/* 旧工作台（/）样式：S3 换肤后只使用 ui-tokens.css 的设计变量。
 * 颜色取 --c-*，字号只取六级 --fs-*（最小 12），间距 / 圆角取 --sp-* / --r-*。
 * 4 步流程的内容与交互不属于样式，本文件只改外观。 */

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--c-text);
  background: var(--c-bg);
  font-family: var(--font-sans);
  font-size: var(--fs-14);
  line-height: 1.65;
}

button,
input,
select,
textarea { font: inherit; }

button { cursor: pointer; }
button:disabled { opacity: .5; cursor: wait; }

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--c-primary);
  outline-offset: 3px;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  font-size: var(--fs-28);
  letter-spacing: -.04em;
  line-height: 1.4;
  margin-bottom: var(--sp-2);
}

h2 {
  font-size: var(--fs-20);
  line-height: 1.5;
  margin-bottom: 9px;
}

h3 {
  font-size: var(--fs-16);
  margin-bottom: 7px;
}

p { margin-bottom: var(--sp-3); }

small,
.muted { color: var(--c-text-muted); }
small { font-size: var(--fs-12); }

/* 外框：侧边栏与顶栏 */
.layout {
  display: grid;
  grid-template-columns: 222px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.brand { display: flex; gap: 11px; align-items: center; }

.brandmark {
  width: 40px;
  height: 40px;
  background: var(--c-primary);
  color: var(--c-on-primary);
  border-radius: var(--r-12);
  display: grid;
  place-items: center;
  font-size: var(--fs-20);
  font-family: Georgia, serif;
}

.brand b { font-size: var(--fs-20); letter-spacing: .035em; }
.brand small { display: block; font-size: var(--fs-12); letter-spacing: .06em; }

.store-picker {
  border: 1px solid var(--c-border);
  border-radius: var(--r-12);
  background: var(--c-bg);
  padding: var(--sp-3);
}

.store-picker small { display: block; margin-bottom: 5px; }

.store-picker select {
  max-width: 100%;
  font-weight: 600;
  border: 0;
  background: transparent;
  color: var(--c-text);
  width: 100%;
}

.sidebar nav { display: grid; gap: 6px; }

.sidebar nav button {
  text-align: left;
  background: none;
  border: 0;
  padding: 11px var(--sp-3);
  border-radius: var(--r-8);
  color: var(--c-text-muted);
  display: flex;
  align-items: center;
  gap: 11px;
}

.sidebar nav button.active {
  background: var(--c-primary-soft);
  color: var(--c-primary);
  font-weight: 700;
}

.step-num {
  font-size: var(--fs-12);
  border: 1px solid var(--c-border);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.side-note {
  margin-top: auto;
  color: var(--c-text-muted);
  font-size: var(--fs-12);
  border-top: 1px solid var(--c-border);
  padding-top: 15px;
}

.topbar {
  background: color-mix(in srgb, var(--c-surface) 79%, transparent);
  border-bottom: 1px solid var(--c-border);
  padding: 15px var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  min-height: 67px;
}

.topbar .context { font-size: var(--fs-12); }

.topbar select {
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  border-radius: var(--r-8);
  padding: 7px 10px;
}

.container {
  max-width: 1380px;
  margin: auto;
  padding: 30px var(--sp-6) 70px;
}

.heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: var(--sp-5);
}

.eyebrow {
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--c-primary);
  margin-bottom: var(--sp-2);
  font-weight: 700;
}

.heading p { color: var(--c-text-muted); font-size: var(--fs-13); margin: 0; }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }

/* 按钮 */
.btn {
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  padding: 9px 15px;
  background: var(--c-surface);
  color: var(--c-text);
  font-size: var(--fs-12);
  font-weight: 600;
}

.btn:hover { border-color: var(--c-primary); color: var(--c-primary); }

.btn.primary {
  background: var(--c-primary);
  color: var(--c-on-primary);
  border-color: var(--c-primary);
}

.btn.soft {
  background: var(--c-primary-soft);
  color: var(--c-primary);
  border-color: transparent;
}

.btn.link { border: 0; padding: 3px 0; background: none; color: var(--c-primary); }

/* 面板与网格 */
.panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-12);
  padding: 22px;
  margin-bottom: 18px;
  min-width: 0;
}

.panel.subtle { background: var(--c-bg); }

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(290px, 1fr);
  gap: 18px;
  align-items: start;
}

