:root {
  --ink: #1a1a1a;
  --soft: #5c5c5c;
  --muted: #888;
  --line: #e0e0e0;
  --accent: #c0392b;
  --accent-hover: #a93226;
  --bg: #f7f7f7;
  --card: #fff;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.wrap { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* HEADER */
header.site { background: #fff; border-bottom: 2px solid var(--accent); }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; flex-wrap: wrap; gap: 12px; }
.brand { font-size: 1.4rem; font-weight: 700; color: var(--ink); letter-spacing: -0.3px; }
.brand span { color: var(--accent); }
.brand small { display: block; font-size: .72rem; color: var(--muted); font-weight: 400; letter-spacing: .5px; }
nav.main { display: flex; gap: 4px; flex-wrap: wrap; }
nav.main a { font-size: .88rem; color: var(--soft); padding: 6px 12px; border-radius: 4px; transition: background .15s; }
nav.main a:hover { background: var(--bg); color: var(--ink); text-decoration: none; }
nav.main a.active { color: var(--accent); font-weight: 600; }

/* HERO */
.hero { background: #fff; border-bottom: 1px solid var(--line); padding: 42px 0 36px; }
.hero h1 { font-size: 2rem; font-weight: 700; line-height: 1.25; margin-bottom: 12px; }
.hero .sub { font-size: 1.05rem; color: var(--soft); max-width: 640px; }

/* CARDS GRID */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 20px; padding: 36px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; }
.card-body { padding: 20px; flex: 1; }
.card-tag { font-size: .72rem; text-transform: uppercase; letter-spacing: 1px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.card h2 { font-size: 1.1rem; margin-bottom: 8px; line-height: 1.35; }
.card p { font-size: .9rem; color: var(--soft); }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--line); }
.card-footer a { font-size: .88rem; font-weight: 600; }

/* ARTICLE */
.article-wrap { display: grid; grid-template-columns: 1fr 280px; gap: 32px; padding: 36px 0 60px; align-items: start; }
.article-body h1 { font-size: 1.85rem; margin-bottom: 10px; line-height: 1.25; }
.article-meta { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 24px; }
.article-body h2 { font-size: 1.25rem; font-weight: 700; margin: 28px 0 10px; }
.article-body h3 { font-size: 1rem; font-weight: 700; margin: 20px 0 8px; }
.article-body p { margin-bottom: 16px; }
.article-body ul, .article-body ol { margin: 0 0 16px 22px; }
.article-body li { margin-bottom: 6px; }
.tip-box { background: #fff9f8; border-left: 4px solid var(--accent); padding: 14px 18px; border-radius: 0 6px 6px 0; margin: 20px 0; }
.tip-box strong { display: block; margin-bottom: 4px; font-size: .9rem; }
.tip-box p { margin: 0; font-size: .9rem; color: var(--soft); }

/* SIDEBAR */
.sidebar { position: sticky; top: 20px; }
.sidebar-box { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 20px; margin-bottom: 18px; }
.sidebar-box h3 { font-size: .9rem; font-weight: 700; text-transform: uppercase; letter-spacing: .8px; color: var(--muted); margin-bottom: 12px; }
.sidebar-box ul { list-style: none; }
.sidebar-box ul li { border-top: 1px solid var(--line); padding: 8px 0; font-size: .9rem; }
.sidebar-box ul li:first-child { border-top: none; padding-top: 0; }

/* TABLE */
.compare-table { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 20px 0 28px; }
.compare-table th { background: var(--accent); color: #fff; padding: 10px 14px; text-align: left; font-weight: 600; }
.compare-table td { padding: 10px 14px; border-bottom: 1px solid var(--line); }
.compare-table tr:nth-child(even) td { background: #fafafa; }
.compare-table .good { color: #27ae60; font-weight: 600; }
.compare-table .bad { color: #c0392b; }

/* CTA */
.cta-block { background: var(--accent); color: #fff; border-radius: 8px; padding: 28px 24px; text-align: center; margin: 28px 0; }
.cta-block h3 { font-size: 1.2rem; margin-bottom: 8px; }
.cta-block p { font-size: .9rem; opacity: .85; margin-bottom: 18px; }
.cta-block a { display: inline-block; background: #fff; color: var(--accent); font-weight: 700; padding: 11px 28px; border-radius: 5px; font-size: .95rem; }
.cta-block a:hover { background: #f0f0f0; text-decoration: none; }

/* PAGE TITLE */
.page-hero { background: #fff; border-bottom: 1px solid var(--line); padding: 32px 0 28px; }
.page-hero h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 8px; }
.page-hero p { color: var(--soft); }

/* BREADCRUMB */
.breadcrumb { font-size: .8rem; color: var(--muted); margin-bottom: 20px; }
.breadcrumb a { color: var(--muted); }

/* FOOTER */
footer.site { background: #fff; border-top: 1px solid var(--line); padding: 28px 0; margin-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-brand { font-size: .95rem; font-weight: 600; color: var(--ink); }
.footer-brand small { display: block; font-size: .75rem; font-weight: 400; color: var(--muted); }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer nav a { font-size: .85rem; color: var(--muted); }
footer nav a:hover { color: var(--ink); }

@media (max-width: 680px) {
  .hero h1 { font-size: 1.5rem; }
  .article-wrap { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .footer-inner { flex-direction: column; }
}