/* ── Design tokens ────────────────────────────────────────────── */
:root {
  --bg:           #F5F4F0;
  --bg-dark:      #0C1524;
  --surface:      #EDECE8;
  --ink:          #0F1629;
  --ink-2:        #4B5563;
  --ink-light:    #EAE8E3;
  --ink-2-light:  #6B7A8D;
  --accent:       #1A5C4E;
  --accent-vivid: #2EB89A;
  --rule:         #D4D2CC;
  --rule-dark:    #1A2840;
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body:    system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --max-w:        1100px;
  --pad-x:        clamp(1.25rem, 5vw, 3rem);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
}

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

/* ── Layout helpers ───────────────────────────────────────────── */
.header-inner,
.hero-inner,
.problems-inner,
.aria-inner,
.contact-inner,
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ── Header ───────────────────────────────────────────────────── */
.site-header {
  background: var(--bg-dark);
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule-dark);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--ink-light);
}

.coming-soon-tag {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-vivid);
  border: 1px solid var(--accent-vivid);
  padding: 0.25rem 0.625rem;
  border-radius: 2px;
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  background: var(--bg-dark);
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 8vw, 6rem);
}

.sector-label {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2-light);
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ink-light);
  max-width: 18ch;
  margin-bottom: 1.75rem;
}

.hero-sub {
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  color: var(--ink-2-light);
  max-width: 48ch;
  line-height: 1.7;
}

/* ── ARIA ─────────────────────────────────────────────────────── */
.aria-section {
  background: var(--bg);
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.aria-content {
  max-width: 56ch;
}

.aria-eyebrow {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.aria-body {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--ink-2);
  line-height: 1.75;
}

/* ── Capabilities ─────────────────────────────────────────────── */
.problems {
  background: var(--accent);
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.problems-intro {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: rgba(255, 255, 255, 0.7);
  max-width: 48ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

.capability-list {
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.capability-list li {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  color: #fff;
  letter-spacing: -0.01em;
  padding: 1.125rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

/* ── Contact ──────────────────────────────────────────────────── */
.contact-section {
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--ink-2);
  margin-bottom: 1.25rem;
}

.email-form {
  max-width: 480px;
}

.form-row {
  display: flex;
  gap: 0.625rem;
}

.email-input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.email-input::placeholder { color: var(--ink-2); }
.email-input:focus { border-color: var(--accent); }

.submit-btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 2px;
  padding: 0.75rem 1.375rem;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.15s ease;
}

.submit-btn:hover { opacity: 0.85; }
.submit-btn:disabled { opacity: 0.5; cursor: default; }

.form-success,
.form-error { display: none; font-size: 0.875rem; margin-top: 0.875rem; }
.form-success { color: var(--accent); }
.form-error { color: #B91C1C; }
.form-error a { text-decoration: underline; color: inherit; }

.contact-direct {
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  color: var(--ink-2);
}

.contact-direct a {
  color: var(--accent);
  border-bottom: 1px solid currentColor;
}

@media (max-width: 480px) {
  .form-row { flex-direction: column; }
  .submit-btn { width: 100%; }
}

/* ── Footer ───────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--rule-dark);
  padding: 1.25rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--ink-light);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--ink-2-light);
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 680px) {
  .capability-list li {
    font-size: 1rem;
  }
}