:root {
  --ink: #14211f;
  --muted: #5b6661;
  --paper: #fbfaf5;
  --panel: #ffffff;
  --line: #d9ded7;
  --deep: #12312b;
  --green: #148466;
  --teal: #e4f4ef;
  --blue: #1f5f88;
  --blue-soft: #e6f0f7;
  --amber: #946315;
  --amber-soft: #fff3d6;
  --red: #9f372d;
  --shadow: 0 18px 48px rgba(18, 49, 43, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 20;
  background: var(--deep);
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 245, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--deep);
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 6px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--teal);
}

.hero-section,
.page-title,
.content {
  max-width: 1180px;
  margin: 0 auto;
  padding: 56px 22px;
}

.hero-section {
  min-height: 470px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 36px;
  align-items: center;
}

.hero-copy h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.96;
  letter-spacing: 0;
}

.page-title {
  padding-block: 42px;
}

.page-title h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede,
.page-title p {
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  font-size: 12px;
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 7px;
  border: 1px solid var(--deep);
  text-decoration: none;
  font-weight: 800;
}

.button.primary {
  background: var(--deep);
  color: #fff;
}

.button.secondary {
  background: transparent;
  color: var(--deep);
}

.status-board,
.tool-card,
.formula-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.status-board {
  padding: 22px;
}

.status-list {
  margin: 0;
}

.status-list div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.status-list div:last-child {
  border-bottom: 0;
}

.status-list dt {
  color: var(--muted);
}

.status-list dd {
  margin: 0;
  text-align: right;
  font-weight: 800;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.status.ok {
  color: var(--green);
  background: var(--teal);
}

.status.warn {
  color: var(--amber);
  background: var(--amber-soft);
}

.status.neutral {
  color: var(--blue);
  background: var(--blue-soft);
}

.band {
  background: #eef3ef;
  border-block: 1px solid var(--line);
}

.band .content {
  padding-block: 54px;
}

.content h2,
.tool-card h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.05;
  letter-spacing: 0;
}

.content p {
  color: var(--muted);
}

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

.route-card,
.info-card,
.question-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.route-card {
  min-height: 150px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-decoration: none;
}

.route-card:hover {
  border-color: var(--green);
  transform: translateY(-1px);
}

.route-card strong,
.info-card strong {
  font-size: 18px;
}

.route-card span,
.info-card span {
  color: var(--muted);
}

.split,
.status-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 28px;
  align-items: start;
}

.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding: 12px 14px 12px 34px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 20px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.source-grid a {
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  text-decoration: none;
  font-weight: 700;
}

.notice {
  padding-block: 22px;
}

.notice,
.formula-box {
  border-left: 5px solid var(--green);
}

.tool-card {
  padding: 22px;
}

.tool-card.compact {
  margin-top: -24px;
  position: relative;
  z-index: 2;
}

.tool-heading,
.question-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

label,
.wide-label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-weight: 700;
  font-size: 14px;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  min-height: 42px;
  padding: 8px 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input:focus,
select:focus,
summary:focus {
  outline: 3px solid rgba(20, 132, 102, 0.24);
  outline-offset: 2px;
}

.result-panel {
  margin-top: 18px;
  padding: 18px;
  border-radius: 8px;
  background: #f1f6f4;
  border: 1px solid var(--line);
}

.score-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.score-summary div,
.scenario-results div {
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.score-summary span,
.scenario-results span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.score-summary strong {
  font-size: 24px;
}

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

.tool-note,
.caption,
.fine-print {
  font-size: 13px;
}

.question-list {
  display: grid;
  gap: 16px;
}

.question-card {
  padding: 20px;
}

.question-card h3 {
  margin: 0;
  font-size: 23px;
  line-height: 1.2;
}

.question-card h4 {
  margin: 0 0 8px;
}

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

.trap {
  padding: 12px;
  border-radius: 8px;
  background: var(--amber-soft);
  color: var(--ink);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
}

th {
  background: #f2f0e8;
  font-size: 13px;
}

tr:last-child td {
  border-bottom: 0;
}

td code {
  display: inline-block;
  margin: 2px 4px 2px 0;
  padding: 3px 6px;
  border-radius: 5px;
  background: #eef3ef;
  color: var(--deep);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.compact-section {
  padding-top: 28px;
}

.credit-result span,
.credit-result small {
  display: block;
}

.credit-result strong {
  display: block;
  margin-top: 6px;
  font-size: 28px;
}

.info-card {
  padding: 18px;
  display: grid;
  gap: 8px;
}

.formula-box {
  padding: 20px;
}

.formula-box code {
  display: block;
  margin: 12px 0;
  padding: 12px;
  border-radius: 7px;
  background: #f2f0e8;
  white-space: normal;
  overflow-wrap: anywhere;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

details p {
  margin-bottom: 0;
}

.site-footer {
  background: var(--deep);
  color: #f5f5ed;
}

.footer-grid {
  max-width: 1180px;
  margin: 0 auto;
  padding: 38px 22px;
  display: grid;
  grid-template-columns: 1.4fr repeat(3, minmax(0, 0.8fr));
  gap: 22px;
}

.site-footer a {
  display: block;
  margin-top: 8px;
  color: #d9f2e9;
  text-decoration: none;
}

.site-footer p {
  color: #c8d9d3;
}

@media (max-width: 920px) {
  .header-inner,
  .hero-section,
  .split,
  .status-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    display: grid;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .card-grid,
  .score-grid,
  .scenario-results,
  .source-grid,
  .mini-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero-section,
  .page-title,
  .content {
    padding-inline: 16px;
  }

  .hero-copy h1,
  .page-title h1 {
    font-size: 40px;
  }

  .brand {
    min-width: 0;
  }

  .site-nav a {
    font-size: 13px;
    padding: 7px 8px;
  }

  .tool-heading,
  .question-head {
    display: grid;
  }
}