:root {
  --canvas: #0f141a;
  --surface: #181c23;
  --surface-high: #262a31;
  --well: #0a0e15;
  --gold: #d4af37;
  --gold-soft: #e9c349;
  --wine: #722f37;
  --wine-light: #ffb2b8;
  --ink: #f5efeb;
  --soft: #a6acb8;
  --muted: #6f7684;
  --hairline: rgba(255, 255, 255, 0.10);
  --hairline-strong: rgba(255, 255, 255, 0.20);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Segoe UI, Roboto, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0 0 56px;
  background-color: var(--canvas);
  background-image:
    radial-gradient(1100px 520px at 12% -6%, rgba(114, 47, 55, 0.34), transparent 62%),
    radial-gradient(880px 460px at 100% 4%, rgba(212, 175, 55, 0.11), transparent 60%);
  background-repeat: no-repeat;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 34px 22px 0;
}

/* 眉标 + 品牌 + 互跳 */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.kicker {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

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

.brand {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.1;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}

.switch:hover { border-color: rgba(212, 175, 55, 0.55); }

.rule {
  height: 1px;
  margin: 22px 0 0;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.55), rgba(212, 175, 55, 0.06) 72%, transparent);
}

/* 标题区 */
.lede { padding: 26px 0 4px; }

.eyebrow {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 8px 0 10px;
  font-family: var(--serif);
  font-size: 38px;
  line-height: 1.14;
  font-weight: 600;
  color: var(--ink);
}

.meta {
  margin: 0;
  font-size: 13px;
  color: var(--soft);
}

.summary {
  margin: 20px 0 0;
  padding: 15px 17px;
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--gold);
  border-radius: 6px;
  background: var(--surface);
  font-size: 14.5px;
  color: var(--soft);
}

/* 条款卡片 */
.clauses {
  margin: 26px 0 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.clause {
  padding: 17px 18px;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: var(--surface);
}

.clause h2 {
  margin: 0 0 9px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
}

.clause .num {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
  vertical-align: 2px;
}

.clause p { margin: 0 0 10px; font-size: 14.5px; color: var(--soft); }
.clause p:last-child { margin-bottom: 0; }

.clause ul { margin: 0 0 10px; padding-left: 20px; }
.clause ul:last-child { margin-bottom: 0; }
.clause li { margin-bottom: 6px; font-size: 14.5px; color: var(--soft); }
.clause li:last-child { margin-bottom: 0; }

strong { color: var(--ink); font-weight: 600; }
em { color: var(--gold-soft); font-style: normal; }

code {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 2px 6px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--well);
  color: var(--ink);
}

/* 页脚 */
.foot {
  margin: 30px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}

.foot a { color: var(--soft); text-decoration: none; border-bottom: 1px solid var(--hairline-strong); }

@media (max-width: 420px) {
  h1 { font-size: 31px; }
  .brand { font-size: 26px; }
  .wrap { padding: 26px 17px 0; }
}