/* Орбита — студия мобильной разработки. Design system: xAI "warm cream laboratory".
   Tokens per style reference DESIGN(19). Light theme only, monochrome + rationed accent. */

/* ---- fonts: GeistMono role -> self-hosted JetBrains Mono; sans/display -> system-ui substitute ---- */
@font-face{
  font-family:'JBMono';
  src:url('/assets/fonts/jbmono-latin.woff2') format('woff2');
  font-weight:400 700;font-display:swap;font-style:normal;
}

:root{
  /* colors */
  --jet:#0a0a0a; --charcoal:#151515; --fog:#858585; --pewter:#9d9d9d; --steel:#545454;
  --dove:#d5d9e2; --cream:#f9f8f6; --paper:#ffffff; --sand:#f2ede5; --slate:#3b3b3b;
  --ember:#ff5f57; --sunbeam:#ffbd2e; --sprout:#28c840;
  /* type */
  --sans:'Universal Sans',ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --display:'Universal Sans Display',ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:'JBMono',ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
  /* layout */
  --maxw:1200px; --gap:80px; --radius-card:16px; --radius-sm:8px; --radius-input:6px;
  --ring:0 0 0 1px var(--dove);
}

*{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(--jet);
  font-family:var(--sans);font-size:16px;line-height:1.5;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--jet);outline-offset:2px;border-radius:4px}

/* ---- containers ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:var(--gap) 0}
@media(max-width:640px){.section{padding:56px 0}}

/* ---- type scale ---- */
.display{font-family:var(--display);font-weight:400;letter-spacing:-0.025em;line-height:1.02}
.h-display{font-size:clamp(40px,7vw,72px)}
.h-lg{font-size:clamp(34px,5.4vw,60px)}
.h-1{font-size:clamp(30px,4.4vw,48px)}
.h-2{font-size:clamp(24px,3vw,30px);line-height:1.15}
.h-3{font-size:24px;line-height:1.33;letter-spacing:-0.02em}
.lead{font-size:clamp(16px,2.1vw,18px);line-height:1.55;color:var(--steel);max-width:60ch}
.small{font-size:14px;line-height:1.45}
.mono{font-family:var(--mono);letter-spacing:-0.01em}
.fog{color:var(--fog)} .pewter{color:var(--pewter)} .steel{color:var(--steel)}

.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:0.02em;color:var(--fog);
  text-transform:uppercase;display:inline-flex;align-items:center;gap:8px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--jet)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-weight:500;
  font-size:14px;line-height:20px;border-radius:9999px;padding:12px 20px;cursor:pointer;
  border:1px solid transparent;transition:transform .18s cubic-bezier(.16,1,.3,1),background .2s,box-shadow .2s,color .2s;
  white-space:nowrap;text-align:center}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--jet);color:var(--paper)}
.btn-primary:hover{background:#000}
.btn-ghost{background:transparent;color:var(--jet)}
.btn-ghost:hover{box-shadow:var(--ring)}
.btn-nav{background:var(--paper);color:var(--jet);border:1px solid var(--dove);padding:7px 14px}
.btn-nav:hover{box-shadow:0 0 0 1px rgba(10,10,10,.15)}
.btn-lg{padding:14px 24px;font-size:15px}
.btn-arrow svg{width:16px;height:16px;transition:transform .2s}
.btn-arrow:hover svg{transform:translateX(3px)}

