/* Theme C — app style: solid colour header bar, grey canvas, white panels, left-hand TOC */
:root {
  --bg: #f5f5f8;
  --panel: #ffffff;
  --line: #e6e6ee;
  --text: #22222c;
  --muted: #6e6e7d;
  --pink: #f0287a;
  --pink-2: #ff6aa8;
  --pink-dark: #c01462;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.75 system-ui, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--pink-dark); }
a:hover { color: var(--pink); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 800; letter-spacing: -.3px; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.container.narrow { max-width: 860px; }

.topbar { background: #22222c; color: #ddd; text-align: center; font-size: 13px; padding: 6px 16px; }
.topbar a { color: #fff; font-weight: 700; }

.site-header { background: var(--pink); position: sticky; top: 0; z-index: 30; }
.nav { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { color: #fff; font-weight: 900; font-size: 22px; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.logo::before { content: ""; width: 26px; height: 26px; border-radius: 7px; background: #fff; box-shadow: inset 0 0 0 7px rgba(240, 40, 122, .9); }
.logo:hover { color: #fff; }
.logo small { font-size: 12px; opacity: .8; font-weight: 700; }
.nav-links { display: flex; gap: 2px; list-style: none; margin: 0 0 0 auto; padding: 0; }
.nav-links a { display: block; color: rgba(255,255,255,.88); text-decoration: none; font-weight: 600; font-size: 15px; padding: 8px 14px; border-radius: 8px; }
.nav-links a:hover, .nav-links a.active { background: rgba(255,255,255,.18); color: #fff; }
.menu-toggle { display: none; margin-left: auto; background: none; border: 0; font-size: 26px; color: #fff; cursor: pointer; }

.btn { display: inline-flex; align-items: center; justify-content: center; background: var(--pink); color: #fff; font-weight: 700; font-size: 15px; padding: 11px 22px; border-radius: 8px; text-decoration: none; border: 0; white-space: nowrap; }
.btn:hover { background: var(--pink-dark); color: #fff; }
.btn-lg { font-size: 16px; padding: 14px 28px; }
.btn-ghost { background: var(--panel); color: var(--text); border: 1px solid var(--line); }
.btn-ghost:hover { background: #fff; color: var(--pink-dark); border-color: var(--pink); }

.hero { padding: 40px 0 10px; }
.hero > .container > .hero-inner, .hero-split { background: var(--panel); border-radius: 14px; padding: 40px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.hero-inner { position: relative; }
.kicker { display: inline-block; background: #fde7f1; color: var(--pink-dark); font-size: 12px; font-weight: 800; padding: 4px 10px; border-radius: 6px; margin-bottom: 14px; text-transform: uppercase; letter-spacing: .6px; }
.hero h1 { font-size: 42px; }
.hero h1 span { background: linear-gradient(transparent 62%, #ffd0e4 62%); }
.lead { font-size: 18px; color: #4a4a58; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 18px; }
.points { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.points li { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px; font-size: 13px; font-weight: 600; color: #4a4a58; }
.hero-split { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: start; }
.quick { background: #22222c; color: #eee; border-radius: 12px; padding: 22px 24px; }
.quick h2 { color: #fff; font-size: 18px; }
.quick ul { margin: 0; padding-left: 1.1em; font-size: 15px; }
.quick li { margin-bottom: 7px; }

.section-title { font-size: 24px; margin-bottom: 18px; }
.guides { padding: 34px 0 10px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.card { display: block; background: var(--panel); border-radius: 12px; padding: 18px 20px; border-left: 4px solid var(--pink); text-decoration: none; color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.card:hover { color: var(--text); box-shadow: 0 6px 18px rgba(0,0,0,.08); }
.card .tag { font-size: 12px; font-weight: 800; color: var(--pink-dark); text-transform: uppercase; letter-spacing: .5px; }
.card h3 { font-size: 17px; margin: 6px 0; }
.card p { font-size: 14px; color: var(--muted); margin: 0 0 8px; line-height: 1.55; }
.card .more { font-size: 13px; font-weight: 700; color: var(--pink-dark); }
.glist { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.glist a { display: flex; flex-direction: column; background: var(--panel); border-radius: 12px; padding: 16px 20px; text-decoration: none; color: var(--text); border-left: 4px solid var(--pink); }
.glist a:hover { color: var(--text); box-shadow: 0 6px 18px rgba(0,0,0,.08); }
.glist .tag { font-size: 12px; font-weight: 800; color: var(--pink-dark); text-transform: uppercase; }
.glist strong { font-size: 17px; }
.glist em { font-style: normal; color: var(--muted); font-size: 14px; }

