:root {
  --color-primary: #1b1c1d;
  --color-secondary-1: #c1c6c9;
  --color-secondary-2: #8698b3;
  --color-secondary-3: #667ea8;
  --color-bg: #0e0f10;
  --color-surface: #1b1c1d;
  --color-surface-2: #232527;
  --color-surface-3: #2c2e31;
  --color-text: #e0e3e6;
  --color-text-muted: #8698b3;
  --color-accent: #667ea8;
  --color-accent-hover: #7a92bc;
  --color-border: rgba(134, 152, 179, 0.15);
  --color-glow: rgba(102, 126, 168, 0.25);
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
  --transition: 0.3s ease;
}

*,
*::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-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--color-secondary-2);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

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

/* ==================== 头部导航 ==================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(14, 15, 16, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo:hover {
  color: var(--color-text);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  color: var(--color-secondary-1);
  font-size: 0.88rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}

.main-nav a i {
  margin-right: 4px;
  font-size: 0.8rem;
}

.main-nav a:hover {
  color: var(--color-text);
  background: rgba(134, 152, 179, 0.1);
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1.3rem;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition);
}

.menu-toggle:hover {
  background: var(--color-surface-2);
}

/* ==================== 英雄区 ==================== */
.hero {
  padding: 100px 0 50px;
  background: linear-gradient(135deg, var(--color-bg) 0%, #141820 50%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero-content {
  flex: 1;
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: 4px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-secondary-2);
  margin-bottom: 16px;
  font-weight: 300;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--color-secondary-1);
  margin-bottom: 20px;
  line-height: 1.8;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--color-secondary-1);
}

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

.hero-image {
  flex-shrink: 0;
  width: 420px;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary-3) 0%, var(--color-accent) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(102, 126, 168, 0.3);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(102, 126, 168, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 7px 18px;
  font-size: 0.85rem;
  border-radius: 8px;
  background: var(--color-surface-3);
  color: var(--color-secondary-2);
  border: 1px solid var(--color-border);
}

.btn-sm:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* ==================== 通用板块 ==================== */
.section {
  padding: 70px 0;
}

.section:nth-child(even) {
  background: var(--color-surface);
}

.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 48px;
  position: relative;
}

.section-title i {
  color: var(--color-accent);
  margin-right: 10px;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary-3), var(--color-accent));
  margin: 14px auto 0;
  border-radius: 2px;
}

/* ==================== 新闻动态 ==================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-accent);
}

.news-date {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.news-date i {
  margin-right: 4px;
}

.news-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.news-excerpt {
  font-size: 0.9rem;
  color: var(--color-secondary-1);
  margin-bottom: 14px;
  line-height: 1.7;
}

.news-link {
  font-size: 0.88rem;
  color: var(--color-accent);
  font-weight: 500;
}

.news-link:hover {
  color: var(--color-accent-hover);
}

.news-link i {
  margin-left: 4px;
  transition: transform var(--transition);
}

.news-link:hover i {
  transform: translateX(4px);
}

/* ==================== 媒体画廊 ==================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--color-border);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(14, 15, 16, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-overlay i {
  font-size: 2rem;
  color: #fff;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

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

/* 灯箱 */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.lightbox.active {
  display: flex;
}

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

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: 50%;
  transition: all var(--transition);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox-close {
  top: 20px;
  right: 20px;
}

.lightbox-prev {
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next {
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
}

/* ==================== 用户评价 ==================== */
.reviews-summary {
  text-align: center;
  margin-bottom: 40px;
}

.rating-score {
  margin-bottom: 20px;
}

.score-number {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--color-text);
  line-height: 1;
}

.score-stars {
  color: #f0b840;
  font-size: 1.3rem;
  margin: 8px 0;
}

.score-stars i {
  margin: 0 2px;
}

.score-count {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.rating-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.rating-tag {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-secondary-1);
}

.reviews-carousel {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  min-height: 180px;
}

.review-card {
  display: none;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  animation: fadeIn 0.4s ease;
}

.review-card.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  font-size: 2.4rem;
  color: var(--color-accent);
}

.review-name {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.review-stars {
  color: #f0b840;
  font-size: 0.85rem;
}

.review-stars i {
  margin-right: 1px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--color-secondary-1);
  line-height: 1.8;
  font-style: italic;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
}

