:root {
  color-scheme: light;
  --paper: #f3f0e9;
  --paper-deep: #e9e4da;
  --surface: #fffdf8;
  --surface-muted: #f8f5ef;
  --ink: #1e2523;
  --muted: #65706c;
  --line: #d8d1c5;
  --line-strong: #bcb3a5;
  --accent: #c94e2c;
  --accent-deep: #9e3720;
  --accent-soft: #f7e4dc;
  --green: #176b4b;
  --green-soft: #e3f1e9;
  --amber: #9b6816;
  --amber-soft: #f8eed8;
  --red: #a53d32;
  --red-soft: #f7e5e2;
  --radius: 8px;
  --shadow: 0 14px 40px rgb(65 48 32 / 8%);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--paper); color: var(--ink); }
body { margin: 0; min-height: 100dvh; }
button, input, select, textarea { font: inherit; color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(38px, 6vw, 72px); line-height: 1.04; letter-spacing: -.055em; }
h2 { font-size: clamp(25px, 3vw, 34px); line-height: 1.12; letter-spacing: -.035em; }
h3 { font-size: 17px; letter-spacing: -.015em; }
small { color: var(--muted); }

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-seal {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--surface);
  font: 800 15px/1 "Cascadia Mono", monospace;
  letter-spacing: -.04em;
}
.brand > span:last-child { display: grid; gap: 3px; }
.brand strong { font-size: 15px; }
.brand small { font-size: 10px; letter-spacing: .06em; }
.boundary-label, .preview-badge, .charged-badge, .result-state {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}
.preview-badge { border-color: #d8b784; background: var(--amber-soft); color: var(--amber); }
.charged-badge { border-color: #dbaf9f; background: var(--accent-soft); color: var(--accent-deep); }

.section-kicker {
  color: var(--accent-deep);
  font: 750 11px/1.3 "Cascadia Mono", "Microsoft YaHei UI", monospace;
  letter-spacing: .14em;
}

.auth-gate { min-height: 100dvh; background: linear-gradient(90deg, transparent 0 52%, rgb(255 253 248 / 82%) 52%); }
.auth-header, .app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 15px clamp(18px, 3vw, 44px);
  border-bottom: 1px solid var(--line);
}
.auth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, .75fr);
  gap: clamp(30px, 6vw, 96px);
  align-items: center;
  width: min(1360px, calc(100% - 40px));
  min-height: calc(100dvh - 72px);
  margin: 0 auto;
  padding: 42px 0 64px;
}
.auth-story { max-width: 760px; }
.auth-story h1 { margin: 14px 0 24px; }
.auth-lede { max-width: 620px; color: #49534f; font-size: clamp(16px, 1.6vw, 20px); line-height: 1.75; }
.auth-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 34px 0 24px; border: 1px solid var(--line); background: var(--line); }
.auth-facts div { padding: 16px; background: rgb(255 253 248 / 76%); }
.auth-facts dt { color: var(--muted); font-size: 11px; }
.auth-facts dd { margin: 7px 0 0; font-size: 18px; font-weight: 760; }
.legal-note { max-width: 660px; padding-left: 15px; border-left: 3px solid var(--accent); color: var(--muted); font-size: 12px; line-height: 1.75; }

.auth-panel {
  width: 100%;
  max-width: 490px;
  justify-self: end;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; margin-bottom: 23px; padding: 3px; border-radius: var(--radius); background: var(--paper-deep); }
.auth-tab { min-height: 38px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); }
.auth-tab.active { background: var(--surface); color: var(--ink); box-shadow: 0 2px 9px rgb(48 43 36 / 9%); }
.auth-form, .form-stack, .strategy-side, .run-form { display: grid; gap: 15px; }
.auth-form > div:first-child { display: grid; gap: 7px; margin-bottom: 3px; }
.auth-form h2 { font-size: 27px; }

label { display: grid; gap: 6px; color: #39413e; font-size: 12px; }
label > span:first-child { font-weight: 680; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fffefa;
  color: var(--ink);
  outline: none;
  transition: border-color .16s ease, box-shadow .16s ease, background .16s ease;
}
input, select { min-height: 42px; padding: 9px 11px; }
textarea { padding: 10px 11px; line-height: 1.65; resize: vertical; }
input::placeholder, textarea::placeholder { color: #8b918e; opacity: 1; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgb(201 78 44 / 12%); background: #fff; }
input:disabled, select:disabled, textarea:disabled { background: #eeeae2; color: #8c928f; }

