/* ============================================================================
   TECH RETAINER — site design system (static, file-per-page).
   Premium "operations" identity: navy + cyan, dark ink feature bands,
   monospace labels, precise grid. One stylesheet for every page.
   ========================================================================== */
:root{
  --ink:#080d1a; --ink-2:#0e1730; --ink-3:#152241;
  --on-ink:#e9eef7; --on-ink-dim:#94a3c2; --on-ink-line:#22304f;
  --navy:hsl(221 72% 40%); --cyan:hsl(196 92% 54%); --cyan-deep:hsl(199 90% 44%);
  --live:#34d399;
  --bg:#f3f6fb; --surface:#ffffff; --surface-2:#eef3f9;
  --text:#0c1424; --muted:#54607a; --border:#e3e9f2; --accent:var(--cyan-deep);
  --shadow:0 24px 60px -30px rgb(9 17 34 / .35); --shadow-sm:0 10px 30px -18px rgb(9 17 34 / .3);
  --r:16px; --maxw:1160px;
  --sans:"Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Code","JetBrains Mono",Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.mono{font-family:var(--mono)}
h1,h2,h3{letter-spacing:-.028em;line-height:1.05;text-wrap:balance;font-weight:800}
.eyebrow{font-family:var(--mono);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);font-weight:600}
section{padding:82px 0}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:.95rem;padding:13px 22px;border-radius:11px;cursor:pointer;border:1px solid transparent;transition:transform .16s,background .16s,border-color .16s,color .16s;white-space:nowrap}
.btn-primary{background:var(--cyan);color:#04121d}
.btn-primary:hover{background:hsl(196 92% 61%);transform:translateY(-2px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{filter:brightness(1.09);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--on-ink-line);color:var(--on-ink)}
.btn-ghost:hover{border-color:var(--cyan);color:#fff}
.btn-outline{background:transparent;border-color:var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--navy);background:var(--surface)}
.arrow{transition:transform .16s}
.btn:hover .arrow{transform:translateX(3px)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.brand img{height:34px;width:auto}
.brand b{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--muted);font-weight:600;font-size:.93rem;transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:9px;padding:8px 11px;color:var(--text);cursor:pointer;font-size:16px}

/* ---------- Hero (dark ops band) ---------- */
.hero{background:radial-gradient(120% 130% at 82% -20%,#12224a 0%,var(--ink) 48%);color:var(--on-ink);padding:80px 0 92px;position:relative;overflow:hidden}
.hero.tall{padding:96px 0 104px}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--on-ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--on-ink-line) 1px,transparent 1px);background-size:60px 60px;opacity:.16;mask-image:radial-gradient(80% 75% at 55% 0%,#000,transparent 78%)}
.hero .container{position:relative}
.hero .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cyan)}
.hero .eyebrow.live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--live);box-shadow:0 0 0 0 hsl(152 61% 52% / .7);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 hsl(152 61% 52% / .55)}70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
.hero h1{font-size:clamp(2.2rem,4.8vw,3.6rem);margin:18px 0 16px;max-width:18ch}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero p{font-size:clamp(1.04rem,1.8vw,1.24rem);max-width:58ch;margin:0 0 28px;color:var(--on-ink-dim)}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero .assure{margin-top:22px;font-size:.85rem;color:var(--on-ink-dim);display:flex;gap:18px;flex-wrap:wrap}
.hero .assure span{display:flex;align-items:center;gap:7px}.hero .assure b{color:var(--cyan)}
.hero-split{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.breadcrumb{font-family:var(--mono);font-size:.78rem;letter-spacing:.04em;color:var(--on-ink-dim);margin-bottom:16px}
.breadcrumb a{color:var(--cyan)}.breadcrumb a:hover{text-decoration:underline}

/* partner console (home hero) */
.console{background:linear-gradient(180deg,var(--ink-2),var(--ink));border:1px solid var(--on-ink-line);border-radius:16px;box-shadow:0 40px 90px -40px #000;overflow:hidden}
.console .bar{display:flex;align-items:center;gap:7px;padding:12px 15px;border-bottom:1px solid var(--on-ink-line);background:rgb(255 255 255 / .02)}
.console .bar i{width:11px;height:11px;border-radius:50%;background:#2b3a5c}
.console .bar .t{margin-left:8px;font-family:var(--mono);font-size:.72rem;color:var(--on-ink-dim);letter-spacing:.04em}
.console .body{padding:20px}
.console .row{display:flex;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px dashed var(--on-ink-line);font-size:.9rem}
.console .row:last-child{border-bottom:0}
.console .k{font-family:var(--mono);color:var(--on-ink-dim);font-size:.78rem;letter-spacing:.04em}
.console .v{font-weight:700;color:var(--on-ink)}
.chip{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;padding:4px 9px;border-radius:999px;display:inline-flex;align-items:center;gap:6px}
.chip.on{background:hsl(152 61% 52% / .14);color:var(--live)}.chip.on::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--live)}
.bars{display:flex;gap:3px;align-items:flex-end;height:22px}
.bars span{width:5px;background:var(--cyan);border-radius:2px;opacity:.85;animation:eq 1.2s ease-in-out infinite}
.bars span:nth-child(2){animation-delay:.15s}.bars span:nth-child(3){animation-delay:.3s}.bars span:nth-child(4){animation-delay:.45s}.bars span:nth-child(5){animation-delay:.6s}
@keyframes eq{0%,100%{height:6px}50%{height:22px}}

