/* =========================================================
   谈球吧体育 · 共享站点样式 /assets/site.css
   夜场球场母题 · 技术蓝图网格 · 珠宝色分区
   ========================================================= */

/* ---------- 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, figure, figcaption, blockquote, dl, dd, dl, dt {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

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

table { border-collapse: collapse; width: 100%; }

main { display: block; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-0: #0A0E0C;
  --ink-1: #10201A;
  --ink-2: #16281F;
  --ink-3: #1E3328;

  --green: #2FD37A;
  --green-soft: #9BEFC0;

  --yellow: #F0C33C;
  --brick: #C4462F;
  --brick-soft: #E8735C;

  --indigo: #3A3F86;
  --indigo-soft: #A9AEE8;

  --wine: #6E1F33;
  --wine-soft: #F0A8BB;

  --text: #C9D6CE;
  --muted: #6F8479;
  --paper: #F5F8F4;

  --line: #22352C;
  --line-strong: #33513F;
  --grid: rgba(47, 211, 122, 0.055);

  --shadow-hard: 4px 4px 0 rgba(0, 0, 0, 0.55);
  --shadow-lift: 6px 6px 0 rgba(0, 0, 0, 0.62);

  --radius: 2px;
  --header-h: 56px;
  --shell: 1400px;

  --font-head: "Oswald", "Archivo Narrow", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Menlo", "Consolas", "DejaVu Sans Mono", monospace;

  --dur: 200ms;
  --ease: ease-out;
}

/* ---------- 3. 文档基线 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--ink-0);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  color: var(--paper);
  letter-spacing: 0;
}

h1 { font-size: clamp(32px, 5vw, 64px); }
h2 { font-size: 28px; }
h3 { font-size: 20px; }
h4 { font-size: 16px; }

.prose { max-width: 38em; }
.prose p + p { margin-top: 1.2em; }

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

#main-content { scroll-margin-top: calc(var(--header-h) + 12px); }

/* ---------- 4. 头部命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background-color: var(--ink-1);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 64px 64px;
  border-bottom: 2px solid var(--line-strong);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--green);
  color: var(--ink-0);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  border: 2px solid var(--ink-0);
  border-radius: var(--radius);
  transition: top 160ms var(--ease);
}
.skip-link:focus { top: 8px; }

.header-inner {
  max-width: var(--shell);
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 26px;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

/* 品牌 */
.brand {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-right: 22px;
  border-right: 1px solid var(--line);
}
.brand-mark {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.05;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}
.brand-subline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  line-height: 1.3;
  color: var(--muted);
}
.brand:hover .brand-mark { color: var(--green); }

/* 索引式导航 */
.primary-nav {
  flex: 1 1 auto;
  min-width: 0;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-item { display: block; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 12px;
  line-height: 20px;
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--text);
  border-radius: var(--radius);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.nav-link:hover {
  color: var(--green-soft);
  background-color: rgba(47, 211, 122, 0.08);
}
.nav-link:hover .nav-index { color: var(--green); }
.nav-link[aria-current="page"] { color: var(--green); }
.nav-link[aria-current="page"] .nav-index { color: var(--green); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: -10px;
  height: 2px;
  background-color: var(--green);
}

/* 状态标签与菜单按钮 */
.header-meta {
  flex: 0 0 auto;
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  background-color: var(--ink-0);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--green-soft);
  white-space: nowrap;
}
.status-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--green);
  animation: statusPulse 2.6s var(--ease) infinite;
}
.status-time { color: var(--muted); }

@keyframes statusPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(47, 211, 122, 0.5); }
  50% { box-shadow: 0 0 0 5px rgba(47, 211, 122, 0); }
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  background-color: var(--ink-0);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background-color: currentColor;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background-color: currentColor;
}
.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after { top: 5px; }
.nav-toggle[aria-expanded="true"] {
  color: var(--green);
  border-color: var(--green);
}

