:root {
  --bg: #f4efe4;
  --ink: #1d1913;
  --muted: #6d6458;
  --paper: #fffdf7;
  --line: #d9d0c0;
  --accent: #8f3a14;
  --accent-ink: #fff7f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 0 0, #fff6e4 0, transparent 32%),
    var(--bg);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.wrap {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar,
.card,
.notice {
  background: var(--paper);
  border: 1px solid var(--line);
}

.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

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

.mark {
  width: 12px;
  height: 36px;
  background: var(--accent);
}

.brand strong,
h1,
h2 {
  margin: 0;
}

.brand p,
.lead,
.meta,
.notice,
footer {
  color: var(--muted);
}

.hero {
  padding: 40px 0 12px;
}

.lead {
  max-width: 38em;
  line-height: 1.7;
}

.card {
  display: grid;
  gap: 10px;
  margin: 18px 0;
  padding: 20px;
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.name {
  font-size: 1.15rem;
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
}

.btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

.notice,
footer {
  padding: 16px 0 28px;
  line-height: 1.7;
}

@media (max-width: 640px) {
  .row {
    flex-direction: column;
    align-items: flex-start;
  }
}