/* ============================================================
   AB娱乐 · 全站共享样式 · /assets/site.css
   设计语言：杂志报头 / 展览标签 / 云南梯田纹理
   ============================================================ */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* Brand Color Palette */
  --color-deep-blue: #0B1B3A;
  --color-gold: #D4B84D;
  --color-orange: #F77D2E;
  --color-electric: #2F80FF;
  --color-peacock: #19D3DA;
  --color-violet: #8B5CF6;
  --color-cream: #FFF9EF;
  --color-gray: #F4F1EC;
  --color-ink: #1B1B1F;

  /* Typography */
  --font-headings: Impact, 'Arial Black', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-accents: 'IBM Plex Mono', 'Courier New', monospace;

  /* Font Sizes */
  --fs-display: clamp(2.5rem, 5vw, 4rem);
  --fs-h1: clamp(1.75rem, 3.5vw, 2.75rem);
  --fs-h2: clamp(1.375rem, 2.5vw, 2rem);
  --fs-h3: clamp(1.125rem, 1.75vw, 1.5rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-micro: 0.75rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;

  /* Layout */
  --content-width: 1400px;
  --content-narrow: 720px;

  /* Borders & Shadows */
  --border-width: 2px;
  --radius: 4px;
  --shadow-hard: 5px 5px 0 rgba(27, 27, 31, 0.2);
  --shadow-med: 3px 3px 0 rgba(27, 27, 31, 0.15);

  /* Motion */
  --dur-fast: 150ms;
  --dur-med: 300ms;
  --dur-slow: 600ms;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ---------- 2. Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--color-ink);
  background: var(--color-cream);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body > .site-footer {
  margin-top: auto;
}

main {
  display: block;
  flex: 1 0 auto;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-deep-blue);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--fs-h1); line-height: 1.1; }
h2 { font-size: var(--fs-h2); line-height: 1.2; }
h3 { font-size: var(--fs-h3); line-height: 1.3; }

p {
  margin-bottom: var(--space-md);
  max-width: 65ch;
}

ul, ol {
  list-style: none;
}

a {
  color: var(--color-electric);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(47, 128, 255, 0.3);
  transition: color var(--dur-fast) var(--ease);
}

a:hover {
  color: var(--color-deep-blue);
  text-decoration-color: var(--color-orange);
}

strong {
  font-weight: 700;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

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

/* ---------- 3. Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md) var(--space-lg);
}

.grid-col-3 { grid-column: span 3; }
.grid-col-4 { grid-column: span 4; }
.grid-col-6 { grid-column: span 6; }
.grid-col-8 { grid-column: span 8; }
.grid-col-9 { grid-column: span 9; }
.grid-col-12 { grid-column: span 12; }

/* ---------- 4. Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 2000;
  background: var(--color-orange);
  color: var(--color-cream);
  padding: 12px 24px;
  font-weight: 700;
  font-size: var(--fs-small);
  border-radius: 0 0 var(--radius) 0;
  text-decoration: none;
  transition: top var(--dur-med) var(--ease);
}

.skip-link:focus-visible {
  top: 0;
  color: var(--color-cream);
  outline: 3px solid var(--color-gold);
  outline-offset: -3px;
}

/* ---------- 5. Scroll Progress ---------- */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-orange) 100%);
  z-index: 3;
  border-radius: 0 3px 3px 0;
}

/* ---------- 6. Site Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-deep-blue);
  border-bottom: var(--border-width) solid var(--color-gold);
  box-shadow: 0 4px 0 rgba(27, 27, 31, 0.25);
}

.site-header[data-scrolled] {
  background: rgba(11, 27, 58, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--color-gold);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.header-inner {
  position: relative;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Masthead */
.masthead {
  transition: padding var(--dur-med) var(--ease);
  padding: var(--space-sm) 0 var(--space-md);
}

.brand-mark {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--color-gold);
  border: var(--border-width) solid var(--color-gold);
  padding: 6px 36px 8px;
  background: var(--color-deep-blue);
  position: relative;
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
  box-shadow: var(--shadow-med);
}

.brand-mark:hover {
  color: var(--color-gold);
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 rgba(212, 184, 77, 0.2);
}

