/* ==========================================================================
   VĂN MIẾU - QUỐC TỬ GIÁM
   Crafted faithfully in the style & design system of ZANNIER HOTELS
   (Mastered Simplicity, Timeless Heritage, Refined Editorial Luxury)
   ========================================================================== */

/* Local Heritage Fonts: EBGaramondVN for Headings & Nunito for Content */
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-Italic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-MediumItalic.ttf') format('truetype');
  font-weight: 500;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-SemiBoldItalic.ttf') format('truetype');
  font-weight: 600;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-BoldItalic.ttf') format('truetype');
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'EBGaramondVN';
  src: url('/static/fonts/eb-garamond/EBGaramondVN-ExtraBold.ttf') format('truetype');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

/* Nunito Font Family */
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-Light.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-LightItalic.ttf') format('truetype');
  font-weight: 300;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-Italic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-MediumItalic.ttf') format('truetype');
  font-weight: 500;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-SemiBoldItalic.ttf') format('truetype');
  font-weight: 600;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-BoldItalic.ttf') format('truetype');
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-ExtraBold.ttf') format('truetype');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/static/fonts/nunito/Nunito-Black.ttf') format('truetype');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Zannier Color Palette */
  --color-bg: #f8f6f2;              /* Warm stone / Dó paper background */
  --color-bg-alt: #f1ede5;          /* Slightly deeper Dó linen */
  --color-surface: #ffffff;         /* Pure clean card surface */
  --color-dark: #171815;             /* Deep antique ebony */
  --color-dark-surface: #222320;     /* Deep slate dark card */
  --color-dark-muted: #3a3b37;       /* Dark section divider */
  
  --color-text: #21221f;             /* Primary text */
  --color-text-muted: #66645e;       /* Secondary / editorial body text */
  --color-text-light: #8e8b84;       /* Subtle caption */
  --color-text-on-dark: #f8f6f2;     /* Inverted text */
  
  --color-bronze: #9c8366;          /* Antique bronze gold */
  --color-gold: #c5a059;            /* Zannier muted gold */
  --color-lacquer: #822724;         /* Royal lacquer vermilion (Vietnamese heritage) */
  --color-border: #e4ded5;          /* Delicate hairline border */
  --color-border-dark: rgba(255, 255, 255, 0.12);
  
  /* Typography - Heading: EBGaramondVN | Body: Nunito */
  --font-serif: 'EBGaramondVN', 'EB Garamond VN', 'Cormorant Garamond', Garamond, 'Minion Pro', Georgia, serif;
  --font-sans: 'Nunito', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Shadows */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.5) 0%, rgba(248, 246, 242, 0.85) 100%),
    url('/static/images/bg_paper_texture.jpg');
  background-repeat: repeat;
  background-size: 800px auto;
  background-attachment: fixed;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
  selection-background-color: var(--color-bronze);
}

::selection {
  background: var(--color-bronze);
  color: #fff;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.18;
  color: var(--color-dark);
  letter-spacing: -0.01em;
}

p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

/* Zannier Eyebrow / Category Tag */
.zh-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text);
  display: inline-block;
  margin-bottom: 0.85rem;
}

.zh-eyebrow.on-dark {
  color: var(--color-gold);
}

/* Container */
.zh-container {
  width: 100%;
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.zh-container-narrow {
  max-width: 960px;
}

.zh-container-wide {
  max-width: 1560px;
}

/* ==========================================================================
   HEADER & NAVIGATION (Zannier Mastered Navigation)
   ========================================================================== */
.zh-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.8rem 0;
  transition: background-color 0.4s ease, padding 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
  border-bottom: 1px solid transparent;
}

.zh-header.scrolled {
  background-color: rgba(248, 246, 242, 0.95);
  background-image:
    url('/static/images/motif_cloud_sepia.png'),
    url('/static/images/motif_lotus_sepia.png');
  background-position: left -20px top -30px, right -10px top -25px;
  background-repeat: no-repeat, no-repeat;
  background-size: 110px auto, 90px auto;
  backdrop-filter: blur(14px);
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.03);
}

.zh-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.zh-brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}

.zh-brand-mark {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(197, 160, 89, 0.4);
  border-radius: 50%;
  background: rgba(240, 237, 230, 0.95);
  backdrop-filter: blur(8px);
  padding: 4px;
  transition: var(--transition-smooth);
}

.zh-brand-logo-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
  transition: transform 0.3s ease;
}

.zh-brand:hover .zh-brand-logo-img {
  transform: scale(1.12);
}

.zh-header.scrolled .zh-brand-mark {
  border-color: var(--color-bronze);
  background: rgba(240, 237, 230, 0.95);
}

.zh-brand-text {
  display: flex;
  flex-direction: column;
}

.zh-brand-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: #fff;
  line-height: 1;
  text-transform: uppercase;
  transition: color 0.4s ease;
}

.zh-brand-sub {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: rgba(255, 255, 255, 0.75);
  text-transform: uppercase;
  margin-top: 0.25rem;
  transition: color 0.4s ease;
}

.zh-header.scrolled .zh-brand-title {
  color: var(--color-dark);
}

.zh-header.scrolled .zh-brand-sub {
  color: var(--color-text-muted);
}

/* Desktop Navigation */
.zh-nav {
  display: none;
}

@media (min-width: 992px) {
  .zh-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
  }
}

.zh-nav-link {
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
  position: relative;
  padding: 0.4rem 0;
  transition: color 0.3s ease;
}

.zh-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: #fff;
  transition: width 0.3s ease;
}

.zh-nav-link:hover::after,
.zh-nav-link.active::after {
  width: 100%;
}

.zh-header.scrolled .zh-nav-link {
  color: var(--color-text);
}

.zh-header.scrolled .zh-nav-link::after {
  background-color: var(--color-bronze);
}

.zh-header.scrolled .zh-nav-link:hover,
.zh-header.scrolled .zh-nav-link.active {
  color: var(--color-bronze);
}

/* Right Actions */
.zh-header-actions {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

