:root {
  --bg: #f2efe7;
  --ink: #171511;
  --muted: #676155;
  --card: #fffaf0;
  --line: #ded4bf;
  --accent: #d74a24;
  --accent-dark: #9d2f16;
  --green: #1f6a4a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Microsoft YaHei", serif;
  background:
    radial-gradient(circle at top left, rgba(215, 74, 36, 0.18), transparent 32rem),
    linear-gradient(135deg, rgba(31, 106, 74, 0.12), transparent 22rem),
    var(--bg);
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.narrow {
  width: min(820px, calc(100% - 32px));
}

.hero {
  padding: 56px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: rgba(255, 250, 240, 0.86);
  box-shadow: 0 28px 80px rgba(43, 34, 19, 0.12);
}

.compact {
  padding: 40px;
}

.eyebrow {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.12;
}

h1 {
  margin-top: 12px;
  max-width: 780px;
  font-size: clamp(42px, 8vw, 86px);
  letter-spacing: -0.06em;
}

h2 {
  font-size: 24px;
}

.lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.8;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  color: #fff;
  background: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.button.secondary {
  color: var(--ink);
  background: #eadfca;
}

.panel {
  margin-top: 22px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 250, 240, 0.72);
}

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

.grid article {
  padding: 26px;
  border-radius: 20px;
  background: #fffdf8;
}

.step {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

article p,
.prose p,
.panel p,
.checklist {
  color: var(--muted);
  line-height: 1.8;
}

.checklist {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding-left: 20px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  align-items: start;
}

.url-card {
  display: grid;
  gap: 12px;
}

.url-card div,
.params dd {
  padding: 16px;
  border-radius: 16px;
  background: #fffdf8;
}

.url-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

code {
  overflow-wrap: anywhere;
  font-family: "Cascadia Mono", Consolas, monospace;
}

.prose h2 {
  margin-top: 28px;
}

.prose h2:first-child {
  margin-top: 0;
}

.params {
  display: grid;
  gap: 8px;
}

.params dt {
  color: var(--accent-dark);
  font-weight: 800;
}

.params dd {
  margin: 0 0 10px;
  overflow-wrap: anywhere;
  font-family: "Cascadia Mono", Consolas, monospace;
}

.hint {
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: rgba(215, 74, 36, 0.08);
}

a {
  color: var(--accent-dark);
}

@media (max-width: 760px) {
  .shell {
    padding: 28px 0;
  }

  .hero,
  .compact,
  .panel {
    padding: 24px;
    border-radius: 22px;
  }

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