/* ============================================================
   安装娱乐殿 · 共享层样式 /assets/site.css
   色彩：纸感灰砖 / 墨曜黑 / 殿宇深红 / 电子青 / 琥珀金 / 靛紫档案 / 深蓝绿底
   形状：锐利直角 + 1px 精密网格（仅悬浮导航与按钮使用胶囊圆角）
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 108px; }
body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  --ax-paper: #F3F0E9;
  --ax-paper-2: #E9E4D9;
  --ax-ink: #15171C;
  --ax-brick: #454B52;
  --ax-line: #B9BFC6;
  --ax-crimson: #7C2231;
  --ax-crimson-deep: #43101B;
  --ax-cyan: #34D2D0;
  --ax-cyan-deep: #0F6E71;
  --ax-amber: #D6A43D;
  --ax-indigo: #1E2A46;
  --ax-teal: #143F3B;
  --ax-on-dark: #EDEAE2;

  --ax-shell: 1200px;
  --ax-gutter: 24px;
  --ax-capsule: 999px;
  --ax-hairline: 1px solid var(--ax-line);

  --ax-font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --ax-font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --ax-font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --ax-ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--ax-paper);
  color: var(--ax-ink);
  font-family: var(--ax-font-body);
  font-size: 17px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: .012em;
  overflow-x: hidden;
}
h1, h2, h3, h4 {
  font-family: var(--ax-font-display);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .012em;
}
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); font-weight: 900; line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.55rem); }
p { max-width: 68ch; }
strong { font-weight: 700; }

.ax-display {
  font-family: var(--ax-font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 7.2vw, 7.5rem);
  line-height: 1.02;
  letter-spacing: -.012em;
}
.ax-mono { font-family: var(--ax-font-mono); font-size: .82em; letter-spacing: .06em; }
.ax-muted { color: var(--ax-brick); }
.ax-lead {
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  line-height: 1.95;
  color: var(--ax-brick);
  max-width: 60ch;
}
.ax-label {
  display: inline-block;
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ax-cyan-deep);
}

/* ---------- 4. 焦点与无障碍 ---------- */
:focus-visible { outline: 2px solid var(--ax-cyan); outline-offset: 2px; }
.ax-footer :focus-visible { outline-color: var(--ax-amber); }

.ax-skip {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--ax-ink);
  color: var(--ax-cyan);
  border: 1px solid var(--ax-cyan);
  font-family: var(--ax-font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  transition: top .16s var(--ax-ease);
}
.ax-skip:focus { top: 16px; }

/* ---------- 5. 布局骨架 ---------- */
.ax-shell {
  width: 100%;
  max-width: var(--ax-shell);
  margin-inline: auto;
  padding-inline: var(--ax-gutter);
}
.ax-shell--wide { max-width: 1440px; }

.ax-section { padding-block: 72px; }
.ax-section__head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 32px;
  align-items: end;
  border-bottom: var(--ax-hairline);
  padding-bottom: 18px;
  margin-bottom: 36px;
}
.ax-section__title { margin: 0; }
.ax-section__note {
  font-family: var(--ax-font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  letter-spacing: .06em;
  color: var(--ax-brick);
}
.ax-divider { border: 0; height: 1px; background: var(--ax-line); margin-block: 32px; }

.ax-grid { display: grid; gap: 24px; }
.ax-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.ax-span-rail { grid-column: span 2; }
.ax-span-3 { grid-column: span 3; }
.ax-span-4 { grid-column: span 4; }
.ax-span-5 { grid-column: span 5; }
.ax-span-6 { grid-column: span 6; }
.ax-span-7 { grid-column: span 7; }
.ax-span-8 { grid-column: span 8; }
.ax-span-12 { grid-column: 1 / -1; }

.ax-rail {
  font-family: var(--ax-font-mono);
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: .04em;
  color: var(--ax-brick);
}
.ax-rail--sticky { position: sticky; top: 108px; align-self: start; }

