:root {
  --mint: #92c9b1;
  --mint-dark: #3d7a62;
  --mint-soft: #e8f5ef;
  --ink: #1a1f1c;
  --muted: #5f6b66;
  --card: #ffffff;
  --line: #e6ece9;
  --shadow: 0 18px 50px rgba(26, 31, 28, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Pretendard", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(146, 201, 177, 0.28), transparent 32%),
    linear-gradient(180deg, #f8fbf9 0%, #f3f7f5 100%);
  min-height: 100vh;
}

a { color: var(--mint-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--ink);
}

.brand-badge {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--mint), #6fb196);
  color: white;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.nav {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--mint);
  color: white;
  box-shadow: 0 10px 24px rgba(146, 201, 177, 0.35);
}

.btn-secondary {
  background: white;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  padding: 28px 0 48px;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
}

.hero-card, .panel, .feature, .login-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-card { padding: 36px; }

.eyebrow {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--mint-soft);
  color: var(--mint-dark);
  font-size: 0.85rem;
  font-weight: 700;
}

h1 {
  margin: 16px 0 12px;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.08;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
  margin: 0 0 24px;
}

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.stats-grid-single {
  grid-template-columns: 1fr;
  max-width: 220px;
}

.stat {
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff, #f7fbf8);
  border: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 4px;
}

.stat span { color: var(--muted); font-size: 0.92rem; }

.section {
  padding: 18px 0 42px;
}

.section h2 {
  font-size: 1.8rem;
  margin: 0 0 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr; }
}

.feature { padding: 22px; }
.feature h3 { margin: 0 0 8px; }
.feature p { margin: 0; color: var(--muted); line-height: 1.6; }

.panel { padding: 24px; }
.panel h3 { margin-top: 0; }

.address-box {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 14px;
}

.address-pill {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: #f4faf7;
  border: 1px dashed #b9d9c9;
  padding: 10px 14px;
  border-radius: 14px;
  color: var(--mint-dark);
}

.input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  font-size: 1rem;
}

.input:focus {
  outline: 2px solid rgba(146, 201, 177, 0.45);
  border-color: var(--mint);
}

.hint, .error, .success {
  font-size: 0.92rem;
  margin-top: 10px;
}

.hint { color: var(--muted); }
.error { color: #c0392b; }
.success { color: var(--mint-dark); }

.site-footer {
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.92rem;
}

.login-wrap {
  min-height: calc(100vh - 120px);
  display: grid;
  place-items: center;
  padding: 24px 0 48px;
}

.login-card {
  width: min(520px, 100%);
  padding: 32px;
}

.check-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 14px 0;
  color: var(--muted);
  line-height: 1.5;
}

.check-row input { margin-top: 4px; }

.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 0 60px;
  line-height: 1.75;
}

.legal h1 { font-size: 2rem; }
.legal h2 { margin-top: 28px; }

.hidden { display: none !important; }