/* Tailwind CSS CDN */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* ===================== CSS 变量 ===================== */
:root {
  --primary: #1e40af;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --accent: #f59e0b;
  --success: #10b981;
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --bg-card2: #162032;
  --border: #1e3a5f;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #cbd5e1;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --transition: all 0.3s ease;
}

/* ===================== 基础重置 ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; }
em { font-style: normal; }

/* ===================== 容器 ===================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.4);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2563eb, #1e40af);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.5);
}
.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  box-shadow: 0 4px 20px rgba(16,185,129,0.4);
}
.btn-success:hover {
  background: linear-gradient(135deg, #059669, #047857);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(16,185,129,0.5);
}
.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: rgba(255,255,255,0.25);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 36px; font-size: 17px; border-radius: 10px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }

/* ===================== 顶部导航 ===================== */
.site-header {
  background: rgba(15,23,42,0.95);
  border-bottom: 1px solid rgba(30,64,175,0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }
nav a {
  color: var(--text-muted);
  font-size: 14px;
  margin-left: 28px;
  font-weight: 500;
  position: relative;
}
nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-light);
  transition: width 0.3s;
}
nav a:hover { color: #fff; }
nav a:hover::after { width: 100%; }
.nav-cta { margin-left: 24px; padding: 10px 22px; font-size: 14px; }
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 12px 0;
}
.mobile-nav a {
  padding: 12px 24px;
  color: var(--text-light);
  font-size: 15px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mobile-nav a:hover { background: rgba(59,130,246,0.1); color: #fff; }
.mobile-nav.open { display: flex; }

/* ===================== Hero 区 ===================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0a1628 0%, #0f2147 40%, #0a1628 100%);
  padding: 90px 0 0;
  overflow: hidden;
  min-height: 640px;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 0%, rgba(59,130,246,0.18) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  padding-bottom: 60px;
}
.badge {
  display: inline-flex;
  align-items: center;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.35);
  color: #93c5fd;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.3px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -1px;
  line-height: 1.15;
}
.hero h1 em {
  background: linear-gradient(90deg, #60a5fa 0%, #a78bfa 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero p strong { color: #93c5fd; }
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 52px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 20px 24px;
  backdrop-filter: blur(10px);
}
.stat-item {
  text-align: center;
  flex: 1;
}
.stat-item strong {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: #60a5fa;
  line-height: 1.2;
}
.stat-item span {
  font-size: 12px;
  color: var(--text-muted);
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}
.hero-visual {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 52%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 40px 40px 0;
  z-index: 2;
}
.mockup-window {
  width: 100%;
  max-width: 560px;
  background: #0d1b2e;
  border-radius: 14px;
  border: 1px solid rgba(59,130,246,0.3);
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.04);
  overflow: hidden;
}
.mockup-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #162032;
  border-bottom: 1px solid rgba(59,130,246,0.15);
}
.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28c840; }
.mockup-title {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 4px;
  flex: 1;
  text-align: center;
}
.mockup-screen {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.mockup-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.mockup-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.4), transparent);
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 20px;
}
.play-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(15,23,42,0.85);
  border: 1px solid rgba(59,130,246,0.4);
  border-radius: 50px;
  padding: 10px 18px 10px 10px;
  backdrop-filter: blur(8px);
}
.play-badge span {
  font-size: 13px;
  color: #93c5fd;
  font-weight: 600;
}

/* ===================== 信任背书条 ===================== */
.trust-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.trust-bar .container {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.trust-label {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}
.trust-logos {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}
.trust-item {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 500;
  white-space: nowrap;
}

/* ===================== section 通用 ===================== */
.section { padding: 90px 0; }
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-header.light { color: var(--text-main); }
.section-tag {
  display: inline-block;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  color: #93c5fd;
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.section-header h2 em {
  background: linear-gradient(90deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-header p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.8;
}

/* ===================== 产品特性 ===================== */
.features { background: #0a1628; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.5), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59,130,246,0.4);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.feature-card:hover::before { opacity: 1; }
.feature-card.featured {
  border-color: rgba(245,158,11,0.4);
  background: linear-gradient(135deg, var(--bg-card), #1c1f10);
}
.feature-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--accent);
  color: #000;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
}
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.feature-list {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.feature-list li {
  font-size: 13px;
  color: var(--text-light);
  padding-left: 16px;
  position: relative;
}
.feature-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--primary-light);
  font-weight: 700;
}

/* ===================== 下载区 ===================== */
.download-section {
  background: linear-gradient(135deg, #060d1a 0%, #0f1e3d 50%, #060d1a 100%);
}
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 40px;
}
.download-card {
  background: var(--bg-card);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 16px;
  padding: 36px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.download-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6);
}
.download-card-lite::before {
  background: linear-gradient(90deg, #10b981, #3b82f6);
}
.download-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  border-color: rgba(59,130,246,0.5);
}
.download-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.download-card-header h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
}
.product-subtitle {
  font-size: 13px;
  color: var(--text-muted);
}
.version-tag {
  margin-left: auto;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  color: #93c5fd;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}
.version-tag.green {
  background: rgba(16,185,129,0.15);
  border-color: rgba(16,185,129,0.3);
  color: #6ee7b7;
}
.download-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.download-features {
  margin-bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.download-features li {
  font-size: 14px;
  color: var(--text-light);
}
.download-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.download-count {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 12px;
}

/* 系统要求 */
.sysreq-box {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.sysreq-box h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
  text-align: center;
}
.sysreq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.sysreq-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}
.sysreq-item.recommended {
  border-color: rgba(245,158,11,0.3);
  background: rgba(245,158,11,0.04);
}
.sysreq-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.sysreq-item ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sysreq-item li {
  font-size: 14px;
  color: var(--text-light);
}

