:root {
  --bg: #f1eee8;
  --bg-strong: #e6dfd3;
  --surface: rgba(255, 255, 255, 0.6);
  --surface-strong: rgba(255, 255, 255, 0.82);
  --ink: #171512;
  --muted: #5c5750;
  --line: rgba(23, 21, 18, 0.12);
  --accent: #1e1b18;
  --accent-soft: #cbbda5;
  --shadow: 0 24px 80px rgba(29, 24, 19, 0.1);
  --radius-lg: 32px;
  --radius-md: 18px;
  --page-max: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(203, 189, 165, 0.7), transparent 32%),
    linear-gradient(180deg, #f7f3ed 0%, var(--bg) 100%);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  min-height: 100vh;
}

.topbar,
main,
.footer {
  width: min(calc(100% - 32px), var(--page-max));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0 18px;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
}

.brandmark {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topnav {
  display: flex;
  gap: 24px;
  font-size: 0.95rem;
  color: var(--muted);
}

.topnav a:hover,
.topnav a:focus-visible {
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.75fr);
  gap: 28px;
  padding: 28px 0 40px;
}

.hero-copy,
.hero-panel,
.info-block,
.library-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-copy {
  padding: clamp(28px, 4vw, 52px);
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(245, 240, 232, 0.45)),
    linear-gradient(120deg, rgba(203, 189, 165, 0.4), transparent 55%);
}

.eyebrow,
.block-kicker {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1,
.section-head h2,
.info-block h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(2.15rem, 4.6vw, 3.8rem);
}

.hero-text,
.section-copy,
.info-block p,
.panel-note,
#results-count,
.footer {
  color: var(--muted);
}

.hero-text {
  max-width: 48ch;
  margin: 22px 0 0;
  font-size: 1.08rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #f6f1e8;
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.5);
}

.hero-panel {
  padding: 28px;
  display: grid;
  gap: 16px;
  align-content: start;
}

.hero-stat {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.stat-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.hero-stat strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.2rem, 3vw, 3rem);
  line-height: 1;
}

.panel-note {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.info-block {
  padding: 28px;
}

.info-block h2 {
  font-size: clamp(1.55rem, 2.2vw, 2.25rem);
  margin-bottom: 18px;
}

.info-block p {
  margin: 0 0 14px;
  line-height: 1.65;
}

.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.link-list a {
  display: inline-flex;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease, color 160ms ease;
}

.link-list a:hover,
.link-list a:focus-visible {
  color: var(--ink);
  border-color: currentColor;
}

.library-section {
  margin-bottom: 48px;
  padding: clamp(20px, 3vw, 34px);
  background: var(--surface-strong);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.section-head h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.5rem);
  max-width: 12ch;
}

.section-copy {
  margin: 0;
  line-height: 1.65;
}

.toolbar {
  position: sticky;
  top: 88px;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0 18px;
  background: linear-gradient(180deg, rgba(255, 251, 246, 0.95), rgba(255, 251, 246, 0.7));
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-chip {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
  color: var(--muted);
  border-radius: 999px;
  min-height: 42px;
  padding: 0 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.filter-chip:hover,
.filter-chip:focus-visible,
.filter-chip.is-active {
  background: var(--accent);
  color: #f6f1e8;
  transform: translateY(-1px);
}

.search-wrap {
  min-width: min(100%, 440px);
}

.search-wrap input {
  width: 100%;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  font: inherit;
}

.results-meta {
  margin-bottom: 8px;
}

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

.tutorial-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.tutorial-row:hover,
.tutorial-row:focus-within {
  transform: translateY(-2px);
  border-color: rgba(23, 21, 18, 0.2);
  background: rgba(255, 255, 255, 0.98);
}

.row-main {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.row-main h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.08rem;
  line-height: 1.15;
}

.model-pill {
  display: inline-flex;
  min-width: 48px;
  justify-content: center;
  padding: 7px 12px;
  border-radius: 999px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--bg-strong);
  white-space: nowrap;
}

.row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.row-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.94rem;
  font-weight: 600;
}

.row-link:hover,
.row-link:focus-visible {
  border-color: rgba(23, 21, 18, 0.35);
}

.row-link-primary {
  background: var(--accent);
  color: #f6f1e8;
  border-color: var(--accent);
}

.empty-state {
  padding: 26px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--line);
  color: var(--muted);
}

.footer {
  padding: 0 0 28px;
  font-size: 0.9rem;
}

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

.reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: rise-in 700ms cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.hero-panel.reveal {
  animation-delay: 120ms;
}

.info-grid.reveal {
  animation-delay: 180ms;
}

.library-section.reveal {
  animation-delay: 240ms;
}

@keyframes rise-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero,
  .info-grid,
  .section-head {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: auto;
  }

  .toolbar {
    top: 76px;
  }
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 18px;
  }

  .topnav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 12px;
  }

  .hero h1 {
    max-width: 10ch;
    font-size: clamp(1.95rem, 7.2vw, 2.9rem);
  }

  .tutorial-row {
    grid-template-columns: 1fr;
  }

  .row-main {
    align-items: flex-start;
  }

  .row-actions {
    justify-content: flex-start;
  }

  .toolbar {
    position: static;
    padding-top: 0;
    background: transparent;
  }
}