/* ==========================================================================
   博业体育 · /assets/site.css  共享外壳与基础组件
   设计基调：深夜球场数据指挥中心 / 展览画册式章节 / 仪表盘 + 印刷手册
   ========================================================================== */

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

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

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

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

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

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

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

address { font-style: normal; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #081C17;
  --panel: #102C24;
  --edge: #1B3A31;
  --paper: #F3EFE4;
  --mist: #A9B8B1;
  --lime: #C8FF4D;
  --orange: #FF6B3D;
  --cyan: #4BE0C7;
  --violet: #241B45;
  --red: #E5484D;
  --warm: #D8D0BF;

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --max: 1360px;
  --gap: 16px;
  --radius: 2px;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --shadow-lift: 0 22px 48px -32px rgba(0, 0, 0, .95);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(75, 224, 199, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(75, 224, 199, .05) 1px, transparent 1px);
  background-size: 88px 88px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(2.6rem, 6vw, 5.2rem); }
h2 { font-size: clamp(1.7rem, 3.1vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 1.6vw, 1.35rem); }

p { max-width: 70ch; }

strong { font-weight: 700; }

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

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* ---------- 4. 布局工具 ---------- */
.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
}

.rule {
  height: 1px;
  border: 0;
  background: var(--edge);
}

@media (min-width: 900px) {
  .container { width: min(100% - 64px, var(--max)); }
  .grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }
}

/* ---------- 5. 跳转链接 ---------- */
.site-skip {
  position: absolute;
  top: -64px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  transition: top .2s var(--ease);
}

.site-skip:focus {
  top: 12px;
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(8, 28, 23, .95);
  border-bottom: 1px solid var(--edge);
  backdrop-filter: saturate(120%) blur(4px);
}

.site-header__inner {
  position: relative;
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 13px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  flex: none;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lime);
  background: rgba(200, 255, 77, .07);
  color: var(--lime);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(200, 255, 77, .3);
  pointer-events: none;
}

.brand-mark__glyph {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  line-height: 1;
  letter-spacing: 0;
}

.brand-text {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.brand-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: .06em;
  color: var(--paper);
  white-space: nowrap;
}

.brand-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
}

.site-header__tools {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

/* ---------- 7. 主导航 ---------- */
.site-nav {
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 11px;
  border: 1px solid transparent;
  font-size: 14px;
  line-height: 1.2;
  color: var(--mist);
  white-space: nowrap;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.site-nav__link::before {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  background: transparent;
  transition: background-color .18s var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
  background: var(--panel);
  border-color: var(--edge);
}

.site-nav__link:hover::before { background: var(--cyan); }

.site-nav__link[aria-current="page"] {
  color: var(--lime);
  background: var(--panel);
  border-color: var(--edge);
  font-weight: 700;
}

.site-nav__link[aria-current="page"]::before { background: var(--lime); }

.site-nav__cta { display: none; }

.site-header__cta {
  margin-left: 6px;
  flex: none;
}

.nav-toggle { display: none; }

/* ---------- 8. 滚动进度 ---------- */
.site-progress {
  height: 2px;
  background: var(--edge);
}

.site-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--lime));
  transition: width .12s linear;
}

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: .04em;
  text-align: center;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.btn--primary {
  background: var(--lime);
  border-color: var(--lime);
  color: #08170F;
}

.btn--primary:hover {
  background: var(--paper);
  border-color: var(--paper);
}

.btn--ghost {
  background: transparent;
  border-color: var(--warm);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.btn--quiet {
  background: var(--panel);
  border-color: var(--edge);
  color: var(--mist);
}

.btn--quiet:hover {
  border-color: var(--cyan);
  color: var(--paper);
}

.btn--block { width: 100%; }

/* ---------- 10. 排版组件 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.lede {
  max-width: 62ch;
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  line-height: 1.72;
  color: var(--mist);
}

.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--paper);
}

.prose > * + * { margin-top: 1.05em; }

.prose h2 { margin-top: 1.9em; }

.prose ul,
.prose ol {
  padding-left: 1.25em;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(75, 224, 199, .45);
}