.grid.equal { grid-template-columns: 1fr 1fr; }

.kpis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-bottom: 18px;
}

.kpi {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  padding: 18px;
  border-radius: var(--r-12);
}

.kpi span { font-size: var(--fs-12); color: var(--c-text-muted); }

.kpi strong {
  display: block;
  font-size: var(--fs-28);
  line-height: 1.5;
  letter-spacing: -.04em;
  margin: 7px 0;
}

.negative { color: var(--c-danger); }
.positive { color: var(--c-success); }

/* 标签 */
.pill {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  font-size: var(--fs-12);
  border-radius: var(--r-999);
  padding: 3px 9px;
  background: var(--c-surface-2);
  color: var(--c-text-muted);
}

.pill.warn { background: var(--c-warning-soft); color: var(--c-warning); }
.pill.ok { background: var(--c-success-soft); color: var(--c-success); }
.pill.rose { background: var(--c-primary-soft); color: var(--c-primary); }

/* 提示条 */
.note,
.callout {
  border-radius: var(--r-8);
  padding: 13px var(--sp-4);
  background: var(--c-success-soft);
  color: var(--c-success);
  font-size: var(--fs-12);
  margin: 15px 0;
}

.note.warn,
.callout.warn { background: var(--c-warning-soft); color: var(--c-warning); }
.note p:last-child { margin-bottom: 0; }

.empty {
  padding: 34px 20px;
  text-align: center;
  border: 1px dashed var(--c-border);
  border-radius: var(--r-12);
  background: var(--c-bg);
  color: var(--c-text-muted);
}

.empty h2 { color: var(--c-text); }

/* 表单 */
.form { display: grid; gap: 15px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }

.field { display: block; font-size: var(--fs-12); font-weight: 600; }

.field input,
.field select,
.field textarea {
  display: block;
  width: 100%;
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  background: var(--c-surface);
  padding: 10px 11px;
  color: var(--c-text);
  margin-top: 5px;
  min-width: 0;
}

.field input[type=checkbox] { display: inline; width: auto; margin-right: var(--sp-2); }
.field textarea { resize: vertical; min-height: 84px; }
.field small { display: block; font-weight: 400; margin-top: 5px; }

.check { display: flex; gap: 9px; align-items: flex-start; font-size: var(--fs-12); }
.check input { margin-top: 5px; flex: none; }

.upload {
  border: 1px dashed var(--c-primary);
  background: var(--c-primary-soft);
  border-radius: var(--r-12);
  padding: 26px;
}

.upload input { max-width: 100%; margin: var(--sp-4) 0; }
.upload h3 { font-size: var(--fs-20); }

/* 表格 */
.table-wrap { overflow: auto; }

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--fs-12);
  white-space: nowrap;
}

.table th { color: var(--c-text-muted); font-weight: 500; background: var(--c-surface-2); }
.table th,
.table td { padding: 10px var(--sp-3); border-bottom: 1px solid var(--c-border); }
.table th:first-child,
.table td:first-child { padding-left: 0; }
.table th:last-child,
.table td:last-child { padding-right: 0; }
.table tr.selected td { background: var(--c-primary-soft); }
.table td.wrap { white-space: normal; min-width: 160px; max-width: 300px; }

.source {
  border: 0;
  background: none;
  color: var(--c-primary);
  padding: 0 1px;
  text-align: inherit;
  font: inherit;
  text-decoration: underline;
  text-decoration-color: var(--c-border);
  text-underline-offset: 3px;
  cursor: pointer;
}

/* 指标与发现 */
.metric-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--c-border);
  padding: var(--sp-3) 0;
  font-size: var(--fs-13);
}

.metric-row:last-child { border: 0; }
.metric-row small { display: block; }
.metric-row b { white-space: nowrap; }

.finding { padding: 17px 0; border-bottom: 1px solid var(--c-border); }
.finding:first-of-type { padding-top: 5px; }
.finding:last-of-type { border: 0; padding-bottom: 0; }
.finding p { font-size: var(--fs-13); color: var(--c-text-muted); margin: 6px 0; }
.finding .fact { color: var(--c-text); }
.finding .btn { margin-top: 9px; }

.issue {
  border-left: 3px solid var(--c-warning);
  padding: 10px var(--sp-4);
  margin: var(--sp-3) 0;
  background: var(--c-warning-soft);
  border-radius: 0 var(--r-8) var(--r-8) 0;
}