/* ---- header ---- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.72);
  backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s,background .2s}
.site-header.scrolled{border-bottom-color:var(--dove);box-shadow:0 1px 0 rgba(10,10,10,.02)}
.nav{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-size:19px;
  letter-spacing:-0.02em;font-weight:500}
.brand .mark{width:26px;height:26px;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:14px}
.nav-links a{font-size:14px;font-weight:500;color:var(--fog);transition:color .18s}
.nav-links a:hover{color:var(--jet)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.burger{display:none;width:40px;height:40px;border:1px solid var(--dove);border-radius:9999px;
  background:var(--paper);cursor:pointer;align-items:center;justify-content:center}
.burger svg{width:18px;height:18px}
@media(max-width:900px){
  .nav-links{display:none}
  .nav-right .btn-nav{display:none}
  .burger{display:inline-flex}
}
/* mobile drawer */
.drawer{position:fixed;inset:0 0 0 auto;width:min(84vw,340px);background:var(--paper);z-index:80;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.16,1,.3,1);
  padding:24px;display:flex;flex-direction:column;gap:6px;box-shadow:-20px 0 60px rgba(0,0,0,.12)}
.drawer.open{transform:none}
.drawer a{padding:12px 8px;font-size:17px;font-weight:500;border-bottom:1px solid var(--cream)}
.drawer .btn{margin-top:12px;justify-content:center}
.scrim{position:fixed;inset:0;background:rgba(10,10,10,.28);z-index:75;opacity:0;visibility:hidden;
  transition:opacity .3s}
.scrim.open{opacity:1;visibility:visible}
.drawer-close{align-self:flex-end;border:1px solid var(--dove);background:none;border-radius:9999px;
  width:38px;height:38px;cursor:pointer;margin-bottom:8px}

/* ---- hero ---- */
.hero{position:relative;padding-top:72px;padding-bottom:56px;overflow:hidden}
.hero-inner{position:relative;z-index:2}
.hero h1{margin-bottom:20px;max-width:16ch}
.hero .lead{margin-bottom:28px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-note{font-family:var(--mono);font-size:12px;color:var(--pewter);margin-top:22px}
/* glow orbs */
.orb{position:absolute;border-radius:50%;filter:blur(64px);opacity:.6;pointer-events:none;z-index:1}
.orb-a{width:520px;height:520px;top:-160px;right:-120px;
  background:radial-gradient(circle at 30% 30%,#ffa888,transparent 62%)}
.orb-b{width:420px;height:420px;bottom:-180px;left:-140px;
  background:radial-gradient(circle at 60% 40%,#ff8868,transparent 60%);opacity:.42}

/* ---- product cards row ---- */
.cards-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:820px){.cards-2{grid-template-columns:1fr}}
.pcard{background:var(--cream);border-radius:var(--radius-card);overflow:hidden;
  display:flex;flex-direction:column}
.pcard-body{padding:28px 28px 0}
.pcard-body .k{font-family:var(--mono);font-size:12px;color:var(--fog);text-transform:uppercase}
.pcard-body h3{margin:10px 0 8px}
.pcard-body p{color:var(--steel);font-size:15px;max-width:42ch}
.pcard-media{margin-top:22px;padding:0 22px 22px}

/* ---- terminal / phone mock (the xAI signature: real in-context UI, not fake screenshot slop) ---- */
.term{background:var(--charcoal);border-radius:12px;overflow:hidden;position:relative}
.term-bar{display:flex;align-items:center;gap:7px;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.06)}
.dot{width:11px;height:11px;border-radius:50%}
.dot.r{background:var(--ember)} .dot.y{background:var(--sunbeam)} .dot.g{background:var(--sprout)}
.term-tab{margin-left:auto;font-family:var(--mono);font-size:11px;color:#8a8f98}
.term-code{font-family:var(--mono);font-size:13px;line-height:1.85;padding:16px 18px;color:#c9d1d9;
  white-space:pre;overflow-x:auto}
.tk{color:#79c0ff} .ts{color:#a5d6a7} .tc{color:#6e7681} .tn{color:#ffa657} .tf{color:#d2a8ff}

/* stat block */
.stats{display:flex;gap:40px;flex-wrap:wrap;margin-top:26px}
.stat .n{font-family:var(--display);font-size:34px;letter-spacing:-0.02em;line-height:1}
.stat .l{font-size:12px;color:var(--pewter);margin-top:6px;font-family:var(--mono);text-transform:uppercase}

