.stress-layout {
  height: calc(100% - 122px);
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(380px, .38fr);
  grid-template-rows: minmax(0, 1fr) 102px;
  gap: 18px;
}

.scenario-surface,
.exposure-rail,
.model-strip {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.scenario-surface {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(31, 53, 70, .055);
}

.surface-head {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 17px 24px;
  border-bottom: 1px solid var(--line);
}

.surface-head h2,
.exposure-rail h2 {
  margin: 6px 0 0;
  font-family: var(--font-title);
  font-size: 21px;
  letter-spacing: 0;
}

.surface-body {
  min-height: 0;
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
}

.impact-summary {
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, #fbfdff 0%, #f7fafc 100%);
}

.summary-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 34px;
  color: var(--muted);
  font: 800 8px/1 var(--mono);
  text-transform: uppercase;
}

.summary-kicker i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 5px rgba(49, 71, 255, .08);
}

.impact-summary > small {
  color: var(--muted);
  font: 800 9px/1.2 var(--mono);
  text-transform: uppercase;
}

.impact-summary h3 {
  margin: 14px 0 0;
  font-family: var(--font-title);
  font-size: 48px;
  line-height: 1;
  letter-spacing: 0;
}

.impact-summary .loss {
  display: block;
  margin-top: 11px;
  color: var(--red);
  font: 800 13px/1.2 var(--mono);
}

.value-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.value-compare div { padding: 16px 0; }
.value-compare div + div { padding-left: 18px; border-left: 1px solid var(--line); }
.value-compare small { color: var(--muted); font: 800 8px/1.2 var(--mono); text-transform: uppercase; }
.value-compare strong { display: block; margin-top: 7px; font-size: 13px; }

.severity { margin-top: 24px; }
.severity-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.severity-head span { color: var(--muted); font: 800 8px/1 var(--mono); text-transform: uppercase; }
.severity-head b { font-size: 10px; }
.severity-track { height: 6px; overflow: hidden; border-radius: 1px; background: #e6edf2; }
.severity-track i { display: block; width: var(--size); height: 100%; background: linear-gradient(90deg, #3147ff 0%, #7b74dc 48%, #dd5261 100%); transition: width .28s ease; }

.impact-summary p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.model-stamp {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.model-stamp img { width: 19px; height: 19px; }
.model-stamp span { color: var(--muted); font-size: 9px; line-height: 1.45; }
.model-stamp strong { display: block; margin-bottom: 2px; color: var(--ink); font-size: 10px; }

.plot-area {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  padding: 27px 28px 20px;
}

.plot-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.plot-head h3 { margin: 7px 0 0; font-family: var(--font-title); font-size: 19px; letter-spacing: 0; }
.plot-legend { display: flex; align-items: center; gap: 18px; color: var(--muted); font: 800 8px/1 var(--mono); text-transform: uppercase; }
.plot-legend span { display: inline-flex; align-items: center; gap: 7px; }
.plot-legend i { display: inline-block; width: 22px; height: 2px; }
.legend-line { background: linear-gradient(90deg, var(--blue), var(--red)); }
.legend-baseline { border-top: 1px dashed #7f8c98; }

.plot-canvas {
  position: relative;
  min-height: 0;
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid #dfe8ee;
  background: linear-gradient(180deg, #fff 0%, #fbfdfe 100%);
}

.plot-canvas::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(49, 71, 255, .018), transparent 22%, transparent 78%, rgba(221, 82, 97, .018));
}

.plot-canvas svg { position: relative; z-index: 1; display: block; width: 100%; height: 100%; }
.grid-line { stroke: #e1e9ee; stroke-width: 1; }
.grid-label { fill: #80909d; font: 800 9px var(--mono); }
.x-guide { stroke: #e8eef2; stroke-width: 1; stroke-dasharray: 3 7; }
.axis-label { fill: #71808d; font: 800 10px var(--mono); }
.baseline { stroke: #798793; stroke-width: 1.2; stroke-dasharray: 6 7; }
.baseline-label { fill: #667581; font: 800 9px var(--mono); }
.curve-fill { fill: url(#stressFill); }
.curve-line { fill: none; stroke: url(#stressStroke); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.static-point { fill: #fff; stroke: #9dacb8; stroke-width: 2; }
.point-label { fill: #5e6d79; font: 800 9px var(--mono); }
.active-guide { stroke: #3147ff; stroke-width: 1.5; stroke-dasharray: 4 6; transition: x1 .28s ease, x2 .28s ease; }
.active-halo { fill: rgba(49, 71, 255, .12); transition: cx .28s ease, cy .28s ease; }
.active-marker { fill: #3147ff; stroke: #fff; stroke-width: 4; filter: url(#pointShadow); transition: cx .28s ease, cy .28s ease, fill .28s ease; }

