:root {
  --bg: #f4f1ea;
  --paper: rgba(255, 252, 246, 0.92);
  --ink: #1f1a15;
  --muted: #6b6258;
  --line: rgba(31, 26, 21, 0.1);
  --accent: #c46a1f;
  --accent-soft: rgba(196, 106, 31, 0.12);
  --shadow: 0 18px 48px rgba(49, 35, 21, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(196, 106, 31, 0.18), transparent 30%),
    linear-gradient(180deg, #fbf8f2 0%, var(--bg) 100%);
}

body {
  margin: 0;
  font-family: "PingFang SC", "SF Pro SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  color: var(--ink);
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page {
  width: min(860px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.hero {
  padding: 28px 28px 24px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin: 18px 0 10px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 16px;
}

.meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  margin-top: 20px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.section h2 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.2;
}

.section h3 {
  margin: 22px 0 10px;
  font-size: 18px;
  line-height: 1.3;
}

.section p {
  margin: 0 0 12px;
}

.section p:last-child {
  margin-bottom: 0;
}

.section ul {
  margin: 0;
  padding-left: 20px;
}

.section li + li {
  margin-top: 8px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.card h3 {
  margin-top: 0;
}

.footer {
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.mono {
  font-family: "SF Mono", "Menlo", "Monaco", monospace;
  word-break: break-all;
}

@media (max-width: 720px) {
  .page {
    width: min(100vw - 24px, 860px);
    padding: 24px 0 40px;
  }

  .hero,
  .section {
    padding: 20px;
    border-radius: 22px;
  }

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