/* === TOKENS ============================================================ */
:root {
  --deep:        #0A1018;
  --deep-2:      #0E1623;
  --deep-3:      #131D2E;
  --paper:       #FFFFFF;
  --paper-2:     #EAE0CB;
  --amber:       #D4933A;
  --amber-soft:  #E8B670;
  --ink:         #060A12;
  --ink-2:       #2D2922;
  --ink-3:       #6B6354;
  --ink-4:       #4A4438;

  --on-deep:        rgba(244, 236, 221, 0.92);
  --on-deep-soft:   rgba(244, 236, 221, 0.62);
  --on-deep-mute:   rgba(244, 236, 221, 0.38);
  --hair-deep:      rgba(244, 236, 221, 0.10);
  --hair-deep-2:    rgba(244, 236, 221, 0.20);
  --hair-paper:     rgba(6, 10, 18, 0.12);
  --hair-paper-2:   rgba(6, 10, 18, 0.22);

  --serif: 'Fraunces', 'Iowan Old Style', Baskerville, Georgia, 'Times New Roman', serif;
  --mono:  'IBM Plex Mono', 'SF Mono', Menlo, Monaco, Consolas, monospace;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --maxw: 1180px;
  --pad:  clamp(20px, 4vw, 56px);
}

/* === RESET ============================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--deep);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ol, ul { list-style: none; padding: 0; margin: 0; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--amber); color: var(--deep);
  padding: 10px 16px; font-family: var(--mono); font-size: 12px;
  z-index: 999;
}
.skip:focus { left: 16px; top: 16px; }

:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 2px; }

/* === LAYOUT ============================================================ */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

/* === NAV =============================================================== */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(10, 16, 24, 0.78);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 0.5px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.nav.is-scrolled { border-bottom-color: var(--hair-deep); background: rgba(10, 16, 24, 0.92); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 20px; padding-bottom: 20px;
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 16px; letter-spacing: 0.06em;
}
.mark { width: 7px; height: 7px; background: var(--amber); border-radius: 50%; display: inline-block; }
.brand-name { font-weight: 500; color: var(--paper); }
.brand-rule { width: 14px; height: 1px; background: var(--on-deep-mute); display: inline-block; }
.brand-tag { font-family: var(--serif); font-style: italic; font-size: 14px; color: var(--on-deep-soft); letter-spacing: 0; }
.links {
  display: flex; align-items: center; gap: 28px;
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em;
}
.links a:not(.cta-mini) {
  color: var(--on-deep);
  position: relative; padding-bottom: 4px;
  transition: color 0.2s ease;
}
.links a:not(.cta-mini)::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px; background: var(--amber);
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.links a:not(.cta-mini):hover { color: var(--paper); }
.links a:not(.cta-mini):hover::after { width: 100%; }
.cta-mini {
  background: var(--amber);
  color: var(--deep);
  font-family: var(--sans);
  font-weight: 500;
  letter-spacing: 0;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 13px;
  transition: background 0.2s ease;
}
.cta-mini:hover { background: var(--amber-soft); color: var(--deep); }
.cta-mini span { margin-left: 4px; display: inline-block; transition: transform 0.2s ease; }
.cta-mini:hover span { transform: translateX(2px); }

/* === HERO ============================================================== */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(56px, 8vw, 96px); }
.hero-inner {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.hero-text { max-width: 720px; }
.display {
  font-family: var(--serif);
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 1.02;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 28px;
  font-variation-settings: 'opsz' 144;
}
.display em { font-style: italic; font-variation-settings: 'opsz' 144; }
.amber-line {
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-decoration-thickness: 4px;
  text-underline-offset: 6px;
}
.sub {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.65;
  color: var(--on-deep-soft);
  max-width: 520px;
  margin: 0 0 36px;
}
.actions { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }

.cta-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--amber); color: var(--deep);
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  padding: 14px 24px; border-radius: 999px;
  transition: background 0.2s ease;
}
.cta-primary:hover { background: var(--amber-soft); }
.cta-primary span { display: inline-block; transition: transform 0.2s ease; }
.cta-primary:hover span { transform: translateX(2px); }
.cta-ghost {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em;
  color: var(--on-deep-soft);
  border-bottom: 0.5px solid var(--hair-deep-2);
  padding-bottom: 4px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.cta-ghost:hover { color: var(--amber); border-bottom-color: var(--amber); }

