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

/* =====================
   CSS 变量 & 全局
   ===================== */
:root {
  --primary: #4361ee;
  --primary-dark: #2d3fc1;
  --secondary: #7209b7;
  --accent: #f72585;
  --success: #06d6a0;
  --warning: #ffd60a;
  --dark: #1a1a2e;
  --dark2: #16213e;
  --text: #2d3436;
  --text-light: #636e72;
  --border: #e0e0e0;
  --bg: #f8f9fa;
  --card-bg: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(67,97,238,0.2);
  --radius: 12px;
  --radius-sm: 6px;
}

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

body {
  font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 14px;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* =====================
   顶部导航栏
   ===================== */
.site-header {
  background: var(--dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-icon { font-size: 24px; }
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}
.logo-text em {
  color: var(--warning);
  font-style: normal;
}

.main-nav {
  display: flex;
  gap: 4px;
  flex: 1;
}
.main-nav a {
  color: rgba(255,255,255,0.85);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: background 0.2s, color 0.2s;
}
.main-nav a:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.header-search {
  display: flex;
  gap: 0;
  flex-shrink: 0;
}
.header-search input {
  padding: 7px 14px;
  border: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 13px;
  width: 200px;
  outline: none;
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.header-search input::placeholder { color: rgba(255,255,255,0.5); }
.header-search button {
  padding: 7px 16px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.2s;
}
.header-search button:hover { background: var(--primary-dark); }

/* =====================
   Hero 区
   ===================== */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 40%, #0f3460 100%);
  color: #fff;
  padding: 60px 0 50px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 60% 40%, rgba(67,97,238,0.15) 0%, transparent 60%),
              radial-gradient(circle at 20% 80%, rgba(114,9,183,0.1) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(90deg, #fff 0%, var(--warning) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
  letter-spacing: 1px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 32px;
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--warning);
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

.btn-hero {
  display: inline-block;
  padding: 14px 40px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  color: #fff !important;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(247,37,133,0.4);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(247,37,133,0.5);
}

/* =====================
   面包屑
   ===================== */
.breadcrumb {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 13px;
  color: var(--text-light);
}
.breadcrumb a { color: var(--primary); }

/* =====================
   公告栏
   ===================== */
.notice-bar {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  padding: 8px 0;
  font-size: 13px;
}
.notice-bar .container {
  display: flex;
  align-items: center;
  gap: 12px;
}
.notice-tag {
  background: var(--warning);
  color: var(--dark);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

/* =====================
   主内容 + 侧边栏布局
   ===================== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  padding-top: 24px;
  padding-bottom: 40px;
  align-items: start;
}

.content-area { min-width: 0; }

/* =====================
   分类区块
   ===================== */
.category-section { margin-bottom: 36px; }

.section-header { margin-bottom: 20px; }
.section-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--primary);
  margin-bottom: 8px;
}
.section-header h2 .icon { font-size: 22px; }
.section-desc { font-size: 13px; color: var(--text-light); }

/* =====================
   卡片网格
   ===================== */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.sim-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
  overflow: hidden;
}
.sim-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.sim-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, #fff 90%, rgba(67,97,238,0.04) 100%);
}
.sim-card.featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 20px;
}

.card-img {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
}
.card-img img {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.card-info { flex: 1; min-width: 0; }
.card-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-right: 60px;
}
.card-desc {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}
.meta-tag {
  font-size: 11px;
  background: var(--bg);
  color: var(--text-light);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.card-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
}
.stars { color: var(--warning); font-size: 14px; letter-spacing: 1px; }
.rating-num { font-size: 14px; font-weight: 700; color: var(--dark); }
.rating-count { font-size: 11px; color: var(--text-light); }

.card-actions { display: flex; gap: 8px; }

.btn-download {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: 0 3px 10px rgba(67,97,238,0.3);
}
.btn-download:hover { opacity: 0.9; transform: translateY(-1px); }

.btn-detail {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-light) !important;
  font-size: 13px;
  transition: border-color 0.2s, color 0.2s;
}
.btn-detail:hover { border-color: var(--primary); color: var(--primary) !important; }

/* =====================
   SEO文章区
   ===================== */
.article-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 36px;
}
.article-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.article-content h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin: 16px 0 8px;
}
.article-content p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 12px;
}
.article-content ul {
  padding-left: 20px;
  margin-bottom: 12px;
}
.article-content ul li {
  font-size: 14px;
  color: var(--text);
  line-height: 2;
}
.article-content strong { color: var(--primary); }

/* =====================
   FAQ区
   ===================== */
.faq-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 36px;
}
.faq-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.faq-q::before {
  content: 'Q';
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}
.faq-a p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  padding-left: 28px;
}

/* =====================
   侧边栏
   ===================== */
.sidebar { display: flex; flex-direction: column; gap: 20px; }

.sidebar-widget {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.widget-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

/* 排行榜 */
.rank-list { list-style: none; }
.rank-list li {
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}
.rank-list li:last-child { border-bottom: none; }
.rank-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 13px;
  transition: color 0.2s;
}
.rank-list a:hover { color: var(--primary); }

.rank-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-light);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-num.rank-1 { background: #ff4444; color: #fff; }
.rank-num.rank-2 { background: #ff8800; color: #fff; }
.rank-num.rank-3 { background: var(--warning); color: var(--dark); }

/* 标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-light);
  transition: all 0.2s;
}
.tag:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 安全提示 */
.notice-widget { background: linear-gradient(135deg, #f0fff4, #e6fffa); border-color: #b7eb8f; }
.notice-list { list-style: none; }
.notice-list li {
  font-size: 13px;
  color: #389e0d;
  padding: 5px 0;
}

/* 配置表 */
.req-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.req-table th, .req-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.req-table th { background: var(--bg); font-weight: 600; color: var(--text); }
.req-table td { color: var(--text-light); }

/* =====================
   Footer
   ===================== */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.7); margin-top: 20px; }

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding: 40px 16px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-col p { font-size: 13px; line-height: 1.8; margin-bottom: 8px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 6px; }
.footer-col ul a { font-size: 13px; color: rgba(255,255,255,0.6); }
.footer-col ul a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 14px 0;
  text-align: center;
}
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #fff; }

/* =====================
   移动端响应式 (神马搜索主要用户为手机端)
   ===================== */
@media (max-width: 768px) {
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 14px; }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 24px; }

  .main-layout {
    grid-template-columns: 1fr;
  }

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

  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 10px 16px;
    gap: 10px;
  }
  .main-nav { display: none; }
  .header-search input { width: 140px; }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 24px 16px;
  }
}

@media (max-width: 480px) {
  .sim-card { flex-direction: column; }
  .card-img { width: 60px; height: 60px; }
  .card-img img { width: 60px; height: 60px; }
  .card-info h3 { padding-right: 0; font-size: 15px; }
  .hero { padding: 40px 0 32px; }
  .hero-stats { flex-direction: column; gap: 12px; }

  .footer-inner { grid-template-columns: 1fr; }
}