/* ===================== 支持游戏 ===================== */
.games-section { background: #0a1628; }
.games-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.game-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.game-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59,130,246,0.4);
  box-shadow: var(--shadow);
}
.game-img {
  height: 160px;
  overflow: hidden;
}
.game-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.game-card:hover .game-img img { transform: scale(1.06); }
.game-info {
  padding: 20px;
}
.game-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.game-tag {
  background: rgba(59,130,246,0.15);
  color: #93c5fd;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 100px;
  font-weight: 600;
}
.game-rating {
  font-size: 12px;
  margin: 8px 0;
}
.game-info p {
  font-size: 13px;
  color: var(--text-muted);
}
.game-card-more {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(30,64,175,0.3), rgba(139,92,246,0.2));
  border-style: dashed;
  min-height: 260px;
}
.game-more-content {
  text-align: center;
}
.more-number {
  display: block;
  font-size: 52px;
  font-weight: 900;
  color: #3b82f6;
  line-height: 1;
  margin-bottom: 8px;
}
.game-more-content p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 15px;
}

/* ===================== 用户评价 ===================== */
.reviews-section {
  background: linear-gradient(135deg, #060d1a 0%, #0f1e3d 50%, #060d1a 100%);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.review-card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.review-stars {
  font-size: 16px;
  margin-bottom: 14px;
}
.review-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}
.reviewer {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.reviewer img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.reviewer strong {
  display: block;
  font-size: 14px;
  color: #fff;
}
.reviewer span {
  font-size: 12px;
  color: var(--text-muted);
}
.rating-summary {
  display: flex;
  align-items: center;
  gap: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
  flex-wrap: wrap;
}
.overall-rating {
  text-align: center;
}
.big-rating {
  display: block;
  font-size: 64px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stars-display {
  font-size: 18px;
  margin-bottom: 4px;
}
.overall-rating span {
  font-size: 13px;
  color: var(--text-muted);
}
.rating-bars {
  flex: 1;
  min-width: 200px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rating-bar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}
.rating-bar-item .bar {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.07);
  border-radius: 4px;
  overflow: hidden;
}
.rating-bar-item .fill {
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
  border-radius: 4px;
  transition: width 1s ease;
}
.rating-total {
  font-size: 14px;
  color: var(--text-muted);
  white-space: nowrap;
}
.rating-total strong { color: #fff; }

/* ===================== FAQ ===================== */
.faq-section { background: #0a1628; }
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(59,130,246,0.3);
}
.faq-item[open] {
  border-color: rgba(59,130,246,0.4);
}
.faq-item summary {
  padding: 22px 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}
.faq-item summary::after {
  content: '+';
  font-size: 22px;
  color: var(--primary-light);
  font-weight: 300;
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 28px 22px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.9;
}

/* ===================== 文章区 ===================== */
.article-section { background: var(--bg-dark); }
.article-container {
  max-width: 860px;
}
.article-container > h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.article-toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary-light);
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 36px;
}
.article-toc h4 {
  font-size: 14px;
  font-weight: 700;
  color: #93c5fd;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.article-toc ol {
  list-style: decimal;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.article-toc a {
  color: var(--text-light);
  font-size: 14px;
}
.article-toc a:hover { color: #60a5fa; }
.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin: 36px 0 14px;
  padding-left: 14px;
  border-left: 3px solid var(--primary-light);
}
.article-body p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 16px;
}
.article-body ul, .article-body ol {
  margin: 12px 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}
.article-body strong { color: var(--text-light); }

/* ===================== 联系我们 ===================== */
.contact-section {
  background: linear-gradient(135deg, #060d1a 0%, #0f1e3d 50%, #060d1a 100%);
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover {
  border-color: rgba(59,130,246,0.4);
  transform: translateY(-4px);
}
.contact-icon {
  font-size: 36px;
  margin-bottom: 14px;
}
.contact-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.contact-card p {
  font-size: 14px;
  color: var(--primary-light);
  margin-bottom: 6px;
  font-weight: 500;
}
.contact-card span {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===================== CTA ===================== */
.cta-section {
  background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(255,255,255,0.12) 0%, transparent 60%);
}
.cta-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
}
.cta-section p {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  position: relative;
}
.cta-section .btn-primary {
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  position: relative;
}
.cta-section .btn-primary:hover {
  background: rgba(255,255,255,0.25);
  border-color: #fff;
}

/* ===================== 页脚 ===================== */
.site-footer {
  background: #060d1a;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}
.footer-copyright {
  font-size: 13px;
  color: #475569;
}
.footer-links h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
}
.footer-links a:hover { color: #60a5fa; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: #334155;
  margin-bottom: 6px;
}

/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
  .hero-visual { display: none; }
  .hero-content { max-width: 100%; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .games-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr; max-width: 540px; margin: 0 auto 48px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  nav, .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .hero { padding: 64px 0 0; }
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 80%; height: 1px; }
  .features-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .sysreq-grid { grid-template-columns: 1fr; }
  .games-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .rating-summary { flex-direction: column; align-items: flex-start; gap: 24px; }
  .trust-bar .container { flex-direction: column; gap: 12px; }
  .trust-logos { gap: 16px; }
  .download-card { padding: 24px 20px; }
  .hero-stats { padding: 16px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.8rem; }
  .btn-lg { padding: 14px 24px; font-size: 15px; }
  .features-grid, .download-grid, .games-grid { gap: 16px; }
  .sysreq-box { padding: 24px 16px; }
  .article-container { padding: 0 16px; }
  .faq-item summary { padding: 16px 20px; }
  .faq-answer { padding: 0 20px 16px; padding-top: 14px; }
}

/* ===================== 动画 ===================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-content { animation: fadeUp 0.7s ease both; }
.badge { animation: fadeUp 0.5s ease both; }