/* ============================================================
   BBIN品牌坐标 — 共享站点样式 / assets/site.css
   夜间控制台 · 坐标落点体系
   ============================================================ */

/* ---------- 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, figure, blockquote, dl, dd, ul, ol { margin: 0; }

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

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

button { font: inherit; color: inherit; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #05070D;
  --ink-800: #0A1020;
  --panel: #111A2E;
  --cobalt: #245BFF;
  --cyan: #36E0E8;
  --orange: #FF7A1A;
  --green: #4DE3A4;
  --line: #1B2A44;
  --line-soft: rgba(27, 42, 68, 0.55);
  --text: #F4F7FF;
  --muted: #A7B4D0;

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo,
    Consolas, monospace;

  --shell: 1280px;
  --gutter: clamp(18px, 4vw, 56px);
  --radius-pill: 999px;
  --ease: cubic-bezier(0.22, 0.7, 0.3, 1);

  --fs-display: clamp(44px, 7.4vw, 104px);
  --fs-h1: clamp(34px, 4.6vw, 62px);
  --fs-h2: clamp(26px, 3.4vw, 42px);
}

/* ---------- 3. 基础排版与画布 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.005em;
  color: var(--text);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 82% -10%, rgba(36, 91, 255, 0.22), transparent 62%),
    radial-gradient(820px 520px at 4% 8%, rgba(54, 224, 232, 0.08), transparent 62%),
    linear-gradient(to right, rgba(27, 42, 68, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 42, 68, 0.5) 1px, transparent 1px);
  background-size: auto, auto, 96px 96px, 96px 96px;
  background-position: center top, center top, center top, center top;
  background-attachment: fixed, fixed, fixed, fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--text);
  text-wrap: balance;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }

p { max-width: 68ch; }

a { color: var(--cyan); text-decoration: none; }

strong { font-weight: 700; }

::selection {
  background: rgba(36, 91, 255, 0.55);
  color: #FFFFFF;
}

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

/* ---------- 4. 工具类 ---------- */
.container {
  width: 100%;
  max-width: calc(var(--shell) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(48px, 7vw, 96px); }

.t-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

.t-lead {
  font-size: clamp(17px, 1.4vw, 19px);
  line-height: 1.75;
  color: var(--muted);
  max-width: 62ch;
}

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

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. 标签 / 展览说明牌 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.72;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(17, 26, 46, 0.72);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.tag--cyan { color: var(--cyan); border-color: rgba(54, 224, 232, 0.45); }
.tag--orange { color: var(--orange); border-color: rgba(255, 122, 26, 0.45); }
.tag--green { color: var(--green); border-color: rgba(77, 227, 164, 0.45); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s, color 0.18s, border-color 0.18s,
    box-shadow 0.18s, transform 0.18s var(--ease);
}

.btn--primary {
  background: var(--cobalt);
  color: #FFFFFF;
  box-shadow: 0 16px 36px -20px rgba(36, 91, 255, 0.95);
}

.btn--primary:hover {
  background: #3A6DFF;
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: rgba(54, 224, 232, 0.7);
  color: var(--cyan);
}

.btn--signal {
  background: var(--orange);
  color: #1A0D02;
  box-shadow: 0 16px 36px -22px rgba(255, 122, 26, 0.95);
}

.btn--signal:hover {
  background: #FF8F3C;
  transform: translateY(-1px);
}

/* ---------- 7. 坐标十字装饰 ---------- */
.crosshair {
  position: relative;
  display: inline-block;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(54, 224, 232, 0.6);
  border-radius: 50%;
  box-shadow: inset 0 0 0 3px rgba(54, 224, 232, 0.07);
}

.crosshair::before,
.crosshair::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  opacity: 0.85;
}

.crosshair::before {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
}

.crosshair::after {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  transform: translateY(-50%);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s;
}

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

.breadcrumb-sep { opacity: 0.38; }

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

/* ---------- 9. 网格与图片容器 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2px;
  background:
    linear-gradient(135deg, rgba(36, 91, 255, 0.18), rgba(10, 16, 32, 0.92)),
    var(--panel);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background:
    linear-gradient(to right, var(--line) 1px, transparent 1px) 0 0 / 25% 100%,
    linear-gradient(to bottom, var(--line) 1px, transparent 1px) 0 0 / 100% 25%;
}