.issue p { font-size: var(--fs-12); margin: 5px 0; }
.issue summary { cursor: pointer; }

.sources { display: flex; gap: 10px; flex-wrap: wrap; font-size: var(--fs-12); margin-top: var(--sp-2); }

.month-buttons { display: flex; gap: 5px; flex-wrap: wrap; margin-top: 10px; }

.month-buttons button {
  font-size: var(--fs-12);
  padding: 4px 7px;
  border: 1px solid transparent;
  border-radius: var(--r-8);
  background: none;
  color: var(--c-text-muted);
}

.month-buttons button.active {
  background: var(--c-primary-soft);
  color: var(--c-primary);
  border-color: var(--c-border);
}

.big-result {
  padding: 20px;
  background: var(--c-bg);
  border-radius: var(--r-12);
  margin: var(--sp-4) 0;
}

.big-result strong { font-size: var(--fs-28); line-height: 1.3; letter-spacing: -.04em; }
.big-result p { margin: 6px 0; color: var(--c-text-muted); font-size: var(--fs-12); }

.compare { display: grid; grid-template-columns: 1fr 32px 1fr; align-items: center; gap: var(--sp-3); }
.compare > div { text-align: center; }
.compare strong { display: block; font-size: var(--fs-28); }
.compare small { display: block; }

.formula {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  white-space: pre-wrap;
  background: var(--c-surface-2);
  padding: 13px;
  border-radius: var(--r-8);
  overflow-wrap: anywhere;
}

.fineprint { font-size: var(--fs-12); color: var(--c-text-muted); margin-top: 14px; }

/* 记录 */
.record {
  border: 1px solid var(--c-border);
  border-radius: var(--r-12);
  padding: 18px;
  margin: var(--sp-3) 0;
}

.record p { font-size: var(--fs-13); white-space: pre-wrap; }
.record h3 { margin: 7px 0; }
.record .meta {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  font-size: var(--fs-12);
  color: var(--c-text-muted);
}

.review-entry {
  background: var(--c-bg);
  border-radius: var(--r-8);
  padding: 10px var(--sp-3);
  margin-top: 10px;
  font-size: var(--fs-12);
}

/* 对话 */
.chat-feed {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  min-height: 180px;
  max-height: 650px;
  overflow: auto;
  padding: 6px 0 20px;
}

.bubble {
  white-space: pre-wrap;
  padding: 17px 19px;
  border-radius: var(--r-12);
  max-width: 94%;
  font-size: var(--fs-14);
  overflow-wrap: anywhere;
}

.bubble.user { align-self: flex-end; background: var(--c-primary-soft); }
.bubble.bot { background: var(--c-surface-2); align-self: flex-start; }
.bubble small { display: block; margin-bottom: 7px; }

.chat-form { border-top: 1px solid var(--c-border); padding-top: 18px; }

.chat-form textarea {
  width: 100%;
  min-height: 84px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  padding: var(--sp-3);
  resize: vertical;
}

.suggestions { display: flex; gap: 7px; flex-wrap: wrap; margin: var(--sp-3) 0; }

.suggestions button {
  font-size: var(--fs-12);
  border: 1px solid var(--c-border);
  border-radius: var(--r-999);
  padding: 6px 11px;
  background: var(--c-surface);
  color: var(--c-text-muted);
}

.error {
  background: var(--c-danger-soft);
  color: var(--c-danger);
  border-radius: var(--r-8);
  padding: var(--sp-3) 14px;
  font-size: var(--fs-13);
  margin: 10px 0;
}

.loading { padding: 60px; text-align: center; color: var(--c-text-muted); }

.login {
  max-width: 460px;
  margin: 12vh auto;
  padding: var(--sp-6);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-16);
}

/* 轻提示与来源弹窗 */
#toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 90%;
  background: var(--c-primary-strong);
  color: var(--c-on-primary);
  border-radius: var(--r-8);
  padding: 10px 18px;
  font-size: var(--fs-13);
  z-index: 10;
  display: none;
}

#toast.show { display: block; }

dialog {
  border: 1px solid var(--c-border);
  border-radius: var(--r-16);
  padding: 26px;
  width: min(650px, 92vw);
  max-height: 80vh;
  overflow: auto;
  color: var(--c-text);
}

dialog::backdrop { background: color-mix(in srgb, var(--c-text) 40%, transparent); }
dialog .source-value { font-size: var(--fs-20); overflow-wrap: anywhere; }

dialog pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: var(--c-surface-2);
  border-radius: var(--r-8);
  padding: var(--sp-4);
  font-size: var(--fs-12);
}