/* === DIAGRAM =========================================================== */
.hero-visual { display: flex; flex-direction: column; gap: 16px; }
.diagram {
  position: relative;
  aspect-ratio: 1 / 1;
  border: 0.5px solid var(--hair-deep);
  background: var(--deep-2);
  overflow: hidden;
}
.diagram-inner { position: absolute; inset: 28px; }
.grid-svg, .dots { position: absolute; inset: 0; width: 100%; height: 100%; }
.grid-svg { opacity: 0; transition: opacity 1.4s ease; }
.grid-svg line { stroke: rgba(244, 236, 221, 0.16); stroke-width: 0.25; }
.diagram.is-ordered .grid-svg { opacity: 1; }
.dot-pt {
  position: absolute;
  width: 8px; height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  background: var(--paper);
  opacity: 0.32;
  transition: transform 1.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 1.5s ease;
}
.dot-pt.is-amber { background: var(--amber); opacity: 0.44; }
.diagram.is-ordered .dot-pt { opacity: 0.78; }
.diagram.is-ordered .dot-pt.is-amber { opacity: 1; }
.diagram-meta {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.12em;
  color: var(--on-deep-mute);
  padding: 0 2px;
}
.meta-state { color: var(--on-deep-soft); transition: color 1s ease; }
.meta-state.is-active { color: var(--amber); }

/* === EYEBROWS ========================================================== */
.eyebrow,
.section-head {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 19px; letter-spacing: 0.16em;
  margin-bottom: 28px;
}
.eyebrow .num,
.section-head .num,
.section-head .num-p { color: var(--amber); font-weight: 500; }
.eyebrow .bar,
.section-head .bar { width: 28px; height: 1px; background: var(--amber); display: inline-block; }
.section-head .bar-p { width: 28px; height: 1px; background: var(--ink-3); display: inline-block; }
.eyebrow .label,
.section-head--dark .label { color: var(--on-deep-soft); }
.section-head .label-p { color: var(--ink-3); }

/* === CREDS ============================================================= */
.creds {
  border-top: 0.5px solid var(--hair-deep);
  border-bottom: 0.5px solid var(--hair-deep);
}
.creds-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 16px;
  padding: 18px var(--pad);
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.08em;
  color: var(--on-deep-soft);
}
.tiny-dot { width: 3px; height: 3px; background: var(--amber); border-radius: 50%; display: inline-block; opacity: 0.7; }

/* === DIAGNOSIS ========================================================= */
.diagnosis { background: var(--paper); color: var(--ink); padding: clamp(64px, 9vw, 120px) 0; }
.h2 {
  font-family: var(--serif);
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.06; font-weight: 400;
  letter-spacing: -0.012em;
  margin: 0 0 18px;
  color: var(--ink);
  max-width: 760px;
}
.h2-dark {
  font-family: var(--serif);
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.06; font-weight: 400;
  letter-spacing: -0.012em;
  margin: 0 0 44px;
  color: var(--paper);
  max-width: 760px;
}
.lead {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.65;
  color: var(--ink-4);
  max-width: 640px;
  margin: 0;
}
.diag-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 56px;
  border-top: 0.5px solid var(--hair-paper);
}
.diag-item {
  padding: 32px 0 36px;
  border-bottom: 0.5px solid var(--hair-paper);
  position: relative;
}
.diag-item:nth-child(odd) { padding-right: clamp(20px, 4vw, 56px); border-right: 0.5px solid var(--hair-paper); }
.diag-item:nth-child(even) { padding-left: clamp(20px, 4vw, 56px); }
.diag-item:nth-last-child(-n+2) { border-bottom: 0; }
.diag-num { font-family: var(--mono); font-size: 11px; color: var(--amber); letter-spacing: 0.06em; }
.diag-item h3 {
  font-family: var(--serif); font-size: clamp(20px, 1.8vw, 24px); font-weight: 400; line-height: 1.2;
  margin: 8px 0 10px; color: var(--ink);
}
.diag-item p { font-size: 14.5px; color: var(--ink-4); margin: 0; line-height: 1.6; }

/* === QUOTE BAND ======================================================== */
.quote-band {
  padding: clamp(72px, 11vw, 144px) 0;
  text-align: center;
  border-top: 0.5px solid var(--hair-deep);
  border-bottom: 0.5px solid var(--hair-deep);
}
.quote-mark {
  font-family: var(--serif); font-size: 64px; line-height: 1; color: var(--amber);
  display: inline-block; margin-bottom: 8px; font-style: italic;
}
.quote-text {
  font-family: var(--serif);
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.22; font-weight: 400;
  letter-spacing: -0.012em; color: var(--paper);
  max-width: 800px; margin: 0 auto;
}
.quote-text em { color: var(--amber); font-style: italic; }

