/* ==========================================================================
   真人百家家乐会馆 · /assets/site.css
   深夜会馆 · 蓝图网格 · 编号即导航
   ========================================================================== */

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

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

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

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

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

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

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

button { background: none; border: 0; }

/* ---------- 2. 设计变量 ---------- */
:root {
  --night: #0B2B24;
  --club: #071C17;
  --felt: #1E5A47;
  --felt-bright: #2F7C63;
  --gold: #C9A227;
  --gold-pale: #E9DBA6;
  --chip: #B23A3A;
  --ivory: #F4F0E6;
  --mist: #9BAAA4;
  --char: #121816;

  --line: rgba(233, 219, 166, .20);
  --line-mid: rgba(233, 219, 166, .34);
  --line-gold: rgba(201, 162, 39, .62);
  --grid: rgba(233, 219, 166, .045);

  --font-head: "Noto Serif SC", "Songti SC", "Source Han Serif", "Source Serif 4", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

  --fs-12: .75rem;
  --fs-14: .875rem;
  --fs-16: 1rem;
  --fs-18: 1.125rem;
  --fs-24: 1.5rem;
  --fs-32: 2rem;
  --fs-48: 3rem;
  --fs-72: 4.5rem;

  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 76px;

  --ease: cubic-bezier(.22, .68, .32, 1);
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, .48);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--night);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 72px 72px, 72px 72px;
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 70% at 50% -8%, rgba(47, 124, 99, .30), transparent 62%),
    radial-gradient(80% 60% at 100% 100%, rgba(201, 162, 39, .07), transparent 60%);
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: .02em;
}

h1 { font-size: clamp(2rem, 5.4vw, 4.5rem); letter-spacing: .01em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: var(--fs-18); }
h4 { font-size: var(--fs-16); }

#main-content { position: relative; z-index: 1; display: block; }

::selection { background-color: rgba(201, 162, 39, .35); color: var(--ivory); }

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

/* ---------- 4. 布局基元 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(44px, 6vw, 92px);
}

.section__rule {
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, transparent, var(--line-mid) 10%, var(--line-mid) 90%, transparent);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 22px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.section__index {
  font-family: var(--font-head);
  font-size: var(--fs-24);
  letter-spacing: .12em;
  color: var(--gold);
  line-height: 1;
}

.section__title { font-size: clamp(1.5rem, 3vw, 2rem); }

.section__note {
  flex: 1 1 240px;
  font-size: var(--fs-14);
  color: var(--mist);
  letter-spacing: .04em;
}

.bp-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 24px);
}

.bp-grid > * { grid-column: span var(--span, 12); }

/* ---------- 5. 通用组件 ---------- */
.num {
  font-family: var(--font-head);
  font-size: 1.6em;
  letter-spacing: .12em;
  color: var(--gold);
  line-height: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 22px;
  border: 1px solid var(--line-gold);
  background-color: transparent;
  color: var(--ivory);
  font-size: var(--fs-14);
  letter-spacing: .12em;
  cursor: pointer;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.btn--gold {
  background-color: var(--gold);
  border-color: var(--gold);
  color: var(--char);
  font-weight: 600;
}

.btn--gold:hover { background-color: var(--gold-pale); border-color: var(--gold-pale); }

.btn--ghost { border-color: var(--line-mid); color: var(--gold-pale); }

.btn--ghost:hover { border-color: var(--gold); color: var(--ivory); background-color: rgba(30, 90, 71, .4); }

.btn:hover { transform: translateY(-1px); }

.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  background-color: rgba(30, 90, 71, .26);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.card--felt { background-color: var(--felt); }

.card--quiet { background-color: rgba(7, 28, 23, .62); box-shadow: none; }

.card__num {
  display: block;
  font-family: var(--font-head);
  font-size: var(--fs-24);
  letter-spacing: .12em;
  color: var(--gold);
  margin-bottom: 10px;
}

.card__title {
  font-family: var(--font-head);
  font-size: var(--fs-18);
  margin-bottom: 8px;
}

.card__text {
  font-size: var(--fs-14);
  color: var(--mist);
  line-height: 1.7;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--line-mid);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--gold-pale);
}

.tag--alert {
  border-color: rgba(178, 58, 58, .72);
  color: #E8A9A9;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line-mid);
  background-color: rgba(7, 28, 23, .5);
  color: var(--gold-pale);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

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

.copy-btn.is-done { border-color: var(--felt-bright); color: #BFE6D6; }

.breadcrumb { padding-block: 14px; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--mist);
}

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

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

.breadcrumb__link:hover { color: var(--gold-pale); }

.breadcrumb__current { color: var(--gold); }

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--line-mid);
}

.tab {
  padding: 12px 18px;
  border-bottom: 2px solid transparent;
  color: var(--mist);
  font-size: var(--fs-14);
  letter-spacing: .1em;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.tab:hover { color: var(--ivory); background-color: rgba(47, 124, 99, .18); }

