/* =========================================================
   九博娱乐 · Site Kit 共享样式
   文件：/assets/site.css
   职责：reset / 变量 / 排版 / 页头 / 页脚 / 通用组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; color-scheme: dark; scrollbar-width: thin; scrollbar-color: #4A3B6B #120720; scroll-padding-top: calc(var(--gb-header-h) + 20px); }
body, h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, picture, video, canvas { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { text-decoration: none; }

/* ---------- 2. CSS Variables ---------- */
:root {
  --gb-bg: #1A0B2E;
  --gb-bg-deep: #120720;
  --gb-card: #2D1B4E;
  --gb-card-hover: #3A2566;
  --gb-gold: #D4AF37;
  --gb-gold-light: #F0D78C;
  --gb-orange: #FF7A00;
  --gb-text: #E8E0F0;
  --gb-text-muted: #B0A2C0;
  --gb-border: #4A3B6B;
  --gb-link: #00D4FF;
  --gb-gold-gradient: linear-gradient(135deg, #D4AF37 0%, #F0D78C 50%, #D4AF37 100%);
  --gb-orange-gradient: linear-gradient(135deg, #FF7A00 0%, #FF9A40 100%);
  --gb-glass-bg: rgba(26, 11, 46, 0.88);
  --gb-glass-border: rgba(212, 175, 55, 0.22);
  --gb-radius-pill: 999px;
  --gb-radius-lg: 28px;
  --gb-radius-md: 16px;
  --gb-radius-sm: 10px;
  --gb-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --gb-header-h: 72px;
  --gb-container: 1240px;
  --gb-section-space: 72px;
  --gb-font-title: 'Archivo Black', Impact, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --gb-font-body: 'Inter', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --gb-font-mono: 'Roboto Mono', 'SFMono-Regular', Consolas, monospace;
}

/* ---------- 3. Base Typography & Body ---------- */
body {
  background:
    radial-gradient(1100px 560px at 92% -8%, rgba(58, 37, 102, 0.55), transparent 62%),
    radial-gradient(760px 420px at -6% 18%, rgba(212, 175, 55, 0.06), transparent 58%),
    var(--gb-bg);
  color: var(--gb-text);
  font-family: var(--gb-font-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.8), transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.8), transparent 78%);
}

h1, h2, h3, h4 {
  font-family: var(--gb-font-title);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.01em;
}

a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--gb-link);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--gb-gold); color: #1A0B2E; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--gb-bg-deep); }
::-webkit-scrollbar-thumb { background: #4A3B6B; border-radius: 8px; border: 2px solid var(--gb-bg-deep); }
::-webkit-scrollbar-thumb:hover { background: var(--gb-gold); }

/* ---------- 4. Shared Layout ---------- */
.site-container {
  width: min(100% - 40px, var(--gb-container));
  margin-inline: auto;
}

.main-content {
  width: 100%;
  min-height: 60vh;
  padding-top: calc(var(--gb-header-h) + 46px);
}

#main-content { scroll-margin-top: calc(var(--gb-header-h) + 24px); }

.section { padding-block: var(--gb-section-space); }

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--gb-font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gb-gold);
  text-transform: uppercase;
}
.section-label::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--gb-gold-gradient);
}

.section-title {
  font-family: var(--gb-font-title);
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.05;
  color: var(--gb-text);
}

.section-title--gold {
  background: var(--gb-gold-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.display-title {
  font-family: var(--gb-font-title);
  font-size: clamp(44px, 7vw, 110px);
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--gb-text);
}

.lead {
  font-size: 18px;
  line-height: 1.75;
  color: var(--gb-text-muted);
  max-width: 44em;
}

/* ---------- 5. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 9999;
  transform: translate(-50%, -160%);
  background: var(--gb-gold-gradient);
  color: #1A0B2E;
  padding: 10px 20px;
  border-radius: var(--gb-radius-pill);
  font-size: 14px;
  font-weight: 700;
  box-shadow: var(--gb-shadow);
  transition: transform 0.25s ease;
}
.skip-link:focus-visible {
  transform: translate(-50%, 0);
  outline-offset: 2px;
}

