/* landing — 메인(랜딩) 페이지 전용 */

.landing-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.landing-main {
  flex: 1 0 auto;
  padding: var(--space-10) var(--safe-inline) var(--space-16);
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
}

.landing-hero {
  text-align: center;
  margin-bottom: var(--space-12);
}

.landing-adfit {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin-bottom: var(--space-10);
  padding: 0 var(--space-2);
  box-sizing: border-box;
}

.landing-hero h1 {
  margin: 0 0 var(--space-4);
  font-size: var(--text-3xl);
  font-weight: 850;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

.landing-hero p {
  margin: 0 auto;
  max-width: 48rem;
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  word-break: keep-all;
  text-wrap: balance;
}

.landing-cta-row {
  margin-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.landing-sections {
  display: grid;
  gap: var(--space-10);
}

.landing-section {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
  padding: 20px;
}

.landing-section__title {
  margin: 0 0 var(--space-5);
  font-size: var(--text-sm);
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
  background: color-mix(in oklab, var(--color-surface) 78%, transparent);
  text-decoration: none;
  color: var(--color-text-primary);
  transition:
    transform var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
  background: var(--color-surface-hover);
}

.tool-card__name {
  font-size: var(--text-lg);
  font-weight: 850;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

.tool-card__desc {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

.landing-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--safe-inline);
  border-bottom: 1px solid var(--color-border-subtle);
  background: color-mix(in oklab, var(--color-surface) 84%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.landing-topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

a.landing-topbar__brand {
  text-decoration: none;
  color: inherit;
}

.landing-topbar__logo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-glass);
  flex: 0 0 auto;
}

.landing-topbar__title {
  font-weight: 850;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}