* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #E8862E;
  --primary-dark: #C96F1D;
  --primary-tint: rgba(232, 134, 46, .12);
  --danger: #d9534f;
  --text: #3D2E1E;
  --muted: #8a7a68;
  --border: #eadfcd;
  --bg: #FAF5EC;
  --card: #ffffff;
  --shadow: 0 2px 12px rgba(61, 46, 30, .06);
}

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

.view {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hidden { display: none !important; }

h1 { font-size: 1.35rem; font-weight: 800; }
h2 { font-size: 1.1rem; margin-bottom: 10px; font-weight: 700; }
h3 { font-size: .95rem; margin: 14px 0 8px; font-weight: 700; }

.muted { color: var(--muted); }
.small { font-size: .82rem; }
.error { color: var(--danger); font-size: .85rem; min-height: 1.2em; margin-top: 6px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.card.narrow { max-width: 420px; margin: 0 auto; text-align: center; width: 100%; }
.card.narrow form { margin-top: 14px; }

/* 品牌落地页 */
.hero { text-align: center; padding: 36px 8px 8px; }
.hero-title { font-size: 1.7rem; line-height: 1.35; font-weight: 800; letter-spacing: .02em; }
.hero-sub { color: var(--muted); margin-top: 10px; font-size: .95rem; }

.steps { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; }
.step { margin: 0; text-align: center; }
.step img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: block;
}
.step figcaption { font-size: .82rem; color: var(--muted); margin-top: 6px; }
.step-arrow { color: var(--primary); font-size: 1.3rem; font-weight: 700; }
.footer-line { text-align: center; color: var(--muted); padding-bottom: 24px; }

@media (max-width: 560px) {
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .step img { width: 200px; height: 140px; }
}

/* 主路径双 tab */
.main-tabs { display: flex; gap: 10px; margin-bottom: 10px; }
.main-tabs button {
  flex: 1;
  padding: 14px 0;
  font-size: 1rem;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  color: var(--text);
  touch-action: manipulation;
}
.main-tabs button.on { border-color: var(--primary); color: #fff; background: var(--primary); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 6px 2px;
}

/* 表单控件 */
input[type="text"], input[type="number"], input[type="password"], select {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus { outline: 2px solid rgba(232, 134, 46, .35); border-color: var(--primary); }

.field { margin-bottom: 14px; }
.field > label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; }
.field.row { display: flex; align-items: center; }
.switch-label { font-size: .92rem; display: flex; align-items: center; gap: 8px; }
.switch-label input { width: 18px; height: 18px; }

.btn {
  display: inline-block;
  padding: 12px 18px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background .15s, opacity .15s;
  touch-action: manipulation;
}
.btn:active { opacity: .8; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; border-radius: 999px; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.primary:disabled { background: var(--primary); opacity: .55; cursor: not-allowed; }
.btn.block { width: 100%; }
.btn.ghost { background: transparent; white-space: nowrap; }
.btn.danger { color: #fff; background: var(--danger); border-color: var(--danger); }
.btn.small { padding: 8px 12px; font-size: .85rem; }

/* 豆径分段选择 */
.seg { display: flex; gap: 8px; }
.seg button {
  flex: 1;
  padding: 11px 0;
  font-size: .95rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}
.seg button.on { border-color: var(--primary); color: var(--primary); background: var(--primary-tint); font-weight: 600; }

/* 上传区 */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 30px 16px;
  text-align: center;
  cursor: pointer;
  background: #fafbfc;
}
.drop-zone.drag { border-color: var(--primary); background: var(--primary-tint); }

/* 结果区 */
.tabs { display: flex; gap: 8px; margin-bottom: 10px; }
.tabs button {
  flex: 1;
  padding: 10px 0;
  font-size: .95rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}
.tabs button.on { border-color: var(--primary); color: var(--primary); font-weight: 600; }
.result-image-wrap {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: auto;
  background: #fff;
  max-height: 70vh;
}
.result-image-wrap img { display: block; width: 100%; height: auto; image-rendering: pixelated; }
.download-row { display: flex; gap: 8px; margin: 12px 0; flex-wrap: wrap; }
.download-row .btn { flex: 1; min-width: 90px; }

/* 表格 */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: #f7f8fa; font-weight: 600; }
tr:last-child td { border-bottom: none; }
.swatch { display: inline-block; width: 18px; height: 18px; border-radius: 4px; border: 1px solid rgba(0,0,0,.12); vertical-align: middle; }

/* 裁剪视图 */
.ratio-row { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.ratio-row button {
  flex: 1;
  min-width: 64px;
  padding: 9px 0;
  font-size: .9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}
.ratio-row button.on { border-color: var(--primary); color: var(--primary); background: var(--primary-tint); font-weight: 600; }

.crop-canvas-wrap {
  display: flex;
  justify-content: center;
  border-radius: 10px;
  overflow: hidden;
}
#crop-canvas {
  display: block;
  border-radius: 10px;
  touch-action: none;
  cursor: grab;
  max-width: 100%;
}
#crop-canvas:active { cursor: grabbing; }

.crop-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px 0 6px;
}
.crop-controls input[type="range"] {
  flex: 1;
  height: 32px;
  accent-color: var(--primary);
}

.crop-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.crop-actions .btn { flex: 1; min-width: 110px; }

/* AI 萌版 */
.ai-row { display: flex; gap: 12px; align-items: flex-start; }
.ai-thumb {
  width: 88px;
  height: 88px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  flex-shrink: 0;
  background: #f0f1f3;
}
.ai-actions { flex: 1; display: flex; flex-direction: column; gap: 8px; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 12px 0 4px; }
.compare-grid figure { margin: 0; }
.compare-grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f0f1f3;
  display: block;
}
.compare-grid figcaption { text-align: center; font-size: .82rem; color: var(--muted); margin-top: 4px; }
.compare-grid figure.selected img { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(232, 134, 46, .3); }
@media (max-width: 560px) {
  .compare-grid { grid-template-columns: 1fr; }
  .ai-row { flex-direction: row; }
}

/* 自动匹配摘要行 */
.match-line { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin: 12px 0; }
.match-line strong { font-weight: 700; }
#crop-trim-note { margin-left: 8px; color: var(--primary-dark); }

/* 历史记录 */
.task-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
}
.task-item:last-child { border-bottom: none; }

/* 管理后台 */
.admin-keys {
  background: #f7f8fa;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  font-family: Consolas, Menlo, monospace;
  font-size: .9rem;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow: auto;
  margin: 10px 0;
}

@media (min-width: 720px) {
  .view { padding: 28px 24px; }
  h1 { font-size: 1.6rem; }
}