/* prestinhearing.com — landing. Warm instrument, modern: restraint + precision.
   Built to ../brand/aesthetic-principles.md. See ../research/ for the evidence. */

@font-face{ font-family:"Fraunces"; src:url("fonts/fraunces.woff2") format("woff2"); font-weight:400 700; font-display:swap; }
@font-face{ font-family:"Switzer"; src:url("fonts/switzer-400.woff2") format("woff2"); font-weight:400; font-display:swap; }
@font-face{ font-family:"Switzer"; src:url("fonts/switzer-500.woff2") format("woff2"); font-weight:500; font-display:swap; }
@font-face{ font-family:"Switzer"; src:url("fonts/switzer-600.woff2") format("woff2"); font-weight:600; font-display:swap; }
@font-face{ font-family:"JBMono"; src:url("fonts/jbmono-400.woff2") format("woff2"); font-weight:400; font-display:swap; }
@font-face{ font-family:"JBMono"; src:url("fonts/jbmono-500.woff2") format("woff2"); font-weight:500; font-display:swap; }

:root{
  /* clean modern WHITE base — flat, no page-wide tint; one faint blue only at the hero top */
  --paper:#ffffff; --paper-2:#f6f7f9; --paper-3:#f4f6f8;
  --surface:#ffffff; --surface-2:#f7f9fc; --surface-sunk:#eef1f5;
  --ink-band:#0f1217; --ink-band-2:#171b22;
  --rule:#e8eaee; --rule-strong:#d4d7dd;
  --ink:#1b1d22; --body:#43464d; --muted:#86868b;
  --brass:#a8823f; --brass-deep:#856630; --brass-lite:#c2a05a; --brass-soft:#eef3fb;
  --blue-wash:#e7f0fc;                 /* the faint blue at the hero top (Apple-style) */
  --ear-r:#9c4a3c; --ear-l:#3a4a57;    /* clinical audiogram convention (the one exception) */
  --font-display:"Big Caslon","Hoefler Text","Fraunces",Georgia,serif;
  --font-ui:"Switzer",system-ui,-apple-system,sans-serif;
  --font-data:"JBMono",ui-monospace,Menlo,monospace;
  --maxw:1240px; --measure:680px;
  /* layered depth shadows, warm-tinted toward the palette (never pure black) */
  --sh-1:0 1px 2px rgba(20,28,45,.05);
  --sh-2:0 1px 2px rgba(20,28,45,.04), 0 2px 8px rgba(20,28,45,.05), 0 16px 38px rgba(20,28,45,.06);
  --sh-3:0 2px 6px rgba(20,28,45,.05), 0 8px 20px rgba(20,28,45,.07), 0 34px 80px rgba(20,28,45,.09);
  --ease:cubic-bezier(.22,.61,.36,1);
  /* faint film grain (dithers any gradient banding — the Stripe/Vercel trick) */
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
}
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; color:var(--body); font-family:var(--font-ui); font-size:18px; line-height:1.7;
  font-feature-settings:"cnum" 1,"tnum" 1; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  background:var(--paper);          /* one continuous canvas for every section */
}
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 40px; position:relative; z-index:2; }
.measure{ max-width:var(--measure); }
.mono{ font-family:var(--font-data); }
a{ color:inherit; }
::selection{ background:var(--brass-soft); }
:focus-visible{ outline:2px solid var(--brass); outline-offset:3px; border-radius:4px; }
.eyebrow{ font-family:var(--font-data); font-size:12.5px; letter-spacing:.22em; text-transform:uppercase; color:var(--brass-deep); margin:0 0 22px; }
h1,h2,h3{ font-family:var(--font-display); color:var(--ink); font-weight:600; }
h1{ letter-spacing:.012em; } h2{ letter-spacing:.01em; }

