/* ==========================================================================
   ldsports看台 · /assets/site.css
   共享外壳：reset / 设计变量 / 中文排版 / 头部轨道 / 页脚 / 基础组件
   ========================================================================== */

:root {
  --color-surface: #fefefe;
  --color-surface-alt: #f5f5f5;
  --color-surface-deep: #e7e9e8;
  --color-ink: #414e45;
  --color-ink-soft: #637368;
  --color-ink-muted: #77887c;
  --color-line: #dcdedd;
  --color-primary: #308348;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e1ede5;
  --color-accent: #6f22dd;
  --color-accent-ink: #ffffff;
  --color-highlight: #e4d6f8;
  --color-focus: #6d16e9;
  --color-contrast-surface: #19261d;
  --color-contrast-ink: #e4e7e5;
  --color-contrast-line: #465049;
  --color-contrast-accent: #a372e9;
  --overlay-scrim: linear-gradient(180deg, rgba(25, 38, 29, 0.35) 0%, rgba(25, 38, 29, 0.72) 55%, rgba(25, 38, 29, 0.92) 100%);
  --font-heading: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 14.0px;
  --text-base: 15px;
  --text-lg: 17.2px;
  --text-xl: 19.8px;
  --text-2xl: 22.8px;
  --text-3xl: 26.2px;
  --text-4xl: 30.2px;
  --text-display: clamp(34px, 4.6vw, 59px);
  --text-figure: clamp(28px, 3.3vw, 42px);
  --weight-heading: 634;
  --weight-body: 400;
  --leading-body: 1.71;
  --leading-heading: 1.15;
  --tracking-heading: -0.0em;
  --radius-sm: 4px;
  --radius-md: 4px;
  --radius-lg: 4px;
  --radius-pill: 4px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 1px 0 rgba(65, 78, 69, 0.12);
  --shadow-2: 0 2px 0 rgba(65, 78, 69, 0.18);
  --space-1: 6px;
  --space-2: 12px;
  --space-3: 18px;
  --space-4: 24px;
  --space-6: 36px;
  --space-8: 48px;
  --container: 1220px;
  --measure: 70ch;
  --gutter: 18px;
  --section-y: 68px;
  --section-y-lg: 95px;
}

/* 外壳尺寸派生值：只描述轨道与抽屉，不改动上面的色板与字号 */
:root {
  --rail-width: 236px;
  --rail-offset: 0px;
  --drawer-width: min(320px, 86vw);
  --z-skip: 200;
  --z-drawer: 150;
  --z-scrim: 140;
  --z-header: 130;
}
@media (min-width: 1024px) {
  :root { --rail-offset: var(--rail-width); }
}

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

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
  scroll-behavior: smooth;
}
html.nav-open { overflow: hidden; }

body {
  margin: 0;
  padding-left: var(--rail-offset);
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  word-break: break-word;
  -webkit-font-smoothing: antialiased;
}

main { display: block; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  text-wrap: balance;
}
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-3); text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { max-width: 100%; height: auto; display: block; }
hr { border: 0; border-top: var(--border-thin) solid var(--color-line); margin: var(--space-4) 0; }

a { color: var(--color-primary); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }

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

code, kbd, samp, pre, .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

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

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

[hidden] { display: none !important; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   2. 跳转链接
   -------------------------------------------------------------------------- */
.skip-link {
  position: fixed;
  left: calc(var(--rail-offset) + var(--space-3));
  top: calc(-1 * var(--space-8) - var(--space-4));
  z-index: var(--z-skip);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  border: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: top .16s ease;
}
.skip-link:focus { top: var(--space-3); text-decoration: none; }

/* --------------------------------------------------------------------------
   3. 头部与左侧轨道导航
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.rail {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  color: var(--color-contrast-ink);
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.1;
  color: var(--color-contrast-ink);
}
.brand-sub {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

/* 抽屉按钮 */
.nav-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 8%, transparent);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color .16s ease, border-color .16s ease;
}
.nav-toggle:hover { border-color: var(--color-contrast-accent); }
.nav-toggle-bars {
  position: relative;
  width: 16px;
  height: 10px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-contrast-ink);
  transition: transform .18s ease;
}
.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }
.site-header[data-open="true"] .nav-toggle-bars::before { transform: translateY(4.5px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle-bars::after { transform: translateY(-4.5px) rotate(-45deg); }
.nav-toggle-text { white-space: nowrap; }

/* 导航本体：移动端为抽屉 */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-drawer);
  width: var(--drawer-width);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-3) var(--space-4);
  background-color: var(--color-contrast-surface);
  border-right: var(--border-thin) solid var(--color-contrast-line);
  overflow-y: auto;
  visibility: hidden;
  transform: translateX(-100%);
  transition: transform .22s ease, visibility .22s linear;
}
.site-header[data-open="true"] .site-nav {
  visibility: visible;
  transform: translateX(0);
}

.nav-head {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.nav-list { display: flex; flex-direction: column; gap: 2px; }

