/* ============================================
   群青的魔女 / DECOY - 游戏官网样式
   ============================================ */

/* CSS Variables */
:root {
  --color-primary: #16202d;
  --color-primary-light: #1e2d3f;
  --color-primary-dark: #0e1520;
  --color-secondary1: #c2e9ec;
  --color-secondary2: #2373c7;
  --color-secondary3: #5bbbef;
  --color-accent: #5bbbef;
  --color-text: #e0e8f0;
  --color-text-muted: #8a9bb0;
  --color-text-dark: #16202d;
  --color-white: #ffffff;
  --color-card-bg: rgba(30, 45, 63, 0.6);
  --color-card-border: rgba(91, 187, 239, 0.15);
  --color-overlay: rgba(22, 32, 45, 0.85);
  --gradient-primary: linear-gradient(135deg, #2373c7, #5bbbef);
  --gradient-hero: linear-gradient(180deg, rgba(22, 32, 45, 0.3) 0%, #16202d 100%);
  --gradient-card: linear-gradient(145deg, rgba(35, 115, 199, 0.08), rgba(91, 187, 239, 0.04));
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(91, 187, 239, 0.2);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-main: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-primary);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-secondary3);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary1);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Section Common */
.section {
  padding: 70px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2rem;
  color: var(--color-white);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-top: 16px;
}

/* ============================================
   Header / Navigation
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(22, 32, 45, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(91, 187, 239, 0.1);
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(14, 21, 32, 0.98);
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.85;
  color: var(--color-white);
}

.logo img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-white);
  background: rgba(91, 187, 239, 0.1);
}

.nav-menu a i {
  font-size: 0.85rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 30px);
  padding-bottom: 40px;
  overflow: hidden;
  background: var(--color-primary);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  filter: blur(2px);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

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

.hero-content {
  display: flex;
  align-items: center;
  gap: 50px;
}

.hero-text {
  flex: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background: rgba(91, 187, 239, 0.15);
  border: 1px solid rgba(91, 187, 239, 0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--color-secondary3);
  margin-bottom: 16px;
}

.hero-title {
  font-size: 2.6rem;
  color: var(--color-white);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-secondary3);
  margin-bottom: 14px;
  font-weight: 500;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  max-width: 560px;
  line-height: 1.8;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.hero-meta .meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  background: rgba(35, 115, 199, 0.12);
  border: 1px solid rgba(35, 115, 199, 0.2);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--color-secondary1);
}

.hero-meta .meta-tag i {
  color: var(--color-secondary3);
  font-size: 0.78rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-cover {
  flex-shrink: 0;
  width: 280px;
}

.hero-cover img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  font-family: var(--font-main);
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(35, 115, 199, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 6px 22px rgba(35, 115, 199, 0.6);
  transform: translateY(-2px);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-secondary3);
  border: 1px solid rgba(91, 187, 239, 0.4);
}

.btn-outline:hover {
  background: rgba(91, 187, 239, 0.1);
  border-color: var(--color-secondary3);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ============================================
   News Section
   ============================================ */
.news-section {
  background: var(--color-primary-dark);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(91, 187, 239, 0.3);
}

.news-card-date {
  font-size: 0.8rem;
  color: var(--color-secondary3);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card-date i {
  font-size: 0.75rem;
}

.news-card h3 {
  font-size: 1.1rem;
  color: var(--color-white);
  margin-bottom: 10px;
}

.news-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.news-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-secondary3);
  font-weight: 500;
}

.news-card .card-link:hover {
  gap: 10px;
}

.news-tag {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(91, 187, 239, 0.12);
  color: var(--color-secondary3);
  border-radius: 4px;
  font-size: 0.72rem;
  margin-bottom: 12px;
}

/* ============================================
   Gallery Section
   ============================================ */
.gallery-section {
  background: var(--color-primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 16/9;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(22, 32, 45, 0.7) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  z-index: 1;
  color: var(--color-white);
  font-size: 0.85rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
  transform: translateY(0);
}

