/* ============================================================
   爱游戏赛场 · /assets/site.css
   深夜赛事指挥台：竖向品牌轨道 + 状态条 + 命令栏 + 暗调面板
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

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

ul, ol { list-style: none; }

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

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

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

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

/* ---------- 2. 变量 ---------- */
:root {
  --c-bg: #0A1020;
  --c-panel: #121B2E;
  --c-line: #26344A;
  --c-line-soft: rgba(38, 52, 74, 0.55);
  --c-ink: #E9EEF6;
  --c-muted: #93A1B7;
  --c-accent: #FF6A2B;
  --c-accent-soft: rgba(255, 106, 43, 0.45);
  --c-data: #26E0C6;
  --c-data-soft: rgba(38, 224, 198, 0.28);
  --c-grass: #4C7F63;
  --c-grass-ink: #8FC6A6;
  --c-amber: #F0B441;
  --c-black: #05080F;
  --c-deep: #070C17;

  --rail-w: 88px;
  --shell-max: 1360px;
  --pad-x: clamp(14px, 3vw, 32px);
  --radius: 2px;

  --font-display: "Archivo Narrow", "Oswald", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--c-bg);
  background-image:
    radial-gradient(1100px 640px at 78% -10%, rgba(38, 224, 198, 0.075), transparent 62%),
    radial-gradient(900px 560px at 4% 2%, rgba(255, 106, 43, 0.065), transparent 60%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.25;
  text-wrap: balance;
}

p { text-wrap: pretty; }

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

code, kbd, samp { font-family: var(--font-mono); font-size: 0.92em; }

::selection {
  background: var(--c-accent);
  color: #06090F;
}

:focus-visible {
  outline: 2px solid var(--c-data);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 14px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--c-accent);
  color: #06090F;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transition: top 0.18s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 14px;
  outline-color: var(--c-ink);
}

/* ---------- 5. 竖向品牌轨道 ---------- */
.site-rail { display: none; }

@media (min-width: 1180px) {
  body { padding-left: var(--rail-w); }

  .site-rail {
    display: flex;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: var(--rail-w);
    z-index: 120;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 18px 0 22px;
    background: linear-gradient(180deg, #070C17 0%, #0E1626 46%, #05080F 100%);
    border-right: 1px solid var(--c-line);
  }
}

.site-rail__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--c-accent);
  color: #06090F;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  border-radius: var(--radius);
  box-shadow: 0 10px 24px -14px rgba(255, 106, 43, 0.95);
}

.site-rail__word {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.32em;
  color: var(--c-muted);
}

.site-rail__ticks {
  position: relative;
  flex: 1 1 auto;
  width: 9px;
  margin: 6px 0;
  border-left: 1px solid var(--c-line);
  background-image: repeating-linear-gradient(
    180deg,
    var(--c-line) 0, var(--c-line) 1px,
    transparent 1px, transparent 22px
  );
  background-size: 5px 22px;
  background-repeat: repeat-y;
}

.site-rail__meta {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--c-data);
  opacity: 0.85;
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 110;
  background: rgba(8, 13, 25, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-line);
}

/* 6.1 状态条 */
.status-bar {
  background: var(--c-deep);
  border-bottom: 1px solid var(--c-line);
}

.status-bar__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}

.status-bar__left,
.status-bar__right {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.status-bar__label {
  color: #6E7D95;
  white-space: nowrap;
}

.status-bar__value {
  color: var(--c-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-bar__value--ok { color: var(--c-data); }

.status-bar__sep {
  width: 1px;
  height: 12px;
  background: var(--c-line);
  flex: 0 0 auto;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-data);
  flex: 0 0 auto;
  box-shadow: 0 0 0 3px rgba(38, 224, 198, 0.16);
  animation: dot-breathe 2.6s ease-out infinite;
}

@keyframes dot-breathe {
  0%, 100% { box-shadow: 0 0 0 3px rgba(38, 224, 198, 0.16); }
  50%      { box-shadow: 0 0 0 7px rgba(38, 224, 198, 0.03); }
}

/* 6.2 命令栏 */
.command-bar__inner {
  position: relative;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 10px var(--pad-x);
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--c-accent);
  color: #06090F;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  border-radius: var(--radius);
  box-shadow: 0 8px 20px -12px rgba(255, 106, 43, 0.95);
}

.brand__text { display: block; }

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--c-ink);
  line-height: 1.15;
}