/* 步骤、页签与少量工具类 */
.progress-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: var(--sp-5) 0;
}

.progress-steps > div {
  padding: 18px;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
}

.progress-steps b { display: block; }
.progress-steps small { display: block; margin-top: 7px; }

.tabs { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin: 15px 0; }

.tabs button.active {
  background: var(--c-success-soft);
  color: var(--c-success);
  border-color: var(--c-success);
}

.section-gap { margin-top: 22px; }
.wide { grid-column: 1 / -1; }
.inline-error { color: var(--c-danger); font-size: var(--fs-12); }
.version-label { font-family: var(--font-mono); font-size: var(--fs-12); color: var(--c-text-muted); }
.no-margin { margin: 0; }

@media (min-width: 1450px) {
  .container { padding-left: 44px; padding-right: 44px; }
}

@media (max-width: 1050px) {
  .layout { grid-template-columns: 190px minmax(0, 1fr); }
  .sidebar { padding: var(--sp-5) 14px; }
  .container { padding: var(--sp-5) 20px 60px; }
  .topbar { padding: 14px 20px; }
  .grid { grid-template-columns: 1fr; }
  .kpi strong { font-size: var(--fs-20); }
}

@media (max-width: 740px) {
  .layout { display: block; }
  .sidebar {
    height: auto;
    position: relative;
    padding: 15px;
    gap: var(--sp-3);
    border-bottom: 1px solid var(--c-border);
  }
  .sidebar nav { display: flex; overflow: auto; }
  .sidebar nav button { white-space: nowrap; padding: var(--sp-2); }
  .step-num,
  .side-note,
  .brand small { display: none; }
  .brand b { font-size: var(--fs-20); }
  .store-picker { position: absolute; right: 15px; top: 15px; width: 170px; padding: 6px 10px; }
  .store-picker small { font-size: var(--fs-12); margin: 0; }
  .topbar { padding: var(--sp-3) 15px; }
  .container { padding: 23px 15px 60px; }
  .heading { align-items: flex-start; flex-direction: column; gap: var(--sp-3); }
  h1 { font-size: var(--fs-20); }
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .kpi { padding: 14px; }
  .grid.equal,
  .form-grid,
  .progress-steps { grid-template-columns: 1fr; }
  .panel { padding: 18px; }
  .version-label { display: none; }
  .bubble { max-width: 100%; }
  .compare strong { font-size: var(--fs-20); }
  .login { margin: 8vh 20px; }
}

/* 对话里的表格与代码 */
.bubble.bot { white-space: normal; }
.bubble.bot p:last-child { margin-bottom: 0; }
.bubble.bot .table { white-space: normal; }
.bubble.bot code { font-size: var(--fs-12); overflow-wrap: anywhere; }

/* 月度金额趋势 */
.trend-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 20px 0;
}

.trend-card {
  border: 1px solid var(--c-border);
  border-radius: var(--r-12);
  padding: 17px var(--sp-4) var(--sp-2);
  min-width: 0;
  background: var(--c-surface);
  position: relative;
}

.trend-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sp-3);
  min-height: 57px;
}

.trend-heading h3 { font-size: var(--fs-16); margin: 0 0 3px; }
.trend-heading small { font-size: var(--fs-12); }
.trend-current { text-align: right; }
.trend-current small { display: block; }
.trend-current b { display: block; font-size: var(--fs-20); line-height: 1.5; white-space: nowrap; }
.trend-current b span { font-size: var(--fs-12); font-weight: 400; color: var(--c-text-muted); }