.tab[aria-selected="true"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
  background-color: rgba(30, 90, 71, .3);
}

.tabpanel { padding-top: clamp(18px, 2.4vw, 28px); }

.tabpanel[hidden] { display: none; }

.tabpanel.is-active { animation: tabIn .24s var(--ease) both; }

@keyframes tabIn {
  from { opacity: 0; transform: translateX(10px); }
  to { opacity: 1; transform: none; }
}

.media {
  position: relative;
  overflow: hidden;
  background-color: var(--club);
  border: 1px solid var(--line);
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.9) brightness(.84);
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px;
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--gold-pale);
  background: linear-gradient(180deg, transparent, rgba(7, 28, 23, .94));
}

.prose {
  max-width: 72ch;
  font-size: var(--fs-16);
}

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

.prose h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin-top: 2.2em;
  margin-bottom: .6em;
}

.prose h3 {
  margin-top: 1.7em;
  margin-bottom: .4em;
  color: var(--gold-pale);
}

.prose ul { margin-top: .6em; }

.prose li {
  position: relative;
  padding-left: 1.6em;
  margin-top: .5em;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 1px;
  background-color: var(--gold);
}

.prose strong { color: var(--gold-pale); font-weight: 600; }

.page-head {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(40px, 6vw, 84px));
  padding-bottom: clamp(28px, 4vw, 52px);
}

.page-head__kicker {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .24em;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-head__title { max-width: 20ch; }

.page-head__lede {
  max-width: 60ch;
  margin-top: 16px;
  font-size: var(--fs-18);
  color: var(--ivory);
}

.page-head__meta {
  margin-top: 20px;
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--mist);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- 6. 头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  background-color: rgba(7, 28, 23, .78);
  border-bottom: 1px solid transparent;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: background-color .32s var(--ease), border-color .32s var(--ease), box-shadow .32s var(--ease);
}

.site-header.is-scrolled {
  background-color: var(--club);
  border-bottom-color: var(--line-mid);
  box-shadow: 0 22px 44px -34px rgba(0, 0, 0, .95);
}

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--felt-bright), var(--gold));
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}

.site-header.is-scrolled .header-progress { opacity: 1; }

.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 80;
  padding: 10px 18px;
  background-color: var(--gold);
  color: var(--char);
  font-size: var(--fs-14);
  letter-spacing: .08em;
  transition: top .2s var(--ease);
}

.skip-link:focus { top: 10px; }

.header-shell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  grid-template-areas: "brand nav search actions";
  align-items: center;
  gap: clamp(12px, 1.6vw, 28px);
  min-height: var(--header-h);
}

.brand { grid-area: brand; min-width: 0; }

.brand__mark {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 8px;
}

.brand__glyph {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line-gold);
  color: var(--gold);
  font-family: var(--font-head);
  font-size: var(--fs-18);
  letter-spacing: .06em;
  flex: none;
}

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

.brand__name {
  display: block;
  font-family: var(--font-head);
  font-size: var(--fs-18);
  letter-spacing: .06em;
  line-height: 1.25;
  white-space: nowrap;
}

.brand__tagline {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--mist);
  white-space: nowrap;
}

.site-nav { grid-area: nav; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: var(--fs-14);
  letter-spacing: .1em;
  white-space: nowrap;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 0;
  height: 2px;
  background-color: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .24s var(--ease);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--gold-pale); }

.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.search {
  grid-area: search;
  position: relative;
  justify-self: end;
  width: 100%;
  max-width: 290px;
}

.search__label {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.search__input {
  width: 100%;
  padding: 9px 12px;
  background-color: rgba(30, 90, 71, .34);
  border: 1px solid var(--line-mid);
  color: var(--ivory);
  font-size: var(--fs-14);
  letter-spacing: .04em;
}

.search__input::placeholder { color: rgba(155, 170, 164, .9); }

.search__input:focus {
  outline: none;
  border-color: var(--gold);
  background-color: rgba(30, 90, 71, .55);
}

.search__input:focus-visible { outline: 2px solid var(--gold); outline-offset: 1px; }

.search__panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 6;
  width: min(360px, calc(100vw - 2 * var(--gutter)));
  max-height: 60vh;
  overflow: auto;
  padding: 6px;
  background-color: var(--club);
  border: 1px solid var(--line-gold);
  box-shadow: 0 26px 52px -26px rgba(0, 0, 0, .92);
}

.search__panel[hidden] { display: none; }

.search__hit {
  display: block;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.search__hit:hover,
.search__hit:focus-visible {
  background-color: rgba(47, 124, 99, .3);
  border-left-color: var(--gold);
}

.search__hit-title {
  display: block;
  font-size: var(--fs-14);
  color: var(--ivory);
}

.search__hit-meta {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--mist);
}

.search__empty {
  display: block;
  padding: 12px;
  font-size: var(--fs-14);
  color: var(--mist);
}

