/* ==========================================================================
   BSPORTS · 共享站点套件 /assets/site.css
   夜场转播室 × 数据指挥中心
   ========================================================================== */

/* ---------- 1. 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 { max-width: 100%; }
img { display: block; height: auto; }
button { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
hr { border: 0; }

/* ---------- 2. tokens ---------- */
:root {
  --green-900: #06170F;
  --green-800: #0A2016;
  --green-700: #0D2A1D;
  --green-500: #17452F;
  --paper-100: #F5EBD9;
  --paper-200: #E9DDC4;
  --ink-900: #1B1611;
  --orange: #FF6A1A;
  --orange-soft: #FF8340;
  --blue: #46A9F2;
  --gold: #B99744;
  --gold-deep: #7A5F1F;
  --mist: #C8D6CC;

  --line: rgba(185, 151, 68, 0.30);
  --line-strong: rgba(185, 151, 68, 0.55);

  --font-display: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-serif: "Source Serif 4", "Noto Serif SC", Georgia, serif;

  --shell-w: 1180px;
  --gutter: 20px;
  --gap: 24px;
  --hard-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
  --hard-shadow-lg: 6px 6px 0 rgba(0, 0, 0, 0.5);
}

@media (min-width: 768px) {
  :root { --gutter: 32px; --gap: 28px; }
}

/* ---------- 3. base ---------- */
body {
  background: var(--green-900);
  color: var(--paper-100);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

::selection { background: var(--orange); color: var(--ink-900); }

#main-content { display: block; scroll-margin-top: 16px; }

/* ---------- 4. 布局容器 ---------- */
.shell {
  width: min(var(--shell-w), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.page-main { display: block; }

.page-section {
  padding-block: clamp(40px, 6vw, 76px);
  position: relative;
}
.page-section--panel { background: var(--green-700); border-block: 1px solid var(--green-500); }
.page-section--paper { background: var(--paper-100); color: var(--ink-900); }

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1fr); }

@media (min-width: 900px) {
  .grid--split { grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 40px; }
}

.rule { height: 1px; background: var(--line); width: 100%; }

/* ---------- 5. 排版 ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.display-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 5vw, 62px);
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--paper-100);
  margin: 0;
}
.page-section--paper .display-title { color: var(--ink-900); }

.lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}
.page-section--paper .lede { color: #4A433A; }

@media (min-width: 768px) { .lede { font-size: 17px; } }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 24px;
}

.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}
.prose > * + * { margin-top: 1em; }
.prose h2, .prose h3 {
  font-family: var(--font-display);
  color: var(--paper-100);
  line-height: 1.2;
  letter-spacing: 0.02em;
}
.prose h2 { font-size: 26px; margin-top: 1.6em; }
.prose h3 { font-size: 20px; margin-top: 1.4em; }
.prose a {
  color: var(--blue);
  border-bottom: 1px solid rgba(70, 169, 242, 0.45);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.prose a:hover { border-bottom-color: var(--blue); color: #8CC8F7; }
.prose ul, .prose ol { display: grid; gap: 0.35em; }
.prose li { position: relative; padding-left: 1.1em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 1px;
  background: var(--gold);
}
.prose strong { color: var(--paper-100); font-weight: 600; }

.prose--paper { color: var(--ink-900); }
.prose--paper h2, .prose--paper h3, .prose--paper strong { color: var(--ink-900); }
.prose--paper a { color: #14618F; border-bottom-color: rgba(20, 97, 143, 0.4); }

.fine-print {
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.annotation {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-transform: uppercase;
}
.annotation--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.3em;
  font-size: 11px;
}

/* ---------- 6. 顶部：跳转、进度线 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-180%);
  background: var(--orange);
  color: var(--ink-900);
  padding: 10px 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.06em;
  transition: transform 0.18s ease;
}
.skip-link:focus { transform: translateY(0); }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 150;
  pointer-events: none;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- 7. 页头 ---------- */
.site-header {
  position: relative;
  background: var(--green-900);
}

/* 7.1 状态条 */
.header-utility {
  border-bottom: 1px solid var(--line);
  background: var(--green-900);
}
.header-utility__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}
@media (min-width: 768px) {
  .header-utility__inner { font-size: 11px; padding-block: 9px; letter-spacing: 0.16em; }
}
.header-utility__status {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.status-dot {
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--orange);
}
.header-utility__search {
  color: var(--blue);
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.header-utility__search:hover { border-bottom-color: var(--blue); color: #8CC8F7; }

/* 7.2 刊头 */
.masthead { padding-block: 20px 16px; }
@media (min-width: 768px) { .masthead { padding-block: 30px 24px; } }

