:root {
  color-scheme: light;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #1c2434;
  background: #f4f6fa;
  font-synthesis: none;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { max-width: 100%; overflow-x: hidden; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 10% 0%, #e9efff 0, transparent 34rem), #f4f6fa; }
main, section, article, nav, form, div { min-width: 0; }
img, svg, video, canvas { max-width: 100%; }
button, input, select, textarea { font: inherit; }
button { border: 0; border-radius: 10px; padding: 11px 18px; background: #244bd6; color: white; font-weight: 700; cursor: pointer; }
button:hover { background: #173caf; }
button:disabled { cursor: not-allowed; opacity: .55; }
button.secondary { background: #edf1fb; color: #24355b; }
button.secondary:hover { background: #dfe6f7; }
button.danger { background: #b52a35; }
a { color: inherit; }

.topbar { min-height: 62px; padding: 12px max(18px, calc((100vw - 1120px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 16px; background: rgba(255,255,255,.92); border-bottom: 1px solid #dfe4ee; position: sticky; top: 0; z-index: 10; backdrop-filter: blur(10px); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; text-decoration: none; }
.brand span { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; background: #1f47d2; color: white; font-size: 14px; }
.toplinks { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; column-gap: 16px; row-gap: 6px; }
.toplinks > a { color: #2449bd; font-weight: 700; font-size: 14px; }
.boundary { margin: 0; color: #5a6375; font-size: 13px; }
.app-shell { width: min(1120px, calc(100% - 32px)); margin: 24px auto 64px; }
.notice, .safe-boundary { padding: 12px 16px; border: 1px solid #c7d5ff; border-radius: 12px; background: #eef3ff; color: #27427c; }
.notice { margin-bottom: 22px; }
.auth-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, .8fr); gap: 24px; align-items: stretch; }
.intro-card, .auth-card, .panel, .workspace-head { background: white; border: 1px solid #e0e5ee; border-radius: 18px; box-shadow: 0 16px 40px rgba(33, 47, 85, .07); }
.intro-card { padding: clamp(28px, 5vw, 58px); background: linear-gradient(135deg, #173bba, #2c61e8); color: white; }
.intro-card h1 { margin: 8px 0 24px; font-size: clamp(34px, 5vw, 58px); line-height: 1.05; }
.intro-card ol { display: grid; gap: 13px; padding-left: 22px; font-size: 18px; }
.auth-card { padding: 28px; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; border-radius: 12px; background: #eff2f8; margin-bottom: 24px; }
.segmented button { background: transparent; color: #5d6678; }
.segmented button.active { background: white; color: #1f3da1; box-shadow: 0 2px 8px rgba(40,50,80,.12); }
.stack-form, .inline-form { display: grid; gap: 16px; }
label { display: grid; gap: 7px; font-weight: 650; color: #374155; }
input, select, textarea { width: 100%; border: 1px solid #cbd3df; border-radius: 9px; padding: 11px 12px; color: #182033; background: white; }
input:focus, select:focus, textarea:focus { outline: 3px solid #c8d5ff; border-color: #315bd9; }
.form-message { min-height: 22px; margin: 10px 0 0; color: #b02531; }
.eyebrow { margin: 0; color: #2c55cf; font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.intro-card .eyebrow { color: #dbe4ff; }

.workspace-head { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 22px 26px; margin-bottom: 18px; }
.workspace-head h1 { margin: 6px 0; }
.workspace-head p { margin: 0; color: #667086; }
.session-actions { display: flex; align-items: end; gap: 10px; }
.session-actions label { min-width: 210px; }
.workspace-nav { display: flex; gap: 8px; overflow-x: auto; padding: 5px 2px 14px; }
.workspace-nav button { flex: 0 0 auto; background: transparent; color: #525e74; border: 1px solid transparent; }
.workspace-nav button.active { color: #2145bd; background: #eaf0ff; border-color: #cad7ff; }
.panel { padding: clamp(20px, 4vw, 34px); margin-bottom: 18px; }
.panel h2 { margin: 5px 0 8px; }
.inline-form { grid-template-columns: minmax(180px, 1fr) minmax(160px, .7fr) auto; align-items: end; }
.stepper { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 4px 0 16px; }
