:root {
  --ink: #18212f;
  --muted: #647084;
  --line: #d8dee8;
  --paper: #fbfcfe;
  --panel: #ffffff;
  --accent: #126f63;
  --accent-2: #d85f3d;
  --accent-3: #3157a4;
  --soft-green: #e8f4f1;
  --soft-coral: #fff0ea;
  --soft-blue: #eef3ff;
  --shadow: 0 18px 50px rgba(24, 33, 47, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(251, 252, 254, 0.92);
  border-bottom: 1px solid rgba(216, 222, 232, 0.8);
  backdrop-filter: blur(14px);
}

.brand,
.nav-links,
.hero-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  font-size: 0.88rem;
  letter-spacing: 0;
}

.nav-links {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(56px, 8vw, 104px) clamp(20px, 5vw, 72px);
  background:
    linear-gradient(120deg, rgba(232, 244, 241, 0.92), rgba(251, 252, 254, 0.45) 48%),
    url("https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1800&q=82") center / cover;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow,
.section-label,
.card-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 860px;
  margin-bottom: 20px;
  font-size: clamp(2.7rem, 8vw, 6.8rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.12rem;
  line-height: 1.25;
}

.hero-text {
  max-width: 690px;
  color: #3f4a5c;
  font-size: 1.08rem;
}

.hero-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-weight: 800;
}

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

.button.secondary {
  background: rgba(255, 255, 255, 0.72);
}

.hero-panel {
  padding: 26px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.signal-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.signal-row span,
.score-grid span,
.timeline span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.score-grid div {
  padding: 16px 12px;
  background: var(--soft-blue);
  border-radius: 8px;
}

.score-grid strong {
  display: block;
  margin-top: 6px;
  font-size: 1.7rem;
}

.checklist {
  display: grid;
  gap: 10px;
}

.checklist label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #344056;
  font-weight: 600;
}

.section {
  padding: clamp(58px, 8vw, 104px) clamp(20px, 5vw, 72px);
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(280px, 1.2fr);
  gap: 32px;
  align-items: start;
  background: #fff;
  border-block: 1px solid var(--line);
}

.intro-band p:last-child {
  color: var(--muted);
  font-size: 1.05rem;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(280px, 1.1fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 30px;
}

.section-heading.compact {
  display: block;
  max-width: 820px;
}

.practice-grid,
.agent-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.practice-card,
.agent-card {
  min-height: 230px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.practice-card:nth-child(2n) {
  background: var(--soft-green);
}

.practice-card:nth-child(3n) {
  background: var(--soft-coral);
}

.practice-card p,
.agent-card p,
.timeline p {
  color: var(--muted);
}

.template-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 16px;
}

.template-list {
  display: grid;
  align-content: start;
  gap: 8px;
}

.template-tab,
.copy-button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.template-tab {
  text-align: left;
  padding: 0 14px;
}

.template-tab.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.template-preview {
  overflow: hidden;
  background: #101722;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.template-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 12px 16px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.copy-button {
  min-width: 76px;
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
}

pre {
  min-height: 430px;
  max-height: 580px;
  margin: 0;
  padding: 22px;
  overflow: auto;
  color: #e8eef8;
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.55;
}

.agent-card ul {
  margin: 18px 0 0;
  padding-left: 20px;
  color: #485469;
}

.cadence-section {
  background: #fff;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.timeline div {
  min-height: 250px;
  padding: 24px;
  border-right: 1px solid var(--line);
  background: #fff;
}

.timeline div:nth-child(2) {
  background: var(--soft-blue);
}

.timeline div:nth-child(3) {
  background: var(--soft-green);
}

.timeline div:last-child {
  border-right: 0;
  background: var(--soft-coral);
}

.timeline h3 {
  margin-top: 20px;
}

.site-footer {
  padding: 28px clamp(20px, 5vw, 72px);
  color: #fff;
  background: var(--ink);
}

.site-footer p {
  max-width: 760px;
  margin: 0;
}

@media (max-width: 980px) {
  .hero,
  .intro-band,
  .section-heading,
  .template-layout {
    grid-template-columns: 1fr;
  }

  .practice-grid,
  .agent-grid,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline div:nth-child(2) {
    border-right: 0;
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    min-height: auto;
    padding-top: 48px;
  }

  .score-grid,
  .practice-grid,
  .agent-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .timeline div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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