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

.prose blockquote {
  padding-left: 16px;
  border-left: 2px solid var(--lime);
  color: var(--mist);
}

.prose strong { color: var(--lime); }

/* ---------- 11. 大编号章节 ---------- */
.chapter-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 3vw, 28px);
  flex-wrap: wrap;
}

.chapter-no {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 7.5rem);
  line-height: .82;
  letter-spacing: -.05em;
  color: rgba(200, 255, 77, .16);
  -webkit-text-stroke: 1.5px rgba(200, 255, 77, .55);
}

.chapter-no--solid {
  color: var(--lime);
  -webkit-text-stroke: 0;
}

.chapter-body {
  flex: 1;
  min-width: min(100%, 260px);
  display: grid;
  gap: 12px;
  align-content: start;
}

/* ---------- 12. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

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

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--edge);
}

.breadcrumb a {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

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

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

/* ---------- 13. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  background: rgba(16, 44, 36, .7);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
}

.tag--lime {
  color: var(--lime);
  border-color: rgba(200, 255, 77, .5);
  background: rgba(200, 255, 77, .09);
}

.tag--orange {
  color: var(--orange);
  border-color: rgba(255, 107, 61, .5);
  background: rgba(255, 107, 61, .1);
}

.tag--solid {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 14. 面板与纸张层 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: 1px solid var(--edge);
}

.panel--paper {
  background: var(--paper);
  border-color: var(--warm);
  color: #14231E;
}

.panel--paper h2,
.panel--paper h3 { color: #0C1F19; }

.panel--paper .lede,
.panel--paper .data-label,
.panel--paper .eyebrow { color: #4A5B54; }

.panel--flat {
  background: transparent;
  border-color: var(--edge);
}

.paper-sheet {
  position: relative;
  padding: clamp(20px, 3vw, 44px);
  background: var(--paper);
  border: 1px solid var(--warm);
  box-shadow: 6px 6px 0 rgba(36, 27, 69, .6);
  color: #14231E;
}

.paper-sheet .prose { color: #14231E; }

/* ---------- 15. 数据卡 ---------- */
.data-card {
  padding: 18px 20px;
  background: linear-gradient(160deg, rgba(27, 58, 49, .92), rgba(16, 44, 36, .97));
  border: 1px solid var(--edge);
  border-left: 3px solid var(--cyan);
}

.data-card--alert { border-left-color: var(--orange); }
.data-card--muted { border-left-color: var(--edge); }

.data-figure {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  line-height: .95;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.data-figure--paper { color: #0E2A22; }

.data-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 16. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--violet);
  border: 1px solid var(--edge);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.06) brightness(.9);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(75, 224, 199, .18) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(75, 224, 199, .18) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .55;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 17. 筛选标签 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.chip:hover {
  color: var(--paper);
  border-color: var(--cyan);
}

.chip[aria-pressed="true"],
.chip[data-active="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 18. 折叠面板 ---------- */
.accordion { border-top: 1px solid var(--edge); }

.accordion__item { border-bottom: 1px solid var(--edge); }

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 0;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--paper);
  transition: color .18s var(--ease);
}

.accordion__trigger:hover { color: var(--lime); }

.accordion__trigger::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--lime);
}

.accordion__trigger[aria-expanded="true"]::after { content: "–"; }

.accordion__panel {
  padding: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.accordion__panel[hidden] { display: none; }

/* ---------- 19. 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--edge);
  background: var(--panel);
}

.kv-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.kv-table th,
.kv-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--edge);
}

.kv-table thead th {
  background: rgba(8, 28, 23, .7);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.kv-table tbody tr:last-child td { border-bottom: 0; }

.kv-table .num { color: var(--lime); }

/* ---------- 20. 状态点 ---------- */
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(200, 255, 77, .18);
}

.status-dot--live {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 61, .2);
}

/* ---------- 21. 显现动效基座 ---------- */
html.js-motion [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

html.js-motion [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity .45s var(--ease), transform .45s var(--ease);
}

/* ---------- 22. 页脚 ---------- */
.site-footer {
  background: #06140F;
  border-top: 1px solid var(--edge);
}

