/* ==========================================================================
   优德看台 · 共享站点样式 /assets/site.css
   高原夜空深蓝底 + 精密网格 + 战报橙信号 + 冷青数据 / 锐利直角
   ========================================================================== */

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

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

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

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

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

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

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

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

table { border-collapse: collapse; border-spacing: 0; }

:target { scroll-margin-top: 118px; }

/* ------------------------------ 2. Tokens ----------------------------- */
:root {
  /* 背景与网格 */
  --night: #061326;
  --night-deep: #04101F;
  --panel: #0B2038;
  --panel-2: #0E2742;
  --line: #23405C;
  --line-soft: rgba(35, 64, 92, 0.55);

  /* 信号色 */
  --orange: #FF6B2C;
  --orange-lit: #FF9A5A;
  --cyan: #35D0C4;
  --flag-blue: #3C7DFF;
  --white: #F3F7FC;
  --muted: #93AAC4;
  --dim: #5C7896;
  --red: #E5484D;
  --green: #36B37E;
  --yellow: #F2C94C;

  /* 字体 */
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --font-display: "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular,
    Menlo, Consolas, "Courier New", monospace;

  /* 度量 */
  --wrap: 1240px;
  --gutter: clamp(16px, 3.6vw, 40px);
  --radius: 0px;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
  --header-h: 104px;
}

/* --------------------------- 3. Base & 中文排版 ------------------------ */
body {
  min-height: 100vh;
  background-color: var(--night);
  background-image:
    radial-gradient(1200px 420px at 50% -140px, rgba(60, 125, 255, 0.16), rgba(6, 19, 38, 0) 70%),
    linear-gradient(to right, rgba(35, 64, 92, 0.30) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(35, 64, 92, 0.16) 1px, transparent 1px);
  background-size: 100% 620px, 96px 96px, 96px 96px;
  background-repeat: no-repeat, repeat, repeat;
  background-position: center top, center top, center top;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.06em;
  color: var(--white);
}

p { text-wrap: pretty; }

::selection { background: var(--orange); color: #0A0F18; }

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

/* --------------------------- 4. 通用工具类 --------------------------- */
.stand-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.stand-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.stand-muted { color: var(--muted); }

.stand-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.stand-kicker::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--orange);
  flex: 0 0 auto;
}

.stand-section-title {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.25;
}

.stand-lede {
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.9;
  color: var(--muted);
  max-width: 62ch;
}

.stand-rule {
  height: 1px;
  background: var(--line-soft);
  border: 0;
  margin: 0;
}

/* ------------------------------ 5. 主内容 ---------------------------- */
.stand-main {
  display: block;
  padding-block: clamp(18px, 2.6vw, 32px) clamp(56px, 8vw, 96px);
}

#main-content { scroll-margin-top: 118px; }

.stand-section { margin-block: clamp(36px, 5vw, 64px); }

/* ------------------------------ 6. 骨架屏 ------------------------------ */
.stand-grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.stand-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.stand-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.stand-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: clamp(18px, 2.6vw, 34px);
  align-items: start;
}

/* ------------------------------ 7. 按钮 ------------------------------ */
.stand-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.stand-btn--solid {
  background: var(--orange);
  border-color: var(--orange);
  color: #14060A;
  font-weight: 700;
}

.stand-btn--solid:hover {
  background: var(--orange-lit);
  border-color: var(--orange-lit);
  transform: translateY(-1px);
}

.stand-btn--ghost {
  background: rgba(11, 32, 56, 0.55);
  border-color: var(--line);
  color: var(--white);
}

.stand-btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(53, 208, 196, 0.08);
}

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

.stand-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ------------------------------ 8. 标签 ------------------------------ */
.stand-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  background: rgba(11, 32, 56, 0.7);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.6;
  white-space: nowrap;
}

.stand-tag--orange { color: var(--orange); border-color: rgba(255, 107, 44, 0.55); background: rgba(255, 107, 44, 0.10); }
.stand-tag--cyan   { color: var(--cyan);   border-color: rgba(53, 208, 196, 0.5);  background: rgba(53, 208, 196, 0.09); }
.stand-tag--green  { color: var(--green);  border-color: rgba(54, 179, 126, 0.5);  background: rgba(54, 179, 126, 0.09); }
.stand-tag--yellow { color: var(--yellow); border-color: rgba(242, 201, 76, 0.5);  background: rgba(242, 201, 76, 0.09); }
.stand-tag--red    { color: var(--red);    border-color: rgba(229, 72, 77, 0.5);   background: rgba(229, 72, 77, 0.09); }
.stand-tag--blue   { color: var(--flag-blue); border-color: rgba(60, 125, 255, 0.5); background: rgba(60, 125, 255, 0.10); }

