/* FunctionOps — marketing site styles
   Light, editorial, typographic. Hairlines over shadows; serif display over gradients. */

:root{
  /* Palette mirrors the iOS app's MCColor tokens (light appearance) so the
     site and the product read as one brand. Do not invent new blues here. */
  --paper:#F7F8FA;        /* MCBackground */
  --surface:#FFFFFF;      /* MCSurface   */
  --panel:#EDEFF3;        /* tinted section band, one step down from paper */
  --ink:#10151F;          /* MCTextPrimary   */
  --ink-2:#3A424F;        /* between primary and secondary, for body copy */
  --muted:#5B6472;        /* MCTextSecondary */
  --rule:#E4E7EC;         /* MCBorder */
  --rule-strong:#CDD3DB;
  --accent:#1B749B;       /* MCAccent — UI accent, links, numerals */
  --accent-2:#196B8F;     /* MCLink / pressed */
  --mark:#3AACDD;         /* the app-icon blue — the logo mark only */
  /* SF Pro is the app's typeface; Inter is the closest cross-platform
     fallback so non-Apple browsers keep the same proportions. */
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Inter",system-ui,"Segoe UI",sans-serif;
  --gut:32px;
  --max:1180px;
}

*,*::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(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:400;}
p{margin:0;}
ul{margin:0;}

/* ---------- layout ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut);}
.wrap-narrow{max-width:820px;margin:0 auto;padding:0 var(--gut);}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--panel{background:var(--panel);}
.rule-top{border-top:1px solid var(--rule);}

/* two-column editorial split: sticky label left, content right */
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:64px;}
.split__aside .h2{font-size:clamp(25px,2.8vw,33px);}
.split__aside{position:sticky;top:112px;align-self:start;}
@media (max-width:900px){
  .split{grid-template-columns:1fr;gap:28px;}
  .split__aside{position:static;}
}

/* ---------- type ---------- */
/* Weights and tracking mirror MCTypography: heavy, tightly-tracked titles;
   regular running text. No serif — SF Pro is the product's typeface. */
.eyebrow{
  font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin:0 0 18px;display:block;
}
.eyebrow--rule{padding-top:14px;border-top:1px solid var(--rule-strong);}
.display{
  font-weight:700;font-size:clamp(36px,5.4vw,60px);
  line-height:1.05;letter-spacing:-0.032em;
}
.h2{
  font-weight:700;font-size:clamp(27px,3.6vw,40px);
  line-height:1.12;letter-spacing:-0.026em;
}
.h3{font-weight:650;font-size:21px;line-height:1.25;letter-spacing:-0.018em;}
.h4{font-size:16px;font-weight:600;letter-spacing:-0.005em;}
.lede{font-size:clamp(17px,2vw,19.5px);line-height:1.6;color:var(--ink-2);max-width:58ch;}
.body{font-size:16.5px;line-height:1.68;color:var(--ink-2);max-width:66ch;}
.small{font-size:14px;color:var(--muted);}
.caption{font-size:12.5px;color:var(--muted);letter-spacing:.01em;}
.num{font-size:12.5px;font-weight:650;letter-spacing:.08em;color:var(--accent);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-size:15px;font-weight:600;letter-spacing:-0.005em;
  padding:13px 22px;border-radius:11px;text-decoration:none;
  border:1px solid transparent;transition:background .18s,color .18s,border-color .18s;
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:#fff;}
.btn--primary:hover{background:var(--accent-2);}
.btn--ghost{border-color:var(--rule-strong);color:var(--ink);background:transparent;}
.btn--ghost:hover{border-color:var(--ink);background:rgba(0,0,0,0.02);}
.btn--light{background:var(--surface);color:var(--ink);}
.btn--light:hover{background:#fff;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.link-arrow{
  color:var(--accent);text-decoration:none;font-weight:600;font-size:15px;
  border-bottom:1px solid rgba(27,116,155,.3);padding-bottom:2px;
}
.link-arrow:hover{border-bottom-color:var(--accent);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(247,248,250,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rule);
}
.site-header__inner{
  max-width:var(--max);margin:0 auto;padding:0 var(--gut);height:66px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;}
.brand__logo{display:block;flex:none;}
.brand__mark{font-size:17.5px;font-weight:650;letter-spacing:-0.024em;color:var(--ink);}