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 3vw, 34px);
}
.masthead__rule {
  flex: 1 1 0;
  min-width: 12px;
  height: 1px;
  background: var(--line-strong);
}
.masthead__brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--paper-100);
}
.masthead__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 7vw, 64px);
  line-height: 0.9;
  letter-spacing: 0.16em;
  margin-right: -0.16em;
  transition: color 0.2s ease;
}
.masthead__brand:hover .masthead__name,
.masthead__brand:focus-visible .masthead__name { color: var(--paper-200); }
.masthead__subtitle {
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.3em;
  padding-left: 0.3em;
  color: var(--mist);
  white-space: nowrap;
}
@media (min-width: 768px) { .masthead__subtitle { font-size: 11px; letter-spacing: 0.34em; } }

/* 7.3 导航条 */
.navbar {
  position: relative;
  z-index: 60;
  background: var(--green-900);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}
.navbar__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 54px;
}
@media (min-width: 900px) {
  .navbar__inner { justify-content: center; min-height: 58px; }
}

/* 7.4 折叠按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 7px 10px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  color: var(--paper-100);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.nav-toggle:hover { border-color: var(--orange); color: var(--orange); }
.nav-toggle[aria-expanded="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
}
.nav-toggle__bars { display: inline-block; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 1px;
  margin: 3px 0;
  background: currentColor;
}
.nav-toggle__label { display: inline-block; }
@media (min-width: 900px) { .nav-toggle { display: none; } }

/* 7.5 主导航 */
.primary-nav { display: none; }
.primary-nav__list { display: flex; flex-direction: column; }
.primary-nav__item { border-bottom: 1px solid var(--line); }
.primary-nav__item:last-child { border-bottom: 0; }
.primary-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 2px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--paper-100);
  transition: color 0.2s ease;
}
.primary-nav__link:hover,
.primary-nav__link:focus-visible { color: var(--orange); }
.primary-nav__link[aria-current="page"] { color: var(--orange); }
.primary-nav__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 899px) {
  .primary-nav[data-open="true"] {
    display: block;
    position: absolute;
    top: 100%;
    left: calc(var(--gutter) * -1);
    right: calc(var(--gutter) * -1);
    background: var(--green-700);
    border-top: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 8px 0 rgba(0, 0, 0, 0.35);
    padding: 4px var(--gutter) 10px;
    animation: nav-fade 0.18s ease-out;
  }
}

@keyframes nav-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

@media (min-width: 900px) {
  .primary-nav {
    display: block;
    position: static;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
  }
  .primary-nav__list {
    flex-direction: row;
    align-items: center;
    flex-wrap: nowrap;
    gap: clamp(0px, 0.8vw, 8px);
  }
  .primary-nav__item { border: 0; }
  .primary-nav__link {
    position: relative;
    padding: 17px 11px;
    font-size: 15px;
    color: var(--mist);
  }
  .primary-nav__link::after {
    content: "";
    position: absolute;
    left: 11px;
    right: 11px;
    bottom: 10px;
    height: 2px;
    background: var(--orange);
    transform: scaleX(0);
    transform-origin: 0 50%;
    transition: transform 0.2s ease;
  }
  .primary-nav__link:hover,
  .primary-nav__link:focus-visible { color: var(--paper-100); }
  .primary-nav__link:hover::after,
  .primary-nav__link:focus-visible::after { transform: scaleX(1); }
  .primary-nav__link[aria-current="page"] { color: var(--paper-100); }
  .primary-nav__link[aria-current="page"]::after { transform: scaleX(1); }
  .primary-nav__index { display: none; }
}

@media (min-width: 900px) and (max-width: 1080px) {
  .primary-nav__link { font-size: 14px; padding: 17px 8px; }
  .primary-nav__link::after { left: 8px; right: 8px; }
}

/* 7.6 导航内 CTA */
.navbar__cta { flex: none; font-size: 12px; padding: 8px 12px; letter-spacing: 0.04em; }
@media (min-width: 900px) {
  .navbar__cta {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    padding: 9px 18px;
  }
}

/* ---------- 8. 按钮 ---------- */
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease,
              border-color 0.2s ease, box-shadow 0.2s ease;
}
.cta--timer {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.45);
}
.cta--timer:hover {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.5);
}
.cta--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--paper-100);
}
.cta--ghost:hover { border-color: var(--orange); color: var(--orange); }
.cta--paper {
  background: var(--paper-100);
  border-color: var(--paper-100);
  color: var(--ink-900);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.35);
}
.cta--paper:hover { background: var(--paper-200); border-color: var(--paper-200); }
.cta--block { width: 100%; }

/* ---------- 9. 页脚 ---------- */
.site-footer {
  background: var(--green-700);
  border-top: 1px solid var(--line-strong);
  color: var(--paper-100);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding-block: 44px 36px;
}
@media (min-width: 768px) {
  .footer-main { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; padding-block: 52px 44px; }
}
@media (min-width: 1024px) {
  .footer-main {
    grid-template-columns: 1.3fr 0.9fr 1.1fr;
    gap: 48px;
    padding-block: 64px 52px;
  }
}