/* ---------- Section head ---------- */
.head{max-width:62ch}
.head.center{margin:0 auto;text-align:center}
.head h2{font-size:clamp(1.8rem,3.4vw,2.6rem);margin:12px 0 12px}
.head p{color:var(--muted);font-size:1.08rem}
.muted-band{background:var(--surface-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:28px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card::after{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:linear-gradient(90deg,var(--navy),var(--cyan));transform:scaleX(0);transform-origin:left;transition:transform .25s}
.card:hover::after{transform:scaleX(1)}
.card .ic{width:54px;height:54px;border-radius:13px;display:grid;place-items:center;font-size:26px;margin-bottom:16px;background:var(--surface-2);border:1px solid var(--border)}
.card .tag{font-family:var(--mono);font-size:.72rem;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.12em;margin-bottom:10px}
.card h3{font-size:1.26rem;margin:0 0 8px}
.card p{color:var(--muted);font-size:.98rem;flex:1;margin:0 0 18px}
.card .learn{margin-top:auto;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:7px;font-size:.95rem}

/* checklist / split */
.checklist{list-style:none;display:grid;gap:14px}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:var(--muted)}
.checklist li::before{content:"✓";color:#04121d;background:var(--cyan);width:22px;height:22px;border-radius:6px;display:grid;place-items:center;font-size:.8rem;font-weight:800;flex:none;margin-top:3px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-top:0}
.split p{color:var(--muted);font-size:1.04rem}
.split.on-ink h2{color:var(--on-ink)} .split.on-ink p{color:var(--on-ink-dim)}

/* feature rows */
.feature{display:flex;gap:16px;padding:22px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
.feature .fi{width:46px;height:46px;flex:none;border-radius:11px;background:var(--surface-2);display:grid;place-items:center;font-size:22px;border:1px solid var(--border)}
.feature h4{font-size:1.08rem;margin-bottom:5px}
.feature p{color:var(--muted);font-size:.95rem}

/* process (dark, numbered) */
.model{background:var(--ink);color:var(--on-ink)}
.model .head h2{color:var(--on-ink)} .model .head p{color:var(--on-ink-dim)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:48px}
.step{border-top:2px solid var(--on-ink-line);padding-top:18px}
.step .n{font-family:var(--mono);font-size:.8rem;color:var(--cyan);letter-spacing:.1em}
.step h4{font-size:1.12rem;margin:12px 0 8px}
.step p{color:var(--on-ink-dim);font-size:.95rem}

/* metrics */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.metric{text-align:center;padding:26px 14px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
.metric .num{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;background:linear-gradient(120deg,var(--navy),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.metric .lab{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:6px}

/* faq */
.faq{display:grid;gap:12px;max-width:840px;margin:44px auto 0}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:0 22px;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:20px 0;font-weight:700;font-size:1.05rem;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:1.4rem;font-weight:400;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);padding:0 0 20px;font-size:.98rem}

/* founder / quote */
.quote{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:44px;display:grid;grid-template-columns:auto 1fr;gap:30px;align-items:center;box-shadow:var(--shadow-sm)}
.quote .av{width:88px;height:88px;border-radius:50%;object-fit:cover;background:linear-gradient(135deg,var(--navy),var(--cyan));display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.6rem;font-family:var(--mono)}
.quote blockquote{font-size:1.26rem;line-height:1.4;font-weight:600}
.quote .who{margin-top:12px;color:var(--muted);font-size:.92rem;font-family:var(--mono)}

