/* =========================================================
   NewSignal Studio. concept-2 (Illustrated / Signature Artifact)
   Editorial / craft-magazine register. The hero is the brand
   name made visible: noise resolving into one clean signal,
   locked to a number.
   ========================================================= */

:root {
  /* warm cream paper + ink + one expressive accent (clay red) */
  --paper:        #F4ECDD;   /* warm cream paper */
  --paper-warm:   #EADFC6;   /* secondary paper */
  --paper-deep:   #E5D7B7;   /* hero band background */
  --ink:          #1F1A14;   /* warm near-black, the drawing ink */
  --ink-soft:     #5C4F3D;   /* secondary handwriting ink */
  --ink-mute:     #8A7A60;   /* muted body */
  --accent:       #B8412B;   /* clay red, the lock dot */
  --accent-deep:  #8E2E1E;
  --rule:         rgba(31, 26, 20, 0.18);
  --rule-strong:  rgba(31, 26, 20, 0.32);

  /* type */
  --serif:  "Iowan Old Style", "Charter", "Iowan", "Palatino Linotype",
            "Palatino", Georgia, "Times New Roman", serif;
  --mono:   ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  --sans:   -apple-system, BlinkMacSystemFont, "Segoe UI", Inter,
            "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-deep); }

/* subtle paper grain (no images) */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 12%, rgba(31,26,20,0.035) 0 1px, transparent 2px),
    radial-gradient(circle at 78% 64%, rgba(31,26,20,0.03) 0 1px, transparent 2px),
    radial-gradient(circle at 44% 88%, rgba(31,26,20,0.03) 0 1px, transparent 2px);
  background-size: 220px 220px, 280px 280px, 200px 200px;
  z-index: 0;
}

main, .topbar, .site-footer { position: relative; z-index: 1; }

/* =========================================================
   Topbar
   ========================================================= */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 24px;
  border-bottom: 1px solid var(--rule);
}
.wordmark {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.02em;
}
.wm-glyph { display: inline-flex; color: var(--accent); }
.wm-text { font-variant: small-caps; letter-spacing: 0.08em; }

.topbar-cta {
  font-family: var(--mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 2px;
}
.topbar-cta:hover { color: var(--accent-deep); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  padding: 36px 24px 56px;
  border-bottom: 1px solid var(--rule);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 1180px;
  margin: 0 auto;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  margin: 0 0 18px;
}
.eyebrow-on-warm { color: var(--paper); }

.hero-copy h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(40px, 9vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin: 0 0 22px;
  color: var(--ink);
}
.hero-copy h1 br { display: inline; }

.lede {
  font-size: clamp(17px, 2.1vw, 19px);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 38ch;
  margin: 0 0 28px;
}

.cta-row {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-bottom: 28px;
}

/* buttons */
.btn-primary {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  padding: 14px 22px;
  border-radius: 2px;
  border: 1.5px solid var(--ink);
  transition: transform .12s ease, background .12s ease;
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
  transform: translateY(-1px);
}
.btn-primary-lg { padding: 18px 30px; font-size: 17px; }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 22px;
  border-radius: 2px;
  border: 1.5px solid var(--ink);
}
.btn-secondary:hover { background: var(--ink); color: var(--paper); }

/* hero receipts (the three-line proof under the CTA) */
.hero-receipts {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
}
.hero-receipts li { display: flex; align-items: center; gap: 10px; }
.r-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  flex: 0 0 6px;
}

/* =========================================================
   Hero art (the signature illustration)
   ========================================================= */
.hero-art {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.art-svg {
  width: 100%;
  max-width: 640px;
  height: auto;
  display: block;
}
.art-caption {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-align: center;
  max-width: 36ch;
}

/* one quiet hover moment: the clean signal pulses one cycle toward the target */
.art-svg .clean-wave {
  stroke-dasharray: 1;
  transition: stroke-width .35s ease;
}
.art-svg .target circle:last-of-type {
  transition: r .35s cubic-bezier(.2,.7,.2,1);
}
.hero-art:hover .art-svg .clean-wave { stroke-width: 3.4; }
.hero-art:hover .art-svg .target circle:last-of-type { r: 7.5; }

/* desktop hero layout */
@media (min-width: 880px) {
  .hero { padding: 64px 40px 88px; }
  .hero-grid {
    grid-template-columns: 1fr 1.05fr;
    gap: 56px;
    align-items: center;
  }
}
@media (min-width: 1100px) {
  .hero-grid { gap: 80px; }
}

/* =========================================================
   Bands (shared)
   ========================================================= */
.band {
  padding: 64px 24px;
  border-bottom: 1px solid var(--rule);
}
.band-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.band-h {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}

/* =========================================================
   PAS band
   ========================================================= */
.band-pas .band-inner { max-width: 760px; }
.band-pas {
  background: var(--paper);
  text-align: left;
}
.band-pas .band-h {
  font-style: italic;
}
.band-body {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0;
  max-width: 56ch;
}

