:root {
  color-scheme: light;
  --vault: #102019;
  --vault-2: #19342a;
  --paper: #f7f0e4;
  --paper-2: #fffaf0;
  --ink: #17251f;
  --muted: #667066;
  --line: #d8c9ad;
  --brass: #bd914c;
  --brass-2: #e1c28a;
  --teal: #0f6a58;
  --shadow: 0 20px 54px rgba(38, 28, 17, .14);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 0%, rgba(189, 145, 76, .18), transparent 26rem),
    radial-gradient(circle at 90% 12%, rgba(15, 106, 88, .10), transparent 24rem),
    linear-gradient(180deg, #fbf4e8 0%, var(--paper) 42%, #efe4d0 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.68;
}

a {
  color: inherit;
}

.site {
  width: min(1040px, calc(100% - 36px));
  margin: 0 auto;
  padding: 18px 0 72px;
}

.nav {
  position: sticky;
  top: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 12px;
  border: 1px solid rgba(216, 201, 173, .84);
  border-radius: 22px;
  background: rgba(255, 250, 240, .82);
  box-shadow: 0 12px 34px rgba(38, 28, 17, .10);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-weight: 950;
}

.brand-icon,
.hero-icon {
  display: block;
  object-fit: cover;
  box-shadow: 0 12px 28px rgba(16, 32, 25, .18);
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 8px 12px;
  border: 1px solid rgba(16, 32, 25, .10);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, .48);
  text-decoration: none;
  font-size: 13px;
  font-weight: 850;
}

.app-hero,
.page-hero {
  margin: 22px 0 18px;
  border: 1px solid rgba(189, 145, 76, .52);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .08), transparent 42%),
    linear-gradient(135deg, var(--vault) 0%, var(--vault-2) 100%);
  color: var(--paper-2);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.app-hero {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 26px;
  align-items: center;
  padding: clamp(26px, 5vw, 48px);
}

.page-hero {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: clamp(22px, 4vw, 34px);
}

.hero-icon {
  justify-self: end;
  width: min(180px, 34vw);
  height: min(180px, 34vw);
  border-radius: 38px;
}

.eyebrow {
  color: var(--brass-2);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 10px 0 16px;
}

h2 {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  margin: 0 0 12px;
}

h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

p,
li {
  font-size: 16px;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: rgba(255, 250, 240, .88);
  font-size: clamp(17px, 2vw, 21px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 16px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 950;
}

.button.primary {
  background: var(--brass);
  color: var(--vault);
}

.button.secondary {
  border: 1px solid rgba(255, 250, 240, .32);
  color: var(--paper-2);
}

.panel {
  margin-top: 18px;
  background: rgba(255, 250, 240, .96);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(22px, 4vw, 36px);
  box-shadow: var(--shadow);
}

.panel + .panel {
  margin-top: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 18px 0;
}

.card {
  background: rgba(255, 255, 255, .62);
  border: 1px solid rgba(216, 201, 173, .86);
  border-radius: 18px;
  padding: 22px;
}

.certificate-preview {
  margin: 26px 0 0;
  padding: 8px;
  border-radius: 18px;
  background: rgba(255, 250, 240, .82);
  box-shadow: var(--shadow);
  border: 1px solid rgba(216, 201, 173, .72);
}

.certificate-preview img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.meta-list {
  padding-left: 20px;
}

.footer {
  margin-top: 32px;
  color: var(--muted);
  font-size: 13px;
}

.footer a {
  color: var(--teal);
  font-weight: 900;
}

.note {
  padding: 14px 16px;
  border-left: 4px solid var(--brass);
  background: rgba(189, 145, 76, .12);
  border-radius: 12px;
}

@media (max-width: 760px) {
  .site {
    width: min(100% - 28px, 1040px);
    padding-top: 14px;
  }

  .nav {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .app-hero {
    grid-template-columns: 1fr;
  }

  .hero-icon {
    justify-self: start;
    order: -1;
    width: 86px;
    height: 86px;
    border-radius: 22px;
  }

  .page-hero {
    align-items: flex-start;
  }

  .page-hero .hero-icon {
    flex: 0 0 58px;
    width: 58px;
    height: 58px;
    border-radius: 16px;
  }

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