.gallery-item.featured {
  grid-column: span 2;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: var(--color-white);
  font-size: 1.2rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  border-radius: 50%;
  color: var(--color-white);
  font-size: 1.2rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.18);
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}

/* ============================================
   Reviews Section
   ============================================ */
.reviews-section {
  background: var(--color-primary-dark);
}

.reviews-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 50px;
  margin-bottom: 40px;
  padding: 30px;
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
}

.review-score {
  text-align: center;
}

.review-score .score-num {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.review-score .score-max {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.review-score .stars {
  color: #fbbf24;
  font-size: 1.1rem;
  margin-top: 6px;
}

.review-score .review-count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.review-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.review-tags span {
  padding: 6px 14px;
  background: rgba(91, 187, 239, 0.1);
  border: 1px solid rgba(91, 187, 239, 0.2);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--color-secondary1);
}

.reviews-carousel {
  position: relative;
  overflow: hidden;
}

.reviews-track {
  display: flex;
  transition: transform var(--transition-slow);
}

.review-card {
  flex: 0 0 calc(33.333% - 16px);
  margin: 0 8px;
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.review-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
}

.review-user-info .review-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
}

.review-user-info .review-date {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.review-stars {
  color: #fbbf24;
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.review-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
}

.carousel-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(91, 187, 239, 0.1);
  border: 1px solid rgba(91, 187, 239, 0.2);
  border-radius: 50%;
  color: var(--color-secondary3);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.carousel-btn:hover {
  background: rgba(91, 187, 239, 0.2);
  transform: scale(1.05);
}

/* ============================================
   Version History Section
   ============================================ */
.version-section {
  background: var(--color-primary);
}

.version-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.version-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-secondary2), rgba(35, 115, 199, 0.1));
}

.version-item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 32px;
}

.version-item:last-child {
  margin-bottom: 0;
}

.version-dot {
  position: absolute;
  left: 12px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-secondary2);
  z-index: 1;
}

.version-item:first-child .version-dot {
  background: var(--color-secondary2);
  box-shadow: 0 0 10px rgba(35, 115, 199, 0.5);
}

.version-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.version-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.version-card-header h3 {
  font-size: 1.1rem;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.version-tag {
  padding: 3px 10px;
  background: rgba(91, 187, 239, 0.15);
  color: var(--color-secondary3);
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
}

.version-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.version-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.version-changes {
  list-style: none;
  margin-bottom: 16px;
}

.version-changes li {
  position: relative;
  padding-left: 18px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  line-height: 1.6;
}

.version-changes li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-secondary3);
  font-weight: 700;
}

.version-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: rgba(35, 115, 199, 0.15);
  border: 1px solid rgba(35, 115, 199, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-secondary3);
  font-size: 0.85rem;
  font-weight: 500;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.version-download:hover {
  background: rgba(35, 115, 199, 0.25);
  transform: translateY(-1px);
  color: var(--color-white);
}

/* ============================================
   Guide Section
   ============================================ */
.guide-section {
  background: var(--color-primary-dark);
}

.guide-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.guide-filter-btn {
  padding: 7px 18px;
  background: transparent;
  border: 1px solid rgba(91, 187, 239, 0.2);
  border-radius: 20px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-main);
}

.guide-filter-btn:hover,
.guide-filter-btn.active {
  background: rgba(91, 187, 239, 0.15);
  border-color: var(--color-secondary3);
  color: var(--color-white);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.guide-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(91, 187, 239, 0.3);
}

.guide-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(35, 115, 199, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  color: var(--color-secondary3);
  font-size: 1.3rem;
}

.guide-card h3 {
  font-size: 1.05rem;
  color: var(--color-white);
  margin-bottom: 8px;
}

.guide-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 14px;
  line-height: 1.6;
}

.guide-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.guide-difficulty {
  display: flex;
  align-items: center;
  gap: 4px;
}

.guide-difficulty .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(91, 187, 239, 0.2);
}

