:root {
  --ink: #2b3a4a;
  --blue: #3f6ea5;
  --blue-light: #c9d9ea;
  --bg: #f6f4ef;
  --panel: #ffffff;
  --line: #e3ded4;
  --danger: #b3492f;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}
.site-header { text-align: center; padding: 28px 16px 8px; }
.site-header h1 { margin: 0 0 6px; font-size: 28px; letter-spacing: 4px; }
.site-header p { margin: 0; color: #7a7466; font-size: 14px; }

.layout { max-width: 1080px; margin: 20px auto 60px; padding: 0 14px; display: grid; gap: 18px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.panel h2 { margin: 0 0 14px; font-size: 18px; display: flex; align-items: center; gap: 10px; }
.step-num {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--blue); color: #fff; font-size: 14px;
  display: inline-flex; align-items: center; justify-content: center;
}

/* 器型选择 */
.vessel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.vessel-card {
  border: 2px solid var(--line); border-radius: var(--radius);
  background: #fbfaf7; cursor: pointer; padding: 10px; text-align: center;
  transition: border-color .15s, transform .15s;
}
.vessel-card img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.vessel-card .v-name { font-weight: 600; margin-top: 4px; }
.vessel-card .v-desc { font-size: 12px; color: #8b8474; margin-top: 2px; }
.vessel-card:hover { transform: translateY(-2px); }
.vessel-card.active { border-color: var(--blue); background: #eef4fa; }

.angle-tabs { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.angle-tab {
  border: 1px solid var(--line); background: #fbfaf7; border-radius: 999px;
  padding: 6px 16px; font-size: 14px; cursor: pointer;
}
.angle-tab.active { background: var(--blue); border-color: var(--blue); color: #fff; }

/* 编辑器 */
.editor-wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr); gap: 16px; align-items: start; }
.canvas-holder { position: relative; }
#editor {
  width: 100%; aspect-ratio: 1; display: block;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fbfaf7; touch-action: none;
}
.canvas-hint {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: #a39a86; font-size: 15px; pointer-events: none;
}
.canvas-hint.hidden { display: none; }

.toolbar { display: flex; flex-direction: column; gap: 12px; }
.tool-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tool-label { font-size: 13px; color: #8b8474; }
.tool-row input[type="range"] { flex: 1; min-width: 90px; }
.text-input {
  flex: 1; min-width: 120px; padding: 9px 10px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px;
}
.tips { font-size: 13px; color: #8b8474; margin: 0; line-height: 1.7; }

.btn {
  border: 1px solid var(--line); background: #fbfaf7; color: var(--ink);
  border-radius: 10px; padding: 10px 16px; font-size: 14px; cursor: pointer;
}
.btn:hover { border-color: var(--blue); color: var(--blue); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-primary:hover { background: #35608f; color: #fff; }
.btn-danger { border-color: #e4c4ba; color: var(--danger); }
.btn-lg { padding: 13px 28px; font-size: 16px; }

/* 提交表单 */
#submitForm label { display: block; font-size: 14px; color: #5f6b78; margin-bottom: 10px; }
#submitForm input, #submitForm textarea {
  width: 100%; margin-top: 6px; padding: 10px 12px; font-size: 14px;
  border: 1px solid var(--line); border-radius: 8px; font-family: inherit; resize: vertical;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.submit-row { display: flex; align-items: center; gap: 14px; margin-top: 6px; flex-wrap: wrap; }
.submit-status { font-size: 14px; color: #8b8474; }
.submit-status.err { color: var(--danger); }

/* 弹层 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(30, 40, 50, .45);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.modal-mask.hidden, .hidden { display: none !important; }
.modal {
  background: #fff; border-radius: var(--radius); padding: 22px;
  max-width: 460px; width: 100%; text-align: center;
}
.modal img { max-width: 100%; border-radius: 10px; border: 1px solid var(--line); margin: 12px 0; }
.modal p { font-size: 14px; color: #5f6b78; text-align: left; }
.link-row { display: flex; gap: 8px; }
.link-row input { flex: 1; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; }
.modal-actions { margin-top: 14px; }

.toast {
  position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%);
  background: rgba(43, 58, 74, .92); color: #fff; padding: 10px 20px;
  border-radius: 999px; font-size: 14px; z-index: 60; pointer-events: none;
}
.site-footer { text-align: center; color: #a39a86; font-size: 13px; padding: 0 16px 40px; }

@media (max-width: 760px) {
  .editor-wrap { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .site-header h1 { font-size: 22px; }
  #layerTools { align-content: flex-start; }
}