.plot-tooltip {
  position: absolute;
  z-index: 3;
  min-width: 132px;
  padding: 11px 12px;
  border: 1px solid #cbd6ff;
  border-radius: 6px;
  background: rgba(255, 255, 255, .97);
  box-shadow: 0 14px 34px rgba(25, 45, 60, .12);
  transform: translate(16px, 16px);
  pointer-events: none;
  transition: left .28s ease, top .28s ease;
}

.plot-tooltip.flip { transform: translate(calc(-100% - 16px), 16px); }
.plot-tooltip small { display: block; color: var(--muted); font: 800 8px/1 var(--mono); text-transform: uppercase; }
.plot-tooltip strong { display: block; margin-top: 7px; font-family: var(--font-title); font-size: 15px; }
.plot-tooltip span { display: block; margin-top: 5px; color: var(--red); font: 800 9px/1 var(--mono); }

.impact-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 15px;
  border-top: 1px solid var(--line);
}

.impact-cell { padding: 14px 13px 0; border-right: 1px solid var(--line); }
.impact-cell:first-child { padding-left: 0; }
.impact-cell:last-child { padding-right: 0; border-right: 0; }
.impact-cell strong { display: flex; justify-content: space-between; gap: 8px; font-size: 10px; }
.impact-cell small { display: block; margin-top: 5px; color: var(--muted); font-size: 8px; }
.impact-cell .stress-meter { height: 5px; margin-top: 9px; }

.exposure-rail {
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(31, 53, 70, .04);
}

.exposure-rail > header { padding: 21px 22px 18px; border-bottom: 1px solid var(--line); }
.exposure-rail > header p { margin: 7px 0 0; color: var(--muted); font-size: 10px; line-height: 1.45; }
.rail-body { min-height: 0; overflow: auto; }
.rail-section { padding: 19px 21px; border-bottom: 1px solid var(--line); }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.section-title h3 { margin: 0; color: var(--muted); font: 800 8px/1 var(--mono); text-transform: uppercase; }
.section-title span { color: var(--blue); font: 800 7px/1 var(--mono); text-transform: uppercase; }
.asset-result { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: center; gap: 10px; margin-top: 13px; }
.asset-result i { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 6px; background: #eef2ff; color: var(--blue); font: 800 8px/1 var(--mono); font-style: normal; }
.asset-result strong { display: block; font-size: 10px; }
.asset-result small { display: block; margin-top: 4px; color: var(--muted); font-size: 8px; }
.asset-result b { font: 800 9px/1 var(--mono); }

.review-note { display: grid; grid-template-columns: 20px minmax(0, 1fr); gap: 10px; padding: 17px 20px; border-top: 1px solid #eadfcf; background: #fffaf2; }
.review-note img { width: 18px; height: 18px; }
.review-note strong { font-size: 10px; }
.review-note p { margin: 5px 0 0; color: #78684f; font-size: 9px; line-height: 1.45; }

.model-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 260px repeat(3, minmax(0, 1fr));
  align-items: center;
  overflow: hidden;
}

.model-title,
.model-item { height: 100%; display: flex; align-items: center; gap: 12px; padding: 0 22px; border-right: 1px solid var(--line); }
.model-item:last-child { border-right: 0; }
.model-title strong { display: block; font-family: var(--font-title); font-size: 15px; }
.model-title small,
.model-item small { display: block; margin-top: 5px; color: var(--muted); font-size: 8px; }
.model-item img { width: 19px; height: 19px; }
.model-item strong { display: block; font-size: 10px; }

@media (min-width: 2200px) {
  .stress-layout { grid-template-columns: minmax(0, 1.64fr) 470px; grid-template-rows: minmax(0, 1fr) 124px; gap: 22px; height: calc(100% - 148px); }
  .surface-head { min-height: 96px; padding: 22px 31px; }
  .surface-head h2, .exposure-rail h2 { font-size: 26px; }
  .surface-body { grid-template-columns: 410px minmax(0, 1fr); }
  .impact-summary { padding: 38px; }
  .summary-kicker { margin-bottom: 42px; font-size: 9px; }
  .impact-summary h3 { font-size: 60px; }
  .impact-summary .loss { font-size: 15px; }
  .value-compare strong { font-size: 15px; }
  .impact-summary p { font-size: 12px; }
  .model-stamp strong { font-size: 12px; }
  .model-stamp span { font-size: 10px; }
  .plot-area { padding: 34px 36px 26px; }
  .plot-head h3 { font-size: 23px; }
  .plot-legend { font-size: 9px; }
  .impact-cell { padding: 17px 16px 0; }
  .impact-cell strong { font-size: 12px; }
  .impact-cell small { font-size: 10px; }
  .exposure-rail > header { padding: 27px 28px 23px; }
  .exposure-rail > header p { font-size: 12px; }
  .rail-section { padding: 24px 27px; }
  .asset-result { grid-template-columns: 40px minmax(0, 1fr) auto; gap: 12px; margin-top: 17px; }
  .asset-result i { width: 38px; height: 38px; font-size: 10px; }
  .asset-result strong { font-size: 12px; }
  .asset-result small { font-size: 10px; }
  .asset-result b { font-size: 11px; }
  .review-note { padding: 21px 26px; }
  .review-note strong { font-size: 12px; }
  .review-note p { font-size: 10px; }
  .model-strip { grid-template-columns: 330px repeat(3, minmax(0, 1fr)); }
  .model-title, .model-item { padding: 0 28px; }
  .model-title strong { font-size: 18px; }
  .model-item strong { font-size: 12px; }
  .model-title small, .model-item small { font-size: 10px; }
}

