:root {
  --bg: #0c1116;
  --bg-elev: #151c24;
  --ink: #eef3f7;
  --muted: #8d9aab;
  --accent: #3d9a78;
  --accent-ink: #04140f;
  --line: #273141;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --display: "Fraunces", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.landing {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.lp-atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(61, 154, 120, 0.22), transparent 55%),
    radial-gradient(700px 420px at 92% 8%, rgba(180, 120, 48, 0.14), transparent 50%),
    linear-gradient(180deg, #101820 0%, var(--bg) 42%, #0a0e12 100%);
  animation: lp-drift 18s ease-in-out infinite alternate;
}
@keyframes lp-drift {
  from { filter: hue-rotate(0deg) saturate(1); }
  to { filter: hue-rotate(12deg) saturate(1.08); }
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}

.lp-nav {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  width: 100%; max-width: 1180px; margin: 0 auto; padding: 1.1rem 1.25rem;
  box-sizing: border-box;
}
.lp-brand {
  font-size: 1.2rem; font-weight: 700; color: var(--ink);
  text-decoration: none; letter-spacing: -0.02em;
}
.lp-brand span, .lp-brand-mark span { color: var(--accent); }
.lp-nav-links { display: flex; align-items: center; gap: 1rem; }
.lp-nav-links a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.lp-nav-links a:hover { color: var(--ink); }
.lp-nav-cta {
  background: var(--accent) !important; color: var(--accent-ink) !important;
  padding: 0.45rem 0.85rem; border-radius: 8px; font-weight: 600;
}

.lp-hero, .lp-sandbox, .lp-api {
  max-width: 1180px; margin: 0 auto; padding: 1.5rem 1.25rem 1.25rem;
  animation: lp-rise 0.7s ease-out both;
}
@keyframes lp-rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

.lp-brand-mark {
  margin: 0 0 0.35rem; font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700; letter-spacing: -0.03em; line-height: 1.05;
}
.lp-hero h1, .lp-api h2 {
  margin: 0 0 0.65rem; font-family: var(--display); font-weight: 500;
  font-size: clamp(1.6rem, 3.5vw, 2.35rem); letter-spacing: -0.02em; color: #c5d0da;
}
.lp-support { max-width: 40rem; margin: 0 0 1.25rem; color: var(--muted); font-size: 1.05rem; }
.lp-support code, .lp-sandbox-head code { font-family: var(--mono); font-size: 0.85em; color: #b7dccb; }
.lp-cta-row { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-bottom: 0.5rem; }

.lp-btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px;
  padding: 0.7rem 1.1rem; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}
.lp-btn:hover { filter: brightness(1.06); text-decoration: none; transform: translateY(-1px); }
.lp-btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.lp-btn.compact { padding: 0.4rem 0.8rem; font-size: 0.9rem; }
.lp-btn:disabled { opacity: 0.55; cursor: wait; transform: none; }

.lp-sandbox { padding-bottom: 2rem; animation-delay: 0.12s; }
.lp-sandbox-head h2 { margin: 0 0 0.25rem; font-size: 1.15rem; }
.lp-sandbox-head p { margin: 0 0 1rem; color: var(--muted); font-size: 0.95rem; }

.lp-sandbox-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem;
  min-height: min(62vh, 640px); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
@media (max-width: 860px) {
  .lp-sandbox-grid { grid-template-columns: 1fr; min-height: auto; }
}

.lp-editor-col, .lp-preview-col { display: flex; flex-direction: column; min-height: 420px; }
.lp-editor-col { border-right: 1px solid var(--line); }
@media (max-width: 860px) { .lp-editor-col { border-right: 0; border-bottom: 1px solid var(--line); } }

.lp-tabs { display: flex; border-bottom: 1px solid var(--line); background: rgba(0, 0, 0, 0.2); }
.lp-tab {
  flex: 1; background: transparent; border: 0; border-bottom: 2px solid transparent;
  color: var(--muted); font: inherit; font-weight: 600; padding: 0.75rem 1rem; cursor: pointer;
}
.lp-tab.is-active { color: var(--ink); border-bottom-color: var(--accent); background: rgba(61, 154, 120, 0.08); }

.lp-code {
  flex: 1; width: 100%; min-height: 360px; margin: 0; padding: 1rem; border: 0; resize: none;
  background: transparent; color: #d7e2ec; font-family: var(--mono); font-size: 0.82rem; line-height: 1.45; outline: none;
}
.lp-code.is-hidden { display: none; }
.lp-error {
  margin: 0; padding: 0.55rem 1rem; background: #3a1a1a; color: #f0b4b4;
  font-size: 0.85rem; border-top: 1px solid #6a3030;
}

.lp-preview-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
  padding: 0.65rem 0.85rem; border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2); color: var(--muted); font-size: 0.9rem; font-weight: 600;
}
.lp-preview-frame-wrap { flex: 1; background: #f4f1ea; min-height: 360px; }
#sandbox-preview {
  width: 100%; height: 100%; min-height: 360px; border: 0; background: #fff;
  transition: opacity 0.25s ease;
}
#sandbox-preview.is-updating { opacity: 0.45; }

.lp-api { padding-bottom: 3rem; }
.lp-guide-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  max-width: 42rem;
}
.lp-guide-list li {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
}
.lp-guide-list a {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}
.lp-guide-list a:hover { color: #b7dccb; }
.lp-guide-list span {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}
.lp-pre {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.1rem 1.25rem; overflow: auto; font-family: var(--mono); font-size: 0.82rem;
  color: #c5d4e0; line-height: 1.5;
}

.lp-pdf-host {
  position: fixed; left: -10000px; top: 0; width: 794px;
  background: #fff; color: #111; pointer-events: none;
}

.site-footer {
  width: 100%;
  border-top: 1px solid var(--line);
  margin-top: auto;
  padding: 1.25rem 0 2rem;
}
.site-footer-inner {
  width: 100%;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 1.25rem;
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.site-footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.site-footer-links a:hover { color: var(--ink); }

.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 50;
  max-width: 720px;
  margin: 0 auto;
}
.cookie-banner-inner {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 1rem 1.1rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}
.cookie-banner-title {
  margin: 0 0 0.25rem;
  font-weight: 600;
  font-size: 0.95rem;
}
.cookie-banner-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  max-width: 36rem;
}
.cookie-banner-desc a { color: #b7dccb; }

.legal-doc {
  max-width: 42rem;
  padding-bottom: 2rem;
}
.legal-doc h1 { margin-bottom: 0.35rem; }
.legal-doc h2 {
  margin: 1.75rem 0 0.55rem;
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.25rem;
}
.legal-doc p, .legal-doc li { color: #c5d0da; }
.legal-doc ul { padding-left: 1.2rem; }
.legal-doc a { color: #b7dccb; }
.legal-doc .table { margin: 1rem 0; font-size: 0.9rem; }

.consent-check {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 1rem;
  cursor: pointer;
}
.consent-check input {
  margin-top: 0.2rem;
  flex-shrink: 0;
}
.consent-check a { color: #b7dccb; }

.flash {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--line);
}
.flash.ok { background: #143028; color: #b6e6d2; }
.flash.err { background: #3a1a1a; color: #f0b4b4; }