:root {
  color-scheme: light;
  --ink: #202631;
  --muted: #647084;
  --line: #d8dee8;
  --panel: #ffffff;
  --soft: #f4f7fb;
  --accent: #b43f2e;
  --accent-dark: #7c2519;
  --cool: #0b6b60;
  --warn: #7b4b10;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f7f9fc;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

a {
  color: var(--accent-dark);
}

button,
input,
textarea {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid #bbc5d3;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.site-header,
.site-footer,
main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink);
  font-weight: 900;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
  font-weight: 700;
}

.hero {
  padding: 46px 0 26px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.24;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.1rem, 3.6rem, 3.6rem);
}

h2 {
  font-size: 22px;
}

.lead {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.bench-shell {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.bench-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.status-badge {
  min-width: 96px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
  text-align: center;
}

.status-badge.is-running {
  background: #fff0e9;
  color: var(--accent-dark);
}

.status-badge.is-complete {
  background: #e8f6ed;
  color: #225c35;
}

.notice {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px solid #d6bf91;
  border-radius: 8px;
  background: #fff8e8;
  color: #563b12;
}

.notice p {
  margin: 0;
}

.control-grid {
  display: grid;
  grid-template-columns: minmax(260px, 360px) 1fr;
  gap: 14px;
  margin-top: 16px;
}

.mode-box,
.action-box,
.meter-panel,
.result-panel,
.content-grid article,
.comment-placeholder {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.mode-box {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 14px;
}

.mode-box legend {
  padding: 0 4px;
  font-weight: 900;
}

.mode-box label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
}

.action-box {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px;
}

.action-box p {
  flex-basis: 100%;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.primary-action {
  min-width: 132px;
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.stage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, 0.8fr);
  gap: 14px;
  margin-top: 14px;
}

.canvas-panel {
  min-width: 0;
}

#stormCanvas,
#resultChart {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #10151f;
}

.progress-wrap {
  height: 12px;
  margin-top: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edf4;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--cool), var(--accent));
}

.meter-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
}

.metric-card,
.result-grid div {
  min-width: 0;
  padding: 12px;
  border-radius: 7px;
  background: var(--soft);
}

.metric-card span,
.result-grid span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
}

.metric-card strong,
.result-grid strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
  font-size: 22px;
  line-height: 1.2;
}

.result-panel {
  margin-top: 14px;
  padding: 16px;
}

.result-panel.is-complete {
  border-color: #9dcbb2;
  box-shadow: 0 0 0 3px rgb(37 119 76 / 10%);
}

.result-hero p {
  margin: 10px 0 0;
  color: var(--muted);
}

.conclusion-card {
  margin-top: 14px;
  padding: 18px;
  border: 1px solid #d6bf91;
  border-radius: 8px;
  background: #fff8e8;
}

.conclusion-card span {
  display: block;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 900;
}

.conclusion-card strong {
  display: block;
  margin-top: 4px;
  font-size: clamp(1.5rem, 2.65rem, 2.65rem);
  line-height: 1.15;
}

.conclusion-card p {
  margin: 8px 0 0;
  color: #563b12;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.chart-wrap {
  margin-top: 14px;
}

#copyText {
  width: 100%;
  margin-top: 14px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  resize: vertical;
}

.result-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.result-actions button {
  padding: 0 14px;
}

.result-help {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
}

.result-help summary {
  cursor: pointer;
  font-weight: 900;
}

.result-help p {
  margin: 8px 0 0;
  color: var(--muted);
}

.next-tests {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid #bad7d2;
  border-radius: 8px;
  background: #edf8f6;
}

.next-tests h3 {
  font-size: 16px;
}

.next-tests ul {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding-left: 1.25em;
}

.next-tests li {
  color: #1f554c;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.bench-ad,
.related-panel,
.comment-block,
.return-links a,
.content-grid article,
.comment-placeholder {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.bench-ad,
.related-panel,
.comment-block,
.content-grid article,
.comment-placeholder {
  padding: 18px;
}

.bench-ad,
.related-panel,
.comment-block {
  margin-top: 18px;
}

.ad-label {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.content-grid p,
.comment-placeholder p {
  margin: 0;
}

.link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
}

.link-list a,
.return-links a {
  display: grid;
  gap: 4px;
  padding: 14px;
  color: var(--ink);
  text-decoration: none;
}

.link-list a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.link-list span,
.return-links span,
.return-links small,
.comment-note {
  color: var(--muted);
}

.comment-note {
  margin-top: 0;
}

.return-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.comment-placeholder {
  margin-top: 18px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 26px 0 38px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .site-header,
  .bench-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .control-grid,
  .stage-grid,
  .content-grid,
  .link-list,
  .return-links {
    grid-template-columns: 1fr;
  }

  .meter-panel,
  .result-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .site-header,
  .site-footer,
  main {
    width: min(100% - 20px, 1180px);
  }

  .bench-shell {
    padding: 12px;
  }

  .meter-panel,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .action-box button {
    flex: 1 1 130px;
  }

  h1 {
    font-size: 2.05rem;
  }

  .conclusion-card strong {
    font-size: 1.5rem;
  }
}