:root {
  color-scheme: light;
  --ink: #1e2528;
  --muted: #657073;
  --soft: #f5f2ea;
  --paper: #fffdf7;
  --panel: #ffffff;
  --line: #d9ded6;
  --teal: #0f766e;
  --teal-dark: #104f4a;
  --cedar: #8a4b2c;
  --moss: #596c39;
  --sun: #c78a18;
  --sky: #dce9ec;
  --shadow: 0 14px 40px rgba(39, 48, 44, 0.1);
  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;
  background: var(--soft);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
}

a {
  color: var(--teal-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--cedar);
}

button,
input,
select,
textarea {
  font: inherit;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-150%);
  background: var(--ink);
  color: white;
  padding: 10px 14px;
  border-radius: 6px;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 28px 22px;
  background: #e6ece7;
  border-right: 1px solid var(--line);
  overflow-y: auto;
}

.brand-block {
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(30, 37, 40, 0.14);
}

.brand-block h1,
.section-header h2,
.topbar h2 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

.brand-block h1 {
  max-width: 10ch;
  font-size: 2.3rem;
}

.brand-block p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.eyebrow,
.card-kicker {
  margin: 0 0 8px;
  color: var(--cedar);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.nav-list {
  display: grid;
  gap: 6px;
  margin-top: 22px;
}

.nav-link {
  display: block;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 7px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  background: var(--paper);
  color: var(--teal-dark);
}

.content {
  min-width: 0;
}

.section {
  padding: 42px clamp(22px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 16px;
}

.intro-section {
  background: var(--paper);
}

.section:nth-of-type(3n) {
  background: #f7f8f4;
}

.section:nth-of-type(4n) {
  background: #eef6f3;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 360px);
  gap: 24px;
  align-items: end;
  margin-bottom: 28px;
}

.topbar h2 {
  max-width: 780px;
  font-size: 2.8rem;
}

.search-wrap {
  display: grid;
  gap: 7px;
}

.search-wrap label,
.calc-form label {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
}

.search-wrap input,
.calc-form input,
.calc-form select,
.calc-form textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid #c7d0c8;
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
}

.search-wrap input:focus,
.calc-form input:focus,
.calc-form select:focus,
.calc-form textarea:focus {
  outline: 3px solid rgba(15, 118, 110, 0.2);
  border-color: var(--teal);
}

.home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) repeat(2, minmax(180px, 0.55fr));
  gap: 16px;
}

.callout-card,
.metric-card,
.source-card,
.topic-card,
.tool-card,
.document-card,
.note-card,
.note-composer {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.callout-card {
  padding: 24px;
}

.callout-card h3 {
  max-width: 680px;
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.15;
}

.callout-card p {
  max-width: 720px;
  color: var(--muted);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.pill-row span {
  border: 1px solid #ccd8d0;
  border-radius: 999px;
  padding: 6px 10px;
  background: #f7fbf8;
  color: #394946;
  font-size: 0.86rem;
  font-weight: 750;
}

.metric-card {
  display: grid;
  gap: 12px;
  align-content: start;
  min-height: 220px;
  padding: 20px;
}

.metric {
  color: var(--teal);
  font-size: 3.1rem;
  font-weight: 850;
  line-height: 1;
}

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

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 420px);
  gap: 24px;
  align-items: end;
  margin-bottom: 22px;
}

.section-header.compact {
  margin-top: 30px;
}

.section-header h2 {
  font-size: 2rem;
}

.section-header > p {
  margin: 0;
  color: var(--muted);
}

.card-grid,
.topic-grid,
.document-grid,
.calculator-grid {
  display: grid;
  gap: 16px;
}

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

.topic-grid,
.calculator-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.document-grid {
  grid-template-columns: minmax(0, 1fr);
}

.source-card,
.topic-card,
.tool-card,
.note-card {
  padding: 18px;
}

.source-card,
.topic-card {
  min-height: 210px;
}

.source-card h3,
.topic-card h3,
.tool-card h3,
.note-card h3,
.note-composer h3,
.document-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  line-height: 1.2;
}

