/* =========================================================
   YUAN ZIHENG OFFICIAL ARTIST PORTFOLIO
   Cinematic Dark Theme & Responsive System
   ========================================================= */

:root {
  --bg-primary: #070809;
  --bg-surface: #101216;
  --bg-card: #15181e;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(203, 178, 121, 0.35);
  
  --gold-primary: #cbb279;
  --gold-light: #e5d29f;
  --gold-glow: rgba(203, 178, 121, 0.2);

  --text-main: #f5f6f8;
  --text-muted: #8e95a5;
  --text-dim: #5c6270;

  --font-serif: 'Cinzel', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Background Glow */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.18;
}

.glow-top {
  width: 60vw;
  height: 50vh;
  top: -15vh;
  left: 20vw;
  background: radial-gradient(circle, var(--gold-primary), transparent 70%);
}

.glow-bottom {
  width: 50vw;
  height: 40vh;
  bottom: -10vh;
  right: 5vw;
  background: radial-gradient(circle, #3a4a6b, transparent 70%);
}

/* =========================================================
   HEADER & NAVIGATION
   ========================================================= */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 8, 9, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  width: 100%;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-main);
  flex-shrink: 0;
}

.logo-en {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-main);
}

.logo-zh {
  font-size: 0.85rem;
  color: var(--gold-primary);
  letter-spacing: 1px;
}

.logo-badge {
  font-size: 0.6rem;
  letter-spacing: 1.5px;
  padding: 2px 6px;
  border: 1px solid var(--border-accent);
  color: var(--gold-primary);
  border-radius: 3px;
}

.header-right-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-shrink: 0;
}

.btn-primary-sm {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  color: #070809;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 0.5rem 1.1rem;
  border-radius: 20px;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary-sm:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--gold-glow);
}

/* Desktop Navigation (>= 992px) */
@media (min-width: 992px) {
  .desktop-nav {
    display: flex !important;
    align-items: center;
  }

  .nav-tabs {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(255, 255, 255, 0.04);
    padding: 4px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
  }

  .tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.45rem 0.95rem;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: var(--transition);
    white-space: nowrap;
  }

  .tab-en {
    font-family: var(--font-serif);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1.5px;
  }

  .tab-zh {
    font-size: 0.7rem;
    opacity: 0.8;
  }

  .tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.06);
  }

  .tab-btn.active {
    color: #070809;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
    font-weight: 600;
    box-shadow: 0 4px 15px var(--gold-glow);
  }

  .tab-btn.active .tab-zh {
    opacity: 1;
  }

  .mobile-menu-btn {
    display: none !important;
  }

  .mobile-drawer {
    display: none !important;
  }
}

/* Mobile Header & Dropdown (< 992px) */
@media (max-width: 991px) {
  .desktop-nav {
    display: none !important;
  }

  .header-inner {
    padding: 0.7rem 1rem;
  }

  .logo-en {
    font-size: 0.95rem;
    letter-spacing: 1.5px;
  }

  .logo-zh {
    font-size: 0.78rem;
  }

  .logo-badge {
    display: none;
  }

  .btn-primary-sm {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }

  /* Mobile Hamburger Button */
  .mobile-menu-btn {
    display: flex !important;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-accent);
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
    transition: var(--transition);
    flex-shrink: 0;
  }

  .mobile-menu-btn .m-bar {
    width: 18px;
    height: 2px;
    background-color: var(--gold-light);
    border-radius: 2px;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s;
  }

  .mobile-menu-btn.open .bar-1 {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-menu-btn.open .bar-2 {
    opacity: 0;
  }

  .mobile-menu-btn.open .bar-3 {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Mobile Dropdown Panel */
  .mobile-drawer {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(8, 9, 11, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid var(--border-accent);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.9);
    z-index: 999;
  }

  .mobile-drawer.open {
    display: block !important;
    animation: drawerSlideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  @keyframes drawerSlideDown {
    from {
      opacity: 0;
      transform: translateY(-8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .mobile-menu-list {
    display: flex;
    flex-direction: column;
    padding: 0.8rem 1rem 1.2rem;
    gap: 0.45rem;
    width: 100%;
  }

  .m-item {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.2rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    width: 100%;
    box-sizing: border-box;
    cursor: pointer;
    text-align: left;
  }

  .m-item-en {
    font-family: var(--font-serif);
    font-size: 0.92rem;
    letter-spacing: 2px;
    color: #fff;
    font-weight: 600;
  }

