:root {
  --sf-bg: #fbfaf7;
  --sf-surface: #ffffff;
  --sf-ink: #161325;
  --sf-ink-soft: #5b5670;
  --sf-line: #ece7df;
  --sf-accent: #ff5a3c;
  --sf-accent-soft: #ffe4dd;
  --sf-violet: #5b3df5;
  --sf-violet-soft: #ece6ff;
  --sf-amber: #f8b500;
  --sf-mint: #15c39a;
  --sf-radius: 14px;
  --sf-radius-lg: 22px;
  --sf-shadow: 0 1px 0 rgba(22,19,37,0.04), 0 8px 24px -16px rgba(22,19,37,0.18);
  --sf-shadow-lg: 0 24px 60px -28px rgba(22,19,37,0.35);
  --sf-font: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --sf-font-display: "Fraunces", "Georgia", serif;
  --sf-font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sf-font);
  color: var(--sf-ink);
  background: var(--sf-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--sf-violet); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.sf-container { max-width: 1180px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Header ---------- */
.sf-topbar {
  background: var(--sf-ink);
  color: #fff;
  font-size: 0.82rem;
  padding: 0.45rem 0;
  letter-spacing: 0.02em;
}
.sf-topbar a { color: #ffd0c5; }
.sf-header {
  background: var(--sf-surface);
  border-bottom: 1px solid var(--sf-line);
  padding: 1rem 0;
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(8px);
}
.sf-header-inner {
  display: flex; align-items: center; gap: 1.5rem;
}
.sf-logo {
  font-family: var(--sf-font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--sf-ink);
  display: flex; align-items: center; gap: 0.6rem;
}
.sf-logo-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--sf-accent), var(--sf-violet));
  display: grid; place-items: center;
  color: #fff; font-family: var(--sf-font-mono); font-weight: 700;
  box-shadow: var(--sf-shadow);
}
.sf-nav { display: flex; gap: 1.25rem; margin-left: auto; }
.sf-nav a { color: var(--sf-ink); font-weight: 500; font-size: 0.95rem; }
.sf-nav a:hover { color: var(--sf-accent); text-decoration: none; }
.sf-search {
  display: flex; gap: 0.5rem;
  background: var(--sf-bg);
  border: 1px solid var(--sf-line);
  border-radius: 999px;
  padding: 0.4rem 0.5rem 0.4rem 1rem;
}
.sf-search input { border: none; background: transparent; outline: none; min-width: 200px; font-size: 0.9rem; color: var(--sf-ink); }
.sf-search button {
  background: var(--sf-ink); color: #fff;
  border: none; border-radius: 999px;
  padding: 0.4rem 0.95rem; cursor: pointer; font-weight: 600;
}

/* ---------- Hero ---------- */
.sf-hero {
  position: relative; overflow: hidden;
  background: radial-gradient(120% 120% at 0% 0%, #fff3ef 0%, transparent 55%),
              radial-gradient(120% 120% at 100% 100%, #ece6ff 0%, transparent 55%),
              var(--sf-bg);
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--sf-line);
}
.sf-hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3rem; align-items: center; }
.sf-hero h1 { font-family: var(--sf-font-display); font-size: clamp(2.4rem, 4.5vw, 3.6rem); line-height: 1.05; margin: 0 0 1rem; letter-spacing: -0.02em; }
.sf-hero h1 em { font-style: italic; color: var(--sf-accent); }
.sf-hero p.lead { font-size: 1.15rem; color: var(--sf-ink-soft); max-width: 38rem; margin: 0 0 1.5rem; }
.sf-hero-pill {
  display: inline-flex; gap: 0.5rem; align-items: center;
  background: var(--sf-violet-soft); color: var(--sf-violet);
  padding: 0.35rem 0.8rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600;
  margin-bottom: 1rem;
}
.sf-hero-cta { display: flex; gap: 0.85rem; flex-wrap: wrap; }
.sf-btn-primary, .sf-btn-ghost {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.4rem; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
  text-decoration: none; border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.sf-btn-primary { background: var(--sf-accent); color: #fff; box-shadow: var(--sf-shadow); }
.sf-btn-primary:hover { transform: translateY(-2px); box-shadow: var(--sf-shadow-lg); text-decoration: none; }
.sf-btn-ghost { background: var(--sf-surface); color: var(--sf-ink); border-color: var(--sf-line); }
.sf-btn-ghost:hover { border-color: var(--sf-ink); text-decoration: none; }

.sf-hero-art { position: relative; }
.sf-hero-art img { border-radius: var(--sf-radius-lg); box-shadow: var(--sf-shadow-lg); }
.sf-hero-stats { display: flex; gap: 2rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px dashed var(--sf-line); }
.sf-hero-stats div b { font-family: var(--sf-font-display); font-size: 1.6rem; display: block; color: var(--sf-ink); }
.sf-hero-stats div span { font-size: 0.85rem; color: var(--sf-ink-soft); }

