/* ============================================================
   完美体育赛场 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部轨道 / 页脚 / 基础组件
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, p,
ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }

ul, ol { list-style: none; }

img, svg, video { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; background: none; border: 0; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --night: #07120F;
  --green-deep: #0E3B2E;
  --green-mid: #16543F;
  --blue: #2F7BFF;
  --indigo: #0B2E6B;
  --violet: #2B1B4A;
  --flag: #FF5A2B;
  --wine: #5A1F2E;
  --paper: #F2F4EE;
  --line: #C9D2CB;
  --mono-gray: #6F7F78;
  --gold: #D9A441;

  --ink: var(--paper);
  --muted: rgba(242, 244, 238, .64);
  --hairline: rgba(242, 244, 238, .18);

  --font-display: "Helvetica Neue", "Arial Narrow", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Noto Sans SC", monospace;

  --rail-w: 252px;
  --header-h: 64px;
  --edge: clamp(20px, 4vw, 64px);
  --shadow-hard: 8px 8px 0 rgba(7, 18, 15, .85);
  --shadow-soft: 5px 5px 0 rgba(7, 18, 15, .5);
  --dur: 180ms;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- 3. 基础与中文排版 ---------- */
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  padding-top: var(--header-h);
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

@media (min-width: 1024px) {
  body { padding-top: 0; padding-left: var(--rail-w); }
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 1px;
}

#main-content { display: block; }
#main-content:focus { outline: none; }

::selection { background: var(--flag); color: var(--night); }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1200;
  padding: 10px 18px;
  background: var(--blue);
  color: var(--night);
  border: 2px solid var(--night);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  transform: translateY(-200%);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

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

/* ---------- 4. 头部：侧边轨道 ---------- */
.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 900;
  background: var(--green-deep);
  border-bottom: 2px solid var(--hairline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: var(--header-h);
  padding: 8px 14px 8px 16px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  background: var(--flag);
  color: var(--night);
  border: 2px solid var(--night);
  box-shadow: 3px 3px 0 rgba(7, 18, 15, .65);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
  transform: skewX(-7deg);
}

.brand__text { display: flex; flex-direction: column; min-width: 0; }

.brand__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--paper);
  white-space: nowrap;
}

.brand__latin {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .26em;
  color: rgba(242, 244, 238, .55);
}

/* 赛季索引 */
.season-index { display: none; }

/* 移动端抽屉按钮 */
.nav-toggle {
  position: relative;
  z-index: 920;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 2px solid rgba(242, 244, 238, .38);
  background: rgba(7, 18, 15, .4);
  color: var(--paper);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--blue); background: rgba(47, 123, 255, .2); }

.nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: inherit;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); background: var(--flag); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); background: var(--flag); }

/* 导航本体 */
.site-nav {
  position: fixed;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 880;
  width: 100%;
  padding: 14px 0 40px;
  overflow-y: auto;
  background: var(--green-deep);
  border-top: 3px solid var(--flag);
  transform: translateX(102%);
  visibility: hidden;
  transition: transform var(--dur) var(--ease), visibility 0s linear var(--dur);
}
.site-nav[data-open] {
  transform: translateX(0);
  visibility: visible;
  transition-delay: 0s;
}

.site-nav__list { display: flex; flex-direction: column; }

.site-nav__item { border-top: 1px solid var(--hairline); }
.site-nav__item:last-child { border-bottom: 1px solid var(--hairline); }

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px var(--edge);
  border-left: 4px solid transparent;
  color: rgba(242, 244, 238, .84);
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .08em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--mono-gray);
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  background: var(--green-mid);
  color: #fff;
  border-left-color: var(--blue);
  padding-left: calc(var(--edge) + 6px);
}

.site-nav__link[aria-current="page"] {
  background: var(--night);
  color: #fff;
  border-left-color: var(--flag);
}
.site-nav__link[aria-current="page"] .site-nav__index { color: var(--flag); }

