/* ==========================================================================
   澳门新萄京中心 · 共享样式表 /assets/site.css
   坐标蓝图体系：切角面板 · 鎏金细线 · 深红锚点 · 明暗交替分区
   ========================================================================== */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { width: 100%; border-collapse: collapse; }
:target { scroll-margin-top: 132px; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  --deep-red: #8C1C2B;
  --deep-red-lit: #A32334;
  --gold: #C8A24C;
  --night: #0A1A2A;
  --trench: #12293D;
  --teal: #1F6F6B;
  --neon: #3FD3BE;
  --mist: #F0F4F8;
  --stone: #9FB0C0;
  --warm: #E4E1DA;
  --ink: #22303C;

  --cut: 18px;
  --cut-sm: 10px;

  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 56px);

  --line: rgba(200, 162, 76, 0.32);
  --line-soft: rgba(159, 176, 192, 0.18);

  --ease: cubic-bezier(0.2, 0.75, 0.3, 1);

  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background: var(--night);
  color: var(--mist);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
}

h1 { font-size: clamp(34px, 5vw, 56px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: 22px; }

::selection { background: var(--deep-red); color: var(--warm); }

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

.section {
  position: relative;
  padding-block: clamp(52px, 8vw, 108px);
}

.section--night { background: var(--night); }
.section--trench { background: var(--trench); }
.section--red { background: var(--deep-red); color: var(--mist); }
.section--warm { background: var(--warm); color: var(--ink); }
.section--warm .lede { color: #4A5A68; }
.section--warm .eyebrow { color: #8A6C1E; }
.section--warm a { color: var(--deep-red); }

.coord-lines { position: relative; }
.coord-lines::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(200, 162, 76, 0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 162, 76, 0.10) 1px, transparent 1px);
  background-size: 48px 48px;
}

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

.section--warm .divider { background: rgba(18, 41, 61, 0.16); }

/* ---------- 5. 标题组 ---------- */
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(20px, 3vw, 48px);
  align-items: end;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  flex: none;
  background: currentColor;
}

.lede {
  max-width: 38em;
  font-size: clamp(16px, 1.5vw, 18.5px);
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 6. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 30px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.grid--split-rev { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }

/* ---------- 7. 面板与标签 ---------- */
.panel {
  position: relative;
  padding: clamp(22px, 3vw, 36px);
  background: var(--trench);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  pointer-events: none;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.panel--red { background: var(--deep-red); }
.panel--warm { background: var(--warm); color: var(--ink); }
.panel--warm::before { border-color: rgba(18, 41, 61, 0.18); }

.panel__label {
  display: block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.panel--warm .panel__label { color: #8A6C1E; }

.legend-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 10px;
  background: rgba(200, 162, 76, 0.10);
  border-left: 3px solid var(--gold);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--warm);
}

.legend-tag__index { color: var(--gold); }

.legend-tag--teal {
  background: rgba(31, 111, 107, 0.22);
  border-left-color: var(--teal);
}

.legend-tag--teal .legend-tag__index { color: var(--neon); }

.tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--line);
  color: var(--stone);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.tag--gold { color: var(--gold); border-color: rgba(200, 162, 76, 0.55); }
.tag--teal { color: var(--neon); border-color: rgba(63, 211, 190, 0.45); }
.tag--red { color: #F0A6AF; border-color: rgba(140, 28, 43, 0.7); background: rgba(140, 28, 43, 0.28); }

.path {
  display: inline-block;
  padding: 2px 9px;
  border-left: 2px solid var(--gold);
  background: rgba(159, 176, 192, 0.10);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.mono {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: background-color 160ms var(--ease), color 160ms var(--ease),
              border-color 160ms var(--ease), transform 160ms var(--ease);
}

.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--deep-red); color: var(--warm); }
.btn--primary:hover { background: var(--deep-red-lit); }
.btn--ghost { background: transparent; color: var(--mist); border-color: var(--line); }
.btn--ghost:hover { color: var(--gold); border-color: var(--gold); }
.btn--teal { background: var(--teal); color: #FFFFFF; }
.btn--teal:hover { background: #267F7A; }
.btn--block { width: 100%; }

.section--warm .btn--ghost { color: var(--ink); border-color: rgba(18, 41, 61, 0.28); }
.section--warm .btn--ghost:hover { color: var(--deep-red); border-color: var(--deep-red); }

/* ---------- 9. 面包屑 ---------- */
.breadcrumb { padding-top: clamp(16px, 2vw, 26px); }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 10px;
  color: rgba(159, 176, 192, 0.5);
}

.breadcrumb__link { border-bottom: 1px solid transparent; }
.breadcrumb__link:hover { color: var(--neon); border-bottom-color: var(--neon); }
.breadcrumb__item[aria-current="page"] { color: var(--warm); }

