Serif KR", "Nanum Myeongjo", "Apple SD Gothic Neo", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-kr);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-navy); }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-line);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-navy);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--color-navy);
  color: var(--color-gold);
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-name {
  font-size: 17px;
  letter-spacing: 0.06em;
}

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 14px;
  color: var(--color-ink-soft);
}

.site-nav a:hover {
  color: var(--color-navy);
}

.nav-cta {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--color-navy);
  color: var(--color-white) !important;
  font-weight: 600;
  transition: background 0.18s ease;
}
.nav-cta:hover { background: var(--color-navy-soft); }

/* Hero */
.hero {
  padding: 92px 0 96px;
  background:
    radial-gradient(1200px 480px at 80% -20%, rgba(200, 162, 76, 0.10), transparent 60%),
    radial-gradient(900px 420px at 0% 20%, rgba(15, 37, 64, 0.06), transparent 60%),
    var(--color-cloud-soft);
  border-bottom: 1px solid var(--color-line);
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: none;
  color: var(--color-gold);
  font-weight: 600;
}

.hero-title {
  margin: 0 0 22px;
  font-family: var(--font-serif);
  font-size: clamp(34px, 5.4vw, 60px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-navy);
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 640px;
  margin: 0 0 32px;
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--color-ink-soft);
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-navy-soft);
  color: var(--color-white);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}
.btn-ghost:hover {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.hero-status {
  margin: 0;
  font-size: 13px;
  color: var(--color-mute);
}

/* Section common */
section.funnel,
section.domains,
section.uvp,
section.notify {
  padding: 84px 0;
}

section.domains { background: var(--color-cloud-soft); }
section.uvp { background: var(--color-white); }
section.notify {
  background: var(--color-navy);
  color: var(--color-white);
}

.section-title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-navy);
}

section.notify .section-title { color: var(--color-white); }

.section-sub {
  margin: 0 0 44px;
  max-width: 720px;
  color: var(--color-ink-soft);
  font-size: 16px;
}

section.notify .section-sub { color: rgba(255, 255, 255, 0.78); }

/* Funnel */
.funnel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.funnel-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.funnel-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.funnel-card--featured {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}
.funnel-card--featured h3 { color: var(--color-white); }
.funnel-card--featured p { color: rgba(255,255,255,0.85); }
.funnel-card--featured ul li { color: rgba(255,255,255,0.78); }
.funnel-card--featured .funnel-step { color: var(--color-gold); }

.funnel-step {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-gold);
  margin-bottom: 14px;
}

.funnel-card h3 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}

.funnel-card p {
  margin: 0 0 18px;
  font-size: 15px;
  color: var(--color-ink-soft);
}

.funnel-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--color-line);
  padding-top: 16px;
}
.funnel-card--featured ul { border-top-color: rgba(255,255,255,0.18); }
.funnel-card ul li {
  font-size: 14px;
  padding: 6px 0 6px 18px;
  position: relative;
  color: var(--color-ink-soft);
}
.funnel-card ul li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-gold);
  font-weight: 700;
}

/* Domains */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.domain-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.domain-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.domain-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: -0.005em;
}

.domain-card p {
  margin: 0;
  font-size: 14px;
  color: var(--color-ink-soft);
  line-height: 1.55;
}

/* UVP table */
.uvp-table {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
}
.uvp-row {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1.2fr;
  border-bottom: 1px solid var(--color-line);
}
.uvp-row:last-child { border-bottom: none; }
.uvp-row > div {
  padding: 18px 20px;
  font-size: 15px;
  color: var(--color-ink-soft);
}
.uvp-row > div + div { border-left: 1px solid var(--color-line); }
.uvp-head {
  background: var(--color-cloud);
  color: var(--color-navy);
}
.uvp-head > div {
  color: var(--color-navy);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
}
.uvp-row > div:last-child {
  background: rgba(200, 162, 76, 0.06);
  color: var(--color-navy);
  font-weight: 600;
}
.uvp-head > div:last-child {
  background: var(--color-navy);
  color: var(--color-white);
}

/* Notify */
.notify-inner { text-align: center; }
.notify .section-title { margin-bottom: 14px; }
.notify .btn-primary {
  background: var(--color-gold);
  color: var(--color-navy);
}
.notify .btn-primary:hover {
  background: var(--color-gold-soft);
  color: var(--color-navy);
}
.notify-foot {
  margin: 24px 0 0;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.notify-foot a {
  color: var(--color-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Footer */
.site-footer {
  background: var(--color-cloud);
  border-top: 1px solid var(--color-line);
  padding: 40px 0;
  font-size: 14px;
  color: var(--color-ink-soft);
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-navy);
  font-weight: 700;
  letter-spacing: 0.05em;
}
.footer-meta { text-align: right; }
.footer-meta p { margin: 4px 0; }
.footer-meta a { color: var(--color-navy); text-decoration: underline; text-underline-offset: 3px; }
.footer-status {
  margin-top: 12px !important;
  font-size: 12px;
  color: var(--color-mute);
  letter-spacing: 0.05em;
}

/* Responsive */
@media (max-width: 960px) {
  .funnel-grid { grid-template-columns: 1fr; }
  .domain-grid { grid-template-columns: repeat(2, 1fr); }
  .uvp-row { grid-template-columns: 1fr; }
  .uvp-row > div + div { border-left: none; border-top: 1px solid var(--color-line); }
  .site-nav { gap: 18px; font-size: 13px; }
  .site-nav a:not(.nav-cta) { display: none; }
}

@media (max-width: 560px) {
  .domain-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 72px; }
  section.funnel, section.domains, section.uvp, section.notify { padding: 60px 0; }
  .footer-inner { flex-direction: column; }
  .footer-meta { text-align: left; }
}