:root {
  --bg: #f4f6fb;
  --bg-grid: rgba(99,102,241,0.06);
  --fg: #111827;
  --muted: #6b7280;
  --card: #ffffff;
  --border: #e5e7eb;
  --accent: #4f46e5;
  --accent2: #7c3aed;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(79,70,229,0.08);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
}
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header { background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; flex-wrap: wrap; gap: 12px; }
.logo { color: #fff; font-weight: 700; font-size: 1.2rem; }
.main-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.main-nav a { color: #fff; opacity: .9; }
.main-nav a:hover { opacity: 1; text-decoration: none; }

.hero { background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); color: #fff; padding: 48px 24px; border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow); }
.hero h1 { margin: 0 0 12px; font-size: 2rem; }
.hero p { margin: 0; opacity: .9; max-width: 760px; }

.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 16px 0 0; margin: 0; font-size: .9rem; color: var(--muted); }
.breadcrumbs li::after { content: "›"; margin-left: 6px; color: var(--muted); }
.breadcrumbs li:last-child::after { content: ""; }
.breadcrumbs a { color: var(--muted); }

h1 { font-size: 1.8rem; margin: 24px 0 12px; }
h2 { font-size: 1.4rem; margin: 24px 0 10px; }
h3 { font-size: 1.15rem; margin: 18px 0 8px; }

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); transition: transform .15s; }
.card:hover { transform: translateY(-2px); }
.card-title { font-weight: 600; margin: 0 0 6px; }
.card-title a { color: var(--fg); }
.card-meta { color: var(--muted); font-size: .9rem; margin-bottom: 8px; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .78rem; background: #eef2ff; color: var(--accent); margin: 2px; }
.badge.alt { background: #f3e8ff; color: var(--accent2); }
.rating { color: #f59e0b; font-weight: 600; }

.logo-circle { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 1.1rem; background: linear-gradient(135deg, var(--accent), var(--accent2)); flex-shrink: 0; }
.tool-logo { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex-shrink: 0; background: #fff; }

.tool-card { display: flex; gap: 14px; }
.tool-card-body { flex: 1; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; font-size: .9rem; }
th { background: #eef2ff; }

.faq { margin: 24px 0; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; margin-bottom: 10px; box-shadow: var(--shadow); }
.faq-item h3 { margin: 0 0 6px; }

.section { margin: 28px 0; }
.link-list { columns: 2; gap: 20px; }
.link-list a { display: block; padding: 4px 0; }
@media (max-width: 600px) { .link-list { columns: 1; } }

.footer-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; padding: 32px 0; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin: 4px 0; }
.footer-bottom { padding: 12px 0 24px; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--border); }
.site-footer { background: #fff; margin-top: 48px; }

.empty-state { padding: 24px; text-align: center; color: var(--muted); background: var(--card); border: 1px dashed var(--border); border-radius: var(--radius); }

.pagination { display: flex; gap: 8px; margin: 20px 0; }

.article-content { background: var(--card); padding: 24px; border-radius: var(--radius); box-shadow: var(--shadow); }
.article-content p { margin: 0 0 12px; }