:root {
  --ink: #0f1d1a;
  --muted: #344744;
  --accent: #0b6f5c;
  --accent-2: #e07a5f;

  --surface: rgba(255, 255, 255, 0.85);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --surface-soft: rgba(255, 255, 255, 0.7);

  --border: rgba(15, 29, 26, 0.08);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  --elev-2: 0 12px 30px rgba(15, 29, 26, 0.12);

  --page-gutter: 32px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background: linear-gradient(140deg, #f7efe5 0%, #e5f4f7 55%, #f9f5e9 100%);
}

p {
  text-align: left;
}

.page {
  min-height: 100vh;
  padding: 24px var(--page-gutter) 28px;
  display: flex;
  flex-direction: column;
  gap: 48px;
  position: relative;
  overflow: clip;
}

.page::before,
.page::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle at top, rgba(11, 111, 92, 0.2), transparent 70%);
  pointer-events: none;
}

.page::before {
  top: -180px;
  right: -140px;
}

.page::after {
  bottom: -220px;
  left: -160px;
  background: radial-gradient(circle at top, rgba(224, 122, 95, 0.22), transparent 70%);
}

.page > * {
  position: relative;
  z-index: 1;
}

/* ------------------------------ public header ----------------------- */
.m-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 0 calc(-1 * var(--page-gutter));
  padding: 14px var(--page-gutter);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.m-nav.is-scrolled {
  background: var(--surface);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(15, 29, 26, 0.1);
}

.m-nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--ink);
  text-decoration: none;
}

.m-nav-logo img {
  width: 32px;
  height: 32px;
}

.m-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.m-nav-link {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  color: var(--muted);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.m-nav-link:hover {
  color: var(--ink);
  background: rgba(15, 29, 26, 0.05);
}

.m-nav-cta {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.m-nav-cta:hover {
  filter: brightness(0.97);
}

#quick-start {
  scroll-margin-top: 80px;
}

.hero {
  display: grid;
  gap: 48px;
}

.hero-card {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  box-shadow: var(--elev-2);
  animation: riseIn 0.7s ease-out;
  animation-fill-mode: both;
}

.hero-card h1 {
  margin: 12px 0;
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.1;
}

.hero-card > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.hero h1 {
  margin: 16px 0 12px;
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1.05;
}

.hero p {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  width: fit-content;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(11, 111, 92, 0.12);
  color: var(--accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  font-weight: 600;
}

.pill {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  font-size: 13px;
  color: var(--ink);
  margin: 6px 6px 0 0;
}

.cards-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.cards-grid-bottom {
  min-height: 100svh;
  padding: clamp(32px, 8vh, 96px) 0;
  align-content: center;
}

.card-item {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  box-shadow: var(--elev-2);
  animation: riseIn 0.7s ease-out;
  animation-fill-mode: both;
  display: flex;
  flex-direction: column;
}

.card-item h2 {
  margin: 16px 0 12px;
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.1;
}

.card-item h3 {
  margin: 12px 0 12px;
  font-size: 20px;
  color: var(--ink);
}

.card-item > p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.card-item ul {
  margin: 0 0 12px;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.card-item li {
  margin: 0 0 6px;
}

.card-item .cta {
  margin-top: auto;
}

.cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  width: fit-content;
  align-self: flex-start;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 24px rgba(11, 111, 92, 0.28);
}

.btn.ghost {
  border: 1px solid rgba(11, 111, 92, 0.2);
  color: var(--accent);
  background: #fff;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.center {
  justify-content: center;
  align-items: center;
  text-align: center;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}

.code {
  background: #0f1d1a;
  color: #e8f4ef;
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 12px 0 0;
  overflow-x: auto;
  white-space: pre;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
}

.callout {
  margin-top: 14px;
  border-left: 3px solid var(--accent);
  background: rgba(11, 111, 92, 0.06);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
}

.card-item code,
.callout code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: rgba(15, 29, 26, 0.06);
  padding: 1px 5px;
  border-radius: 5px;
}

.doc-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.mini {
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
}

.mini h3 {
  margin: 0 0 8px;
  font-size: 15px;
  color: var(--ink);
}

@media (min-width: 900px) {
  .cards-grid-bottom {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}