/* ---------- 10. 正文容器 ---------- */
.prose {
  width: 100%;
  max-width: 38em;
  font-size: 17px;
  line-height: 1.85;
}

.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.45em; }
.prose strong { color: var(--warm); font-weight: 700; }
.prose a { color: var(--gold); border-bottom: 1px solid rgba(200, 162, 76, 0.45); }
.prose a:hover { color: var(--neon); border-bottom-color: var(--neon); }

.prose ul { padding-left: 0; }
.prose li { position: relative; padding-left: 24px; }
.prose li + li { margin-top: 0.5em; }

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 11px;
  height: 1px;
  background: var(--gold);
}

.section--warm .prose { color: #35434F; }
.section--warm .prose strong { color: var(--deep-red); }

/* ---------- 11. 折叠面板 ---------- */
.fold {
  border-top: 1px solid var(--line-soft);
}

.fold:last-child { border-bottom: 1px solid var(--line-soft); }

.fold__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 4px;
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  color: var(--mist);
  transition: color 160ms var(--ease);
}

.fold__summary::-webkit-details-marker { display: none; }
.fold__summary:hover { color: var(--gold); }

.fold__summary::after {
  content: "";
  flex: none;
  width: 11px;
  height: 11px;
  margin-left: auto;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform 220ms var(--ease);
}

.fold[open] > .fold__summary::after { transform: rotate(-135deg); }

.fold__body {
  padding: 0 4px 24px;
  color: var(--stone);
}

.fold__body > * + * { margin-top: 0.9em; }
.fold[open] .fold__body > * { animation: foldIn 260ms var(--ease) both; }

@keyframes foldIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

.section--warm .fold { border-color: rgba(18, 41, 61, 0.16); }
.section--warm .fold__summary { color: var(--ink); }
.section--warm .fold__body { color: #4A5A68; }

/* ---------- 12. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--trench);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }

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

.media__ph {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  padding: 18px;
  background:
    linear-gradient(135deg, var(--trench) 0%, #0E2233 58%, rgba(31, 111, 107, 0.36) 100%),
    repeating-linear-gradient(90deg, rgba(200, 162, 76, 0.14) 0 1px, transparent 1px 48px);
  color: var(--stone);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-align: center;
}

.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 8px 16px;
  background: rgba(10, 26, 42, 0.84);
  color: var(--warm);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 13. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 12px 18px;
  background: var(--neon);
  color: var(--night);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform 180ms var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- 14. 页头 ---------- */
.bay-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--night);
  border-bottom: 1px solid var(--line);
}

.bay-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold), var(--neon));
  pointer-events: none;
}

.bay-topbar {
  background: var(--deep-red);
  border-bottom: 1px solid rgba(10, 26, 42, 0.45);
}

.bay-topbar__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 9px var(--gutter);
  font-size: 13px;
  line-height: 1.5;
}

.bay-topbar__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.bay-mark {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--warm);
}

.bay-topbar__sep {
  width: 1px;
  height: 12px;
  flex: none;
  background: rgba(240, 244, 248, 0.35);
}

.bay-topbar__tagline {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(240, 244, 248, 0.80);
}

.bay-device {
  margin-left: auto;
  padding-left: 16px;
  border-left: 1px solid rgba(240, 244, 248, 0.30);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: rgba(240, 244, 248, 0.78);
  white-space: nowrap;
}

.bay-utility__list {
  display: flex;
  gap: 18px;
}

.bay-utility__link {
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font-size: 12.5px;
  color: rgba(240, 244, 248, 0.86);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.bay-utility__link:hover {
  color: #FFFFFF;
  border-bottom-color: var(--gold);
}

.bay-navbar { background: var(--night); }

.bay-navbar__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  max-width: var(--shell);
  margin-inline: auto;
  min-height: 76px;
  padding-inline: var(--gutter);
}

.bay-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
}

.bay-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  background: var(--deep-red);
  color: var(--warm);
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(200, 162, 76, 0.62);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.bay-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.bay-brand__name {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.bay-brand__sub {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.bay-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 11px 15px;
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
}

.bay-nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: none;
}

.bay-nav-toggle__bars::before,
.bay-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 200ms var(--ease);
}

.bay-nav-toggle__bars::before { top: 0; }
.bay-nav-toggle__bars::after { bottom: 0; }

.bay-header[data-open] .bay-nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.bay-header[data-open] .bay-nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }
.bay-header[data-open] .bay-nav-toggle { border-color: var(--gold); color: var(--gold); }

