:root {
  --color-surface: #fcfdfc;
  --color-surface-alt: #f2f3f2;
  --color-surface-deep: #e3e5e3;
  --color-ink: #2f372f;
  --color-ink-soft: #586559;
  --color-ink-muted: #717f72;
  --color-line: #d7d9d7;
  --color-primary: #0d8715;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #dbecdc;
  --color-accent: #dd0e90;
  --color-accent-ink: #ffffff;
  --color-highlight: #f6d2e9;
  --color-focus: #d90289;
  --color-contrast-surface: #0c1a0d;
  --color-contrast-ink: #e4e7e4;
  --color-contrast-line: #3c473c;
  --color-contrast-accent: #f0149e;
  --overlay-scrim: linear-gradient(180deg, rgba(12, 26, 13, 0.35) 0%, rgba(12, 26, 13, 0.72) 55%, rgba(12, 26, 13, 0.92) 100%);
  --font-heading: "Source Han Sans SC", "Noto Sans SC", SimHei, "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 11.0px;
  --text-sm: 14.7px;
  --text-base: 17px;
  --text-lg: 22.7px;
  --text-xl: 30.2px;
  --text-2xl: 40.3px;
  --text-3xl: 53.7px;
  --text-4xl: 71.5px;
  --text-display: clamp(59px, 12.2vw, 156px);
  --text-figure: clamp(49px, 8.8vw, 112px);
  --weight-heading: 715;
  --weight-body: 400;
  --leading-body: 1.74;
  --leading-heading: 1.15;
  --tracking-heading: -0.007em;
  --radius-sm: 1px;
  --radius-md: 1px;
  --radius-lg: 1px;
  --radius-pill: 1px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1140px;
  --measure: 70ch;
  --gutter: 32px;
  --section-y: 76px;
  --section-y-lg: 106px;
}

/* ============================================================
   Z9赛场 · 共享样式表  /assets/site.css
   双色海报体系：全站仅两个色相，边界靠色差成立
   ============================================================ */

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

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

body {
  margin: 0;
  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);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

p { margin: 0 0 var(--space-2); }
p:last-child { margin-bottom: 0; }

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

a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

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

/* ---------- 容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: 0;
  z-index: 120;
  transform: translateY(-160%);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  transition: transform 160ms linear;
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: var(--color-surface);
}

.header-upper {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.header-upper__inner {
  display: flex;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  min-height: 44px;
  padding-block: 6px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}
.brand__mark {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
}
.brand__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
}
.brand__tag {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

.header-status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
  white-space: nowrap;
}
.header-status__dot {
  width: 7px;
  height: 7px;
  background-color: var(--color-contrast-accent);
  border-radius: var(--radius-pill);
}
.header-status:hover { color: var(--color-contrast-accent); }
.header-status .num { color: var(--color-contrast-accent); }

.header-cta {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background-color 160ms linear, color 160ms linear;
}
.header-cta:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.header-lower {
  background-color: var(--color-surface);
  color: var(--color-ink);
}
.header-lower__inner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 58px;
}

.primary-nav__list {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 2px;
}
.primary-nav a {
  display: flex;
  align-items: center;
  min-height: 58px;
  padding: 0 var(--space-2);
  background-color: transparent;
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: background-color 160ms linear, color 160ms linear;
}
.primary-nav a:hover,
.primary-nav a:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.primary-nav a[aria-current="page"] {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 14px;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
}
.nav-toggle:hover { background-color: var(--color-accent); }
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 16px;
  height: 2px;
  background-color: currentColor;
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.site-footer::before {
  content: "";
  display: block;
  height: 5px;
  background-color: var(--color-primary);
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-primary) 0 18px,
    var(--color-contrast-surface) 18px 26px
  );
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-4);
  padding-block: var(--space-3);
  font-size: var(--text-xs);
}
.footer-brand {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  color: var(--color-contrast-ink);
}
.footer-year,
.footer-filing,
.footer-contact {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  color: var(--color-contrast-ink);
  opacity: 0.66;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  margin-left: auto;
}
.footer-links a {
  color: var(--color-contrast-ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--color-contrast-line);
  text-underline-offset: 4px;
  transition: color 160ms linear, text-decoration-color 160ms linear;
}
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-contrast-accent);
  text-decoration-color: var(--color-contrast-accent);
}

/* ---------- 章节与色块反转 ---------- */
.section {
  padding-block: var(--section-y);
  background-color: var(--color-surface);
  color: var(--color-ink);
}
.section--lg { padding-block: var(--section-y-lg); }
.section--tight { padding-block: var(--space-6); }
.section--alt { background-color: var(--color-surface-alt); }
.section--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.section--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.section--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

/* ---------- 编号与刻度分隔 ---------- */
.ruler {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.ruler__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  white-space: nowrap;
}
.ruler__ticks {
  flex: 1 1 auto;
  height: 9px;
  opacity: 0.55;
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-ink-muted) 0 1px,
    transparent 1px 14px
  );
}
.section--deep .ruler__num { color: var(--color-contrast-accent); }
.section--deep .ruler__ticks {
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-contrast-line) 0 1px,
    transparent 1px 14px
  );
}
.section--primary .ruler__num,
.section--accent .ruler__num { color: currentColor; opacity: 0.85; }
.section--primary .ruler__ticks,
.section--accent .ruler__ticks {
  background-image: repeating-linear-gradient(
    90deg,
    currentColor 0 1px,
    transparent 1px 14px
  );
}

