/* PiHub Systems website, v3 design: clean base with hand-drawn accents. */
:root{
  --bg:#FBF8EF;--surface:#fff;--ink:#22304A;--ink-2:#3B4A66;--muted:#55627C;--hair:#E4DFD0;
  --accent:#D6402B;--acc:var(--accent);--tint:#C9DCF7;
  --line:#E3E9F2;--margin:#F3B9B2;
  --n1:#FFE680;--n2:#BFE8D2;--n3:#F9C8D0;--n4:#C9DCF7;--n5:#FFD9B3;
  --f-hand:'Caveat Brush',cursive;--f-head:'Bricolage Grotesque',system-ui,sans-serif;--f-body:'DM Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --radius:18px;--gutter:clamp(16px,4vw,40px)
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}
a:hover{color:var(--acc)}
:focus-visible{outline:3px solid #7FA6E0;outline-offset:2px;border-radius:6px}
p{margin:0}
h1,h2,h3{margin:0}
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;text-decoration:none}
.skip:focus{top:12px;color:#fff}

/* Paper: ruled lines down the whole page, margin lines on both sides */
.page{position:relative;overflow-x:clip;min-height:100vh;background-color:var(--bg);
  background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 35px,var(--line) 35px,var(--line) 36px)}
.margin,.margin-r{position:absolute;top:0;bottom:0;width:1px;background:var(--margin);z-index:3;pointer-events:none}
.margin{left:56px}.margin-r{right:24px}
.wrap{position:relative;z-index:1;max-width:1360px;margin:0 auto;padding-left:88px;padding-right:40px}

/* Type */
.hand{font-family:var(--f-hand);font-weight:400}
.kicker{font-family:var(--f-hand);font-size:26px;line-height:1.1;color:var(--acc);margin-bottom:6px}
.tilt-l{display:inline-block;transform:rotate(-2deg)}
.h1{font-family:var(--f-head);font-weight:800;font-size:clamp(38px,6vw,64px);line-height:1.04;letter-spacing:-.02em;text-wrap:balance}
.h2{font-family:var(--f-head);font-weight:800;font-size:clamp(28px,3.6vw,40px);line-height:1.1;letter-spacing:-.015em;text-wrap:balance}
.h3{font-family:var(--f-head);font-weight:700;font-size:21px;line-height:1.2}
.lead{font-size:clamp(17px,1.6vw,20px);line-height:1.55;color:var(--ink-2);max-width:580px}
.mono{font-family:'DM Mono',monospace;font-size:12px;letter-spacing:.1em}
.muted{color:var(--muted)}.small{font-size:15px}.acc{color:var(--acc)}
.u{position:relative;display:inline-block;white-space:nowrap}
.squiggle{position:absolute;left:0;bottom:-8px;width:100%;height:14px;fill:none;stroke:var(--acc);stroke-width:4;stroke-linecap:round}

/* Header */
.site-header{position:sticky;top:0;z-index:20;transition:background-color .2s,box-shadow .2s,backdrop-filter .2s}
.site-header.scrolled{background:rgba(251,248,239,.9);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--hair)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px;flex-wrap:wrap}
.logo{font-family:var(--f-hand);font-size:32px;line-height:1;text-decoration:none;color:var(--ink)}
.links{display:flex;align-items:center;gap:26px;font-weight:500}
.links a{text-decoration:none;padding:6px 0}
.links a[aria-current="page"]{text-decoration:underline wavy var(--acc);text-underline-offset:6px}
.links .btn{padding:10px 18px}
.menu-btn{display:none;font:inherit;font-weight:700;background:var(--surface);color:var(--ink);border:1.5px solid var(--ink);border-radius:12px;padding:8px 14px;min-height:44px;cursor:pointer}
.menu-btn span{display:inline-flex;align-items:center;gap:8px}
.menu-btn .when-open{display:none}
.menu-btn[aria-expanded="true"] .when-open{display:inline-flex}
.menu-btn[aria-expanded="true"] .when-closed{display:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;text-decoration:none;border-radius:12px;padding:12px 22px;min-height:44px;border:1.5px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background-color .15s,filter .15s}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-lg{padding:14px 26px;font-size:17px}
.btn-ink{background:var(--ink);color:#fff}.btn-ink:hover{color:#fff;background:#111A2C}
.btn-acc{background:var(--acc);color:#fff}.btn-acc:hover{color:#fff;filter:brightness(.9)}
.btn-line{background:var(--surface);color:var(--ink);border-color:var(--ink)}.btn-line:hover{color:var(--ink);box-shadow:3px 4px 0 var(--ink)}
.btn[disabled]{opacity:.65;cursor:progress;transform:none}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}

/* Hero */
.hero{position:relative}
.hero-in{display:flex;flex-wrap:wrap;gap:48px;align-items:center;padding-top:28px;padding-bottom:64px}
.hero-sm .wrap{padding-top:28px;padding-bottom:40px;display:flex;flex-direction:column;gap:14px}
.copy{flex:1 1 460px;min-width:0;display:flex;flex-direction:column;gap:18px}
.doors{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:14px;margin-top:6px;max-width:640px}
.door{display:flex;flex-direction:column;gap:4px;text-decoration:none;background:var(--surface);border:1.5px solid var(--ink);border-radius:16px;padding:16px 18px;box-shadow:4px 5px 0 var(--ink);transition:transform .15s,box-shadow .15s}
.door .h3{display:flex;align-items:center;gap:8px}
.door:hover{color:var(--ink);transform:translate(-2px,-2px);box-shadow:6px 7px 0 var(--ink)}
.door-hi{background:var(--n1)}
.ticks{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.ticks li{display:flex;gap:10px;align-items:flex-start}
.ticks svg{flex:none;margin-top:3px;color:var(--acc)}

/* 3D sticky stack */
.stage{flex:1 1 380px;min-width:0;height:580px;display:flex;align-items:center;justify-content:center;perspective:1500px}
.stack{position:relative;width:340px;height:280px;transform-style:preserve-3d;transform:rotateX(var(--rx,50deg)) rotateZ(var(--rz,-26deg));transition:transform .2s ease-out}
.note{box-sizing:border-box;color:var(--ink);border:2.5px solid var(--ink);border-radius:14px;padding:14px 18px;box-shadow:6px 8px 0 rgba(34,48,74,.35);font-size:15px;line-height:1.35}
.note-h{font-size:28px;line-height:1.1;display:block}
.stack-note{position:absolute;left:calc(var(--i) * 18px);top:calc(60px - var(--i) * 40px);width:290px;display:flex;flex-direction:column;gap:2px;transform:translateZ(calc(var(--i) * 80px)) rotate(calc((var(--i) - 1.5) * 2deg))}
.note-static{display:flex;flex-direction:column;gap:6px;padding:20px 22px;font-size:17px}
.note-static:nth-child(odd){transform:rotate(1deg)}.note-static:nth-child(even){transform:rotate(-1deg)}
.big-link{font-size:20px;font-weight:700;word-break:break-word}

/* Product hero visual */
.visual{flex:1 1 360px;min-width:0;display:flex;justify-content:center;position:relative;padding:20px 0;perspective:1400px}
.device{width:290px;border-radius:42px;background:var(--ink);padding:12px;box-shadow:10px 14px 0 rgba(34,48,74,.22);transform:rotateY(var(--ry,-8deg)) rotateX(var(--rx2,4deg));transition:transform .2s ease-out}
.device img{border-radius:30px}
.device .mock{border-radius:30px;min-height:520px}
.sticky{position:absolute;max-width:200px;display:flex;flex-direction:column;gap:2px}
.sticky-0{left:0;top:72px;transform:rotate(-4deg)}
.sticky-1{right:0;bottom:56px;transform:rotate(3deg)}

/* Drawn app screen (shown until a real screenshot is added) */
.mock{background:#fff;display:flex;flex-direction:column;overflow:hidden;font-family:var(--f-body);color:var(--ink);text-align:left}
.mock-top{background:var(--acc);color:#fff;padding:22px 18px 16px;display:flex;flex-direction:column;gap:4px}
.mock-top .mono{opacity:.85}
.mock-title{font-family:var(--f-head);font-weight:800;font-size:26px;line-height:1.1}
.mock-sub{font-size:14px;opacity:.9}
.mock-rows{padding:12px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.mock-row{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1.5px solid var(--hair);border-radius:12px;padding:10px 12px;font-size:14px}
.mock-row.on{border-color:var(--acc);background:var(--tint)}
.mock-btn{margin:0 16px 18px;text-align:center;background:var(--acc);color:#fff;font-weight:700;border-radius:12px;padding:11px;font-size:14px}

/* Proof strip */
.proof{background:var(--ink);color:#fff;position:relative;z-index:4}
.proof-in{display:flex;flex-wrap:wrap;gap:12px 40px;align-items:baseline;padding-top:22px;padding-bottom:22px}
.proof b{font-family:var(--f-head);font-size:28px;font-weight:800}
.proof-hand{font-size:24px;color:var(--n1)}

/* Sections */
.sec{padding-top:80px;display:flex;flex-direction:column;gap:26px}
.sec-tight{padding-top:32px;padding-bottom:16px}
main>.sec:last-child{padding-bottom:80px}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,440px),1fr));gap:24px}
.grid3{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:22px}
.grid4{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:20px}
.split{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start}
.split>*{flex:1 1 340px;min-width:0}
.side{display:flex;flex-direction:column;gap:18px;padding-top:8px}
.next-steps{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px}
.next-steps li::marker{font-weight:700}
.note-quote{margin:0;font-size:15px}.note-quote blockquote{margin:0}.note-quote figcaption{font-size:14px}

