:root {
  --ink: #131210;
  --surf-1: #1a1815;
  --surf-2: #211e1a;
  --bone: #e5e0d2;
  --ivory: #efe9d9;
  --stone: #9c968a;
  --ash: #6c665c;
  --champagne: #c9a961;
  --burnished: #8a7340;
  --gold-line: rgba(201, 169, 97, 0.32);
  --gold-line-soft: rgba(201, 169, 97, 0.14);
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', 'STSong', 'SimSun', serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--champagne);
  text-decoration: none;
  transition: opacity 0.2s ease;
}
a:hover { opacity: 0.7; }

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(28px, 6vw, 56px) clamp(24px, 6vw, 48px);
}

/* ===== 通用品牌印记（首页 + 法律页共用） ===== */

.brand-mark {
  padding-top: clamp(32px, 8vh, 80px);
  padding-bottom: 4px;
}

.brand {
  font-family: 'Cormorant Garamond', 'EB Garamond', 'Times New Roman', serif;
  font-size: clamp(26px, 5.6vw, 36px);
  letter-spacing: 0.32em;
  color: var(--bone);
  margin: 0;
  font-weight: 400;
}

.brand-cn {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--burnished);
}

/* ===== 首页 hero 区 ===== */

header.hero {
  padding-top: clamp(40px, 12vh, 120px);
  padding-bottom: 8px;
}

header.hero .brand {
  font-size: clamp(28px, 6vw, 40px);
}

.tagline {
  margin-top: clamp(40px, 8vw, 72px);
  font-size: clamp(18px, 3.6vw, 22px);
  color: var(--bone);
  line-height: 1.6;
  letter-spacing: 0.06em;
}

.tagline-sub {
  margin-top: 18px;
  font-size: 14px;
  color: var(--stone);
  line-height: 1.9;
  letter-spacing: 0.06em;
  max-width: 28em;
}

.download {
  margin-top: clamp(48px, 10vw, 96px);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.download-card {
  flex: 1 1 200px;
  background: var(--surf-1);
  border: 0.5px solid var(--burnished);
  border-radius: 14px;
  padding: 20px 22px;
}

.download-platform {
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--burnished);
  text-transform: uppercase;
}

.download-state {
  margin-top: 8px;
  font-size: 15px;
  color: var(--champagne);
  letter-spacing: 0.12em;
}

.legal {
  margin-top: clamp(56px, 12vw, 96px);
  font-size: 13px;
  color: var(--stone);
  letter-spacing: 0.1em;
}

.legal a + a { margin-left: 14px; }

/* ===== 法律页：editorial 文档样式 ===== */

.doc-back {
  display: inline-block;
  margin-top: clamp(24px, 6vw, 40px);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--burnished);
  text-transform: uppercase;
}
.doc-back:hover { color: var(--champagne); opacity: 1; }

.doc-mast {
  margin-top: clamp(56px, 10vw, 96px);
  padding-bottom: clamp(28px, 5vw, 40px);
  border-bottom: 0.5px solid var(--gold-line);
  position: relative;
}

.doc-eyebrow {
  font-family: 'Cormorant Garamond', 'EB Garamond', serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--burnished);
  margin-bottom: 18px;
  text-transform: lowercase;
}

.doc-title {
  font-family: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', serif;
  font-size: clamp(26px, 5.4vw, 38px);
  font-weight: 500;
  color: var(--ivory);
  margin: 0;
  letter-spacing: 0.14em;
  line-height: 1.4;
}

.doc-meta {
  margin-top: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 11px;
  color: var(--stone);
  letter-spacing: 0.22em;
}

.doc-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--burnished);
}

.doc-lede {
  margin-top: clamp(36px, 6vw, 52px);
  font-size: 15px;
  color: var(--bone);
  line-height: 1.95;
  letter-spacing: 0.06em;
  max-width: 32em;
}

.doc-lede::first-letter {
  font-family: 'Cormorant Garamond', 'EB Garamond', serif;
  font-size: 2.4em;
  line-height: 1;
  float: left;
  margin-right: 10px;
  margin-top: 4px;
  color: var(--champagne);
}

/* 章节 */

.section {
  margin-top: clamp(56px, 8vw, 80px);
}

.section-num {
  font-family: 'Cormorant Garamond', 'EB Garamond', serif;
  font-style: italic;
  font-size: clamp(36px, 7vw, 52px);
  font-weight: 400;
  color: var(--champagne);
  letter-spacing: 0;
  line-height: 1;
  display: block;
  margin-bottom: 4px;
  opacity: 0.9;
}

.section-num .num-rule {
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--gold-line);
  vertical-align: middle;
  margin-left: 14px;
  margin-right: 4px;
  transform: translateY(-6px);
}

.section h2 {
  font-family: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', serif;
  font-size: clamp(18px, 3.4vw, 22px);
  font-weight: 500;
  color: var(--ivory);
  letter-spacing: 0.16em;
  margin: 8px 0 22px;
  line-height: 1.5;
}

.section p,
.section li {
  font-size: 14.5px;
  color: var(--stone);
  line-height: 2.05;
  letter-spacing: 0.05em;
}

.section p {
  margin: 12px 0;
  max-width: 32em;
}

.section ul {
  margin: 14px 0;
  padding: 0;
  list-style: none;
  max-width: 32em;
}

.section li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}

.section li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 10px;
  height: 1px;
  background: var(--champagne);
}

.section a {
  color: var(--champagne);
  border-bottom: 0.5px solid var(--gold-line);
  padding-bottom: 1px;
}

/* 重点章节卡片化（surf-1 表面 + 金细线） */

.section-card {
  margin-top: clamp(56px, 8vw, 80px);
  padding: clamp(28px, 5vw, 40px) clamp(24px, 5vw, 36px);
  background: var(--surf-1);
  border: 0.5px solid var(--gold-line);
  border-radius: 18px;
  position: relative;
}

.section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12px;
  right: 12px;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--gold-line-soft),
    var(--gold-line),
    var(--gold-line-soft),
    transparent
  );
}

.section-card .section-num { color: var(--champagne); }
.section-card h2 { color: var(--ivory); }

/* footnote */

.doc-footnote {
  margin-top: clamp(64px, 10vw, 96px);
  padding-top: 24px;
  border-top: 0.5px solid var(--gold-line-soft);
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 11px;
  color: var(--burnished);
  letter-spacing: 0.22em;
  text-align: center;
}

/* ===== 通用 footer ===== */

footer.site-footer {
  margin-top: auto;
  padding-top: clamp(56px, 12vw, 96px);
  padding-bottom: 12px;
  border-top: 0.5px solid var(--ash);
  font-size: 12px;
  color: var(--stone);
  letter-spacing: 0.06em;
  line-height: 2;
}

footer.site-footer .copyright {
  font-family: 'Cormorant Garamond', 'EB Garamond', 'Times New Roman', serif;
  letter-spacing: 0.18em;
}

footer.site-footer .beian a {
  color: var(--stone);
}
footer.site-footer .beian a:hover { color: var(--champagne); opacity: 1; }