:root {
  --sf-bg0: #0f1a17;
  --sf-bg1: #1a2e28;
  --sf-bg2: #243f37;
  --sf-ink: #f2f6f4;
  --sf-muted: #a8bdb4;
  --sf-accent: #3dd6c3;
  --sf-accent-2: #e8c47c;
  --sf-line: rgba(242, 246, 244, 0.12);
  --sf-card: rgba(255, 255, 255, 0.04);
  --sf-font: "Manrope", system-ui, sans-serif;
  --sf-display: "Fraunces", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body.sf {
  font-family: var(--sf-font);
  color: var(--sf-ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 214, 195, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(232, 196, 124, 0.12), transparent 50%),
    linear-gradient(165deg, var(--sf-bg0), var(--sf-bg1) 45%, var(--sf-bg2));
  background-attachment: fixed;
}

a { color: var(--sf-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.sf-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
}
.sf-logo {
  font-family: var(--sf-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--sf-ink);
  letter-spacing: -0.02em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.sf-logo:hover { text-decoration: none; opacity: 0.92; }
.sf-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: block;
}
.sf-hero-mark {
  width: 88px;
  height: 88px;
  border-radius: 22px;
  display: block;
  margin: 0 0 1rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.sf-admin-link {
  color: var(--sf-muted);
  font-size: 0.9rem;
}

.sf-hero {
  padding: clamp(2rem, 8vh, 5rem) clamp(1.25rem, 4vw, 3rem) 2.5rem;
  max-width: 48rem;
  animation: sf-rise 0.7s ease-out both;
}
.sf--home {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.sf-hero--solo {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: clamp(1.5rem, 6vh, 4rem);
  padding-bottom: clamp(2rem, 10vh, 5rem);
}
.sf-hero-cta {
  margin: 1.5rem 0 0;
  animation: sf-rise 0.85s 0.15s ease-out both;
}
.sf-hero-brand {
  font-family: var(--sf-display);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
  line-height: 1;
}
.sf-hero-title {
  font-family: var(--sf-display);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 500;
  margin: 0 0 0.75rem;
  color: var(--sf-ink);
  max-width: 22ch;
}
.sf-hero-lede {
  margin: 0;
  color: var(--sf-muted);
  font-size: 1.05rem;
  line-height: 1.55;
  max-width: 40rem;
}

.sf-catalog {
  padding: 0 clamp(1.25rem, 4vw, 3rem) 4rem;
  animation: sf-rise 0.8s 0.12s ease-out both;
}
.sf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.sf-card {
  position: relative;
  display: flex;
  gap: 1rem;
  padding: 1.1rem 1.15rem;
  background: var(--sf-card);
  border: 1px solid var(--sf-line);
  border-radius: 14px;
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.sf-card:hover {
  transform: translateY(-3px);
  border-color: rgba(61, 214, 195, 0.45);
  background: rgba(255, 255, 255, 0.07);
  text-decoration: none;
}
.sf-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(145deg, #2a4a40, #1c322b);
  display: grid;
  place-items: center;
  overflow: hidden;
  flex-shrink: 0;
  font-family: var(--sf-display);
  font-size: 1.35rem;
  color: var(--sf-accent);
}
.sf-card-icon img { width: 100%; height: 100%; object-fit: cover; }
.sf-card-title {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  font-weight: 700;
}
.sf-card-tagline {
  margin: 0;
  color: var(--sf-muted);
  font-size: 0.88rem;
  line-height: 1.4;
}
.sf-card-price {
  margin: 0.45rem 0 0;
  font-size: 0.85rem;
  color: var(--sf-accent-2);
  font-weight: 600;
}
.sf-card-badge {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sf-bg0);
  background: var(--sf-accent-2);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
}

.sf-empty, .sf-muted { color: var(--sf-muted); }
.sf-foot {
  padding: 2rem clamp(1.25rem, 4vw, 3rem) 3rem;
  color: var(--sf-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--sf-line);
}