/* ---------- 6. 页头：悬浮胶囊浮岛 ---------- */
.ax-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 12px 0 14px;
  background: rgba(243, 240, 233, .88);
  -webkit-backdrop-filter: blur(12px) saturate(1.15);
  backdrop-filter: blur(12px) saturate(1.15);
  border-bottom: 1px solid rgba(185, 191, 198, .5);
}
.ax-header__rail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(185, 191, 198, .38);
  overflow: hidden;
}
.ax-header__progress {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--ax-cyan), var(--ax-amber));
  transition: width .12s linear;
}
.ax-header__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
}

.ax-brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px 8px 10px;
  background: var(--ax-ink);
  color: var(--ax-on-dark);
  border: 1px solid rgba(185, 191, 198, .28);
  border-radius: var(--ax-capsule);
  transition: border-color .16s var(--ax-ease);
}
.ax-brand:hover { border-color: var(--ax-cyan); }
.ax-brand__seal {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--ax-crimson);
  color: var(--ax-amber);
  border: 1px solid rgba(214, 164, 61, .55);
  font-family: var(--ax-font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1;
}
.ax-brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.ax-brand__name {
  font-family: var(--ax-font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .08em;
}
.ax-brand__sub {
  font-family: var(--ax-font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: rgba(237, 234, 226, .6);
}

.ax-nav { flex: 1 1 auto; display: flex; justify-content: center; }
.ax-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px;
  background: var(--ax-ink);
  border: 1px solid rgba(185, 191, 198, .28);
  border-radius: var(--ax-capsule);
}
.ax-nav__link {
  display: block;
  padding: 8px 12px;
  border-radius: var(--ax-capsule);
  font-size: 13.5px;
  letter-spacing: .03em;
  color: rgba(237, 234, 226, .78);
  white-space: nowrap;
  transition: color .16s var(--ax-ease), background .16s var(--ax-ease);
}
.ax-nav__link:hover { color: var(--ax-cyan); background: rgba(52, 210, 208, .1); }
.ax-nav__link[aria-current="page"] {
  background: var(--ax-crimson);
  color: #F6F2EA;
  box-shadow: inset 0 -2px 0 var(--ax-cyan);
}

.ax-header__util {
  flex: 0 0 auto;
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ax-index-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 5px 11px;
  background: var(--ax-ink);
  border: 1px solid rgba(185, 191, 198, .28);
  border-radius: var(--ax-capsule);
  font-family: var(--ax-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(237, 234, 226, .6);
  white-space: nowrap;
}
.ax-index-chip__key { color: rgba(237, 234, 226, .55); }
.ax-index-chip__val { color: var(--ax-amber); font-size: 12px; font-weight: 600; }
.ax-header__actions { display: flex; align-items: center; gap: 8px; }

.ax-nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  padding: 0;
  background: var(--ax-ink);
  border: 1px solid rgba(185, 191, 198, .28);
  border-radius: var(--ax-capsule);
  cursor: pointer;
  transition: border-color .16s var(--ax-ease);
}
.ax-nav-toggle:hover { border-color: var(--ax-cyan); }
.ax-nav-toggle__bar {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 3px 0;
  background: var(--ax-on-dark);
  transition: transform .18s var(--ax-ease), opacity .18s var(--ax-ease);
}
.ax-header[data-open] .ax-nav-toggle__bar:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.ax-header[data-open] .ax-nav-toggle__bar:nth-child(2) { opacity: 0; }
.ax-header[data-open] .ax-nav-toggle__bar:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- 7. 按钮与标记 ---------- */
.ax-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 0;
  background: transparent;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1;
  cursor: pointer;
  transition: background .16s var(--ax-ease), color .16s var(--ax-ease),
              border-color .16s var(--ax-ease), transform .16s var(--ax-ease);
}
.ax-btn:active { transform: translateY(1px); }
.ax-btn--sm { padding: 9px 15px; font-size: 13px; letter-spacing: .04em; }
.ax-btn--block { width: 100%; }
.ax-btn--primary { background: var(--ax-crimson); border-color: var(--ax-crimson-deep); color: #F7F3EB; }
.ax-btn--primary:hover { background: var(--ax-crimson-deep); }
.ax-btn--accent { background: var(--ax-amber); border-color: #B4862A; color: #221703; }
.ax-btn--accent:hover { background: #E7B851; }
.ax-btn--cyan { background: var(--ax-cyan); border-color: #22A5A3; color: #04231F; }
.ax-btn--cyan:hover { background: #5FE0DE; }
.ax-btn--ghost { border-color: var(--ax-line); color: var(--ax-ink); }
.ax-btn--ghost:hover { border-color: var(--ax-ink); background: rgba(21, 23, 28, .05); }
.ax-btn--onDark { border-color: rgba(185, 191, 198, .42); color: var(--ax-on-dark); }
.ax-btn--onDark:hover { border-color: var(--ax-cyan); color: var(--ax-cyan); }

