/* ============================================================
   ThankAI — hi-fi site styles
   Visual language pulled from the AirAudio Streamer app:
   white cards on light-grey, bright blue accent, green status,
   red stop/power, soft shadows, tinted circular device icons.
   ============================================================ */

:root{
  --bg:#f3f4f6;
  --bg-2:#eceef2;
  --card:#ffffff;
  --ink:#16181d;
  --ink-2:#3c3f47;
  --muted:#8c8f98;
  --line:#e9eaee;
  --line-2:#dfe1e7;

  --blue:#0a84ff;
  --blue-press:#0066d6;
  --blue-tint:#e7f1ff;
  --green:#2eb872;
  --green-tint:#e4f6ec;
  --red:#fa3b2d;
  --red-tint:#ffe9e6;
  --lilac:#e9e6f7;

  --radius:24px;
  --radius-sm:16px;
  --shadow-sm:0 1px 2px rgba(20,22,30,.05), 0 2px 8px rgba(20,22,30,.04);
  --shadow:0 6px 24px rgba(22,24,40,.08), 0 1px 3px rgba(22,24,40,.05);
  --shadow-lg:0 28px 70px rgba(22,24,50,.16), 0 8px 24px rgba(22,24,40,.08);

  --maxw:1160px;
  --font:'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  line-height:1.5;
}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}

/* ---------- type ---------- */
.display{
  font-weight:800;letter-spacing:-.035em;line-height:.98;
  font-size:clamp(40px,6.4vw,78px);
}
.h1{font-weight:800;letter-spacing:-.03em;line-height:1.02;font-size:clamp(32px,4.4vw,52px);}
.h2{font-weight:800;letter-spacing:-.025em;line-height:1.05;font-size:clamp(26px,3vw,38px);}
.h3{font-weight:700;letter-spacing:-.02em;line-height:1.15;font-size:22px;}
.lede{font-size:clamp(17px,1.5vw,20px);color:var(--ink-2);line-height:1.55;font-weight:400;}
.kicker{
  font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);
}
.muted{color:var(--muted);}
.bal{text-wrap:balance;}
.pretty{text-wrap:pretty;}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
section{padding:clamp(64px,9vw,120px) 0;}
.stack{display:flex;flex-direction:column;}
.row{display:flex;}
.center{align-items:center;}
.between{justify-content:space-between;}
.wrapf{flex-wrap:wrap;}
.grid{display:grid;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font);font-weight:700;font-size:15px;letter-spacing:-.01em;
  padding:14px 24px;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .12s ease, background .15s ease, box-shadow .15s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(10,132,255,.32);}
.btn-primary:hover{background:var(--blue-press);box-shadow:0 8px 22px rgba(10,132,255,.4);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2);}
.btn-ghost:hover{border-color:var(--ink);background:#fff;}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:#000;}
.btn svg{width:17px;height:17px;}

/* ---------- nav ---------- */
header.nav{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .2s, background .2s;
}
header.nav.scrolled{border-color:var(--line);background:color-mix(in srgb, var(--bg) 90%, transparent);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;letter-spacing:-.03em;cursor:pointer;}
.brand .logo{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(145deg,var(--blue),#5ab0ff);
  display:grid;place-items:center;box-shadow:0 4px 12px rgba(10,132,255,.34);
}
.brand .logo svg{width:17px;height:17px;color:#fff;}
.nav-links{display:flex;gap:30px;margin-left:18px;}
.nav-links a{font-weight:500;font-size:15px;color:var(--ink-2);transition:color .15s;}
.nav-links a:hover{color:var(--ink);}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:14px;}

/* ---------- generic card ---------- */
.card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
}

/* ---------- pill / chip ---------- */
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-weight:600;font-size:13px;color:var(--ink-2);
  background:#fff;border:1px solid var(--line-2);border-radius:999px;padding:7px 14px;
}
.chip.tint{background:var(--blue-tint);border-color:transparent;color:var(--blue-press);}

/* ---------- eyebrow rule ---------- */
.eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.eyebrow .ln{height:1px;width:34px;background:var(--blue);opacity:.5;}

