/* =========================================================
   9博体育赛事 · 共享站点样式 /assets/site.css
   母题：夜场灯光下的战术板
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --ink-900: #071B2E;
  --ink-800: #0E2C4A;
  --paper: #F3EDE0;
  --paper-soft: rgba(243, 237, 224, .86);
  --paper-mid: rgba(243, 237, 224, .74);
  --cyan: #25E1CE;
  --cyan-deep: #0B5F58;
  --orange: #FF7A2F;
  --steel: #7C93A6;
  --green: #1E7A4C;
  --green-deep: #123B3C;
  --rule: #C7BFB0;
  --black: #0A1016;
  --plate: rgba(2, 8, 16, .55);

  --font-head: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Noto Sans Mono CJK SC", monospace;

  --shell-max: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --bw-1: 2px;
  --bw-2: 3px;
  --shadow-hard: 6px 6px 0 0 var(--plate);
  --shadow-hard-lg: 10px 10px 0 0 var(--plate);
  --ease-out: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: var(--ink-900);
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--ink-900);
  color: var(--paper-soft);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
ul, ol { margin: 0; padding: 0; }
p { margin: 0; }

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .55em;
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--paper);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.25rem, 1.4vw + .9rem, 1.5rem); }
h3 { font-size: 1.125rem; letter-spacing: -.01em; }
h4 { font-size: 1rem; }

strong { font-weight: 800; color: var(--paper); }

a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color 160ms var(--ease-out);
}
a:hover { color: var(--paper); }

code, kbd, samp, pre { font-family: var(--font-mono); font-size: .9em; }

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

/* ---------- 4. 焦点与可访问工具 ---------- */
:focus { outline: none; }

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 0;
}

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

.skip-link {
  position: absolute;
  top: -120px;
  left: 12px;
  z-index: 200;
  padding: 11px 18px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-decoration: none;
  border: var(--bw-2) solid var(--ink-900);
  box-shadow: 5px 5px 0 0 var(--orange);
  transition: top 180ms var(--ease-out);
}
.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
  color: var(--ink-900);
  outline-color: var(--paper);
}

/* ---------- 5. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(90deg, rgba(37, 225, 206, .05) 0 1px, transparent 1px 84px),
    linear-gradient(180deg, rgba(14, 44, 74, .55), rgba(7, 27, 46, 0) 70%);
  border-bottom: var(--bw-2) solid var(--cyan);
}

.header-shell {
  position: relative;
  z-index: 1;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  transition: padding 220ms var(--ease-out);
}

.site-header[data-compact] .header-shell { padding-top: 9px; padding-bottom: 9px; }

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  color: var(--paper);
  text-decoration: none;
}
.brand:hover { color: var(--paper); }

.brand-mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.3rem;
  line-height: 1;
  border: var(--bw-1) solid var(--ink-900);
  box-shadow: 3px 3px 0 0 var(--orange);
  transition: box-shadow 180ms var(--ease-out);
}
.brand:hover .brand-mark,
.brand:focus-visible .brand-mark { box-shadow: 5px 5px 0 0 var(--orange); }

.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }

.brand-line {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: .95rem;
  letter-spacing: -.01em;
  white-space: nowrap;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .1em;
  color: var(--steel);
  white-space: nowrap;
}
.site-header[data-compact] .brand-tag { display: none; }

/* 导航 */
.primary-nav {
  min-width: 0;
  justify-self: center;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  list-style: none;
}

.nav-item { display: block; }

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 11px;
  color: var(--paper-mid);
  font-size: .875rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: var(--bw-2) solid transparent;
  transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out), background-color 160ms var(--ease-out);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--paper);
  border-bottom-color: rgba(37, 225, 206, .5);
}
.nav-link[aria-current="page"] {
  color: var(--paper);
  border-bottom-color: var(--cyan);
  font-weight: 700;
}

.nav-index {
  font-family: var(--font-mono);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--steel);
  font-variant-numeric: tabular-nums;
}
.nav-link[aria-current="page"] .nav-index { color: var(--cyan); }

.nav-label { white-space: nowrap; }

/* 页头工具区 */
.header-utility {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-self: end;
}

.season-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border: var(--bw-1) solid var(--orange);
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  white-space: nowrap;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  animation: badgePulse 2.4s ease-out infinite;
}