/* ---------- 6. Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  padding: 14px 20px 0;
  pointer-events: none;
}

.header-inner {
  max-width: var(--gb-container);
  margin-inline: auto;
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  height: var(--gb-header-h);
  padding: 8px 10px 8px 18px;
  border-radius: var(--gb-radius-pill);
  background: var(--gb-glass-bg);
  border: 1px solid var(--gb-glass-border);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  pointer-events: auto;
}

.header-inner::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 50%;
  width: 10px;
  height: 10px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--gb-gold);
  box-shadow: 0 0 16px rgba(212, 175, 55, 0.85);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
  color: var(--gb-text);
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--gb-gold-gradient);
  color: #1A0B2E;
  font-family: var(--gb-font-title);
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 0 24px rgba(212, 175, 55, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  white-space: nowrap;
}

.brand-name {
  font-family: var(--gb-font-title);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--gb-text);
}

.brand-sub {
  font-family: var(--gb-font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--gb-gold);
  text-transform: uppercase;
}

.site-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 14px;
  border-radius: var(--gb-radius-pill);
  font-size: 14px;
  color: var(--gb-text-muted);
  transition: color 0.25s, background 0.25s, transform 0.25s;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--gb-gold-light);
  background: rgba(212, 175, 55, 0.1);
  transform: translateY(-1px);
}
.nav-link[aria-current="page"] {
  color: #1A0B2E;
  background: var(--gb-gold-gradient);
  font-weight: 700;
}
.nav-link[aria-current="page"] .nav-index {
  color: rgba(26, 11, 46, 0.7);
}

.nav-index {
  font-family: var(--gb-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--gb-gold);
  opacity: 0.75;
}

/* ---------- 7. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: var(--gb-radius-pill);
  border: 1px solid transparent;
  font-family: var(--gb-font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s, border-color 0.25s;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--gb-orange-gradient);
  color: #1A0B2E;
  box-shadow: 0 8px 24px rgba(255, 122, 0, 0.32);
}
.btn-primary:hover {
  box-shadow: 0 12px 30px rgba(255, 122, 0, 0.45);
}

.btn-ghost {
  background: transparent;
  border-color: var(--gb-border);
  color: var(--gb-text);
}
.btn-ghost:hover {
  border-color: var(--gb-gold);
  color: var(--gb-gold-light);
}

.header-cta { flex-shrink: 0; }

.cta-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1A0B2E;
  display: inline-block;
  animation: ctaPulse 2s ease-in-out infinite;
}

/* ---------- 8. Nav Toggle ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border: 1px solid var(--gb-glass-border);
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.1);
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--gb-gold-light);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle-bar:nth-child(1) { width: 18px; }
.nav-toggle-bar:nth-child(2) { width: 12px; }
.nav-toggle-bar:nth-child(3) { width: 18px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 9. Scroll Progress & Back Top ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gb-gold-gradient);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.6);
  z-index: 700;
  transition: width 0.08s linear;
}

.back-top {
  position: fixed;
  right: 28px;
  bottom: 32px;
  z-index: 600;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(212, 175, 55, 0.3);
  background: rgba(26, 11, 46, 0.92);
  color: var(--gb-gold);
  font-size: 20px;
  line-height: 1;
  display: grid;
  place-items: center;
  box-shadow: var(--gb-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s, border-color 0.25s, color 0.25s;
}
.back-top:hover {
  border-color: var(--gb-gold);
  color: var(--gb-gold-light);
}
.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* ---------- 10. Footer ---------- */
.site-footer {
  position: relative;
  padding: 0 20px;
  background: linear-gradient(180deg, #120720 0%, #1A0B2E 100%);
  border-top: 1px solid var(--gb-border);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  z-index: 1;
  background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.8) 30%, var(--gb-gold-light) 55%, transparent 100%);
}
.site-footer::after {
  content: "JIUBO";
  position: absolute;
  right: 0;
  bottom: -0.14em;
  z-index: 0;
  font-family: var(--gb-font-title);
  font-size: clamp(120px, 20vw, 260px);
  font-weight: 800;
  line-height: 1;
  color: rgba(212, 175, 55, 0.035);
  letter-spacing: -0.04em;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