.nav-link {
  display: grid;
  grid-template-columns: 26px 1fr 8px;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: background-color .16s ease, border-color .16s ease;
}
.nav-link:hover {
  text-decoration: none;
  border-color: var(--color-contrast-line);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 8%, transparent);
}
.nav-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 55%, transparent);
}
.nav-label { line-height: 1.3; }
.nav-tick {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-contrast-line);
  transition: background-color .18s ease;
}
.nav-tick[data-cat="a"] { background-color: var(--color-primary); }
.nav-tick[data-cat="b"] { background-color: var(--color-contrast-accent); }
.nav-tick[data-cat="c"] { background-color: color-mix(in srgb, var(--color-contrast-accent) 60%, var(--color-primary)); }
.nav-tick[data-cat="d"] { background-color: color-mix(in srgb, var(--color-contrast-ink) 55%, transparent); }
.nav-tick[data-cat="e"] { background-color: color-mix(in srgb, var(--color-contrast-accent) 40%, var(--color-contrast-ink)); }
.nav-tick[data-cat="f"] { background-color: color-mix(in srgb, var(--color-contrast-accent) 75%, var(--color-contrast-ink)); }
.nav-link:hover .nav-tick { background-color: var(--color-contrast-accent); }

.nav-link[aria-current="page"] {
  background-color: color-mix(in srgb, var(--color-accent) 30%, transparent);
  border-color: var(--color-contrast-accent);
  color: var(--color-surface);
}
.nav-link[aria-current="page"] .nav-num { color: var(--color-contrast-accent); }
.nav-link[aria-current="page"] .nav-tick { background-color: var(--color-contrast-accent); }

.rail-foot {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.rail-note {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}
.rail-stamp {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-accent);
}
.rail-stamp-dot { opacity: .6; }

/* 遮罩 */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: var(--z-scrim);
  background-color: color-mix(in srgb, var(--color-contrast-surface) 74%, transparent);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s linear;
}
.site-header[data-open="true"] .nav-scrim { opacity: 1; visibility: visible; }

/* 桌面端：固定左轨道 */
@media (min-width: 1024px) {
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail-width);
    overflow-y: auto;
    overflow-x: hidden;
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--color-contrast-line);
  }
  .rail {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    min-height: 100%;
    padding: var(--space-4) var(--space-3);
  }
  .nav-toggle { display: none; }
  .site-nav {
    position: static;
    width: auto;
    flex: 1 1 auto;
    padding: 0;
    border: 0;
    background: none;
    overflow: visible;
    visibility: visible;
    transform: none;
    transition: none;
  }
  .nav-scrim { display: none; }
}

/* --------------------------------------------------------------------------
   4. 页脚：大步收尾
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: var(--section-y-lg);
  padding: var(--space-8) 0 var(--space-4);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.footer-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
.footer-top {
  display: grid;
  gap: var(--space-2);
  padding-bottom: var(--space-4);
}
.footer-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}
.footer-lead {
  max-width: var(--measure);
  margin: 0;
  font-size: var(--text-base);
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.footer-col { min-width: 0; }
.footer-head {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}
.footer-list { display: flex; flex-direction: column; gap: 1px; }
.footer-link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: 6px 0;
  border-bottom: var(--border-thin) solid transparent;
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: border-color .16s ease, color .16s ease;
}
.footer-link:hover {
  text-decoration: none;
  color: var(--color-surface);
  border-bottom-color: var(--color-contrast-line);
}
.footer-link .idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-accent);
}

.footer-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-xs);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}
.footer-sla .footer-note { margin-top: 0; margin-bottom: var(--space-2); }

.fact-list { display: flex; flex-direction: column; }
.fact-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: var(--space-2);
  padding: 6px 0;
  border-bottom: var(--border-thin) dashed var(--color-contrast-line);
}
.fact-key {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}
.fact-val {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  word-break: break-word;
}

.footer-mark {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  margin: var(--space-6) 0 var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.mark-word {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--color-contrast-ink);
}
.mark-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.footer-copy,
.footer-meta {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 64%, transparent);
}

/* --------------------------------------------------------------------------
   5. 版面骨架
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-3);
}
.container--narrow { max-width: 880px; }

.bleed {
  margin-left: calc((var(--rail-offset) + 100% - 100vw) / 2);
  margin-right: calc((100% - 100vw) / 2);
  width: auto;
}

.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--tight { padding-block: calc(var(--space-6) + var(--space-2)); }
.section--alt { background-color: var(--color-surface-alt); }

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: end;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}
.section-head h2,
.section-head h3 { margin: 0; }
.section-head h2 { font-size: var(--text-3xl); }
.section-num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-body);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: color-mix(in srgb, var(--color-accent) 42%, var(--color-surface));
}
.section-note {
  grid-column: 2;
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}
@media (max-width: 599px) {
  .section-head { grid-template-columns: minmax(0, 1fr); }
  .section-note { grid-column: auto; }
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter);
}
.col-full { grid-column: 1 / -1; }
@media (min-width: 768px) {
  .grid-12 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .col-half { grid-column: span 4; }
  .col-side { grid-column: span 3; }
  .col-main { grid-column: span 5; }
}
@media (min-width: 1024px) {
  .grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .col-quarter { grid-column: span 3; }
  .col-third { grid-column: span 4; }
  .col-half { grid-column: span 6; }
  .col-two-thirds { grid-column: span 8; }
  .col-side { grid-column: span 3; }
  .col-main { grid-column: span 9; }
}