/* ---- nav ---- */
.nav{ position:sticky; top:0; z-index:20; transition:background .3s,border-color .3s,box-shadow .3s; border-bottom:1px solid transparent; }
.nav.scrolled{ background:color-mix(in srgb,var(--paper) 80%,transparent); backdrop-filter:saturate(1.2) blur(12px); border-bottom:1px solid var(--rule); box-shadow:var(--sh-1); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ font-family:var(--font-display); font-size:27px; font-weight:500; color:var(--ink); letter-spacing:.02em; text-decoration:none; }
.nav-links{ display:flex; align-items:center; gap:36px; }
.nav-links a:not(.btn){ text-decoration:none; color:var(--body); font-size:15px; transition:color .2s; }
.nav-links a:not(.btn):hover{ color:var(--ink); }
.btn{ font-family:var(--font-ui); font-size:15px; font-weight:500; padding:11px 22px; border-radius:9px; border:1px solid transparent; cursor:pointer; text-decoration:none; display:inline-block; transition:transform .18s var(--ease), box-shadow .25s, background .2s, border-color .2s, color .2s; }
.btn-primary{ background:var(--ink); color:#ffffff; box-shadow:var(--sh-1); }
.btn-primary:hover{ background:#2c2e34; transform:translateY(-1px); box-shadow:var(--sh-2); }
.btn-ghost{ background:var(--surface); color:var(--ink); border-color:var(--rule-strong); }
.btn-ghost:hover{ border-color:var(--ink); transform:translateY(-1px); box-shadow:var(--sh-1); }

/* ---- sections (one continuous canvas; rhythm by spacing, not background) ---- */
section{ padding:132px 0; position:relative; }
h2{ font-size:clamp(32px,4vw,50px); line-height:1.08; margin:0 0 18px; }
.lede{ font-size:21px; color:var(--body); margin:0; line-height:1.6; }
.divider{ height:1px; background:linear-gradient(90deg,transparent,var(--rule),transparent); border:none; margin:0; }

/* ---- hero: one smooth warm bowl, OKLAB-interpolated + grain (no banding/seam) ---- */
.hero{ padding:118px 0 140px; text-align:center; position:relative; overflow:hidden; }
.hero{ background:var(--paper); }   /* fallback if the gradient below can't parse */
.hero{ background:radial-gradient(126% 92% at 50% -13% in oklab,
    var(--blue-wash) 0%, #eef5fd 24%, #f5f9fe 46%, #fbfdff 66%, var(--paper) 82%); }
.hero::after, .mission::after{ content:""; position:absolute; inset:0; pointer-events:none; z-index:1;
  background-image:var(--grain); background-size:170px 170px; opacity:.04; }
.hero h1{ font-size:clamp(46px,7.4vw,88px); line-height:1.0; margin:0 0 26px; letter-spacing:.01em; }
.hero .lede{ max-width:640px; margin:0 auto 34px; font-size:22px; }
.hero-cta{ display:flex; gap:16px; justify-content:center; align-items:center; }
.hero-cta .btn{ padding:14px 28px; font-size:16px; }
.hero-trust{ margin-top:22px; font-family:var(--font-data); font-size:12.5px; letter-spacing:.05em; color:var(--muted);
  display:flex; gap:13px; justify-content:center; flex-wrap:wrap; align-items:center; }
.hero-trust .sep{ color:var(--rule-strong); }
.hero-trust b{ color:var(--brass-deep); font-weight:500; }

/* ---- the product mock (3D tilt, warm-tinted depth) ---- */
.stage{ perspective:1600px; margin:72px auto 0; max-width:960px; }
.mock{ border-radius:16px; overflow:hidden; background:var(--surface);
  box-shadow:0 2px 10px rgba(54,42,24,.07), 0 12px 34px rgba(54,42,24,.09), 0 44px 90px rgba(54,42,24,.10);
  transform-style:preserve-3d; transition:transform .25s var(--ease), box-shadow .3s; will-change:transform; }
.mock-bar{ display:flex; align-items:center; gap:8px; padding:13px 16px; background:linear-gradient(180deg,var(--surface-2),var(--surface-sunk)); border-bottom:1px solid var(--rule); }
.dot{ width:11px; height:11px; border-radius:50%; background:var(--rule-strong); }
.mock-url{ margin-left:14px; font-family:var(--font-data); font-size:12.5px; color:var(--muted); background:var(--paper); border:1px solid var(--rule); border-radius:7px; padding:5px 14px; }
.mock-body{ padding:34px 38px 40px; text-align:left; transform:translateZ(40px); }
.mock-top{ display:flex; justify-content:space-between; align-items:baseline; border-bottom:2px solid var(--ink); padding-bottom:14px; margin-bottom:20px; }
.mock-title{ font-family:var(--font-display); font-size:23px; color:var(--ink); letter-spacing:.01em; }
.mock-org{ font-size:13px; color:var(--muted); }
.mock-table{ width:100%; border-collapse:collapse; font-size:15px; }
.mock-table th{ text-align:left; font-size:10.5px; letter-spacing:.09em; text-transform:uppercase; color:var(--muted); border-bottom:1px solid var(--rule-strong); padding:8px 10px; }
.mock-table td{ padding:11px 10px; border-bottom:1px solid var(--rule); }
.mock-table .num{ font-family:var(--font-data); text-align:right; }
.mock-table .ser{ font-family:var(--font-data); color:var(--brass-deep); }
.mock-derived{ color:var(--brass-deep); }