/* ---- feature split (text + illustration) ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.rev .split-media{order:-1}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:32px}.split.rev .split-media{order:0}}
.split-text h2{margin-bottom:14px}
.split-text .lead{margin-bottom:22px}
.checklist{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}
.checklist li{display:flex;gap:10px;font-size:15px;color:var(--jet);align-items:flex-start}
.checklist svg{width:18px;height:18px;flex:0 0 auto;margin-top:1px;color:var(--jet)}

/* phone frame */
.phone{width:264px;max-width:80%;margin:0 auto;border-radius:36px;background:#0a0a0a;padding:10px;
  box-shadow:0 0 0 1px rgba(0,0,0,.06),0 30px 60px -30px rgba(15,23,42,.35)}
.phone-screen{border-radius:28px;background:var(--paper);overflow:hidden;aspect-ratio:9/19.5}
.split-media{position:relative}
.split-media .orb{opacity:.5}

/* ---- services grid (asymmetric bento) ---- */
.bento{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-auto-rows:1fr;gap:20px}
.bento .cell{background:var(--cream);border-radius:var(--radius-card);padding:28px;
  display:flex;flex-direction:column;justify-content:space-between;min-height:210px}
.bento .cell.wide{grid-column:span 2}
.bento .cell.dark{background:var(--charcoal);color:var(--paper)}
.bento .cell.sand{background:var(--sand)}
.bento .icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--paper);box-shadow:var(--ring);margin-bottom:auto}
.bento .cell.dark .icon{background:rgba(255,255,255,.06);box-shadow:0 0 0 1px rgba(255,255,255,.08)}
.bento .icon svg{width:20px;height:20px}
.bento h3{margin:18px 0 6px;font-size:19px;letter-spacing:-0.01em}
.bento p{font-size:14px;color:var(--steel)}
.bento .cell.dark p{color:#b9bfc9}
@media(max-width:860px){.bento{grid-template-columns:1fr 1fr}.bento .cell.wide{grid-column:span 2}}
@media(max-width:560px){.bento{grid-template-columns:1fr}.bento .cell.wide{grid-column:span 1}}

/* ---- process steps ---- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{padding-top:20px;border-top:1px solid var(--dove)}
.step .num{font-family:var(--mono);font-size:12px;color:var(--pewter)}
.step h3{margin:14px 0 8px;font-size:18px}
.step p{font-size:14px;color:var(--steel)}

/* ---- pricing tiers ---- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:860px){.tiers{grid-template-columns:1fr}}
.tier{background:var(--cream);border-radius:var(--radius-card);padding:32px;display:flex;flex-direction:column}
.tier.feature{box-shadow:0 0 0 1px rgba(0,0,0,.06),0 18px 40px -24px rgba(15,23,42,.18);background:var(--paper)}
.tier .name{font-family:var(--display);font-size:22px;font-weight:500;letter-spacing:-0.01em}
.tier .price{font-family:var(--display);font-size:38px;letter-spacing:-0.02em;margin:14px 0 4px}
.tier .price small{font-family:var(--sans);font-size:14px;color:var(--fog);font-weight:400}
.tier .desc{font-size:14px;color:var(--steel);margin-bottom:20px;min-height:40px}
.tier .checklist{margin-bottom:24px}
.tier .btn{margin-top:auto;justify-content:center}
.badge-beta{background:var(--sand);color:var(--jet);border-radius:9999px;padding:3px 10px;
  font-size:12px;font-weight:500;font-family:var(--sans);display:inline-block;margin-bottom:12px}

/* ---- blog / news index ---- */
.news{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media(max-width:860px){.news{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.news{grid-template-columns:1fr}}
.ncard .thumb{border-radius:12px;aspect-ratio:16/11;overflow:hidden;background:var(--cream)}
.ncard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.16,1,.3,1)}
.ncard:hover .thumb img{transform:scale(1.04)}
.ncard .date{font-size:11px;color:var(--fog);margin:12px 0 4px;font-family:var(--mono)}
.ncard h3{font-size:16px;font-weight:500;line-height:1.3}

