:root {
  /* Paper design system tokens */
  --color-primary: #111111;
  --color-primary-hover: #000000;
  --color-secondary: #8B5CF6;
  --color-success: #16A34A;
  --color-success-soft: #DCFCE7;
  --color-warning: #D97706;
  --color-danger: #DC2626;
  --color-surface: #FFFFFF;
  --color-surface-soft: #FAFAF7;
  --color-text: #111827;
  --color-muted: #525866;
  --color-border: #E5E5E0;
  --color-border-strong: #D4D4CE;

  /* Spacing scale: 4/8/12/16/24/32 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* Type scale: 14/16/18/24/32/40 */
  --text-xs: 14px;
  --text-sm: 16px;
  --text-md: 18px;
  --text-lg: 24px;
  --text-xl: 32px;
  --text-2xl: 40px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;

  /* Fonts */
  --font-body: 'Roboto', system-ui, -apple-system, sans-serif;
  --font-display: 'Montserrat', system-ui, sans-serif;
  --font-mono: 'PT Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --maxw: 1100px;
  --pad: clamp(20px, 4vw, 40px);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Paper grain — applied to body bg instead of a fixed overlay */
body {
  background-color: var(--color-surface);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.4' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.07 0 0 0 0 0.07 0 0 0 0 0.07 0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

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

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

main > section { padding-top: var(--space-9); padding-bottom: var(--space-9); }
main > section.hero { padding-top: var(--space-9); padding-bottom: var(--space-8); }

/* ---------- Header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
}

.logo .dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--color-success);
  border-radius: 50%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-right a:not(.btn) {
  font-size: var(--text-xs);
  color: var(--color-muted);
  font-weight: 500;
  transition: color 0.15s;
}

.nav-right a:not(.btn):hover { color: var(--color-primary); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all 0.15s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff !important;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 14px 24px;
  font-size: var(--text-sm);
}

.btn-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 2px;
  transition: opacity 0.15s;
}
.btn-link:hover { opacity: 0.6; }

/* ---------- Typography ---------- */
h1, h2, h3 { margin: 0; font-family: var(--font-display); }

h1 {
  font-weight: 700;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-5);
  max-width: 16ch;
}

h1 em, h2 em {
  font-style: normal;
  color: var(--color-success);
  position: relative;
}

h2 {
  font-weight: 600;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  max-width: 22ch;
}

h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-bottom: var(--space-2);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-success);
  background: var(--color-success-soft);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-5);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-muted);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.section-label::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 1px;
  background: var(--color-primary);
}

.lede {
  font-size: var(--text-md);
  color: var(--color-muted);
  max-width: 44ch;
  line-height: 1.55;
  margin: 0;
  font-weight: 400;
}

/* ---------- Hero ---------- */
.cta-row {
  margin-top: var(--space-7);
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.fit-strip {
  margin-top: var(--space-7);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  max-width: 820px;
}

.fit-strip span,
.fit-strip strong {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.7);
  font-size: var(--text-xs);
  line-height: 1.25;
}

.fit-strip span {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.fit-strip strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- Problem ---------- */
.problem {
  background: var(--color-surface-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.stat {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-strong);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-3);
}

.stat-label {
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.45;
  max-width: 30ch;
}

.problem-copy {
  font-size: var(--text-md);
  max-width: 62ch;
  line-height: 1.55;
  margin: 0 0 var(--space-4);
}

.source {
  margin-top: var(--space-6);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
}

/* ---------- ICP ---------- */
.icp-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: var(--space-6);
  align-items: start;
}

.icp-copy p {
  font-size: var(--text-md);
  max-width: 58ch;
  margin: 0 0 var(--space-4);
  color: var(--color-muted);
  line-height: 1.55;
}

.signal-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.signal-card h3 {
  margin-bottom: var(--space-4);
}

.signal-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.signal-card li {
  position: relative;
  padding: 8px 0 8px 24px;
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.5;
}

.signal-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
}

/* ---------- How it works ---------- */
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.steps li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-success);
  margin-bottom: var(--space-5);
  letter-spacing: 0.06em;
}

.steps p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.6;
}

/* ---------- Why ---------- */
.why-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.card p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.6;
}

/* ---------- Audit ---------- */
.audit {
  background: var(--color-surface-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.audit-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: var(--space-7);
  align-items: start;
}

.audit-copy p {
  margin: 0;
  max-width: 56ch;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: 1.55;
}

.audit-outcomes {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-7);
}

.audit-outcomes div {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border-strong);
}

.audit-outcomes span {
  font-family: var(--font-mono);
  color: var(--color-success);
  font-size: 12px;
}

.audit-outcomes strong {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  line-height: 1.35;
}

.audit-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-row:nth-of-type(3),
.form-row:nth-of-type(4),
.form-row:nth-of-type(9) {
  grid-column: 1 / -1;
}

.form-row label {
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: 400 var(--text-sm)/1.4 var(--font-body);
  padding: 10px 12px;
  outline: none;
}

.form-row textarea {
  resize: vertical;
  min-height: 112px;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--color-primary);
}

.audit-form .btn {
  grid-column: 1 / -1;
  width: 100%;
}

.form-note {
  grid-column: 1 / -1;
  margin: -4px 0 0;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.45;
  text-align: center;
}

.hidden-field {
  display: none;
}

/* ---------- Pricing ---------- */
.price-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-7);
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.price-tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-success);
  background: var(--color-success-soft);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
}