/* CTA Pill Button (Zannier 'Book Now' style) */
.zh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  border-radius: 999px;
  border: 1px solid #fff;
  color: #fff;
  background-color: transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  white-space: nowrap;
}

.zh-btn:hover {
  background-color: #fff;
  color: var(--color-dark);
}

.zh-header.scrolled .zh-btn {
  border-color: var(--color-dark);
  color: var(--color-dark);
}

.zh-header.scrolled .zh-btn:hover {
  background-color: var(--color-dark);
  color: #fff;
}

/* Solid Variant */
.zh-btn-primary {
  background-color: var(--color-dark);
  color: #fff;
  border-color: var(--color-dark);
}

.zh-btn-primary:hover {
  background-color: var(--color-bronze);
  border-color: var(--color-bronze);
  color: #fff;
}

.zh-btn-gold {
  background-color: var(--color-bronze);
  color: #fff;
  border-color: var(--color-bronze);
}

.zh-btn-gold:hover {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: #fff;
}

/* Minimal Line Button */
.zh-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-dark);
  position: relative;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--color-bronze);
  transition: var(--transition-smooth);
}

.zh-link-arrow:hover {
  color: var(--color-bronze);
  gap: 0.9rem;
}

.zh-link-arrow.on-dark {
  color: #fff;
  border-bottom-color: var(--color-gold);
}

.zh-link-arrow.on-dark:hover {
  color: var(--color-gold);
}

/* Hamburger Toggle */
.zh-hamburger {
  width: 42px;
  height: 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1100;
}

.zh-hamburger span {
  display: block;
  width: 26px;
  height: 1.5px;
  background-color: #fff;
  transition: transform 0.3s ease, background-color 0.3s ease, opacity 0.3s ease;
}

.zh-header.scrolled .zh-hamburger span {
  background-color: var(--color-dark);
}

.zh-hamburger.is-active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
  background-color: #fff !important;
}

.zh-hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.zh-hamburger.is-active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
  background-color: #fff !important;
}

/* Fullscreen Mega Menu Overlay */
.zh-mega-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-dark);
  color: #fff;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  display: flex;
}

.zh-mega-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.zh-mega-grid {
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  height: 100%;
}

@media (min-width: 992px) {
  .zh-mega-grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.zh-mega-content {
  padding: 7rem 3rem 4rem 4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
}

.zh-mega-menu-list {
  list-style: none;
}

.zh-mega-menu-item {
  margin-bottom: 1.4rem;
}

.zh-mega-menu-link {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 300;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease, padding-left 0.3s ease;
  display: inline-block;
}

.zh-mega-menu-link:hover,
.zh-mega-menu-link.active {
  color: #fff;
  padding-left: 1rem;
}

.zh-mega-footer-info {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.zh-mega-image-pane {
  display: none;
  background-size: cover;
  background-position: center;
  position: relative;
}

@media (min-width: 992px) {
  .zh-mega-image-pane {
    display: block;
    background-image: url('/static/images/hero.jpg');
  }
  .zh-mega-image-pane::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, var(--color-dark), transparent 30%, rgba(23, 24, 21, 0.4));
  }
}

/* ==========================================================================
   HERO SECTION (Zannier Atmospheric Fullscreen / Editorial Banner)
   ========================================================================== */
.zh-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  background-color: var(--color-dark);
  overflow: hidden;
  padding: 8rem 2rem 5rem;
}

.zh-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  animation: zhHeroZoom 20s infinite alternate ease-in-out;
  filter: brightness(0.65) contrast(1.05);
}

@keyframes zhHeroZoom {
  from { transform: scale(1.02); }
  to { transform: scale(1.1); }
}

.zh-hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(23, 24, 21, 0.25) 0%, rgba(23, 24, 21, 0.75) 100%),
              linear-gradient(to bottom, rgba(23, 24, 21, 0.5) 0%, transparent 40%, rgba(23, 24, 21, 0.8) 100%);
  z-index: 1;
}

.zh-hero-content {
  position: relative;
  z-index: 2;
  max-width: 920px;
  margin: 0 auto;
}

.zh-hero-title {
  font-size: clamp(2.8rem, 6.2vw, 5.2rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1.12;
  color: #fff;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.zh-hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  font-style: italic;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.9);
  max-width: 720px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.zh-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.zh-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.3s ease;
}

.zh-scroll-indicator:hover {
  color: #fff;
}

.zh-scroll-line {
  width: 1px;
  height: 38px;
  background-color: rgba(255, 255, 255, 0.4);
  position: relative;
  overflow: hidden;
}

.zh-scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background-color: #fff;
  animation: zhScrollPulse 2s infinite ease-in-out;
}

@keyframes zhScrollPulse {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}

/* Page Sub-Hero (For About and Stories pages) */
.zh-sub-hero {
  position: relative;
  padding: 11rem 2rem 5rem;
  background-color: var(--color-dark);
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.zh-sub-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4) contrast(1.05);
}

.zh-sub-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(23, 24, 21, 0.7) 0%, rgba(23, 24, 21, 0.85) 100%);
}

.zh-sub-hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
}

.zh-sub-hero-title {
  font-size: clamp(2.4rem, 4.8vw, 4.2rem);
  font-weight: 300;
  color: #fff;
  margin-bottom: 1.2rem;
  letter-spacing: 0.03em;
}

.zh-sub-hero-desc {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.8vw, 1.45rem);
  font-style: italic;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}

/* ==========================================================================
   SECTIONS & EDITORIAL BLOCKS
   ========================================================================== */
.zh-section {
  padding: 6.5rem 0;
  background-color: var(--color-bg);
}

.zh-section-lg {
  padding: 9rem 0;
}

.zh-section-dark {
  background-color: var(--color-dark);
  color: #fff;
}

.zh-section-dark h1,
.zh-section-dark h2,
.zh-section-dark h3,
.zh-section-dark h4 {
  color: #fff;
}

.zh-section-dark p {
  color: rgba(255, 255, 255, 0.7);
}

.zh-section-alt {
  background-color: rgba(241, 237, 230, 0.55);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.zh-section-alt .zh-section-title {
  font-weight: 600;
}