.header-actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.nav-toggle,
.dock-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 12px;
  background-color: rgba(30, 90, 71, .36);
  border: 1px solid var(--line-mid);
  color: var(--gold-pale);
  font-size: var(--fs-14);
  letter-spacing: .1em;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.nav-toggle[aria-expanded="true"],
.dock-toggle[aria-expanded="true"] {
  border-color: var(--gold);
  color: var(--gold);
  background-color: rgba(47, 124, 99, .34);
}

.dock-toggle { display: inline-flex; }

/* ---------- 7. 右侧悬浮工具栏 ---------- */
.utility-dock {
  position: fixed;
  right: 16px;
  bottom: 84px;
  z-index: 55;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(210px, 33vw);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s linear;
}

.utility-dock[data-open] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.utility-dock__item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background-color: var(--club);
  border: 1px solid var(--line-gold);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .45);
  color: var(--ivory);
  font-size: var(--fs-14);
  letter-spacing: .08em;
  text-align: left;
  cursor: pointer;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.utility-dock__item:hover,
.utility-dock__item:focus-visible {
  background-color: var(--felt);
  border-color: var(--gold);
  transform: translateX(-2px);
}

.utility-dock__key {
  font-family: var(--font-head);
  font-size: var(--fs-14);
  letter-spacing: .12em;
  color: var(--gold);
}

.utility-dock__label { white-space: nowrap; }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(56px, 8vw, 120px);
  background-color: var(--club);
  border-top: 1px solid var(--line-mid);
}

.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: .55;
}

.footer-shell { padding-block: clamp(36px, 5vw, 64px) 26px; }

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .9fr) minmax(0, 1.3fr);
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.footer-brand__name {
  font-family: var(--font-head);
  font-size: var(--fs-24);
  letter-spacing: .06em;
}

.footer-brand__line {
  margin-top: 8px;
  font-size: var(--fs-14);
  letter-spacing: .08em;
  color: var(--gold-pale);
}

.footer-brand__update {
  margin-top: 14px;
  max-width: 34ch;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mist);
}

.footer-nav__title,
.footer-contact__title {
  font-family: var(--font-body);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--gold);
  margin-bottom: 14px;
}

.footer-nav__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 18px;
}

.footer-link {
  display: inline-block;
  padding: 5px 0;
  font-size: var(--fs-14);
  letter-spacing: .06em;
  color: var(--mist);
  transition: color .2s var(--ease);
}

.footer-link::before {
  content: "— ";
  color: var(--gold);
  opacity: .75;
}

.footer-link:hover,
.footer-link:focus-visible { color: var(--gold-pale); }

.footer-contact__list {
  display: grid;
  gap: 10px;
}

.footer-contact__item {
  display: grid;
  grid-template-columns: 5.2em minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.footer-contact__label {
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--mist);
}

.footer-contact__value {
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--ivory);
  word-break: break-word;
}

.footer-note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--line-gold);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mist);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 20px;
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--mist);
}

.footer-legal { color: var(--gold-pale); }

.footer-update { color: var(--mist); }

/* ---------- 9. 响应式 ---------- */
@media (max-width: 1024px) {
  .header-shell {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "brand search actions";
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-h));
    overflow: auto;
    padding: 10px var(--gutter) 26px;
    background-color: var(--club);
    border-bottom: 1px solid var(--gold);
    box-shadow: 0 30px 50px -30px rgba(0, 0, 0, .95);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s linear;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    padding: 14px 6px;
    font-size: var(--fs-18);
    border-bottom: 1px solid var(--line);
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] {
    color: var(--gold);
    box-shadow: inset 3px 0 0 var(--gold);
    padding-left: 16px;
  }

  .search { max-width: 240px; }
}

@media (min-width: 1025px) {
  .utility-dock {
    right: 22px;
    bottom: auto;
    top: 50%;
    width: 206px;
    transform: translateY(-50%);
    opacity: 1;
    visibility: visible;
  }

  .utility-dock[data-open] { transform: translateY(-50%); }

  .dock-toggle { display: none; }
}

@media (max-width: 900px) {
  .brand__tagline { display: none; }

  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 740px) {
  :root { --header-h: 122px; }

  .header-shell {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand actions"
      "search search";
    row-gap: 10px;
    padding-block: 12px;
    min-height: 0;
  }

  .brand__name { font-size: var(--fs-16); }

  .search { max-width: none; justify-self: stretch; }

  .search__panel { width: 100%; left: 0; right: 0; }

  .footer-top { grid-template-columns: minmax(0, 1fr); }

  .footer-nav__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 420px) {
  .nav-toggle,
  .dock-toggle { padding: 0 10px; letter-spacing: .04em; }

  .utility-dock { width: min(200px, 62vw); }
}

/* ---------- 10. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

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

  .site-nav,
  .utility-dock { transition: none; }

  .btn:hover,
  .utility-dock__item:hover { transform: none; }
}