/* ===== 全局重置与变量 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #4F46E5;
  --primary-dark: #3730A3;
  --primary-light: #EEF2FF;
  --accent: #F59E0B;
  --success: #10B981;
  --danger: #EF4444;
  --text-primary: #111827;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --border: #E5E7EB;
  --bg-white: #FFFFFF;
  --bg-gray: #F9FAFB;
  --bg-dark: #111827;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --transition: .2s ease;
}

html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text-primary); background: var(--bg-white); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

/* ===== 通用布局 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.bg-gray { background: var(--bg-gray); }

.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.section-header p { color: var(--text-secondary); font-size: 1.05rem; }

/* ===== 按钮 ===== */
.btn-primary {
  background: var(--primary); color: #fff; border: none;
  padding: 10px 22px; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: background var(--transition);
}
.btn-primary:hover { background: var(--primary-dark); }

.btn-outline {
  background: transparent; color: var(--text-primary);
  border: 1.5px solid var(--border); padding: 9px 20px;
  border-radius: var(--radius-sm); font-size: .9rem;
  font-weight: 500; cursor: pointer; transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-outline-dark {
  display: inline-block; border: 1.5px solid var(--text-primary);
  color: var(--text-primary); padding: 12px 28px;
  border-radius: var(--radius-sm); font-weight: 600;
  transition: all var(--transition);
}
.btn-outline-dark:hover { background: var(--text-primary); color: #fff; }

.btn-primary-lg {
  display: inline-block; background: var(--primary); color: #fff;
  padding: 14px 32px; border-radius: var(--radius-md);
  font-size: 1.05rem; font-weight: 700;
  transition: background var(--transition);
}
.btn-primary-lg:hover { background: var(--primary-dark); }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; gap: 32px;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.25rem; }
.logo-icon { font-size: 1.4rem; }
.logo-text { color: var(--primary); }
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-item {
  padding: 6px 14px; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 500; color: var(--text-secondary);
  transition: all var(--transition);
}
.nav-item:hover, .nav-item.active { color: var(--primary); background: var(--primary-light); }
.nav-actions { display: flex; gap: 10px; }
.hamburger { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; }
.mobile-menu { display: none; flex-direction: column; padding: 12px 24px 16px; border-top: 1px solid var(--border); }
.mobile-menu a { padding: 10px 0; font-weight: 500; color: var(--text-secondary); border-bottom: 1px solid var(--border); }
.mobile-menu a:last-child { border-bottom: none; }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 600px;
  display: flex; align-items: center;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4338ca 70%, #6366f1 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(99,102,241,.3) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(245,158,11,.15) 0%, transparent 50%);
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 1200px; margin: 0 auto; padding: 80px 24px;
  text-align: center;
}
.hero-badge {
  display: inline-block; background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.9); padding: 6px 18px;
  border-radius: 100px; font-size: .85rem; font-weight: 500;
  border: 1px solid rgba(255,255,255,.2); margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800;
  color: #fff; line-height: 1.2; margin-bottom: 16px;
}
.highlight {
  background: linear-gradient(90deg, #FCD34D, #F59E0B);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub { color: rgba(255,255,255,.75); font-size: 1.1rem; margin-bottom: 40px; }

/* 搜索框 */
.search-box { max-width: 720px; margin: 0 auto 40px; }
.search-inner {
  display: flex; align-items: center; gap: 8px;
  background: #fff; border-radius: var(--radius-lg);
  padding: 8px 8px 8px 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,.25);
}
.search-icon { font-size: 1.1rem; flex-shrink: 0; }
.search-input {
  flex: 1; border: none; outline: none;
  font-size: 1rem; color: var(--text-primary);
  background: transparent;
}
.search-input::placeholder { color: var(--text-muted); }
.search-tags { display: flex; gap: 6px; flex-shrink: 0; }
.stag {
  background: var(--primary-light); color: var(--primary);
  padding: 4px 10px; border-radius: 100px; font-size: .78rem;
  font-weight: 500; cursor: pointer; transition: all var(--transition);
  white-space: nowrap;
}
.stag:hover { background: var(--primary); color: #fff; }
.search-btn {
  background: var(--primary); color: #fff; border: none;
  padding: 10px 24px; border-radius: var(--radius-md);
  font-size: .95rem; font-weight: 600; cursor: pointer;
  transition: background var(--transition); white-space: nowrap;
}
.search-btn:hover { background: var(--primary-dark); }
.search-hot { color: rgba(255,255,255,.65); font-size: .85rem; margin-top: 12px; }
.search-hot a { color: rgba(255,255,255,.85); margin: 0 6px; cursor: pointer; transition: color var(--transition); }
.search-hot a:hover { color: #FCD34D; }

