@font-face {
  font-family: 'Geist Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('/fonts/geist-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Geist Mono Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('/fonts/geist-mono-latin.woff2') format('woff2');
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --paper: #faf9f6;
  --surface: #ffffff;
  --code: #f4f2ee;
  --ink: #1a1a18;
  --muted: #6b6b66;
  --faint: #a8a59c;
  --line: #e7e5e0;
  --accent: #d97706;
  --accent-fill: #f59e0b;
  --accent-soft: #fdf3e3;
  --sans:
    'Geist Variable', 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial,
    sans-serif;
  --mono:
    'Geist Mono Variable', 'JetBrains Mono', ui-monospace, SFMono-Regular, 'SF Mono', Menlo,
    Consolas, monospace;
}

html {
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.5;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
.wrap {
  width: 100%;
  max-width: 660px;
  margin: 0 auto;
  padding: 0 24px;
}

/* header: brand left, actions right */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
}
.brand img {
  width: 32px;
  height: 32px;
}
.brand span {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav {
  display: flex;
  align-items: center;
  gap: 20px;
}
.navlink {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s ease;
}
.navlink:hover {
  color: var(--ink);
}
.btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-fill);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.15s ease;
}
.btn-sm:hover {
  background: var(--accent);
}
.btn-sm svg {
  width: 15px;
  height: 15px;
}

main {
  flex: 1;
  padding: 56px 0;
}
main.center {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-bottom: 22px;
}
h1 {
  font-size: clamp(40px, 9vw, 68px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.02;
}
/* Hero typewriter: the cycling word + its caret. The caret rides on `.typing`, which
   hero-type.js adds only when it animates — so JS-off / reduced-motion render a plain
   static word with no caret. */
.type {
  display: inline-block;
  vertical-align: baseline;
}
.type.typing {
  border-right: 0.06em solid currentColor;
  padding-right: 0.04em;
  animation: caret 1s steps(1) infinite;
}
@keyframes caret {
  50% {
    border-color: transparent;
  }
}
/* Visually hidden but available to screen readers (a stable "Google." so the churn isn't read). */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}
.pitch {
  margin-top: 26px;
  font-size: clamp(16px, 3vw, 19px);
  color: var(--muted);
  max-width: 500px;
  line-height: 1.6;
}

.cta-row {
  margin-top: 38px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  align-items: center;
}
.cta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--accent-fill);
  color: var(--ink);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 24px;
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.15s ease;
}
.cta:hover {
  background: var(--accent);
}
.cta svg {
  width: 17px;
  height: 17px;
}
.ghost {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.15s ease;
}
.ghost:hover {
  color: var(--ink);
}

/* features as hairline-separated rows */
.features {
  margin-top: 80px;
  border-top: 1px solid var(--line);
}
.feature {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.feature .idx {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--faint);
  padding-top: 2px;
}
.feature h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 5px;
  letter-spacing: -0.01em;
}
.feature p {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.6;
}
a.feature {
  text-decoration: none;
  color: inherit;
  transition: background 0.15s ease;
}
a.feature:hover {
  background: #f4f2ee;
}
a.feature h3 {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
a.feature h3::after {
  content: '→';
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.15s ease;
}
a.feature:hover h3::after {
  opacity: 1;
  transform: translateX(0);
}

.protect {
  margin-top: 72px;
  padding-top: 8px;
}
.protect > h2 {
  font-size: clamp(24px, 4.5vw, 30px);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
}
.protect-grid {
  display: grid;
  gap: 24px;
}
@media (min-width: 640px) {
  .protect-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }
}
.protect-item h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 7px;
}
.protect-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}
.protect-link {
  display: inline-block;
  margin-top: 28px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
.protect-link:hover {
  color: var(--ink);
}

footer {
  padding: 28px 0;
  color: var(--faint);
  font-size: 13px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
footer a {
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  transition: color 0.15s ease;
}
footer a:hover {
  color: var(--ink);
}
footer .sep {
  color: var(--line);
}

/* ── developer guide ──────────────────────────────────────────── */
.guide h1 {
  font-size: clamp(30px, 6vw, 44px);
}
.lead {
  margin-top: 22px;
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.6;
}
.sec {
  margin-top: 56px;
}
.sec > h2:not(.sec-label) {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.sec > p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.6;
  max-width: 560px;
}
.sec-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400; /* pinned so a promoted <h2 class="sec-label"> stays identical (h2 defaults to bold) */
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 14px;
}

.flow {
  list-style: none;
  counter-reset: f;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}
.flow li {
  counter-increment: f;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--muted);
}
.flow li::before {
  content: counter(f, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}
.flow li b {
  color: var(--ink);
  font-weight: 600;
}

.step {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.step:first-of-type {
  border-top: 1px solid var(--line);
}
.step .n {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}
.step h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 4px 0 8px;
}
.step p {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.6;
  max-width: 560px;
}

pre {
  margin-top: 14px;
  background: var(--code);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  overflow-x: auto;
}
pre code {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink);
  white-space: pre;
}
code.k {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 6px;
}

.checklist {
  list-style: none;
  margin-top: 8px;
  border-top: 1px solid var(--line);
}
.checklist li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink);
}
.checklist li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 600;
}
.checklist li span {
  color: var(--muted);
}

.note {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.65;
}
.note b {
  color: var(--ink);
  font-weight: 600;
}

.back {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.back:hover {
  color: var(--ink);
}

/* subtle entrance */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
main.center > * {
  animation: rise 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}
main.center > .kicker {
  animation-delay: 0.02s;
}
main.center > h1 {
  animation-delay: 0.06s;
}
main.center > .pitch {
  animation-delay: 0.12s;
}
main.center > .cta-row {
  animation-delay: 0.18s;
}
main.center > .features {
  animation-delay: 0.24s;
}
main.center > .protect {
  animation-delay: 0.3s;
}
@media (prefers-reduced-motion: reduce) {
  main.center > * {
    animation: none;
  }
}