/* ============================================================================
   SkyYoke — shared stylesheet for SEO/AEO landing pages.
   Light "boarding pass" theme: white ground, ink type, sky-blue accents,
   serif-italic headline highlights and mono flight-data labels.
   Linked by every keyword subpage as  <link rel="stylesheet" href="assets/skyyoke.css">
   ========================================================================== */

:root{
  --bg:#ffffff; --bg-2:#f5f7fa;
  --surface:#ffffff; --surface-2:#f5f7fa;
  --border:rgba(12,18,28,.10); --border-2:rgba(12,18,28,.17);
  --text:#0b0d12; --ink-soft:#3d4452; --muted:#5b6472; --muted-2:#8a93a1;
  --cyan:#0099ff; --cyan-2:#0066ff; --cyan-ink:#0077e6;
  --amber:#cc7a00; --green:#008a52; --red:#d92d20; --violet:#5b5bff;
  --radius:20px; --maxw:1080px; --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 2px 4px rgba(12,18,28,.04), 0 24px 48px -24px rgba(12,18,28,.16);
  --shadow-sm:0 1px 2px rgba(12,18,28,.05), 0 10px 24px -14px rgba(12,18,28,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  line-height:1.7; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
h1,h2,h3,h4,.font-display{font-family:"Inter",sans-serif;font-weight:700;letter-spacing:-.025em;line-height:1.12;color:var(--text)}
.mono{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
a{color:var(--cyan-ink);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{display:block;max-width:100%}
section{position:relative}

/* serif-italic highlight inside headlines */
.hl{font-family:"EB Garamond",Georgia,serif;font-style:italic;font-weight:500;letter-spacing:0}

/* ---- background ---- */
.bg-fx{position:fixed;inset:0;z-index:-2;background:
  radial-gradient(1100px 560px at 50% -18%, rgba(0,153,255,.07), transparent 62%),
  linear-gradient(180deg,var(--bg),var(--bg))}
.bg-grid{display:none}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--muted)}
.accent{color:var(--cyan-ink)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font:600 11px/1 "IBM Plex Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan-ink);
  padding:8px 14px;border-radius:999px;background:rgba(0,153,255,.07);border:1px solid rgba(0,153,255,.22)}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);animation:blink 1.8s var(--ease) infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}

/* ---- nav ---- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.84);
  backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:18px;letter-spacing:-.02em;color:var(--text)}
.brand:hover{text-decoration:none}
.brand .logo{width:34px;height:34px;border-radius:9px;flex:0 0 auto;object-fit:cover;border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.brand small{display:block;font:500 9.5px/1 "IBM Plex Mono",monospace;color:var(--muted-2);letter-spacing:.16em;text-transform:uppercase;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--muted);transition:color .2s}
.nav-links a:hover{color:var(--text);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:9px;cursor:pointer;border:0;
  font:600 14.5px/1 "Inter",sans-serif;letter-spacing:-.01em;padding:13px 22px;border-radius:999px;
  transition:transform .2s var(--ease),box-shadow .25s,background .2s,color .2s}
.btn-primary{color:#fff;background:var(--cyan);box-shadow:0 8px 20px -8px rgba(0,153,255,.55)}
.btn-primary:hover{transform:translateY(-1px);background:var(--cyan-ink);box-shadow:0 12px 26px -8px rgba(0,153,255,.6);text-decoration:none}
.btn-ghost{color:var(--text);background:#eef1f6;border:1px solid transparent}
.btn-ghost:hover{transform:translateY(-1px);background:#e5eaf1;text-decoration:none}
.nav .btn{padding:11px 19px}

/* ---- breadcrumb ---- */
.crumbs{padding:20px 0 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;font:500 12px/1.6 "IBM Plex Mono",monospace;color:var(--muted-2)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"›";color:var(--muted-2)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan-ink)}
.crumbs [aria-current]{color:var(--text)}

/* ---- hero ---- */
.page-hero{padding:34px 0 14px}
.page-hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;letter-spacing:-.035em;margin:18px 0 0;overflow-wrap:break-word}
.page-hero h1 .hl{font-weight:500}
.lede{font-size:clamp(17px,1.7vw,20px);color:var(--muted);max-width:760px;margin:20px 0 0}
.lede b{color:var(--text);font-weight:600}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* AEO answer box — the quotable definition */
.answer{margin:26px 0 0;padding:22px 24px;border-radius:var(--radius);
  background:rgba(0,153,255,.05);border:1px solid rgba(0,153,255,.18)}
.answer p{margin:0;font-size:17px;color:var(--ink-soft)}
.answer p+p{margin-top:12px}
.answer b{color:var(--cyan-ink)}