/* 统计数字 */
.hero-stats {
  display: flex; align-items: center; justify-content: center;
  gap: 0; flex-wrap: wrap;
}
.stat-item { text-align: center; padding: 0 32px; }
.stat-num { display: block; font-size: 1.8rem; font-weight: 800; color: #fff; }
.stat-label { font-size: .85rem; color: rgba(255,255,255,.65); }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,.2); }

/* ===== 快捷导航 ===== */
.quick-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.quick-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-white); border: 1.5px solid var(--border);
  border-radius: var(--radius-md); padding: 20px 24px;
  transition: all var(--transition); cursor: pointer;
}
.quick-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.qc-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; flex-shrink: 0; }
.qc-body { flex: 1; }
.qc-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.qc-body p { font-size: .82rem; color: var(--text-secondary); }
.qc-arrow { color: var(--text-muted); font-size: 1.1rem; transition: transform var(--transition); }
.quick-card:hover .qc-arrow { transform: translateX(4px); color: var(--primary); }

/* ===== 行业面经 ===== */
.industry-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }
.itab {
  padding: 8px 18px; border-radius: 100px;
  border: 1.5px solid var(--border); background: var(--bg-white);
  font-size: .88rem; font-weight: 500; cursor: pointer;
  transition: all var(--transition); color: var(--text-secondary);
}
.itab:hover, .itab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.company-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-white); border: 1.5px solid var(--border);
  border-radius: var(--radius-md); padding: 16px;
  transition: all var(--transition);
}
.company-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cc-logo {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 800; flex-shrink: 0;
}
.cc-info { flex: 1; min-width: 0; }
.cc-info h4 { font-size: .9rem; font-weight: 700; margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cc-info p { font-size: .75rem; color: var(--text-secondary); margin-bottom: 6px; }
.cc-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.cc-tags span { background: var(--bg-gray); color: var(--text-secondary); padding: 2px 7px; border-radius: 4px; font-size: .7rem; }
.cc-count { font-size: .78rem; color: var(--primary); font-weight: 600; white-space: nowrap; }

.section-more { text-align: center; margin-top: 40px; }

/* ===== 内容列表 ===== */
.content-tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 2px solid var(--border); }
.ctab {
  padding: 10px 20px; border: none; background: none;
  font-size: .9rem; font-weight: 500; cursor: pointer;
  color: var(--text-secondary); border-bottom: 2px solid transparent;
  margin-bottom: -2px; transition: all var(--transition);
}
.ctab:hover { color: var(--primary); }
.ctab.active { color: var(--primary); border-bottom-color: var(--primary); }

.content-list { display: flex; flex-direction: column; gap: 16px; }
.content-item {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--bg-white); border: 1.5px solid var(--border);
  border-radius: var(--radius-md); padding: 20px;
  transition: all var(--transition);
}
.content-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.ci-thumb {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; flex-shrink: 0;
}
.article-thumb { background: #EEF2FF; }
.video-thumb { background: #FFF1F2; }
.download-thumb { background: #F0FDF4; }
.ci-body { flex: 1; min-width: 0; }
.ci-meta { display: flex; gap: 8px; margin-bottom: 8px; }
.tag-industry, .tag-type {
  padding: 2px 10px; border-radius: 4px; font-size: .75rem; font-weight: 600;
}
.tag-industry { background: var(--primary-light); color: var(--primary); }
.tag-type { background: #FFF7ED; color: #D97706; }
.ci-body h4 { font-size: .95rem; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
.ci-body p { font-size: .83rem; color: var(--text-secondary); margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ci-footer { display: flex; gap: 16px; font-size: .78rem; color: var(--text-muted); flex-wrap: wrap; }
.free-tag { background: #D1FAE5; color: #065F46; padding: 2px 8px; border-radius: 4px; font-weight: 600; }
.download-btn {
  background: var(--primary); color: #fff; border: none;
  padding: 8px 18px; border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 600; cursor: pointer;
  align-self: center; flex-shrink: 0; transition: background var(--transition);
}
.download-btn:hover { background: var(--primary-dark); }