/* ------------------------------ 9. 状态灯 ---------------------------- */
.stand-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.stand-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--muted);
}

.stand-dot--green  { background: var(--green); }
.stand-dot--orange { background: var(--orange); }
.stand-dot--cyan   { background: var(--cyan); }
.stand-dot--yellow { background: var(--yellow); }
.stand-dot--red    { background: var(--red); }

@keyframes stand-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.28; }
}

.stand-dot--green { animation: stand-pulse 2.6s var(--ease) infinite; }

/* ------------------------------ 10. 卡片 ----------------------------- */
.stand-card {
  position: relative;
  display: block;
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 39, 66, 0.92), rgba(6, 19, 38, 0.94));
}

.stand-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 36px;
  height: 2px;
  background: var(--orange);
  pointer-events: none;
}

.stand-card--flat::before { background: var(--cyan); }

.stand-card__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--dim);
  margin-bottom: 10px;
}

/* --------------------------- 11. 图片容器基础 ------------------------ */
.stand-figure {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  aspect-ratio: 16 / 10;
  background-color: var(--panel);
  background-image:
    repeating-linear-gradient(135deg, rgba(35, 64, 92, 0.42) 0 1px, transparent 1px 10px),
    linear-gradient(150deg, var(--panel-2), var(--night-deep));
}

.stand-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.03);
}

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

.stand-figure__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  border-top: 1px solid var(--line-soft);
  background: rgba(4, 16, 31, 0.88);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

/* ------------------------------ 12. 面包屑 --------------------------- */
.stand-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: clamp(14px, 2vw, 22px) 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.stand-crumbs a {
  color: var(--muted);
  transition: color 0.16s var(--ease);
}

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

.stand-crumbs [aria-current="page"] { color: var(--white); }

.stand-crumbs__sep {
  color: var(--line);
  user-select: none;
}

/* ------------------------------ 13. Skip link ------------------------ */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 300;
  padding: 12px 20px;
  background: var(--orange);
  color: #14060A;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: top 0.18s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

/* ------------------------------ 14. 页头 ----------------------------- */
.stand-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(6, 19, 38, 0.95);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 22px 44px -30px rgba(0, 0, 0, 0.95);
}

/* 14.1 状态带 */
.stand-header__status {
  border-bottom: 1px solid rgba(35, 64, 92, 0.6);
  background: linear-gradient(90deg, var(--panel) 0%, #08182C 55%, var(--panel) 100%);
}

.stand-header__status-inner {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: 34px;
  overflow-x: auto;
  scrollbar-width: none;
}

.stand-header__status-inner::-webkit-scrollbar { display: none; }

.stand-status__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.stand-status__item--end { margin-left: auto; }

.stand-status__key {
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
}

.stand-status__val {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

/* 14.2 命令栏 */
.stand-header__bar {
  position: relative;
  background: rgba(6, 19, 38, 0.72);
}

.stand-header__bar-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 66px;
}

/* 14.3 品牌 */
.stand-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding-block: 8px;
}

.stand-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  background: var(--orange);
  color: #10060A;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
}

.stand-brand__text { display: block; min-width: 0; }

.stand-brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.16em;
  line-height: 1.15;
}

.stand-brand__tag {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
  white-space: nowrap;
}

.stand-brand:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

/* 14.4 导航 */
.stand-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.stand-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 12px 11px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.stand-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--dim);
  transition: color 0.18s var(--ease);
}

.stand-nav__link:hover {
  color: var(--white);
  background: rgba(60, 125, 255, 0.10);
}

.stand-nav__link:hover .stand-nav__idx { color: var(--flag-blue); }

.stand-nav__link[aria-current="page"] {
  color: var(--white);
  background: rgba(255, 107, 44, 0.09);
}

.stand-nav__link[aria-current="page"] .stand-nav__idx { color: var(--orange); }

.stand-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  background: var(--orange);
}

/* 14.5 右侧动作区 */
.stand-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 4px;
  padding-left: 16px;
  border-left: 1px solid var(--line-soft);
}

/* 14.6 移动开关 */
.stand-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

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

.stand-nav-toggle:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.stand-nav-toggle__bars {
  display: inline-grid;
  gap: 4px;
  width: 16px;
}

.stand-nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.stand-nav-toggle[aria-expanded="true"] .stand-nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.stand-nav-toggle[aria-expanded="true"] .stand-nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}

.stand-nav-toggle[aria-expanded="true"] .stand-nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 14.7 滚动进度尺 */
.stand-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
  background: transparent;
}

.stand-progress__fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--orange) 100%);
}

/* ------------------------------ 15. 页脚 ----------------------------- */
.stand-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 80px);
  background: linear-gradient(180deg, var(--panel) 0%, var(--night-deep) 100%);
  border-top: 1px solid var(--line);
}