@media (max-width: 900px) {
  html,
  body { min-width: 0; height: auto; min-height: 100%; }
  body { overflow-x: hidden; overflow-y: auto; }
  .workspace { width: 100%; height: auto; min-height: 100vh; display: block; }
  .content { min-height: 0; padding: 20px 16px 32px; overflow: visible; }
  .page-head { min-height: 0; display: grid; align-items: start; gap: 18px; margin-bottom: 20px; }
  .head-status { width: max-content; max-width: 100%; }
  .stress-layout { height: auto; display: grid; grid-template-columns: minmax(0, 1fr); grid-template-rows: auto; gap: 20px; }
  .scenario-surface,
  .exposure-rail,
  .model-strip { min-width: 0; }
  .surface-head { display: grid; align-items: start; gap: 16px; padding: 20px; }
  .scenario-control { width: 100%; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .scenario-control button { min-width: 0; padding: 0 8px; }
  .scenario-control button:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
  .surface-body { display: grid; grid-template-columns: minmax(0, 1fr); }
  .impact-summary { min-width: 0; padding: 26px 24px; border-right: 0; border-bottom: 1px solid var(--line); }
  .summary-kicker { margin-bottom: 24px; }
  .plot-area { min-width: 0; padding: 24px 20px 20px; }
  .plot-head { align-items: flex-start; flex-direction: column; gap: 14px; }
  .plot-legend { flex-wrap: wrap; }
  .plot-canvas { height: 360px; min-height: 360px; }
  .impact-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .impact-cell { padding: 14px 12px; border-bottom: 1px solid var(--line); }
  .impact-cell:nth-child(2) { border-right: 0; }
  .impact-cell:nth-child(n+3) { border-bottom: 0; }
  .impact-cell:nth-child(3) { padding-left: 0; }
  .exposure-rail { display: block; overflow: hidden; }
  .rail-body { overflow: visible; }
  .model-strip { grid-column: auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: hidden; }
  .model-title,
  .model-item { min-height: 82px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
  .model-item:nth-child(2) { border-right: 0; }
  .model-item:nth-child(n+3) { border-bottom: 0; }
}

@media (max-width: 520px) {
  .content { padding: 18px 12px 28px; }
  .page-head h1 { font-size: 32px; line-height: 1.05; }
  .page-head p { font-size: 12px; }
  .head-status { width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .head-stat { min-width: 0; }
  .surface-head { padding: 18px 16px; }
  .scenario-control { gap: 4px; padding: 3px; }
  .scenario-control button { height: 32px; font-size: 9px; }
  .impact-summary { padding: 24px 18px; }
  .impact-summary h3 { font-size: 40px; }
  .impact-summary .loss { font-size: 11px; }
  .plot-area { padding: 20px 14px 16px; }
  .plot-canvas { height: 300px; min-height: 300px; }
  .plot-legend { gap: 10px; font-size: 7px; }
  .plot-tooltip { min-width: 108px; padding: 9px; }
  .plot-tooltip strong { font-size: 13px; }
  .impact-strip { grid-template-columns: minmax(0, 1fr); }
  .impact-cell,
  .impact-cell:nth-child(n+3) { padding: 12px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .impact-cell:last-child { border-bottom: 0; }
  .exposure-rail > header { padding: 20px 18px; }
  .rail-section { padding: 18px; }
  .review-note { padding: 16px 18px; }
  .model-strip { grid-template-columns: minmax(0, 1fr); }
  .model-title,
  .model-item,
  .model-item:nth-child(n+3) { min-height: 72px; border-right: 0; border-bottom: 1px solid var(--line); }
  .model-item:last-child { border-bottom: 0; }
}