/* ---- article / prose ---- */
.article{padding:30px 0 10px}
.prose{max-width:820px}
.prose h2{font-size:clamp(24px,2.8vw,34px);letter-spacing:-.03em;margin:52px 0 14px;font-weight:700}
.prose h2:first-child{margin-top:8px}
.prose h3{font-size:clamp(18px,2vw,22px);margin:30px 0 10px;font-weight:600}
.prose p{margin:0 0 16px;color:var(--ink-soft);font-size:16.5px}
.prose p b,.prose li b{color:var(--text)}
.prose ul,.prose ol{margin:0 0 18px;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.prose ul li{position:relative;padding-left:28px;color:var(--ink-soft);font-size:16px}
.prose ul li::before{content:"";position:absolute;left:6px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--cyan)}
.prose ol{counter-reset:n;padding-left:0}
.prose ol li{position:relative;padding-left:40px;color:var(--ink-soft);font-size:16px}
.prose ol li::before{counter-increment:n;content:counter(n);position:absolute;left:0;top:0;
  width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font:600 12.5px/1 "IBM Plex Mono",monospace;color:var(--cyan-ink);background:rgba(0,153,255,.08);border:1px solid rgba(0,153,255,.24)}
.prose a{text-decoration:underline;text-underline-offset:2px;text-decoration-color:rgba(0,153,255,.4)}
.prose strong{color:var(--text)}
.note{margin:22px 0;padding:16px 18px;border-radius:14px;background:rgba(204,122,0,.06);border:1px solid rgba(204,122,0,.22);font-size:14.5px;color:var(--muted)}
.note b{color:var(--amber)}

/* callout cards row */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card{padding:22px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.card:hover{transform:translateY(-4px);border-color:var(--border-2);box-shadow:var(--shadow)}
.card .ic{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  background:rgba(0,153,255,.09);color:var(--cyan-ink)}
.card h3{font-size:17px;margin:0 0 7px}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.55}

/* app screenshots — aspect ratio is ALWAYS preserved (never one-sided squish) */
.shot{margin:26px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow)}
.shot img{display:block;width:100%;height:auto;aspect-ratio:1344 / 621;object-fit:cover}
.shot figcaption{padding:12px 18px;font-size:13.5px;color:var(--muted);border-top:1px solid var(--border);background:var(--bg-2);line-height:1.5}
.shot figcaption b{color:var(--text)}
.shot .if-only{color:var(--muted-2)}

/* spec table */
.spec{width:100%;border-collapse:collapse;margin:18px 0 24px;font-size:15px;border:1px solid var(--border);border-radius:14px;overflow:hidden}
.spec caption{caption-side:top;text-align:left;font:600 11.5px/1 "IBM Plex Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan-ink);margin-bottom:10px}
.spec th,.spec td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}
.spec th{background:var(--bg-2);color:var(--muted);font-weight:600;width:42%}
.spec td{color:var(--text)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}

/* ---- related links grid ---- */
.related{padding:20px 0 0}
.related h2{font-size:clamp(22px,2.6vw,28px);letter-spacing:-.03em;margin:0 0 18px}
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.link-card{display:block;padding:18px 20px;border-radius:16px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),border-color .25s,box-shadow .25s}
.link-card:hover{transform:translateY(-3px);border-color:rgba(0,153,255,.45);box-shadow:var(--shadow);text-decoration:none}
.link-card .k{display:block;font:500 11px/1 "IBM Plex Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);margin-bottom:8px}
.link-card .t{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15.5px;letter-spacing:-.01em;color:var(--text)}
.link-card .t svg{flex:0 0 auto;color:var(--cyan)}

/* ---- FAQ ---- */
.faq-sec{padding:46px 0 8px}
.faq-sec > h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.03em;margin:0 0 8px}
.faq-sec .sub{color:var(--muted);margin:0 0 26px}
.faq{max-width:840px;display:flex;flex-direction:column;gap:12px}
details{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:4px 22px;box-shadow:var(--shadow-sm);transition:border-color .25s,box-shadow .25s}
details[open]{border-color:var(--border-2);box-shadow:var(--shadow)}
summary{list-style:none;cursor:pointer;padding:18px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-weight:600;font-size:16.5px;letter-spacing:-.01em;color:var(--text)}
summary::-webkit-details-marker{display:none}
summary .pm{flex:0 0 auto;width:24px;height:24px;border-radius:50%;border:1px solid rgba(0,153,255,.35);display:flex;align-items:center;justify-content:center;transition:transform .3s var(--ease),background .3s;color:var(--cyan-ink);font-family:"IBM Plex Mono",monospace}
details[open] summary .pm{transform:rotate(45deg);background:rgba(0,153,255,.1)}
details .ans{padding:0 0 20px;color:var(--muted);font-size:15.5px;line-height:1.7}
details .ans p{margin:0 0 12px}
details .ans p:last-child{margin:0}