.sf-detail, .sf-success {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem) 4rem;
  animation: sf-rise 0.55s ease-out both;
}
.sf-back { margin: 0 0 1.5rem; }
.sf-back a { color: var(--sf-muted); }
.sf-detail-hero { margin-bottom: 2.5rem; }
.sf-detail-title {
  font-family: var(--sf-display);
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.sf-detail-tagline {
  font-size: 1.15rem;
  color: var(--sf-accent);
  margin: 0 0 1.25rem;
}
.sf-detail-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.sf-prose {
  line-height: 1.65;
  color: var(--sf-ink);
}
.sf-prose > *:first-child { margin-top: 0; }
.sf-prose > *:last-child { margin-bottom: 0; }
.sf-prose p { margin: 0 0 1rem; }
.sf-prose h1, .sf-prose h2, .sf-prose h3 {
  font-family: var(--sf-display);
  margin: 1.5rem 0 0.75rem;
  letter-spacing: -0.02em;
}
.sf-prose h1 { font-size: 1.5rem; }
.sf-prose h2 { font-size: 1.25rem; }
.sf-prose h3 { font-size: 1.1rem; }
.sf-prose ul, .sf-prose ol { margin: 0 0 1rem; padding-left: 1.35rem; }
.sf-prose li { margin: 0.35rem 0; }
.sf-prose a { color: var(--sf-accent); }
.sf-prose code {
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--sf-line);
}
.sf-prose pre {
  overflow-x: auto;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--sf-line);
  margin: 0 0 1rem;
}
.sf-prose pre code {
  padding: 0;
  border: 0;
  background: transparent;
}
.sf-prose blockquote {
  margin: 0 0 1rem;
  padding-left: 1rem;
  border-left: 3px solid var(--sf-accent);
  color: var(--sf-muted);
}
.sf-demo-cta { margin: 1.25rem 0 0; }

.sf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sf-line);
  background: transparent;
  color: var(--sf-ink);
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
}
.sf-btn:hover { border-color: var(--sf-accent); text-decoration: none; }
.sf-btn--primary {
  background: var(--sf-accent);
  border-color: var(--sf-accent);
  color: #06241f;
}
.sf-btn--small { padding: 0.35rem 0.7rem; font-size: 0.82rem; }
.sf-btn:disabled { opacity: 0.5; cursor: wait; }

.sf-section {
  padding: 1.75rem 0;
  border-top: 1px solid var(--sf-line);
}
.sf-section h2 {
  font-family: var(--sf-display);
  font-size: 1.35rem;
  margin: 0 0 1rem;
}

.sf-video {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  border: 1px solid var(--sf-line);
}
.sf-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.sf-specs {
  display: grid;
  gap: 0.75rem;
  margin: 0;
}
.sf-specs div {
  display: grid;
  grid-template-columns: minmax(7rem, 12rem) 1fr;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--sf-line);
}
.sf-specs dt { color: var(--sf-muted); font-weight: 600; margin: 0; }
.sf-specs dd { margin: 0; }

.sf-sample-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}
.sf-sample-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--sf-line);
}

.sf-pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}
.sf-plan {
  padding: 1.15rem;
  border: 1px solid var(--sf-line);
  border-radius: 12px;
  background: var(--sf-card);
}
.sf-plan h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}
.sf-plan-price {
  font-family: var(--sf-display);
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
  color: var(--sf-accent-2);
}
.sf-plan-desc {
  color: var(--sf-muted);
  font-size: 0.88rem;
  line-height: 1.4;
  margin: 0 0 1rem;
  min-height: 2.8em;
}

.sf-notice {
  margin: 1rem 0 0;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: rgba(232, 196, 124, 0.12);
  color: var(--sf-accent-2);
  font-size: 0.9rem;
}
.sf-success h1 {
  font-family: var(--sf-display);
  font-size: 2rem;
}
.sf-code {
  padding: 0.85rem 1rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--sf-line);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.9rem;
}
.sf-api-key { font-weight: 600; }

@keyframes sf-rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .sf-specs div { grid-template-columns: 1fr; gap: 0.2rem; }
}