/* 状态面板 */
.status-panel { display: none; }

/* 移动端滚动锁 */
@media (max-width: 1023.98px) {
  body[data-nav-locked] { overflow: hidden; }
}

/* ---------- 5. 桌面端：轨道布局 ---------- */
@media (min-width: 1024px) {
  .site-header {
    top: 0;
    bottom: 0;
    right: auto;
    left: 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 3px solid var(--night);
    background: linear-gradient(180deg, var(--green-deep) 0%, var(--green-deep) 62%, #0A2C22 100%);
  }

  .site-header::after {
    content: "";
    position: absolute;
    top: 9%;
    right: -3px;
    width: 3px;
    height: 78%;
    background: repeating-linear-gradient(180deg, var(--flag) 0 12px, transparent 12px 28px);
    opacity: .72;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: 100vh;
    min-height: 0;
    padding: 24px 0 22px;
    overflow-y: auto;
  }

  .site-header__brand {
    display: block;
    padding: 0 20px 0;
  }

  .brand__mark { width: 38px; height: 38px; font-size: 20px; }
  .brand__name { font-size: 18px; }

  .season-index {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-top: 18px;
    padding: 8px 12px;
    border-left: 3px solid var(--blue);
    background: linear-gradient(90deg, rgba(47, 123, 255, .18), transparent 82%);
  }
  .season-index__label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .22em;
    color: rgba(242, 244, 238, .68);
  }
  .season-index__value {
    font-size: 12px;
    font-weight: 700;
    color: var(--paper);
  }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    flex: 1 1 auto;
    width: auto;
    padding: 22px 0 0;
    overflow: visible;
    background: none;
    border-top: 0;
    transform: none;
    visibility: visible;
  }

  .site-nav__item { border-top: 0; }
  .site-nav__item:last-child { border-bottom: 0; }

  .site-nav__link {
    gap: 12px;
    padding: 13px 20px;
    font-size: 17px;
    letter-spacing: .1em;
  }
  .site-nav__link:hover,
  .site-nav__link:focus-visible { padding-left: 26px; }

  .status-panel {
    display: block;
    margin: 18px 20px 0;
    padding: 14px;
    background: var(--night);
    border: 2px solid rgba(242, 244, 238, .24);
    box-shadow: 6px 6px 0 rgba(0, 0, 0, .45);
  }

  .status-panel__row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .14em;
    color: var(--mono-gray);
  }
  .status-panel__row + .status-panel__row {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed rgba(242, 244, 238, .16);
  }
  .status-panel__key { flex: none; }
  .status-panel__value {
    font-size: 13px;
    font-weight: 700;
    color: var(--paper);
    text-align: right;
  }
  .status-panel__value--mono { color: var(--blue); }

  .rail-progress {
    position: relative;
    height: 7px;
    margin-top: 14px;
    background: rgba(242, 244, 238, .14);
    border: 1px solid rgba(242, 244, 238, .22);
    overflow: hidden;
  }
  .rail-progress__bar {
    display: block;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--flag));
  }
  .rail-progress__text {
    margin-top: 6px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .18em;
    color: var(--mono-gray);
  }
  .rail-progress__text .mono { color: var(--paper); }

  .status-panel__link {
    display: block;
    margin-top: 12px;
    padding: 9px 10px;
    text-align: center;
    border: 2px solid var(--blue);
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .22em;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  }
  .status-panel__link:hover,
  .status-panel__link:focus-visible { background: var(--blue); color: var(--night); }
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  padding: clamp(42px, 6vw, 78px) var(--edge) 26px;
  background: var(--green-deep);
  color: var(--paper);
  border-top: 3px solid var(--night);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(240px, 42%);
  height: 4px;
  background: var(--flag);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  max-width: 1180px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .footer__grid { grid-template-columns: 1.1fr 1.35fr 1fr; gap: 48px; }
}