/* ---------- Contact form ---------- */
.form-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.form{display:grid;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:30px;box-shadow:var(--shadow-sm)}
.field{display:grid;gap:7px}
.field label{font-size:.85rem;font-weight:700;color:var(--text)}
.field input,.field textarea,.field select{font-family:inherit;font-size:.98rem;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);width:100%;transition:border-color .15s,box-shadow .15s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px hsl(196 92% 54% / .18)}
.field textarea{min-height:130px;resize:vertical}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:.85rem;color:var(--muted)}
.form-status{font-size:.92rem;padding:12px 14px;border-radius:10px;display:none}
.form-status.ok{display:block;background:hsl(152 61% 52% / .12);color:#15803d;border:1px solid hsl(152 61% 52% / .3)}
.form-status.err{display:block;background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}
.contact-aside{display:grid;gap:18px}
.contact-aside .item{display:flex;gap:14px;align-items:flex-start;padding:20px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
.contact-aside .ci{width:42px;height:42px;flex:none;border-radius:11px;background:var(--surface-2);display:grid;place-items:center;font-size:20px}
.contact-aside h4{font-size:1rem;margin-bottom:3px}
.contact-aside p,.contact-aside a{color:var(--muted);font-size:.94rem}
.contact-aside a:hover{color:var(--accent)}

/* ---------- CTA band ---------- */
.cta-band{background:radial-gradient(110% 130% at 15% 0%,#153061,var(--ink) 62%);color:var(--on-ink);text-align:center;border-radius:26px;padding:64px 30px;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--on-ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--on-ink-line) 1px,transparent 1px);background-size:52px 52px;opacity:.14;mask-image:radial-gradient(70% 80% at 50% 0%,#000,transparent)}
.cta-band>*{position:relative}
.cta-band h2{font-size:clamp(1.8rem,3.4vw,2.8rem);margin-bottom:14px}
.cta-band p{color:var(--on-ink-dim);max-width:52ch;margin:0 auto 30px;font-size:1.1rem}
.cta-band .btn-primary{background:#fff;color:var(--navy)}.cta-band .btn-primary:hover{background:#eaf6ff}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--on-ink-dim);padding:56px 0 34px}
.fcols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.site-footer a:hover{color:var(--cyan)}
.site-footer h5{color:var(--on-ink);font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.site-footer ul{list-style:none;display:grid;gap:10px;font-size:.93rem}
.fbrand p{color:var(--on-ink-dim);font-size:.93rem;margin-top:12px;max-width:34ch}
.fbrand .brand{color:var(--on-ink)} .fbrand .brand b{color:var(--cyan)}
.copy{border-top:1px solid var(--on-ink-line);margin-top:38px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.85rem;font-family:var(--mono)}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:920px){
  .hero-split{grid-template-columns:1fr;gap:40px}
  .grid-3,.grid-4,.steps,.metrics,.feature-grid{grid-template-columns:1fr 1fr}
  .split,.form-grid{grid-template-columns:1fr;gap:30px}
  .fcols{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  section{padding:56px 0}
  .hero{padding:60px 0 66px}
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--border);padding:18px 26px;gap:16px}
  .nav-toggle{display:inline-flex}
  .grid-3,.grid-2,.grid-4,.steps,.metrics{grid-template-columns:1fr}
  .quote{grid-template-columns:1fr;text-align:center;justify-items:center;padding:30px}
  .two{grid-template-columns:1fr}
  .cta-band{border-radius:0;margin:0 -26px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}}

/* ---------- Bento grid (2026 trend) ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(150px,auto);gap:18px;margin-top:44px}
.bento .b{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:26px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.bento .b:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.bento .b .k{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.bento .b .big{font-size:clamp(2rem,4vw,3rem);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;background:linear-gradient(120deg,var(--navy),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.bento .b p{color:var(--muted);font-size:.96rem;margin:0}
.bento .b h3{font-size:1.3rem;letter-spacing:-.02em;margin:0 0 8px}
.bento .lead{grid-column:span 2;grid-row:span 2;background:linear-gradient(160deg,var(--ink-2),var(--ink));color:var(--on-ink);border-color:var(--on-ink-line)}
.bento .lead .k{color:var(--cyan)} .bento .lead p{color:var(--on-ink-dim)}
.bento .lead h3{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem)}
.bento .lead::after{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--on-ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--on-ink-line) 1px,transparent 1px);background-size:40px 40px;opacity:.2;mask-image:radial-gradient(80% 80% at 90% 0%,#000,transparent 70%);pointer-events:none}
.bento .lead>*{position:relative}
.bento .wide{grid-column:span 2}
.bento .accent{background:linear-gradient(135deg,var(--navy),var(--cyan));color:#fff;border:0}
.bento .accent .k{color:rgba(255,255,255,.8)} .bento .accent .big{background:none;-webkit-background-clip:initial;background-clip:initial;color:#fff}
.bento .quote-cell blockquote{font-size:1.05rem;font-weight:600;line-height:1.4;margin:0}
.bento .quote-cell .who{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-top:10px}
@media (max-width:920px){.bento{grid-template-columns:repeat(2,1fr)}.bento .lead{grid-column:span 2;grid-row:span 1}.bento .wide{grid-column:span 2}}
@media (max-width:640px){.bento{grid-template-columns:1fr}.bento .lead,.bento .wide{grid-column:span 1}}