@keyframes badgePulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 122, 47, .55); }
  70%  { box-shadow: 0 0 0 8px rgba(255, 122, 47, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 122, 47, 0); }
}

.utility-call {
  padding-bottom: 2px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .02em;
  text-decoration: none;
  border-bottom: var(--bw-1) dashed var(--steel);
  white-space: nowrap;
}
.utility-call:hover,
.utility-call:focus-visible { color: var(--cyan); border-bottom-color: var(--cyan); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: var(--bw-1) solid var(--steel);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  transition: border-color 160ms var(--ease-out), color 160ms var(--ease-out);
}
.nav-toggle:hover,
.nav-toggle:focus-visible { border-color: var(--cyan); color: var(--cyan); }

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}
.nav-toggle-bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 180ms var(--ease-out), opacity 180ms var(--ease-out);
}

.site-header[data-open] .nav-toggle { border-color: var(--cyan); color: var(--cyan); }
.site-header[data-open] .nav-toggle-bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle-bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 滚动进度 */
.scroll-meter {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  display: block;
  width: 100%;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 104px);
  color: var(--paper-soft);
  background-color: var(--ink-900);
  border-top: var(--bw-2) solid var(--cyan);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(135deg, rgba(30, 122, 76, .12) 0 2px, transparent 2px 13px),
    radial-gradient(circle at 84% 10%, rgba(37, 225, 206, .1), transparent 58%);
}

.footer-shell {
  position: relative;
  z-index: 1;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 72px) var(--gutter) clamp(28px, 4vw, 46px);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.5fr;
  gap: clamp(24px, 4vw, 48px);
}

.footer-col { min-width: 0; }

.footer-brand {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: -.01em;
  color: var(--paper);
}

.footer-tag {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--steel);
}

.footer-icp {
  display: inline-block;
  margin: 0;
  padding: 5px 10px;
  border: var(--bw-2) solid rgba(124, 147, 166, .5);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .04em;
  color: var(--steel);
}

.footer-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  list-style: none;
}

.footer-list a {
  color: var(--paper-soft);
  font-size: .9rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}
.footer-list a:hover,
.footer-list a:focus-visible { color: var(--cyan); border-bottom-color: var(--cyan); }

.footer-list--plain li {
  color: var(--paper-mid);
  font-size: .86rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.footer-note {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .04em;
  color: var(--steel);
}

.footer-legal {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(124, 147, 166, .3);
  background: rgba(2, 10, 20, .42);
}

.footer-legal-shell {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 18px var(--gutter) 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.footer-legal-line {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--steel);
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  list-style: none;
}

.footer-legal-links a {
  color: var(--paper-mid);
  font-size: .78rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}
.footer-legal-links a:hover,
.footer-legal-links a:focus-visible { color: var(--cyan); border-bottom-color: var(--cyan); }

/* ---------- 7. 容器与栅格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

#main-content {
  display: block;
  scroll-margin-top: 84px;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
}

.col-main  { grid-column: span 7; }
.col-aside { grid-column: span 3; }
.col-extra { grid-column: span 2; }
.col-half  { grid-column: span 6; }
.col-third { grid-column: span 4; }
.col-full  { grid-column: 1 / -1; }

/* ---------- 8. 面板与纸面 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--ink-800);
  border: var(--bw-2) solid var(--ink-800);
  color: var(--paper-soft);
}

.panel--outline { background: transparent; border-color: rgba(124, 147, 166, .45); }
.panel--signal  { border-color: var(--orange); }
.panel--youth   { background: var(--green-deep); border-color: var(--green); }

.paper {
  padding: clamp(20px, 3vw, 40px);
  background: var(--paper);
  color: var(--black);
  border: var(--bw-2) solid var(--black);
  box-shadow: var(--shadow-hard);
}
.paper h1, .paper h2, .paper h3, .paper h4, .paper h5, .paper h6 { color: var(--black); }
.paper strong { color: var(--black); }
.paper a { color: var(--cyan-deep); }
.paper a:hover,
.paper a:focus-visible { color: var(--black); }
.paper .tag { border-color: var(--rule); color: #4A5A66; }
.paper .tag--report { color: var(--cyan-deep); border-color: var(--cyan-deep); }
.paper .tag--round  { color: #B04A12; border-color: #B04A12; }
.paper .tag--youth,
.paper .tag--ticket { background: var(--green); color: var(--paper); border-color: var(--green); }
.paper .rule { background: var(--rule); }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-decoration: none;
  color: var(--paper);
  background: transparent;
  border: var(--bw-2) solid currentColor;
  box-shadow: 4px 4px 0 0 var(--plate);
  transition: box-shadow 160ms var(--ease-out), transform 160ms var(--ease-out),
              background-color 160ms var(--ease-out), color 160ms var(--ease-out),
              border-color 160ms var(--ease-out);
}
.btn:hover,
.btn:focus-visible {
  box-shadow: 7px 7px 0 0 var(--plate);
  transform: translate(-1px, -1px);
}
.btn:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 0 var(--plate); }

.btn--primary { background: var(--cyan); color: var(--ink-900); border-color: var(--ink-900); }
.btn--primary:hover,
.btn--primary:focus-visible { background: var(--cyan); color: var(--ink-900); }

.btn--signal { background: var(--orange); color: var(--ink-900); border-color: var(--ink-900); }
.btn--signal:hover,
.btn--signal:focus-visible { background: var(--orange); color: var(--ink-900); }

.btn--ghost { border-color: var(--steel); color: var(--paper); }
.btn--ghost:hover,
.btn--ghost:focus-visible { border-color: var(--cyan); color: var(--cyan); }

.btn--block { width: 100%; justify-content: space-between; }

.btn__arrow { font-family: var(--font-mono); opacity: .85; }

/* ---------- 10. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1.45;
  white-space: nowrap;
  color: var(--paper-mid);
  border: var(--bw-1) solid currentColor;
}

.tag--report  { color: var(--cyan); }
.tag--round   { color: var(--orange); }
.tag--injury  { color: var(--steel); }
.tag--referee { color: var(--steel); }
.tag--source  { color: rgba(243, 237, 224, .62); }
.tag--youth,
.tag--ticket  { background: var(--green); color: var(--paper); border-color: var(--green); }

/* ---------- 11. 面包屑与页头区 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--steel);
}
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: rgba(124, 147, 166, .6); }
.breadcrumb a { color: var(--steel); text-decoration: none; }
.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

.page-head {
  padding: clamp(36px, 6vw, 72px) 0 clamp(22px, 3vw, 38px);
  margin-bottom: clamp(28px, 4vw, 48px);
  border-bottom: var(--bw-2) solid rgba(37, 225, 206, .28);
}

.page-head__eyebrow {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-head__title { margin: 0 0 14px; }

.page-head__lede {
  max-width: 62ch;
  font-size: 1.02rem;
  color: var(--paper-mid);
}

/* ---------- 12. 长文与分隔 ---------- */
.prose { max-width: 72ch; }
.prose p { margin-bottom: 1.1em; }
.prose > p:last-child { margin-bottom: 0; }
.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose ul,
.prose ol { margin-bottom: 1.1em; padding-left: 1.3em; }
.prose li { margin-bottom: .4em; }

.rule {
  height: var(--bw-2);
  margin: clamp(28px, 4vw, 48px) 0;
  border: 0;
  background: rgba(124, 147, 166, .35);
}
.rule--signal { height: 3px; background: var(--orange); }
.rule--dashed {
  height: 0;
  background: none;
  border-top: var(--bw-1) dashed rgba(124, 147, 166, .5);
}

.index-num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}

/* ---------- 13. 分段控件 ---------- */
.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 3px;
  background: var(--ink-900);
  border: var(--bw-2) solid rgba(124, 147, 166, .5);
}

.segmented__tab {
  padding: 8px 14px;
  color: var(--paper-mid);
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .06em;
  background: transparent;
  border: 0;
  transition: background-color 160ms var(--ease-out), color 160ms var(--ease-out);
}
.segmented__tab:hover { color: var(--paper); }
.segmented__tab[aria-selected="true"] {
  background: var(--cyan);
  color: var(--ink-900);
}

.segmented__panel { padding-top: 20px; }
.segmented__panel[hidden] { display: none; }

/* ---------- 14. 过滤标签 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.filter-chip {
  padding: 6px 12px;
  color: var(--paper-mid);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  background: transparent;
  border: var(--bw-2) solid rgba(124, 147, 166, .5);
  transition: border-color 160ms var(--ease-out), color 160ms var(--ease-out), background-color 160ms var(--ease-out);
}
.filter-chip:hover,
.filter-chip:focus-visible { border-color: var(--cyan); color: var(--paper); }
.filter-chip.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
}