.primary-button, .secondary-button, .quiet-button, .file-button, .workspace-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-weight: 700;
  transition: transform .14s ease, background .14s ease, border-color .14s ease;
}
.primary-button { border-color: var(--accent-deep); background: var(--accent); color: #fffaf7; }
.primary-button:hover { background: var(--accent-deep); }
.secondary-button { border-color: var(--ink); background: var(--ink); color: var(--surface); }
.secondary-button:hover { background: #39413f; }
.quiet-button, .file-button { border-color: var(--line); background: var(--surface); color: var(--ink); }
.quiet-button:hover, .file-button:hover { border-color: var(--line-strong); background: var(--surface-muted); }
button:active, .file-button:active { transform: translateY(1px); }
button:disabled { cursor: not-allowed; opacity: .52; transform: none; }
.wide-button { width: 100%; min-height: 47px; }
.button-row, .filter-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.consent-row { grid-template-columns: 20px 1fr; align-items: start; font-size: 11px; line-height: 1.65; }
.consent-row input { width: 16px; min-height: 16px; margin-top: 2px; accent-color: var(--accent); }
.form-help, .form-message { color: var(--muted); font-size: 11px; line-height: 1.6; }
.form-message.error { color: var(--red); }
.form-message.success { color: var(--green); }

.backtest-app { min-height: 100dvh; }
.app-header { position: sticky; top: 0; z-index: 20; background: rgb(243 240 233 / 94%); backdrop-filter: blur(14px); }
.account-cluster { display: flex; align-items: center; gap: 12px; }
.account-copy { display: grid; gap: 2px; text-align: right; }
.account-copy span { font-size: 13px; font-weight: 760; }
.account-copy small { font-size: 10px; }
.balance-chip { display: grid; grid-template-columns: auto auto; column-gap: 8px; align-items: baseline; padding: 7px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.balance-chip span { color: var(--muted); font-size: 10px; }
.balance-chip strong { font-size: 21px; font-variant-numeric: tabular-nums; }
.balance-chip small { grid-column: 1 / -1; font-size: 9px; }

.workspace { width: min(1450px, calc(100% - 32px)); margin: 0 auto; padding: 20px 0 70px; }
.status-strip { display: grid; grid-template-columns: 1.3fr repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.status-cell { display: grid; gap: 4px; padding: 14px 16px; background: var(--surface); }
.status-cell span { color: var(--muted); font-size: 10px; }
.status-cell strong { font-size: 18px; font-variant-numeric: tabular-nums; }
.status-cell small { font-size: 10px; }
.primary-status { background: #242c29; color: var(--surface); }
.primary-status span, .primary-status small { color: #b9c0bd; }
.primary-status strong { color: #fff7ef; }
.health-good { color: var(--green) !important; }
.health-warn { color: var(--amber) !important; }
.health-bad { color: var(--red) !important; }

.workspace-tabs { display: flex; gap: 4px; margin: 18px 0 12px; padding: 4px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-deep); }
.workspace-tab { min-width: 112px; border-color: transparent; background: transparent; color: var(--muted); }
.workspace-tab.active { border-color: var(--line); background: var(--surface); color: var(--ink); box-shadow: 0 2px 10px rgb(44 39 31 / 7%); }
.workspace-panel { display: none; padding: clamp(18px, 3vw, 30px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.workspace-panel.active { display: block; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 20px; }
.panel-heading > div { display: grid; gap: 7px; }
.panel-heading p:last-child { max-width: 760px; color: var(--muted); font-size: 12px; line-height: 1.65; }