/* ---------- Sections ---------- */
section.sf-section { padding: 3.5rem 0; }
.sf-section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.75rem; }
.sf-section-head h2 { font-family: var(--sf-font-display); font-size: clamp(1.6rem, 3vw, 2.25rem); margin: 0; letter-spacing: -0.01em; }
.sf-section-head p { color: var(--sf-ink-soft); margin: 0.25rem 0 0; }
.sf-section-head a { font-weight: 600; }

/* ---------- Cards / Grid ---------- */
.sf-grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.sf-card {
  background: var(--sf-surface);
  border: 1px solid var(--sf-line);
  border-radius: var(--sf-radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  text-decoration: none; color: inherit;
}
.sf-card:hover { transform: translateY(-4px); box-shadow: var(--sf-shadow-lg); border-color: #d6cfc1; text-decoration: none; }
.sf-card-thumb {
  height: 160px;
  background: linear-gradient(135deg, var(--sf-violet-soft), var(--sf-accent-soft));
  position: relative;
  display: grid; place-items: center;
  font-family: var(--sf-font-mono); font-size: 0.85rem; color: var(--sf-violet);
  overflow: hidden;
}
.sf-card-thumb .sf-thumb-tag {
  position: absolute; top: 0.75rem; left: 0.75rem;
  background: rgba(22,19,37,0.85); color: #fff;
  padding: 0.2rem 0.55rem; border-radius: 6px; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
}
.sf-card-thumb .sf-thumb-stars {
  position: absolute; top: 0.75rem; right: 0.75rem;
  background: #fff; color: var(--sf-ink);
  padding: 0.2rem 0.5rem; border-radius: 999px; font-size: 0.72rem; font-weight: 600;
  display: flex; align-items: center; gap: 0.25rem;
  box-shadow: var(--sf-shadow);
}
.sf-card-body { padding: 1.1rem 1.2rem 1.3rem; flex: 1; display: flex; flex-direction: column; }
.sf-card-body h3 { font-size: 1.05rem; margin: 0 0 0.4rem; line-height: 1.25; }
.sf-card-body p { color: var(--sf-ink-soft); font-size: 0.9rem; margin: 0 0 1rem; flex: 1; }
.sf-card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--sf-ink-soft); }
.sf-card-meta .sf-view {
  background: var(--sf-ink); color: #fff;
  padding: 0.4rem 0.85rem; border-radius: 8px; font-weight: 600; font-size: 0.78rem; letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- Categories Strip ---------- */
.sf-cats { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.sf-cat {
  display: flex; flex-direction: column; gap: 0.4rem;
  padding: 1.1rem 1.2rem; border-radius: var(--sf-radius);
  background: var(--sf-surface); border: 1px solid var(--sf-line);
  text-decoration: none; color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.sf-cat:hover { transform: translateY(-3px); border-color: var(--sf-accent); text-decoration: none; }
.sf-cat b { font-family: var(--sf-font-display); font-size: 1.2rem; }
.sf-cat span { color: var(--sf-ink-soft); font-size: 0.85rem; }
.sf-cat .sf-cat-count { font-size: 0.75rem; color: var(--sf-violet); font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }

/* ---------- Page layout with sidebar ---------- */
.sf-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 3rem; align-items: start; }
.sf-sidebar { display: flex; flex-direction: column; gap: 1.5rem; position: sticky; top: 90px; }
.sf-side-card {
  background: var(--sf-surface); border: 1px solid var(--sf-line);
  border-radius: var(--sf-radius); padding: 1.25rem 1.35rem;
}
.sf-side-card h4 { margin: 0 0 0.85rem; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sf-ink-soft); }
.sf-side-card ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.55rem; }
.sf-side-card a { color: var(--sf-ink); font-size: 0.93rem; }
.sf-side-card a:hover { color: var(--sf-accent); }

/* ---------- Detail page ---------- */
.sf-breadcrumb { font-size: 0.82rem; color: var(--sf-ink-soft); margin: 1.5rem 0 0.5rem; }
.sf-breadcrumb a { color: var(--sf-ink-soft); }
.sf-breadcrumb a:hover { color: var(--sf-accent); }
.sf-detail-header { padding: 2rem 0 1rem; }
.sf-detail-header h1 { font-family: var(--sf-font-display); font-size: clamp(2rem, 3.5vw, 2.8rem); margin: 0 0 0.6rem; letter-spacing: -0.01em; }
.sf-detail-meta { color: var(--sf-ink-soft); font-size: 0.92rem; display: flex; flex-wrap: wrap; gap: 1.25rem; }
.sf-detail-meta b { color: var(--sf-ink); font-weight: 600; }
.sf-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.sf-tag { background: var(--sf-violet-soft); color: var(--sf-violet); padding: 0.25rem 0.7rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }

.sf-detail-hero {
  background: linear-gradient(135deg, var(--sf-accent-soft), var(--sf-violet-soft));
  border-radius: var(--sf-radius-lg);
  padding: 2.5rem;
  margin: 1.5rem 0;
  display: grid; gap: 1rem;
  font-family: var(--sf-font-mono); font-size: 0.85rem; color: var(--sf-ink);
}

