/* ============================================================
   安博赛事 · 共享站点样式 /assets/site.css
   夜赛墨绿长卷 · 玻璃层 + 米纸白内容层 · 等宽索引
   ============================================================ */

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

:root {
  --night: #0B1F1A;
  --alley: #102C24;
  --pitch: #1E5B3A;
  --dusk: #E08A2E;
  --tape: #F2C744;
  --red: #C0392B;
  --yellow: #D9A31E;
  --paper: #F4EFE3;
  --paper-2: #E8E2D2;
  --indigo: #2E2A4F;
  --wine: #5A1F2B;
  --moss: #8FBFA3;
  --sage: #6B7F76;
  --ink-deep: #071410;
  --max: 1280px;
  --pad: clamp(16px, 4vw, 48px);
  --radius: 6px;
  --header-h: 96px;
  --ease: cubic-bezier(.2, .8, .3, 1);
  --sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "PingFang SC", "Noto Sans SC", "Alibaba PuHuiTi", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

body {
  margin: 0;
  background: var(--night);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.66;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 900;
  font-stretch: 87.5%;
  line-height: 1.1;
  letter-spacing: -.005em;
  margin: 0 0 .55em;
}
h1 { font-size: clamp(2.2rem, 6vw, 5rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }
h4 { font-size: clamp(1rem, 1.4vw, 1.15rem); }

p { margin: 0 0 1em; }

a { color: var(--moss); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--tape); }

ul, ol { margin: 0 0 1em; padding-left: 1.15em; }

img { max-width: 100%; height: auto; }

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--tape);
  outline-offset: 2px;
  border-radius: 2px;
}

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .06em;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-160%);
  background: var(--tape);
  color: #1B1508;
  font-weight: 800;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: var(--radius);
  transition: transform 160ms var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 阅读进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 120;
  background: rgba(244, 239, 227, .08);
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--pitch) 0%, var(--tape) 60%, var(--dusk) 100%);
  transition: transform 140ms linear;
}

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  color: var(--paper);
  background: rgba(11, 31, 26, .18);
  transition: background 200ms var(--ease), box-shadow 200ms var(--ease);
}
.site-header[data-scrolled="true"] {
  background: rgba(16, 44, 36, .94);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  backdrop-filter: blur(14px) saturate(130%);
  box-shadow: 0 20px 44px -32px rgba(0, 0, 0, .95);
  border-bottom: 1px solid rgba(244, 239, 227, .14);
}

.header-shell {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.site-header__strip {
  overflow: hidden;
  max-height: 44px;
  background: rgba(16, 44, 36, .55);
  border-bottom: 1px solid rgba(244, 239, 227, .12);
  transition: max-height 200ms var(--ease), opacity 160ms var(--ease), border-color 160ms var(--ease);
}
.site-header__strip .header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 34px;
}
.site-header[data-scrolled="true"] .site-header__strip {
  max-height: 0;
  opacity: 0;
  border-color: transparent;
}
.strip-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--paper);
  opacity: .88;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.strip-note__dot {
  width: 7px; height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--dusk);
  box-shadow: 0 0 0 3px rgba(224, 138, 46, .18);
}
.strip-time {
  margin: 0;
  font-size: .7rem;
  color: var(--sage);
  white-space: nowrap;
}

.header-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 28px);
  padding-block: clamp(10px, 1.6vw, 16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--paper);
  flex: 0 0 auto;
}
.brand__mark {
  display: inline-block;
  padding: 4px 7px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--tape);
  border: 1.5px solid var(--tape);
  border-radius: 3px;
  transform: rotate(-1.5deg);
  background: rgba(242, 199, 68, .08);
  transition: background 180ms var(--ease), color 180ms var(--ease);
}
.brand:hover .brand__mark { background: var(--tape); color: #1B1508; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-family: var(--display);
  font-weight: 900;
  font-stretch: 87.5%;
  font-size: 1.05rem;
  letter-spacing: .02em;
}
.brand__tag {
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .16em;
  color: var(--sage);
}

/* ---------- 主导航 ---------- */
.site-nav { display: flex; align-items: center; }
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-list__item { margin: 0; }
.nav-list__link {
  position: relative;
  display: inline-block;
  padding: 6px 2px 8px;
  color: var(--paper);
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  opacity: .86;
  transition: opacity 160ms var(--ease), color 160ms var(--ease);
}
.nav-list__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--tape);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 180ms var(--ease);
}
.nav-list__link:hover,
.nav-list__link:focus-visible { opacity: 1; color: var(--tape); }
.nav-list__link:hover::after,
.nav-list__link:focus-visible::after { transform: scaleX(1); }
.nav-list__link[aria-current="page"] {
  color: var(--tape);
  opacity: 1;
}
.nav-list__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--dusk);
}

