/* V1.1: a calmer palette and readable text, without changing calculations. */
:root {
  --bg: #f4f6f9;
  --paper: #ffffff;
  --ink: #243247;
  --muted: #5d6b7f;
  --line: #dfe5ed;
  --accent: #315bc4;
  --radius: 12px;
  --shadow: 0 2px 8px #24324703;
}
body { font-size: 14px; line-height: 1.65; }
button:focus-visible, a:focus-visible, input:focus-visible,
select:focus-visible, svg:focus-visible,
.upload-link:focus-within, .upload-button:focus-within {
  outline-color: #315bc4;
}
.sidebar { width: 200px; padding: 30px 15px; background: #fff; }
.brand { font-size: 22px; gap: 10px; }
.brand-mark { background: #273e68; }
.brand-mark svg { stroke: #fff; }
.brand-en { font-size: 10px; color: var(--muted); letter-spacing: 1px; }
.sidebar-label { font-size: 12px; color: var(--muted); letter-spacing: 0; }
.nav-item { color: #526176; font-size: 14px; gap: 9px; }
.nav-item.active { background: #edf2fc; color: #2c52af; }
.nav-dot { background: var(--accent); }
.sidebar-footer { margin-top: auto; font-size: 12px; color: var(--muted); padding: 24px 5px 0; }
.sidebar-footer div { font-size: 12px; color: var(--muted); }
main { margin-left: 200px; padding: 0 28px 30px; }
.topbar { height: 66px; }
.breadcrumb, .text-button { font-size: 13px; color: var(--muted); }
.breadcrumb span { color: #7c8798; }
.page-heading { padding: 26px 0; }
.page-heading h1 { font-size: 28px; font-weight: 650; letter-spacing: 0; }
.page-heading p { font-size: 14px; color: var(--muted); margin-top: 6px; }
.process { font-size: 12px; color: var(--muted); }
.process b { color: #455b80; background: #eaf0f9; border-color: #d3deef; font-size: 12px; }
.process i { background: #cdd6e3; }
.workspace { grid-template-columns: 316px minmax(0, 1fr); gap: 22px; }
.panel { animation: none; }
.panel-heading { padding: 18px 20px; border-bottom-color: var(--line); }
.panel-heading h2 { font-size: 16px; }
.tiny-pill { font-size: 12px; background: #f0f3f8; color: #5d6b7f; }
.setup-section { padding: 20px; border-bottom-color: var(--line); }
.setup-section h3 { font-size: 14px; margin-bottom: 14px; }
.step-num { font-size: 12px; color: #61718b; }
.data-card { background: #f7f9fc; border-color: #dce3ee; padding: 12px; }
.data-icon, .data-check { color: #426395; }
.data-card strong { font-size: 13px; max-width: 215px; }
.data-card span:not(.data-check) { font-size: 12px; color: var(--muted); }
.small-actions { margin-bottom: 18px; }
.upload-link, .link-button, .small-actions .link-button { font-size: 12px; color: #3158b3; }
.field-label { font-size: 13px; color: #35465d; }
.hint-label { font-size: 12px; color: var(--muted); }
.setup select, .setup input[type=date], .setup input[type=number] {
  height: 42px; font-size: 14px; color: #243247; border-color: #ccd5e1;
}
.date-row input[type=date] { font-size: 13px; padding: 0 7px; }
.date-row label { font-size: 12px; color: var(--muted); }
.field-note { font-size: 12px; color: var(--muted); line-height: 1.8; }
.strategy-option { padding: 10px 0; gap: 8px; }
.strategy-option strong { font-size: 14px; font-weight: 550; }
.strategy-option small { font-size: 12px; color: var(--muted); }
.strategy-option input { width: 16px; height: 16px; accent-color: var(--accent); }
.custom-strategy { border-top-color: #d8e0eb; }
.upload-button { font-size: 13px; color: #365994; border-color: #a9bbd8; background: #f8faff; }
.locked-rule { font-size: 12px; color: var(--muted); }
.locked-rule span { font-size: 12px; color: #456d5c; }
.run-area { padding: 17px 20px; background: #f8faff; border-bottom: 1px solid var(--line); }
.run-button { min-height: 46px; font-size: 15px; background: var(--accent); box-shadow: none; }