/* ---------- 展览标签 ---------- */
.plaque {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-deep);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.plaque--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.plaque--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.section--deep .plaque {
  background-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.section--deep .plaque--accent {
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 var(--space-3);
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
  transition: background-color 180ms linear, color 180ms linear;
}
.btn:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn--accent:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn--quiet {
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
}
.btn--quiet:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.section--deep .btn--quiet {
  background-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.section--deep .btn--quiet:hover {
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.btn--block { width: 100%; }

/* ---------- 主题筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}
.filter-chip {
  min-height: 36px;
  padding: 6px 14px;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: background-color 180ms linear, color 180ms linear;
}
.filter-chip:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.filter-chip[aria-pressed="true"] {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.section--deep .filter-chip {
  background-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.section--deep .filter-chip:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.section--deep .filter-chip[aria-pressed="true"] {
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}
.section--deep .filter-count { color: var(--color-contrast-ink); opacity: 0.7; }
.filter-empty {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-deep);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}
.section--deep .filter-empty {
  background-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.filter-empty[hidden] { display: none; }

/* ---------- 记录行 ---------- */
.data-list { display: block; }
.data-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: transparent;
  border-radius: var(--radius-sm);
  transition: background-color 180ms linear;
}
.data-row[hidden] { display: none; }
.data-row:hover { background-color: var(--color-primary-soft); }
.section--deep .data-row:hover { background-color: var(--color-contrast-line); }
.data-row.is-hit { background-color: var(--color-highlight); color: var(--color-ink); }
.section--deep .data-row.is-hit {
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.data-row__id {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}
.section--deep .data-row__id { color: var(--color-contrast-accent); }
.data-row.is-hit .data-row__id { color: inherit; }
.data-row__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
}
.data-row__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}
.section--deep .data-row__meta { color: var(--color-contrast-ink); opacity: 0.7; }
.data-row.is-hit .data-row__meta { color: inherit; opacity: 0.8; }

/* ---------- 折叠 ---------- */
.collapse {
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.collapse + .collapse { margin-top: var(--space-1); }
.collapse > summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  transition: background-color 160ms linear, color 160ms linear;
}
.collapse > summary::-webkit-details-marker { display: none; }
.collapse > summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}
.collapse[open] > summary::after { content: "－"; }
.collapse > summary:hover {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.collapse > summary:hover::after { color: var(--color-primary-ink); }
.collapse__body {
  padding: var(--space-2) var(--space-3) var(--space-3);
  background-color: var(--color-surface);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}
.collapse[open] .collapse__body { animation: collapse-in 200ms linear; }
@keyframes collapse-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-deep);
}
.media-frame > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--std { aspect-ratio: 4 / 3; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--pending {
  background-image: repeating-linear-gradient(
    135deg,
    var(--color-primary) 0 10px,
    var(--color-accent) 10px 20px
  );
}
.media-frame--grid {
  background-color: var(--color-contrast-surface);
  background-image:
    repeating-linear-gradient(90deg, var(--color-contrast-line) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(0deg, var(--color-contrast-line) 0 1px, transparent 1px 46px);
}
.media-frame__scrim {
  position: absolute;
  inset: 0;
  background-image: var(--overlay-scrim);
  pointer-events: none;
}
.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  margin: 0;
  padding: var(--space-2) var(--space-3);
  color: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb li + li::before {
  content: "›";
  color: var(--color-accent);
}
.breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: color 160ms linear, text-decoration-color 160ms linear;
}
.breadcrumb a:hover {
  color: var(--color-ink);
  text-decoration-color: var(--color-accent);
}
.breadcrumb [aria-current="page"] {
  color: var(--color-ink);
  font-weight: 700;
}
.section--deep .breadcrumb { color: var(--color-contrast-ink); opacity: 0.72; }
.section--deep .breadcrumb a { color: var(--color-contrast-ink); }

/* ---------- 正文 ---------- */
.prose {
  max-width: var(--measure);
  font-size: var(--text-base);
}
.prose > * + * { margin-top: var(--space-3); }
.prose h2 { font-size: var(--text-xl); }
.prose h3 { font-size: var(--text-lg); }
.prose p { margin: 0; }
.prose ul,
.prose ol {
  padding-left: 1.4em;
  list-style: disc;
}
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 4px; }
.prose strong { font-weight: var(--weight-heading); }
.prose code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-surface-deep);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
}
.prose blockquote {
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-surface-alt);
  color: var(--color-ink-soft);
}
.section--deep .prose { color: var(--color-contrast-ink); }

/* ---------- 栅格 ---------- */
.grid {
  display: grid;
  gap: var(--gutter);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid--sidebar {
  grid-template-columns: 128px minmax(0, 1fr);
  align-items: start;
}
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }

/* ---------- 赛季时间轴 ---------- */
.season-rail {
  position: sticky;
  top: 124px;
  align-self: start;
}
.season-rail__label {
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-accent);
}
.season-rail__list { display: block; }
.season-rail__list li + li { margin-top: 2px; }
.season-rail__btn {
  display: block;
  width: 100%;
  padding: 5px 8px;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: transparent;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-align: left;
  transition: background-color 160ms linear, color 160ms linear;
}
.season-rail__btn:hover {
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
}
.season-rail__btn[aria-pressed="true"] {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.section--deep .season-rail__btn { color: var(--color-contrast-ink); }
.section--deep .season-rail__btn:hover { background-color: var(--color-contrast-line); }
.section--deep .season-rail__btn[aria-pressed="true"] {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ---------- 数字口径浮层 ---------- */
.figure-pop {
  position: relative;
  display: inline-flex;
  align-items: baseline;
}
.figure-pop__trigger {
  border: 0;
  border-bottom: 3px solid var(--color-accent);
  border-radius: 0;
  padding: 0 0 2px;
  background: none;
  font-family: var(--font-mono);
  font-weight: 700;
  color: inherit;
}
.section--deep .figure-pop__trigger { border-bottom-color: var(--color-contrast-accent); }
.figure-pop__panel {
  display: none;
  position: absolute;
  z-index: 40;
  left: 0;
  top: calc(100% + 8px);
  width: max-content;
  max-width: min(280px, 72vw);
  padding: var(--space-2);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0;
  text-align: left;
  white-space: normal;
}
.figure-pop.is-open .figure-pop__panel { display: block; }

/* ---------- 滚动进度与返回顶部 ---------- */
.reading-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 110;
  pointer-events: none;
  background-color: transparent;
}
.reading-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background-color: var(--color-accent);
}
.to-top {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 100;
  min-height: 42px;
  padding: 0 14px;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms linear, visibility 180ms linear, background-color 180ms linear;
}
.to-top.is-visible { opacity: 1; visibility: visible; }
.to-top:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

/* ---------- 显现 ---------- */
.js-motion .reveal { opacity: 0; }
.js-motion .reveal.is-in {
  opacity: 1;
  transition: opacity 220ms linear;
}

/* ---------- 工具类 ---------- */
.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.mark {
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 4px;
}
.section--deep .mark,
.section--primary .mark,
.section--accent .mark { text-decoration-color: currentColor; }
.hl {
  background-color: var(--color-highlight);
  color: var(--color-ink);
  padding: 0 0.18em;
}
.section--deep .hl {
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.section--deep .eyebrow { color: var(--color-contrast-accent); }
.section--primary .eyebrow,
.section--accent .eyebrow { color: currentColor; opacity: 0.85; }
.lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-ink-soft);
}
.section--deep .lede {
  color: var(--color-contrast-ink);
  opacity: 0.84;
}
.section--primary .lede,
.section--accent .lede { color: currentColor; }
.stack > * + * { margin-top: var(--space-3); }
.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .grid--6 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--sidebar { grid-template-columns: 104px minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .header-upper__inner { min-height: 42px; }
  .brand__tag { display: none; }

  .header-lower__inner {
    flex-wrap: wrap;
    padding-block: 8px;
    min-height: 0;
  }
  .nav-toggle { display: inline-flex; }
  .primary-nav { flex: 1 0 100%; }
  .primary-nav__list {
    display: none;
    flex-direction: column;
    gap: 2px;
    padding-top: var(--space-1);
  }
  .primary-nav[data-open] .primary-nav__list { display: flex; }
  .primary-nav a { min-height: 46px; }

  .grid--3,
  .grid--6 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--sidebar { grid-template-columns: minmax(0, 1fr); }
  .span-3,
  .span-4 { grid-column: span 2; }

  .season-rail {
    position: static;
    margin-bottom: var(--space-3);
  }
  .season-rail__label { margin-bottom: var(--space-1); }
  .season-rail__list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }
  .season-rail__list li + li { margin-top: 0; }
  .season-rail__btn {
    width: auto;
    padding: 5px 12px;
  }
}

@media (max-width: 640px) {
  .shell { padding-inline: var(--space-2); }
  .section { padding-block: var(--space-6); }
  .section--lg { padding-block: var(--space-8); }

  .grid--2,
  .grid--3,
  .grid--6 { grid-template-columns: minmax(0, 1fr); }
  .span-2,
  .span-3,
  .span-4,
  .span-6 { grid-column: auto; }

  .data-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: var(--space-2);
  }
  .data-row__meta { white-space: normal; }

  .filter-count { margin-left: 0; flex-basis: 100%; }

  .site-footer__inner { gap: 6px var(--space-2); }
  .footer-links { margin-left: 0; flex-basis: 100%; }

  .to-top { right: var(--space-2); bottom: var(--space-2); }
  .figure-pop__panel { left: 0; right: auto; }
}

@media (max-width: 520px) {
  .header-status { display: none; }
  .header-cta { margin-left: auto; }
}

/* ---------- 无障碍：减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js-motion .reveal { opacity: 1; }
}