/* =========================================================
   金花游戏 · 共享站点样式 /assets/site.css
   暖灯情报站：纸米色 + 深墨绿 + 暖金 + 橙红提醒 + 冷灰蓝资料区
   ========================================================= */

/* 1. 变量与令牌 */
:root {
  --paper-cream: #FBF6EA;
  --paper-deep: #F3EBD9;
  --ink-green-900: #0C2A23;
  --ink-green-700: #16463A;
  --warm-gold-600: #C8922E;
  --warm-gold-300: #F2D18B;
  --ember-orange: #E4572E;
  --cool-slate-050: #EEF3F7;
  --cool-slate-600: #5E6E7E;
  --electric-teal: #2FB9A8;
  --violet: #7B6DD6;

  --surface: var(--paper-cream);
  --surface-raised: #FFFCF3;
  --ink: var(--ink-green-900);
  --ink-soft: var(--ink-green-700);
  --muted: var(--cool-slate-600);
  --line: rgba(12, 42, 35, .14);
  --line-strong: rgba(12, 42, 35, .32);

  --font-display: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 1280px;
  --gutter: clamp(18px, 4vw, 48px);
  --radius-s: 2px;
  --radius-m: 4px;
  --radius-l: 6px;

  --shadow-1: 0 1px 0 rgba(12, 42, 35, .03), 0 10px 26px -22px rgba(12, 42, 35, .5);
  --shadow-2: 0 2px 0 rgba(12, 42, 35, .04), 0 18px 36px -26px rgba(12, 42, 35, .6);
  --dur: 180ms;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* 2. Reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
button { color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--warm-gold-300); color: var(--ink-green-900); }

/* 3. 中文排版与基础 */
body {
  background-color: var(--paper-cream);
  background-image: radial-gradient(rgba(12, 42, 35, .04) 1px, transparent 1.2px);
  background-size: 6px 6px;
  color: var(--ink-green-900);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--ink-green-900);
  text-wrap: balance;
}
h1 { font-size: clamp(34px, 5.4vw, 64px); }
h2 { font-size: clamp(28px, 3.8vw, 44px); }
h3 { font-size: clamp(21px, 2.4vw, 28px); line-height: 1.32; }
h4 { font-size: 18px; font-weight: 500; font-family: var(--font-body); line-height: 1.5; }

p { text-wrap: pretty; }

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--warm-gold-600);
  outline-offset: 3px;
  border-radius: var(--radius-s);
}
.utility-strip :focus-visible { outline-color: var(--warm-gold-300); }
.copy-btn:focus-visible, .to-top:focus-visible { outline-offset: 2px; }

#main-content { display: block; }
#main-content:focus { outline: none; }
#main-content:focus-visible { outline: 2px solid var(--warm-gold-600); outline-offset: -2px; }

/* 4. 通用排版与工具类 */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: 860px; }

.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--cool-slate-600);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--warm-gold-600);
}

.display {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1.02;
  letter-spacing: -.03em;
}

.num {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}

.stack > * + * { margin-top: var(--stack-gap, 1rem); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

.prose { max-width: 70ch; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.8em; }
.prose ul li {
  position: relative;
  padding-left: 1.1em;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .86em;
  width: 7px;
  height: 1px;
  background: var(--warm-gold-600);
}
.prose a {
  color: var(--ink-green-900);
  border-bottom: 1px solid var(--warm-gold-600);
  transition: background-color var(--dur) var(--ease);
}
.prose a:hover { background: rgba(242, 209, 139, .35); }
.prose blockquote {
  border-left: 3px solid var(--warm-gold-300);
  padding-left: 16px;
  color: var(--ink-green-700);
}

.section { padding-block: clamp(36px, 5.5vw, 72px); }
.section--tight { padding-block: clamp(22px, 3vw, 36px); }