.run-button:hover:not(:disabled) { background: #264ba9; }
.run-area p { font-size: 12px; color: var(--muted); margin-top: 8px; }
.results-toolbar { min-height: 38px; margin-bottom: 12px; }
.results-toolbar strong { font-size: 14px; font-weight: 600; }
.result-period { font-size: 12px; color: var(--muted); }
.results-dot { background: #427961; }
.download-button { font-size: 12px; background: #fff; color: #40536f; border-color: #ccd6e4; }
.focus-row { font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.focus-row select { font-size: 13px; color: #2c4368; }
.focus-tip { font-size: 12px; color: var(--muted); }
.metric-grid { gap: 12px; margin-bottom: 20px; }
.metric-card { padding: 18px 16px; border-radius: 10px; }
.metric-label { font-size: 13px; color: #526176; white-space: normal; }
.metric-sub { font-size: 12px; color: var(--muted); white-space: normal; }
.metric-card strong, .metric-card:last-child strong {
  color: #233c62; font-size: 28px; margin: 12px 0 8px; letter-spacing: -.5px;
}
.metric-card:nth-child(2) strong { color: #95642f; }
.info-button { width: 16px; height: 16px; line-height: 14px; font-size: 11px; color: #5d6b7f; border-color: #aebacc; }
.chart-panel { padding: 22px 20px 16px; }
.chart-top h2 { font-size: 16px; }
.chart-top p { font-size: 12px; color: var(--muted); }
.segmented { background: #edf1f7; }
.segmented button { font-size: 12px; color: #5d6b7f; padding: 6px 10px; }
.segmented .selected { color: #2d51a6; }
.chart-legend .legend-item { font-size: 12px; color: #4f5f75; }
.chart-label { fill: #58687d; font-size: 12px; }
.chart-grid { stroke: #e8edf4; }
.chart-hover-line { stroke: #7085a5; }
.chart-tooltip { font-size: 12px; color: #35465d; border-color: #d8e1ed; }
.tooltip-date { font-size: 12px; color: #273e62; }
.chart-foot { font-size: 12px; color: var(--muted); border-top-color: #e6ebf2; flex-wrap: wrap; }
.research-tag { color: var(--muted); }
.detail-tabs { border-bottom-color: var(--line); gap: 24px; }
.detail-tabs button { font-size: 14px; color: #64748b; }
.detail-tabs .selected { color: #3158b3; border-bottom-color: #315bc4; }
.table-toolbar p, .table-bottom-note { font-size: 12px; color: var(--muted); }
.table-toolbar { flex-wrap: wrap; }
.results-table { font-size: 13px; }
.results-table th { font-size: 12px; color: #526176; background: #f7f9fc; font-weight: 550; border-bottom-color: #e1e7ef; }
.results-table td { font-size: 13px; color: #35465d; border-bottom-color: #edf0f5; }
.results-table tbody tr:hover { background: #f8faff; }
.strategy-name { color: #35465d; }
.best-mark { font-size: 11px; color: #426148; background: #edf5ec; }
.table-bottom-note { border-top-color: #e1e7ef; }
.trade-tools select, .trade-tools input { font-size: 13px; color: #35465d; border-color: #ccd6e4; }
.pagination { font-size: 12px; color: var(--muted); border-top-color: #e1e7ef; }
.pagination button { width: 32px; height: 30px; color: #47618a; border-color: #ccd6e4; }
.result-explainer { background: #eaf0f8; color: #526176; padding: 14px 16px; }
.result-explainer p, .result-explainer .link-button { font-size: 12px; }
.explain-symbol { color: #4e6381; border-color: #8395af; }
.workspace-footer, .workspace-footer a { font-size: 12px; color: var(--muted); }
.error-box, .warning-box, .dirty-note { font-size: 13px; }
.warning-box { color: #795c25; background: #fffaed; border-color: #ead9aa; }
.dirty-note { color: #31558b; background: #eef4ff; border-color: #c9d8f1; }
.empty-state h2 { color: #354d72; }
.empty-state p { font-size: 14px; color: var(--muted); }
.toast { background: #293f61; font-size: 13px; left: calc(50% + 100px); }
dialog { border-color: #d8e1ed; }
dialog::backdrop { background: #1e293b60; backdrop-filter: blur(2px); }
