:root {
  --background: #fffdf8;
  --surface: #ffffff;
  --surface-warm: #fff7e6;
  --text: #241c14;
  --muted: #675d52;
  --border: #eadfce;
  --primary: #d9911e;
  --primary-dark: #8a5a17;
  --accent: #f6c65b;
  --shadow: 0 20px 60px rgba(80, 52, 12, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family:
    Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(217, 145, 30, 0.4);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(234, 223, 206, 0.82);
  background: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #3a2609;
  font-weight: 900;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px 22px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 650;
}

.nav-links a {
  transition:
    color 160ms ease,
    transform 160ms ease;
}

.nav-links a:hover {
  color: var(--primary-dark);
  transform: translateY(-1px);
}

main {
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.72fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(64px, 9vw, 112px) clamp(20px, 5vw, 72px) 72px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
  font-size: 6.6rem;
  line-height: 0.94;
  letter-spacing: 0;
}

.subtitle {
  max-width: 650px;
  margin: 24px 0 0;
  color: #3f3020;
  font-size: 2.15rem;
  font-weight: 760;
  line-height: 1.25;
}

.hero-description {
  max-width: 640px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 20px;
  border-radius: 8px;
  background: var(--text);
  color: #ffffff;
  font-weight: 780;
  box-shadow: 0 12px 28px rgba(36, 28, 20, 0.18);
  transition:
    background 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.primary-button:hover {
  background: #3a2a1d;
  box-shadow: 0 16px 32px rgba(36, 28, 20, 0.22);
  transform: translateY(-1px);
}

.secondary-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  color: var(--primary-dark);
  font-weight: 760;
}

.app-panel {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: min(100%, 360px);
  padding: 14px;
  border: 1px solid rgba(115, 79, 28, 0.16);
  border-radius: 34px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(255, 246, 226, 0.94)),
    var(--surface);
  box-shadow: var(--shadow);
}

.phone-top {
  width: 88px;
  height: 8px;
  margin: 6px auto 18px;
  border-radius: 999px;
  background: rgba(36, 28, 20, 0.12);
}

.screen-card {
  min-height: 430px;
  padding: 28px;
  border-radius: 24px;
  background:
    radial-gradient(circle at 82% 0%, rgba(246, 198, 91, 0.45), transparent 36%),
    #fffaf0;
  border: 1px solid rgba(234, 223, 206, 0.9);
}

.status-pill {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  background: #ffffff;
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 780;
  box-shadow: 0 8px 24px rgba(80, 52, 12, 0.08);
}

.screen-card h2 {
  margin: 86px 0 12px;
  font-size: 3rem;
  line-height: 1;
}

.screen-card p {
  margin: 0 0 28px;
  color: var(--muted);
}

.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid rgba(115, 79, 28, 0.12);
  color: var(--muted);
}

.metric-row strong {
  color: var(--text);
}

.section {
  padding: 72px clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading h2 {
  margin: 0;
  font-size: 3.1rem;
  line-height: 1.08;
  letter-spacing: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 12px 36px rgba(80, 52, 12, 0.06);
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--primary);
  font-size: 0.84rem;
  font-weight: 900;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.support-section {
  background: #ffffff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.support-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--border);
}

.support-list a {
  display: flex;
  min-height: 132px;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
  background: #fffdf8;
  transition:
    background 160ms ease,
    color 160ms ease;
}

.support-list a:hover {
  background: var(--surface-warm);
  color: var(--primary-dark);
}

.support-list span {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.support-list strong {
  font-size: 1rem;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 26px clamp(20px, 5vw, 72px);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  h1 {
    font-size: 4.8rem;
  }

  .subtitle {
    font-size: 1.85rem;
  }

  .app-panel {
    justify-content: flex-start;
  }

  .feature-grid,
  .support-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding-block: 16px;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 8px 16px;
    font-size: 0.9rem;
  }

  .hero {
    padding-top: 48px;
  }

  h1 {
    font-size: 3rem;
    line-height: 1;
  }

  .subtitle {
    font-size: 1.45rem;
  }

  .screen-card h2 {
    font-size: 2.35rem;
  }

  .section-heading h2 {
    font-size: 2.25rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-button,
  .secondary-link {
    width: 100%;
    justify-content: center;
  }

  .phone-frame {
    width: 100%;
  }

  .screen-card {
    min-height: 360px;
    padding: 24px;
  }

  .screen-card h2 {
    margin-top: 64px;
  }

  .feature-grid,
  .support-list {
    grid-template-columns: 1fr;
  }

  .section {
    padding-block: 56px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 360px) {
  h1 {
    font-size: 2.72rem;
  }

  .subtitle {
    font-size: 1.32rem;
  }

  .screen-card h2 {
    font-size: 2.05rem;
  }
}