/* 5. 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: .08em;
  text-align: center;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn--solid {
  background: var(--ink-green-900);
  border-color: var(--ink-green-900);
  color: var(--paper-cream);
}
.btn--solid:hover {
  background: var(--ink-green-700);
  border-color: var(--warm-gold-600);
  color: #FFFFFF;
}
.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-green-900);
}
.btn--ghost:hover {
  border-color: var(--warm-gold-600);
  background: rgba(242, 209, 139, .22);
}
.btn--quiet {
  background: transparent;
  border-color: transparent;
  color: var(--ink-green-700);
  padding-inline: 6px;
}
.btn--quiet:hover { color: var(--ink-green-900); border-bottom-color: var(--warm-gold-600); }
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn[aria-disabled="true"] {
  background: var(--cool-slate-050);
  border-color: var(--line);
  color: var(--cool-slate-600);
  cursor: not-allowed;
}

/* 6. 跳转链接与头部 */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--ink-green-900);
  color: var(--paper-cream);
  font-size: 14px;
  letter-spacing: .06em;
  border-radius: var(--radius-s);
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus-visible {
  transform: translateY(0);
  outline-color: var(--warm-gold-300);
}

.site-header {
  position: relative;
  z-index: 50;
  background: var(--paper-cream);
  border-bottom: 1px solid var(--line);
}

/* 阅读进度 */
.progress-rail {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 130;
  background: rgba(12, 42, 35, .1);
  pointer-events: none;
}
.progress-rail__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--warm-gold-600), var(--ember-orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 90ms linear;
}

/* 顶部窄条 */
.utility-strip {
  background: var(--ink-green-900);
  color: rgba(255, 255, 255, .86);
  border-bottom: 1px solid rgba(200, 146, 46, .4);
}
.utility-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 34px;
  padding-block: 6px;
}
.utility-strip__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: rgba(255, 255, 255, .82);
}
.utility-strip__list li { display: inline-flex; align-items: center; }
.utility-strip__list li + li { margin-left: 12px; }
.utility-strip__list li + li::before {
  content: "";
  width: 3px;
  height: 3px;
  margin-right: 12px;
  border-radius: 50%;
  background: var(--warm-gold-600);
}
.utility-strip__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--warm-gold-300);
  white-space: nowrap;
}

/* 刊头 */
.masthead { padding-bottom: clamp(10px, 1.6vw, 16px); }
.masthead__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding-block: clamp(18px, 2.6vw, 30px) clamp(12px, 2vw, 18px);
}
.masthead__kicker {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 12px;
  border-left: 1px solid var(--warm-gold-600);
}
.masthead__kicker-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ink-green-700);
}
.masthead__kicker-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--cool-slate-600);
}
.masthead__brand { text-align: center; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--ink-green-900);
  color: var(--warm-gold-300);
  border-radius: 3px;
  box-shadow: inset 0 0 0 1px rgba(242, 209, 139, .55);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1;
}
.brand__text {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.05;
  letter-spacing: .14em;
  color: var(--ink-green-900);
}
.masthead__strap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cool-slate-600);
}
.masthead__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}
.masthead__actions .btn { padding: 10px 14px; font-size: 13px; }

.tick-rule {
  display: block;
  height: 8px;
  border-top: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, rgba(200, 146, 46, .6) 0 1px, transparent 1px 12px);
}

/* 栏目带 */
.nav-band {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--paper-cream);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.site-header[data-scrolled="true"] .nav-band {
  border-top-color: var(--warm-gold-600);
  box-shadow: 0 12px 26px -24px rgba(12, 42, 35, .8);
}
.nav-band__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  min-height: 58px;
}