.bay-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}

.bay-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: nav;
}

.bay-nav__link {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 24px 12px;
  border-bottom: 2px solid transparent;
  font-size: 15px;
  color: var(--stone);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.bay-nav__link::before {
  counter-increment: nav;
  content: "0" counter(nav);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--gold);
  opacity: 0.72;
}

.bay-nav__link:hover { color: var(--mist); }

.bay-nav__link[aria-current="page"] {
  color: var(--mist);
  border-bottom-color: var(--gold);
}

.bay-nav__link[aria-current="page"]::before {
  color: var(--neon);
  opacity: 1;
}

.bay-nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 22px;
  border-left: 1px solid var(--line-soft);
}

/* ---------- 15. 页脚 ---------- */
.bay-footer {
  position: relative;
  background: var(--night);
  border-top: 1px solid var(--line);
}

.bay-footer::before {
  content: "";
  display: block;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 48px);
  opacity: 0.45;
}

.bay-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(28px, 4vw, 64px);
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(40px, 5vw, 64px) var(--gutter) clamp(28px, 3vw, 40px);
}

.bay-footer__note {
  max-width: 30em;
  margin-top: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

.bay-footer__meta {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(159, 176, 192, 0.85);
}

.bay-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.bay-footer__title {
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.bay-footer__list > li + li { margin-top: 10px; }

.bay-footer__link {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font-size: 15px;
  color: var(--stone);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.bay-footer__link:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.bay-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 28px;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 22px var(--gutter) clamp(34px, 4vw, 48px);
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--stone);
}

.bay-footer__contact { color: var(--warm); }
.bay-footer__address { color: rgba(159, 176, 192, 0.85); }

.bay-footer__legal {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(159, 176, 192, 0.72);
}

/* ---------- 16. 返回顶部 ---------- */
.bay-totop {
  position: fixed;
  right: clamp(16px, 3vw, 34px);
  bottom: clamp(16px, 3vw, 34px);
  z-index: 90;
  padding: 11px 16px;
  border: 1px solid rgba(200, 162, 76, 0.55);
  background: var(--deep-red);
  color: var(--warm);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: opacity 200ms var(--ease), transform 200ms var(--ease),
              background-color 160ms var(--ease), visibility 0s linear 200ms;
}

.bay-totop[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.bay-totop:hover { background: var(--deep-red-lit); }

/* ---------- 17. 滚动显现 ---------- */
[data-reveal] {
  transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}

html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
}

html.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 18. 焦点与可访问性 ---------- */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--neon);
  outline-offset: 3px;
}

.btn:focus-visible,
.tag:focus-visible,
.bay-nav-toggle:focus-visible,
.bay-totop:focus-visible,
.bay-brand__mark:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--neon);
}

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1100px) {
  .bay-nav-toggle { display: inline-flex; }

  .bay-nav {
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    transition: max-height 280ms var(--ease), opacity 180ms linear, visibility 0s linear 280ms;
  }

  .bay-header[data-open] .bay-nav {
    max-height: 74vh;
    overflow-y: auto;
    visibility: visible;
    opacity: 1;
    transition: max-height 280ms var(--ease), opacity 200ms linear, visibility 0s;
  }

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

  .bay-nav__item { border-bottom: 1px solid var(--line-soft); }

  .bay-nav__link {
    padding: 15px 2px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    font-size: 16px;
  }

  .bay-nav__link[aria-current="page"] {
    padding-left: 12px;
    border-bottom: 0;
    border-left-color: var(--gold);
  }

  .bay-nav__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-top: 18px;
    padding-left: 0;
    border-left: 0;
  }

  .bay-navbar__inner {
    min-height: 66px;
    padding-bottom: 14px;
  }
}

@media (max-width: 900px) {
  .section-head { grid-template-columns: 1fr; align-items: start; }
  .grid--2,
  .grid--3,
  .grid--split,
  .grid--split-rev { grid-template-columns: 1fr; }
  .bay-footer__inner { grid-template-columns: 1fr; }
  .bay-footer__legal { margin-left: 0; }
}

@media (max-width: 820px) {
  .bay-device { display: none; }
  .bay-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  body { font-size: 16.5px; }
  .bay-topbar__tagline { display: none; }
  .bay-utility__list { gap: 14px; }
  .bay-brand__sub { display: none; }
  .bay-footer__nav { grid-template-columns: 1fr; gap: 26px; }
  .bay-footer__base { flex-direction: column; gap: 8px; }
  .media--wide { aspect-ratio: 16 / 10; }
  .section { padding-block: clamp(44px, 12vw, 72px); }
}

/* ---------- 20. 降低动态效果 ---------- */
@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;
  }

  html.has-js [data-reveal] { opacity: 1; transform: none; }
  .bay-totop { transform: none; }
}