/* Wave or Particle — site styles */
:root {
  --deep: #0C2A2B;
  --deep-2: #12393A;
  --deep-line: #1E4443;
  --tide: #128A85;
  --tide-bright: #2BB5AE;
  --tide-dark: #0D6C68;
  --coral: #FF6F59;
  --coral-dark: #E8553F;
  --foam: #EEF3F1;
  --white: #FFFFFF;
  --kelp: #4F6664;
  --ink-2: #34504D;
  --mist: #D3DEDB;
  --on-deep: #EEF3F1;
  --on-deep-2: #C3D4D1;
  --on-deep-3: #9DB8B5;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.5rem;
  --step-3: clamp(1.75rem, 1.4rem + 1.4vw, 2.375rem);
  --step-4: clamp(2.25rem, 1.6rem + 2.6vw, 3.5rem);
  --step-5: clamp(2.75rem, 1.8rem + 4vw, 5rem);

  --wrap: 1160px;
  --gutter: clamp(1rem, 4vw, 2rem);
  --section: clamp(4rem, 8vw, 7rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--foam);
  color: var(--deep);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: var(--step-5); letter-spacing: -0.03em; line-height: 1.02; }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); letter-spacing: -0.01em; line-height: 1.2; }
p { margin: 0; max-width: 64ch; }

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

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

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--deep); color: var(--on-deep); padding: 0.75rem 1rem; z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(238, 243, 241, 0.92);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--mist);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 72px;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.75rem;
  color: var(--deep); text-decoration: none;
}
.brand svg { width: 56px; height: 29px; }
.wordmark { font-family: var(--font-display); font-weight: 500; font-size: 1.375rem; letter-spacing: -0.015em; }
.wordmark .or { font-weight: 400; color: var(--kelp); }

.nav-toggle {
  display: none;
  font: inherit; font-weight: 500;
  background: none; border: 1px solid var(--deep); color: var(--deep);
  border-radius: 3px; padding: 0.5rem 0.875rem; min-height: 44px; cursor: pointer;
}
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 2rem; }
.nav a { color: var(--deep); text-decoration: none; font-size: 0.975rem; padding: 0.5rem 0; }
.nav a:hover { color: var(--tide-dark); }
.nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--tide); }
.nav a.btn[aria-current="page"] { box-shadow: none; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--foam); border-bottom: 1px solid var(--mist); display: none; }
  .nav.open { display: block; }
  .nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 0.5rem var(--gutter) 1.25rem; }
  .nav a { display: block; padding: 0.875rem 0; border-bottom: 1px solid var(--mist); }
  .nav li:last-child a { border-bottom: 0; margin-top: 0.75rem; text-align: center; }
  .nav a[aria-current="page"] { box-shadow: none; color: var(--tide-dark); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0.8rem 1.4rem;
  font: inherit; font-weight: 500; font-size: 1rem; line-height: 1.2;
  border-radius: 3px; border: 1px solid transparent; text-decoration: none; cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--deep); color: var(--on-deep); }
.btn-primary:hover { background: var(--tide-dark); color: var(--white); }
.btn-coral { background: var(--coral); color: var(--deep); }
.btn-coral:hover { background: #FF8A77; color: var(--deep); }
.btn-ghost { border-color: currentColor; color: var(--deep); background: transparent; }
.btn-ghost:hover { background: var(--deep); color: var(--on-deep); border-color: var(--deep); }
.on-deep .btn-ghost { color: var(--on-deep); }
.on-deep .btn-ghost:hover { background: var(--on-deep); color: var(--deep); border-color: var(--on-deep); }
.nav .btn { padding: 0.6rem 1rem; min-height: 44px; color: var(--on-deep); }
.nav .btn:hover { color: var(--white); }