.strategy-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); gap: 25px; align-items: start; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.form-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.summary-card { display: grid; gap: 7px; padding: 16px; border-left: 3px solid var(--accent); background: var(--surface-muted); }
.summary-card span { color: var(--muted); font-size: 10px; }
.summary-card strong { font-size: 18px; }
.summary-card small { font-size: 10px; }
.strategy-side textarea { font: 11px/1.55 "Cascadia Mono", "Microsoft YaHei UI", monospace; }

.filter-board { display: grid; gap: 16px; }
fieldset { min-width: 0; margin: 0; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-muted); }
legend { padding: 0 6px; font-size: 12px; font-weight: 760; }
fieldset > small { display: block; margin-top: 9px; color: var(--muted); font-size: 10px; line-height: 1.55; }
.position-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.position-row { display: grid; grid-template-columns: 40px 1fr 1fr; gap: 8px; align-items: end; padding: 10px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); }
.position-row > strong { padding-bottom: 12px; }
.position-row label { font-size: 10px; }
.position-row input { min-height: 38px; }
.filter-grid { display: grid; gap: 12px; }
.filter-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.filter-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.inline-fields { display: flex; gap: 8px; align-items: end; }
.inline-fields > * { flex: 1; min-width: 0; }
.inline-fields label { display: flex; align-items: center; gap: 6px; }
.inline-fields label input { min-width: 0; }
.three-lines { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.rule-block { display: grid; gap: 9px; padding: 10px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); }
.check-row { display: flex; flex-wrap: wrap; gap: 9px 14px; align-items: center; }
.check-row.compact { margin-top: 8px; }
.check-row label { display: inline-flex; grid-template-columns: auto auto; align-items: center; gap: 5px; font-size: 11px; }
.check-row input { width: 15px; min-height: 15px; accent-color: var(--accent); }
.mode-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.full-input, .full-label { margin-top: 9px; }
.permutation-grid { display: grid; grid-template-columns: 1fr auto 1fr auto; gap: 9px; align-items: end; }
.filter-actions { margin-top: 16px; }
.preview-result { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 18px; align-items: start; margin-top: 17px; padding: 16px; border: 1px dashed var(--line-strong); border-radius: var(--radius); background: #fcfaf5; }
.preview-result > div { display: grid; gap: 5px; }
.preview-result > div strong { color: var(--accent-deep); font-size: 42px; line-height: 1; font-variant-numeric: tabular-nums; }
.preview-result > div small { font-size: 10px; }
.preview-result textarea { font: 12px/1.65 "Cascadia Mono", monospace; }
.preview-result .form-message { grid-column: 1 / -1; }

.run-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .65fr); gap: 24px; align-items: start; }
.billing-box { padding: 15px; border: 1px solid var(--line); border-left: 3px solid var(--accent); background: var(--surface-muted); }
.billing-box > div { display: inline-grid; gap: 4px; min-width: 120px; margin-right: 28px; }
.billing-box span { color: var(--muted); font-size: 10px; }
.billing-box strong { font-size: 21px; font-variant-numeric: tabular-nums; }
.billing-box p { margin-top: 10px; color: var(--muted); font-size: 11px; line-height: 1.55; }
.billing-box p.warning { color: var(--red); }
.recent-panel { min-width: 0; padding: 15px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-muted); }
.recent-runs { display: grid; gap: 1px; max-height: 520px; overflow: auto; background: var(--line); }
.recent-run { display: grid; gap: 5px; padding: 11px; background: var(--surface); }
.recent-run header { display: flex; justify-content: space-between; gap: 10px; }
.recent-run strong { font-size: 12px; }
.recent-run span, .recent-run small { color: var(--muted); font-size: 10px; }