.dot.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: scale(1.2);
}

/* ==================== 版本历史 ==================== */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-border));
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

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

.timeline-marker {
  position: absolute;
  left: -33px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-content {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}

.timeline-content:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}

.version-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.version-badge {
  background: linear-gradient(135deg, var(--color-secondary-3), var(--color-accent));
  color: #fff;
  padding: 3px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
}

.version-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--color-secondary-1);
  line-height: 1.7;
  margin-bottom: 12px;
}

.version-meta {
  display: flex;
  gap: 20px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.version-meta i {
  margin-right: 4px;
}

/* ==================== 游戏攻略 ==================== */
.guide-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-btn {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-secondary-1);
  padding: 8px 22px;
  border-radius: 20px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-main);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

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

.guide-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-accent);
}

.guide-card.hidden {
  display: none;
}

.guide-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(102, 126, 168, 0.15), rgba(134, 152, 179, 0.1));
  border-radius: 12px;
  margin-bottom: 16px;
  font-size: 1.3rem;
  color: var(--color-accent);
}

.guide-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.guide-card p {
  font-size: 0.88rem;
  color: var(--color-secondary-1);
  line-height: 1.7;
  margin-bottom: 16px;
}

.guide-footer {
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

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

.guide-difficulty i {
  margin-right: 4px;
  color: var(--color-accent);
}

/* ==================== 章节介绍 ==================== */
.chapters-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.chapter-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: all var(--transition);
}

.chapter-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-accent);
}

.chapter-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: linear-gradient(135deg, var(--color-secondary-3), var(--color-accent));
  color: #fff;
  padding: 3px 12px;
  border-radius: 14px;
  font-size: 0.75rem;
  font-weight: 700;
}

.chapter-badge.side {
  background: linear-gradient(135deg, #8b6db8, #a87dc5);
}

.chapter-number {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.chapter-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.chapter-desc {
  font-size: 0.9rem;
  color: var(--color-secondary-1);
  line-height: 1.7;
  margin-bottom: 16px;
}

.chapter-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.chapter-meta i {
  margin-right: 6px;
  color: var(--color-accent);
  width: 14px;
  text-align: center;
}

.chapter-tone {
  color: var(--color-secondary-2);
}

/* ==================== 常见问题 ==================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item:hover {
  border-color: var(--color-accent);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 24px;
  background: var(--color-surface-2);
  border: none;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-main);
  transition: all var(--transition);
}

.faq-question:hover {
  background: var(--color-surface-3);
}

.faq-question i {
  color: var(--color-accent);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--color-secondary-1);
  line-height: 1.8;
}

/* ==================== 底部 ==================== */
.site-footer {
  background: var(--color-primary);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-grid h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 18px;
}

.footer-grid ul {
  list-style: none;
}

.footer-grid ul li {
  margin-bottom: 10px;
}

.footer-grid ul li a {
  color: var(--color-secondary-1);
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer-grid ul li a:hover {
  color: var(--color-accent-hover);
}

.footer-about {
  font-size: 0.88rem;
  color: var(--color-secondary-1);
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-legal {
  display: flex;
  gap: 20px;
}

.footer-legal a {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-legal a:hover {
  color: var(--color-accent-hover);
}

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

/* ==================== 返回顶部 ==================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(102, 126, 168, 0.3);
  z-index: 900;
}

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

.back-to-top:hover {
  background: var(--color-accent-hover);
  transform: translateY(-3px);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-image {
    width: 100%;
    max-width: 480px;
  }

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

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

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

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

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

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

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(14, 15, 16, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    gap: 4px;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 16px;
    font-size: 0.92rem;
    border-radius: 8px;
  }

  .hero {
    padding: 90px 0 40px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-meta {
    gap: 6px;
  }

  .meta-tag {
    padding: 4px 10px;
    font-size: 0.78rem;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.5rem;
    margin-bottom: 36px;
  }

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

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

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

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

  .timeline {
    padding-left: 30px;
  }

  .timeline-marker {
    left: -23px;
    width: 12px;
    height: 12px;
  }

  .score-number {
    font-size: 2.8rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.7rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .container {
    padding: 0 16px;
  }

  .guide-filters {
    gap: 6px;
  }

  .filter-btn {
    padding: 6px 16px;
    font-size: 0.82rem;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
}