.stepper span { min-width: 0; display: flex; align-items: center; gap: 7px; padding: 10px; border-radius: 12px; background: #e9edf4; color: #687286; font-size: 14px; }
.stepper b { display: grid; place-items: center; flex: 0 0 26px; width: 26px; height: 26px; border-radius: 50%; background: #cdd4df; }
.stepper span.active { color: #183ca8; background: #e3ebff; font-weight: 800; }
.stepper span.active b { color: white; background: #244bd6; }
.wizard-step > label { margin-top: 18px; }
.scenario-selector { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 16px 0 22px; }
.scenario-choice { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 12px; align-items: start; padding: 16px; color: #24355b; text-align: left; background: #f8faff; border: 1px solid #d6ddea; }
.scenario-choice:hover { background: #eef3ff; }
.scenario-choice.selected { color: #173bba; background: #eaf0ff; border-color: #315bd9; box-shadow: 0 0 0 2px rgba(49,91,217,.12); }
.scenario-choice:disabled { color: #6d7584; background: #f3f4f7; }
.scenario-choice strong { font-size: 17px; }
.scenario-choice small { grid-column: 1 / -1; color: #657085; font-weight: 500; line-height: 1.55; }
.scenario-state { border-radius: 999px; padding: 3px 8px; font-size: 12px; white-space: nowrap; }
.scenario-state.available { color: #14703b; background: #ddf5e7; }
.scenario-state.aggregate { color: #2145bd; background: #e2eaff; }
.scenario-state.planned { color: #687286; background: #e5e8ee; }
.resume-card { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 18px; padding: 16px 18px; border: 1px solid #b9c9fb; border-radius: 14px; background: #f3f6ff; }
.resume-card p { margin: 5px 0 0; color: #5a6680; }
.draft-save-status { margin: -10px 0 18px; color: #657085; font-size: 13px; text-align: right; }
.draft-save-status[data-tone="saving"] { color: #315bd9; }
.draft-save-status[data-tone="saved"] { color: #14703b; }
.draft-save-status[data-tone="dirty"], .draft-save-status[data-tone="error"] { color: #9a5d00; }
.scenario-readiness { margin: -4px 0 22px; padding: 18px; border: 1px solid #d9e0ed; border-radius: 14px; background: #fbfcff; }
.scenario-readiness h3 { margin: 0 0 12px; color: #24355b; }
.scenario-material-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.scenario-material-grid > div { padding: 14px; border-radius: 12px; background: white; border: 1px solid #e2e7f0; }
.scenario-material-grid ul { margin: 9px 0 0; padding-left: 20px; color: #5b6679; }
.scenario-material-grid li + li { margin-top: 7px; }
.first-use-guide { width: min(900px, calc(100% - 28px)); max-height: min(86vh, 820px); padding: 24px; border: 0; border-radius: 18px; color: #1c2434; box-shadow: 0 30px 80px rgba(20, 32, 68, .28); }
.first-use-guide::backdrop { background: rgba(19, 27, 49, .56); }
.first-use-guide-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.first-use-guide-head h2 { margin: 6px 0 0; }
.first-use-guide .text-button { padding: 7px 9px; color: #52617c; background: transparent; }
.first-use-scenario-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 18px 0; }
.first-use-scenario { padding: 14px; border: 1px solid #dfe4ed; border-radius: 12px; background: #f8faff; }
.first-use-scenario h3, .first-use-scenario p { margin: 0 0 7px; }
.first-use-scenario p:last-child { margin-bottom: 0; color: #657085; font-size: 13px; }
.comprehensive-panel { margin-top: 22px; padding-top: 22px; border-top: 1px solid #dfe4ed; }
.comprehensive-panel > h3 { margin: 24px 0 6px; color: #24355b; }
.comprehensive-progress { margin-top: 16px; padding: 14px 16px; border: 1px solid #d6def0; border-radius: 12px; background: #f8faff; }
.comprehensive-progress > div { display: flex; justify-content: space-between; gap: 12px; color: #31405d; }
.comprehensive-progress progress { width: 100%; height: 12px; margin-top: 10px; accent-color: #244bd6; }
.safe-boundary { margin-top: 20px; padding: 14px 16px; border-radius: 12px; color: #4f5e78; background: #f1f5ff; }
.safe-boundary p { margin: 6px 0; }
.choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; border: 0; padding: 0; margin: 18px 0; }
.choice-grid legend { grid-column: 1 / -1; font-weight: 700; margin-bottom: 5px; }
.choice-grid label { display: flex; align-items: center; gap: 9px; padding: 12px; border: 1px solid #d6dce7; border-radius: 10px; }