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

/* ---------- 10. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  padding: clamp(10px, 1.4vw, 18px) var(--gutter);
  background: linear-gradient(
    to bottom,
    rgba(5, 7, 13, 0.96) 0%,
    rgba(5, 7, 13, 0.82) 58%,
    rgba(5, 7, 13, 0) 100%
  );
  backdrop-filter: blur(12px) saturate(130%);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cobalt), var(--cyan));
  pointer-events: none;
}

.header-shell {
  position: relative;
  max-width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding: 8px 8px 8px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background:
    linear-gradient(90deg, rgba(54, 224, 232, 0.08), transparent 40%),
    linear-gradient(140deg, rgba(17, 26, 46, 0.95), rgba(10, 16, 32, 0.93));
  box-shadow:
    0 26px 64px -44px rgba(0, 0, 0, 1),
    inset 0 1px 0 rgba(244, 247, 255, 0.06);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(54, 224, 232, 0.55);
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 4px rgba(54, 224, 232, 0.07),
    0 0 0 3px rgba(5, 7, 13, 0.9),
    0 0 0 4px rgba(54, 224, 232, 0.16);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.brand-mark::before {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
}

.brand-mark::after {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  transform: translateY(-50%);
}

.brand-text {
  display: block;
  min-width: 0;
}

.brand-name {
  display: block;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  line-height: 1.4;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(167, 180, 208, 0.75);
  white-space: nowrap;
}

/* 导航 */
.site-nav {
  justify-self: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.01em;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s, background-color 0.18s, box-shadow 0.18s;
}

.nav-link::before {
  content: "";
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0;
  transition: opacity 0.18s, box-shadow 0.18s;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(36, 91, 255, 0.16);
}

.nav-link[aria-current="page"] {
  color: var(--text);
  background: rgba(36, 91, 255, 0.22);
  box-shadow: inset 0 0 0 1px rgba(36, 91, 255, 0.55);
}

.nav-link[aria-current="page"]::before {
  opacity: 1;
  box-shadow: 0 0 8px rgba(54, 224, 232, 0.9);
}

/* 帮助中心锚定项 */
.nav-item--help .nav-link {
  color: var(--cyan);
  background: rgba(54, 224, 232, 0.07);
  box-shadow: inset 0 0 0 1px rgba(54, 224, 232, 0.5);
}

.nav-item--help .nav-link:hover {
  color: var(--cyan);
  background: rgba(54, 224, 232, 0.16);
  box-shadow:
    inset 0 0 0 1px rgba(54, 224, 232, 0.75),
    0 0 22px -8px rgba(54, 224, 232, 0.85);
}

.nav-item--help .nav-link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(54, 224, 232, 0.2);
  box-shadow:
    inset 0 0 0 1px var(--cyan),
    0 0 24px -10px rgba(54, 224, 232, 0.9);
}

/* 右侧状态与行动 */
.header-actions {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 12px;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow:
    0 0 0 3px rgba(77, 227, 164, 0.16),
    0 0 10px rgba(77, 227, 164, 0.85);
  animation: statusPulse 3.6s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--cobalt);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-decoration: none;
  box-shadow:
    0 0 0 1px rgba(36, 91, 255, 0.55),
    0 14px 28px -16px rgba(36, 91, 255, 0.95);
  transition: background-color 0.18s, transform 0.18s var(--ease), box-shadow 0.18s;
}

.header-cta::after {
  content: "↗";
  font-size: 13px;
  opacity: 0.85;
}

.header-cta:hover {
  background: #3A6DFF;
  transform: translateY(-1px);
  box-shadow:
    0 0 0 1px rgba(36, 91, 255, 0.75),
    0 18px 34px -16px rgba(36, 91, 255, 1);
}

/* 移动端开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(36, 91, 255, 0.14);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.18s, border-color 0.18s, color 0.18s;
}