.site-nav__foot { display: none; }

/* ---------- 工具区 ---------- */
.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border: 1px solid rgba(244, 239, 227, .24);
  border-radius: 4px;
  background: rgba(244, 239, 227, .06);
  color: var(--paper);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-decoration: none;
  cursor: pointer;
  transition: background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}
.tool-btn:hover,
.tool-btn[aria-expanded="true"] {
  background: rgba(242, 199, 68, .16);
  border-color: var(--tape);
  color: var(--tape);
}
.tool-btn__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--dusk);
  box-shadow: 0 0 0 3px rgba(224, 138, 46, .2);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--display);
  font-weight: 800;
  font-size: .86rem;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.btn--primary {
  background: var(--dusk);
  color: #1B1206;
  border-color: rgba(0, 0, 0, .22);
  box-shadow: 0 10px 24px -16px rgba(224, 138, 46, .9);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--tape);
  color: #1B1508;
  box-shadow: 0 14px 30px -16px rgba(242, 199, 68, .85);
}
.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(244, 239, 227, .32);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: rgba(244, 239, 227, .1);
  border-color: var(--tape);
  color: var(--tape);
}

/* ---------- 移动菜单按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  background: rgba(244, 239, 227, .07);
  border: 1px solid rgba(244, 239, 227, .26);
  border-radius: 4px;
  color: var(--paper);
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  cursor: pointer;
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}
.nav-toggle:hover { border-color: var(--tape); }
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 12px;
}
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--tape);
  border-radius: 1px;
  transition: transform 200ms var(--ease), opacity 160ms var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { line-height: 1; }

.nav-scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 85;
  border: 0;
  padding: 0;
  margin: 0;
  background: rgba(7, 20, 16, .74);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.nav-scrim[hidden] { display: none; }

/* ---------- 章节索引抽屉 ---------- */
.index-panel {
  position: absolute;
  top: calc(100% - 2px);
  right: var(--pad);
  z-index: 95;
  width: min(340px, calc(100vw - 32px));
  padding: 14px;
  background: rgba(16, 44, 36, .96);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(244, 239, 227, .16);
  border-radius: 10px;
  box-shadow: 0 28px 64px -24px rgba(0, 0, 0, .9);
}
.index-panel[hidden] { display: none; }
.index-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(244, 239, 227, .14);
}
.index-panel__title {
  margin: 0;
  font-size: .72rem;
  color: var(--tape);
  letter-spacing: .16em;
}
.index-panel__close {
  padding: 4px 8px;
  background: transparent;
  border: 1px solid rgba(244, 239, 227, .24);
  border-radius: 3px;
  color: var(--moss);
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .08em;
  cursor: pointer;
}
.index-panel__close:hover { color: var(--tape); border-color: var(--tape); }
.index-panel__label {
  display: block;
  margin: 12px 0 6px;
  font-size: .74rem;
  color: var(--sage);
  letter-spacing: .04em;
}
.index-panel__input {
  width: 100%;
  padding: 9px 11px;
  background: rgba(11, 31, 26, .85);
  border: 1px solid rgba(244, 239, 227, .2);
  border-radius: 4px;
  color: var(--paper);
  font-family: var(--sans);
  font-size: .86rem;
}
.index-panel__input::placeholder { color: var(--sage); }
.index-panel__input:disabled { opacity: .5; }
.index-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  max-height: 44vh;
  overflow: auto;
}
.index-list__item { margin: 0; }
.index-list__item[hidden] { display: none; }
.index-list__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 6px;
  color: var(--paper);
  font-size: .9rem;
  text-decoration: none;
  border-bottom: 1px dashed rgba(244, 239, 227, .14);
  transition: background 160ms var(--ease), color 160ms var(--ease);
}
.index-list__link:hover,
.index-list__link:focus-visible {
  background: rgba(244, 239, 227, .07);
  color: var(--tape);
}
.index-list__link[data-active="true"] {
  color: var(--tape);
  border-bottom-color: var(--tape);
}
.index-list__index { color: var(--sage); font-size: .74rem; min-width: 2ch; }
.index-list__label { flex: 1 1 auto; }
.index-panel__empty {
  margin: 10px 0 0;
  font-size: .82rem;
  color: var(--moss);
}
.index-panel__empty[hidden] { display: none; }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--alley) 0%, var(--ink-deep) 78%);
  color: var(--paper);
}
.footer-spacer { height: 96px; background: var(--night); }
.footer-band {
  height: 8px;
  background: linear-gradient(90deg,
    var(--pitch) 0%, var(--pitch) 28%,
    var(--tape) 28%, var(--tape) 38%,
    var(--dusk) 38%, var(--dusk) 62%,
    var(--wine) 62%, var(--wine) 74%,
    var(--indigo) 74%, var(--indigo) 100%);
}
.footer-shell {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) var(--pad) clamp(24px, 3vw, 40px);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(24px, 3vw, 36px);
  border-bottom: 1px solid rgba(244, 239, 227, .14);
}
.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.brand--footer .brand__name { font-size: 1.15rem; }
.footer-motto {
  margin: 0;
  max-width: 24ch;
  font-size: .92rem;
  line-height: 1.6;
  color: var(--moss);
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}
.footer-col { min-width: 0; }
.footer-col__title {
  margin: 0 0 10px;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--tape);
  text-transform: uppercase;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin: 0; }
.footer-links a {
  display: block;
  padding: 6px 0;
  color: var(--moss);
  font-size: .92rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), padding-left 160ms var(--ease);
}
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--tape);
  border-bottom-color: rgba(242, 199, 68, .5);
  padding-left: 4px;
}