.zh-section-alt .zh-section-lead {
  font-weight: 600;
  color: var(--color-text);
}

/* Section Header */
.zh-section-header {
  margin-bottom: 4rem;
}

.zh-section-header.text-center {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.zh-section-title {
  font-size: clamp(2.2rem, 3.8vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 1.2rem;
}

.zh-section-lead {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.zh-section-dark .zh-section-lead {
  color: rgba(255, 255, 255, 0.8);
}

.zh-quote-box {
  position: relative;
  padding: 4.5rem 3rem;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
  margin: 4rem 0;
  overflow: hidden;
}

.zh-quote-box::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 150px;
  height: 150px;
  background: url('/static/images/motif_lotus_sepia.png') center/contain no-repeat;
  opacity: 0.12;
  pointer-events: none;
}

.zh-quote-text {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.4;
  color: var(--color-dark);
  max-width: 900px;
  margin: 0 auto 1.5rem;
}

.zh-quote-author {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--color-bronze);
}

/* Two Column Heritage Story (Asymmetrical Editorial) */
.zh-story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
  margin: 4rem 0;
}

@media (min-width: 992px) {
  .zh-story-grid {
    grid-template-columns: 1fr 1.1fr;
    gap: 5.5rem;
  }
  .zh-story-grid.reverse {
    grid-template-columns: 1.1fr 1fr;
  }
  .zh-story-grid.reverse .zh-story-image {
    order: 2;
  }
}

.zh-story-image-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.zh-story-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.zh-story-image-wrap:hover .zh-story-image {
  transform: scale(1.04);
}

.zh-story-image-badge {
  position: absolute;
  bottom: 1.2rem;
  left: 1.2rem;
  background-color: rgba(23, 24, 21, 0.8);
  backdrop-filter: blur(8px);
  padding: 0.4rem 0.9rem;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  border-radius: 2px;
}

.zh-story-content {
  padding: 1rem 0;
}

.zh-story-heading {
  font-size: clamp(1.8rem, 2.8vw, 2.5rem);
  margin-bottom: 1.2rem;
}

.zh-story-meta-list {
  list-style: none;
  margin: 1.5rem 0 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.2rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.zh-meta-item strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-dark);
  font-weight: 500;
}

.zh-meta-item span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-light);
}

/* ==========================================================================
   COURTYARDS & ARCHITECTURE CARDS (5 Khu Vườn Di Sản)
   ========================================================================== */
.zh-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .zh-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .zh-cards-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
  }
  .zh-cards-grid.five-col {
    grid-template-columns: repeat(5, 1fr);
    gap: 1.2rem;
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .zh-cards-grid.five-col {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.zh-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.zh-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-bronze);
}

.zh-card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.zh-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.zh-card:hover .zh-card-img {
  transform: scale(1.06);
}

.zh-card-body {
  padding: 2.2rem 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.zh-card-title {
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
}

.zh-card-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.zh-card-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   STORIES / USER REFLECTIONS SECTION & CARDS
   ========================================================================== */
.zh-story-feed {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .zh-story-feed {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .zh-story-feed {
    grid-template-columns: repeat(3, 1fr);
  }
}

.zh-story-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  border-radius: 2px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.zh-story-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-bronze);
}

.zh-story-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.zh-story-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.zh-story-item:hover .zh-story-thumb img {
  transform: scale(1.05);
}

.zh-story-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: rgba(23, 24, 21, 0.85);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 2px;
}

.zh-story-content-wrap {
  padding: 2rem 1.8rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.zh-story-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  line-height: 1.25;
  margin-bottom: 0.8rem;
  color: var(--color-dark);
}

.zh-story-excerpt {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 1.6rem;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.zh-story-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.75rem;
}

.zh-story-author {
  display: flex;
  flex-direction: column;
}

.zh-story-author-name {
  font-weight: 600;
  color: var(--color-dark);
}

.zh-story-author-title {
  font-size: 0.68rem;
  color: var(--color-text-light);
}

.zh-story-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.zh-like-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: var(--transition-smooth);
}

.zh-like-btn:hover,
.zh-like-btn.liked {
  border-color: var(--color-lacquer);
  color: var(--color-lacquer);
  background-color: rgba(130, 39, 36, 0.05);
}

/* Category Filter Tabs (Zannier Style) */
.zh-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 3.5rem;
}

.zh-filter-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.6rem 1.4rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.zh-filter-btn:hover,
.zh-filter-btn.active {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: #fff;
}

/* ==========================================================================
   STORY SUBMISSION FORM (Clean, Editorial, No Login Needed)
   ========================================================================== */
.zh-form-wrapper {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 3.5rem 3rem;
  border-radius: 2px;
  box-shadow: var(--shadow-subtle);
  max-width: 840px;
  margin: 0 auto;
}

@media (max-width: 767px) {
  .zh-form-wrapper {
    padding: 2.5rem 1.5rem;
  }
}

.zh-form-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.zh-form-group {
  margin-bottom: 1.8rem;
}

.zh-form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.zh-form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  transition: var(--transition-smooth);
  outline: none;
}

.zh-form-control:focus {
  border-color: var(--color-bronze);
  background-color: #fff;
  box-shadow: 0 0 0 3px rgba(156, 131, 102, 0.12);
}

textarea.zh-form-control {
  min-height: 160px;
  resize: vertical;
  line-height: 1.7;
}

.zh-form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .zh-form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* Image Preset Picker */
.zh-image-preset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
  margin-top: 0.6rem;
}

.zh-image-preset-option {
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 2px;
  overflow: hidden;
  aspect-ratio: 16/10;
  position: relative;
  transition: var(--transition-smooth);
}

.zh-image-preset-option img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.zh-image-preset-option.selected {
  border-color: var(--color-bronze);
  box-shadow: 0 0 0 2px var(--color-bronze);
}