/* ---------- 15. 手风琴 ---------- */
.accordion {
  background: var(--ink-800);
  border: var(--bw-2) solid rgba(124, 147, 166, .4);
}

.accordion__item + .accordion__item { border-top: var(--bw-1) solid rgba(124, 147, 166, .3); }
.accordion__item[open] { border-left: var(--bw-2) solid var(--orange); }

.accordion__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  color: var(--paper);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}
.accordion__summary::-webkit-details-marker { display: none; }
.accordion__summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
}
.accordion__item[open] .accordion__summary::after { content: "–"; }

.accordion__body {
  padding: 0 18px 18px;
  color: var(--paper-mid);
  font-size: .94rem;
}

/* ---------- 16. 图片容器 ---------- */
.figure {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: var(--bw-2) solid var(--ink-800);
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(135deg, rgba(37, 225, 206, .07) 0 2px, transparent 2px 11px),
    radial-gradient(circle at 28% 18%, rgba(37, 225, 206, .16), transparent 62%);
  background-size: 100% 100%, 100% 100%;
  box-shadow: var(--shadow-hard);
}

.figure > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure--ratio-stadium { aspect-ratio: 21 / 9; }
.figure--ratio-wide    { aspect-ratio: 16 / 9; }
.figure--ratio-tall    { aspect-ratio: 3 / 4; }
.figure--ratio-square  { aspect-ratio: 1 / 1; }

.figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 12px;
  background: rgba(7, 27, 46, .86);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .06em;
}

/* ---------- 17. 进场动效 ---------- */
.is-reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
}
.is-reveal-ready [data-reveal].is-inview {
  opacity: 1;
  transform: none;
}

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .utility-call { display: none; }
  .nav-link { padding: 7px 8px; }
}

@media (max-width: 1024px) {
  .col-main  { grid-column: span 8; }
  .col-aside { grid-column: span 4; }
  .col-extra { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .header-shell {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }
  .brand-tag { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header[data-compact] .header-shell { padding-top: 14px; padding-bottom: 14px; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    justify-self: stretch;
    padding: 10px var(--gutter) 22px;
    background-color: var(--ink-900);
    background-image: repeating-linear-gradient(90deg, rgba(37, 225, 206, .05) 0 1px, transparent 1px 84px);
    border-top: var(--bw-2) solid var(--cyan);
    border-bottom: var(--bw-2) solid var(--cyan);
    box-shadow: 0 14px 0 0 rgba(2, 8, 16, .45);
    max-height: min(72vh, 520px);
    overflow-y: auto;
  }
  .site-header[data-open] .primary-nav {
    display: block;
    animation: navDrop 200ms var(--ease-out);
  }

  @keyframes navDrop {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-link {
    width: 100%;
    gap: 12px;
    padding: 14px 4px;
    font-size: .95rem;
    border-bottom: 1px solid rgba(243, 237, 224, .12);
    border-left: var(--bw-2) solid transparent;
    border-bottom-width: 1px;
  }
  .nav-link:hover,
  .nav-link:focus-visible { border-bottom-color: rgba(243, 237, 224, .12); border-left-color: rgba(37, 225, 206, .5); }
  .nav-link[aria-current="page"] {
    border-bottom-color: rgba(243, 237, 224, .12);
    border-left-color: var(--cyan);
  }
  .nav-index { font-size: .68rem; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .grid-12 { gap: 18px; }
  .col-main,
  .col-aside,
  .col-half,
  .col-third { grid-column: 1 / -1; }
  #main-content { scroll-margin-top: 76px; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal-shell { flex-direction: column; align-items: flex-start; }
  .segmented { width: 100%; }
  .segmented__tab { flex: 1 1 auto; text-align: center; }
}

/* 打印：法律与长文页侧边锚点目录友好 */
@media print {
  .site-header,
  .site-footer,
  .scroll-meter,
  .nav-toggle { display: none !important; }
  body { background: #fff; color: #000; }
  .paper { box-shadow: none; border-color: #000; }
}

/* ---------- 19. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  .is-reveal-ready [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .badge-dot { animation: none !important; }
  .site-header[data-compact] .header-shell { padding-top: 12px; padding-bottom: 12px; }
}