.nav{display:flex;align-items:center;gap:30px;}
.nav a{
  font-size:14px;color:var(--ink-2);text-decoration:none;letter-spacing:-0.005em;
  padding-bottom:2px;border-bottom:1px solid transparent;
}
.nav a:hover{color:var(--ink);border-bottom-color:var(--rule-strong);}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--ink);}
.header-cta{font-size:14px;font-weight:550;text-decoration:none;color:var(--ink);
  border:1px solid var(--rule-strong);padding:9px 16px;border-radius:10px;white-space:nowrap;background:var(--surface);}
.header-cta:hover{border-color:var(--ink);}
.menu-btn{display:none;background:none;border:none;padding:8px;margin:-8px;cursor:pointer;color:var(--ink);}
.mobile-menu{display:none;flex-direction:column;padding:2px var(--gut) 16px;border-top:1px solid var(--rule);}
.mobile-menu.is-open{display:flex;}
.mobile-menu a{
  font-size:15px;text-decoration:none;color:var(--ink-2);padding:14px 0;
  border-bottom:1px solid var(--rule);
}
.mobile-menu a:last-child{border-bottom:none;color:var(--accent);font-weight:600;}
@media (max-width:800px){
  .nav,.header-cta{display:none !important;}
  .menu-btn{display:block;}
}

/* ---------- hero ---------- */
.hero{padding:72px 0 0;}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:64px;align-items:center;}
.hero__note{
  margin-top:34px;padding-top:18px;border-top:1px solid var(--rule);
  display:flex;gap:26px;flex-wrap:wrap;
}
.hero__note div{font-size:13px;color:var(--muted);max-width:22ch;line-height:1.5;}
@media (max-width:900px){
  .hero{padding-top:56px;}
  .hero__grid{grid-template-columns:1fr;gap:44px;}
}

/* ---------- device frames ---------- */
.device{
  border:1px solid var(--rule);border-radius:28px;padding:7px;background:var(--surface);
  box-shadow:0 1px 2px rgba(16,21,31,.04),0 18px 40px -24px rgba(16,21,31,.20);
}
.device img{border-radius:20px;}
.device--sm{border-radius:20px;padding:5px;}
.device--sm img{border-radius:16px;}
.device-stack{display:flex;gap:22px;align-items:flex-start;}
.device-stack .device{flex:1;min-width:0;}
.device-stack .device:nth-child(2){margin-top:38px;}
@media (max-width:600px){.device-stack .device:nth-child(2){display:none;}}

/* ---------- list rows (replaces feature cards) ---------- */
.rows{border-top:1px solid var(--rule);}
.row{
  display:grid;grid-template-columns:minmax(0,34px) minmax(0,240px) minmax(0,1fr);
  gap:24px;padding:26px 0;border-bottom:1px solid var(--rule);align-items:baseline;
}
/* A row with no numeral drops the marker column entirely rather than
   reserving an empty gutter for it. */
.row:has(> .num:empty){grid-template-columns:minmax(0,240px) minmax(0,1fr);}
.row > .num:empty{display:none;}
.row__t{font-size:16.5px;font-weight:600;letter-spacing:-0.008em;}
.row__d{font-size:15.5px;color:var(--ink-2);line-height:1.62;max-width:58ch;}
@media (max-width:760px){
  .row{grid-template-columns:28px 1fr;gap:8px 16px;}
  .row__d{grid-column:2;}
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--rule);}
.step{padding:30px 32px 34px;border-right:1px solid var(--rule);}
.step:last-child{border-right:none;}
.step:first-child{padding-left:0;}
.step__n{font-size:13px;font-weight:600;color:var(--muted);line-height:1;margin-bottom:14px;}
.step h3{margin:16px 0 10px;}
@media (max-width:820px){
  .steps{grid-template-columns:1fr;}
  .step{border-right:none;border-bottom:1px solid var(--rule);padding:26px 0 30px;}
  .step:last-child{border-bottom:none;}
}

/* ---------- gallery ---------- */
.gallery{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 0 24px;
  scrollbar-width:none;-ms-overflow-style:none;}
.gallery::-webkit-scrollbar{display:none;}
.gallery figure{margin:0;flex:0 0 236px;scroll-snap-align:start;}
.gallery figcaption{margin-top:12px;font-size:13px;color:var(--muted);}
.gallery-nav{display:flex;gap:8px;}
.gallery-nav button{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--rule-strong);
  background:transparent;cursor:pointer;color:var(--ink);display:flex;align-items:center;
  justify-content:center;transition:border-color .18s,background .18s;
}
.gallery-nav button:hover{border-color:var(--ink);background:rgba(0,0,0,.02);}

/* ---------- closing CTA band ---------- */
.cta-band{background:var(--panel);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);}
.cta-band__inner{
  padding:92px 0;display:flex;flex-direction:column;align-items:center;
  text-align:center;gap:22px;
}
.cta-band__inner > div{display:flex;flex-direction:column;align-items:center;gap:16px;}
.cta-band__inner .h2{max-width:30ch;}
.cta-band__inner .body,.cta-band__inner .lede{margin-inline:auto;max-width:54ch;}
/* the hairline above an eyebrow is for section openers, not this band */
.cta-band__inner .eyebrow--rule{border-top:none;padding-top:0;margin-bottom:0;}
@media (max-width:820px){.cta-band__inner{padding:68px 0;}}