.choice-grid input { width: auto; }
.money-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.amount-unit { max-width: 190px; margin: 14px 0; }
.money-group-title { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin: 18px 0 9px; color: #35425a; }
.money-group-title span { color: #687286; font-size: 13px; }
.money-grid label { padding: 14px; border: 1px solid #dfe4ed; border-radius: 12px; }
.money-grid span { display: flex; align-items: center; gap: 7px; color: #657085; font-size: 13px; font-weight: 500; }
.money-grid span input { width: auto; }
.wizard-actions, .result-actions { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.result-utility-actions { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.result-utility-actions .text-button { padding-inline: 8px; color: #52617c; background: transparent; border-color: transparent; box-shadow: none; }
.report-download-note { margin: 9px 0 0; color: #657085; font-size: 12px; text-align: right; }
.field-hint { margin-top: -8px; color: #657085; font-size: 13px; }
.wizard-actions.end { justify-content: flex-end; }
.file-drop { margin: 18px 0 10px; padding: 20px; border: 2px dashed #b8c4db; border-radius: 13px; background: #f8faff; }
.item-list { display: grid; gap: 10px; margin-top: 15px; color: #5b6679; }
.item { padding: 14px; border: 1px solid #dfe4ed; border-radius: 12px; background: #fafbfe; }
.item h3, .item p { margin: 0 0 7px; overflow-wrap: anywhere; }
.item p:last-child { margin-bottom: 0; }
.item-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.action-feedback { margin-top: 8px; resize: vertical; }
.action-task-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
.action-task-fields label { display: grid; gap: 6px; color: #4f5e78; font-size: 13px; font-weight: 700; }
.action-task-fields label:nth-child(4), .action-task-fields label:nth-child(5) { grid-column: 1 / -1; }
.action-task-fields textarea { resize: vertical; }
.action-feedback-summary { color: #657085; font-size: 13px; }
.action-feedback-history { margin-top: 8px; color: #4b5568; font-size: 13px; }
.action-feedback-history summary { cursor: pointer; }
.action-feedback-history-body { margin-top: 8px; }
.action-feedback-history-list { margin: 0 0 8px; padding-left: 20px; }
.pill { display: inline-flex; border-radius: 999px; padding: 4px 9px; background: #e9efff; color: #2b4eae; font-size: 12px; font-weight: 800; }
.pill.high { background: #ffe8e8; color: #a2232f; }
.pill.medium { background: #fff2d4; color: #7e5300; }
.pill.low { background: #ddf5e7; color: #14703b; }
.result-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-top: 18px; }
.result-summary > article { padding: 16px; border-radius: 13px; background: #f1f5ff; }
.result-summary strong { display: block; margin-top: 6px; font-size: 20px; }
.result-version-panel { margin: 16px 0; padding: 16px; border: 1px solid #cbd7f8; border-radius: 13px; background: #f7f9ff; }
.result-version-controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)) auto; align-items: end; gap: 10px; }
.result-version-controls label { color: #4f5e78; font-size: 13px; font-weight: 700; }
.result-version-controls select { margin-top: 6px; }
.result-version-panel .field-hint { margin: 10px 0 0; }
.report-version-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
.history-version-list { display: grid; gap: 8px; margin-top: 12px; padding-top: 12px; border-top: 1px dashed #cfd7e6; }
.report-section { padding: 18px; background: white; }
.report-section > .item-head h3 { color: #24355b; }
.decision-evidence { grid-column: 1 / -1; margin-top: 8px; padding-top: 18px; border-top: 1px solid #dfe4ed; }
.decision-evidence h3 { margin: 0 0 10px; color: #24355b; }
.evidence-grid, .scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 10px; }
.sensitivity-evidence .evidence-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.scenario-card { padding: 13px; border: 1px solid #dfe4ed; border-top: 4px solid #6d7b98; border-radius: 10px; background: #f8faff; }
.scenario-card.baseline { border-top-color: #244bd6; }
.scenario-card.conservative { border-top-color: #b52a35; }
.scenario-card.improvement { border-top-color: #168353; }
