/* ============================================
   玩物社区 - 游戏解说与视频社区原创样式表
   品牌：玩物社区 | 域名：acmst.cn
   定位：国内游戏解说公司 + 视频社区
   配色：电竞蓝 #00D4FF / 战斗红 #FF4E50 / 金色 #FFD700
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --primary: #00D4FF;
  --secondary: #FF4E50;
  --accent: #FFD700;
  --bg-dark: #0B0E17;
  --bg-card: #131729;
  --bg-card-alt: #1A1F35;
  --text-main: #E8ECF1;
  --text-sub: #8B92A5;
  --text-muted: #5A6178;
  --border-color: #232840;
  --gradient-primary: linear-gradient(135deg, #00D4FF 0%, #0088CC 100%);
  --gradient-hot: linear-gradient(135deg, #FF4E50 0%, #F9D423 100%);
  --gradient-gold: linear-gradient(135deg, #FFD700 0%, #FF8C00 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 20px rgba(0,212,255,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1280px;
  --header-h: 64px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

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

ul, ol { list-style: none; }

.container { max-width: var(--max-width); 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(11,14,23,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-h);
}

.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
}

.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; color: var(--text-main); }
.logo:hover { color: var(--primary); }
.logo-img { width: 38px; height: 38px; border-radius: 8px; }

.main-nav { display: flex; gap: 6px; }
.main-nav a {
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--text-sub); font-weight: 500;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); background: rgba(0,212,255,0.08); }

.mobile-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 1.5rem; cursor: pointer; }

/* === 搜索栏 === */
.search-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
  margin-top: var(--header-h);
}

.search-wrap {
  max-width: 680px; margin: 0 auto; position: relative;
}

.search-wrap input {
  width: 100%; padding: 12px 48px 12px 20px;
  background: var(--bg-card-alt); border: 1px solid var(--border-color);
  border-radius: 50px; color: var(--text-main); font-size: 0.95rem;
  outline: none; transition: var(--transition);
}

.search-wrap input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,212,255,0.12); }
.search-wrap input::placeholder { color: var(--text-muted); }

.search-wrap button {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  background: var(--gradient-primary); border: none; border-radius: 50%;
  width: 38px; height: 38px; color: #fff; font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.search-wrap button:hover { transform: translateY(-50%) scale(1.08); }

/* === Hero Banner === */
.hero {
  position: relative; overflow: hidden;
  min-height: 520px; display: flex; align-items: center;
}

.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: brightness(0.45);
}

.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(11,14,23,0.3) 0%, rgba(11,14,23,0.85) 100%);
}

.hero-content {
  position: relative; z-index: 2; text-align: center;
  max-width: 800px; margin: 0 auto; padding: 80px 20px 60px;
}

.hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.hero h1 .brand-highlight { color: var(--primary); }
.hero h1 .sub-highlight { color: var(--accent); }

.hero-desc { font-size: 1.1rem; color: var(--text-sub); margin-bottom: 32px; line-height: 1.8; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 28px; }
.hero-tags span {
  padding: 6px 16px; background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2); border-radius: 50px;
  font-size: 0.85rem; color: var(--primary);
}

.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px; font-weight: 600;
  font-size: 0.95rem; cursor: pointer; border: none;
  transition: var(--transition);
}

.btn-primary { background: var(--gradient-primary); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,212,255,0.3); color: #fff; }

.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: var(--bg-dark); }

.btn-gold { background: var(--gradient-gold); color: var(--bg-dark); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,215,0,0.3); color: var(--bg-dark); }

/* === 通用板块 === */
.section { padding: 72px 0; }
.section-dark { background: var(--bg-card); }

.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.section-header h2 .hl { color: var(--primary); }
.section-header p { color: var(--text-sub); font-size: 1rem; max-width: 640px; margin: 0 auto; }

/* === 视频卡片网格 === */
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.video-card {
  background: var(--bg-card); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
  border: 1px solid var(--border-color);
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); border-color: var(--primary); }

.video-thumb {
  position: relative; aspect-ratio: 16/9; overflow: hidden;
}

.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.video-card:hover .video-thumb img { transform: scale(1.06); }