.nav-toggle {
  grid-column: 1;
  justify-self: start;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--warm-gold-600); color: var(--ink-green-900); }
.nav-toggle__bars {
  display: inline-grid;
  gap: 4px;
  width: 18px;
}
.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.primary-nav { grid-column: 2; }
.primary-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
}
.primary-nav__list li + li { border-left: 1px solid var(--line); }
.primary-nav__list a {
  position: relative;
  display: block;
  padding: 16px 18px;
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--ink-green-700);
  transition: color var(--dur) var(--ease);
}
.primary-nav__list a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 11px;
  height: 1px;
  background: var(--warm-gold-600);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--dur) var(--ease);
}
.primary-nav__list a:hover { color: var(--ink-green-900); }
.primary-nav__list a:hover::after { transform: scaleX(1); }
.primary-nav__list a[aria-current="page"] {
  color: var(--ink-green-900);
  font-weight: 500;
}
.primary-nav__list a[aria-current="page"]::after { transform: scaleX(1); height: 2px; }

.primary-nav__extra { display: none; }

.nav-cta {
  grid-column: 3;
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--warm-gold-600);
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-green-900);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-cta::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--warm-gold-600);
}
.nav-cta:hover { background: var(--ink-green-900); color: var(--warm-gold-300); }

/* 7. 页脚 */
.site-footer {
  margin-top: clamp(48px, 7vw, 96px);
  background-color: var(--paper-deep);
  background-image: radial-gradient(rgba(12, 42, 35, .05) 1px, transparent 1.2px);
  background-size: 7px 7px;
  color: var(--ink-green-900);
  border-top: 1px solid var(--line);
}
.footer__band {
  height: 8px;
  background: linear-gradient(90deg, var(--warm-gold-600) 0 32%, var(--ink-green-900) 32% 100%);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr .9fr .9fr 1.4fr;
  gap: clamp(24px, 3.4vw, 48px);
  padding-block: clamp(34px, 4.6vw, 60px);
}
.footer__wordmark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 3.6vw, 44px);
  line-height: 1.1;
  letter-spacing: .12em;
  color: var(--ink-green-900);
}
.footer__tagline {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ink-green-700);
}
.footer__index {
  display: inline-block;
  margin-top: 18px;
  padding: 5px 9px;
  background: rgba(12, 42, 35, .05);
  border-left: 2px solid var(--warm-gold-600);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--cool-slate-600);
}
.footer__note {
  margin-top: 16px;
  max-width: 30ch;
  padding-left: 12px;
  border-left: 2px solid var(--warm-gold-300);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-green-700);
}
.footer__col-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--ink-green-900);
}
.footer__col-title::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--warm-gold-600);
}
.footer__list a {
  display: inline-block;
  padding: 5px 0;
  font-size: 15px;
  color: var(--ink-green-700);
  background-image: linear-gradient(var(--warm-gold-600), var(--warm-gold-600));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size var(--dur) var(--ease), color var(--dur) var(--ease);
}
.footer__list a:hover {
  color: var(--ink-green-900);
  background-size: 100% 1px;
}
.footer__hours {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.9;
  letter-spacing: .06em;
  color: var(--cool-slate-600);
}

.footer__contact-list { border-top: 1px solid var(--line); }
.footer__contact-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}
.footer__contact-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--cool-slate-600);
}
.footer__contact-value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-green-900);
  overflow-wrap: anywhere;
}
.footer__contact-item .copy-btn { grid-column: 3; justify-self: end; }

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-green-700);
  background: transparent;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.copy-btn:hover {
  border-color: var(--warm-gold-600);
  background: rgba(242, 209, 139, .3);
  color: var(--ink-green-900);
}
.copy-btn[data-copied="true"] {
  background: var(--ink-green-900);
  border-color: var(--ink-green-900);
  color: var(--warm-gold-300);
}
.footer__copy-status {
  min-height: 1.5em;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--ink-green-700);
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  padding-block: 16px 28px;
  border-top: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--cool-slate-600);
}
.footer__base-icp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer__base-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__base-links a {
  color: var(--ink-green-700);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.footer__base-links a:hover {
  color: var(--ink-green-900);
  border-bottom-color: var(--warm-gold-600);
}
.to-top {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--ink-green-700);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.to-top:hover {
  border-color: var(--warm-gold-600);
  background: rgba(242, 209, 139, .3);
  color: var(--ink-green-900);
}

/* 8. 网格与页面基础容器 */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
}
.grid--tight { gap: 12px; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-12 { grid-column: span 12; }

/* 9. 章节色带 */
.chapter-band {
  display: flex;
  align-items: flex-end;
  gap: clamp(14px, 3vw, 28px);
  margin-bottom: clamp(20px, 3vw, 34px);
  padding-top: 18px;
  border-top: 10px solid var(--warm-gold-600);
}
.chapter-band--ink { border-top-color: var(--ink-green-900); }
.chapter-band__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 7vw, 84px);
  line-height: .82;
  letter-spacing: -.04em;
  color: var(--ink-green-900);
  font-variant-numeric: tabular-nums;
}

/* 10. 卡片 */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--warm-gold-600);
  box-shadow: var(--shadow-2);
}
.card__kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cool-slate-600);
}
.card__kicker::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--warm-gold-600);
}
.card__title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--ink-green-900);
}
.card__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-green-700);
}
.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--cool-slate-600);
}

/* 11. 日历账本 */
.ledger {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--surface-raised);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.ledger__row {
  position: relative;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 16px;
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}
.ledger__row:first-child { border-top: 0; }
.ledger__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--ember-orange);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform var(--dur) var(--ease);
}
.ledger__row:hover { background: rgba(242, 209, 139, .16); }
.ledger__row:hover::before { transform: scaleY(1); }
.ledger__cell {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-green-700);
  min-width: 0;
}
.ledger__cell--time {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.01em;
  color: var(--ink-green-900);
  font-variant-numeric: tabular-nums;
}

/* 12. 筛选与标签 */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ink-green-700);
  background: transparent;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.chip:hover {
  border-color: var(--warm-gold-600);
  color: var(--ink-green-900);
}
.chip[aria-pressed="true"] {
  background: var(--ink-green-900);
  border-color: var(--ink-green-900);
  color: var(--paper-cream);
}

.stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: var(--radius-s);
  background: var(--ember-orange);
  color: var(--ink-green-900);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid rgba(123, 109, 214, .32);
  border-radius: var(--radius-s);
  background: rgba(123, 109, 214, .14);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink-green-900);
}
.tag--ember {
  background: rgba(228, 87, 46, .12);
  border-color: rgba(228, 87, 46, .42);
}
.tag--teal {
  background: rgba(47, 185, 168, .14);
  border-color: rgba(47, 185, 168, .42);
}
.tag--slate {
  background: var(--cool-slate-050);
  border-color: rgba(94, 110, 126, .32);
  color: var(--cool-slate-600);
}

/* 13. 粘性目录与面包屑 */
.toc {
  position: sticky;
  top: 88px;
  padding-top: 14px;
  border-top: 6px solid var(--warm-gold-600);
}
.toc__link {
  display: block;
  padding: 8px 0 8px 12px;
  border-left: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-green-700);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.toc__link:hover {
  border-left-color: var(--warm-gold-600);
  background: rgba(200, 146, 46, .07);
  color: var(--ink-green-900);
}
.toc__link[aria-current="true"] {
  border-left: 2px solid var(--ember-orange);
  background: rgba(242, 209, 139, .22);
  color: var(--ink-green-900);
  font-weight: 500;
}

.breadcrumbs {
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--cool-slate-600);
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--warm-gold-600);
}
.breadcrumbs a {
  color: var(--ink-green-700);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.breadcrumbs a:hover {
  color: var(--ink-green-900);
  border-bottom-color: var(--warm-gold-600);
}
.breadcrumbs [aria-current="page"] { color: var(--ink-green-900); }

/* 14. 响应式媒体容器 */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background-color: #E9E0CB;
  background-image:
    linear-gradient(rgba(12, 42, 35, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12, 42, 35, .07) 1px, transparent 1px);
  background-size: 26px 26px;
}
.media--wide { aspect-ratio: 16 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 4 / 5; }
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 220ms var(--ease);
}
.media:hover .media__img { transform: scale(1.02); }
.media__badge {
  position: absolute;
  left: 10px;
  top: 10px;
  padding: 4px 7px;
  background: var(--ink-green-900);
  color: var(--warm-gold-300);
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}
.media__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--cool-slate-600);
}