/* ============================================================
   PHONE MOCKUP  (faithful AirAudio app recreation)
   ============================================================ */
.phone{
  width:300px;flex:0 0 auto;border-radius:42px;background:#0c0d10;
  padding:11px;box-shadow:var(--shadow-lg);position:relative;
}
.phone.lg{width:330px;}
.phone .screen{
  background:#f3f4f6;border-radius:32px;overflow:hidden;position:relative;
  aspect-ratio:9/19.3;display:flex;flex-direction:column;
}
.phone .statusbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 22px 4px;font-size:13px;font-weight:700;color:#1a1a1a;
}
.phone .statusbar .sb-r{display:flex;gap:6px;align-items:center;}
.phone .statusbar .sb-r .bars{width:16px;height:11px;}
.phone .statusbar .sb-r .batt{width:22px;height:11px;border:1.5px solid #1a1a1a;border-radius:3px;position:relative;padding:1.5px;}
.phone .statusbar .sb-r .batt::after{content:"";position:absolute;right:-3px;top:3px;width:2px;height:4px;background:#1a1a1a;border-radius:0 1px 1px 0;}
.phone .statusbar .sb-r .batt i{display:block;height:100%;width:72%;background:#1a1a1a;border-radius:1px;}
.app{flex:1;overflow:hidden;padding:6px 16px 14px;display:flex;flex-direction:column;}

.app-toolbar{display:flex;justify-content:flex-end;gap:18px;padding:6px 2px 10px;}
.app-toolbar svg{width:21px;height:21px;color:var(--blue);}
.app-toolbar svg.pwr{color:var(--red);}
.app-title{font-size:30px;font-weight:800;letter-spacing:-.03em;margin:2px 0 2px;}
.app-sub{font-size:14px;color:var(--muted);margin-bottom:14px;font-weight:500;}

.dev{
  display:flex;align-items:center;gap:13px;background:#fff;border-radius:18px;
  padding:14px 15px;margin-bottom:12px;box-shadow:0 1px 3px rgba(20,22,30,.06);
}
.dev .ico{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;}
.dev .ico.blue{background:var(--blue-tint);color:var(--blue);}
.dev .ico.green{background:var(--green-tint);color:var(--green);}
.dev .ico svg{width:23px;height:23px;}
.dev .meta{flex:1;min-width:0;}
.dev .meta .nm{font-weight:700;font-size:16px;letter-spacing:-.01em;}
.dev .meta .ds{font-size:13px;color:var(--muted);font-weight:500;}
.dev .meta .ds.green{color:var(--green);font-weight:600;}
.dev .meta .ds.red{color:var(--red);font-weight:600;}
.dev .radio{width:23px;height:23px;border-radius:50%;border:2px solid #c9ccd3;flex:0 0 auto;}
.dev .radio.on{border-color:var(--blue);background:radial-gradient(circle at center, var(--blue) 42%, transparent 46%);}
.dev .stopbtn{width:22px;height:22px;border-radius:6px;background:var(--red);flex:0 0 auto;}

.dev-col{display:block;}
.dev-col .top{display:flex;align-items:center;gap:13px;}
.vol-label{font-size:13px;color:var(--muted);font-weight:600;margin:14px 0 8px;}
.slider{position:relative;height:8px;border-radius:999px;background:var(--lilac);}
.slider .fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:var(--blue);}
.slider .knob{position:absolute;top:50%;width:5px;height:20px;border-radius:3px;background:var(--blue);transform:translate(-50%,-50%);}
.opt-link{color:var(--blue);font-weight:700;font-size:14px;margin-top:13px;}

.app-bottom{margin-top:auto;padding-top:12px;}
.bigbtn{
  width:100%;border:none;border-radius:999px;padding:16px;font-family:var(--font);
  font-weight:700;font-size:16px;color:#fff;
}
.bigbtn.blue{background:var(--blue);}
.bigbtn.red{background:var(--red);}
.app-head{display:flex;align-items:center;gap:14px;padding:6px 2px 4px;}
.app-head .bk{color:var(--blue);width:22px;height:22px;}
.app-head .ttl{font-size:24px;font-weight:800;letter-spacing:-.02em;}
.app-head .pwr{color:var(--red);width:22px;height:22px;margin-left:auto;}
.stream-status{color:var(--green);font-weight:600;font-size:14px;margin:8px 2px 14px;}

