:root {
  --bg: #fefae0;
  --card: #ffffff;
  --ink: #263018;
  --muted: #5f684f;
  --border: #e1e6cf;
  --accent: #6e8b3d;
  --accent-strong: #4f6b24;
  --max: 1360px;
  --sticky-offset: 4.3rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.65;
}


a {
  color: var(--accent-strong);
  text-underline-offset: 0.15em;
}

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

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--bg) 90%, white);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 4rem;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
}

.brand img {
  width: 1.88rem;
  height: 1.88rem;
  border-radius: 0.45rem;
  box-shadow: 0 3px 12px -9px #223611;
}

.brand span {
  line-height: 1;
  letter-spacing: -0.01em;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.72rem;
  border-radius: 999px;
  color: #334224;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  background: transparent;
  transition: color 120ms ease, background-color 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.nav-list a:hover {
  color: #263517;
  background: #edf5db;
  border-color: #cddab1;
  transform: translateY(-1px);
}

.nav-list a:focus-visible {
  outline: none;
  border-color: #96ad6b;
  box-shadow: 0 0 0 3px #e6efd0;
}

.breadcrumb-wrap {
  margin-top: 0.92rem;
}

.breadcrumb-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  color: #566447;
  font-size: 0.9rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: #9fb08a;
  margin-right: 0.35rem;
}

.breadcrumb-item a {
  color: #4d632f;
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: #32471a;
  text-decoration: underline;
  text-decoration-color: #c4d59a;
}

.breadcrumb-item [aria-current="page"] {
  color: #2f3f21;
  font-weight: 600;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-block: 1.5rem 2rem;
}

.prose {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
}

.prose h1,
.prose h2,
.prose h3 {
  line-height: 1.25;
  margin-top: 1.35em;
}

.content-grid .prose h1 {
  margin-top: 0;
  margin-bottom: 0.7rem;
  font-size: clamp(2rem, 3.2vw, 2.85rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #223018;
  text-wrap: balance;
}

.content-grid .prose h1::after {
  content: "";
  display: block;
  width: 5.2rem;
  height: 0.28rem;
  margin-top: 0.62rem;
  border-radius: 999px;
  background: linear-gradient(90deg, #87a548 0%, #d4a373 100%);
}

.content-grid .prose h2 {
  margin-top: 1.55em;
  margin-bottom: 0.5rem;
  padding-left: 0.62rem;
  border-left: 0.24rem solid #c9dba1;
  font-size: clamp(1.35rem, 2.3vw, 1.8rem);
  color: #2a3a1d;
  letter-spacing: -0.01em;
}

.content-grid .prose h3 {
  margin-top: 1.25em;
  margin-bottom: 0.35rem;
  padding-left: 0.45rem;
  border-left: 0.16rem solid #dde8c1;
  font-size: clamp(1.1rem, 1.5vw, 1.3rem);
  color: #38482a;
}

.content-grid .prose :is(h1, h2, h3, h4, h5, h6) {
  scroll-margin-top: var(--sticky-offset);
}

.content-grid .prose :is(h2, h3):target {
  background: linear-gradient(90deg, #f7fbe9 0%, #ffffff 70%);
  border-radius: 0.35rem;
}

.content-grid .prose :is(h1, h2, h3) .header-anchor {
  color: inherit;
  text-decoration: none;
}

.content-grid .prose :is(h2, h3):hover .header-anchor {
  color: #4f6b24;
}

.content-grid .prose :is(h2, h3) .header-anchor::after {
  content: " #";
  color: #9cb27a;
  opacity: 0;
  font-size: 0.82em;
  transition: opacity 120ms ease;
}

.content-grid .prose :is(h2, h3):hover .header-anchor::after,
.content-grid .prose :is(h2, h3):focus-within .header-anchor::after,
.content-grid .prose :is(h2, h3):target .header-anchor::after {
  opacity: 1;
}

.content-grid .prose a:not(.header-anchor) {
  color: #3f5f19;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
  transition: color 120ms ease, text-decoration-color 120ms ease;
}

.content-grid .prose a:not(.header-anchor):hover {
  color: #2d4810;
  text-decoration-color: #d4a373;
}

.content-grid .prose a:not(.header-anchor):focus-visible {
  outline: 2px solid #a2b97a;
  outline-offset: 2px;
  border-radius: 3px;
}

.prose :is(h1, h2, h3, h4):first-child {
  margin-top: 0;
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.prose pre {
  overflow-x: auto;
  border-radius: 10px;
  padding: 0.9rem;
  border: 1px solid #d7dfbe;
  background: #f7fbe9;
  color: #243114;
}

pre[class*="language-"] {
  margin: 0;
  border-radius: 12px;
  border: 1px solid #d7dfbe;
  background: #f7fbe9;
  color: #243114;
}

code[class*="language-"],
pre[class*="language-"] {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

pre[class*="language-"] code[class*="language-"] {
  display: block;
  padding: 1rem;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: #70825a;
}

.token.punctuation {
  color: #4f5c3b;
}

.token.property,
.token.tag,
.token.constant,
.token.symbol,
.token.deleted {
  color: #b34b3f;
}

.token.boolean,
.token.number {
  color: #8d5f1d;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: #476b1f;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: #365b70;
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: #3556a6;
}

.token.function,
.token.class-name {
  color: #8b4f95;
}

.token.regex,
.token.important,
.token.variable {
  color: #a5483f;
}

.code-block-wrap {
  position: relative;
  margin: 1rem 0;
}

.code-block-wrap pre > code {
  display: block;
  padding-right: 4.6rem;
}

.code-copy-btn {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 2;
  border: 1px solid #b7c692;
  border-radius: 999px;
  background: #f0f6df;
  color: #2d3e1d;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  padding: 0.42rem 0.62rem;
  cursor: pointer;
}

.code-copy-btn:hover {
  background: #e4efc8;
}

.code-copy-btn:disabled {
  opacity: 0.75;
  cursor: default;
}

.content-grid .prose table {
  width: 100%;
  display: block;
  overflow-x: auto;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.05rem 0 1.25rem;
  border: 1px solid #d6dfc0;
  border-radius: 12px;
  background: #ffffff;
}

.content-grid .prose th,
.content-grid .prose td {
  padding: 0.66rem 0.78rem;
  text-align: left;
  border-bottom: 1px solid #e2e8d2;
  border-right: 1px solid #e2e8d2;
}

.content-grid .prose tr > *:last-child {
  border-right: none;
}

.content-grid .prose tbody tr:last-child td {
  border-bottom: none;
}

.content-grid .prose thead th {
  background: linear-gradient(180deg, #f6fbe8 0%, #edf5db 100%);
  color: #263a18;
  font-weight: 700;
}

.content-grid .prose tbody tr:nth-child(even) {
  background: #fbfdf4;
}

.content-grid .prose tbody tr:hover {
  background: #f1f7e1;
}

.content-grid .prose .contains-task-list {
  list-style: none;
  margin: 0.9rem 0 1.2rem;
  padding-left: 0;
}

.content-grid .prose .task-list-item {
  display: flex;
  align-items: flex-start;
  gap: 0.62rem;
  margin: 0 0 0.52rem;
  padding: 0.55rem 0.72rem;
  border: 1px solid #dae4c6;
  border-radius: 10px;
  background: #fafdf1;
}

.content-grid .prose .task-list-item input[type="checkbox"] {
  margin: 0.19rem 0 0;
  width: 1.03rem;
  height: 1.03rem;
  flex: 0 0 auto;
  accent-color: #6e8b3d;
  cursor: pointer;
}

.content-grid .prose .task-list-item :is(label, span, p) {
  margin: 0;
}

.content-grid .prose .task-list-item:has(input[type="checkbox"]:checked),
.content-grid .prose .task-list-item.is-checked {
  background: #edf5de;
  border-color: #c5d79f;
}

.content-grid .prose .task-list-item:has(input[type="checkbox"]:checked) :is(label, span, p),
.content-grid .prose .task-list-item.is-checked :is(label, span, p) {
  color: #4f6240;
  text-decoration: line-through;
  text-decoration-thickness: 0.08em;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0 2rem;
  color: var(--muted);
}

.landing-main {
  margin-block: 2.2rem 2.6rem;
}

.hero {
  background: linear-gradient(140deg, #ffffff 0%, #eef6dd 38%, #f4e4be 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(1.4rem, 3vw, 2.8rem);
  box-shadow: 0 20px 40px -32px #223611;
}

.hero-kicker {
  margin: 0;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent-strong);
  font-weight: 700;
}

.hero h1 {
  margin: 0.45rem 0 0;
  font-size: clamp(2rem, 3.8vw, 3.35rem);
  line-height: 1.1;
  max-width: 16ch;
}

.hero-lead {
  max-width: 62ch;
  color: #334026;
  margin: 1rem 0 0;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.35rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.7rem 1.05rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, #76983e 0%, #5c7d2f 100%);
  color: #f5fae8;
}

.btn-primary:hover {
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  border-color: #cfd9b5;
  color: #2f3d22;
}

.landing-grid {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.landing-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.1rem 1.2rem 1.25rem;
}

.landing-card h2 {
  margin-top: 0.75rem;
  margin-bottom: 0.35rem;
  line-height: 1.2;
}

.landing-card p {
  margin-top: 0;
  color: #465337;
}

.icon {
  width: 2.9rem;
  height: 2.9rem;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon svg {
  width: 1.45rem;
  height: 1.45rem;
  fill: #20340f;
}

.icon-fundamentals {
  background: linear-gradient(135deg, #c9ebb2 0%, #f3eca5 100%);
}

.icon-platforms {
  background: linear-gradient(135deg, #b7e2ff 0%, #c9c7ff 100%);
}

.card-cta {
  display: inline-block;
  font-weight: 700;
}

.quick-checks {
  margin-top: 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.15rem;
}

.quick-checks h2 {
  margin-top: 0;
}

.quick-checks pre {
  margin: 0;
  overflow-x: auto;
  border-radius: 10px;
  padding: 0.9rem;
  border: 1px solid #d7dfbe;
  background: #f7fbe9;
  color: #243114;
}

@media (prefers-color-scheme: dark) {
  pre[class*="language-"] {
    background: #1f2914;
    border-color: #445130;
    color: #ebf4d5;
  }

  .token.comment,
  .token.prolog,
  .token.doctype,
  .token.cdata {
    color: #98ad7b;
  }

  .token.punctuation {
    color: #d4dfc2;
  }

  .token.property,
  .token.tag,
  .token.constant,
  .token.symbol,
  .token.deleted {
    color: #f78879;
  }

  .token.boolean,
  .token.number {
    color: #f2b261;
  }

  .token.selector,
  .token.attr-name,
  .token.string,
  .token.char,
  .token.builtin,
  .token.inserted {
    color: #9bd269;
  }

  .token.operator,
  .token.entity,
  .token.url,
  .language-css .token.string,
  .style .token.string {
    color: #95d1f0;
  }

  .token.atrule,
  .token.attr-value,
  .token.keyword {
    color: #9ab7ff;
  }

  .token.function,
  .token.class-name {
    color: #e2a4ed;
  }

  .token.regex,
  .token.important,
  .token.variable {
    color: #ffa08d;
  }

  .code-copy-btn {
    background: #2f3c21;
    border-color: #5e7043;
    color: #e7f1d2;
  }

  .code-copy-btn:hover {
    background: #3a4a29;
  }
}

@media (max-width: 980px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

  .landing-grid {
    grid-template-columns: 1fr;
  }
}