.site-footer__band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(169, 184, 177, .7);
}

.site-footer__band span:first-child { color: var(--cyan); }

.site-footer__inner {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
  padding-block: clamp(32px, 5vw, 60px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.footer-brand {
  display: grid;
  gap: 14px;
  align-content: start;
}

.footer-brand__head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: .06em;
  color: var(--paper);
}

.footer-brand__summary {
  max-width: 36ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.footer-stamp {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border: 1px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--warm);
  transform: rotate(-1.2deg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-col {
  display: grid;
  gap: 0;
  align-content: start;
}

.footer-col__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-list {
  display: grid;
  gap: 9px;
  align-content: start;
}

.footer-link {
  display: inline-block;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.footer-link:hover {
  color: var(--lime);
  border-color: rgba(200, 255, 77, .55);
}

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

.footer-contact__note {
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-contact__list {
  display: grid;
  gap: 8px;
}

.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.contact-key {
  min-width: 62px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(169, 184, 177, .72);
}

.copy-btn {
  padding: 5px 9px;
  border: 1px dashed var(--edge);
  background: rgba(16, 44, 36, .65);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--paper);
  text-align: left;
  word-break: break-all;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.copy-btn:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.copy-btn[data-copied="true"] {
  background: var(--lime);
  border-style: solid;
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.copy-status {
  min-height: 1.2em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.footer-contact__address {
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.site-footer__meta {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
  padding-block: 16px 26px;
  border-top: 1px solid var(--edge);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: rgba(169, 184, 177, .85);
}

.footer-meta__icp { color: var(--mist); }
.footer-meta__note { color: rgba(169, 184, 177, .58); }

/* ---------- 23. 响应式 ---------- */
@media (min-width: 760px) {
  .site-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
  .site-footer__band { padding-inline: 24px; }
}

@media (min-width: 1080px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 40px 56px;
    align-items: start;
  }
  .site-footer__band { padding-inline: 32px; }
}

@media (max-width: 420px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
}

@media (max-width: 960px) {
  .site-header__inner { padding-block: 11px; gap: 12px; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    padding: 14px 16px 18px;
    background: var(--panel);
    border-top: 1px solid var(--edge);
    border-bottom: 1px solid var(--edge);
    box-shadow: var(--shadow-lift);
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height .3s var(--ease), opacity .25s var(--ease), visibility .3s var(--ease);
  }

  .site-nav[data-open="true"] {
    max-height: min(74vh, 520px);
    opacity: 1;
    visibility: visible;
    overflow-y: auto;
  }

  .site-nav__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 10px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav__list > li { flex: none; }

  .site-nav__list::-webkit-scrollbar { height: 3px; }
  .site-nav__list::-webkit-scrollbar-thumb { background: var(--edge); }

  .site-nav__link {
    padding: 11px 14px;
    background: var(--ink);
    border-color: var(--edge);
    font-size: 13.5px;
    scroll-snap-align: start;
  }

  .site-nav__cta {
    display: flex;
    margin-top: 12px;
    width: 100%;
  }

  .site-header__cta { display: none; }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 9px 12px;
    border: 1px solid var(--edge);
    border-radius: var(--radius);
    background: var(--panel);
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .16em;
    transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
  }

  .nav-toggle:hover {
    color: var(--lime);
    border-color: var(--lime);
  }

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

  .nav-toggle__bars {
    display: grid;
    gap: 3px;
    width: 16px;
  }

  .nav-toggle__bars > span {
    display: block;
    height: 1.5px;
    background: currentColor;
  }

  .nav-toggle__label { line-height: 1; }
}

@media (max-width: 560px) {
  .brand-tag { display: none; }
  .brand-name { font-size: 17px; }
  .brand-mark { width: 32px; height: 32px; }
  .site-header__inner { gap: 10px; }
  .nav-toggle { padding: 9px 10px; }
  .nav-toggle__label { display: none; }
  .site-footer__band { font-size: 9.5px; letter-spacing: .16em; }
}

/* ---------- 24. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  html.js-motion [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .footer-stamp { transform: none; }
}