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

:root {
  --paper: #faf7f2;
  --paper-deep: #f1eadf;
  --white: #ffffff;
  --ink: #171724;
  --ink-soft: #4c4d5b;
  --ink-muted: #747684;
  --line: rgba(23, 23, 36, 0.14);
  --line-strong: rgba(23, 23, 36, 0.24);
  --red: #a7352a;
  --blue: #245780;
  --green: #246b50;
  --amber: #8a5a1f;
  --code-bg: #191923;
  --max: 1120px;
  --narrow: 760px;
  --sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Crimson Pro", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 247, 242, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0;
  color: var(--ink);
  text-decoration: none;
}

.brand strong {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand span {
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
}

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

.nav-cta {
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 8px 11px;
  background: var(--white);
  color: var(--red) !important;
}

.hero {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 82px 28px 70px;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  gap: 54px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  font-family: var(--mono);
  color: var(--red);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  line-height: 1.04;
  color: var(--ink);
}

h1 {
  max-width: 780px;
  font-family: var(--serif);
  font-size: 4.2rem;
  font-weight: 700;
}

h2 {
  font-family: var(--serif);
  font-size: 2.55rem;
  font-weight: 700;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.25;
}

.lead {
  margin: 24px 0 0;
  max-width: 690px;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 16px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  text-decoration: none;
  background: #2a2a3a;
}

.button.secondary {
  background: transparent;
  color: var(--ink);
}

.button.secondary:hover {
  background: rgba(23, 23, 36, 0.06);
}

.proof-panel {
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 24px 70px rgba(23, 23, 36, 0.10);
  overflow: hidden;
}

.hero-evidence {
  display: grid;
  gap: 18px;
}

.terminal-snippet {
  border: 1px solid rgba(244, 240, 232, 0.12);
  border-radius: 8px;
  background: var(--code-bg);
  color: #f4f0e8;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(23, 23, 36, 0.18);
}

.terminal-snippet pre {
  margin: 0;
  padding: 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
}

.terminal-ok {
  color: #95d5b2;
}

.terminal-warn {
  color: #f4d35e;
}

.terminal-dim {
  color: #aaa8b8;
}

.proof-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.proof-strip-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.proof-pair {
  display: grid;
  gap: 3px;
  font-family: var(--mono);
  font-size: 0.74rem;
}

.proof-before {
  color: var(--ink-muted);
  text-decoration: line-through;
}

.proof-after {
  color: var(--green);
  font-weight: 700;
}

.questions-band {
  background: var(--ink);
  color: var(--white);
  padding: 62px 28px;
}

.questions-band h2 {
  color: var(--white);
}

.questions-band .section-kicker {
  color: #f4d35e;
}

.questions-grid {
  max-width: var(--max);
  margin: 30px auto 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.question-item {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 18px;
  color: #f4f0e8;
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.25;
}

.panel-head {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-muted);
  text-transform: uppercase;
}

.panel-body {
  padding: 18px;
}

.evidence-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.evidence-row:last-child {
  border-bottom: 0;
}

.evidence-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-muted);
  text-transform: uppercase;
}

.evidence-value {
  margin: 0;
  color: var(--ink-soft);
}

.status-ok {
  color: var(--green);
  font-weight: 700;
}

.section {
  padding: 72px 28px;
}

.section.alt {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.narrow {
  max-width: var(--narrow);
}

.section-kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
}

.section-lead {
  margin: 18px 0 0;
  max-width: 780px;
  color: var(--ink-soft);
  font-size: 1.04rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

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

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 22px;
}

.card strong {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
}

.card p {
  margin: 0;
  color: var(--ink-soft);
}

.card .meta {
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
}

.steps {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.step-num {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.76rem;
}

.step p {
  margin: 6px 0 0;
  color: var(--ink-soft);
}

.list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.list li {
  padding-left: 22px;
  position: relative;
  color: var(--ink-soft);
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--green);
}

.code-block {
  margin: 28px 0 0;
  padding: 20px;
  overflow-x: auto;
  border-radius: 8px;
  background: var(--code-bg);
  color: #f4f0e8;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.65;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 44px;
  align-items: start;
}

.founder {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 28px;
}

.founder img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
  max-width: 560px;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  min-height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0 14px;
  font: inherit;
  background: var(--white);
}

.lead-form textarea,
.lead-form .full {
  grid-column: 1 / -1;
}

.lead-form textarea {
  min-height: 92px;
  padding-top: 11px;
  resize: vertical;
}

.lead-form button {
  grid-column: 1 / -1;
  min-height: 46px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  padding: 0 16px;
  background: var(--ink);
  color: var(--white);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.privacy-note {
  max-width: 560px;
  margin: 10px 0 0;
  color: var(--ink-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.form-note {
  min-height: 24px;
  margin: 8px 0 0;
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.evidence-table {
  width: 100%;
  margin-top: 28px;
  border-collapse: collapse;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 0.94rem;
}

.evidence-table th,
.evidence-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.evidence-table th {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: var(--paper);
}

.evidence-table tr:last-child td {
  border-bottom: 0;
}

.callout {
  margin-top: 28px;
  border-left: 4px solid var(--green);
  background: var(--paper);
  padding: 18px 20px;
  color: var(--ink-soft);
}

.callout strong {
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink-muted);
  font-size: 0.88rem;
}

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

.use-case-tag {
  display: inline-flex;
  margin-top: 18px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  h1 {
    font-size: 3.1rem;
  }

  h2 {
    font-size: 2.1rem;
  }

  .hero-inner,
  .split {
    grid-template-columns: 1fr;
  }

  .grid,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .proof-strip-inner,
  .questions-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 10px;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .nav-links {
    font-size: 0.62rem;
  }

  .nav-links a[href="https://blog.reqproof.com/"] {
    display: none;
  }

  .hero-inner,
  .section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-inner {
    padding-top: 44px;
    padding-bottom: 46px;
    gap: 22px;
  }

  .hero .hero-evidence,
  .hero .proof-panel {
    display: none;
  }

  .proof-strip-inner,
  .questions-grid {
    grid-template-columns: 1fr;
  }

  .lead-form {
    grid-template-columns: 1fr;
  }

  .lead-form button,
  .lead-form textarea,
  .lead-form .full {
    grid-column: auto;
  }

  .footer-inner {
    flex-direction: column;
  }

  .evidence-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}