.footer__col { min-width: 0; }

.footer__brand {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--paper);
}

.footer__tagline {
  margin-top: 6px;
  font-size: 14px;
  color: rgba(242, 244, 238, .6);
}

.footer__title {
  margin-top: 22px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(242, 244, 238, .22);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .24em;
  color: var(--paper);
}

.footer__col:not(:first-child) .footer__title { margin-top: 0; }

.footer__list { margin-top: 14px; }
.footer__list li + li { margin-top: 10px; }

.footer__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: rgba(242, 244, 238, .82);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible { color: #fff; border-bottom-color: var(--flag); }

.footer__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--blue);
}

.footer__list--contact .footer__item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  font-size: 15px;
}

.footer__key {
  flex: none;
  min-width: 40px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mono-gray);
  padding-top: 3px;
}

.footer__value { color: var(--paper); word-break: break-word; }

.footer__note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--gold);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(242, 244, 238, .62);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  max-width: 1180px;
  margin: clamp(28px, 4vw, 44px) auto 0;
  padding-top: 18px;
  border-top: 1px solid rgba(242, 244, 238, .2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(242, 244, 238, .6);
}

.footer__legal { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer__legal .footer__link { font-size: 12px; }

/* ---------- 7. 通用容器与分区 ---------- */
.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-inline: var(--edge);
}

.section {
  position: relative;
  padding-block: clamp(48px, 8vw, 108px);
}

.section__inner {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-inline: var(--edge);
}

.section--night { background: var(--night); color: var(--paper); }
.section--green { background: var(--green-deep); color: var(--paper); }
.section--mid   { background: var(--green-mid); color: var(--paper); }
.section--indigo{ background: var(--indigo); color: var(--paper); }
.section--violet{ background: var(--violet); color: var(--paper); }
.section--wine  { background: var(--wine); color: var(--paper); }

.section--paper {
  background: var(--paper);
  color: #0B1A15;
  --ink: #0B1A15;
  --muted: rgba(11, 26, 21, .66);
  --line: #1B2B24;
  --hairline: rgba(11, 26, 21, .18);
  --shadow-hard: 8px 8px 0 rgba(11, 26, 21, .85);
  --shadow-soft: 5px 5px 0 rgba(11, 26, 21, .55);
}

.angle-bar {
  height: 6px;
  background: linear-gradient(90deg, var(--flag) 0 22%, var(--blue) 22% 66%, var(--green-mid) 66% 100%);
  transform: skewX(-16deg);
}

.rule {
  height: 3px;
  border: 0;
  background: var(--ink);
  opacity: .9;
}

/* ---------- 8. 文字层级 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--blue);
}

.display-xl,
.display-lg,
.display-md {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -.005em;
  text-transform: uppercase;
}

.display-xl { font-size: clamp(40px, 7.4vw, 76px); }
.display-lg { font-size: clamp(30px, 5vw, 48px); }
.display-md { font-size: clamp(24px, 3.4vw, 36px); }

.numbered-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px 18px;
  align-items: baseline;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.numbered-head__index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--blue);
  padding-bottom: 4px;
  border-bottom: 2px solid var(--blue);
}

.numbered-head__title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: .02em;
}

.numbered-head__note {
  grid-column: 1 / -1;
  max-width: 56ch;
  font-size: 16px;
  color: var(--muted);
}

/* ---------- 9. 栅格 ---------- */
.grid {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .grid--5-7 { grid-template-columns: 5fr 7fr; }
  .grid--4-8 { grid-template-columns: 4fr 8fr; }
}

.grid--cards {
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
}

/* ---------- 10. 卡片 · 指标 · 标签 ---------- */
.card {
  padding: clamp(20px, 2.4vw, 28px);
  background: rgba(7, 18, 15, .58);
  border: 3px solid rgba(242, 244, 238, .24);
  box-shadow: var(--shadow-hard);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.card:hover {
  border-color: var(--blue);
  box-shadow: 11px 11px 0 rgba(7, 18, 15, .72);
}