.trend-svg { display: block; width: 100%; height: auto; overflow: visible; }
.trend-svg text { font-size: var(--fs-13); fill: var(--c-text-muted); }
.trend-svg .gridline { stroke: var(--c-border); stroke-width: 1; }
.trend-svg .zero-line { stroke: var(--c-text-muted); stroke-width: 1.5; }
.trend-svg .zero-label { fill: var(--c-text); font-weight: 700; }
.trend-svg .selected-month { fill: var(--c-primary-soft); }
.trend-svg .month-hit { cursor: pointer; }
.trend-svg .month-hit:hover { fill: color-mix(in srgb, var(--c-primary) 4%, transparent); }
.trend-svg .trend-line--sales { stroke: var(--c-chart-3); }
.trend-svg .trend-line--revenue { stroke: var(--c-chart-2); }
.trend-svg .trend-line--total { stroke: var(--c-warning); }
.trend-svg .trend-line--profit { stroke: var(--c-chart-1); }
.trend-svg .trend-dot--sales { fill: var(--c-chart-3); }
.trend-svg .trend-dot--revenue { fill: var(--c-chart-2); }
.trend-svg .trend-dot--total { fill: var(--c-warning); }
.trend-svg .trend-dot--profit { fill: var(--c-chart-1); }
.trend-svg .ratio-line { stroke: var(--c-chart-2); }
.trend-svg .ratio-dot { fill: var(--c-chart-2); }
.trend-svg .profit-bar { fill: var(--c-success); opacity: .9; }
.trend-svg .profit-bar.is-negative { fill: var(--c-danger); }

@media (max-width: 1050px) {
  .trend-grid { grid-template-columns: 1fr; }
  .trend-card { padding: 17px 18px var(--sp-2); }
  .trend-svg { max-height: 270px; }
}

@media (max-width: 740px) {
  .trend-grid { gap: var(--sp-3); }
  .trend-card { padding: 13px 10px 6px; }
  .trend-heading { min-height: 61px; }
  .trend-heading small { font-size: var(--fs-12); }
  .trend-current b { font-size: var(--fs-20); }
  .trend-svg text { font-size: var(--fs-16); }
}

/* 业务链与工作台 */
.business-chains {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-4);
  margin: var(--sp-5) 0;
}

.chain-card {
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  text-align: left;
  border-radius: var(--r-12);
  padding: 22px;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

.chain-card:hover,
.chain-card:focus-visible { border-color: var(--c-primary); background: var(--c-primary-soft); }
.chain-card small,
.chain-card strong,
.chain-card span { display: block; }
.chain-card small { color: var(--c-text-muted); }
.chain-card strong { font-size: var(--fs-20); margin: 10px 0; }
.chain-card span { font-size: var(--fs-13); color: var(--c-primary); }

.metric-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 18px 0;
  padding: 18px;
  background: var(--c-surface-2);
  border-radius: var(--r-12);
}

.metric-strip > div { min-width: 135px; flex: 1; }
.metric-strip small,
.metric-strip b { display: block; }
.metric-strip small { color: var(--c-text-muted); margin-bottom: 6px; }
.metric-strip b { font-size: var(--fs-20); }

.workbench-detail {
  border: 1px solid var(--c-border);
  border-radius: var(--r-12);
  padding: var(--sp-5);
  margin: var(--sp-5) 0;
  background: var(--c-bg);
}

.tool-picker { max-width: 450px; margin: 0 0 var(--sp-5); }
.table td small { display: block; color: var(--c-text-muted); margin-top: 5px; }
.table td .wrap { display: block; min-width: 240px; max-width: 650px; white-space: normal; }

.timeline-item { border-left: 3px solid var(--c-success); padding: 6px 18px; margin: 15px 0; }
.timeline-item > b { margin: 0 var(--sp-3); }

.tier-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }

fieldset {
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  padding: 18px;
  min-width: 0;
}

legend { padding: 0 7px; font-weight: 600; }
details > summary { cursor: pointer; }
details .table-wrap { margin-top: 14px; }
.business-record { margin-top: 18px; }
.metric-list .metric-row b { white-space: nowrap; }
.metric-list .metric-row { gap: var(--sp-4); }
.chain-card:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }

@media (max-width: 760px) {
  .business-chains { grid-template-columns: 1fr; gap: 10px; }
  .chain-card { padding: var(--sp-4); }
  .chain-card strong { font-size: var(--fs-16); margin: 5px 0; }
  .metric-strip { gap: 14px; padding: 14px; }
  .metric-strip > div { min-width: 120px; }
  .workbench-detail { padding: 15px; }
  .tool-picker { max-width: none; }
  .metric-list .metric-row { align-items: flex-start; }
  .metric-list .metric-row b { font-size: var(--fs-16); }
  .tier-grid { gap: 10px; }
  .timeline-item > b { display: block; margin: var(--sp-2) 0; }
}