.brand__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--c-muted);
  line-height: 1.4;
}

/* 6.3 导航 */
.primary-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
}

.primary-nav__list > li {
  display: flex;
  align-items: center;
}

.primary-nav__list > li + li::before {
  content: "";
  width: 1px;
  height: 14px;
  background: var(--c-line);
  margin: 0 clamp(6px, 1vw, 12px);
  flex: 0 0 auto;
}

.primary-nav a {
  position: relative;
  display: inline-block;
  padding: 9px 2px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-muted);
  white-space: nowrap;
  transition: color 0.16s var(--ease);
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--ease);
}

.primary-nav a::before {
  content: attr(data-hint);
  position: absolute;
  left: 50%;
  top: calc(100% + 12px);
  transform: translate(-50%, -4px);
  padding: 5px 10px;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-muted);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease);
  z-index: 6;
}

.primary-nav a:hover,
.primary-nav a:focus-visible { color: var(--c-ink); }

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after { transform: scaleX(1); }

.primary-nav a:hover::before,
.primary-nav a:focus-visible::before {
  opacity: 1;
  transform: translate(-50%, 0);
}

.primary-nav a[aria-current="page"] { color: var(--c-ink); }

.primary-nav a[aria-current="page"]::after { transform: scaleX(1); }

.command-bar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 6.4 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-ink);
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}

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

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

.nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--c-ink);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-align: center;
  transition: background-color 0.16s var(--ease), border-color 0.16s var(--ease),
              color 0.16s var(--ease), transform 0.16s var(--ease);
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--c-data);
  color: var(--c-data);
}

.btn--primary {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #06090F;
  box-shadow: 0 10px 26px -14px rgba(255, 106, 43, 0.95);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #FF8347;
  border-color: #FF8347;
  color: #06090F;
  transform: translateY(-1px);
}

.btn--sm {
  padding: 8px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.btn--ghost {
  border-color: transparent;
  color: var(--c-muted);
}

.btn--ghost:hover { color: var(--c-accent); }

/* ---------- 8. 容器与网格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding-inline: var(--pad-x);
}

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.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)); }

@media (max-width: 980px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 9. 面板与区块抬头 ---------- */
.panel {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.panel--flush {
  background: rgba(18, 27, 46, 0.45);
}

.section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--c-line);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-accent);
}

.section-head__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--c-ink);
}

.section-head__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--c-muted);
}

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

.breadcrumb li + li::before {
  content: "›";
  color: var(--c-muted);
  opacity: 0.5;
}

.breadcrumb a { color: var(--c-muted); }

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

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

/* ---------- 11. 标签与数字 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--c-muted);
  white-space: nowrap;
}

.tag--data {
  color: var(--c-data);
  border-color: var(--c-data-soft);
  background: rgba(38, 224, 198, 0.06);
}

.tag--warn {
  color: var(--c-amber);
  border-color: rgba(240, 180, 65, 0.42);
  background: rgba(240, 180, 65, 0.06);
}

.tag--inj {
  color: var(--c-grass-ink);
  border-color: rgba(76, 127, 99, 0.62);
  background: rgba(76, 127, 99, 0.12);
}

.tag--accent {
  color: var(--c-accent);
  border-color: var(--c-accent-soft);
  background: rgba(255, 106, 43, 0.07);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
}

/* ---------- 12. 索引列表 ---------- */
.index-list { border-top: 1px solid var(--c-line); }

.index-list__item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 14px 6px;
  border-bottom: 1px solid var(--c-line);
  transition: background-color 0.16s var(--ease);
}

.index-list__item:hover { background: rgba(38, 224, 198, 0.05); }

@media (max-width: 560px) {
  .index-list__item {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 10px;
  }
  .index-list__item > :last-child { grid-column: 2; }
}

/* ---------- 13. 图片容器 ---------- */
.figure {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(38, 224, 198, 0.12), transparent 58%),
    linear-gradient(135deg, #101A2C 0%, #0A1220 55%, #060B16 100%);
  aspect-ratio: 16 / 10;
  isolation: isolate;
}

.figure > img,
.figure > picture > img,
.figure > svg,
.figure > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.figure::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--c-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line-soft) 1px, transparent 1px);
  background-size: 12.5% 12.5%;
}

.figure::before {
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 3;
  pointer-events: none;
  border: 1px solid var(--c-data-soft);
}

