:root {
  color-scheme: light;
  --bg: #f4eee6;
  --paper: #fffaf3;
  --ink: #201b17;
  --sub: #756b61;
  --line: rgba(32, 27, 23, .12);
  --line-strong: rgba(32, 27, 23, .24);
  --accent: #d96f2c;
  --accent-dark: #b85a20;
  --danger: #a83d35;
  --radius-lg: 28px;
  --radius-md: 18px;
  --shadow: 0 18px 60px rgba(32, 27, 23, .12);
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", system-ui, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(255,255,255,.72), transparent 28rem),
    linear-gradient(160deg, #f7f1e9 0%, var(--bg) 52%, #eee2d6 100%);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button, input { font: inherit; }
button, label.file-btn { -webkit-tap-highlight-color: transparent; }
.app-shell {
  width: min(100%, 620px);
  min-height: 100svh;
  margin: 0 auto;
  padding: calc(18px + env(safe-area-inset-top)) 18px calc(28px + env(safe-area-inset-bottom));
}
.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 2px 26px;
}
.eyebrow {
  margin: 0 0 4px;
  color: var(--sub);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .14em;
}
h1 {
  margin: 0;
  font-size: clamp(36px, 11vw, 68px);
  line-height: .86;
  letter-spacing: -.06em;
}
.hero, .editor {
  background: rgba(255, 250, 243, .72);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 22px;
  backdrop-filter: blur(18px);
}
.hidden { display: none !important; }
.copy-block { padding: 30px 2px 24px; }
.tagline {
  margin: 0;
  font-size: clamp(30px, 8vw, 48px);
  line-height: 1.06;
  letter-spacing: -.055em;
  font-weight: 750;
}
.lead {
  margin: 18px 0 0;
  color: var(--sub);
  font-size: 15px;
  line-height: 1.75;
}
.notice {
  margin: 18px 0 0;
  color: var(--sub);
  font-size: 12px;
  line-height: 1.55;
}
.actions { margin-top: 18px; }
.stack { display: grid; gap: 12px; }
.grid-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
button, .file-btn {
  border: 0;
  border-radius: 999px;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: 800;
  letter-spacing: -.02em;
}
.primary-btn {
  color: #fff;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  box-shadow: 0 10px 26px rgba(217, 111, 44, .24);
}
.secondary-btn {
  color: var(--ink);
  background: rgba(255,255,255,.62);
  border: 1px solid var(--line-strong);
}
.ghost-btn {
  color: var(--ink);
  background: rgba(255,255,255,.44);
  border: 1px solid var(--line);
}
.small {
  min-height: 40px;
  padding: 0 14px;
  font-size: 12px;
}
.editor { padding: 14px; }
.image-card {
  overflow: hidden;
  border-radius: 24px;
  background: #111;
  border: 1px solid rgba(0,0,0,.08);
}
.compare-stage {
  position: relative;
  aspect-ratio: 4 / 5;
  width: 100%;
  overflow: hidden;
  touch-action: none;
  background: #111;
}
.compare-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  pointer-events: none;
}
.compare-img.after {
  clip-path: inset(0 0 0 var(--split));
}
.split-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split);
  width: 2px;
  transform: translateX(-1px);
  background: rgba(255,255,255,.88);
  box-shadow: 0 0 20px rgba(0,0,0,.28);
}
.label {
  position: absolute;
  top: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.78);
  color: #111;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .02em;
}
.before-label { left: 12px; }
.after-label { right: 12px; }
.compare-control { padding: 14px 4px 8px; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.mode-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 10px 0;
}
.mode-btn {
  min-height: 44px;
  background: rgba(255,255,255,.64);
  color: var(--ink);
  border: 1px solid var(--line);
  font-size: 13px;
}
.mode-btn.active {
  background: var(--ink);
  color: #fff;
}
.control-card {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255,255,255,.54);
  border: 1px solid var(--line);
}
.control-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}
.eye-head { margin-top: 14px; }
.mode-description {
  margin: 12px 0 0;
  color: var(--sub);
  font-size: 12px;
  line-height: 1.55;
}
.status {
  margin: 14px 2px 0;
  min-height: 36px;
  color: var(--sub);
  font-size: 12px;
  line-height: 1.5;
}
.status.error { color: var(--danger); }
.is-busy { opacity: .68; pointer-events: none; }
@media (max-width: 420px) {
  .app-shell { padding-left: 12px; padding-right: 12px; }
  .hero, .editor { border-radius: 24px; }
  .grid-actions { grid-template-columns: 1fr; }
}


/* v20 clean public top */
.topbar { display: none !important; }
.app-shell {
  width: min(100%, 640px);
  padding-top: calc(24px + env(safe-area-inset-top));
}
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 9vw, 58px) clamp(22px, 7vw, 44px);
  border-radius: 34px;
  background:
    radial-gradient(circle at 22% 12%, rgba(255,255,255,.92), rgba(255,255,255,0) 34%),
    linear-gradient(145deg, rgba(255,250,243,.88), rgba(245,232,218,.72));
  border: 1px solid rgba(32,27,23,.10);
  box-shadow: 0 22px 70px rgba(32,27,23,.12);
  backdrop-filter: blur(18px);
}
.hero-inner { text-align: left; }
.hero-kicker {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
}
.hero h1 {
  margin: 0;
  font-size: clamp(42px, 13vw, 78px);
  line-height: .84;
  letter-spacing: -.075em;
}
.hero .lead {
  margin-top: 20px;
  max-width: 22em;
  color: var(--sub);
  font-size: 15px;
  line-height: 1.75;
}
.hero-actions {
  margin-top: 34px;
  gap: 12px;
}
.file-btn,
.primary-btn,
.secondary-btn {
  border-radius: 999px;
}
.file-btn input { display: none; }
.status { text-align: center; }
@media (max-width: 420px) {
  .hero { border-radius: 30px; }
  .hero h1 { font-size: clamp(40px, 16vw, 68px); }
}