.nav-toggle:hover {
  background: rgba(36, 91, 255, 0.26);
  border-color: rgba(36, 91, 255, 0.6);
}

.nav-toggle[aria-expanded="true"] {
  background: rgba(54, 224, 232, 0.16);
  border-color: rgba(54, 224, 232, 0.6);
  color: var(--cyan);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.2s var(--ease), top 0.2s var(--ease), bottom 0.2s var(--ease);
}

.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.nav-toggle-word { line-height: 1; }

/* 跳转链接 */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 400;
  padding: 11px 20px;
  border-radius: 4px;
  background: var(--cyan);
  color: #04121A;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}

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

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 120px);
  padding: clamp(52px, 7vw, 88px) var(--gutter) clamp(28px, 3vw, 40px);
  overflow: hidden;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(720px 340px at 50% 0%, rgba(36, 91, 255, 0.16), transparent 70%),
    linear-gradient(to bottom, rgba(10, 16, 32, 0.96), var(--ink-800));
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: clamp(38px, 7vw, 76px);
  transform: translateX(-50%);
  background: linear-gradient(to bottom, var(--cyan), rgba(54, 224, 232, 0));
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(54, 224, 232, 0.9);
  transform: translate(-50%, -50%);
}

.footer-shell {
  position: relative;
  max-width: var(--shell);
  margin-inline: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, 1.25fr) minmax(0, 2fr);
  gap: clamp(34px, 5vw, 76px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.brand--footer .brand-mark {
  width: 36px;
  height: 36px;
}

.brand--footer .brand-name { font-size: 19px; }

.brand--footer .brand-sub { font-size: 10px; }

.footer-note {
  margin: 0;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.footer-coords {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(54, 224, 232, 0.72);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 42px);
}

.footer-col { min-width: 0; }

.footer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-title::before {
  content: "";
  width: 14px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}

.footer-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-link {
  display: inline-block;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s, transform 0.18s var(--ease);
}

.footer-link:hover {
  color: var(--cyan);
  transform: translateX(2px);
}

.footer-col--contact .footer-list { gap: 14px; }

.footer-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(167, 180, 208, 0.6);
}

.footer-val {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  margin-top: clamp(36px, 5vw, 62px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.footer-base p { margin: 0; }

.footer-copy { color: var(--muted); }

.footer-icp {
  padding: 3px 10px;
  border: 1px solid rgba(54, 224, 232, 0.28);
  border-radius: 2px;
  color: rgba(54, 224, 232, 0.82);
}

.footer-domain { margin-left: auto; opacity: 0.6; }

/* ---------- 12. 滚动显现 ---------- */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

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

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1180px) {
  .header-status { display: none; }
}

@media (max-width: 1020px) {
  .header-shell {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 8px 10px 8px 16px;
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(160deg, rgba(17, 26, 46, 0.99), rgba(10, 16, 32, 0.99));
    box-shadow: 0 44px 80px -42px #000000;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.24s var(--ease), visibility 0.2s;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-item { width: 100%; }

  .nav-link {
    width: 100%;
    padding: 13px 16px;
    border-radius: 14px;
    font-size: 15.5px;
    justify-content: flex-start;
  }

  .nav-link[aria-current="page"]::before { opacity: 1; }

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

@media (max-width: 860px) {
  body { font-size: 16px; }

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

@media (max-width: 760px) {
  .header-cta { display: none; }
  .footer-domain { margin-left: 0; }
}

@media (max-width: 560px) {
  .brand-name { font-size: 15.5px; }
  .brand-sub { font-size: 8.5px; letter-spacing: 0.16em; }
  .brand-mark { width: 28px; height: 28px; }

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

  .grid-12 { grid-template-columns: minmax(0, 1fr); }

  .breadcrumb { font-size: 10.5px; letter-spacing: 0.08em; }
}

/* ---------- 14. 减少动态效果 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .status-dot { animation: none; opacity: 1; }

  html.js-reveal [data-reveal],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .footer-link:hover,
  .btn:hover,
  .header-cta:hover { transform: none; }
}