.brand-chinese {
  font-family: var(--font-headings);
  font-size: 2rem;
  line-height: 1.1;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
}

.brand-tagline {
  font-family: var(--font-accents);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-peacock);
  margin-top: 2px;
  white-space: nowrap;
}

/* Header scrolled state */
.site-header[data-scrolled] .masthead {
  padding: 2px 0;
}

.site-header[data-scrolled] .brand-mark {
  padding: 4px 24px 5px;
  border-width: 1px;
  box-shadow: none;
  transform: none;
}

.site-header[data-scrolled] .brand-chinese {
  font-size: 1.25rem;
}

.site-header[data-scrolled] .brand-tagline {
  display: none;
}

.site-header[data-scrolled] .header-inner {
  padding-top: 8px;
  padding-bottom: 8px;
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--color-gold);
  border-radius: var(--radius);
  color: var(--color-gold);
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.nav-toggle:hover {
  background: var(--color-gold);
  color: var(--color-deep-blue);
}

.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
}

.nav-toggle-line {
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* Site Nav */
.site-nav {
  width: 100%;
}

.nav-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.nav-item {
  position: relative;
}

.nav-item + .nav-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(212, 184, 77, 0.3);
}

.nav-item a {
  display: inline-block;
  padding: 10px 20px;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-cream);
  text-decoration: none;
  letter-spacing: 0.04em;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.nav-item a:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
  background: rgba(212, 184, 77, 0.06);
}

.nav-item a[aria-current="page"] {
  color: var(--color-gold);
  border-bottom-color: var(--color-orange);
  font-weight: 700;
}

/* ---------- 7. Site Footer ---------- */
.site-footer {
  background: var(--color-deep-blue);
  color: var(--color-cream);
  border-top: 4px solid var(--color-gold);
  position: relative;
}

.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: repeating-linear-gradient(90deg,
    var(--color-peacock) 0 4px,
    transparent 4px 8px,
    var(--color-violet) 8px 12px,
    transparent 12px 16px);
  opacity: 0.4;
}

.footer-top {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.footer-cols {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.2fr 1fr;
  gap: var(--space-xl) var(--space-lg);
}

.footer-col-brand {
  padding-right: var(--space-lg);
}

.footer-brand-link {
  font-family: var(--font-headings);
  font-size: 2.25rem;
  color: var(--color-gold);
  text-decoration: none;
  display: inline-block;
  border-bottom: 2px solid var(--color-gold);
  padding-bottom: 4px;
  line-height: 1.1;
  transition: color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.footer-brand-link:hover {
  color: var(--color-orange);
  border-bottom-color: var(--color-orange);
  text-decoration: none;
  transform: translateX(2px);
}

.footer-tagline {
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-peacock);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-about {
  font-size: var(--fs-small);
  color: rgba(255, 249, 239, 0.75);
  line-height: 1.8;
  margin-bottom: 0;
  max-width: 36ch;
}

.footer-heading {
  font-family: var(--font-headings);
  font-size: var(--fs-h3);
  color: var(--color-gold);
  margin-bottom: var(--space-md);
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: rgba(255, 249, 239, 0.85);
  text-decoration: none;
  font-size: var(--fs-small);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}

.footer-links a:hover {
  color: var(--color-gold);
  border-bottom-color: rgba(212, 184, 77, 0.4);
  padding-left: 6px;
  text-decoration: none;
}

.footer-links li {
  font-size: var(--fs-small);
  color: rgba(255, 249, 239, 0.7);
  line-height: 1.6;
}

.footer-links li a {
  padding-left: 0;
}

.footer-statement {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(212, 184, 77, 0.2);
  font-size: var(--fs-micro);
  line-height: 1.7;
  color: rgba(255, 249, 239, 0.5);
  max-width: 80ch;
}

.footer-bottom {
  background: rgba(0, 0, 0, 0.25);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm) var(--space-lg);
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.05em;
  color: rgba(255, 249, 239, 0.55);
}