.dialog-head .eyebrow { display: none; }
.dialog-head .close-dialog { color: #61718b; }
.dialog-body { font-size: 14px; color: #526176; }
.dialog-foot { background: #f7f9fc; }
.primary-button { font-size: 14px; background: var(--accent); }
.guide-step>b { color: #3158b3; background: #edf2fc; }
.guide-step h3, .rules-list dt { font-size: 15px; color: #314968; }
.plain-note, .rule-intro, .formula-note { font-size: 13px; color: #526176; background: #f0f4fa; }
.rules-list dd { font-size: 14px; }
.muted { font-size: 13px; color: var(--muted); }
@media (min-width: 1600px) {
  main { padding-left: 40px; padding-right: 40px; }
  .workspace { grid-template-columns: 330px minmax(0,1fr); gap: 28px; }
  .metric-card strong, .metric-card:last-child strong { font-size: 30px; }
}
@media (max-width: 1420px) {
  .metric-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .focus-tip { display: none; }
  .chart-top { flex-wrap: wrap; }
}
@media (max-width: 1100px) {
  .sidebar { width: 76px; padding: 24px 12px; }
  .brand { padding: 0; justify-content: center; }
  .brand>span:last-child, .sidebar-label, .sidebar-footer,
  .nav-item:not(.active), .nav-item.active .nav-dot { display: none; }
  .sidebar nav { margin-top: 40px; }
  .nav-item.active { padding: 14px; font-size: 0; gap: 0; }
  .nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
  main { margin-left: 76px; padding: 0 22px 26px; }
  .workspace { grid-template-columns: 300px minmax(0,1fr); gap: 18px; }
  .process { display: none; }
  .info-button { display: inline-block; }
  .toast { left: calc(50% + 38px); }
}
@media (max-width: 820px) {
  .sidebar { position: static; width: auto; height: 65px; flex-direction: row; align-items: center; padding: 12px 20px; border-right: 0; border-bottom: 1px solid var(--line); }
  .brand>span:last-child { display: block; font-size: 19px; }
  .brand-mark { width: 32px; height: 34px; border-radius: 9px; }
  .brand-mark svg { width: 27px; }
  .brand-en { font-size: 9px; margin-top: 2px; }
  .sidebar nav { display: none; }
  main { margin: 0; padding: 0 18px 26px; }
  .topbar { height: 50px; }
  .breadcrumb, .text-button { font-size: 12px; }
  .breadcrumb span { padding: 0 6px; }
  .page-heading { padding: 24px 0; }
  .page-heading h1 { font-size: 25px; }
  .page-heading p { font-size: 14px; }
  .workspace { display: block; }
  .setup { margin-bottom: 24px; }
  .panel-heading, .setup-section { padding: 18px 20px; }
  .run-area { padding: 16px 20px; }
  .run-area p { font-size: 12px; }
  .data-card strong { max-width: 240px; }
  .setup select, .setup input[type=number], .date-row input[type=date] { font-size: 16px; height: 44px; }
  .date-row input[type=date] { font-size: 14px; }
  .field-label { flex-wrap: wrap; }
  .import-orders { flex-direction: column; }
  .upload-button { width: 100%; }
  .import-orders .link-button { font-size: 12px; }
  .metric-card { padding: 16px 14px; }
  .metric-card strong, .metric-card:last-child strong { font-size: 26px; }
  .metric-label { font-size: 12px; }
  .metric-sub { font-size: 12px; }
  .chart-panel { padding: 20px 14px 14px; }
  .chart-top { flex-wrap: wrap; }
  .chart-top h2 { font-size: 16px; }
  .chart-top p { font-size: 12px; max-width: none; }
  .chart-legend .legend-item { font-size: 12px; }
  .chart-wrap { overflow: visible; }
  .chart-label { font-size: 15px; }
  .chart-foot { font-size: 12px; }
  .detail-tabs { gap: 22px; }
  .detail-tabs button { font-size: 14px; }
  .table-toolbar p { font-size: 12px; }
  .trade-tools select, .trade-tools input { font-size: 13px; }
  .result-explainer p, .workspace-footer { font-size: 12px; }
  .toast { left: 50%; }
}