.footer-next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin: clamp(20px, 3vw, 32px) 0;
  padding: 16px 18px;
  background: rgba(242, 199, 68, .1);
  border: 1px solid rgba(242, 199, 68, .34);
  border-left: 4px solid var(--tape);
  border-radius: 4px;
}
.footer-next__title {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--tape);
}
.footer-next__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-next__link {
  display: inline-flex;
  padding: 7px 14px;
  background: rgba(11, 31, 26, .82);
  border: 1px solid rgba(244, 239, 227, .2);
  border-radius: 999px;
  color: var(--paper);
  font-size: .82rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
.footer-next__link:hover,
.footer-next__link:focus-visible {
  background: var(--dusk);
  border-color: var(--dusk);
  color: #1B1206;
}

.footer-contact {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid rgba(244, 239, 227, .12);
  border-bottom: 1px solid rgba(244, 239, 227, .12);
}
.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-size: .88rem;
  color: var(--moss);
}
.footer-contact__key {
  min-width: 6.5em;
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--sage);
}
.footer-contact__value { color: var(--paper); }
.copy-btn {
  padding: 3px 8px;
  background: rgba(244, 239, 227, .06);
  border: 1px dashed rgba(244, 239, 227, .3);
  border-radius: 3px;
  color: var(--paper);
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .02em;
  cursor: pointer;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}
.copy-btn:hover,
.copy-btn:focus-visible { color: var(--tape); border-color: var(--tape); }
.copy-btn.is-copied {
  color: #1B1508;
  background: var(--tape);
  border-color: var(--tape);
  border-style: solid;
}
.footer-note {
  margin: 16px 0 0;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--sage);
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(244, 239, 227, .1);
  font-size: .78rem;
  color: var(--sage);
}
.footer-legal__copy { margin: 0; }
.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-legal__links a { color: var(--moss); text-decoration: none; }
.footer-legal__links a:hover,
.footer-legal__links a:focus-visible { color: var(--tape); }
.footer-icp { margin: 0; font-size: .72rem; color: var(--sage); letter-spacing: .04em; }

/* ---------- 通用容器与正文 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.prose {
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.68;
}
.prose p { margin: 0 0 1em; }
.prose strong { color: var(--tape); font-weight: 800; }
.prose h3 { margin-top: 1.6em; }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--sage);
}
.breadcrumb__link { color: var(--moss); text-decoration: none; }
.breadcrumb__link:hover,
.breadcrumb__link:focus-visible { color: var(--tape); }
.breadcrumb__sep { color: var(--sage); opacity: .7; }
.breadcrumb__current { color: var(--tape); }

/* ---------- 栅格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}
.grid--asym { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }
.grid--even { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* ---------- 卡片 / 便签 / 提示 ---------- */
.card {
  position: relative;
  padding: clamp(16px, 2vw, 24px);
  border-radius: var(--radius);
  border: 1px solid rgba(244, 239, 227, .14);
  background: rgba(16, 44, 36, .5);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), background 180ms var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -32px rgba(0, 0, 0, .95);
}
.card--glass {
  background: rgba(16, 44, 36, .55);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(244, 239, 227, .14);
}
.card--glass:hover { background: rgba(16, 44, 36, .72); }
.card--paper {
  background: var(--paper);
  color: #16221C;
  border-color: rgba(11, 31, 26, .14);
}
.card--paper h3, .card--paper h4 { color: #0F1A15; }
.card--paper a { color: var(--pitch); }
.card--paper a:hover, .card--paper a:focus-visible { color: #12401F; }

.sticker {
  position: relative;
  padding: 18px 20px;
  background: var(--tape);
  color: #1F1808;
  border-radius: 4px;
  transform: rotate(-1.2deg);
  box-shadow: 0 16px 34px -22px rgba(0, 0, 0, .95);
  transition: transform 180ms var(--ease);
}
.sticker::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 50%;
  width: 76px;
  height: 20px;
  transform: translateX(-50%) rotate(-3deg);
  background: rgba(244, 239, 227, .5);
  border-radius: 2px;
}
.sticker:hover { transform: rotate(0deg); }
.sticker a { color: #2C2109; }

.notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(244, 239, 227, .18);
  border-left: 4px solid var(--pitch);
  background: rgba(16, 44, 36, .6);
  font-size: .92rem;
}
.notice--alert {
  border-left-color: var(--red);
  background: rgba(90, 31, 43, .38);
}

/* ---------- 标签与徽章 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(143, 191, 163, .45);
  border-radius: 999px;
  color: var(--moss);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  line-height: 1.6;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: #150E06;
  background: var(--paper-2);
}
.badge--red { background: var(--red); color: #FDF4F1; }
.badge--yellow { background: var(--yellow); color: #1C1405; }

.chapter-no {
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .18em;
  color: var(--sage);
  transition: color 200ms var(--ease);
}
[data-chapter] { scroll-margin-top: calc(var(--header-h) + 16px); }
[data-chapter].is-active .chapter-no { color: var(--tape); }

/* ---------- 章节色带 ---------- */
.divider-band {
  height: 8px;
  width: 100%;
  background: var(--pitch);
}
.divider-band--pitch { background: linear-gradient(90deg, var(--pitch) 0%, var(--pitch) 70%, var(--tape) 70%, var(--tape) 100%); }
.divider-band--dusk { background: linear-gradient(90deg, var(--dusk) 0%, var(--dusk) 45%, var(--tape) 45%, var(--tape) 100%); }
.divider-band--indigo { background: var(--indigo); }
.divider-band--wine { background: var(--wine); }

/* ---------- 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(244, 239, 227, .14);
  background:
    radial-gradient(120% 90% at 20% 10%, rgba(30, 91, 58, .55) 0%, rgba(11, 31, 26, .95) 70%),
    var(--alley);
  aspect-ratio: 4 / 3;
}
.media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(105%) contrast(103%);
}
.media__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  margin: 0;
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(11, 31, 26, 0) 0%, rgba(11, 31, 26, .88) 70%);
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }
.media--bleed { margin-inline: calc(var(--pad) * -1); border-radius: 0; border-inline: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .nav-list { gap: 10px; }
  .nav-list__link { font-size: .8rem; }
}

@media (max-width: 960px) {
  :root { --header-h: 72px; }

  .site-header[data-scrolled="false"] { background: rgba(11, 31, 26, .55); }
  .header-cta { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 95;
    display: block;
    max-height: 84vh;
    overflow: auto;
    padding: 20px var(--pad) calc(22px + env(safe-area-inset-bottom));
    background: var(--alley);
    border-top: 2px solid var(--dusk);
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -28px 64px rgba(0, 0, 0, .6);
    transform: translateY(104%);
    visibility: hidden;
    transition: transform 220ms var(--ease), visibility 220ms var(--ease);
  }
  .site-nav[data-open="true"] {
    transform: translateY(0);
    visibility: visible;
  }

  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list__link {
    display: block;
    padding: 13px 6px;
    font-size: 1rem;
    letter-spacing: .02em;
    border-bottom: 1px solid rgba(244, 239, 227, .1);
    opacity: 1;
  }
  .nav-list__link::after { display: none; }
  .nav-list__link[aria-current="page"] {
    color: var(--tape);
    background: rgba(242, 199, 68, .09);
    border-bottom-color: rgba(242, 199, 68, .5);
    padding-left: 12px;
  }
  .site-nav__foot {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
  }
  .site-nav__foot .btn { flex: 1 1 140px; }

  .nav-scrim { display: block; }
  body.is-nav-open { overflow: hidden; }

  .index-panel {
    position: fixed;
    left: 12px; right: 12px;
    top: auto;
    bottom: calc(12px + env(safe-area-inset-bottom));
    width: auto;
    max-height: 68vh;
    overflow: auto;
    z-index: 100;
  }
  .index-list { max-height: 40vh; }

  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--asym, .grid--even { grid-template-columns: minmax(0, 1fr); }
  .media--bleed { margin-inline: 0; border-radius: var(--radius); border-inline: 1px solid rgba(244, 239, 227, .14); }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .site-header__strip .header-shell { min-height: 30px; }
  .strip-note { font-size: .68rem; letter-spacing: .02em; }
  .strip-time { display: none; }
  .brand__tag { display: none; }
  .header-tools { gap: 8px; }
  .tool-btn--index { display: none; }
  .footer-cols { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .footer-links a { padding: 8px 0; }
  .footer-next { padding: 14px; }
  .footer-next__link { font-size: .78rem; padding: 6px 12px; }
  .footer-contact__key { min-width: 5.5em; }
  .footer-spacer { height: 56px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .nav-toggle__text { display: none; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .card:hover { transform: none; }
  .sticker, .sticker:hover { transform: none; }
  .scroll-progress__bar { transition: none; }
}