/* Toast Notification */
.zh-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--color-dark);
  color: #fff;
  padding: 1.1rem 1.8rem;
  border-radius: 2px;
  font-size: 0.9rem;
  box-shadow: var(--shadow-hover);
  border-left: 3px solid var(--color-gold);
  z-index: 2000;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.zh-toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Story Modal */
.zh-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(23, 24, 21, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.zh-modal-backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.zh-modal {
  background-color: var(--color-surface);
  max-width: 800px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  border-radius: 2px;
  box-shadow: var(--shadow-hover);
  position: relative;
  padding: 3rem;
}

@media (max-width: 767px) {
  .zh-modal {
    padding: 2rem 1.5rem;
  }
}

.zh-modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: transparent;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--color-dark);
  line-height: 1;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.zh-modal-close:hover {
  background-color: var(--color-bg);
}

/* ==========================================================================
   FOOTER (Faithfully copied from Zannier Hotels mega-footer)
   ========================================================================== */
.zh-footer {
  position: relative;
  background-color: var(--color-dark);
  background-image:
    radial-gradient(ellipse at 50% 0%, rgba(197, 160, 89, 0.06) 0%, transparent 65%),
    url('/static/images/motif_cloud_gold.png'),
    url('/static/images/motif_lotus_gold.png'),
    url('/static/images/motif_mountain_gold.png'),
    url('/static/images/motif_wave_gold.png'),
    url('/static/images/motif_nghe_gold.png'),
    url('/static/images/motif_lotus_crest_gold.png');
  background-position:
    center top,
    top 45px left 30px,
    top 40px right 30px,
    bottom 30px left 40px,
    bottom 25px right 30px,
    center left,
    center right;
  background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat;
  background-size: auto, 130px auto, 120px auto, 110px auto, 130px auto, 70px auto, 70px auto;
  color: #fff;
  padding: 7rem 0 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.zh-footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 5rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.zh-footer-logo-img {
  max-height: 90px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1.2rem;
  filter: drop-shadow(0 4px 16px rgba(197, 160, 89, 0.25));
  transition: transform 0.4s ease;
}

.zh-footer-logo-img:hover {
  transform: translateY(-3px) scale(1.03);
}

.zh-footer-logo-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  letter-spacing: 0.12em;
  font-weight: 500;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  color: #ffffff;
}

.zh-footer-motto {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--color-gold);
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
}

.zh-newsletter-form {
  display: flex;
  max-width: 480px;
  width: 100%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  padding-bottom: 0.4rem;
}

.zh-newsletter-input {
  flex-grow: 1;
  background: transparent;
  border: none;
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  padding: 0.6rem 0;
  outline: none;
}

.zh-newsletter-input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.zh-newsletter-submit {
  background: transparent;
  border: none;
  color: var(--color-gold);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0.6rem 0 0.6rem 1rem;
  transition: color 0.3s ease;
}

.zh-newsletter-submit:hover {
  color: #fff;
}

.zh-footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  margin-bottom: 5rem;
}

@media (min-width: 992px) {
  .zh-footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.zh-footer-col-title {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1.4rem;
}

.zh-footer-links {
  list-style: none;
}

.zh-footer-links li {
  margin-bottom: 0.75rem;
}

.zh-footer-links a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.3s ease;
}

.zh-footer-links a:hover {
  color: #fff;
}

.zh-footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.45);
}

@media (min-width: 768px) {
  .zh-footer-bottom {
    flex-direction: row;
  }
}

.zh-footer-legal-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.zh-footer-legal-links a {
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.3s ease;
}

.zh-footer-legal-links a:hover {
  color: #fff;
}

/* ==========================================================================
   IMAGE UPLOAD COMPONENT (For story submission)
   ========================================================================== */
.zh-upload-toggle {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.8rem;
}

.zh-upload-tab {
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-light);
  cursor: pointer;
  padding: 0.4rem 0.2rem;
  position: relative;
  transition: var(--transition-smooth);
}

.zh-upload-tab.active {
  color: var(--color-dark);
}

.zh-upload-tab.active::after {
  content: '';
  position: absolute;
  bottom: -0.85rem;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-bronze);
}

.zh-upload-dropzone {
  border: 1.5px dashed var(--color-border);
  border-radius: 2px;
  padding: 2.2rem 1.5rem;
  text-align: center;
  background-color: var(--color-bg);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.zh-upload-dropzone:hover,
.zh-upload-dropzone.dragover {
  border-color: var(--color-bronze);
  background-color: #fff;
}

.zh-upload-icon {
  width: 42px;
  height: 42px;
  margin: 0 auto 0.8rem;
  color: var(--color-bronze);
}

.zh-upload-text {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.zh-upload-hint {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

.zh-upload-preview-wrap {
  display: none;
  position: relative;
  margin-top: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  max-width: 320px;
}

.zh-upload-preview-wrap img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.zh-upload-remove-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background-color: rgba(23, 24, 21, 0.75);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: var(--transition-smooth);
}

.zh-upload-remove-btn:hover {
  background-color: var(--color-lacquer);
}

/* ==========================================================================
   EXPANDABLE DETAILS / THÔNG TIN THÊM (Zannier Clean Accordion)
   ========================================================================== */
.zh-details-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  margin-top: 2.5rem;
  border-radius: 2px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.zh-details-summary {
  padding: 1.4rem 2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-dark);
  list-style: none;
  transition: background-color 0.3s ease;
  user-select: none;
}

.zh-details-summary::-webkit-details-marker {
  display: none;
}

.zh-details-summary:hover {
  background-color: var(--color-bg);
}

.zh-details-summary .zh-details-icon {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}

details[open] .zh-details-summary .zh-details-icon {
  transform: rotate(180deg);
}

.zh-details-content {
  padding: 0 2rem 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.zh-details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .zh-details-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   HISTORICAL TIMELINE (Zannier Editorial Timeline)
   ========================================================================== */
.zh-timeline {
  position: relative;
  max-width: 1040px;
  margin: 4rem auto 0;
  padding-left: 2rem;
}

@media (min-width: 768px) {
  .zh-timeline {
    padding-left: 0;
  }
  .zh-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background-color: var(--color-border);
    transform: translateX(-50%);
  }
}

.zh-timeline-item {
  position: relative;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .zh-timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 2.5rem);
  }
  .zh-timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 2.5rem);
  }
}

