/* ==========================================================================
   bet365赛事 · 共享样式表 /assets/site.css
   设计母题：夜草球场 × 技术蓝图 —— 坐标、刻度、索引与硬边阴影
   ========================================================================== */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, dl, dd, figure, blockquote, fieldset {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

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

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

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

table { border-collapse: collapse; }

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 夜草球场色板 */
  --pitch: #06140F;        /* 夜草底色 60% */
  --ink: #0B2018;          /* 边线深墨 13% */
  --grid: #1C4437;         /* 蓝图格线 6% */
  --cyan: #3DFFD1;         /* 荧光青 9% */
  --cyan-soft: #8CF3DC;    /* 浅青 3% */
  --amber: #FFB948;        /* 琥珀判罚 4% */
  --red: #FF3B47;          /* 警示红 ≤2% */
  --chalk: #EFFBF6;        /* 粉笔白 2% */
  --mist: #8FA9A0;         /* 雾灰绿 1% */
  --paper: #DDE7E2;        /* 浅色稿纸 ≤1% */
  --ink-abyss: #04120C;

  /* 用量化透明度 */
  --grid-soft: rgba(28, 68, 55, 0.42);
  --grid-faint: rgba(28, 68, 55, 0.22);
  --cyan-12: rgba(61, 255, 209, 0.12);
  --cyan-30: rgba(61, 255, 209, 0.30);
  --amber-20: rgba(255, 185, 72, 0.20);
  --red-10: rgba(255, 59, 71, 0.10);
  --shadow-hard: 8px 8px 0 rgba(0, 0, 0, 0.5);
  --shadow-soft: 4px 4px 0 rgba(0, 0, 0, 0.45);

  /* 尺寸与节奏 */
  --shell: 1240px;
  --gutter: clamp(16px, 3.2vw, 44px);
  --line-hair: 1px;
  --block: clamp(56px, 8vw, 120px);

  /* 字族：窄体记分牌 / 等宽数据 / 中文正文 */
  --font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
                  "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", sans-serif;
  --font-data: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  /* 动效：硬缓动，哨声前的屏息感 */
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --t-fast: 0.22s;
  --t-base: 0.36s;
  --t-slow: 0.52s;
}

/* ---------- 3. 中文排版基底 ---------- */
body {
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.01em;
  background-color: var(--pitch);
  background-image:
    linear-gradient(to right, var(--grid-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-faint) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: center top;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: condensed;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

p { max-width: 38em; }

strong, b { font-weight: 700; color: var(--chalk); }

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

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

/* ---------- 4. 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.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;
}

.bp-grid {
  position: relative;
  background-image:
    linear-gradient(to right, var(--grid-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-soft) 1px, transparent 1px);
  background-size: 64px 64px;
}

.grid-split {
  display: grid;
  grid-template-columns: 5fr 3fr;
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

.grid-split--wide { grid-template-columns: 7fr 2fr; }

.section {
  position: relative;
  padding-block: var(--block);
}

.section--ink { background-color: var(--ink); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(28px, 4vw, 52px);
  border-bottom: var(--line-hair) solid var(--grid);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 800;
  font-stretch: condensed;
  font-style: normal;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--chalk);
}

.section__note {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.divider {
  height: var(--line-hair);
  background: var(--grid);
  border: 0;
  margin-block: clamp(28px, 4vw, 56px);
}

/* ---------- 5. 跳至主内容 ---------- */
.skip-link {
  position: absolute;
  top: -72px;
  left: 12px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--cyan);
  color: var(--ink-abyss);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.08em;
  border: 2px solid var(--ink-abyss);
  transition: top var(--t-fast) var(--ease);
}

.skip-link:focus {
  top: 12px;
  outline-offset: 4px;
}

/* ---------- 6. 头部：双层信息结构 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(6, 20, 15, 0.94);
  border-bottom: var(--line-hair) solid var(--grid);
}

@supports (backdrop-filter: blur(6px)) {
  .site-header { backdrop-filter: blur(10px); }
}

/* 上层：品牌说明 + 校对状态 */
.header-upper {
  max-height: 140px;
  overflow: hidden;
  background: var(--ink);
  border-bottom: var(--line-hair) solid var(--grid);
  opacity: 1;
  transition: max-height var(--t-base) var(--ease),
              opacity var(--t-fast) var(--ease),
              border-color var(--t-fast) linear;
}

.site-header[data-condensed="true"] .header-upper {
  max-height: 0;
  opacity: 0;
  border-bottom-color: transparent;
}

.header-upper__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 66px;
  padding-block: 10px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}

.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  font-stretch: condensed;
  letter-spacing: -0.01em;
  color: var(--chalk);
  transform: skewX(-2deg);
  transition: color var(--t-fast) var(--ease);
}

.brand__mark {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  background: var(--cyan);
  box-shadow: 4px 4px 0 var(--amber);
  flex: none;
}

.brand__link:hover { color: var(--cyan); }

.brand__tagline {
  max-width: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
  opacity: 0.82;
  white-space: nowrap;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
}

.header-meta__state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  display: block;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--cyan-12);
}

.header-meta__batch {
  padding-left: 22px;
  border-left: var(--line-hair) solid var(--grid);
}

.header-meta__value {
  margin-left: 8px;
  color: var(--amber);
  font-weight: 400;
  letter-spacing: 0.06em;
}

/* 下层：刻度式主导航 */
.header-lower__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 54px;
}

.site-nav { display: flex; min-width: 0; }

.site-nav__list {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
}

.site-nav__item {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-nav__item + .site-nav__item::before {
  content: "";
  width: var(--line-hair);
  height: 13px;
  background: var(--grid);
  flex: none;
}

.site-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 16px 16px;
  font-size: 14px;
  color: var(--mist);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.site-nav__num {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--grid);
  transition: color var(--t-fast) var(--ease);
}

.site-nav__link:hover {
  color: var(--chalk);
  background-color: var(--cyan-12);
}

.site-nav__link:hover .site-nav__num { color: var(--cyan-soft); }

.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  background-color: var(--cyan-12);
}

.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 7px;
  height: 2px;
  background: var(--cyan);
}

.site-nav__link[aria-current="page"] .site-nav__num {
  color: var(--amber);
}

.site-nav__link[aria-current="page"] .site-nav__num::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  background: var(--amber);
  vertical-align: middle;
  transform: translateY(-1px);
}

.header-index-link {
  flex: none;
  padding: 8px 14px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  border: var(--line-hair) solid var(--grid);
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}

.header-index-link:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  box-shadow: var(--shadow-soft);
  transform: translate(-2px, -2px);
}

/* 滚动进度：即时回放的时间条 */
.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.12s linear;
}

/* 移动导航开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: var(--line-hair) solid var(--grid);
  color: var(--cyan);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: none;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--cyan);
  transition: transform var(--t-fast) var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] {
  border-color: var(--cyan);
  background-color: var(--cyan-12);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  transform: translateY(-5px) rotate(-45deg);
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--block);
  padding-top: clamp(40px, 6vw, 76px);
  background-color: var(--ink);
  border-top: var(--line-hair) solid var(--grid);
  background-image:
    linear-gradient(to right, var(--grid-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-faint) 1px, transparent 1px);
  background-size: 64px 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr;
  gap: clamp(28px, 4vw, 64px);
  padding-bottom: clamp(32px, 5vw, 60px);
}

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

.footer-brand {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  font-stretch: condensed;
  letter-spacing: -0.01em;
  color: var(--chalk);
  transform: skewX(-2deg);
  border-bottom: 2px solid var(--cyan);
  padding-bottom: 4px;
  transition: color var(--t-fast) var(--ease);
}

.footer-brand:hover { color: var(--cyan); }

.footer-brand__note {
  max-width: none;
  margin-top: 14px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
  opacity: 0.78;
}

.footer-icp,
.footer-copy {
  max-width: 30em;
  margin-top: 12px;
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--mist);
  opacity: 0.72;
}

.footer-title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  font-size: 13px;
  font-weight: 700;
  font-stretch: normal;
  letter-spacing: 0.18em;
  color: var(--cyan-soft);
  border-bottom: var(--line-hair) solid var(--grid);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 20px;
}

.footer-links a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--mist);
  border-bottom: var(--line-hair) solid transparent;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.footer-links a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.footer-contact {
  display: grid;
  gap: 12px;
}

.footer-contact__item {
  display: grid;
  grid-template-columns: 5.4em minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.footer-contact__label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--grid);
  filter: brightness(1.9);
}

.footer-contact__value {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--chalk);
  word-break: break-word;
}

.footer-errata {
  max-width: 34em;
  margin-top: 18px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--mist);
  opacity: 0.72;
}

.footer-errata a {
  color: var(--cyan-soft);
  border-bottom: var(--line-hair) solid var(--cyan-30);
  transition: color var(--t-fast) var(--ease);
}

.footer-errata a:hover { color: var(--cyan); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 18px 22px;
  border-top: var(--line-hair) dashed var(--grid);
}

.footer-region {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
  opacity: 0.5;
}

.footer-bottom__note {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  opacity: 0.5;
}

/* ---------- 8. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  background: transparent;
  border: 2px solid var(--cyan);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
  background-color: var(--cyan-12);
}