/* ============================================================
   HOME — feature/process/work
   ============================================================ */
.hero{padding-top:clamp(40px,6vw,76px);padding-bottom:clamp(56px,7vw,96px);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-foot{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap;}
.hero-foot .stat .n{font-weight:800;font-size:26px;letter-spacing:-.02em;}
.hero-foot .stat .l{font-size:13px;color:var(--muted);font-weight:500;}
.hero-visual{position:relative;display:flex;justify-content:center;}
.hero-glow{
  position:absolute;inset:-8% -4% 0 -4%;z-index:0;border-radius:50%;
  background:radial-gradient(closest-side, rgba(10,132,255,.18), transparent 72%);
  filter:blur(6px);
}
.hero-visual .phone{position:relative;z-index:1;}
.float-card{
  position:absolute;z-index:2;background:#fff;border-radius:16px;box-shadow:var(--shadow);
  padding:13px 16px;display:flex;align-items:center;gap:11px;font-weight:600;font-size:14px;
  border:1px solid var(--line);
}
.float-card .dot{width:9px;height:9px;border-radius:50%;}

/* logos / trust strip */
.trust{padding:0 0 clamp(40px,5vw,64px);}
.trust .lbl{text-align:center;font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.04em;margin-bottom:22px;}
.trust .logos{display:flex;justify-content:center;gap:clamp(24px,5vw,64px);flex-wrap:wrap;align-items:center;opacity:.62;}
.trust .logos span{font-weight:800;font-size:20px;letter-spacing:-.02em;color:var(--ink-2);}

/* value props */
.props{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.prop{padding:30px;}
.prop .pico{width:48px;height:48px;border-radius:14px;background:var(--blue-tint);color:var(--blue);display:grid;place-items:center;margin-bottom:20px;}
.prop .pico svg{width:24px;height:24px;}
.prop h3{margin:0 0 8px;}
.prop p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.55;}

/* process */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;counter-reset:step;}
.step{position:relative;padding-top:30px;border-top:2px solid var(--line-2);}
.step .num{
  font-weight:800;font-size:14px;color:var(--blue);font-variant-numeric:tabular-nums;
  letter-spacing:.08em;margin-bottom:14px;
}
.step h3{margin:0 0 10px;}
.step p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.55;}

/* featured */
.featured{background:var(--ink);color:#fff;border-radius:var(--radius);overflow:hidden;}
.featured-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch;}
.featured .left{padding:clamp(36px,4vw,60px);display:flex;flex-direction:column;justify-content:center;}
.featured .right{
  background:linear-gradient(160deg,#1c1f27,#101218);
  display:flex;align-items:center;justify-content:center;padding:48px 20px;position:relative;
}
.featured .kicker{color:#5ab0ff;}
.featured h2{color:#fff;margin:14px 0 16px;}
.featured p{color:#b9bdc7;font-size:16px;line-height:1.6;margin:0 0 26px;max-width:440px;}
.featured .chips{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:30px;}
.featured .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);color:#dfe2ea;}
.featured .ringlite{
  position:absolute;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(closest-side, rgba(10,132,255,.3), transparent 70%);
}

/* work grid */
.work{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.work-card{overflow:hidden;cursor:pointer;transition:transform .18s ease, box-shadow .18s ease;}
.work-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.work-card .thumb{aspect-ratio:4/3;display:grid;place-items:center;position:relative;overflow:hidden;}
.work-card .thumb svg{width:64px;height:64px;opacity:.9;}
.work-card .body{padding:20px 22px 24px;}
.work-card .body .t{font-weight:700;font-size:17px;letter-spacing:-.01em;}
.work-card .body .d{font-size:14px;color:var(--muted);margin-top:3px;font-weight:500;}
.work-card .body .tag{font-size:12px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;display:block;}

/* CTA band */
.ctaband{
  background:linear-gradient(135deg,var(--blue),#3aa0ff);
  border-radius:var(--radius);padding:clamp(40px,5vw,68px);
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  color:#fff;box-shadow:0 24px 60px rgba(10,132,255,.28);
}
.ctaband h2{color:#fff;margin:0 0 8px;}
.ctaband p{margin:0;color:rgba(255,255,255,.9);font-size:17px;}
.ctaband .btn-primary{background:#fff;color:var(--blue-press);box-shadow:0 8px 20px rgba(0,0,0,.16);}
.ctaband .btn-primary:hover{background:#fff;color:var(--blue-press);transform:translateY(-2px);}