.zh-timeline-dot {
  position: absolute;
  top: 0;
  left: -2rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 2px solid var(--color-bronze);
  z-index: 2;
}

@media (min-width: 768px) {
  .zh-timeline-dot {
    left: 50%;
    transform: translateX(-50%);
  }
}

.zh-timeline-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2.2rem 2rem;
  border-radius: 2px;
  transition: var(--transition-smooth);
}

.zh-timeline-card:hover {
  border-color: var(--color-bronze);
  box-shadow: var(--shadow-subtle);
}

.zh-timeline-year {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-bronze);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.zh-timeline-title {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.8rem;
}

/* ==========================================================================
   HISTORICAL FORMATION EPOCHS (Synthesized from Class 9A4 Research)
   ========================================================================== */
.zh-history-epochs {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
  margin-top: 3.5rem;
}

.zh-epoch-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 2.8rem 3rem;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.zh-epoch-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--color-gold);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.zh-epoch-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-bronze);
}

.zh-epoch-card:hover::before {
  opacity: 1;
}

.zh-epoch-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  padding-bottom: 1.2rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.zh-epoch-period {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-lacquer);
}

.zh-epoch-contributor {
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--color-bronze);
  background: var(--color-bg);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
}

.zh-epoch-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  color: var(--color-dark);
  margin-bottom: 1.2rem;
  line-height: 1.25;
}

.zh-epoch-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-muted);
  margin-bottom: 1.2rem;
}

.zh-epoch-body p:last-child {
  margin-bottom: 0;
}

.zh-epoch-quote {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--color-dark);
  background: var(--color-bg);
  border-left: 3px solid var(--color-gold);
  padding: 1.2rem 1.6rem;
  margin-top: 1.5rem;
  border-radius: 0 3px 3px 0;
}

@media (max-width: 768px) {
  .zh-epoch-card {
    padding: 2rem 1.25rem;
  }
  .zh-epoch-title {
    font-size: 1.45rem;
  }
  .zh-epoch-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   360 VIRTUAL TOUR & INTERACTIVE LEARNING HUD
   Faithfully styled in Zannier Hotels Minimalist Editorial Luxury
   ========================================================================== */

.zh-tour-page {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: #0d0e0c;
  color: #fff;
  font-family: var(--font-sans);
}

#panorama-container {
  width: 100vw;
  height: 100vh;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

/* Pannellum overrides for clean luxury look */
.pnlm-container {
  font-family: var(--font-sans) !important;
}

.pnlm-load-box {
  background: rgba(23, 24, 21, 0.9) !important;
  border: 1px solid var(--color-bronze) !important;
  border-radius: 2px !important;
  padding: 1.5rem !important;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5) !important;
}

.pnlm-lmsg {
  font-family: var(--font-serif) !important;
  font-size: 1.4rem !important;
  color: var(--color-gold) !important;
  letter-spacing: 0.05em !important;
}

.pnlm-load-button {
  background-color: var(--color-bronze) !important;
  border: none !important;
  border-radius: 2px !important;
}

/* Top HUD Bar */
.zh-tour-hud-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  padding: 1.2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(180deg, rgba(17, 18, 15, 0.88) 0%, rgba(17, 18, 15, 0.3) 70%, transparent 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.zh-tour-brand-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.zh-tour-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.25);
  transition: var(--transition-smooth);
}

.zh-tour-back-btn:hover {
  color: #fff;
  border-color: var(--color-gold);
  background: rgba(156, 131, 102, 0.2);
}

.zh-tour-hud-titles {
  display: flex;
  flex-direction: column;
}

.zh-tour-hud-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: #fff;
  line-height: 1.2;
}

.zh-tour-hud-subtitle {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.zh-tour-hud-controls {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.zh-hud-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.85);
  padding: 0.55rem 1.1rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.zh-hud-pill-btn:hover,
.zh-hud-pill-btn.active {
  background: var(--color-lacquer);
  border-color: var(--color-gold);
  color: #fff;
}

.zh-hud-pill-btn.playing {
  background: rgba(197, 160, 89, 0.2);
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* Sound wave animation */
.zh-sound-waves {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.zh-sound-bar {
  width: 2px;
  background-color: currentColor;
  height: 100%;
  animation: zhWave 1.2s infinite ease-in-out alternate;
}

.zh-sound-bar:nth-child(2) { animation-delay: 0.2s; }
.zh-sound-bar:nth-child(3) { animation-delay: 0.4s; }

@keyframes zhWave {
  0% { height: 20%; }
  100% { height: 100%; }
}

/* Bottom Floating Deck (Unified Luxury HUD) */
.zh-tour-hud-bottom {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.55rem 1rem;
  background: rgba(18, 19, 16, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(197, 160, 89, 0.35);
  border-radius: 6px;
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.7);
  max-width: 96vw;
  width: max-content;
  transition: all 0.3s ease;
}

/* Sơ Đồ 5 & 8 Khu Button (Integrated directly into HUD dock) */
.zh-minimap-toggle-unified {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(197, 160, 89, 0.15);
  border: 1px solid var(--color-gold);
  color: #fff;
  padding: 0.45rem 0.85rem;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
  flex-shrink: 0;
}

.zh-minimap-toggle-unified:hover,
.zh-minimap-toggle-unified.active {
  background: var(--color-gold);
  color: #121310;
  box-shadow: 0 0 15px rgba(197, 160, 89, 0.5);
}

.zh-minimap-toggle-unified svg {
  flex-shrink: 0;
}

/* Progress Box */
.zh-tour-progress-box {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0 0.85rem;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  flex-shrink: 0;
}

.zh-progress-radial {
  position: relative;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: conic-gradient(var(--color-gold) calc(var(--p, 0) * 1%), rgba(255, 255, 255, 0.1) 0);
  flex-shrink: 0;
}

.zh-progress-radial::before {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: #121310;
}

.zh-progress-radial-text {
  position: relative;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--color-gold);
}

.zh-tour-progress-info {
  display: flex;
  flex-direction: column;
}

.zh-tour-progress-label {
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.zh-tour-progress-val {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}