.stand-footer__ribbon {
  display: flex;
  height: 4px;
  width: 100%;
}

.stand-footer__ribbon span { flex: 1 1 0; }
.stand-footer__ribbon span:nth-child(1) { background: var(--flag-blue); }
.stand-footer__ribbon span:nth-child(2) { background: var(--yellow); }
.stand-footer__ribbon span:nth-child(3) { background: var(--red); }
.stand-footer__ribbon span:nth-child(4) { background: var(--green); }
.stand-footer__ribbon span:nth-child(5) { background: var(--white); opacity: 0.85; }

.stand-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: clamp(22px, 3.4vw, 52px);
  padding-block: clamp(38px, 5.4vw, 62px) clamp(30px, 4vw, 46px);
}

.stand-footer__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.1em;
  line-height: 1.5;
  color: var(--white);
}

.stand-footer__summary {
  margin-top: 12px;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.stand-footer__flags {
  display: flex;
  gap: 6px;
  margin-top: 20px;
}

.stand-flag {
  display: block;
  width: 24px;
  height: 3px;
}

.stand-flag--blue   { background: var(--flag-blue); }
.stand-flag--yellow { background: var(--yellow); }
.stand-flag--red    { background: var(--red); }
.stand-flag--green  { background: var(--green); }
.stand-flag--white  { background: var(--white); opacity: 0.85; }

.stand-footer__col { min-width: 0; }

.stand-footer__title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--cyan);
  line-height: 1.6;
}

.stand-footer__list {
  display: grid;
  gap: 9px;
}

.stand-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  transition: color 0.16s var(--ease);
}

.stand-footer__link::before {
  content: "";
  width: 5px;
  height: 1px;
  flex: 0 0 auto;
  background: var(--line);
  transition: width 0.16s var(--ease), background-color 0.16s var(--ease);
}

.stand-footer__link:hover { color: var(--orange-lit); }
.stand-footer__link:hover::before { width: 12px; background: var(--orange); }

.stand-footer__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  color: var(--white);
}

.stand-footer__meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--dim);
  overflow-wrap: anywhere;
}

.stand-footer__bottom {
  display: grid;
  gap: 12px;
  padding-block: 22px 30px;
  border-top: 1px solid var(--line-soft);
}

.stand-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
}

.stand-footer__legal .stand-footer__link {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
}

.stand-footer__copy { color: var(--muted); }

/* --------------------------- 16. 渐显 reveal ------------------------- */
.reveal-on [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.reveal-on [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.34s var(--ease), transform 0.34s var(--ease);
}

/* --------------------------- 17. 响应式断点 -------------------------- */
@media (max-width: 1180px) {
  .stand-header__actions .stand-btn--ghost { display: none; }
  .stand-brand__tag { display: none; }
  .stand-nav__link { padding-inline: 9px; font-size: 13.5px; }
}

@media (max-width: 1040px) {
  :root { --header-h: 100px; }

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

  .stand-header__bar-inner { gap: 12px; min-height: 60px; }

  .stand-header__actions {
    padding-left: 12px;
    gap: 8px;
  }

  .stand-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 140;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    margin-left: 0;
    padding: 8px var(--gutter) 20px;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    background: var(--night-deep);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 50px -20px rgba(0, 0, 0, 0.9);
    transition: max-height 0.28s var(--ease), opacity 0.2s var(--ease),
      visibility 0.28s linear;
  }

  .stand-nav[data-open="true"] {
    max-height: 76vh;
    overflow-y: auto;
    visibility: visible;
    opacity: 1;
  }

  .stand-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 15px 4px;
    font-size: 15px;
    border-bottom: 1px solid rgba(35, 64, 92, 0.55);
  }

  .stand-nav__link[aria-current="page"]::after {
    left: 4px;
    right: auto;
    width: 26px;
    bottom: 8px;
  }

  .stand-layout { grid-template-columns: minmax(0, 1fr); }
  .stand-grid--three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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

@media (max-width: 760px) {
  .stand-header__status-inner { gap: 18px; min-height: 32px; }
  .stand-status__item--end { margin-left: 0; }
  .stand-header__actions .stand-btn--solid { padding-inline: 12px; font-size: 12px; }
  .stand-brand__name { font-size: 16.5px; letter-spacing: 0.12em; }
  .stand-brand__mark { width: 34px; height: 34px; font-size: 17px; }
  .stand-grid--two,
  .stand-grid--three { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .stand-footer__top { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .stand-footer__bottom { padding-block: 20px 26px; }
  .stand-nav-toggle__label { display: none; }
  .stand-header__actions { border-left: 0; padding-left: 0; }
  .stand-btn { min-height: 40px; }
}

/* ----------------------- 18. 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-on [data-reveal],
  .reveal-on [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }
}