.trend-svg .month-hit { cursor: crosshair; }

.trend-svg .month-hit:hover,
.trend-svg .month-hit.previewing,
.trend-svg .month-hit:focus-visible { fill: color-mix(in srgb, var(--c-primary) 9%, transparent); }

.trend-svg .month-hit:focus-visible { outline: 2px solid var(--c-primary); outline-offset: -2px; }

.trend-tooltip {
  position: absolute;
  z-index: 3;
  pointer-events: none;
  min-width: 145px;
  max-width: calc(100% - 16px);
  padding: 10px 13px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  background: var(--c-surface);
  box-shadow: 0 5px 20px color-mix(in srgb, var(--c-text) 13%, transparent);
  line-height: 1.5;
}

.trend-tooltip small,
.trend-tooltip span,
.trend-tooltip strong { display: block; }
.trend-tooltip small { color: var(--c-text-muted); font-size: var(--fs-12); }
.trend-tooltip span { font-size: var(--fs-12); }
.trend-tooltip strong { font-size: var(--fs-20); white-space: nowrap; }

/* 效率原型：单区域、分支课程与紧凑教练行 */
.efficiency-panel { scroll-margin-top: 82px; padding: 26px; background: var(--c-surface); }

.eff-card {
  border: 1px solid var(--c-border);
  border-radius: var(--r-12);
  padding: 17px;
  margin: 11px 0;
}

.eff-card:first-child { margin-top: 0; }
.eff-top { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sp-3); }
.eff-top > small { font-size: var(--fs-12); color: var(--c-text-muted); }
.eff-title { font-size: var(--fs-16); font-weight: 700; margin: 0; }

.eff-tag {
  font-size: var(--fs-12);
  border-radius: var(--r-999);
  padding: 5px 9px;
  white-space: nowrap;
  background: var(--c-success-soft);
  color: var(--c-success);
}

.eff-tag.unknown { background: var(--c-surface-2); color: var(--c-text-muted); }
.eff-tag.hypothesis { background: var(--c-warning-soft); color: var(--c-warning); }

.eff-averages { display: flex; gap: var(--sp-3); margin: var(--sp-4) 0; }

.eff-avg {
  flex: 1;
  min-width: 0;
  background: var(--c-bg);
  padding: 11px 13px;
  border-radius: var(--r-8);
}

.eff-avg span { display: block; color: var(--c-text-muted); font-size: var(--fs-12); }
.eff-avg b { display: block; font-size: var(--fs-20); line-height: 1.5; color: var(--c-text); }
.eff-avg small { font-size: var(--fs-12); color: var(--c-text-muted); }

.eff-control {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin: 14px 0 9px;
  color: var(--c-text-muted);
  font-size: var(--fs-12);
}

.eff-control label { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }

.eff-control select,
.eff-control input {
  font: inherit;
  max-width: 100%;
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  padding: 7px 9px;
}

.eff-control input { width: 120px; }
.eff-input-error { color: var(--c-danger); }
.eff-control input[aria-invalid=true],
.eff-control input:invalid { border-color: var(--c-danger); }

.eff-caption {
  font-size: var(--fs-12);
  color: var(--c-text-muted);
  line-height: 1.6;
  margin: 9px 0 0;
}

.eff-meter {
  position: relative;
  height: 10px;
  border-radius: var(--r-999);
  background: linear-gradient(to right,
    var(--c-surface-2) 0 50%,
    var(--c-success-soft) 50% 83.333%,
    var(--c-success) 83.333% 100%);
  margin: 18px 0 7px;
}

.eff-meter i {
  position: absolute;
  top: -5px;
  width: 4px;
  height: 20px;
  border-radius: var(--r-8);
  background: var(--c-primary);
  transform: translateX(-2px);
}

.eff-meter-labels {
  position: relative;
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-12);
  color: var(--c-text-muted);
}

.eff-meter-labels span:nth-child(2) { position: absolute; left: 50%; transform: translateX(-50%); }
.eff-meter-labels span:nth-child(3) { position: absolute; left: 83.333%; transform: translateX(-50%); }

.eff-number { font-size: var(--fs-28); line-height: 1.3; font-weight: 700; margin: 13px 0 2px; }
.eff-number small { font-size: var(--fs-12); color: var(--c-text-muted); font-weight: 400; }

.eff-logic {
  border-top: 1px solid var(--c-border);
  margin-top: 14px;
  padding-top: 9px;
  font-size: var(--fs-12);
  color: var(--c-text-muted);
  line-height: 1.7;
}