/* ===== 工具导航 ===== */
.tools-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.tool-card {
  background: var(--bg-white); border: 1.5px solid var(--border);
  border-radius: var(--radius-md); padding: 24px 16px;
  text-align: center; transition: all var(--transition); cursor: pointer;
}
.tool-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.tc-icon { font-size: 2rem; margin-bottom: 10px; }
.tc-name { font-size: .9rem; font-weight: 700; margin-bottom: 4px; }
.tc-desc { font-size: .75rem; color: var(--text-secondary); }

/* ===== Offer比较预览 ===== */
.offer-banner {
  background: linear-gradient(135deg, #1e1b4b, #4338ca);
  border-radius: var(--radius-lg); padding: 56px 64px;
  display: flex; align-items: center; gap: 64px;
}
.ob-text { flex: 1; }
.ob-text h2 { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.ob-text p { color: rgba(255,255,255,.75); margin-bottom: 28px; font-size: 1rem; }
.ob-visual { flex-shrink: 0; }
.offer-compare-demo {
  display: flex; align-items: center; gap: 20px;
  background: rgba(255,255,255,.1); border-radius: var(--radius-md);
  padding: 24px 32px; border: 1px solid rgba(255,255,255,.2);
}
.ocd-item { text-align: center; }
.ocd-company { font-size: .85rem; color: rgba(255,255,255,.7); margin-bottom: 4px; }
.ocd-salary { font-size: 1.3rem; font-weight: 800; color: #FCD34D; }
.ocd-city { font-size: .8rem; color: rgba(255,255,255,.6); margin-top: 4px; }
.ocd-vs { font-size: 1.2rem; font-weight: 800; color: rgba(255,255,255,.5); }

/* ===== 页脚 ===== */
.footer { background: var(--bg-dark); color: rgba(255,255,255,.7); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand .logo-text { color: #818CF8; }
.footer-brand p { font-size: .88rem; line-height: 1.7; margin-bottom: 16px; }
.social-links { display: flex; gap: 12px; }
.social-links a {
  background: rgba(255,255,255,.1); color: rgba(255,255,255,.8);
  padding: 6px 14px; border-radius: var(--radius-sm); font-size: .82rem;
  transition: background var(--transition);
}
.social-links a:hover { background: var(--primary); }
.footer-col h4 { color: #fff; font-size: .9rem; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; font-size: .85rem; margin-bottom: 10px; transition: color var(--transition); }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; text-align: center; font-size: .82rem; }

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-dark); color: #fff; padding: 12px 24px;
  border-radius: var(--radius-md); font-size: .9rem; font-weight: 500;
  opacity: 0; transition: all .3s ease; pointer-events: none; z-index: 9999;
  white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== 搜索结果页 ===== */
.search-results-page { padding: 40px 0; min-height: 60vh; }
.search-results-header { margin-bottom: 32px; }
.search-results-header h2 { font-size: 1.4rem; font-weight: 700; }
.search-results-header p { color: var(--text-secondary); margin-top: 4px; }
.no-results { text-align: center; padding: 80px 0; color: var(--text-muted); }
.no-results .nr-icon { font-size: 4rem; margin-bottom: 16px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: block; }
  .mobile-menu.open { display: flex; }
  .hero-content { padding: 60px 24px; }
  .search-inner { flex-wrap: wrap; }
  .search-tags { display: none; }
  .hero-stats { gap: 0; }
  .stat-item { padding: 0 16px; }
  .stat-num { font-size: 1.4rem; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
  .industry-grid { grid-template-columns: 1fr 1fr; }
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
  .offer-banner { flex-direction: column; padding: 40px 32px; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 48px 0; }
}

@media (max-width: 480px) {
  .quick-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-divider { display: none; }
  .hero-stats { gap: 16px; }
}