.btn:active { transform: translate(0, 0); box-shadow: var(--shadow-soft); }

.btn--primary {
  background-color: var(--cyan);
  color: var(--ink-abyss);
}

.btn--primary:hover { background-color: var(--cyan-soft); }

.btn--amber {
  color: var(--amber);
  border-color: var(--amber);
}

.btn--amber:hover {
  background-color: var(--amber-20);
  box-shadow: var(--shadow-hard);
}

.btn--ghost {
  color: var(--mist);
  border-color: var(--grid);
}

.btn--ghost:hover {
  color: var(--chalk);
  background-color: rgba(143, 169, 160, 0.08);
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

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

.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumb li + li::before {
  content: "/";
  color: var(--grid);
  filter: brightness(1.9);
}

.breadcrumb a {
  color: var(--mist);
  transition: color var(--t-fast) var(--ease);
}

.breadcrumb a:hover { color: var(--cyan); }

.breadcrumb [aria-current="page"] { color: var(--cyan-soft); }

/* ---------- 10. 正文容器 ---------- */
.prose {
  max-width: 38em;
  color: var(--chalk);
  font-size: 16px;
  line-height: 1.9;
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  margin-top: 2em;
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--chalk);
}

.prose h3 {
  margin-top: 1.6em;
  font-size: 18px;
  color: var(--cyan-soft);
}

.prose ul, .prose ol {
  padding-left: 1.4em;
  color: var(--mist);
}

.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }

.prose a {
  color: var(--cyan);
  border-bottom: var(--line-hair) solid var(--cyan-30);
}

.prose a:hover { border-bottom-color: var(--cyan); }

.prose--paper {
  max-width: none;
  padding: clamp(24px, 4vw, 48px);
  background: var(--paper);
  color: var(--ink-abyss);
  border-left: 4px solid var(--amber);
}

.prose--paper h2,
.prose--paper h3,
.prose--paper strong { color: #06140F; }

.prose--paper ul,
.prose--paper ol { color: #23443A; }

.prose--paper a {
  color: #0B4F3C;
  border-bottom-color: rgba(11, 79, 60, 0.5);
}

/* ---------- 11. 粗边框交互窗口 ---------- */
.frame {
  position: relative;
  background-color: rgba(11, 32, 24, 0.88);
  border: 2px solid var(--cyan);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.5);
}

.frame__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 10px 16px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-soft);
  border-bottom: var(--line-hair) solid var(--grid);
  background-color: rgba(6, 20, 15, 0.6);
}

.frame__body { padding: clamp(18px, 3vw, 32px); }

/* ---------- 12. 纵向时间轴 ---------- */
.rail {
  position: relative;
  padding-left: 30px;
}

.rail::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: var(--line-hair);
  background: var(--grid);
}

.rail__item {
  position: relative;
  padding-bottom: clamp(20px, 3vw, 34px);
}

.rail__dot {
  position: absolute;
  left: -30px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--pitch);
  border: 2px solid var(--grid);
  transition: border-color var(--t-base) var(--ease),
              background-color var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease);
}

.rail__item[data-active="true"] .rail__dot {
  border-color: var(--cyan);
  background-color: var(--cyan);
  box-shadow: 0 0 0 4px var(--cyan-12);
}

.rail__item[data-flag="amber"] .rail__dot { border-color: var(--amber); }
.rail__item[data-flag="red"] .rail__dot { border-color: var(--red); }
.rail__item[data-flag="red"][data-active="true"] .rail__dot { background-color: var(--red); }

.rail__time {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.rail__item[data-active="true"] .rail__time { color: var(--cyan-soft); }

.rail__body { margin-top: 6px; }

/* ---------- 13. 索引式折叠组 ---------- */
.index-group {
  border-bottom: var(--line-hair) solid var(--grid);
}

.index-group__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 0;
  font-size: 17px;
  color: var(--chalk);
  cursor: pointer;
  list-style: none;
  transition: color var(--t-fast) var(--ease);
}

.index-group__summary::-webkit-details-marker { display: none; }

.index-group__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 16px;
  color: var(--cyan);
}

.index-group[open] .index-group__summary::after { content: "–"; }

.index-group__summary:hover { color: var(--cyan); }

.index-group[open] .index-group__summary { color: var(--cyan); }

.index-group__no {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
  flex: none;
}

.index-group__body {
  padding: 0 0 24px 34px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 14. 数据焦点 ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.stat__value {
  font-family: var(--font-display);
  font-size: clamp(44px, 7vw, 88px);
  font-weight: 800;
  font-stretch: condensed;
  font-variant-numeric: tabular-nums;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--cyan);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.stat--breakout .stat__value {
  font-size: clamp(72px, 15vw, 190px);
  color: var(--chalk);
  text-shadow: 6px 6px 0 var(--cyan-30);
}

.stat__unit {
  font-family: var(--font-data);
  font-size: clamp(13px, 1.4vw, 18px);
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--mist);
  margin-left: 8px;
}