/* === SERVICES ========================================================== */
.services { padding: clamp(64px, 9vw, 120px) 0 clamp(56px, 7vw, 96px); }
.svc-list { border-top: 0; }
.svc {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 0.5px solid var(--hair-deep);
  align-items: baseline;
  cursor: pointer;
  transition: padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.svc:first-child { border-top: 0.5px solid var(--hair-deep); }
.svc:hover { padding-left: 10px; padding-right: 10px; }
.svc-num {
  font-family: var(--mono); font-size: 11px;
  color: var(--on-deep-mute); letter-spacing: 0.06em;
  transition: color 0.3s ease;
  align-self: start; padding-top: 8px;
}
.svc:hover .svc-num { color: var(--amber); }
.svc-body { min-width: 0; }
.svc-name {
  font-family: var(--serif);
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 400; margin: 0;
  color: var(--paper);
  display: inline-block;
  position: relative;
  letter-spacing: -0.005em;
}
.svc-name::after {
  content: ''; position: absolute;
  left: 0; bottom: -3px;
  height: 1px; width: 0;
  background: var(--amber);
  transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}
.svc:hover .svc-name::after { width: 100%; }
.svc-desc {
  font-size: 14.5px; color: var(--on-deep-soft);
  margin: 8px 0 0; max-width: 480px; line-height: 1.55;
}
.svc-meta {
  font-family: var(--mono); font-size: 14px;
  letter-spacing: 0.1em; color: var(--on-deep-mute);
  white-space: nowrap; align-self: start; padding-top: 10px;
}

/* === METHOD ============================================================ */
.method { background: var(--paper); color: var(--ink); padding: clamp(64px, 9vw, 120px) 0; }
.method-list { position: relative; margin-top: 56px; padding-left: 60px; }
.method-track {
  position: absolute; left: 18px; top: 12px; bottom: 12px;
  width: 1px; background: var(--hair-paper);
}
.method-fill {
  position: absolute; left: 0; top: 0;
  width: 1px; height: 0;
  background: var(--amber);
  transition: height 0.15s linear;
}
.method-step {
  position: relative;
  padding: 24px 0;
  border-bottom: 0.5px solid var(--hair-paper);
}
.method-step:last-child { border-bottom: 0; }
.ms-num {
  position: absolute;
  left: -60px; top: 28px;
  width: 36px;
  font-family: var(--mono); font-size: 11px;
  color: var(--amber); letter-spacing: 0.06em;
  background: var(--paper);
  padding: 2px 0;
  z-index: 1;
}
.ms-body h3 {
  font-family: var(--serif); font-size: clamp(20px, 2vw, 26px);
  font-weight: 400; margin: 0 0 8px; color: var(--ink); letter-spacing: -0.005em;
}
.ms-body p {
  font-size: 14.5px; color: var(--ink-4); margin: 0; max-width: 640px; line-height: 1.6;
}

/* === ABOUT ============================================================= */
.about { padding: clamp(64px, 9vw, 120px) 0; }
.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
  margin-top: 8px;
}
.portrait { display: flex; flex-direction: column; gap: 18px; }
.portrait-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border: 0.5px solid var(--hair-deep-2);
  padding: 16px;
  background: var(--deep-2);
}
.portrait-frame::before, .portrait-frame::after {
  content: ''; position: absolute; background: var(--amber);
}
.portrait-frame::before { top: 0; left: 0; width: 16px; height: 1px; }
.portrait-frame::after { top: 0; left: 0; width: 1px; height: 16px; }
.portrait-frame img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  /* filter: grayscale(40%) contrast(1.05); */
}
.portrait-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 56px;
  color: var(--on-deep-mute); letter-spacing: 0.06em;
  background: linear-gradient(180deg, transparent, transparent);
}
.portrait-caption { display: flex; flex-direction: column; gap: 4px; }
.pc-name { font-family: var(--serif); font-size: 18px; margin: 0; color: var(--paper); }
.pc-meta { font-family: var(--mono); font-size: 14px; letter-spacing: 0.08em; color: var(--on-deep-mute); margin: 0; }
.about-h { margin-bottom: 28px; }
.about-body {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.68;
  color: var(--on-deep);
  margin: 0 0 18px;
  max-width: 640px;
}