.guide-difficulty .dot.filled {
  background: var(--color-secondary3);
}

.guide-difficulty-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-left: 6px;
}

.guide-card-tag {
  padding: 2px 10px;
  background: rgba(91, 187, 239, 0.1);
  border-radius: 4px;
  font-size: 0.72rem;
  color: var(--color-secondary3);
}

/* ============================================
   Chapter Section
   ============================================ */
.chapter-section {
  background: var(--color-primary);
}

.chapter-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chapter-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.chapter-card:hover {
  transform: translateX(4px);
  border-color: rgba(91, 187, 239, 0.3);
}

.chapter-number {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(35, 115, 199, 0.15);
  border: 1px solid rgba(35, 115, 199, 0.3);
  border-radius: var(--radius-md);
  color: var(--color-secondary3);
  font-size: 1.3rem;
  font-weight: 800;
}

.chapter-info {
  flex: 1;
}

.chapter-info h3 {
  font-size: 1.05rem;
  color: var(--color-white);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.chapter-type-badge {
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 4px;
}

.chapter-type-badge.main {
  background: rgba(35, 115, 199, 0.2);
  color: var(--color-secondary3);
}

.chapter-type-badge.character {
  background: rgba(194, 233, 236, 0.15);
  color: var(--color-secondary1);
}

.chapter-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  line-height: 1.6;
}

.chapter-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.chapter-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.chapter-meta span i {
  color: var(--color-secondary3);
  font-size: 0.72rem;
}

.chapter-mood {
  padding: 2px 8px;
  background: rgba(91, 187, 239, 0.08);
  border-radius: 4px;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-section {
  background: var(--color-primary-dark);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.faq-item.active {
  border-color: rgba(91, 187, 239, 0.3);
}

.faq-question {
  width: 100%;
  padding: 18px 24px;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-main);
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-secondary3);
}

.faq-question i {
  font-size: 0.8rem;
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--color-primary-dark);
  border-top: 1px solid rgba(91, 187, 239, 0.08);
  padding: 50px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(91, 187, 239, 0.1);
  border-radius: 50%;
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-secondary2);
  color: var(--color-white);
}

.footer-col h4 {
  font-size: 0.95rem;
  color: var(--color-white);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--color-secondary2);
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--color-secondary3);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(91, 187, 239, 0.06);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

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

.footer-bottom-links {
  display: flex;
  gap: 16px;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-bottom-links a:hover {
  color: var(--color-secondary3);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: var(--color-white);
  font-size: 1rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .hero-content {
    gap: 30px;
  }

  .hero-cover {
    width: 220px;
  }

  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .review-card {
    flex: 0 0 calc(50% - 16px);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .section {
    padding: 50px 0;
  }

  .section-header h2 {
    font-size: 1.6rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-primary-dark);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 20px 20px;
    gap: 4px;
    transition: right var(--transition-normal);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.4);
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-menu a {
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + 24px);
    padding-bottom: 30px;
  }

  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
    gap: 24px;
  }

  .hero-cover {
    width: 180px;
    margin: 0 auto;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-desc {
    margin: 0 auto 16px;
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .gallery-item.featured {
    grid-column: span 2;
  }

  .reviews-stats {
    flex-direction: column;
    gap: 20px;
  }

  .review-tags {
    justify-content: center;
  }

  .review-card {
    flex: 0 0 calc(100% - 16px);
  }

  .chapter-card {
    flex-direction: column;
    gap: 12px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .lightbox-nav {
    width: 40px;
    height: 40px;
  }

  .lightbox-prev {
    left: 10px;
  }

  .lightbox-next {
    right: 10px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }

  .hero-meta .meta-tag {
    font-size: 0.75rem;
    padding: 4px 8px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.88rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-item.featured {
    grid-column: span 1;
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }

  .faq-question {
    padding: 14px 16px;
    font-size: 0.88rem;
  }

  .faq-answer-inner {
    padding: 0 16px 14px;
  }
}