.ax-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--ax-line);
  background: rgba(255, 255, 255, .55);
  font-family: var(--ax-font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ax-brick);
  white-space: nowrap;
}
.ax-chip--amber { border-color: var(--ax-amber); background: rgba(214, 164, 61, .14); color: #6B4C0F; }
.ax-chip--cyan { border-color: var(--ax-cyan-deep); background: rgba(52, 210, 208, .14); color: var(--ax-cyan-deep); }
.ax-chip--crimson { border-color: var(--ax-crimson); background: rgba(124, 34, 49, .1); color: var(--ax-crimson); }
.ax-chip--onDark { border-color: rgba(185, 191, 198, .3); background: rgba(237, 234, 226, .06); color: rgba(237, 234, 226, .82); }

/* ---------- 8. 资料卡 / 索引 / 清单 ---------- */
.ax-card {
  position: relative;
  background: #FFFDF8;
  border: 1px solid var(--ax-line);
  padding: 24px 24px 22px;
}
.ax-card--archive { border-left: 3px solid var(--ax-crimson); }
.ax-card--dark { background: var(--ax-indigo); border-color: rgba(185, 191, 198, .24); color: var(--ax-on-dark); }
.ax-card__meta {
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ax-cyan-deep);
  margin-bottom: 10px;
}
.ax-card--dark .ax-card__meta { color: var(--ax-cyan); }
.ax-card__title { font-family: var(--ax-font-display); font-size: 1.3rem; margin-bottom: 10px; }
.ax-card__body { font-size: 15.5px; line-height: 1.85; color: var(--ax-brick); }
.ax-card--dark .ax-card__body { color: rgba(237, 234, 226, .78); }

.ax-index-list { display: flex; flex-direction: column; border-top: var(--ax-hairline); }
.ax-index-list__item {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 13px 2px;
  border-bottom: var(--ax-hairline);
  font-size: 15px;
}
.ax-index-list__no {
  flex: 0 0 62px;
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ax-crimson);
}

.ax-list { display: flex; flex-direction: column; gap: 10px; }
.ax-list li { position: relative; padding-left: 24px; font-size: 15.5px; line-height: 1.8; }
.ax-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 11px;
  height: 2px;
  background: var(--ax-amber);
}

/* ---------- 9. 横向主题带 ---------- */
.ax-band {
  background: var(--ax-teal);
  color: var(--ax-on-dark);
  padding: 30px 0;
  border-top: 1px solid rgba(52, 210, 208, .32);
  border-bottom: 1px solid rgba(52, 210, 208, .32);
}
.ax-band--crimson { background: var(--ax-crimson); border-color: rgba(214, 164, 61, .45); }
.ax-band--indigo { background: var(--ax-indigo); border-color: rgba(52, 210, 208, .28); }
.ax-band__inner { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
.ax-band .ax-label { color: var(--ax-amber); }