  .m-item-zh {
    font-size: 0.8rem;
    color: var(--text-muted);
  }

  .m-item:active {
    background: rgba(203, 178, 121, 0.15);
  }

  .m-item.active {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
    border-color: transparent;
    box-shadow: 0 4px 15px var(--gold-glow);
  }

  .m-item.active .m-item-en {
    color: #070809;
    font-weight: 700;
  }

  .m-item.active .m-item-zh {
    color: #070809;
    font-weight: 600;
  }
}

/* =========================================================
   HERO SECTION & DYNAMIC CAROUSEL
   ========================================================= */

.hero-section {
  position: relative;
  min-height: 82vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 4rem 2rem 5rem;
  overflow: hidden;
  width: 100%;
}

.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1), visibility 1.2s;
  will-change: opacity, transform;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
}

.hero-slide .hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.68) contrast(1.08);
  transform: scale(1.0);
  transition: transform 7s cubic-bezier(0.25, 1, 0.5, 1);
}

.hero-slide.active .hero-img {
  transform: scale(1.06);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,8,9,0.3) 0%, rgba(7,8,9,0.72) 65%, #070809 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

.pill-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 2px;
  font-weight: 600;
  color: var(--gold-light);
  border: 1px solid var(--border-accent);
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(203, 178, 121, 0.08);
  margin-bottom: 0.8rem;
}

.hero-genre {
  font-size: 0.72rem;
  letter-spacing: 2.5px;
  color: var(--text-muted);
  margin-left: 0.8rem;
}

.hero-title {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.2rem;
}

.en-name {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 6vw, 5.5rem);
  font-weight: 900;
  letter-spacing: 4px;
  line-height: 1.05;
  background: linear-gradient(180deg, #ffffff 40%, rgba(255,255,255,0.75) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.zh-name {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.2vw, 2.8rem);
  font-weight: 600;
  letter-spacing: 8px;
  color: var(--gold-primary);
  margin-top: 0.3rem;
}

.hero-intro {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 680px;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

.btn-hero-primary {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  color: #070809;
  border: none;
  padding: 0.85rem 2rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--gold-glow);
}

.btn-hero-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.85rem 2rem;
  border-radius: 30px;
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 1px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.hero-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2.2rem;
  max-width: 480px;
}

.carousel-dots {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.dot {
  width: 32px;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition);
}

.dot.active {
  background: var(--gold-primary);
  width: 54px;
  box-shadow: 0 0 10px var(--gold-glow);
}

.carousel-nav-btns {
  display: flex;
  gap: 0.6rem;
}

.c-nav-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.c-nav-btn:hover {
  background: var(--gold-primary);
  color: #070809;
  border-color: var(--gold-primary);
  transform: scale(1.08);
}

.film-ticker {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(16, 18, 22, 0.8);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  padding: 0.6rem 0;
  z-index: 3;
}

.ticker-track {
  display: flex;
  gap: 2rem;
  white-space: nowrap;
  animation: tickerSlide 30s linear infinite;
  font-size: 0.78rem;
  letter-spacing: 1.5px;
  color: var(--gold-light);
  font-weight: 500;
}

@keyframes tickerSlide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (max-width: 991px) {
  .hero-section {
    min-height: 88vh;
    padding: 2rem 1.2rem 4.5rem;
  }

  .hero-intro {
    font-size: 0.86rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
  }

  .hero-actions {
    flex-direction: row;
    gap: 0.6rem;
    width: 100%;
  }

  .btn-hero-primary, .btn-hero-secondary {
    flex: 1;
    text-align: center;
    padding: 0.75rem 0.8rem;
    font-size: 0.84rem;
  }

  .hero-controls {
    margin-top: 1.8rem;
  }
}

/* =========================================================
   MAIN CONTAINER & SECTIONS
   ========================================================= */

.main-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 3.5rem 2rem 6rem;
  position: relative;
  z-index: 2;
  width: 100%;
}

@media (max-width: 768px) {
  .main-container {
    padding: 2rem 1rem 4rem;
  }
}

.content-view {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.content-view.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.2rem;
}

.sec-subtitle {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 3px;
  color: var(--gold-primary);
  display: block;
  margin-bottom: 0.2rem;
}

.sec-title {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: 2px;
}

.sec-filter-count {
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 1px;
}

/* Gallery Grid (Masonry Columns) */
.gallery-grid {
  column-count: 3;
  column-gap: 1.5rem;
}

