.config-main {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: stretch;
}

/* tab 切换 */
.config-tabs {
  display: flex;
  gap: 8px;
  background: var(--paper);
  padding: 6px;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(40, 30, 20, 0.06);
}
.config-tabs .tab {
  flex: 1;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  cursor: pointer;
  border-radius: 8px;
  letter-spacing: 1px;
  transition: background .15s, color .15s;
}
.config-tabs .tab:hover { color: var(--ink); }
.config-tabs .tab.active {
  background: var(--accent);
  color: #fff;
}
.tab-pane[hidden] { display: none; }

/* 句子卡片样式复用 .level-card，但段输入框占满 */
.section-row[data-sentence] {
  grid-template-columns: 1fr 34px;
}
.sentence-text {
  font-family: "STKaiti", "KaiTi", "楷体", serif;
  letter-spacing: 2px;
}
.sent-count { font-size: 12px; color: var(--muted); flex-shrink: 0; }
.del-sentence {
  width: 34px; height: 34px;
  padding: 0; border-radius: 8px;
  background: #fff; border: 1.5px solid var(--line);
  color: var(--accent); cursor: pointer;
  font-size: 16px; line-height: 1;
}
.del-sentence:hover { background: #fdecea; border-color: var(--accent); }
.add-sentence {
  align-self: flex-start;
  height: 34px; padding: 0 14px;
  border-radius: 8px; background: #fff;
  border: 1.5px dashed var(--grid);
  color: var(--muted); cursor: pointer;
  font-size: 14px; font-family: inherit;
}
.add-sentence:hover { color: var(--accent); border-color: var(--accent); }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  background: var(--paper);
  padding: 12px 16px;
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(40, 30, 20, 0.06);
}
.toolbar-right {
  display: flex;
  gap: 10px;
  align-items: center;
}
.btn-link {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  background: #fff;
}
.btn-link:hover { background: #faf7f1; }
.save-state {
  font-size: 13px;
  color: var(--muted);
  min-width: 80px;
  text-align: right;
}
.save-state.ok { color: #168F16; }
.save-state.err { color: var(--accent); }

.levels {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.level-card {
  background: var(--paper);
  border-radius: 16px;
  padding: 14px 16px 16px;
  box-shadow: 0 6px 20px rgba(40, 30, 20, 0.06);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.level-head {
  display: flex;
  align-items: center;
  gap: 10px;
}
.level-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  flex-shrink: 0;
}
.level-name {
  flex: 1;
  height: 34px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
  font-size: 15px;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
}
.level-name:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200, 57, 47, 0.12);
}
.section-count {
  font-size: 12px;
  color: var(--muted);
  flex-shrink: 0;
}
.sections {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.section-row {
  display: grid;
  grid-template-columns: 90px 1fr 34px;
  gap: 8px;
  align-items: center;
}
.section-row input {
  height: 34px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
  font-size: 15px;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
}
.section-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200, 57, 47, 0.12);
}
.section-chars {
  font-family: "STKaiti", "KaiTi", "楷体", serif;
  letter-spacing: 2px;
}
.del-section {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 8px;
  background: #fff;
  border: 1.5px solid var(--line);
  color: var(--accent);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}
.del-section:hover { background: #fdecea; border-color: var(--accent); }

.add-section {
  align-self: flex-start;
  height: 34px;
  padding: 0 14px;
  border-radius: 8px;
  background: #fff;
  border: 1.5px dashed var(--grid);
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
}
.add-section:hover { color: var(--accent); border-color: var(--accent); }

.config-main .hint code {
  background: #f0ece3;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--ink);
}