/* === FAQ =============================================================== */
.faq { background: var(--paper); color: var(--ink); padding: clamp(64px, 9vw, 120px) 0; }
.faq-list { margin-top: 48px; border-top: 0.5px solid var(--hair-paper); }
.faq-item { border-bottom: 0.5px solid var(--hair-paper); }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 22px 0;
  font-family: var(--serif); font-size: clamp(17px, 1.5vw, 20px);
  color: var(--ink); text-align: left;
  transition: color 0.2s ease;
}
.faq-q:hover { color: var(--ink-4); }
.faq-q[aria-expanded="true"] { color: var(--amber); }
.faq-icon {
  position: relative;
  width: 14px; height: 14px;
  flex-shrink: 0;
}
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute;
  background: currentColor;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-icon::before { top: 50%; left: 0; width: 100%; height: 1px; transform: translateY(-50%); }
.faq-icon::after { left: 50%; top: 0; width: 1px; height: 100%; transform: translateX(-50%); }
.faq-q[aria-expanded="true"] .faq-icon::after { transform: translateX(-50%) scaleY(0); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-a-inner { padding: 0 0 24px; max-width: 700px; }
.faq-a p { margin: 0; font-size: 15px; line-height: 1.65; color: var(--ink-4); }

/* === FINAL CTA ========================================================= */
.final { background: var(--paper); color: var(--ink); padding: clamp(64px, 9vw, 128px) 0; text-align: center; border-top: 0.5px solid var(--hair-paper); }
.final-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 19px; letter-spacing: 0.16em;
  color: var(--ink-3); margin-bottom: 24px;
}
.amber-dot { width: 6px; height: 6px; background: var(--amber); border-radius: 50%; display: inline-block; }
.final-h {
  font-family: var(--serif);
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.08; font-weight: 400;
  letter-spacing: -0.012em; color: var(--ink); margin: 0 0 36px;
}
.cta-final { padding: 16px 28px; font-size: 14px; }
.final-sub {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em;
  color: var(--ink-3); margin: 24px 0 0;
}

/* === FOOTER ============================================================ */
.footer { padding: 40px 0; border-top: 0.5px solid var(--hair-deep); }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  flex-wrap: wrap;
}
.footer-left { display: flex; flex-direction: column; gap: 8px; }
.footer-sub { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--on-deep-mute); margin: 0; }
.footer-meta {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em;
  color: var(--on-deep-soft);
}
.footer-meta a { color: var(--on-deep-soft); transition: color 0.2s ease; }
.footer-meta a:hover { color: var(--amber); }

/* === SECTION INDEX ===================================================== */
.section-index {
  position: fixed; left: clamp(20px, 2.5vw, 40px); top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  pointer-events: auto;
}
.si-list { display: flex; flex-direction: column; gap: 14px; }
.si-list a {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--on-deep-mute);
  padding: 4px 0;
  transition: color 0.3s ease;
}
.si-list a:hover { color: var(--on-deep-soft); }
.si-num { display: inline-block; width: 18px; }
.si-name { opacity: 0; transform: translateX(-4px); transition: opacity 0.3s ease, transform 0.3s ease; }
.si-list a:hover .si-name,
.si-list a.is-active .si-name { opacity: 1; transform: translateX(0); }
.si-list a.is-active { color: var(--amber); }
.si-list a.is-active .si-num { font-weight: 500; }

/* dim section index over paper sections */
.si-list a.on-paper { color: rgba(6, 10, 18, 0.38); }
.si-list a.on-paper:hover { color: rgba(6, 10, 18, 0.7); }
.si-list a.on-paper.is-active { color: var(--amber); }

@media (max-width: 1180px) { .section-index { display: none; } }

/* === REVEAL ON SCROLL ================================================== */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* === RESPONSIVE ======================================================== */
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 420px; }
  .links { gap: 18px; }
  .links a:not(.cta-mini):nth-child(1),
  .links a:not(.cta-mini):nth-child(2) { display: none; }
  .links a:not(.cta-mini):nth-child(3) { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .portrait { max-width: 280px; }
  .diag-grid { grid-template-columns: 1fr; }
  .diag-item:nth-child(odd) { padding-right: 0; border-right: 0; }
  .diag-item:nth-child(even) { padding-left: 0; }
  .diag-item:nth-last-child(2) { border-bottom: 0.5px solid var(--hair-paper); }
  .svc { grid-template-columns: 28px 1fr; gap: 20px; }
  .svc-meta { grid-column: 2; padding-top: 4px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 540px) {
  .nav-inner { padding-top: 14px; padding-bottom: 14px; }
  .brand-rule, .brand-tag { display: none; }
  .hero { padding: 32px 0 56px; }
  .eyebrow { margin-bottom: 16px; }
  .display { line-height: 1.05; font-size: clamp(34px, 8.6vw, 44px); margin-bottom: 18px; }
  .sub { margin-bottom: 22px; font-size: 15px; }
  .actions { flex-direction: column; align-items: flex-start; gap: 14px; }
  .quote-text { font-size: 24px; }
}

/* === REDUCED MOTION ==================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}