:root {
  --bg: #fff;
  --ink: #111;
  --mute: #6b6b6b;
  --line: #e8e8e8;
  --soft: #f6f6f6;
  --radius: 14px;
  --max: 1080px;
  --pad: 20px;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --display: "IBM Plex Sans Condensed", "IBM Plex Sans", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink); font-family: var(--font); min-height: 100%; }
body { padding-bottom: 40px; }
img, canvas { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: 13px; }
.logo-mark { font-size: 22px; }
.nav-actions { display: flex; gap: 8px; align-items: center; }
.hero { padding: 28px 0 8px; display: grid; gap: 22px; }
.kicker { font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--mute); }
h1 { font-family: var(--display); font-size: clamp(34px, 10vw, 64px); line-height: .92; letter-spacing: -.04em; font-weight: 600; }
.lede { color: var(--mute); max-width: 42ch; line-height: 1.5; margin-top: 10px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 18px; border-radius: 999px; border: 1px solid var(--ink);
  font-size: 13px; letter-spacing: .04em; background: transparent; cursor: pointer;
}
.btn.solid { background: var(--ink); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn:hover { opacity: .85; }
.editor {
  display: grid;
  gap: 32px;
  padding: 12px 0 48px;
}
.card-preview { display: grid; gap: 8px; }
.stage {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--soft);
  overflow: hidden;
  max-width: 500px;
  margin: 0 auto;
}
#card {
  width: 100%;
  height: auto;
  cursor: grab;
  background: #fff;
  display: block;
}
#card:active { cursor: grabbing; }
.stage-hint {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  background: rgba(17,17,17,.75); color: #fff; font-size: 11px;
  padding: 4px 10px; border-radius: 99px; pointer-events: none;
  opacity: .7;
}
.controls { display: grid; gap: 18px; max-width: 480px; }
.field { display: grid; gap: 6px; }
.field label {
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--mute);
}
.field input[type="text"],
.field input[type="url"] {
  height: 40px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; font-size: 14px;
}
.field input[type="range"] { width: 100%; accent-color: var(--ink); }
.field input[type="file"] { font-size: 13px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.note { font-size: 12px; color: var(--mute); line-height: 1.45; margin-top: 4px; }
@media (min-width: 800px) {
  .hero { grid-template-columns: 1fr; padding: 48px 0 24px; }
  .editor { grid-template-columns: 1fr 1fr; align-items: start; gap: 48px; }
  .card-preview { position: sticky; top: 80px; }
  .stage { max-width: none; }
}
.type-btn, .active-btn { height: 36px; padding: 0 14px; font-size: 12px; }
.type-btn.on, .active-btn.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.field-group.hidden { display: none; }
.mute { color: var(--mute); font-weight: 400; letter-spacing: 0; text-transform: none; font-size: 12px; }