.source-card p,
.topic-card p,
.note-card p,
.document-card p,
.fine-print {
  color: var(--muted);
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.link-row a,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid #b9c8c3;
  border-radius: 7px;
  padding: 8px 11px;
  background: #f8fbf9;
  color: var(--teal-dark);
  font-weight: 800;
  text-decoration: none;
}

.link-row a:hover {
  background: #edf6f4;
}

.primary-button {
  width: fit-content;
  background: var(--teal);
  color: #fff;
  border-color: var(--teal);
  cursor: pointer;
}

.primary-button:hover {
  background: var(--teal-dark);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 0;
}

.tag-row span {
  border-radius: 999px;
  padding: 4px 8px;
  background: var(--sky);
  color: #284346;
  font-size: 0.76rem;
  font-weight: 800;
}

.check-list {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 18px;
  color: #3d4b4d;
}

.check-list li::before {
  position: absolute;
  left: 0;
  content: "";
  width: 7px;
  height: 7px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--sun);
}

.stacked-groups {
  display: grid;
  gap: 22px;
}

.source-group {
  display: grid;
  gap: 12px;
}

.source-group h3 {
  margin: 0;
  color: var(--moss);
  font-size: 1.05rem;
}

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

.tool-card {
  display: grid;
  gap: 14px;
  align-content: start;
  min-height: 360px;
}

.wide-tool {
  grid-column: 1 / -1;
}

.tool-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.calc-form {
  display: grid;
  gap: 12px;
}

.calc-form.split {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.calc-form textarea {
  resize: vertical;
}

.result-box {
  display: block;
  min-height: 88px;
  border-left: 4px solid var(--teal);
  border-radius: 7px;
  padding: 14px 16px;
  background: #f3faf8;
  color: #273231;
}

.result-box strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1.25rem;
}

.document-card {
  display: grid;
  grid-template-columns: minmax(180px, 320px) minmax(0, 1fr);
  gap: 22px;
  overflow: hidden;
}

.document-card.no-preview {
  grid-template-columns: 1fr;
}

.document-preview {
  min-height: 320px;
  background: #dfe8e4;
}

.document-card.no-preview .document-preview {
  min-height: auto;
  padding: 18px 22px;
  background: #edf4f1;
}

.document-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.document-body {
  padding: 22px 22px 22px 0;
}

.document-card.no-preview .document-body {
  padding: 0 22px 22px;
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.doc-meta span {
  border-radius: 999px;
  padding: 5px 9px;
  background: #f4efe5;
  color: var(--cedar);
  font-size: 0.78rem;
  font-weight: 850;
}

.notes-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: start;
}

.notes-list {
  display: grid;
  gap: 14px;
}

.note-card {
  min-height: 150px;
}

.note-composer {
  position: sticky;
  top: 24px;
  padding: 18px;
}

.fine-print {
  margin-bottom: 0;
  font-size: 0.86rem;
}

.empty-state {
  padding: 24px;
  border: 1px dashed #b8c6bc;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.64);
  color: var(--muted);
}

.hidden {
  display: none !important;
}

@media (max-width: 1080px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    padding: 20px;
  }

  .brand-block h1 {
    max-width: none;
  }

  .nav-list {
    display: flex;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .nav-link {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .home-grid,
  .topbar,
  .section-header,
  .notes-layout {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .group-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .note-composer {
    position: static;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 30px 16px;
  }

  .topbar h2 {
    font-size: 2.05rem;
  }

  .section-header h2 {
    font-size: 1.62rem;
  }

  .card-grid,
  .group-grid,
  .topic-grid,
  .calculator-grid,
  .calc-form.split,
  .document-card {
    grid-template-columns: 1fr;
  }

  .document-preview {
    min-height: 280px;
  }

  .document-body {
    padding: 0 18px 20px;
  }

  .document-card.no-preview .document-body {
    padding: 0 18px 20px;
  }
}