:root {
  --bg: #f5efe4;
  --panel: rgba(255, 250, 242, 0.94);
  --line: #d7c4a8;
  --text: #2f2417;
  --muted: #6c604f;
  --primary: #9d4f2d;
  --accent: #d8a94c;
  --danger: #92433b;
  --shadow: 0 16px 40px rgba(70, 45, 16, 0.08);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--text);
  font-family: "Yu Gothic UI", "Hiragino Sans", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(216, 169, 76, 0.35), transparent 24%),
    linear-gradient(135deg, #f8f2e8 0%, #efe3d0 100%);
}
a { color: var(--primary); }
h1, h2, h3 { margin: 0; font-family: Georgia, "Times New Roman", serif; }
pre, .mono { font-family: Consolas, "Courier New", monospace; }

.page { width: min(1120px, calc(100% - 32px)); margin: 24px auto 56px; display: grid; gap: 20px; }
.page.narrow { width: min(640px, calc(100% - 24px)); }
.topbar, .hero, .two-col, .auth-grid, .slider-grid, .results, .nav-links, .feedback, .mode-grid { display: grid; gap: 16px; }
.topbar {
  grid-template-columns: 1fr auto;
  align-items: center;
  background: rgba(255,255,255,.55);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(215, 196, 168, 0.8);
  border-radius: 18px;
  padding: 12px 16px;
  position: sticky;
  top: 12px;
  z-index: 10;
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.nav-links { grid-auto-flow: column; align-items: center; }
.hero { grid-template-columns: 1.2fr .9fr; align-items: stretch; }
.hero.compact { grid-template-columns: 1.2fr .8fr; }
.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.auth-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.hero-copy { align-content: center; }
.auth-panel { align-content: start; }
.eyebrow { margin: 0; color: var(--primary); text-transform: uppercase; letter-spacing: .16em; font-size: 12px; }
.stack { display: grid; gap: 12px; }
.mini-note { margin: 0; color: var(--muted); line-height: 1.7; }
.section-head, .catalog-picker, .slider-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.slider-grid { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.results { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.results.single-column { grid-template-columns: 1fr; }
.mode-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.slider-card, .result-card {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.72);
}
.mode-card {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.72);
  color: var(--text);
  text-decoration: none;
}
.mode-card.active {
  border-color: var(--primary);
  background: rgba(157, 79, 45, 0.08);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  font-weight: 700;
}
.button.secondary { background: var(--accent); color: #34250f; }
.button.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
.button.danger { background: var(--danger); }
.button.wide { width: 100%; }
.notice {
  margin: 0;
  padding: 14px 16px;
  border-radius: 14px;
}
.notice.success { background: #eef6e4; border: 1px solid #b5cea1; }
.notice.error { background: #fce8e6; border: 1px solid #e3aba6; }
.muted { color: var(--muted); }
.field-label {
  display: grid;
  gap: 8px;
  font-weight: 700;
}
.required-label {
  color: var(--primary);
}
.required-input {
  border: 2px solid rgba(157, 79, 45, 0.45);
  background: #fff7f1;
}
input, select, textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
  font: inherit;
}
input[type="range"] {
  min-height: 32px;
  padding: 0;
  accent-color: var(--primary);
}
textarea { min-height: 112px; resize: vertical; }
output {
  min-width: 32px;
  text-align: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(157, 79, 45, 0.1);
  color: var(--primary);
  font-weight: 700;
}
.feedback { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.json-box {
  margin: 0;
  overflow: auto;
  padding: 14px;
  border-radius: 14px;
  background: #f4ebdd;
  border: 1px solid var(--line);
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 840px) {
  .page { width: min(100% - 20px, 1120px); margin-top: 16px; gap: 16px; }
  .hero, .hero.compact, .two-col, .auth-grid, .feedback, .nav-links, .mode-grid { grid-template-columns: 1fr; }
  .topbar { position: static; grid-template-columns: 1fr; }
  .nav-links { grid-auto-flow: row; }
  .panel { padding: 18px; border-radius: 18px; }
  .results { grid-template-columns: 1fr; }
  .section-head { align-items: start; }
}

@media (max-width: 480px) {
  body { background-attachment: fixed; }
  .page { width: min(100% - 16px, 1120px); margin-bottom: calc(24px + env(safe-area-inset-bottom)); }
  .button { min-height: 50px; }
  .slider-grid { grid-template-columns: 1fr; }
}