.footer-bottom p {
  margin: 0;
}

.footer-copyright {
  color: rgba(255, 249, 239, 0.8);
}

/* ---------- 8. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: var(--fs-small);
  font-weight: 700;
  font-family: var(--font-body);
  line-height: 1.4;
  border: var(--border-width) solid var(--color-deep-blue);
  border-radius: var(--radius);
  text-decoration: none;
  box-shadow: var(--shadow-med);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 rgba(27, 27, 31, 0.25);
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 rgba(27, 27, 31, 0.2);
}

.btn-primary {
  background: var(--color-orange);
  color: var(--color-deep-blue);
  border-color: var(--color-orange);
}

.btn-primary:hover {
  background: var(--color-deep-blue);
  color: var(--color-cream);
  border-color: var(--color-deep-blue);
}

.btn-outline {
  background: transparent;
  color: var(--color-deep-blue);
  border-color: var(--color-deep-blue);
}

.btn-outline:hover {
  background: var(--color-electric);
  color: var(--color-cream);
  border-color: var(--color-electric);
}

/* ---------- 9. Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-lg);
  color: var(--color-deep-blue);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 6px;
  color: var(--color-peacock);
}

.breadcrumb-item a {
  color: var(--color-electric);
  text-decoration: none;
}

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

.breadcrumb-item[aria-current="page"] {
  color: var(--color-deep-blue);
  font-weight: 700;
}

/* ---------- 10. Page Header ---------- */
.page-header {
  background: var(--color-deep-blue);
  border-bottom: var(--border-width) solid var(--color-gold);
  padding: var(--space-xl) 0;
  margin-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 35%;
  height: 100%;
  background: repeating-linear-gradient(135deg,
    rgba(25, 211, 218, 0.12) 0 2px,
    transparent 2px 8px,
    rgba(139, 92, 246, 0.1) 8px 10px,
    transparent 10px 16px);
  pointer-events: none;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-title {
  font-size: var(--fs-display);
  color: var(--color-gold);
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-sm);
}

.page-subtitle {
  font-size: var(--fs-body);
  color: rgba(255, 249, 239, 0.85);
  max-width: 60ch;
  margin-bottom: 0;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-peacock);
  border: 1px solid rgba(25, 211, 218, 0.35);
  padding: 3px 10px;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius);
}

/* ---------- 11. Section Label ---------- */
.section-label {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-violet);
  border-bottom: 1px solid rgba(139, 92, 246, 0.35);
  padding-bottom: 4px;
  margin-bottom: var(--space-md);
}

.section-label::before {
  content: "◆";
  font-size: 0.6em;
  color: var(--color-peacock);
}

/* ---------- 12. Cards ---------- */
.card {
  background: var(--color-cream);
  border: var(--border-width) solid var(--color-deep-blue);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: var(--space-lg);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 rgba(11, 27, 58, 0.3);
}

.card-title {
  font-family: var(--font-headings);
  font-size: var(--fs-h3);
  color: var(--color-deep-blue);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.card-body {
  font-size: var(--fs-small);
  color: rgba(27, 27, 31, 0.75);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  flex: 1 0 auto;
}

.card-link {
  display: inline-block;
  font-weight: 700;
  font-size: var(--fs-small);
  color: var(--color-electric);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  align-self: flex-start;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.card-link:hover {
  color: var(--color-orange);
  border-bottom-color: var(--color-orange);
}

/* ---------- 13. Tag / Badge ---------- */
.tag {
  display: inline-block;
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius);
  border: 1px solid currentColor;
  color: var(--color-violet);
  background: transparent;
  line-height: 1.4;
}

.tag-static {
  color: var(--color-peacock);
}

.tag-gold {
  color: var(--color-gold);
  background: var(--color-deep-blue);
  border-color: var(--color-gold);
}

.tag-orange {
  color: var(--color-orange);
  border-color: var(--color-orange);
}

/* ---------- 14. Image Frame ---------- */
.image-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-gray);
  border: var(--border-width) solid var(--color-deep-blue);
  box-shadow: var(--shadow-med);
  border-radius: var(--radius);
}

.image-frame--4x3 { aspect-ratio: 4 / 3; }
.image-frame--1x1 { aspect-ratio: 1 / 1; }
.image-frame--wide { aspect-ratio: 21 / 9; }

.image-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-frame > .image-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(11, 27, 58, 0.45);
  background: repeating-linear-gradient(135deg,
    var(--color-gray) 0 12px,
    rgba(11, 27, 58, 0.04) 12px 24px);
}