/* Scrollable Nodes Track */
.zh-tour-nodes-track {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  min-width: 0;
  max-width: 58vw;
}

.zh-nodes-scroll-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.8);
  width: 26px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.zh-nodes-scroll-btn:hover {
  background: var(--color-gold);
  color: #121310;
  border-color: var(--color-gold);
}

.zh-tour-nodes-nav {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  padding: 0.1rem 0.2rem;
}

.zh-tour-nodes-nav::-webkit-scrollbar {
  display: none;
}

.zh-tour-node-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.85);
  padding: 0.4rem 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  border-radius: 3px;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
  flex-shrink: 0;
}

.zh-tour-node-btn:hover {
  background: rgba(197, 160, 89, 0.2);
  border-color: var(--color-gold);
  color: #fff;
  transform: translateY(-1px);
}

.zh-tour-node-btn.active {
  background: rgba(197, 160, 89, 0.28);
  border-color: var(--color-gold);
  color: var(--color-gold);
  font-weight: 600;
  box-shadow: 0 0 10px rgba(197, 160, 89, 0.3);
}

.zh-tour-node-btn.visited {
  border-color: rgba(46, 125, 50, 0.6);
}

.zh-node-num {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--color-gold);
  background: rgba(197, 160, 89, 0.15);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
}

.zh-tour-node-icon {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-gold);
}

/* Custom 360 Hotspot Marker */
.zh-360-marker {
  position: relative;
  width: 44px;
  height: 44px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translate(-50%, -50%);
}

.zh-360-marker:hover {
  transform: translate(-50%, -50%) scale(1.15);
}

.zh-marker-pulse-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--color-gold);
  opacity: 0.8;
  animation: zhMarkerPulse 2.2s infinite cubic-bezier(0.25, 1, 0.5, 1);
  pointer-events: none;
}

.zh-marker-center {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(23, 24, 21, 0.85);
  border: 2px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(197, 160, 89, 0.6);
  backdrop-filter: blur(4px);
  color: var(--color-gold);
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.zh-360-marker:hover .zh-marker-center {
  background: var(--color-lacquer);
  color: #fff;
  border-color: #fff;
}

.zh-marker-tooltip {
  position: absolute;
  top: -38px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(23, 24, 21, 0.92);
  color: #fff;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.zh-360-marker:hover .zh-marker-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

@keyframes zhMarkerPulse {
  0% {
    transform: scale(0.85);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.65);
    opacity: 0;
  }
}

/* Mini Map Overlay & Card (Docked directly above Sơ Đồ button) */
.zh-minimap-card {
  position: absolute;
  bottom: calc(100% + 14px);
  left: 0;
  z-index: 50;
  width: 360px;
  max-width: 94vw;
  background: rgba(18, 19, 16, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(197, 160, 89, 0.4);
  border-radius: 6px;
  padding: 1.2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  display: none;
  animation: zhFadeInUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.zh-minimap-card.open {
  display: block;
}

@keyframes zhFadeInUp {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

.zh-minimap-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.zh-minimap-header-title {
  display: flex;
  flex-direction: column;
}

.zh-minimap-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: #fff;
  margin: 0;
}

.zh-minimap-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  padding: 0.2rem;
  transition: color 0.2s;
}

.zh-minimap-close:hover {
  color: var(--color-gold);
}

/* Map Mode Switcher (5 Khu vs 8 Khu) */
.zh-map-mode-switcher {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.25rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.zh-map-mode-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.65);
  padding: 0.4rem 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.zh-map-mode-btn:hover {
  color: #fff;
}

.zh-map-mode-btn.active {
  background: var(--color-gold);
  color: #121310;
  box-shadow: 0 0 10px rgba(197, 160, 89, 0.4);
}

.zh-minimap-svg-wrap {
  width: 100%;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem;
}

.map-zone {
  transition: all 0.25s ease;
}

.map-zone:hover {
  fill: rgba(197, 160, 89, 0.35) !important;
  stroke: var(--color-gold) !important;
  stroke-width: 2 !important;
}

.map-zone.active {
  fill: rgba(197, 160, 89, 0.45) !important;
  stroke: var(--color-gold) !important;
  stroke-width: 2 !important;
}

.zh-minimap-legend {
  margin-top: 0.8rem;
  padding: 0.6rem 0.8rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

.zh-legend-indicator {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.zh-legend-desc {
  font-size: 0.78rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* INTERACTIVE MODAL DIALOG */
.zh-tour-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(15, 16, 13, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: zhFadeIn 0.3s ease;
}

.zh-tour-modal-backdrop.active {
  display: flex;
}

.zh-tour-modal-window {
  background: var(--color-surface);
  color: var(--color-text);
  width: 100%;
  max-width: 780px;
  max-height: 88vh;
  border-radius: 2px;
  border: 1px solid var(--color-border);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  animation: zhScaleUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes zhScaleUp {
  0% { opacity: 0; transform: scale(0.94); }
  100% { opacity: 1; transform: scale(1); }
}

.zh-modal-header {
  padding: 1.8rem 2.5rem 1.2rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: var(--color-bg);
}

.zh-modal-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-bronze);
  display: block;
  margin-bottom: 0.3rem;
}

.zh-modal-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-dark);
  font-weight: 500;
  line-height: 1.2;
}

.zh-modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.3rem;
  line-height: 1;
  transition: var(--transition-smooth);
}

.zh-modal-close-btn:hover {
  color: var(--color-lacquer);
  transform: rotate(90deg);
}

/* Modal Task Tabs */
.zh-modal-task-tabs {
  display: flex;
  background: var(--color-bg-alt);
  padding: 0.5rem 2.5rem 0;
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  gap: 0.5rem;
}

.zh-modal-tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.7rem 1.2rem;
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.zh-modal-tab-btn:hover {
  color: var(--color-dark);
}

.zh-modal-tab-btn.active {
  color: var(--color-lacquer);
  border-bottom-color: var(--color-lacquer);
  font-weight: 600;
  background: var(--color-surface);
}