.page-head { padding: 32px 0 6px; }
.page-head .container { background: var(--panel); border-radius: 14px; padding: 30px 34px; }
.page-head h1 { font-size: 34px; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--muted); }
.meta { font-size: 13px; color: var(--muted); }

.article-wrap { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 24px; padding-top: 22px; padding-bottom: 46px; }
.article-wrap.single { grid-template-columns: minmax(0, 1fr); }
.sidebar { order: -1; }
.prose { min-width: 0; background: var(--panel); border-radius: 14px; padding: 34px 38px; }
.prose h2 { font-size: 25px; margin-top: 1.6em; scroll-margin-top: 80px; padding-top: 18px; border-top: 1px solid var(--line); }
.prose > h2:first-of-type, .prose > nav + h2 { border-top: 0; padding-top: 0; margin-top: 0; }
.prose h3 { font-size: 19px; margin-top: 1.3em; }
.prose p, .prose li { color: #383844; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .4em; }
.prose table { width: 100%; border-collapse: separate; border-spacing: 0; margin: 1.2em 0; font-size: 14px; display: block; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.prose th, .prose td { padding: 10px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.prose tr:last-child td { border-bottom: 0; }
.prose th { background: var(--bg); font-size: 13px; }
.prose blockquote { margin: 1.4em 0; padding: 14px 18px; background: #fde7f1; border-radius: 10px; color: #5a2a40; }
.note { background: #fff8e6; border-radius: 10px; padding: 14px 18px; font-size: 15px; }

.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin: 2em 0; padding: 20px 24px; border-radius: 12px; background: #22222c; color: #eee; }
.cta-box strong { color: #fff; font-size: 18px; }
.cta-box p { margin: 4px 0 0; font-size: 14px; color: #bbb; }

.toc { background: var(--panel); border-radius: 12px; padding: 16px 18px; font-size: 14px; }
.sidebar .toc { position: sticky; top: 80px; }
.prose .toc { background: var(--bg); margin-bottom: 26px; }
.toc h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); }
.toc ol { margin: 0; padding-left: 1.2em; }
.toc li { margin-bottom: 6px; }
.toc a { color: #383844; text-decoration: none; }
.toc a:hover { color: var(--pink-dark); }

.faq details { background: var(--bg); border-radius: 10px; margin-bottom: 8px; }
.faq summary { cursor: pointer; list-style: none; padding: 13px 16px; font-weight: 700; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q"; display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 10px; border-radius: 6px; background: var(--pink); color: #fff; font-size: 12px; }
.faq details > div { padding: 0 16px 14px 48px; color: #4a4a58; }

.related { padding: 10px 0 46px; }
.related h2 { font-size: 22px; margin-bottom: 14px; }

.site-footer { background: #22222c; color: #a9a9b8; padding: 44px 0 20px; font-size: 14px; }
.site-footer .logo { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 28px; }
.site-footer h4 { color: #fff; font-size: 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 7px; }
.site-footer a { color: #a9a9b8; text-decoration: none; }
.site-footer a:hover { color: var(--pink-2); }
.disclaimer-mini { font-size: 12px; border-top: 1px solid #3a3a48; margin-top: 26px; padding-top: 14px; }
.copyright { font-size: 12px; text-align: center; margin-top: 10px; }

@media (max-width: 920px) {
  .article-wrap { grid-template-columns: 1fr; }
  .sidebar .toc { position: static; }
  .hero-split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .menu-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: var(--pink); padding: 8px 16px 14px; }
  .nav-links.open { display: flex; }
  .hero > .container > .hero-inner, .hero-split, .page-head .container { padding: 24px 20px; }
  .hero h1 { font-size: 30px; }
  .page-head h1 { font-size: 27px; }
  .prose { padding: 22px 18px; }
  .cta-box { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; }
  .btn-lg { width: 100%; }
}