.play-btn {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0; transition: var(--transition);
}
.video-card:hover .play-btn { opacity: 1; }

.play-btn span {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff;
  box-shadow: 0 4px 20px rgba(0,212,255,0.4);
}

.video-duration {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75); padding: 2px 8px;
  border-radius: 4px; font-size: 0.75rem; color: #fff;
}

.video-info { padding: 14px; }
.video-info h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-meta { display: flex; gap: 14px; font-size: 0.8rem; color: var(--text-muted); }
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* === 服务卡片 === */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.service-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 32px 24px; text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.service-card:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); transform: translateY(-4px); }

.service-icon {
  width: 64px; height: 64px; border-radius: 16px;
  background: rgba(0,212,255,0.1); margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
}

.service-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.service-card p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.6; }

/* === 娱乐专区 === */
.ent-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.ent-card {
  background: var(--bg-card); border-radius: var(--radius);
  overflow: hidden; display: flex; border: 1px solid var(--border-color);
  transition: var(--transition);
}
.ent-card:hover { border-color: var(--secondary); box-shadow: 0 0 20px rgba(255,78,80,0.15); }

.ent-card-img { width: 200px; min-height: 160px; flex-shrink: 0; }
.ent-card-img img { width: 100%; height: 100%; object-fit: cover; }

.ent-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; justify-content: center; }
.ent-card-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
.ent-card-body p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.6; }
.ent-card-body .tag { display: inline-block; margin-top: 10px; padding: 3px 12px; background: rgba(255,78,80,0.12); color: var(--secondary); border-radius: 50px; font-size: 0.78rem; }

/* === AI赋能 === */
.ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }

.ai-img { border-radius: var(--radius); overflow: hidden; }
.ai-img img { width: 100%; }

.ai-features { display: grid; gap: 20px; }

.ai-feature {
  background: var(--bg-card-alt); padding: 20px; border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}
.ai-feature h4 { font-size: 1rem; margin-bottom: 6px; color: var(--primary); }
.ai-feature p { font-size: 0.88rem; color: var(--text-sub); }

/* === 社区板块 === */
.community-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.community-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 24px; text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.community-card:hover { border-color: var(--accent); box-shadow: 0 0 20px rgba(255,215,0,0.1); }

.community-card .emoji { font-size: 2.4rem; margin-bottom: 12px; }
.community-card h3 { font-size: 1rem; margin-bottom: 8px; }
.community-card p { font-size: 0.85rem; color: var(--text-sub); }
.community-card .count { margin-top: 10px; font-size: 0.8rem; color: var(--accent); }

/* === 专家团队 === */
.expert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.expert-card {
  background: var(--bg-card); border-radius: var(--radius);
  overflow: hidden; text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.expert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); }

.expert-avatar { width: 100%; aspect-ratio: 1; object-fit: cover; }

.expert-body { padding: 20px; }
.expert-body h3 { font-size: 1.05rem; margin-bottom: 4px; }
.expert-body .role { color: var(--primary); font-size: 0.85rem; margin-bottom: 8px; }
.expert-body p { font-size: 0.82rem; color: var(--text-sub); line-height: 1.5; margin-bottom: 12px; }

.expert-links { display: flex; gap: 8px; justify-content: center; }
.expert-links a {
  padding: 6px 14px; border-radius: 50px; font-size: 0.78rem;
  border: 1px solid var(--border-color); color: var(--text-sub);
}
.expert-links a:hover { border-color: var(--primary); color: var(--primary); }

/* === 合作品牌墙 === */
.partner-wall {
  display: flex; flex-wrap: wrap; gap: 20px;
  justify-content: center; align-items: center;
}

.partner-item {
  background: var(--bg-card-alt); padding: 16px 32px;
  border-radius: var(--radius-sm); border: 1px solid var(--border-color);
  font-size: 1rem; font-weight: 600; color: var(--text-sub);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); }

/* === How-To 指南 === */
.howto-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.howto-step {
  text-align: center; padding: 24px 16px;
  background: var(--bg-card); border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--gradient-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 700; margin: 0 auto 16px;
}

.howto-step h4 { font-size: 0.95rem; margin-bottom: 8px; }
.howto-step p { font-size: 0.82rem; color: var(--text-sub); }