/* 15. 断点：平板 */
@media (max-width: 1100px) {
  .primary-nav__list a { padding: 15px 12px; font-size: 14px; }
  .primary-nav__list a::after { left: 12px; right: 12px; }
  .masthead__actions .btn--ghost { display: none; }
}

@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-3, .col-4 { grid-column: span 3; }
  .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-12 { grid-column: span 6; }
  .toc { position: static; }
  .ledger__row { grid-template-columns: 96px minmax(0, 1fr); }
  .ledger__cell:last-child { grid-column: 1 / -1; }
}

/* 16. 断点：移动与导航 */
@media (max-width: 899px) {
  .masthead__inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding-block: clamp(16px, 4vw, 22px) 12px;
  }
  .masthead__kicker { display: none; }
  .masthead__actions { display: none; }
  .masthead__brand { grid-column: 1; }
  .brand__mark { width: 38px; height: 38px; font-size: 19px; }
  .masthead__strap { font-size: 10.5px; letter-spacing: .12em; }

  .nav-band__inner { grid-template-columns: auto 1fr auto; min-height: 56px; }
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    grid-column: 1 / -1;
    max-height: calc(100dvh - 120px);
    overflow-y: auto;
    padding: 6px var(--gutter) 22px;
    background: var(--paper-cream);
    border-bottom: 1px solid var(--warm-gold-600);
    box-shadow: 0 28px 44px -34px rgba(12, 42, 35, .8);
  }
  .site-header[data-open="true"] .primary-nav { display: block; }
  .site-header[data-open="true"] .nav-toggle {
    background: var(--ink-green-900);
    border-color: var(--ink-green-900);
    color: var(--warm-gold-300);
  }
  .site-header[data-open="true"] .nav-toggle__bars span:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
  }
  .site-header[data-open="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
  .site-header[data-open="true"] .nav-toggle__bars span:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
  }
  .primary-nav__list { flex-direction: column; align-items: stretch; }
  .primary-nav__list li + li { border-left: 0; border-top: 1px solid var(--line); }
  .primary-nav__list a {
    padding: 14px 6px;
    font-size: 17px;
    letter-spacing: .06em;
  }
  .primary-nav__list a::after {
    left: 6px;
    right: auto;
    bottom: 9px;
    width: 26px;
  }
  .primary-nav__list a[aria-current="page"] { background: rgba(242, 209, 139, .22); }
  .primary-nav__extra { display: block; margin-top: 16px; }
  .primary-nav__extra .btn { width: 100%; }
}

/* 17. 断点：手机 */
@media (max-width: 760px) {
  .utility-strip__meta { display: none; }
  .utility-strip__inner { min-height: 30px; }
}

@media (max-width: 620px) {
  .grid { grid-template-columns: 1fr; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-12 {
    grid-column: auto;
  }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__brand { grid-column: auto; }
  .footer__base { flex-direction: column; align-items: flex-start; gap: 12px; }
  .to-top { margin-left: 0; }
  .ledger__row { grid-template-columns: 1fr; gap: 4px; }
  .ledger__cell:last-child { grid-column: auto; }
  .masthead__strap { letter-spacing: .1em; }
  .nav-cta { font-size: 11px; padding: 8px 10px; letter-spacing: .06em; }
}

@media (max-width: 480px) {
  .nav-cta { display: none; }
  .nav-band__inner { grid-template-columns: auto 1fr; }
  .masthead__actions .btn { width: 100%; }
}

/* 18. 降低动效 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-property: color, background-color, border-color, outline-color !important;
    transition-duration: 120ms !important;
  }
  .progress-rail__bar { transition: none; }
  .media:hover .media__img { transform: none; }
  .ledger__row::before { transform: none; }
  .ledger__row:hover::before { transform: none; }
  .primary-nav__list a::after { transition: none; }
}