.eff-logic summary { cursor: pointer; color: var(--c-primary); }
.eff-logic p { margin: var(--sp-2) 0; }
.eff-footer { font-size: var(--fs-12); color: var(--c-text-muted); line-height: 1.6; margin-top: 15px; }

.eff-warning {
  font-size: var(--fs-12);
  color: var(--c-warning);
  background: var(--c-warning-soft);
  padding: 9px;
  border-radius: var(--r-8);
}

.eff-detail {
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  padding: 14px;
  margin-top: var(--sp-4);
  scroll-margin-top: 90px;
}

.eff-detail h3 { font-size: var(--fs-14); }
.eff-actions { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-top: 15px; }
.eff-actions .btn { font-size: var(--fs-12); }
.eff-sources { display: flex; gap: 6px; flex-wrap: wrap; margin: var(--sp-2) 0; }

.eff-sources button {
  font: inherit;
  font-size: var(--fs-12);
  color: var(--c-text-muted);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  padding: 5px 9px;
  cursor: pointer;
}

.eff-sources button[aria-pressed=true] {
  background: var(--c-primary-soft);
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.coach-table-wrap { overflow-x: auto; margin-top: var(--sp-3); }
.coach-table { border-collapse: collapse; width: 100%; min-width: 475px; text-align: left; }

.coach-table th {
  font-size: var(--fs-12);
  font-weight: 500;
  color: var(--c-text-muted);
  border-bottom: 1px solid var(--c-border);
  padding: 9px 7px;
}

.coach-table td {
  font-size: var(--fs-12);
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border);
  padding: 11px 7px;
  vertical-align: middle;
  white-space: nowrap;
}

.coach-table td strong { font-size: var(--fs-13); }
.coach-table small { display: block; font-size: var(--fs-12); color: var(--c-text-muted); }
.coach-table .coach-name { max-width: 125px; white-space: normal; text-align: left; line-height: 1.5; }

.coach-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: var(--sp-3);
  color: var(--c-text-muted);
  font-size: var(--fs-12);
}

.coach-pager button {
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  border-radius: var(--r-8);
  color: var(--c-text-muted);
  padding: 6px 10px;
  font-size: var(--fs-12);
  cursor: pointer;
}

.coach-pager button:disabled { color: var(--c-border); cursor: default; }
.coach-pager > div { display: flex; gap: 6px; }
.coach-table-note { font-size: var(--fs-12); color: var(--c-text-muted); line-height: 1.7; margin: var(--sp-2) 0 0; }

.income-compare { display: flex; align-items: center; gap: var(--sp-3); }
.income-compare > strong { min-width: 72px; }
.income-compare .source { color: inherit; white-space: nowrap; }

.coach-compare {
  margin: 0;
  min-width: 150px;
  max-width: 245px;
  flex: 1;
  display: grid;
  grid-template-columns: 48px minmax(18px, 1fr) 2px minmax(18px, 1fr) 48px;
  align-items: center;
}

.coach-delta-label { font-size: var(--fs-12); font-weight: 600; white-space: nowrap; }
.coach-delta-label.left { text-align: right; padding-right: 5px; color: var(--c-danger); }
.coach-delta-label.right { text-align: left; padding-left: 5px; color: var(--c-success); }

.coach-half { height: 8px; background: var(--c-surface-2); display: flex; align-items: stretch; }
.coach-half.left { justify-content: flex-end; border-radius: var(--r-8) 0 0 var(--r-8); }
.coach-half.right { justify-content: flex-start; border-radius: 0 var(--r-8) var(--r-8) 0; }
.coach-half i { height: 100%; border-radius: var(--r-8); }
.coach-half.left i { background: var(--c-danger); }
.coach-half.right i { background: var(--c-chart-2); }

.coach-middle { height: 16px; width: 2px; background: var(--c-text-muted); }
.coach-compare.unavailable .coach-middle { background: var(--c-border); }
.coach-compare.unavailable .coach-delta-label { color: var(--c-text-muted); font-weight: 400; }

.category-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-2);
  margin: var(--sp-4) 0 9px;
}

.category-heading b { font-size: var(--fs-13); }
.category-heading strong { font-size: var(--fs-16); color: var(--c-text); }
.category-heading .source { color: inherit; }