@media (max-width: 1024px) {
  .gallery-grid { column-count: 2; }
}

@media (max-width: 640px) {
  .gallery-grid { column-count: 1; }
}

.gallery-card {
  break-inside: avoid;
  margin-bottom: 1.5rem;
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.gallery-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-accent);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 15px var(--gold-glow);
}

.card-media {
  position: relative;
  overflow: hidden;
  background: #000;
}

.card-img {
  width: 100%;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
  filter: brightness(0.92);
}

.gallery-card:hover .card-img {
  transform: scale(1.04);
  filter: brightness(1.02);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 0.65rem;
  letter-spacing: 1.2px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(7, 8, 9, 0.8);
  backdrop-filter: blur(8px);
  color: var(--gold-light);
  border: 1px solid rgba(203, 178, 121, 0.3);
  z-index: 2;
}

.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(7, 8, 9, 0.95) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.2rem;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.gallery-card:hover .card-overlay {
  opacity: 1;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 0.2rem;
}

.card-desc {
  font-size: 0.78rem;
  color: var(--gold-light);
}

/* =========================================================
   VIDEO SECTION
   ========================================================= */

.video-stage {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 960px) {
  .video-stage {
    grid-template-columns: 1fr;
  }
}

.featured-player-wrap {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.main-player {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  display: block;
}

.player-info {
  padding: 1.4rem 1.6rem;
  border-top: 1px solid var(--border-color);
}

.player-info h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-main);
  margin-bottom: 0.3rem;
}

.player-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.video-playlist {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.video-card {
  display: flex;
  gap: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  align-items: center;
}

.video-card:hover {
  background: var(--bg-card);
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.video-card.active {
  border-color: var(--gold-primary);
  background: rgba(203, 178, 121, 0.08);
}

.v-thumb-wrap {
  width: 100px;
  height: 65px;
  background: #000;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.v-thumb-wrap::after {
  content: '▶';
  color: var(--gold-light);
  font-size: 0.8rem;
}

.v-meta h4 {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--text-main);
}

.v-meta span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* =========================================================
   ABOUT SECTION
   ========================================================= */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 3.5rem;
  align-items: start;
}

@media (max-width: 960px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.about-img-frame {
  position: sticky;
  top: 100px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 25px 50px rgba(0,0,0,0.7);
}

.about-img {
  width: 100%;
  display: block;
  filter: contrast(1.05);
}

.about-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(7, 8, 9, 0.85);
  backdrop-filter: blur(10px);
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--border-accent);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge-num {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gold-primary);
  line-height: 1;
}

.badge-unit {
  font-size: 0.65rem;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.about-name {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: #fff;
  margin: 0.5rem 0 0.2rem;
}

.about-name-en {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--gold-primary);
  margin-left: 0.6rem;
}

.about-title {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.2rem;
}

.stat-card.span-2 {
  grid-column: span 2;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--gold-primary);
  letter-spacing: 1.5px;
  margin-bottom: 0.3rem;
}

.stat-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.stat-value .unit {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.3rem;
}

.skill-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-main);
}

.works-block {
  margin-bottom: 2.5rem;
}

.works-block-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 2px;
  color: var(--gold-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
}

.works-list {
  list-style: none;
}

.works-list li {
  display: flex;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.9rem;
}

.work-cat {
  font-size: 0.75rem;
  color: var(--gold-light);
  border: 1px solid var(--border-accent);
  padding: 2px 8px;
  border-radius: 3px;
  width: 78px;
  text-align: center;
  margin-right: 1rem;
  flex-shrink: 0;
}

.work-name {
  font-weight: 600;
  color: var(--text-main);
  margin-right: 1rem;
}

.work-role {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-left: auto;
}

.brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.brand-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* =========================================================
   CONTACT SECTION & SOCIAL MATRIX
   ========================================================= */

.contact-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 3.5rem 3rem;
}

@media (max-width: 768px) {
  .contact-box {
    padding: 2rem 1.2rem;
  }
}

.contact-hero {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 3rem;
}

.contact-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  letter-spacing: 2px;
  color: #fff;
  margin: 0.6rem 0 0.8rem;
}

@media (max-width: 768px) {
  .contact-title {
    font-size: 1.4rem;
  }
}

.contact-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.contact-cards-primary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 768px) {
  .contact-cards-primary {
    grid-template-columns: 1fr;
  }
}

.highlight-card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(203, 178, 121, 0.04));
  border: 1px solid var(--border-accent);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
}

