:root {
  --ink: #2C2C2A;
  --ink-2: #5F5E5A;
  --ink-3: #6E6C67;
  --line: #E8E5DE;
  --line-2: #F0EEE8;
  --bg: #FFFFFF;
  --bg-2: #FAF9F6;
  --brand: #B45309;
  --brand-soft: #FAEEDA;
  --brand-line: #E3CFA6;
  --brand-ink: #A34B08;
}

* { box-sizing: border-box; }

html { scroll-padding-top: 78px; }

[id] { scroll-margin-top: 78px; }

body {
  margin: 0;
  background: var(--bg-2);
  color: var(--ink);
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }

.site-header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
}

.site-header .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.5px;
}
.logo:hover { text-decoration: none; }
.logo em { font-style: normal; color: var(--brand); }

.nav { display: flex; gap: 20px; }
.nav a {
  font-size: 14px;
  color: var(--ink-2);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.nav a:hover { text-decoration: none; color: var(--ink); }
.nav a.active { color: var(--brand); border-bottom-color: var(--brand); }

.hero { padding: 60px 0 40px; }
.hero h1 {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.45;
  margin: 0 0 14px;
  letter-spacing: 0.5px;
}
.hero p {
  font-size: 16px;
  color: var(--ink-2);
  margin: 0;
  max-width: 660px;
}

.section-title {
  font-size: 19px;
  font-weight: 500;
  margin: 52px 0 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.section-title small {
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-3);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  color: inherit;
  transition: border-color 0.15s ease;
}
.card:hover { text-decoration: none; border-color: var(--brand-line); }
.card h3 { font-size: 16px; font-weight: 500; margin: 0 0 8px; }
.card p { font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.7; }
.card .meta { font-size: 13px; color: var(--ink-3); margin-top: 14px; }

.card.disabled {
  background: var(--bg-2);
  border-style: dashed;
  cursor: default;
}
.card.disabled:hover { border-color: var(--line); }
.card.disabled h3 { color: var(--ink-2); }

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 1px 9px;
  border-radius: 10px;
  background: var(--brand-soft);
  color: var(--brand-ink);
  margin-right: 6px;
}
.tag.plain { background: var(--line-2); color: var(--ink-3); }

.panel {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 28px;
  margin-bottom: 18px;
}
.panel h2 { font-size: 17px; font-weight: 500; margin: 0 0 12px; }
.panel h3 { font-size: 15px; font-weight: 500; margin: 22px 0 10px; }
.panel h3:first-child { margin-top: 0; }
.panel p { margin: 0 0 12px; font-size: 15px; }
.panel p:last-child { margin-bottom: 0; }
.panel ul { margin: 0 0 12px; padding-left: 20px; }
.panel li { font-size: 15px; margin-bottom: 6px; }

.stage {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 28px;
  margin-bottom: 18px;
}
.stage h3 {
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 6px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.stage .num {
  font-size: 13px;
  color: var(--brand-ink);
  background: var(--brand-soft);
  border-radius: 6px;
  padding: 2px 9px;
  flex: none;
}
.stage .lead { font-size: 14px; color: var(--ink-2); margin: 0 0 14px; }
.stage ul { margin: 0 0 14px; padding-left: 20px; }
.stage li { font-size: 15px; margin-bottom: 7px; }
.stage .more { font-size: 14px; }

.prompt-box {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 14px 0;
  font-size: 15px;
  line-height: 1.85;
  white-space: pre-wrap;
  color: #33322F;
}

.copy-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 14px 0 6px;
  gap: 12px;
}
.copy-bar span { font-size: 13px; color: var(--ink-3); }

.copy-feedback {
  margin: 0 0 14px;
  min-height: 1.4em;
  font-size: 13px;
  text-align: right;
  color: var(--brand-ink);
}
.copy-btn {
  font-family: inherit;
  font-size: 13px;
  color: var(--brand-ink);
  background: var(--brand-soft);
  border: 1px solid var(--brand-line);
  border-radius: 8px;
  padding: 6px 16px;
  cursor: pointer;
  flex-shrink: 0;
  white-space: nowrap;
}
.copy-btn:hover { background: #F6E2C4; }

.breadcrumb {
  font-size: 13px;
  color: var(--ink-3);
  margin: 28px 0 18px;
}
.breadcrumb a { color: var(--ink-3); }
.breadcrumb a:hover { color: var(--brand); }

.muted { color: var(--ink-3); font-size: 14px; }

.site-footer {
  margin-top: 80px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
}
.site-footer .inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}
.site-footer .row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.site-footer .row:last-child { margin-bottom: 0; }
.site-footer .record { font-size: 12px; color: var(--ink-3); }
.site-footer a { color: var(--ink-3); font-size: 12px; }
.site-footer a:hover { color: var(--brand); text-decoration: none; }

@media (max-width: 720px) {
  .hero { padding: 40px 0 28px; }
  .hero h1 { font-size: 24px; }
  .nav { gap: 12px; }
  .nav a { font-size: 13px; }
  .site-header .inner { height: 54px; }
  .panel, .stage { padding: 20px; }
  .section-title { margin: 40px 0 16px; }
}