.sf-prose { font-size: 1.02rem; color: #2c2540; }
.sf-prose p { margin: 0 0 1.05rem; }
.sf-prose h2, .sf-prose h3 { font-family: var(--sf-font-display); margin-top: 2rem; }

.sf-code-block {
  background: #161325; color: #f4f0e8;
  padding: 1.25rem 1.5rem; border-radius: var(--sf-radius);
  overflow-x: auto; font-family: var(--sf-font-mono); font-size: 0.85rem;
  line-height: 1.55; white-space: pre;
}
.sf-code-tabs { display: flex; gap: 0.5rem; margin-top: 1.5rem; margin-bottom: 0.5rem; }
.sf-code-tab { background: var(--sf-ink); color: #fff; padding: 0.35rem 0.8rem; border-radius: 8px 8px 0 0; font-size: 0.78rem; font-family: var(--sf-font-mono); }

.sf-cta-card {
  background: var(--sf-ink); color: #fff;
  border-radius: var(--sf-radius-lg);
  padding: 2rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
  margin: 2rem 0;
}
.sf-cta-card h3 { font-family: var(--sf-font-display); margin: 0 0 0.4rem; font-size: 1.4rem; }
.sf-cta-card p { margin: 0; color: #c4bdd6; }
.sf-cta-card .sf-btn-primary { background: var(--sf-accent); }

/* ---------- AdSense ---------- */
.sf-ad {
  background: repeating-linear-gradient(45deg, #f5f0e8, #f5f0e8 10px, #ece6db 10px, #ece6db 20px);
  border: 1px dashed #c9c0ad;
  color: #8a7f63;
  text-align: center;
  font-family: var(--sf-font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 1.5rem;
  border-radius: var(--sf-radius);
  margin: 2rem 0;
}
.sf-ad-sidebar { padding: 3rem 1rem; }

/* ---------- Pagination ---------- */
.sf-pagination { display: flex; gap: 0.5rem; justify-content: center; margin: 3rem 0 1rem; flex-wrap: wrap; }
.sf-pagination a, .sf-pagination span {
  padding: 0.55rem 0.95rem; border-radius: 10px;
  background: var(--sf-surface); border: 1px solid var(--sf-line);
  color: var(--sf-ink); font-weight: 600; font-size: 0.9rem;
}
.sf-pagination a.is-current, .sf-pagination span.is-current { background: var(--sf-ink); color: #fff; border-color: var(--sf-ink); }
.sf-pagination a:hover { border-color: var(--sf-accent); color: var(--sf-accent); text-decoration: none; }

/* ---------- Footer ---------- */
.sf-footer { background: var(--sf-ink); color: #d2cce3; padding: 3.5rem 0 1.5rem; margin-top: 4rem; }
.sf-footer h5 { color: #fff; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 1rem; }
.sf-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; }
.sf-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.55rem; }
.sf-footer a { color: #d2cce3; font-size: 0.9rem; }
.sf-footer a:hover { color: #fff; }
.sf-footer p { color: #8a829e; font-size: 0.88rem; }
.sf-footer-bottom { border-top: 1px solid #2a2342; margin-top: 2.5rem; padding-top: 1.25rem; display: flex; justify-content: space-between; flex-wrap: wrap; font-size: 0.82rem; color: #8a829e; }

/* ---------- Static pages ---------- */
.sf-static { background: var(--sf-surface); border: 1px solid var(--sf-line); border-radius: var(--sf-radius-lg); padding: 3rem; margin: 2rem 0; }
.sf-static h1 { font-family: var(--sf-font-display); margin: 0 0 0.5rem; font-size: 2.3rem; letter-spacing: -0.01em; }
.sf-static .lede { color: var(--sf-ink-soft); font-size: 1.05rem; margin-bottom: 2rem; }
.sf-static h2 { font-family: var(--sf-font-display); margin-top: 2.25rem; font-size: 1.45rem; }

.sf-form-static { display: grid; gap: 1rem; max-width: 520px; }
.sf-form-static label { display: grid; gap: 0.35rem; font-weight: 600; font-size: 0.9rem; color: var(--sf-ink); }
.sf-form-static input, .sf-form-static textarea {
  border: 1px solid var(--sf-line); border-radius: 10px; padding: 0.7rem 0.9rem; font-size: 0.95rem; font-family: inherit;
  background: var(--sf-bg);
}
.sf-form-static button { justify-self: start; }

@media (max-width: 900px) {
  .sf-hero-grid { grid-template-columns: 1fr; }
  .sf-layout { grid-template-columns: 1fr; }
  .sf-sidebar { position: static; }
  .sf-footer-grid { grid-template-columns: 1fr 1fr; }
  .sf-search { display: none; }
}
@media (max-width: 560px) {
  .sf-footer-grid { grid-template-columns: 1fr; }
  .sf-nav { display: none; }
}