.section--paper .card {
  background: #fff;
  border-color: #0B1A15;
}

.card__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .04em;
}

.card__meta {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-left: 3px solid var(--blue);
  background: rgba(47, 123, 255, .1);
}

.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.data-bar {
  display: block;
  height: 10px;
  background: rgba(127, 143, 136, .3);
  border: 2px solid var(--line);
}

.data-bar__fill {
  display: block;
  width: var(--value, 50%);
  height: 100%;
  background: var(--blue);
  transition: width var(--dur) var(--ease);
}

.data-bar--flag .data-bar__fill { background: var(--flag); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink);
}

.tag--blue { border-color: var(--blue); color: var(--blue); }
.tag--flag { border-color: var(--flag); color: var(--flag); background: rgba(255, 90, 43, .14); }
.tag--gold { border-color: var(--gold); color: var(--gold); }

/* ---------- 11. 图片容器（页面阶段放置 <img class="media__img">） ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--green-mid);
  border: 3px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.08) brightness(.92);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 18, 15, .06) 0%, rgba(7, 18, 15, .28) 58%, rgba(7, 18, 15, .62) 100%);
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3  { aspect-ratio: 4 / 3; }
.media--3x4  { aspect-ratio: 3 / 4; }
.media--1x1  { aspect-ratio: 1 / 1; }

.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  max-width: 100%;
  padding: 9px 14px;
  border-top: 2px solid var(--flag);
  background: rgba(7, 18, 15, .8);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

/* ---------- 12. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 2px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.btn:hover,
.btn:focus-visible {
  box-shadow: var(--shadow-soft);
  transform: translate(-2px, -2px);
}

.btn--primary { background: var(--blue); border-color: var(--blue); color: var(--night); }
.btn--primary:hover,
.btn--primary:focus-visible { background: var(--flag); border-color: var(--flag); }

.btn--flag { background: var(--flag); border-color: var(--flag); color: #16090 4; color: #160904; }

.btn--ghost { border-color: rgba(242, 244, 238, .45); color: var(--paper); }
.btn--ghost:hover,
.btn--ghost:focus-visible { border-color: var(--flag); background: rgba(255, 90, 43, .14); }

.section--paper .btn--ghost { border-color: #0B1A15; color: #0B1A15; }

/* ---------- 13. 面包屑 / 正文 / 列表 ---------- */
.breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs__item::after { content: "/"; color: var(--mono-gray); }
.breadcrumbs__item:last-child::after { content: ""; }

.breadcrumbs__link {
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible { color: var(--ink); border-bottom-color: var(--blue); }

.breadcrumbs__current { color: var(--ink); }

.prose { max-width: 38em; font-size: 17px; }
.prose p + p { margin-top: 1em; }
.prose h2 { margin: 1.8em 0 .6em; font-family: var(--font-display); font-size: 28px; font-weight: 800; line-height: 1.2; }
.prose h3 { margin: 1.5em 0 .5em; font-family: var(--font-display); font-size: 22px; font-weight: 800; line-height: 1.25; }
.prose ul { list-style: square; padding-left: 1.3em; }
.prose ol { list-style: decimal; padding-left: 1.4em; }
.prose li + li { margin-top: .5em; }
.prose a { border-bottom: 1px solid var(--blue); }
.prose a:hover { color: var(--blue); }
.prose strong { font-weight: 700; }

.list-plain li + li { margin-top: 10px; }

/* ---------- 14. 显现协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 响应式收尾与动效降级 ---------- */
@media (max-width: 480px) {
  .brand__latin { display: none; }
  .nav-toggle__text { display: none; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (min-width: 481px) and (max-width: 1023.98px) {
  .site-header__inner { padding-inline: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal] { opacity: 1; transform: none; }
  .btn:hover, .btn:focus-visible { transform: none; }
}