.price-card.featured .price-tag {
  background: rgba(22, 163, 74, 0.18);
  color: #6ee7a4;
}

.price-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.price {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: var(--space-2) 0;
  line-height: 1;
}

.price span {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 0;
  margin-left: var(--space-1);
}

.price-card.featured .price span { color: rgba(255, 255, 255, 0.55); }

.price-sub {
  color: var(--color-muted);
  font-size: var(--text-xs);
  margin: 0 0 var(--space-5);
}

.price-card.featured .price-sub { color: rgba(255, 255, 255, 0.7); }

.price-card ul {
  list-style: none;
  padding: var(--space-5) 0 0;
  margin: auto 0 0;
  border-top: 1px solid var(--color-border);
}

.price-card.featured ul { border-top-color: rgba(255, 255, 255, 0.14); }

.price-card li {
  position: relative;
  padding: 6px 0 6px 24px;
  font-size: var(--text-xs);
  color: var(--color-text);
}

.price-card.featured li { color: rgba(255, 255, 255, 0.9); }

.price-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 14px;
  height: 14px;
  background: var(--color-success-soft);
  border-radius: 50%;
}

.price-card li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 6px;
  height: 3px;
  border-left: 1.5px solid var(--color-success);
  border-bottom: 1.5px solid var(--color-success);
  transform: rotate(-45deg);
}

.price-card.featured li::before { background: rgba(22, 163, 74, 0.2); }
.price-card.featured li::after { border-color: #6ee7a4; }

/* ---------- Final CTA ---------- */
.final-cta {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: clamp(48px, 7vw, 80px) clamp(24px, 5vw, 56px);
  text-align: center;
}

.final-cta h2 {
  color: #fff;
  max-width: 20ch;
  margin: 0 auto var(--space-4);
}

.final-cta h2 em { color: #6ee7a4; }

.final-cta p {
  color: rgba(255, 255, 255, 0.72);
  max-width: 52ch;
  margin: 0 auto var(--space-7);
  font-size: var(--text-md);
}

.final-cta .btn-primary {
  background: #fff;
  color: var(--color-primary) !important;
  border-color: #fff;
}

.final-cta .btn-primary:hover {
  background: #f0ede5;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-7);
  padding-bottom: var(--space-6);
  margin-top: var(--space-8);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-tag {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.footer-links a {
  color: var(--color-muted);
  font-size: var(--text-xs);
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--color-primary); }

.footer-bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-muted);
  font-family: var(--font-mono);
}

/* ---------- Thanks ---------- */
.thanks-page {
  min-height: 100vh;
}

.thanks-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-7) var(--pad);
}

.thanks-card {
  width: min(100%, 680px);
  padding: clamp(40px, 7vw, 72px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.thanks-card .logo {
  margin-bottom: var(--space-7);
}

.thanks-card h1 {
  font-size: clamp(34px, 5vw, 56px);
  max-width: 13ch;
}

.thanks-card .lede {
  margin-bottom: var(--space-7);
}

/* ============================================================
   TEMPORARY: password gate (.lock-*) + dev banner (.dev-banner).
   Remove this entire block before public launch.
   See REMOVE-BEFORE-LAUNCH.md.
   ============================================================ */

.lock-screen {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-surface);
  display: none;
  place-items: center;
  padding: var(--space-5);
}

.lock-card {
  width: 100%;
  max-width: 360px;
  padding: var(--space-7);
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.lock-dot {
  display: inline-block;
  width: 10px; height: 10px;
  background: var(--color-success);
  border-radius: 50%;
  margin-bottom: var(--space-4);
}

.lock-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-2);
}

.lock-sub {
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.5;
  margin: 0 0 var(--space-5);
}

.lock-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.lock-input {
  font: 400 var(--text-sm)/1.4 var(--font-body);
  padding: 10px 14px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  outline: none;
  background: var(--color-surface);
  color: var(--color-text);
  width: 100%;
}

.lock-input:focus { border-color: var(--color-primary); }

.lock-btn {
  font: 500 var(--text-xs)/1.4 var(--font-body);
  padding: 10px 14px;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}

.lock-btn:hover { background: var(--color-primary-hover); }

.lock-error {
  color: var(--color-danger);
  font-size: var(--text-xs);
  margin: var(--space-3) 0 0;
}

.dev-banner {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: #fef3c7;
  color: #92400e;
  border-bottom: 1px solid #fcd34d;
  padding: 10px var(--pad);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

.dev-banner.is-visible { display: flex; }

.dev-banner code {
  background: rgba(146, 64, 14, 0.12);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 11px;
}

.dev-banner-close {
  flex: 0 0 auto;
  width: 22px; height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid #fcd34d;
  border-radius: 50%;
  color: inherit;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.dev-banner-close:hover { background: rgba(146, 64, 14, 0.12); }

/* END TEMPORARY */

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .stats,
  .steps,
  .why-cards,
  .price-cards,
  .icp-grid,
  .audit-layout,
  .audit-form {
    grid-template-columns: 1fr;
  }

  .audit-form .form-row {
    grid-column: 1 / -1;
  }

  .nav-right a:not(.btn) { display: none; }

  .nav-right { gap: var(--space-3); }

  h1, h2 { max-width: none; }
}

@media (max-width: 480px) {
  .cta-row { gap: var(--space-4); }
  .btn-lg { width: 100%; }
}