.stat__label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.stat--amber .stat__value { color: var(--amber); }

/* ---------- 15. 状态标记 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  border: var(--line-hair) solid var(--grid);
}

.tag--cyan {
  color: var(--cyan);
  border-color: var(--cyan-30);
  background-color: var(--cyan-12);
}

.tag--amber {
  color: var(--amber);
  border-color: var(--amber-20);
}

.tag--red {
  color: var(--red);
  border-color: rgba(255, 59, 71, 0.55);
  background-color: var(--red-10);
}

/* ---------- 16. 注释 ---------- */
.anno {
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.14em;
  color: var(--mist);
  opacity: 0.72;
}

.anno--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.34em;
  max-height: 22em;
}

/* ---------- 17. 口径切换按钮组 ---------- */
.switch {
  display: inline-flex;
  flex-wrap: wrap;
  border: var(--line-hair) solid var(--grid);
}

.switch__btn {
  padding: 11px 20px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  cursor: pointer;
  border-right: var(--line-hair) solid var(--grid);
  transition: color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.switch__btn:last-child { border-right: 0; }

.switch__btn:hover { color: var(--chalk); background-color: var(--cyan-12); }

.switch__btn[aria-selected="true"] {
  color: var(--ink-abyss);
  background-color: var(--cyan);
}

.switch__panel[hidden] { display: none; }

/* ---------- 18. 影像容器基础规则 ---------- */
.figure {
  position: relative;
  background-color: var(--ink);
  border: 2px solid var(--grid);
  box-shadow: var(--shadow-hard);
}

.figure__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 30% 15%, rgba(61, 255, 209, 0.14), transparent 60%),
    linear-gradient(160deg, #0B2018 0%, #06140F 100%);
}

.figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.08) brightness(0.86);
}

.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(61, 255, 209, 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(61, 255, 209, 0.14) 1px, transparent 1px);
  background-size: 48px 48px;
  mix-blend-mode: screen;
}

.figure__caption {
  padding: 12px 16px;
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.08em;
  color: var(--mist);
  border-top: var(--line-hair) solid var(--grid);
}

.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure--portrait .figure__media { aspect-ratio: 3 / 4; }
.figure--square .figure__media { aspect-ratio: 1 / 1; }

/* ---------- 19. 显现与计数 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-slow) var(--ease),
              transform var(--t-slow) var(--ease);
}

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

/* ---------- 20. 响应式 ---------- */
@media (max-width: 1100px) {
  .grid-split,
  .grid-split--wide { grid-template-columns: 1fr; }

  .site-nav__link { padding-inline: 12px; font-size: 13px; }
  .site-nav__num { display: none; }
  .header-meta__batch { display: none; }
}

@media (max-width: 880px) {
  body { background-size: 64px 64px; }

  .header-upper__inner { min-height: 58px; }

  .brand__tagline { display: none; }

  .nav-toggle { display: inline-flex; }

  .header-lower__inner {
    flex-wrap: wrap;
    justify-content: space-between;
    padding-block: 10px;
  }

  .site-nav {
    display: none;
    order: 3;
    width: 100%;
    margin-top: 10px;
    border-top: var(--line-hair) solid var(--grid);
  }

  .site-nav[data-open="true"] { display: block; }

  .site-nav__list {
    display: block;
    max-height: min(62vh, 460px);
    overflow-y: auto;
  }

  .site-nav__item {
    display: block;
    border-bottom: var(--line-hair) solid var(--grid-faint);
  }

  .site-nav__item + .site-nav__item::before { display: none; }

  .site-nav__link {
    padding: 15px 6px 15px 22px;
    font-size: 15px;
  }

  .site-nav__link::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 50%;
    width: 8px;
    height: var(--line-hair);
    background: var(--grid);
    transform: translateY(-50%);
  }

  .site-nav__link[aria-current="page"]::before {
    width: 14px;
    height: 2px;
    background: var(--amber);
  }

  .site-nav__link[aria-current="page"]::after {
    left: 22px;
    right: auto;
    width: 22px;
    bottom: 9px;
  }

  .site-nav__num { display: inline; }

  .header-index-link { padding: 8px 12px; }

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

@media (max-width: 620px) {
  :root { --gutter: 18px; }

  body { font-size: 15px; }

  .header-meta { gap: 14px; font-size: 11px; }
  .header-meta__state { font-size: 11px; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-bottom { justify-content: flex-start; }

  .figure { box-shadow: var(--shadow-soft); }
  .frame { box-shadow: var(--shadow-soft); }

  .index-group__body { padding-left: 0; }
}

/* ---------- 21. 动效降级 ---------- */
@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;
  }

  .header-upper {
    transition: none;
  }

  .header-progress {
    transition: none;
  }
}