/* ---------- Hero ---------- */
.hero {
  background: var(--deep); color: var(--on-deep);
  overflow: hidden; position: relative;
}
.hero .wrap {
  display: grid; grid-template-columns: minmax(0, 1fr);
  padding-top: clamp(3.5rem, 8vw, 6.5rem); padding-bottom: clamp(2rem, 4vw, 3rem);
  gap: clamp(2rem, 5vw, 3.5rem);
}
.hero-copy { display: grid; gap: 1.5rem; max-width: 46rem; }
.hero h1 { color: var(--on-deep); }
.hero .lede { font-size: var(--step-1); line-height: 1.55; color: var(--on-deep-2); max-width: 40rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 0.875rem; margin-top: 0.5rem; }

.hero-mark { width: 100%; height: auto; overflow: visible; }
.hero-legend {
  display: flex; justify-content: space-between; gap: 1rem;
  border-top: 1px solid var(--deep-line); padding-top: 1rem;
  color: var(--on-deep-3); font-size: var(--step--1);
}
.hero-legend b { font-weight: 600; }
.hero-legend .c { color: var(--coral); }
.hero-legend .t { color: var(--tide-bright); }

/* the one orchestrated moment */
.js .hero-mark .p { opacity: 0; transform: translate(var(--dx), var(--dy)); }
.js .hero-mark .w { stroke-dasharray: 120; stroke-dashoffset: 120; }
.js .hero-mark.play .p {
  animation: settle 1.4s cubic-bezier(.2,.7,.2,1) forwards;
  animation-delay: calc(var(--i) * 90ms);
}
.js .hero-mark.play .w { animation: draw 1.1s cubic-bezier(.4,0,.2,1) 0.85s forwards; }
@keyframes settle { to { opacity: 1; transform: translate(0, 0); } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .js .hero-mark .p, .js .hero-mark.play .p { opacity: 1; transform: none; animation: none; }
  .js .hero-mark .w, .js .hero-mark.play .w { stroke-dashoffset: 0; animation: none; }
}

/* ---------- Page header (inner pages) ---------- */
.page-head { background: var(--deep); color: var(--on-deep); }
.page-head .wrap { padding-top: clamp(3rem, 7vw, 5.5rem); padding-bottom: clamp(3rem, 6vw, 4.5rem); display: grid; gap: 1.25rem; }
.page-head h1 { font-size: var(--step-4); color: var(--on-deep); max-width: 22ch; }
.page-head p { font-size: var(--step-1); color: var(--on-deep-2); line-height: 1.55; max-width: 42rem; }
.page-head .mini-mark { width: 92px; height: 48px; margin-bottom: 0.5rem; }

/* ---------- Sections ---------- */
.section { padding: var(--section) 0; }
.section + .section { padding-top: 0; }
.section.alt { background: var(--white); border-top: 1px solid var(--mist); border-bottom: 1px solid var(--mist); }
.section.alt + .section,
.section + .section.alt { padding-top: var(--section); }
.section-head { display: grid; gap: 1rem; margin-bottom: clamp(2rem, 4vw, 3rem); max-width: 46rem; }
.section-head p { color: var(--ink-2); font-size: var(--step-1); line-height: 1.55; }

.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(2rem, 6vw, 5rem); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: minmax(0, 1fr); } }
.prose { display: grid; gap: 1.1rem; color: var(--ink-2); }
.prose strong { color: var(--deep); font-weight: 600; }

/* audience strip */
.audience { border-bottom: 1px solid var(--mist); background: var(--white); }
.audience ul {
  list-style: none; margin: 0 auto; padding: 1.25rem var(--gutter);
  max-width: var(--wrap); display: flex; flex-wrap: wrap; gap: 0.5rem 2.25rem;
  color: var(--ink-2); font-size: 0.975rem;
}
.audience li::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--coral-dark); margin-right: 0.6rem; vertical-align: 2px; }

/* ---------- Audit lead + models ---------- */
.audit-lead {
  background: var(--deep); color: var(--on-deep); border-radius: 6px;
  padding: clamp(1.75rem, 4vw, 3rem);
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
}
@media (max-width: 860px) { .audit-lead { grid-template-columns: minmax(0, 1fr); } }
.audit-lead h3 { font-size: var(--step-3); color: var(--on-deep); }
.audit-lead p { color: var(--on-deep-2); }
.audit-lead .tag { color: var(--coral); font-weight: 600; font-size: 0.95rem; }
.audit-lead ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.75rem; color: var(--on-deep-2); }
.audit-lead li { padding-left: 1.5rem; position: relative; }
.audit-lead li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 8px; border-radius: 50%; background: var(--tide-bright); }
.audit-lead .stack { display: grid; gap: 1rem; align-content: start; }