/* ---- final CTA — the deep-blue boarding call ---- */
.cta-final{position:relative;margin:60px 0 0;padding:54px 36px;border-radius:28px;text-align:center;overflow:hidden;
  background:linear-gradient(155deg,#00a3ff,#005ce6);border:0;box-shadow:0 30px 60px -28px rgba(0,102,230,.55)}
.cta-final .glowline{position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.8),transparent)}
.cta-final h2{font-size:clamp(26px,3.6vw,40px);letter-spacing:-.03em;margin:14px 0 12px;color:#fff}
.cta-final p{color:rgba(255,255,255,.85);font-size:16.5px;max-width:560px;margin:0 auto 24px}
.cta-final .eyebrow{color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35)}
.cta-final .eyebrow .dot{background:#fff}
.cta-final .btn-primary{color:var(--cyan-ink);background:#fff;box-shadow:0 10px 24px -10px rgba(0,30,80,.5)}
.cta-final .btn-primary:hover{background:#f2f9ff}
.signup{margin:0 auto;max-width:520px}
.signup-row{display:flex;gap:10px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:7px;box-shadow:var(--shadow-sm);transition:border-color .25s,box-shadow .25s}
.signup-row:focus-within{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(0,153,255,.14)}
.signup input[type=email]{flex:1;min-width:0;background:transparent;border:0;outline:0;color:var(--text);font-size:15.5px;padding:12px 18px;font-family:inherit}
.signup input::placeholder{color:var(--muted-2)}
.signup .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{margin-top:12px;font-size:14px;min-height:20px;font-weight:500}
.form-msg.ok{color:var(--green)}
.form-msg.err{color:var(--red)}
.cta-final .form-msg.ok{color:#d9fbe9}
.cta-final .form-msg.err{color:#ffe2de}
.signup.done .signup-row{border-color:var(--green);box-shadow:0 0 0 4px rgba(0,138,82,.14)}

/* ---- footer ---- */
footer{padding:56px 0 40px;border-top:1px solid var(--border);margin-top:60px;background:var(--bg-2)}
.signoff{font-family:"EB Garamond",Georgia,serif;font-style:italic;font-weight:500;font-size:clamp(26px,3.4vw,38px);color:var(--text);margin:0 0 34px;letter-spacing:-.01em}
.foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.foot-brand{max-width:360px}
.foot-brand p{color:var(--muted);font-size:14px;margin:14px 0 0}
.foot-cols{display:flex;gap:54px;flex-wrap:wrap}
.foot-col h4{font:500 11px/1 "IBM Plex Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);margin:0 0 14px}
.foot-col a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px}
.foot-col a:hover{color:var(--text);text-decoration:none}
.disclaimer{margin-top:30px;padding:18px 20px;border-radius:14px;background:rgba(217,45,32,.05);border:1px solid rgba(217,45,32,.16);font-size:12.5px;color:var(--muted);line-height:1.6}
.disclaimer b{color:var(--red)}
.foot-bottom{margin-top:30px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center;color:var(--muted-2);font-size:13px}
.foot-bottom a{color:var(--muted)}
.foot-bottom a:hover{color:var(--text)}

/* ---- responsive ---- */
@media(max-width:880px){
  .cards,.cards.two,.link-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media(max-width:560px){
  .cards,.cards.two,.link-grid{grid-template-columns:1fr}
  .signup-row{flex-direction:column;border-radius:24px}
  .signup .btn{justify-content:center}
  .foot-grid{flex-direction:column}
  .foot-cols{gap:32px}
  .brand small{display:none}
  .spec th{width:50%}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important;transition:none!important}
}

/* ---- dark mode (follows the system setting) ---- */
:root{color-scheme:light}
@media (prefers-color-scheme: dark){
  :root{
    color-scheme:dark;
    --bg:#0b0e14; --bg-2:#11151d;
    --surface:#12161f; --surface-2:#181d28;
    --border:rgba(236,243,255,.10); --border-2:rgba(236,243,255,.18);
    --text:#f2f5fa; --ink-soft:#c6cdd9; --muted:#9aa4b5; --muted-2:#69748a;
    --cyan-ink:#4db8ff;
    --amber:#ffb84d; --green:#3ddc97; --red:#ff7a85; --violet:#8b8cff;
    --shadow:0 2px 4px rgba(0,0,0,.4), 0 24px 48px -24px rgba(0,0,0,.65);
    --shadow-sm:0 1px 2px rgba(0,0,0,.35), 0 10px 24px -14px rgba(0,0,0,.55);
  }
  .bg-fx{background:radial-gradient(1100px 560px at 50% -18%, rgba(0,153,255,.10), transparent 62%),linear-gradient(180deg,var(--bg),var(--bg))}
  .nav{background:rgba(11,14,20,.82)}
  .eyebrow{background:rgba(0,153,255,.12);border-color:rgba(0,153,255,.32)}
  .btn-ghost{background:var(--surface-2)}
  .btn-ghost:hover{background:#1f2531}
  .card .ic{background:rgba(0,153,255,.14)}
  .answer{background:rgba(0,153,255,.09);border-color:rgba(0,153,255,.26)}
  .note{background:rgba(255,184,77,.08);border-color:rgba(255,184,77,.26)}
  .signup-row{background:var(--surface-2);border-color:var(--border-2)}
  .cta-final .signup-row{background:#fff;border-color:transparent}
  .cta-final .signup input[type=email]{color:#0b0d12}
  .cta-final .btn-primary{color:#0077e6}
  .disclaimer{background:rgba(255,122,133,.07);border-color:rgba(255,122,133,.22)}
}