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

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

.faq-q {
  padding: 18px 24px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  font-weight: 600; font-size: 0.95rem;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q .arrow { transition: transform 0.3s; font-size: 0.8rem; color: var(--text-muted); }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }

.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
  padding: 0 24px;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 24px 18px; }
.faq-a p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.7; }

/* === 用户评价 === */
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.review-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 24px; border: 1px solid var(--border-color);
}

.review-stars { color: var(--accent); font-size: 0.9rem; margin-bottom: 12px; }
.review-card blockquote { font-size: 0.9rem; color: var(--text-sub); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-author .avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--gradient-primary); display: flex; align-items: center; justify-content: center; font-size: 0.85rem; color: #fff; font-weight: 600; }
.review-author .name { font-size: 0.85rem; font-weight: 600; }
.review-author .date { font-size: 0.75rem; color: var(--text-muted); }

/* === 联系我们 === */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }

.contact-info { display: grid; gap: 16px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-item .icon { width: 40px; height: 40px; border-radius: 10px; background: rgba(0,212,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.contact-item .text h4 { font-size: 0.9rem; margin-bottom: 2px; }
.contact-item .text p { font-size: 0.85rem; color: var(--text-sub); }

.contact-qr { display: flex; gap: 24px; justify-content: center; align-items: flex-start; }
.qr-box { text-align: center; }
.qr-box img { width: 140px; height: 140px; border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
.qr-box p { font-size: 0.8rem; color: var(--text-sub); margin-top: 8px; }

/* === 社交分享 === */
.share-bar { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; padding: 24px 0; }
.share-btn {
  padding: 8px 20px; border-radius: 50px; font-size: 0.85rem;
  background: var(--bg-card-alt); border: 1px solid var(--border-color);
  color: var(--text-sub); cursor: pointer; transition: var(--transition);
}
.share-btn:hover { border-color: var(--primary); color: var(--primary); }

/* === 页脚 === */
.site-footer {
  background: var(--bg-card); border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }

.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 0.85rem; color: var(--text-sub); line-height: 1.7; }

.footer-col h4 { font-size: 0.95rem; margin-bottom: 14px; color: var(--text-main); }
.footer-col a { display: block; font-size: 0.85rem; color: var(--text-sub); padding: 4px 0; }
.footer-col a:hover { color: var(--primary); }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px; text-align: center;
  font-size: 0.82rem; color: var(--text-muted);
}

.footer-bottom a { color: var(--text-sub); }
.footer-bottom a:hover { color: var(--primary); }

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 0; font-size: 0.85rem; color: var(--text-muted);
  margin-top: var(--header-h);
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 8px; }

/* === 内页通用 === */
.page-hero {
  padding: 80px 0 40px; text-align: center;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
  margin-top: var(--header-h);
}
.page-hero h1 { font-size: 2.2rem; margin-bottom: 12px; }
.page-hero p { color: var(--text-sub); font-size: 1rem; }

.page-content { padding: 48px 0; }
.page-content p { margin-bottom: 16px; line-height: 1.8; color: var(--text-sub); }
.page-content h2 { font-size: 1.6rem; margin: 32px 0 16px; color: var(--text-main); }
.page-content h3 { font-size: 1.2rem; margin: 24px 0 12px; color: var(--text-main); }

/* === 响应式 === */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--bg-card); flex-direction: column; padding: 16px; border-bottom: 1px solid var(--border-color); }
  .main-nav.open { display: flex; }
  .mobile-toggle { display: block; }

  .hero h1 { font-size: 1.8rem; }
  .hero-desc { font-size: 0.95rem; }

  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .service-grid { grid-template-columns: 1fr; }
  .ent-grid { grid-template-columns: 1fr; }
  .ent-card { flex-direction: column; }
  .ent-card-img { width: 100%; min-height: 180px; }
  .ai-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }

  .section { padding: 48px 0; }
  .section-header h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
  .hero-tags span { font-size: 0.78rem; padding: 4px 12px; }
}

/* === 动画 === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeInUp 0.6s ease forwards; }

/* === 滚动条 === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }