:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #5b6675;
  --line: #d7dee8;
  --paper: #f9fbfc;
  --surface: #ffffff;
  --surface-quiet: #f1f5f8;
  --surface-tint: #edf7f5;
  --action: #12645f;
  --action-strong: #0d4e4a;
  --blue: #155e8a;
  --gold: #8a5a12;
  --gold-soft: #fff5dd;
  --red-soft: #fff1ef;
  --shadow: 0 12px 32px rgba(23, 32, 42, .08);
  --radius: 8px;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

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

a {
  color: var(--blue);
}

a:hover,
a:focus {
  color: var(--action-strong);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid #0b76d1;
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 1px solid var(--line);
  background: rgba(249, 251, 252, .97);
  backdrop-filter: blur(10px);
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 14px;
  font-size: .92rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
}

.nav-links a[aria-current="page"] {
  color: var(--ink);
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 42px 20px 76px;
}

.hero,
.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, .48fr);
  gap: var(--space-6);
  align-items: start;
  margin-bottom: var(--space-6);
}

.eyebrow,
.tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: #e1f1ed;
  color: var(--action-strong);
  padding: 4px 10px;
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: 0;
  margin-bottom: var(--space-3);
}

h1,
h2,
h3 {
  line-height: 1.12;
  margin: 0 0 var(--space-3);
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.25rem, 4.4vw, 4rem);
  max-width: 850px;
}

h2 {
  font-size: clamp(1.45rem, 2.6vw, 2.05rem);
  margin-top: var(--space-7);
}

h3 {
  font-size: 1.08rem;
}

p {
  margin: 0 0 var(--space-4);
}

.lead {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 820px;
}

.actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: var(--space-5) 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  background: var(--action);
  border-color: var(--action);
  color: #f7fbfa;
}

.button:hover,
.button:focus {
  border-color: var(--action-strong);
  text-decoration: none;
}

.summary-panel,
.action-panel,
.limits,
.notice,
.video-frame,
.transcript {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-5);
  box-shadow: var(--shadow);
}

.summary-panel {
  background: var(--surface-tint);
}

.summary-panel h2,
.action-panel h2,
.limits h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.task-flow,
.compact-list,
.check-list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
  display: grid;
  gap: 10px;
}

.task-flow {
  counter-reset: flow;
}

.task-flow li {
  counter-increment: flow;
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: var(--space-4);
}

.task-flow li::before {
  content: counter(flow);
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--action);
  color: #f7fbfa;
  font-weight: 850;
}

.task-flow strong,
.compact-list strong,
.check-list strong {
  display: block;
  margin-bottom: 3px;
}

.compact-list li,
.check-list li {
  border-top: 1px solid var(--line);
  padding: var(--space-3) 0 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(300px, .55fr);
  gap: var(--space-6);
  align-items: start;
}

.task-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0 var(--space-6);
  font-size: .94rem;
  background: var(--surface);
}

.task-table th,
.task-table td {
  border-bottom: 1px solid var(--line);
  padding: 11px 9px;
  text-align: left;
  vertical-align: top;
}

.task-table th {
  background: var(--surface-quiet);
  font-weight: 850;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.step,
.status-label {
  color: var(--action-strong);
  font-weight: 850;
  font-size: .86rem;
}

.guide-step {
  display: grid;
  grid-template-columns: minmax(0, .58fr) minmax(280px, .42fr);
  gap: var(--space-5);
  align-items: start;
  border-top: 1px solid var(--line);
  padding: var(--space-6) 0;
}

.guide-step figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.guide-step img,
.screenshot-card img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--surface-quiet);
}

.guide-step figcaption {
  padding: var(--space-3) var(--space-4);
  color: var(--muted);
  font-size: .92rem;
}

.link-list {
  padding-left: 1.1rem;
}

.link-list li {
  margin-bottom: 8px;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

.link-row strong {
  min-width: 12rem;
}

.accordion-stack {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  background: var(--surface);
}

summary {
  cursor: pointer;
  font-weight: 850;
}

.limits,
.notice {
  background: var(--gold-soft);
  color: #49340f;
  box-shadow: none;
}

.limits {
  background: var(--surface-quiet);
  color: var(--muted);
}

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

.inline-code,
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .92em;
}

.video-frame {
  padding: var(--space-3);
  margin: var(--space-5) 0;
}

.video-frame video {
  display: block;
  width: 100%;
  border-radius: 6px;
  background: var(--surface-quiet);
}

.transcript {
  box-shadow: none;
}

@media (max-width: 860px) {
  .nav,
  .hero,
  .page-hero,
  .split,
  .guide-step {
    grid-template-columns: 1fr;
  }

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

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

  .actions,
  .button-row {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .task-flow li {
    grid-template-columns: 1fr;
  }

  .task-flow li::before {
    margin-bottom: var(--space-1);
  }
}