/* ---------- 10. 标签页 / 横向滑动 ---------- */
.ax-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: var(--ax-hairline);
}
.ax-tabs__tab {
  appearance: none;
  padding: 11px 18px;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 0;
  font-family: var(--ax-font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--ax-brick);
  cursor: pointer;
  transition: background .14s var(--ax-ease), color .14s var(--ax-ease), border-color .14s var(--ax-ease);
}
.ax-tabs__tab:hover { color: var(--ax-crimson); }
.ax-tabs__tab[aria-selected="true"],
.ax-tabs__tab.is-active {
  background: var(--ax-ink);
  border-color: var(--ax-ink);
  color: var(--ax-on-dark);
  box-shadow: inset 0 2px 0 var(--ax-cyan);
}
.ax-tabs__panel { padding-top: 22px; }
.ax-tabs__panel[hidden] { display: none; }
.ax-tabs__panel:focus-visible { outline-offset: 6px; }

.ax-scroll {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 14px;
  -webkit-overflow-scrolling: touch;
}
.ax-scroll__item { flex: 0 0 auto; width: min(320px, 78vw); scroll-snap-align: start; }

/* ---------- 11. 面包屑 ---------- */
.ax-breadcrumb { font-family: var(--ax-font-mono); font-size: 12.5px; letter-spacing: .06em; }
.ax-breadcrumb__list { display: flex; flex-wrap: wrap; gap: 8px; }
.ax-breadcrumb__item::after { content: "/"; margin-left: 8px; color: var(--ax-line); }
.ax-breadcrumb__item:last-child::after { content: ""; margin: 0; }
.ax-breadcrumb__link { color: var(--ax-brick); border-bottom: 1px solid transparent; }
.ax-breadcrumb__link:hover { color: var(--ax-crimson); border-bottom-color: var(--ax-crimson); }
.ax-breadcrumb__link[aria-current="page"] { color: var(--ax-ink); border-bottom-color: var(--ax-amber); }

/* ---------- 12. 图片容器基础规则（页面阶段放入 <img> 或 data-label 占位） ---------- */
.ax-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: linear-gradient(140deg, var(--ax-brick) 0%, var(--ax-indigo) 58%, var(--ax-teal) 100%);
  border: 1px solid var(--ax-line);
}
.ax-media > img { width: 100%; height: 100%; object-fit: cover; }
.ax-media--wide { aspect-ratio: 16 / 9; }
.ax-media--tall { aspect-ratio: 3 / 4; }
.ax-media--square { aspect-ratio: 1 / 1; }
.ax-media--band { aspect-ratio: 21 / 9; }
.ax-media--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(243, 240, 233, .12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(243, 240, 233, .12) 1px, transparent 1px);
  background-size: 36px 36px;
}
.ax-media--placeholder::before {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  text-align: center;
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: rgba(243, 240, 233, .72);
}
.ax-media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  background: rgba(21, 23, 28, .84);
  color: var(--ax-on-dark);
  font-family: var(--ax-font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
}

/* ---------- 13. 进场显现 ---------- */
.ax-reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s var(--ax-ease), transform .2s var(--ax-ease);
}
.ax-reveal-ready [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 14. 页脚：档案底仓 ---------- */
.ax-footer {
  margin-top: 88px;
  background: var(--ax-indigo);
  color: rgba(237, 234, 226, .86);
}
.ax-footer__axis {
  height: 6px;
  background: linear-gradient(90deg,
    var(--ax-crimson) 0 34%,
    var(--ax-amber) 34% 40%,
    var(--ax-cyan) 40% 58%,
    var(--ax-teal) 58% 100%);
}
.ax-footer__inner {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 32px;
  padding-block: 56px 44px;
}
.ax-footer__head { grid-column: span 4; }
.ax-footer__brand {
  font-family: var(--ax-font-display);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: .1em;
  color: #F6F2EA;
  margin-bottom: 14px;
  max-width: none;
}
.ax-footer__summary {
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(237, 234, 226, .72);
  max-width: 40ch;
}
.ax-footer__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }

.ax-footer__cols {
  grid-column: span 4;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 24px;
}
.ax-footer__col { margin-bottom: 26px; }
.ax-footer__col-title {
  font-family: var(--ax-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--ax-cyan);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(185, 191, 198, .24);
}
.ax-footer__links { display: flex; flex-direction: column; }
.ax-footer__link {
  display: inline-block;
  width: fit-content;
  padding: 7px 0;
  font-size: 14.5px;
  color: rgba(237, 234, 226, .8);
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ax-ease), border-color .16s var(--ax-ease);
}
.ax-footer__link:hover { color: var(--ax-amber); border-bottom-color: var(--ax-amber); }

