:root {
  --bg: #f7f8fb;
  --panel: #ffffff;
  --ink: #162033;
  --muted: #647086;
  --line: #dbe1ea;
  --navy: #14213d;
  --green: #18a058;
  --green-soft: #e9f8ef;
  --amber: #f4a62a;
  --amber-soft: #fff5df;
  --blue: #2663ff;
  --blue-soft: #edf2ff;
  --danger: #c2410c;
  --shadow: 0 20px 50px rgba(20, 33, 61, .12);
  --radius: 8px;
  --shell: 1160px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.tool-shell {
  width: min(var(--shell), calc(100% - 32px));
  margin-inline: auto;
}

.tool-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(219, 225, 234, .9);
  background: rgba(247, 248, 251, .92);
  backdrop-filter: blur(16px);
}

.tool-nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.tool-brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 900;
}

.tool-brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--navy);
  color: #ffffff;
  letter-spacing: 0;
}

.tool-brand span span {
  display: block;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 760;
}

.tool-links {
  display: flex;
  align-items: center;
  gap: .4rem;
}

.tool-links a {
  color: #334155;
  text-decoration: none;
  font-weight: 780;
  padding: .6rem .8rem;
  border-radius: var(--radius);
}

.tool-links a:hover,
.tool-links a:focus-visible {
  background: #e9edf5;
}

.tool-links .primary-link {
  color: #ffffff;
  background: var(--navy);
}

.tool-page-main {
  padding: 28px 0 64px;
}

.tool-kicker {
  margin: 0 0 .6rem;
  color: var(--green);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.tool-h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(2rem, 4vw, 4.2rem);
  line-height: .98;
  letter-spacing: 0;
}

.tool-lede {
  margin: 1rem 0 0;
  max-width: 780px;
  color: var(--muted);
  font-size: 1.05rem;
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
  gap: 18px;
  align-items: start;
  margin-top: 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel-pad { padding: 20px; }

.panel-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 18px;
}

.panel-title h2,
.section-title h2,
.guide-card h2,
.article-block h2 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: 0;
}

.panel-title p,
.section-title p {
  margin: .45rem 0 0;
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  min-height: 30px;
  padding: .3rem .55rem;
  border-radius: var(--radius);
  color: #075437;
  background: var(--green-soft);
  border: 1px solid #c8edd9;
  font-size: .82rem;
  font-weight: 850;
  white-space: nowrap;
}

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

.field {
  display: grid;
  gap: .35rem;
}

.field span {
  color: #344054;
  font-size: .84rem;
  font-weight: 820;
}

.field input,
.field select,
.search-box input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  padding: .72rem .8rem;
  outline: none;
}

.field input:focus,
.field select:focus,
.search-box input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(38, 99, 255, .14);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.tool-button {
  min-height: 46px;
  border: 0;
  border-radius: var(--radius);
  padding: .72rem 1rem;
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
}

.tool-button.primary {
  color: #ffffff;
  background: var(--navy);
}

.tool-button.secondary {
  color: var(--navy);
  background: #e9edf5;
}

.tool-button.ghost {
  color: var(--navy);
  background: #ffffff;
  border: 1px solid var(--line);
}

.tool-button:hover,
.tool-button:focus-visible {
  transform: translateY(-1px);
}

.results-panel {
  position: sticky;
  top: 88px;
}

.decision {
  display: grid;
  gap: 14px;
}

.decision-box {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #ffffff, #f3f6fb);
}

.decision-status {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: .35rem .65rem;
  border-radius: var(--radius);
  color: #075437;
  background: var(--green-soft);
  font-weight: 950;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: .8rem;
}

.decision-status.watch {
  color: #7a4a00;
  background: var(--amber-soft);
}

.decision-status.pass {
  color: var(--danger);
  background: #fff0eb;
}

.decision-box h2 {
  margin: .85rem 0 .4rem;
  font-size: 2.15rem;
  letter-spacing: 0;
}

.decision-box p {
  margin: 0;
  color: var(--muted);
}

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

.metric {
  min-height: 92px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 820;
}

.metric strong {
  display: block;
  margin-top: .25rem;
  font-size: 1.35rem;
}

.rule-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rule-list li {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  padding: .65rem;
  border-radius: var(--radius);
  background: #f8fafc;
  color: #344054;
}

.rule-dot {
  width: 26px;
  height: 20px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  color: #ffffff;
  background: var(--green);
  font-size: .68rem;
  font-weight: 900;
}

.rule-dot.fail { background: var(--danger); }
.rule-dot.warn { background: var(--amber); }

.tool-section {
  margin-top: 28px;
}

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 14px;
}

.search-box {
  width: min(420px, 100%);
}

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

.guide-card {
  display: grid;
  gap: 12px;
  min-height: 100%;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 12px 28px rgba(20, 33, 61, .08);
}

.guide-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.guide-rank {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 950;
}

.guide-card p {
  margin: 0;
  color: var(--muted);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: .25rem .5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: #334155;
  font-size: .78rem;
  font-weight: 780;
}

.detail-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 1.05rem;
  color: #344054;
}

.guide-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: auto;
}

.guide-actions .tool-button {
  min-height: 40px;
  padding: .55rem .65rem;
  font-size: .86rem;
}

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

.article-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.article-block p,
.article-block li {
  color: var(--muted);
}

.article-block ul {
  margin: .75rem 0 0;
  padding-left: 1.05rem;
}

.note-strip {
  margin-top: 24px;
  padding: 14px 16px;
  border: 1px solid #ffe2a7;
  border-radius: var(--radius);
  background: var(--amber-soft);
  color: #5d3b00;
  font-weight: 740;
}

.tool-footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #ffffff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner a {
  color: var(--navy);
  font-weight: 850;
  text-decoration: none;
}

.empty-state {
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: #ffffff;
}

@media (max-width: 960px) {
  .workbench,
  .guide-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .results-panel {
    position: static;
  }

  .section-title {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 700px) {
  .tool-nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .tool-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .tool-links a {
    white-space: nowrap;
  }

  .form-grid,
  .metric-grid,
  .guide-actions {
    grid-template-columns: 1fr;
  }

  .panel-title {
    flex-direction: column;
  }

  .tool-h1 {
    font-size: 2rem;
    line-height: 1.05;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}