.models { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--mist); border-radius: 6px; background: var(--white); }
.model { padding: clamp(1.5rem, 3vw, 2.25rem); display: grid; gap: 0.9rem; align-content: start; grid-template-rows: auto auto 1fr auto; }
.model + .model { border-left: 1px solid var(--mist); }
.model p { color: var(--ink-2); font-size: 1rem; }
.model .price { font-weight: 600; color: var(--deep); font-size: 0.95rem; }
.model dl { margin: 0; display: grid; gap: 0.6rem; font-size: 0.95rem; border-top: 1px solid var(--mist); padding-top: 1rem; align-self: end; }
.model dl div { display: flex; justify-content: space-between; gap: 1rem; }
.model dt { color: var(--kelp); }
.model dd { margin: 0; font-weight: 500; text-align: right; }
.model .wave-ic { width: 54px; height: 28px; }
@media (max-width: 900px) {
  .models { grid-template-columns: minmax(0, 1fr); }
  .model + .model { border-left: 0; border-top: 1px solid var(--mist); }
}

/* ---------- Steps ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 2.5rem); counter-reset: step; }
.steps li { border-top: 2px solid var(--deep); padding-top: 1.25rem; display: grid; gap: 0.6rem; align-content: start; }
.steps li:last-child { border-top-color: var(--tide); }
.steps .n { font-family: var(--font-mono); font-size: 0.9rem; color: var(--kelp); }
.steps p { color: var(--ink-2); font-size: 1rem; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .steps { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Principles ---------- */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3rem); }
.principles div { display: grid; gap: 0.6rem; align-content: start; }
.principles p { color: var(--ink-2); font-size: 1rem; }
@media (max-width: 820px) { .principles { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Workflows grid ---------- */
.workflows { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 0; border-top: 1px solid var(--mist); }
.workflows li { padding: 1.5rem 1.5rem 1.5rem 0; border-bottom: 1px solid var(--mist); display: grid; gap: 0.4rem; align-content: start; }
.workflows h3 { font-size: var(--step-1); }
.workflows p { color: var(--ink-2); font-size: 1rem; }

/* ---------- Compare table ---------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--mist); border-radius: 6px; background: var(--white); }
table.compare { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 1rem; }
.compare th, .compare td { text-align: left; padding: 1rem 1.25rem; border-bottom: 1px solid var(--mist); vertical-align: top; }
.compare thead th { font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; background: var(--foam); }
.compare tbody th { font-weight: 500; color: var(--kelp); width: 22%; }
.compare tr:last-child th, .compare tr:last-child td { border-bottom: 0; }

/* ---------- Detail blocks (services) ---------- */
.detail { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(1.5rem, 5vw, 4rem); padding: clamp(2rem, 4vw, 3rem) 0; border-top: 1px solid var(--mist); }
.detail:last-child { border-bottom: 1px solid var(--mist); }
.detail .head { display: grid; gap: 0.75rem; align-content: start; }
.detail .head .price { font-weight: 600; color: var(--tide-dark); }
.detail .body { display: grid; gap: 1.25rem; color: var(--ink-2); }
.detail ul { margin: 0; padding-left: 1.2rem; display: grid; gap: 0.5rem; }
@media (max-width: 820px) { .detail { grid-template-columns: minmax(0, 1fr); } }

/* ---------- FAQ ---------- */
.faq { display: grid; border-top: 1px solid var(--mist); }
.faq details { border-bottom: 1px solid var(--mist); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.25rem 2.5rem 1.25rem 0; position: relative;
  font-family: var(--font-display); font-weight: 500; font-size: var(--step-1);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0.25rem; top: 1.1rem; font-size: 1.5rem; line-height: 1; color: var(--tide-dark); }
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding: 0 0 1.5rem; color: var(--ink-2); max-width: 64ch; }