.figure--wide { aspect-ratio: 21 / 9; }
.figure--tall { aspect-ratio: 4 / 5; }
.figure--square { aspect-ratio: 1 / 1; }

@media (max-width: 560px) {
  .figure::before { inset: 6px; }
}

/* ---------- 14. 正文容器 ---------- */
.prose {
  max-width: 74ch;
  font-size: 16px;
  line-height: 1.75;
  color: #CDD6E4;
}

.prose > p + p { margin-top: 1em; }

.prose h2 {
  margin-top: 1.9em;
  margin-bottom: 0.7em;
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--c-ink);
}

.prose h3 {
  margin-top: 1.5em;
  margin-bottom: 0.55em;
  font-size: 17px;
  color: var(--c-ink);
}

.prose ul,
.prose ol {
  margin: 1em 0;
  padding-left: 1.15em;
  list-style: disc;
}

.prose li + li { margin-top: 0.35em; }

.prose blockquote {
  margin: 1.4em 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--c-accent);
  font-family: var(--font-serif);
  color: var(--c-ink);
}

.prose a {
  color: var(--c-data);
  border-bottom: 1px solid var(--c-data-soft);
}

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

/* ---------- 15. 滚动进度与返回顶部 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 300;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--c-accent), var(--c-data));
  pointer-events: none;
}

@media (min-width: 1180px) {
  .scroll-progress { left: var(--rail-w); }
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 100;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 15px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease),
              visibility 0.2s linear, border-color 0.16s var(--ease), color 0.16s var(--ease);
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* ---------- 16. 滚动显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 17. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: var(--c-black);
  border-top: 1px solid var(--c-line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(260px, 40%);
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent) 0 62%, var(--c-data) 62% 100%);
}

.site-footer__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(36px, 5vw, 62px) var(--pad-x) 22px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) repeat(3, minmax(130px, 1fr));
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: 34px;
  border-bottom: 1px solid var(--c-line);
}

.site-footer__logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--c-ink);
}

.site-footer__tag {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--c-data);
}

.site-footer__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

.site-footer__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 15px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--c-muted);
}

.site-footer__title::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--c-accent);
  transform: rotate(45deg);
}

.site-footer__list li + li { margin-top: 9px; }

.site-footer__list a {
  display: inline-block;
  font-size: 14px;
  color: var(--c-ink);
  opacity: 0.78;
  transition: color 0.16s var(--ease), opacity 0.16s var(--ease), padding-left 0.16s var(--ease);
}

.site-footer__list a:hover,
.site-footer__list a:focus-visible {
  color: var(--c-accent);
  opacity: 1;
  padding-left: 4px;
}

.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
  font-size: 13.5px;
  color: var(--c-muted);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 18px;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: #6B7A92;
}

@media (max-width: 900px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .site-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .site-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .site-footer__brand { grid-column: auto; }
  .site-footer__legal { flex-direction: column; }
}

/* ---------- 18. 响应式：平板与手机页头 ---------- */
@media (max-width: 1179px) {
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 6px var(--pad-x) 16px;
    background: #070C17;
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 22px 34px -26px rgba(0, 0, 0, 0.95);
  }

  .primary-nav[data-open] { display: block; }

  .primary-nav__list {
    display: block;
    max-height: min(66vh, 460px);
    overflow-y: auto;
  }

  .primary-nav__list > li {
    display: block;
    border-bottom: 1px solid var(--c-line);
  }

  .primary-nav__list > li + li::before { display: none; }

  .primary-nav a {
    display: block;
    padding: 14px 2px;
    font-size: 15px;
  }

  .primary-nav a::before,
  .primary-nav a::after { display: none; }

  .primary-nav a[aria-current="page"] {
    color: var(--c-accent);
    padding-left: 12px;
    box-shadow: inset 2px 0 0 var(--c-accent);
  }
}

@media (max-width: 640px) {
  body { font-size: 15px; }

  html { scroll-padding-top: 118px; }

  .status-bar__inner { font-size: 10px; }

  .status-bar__sep,
  .status-bar__hours { display: none; }

  .command-bar__inner {
    min-height: 64px;
    gap: 10px;
  }

  .brand__sub { display: none; }

  .brand__mark {
    width: 30px;
    height: 30px;
    font-size: 16px;
  }

  .brand__name { font-size: 15.5px; }

  .nav-toggle__label { display: none; }

  .nav-toggle { padding: 9px 11px; }
}

/* ---------- 19. 减少动态偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-progress { transition: none !important; }
}