/* 阅读进度刻度 */
.scroll-track {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  z-index: 3;
  pointer-events: none;
}
.scroll-bar {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--green);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ---------- 5. 页脚 ---------- */
.site-footer {
  margin-top: 72px;
  background-color: var(--ink-1);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 64px 64px;
  border-top: 2px solid var(--line-strong);
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 44px 20px 34px;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 44px;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}
.footer-mark {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--paper);
}
.footer-note {
  max-width: 26em;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}
.footer-col { min-width: 0; }
.footer-title {
  padding-bottom: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  line-height: 1.4;
  color: var(--green);
  border-bottom: 1px solid var(--line);
}
.footer-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-list a {
  display: inline-block;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-list a:hover {
  color: var(--green-soft);
  transform: translateX(3px);
}
.footer-list--meta li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.footer-key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.footer-val {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: break-word;
}

.footer-base {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 20px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.footer-legal { color: var(--muted); }
.footer-copy { color: var(--muted); }

/* 回到顶部 */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  padding: 9px 15px;
  background-color: var(--ink-1);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.to-top:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  background-color: var(--green);
  color: var(--ink-0);
}
.to-top[hidden] { display: none; }

/* ---------- 6. 布局骨架 ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 52px 0;
  border-top: 1px solid var(--line);
}
.section:first-of-type { border-top: 0; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line-strong);
}
.section-head h2 { font-size: clamp(22px, 2.6vw, 30px); }
.section-head p {
  max-width: 44em;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--green);
}
.kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background-color: var(--green);
}

/* 左侧纵向索引栏 */
.page-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 0 32px;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
.section-rail {
  position: sticky;
  top: var(--header-h);
  align-self: start;
  padding: 30px 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.rail-index {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}
.rail-rule {
  width: 22px;
  height: 2px;
  background-color: var(--line-strong);
}
.rail-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  line-height: 1.5;
  color: var(--muted);
}

/* 网格 */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--sidebar { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}
.breadcrumb-list li + li::before {
  content: "/";
  color: var(--line-strong);
}
.breadcrumb-list a {
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.breadcrumb-list a:hover { color: var(--green-soft); }
.breadcrumb-list [aria-current="page"] { color: var(--green-soft); }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 2px solid var(--green);
  border-radius: var(--radius);
  background-color: var(--green);
  color: var(--ink-0);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.btn:active {
  transform: translateY(0);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
}
.btn--ghost {
  background-color: transparent;
  color: var(--green);
}
.btn--ghost:hover { background-color: rgba(47, 211, 122, 0.1); }
.btn--paper {
  background-color: var(--paper);
  border-color: var(--paper);
  color: var(--ink-0);
}

/* ---------- 9. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background-color: rgba(47, 211, 122, 0.06);
  color: var(--green-soft);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  white-space: nowrap;
}
.tag--warn {
  border-color: rgba(240, 195, 60, 0.6);
  background-color: rgba(240, 195, 60, 0.08);
  color: var(--yellow);
}
.tag--alert {
  border-color: rgba(196, 70, 47, 0.7);
  background-color: rgba(196, 70, 47, 0.12);
  color: var(--brick-soft);
}
.tag--window {
  border-color: rgba(58, 63, 134, 0.85);
  background-color: rgba(58, 63, 134, 0.18);
  color: var(--indigo-soft);
}
.tag--board {
  border-color: rgba(110, 31, 51, 0.9);
  background-color: rgba(110, 31, 51, 0.22);
  color: var(--wine-soft);
}
.tag--muted {
  border-color: var(--line-strong);
  background-color: transparent;
  color: var(--muted);
}

/* ---------- 10. 数字 ---------- */
.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-style: normal;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
.num--lg { font-size: 1.6em; line-height: 1.1; }
.num--xl {
  font-size: 2.2em;
  line-height: 1;
  color: var(--paper);
}

