:root {
  --ink: #0a0a0a;
  --paper: #f7f7f5;
  --hair: #e6e4dc;
  --mute: #71706b;
  --face-display: 'Cabinet Grotesk', system-ui, -apple-system, "Segoe UI", sans-serif;
  --face-mono: 'JetBrains Mono', ui-monospace, "SF Mono", Menlo, monospace;
  --max: 1180px;
  --pad: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--face-display);
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }

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

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 4px;
}
.cta :focus-visible,
.site-foot :focus-visible { outline-color: var(--paper); }

.eyebrow {
  font-family: var(--face-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 1.4rem;
}

/* ---------- header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px var(--pad);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--hair);
}

.brand { display: flex; align-items: baseline; gap: 14px; }
.brand-mark { height: 26px; width: auto; }
.brand-tag {
  font-family: var(--face-mono);
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--mute);
  padding-left: 14px;
  border-left: 1px solid var(--hair);
}

.head-nav { display: flex; align-items: center; gap: 30px; }
.head-nav a {
  font-family: var(--face-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--mute);
  transition: color 0.18s ease;
}
.head-nav a:hover { color: var(--ink); }
.head-cta {
  color: var(--ink) !important;
  font-weight: 600;
}
@media (max-width: 680px) {
  .head-nav a:not(.head-cta) { display: none; }
  .brand-tag { display: none; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--face-display);
  font-weight: 500;
  font-size: 0.98rem;
  padding: 14px 24px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: transform 0.16s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn span { transition: transform 0.18s ease; }
.btn:hover span { transform: translateX(3px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #1f1f1f; }
.btn-ghost { border-color: var(--hair); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.btn-invert { background: var(--paper); color: var(--ink); }
.btn-invert:hover { background: #fff; }

/* ---------- hero ---------- */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(56px, 9vw, 120px) var(--pad) clamp(40px, 6vw, 80px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
}

.hero-title {
  font-weight: 800;
  font-size: clamp(2.6rem, 6.4vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin: 0 0 1.6rem;
}
.hero-sub {
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
  color: var(--mute);
  max-width: 30ch;
  margin: 0 0 2.4rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 3rem; }

.hero-stats {
  display: flex;
  gap: clamp(24px, 4vw, 52px);
  margin: 0;
  padding-top: 1.8rem;
  border-top: 1px solid var(--hair);
}
.hero-stats div { display: flex; flex-direction: column-reverse; gap: 4px; }
.hero-stats dt {
  font-family: var(--face-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}
.hero-stats dd {
  margin: 0;
  font-weight: 800;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  letter-spacing: -0.03em;
}

/* ---------- hero visual / window ---------- */
.hero-visual { display: flex; flex-direction: column; gap: 14px; }
.window {
  background: #fff;
  border: 1px solid var(--hair);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(10,10,10,0.02),
              0 30px 60px -28px rgba(10,10,10,0.28);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--hair);
  background: var(--paper);
}
.window-bar .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--hair);
}
.window-url {
  margin-left: 12px;
  font-family: var(--face-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--mute);
}
.window-body { padding: clamp(20px, 3vw, 34px); background: #fff; }
.sig-gif { width: 100%; height: auto; border-radius: 6px; }

/* fallback mock signature */
.sig-mock { display: flex; gap: 18px; align-items: center; }
.sig-mock-photo {
  flex: 0 0 auto;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: grid; place-items: center;
  font-weight: 800; font-size: 1.3rem; letter-spacing: -0.02em;
}
.sig-mock-text { display: flex; flex-direction: column; gap: 3px; }
.sig-mock-text strong { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; }
.sig-mock-text span { font-size: 0.82rem; color: var(--mute); }
.sig-mock-contact { font-family: var(--face-mono); font-size: 0.74rem !important; }
.sig-mock-cta {
  margin-top: 8px;
  font-weight: 600; font-size: 0.82rem !important; color: var(--ink) !important;
}

.visual-caption {
  font-family: var(--face-mono);
  font-size: 0.72rem;
  color: var(--mute);
  margin: 0;
  padding-left: 4px;
}

/* ---------- band ---------- */
.band {
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}
.band-text {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 76px) var(--pad);
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 500;
  max-inline-size: 22ch;
}
.band-text { max-inline-size: none; }
.band-text span { color: var(--mute); }

/* ---------- features ---------- */
.features {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(56px, 8vw, 104px) var(--pad);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: 16px;
  overflow: hidden;
}
@media (max-width: 720px) { .feature-grid { grid-template-columns: 1fr; } }
.feature {
  background: var(--paper);
  padding: clamp(28px, 3.5vw, 44px);
  transition: background 0.2s ease;
}
.feature:hover { background: #fff; }
.feature-no {
  font-family: var(--face-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--mute);
}
.feature h3 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0.9rem 0 0.7rem;
}
.feature p { margin: 0; color: var(--mute); font-size: 0.98rem; }

/* ---------- how ---------- */
.how {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(24px, 4vw, 56px) var(--pad) clamp(56px, 8vw, 104px);
}
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 4vw, 56px);
  counter-reset: step;
}
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }
.steps li { position: relative; padding-top: 1.6rem; border-top: 2px solid var(--ink); }
.step-no {
  font-family: var(--face-mono);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.steps h3 { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.025em; margin: 0.7rem 0 0.5rem; }
.steps p { margin: 0; color: var(--mute); }

/* ---------- cta ---------- */
.cta {
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  padding: clamp(64px, 10vw, 130px) var(--pad);
}
.cta h2 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
}
.cta p { color: rgba(247,247,245,0.66); margin: 0 0 2.4rem; font-size: 1.1rem; }

/* ---------- footer ---------- */
.site-foot {
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 36px var(--pad);
  border-top: 1px solid rgba(247,247,245,0.12);
}
.foot-mark { height: 22px; width: auto; opacity: 0.95; }
.foot-meta {
  display: flex;
  gap: 22px;
  font-family: var(--face-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(247,247,245,0.5);
}
.foot-link {
  font-family: var(--face-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: rgba(247,247,245,0.7);
  transition: color 0.18s ease;
}
.foot-link:hover { color: var(--paper); }

/* reveal on scroll */
@media (prefers-reduced-motion: no-preference) {
  .hero-copy, .hero-visual, .feature, .steps li, .band-text {
    animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both;
  }
  .hero-visual { animation-delay: 0.08s; }
  .feature:nth-child(2) { animation-delay: 0.05s; }
  .feature:nth-child(3) { animation-delay: 0.1s; }
  .feature:nth-child(4) { animation-delay: 0.15s; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}