:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #53606b;
  --line: #d9e0e5;
  --paper: #ffffff;
  --wash: #f2f5f7;
  --accent: #176b53;
  --accent-dark: #0e4d3b;
  --error: #a32929;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: #e9eef1;
  font: 16px/1.55 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page-shell { width: min(960px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0 64px; }
.hero { max-width: 700px; margin-bottom: 32px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .14em; }
h1, h2 { line-height: 1.1; letter-spacing: -.02em; }
h1 { max-width: 680px; margin: 0 0 16px; font-size: clamp(2.2rem, 7vw, 4.5rem); }
h2 { margin: 0 0 18px; font-size: 1.5rem; }
.lede { max-width: 640px; margin: 0; color: var(--muted); font-size: 1.15rem; }
.card, .preview-section { padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); box-shadow: 0 12px 30px #14232b0d; }
.card { margin-bottom: 28px; }
form { display: grid; gap: 10px; }
label { font-weight: 700; }
input[type="date"], input[type="file"], input[type="url"], textarea { width: 100%; padding: 11px 12px; border: 1px solid #aebbc4; border-radius: 9px; color: var(--ink); background: #fff; font: inherit; }
input[type="checkbox"] { width: 18px; height: 18px; margin: 0 8px 0 0; accent-color: var(--accent); vertical-align: -3px; }
textarea { resize: vertical; }
.help { margin: -5px 0 9px; color: var(--muted); font-size: .9rem; }
code { padding: 2px 5px; border-radius: 5px; background: var(--wash); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .9em; }
details { margin: 4px 0 2px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; }
summary { cursor: pointer; font-weight: 700; }
details label { display: block; margin-top: 14px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
button { padding: 12px 18px; border: 0; border-radius: 9px; color: #fff; background: var(--accent); cursor: pointer; font: inherit; font-weight: 800; }
button:hover { background: var(--accent-dark); }
button:disabled { cursor: not-allowed; opacity: .45; }
button.secondary { color: var(--accent-dark); border: 1px solid var(--accent); background: #fff; }
.status { min-height: 1.6em; margin: 2px 0 0; color: var(--muted); }
.status.success { color: var(--accent-dark); }
.status.error { color: var(--error); font-weight: 700; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.section-heading h2 { margin-bottom: 0; }
.badge { padding: 5px 9px; border-radius: 99px; color: var(--accent-dark); background: #e5f3ed; font-size: .8rem; white-space: nowrap; }
.preview-frame { display: flex; min-height: 420px; align-items: center; justify-content: center; overflow: auto; padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: #dfe6e9; }
.preview-frame svg { display: block; width: min(480px, 100%); height: auto; background: #fff; box-shadow: 0 10px 25px #17202a30; }
.next-steps { margin-top: 28px; }
.text-link { color: var(--accent-dark); font-weight: 800; }
footer { padding-top: 28px; color: var(--muted); font-size: .9rem; }
footer a { color: inherit; }
.guide { max-width: 840px; }
.guide > h1 { margin-bottom: 16px; }
.guide .card { margin-top: 22px; margin-bottom: 0; }
.guide h2 { margin-bottom: 12px; }
.guide p:last-child { margin-bottom: 0; }
.guide li + li { margin-top: 7px; }
.guide details + details { margin-top: 10px; }
.guide details p { margin: 12px 0 0; }
.guide pre { overflow-x: auto; padding: 14px 16px; border-radius: 9px; color: #e7eef1; background: #17202a; }
.guide pre code { padding: 0; color: inherit; background: transparent; }
@media (max-width: 640px) {
  .page-shell { width: min(100% - 20px, 960px); padding-top: 28px; }
  .card, .preview-section { padding: 20px; border-radius: 14px; }
  .section-heading { align-items: start; flex-direction: column; gap: 10px; }
  .preview-frame { padding: 12px; }
}