/* ---------- 11. 面板 ---------- */
.panel {
  padding: 20px;
  background-color: var(--ink-1);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.panel--hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--green);
}
.panel--window {
  border-color: var(--indigo);
  background-image: linear-gradient(180deg, rgba(58, 63, 134, 0.22), rgba(16, 32, 26, 0) 62%);
}
.panel--board {
  border-color: var(--wine);
  background-image: linear-gradient(180deg, rgba(110, 31, 51, 0.24), rgba(16, 32, 26, 0) 62%);
}
.panel--paper {
  background-color: var(--paper);
  border-color: var(--ink-1);
  color: var(--ink-1);
}
.panel--paper h2,
.panel--paper h3,
.panel--paper h4 { color: var(--ink-1); }

/* ---------- 12. 数据表格 ---------- */
.data-table { width: 100%; font-size: 14px; }
.data-table thead th {
  padding: 8px 10px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
  border-top: 2px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}
.data-table tbody td {
  padding: 11px 10px;
  vertical-align: middle;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}
.data-table tbody tr {
  transition: background-color var(--dur) var(--ease);
}
.data-table tbody tr:hover { background-color: var(--ink-2); }
.data-table .is-rank {
  font-family: var(--font-mono);
  color: var(--muted);
}

/* ---------- 13. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  background-color: var(--ink-2);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  box-shadow: var(--shadow-hard);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--standard { aspect-ratio: 4 / 3; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--band { aspect-ratio: 21 / 9; }
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(180deg, rgba(10, 14, 12, 0) 45%, rgba(10, 14, 12, 0.74) 100%);
}
.media-frame__label {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--green-soft);
}

.media {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.img-caption {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 14. 时间轴与流水带 ---------- */
.timeline {
  position: relative;
  padding-left: 26px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background-color: var(--line-strong);
}
.timeline-item {
  position: relative;
  padding-bottom: 22px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 7px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--green);
  border-radius: 50%;
  background-color: var(--ink-0);
}

.move-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}
.move-arrow {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--green);
}

/* ---------- 15. 显现动效协议 ---------- */
[data-reveal] {
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}
.js [data-reveal]:not(.is-revealed) {
  opacity: 0;
  transform: translateY(8px);
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1180px) {
  .header-inner { gap: 18px; }
  .nav-index { display: none; }
}

@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--sidebar { grid-template-columns: minmax(0, 1fr); }
  .page-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  .section-rail {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 22px 0 0;
  }
}

@media (max-width: 900px) {
  .header-inner { gap: 14px; }
  .brand-subline { display: none; }
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: var(--header-h);
    max-height: 0;
    overflow: hidden;
    background-color: var(--ink-1);
    background-image:
      linear-gradient(var(--grid) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 64px 64px;
    border-left: 1px solid var(--line);
    border-right: 1px solid var(--line);
    border-bottom: 2px solid var(--green);
    transition: max-height 220ms var(--ease);
  }
  .primary-nav[data-open="true"] {
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    box-shadow: 0 14px 0 rgba(0, 0, 0, 0.45);
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
  }
  .nav-index { display: inline; }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 22px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }
  .nav-link[aria-current="page"]::after { display: none; }
  .nav-link[aria-current="page"] {
    background-color: rgba(47, 211, 122, 0.08);
    box-shadow: inset 3px 0 0 var(--green);
  }
}

@media (max-width: 640px) {
  .status-time { display: none; }
  .brand-mark { font-size: 17px; }
  .brand { padding-right: 14px; }
  .container,
  .page-shell,
  .footer-inner,
  .footer-base,
  .header-inner { padding-left: 14px; padding-right: 14px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 38px 0; }
  .to-top { right: 14px; bottom: 14px; }
}

/* ---------- 17. 降低动效偏好 ---------- */
@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;
  }
  .js [data-reveal]:not(.is-revealed) {
    opacity: 1;
    transform: none;
  }
  .primary-nav { transition: none; }
}