/* ---- trust strip (right after the hero — the Canada-first story) ---- */
.trust{ padding:60px 0; }
.trust-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:36px; }
.trust-item{ }
.trust-item .mk{ color:var(--brass); font-size:18px; line-height:1; margin-bottom:12px; }
.trust-item h3{ font-family:var(--font-display); font-size:18px; margin:0 0 7px; color:var(--ink); font-weight:600; letter-spacing:.005em; }
.trust-item p{ margin:0; font-size:14.5px; line-height:1.55; color:var(--muted); }

/* ---- feature rows ---- */
.feature{ display:grid; grid-template-columns:1.05fr .95fr; gap:72px; align-items:center; }
.feature + .feature{ margin-top:128px; }
.feature.flip .feature-text{ order:2; }
.feature h3{ font-family:var(--font-display); font-size:30px; margin:0 0 14px; letter-spacing:.01em; color:var(--ink); }
.feature p{ margin:0; color:var(--body); font-size:18px; }
.feature-art{ position:relative; z-index:2; background:linear-gradient(165deg,var(--surface),var(--surface-2)); border:1px solid var(--rule); border-radius:18px; min-height:330px; display:flex; align-items:center; justify-content:center; box-shadow:var(--sh-2); transition:box-shadow .35s; }
.feature-art:hover{ box-shadow:var(--sh-3); }
.chips{ display:flex; flex-wrap:wrap; gap:9px; margin-top:22px; }
.chip{ font-family:var(--font-data); font-size:12px; color:var(--brass-deep); background:var(--surface); border:1px solid var(--rule-strong); border-radius:999px; padding:6px 14px; }

/* ---- founding-clinic quote (the single proof beat) ---- */
.quote{ text-align:center; }
.quote .mk{ color:var(--brass); font-size:30px; line-height:1; }
.quote blockquote{ font-family:var(--font-display); font-size:clamp(26px,3.4vw,38px); line-height:1.32; color:var(--ink); margin:18px auto 0; max-width:900px; letter-spacing:.004em; font-weight:500; }
.quote .cite{ font-family:var(--font-data); font-size:13px; letter-spacing:.05em; color:var(--brass-deep); margin-top:26px; }
.quote .cite .ph{ color:var(--muted); }

/* ---- pricing ---- */
.prices{ display:grid; grid-template-columns:1fr 1fr; gap:28px; max-width:900px; margin:0 auto; }
.price{ background:linear-gradient(170deg,var(--surface),var(--surface-2)); border:1px solid var(--rule-strong); border-radius:16px; padding:40px 36px; transition:transform .3s var(--ease), box-shadow .3s; box-shadow:var(--sh-1); }
.price:hover{ transform:translateY(-6px); box-shadow:var(--sh-3); }
.price.feat{ border-color:var(--brass); box-shadow:var(--sh-2), 0 0 0 1px var(--brass) inset; }
.price .badge{ font-family:var(--font-data); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:#fff; background:var(--brass); border-radius:999px; padding:4px 11px; display:inline-block; margin-bottom:14px; }
.price h3{ font-family:var(--font-display); font-size:25px; margin:0 0 5px; color:var(--ink); }
.price .who{ font-size:14.5px; color:var(--muted); margin:0 0 24px; }
.price .amt{ font-family:var(--font-data); font-size:38px; color:var(--ink); }
.price .per{ font-size:14px; color:var(--muted); }
.price ul{ list-style:none; padding:0; margin:24px 0 30px; }
.price li{ padding:9px 0 9px 26px; position:relative; font-size:15.5px; border-bottom:1px solid var(--rule); }
.price li:before{ content:"◇"; position:absolute; left:2px; color:var(--brass); font-size:11px; top:11px; }
.price .btn{ width:100%; text-align:center; }
.indic{ text-align:center; color:var(--muted); font-size:13.5px; margin-top:22px; }