/* footer */
footer{background:var(--ink);color:#cfd2da;padding:64px 0 40px;margin-top:8px;}
.foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;}
footer .brand{color:#fff;}
footer .fcol h4{color:#fff;font-size:14px;margin:0 0 14px;font-weight:700;}
footer .fcol a{display:block;color:#9498a3;font-size:14px;margin-bottom:9px;font-weight:500;}
footer .fcol a:hover{color:#fff;}
.foot-bottom{border-top:1px solid #262a33;margin-top:48px;padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7d818c;}

/* ============================================================
   PROJECT PAGE
   ============================================================ */
.page{display:none;}
.page.active{display:block;animation:rise .38s ease both;}
@keyframes rise{from{transform:translateY(8px);}to{transform:none;}}
@media (prefers-reduced-motion:reduce){.page.active{animation:none;}}

.proj-hero{padding-top:clamp(40px,5vw,72px);padding-bottom:clamp(28px,3vw,40px);}
.backlink{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-weight:700;font-size:15px;margin-bottom:26px;cursor:pointer;}
.backlink svg{width:16px;height:16px;}
.proj-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);padding:26px 0;margin:36px 0 0;}
.proj-meta .m .k{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:6px;}
.proj-meta .m .v{font-weight:700;font-size:16px;letter-spacing:-.01em;}

.proj-cover{
  border-radius:var(--radius);overflow:hidden;background:linear-gradient(160deg,#eaf2fb,#dde9f8);
  display:flex;align-items:center;justify-content:center;gap:34px;padding:clamp(36px,5vw,68px) 20px;position:relative;
}
.proj-cover .ring{position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(closest-side,rgba(10,132,255,.16),transparent 70%);}

.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);}
.prose p{color:var(--ink-2);font-size:16px;line-height:1.65;margin:0 0 16px;}
.prose p:last-child{margin-bottom:0;}

.screens{display:flex;gap:34px;justify-content:center;flex-wrap:wrap;align-items:flex-start;}
.screen-item{display:flex;flex-direction:column;align-items:center;gap:16px;max-width:300px;}
.screen-item .cap{text-align:center;}
.screen-item .cap .t{font-weight:700;font-size:16px;}
.screen-item .cap .d{font-size:14px;color:var(--muted);margin-top:3px;}

.build-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.build-card{padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);}
.build-card .bn{width:40px;height:40px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:18px;}
.build-card h3{margin:0 0 8px;}
.build-card p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.55;}

.tech-list{display:flex;flex-wrap:wrap;gap:10px;}

/* ============================================================
   DOWNLOAD PAGE
   ============================================================ */
.dl-hero{padding-top:clamp(40px,5vw,72px);padding-bottom:clamp(32px,4vw,48px);text-align:center;}
.dl-hero .eyebrow{justify-content:center;}

.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch;}
.dl-card{position:relative;padding:clamp(28px,3vw,40px);display:flex;flex-direction:column;overflow:hidden;}
.dl-card.primary{border:1.5px solid var(--blue);box-shadow:0 12px 40px rgba(10,132,255,.14);}
.dl-card .ribbon{
  position:absolute;top:20px;right:-34px;transform:rotate(45deg);
  background:var(--blue);color:#fff;font-weight:800;font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;padding:6px 40px;box-shadow:0 4px 10px rgba(10,132,255,.3);
}
.dl-card .dl-icon{
  width:58px;height:58px;border-radius:16px;display:grid;place-items:center;margin-bottom:22px;flex:0 0 auto;
}
.dl-card .dl-icon.android{background:var(--green-tint);color:var(--green);}
.dl-card .dl-icon.relay{background:var(--blue-tint);color:var(--blue);}
.dl-card .dl-icon svg{width:30px;height:30px;}
.dl-card .dl-kicker{font-weight:700;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;}
.dl-card h3{margin:0 0 10px;font-size:24px;}
.dl-card .dl-desc{color:var(--ink-2);font-size:15px;line-height:1.55;margin:0 0 22px;}
.dl-card .dl-spec{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:26px;font-size:13px;color:var(--muted);font-weight:600;}
.dl-card .dl-spec .s{display:flex;align-items:center;gap:6px;}
.dl-card .dl-spec .s svg{width:15px;height:15px;color:var(--green);}
.dl-card .dl-actions{margin-top:auto;display:flex;flex-direction:column;gap:12px;}

