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

:root {
  --blue-900: #0c1b3a;
  --blue-800: #112240;
  --blue-700: #1a365d;
  --green-800: #065f46;
  --green-700: #047857;
  --green-600: #059669;
  --green-500: #10b981;
  --green-400: #34d399;
  --green-300: #6ee7b7;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-800); line-height: 1.7; background: #fff;
  -webkit-font-smoothing: antialiased;
}
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--green-400); outline-offset: 2px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* NAV */
.navbar { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-200); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 1.3rem; color: var(--blue-900); }
.logo-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--blue-700), var(--green-500)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; }
.logo-text span { color: var(--green-600); }
.nav-cta { background: var(--green-700); color: #fff; text-decoration: none; font-weight: 600; font-size: 0.9rem; padding: 10px 20px; border-radius: 8px; white-space: nowrap; }
.nav-cta:hover { background: var(--green-800); }

/* HEADER */
.page-hero { background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); color: #fff; padding: 56px 0 64px; }
.page-hero .container { max-width: 860px; }
.breadcrumb { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; font-size: 0.85rem; color: var(--gray-400); margin-bottom: 22px; }
.breadcrumb li:not(:last-child)::after { content: '›'; margin-left: 6px; }
.breadcrumb a { color: var(--green-300); text-decoration: none; }
.page-hero h1 { font-size: 2.6rem; line-height: 1.15; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 18px; }
.page-hero .lead { font-size: 1.15rem; color: var(--gray-300); max-width: 720px; }
.meta { margin-top: 22px; font-size: 0.85rem; color: var(--gray-400); }

/* ARTICLE */
.article { max-width: 860px; margin: 0 auto; padding: 56px 24px 24px; }
.article h2 { font-size: 1.7rem; line-height: 1.25; color: var(--blue-900); font-weight: 800; margin: 44px 0 14px; letter-spacing: -0.01em; }
.article h3 { font-size: 1.2rem; color: var(--blue-900); font-weight: 700; margin: 28px 0 8px; }
.article p { margin-bottom: 16px; color: var(--gray-700); font-size: 1.05rem; }
.article ul, .article ol { margin: 0 0 18px 22px; color: var(--gray-700); font-size: 1.05rem; }
.article li { margin-bottom: 8px; }
.article a { color: var(--green-700); font-weight: 600; }
.article strong { color: var(--gray-800); }

.toc { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: 14px; padding: 22px 26px; margin-bottom: 8px; }
.toc p { font-weight: 700; color: var(--blue-900); margin-bottom: 8px; font-size: 0.95rem; }
.toc ol { margin-bottom: 0; font-size: 0.98rem; }

.callout { background: rgba(16,185,129,0.08); border-left: 4px solid var(--green-600); border-radius: 0 12px 12px 0; padding: 18px 22px; margin: 22px 0; }
.callout p { margin: 0; }

.checklist { list-style: none; margin-left: 0 !important; }
.checklist li { position: relative; padding-left: 32px; }
.checklist li::before { content: '✓'; position: absolute; left: 0; top: 1px; width: 22px; height: 22px; border-radius: 50%; background: rgba(16,185,129,0.15); color: var(--green-700); font-size: 0.75rem; font-weight: 800; display: flex; align-items: center; justify-content: center; }

.table-wrap { overflow-x: auto; margin: 18px 0 24px; border: 1px solid var(--gray-200); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; min-width: 520px; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--gray-200); vertical-align: top; }
th { background: var(--gray-50); color: var(--blue-900); font-weight: 700; }
tr:last-child td { border-bottom: none; }

/* CTA BOX */
.cta-box { background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); color: #fff; border-radius: 20px; padding: 36px; margin: 48px 0 16px; }
.cta-box h2 { color: #fff; margin: 0 0 10px; font-size: 1.6rem; }
.cta-box p { color: var(--gray-300); margin-bottom: 22px; }
.cta-buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 10px; font-weight: 700; text-decoration: none; font-size: 1rem; }
.article .btn { font-weight: 700; }
.btn-primary { background: var(--green-700); color: #fff !important; }
.btn-primary:hover { background: var(--green-800); }
.btn-wa { background: #25d366; color: #073b1f !important; }
.btn-wa:hover { background: #1ebe5b; }

/* FAQ */
.faq details { border: 1px solid var(--gray-200); border-radius: 12px; margin-bottom: 10px; background: #fff; }
.faq details[open] { border-color: var(--green-500); }
.faq summary { cursor: pointer; padding: 16px 20px; font-weight: 600; color: var(--gray-800); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.3rem; line-height: 1; color: var(--green-700); }
.faq details[open] summary::after { content: '−'; }
.faq details p { padding: 0 20px 16px; margin: 0; font-size: 1rem; }

/* RELATED */
.related { max-width: 860px; margin: 0 auto; padding: 24px 24px 72px; }
.related h2 { font-size: 1.3rem; color: var(--blue-900); margin-bottom: 16px; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.related a { display: block; text-decoration: none; border: 1px solid var(--gray-200); border-radius: 14px; padding: 20px 22px; transition: border-color 0.2s, box-shadow 0.2s; }
.related a:hover { border-color: var(--green-500); box-shadow: 0 10px 15px -3px rgba(0,0,0,0.08); }
.related strong { display: block; color: var(--blue-900); margin-bottom: 4px; }
.related span { color: var(--gray-500); font-size: 0.92rem; }

/* FOOTER */
.footer { background: var(--blue-900); color: var(--gray-400); padding: 40px 0; font-size: 0.88rem; }
.footer .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; align-items: center; }
.footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer a { color: var(--gray-300); text-decoration: none; }
.footer a:hover { color: var(--green-400); }

@media (max-width: 640px) {
  .page-hero { padding: 40px 0 48px; }
  .page-hero h1 { font-size: 1.85rem; }
  .article h2 { font-size: 1.4rem; }
  .cta-box { padding: 28px 22px; }
  .cta-buttons .btn { width: 100%; }
  .related-grid { grid-template-columns: 1fr; }
  .nav-cta { padding: 9px 14px; font-size: 0.82rem; }
}