/* ---------- 15. Data Note (narrow annotation) ---------- */
.data-note {
  font-family: var(--font-accents);
  font-size: var(--fs-micro);
  line-height: 1.7;
  color: var(--color-deep-blue);
  border-left: 3px solid var(--color-violet);
  padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
  margin-bottom: var(--space-lg);
}

.data-note strong {
  display: block;
  font-size: var(--fs-small);
  margin-bottom: 4px;
  color: var(--color-violet);
}

/* ---------- 16. Terrace Pattern Texture ---------- */
.pattern-terrace {
  background:
    repeating-linear-gradient(115deg,
      transparent 0 24px,
      rgba(25, 211, 218, 0.06) 24px 26px,
      transparent 26px 52px,
      rgba(139, 92, 246, 0.05) 52px 54px,
      transparent 54px 80px),
    repeating-linear-gradient(20deg,
      transparent 0 36px,
      rgba(212, 184, 77, 0.05) 36px 38px,
      transparent 38px 72px),
    var(--color-gray);
}

/* ---------- 17. Responsive Breakpoints ---------- */
@media (max-width: 1024px) {
  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl) var(--space-lg);
  }

  .footer-col-brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }

  .grid-col-3 { grid-column: span 6; }
  .grid-col-4 { grid-column: span 6; }
  .grid-col-6 { grid-column: span 6; }
  .grid-col-8 { grid-column: span 12; }
  .grid-col-9 { grid-column: span 12; }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }

  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 0 var(--space-md);
    padding: 12px var(--space-md);
  }

  .masthead {
    grid-column: 1;
    grid-row: 1;
    padding: 0;
    text-align: left;
  }

  .brand-mark {
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
    padding: 6px 14px 7px;
    box-shadow: none;
    border-width: 1px;
  }

  .brand-chinese {
    font-size: 1.35rem;
    letter-spacing: 0.04em;
  }

  .brand-tagline {
    font-size: 0.55rem;
    letter-spacing: 0.14em;
    white-space: nowrap;
  }

  .site-header[data-scrolled] .brand-mark {
    padding: 4px 10px 5px;
    border-width: 1px;
  }

  .site-header[data-scrolled] .brand-chinese {
    font-size: 1rem;
  }

  .nav-toggle {
    grid-column: 2;
    grid-row: 1;
    display: inline-flex;
  }

  .site-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--dur-med) var(--ease);
    border-top: 1px solid transparent;
  }

  .site-nav[data-open] {
    max-height: 420px;
    border-top-color: rgba(212, 184, 77, 0.25);
    margin-top: var(--space-sm);
  }

  .nav-list {
    flex-direction: column;
    padding: var(--space-sm) 0;
  }

  .nav-item + .nav-item::before {
    display: none;
  }

  .nav-item + .nav-item {
    border-top: 1px solid rgba(212, 184, 77, 0.15);
  }

  .nav-item a {
    display: block;
    padding: 12px 8px;
    font-size: var(--fs-body);
    border-left: 3px solid transparent;
    border-bottom: none;
  }

  .nav-item a:hover {
    border-left-color: var(--color-gold);
    border-bottom: none;
    background: rgba(212, 184, 77, 0.05);
  }

  .nav-item a[aria-current="page"] {
    border-left-color: var(--color-orange);
    border-bottom: none;
  }

  .page-header {
    padding: var(--space-lg) 0;
    margin-bottom: var(--space-lg);
  }

  .grid {
    gap: var(--space-md);
  }

  .grid-col-3,
  .grid-col-4,
  .grid-col-6,
  .grid-col-8,
  .grid-col-9,
  .grid-col-12 {
    grid-column: span 12;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-col-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 4px;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .brand-tagline {
    display: none;
  }

  .brand-chinese {
    font-size: 1.2rem;
  }

  .nav-toggle-label {
    display: none;
  }

  .nav-toggle {
    padding: 8px 10px;
  }
}

/* ---------- 18. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .card:hover,
  .btn:hover,
  .brand-mark:hover,
  .nav-item a,
  .footer-links a {
    transform: none !important;
  }
}