/* store-style button */
.store-btn{
  display:inline-flex;align-items:center;gap:13px;background:var(--ink);color:#fff;
  border-radius:14px;padding:12px 22px;font-family:var(--font);cursor:pointer;
  border:none;transition:transform .12s ease, background .15s;text-align:left;width:fit-content;
}
.store-btn:hover{background:#000;transform:translateY(-1px);}
.store-btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;}
.store-btn[aria-disabled="true"]:hover{transform:none;background:var(--ink);}
.store-btn svg{width:26px;height:26px;flex:0 0 auto;}
.store-btn .lbl{display:flex;flex-direction:column;line-height:1.15;}
.store-btn .lbl .sm{font-size:11px;font-weight:500;opacity:.8;letter-spacing:.02em;}
.store-btn .lbl .bg{font-size:18px;font-weight:700;letter-spacing:-.01em;}
.store-note{font-size:13px;color:var(--muted);font-weight:500;display:flex;align-items:center;gap:7px;}
.store-note svg{width:15px;height:15px;}

.notify{display:flex;gap:8px;max-width:340px;}
.notify input{
  flex:1;min-width:0;border:1.5px solid var(--line-2);border-radius:12px;padding:11px 14px;
  font-family:var(--font);font-size:14px;color:var(--ink);background:#fff;outline:none;transition:border-color .15s;
}
.notify input:focus{border-color:var(--blue);}
.notify .btn{padding:11px 18px;font-size:14px;}

/* relay explainer */
.relay-ex{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.relay-col{padding:30px;border-radius:var(--radius);border:1px solid var(--line);}
.relay-col.no{background:var(--green-tint);border-color:transparent;}
.relay-col.yes{background:var(--blue-tint);border-color:transparent;}
.relay-col .rh{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.relay-col .rh .badge{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;flex:0 0 auto;}
.relay-col.no .rh .badge{background:var(--green);}
.relay-col.yes .rh .badge{background:var(--blue);}
.relay-col .rh .badge svg{width:19px;height:19px;}
.relay-col .rh .t{font-weight:800;font-size:18px;letter-spacing:-.01em;}
.relay-col ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px;}
.relay-col li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:var(--ink-2);line-height:1.45;}
.relay-col li svg{width:18px;height:18px;flex:0 0 auto;margin-top:1px;}
.relay-col.no li svg{color:var(--green);}
.relay-col.yes li svg{color:var(--blue);}

/* requirements */
.reqs{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.req{padding:26px;text-align:left;}
.req .ri{width:44px;height:44px;border-radius:12px;background:var(--bg-2);color:var(--ink);display:grid;place-items:center;margin-bottom:16px;}
.req .ri svg{width:22px;height:22px;}
.req .rt{font-weight:700;font-size:16px;margin-bottom:5px;}
.req .rd{font-size:14px;color:var(--muted);line-height:1.5;}

/* faq */
.faq{max-width:760px;margin:0 auto;}
.faq details{border-bottom:1px solid var(--line-2);padding:4px 0;}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 0;font-weight:700;font-size:18px;letter-spacing:-.01em;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .pm{width:22px;height:22px;flex:0 0 auto;transition:transform .2s;color:var(--blue);}
.faq details[open] summary .pm{transform:rotate(45deg);}
.faq .ans{padding:0 0 22px;color:var(--ink-2);font-size:15px;line-height:1.6;max-width:660px;}

/* responsive */
@media (max-width:920px){
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .featured-grid{grid-template-columns:1fr;}
  .props,.steps,.work,.build-steps{grid-template-columns:1fr;}
  .dl-grid,.relay-ex,.reqs{grid-template-columns:1fr;}
  .proj-meta{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .nav-links{display:none;}
}
@media (max-width:560px){
  .wrap{padding:0 18px;}
  .hero-foot{gap:18px;}
  .proj-meta{grid-template-columns:1fr 1fr;}
}

/* tweak: density */
body.cozy section{padding:clamp(48px,6vw,84px) 0;}