/* ---------- subnav (platform) ---------- */
.subnav{
  position:sticky;top:66px;z-index:90;background:rgba(247,248,250,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rule);
}
.subnav__inner{
  max-width:var(--max);margin:0 auto;padding:0 var(--gut);display:flex;gap:32px;
  justify-content:center;overflow-x:auto;scrollbar-width:none;
}
.subnav__inner::-webkit-scrollbar{display:none;}
.subnav a{
  padding:15px 0;font-size:13px;letter-spacing:.02em;color:var(--muted);
  text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent;margin-bottom:-1px;
}
.subnav a:hover{color:var(--ink);}
.subnav a.is-active{color:var(--ink);border-bottom-color:var(--accent);}
@media (max-width:900px){.subnav__inner{justify-content:flex-start;gap:26px;}}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--rule);}
.faq details{border-bottom:1px solid var(--rule);}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 0;font-size:16.5px;font-weight:600;
  letter-spacing:-0.008em;display:flex;justify-content:space-between;gap:24px;align-items:baseline;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";color:var(--muted);font-weight:400;font-size:20px;line-height:1;}
.faq details[open] summary::after{content:"–";}
.faq details p{padding:0 0 24px;max-width:70ch;color:var(--ink-2);font-size:15.5px;line-height:1.7;}

/* ---------- notes / callouts ---------- */
.note{border-left:2px solid var(--rule-strong);padding:4px 0 4px 22px;color:var(--ink-2);font-size:15px;line-height:1.7;}
.panel-box{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:28px 30px;}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field--full{grid-column:1/-1;}
label{font-size:12.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);}
input,select,textarea{
  font-family:var(--sans);font-size:15.5px;color:var(--ink);background:#fff;
  border:1px solid var(--rule-strong);border-radius:12px;padding:13px 14px;width:100%;
  transition:border-color .16s,box-shadow .16s;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(27,116,155,.14);
}
textarea{resize:vertical;min-height:104px;}
select{appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1.5L6 6.5L11 1.5' stroke='%235B6472' stroke-width='1.5' fill='none' stroke-linecap='round'/></svg>");
  background-repeat:no-repeat;background-position:right 13px center;padding-right:34px;}
button.btn{cursor:pointer;font-family:var(--sans);}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--rule);padding:56px 0 44px;}
.site-footer__inner{display:flex;justify-content:space-between;gap:32px 48px;flex-wrap:wrap;align-items:flex-start;}
/* The tagline sets its own line; it should run flat until the footer actually
   runs out of room, not wrap early against an arbitrary character cap. */
.site-footer__brand{flex:1 1 auto;min-width:0;}
.site-footer__about{margin-top:8px;}
@media (max-width:1080px){.site-footer__about{max-width:46ch;}}
.site-footer nav{display:flex;gap:26px;flex-wrap:wrap;}
.site-footer a{font-size:14px;color:var(--ink-2);text-decoration:none;}
.site-footer a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.site-footer .small{font-size:13px;}

/* ---------- legal pages ---------- */
.legal{font-size:16px;line-height:1.72;color:var(--ink-2);max-width:74ch;}
.legal h2{font-size:21px;font-weight:650;letter-spacing:-0.018em;
  color:var(--ink);margin:46px 0 14px;}
.legal p{margin:0 0 16px;}
.legal ul{margin:0 0 20px;padding-left:20px;}
.legal li{margin-bottom:9px;}
.legal a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;}
.legal strong{color:var(--ink);font-weight:600;}
.legal > p:first-child{font-size:17px;}

/* ---------- reveal ---------- */
html.js .reveal{opacity:0;transform:translateY(14px);}
html.js .reveal.is-in{opacity:1;transform:none;transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1);}
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;}
}

.legal-callout{
  background:var(--surface);border:1px solid var(--rule);border-left:3px solid var(--accent);
  border-radius:14px;padding:26px 28px 10px;margin-bottom:44px;
}
.legal-callout p:last-child{margin-bottom:16px;}

.step .device{max-width:215px;margin-inline:auto;}
@media (max-width:820px){ .step .device{max-width:250px;} }

/* Screenshot frames sit centred in whatever column holds them. */
.device{margin-inline:auto;}
.gallery figure{text-align:center;}
.gallery figcaption{text-align:center;}

/* ---------- quad (2x2 prose grid) ---------- */
.quad{
  display:grid;grid-template-columns:1fr 1fr;gap:0 64px;margin-top:56px;
  border-top:1px solid var(--rule);
}
.quad__item{padding:30px 0;border-bottom:1px solid var(--rule);}
.quad__item h3{margin-bottom:9px;}
.quad__item p{font-size:15.5px;line-height:1.65;color:var(--ink-2);max-width:44ch;}
@media (max-width:760px){
  .quad{grid-template-columns:1fr;gap:0;}
}