.zh-modal-body-scroll {
  padding: 2.2rem 2.5rem;
  overflow-y: auto;
  flex: 1;
}

/* TASK TYPE: INTRO */
.zh-task-intro-quote {
  border-left: 3px solid var(--color-gold);
  padding: 1rem 1.5rem;
  background: var(--color-bg);
  margin-bottom: 1.8rem;
  border-radius: 0 2px 2px 0;
}

.zh-task-intro-quote-text {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--color-dark);
  line-height: 1.6;
  margin-bottom: 0.4rem;
}

.zh-task-intro-quote-author {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-bronze);
  display: block;
}

/* TASK TYPE: QUIZ */
.zh-quiz-question-box {
  background: var(--color-bg);
  padding: 1.8rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  margin-bottom: 1.8rem;
}

.zh-quiz-question {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 1.2rem;
}

.zh-quiz-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.zh-quiz-opt-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.4rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  cursor: pointer;
  text-align: left;
  font-size: 0.95rem;
  color: var(--color-text);
  transition: var(--transition-smooth);
}

.zh-quiz-opt-btn:hover:not(.disabled) {
  border-color: var(--color-bronze);
  background: var(--color-bg);
  transform: translateX(4px);
}

.zh-quiz-opt-key {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--color-bronze);
  flex-shrink: 0;
}

.zh-quiz-opt-btn.correct {
  background: #edf7ed !important;
  border-color: #2e7d32 !important;
  color: #1e4620 !important;
}

.zh-quiz-opt-btn.correct .zh-quiz-opt-key {
  background: #2e7d32;
  color: #fff;
}

.zh-quiz-opt-btn.incorrect {
  background: #fdf2f2 !important;
  border-color: #d32f2f !important;
  color: #5c1818 !important;
}

.zh-quiz-opt-btn.incorrect .zh-quiz-opt-key {
  background: #d32f2f;
  color: #fff;
}

.zh-quiz-feedback {
  margin-top: 1.5rem;
  padding: 1.2rem 1.5rem;
  border-radius: 2px;
  font-size: 0.92rem;
  line-height: 1.7;
  display: none;
}

.zh-quiz-feedback.show {
  display: block;
}

.zh-quiz-feedback.success {
  background: #edf7ed;
  border-left: 4px solid #2e7d32;
  color: #1e4620;
}

.zh-quiz-feedback.error {
  background: #fdf2f2;
  border-left: 4px solid #d32f2f;
  color: #5c1818;
}

/* TASK TYPE: FLASHCARD 3D */
.zh-flashcard-stage {
  perspective: 1000px;
  margin: 1.5rem 0;
  cursor: pointer;
}

.zh-flashcard-3d-box {
  position: relative;
  width: 100%;
  min-height: 260px;
  border-radius: 4px;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.zh-flashcard-3d-box.flipped {
  transform: rotateY(180deg);
}

.zh-flashcard-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.zh-flashcard-front {
  background: linear-gradient(135deg, #f8f6f2 0%, #ede8de 100%);
}

.zh-flashcard-back {
  background: linear-gradient(135deg, #171815 0%, #262823 100%);
  color: #fff;
  transform: rotateY(180deg);
  border-color: rgba(197, 160, 89, 0.4);
}

.zh-flashcard-han {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: var(--color-lacquer);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.zh-flashcard-hint {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-bronze);
  margin-top: 1rem;
}

/* TASK TYPE: DRAG & DROP */
.zh-drag-container {
  margin-top: 1.2rem;
}

.zh-drag-instruction {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 1.2rem;
}

.zh-drag-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.zh-drag-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--color-bg);
  border: 1px dashed var(--color-bronze);
  padding: 1rem 1.4rem;
  border-radius: 2px;
  cursor: grab;
  transition: var(--transition-smooth);
}

.zh-drag-card:active {
  cursor: grabbing;
}

.zh-drag-card.dragging {
  opacity: 0.4;
  background: var(--color-bg-alt);
}

.zh-drag-handle {
  color: var(--color-bronze);
  font-size: 1.1rem;
}

.zh-drag-text {
  font-size: 0.95rem;
  color: var(--color-dark);
  flex: 1;
}

.zh-drag-btn-check {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--color-lacquer);
  color: #fff;
  border: none;
  padding: 0.8rem 1.8rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.zh-drag-btn-check:hover {
  background: #641916;
}

/* Congratulatory Modal */
.zh-congrats-dialog {
  text-align: center;
  padding: 3rem 2.5rem;
}

.zh-congrats-seal {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 3px double var(--color-gold);
  background: var(--color-lacquer);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  margin: 0 auto 1.5rem;
  box-shadow: 0 0 25px rgba(197, 160, 89, 0.4);
}

.zh-congrats-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--color-dark);
  margin-bottom: 0.6rem;
}

.zh-congrats-text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto 2rem;
}

@media (max-width: 768px) {
  /* Tour 360 HUD adjustments */
  .zh-tour-hud-top {
    padding: 0.8rem 1.2rem;
  }
  .zh-tour-hud-title {
    font-size: 1.1rem;
  }
  .zh-tour-hud-subtitle {
    display: none;
  }
  .zh-tour-hud-bottom {
    padding: 0.45rem 0.75rem;
    bottom: 0.8rem;
    max-width: 98vw;
    gap: 0.5rem;
  }
  .zh-tour-progress-box {
    padding: 0 0.5rem;
  }
  .zh-tour-nodes-track {
    max-width: 48vw;
  }
  .zh-tour-node-btn span.zh-node-name {
    display: none;
  }
  .zh-minimap-card {
    position: fixed;
    bottom: 4.8rem;
    left: 50%;
    transform: translateX(-50%);
    width: 92vw;
  }
  .zh-modal-header {
    padding: 1.2rem 1.5rem;
  }
  .zh-modal-body-scroll {
    padding: 1.5rem;
  }

  /* Global Container & Typography on Mobile */
  .zh-container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .zh-section {
    padding: 3.5rem 0;
  }

  .zh-section-title {
    font-size: clamp(1.8rem, 6.5vw, 2.4rem);
    line-height: 1.22;
  }