/* ---- cta band ---- */
.cta-band{background:var(--charcoal);border-radius:24px;padding:56px 48px;color:var(--paper);
  position:relative;overflow:hidden}
.cta-band .orb{opacity:.4}
.cta-band h2{position:relative;z-index:2;max-width:18ch;margin-bottom:16px}
.cta-band p{position:relative;z-index:2;color:#c9cfd8;max-width:52ch;margin-bottom:26px}
.cta-band .btn-primary{background:var(--paper);color:var(--jet);position:relative;z-index:2}
.cta-band .btn-primary:hover{background:#f0efec}
@media(max-width:560px){.cta-band{padding:40px 24px}}

/* ---- contact form ---- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:500;color:var(--slate)}
.field input,.field textarea{font-family:var(--sans);font-size:15px;padding:11px 14px;
  border:1px solid var(--dove);border-radius:var(--radius-input);background:var(--paper);color:var(--jet)}
.field input::placeholder,.field textarea::placeholder{color:var(--pewter)}
.field input:focus,.field textarea:focus{outline:none;box-shadow:0 0 0 3px rgba(213,217,226,.6);border-color:var(--fog)}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:12px;color:var(--pewter);margin-top:12px}

/* ---- footer ---- */
.site-footer{border-top:1px solid var(--dove);padding:56px 0 40px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.foot-grid{grid-template-columns:1fr}}
.foot-col h4{font-size:12px;text-transform:uppercase;letter-spacing:0.04em;color:var(--pewter);
  font-family:var(--mono);margin-bottom:14px;font-weight:400}
.foot-col a{display:block;font-size:14px;color:var(--fog);padding:5px 0;transition:color .15s}
.foot-col a:hover{color:var(--jet)}
.foot-brand p{font-size:14px;color:var(--steel);max-width:34ch;margin-top:14px}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--cream);font-size:12px;color:var(--pewter)}

/* ---- section head ---- */
.sec-head{max-width:60ch;margin-bottom:40px}
.sec-head h2{margin:14px 0 12px}

/* ---- scroll reveal ---- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---- 3d tilt ---- */
.tilt{transition:transform .3s cubic-bezier(.16,1,.3,1);transform-style:preserve-3d;will-change:transform}
@media(prefers-reduced-motion:reduce){.tilt{transform:none!important}}

/* logo strip */
.logostrip{display:flex;gap:40px;align-items:center;flex-wrap:wrap;opacity:.7}
.logostrip .lg{font-family:var(--mono);font-size:14px;color:var(--fog);letter-spacing:-0.01em}

/* ============================================================
   BLOG / ARTICLE — reading design (added M2)
   ============================================================ */
/* featured card on blog index */
.feat-card{display:grid;grid-template-columns:1.15fr 1fr;gap:0;background:var(--cream);
  border-radius:20px;overflow:hidden;align-items:stretch;transition:box-shadow .3s,transform .3s}
.feat-card:hover{box-shadow:0 0 0 1px rgba(0,0,0,.05),0 30px 60px -34px rgba(15,23,42,.28)}
.feat-media{overflow:hidden}
.feat-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.16,1,.3,1)}
.feat-card:hover .feat-media img{transform:scale(1.03)}
.feat-body{padding:40px 40px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.feat-body h2{letter-spacing:-0.02em}
.feat-meta{font-size:12px;color:var(--fog);margin-top:4px}
@media(max-width:820px){.feat-card{grid-template-columns:1fr}.feat-body{padding:28px 24px}}

/* category tag */
.cat-tag{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.04em;
  text-transform:uppercase;color:var(--jet);background:var(--sand);border-radius:9999px;
  padding:5px 12px;width:fit-content}