/* ---------- Pilot callout ---------- */
.pilot {
  border: 1.5px dashed var(--tide); border-radius: 6px; padding: clamp(1.5rem, 4vw, 2.5rem);
  display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: center; justify-content: space-between;
  background: var(--white);
}
.pilot h2 { font-size: var(--step-3); max-width: 26ch; }
.pilot p { color: var(--ink-2); margin-top: 0.6rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--deep); color: var(--on-deep); }
.cta-band .wrap { padding-top: var(--section); padding-bottom: var(--section); display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 2rem; align-items: end; }
.cta-band h2 { color: var(--on-deep); }
.cta-band p { color: var(--on-deep-2); font-size: var(--step-1); margin-top: 1rem; }
.cta-band .actions { display: flex; flex-wrap: wrap; gap: 0.875rem; justify-content: flex-start; }
@media (max-width: 820px) { .cta-band .wrap { grid-template-columns: minmax(0, 1fr); align-items: start; } }

/* ---------- Founder ---------- */
.founder { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3rem); align-items: start; }
.founder .portrait {
  aspect-ratio: 4 / 5; border-radius: 6px; background: var(--deep);
  display: grid; place-items: center; color: var(--on-deep-3); font-size: 0.85rem; text-align: center; padding: 1rem;
}
.founder .portrait svg { width: 70%; height: auto; }
@media (max-width: 640px) { .founder { grid-template-columns: minmax(0, 1fr); } .founder .portrait { max-width: 200px; } }

/* ---------- Contact form ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(2rem, 6vw, 5rem); align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }
.form { display: grid; gap: 1.25rem; background: var(--white); border: 1px solid var(--mist); border-radius: 6px; padding: clamp(1.5rem, 4vw, 2.5rem); }
.field { display: grid; gap: 0.4rem; }
.field label { font-weight: 500; font-size: 0.975rem; }
.field .hint { color: var(--kelp); font-size: 0.9rem; }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1rem; color: var(--deep);
  background: var(--foam); border: 1px solid #B7C9C5; border-radius: 3px;
  padding: 0.8rem 0.9rem; min-height: 48px; width: 100%;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--tide); outline-offset: 0; border-color: var(--tide); }
.field-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.25rem; }
@media (max-width: 560px) { .field-row { grid-template-columns: minmax(0, 1fr); } }
.hp { position: absolute; left: -9999px; }
.form .note { font-size: 0.9rem; color: var(--kelp); }

.next-steps { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 1.25rem; counter-reset: ns; }
.next-steps li { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: 0.75rem; color: var(--ink-2); }
.next-steps li::before { counter-increment: ns; content: counter(ns); font-family: var(--font-mono); width: 2rem; height: 2rem; border-radius: 50%; border: 1.5px solid var(--tide); display: grid; place-items: center; font-size: 0.9rem; color: var(--tide-dark); }
.next-steps strong { color: var(--deep); display: block; font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer { background: var(--deep); color: var(--on-deep-3); border-top: 1px solid var(--deep-line); }
.site-footer .wrap { padding-top: 2.5rem; padding-bottom: 2.5rem; display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr)); gap: 2rem; }
.site-footer .brand { color: var(--on-deep); }
.site-footer .brand .or { color: var(--on-deep-3); }
.site-footer p { margin-top: 0.9rem; font-size: 0.95rem; }
.site-footer h2 { font-size: 1rem; letter-spacing: 0; color: var(--on-deep); margin-bottom: 0.75rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; font-size: 0.95rem; }
.site-footer a { color: var(--on-deep-2); text-decoration: none; }
.site-footer a:hover { color: var(--white); text-decoration: underline; }
.site-footer .legal { max-width: none; grid-column: 1 / -1; border-top: 1px solid var(--deep-line); padding-top: 1.5rem; font-size: 0.875rem; }
@media (max-width: 720px) { .site-footer .wrap { grid-template-columns: minmax(0, 1fr); } }

/* thanks / 404 */
.center-page { min-height: 60vh; display: grid; align-content: center; gap: 1.25rem; padding: var(--section) 0; }