/* --------------------------------------------------------------------------
   6. 通用文字与标签
   -------------------------------------------------------------------------- */
.eyebrow,
.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.lead {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.prose {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}
.prose h2,
.prose h3 { color: var(--color-ink); margin-top: var(--space-6); }
.prose ul,
.prose ol { margin: 0 0 var(--space-3); padding-left: var(--space-3); }
.prose li { margin-bottom: var(--space-1); }
.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose strong { color: var(--color-ink); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}
.tag--accent {
  border-color: var(--color-accent);
  background-color: var(--color-highlight);
  color: var(--color-accent);
}

.note {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-soft);
  font-size: var(--text-sm);
  color: var(--color-ink);
}
.note--accent {
  border-left-color: var(--color-accent);
  background-color: var(--color-highlight);
}
.note p:last-child { margin-bottom: 0; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}

/* --------------------------------------------------------------------------
   7. 按钮 / 面包屑
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px 16px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  cursor: pointer;
  transition: transform .16s ease, border-color .16s ease, background-color .16s ease;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  border-color: var(--color-primary);
}
.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn-accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn-ghost { background-color: transparent; }
.btn-sm { padding: 6px 10px; font-size: var(--text-xs); }

.breadcrumb { padding-block: var(--space-3); }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}
.breadcrumb-list li { display: inline-flex; align-items: center; gap: var(--space-1); }
.breadcrumb-list a { color: var(--color-ink-soft); }
.breadcrumb-sep { color: var(--color-line); }
.breadcrumb-list [aria-current="page"] { color: var(--color-ink); }

/* --------------------------------------------------------------------------
   8. 资料卡
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: repeat(auto-fill, minmax(228px, 1fr));
}
.card-grid--tight { grid-template-columns: repeat(auto-fill, minmax(178px, 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--color-primary) 48%, var(--color-line));
  box-shadow: var(--shadow-2);
}
.card-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}
.card-cat {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.cat-tick {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-primary);
  transition: background-color .18s ease;
}
.cat-tick[data-cat="a"] { background-color: var(--color-primary); }
.cat-tick[data-cat="b"] { background-color: var(--color-accent); }
.cat-tick[data-cat="c"] { background-color: color-mix(in srgb, var(--color-accent) 50%, var(--color-primary)); }
.cat-tick[data-cat="d"] { background-color: var(--color-ink-muted); }
.cat-tick[data-cat="e"] { background-color: color-mix(in srgb, var(--color-primary) 62%, var(--color-ink)); }
.cat-tick[data-cat="f"] { background-color: color-mix(in srgb, var(--color-accent) 62%, var(--color-ink)); }
.card:hover .cat-tick { background-color: var(--color-accent); }

.card-title { margin: 0; font-size: var(--text-lg); }
.card-title a { color: var(--color-ink); }
.card-body {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.66;
  color: var(--color-ink-soft);
}
.card-foot {
  margin-top: auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* --------------------------------------------------------------------------
   9. 筛选条
   -------------------------------------------------------------------------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}
.filter-btn {
  padding: 6px 10px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}
.filter-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.filter-btn[aria-pressed="true"] {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.filter-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* --------------------------------------------------------------------------
   10. 深底数据条
   -------------------------------------------------------------------------- */
.data-bar {
  padding-block: var(--space-4);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}
.data-strip {
  display: grid;
  gap: var(--space-3) var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
}
.data-cell { min-width: 0; }
.data-label {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}
.data-value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-contrast-accent);
}
.data-bar a { color: var(--color-contrast-accent); }

/* --------------------------------------------------------------------------
   11. 表格
   -------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.data-table th {
  padding: var(--space-2);
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  background-color: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
  white-space: nowrap;
}
.data-table td {
  padding: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  color: var(--color-ink-soft);
}
.data-table tbody tr:nth-child(even) { background-color: var(--color-surface-alt); }
.data-table td.num,
.data-table th.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

/* --------------------------------------------------------------------------
   12. 锚点轨 / 图片展签框
   -------------------------------------------------------------------------- */
.anchor-rail {
  position: sticky;
  top: calc(var(--space-4) + var(--space-2));
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
}
.anchor-rail a {
  display: block;
  padding: 6px 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}
.anchor-rail a[aria-current="true"] {
  color: var(--color-accent);
  text-decoration: none;
}

.figure {
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  overflow: hidden;
}
.figure-media {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background-color: var(--color-surface-deep);
}
.figure-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure-media[data-overlay]::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}
.figure-tag {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  z-index: 1;
  padding: 2px 8px;
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
}
.figure-caption {
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* --------------------------------------------------------------------------
   13. 降级动效
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
  }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
}