.footer-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1.3fr 1fr;
  gap: 48px;
  max-width: var(--gb-container);
  margin-inline: auto;
  padding: 84px 0 64px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.footer-logo-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--gb-gold-gradient);
  color: #1A0B2E;
  font-family: var(--gb-font-title);
  font-size: 21px;
  font-weight: 800;
  box-shadow: 0 0 24px rgba(212, 175, 55, 0.25);
}
.footer-logo-name {
  font-family: var(--gb-font-title);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--gb-text);
}

.footer-trust {
  margin-top: 22px;
  padding-left: 16px;
  max-width: 360px;
  border-left: 2px solid var(--gb-gold);
  color: var(--gb-text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.footer-title {
  font-family: var(--gb-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gb-gold);
  margin-bottom: 18px;
  text-transform: uppercase;
}

.footer-contact-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 10px 0;
  font-size: 14px;
}
.footer-contact-label {
  flex-shrink: 0;
  min-width: 52px;
  font-family: var(--gb-font-mono);
  font-size: 12px;
  color: var(--gb-gold);
}
.footer-contact-value {
  color: var(--gb-text-muted);
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-links-list li { margin: 0; }
.footer-links-list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  color: var(--gb-text-muted);
  font-size: 15px;
  transition: color 0.25s, gap 0.25s;
}
.footer-links-list a::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--gb-gold);
  opacity: 0.65;
  transition: transform 0.25s, opacity 0.25s;
}
.footer-links-list a:hover {
  color: var(--gb-gold-light);
  gap: 14px;
}
.footer-links-list a:hover::before {
  transform: rotate(45deg);
  opacity: 1;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(74, 59, 107, 0.5);
  background: rgba(10, 4, 20, 0.3);
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  max-width: var(--gb-container);
  margin-inline: auto;
  padding: 18px 0 24px;
  font-family: var(--gb-font-mono);
  font-size: 12px;
  color: var(--gb-text-muted);
}
.footer-icp { letter-spacing: 0.08em; }

/* ---------- 11. Breadcrumbs ---------- */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
  font-family: var(--gb-font-mono);
  font-size: 13px;
  color: var(--gb-text-muted);
}
.breadcrumbs a {
  color: var(--gb-link);
  transition: color 0.25s;
}
.breadcrumbs a:hover { color: var(--gb-gold-light); }
.breadcrumbs-sep { color: var(--gb-gold); opacity: 0.7; }
.breadcrumbs-current { color: var(--gb-text); }

/* ---------- 12. Grid & Cards ---------- */
.grid-basic {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

@media (min-width: 901px) {
  .grid-card { grid-column: span 4; }
  .grid-card--3 { grid-column: span 3; }
  .grid-card--5 { grid-column: span 5; }
  .grid-card--6 { grid-column: span 6; }
  .grid-card--8 { grid-column: span 8; }
}

@media (max-width: 900px) and (min-width: 601px) {
  .grid-card,
  .grid-card--3,
  .grid-card--5,
  .grid-card--6,
  .grid-card--8 { grid-column: span 6; }
}

@media (max-width: 600px) {
  .grid-card,
  .grid-card--3,
  .grid-card--5,
  .grid-card--6,
  .grid-card--8 { grid-column: span 12; }
}

.card {
  position: relative;
  padding: 28px;
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-lg);
  background: var(--gb-card);
  transition: background 0.3s, border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.card:hover {
  background: var(--gb-card-hover);
  border-color: rgba(212, 175, 55, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.42);
}
.card-title {
  font-family: var(--gb-font-title);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--gb-text);
}