/* news card lead text (blog index grid) */
.news-lead{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.news-lead{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.news-lead{grid-template-columns:1fr}}
.ncard-lead{font-size:13px;color:var(--steel);margin-top:6px;line-height:1.45}

/* ---- article layout ---- */
.article{padding-top:40px}
.art-wrap{max-width:760px;margin:0 auto;padding:0 24px}
.art-head{padding-bottom:8px}
.back-link{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:12px;
  color:var(--fog);margin-bottom:18px;transition:color .15s}
.back-link:hover{color:var(--jet)}
.back-link svg{width:15px;height:15px}
.art-head .cat-tag{margin-bottom:18px}
.art-head h1{margin:14px 0 18px;letter-spacing:-0.025em}
.art-lead{max-width:58ch;color:var(--steel)}
.art-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:22px;
  font-size:12px;color:var(--pewter)}
.art-meta .sep{color:var(--dove)}
.art-cover{max-width:1080px;margin:36px auto 0;padding:0 24px}
.art-cover img{width:100%;border-radius:20px;border:1px solid var(--dove)}
@media(max-width:560px){.art-cover img{border-radius:14px}}

/* ---- prose ---- */
.prose{margin-top:44px;font-size:17px;line-height:1.72;color:#26262a}
.prose>*+*{margin-top:22px}
.prose h2{font-family:var(--display);font-weight:400;font-size:clamp(24px,3.4vw,32px);
  letter-spacing:-0.02em;line-height:1.15;margin-top:52px;color:var(--jet);scroll-margin-top:88px}
.prose h3{font-family:var(--display);font-weight:400;font-size:22px;letter-spacing:-0.015em;
  margin-top:40px;color:var(--jet);scroll-margin-top:88px}
.prose p{color:#26262a}
.prose strong{font-weight:600;color:var(--jet)}
.prose em{font-style:italic}
.prose a{color:var(--jet);text-decoration:underline;text-decoration-color:var(--dove);
  text-underline-offset:3px;transition:text-decoration-color .2s}
.prose a:hover{text-decoration-color:var(--jet)}
.prose ul{margin-top:20px;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:14px}
.prose ul li{position:relative;padding-left:30px;color:#26262a}
.prose ul li::before{content:"";position:absolute;left:6px;top:11px;width:7px;height:7px;
  border-radius:2px;background:var(--jet);transform:rotate(45deg)}
.prose ul li strong{color:var(--jet)}

/* pull quote */
.prose blockquote{margin:40px 0;padding:6px 0 6px 28px;border-left:3px solid var(--ember);
  font-family:var(--display);font-weight:400;font-size:clamp(21px,3vw,26px);line-height:1.32;
  letter-spacing:-0.015em;color:var(--jet)}

/* callout box */
.callout{margin:32px 0;background:var(--cream);border:1px solid var(--dove);border-radius:16px;
  padding:24px 26px;position:relative}
.callout .callout-k{font-family:var(--mono);font-size:11px;text-transform:uppercase;
  letter-spacing:.05em;color:var(--ember);margin-bottom:8px}
.callout p{font-size:15.5px;color:var(--steel);margin:0}
.callout p+p{margin-top:10px}

/* sign-off */
.art-signoff{margin-top:52px;padding-top:28px;border-top:1px solid var(--dove);
  display:flex;gap:16px;align-items:flex-start;font-size:14px;color:var(--steel);line-height:1.6}
.signoff-mark{flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--cream);
  box-shadow:var(--ring);display:flex;align-items:center;justify-content:center}
.signoff-mark svg{width:24px;height:24px}
.art-signoff strong{color:var(--jet)}
.signoff-link{display:inline-block;margin-top:8px;font-weight:500;color:var(--jet);
  text-decoration:underline;text-decoration-color:var(--dove);text-underline-offset:3px}
.signoff-link:hover{text-decoration-color:var(--jet)}
.art-related-sec{padding-top:24px}