:root {
  --ink: #1c2420;
  --muted: #5e675f;
  --paper: #f6f1e8;
  --sheet: #fbf8f3;
  --line: #ddd4c6;
  --rail: #1e2622;
  --rail-text: #f3efe6;
  --rail-muted: #b7c0b4;
  --copper: #a15b32;
  --lacquer: #8c2f24;
  --good: #1f6b45;
  --warn: #8a5a12;
  --shadow: 0 18px 50px rgba(48, 38, 22, 0.08);
  --serif: "Songti SC", "Noto Serif SC", "STSong", "PMingLiU", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Source Code Pro", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: var(--sans);
  text-wrap: pretty;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.45), transparent 280px),
    var(--paper);
}

button, input { font: inherit; }

button { cursor: pointer; }

.hidden { display: none !important; }

.gate {
  width: min(420px, 100%);
  margin-top: 8px;
}

.panel-head h2 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.quiet, .panel-head p, .rail-foot {
  color: var(--muted);
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
}

input[type="text"] {
  width: 100%;
  border: 1px solid #cfc4b2;
  background: #fff;
  color: var(--ink);
  padding: 12px 14px;
  outline: none;
}

input[type="text"]:focus {
  border-color: var(--copper);
  box-shadow: 0 0 0 3px rgba(161, 91, 50, 0.15);
}

.gate button,
.search-row button,
.text-button {
  border: 0;
}

.gate button,
.search-row button {
  background: var(--rail);
  color: var(--rail-text);
  padding: 12px 18px;
}

.gate button {
  min-width: 120px;
  margin-top: 4px;
}

.gate button:hover,
.search-row button:hover,
.tab:hover { background: #2a3530; }

.form-error {
  min-height: 1.4em;
  margin: 8px 0;
  color: var(--lacquer);
  font-size: 14px;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 240px 1fr;
}

.rail {
  background: var(--rail);
  color: var(--rail-text);
  display: flex;
  flex-direction: column;
  padding: 28px 18px 20px;
}

.tabs {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tab {
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--rail-text);
  padding: 12px 12px 12px 14px;
  border-left: 3px solid transparent;
}

.tab.is-active {
  background: rgba(243, 239, 230, 0.08);
  border-left-color: #e0a36a;
}

.rail-foot {
  margin-top: auto;
  padding: 18px 8px 0;
  color: var(--rail-muted);
  font-size: 13px;
  line-height: 1.6;
}

.rail-foot p { margin: 0; }

.text-button {
  margin-top: 8px;
  padding: 0;
  background: transparent;
  color: #e0a36a;
}

main { padding: 36px 40px 64px; }

.panel { max-width: 880px; }

.panel-head h2 { margin: 0; font-size: 36px; }

.panel-head p { max-width: 62ch; line-height: 1.7; }

.search-form { margin: 8px 0 22px; }

.search-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

#query { font-family: var(--mono); font-size: 16px; }

.result-slot { min-height: 120px; }

.slip {
  background: var(--sheet);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 22px 24px 18px;
}

.slip-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.stamp {
  border: 1px solid var(--good);
  color: var(--good);
  padding: 4px 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.stamp.is-fuzzy { border-color: var(--warn); color: var(--warn); }

.score { color: var(--muted); font-size: 13px; }

.model-name {
  margin: 18px 0 8px;
  font-family: var(--mono);
  font-size: 22px;
  line-height: 1.45;
  word-break: break-word;
}

.figures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}

.figures span, .meta, .alt-row span {
  font-size: 14px;
}

.figures small, .meta {
  display: block;
  color: var(--muted);
  margin-bottom: 4px;
}

.order-no, .alt-row strong {
  font-family: var(--mono);
}

.price {
  margin: 0;
  color: var(--lacquer);
  font-family: var(--serif);
  font-size: 40px;
  line-height: 1;
}

.note, .caution {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.caution { color: var(--warn); }

.extra { margin-top: 16px; padding-top: 12px; border-top: 1px dashed var(--line); }

.extra h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
}

.alt-row, .other-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: baseline;
  padding: 7px 0;
  border-bottom: 1px solid #efe7db;
  font-size: 14px;
}

.other-row { grid-template-columns: 1fr auto; }

.linkish {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font-family: var(--mono);
  text-align: left;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.soon {
  margin-top: 12px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.soon p { margin: 0 0 6px; font-size: 18px; }

button:disabled { opacity: 0.6; cursor: wait; }

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .rail { padding: 16px; }
  .tabs { flex-direction: row; overflow-x: auto; }
  .tab { border-left: 0; border-bottom: 3px solid transparent; white-space: nowrap; }
  .tab.is-active { border-left-color: transparent; border-bottom-color: #e0a36a; }
  .rail-foot { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
  main { padding: 22px 16px 48px; }
  .panel-head h2 { font-size: 30px; }
  .search-row, .figures, .alt-row { grid-template-columns: 1fr; }
  .price { font-size: 34px; }
}