/* ---------- 13. Legend / Coordinate Lines ---------- */
.legend-line {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(74, 59, 107, 0.6);
  font-family: var(--gb-font-mono);
  font-size: 14px;
}
.legend-coord {
  color: var(--gb-gold);
  flex-shrink: 0;
}
.legend-title {
  color: var(--gb-text);
  font-family: var(--gb-font-body);
  font-size: 15px;
}

/* ---------- 14. Image Containers ---------- */
.image-cover {
  position: relative;
  overflow: hidden;
  border-radius: var(--gb-radius-md);
  background: var(--gb-card);
}
.image-cover > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.aspect-16-9 { aspect-ratio: 16 / 9; }
.aspect-4-3 { aspect-ratio: 4 / 3; }
.aspect-3-2 { aspect-ratio: 3 / 2; }
.aspect-1-1 { aspect-ratio: 1 / 1; }

.image-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background:
    repeating-linear-gradient(-45deg, rgba(212, 175, 55, 0.05) 0 1px, transparent 1px 12px),
    linear-gradient(135deg, rgba(58, 37, 102, 0.7), rgba(26, 11, 46, 0.9));
}
.image-placeholder::before {
  content: "";
  width: 38px;
  height: 38px;
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.25) 0 28%, transparent 30%);
}
.image-placeholder::after {
  content: attr(data-caption);
  font-family: var(--gb-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gb-text-muted);
  text-transform: uppercase;
}

/* ---------- 15. Reveal Animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 16. Utilities ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 17. Responsive ---------- */
@media (max-width: 1100px) {
  .site-header { padding: 12px 16px 0; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 12px);
    margin: 0;
    background: rgba(16, 7, 32, 0.98);
    border: 1px solid var(--gb-glass-border);
    border-radius: var(--gb-radius-lg);
    padding: 14px;
    box-shadow: var(--gb-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  }
  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    gap: 6px;
  }
  .nav-link {
    display: flex;
    align-items: baseline;
    gap: 12px;
    width: 100%;
    padding: 13px 18px;
    font-size: 16px;
    font-family: var(--gb-font-body);
    border-bottom: 1px solid rgba(74, 59, 107, 0.45);
    border-radius: 0;
    white-space: normal;
  }
  .nav-link:hover {
    transform: none;
    background: rgba(212, 175, 55, 0.08);
  }
  .nav-link[aria-current="page"] {
    background: var(--gb-gold-gradient);
    border-radius: var(--gb-radius-sm);
  }
  .nav-item:last-child .nav-link { border-bottom: 0; }
  .nav-index { font-size: 11px; }

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

  .header-cta { margin-left: auto; }
}

@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 44px;
    padding: 60px 0 48px;
  }
}

@media (max-width: 700px) {
  :root {
    --gb-header-h: 64px;
    --gb-section-space: 56px;
  }
  .site-header { padding: 10px 12px 0; }
  .header-inner {
    height: 64px;
    padding: 6px 8px 6px 12px;
    gap: 10px;
  }
  .brand-mark { width: 40px; height: 40px; font-size: 20px; }
  .brand-name { font-size: 16px; }
  .brand-sub { display: none; }
  .header-cta { padding: 10px 16px; font-size: 13px; }

  .site-container { width: min(100% - 28px, var(--gb-container)); }
  .back-top { right: 18px; bottom: 20px; width: 46px; height: 46px; font-size: 18px; }

  .card { padding: 20px; }
}

@media (max-width: 480px) {
  .cta-pulse { display: none; }
  .brand-lockup { gap: 8px; }
  .header-cta { padding: 10px 14px; }
}

/* ---------- 18. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .scroll-progress { transition: none; }
  .back-top { transition: none; }
  [data-reveal] { opacity: 1; transform: none; }
}