  .zh-section-lead {
    font-size: 0.94rem;
    line-height: 1.7;
    margin-bottom: 2rem;
  }

  /* Header & Navigation on Mobile */
  .zh-header {
    padding: 1rem 0;
  }

  .zh-header.scrolled {
    padding: 0.85rem 0;
  }

  .zh-brand-title {
    font-size: 1.1rem;
  }

  .zh-brand-sub {
    font-size: 0.52rem;
  }

  .zh-header-actions .zh-btn {
    display: none; /* Keep clean; accessible via hamburger and in-page CTA */
  }

  .zh-hamburger {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Hero Section on Mobile */
  .zh-hero {
    min-height: 88vh;
    padding: 7rem 1.2rem 4rem;
  }

  .zh-hero-title {
    font-size: clamp(2.3rem, 8vw, 3.2rem);
    line-height: 1.15;
  }

  .zh-hero-subtitle {
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 2rem;
  }

  .zh-hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    gap: 0.8rem;
  }

  .zh-hero-actions .zh-btn {
    width: 100%;
  }

  .zh-scroll-indicator {
    bottom: 1.2rem;
  }

  /* Story Grid / Two-column on Mobile */
  .zh-story-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
    margin: 2rem 0 !important;
  }

  .zh-story-image {
    max-height: 320px !important;
  }

  .zh-quote-box {
    padding: 2rem 1.25rem;
    margin: 2.5rem 0;
  }

  .zh-quote-text {
    font-size: 1.25rem;
    line-height: 1.6;
  }

  /* Video Feature Box on Mobile */
  .zh-video-feature {
    padding: 1.5rem 1rem !important;
  }

  .zh-video-feature video {
    max-height: none !important;
  }

  /* Horizontal Filter Bar on Mobile */
  .zh-filter-bar {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    padding-bottom: 0.8rem;
    gap: 0.6rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .zh-filter-bar::-webkit-scrollbar {
    display: none;
  }

  .zh-filter-btn {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.68rem;
    padding: 0.55rem 1.1rem;
  }

  /* Form & Presets on Mobile */
  .zh-form-wrapper {
    padding: 2rem 1.25rem !important;
  }

  .zh-image-preset-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.6rem !important;
  }

  .zh-input,
  .zh-select,
  .zh-textarea {
    font-size: 16px !important; /* Prevents auto-zoom on iOS */
  }

  /* Reading Modal on Mobile */
  .zh-modal {
    padding: 2.2rem 1.25rem !important;
    max-height: 92vh !important;
    width: 95% !important;
  }

  .zh-modal h2 {
    font-size: 1.6rem !important;
    line-height: 1.25 !important;
  }

  /* Mega Menu on Mobile */
  .zh-mega-content {
    padding: 4.5rem 1.5rem 2rem;
  }

  .zh-mega-menu-link {
    font-size: 1.35rem;
  }

  .zh-mega-footer-info {
    flex-direction: column;
    gap: 1.2rem;
  }
}

@media (max-width: 480px) {
  .zh-brand-title {
    font-size: 1rem;
  }
  .zh-hero-title {
    font-size: 2.1rem;
  }
  .zh-story-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }
  .zh-story-actions {
    width: 100%;
    justify-content: space-between;
  }
}

/* SA BAN 15-POINT MAP & MODAL (MAP FOLDER 9A4) */
.zh-saban-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1200;
  background: rgba(10, 11, 8, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 1.5rem;
}

.zh-saban-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.zh-saban-modal-window {
  position: relative;
  width: 1280px;
  max-width: 96vw;
  max-height: 92vh;
  background: #141512;
  border: 1px solid rgba(197, 160, 89, 0.4);
  border-radius: 6px;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.85);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: zhFadeInUp 0.3s ease-out;
}

.zh-saban-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.2rem 1.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(25, 26, 22, 0.95);
}

.zh-saban-body {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 1.5rem;
  padding: 1.5rem 1.8rem;
  overflow-y: auto;
  flex: 1;
}

@media (max-width: 992px) {
  .zh-saban-body {
    grid-template-columns: 1fr;
  }
}

.zh-saban-map-container {
  position: relative;
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  background: #000;
  border: 1px solid rgba(197, 160, 89, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  align-self: flex-start;
}

.zh-saban-img {
  width: 100%;
  height: auto;
  display: block;
}

.zh-saban-pin {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(18, 19, 16, 0.92);
  border: 1.5px solid #c5a059;
  color: #c5a059;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.7);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 5;
  user-select: none;
}

.zh-saban-pin:hover {
  transform: translate(-50%, -50%) scale(1.25);
  background: #c5a059;
  color: #121310;
  border-color: #fff;
  z-index: 15;
  box-shadow: 0 0 16px rgba(197, 160, 89, 0.9);
}

.zh-saban-pin.active {
  transform: translate(-50%, -50%) scale(1.3);
  background: #b3281f;
  color: #ffffff;
  border-color: #fff;
  z-index: 20;
  box-shadow: 0 0 20px rgba(179, 40, 31, 0.95);
}

.zh-saban-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.zh-saban-point-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(197, 160, 89, 0.3);
  border-radius: 4px;
  padding: 1.2rem;
  border-left: 3px solid var(--color-gold);
}

.zh-saban-chips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.4rem;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 0.3rem;
}

.zh-saban-chip {
  padding: 0.45rem 0.6rem;
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  color: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.zh-saban-chip:hover,
.zh-saban-chip.active {
  background: var(--color-gold);
  color: #121310;
  font-weight: 700;
  border-color: var(--color-gold);
}

.zh-saban-lightbox-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.zh-saban-lightbox-wrap:hover .zh-saban-zoom-hint {
  opacity: 1;
}

.zh-saban-zoom-hint {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(18, 19, 16, 0.85);
  border: 1px solid var(--color-gold);
  color: #fff;
  font-size: 0.72rem;
  padding: 0.35rem 0.8rem;
  border-radius: 3px;
  pointer-events: none;
  opacity: 0.85;
  transition: opacity 0.2s;
}