.footer-brand { position: relative; }
.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 40px);
  line-height: 1;
  letter-spacing: 0.16em;
  margin-right: -0.16em;
  color: var(--paper-100);
}
.footer-brand__claim {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--paper-100);
}
.footer-brand__note {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}
.footer-brand__annotation { display: none; }
@media (min-width: 1024px) {
  .footer-brand__annotation {
    display: block;
    position: absolute;
    top: 2px;
    right: 4px;
    color: var(--gold);
  }
}

.footer-nav { display: block; }

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.footer-list { display: grid; gap: 10px; }
.footer-list__link {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  font-size: 15px;
  color: var(--mist);
  transition: color 0.2s ease;
}
.footer-list__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.2s ease;
}
.footer-list__link:hover { color: var(--paper-100); }
.footer-list__link:hover::after { transform: scaleX(1); }

.footer-contact__list {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}
.footer-contact__row { display: grid; gap: 2px; }
.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}
.footer-contact__value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--paper-100);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.footer-contact__value--text {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: 0.01em;
}
.footer-contact__cta { margin-top: 2px; }

.footer-legal {
  background: var(--green-900);
  border-top: 1px solid var(--line);
}
.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.footer-legal__meta { font-variant-numeric: tabular-nums; }
.footer-legal__links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-legal__link {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-legal__link:hover { color: var(--paper-100); border-bottom-color: var(--orange); }

/* ---------- 10. 通用组件 ---------- */
/* 10.1 卡片 */
.card {
  background: var(--green-700);
  border: 1px solid var(--green-500);
  padding: 22px;
  box-shadow: var(--hard-shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
  box-shadow: var(--hard-shadow-lg);
}
.card--paper {
  background: var(--paper-100);
  color: var(--ink-900);
  border-color: var(--paper-200);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
}
.card--paper:hover { border-color: var(--orange); }
.card__title {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: inherit;
  margin-bottom: 8px;
}
.card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.card--paper .card__meta { color: var(--gold-deep); }

/* 10.2 静态面板 */
.panel {
  background: var(--green-700);
  border: 1px solid var(--green-500);
  padding: 22px;
}
.panel--paper {
  background: var(--paper-100);
  color: var(--ink-900);
  border-color: var(--paper-200);
}

/* 10.3 比分牌 */
.scoreboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  background: var(--green-700);
  border: 1px solid var(--line);
}
.scoreboard__cell {
  padding: 18px 16px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin: -1px 0 0 -1px;
}
.scoreboard__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--paper-100);
  font-variant-numeric: tabular-nums;
}
.scoreboard__label {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}
.scoreboard__cell--accent .scoreboard__value { color: var(--orange); }

/* 10.4 筛选标签 */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.chip:hover { border-color: var(--paper-100); color: var(--paper-100); }
.chip[aria-pressed="true"] {
  background: var(--paper-100);
  border-color: var(--paper-100);
  color: var(--ink-900);
}

/* 10.5 折叠面板 */
.disclosure {
  background: var(--green-700);
  border: 1px solid var(--line);
}
.disclosure + .disclosure { margin-top: -1px; }
.disclosure__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--paper-100);
  transition: background-color 0.2s ease, color 0.2s ease;
}
.disclosure__summary::-webkit-details-marker { display: none; }
.disclosure__summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--orange);
}
.disclosure[open] .disclosure__summary::after { content: "–"; }
.disclosure__summary:hover { background: var(--green-500); }
.disclosure__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line);
  margin-top: 0;
  color: var(--mist);
  font-size: 15px;
}

/* 10.6 面包屑 */
.breadcrumbs { padding-block: 14px; }
.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs__link {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.breadcrumbs__link:hover { color: var(--paper-100); border-bottom-color: var(--orange); }
.breadcrumbs__sep { color: var(--gold); }
.breadcrumbs__current { color: var(--paper-100); }

/* 10.7 目录索引 */
.index-list {
  display: grid;
  border-top: 1px solid var(--line);
}
.index-list__item { border-bottom: 1px solid var(--line); }
.index-list__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 16px;
  padding: 14px 4px;
  color: var(--paper-100);
  transition: background-color 0.2s ease, padding-left 0.2s ease;
}
.index-list__link:hover { background: var(--green-700); padding-left: 12px; }
.index-list__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.index-list__label {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.index-list__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
}

/* 10.8 延伸阅读 */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.link-more::after { content: "→"; transition: transform 0.2s ease; }
.link-more:hover { color: var(--paper-100); border-bottom-color: var(--orange); }
.link-more:hover::after { transform: translateX(3px); }

/* 10.9 图片容器 */
.media {
  position: relative;
  display: block;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--green-700);
  border: 1px solid var(--line);
}
.media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__caption {
  display: block;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 11. 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 动效与可访问性降级 ---------- */
@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;
    transition-delay: 0ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .card:hover { transform: none; }
  .link-more:hover::after { transform: none; }
}