:root {
  --ink: #263238;
  --muted: #607d8b;
  --melon: #ff6f61;
  --line: #26323822;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  background: linear-gradient(120deg, #fff7f0 0%, #eaf9ff 42%, #f8ffe8 100%);
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 64px;
}

h1, h2, p { margin: 0; }

h1 {
  max-width: 820px;
  font-size: clamp(2rem, 5vw, 4.25rem);
  line-height: 1.04;
}

h2 {
  font-size: 2rem;
  margin-top: 6px;
}

p {
  color: var(--muted);
  line-height: 1.7;
}

button, input {
  min-height: 42px;
  border-radius: 8px;
  font: inherit;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: #ffffffcc;
  padding: 10px 12px;
  color: var(--ink);
}

button {
  border: 0;
  padding: 10px 16px;
  background: var(--ink);
  color: white;
  cursor: pointer;
  box-shadow: 0 8px 0 #00000022;
}

button:hover { transform: translateY(-1px); }

.ghost {
  background: #ffffffcc;
  color: var(--ink);
  border: 1px solid var(--line);
}

.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
  padding: 44px 0 34px;
}

.hero p {
  max-width: 760px;
  margin-top: 14px;
}

.eyebrow {
  color: var(--melon);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.clay-card, .login-card, .panel {
  border: 1px solid #ffffffaa;
  border-radius: 8px;
  background: #ffffffa8;
  box-shadow: 12px 12px 0 #26323818, inset 0 1px 0 #ffffff;
}

.clay-card { padding: 18px; }
.stats .clay-card:nth-child(1) { background: #ffdfd9; }
.stats .clay-card:nth-child(2) { background: #d9f7ec; }
.stats .clay-card:nth-child(3) { background: #fff1b8; }
.stats span { color: var(--muted); }
.stats strong {
  display: block;
  margin-top: 10px;
  font-size: 2rem;
}

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

.create-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.inline-form {
  display: grid;
  grid-template-columns: 1fr 1fr auto auto;
  gap: 8px;
  align-items: center;
  margin-top: 12px;
}

.inline-form.danger { grid-template-columns: 1fr; }
.inline-form.danger button { background: #e53935; }

.row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.between { justify-content: space-between; }

.mono {
  margin-top: 10px;
  color: var(--ink);
  font-family: "Cascadia Mono", Consolas, monospace;
  overflow-wrap: anywhere;
}

.copyable {
  padding: 10px;
  border-radius: 8px;
  background: #fffbe7;
}

.muted {
  margin-top: 12px;
  color: var(--muted);
}

.error {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #ffe2e2;
  color: #b71c1c;
}

.login-card {
  width: min(540px, 100%);
  margin: 12vh auto 0;
  padding: 34px;
  background: #fffdf6cc;
}

.stack {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

table {
  width: 100%;
  margin-top: 18px;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 8px;
  background: #ffffffcc;
}

th, td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th { background: #d9f7ec; }

a {
  color: #0b72d0;
  font-weight: 700;
}

@media (max-width: 820px) {
  main { width: min(100% - 20px, 1180px); }
  .hero, .grid, .create-form, .inline-form { grid-template-columns: 1fr; }
  .panel, .login-card { padding: 18px; }
  table {
    display: block;
    overflow-x: auto;
  }
}