:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --link: #0f766e;
  --linkHover: #115e59;
  --card: #fafafa;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.55;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--linkHover); text-decoration: underline; }

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.header {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0 12px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
  min-width: 0;
}

.brand img {
  display: block;
  height: 44px;
  width: auto;
  object-fit: contain;
}

.brandText {
  min-width: 0;
}

.brandText h1 {
  font-size: 18px;
  margin: 0;
}

.brandText p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.main {
  padding-top: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  margin: 14px 0;
}

h2 {
  margin: 0 0 10px;
  font-size: 20px;
}

h3 {
  margin: 18px 0 8px;
  font-size: 16px;
}

p { margin: 10px 0; }

ul {
  margin: 10px 0;
  padding-left: 22px;
}

.kv {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 8px 12px;
  padding: 10px 0 0;
}

.kv a {
  word-break: break-word;
}

.kv div {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.kv .k { color: var(--muted); }

.footer {
  margin-top: 28px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.small { font-size: 13px; color: var(--muted); }

.notice {
  border-left: 4px solid var(--link);
  padding: 10px 12px;
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid var(--border);
}

@media (max-width: 640px) {
  .header { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .kv { grid-template-columns: 1fr; }
  .brand img { height: 40px; }
}