/* =========================================================
   Sprint mechanism band (the warm dark band)
   ========================================================= */
.band-mech {
  background: var(--ink);
  color: var(--paper);
  border-bottom: none;
}
.band-mech .band-h,
.band-mech h2,
.band-mech h3 { color: var(--paper); }

.mech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.mech-head h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.1;
  margin: 0 0 18px;
}
.mech-lede {
  color: rgba(244, 236, 221, 0.78);
  font-size: clamp(16px, 1.8vw, 18px);
  line-height: 1.6;
  margin: 0;
  max-width: 48ch;
}

.mech-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 28px;
}
.mech-list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  border-top: 1px solid rgba(244, 236, 221, 0.18);
  padding-top: 24px;
}
.mech-list li:first-child { border-top: none; padding-top: 0; }

.mech-num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--accent);
  padding-top: 6px;
}
.mech-list h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.005em;
  margin: 0 0 6px;
}
.mech-list p {
  margin: 0;
  color: rgba(244, 236, 221, 0.72);
  font-size: 16px;
  line-height: 1.55;
  max-width: 48ch;
}

@media (min-width: 880px) {
  .band-mech { padding: 96px 40px; }
  .mech-grid {
    grid-template-columns: 1fr 1.3fr;
    gap: 72px;
    align-items: start;
  }
}

/* =========================================================
   Terms band
   ========================================================= */
.band-terms {
  background: var(--paper-deep);
}
.terms-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 28px;
}

.term-card {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  padding: 28px 26px;
  position: relative;
}
.term-card h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.2;
  margin: 4px 0 10px;
  letter-spacing: -0.005em;
}
.term-card p {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.term-tag {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  margin: 0 0 10px;
}

.term-card-miss {
  background: var(--paper);
  border-color: var(--accent);
}
.term-card-miss h3 { color: var(--accent-deep); }
.term-card-miss .term-tag { color: var(--accent-deep); }

.term-card-hit {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.term-card-hit h3 { color: var(--paper); }
.term-card-hit .term-tag { color: var(--accent); }
.term-card-hit p { color: rgba(244, 236, 221, 0.78); }
.term-card-hit strong { color: var(--paper); font-weight: 700; }

.terms-foot {
  margin: 28px 0 0;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  border-top: 1px solid var(--rule);
  padding-top: 18px;
}

@media (min-width: 760px) {
  .terms-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .term-card-hit { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  .terms-grid { grid-template-columns: 1fr 1fr 2fr; }
  .term-card-hit { grid-column: auto; }
}

/* =========================================================
   Three reasons band
   ========================================================= */
.band-three { background: var(--paper); }
.three-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 16px;
}
.three-card {
  border-top: 1px solid var(--ink);
  padding-top: 22px;
}
.three-mark {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}
.three-card h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.005em;
  margin: 0 0 10px;
}
.three-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.55;
  max-width: 38ch;
}

@media (min-width: 760px) {
  .three-grid { grid-template-columns: repeat(3, 1fr); gap: 40px; }
}

/* =========================================================
   Fit band
   ========================================================= */
.band-fit { background: var(--paper-deep); }
.fit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.fit-grid h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1.1;
  margin: 0;
  max-width: 18ch;
}
.fit-list {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  gap: 14px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
}
.fit-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 4px;
  align-items: baseline;
}
.fit-tick {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}
.fit-list li:nth-child(n+5) .fit-tick { color: var(--ink-mute); }

@media (min-width: 880px) {
  .fit-grid { grid-template-columns: 1fr 1.3fr; gap: 72px; align-items: start; }
}

/* =========================================================
   Close / final CTA
   ========================================================= */
.band-close {
  background: var(--paper);
  text-align: center;
  border-bottom: none;
  padding: 80px 24px 96px;
}
.close-inner { max-width: 720px; margin: 0 auto; }
.close-mark {
  width: 280px;
  height: auto;
  display: block;
  margin: 0 auto 28px;
  color: var(--ink);
}
.band-close h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}
.close-lede {
  color: var(--ink-soft);
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.6;
  margin: 0 auto 28px;
  max-width: 50ch;
}
.close-mini {
  margin: 16px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  padding: 28px 24px 40px;
  background: var(--ink);
  color: rgba(244, 236, 221, 0.78);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-align: center;
}
.site-footer a { color: var(--paper); text-decoration: none; border-bottom: 1px solid rgba(244,236,221,0.4); }
.site-footer a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.site-footer strong { color: var(--paper); font-weight: 600; }

/* =========================================================
   Reduced motion
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  .art-svg .clean-wave,
  .art-svg .target circle,
  .btn-primary { transition: none; }
  .hero-art:hover .art-svg .clean-wave { stroke-width: 3; }
  .hero-art:hover .art-svg .target circle:last-of-type { r: 6; }
}