.result-state { border-color: var(--line); }
.result-state.preview { border-color: #d8b784; background: var(--amber-soft); color: var(--amber); }
.result-state.charged { border-color: #dbaf9f; background: var(--accent-soft); color: var(--accent-deep); }
.result-state.failed { border-color: #e0b1a8; background: var(--red-soft); color: var(--red); }
.metric-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1px; overflow: hidden; margin-bottom: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.metric { display: grid; gap: 5px; padding: 14px; background: var(--surface); }
.metric span { color: var(--muted); font-size: 10px; }
.metric strong { font-size: 22px; font-variant-numeric: tabular-nums; }
.metric.positive strong { color: var(--green); }
.metric.negative strong { color: var(--red); }
.distribution-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.distribution-card { padding: 15px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-muted); }
.distribution-card > div:first-child { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; margin-bottom: 12px; }
.distribution-card p { color: var(--muted); font-size: 11px; }
.distribution-card p strong { color: var(--ink); font-size: 20px; }
.distribution-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; max-height: 240px; overflow: auto; padding-right: 4px; }
.distribution-item { padding: 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.distribution-item span { display: block; color: var(--muted); font-size: 9px; }
.distribution-item strong { display: block; margin-top: 4px; font-size: 18px; font-variant-numeric: tabular-nums; }
.detail-card { min-width: 0; padding: 15px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-muted); }
.page-label { color: var(--muted); font-size: 11px; }
.detail-table-wrap { overflow: auto; border: 1px solid var(--line); background: var(--surface); }
.detail-table { width: 100%; min-width: 880px; border-collapse: collapse; font-size: 11px; }
th, td { padding: 10px 9px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { position: sticky; top: 0; z-index: 2; background: #ebe6dc; color: #4d5753; font-size: 10px; }
tbody tr:last-child td { border-bottom: 0; }
td.number, th.number { text-align: right; font-variant-numeric: tabular-nums; }
td.positive { color: var(--green); }
td.negative { color: var(--red); }
.status-text { display: inline-flex; padding: 3px 7px; border-radius: 999px; background: var(--surface-muted); font-size: 9px; }
.status-text.hit { background: var(--green-soft); color: var(--green); }
.status-text.miss { background: var(--red-soft); color: var(--red); }
.status-text.blow { background: var(--amber-soft); color: var(--amber); }
.pagination { display: flex; justify-content: flex-end; align-items: center; gap: 10px; margin-top: 12px; }
.pagination span { color: var(--muted); font-size: 10px; }
.empty-copy, .empty-state { color: var(--muted); font-size: 11px; line-height: 1.6; }
.wide-empty { grid-column: 1 / -1; padding: 18px; background: var(--surface); }

.toast { position: fixed; right: 20px; bottom: 20px; z-index: 50; max-width: min(400px, calc(100vw - 40px)); padding: 12px 15px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--ink); color: var(--surface); box-shadow: var(--shadow); opacity: 0; transform: translateY(10px); pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--red); }

@media (max-width: 1080px) {
  .auth-layout { grid-template-columns: 1fr; min-height: auto; }
  .auth-panel { justify-self: start; max-width: 640px; }
  .strategy-layout, .run-layout { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
  .auth-header, .app-header { padding: 12px 15px; }
  .boundary-label, .account-copy { display: none; }
  .auth-layout { width: min(100% - 24px, 680px); padding: 28px 0 42px; }
  .auth-facts { grid-template-columns: 1fr; }
  .workspace { width: min(100% - 20px, 760px); }
  .status-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .position-grid, .filter-grid.two, .filter-grid.three, .distribution-layout { grid-template-columns: 1fr; }
  .position-row { grid-template-columns: 38px 1fr 1fr; }
  .form-grid, .form-grid.three { grid-template-columns: 1fr; }
  .permutation-grid { grid-template-columns: 1fr 1fr; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .distribution-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .preview-result { grid-template-columns: 1fr; }
  .panel-heading { flex-direction: column; }
  .button-row, .filter-actions { display: grid; grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .brand small, .balance-chip span, .balance-chip small { display: none; }
  .account-cluster { gap: 7px; }
  .balance-chip { display: block; padding: 7px 10px; }
  .workspace-panel { padding: 15px 12px; }
  .status-strip { grid-template-columns: 1fr; }
  .three-lines, .position-row { grid-template-columns: 1fr; }
  .position-row > strong { padding-bottom: 0; }
  .metric-grid { grid-template-columns: 1fr; }
  .distribution-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0 !important; animation-duration: 0 !important; }
}