.cash-window-card { padding: 13px; border: 1px solid #dfe4ed; border-top: 4px solid #245be0; border-radius: 10px; background: #f8faff; }
.cash-window-card.window-60 { border-top-color: #4670d8; }
.cash-window-card.window-90 { border-top-color: #6f89c8; }
.cash-window-card span, .scenario-card span, .sensitivity-card span { color: #5d687e; font-size: 13px; font-weight: 800; }
.cash-window-card strong, .scenario-card strong, .sensitivity-card strong { display: block; margin: 7px 0; color: #1d2d50; font-size: 17px; }
.cash-window-card p, .scenario-card p, .sensitivity-card p { margin: 6px 0 0; color: #657085; font-size: 13px; line-height: 1.55; }
.sensitivity-card { padding: 13px; border: 1px solid #dfe4ed; border-top: 4px solid #8a57c7; border-radius: 10px; background: #fbf9ff; }
.margin-metric-evidence .evidence-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.margin-metric-card { padding: 13px; border: 1px solid #dfe4ed; border-top: 4px solid #244bd6; border-radius: 10px; background: #f8faff; }
.margin-metric-card.direction-down { border-top-color: #b52a35; }
.margin-metric-card.direction-up { border-top-color: #168353; }
.margin-metric-card span { color: #5d687e; font-size: 13px; font-weight: 800; }
.margin-metric-card strong { display: block; margin: 7px 0; color: #1d2d50; font-size: 20px; }
.margin-metric-card p { margin: 6px 0 0; color: #657085; font-size: 13px; line-height: 1.55; }
.scenario-gap { margin: 12px 0 0; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.consent-note { margin: 12px 0 0; color: #687286; font-size: 13px; }
.operator-shell { padding-bottom: 32px; }
.compact-auth .intro-card h1 { font-size: clamp(30px, 4vw, 48px); }
.operator-view > h3 { margin: 26px 0 6px; }
.operator-flag-form { grid-template-columns: minmax(180px, 1fr) minmax(130px, .5fr) minmax(100px, auto) auto; margin: 20px 0 8px; }
.checkbox-label { display: flex; align-items: center; align-self: center; gap: 8px; padding-bottom: 11px; }
.platform-invitation-form { grid-template-columns: minmax(260px, 1fr) auto; max-width: 760px; margin-top: 20px; }
.invitation-result { max-width: 920px; margin-top: 16px; padding: 18px; border: 1px solid #cbd7f8; border-radius: 14px; background: #f7f9ff; }
.invitation-result > p { margin: 0 0 8px; }
.invitation-link-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 12px; margin-top: 14px; }
.checkbox-label input { width: auto; }
.compact-input { width: 86px; }

@media (max-width: 760px) {
  .topbar { position: static; align-items: flex-start; }
  .toplinks { align-items: flex-end; flex-direction: column; gap: 5px; }
  .boundary { max-width: 150px; text-align: right; }
  .app-shell { width: min(100% - 20px, 1120px); margin-top: 12px; }
  .auth-layout { grid-template-columns: 1fr; }
  .intro-card { padding: 28px 22px; }
  .intro-card h1 { font-size: 38px; }
  .workspace-head, .session-actions { align-items: stretch; flex-direction: column; }
  .session-actions label { min-width: 0; }
  .inline-form, .money-grid, .result-summary, .card-grid, .operator-flag-form, .scenario-selector, .scenario-material-grid, .first-use-scenario-list, .platform-invitation-form, .invitation-link-row, .result-version-controls, .report-version-comparison, .action-task-fields { grid-template-columns: 1fr; }
  .action-task-fields label:nth-child(4), .action-task-fields label:nth-child(5) { grid-column: auto; }
  .choice-grid { grid-template-columns: 1fr; }
  .money-group-title { align-items: flex-start; flex-direction: column; gap: 3px; }
  .evidence-grid, .scenario-grid, .sensitivity-evidence .evidence-grid, .margin-metric-evidence .evidence-grid { grid-template-columns: 1fr; }
  .stepper { gap: 5px; }
  .stepper span { justify-content: center; padding: 8px 4px; font-size: 0; }
  .stepper b { font-size: 13px; }
  .panel { padding: 20px 16px; }
  .wizard-actions button, .result-actions button, .result-utility-actions button { flex: 1 1 140px; }
  .resume-card { align-items: stretch; flex-direction: column; }
  .draft-save-status { text-align: left; }
  .first-use-guide { width: calc(100% - 16px); max-height: 92vh; padding: 18px 14px; }
  .report-download-note { text-align: left; }
  .checkbox-label { padding-bottom: 0; }
}