.ax-footer__contact { grid-column: span 4; }
.ax-contact-card {
  background: rgba(20, 63, 59, .58);
  border: 1px solid rgba(52, 210, 208, .28);
  padding: 22px 22px 20px;
}
.ax-contact-card__title {
  font-family: var(--ax-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--ax-cyan);
  margin-bottom: 14px;
}
.ax-contact-card__row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(185, 191, 198, .2);
}
.ax-contact-card__row:last-of-type { border-bottom: 0; }
.ax-contact-card__label {
  font-family: var(--ax-font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: rgba(237, 234, 226, .55);
  padding-top: 4px;
}
.ax-contact-card__value {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(237, 234, 226, .94);
  word-break: break-word;
}
.ax-contact-card__note {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 2px solid var(--ax-amber);
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(237, 234, 226, .64);
  max-width: none;
}

.ax-footer__legal {
  background: rgba(21, 23, 28, .45);
  border-top: 1px solid rgba(185, 191, 198, .2);
}
.ax-footer__legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding-block: 18px 22px;
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(237, 234, 226, .58);
}
.ax-footer__legal-line { color: rgba(237, 234, 226, .7); }
.ax-footer__legal-meta { color: rgba(237, 234, 226, .5); }

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1240px) {
  .ax-index-chip { display: none; }
}

@media (max-width: 1000px) {
  :root { --ax-gutter: 20px; }
  html { scroll-padding-top: 92px; }

  .ax-nav-toggle { display: flex; }
  .ax-header__bar { gap: 10px; }

  .ax-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 14px);
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity .18s var(--ax-ease), transform .18s var(--ax-ease), visibility .18s linear;
  }
  .ax-header[data-open] .ax-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }
  .ax-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border-radius: 2px;
    background: rgba(21, 23, 28, .97);
    box-shadow: 0 22px 44px rgba(21, 23, 28, .3);
  }
  .ax-nav__link {
    padding: 13px 14px;
    border-radius: 2px;
    font-size: 15px;
    border-bottom: 1px solid rgba(185, 191, 198, .14);
  }
  .ax-nav__item:last-child .ax-nav__link { border-bottom: 0; }
  .ax-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 var(--ax-cyan); }

  .ax-section__head { grid-template-columns: minmax(0, 1fr); gap: 12px; align-items: start; }

  .ax-footer__inner { grid-template-columns: repeat(6, minmax(0, 1fr)); padding-block: 44px 34px; }
  .ax-footer__head { grid-column: span 6; }
  .ax-footer__cols { grid-column: span 6; }
  .ax-footer__contact { grid-column: span 6; }
}

@media (max-width: 900px) {
  .ax-grid--12 { grid-template-columns: minmax(0, 1fr); }
  .ax-span-rail,
  .ax-span-3,
  .ax-span-4,
  .ax-span-5,
  .ax-span-6,
  .ax-span-7,
  .ax-span-8,
  .ax-span-12 { grid-column: 1 / -1; }
  .ax-rail--sticky { position: static; }
}

@media (max-width: 720px) {
  :root { --ax-gutter: 18px; }
  body { font-size: 16.5px; line-height: 1.85; }
  .ax-header__actions { display: none; }
  .ax-section { padding-block: 52px; }
  .ax-footer__cols { grid-template-columns: minmax(0, 1fr); }
  .ax-footer__legal-inner { justify-content: flex-start; }
  .ax-band { padding: 24px 0; }
}

@media (max-width: 560px) {
  .ax-brand__sub { display: none; }
  .ax-brand { padding: 8px 16px 8px 8px; }
  .ax-footer__brand { font-size: 24px; }
}

/* ---------- 16. 减少动画 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .ax-reveal-ready [data-reveal],
  .ax-reveal-ready [data-reveal].is-visible {
    opacity: 1;
    transform: none;
  }
  .ax-header__progress { transition: none; }
}