/* ---- about ---- */
.founders{ display:grid; grid-template-columns:1fr 1fr; gap:30px; margin-top:44px; }
.founder{ background:linear-gradient(170deg,var(--surface),var(--surface-2)); border:1px solid var(--rule); border-radius:16px; padding:34px; transition:transform .3s var(--ease), box-shadow .3s; box-shadow:var(--sh-1); }
.founder:hover{ transform:translateY(-5px); box-shadow:var(--sh-2); }
.founder .nm{ font-family:var(--font-display); font-size:22px; color:var(--ink); letter-spacing:.01em; }
.founder .role{ font-family:var(--font-data); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--brass-deep); margin:3px 0 0; }
.founder-head{ display:flex; align-items:center; gap:16px; margin-bottom:16px; }
.founder-photo{ width:72px; height:72px; border-radius:50%; object-fit:cover; object-position:center; flex:none; border:1px solid var(--rule-strong); box-shadow:var(--sh-1); }
.founder p{ margin:0; font-size:17px; line-height:1.74; color:var(--body); }

/* ---- mission band (the ONE dark statement band, warm) ---- */
.mission{ text-align:center; color:#f4efe6; position:relative; overflow:hidden;
  background:var(--ink-band); }
.mission{ background:radial-gradient(900px 520px at 50% 0% in oklab, var(--ink-band-2), var(--ink-band) 72%); }
.mission .brand-lg{ font-family:var(--font-display); font-size:clamp(52px,8vw,92px); color:#f4efe6; line-height:1; letter-spacing:.02em; }
.mission .stmt{ font-family:var(--font-display); font-size:clamp(22px,2.8vw,30px); color:#e2d6c1; max-width:620px; margin:30px auto 0; line-height:1.45; font-weight:400; letter-spacing:.01em; }
.mission .tag{ font-family:var(--font-data); font-size:12px; letter-spacing:.28em; text-transform:uppercase; color:#b8aa8c; margin-top:34px; }

/* ---- footer ---- */
.foot{ padding:64px 0 44px; background:var(--paper-3); border-top:1px solid var(--rule); }
.foot-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:40px; flex-wrap:wrap; }
.foot .brand{ font-size:24px; }
.foot-cols{ display:flex; gap:72px; flex-wrap:wrap; }
.foot-col h4{ font-family:var(--font-data); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); margin:0 0 14px; font-weight:500; }
.foot-col a{ display:block; text-decoration:none; color:var(--body); font-size:14.5px; padding:5px 0; transition:color .2s; }
.foot-col a:hover{ color:var(--ink); }
.foot-base{ display:flex; justify-content:space-between; align-items:center; gap:16px; margin-top:48px; padding-top:24px; border-top:1px solid var(--rule); flex-wrap:wrap; }
.foot-base .mono{ font-size:12.5px; color:var(--muted); }

/* ---- reveal (opacity + small rise, ~once) ---- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .55s var(--ease), transform .55s var(--ease); }
.reveal.in{ opacity:1; transform:none; }

/* ---- responsive ---- */
@media (max-width:880px){
  .wrap{ padding:0 24px; }
  .feature{ grid-template-columns:1fr; gap:28px; }
  .feature.flip .feature-text{ order:0; }
  .trust-grid{ grid-template-columns:1fr 1fr; gap:30px; }
  .prices{ grid-template-columns:1fr; }
  .founders{ grid-template-columns:1fr; }
  .nav-links a:not(.btn){ display:none; }
  section{ padding:84px 0; }
  .trust{ padding:48px 0; }
  .hero{ padding:60px 0 76px; }
}
@media (max-width:520px){
  .trust-grid{ grid-template-columns:1fr; gap:26px; }
}
@media (prefers-reduced-motion:reduce){
  *{ transition:none !important; scroll-behavior:auto; animation:none !important; }
  .reveal{ opacity:1; transform:none; }
  .mock{ transform:none !important; }
}