.coach-view-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  margin-top: 15px;
}

.coach-view-head b { font-size: var(--fs-13); }

.coach-all {
  border: 0;
  background: transparent;
  color: var(--c-primary);
  font-size: var(--fs-12);
  padding: 5px;
  cursor: pointer;
}

.coach-all.on { font-weight: 700; }

.coach-table th:nth-child(3),
.coach-table td:nth-child(3),
.coach-table th:nth-child(4),
.coach-table td:nth-child(4) { text-align: right; }

.coach-table th:nth-child(2) { text-align: left; }

.course-tree { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }

.course-branch {
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  border-radius: var(--r-8);
  padding: var(--sp-3);
  min-width: 0;
}

.course-branch.selected { border-color: var(--c-primary); }
.course-branch:last-child:nth-child(odd) { grid-column: 1 / -1; }

.course-branch-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px;
}

.course-branch-title > button {
  font: inherit;
  font-size: var(--fs-14);
  font-weight: 700;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--c-text);
  text-align: left;
}

.course-branch-title > button span { font-weight: 400; color: var(--c-primary); }
.course-branch-title strong,
.course-branch-title .source { font-size: var(--fs-14); color: var(--c-text); }
.course-branch-share { font-size: var(--fs-12); color: var(--c-text-muted); margin: 3px 0 var(--sp-2); }

.course-list { display: grid; gap: 5px; }

.course-gap {
  border: 1px solid var(--c-border);
  border-radius: var(--r-8);
  background: var(--c-surface);
  padding: 10px 9px;
}

.course-gap b,
.course-gap span { display: block; }
.course-gap b { font-size: var(--fs-12); font-weight: 500; color: var(--c-text-muted); }
.course-gap span { font-size: var(--fs-12); color: var(--c-text-muted); line-height: 1.6; margin-top: 4px; }
.course-gap .source { font-size: var(--fs-12); margin-top: 5px; }
.selected-price { font-size: var(--fs-12); color: var(--c-text-muted); margin: 5px 0 0; line-height: 1.5; }
.coach-table .eff-empty { white-space: normal; line-height: 1.7; text-align: left; color: var(--c-text-muted); }
.efficiency-panel :focus-visible { outline: 2px solid var(--c-primary); outline-offset: 3px; }

@media (max-width: 760px) {
  .efficiency-panel { padding: var(--sp-4); }
  .eff-card { padding: var(--sp-3); }
  .eff-top { gap: var(--sp-2); }
  .eff-top > small { font-size: var(--fs-12); }
  .eff-averages { gap: var(--sp-2); }
  .eff-avg { padding: 10px; }
  .eff-avg b { font-size: var(--fs-16); }
  .eff-avg span { font-size: var(--fs-12); }
  .eff-control { font-size: var(--fs-12); }
  .eff-control select { width: 100%; }
  .eff-control input { width: 100px; }
  .coach-table { min-width: 0; }
  .coach-table th,
  .coach-table td { padding: 9px 3px; font-size: var(--fs-12); }
  .coach-table th { white-space: normal; }
  .coach-table td strong { font-size: var(--fs-12); }
  .coach-table .coach-name { max-width: 85px; font-size: var(--fs-12); }
  .income-compare { gap: 4px; }
  .income-compare > strong { min-width: 50px; }
  .coach-compare { min-width: 95px; grid-template-columns: 28px minmax(8px, 1fr) 2px minmax(8px, 1fr) 28px; }
  .coach-delta-label { font-size: var(--fs-12); }
  .coach-pager { align-items: flex-start; }
  .course-tree { gap: 6px; }
  .course-branch { padding: var(--sp-2); }
  .course-branch-title { display: block; }
  .course-branch-title strong { display: block; margin-top: 2px; }
  .course-branch-title button,
  .course-branch-title .source { font-size: var(--fs-12); }
  .course-gap { padding: var(--sp-2) 6px; }
  .course-gap b { font-size: var(--fs-12); }
  .course-gap span { font-size: var(--fs-12); }
  .coach-view-head { align-items: flex-start; }
  .coach-all { max-width: 120px; text-align: right; }
  .eff-number { font-size: var(--fs-20); }
  .eff-detail { padding: 10px; }
  .eff-detail .metric-strip { grid-template-columns: 1fr; }
  .eff-actions { gap: 5px; }
  .eff-actions .btn { padding: 6px var(--sp-2); }
}