.c-icon {
  font-size: 2rem;
  margin-bottom: 0.6rem;
}

.c-label {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.c-highlight-val {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  margin: 0.5rem 0 0.3rem;
}

.c-sub-val {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.4rem;
}

.copyable {
  color: var(--gold-light);
  cursor: pointer;
  border-bottom: 1px dashed var(--gold-primary);
  padding-bottom: 1px;
}

.copyable:hover {
  color: #fff;
}

.c-btn-group {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
}

.btn-call {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  color: #070809;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: 20px;
  transition: var(--transition);
}

.btn-call:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--gold-glow);
}

.btn-copy, .btn-copy-xhs {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.85rem;
  padding: 0.6rem 1.4rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-copy:hover, .btn-copy-xhs:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Social Media Matrix */
.social-matrix-wrap {
  margin-bottom: 3rem;
}

.social-matrix-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 2.5px;
  color: var(--gold-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.8rem;
  margin-bottom: 1.8rem;
  text-align: center;
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 960px) {
  .social-grid {
    grid-template-columns: 1fr;
  }
}

.social-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.social-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.social-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.social-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.douyin-icon { background: rgba(254, 44, 85, 0.12); color: #fe2c55; }
.weibo-icon { background: rgba(230, 22, 45, 0.12); color: #e6162d; }
.xhs-icon { background: rgba(255, 36, 66, 0.12); color: #ff2442; }

.social-platform {
  font-family: var(--font-serif);
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: var(--gold-primary);
}

.social-account-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
}

.verified-badge {
  display: inline-block;
  font-size: 0.65rem;
  background: #ff8200;
  color: #fff;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 500;
  margin-left: 4px;
}

.social-account-id {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.social-qr-box {
  background: #000;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.social-qr-box:hover {
  border-color: var(--gold-primary);
  background: rgba(203, 178, 121, 0.05);
}

.qr-thumb {
  width: 120px;
  height: auto;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  transition: transform 0.3s ease;
}

.social-qr-box:hover .qr-thumb {
  transform: scale(1.05);
}

.qr-hint {
  font-size: 0.72rem;
  color: var(--gold-light);
  letter-spacing: 0.5px;
}

.social-action-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.xhs-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* PDF Card */
.pdf-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(203, 178, 121, 0.12), rgba(203, 178, 121, 0.03));
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  padding: 1.4rem 2rem;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .pdf-download-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

.pdf-left {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.pdf-icon {
  font-size: 2.2rem;
}

.pdf-title {
  font-weight: 600;
  font-size: 1rem;
  color: #fff;
  margin-bottom: 0.2rem;
}

.pdf-size {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-download {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-primary));
  color: #070809;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.75rem 1.6rem;
  border-radius: 20px;
  white-space: nowrap;
  transition: var(--transition);
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--gold-glow);
}

/* =========================================================
   LIGHTBOX & TOAST & FOOTER
   ========================================================= */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(4, 5, 6, 0.94);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

.lightbox-container {
  position: relative;
  z-index: 2;
  max-width: 92vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.95);
}

.lightbox-close {
  position: fixed;
  top: 20px;
  right: 24px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--border-color);
  color: #fff;
  font-size: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 2010;
}

.lightbox-arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: #fff;
  font-size: 1.5rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 2010;
}

.lightbox-arrow:hover {
  background: var(--gold-primary);
  color: #000;
}

.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

@media (max-width: 640px) {
  .lightbox-arrow {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}

.lightbox-caption {
  position: absolute;
  bottom: -45px;
  left: 0;
  width: 100%;
  text-align: center;
}

.caption-title {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
}

.caption-meta {
  font-size: 0.78rem;
  color: var(--gold-light);
}

.toast-msg {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(16, 18, 22, 0.95);
  border: 1px solid var(--border-accent);
  color: var(--gold-light);
  padding: 0.75rem 1.8rem;
  border-radius: 30px;
  font-size: 0.88rem;
  letter-spacing: 1px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7), 0 0 15px var(--gold-glow);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 3000;
}

.toast-msg.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.footer {
  border-top: 1px solid var(--border-color);
  background: #050607;
  padding: 2.5rem 2rem;
  width: 100%;
}

.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

.footer-logo .f-en {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: 2px;
  color: #fff;
}

.footer-logo .f-zh {
  color: var(--gold-primary);
  margin-left: 0.5rem;
}

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

.footer-links a {
  color: var(--gold-light);
  text-decoration: none;
  transition: var(--transition);
}

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