/* Cards */
.card{background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:8px}
.card p{color:var(--ink-2)}
.card-dash{background:transparent;border:1.5px dashed #C9C2AE}
.card-tint{background:var(--tint);border-color:transparent}
.card-tint p{color:var(--ink)}
.feat .bar{width:44px;height:6px;border-radius:99px}
.tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;border-radius:99px;padding:3px 10px;border:1px solid var(--hair);background:var(--surface);color:var(--ink-2)}
.tag-tint{background:var(--tint);border-color:transparent;color:var(--ink)}
.dot{width:8px;height:8px;border-radius:50%;flex:none}

/* Product cards */
.pcard{position:relative;background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.pcard:hover{transform:translateY(-3px);box-shadow:0 14px 30px -18px rgba(34,48,74,.45)}
.pcard:focus-within{box-shadow:0 0 0 3px #7FA6E0}
.pcard-shot{display:flex;align-items:flex-start;justify-content:center;height:220px;padding-top:22px;text-decoration:none;color:var(--ink);background:var(--tint);border-bottom:1px solid var(--hair);overflow:hidden}
.pcard-shot:has(img){padding-top:0;align-items:center}
.pcard-shot img{width:100%;height:100%;object-fit:contain}
.shot-mock{width:250px;transform:translateY(6px) rotate(-2deg);transition:transform .3s}
.shot-mock .mock{border-radius:22px 22px 0 0;border:8px solid var(--ink);border-bottom:0;min-height:230px}
.shot-mock .mock-top{padding:14px 14px 10px}.shot-mock .mock-title{font-size:20px}
.pcard:hover .shot-mock{transform:translateY(-4px) rotate(0)}
.pcard-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.pcard-body p{color:var(--ink-2)}
.pcard-link{text-decoration:none}
.pcard-link::after{content:"";position:absolute;inset:0;z-index:1}
.pcard-link:focus-visible{outline:none}
.more{margin-top:auto;font-weight:700;display:inline-flex;align-items:center;gap:6px;color:var(--acc)}
.pcard:hover .more svg{transform:translateX(3px)}
.more svg{transition:transform .2s}

/* Filters */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{font:inherit;font-weight:700;font-size:15px;cursor:pointer;border-radius:99px;padding:9px 16px;min-height:44px;border:1.5px solid var(--ink);background:var(--surface);color:var(--ink);transition:background-color .15s,color .15s}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff}
.chip-n{font-weight:500;opacity:.75}
html:not(.js) .chips,html:not(.js) [data-filter-status]{display:none}
.pcard.is-hidden{display:none}
.empty{padding:24px;border:1.5px dashed var(--ink);border-radius:var(--radius);background:var(--surface)}

/* Services, steps, quotes */
.svc{background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:10px}
.svc p{color:var(--ink-2)}
.ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;border:1.5px solid var(--ink)}
.reuse{display:flex;flex-wrap:wrap;gap:10px 12px;align-items:center;border:1.5px dashed var(--ink);border-radius:16px;padding:16px 20px;background:rgba(255,255,255,.55)}
.reuse-h{font-size:24px}
.reuse-cta{justify-content:space-between;gap:16px 28px;padding:22px 24px;background:var(--surface)}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:20px}
.step{background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);padding:20px 22px;display:flex;flex-direction:column;gap:6px}
.step p{color:var(--ink-2)}
.num{font-family:var(--f-hand);font-size:44px;line-height:1;color:var(--acc)}

/* Messages, plans, FAQ */
.msgs{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:20px}
.msg{border:1.5px solid var(--ink);border-radius:18px 18px 18px 4px;padding:18px 20px;display:flex;flex-direction:column;gap:6px;background:var(--tint)}
.msg-alt{background:var(--surface)}
.msg p{font-size:18px}
.plan{background:var(--surface);border:1px solid var(--hair);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:10px}
.plan-top{border:1.5px solid var(--ink);box-shadow:5px 6px 0 var(--ink)}
.plan-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.price{font-family:var(--f-head);font-weight:800;font-size:40px;line-height:1}
.notes-list{display:flex;flex-direction:column;gap:4px;color:var(--ink-2)}
.faq{display:flex;flex-direction:column;gap:10px;max-width:820px}
.faq details{background:var(--surface);border:1px solid var(--hair);border-radius:14px;padding:0 20px;transition:box-shadow .2s}
.faq details[open]{box-shadow:4px 5px 0 var(--ink);border-color:var(--ink)}
.faq summary{cursor:pointer;font-weight:700;font-size:18px;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-head);font-size:26px;color:var(--acc);transition:transform .2s;flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 16px;color:var(--ink-2)}
.link-row{display:flex;flex-wrap:wrap;gap:18px}
.link-row a{font-weight:700}

/* Calculator */
.calc-in{gap:16px}
.range{display:flex;flex-direction:column;gap:4px;font-weight:500}
.range output{font-weight:700}
.range input{width:100%;accent-color:var(--acc);min-height:32px;cursor:pointer}
.calc-out{display:flex;flex-direction:column;gap:16px}
.result{border-color:transparent}
.result .price{transition:color .2s}

/* Forms */
.lead-form{padding:24px;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:500}
.field input,.field select,.field textarea{font:inherit;font-size:16px;width:100%;padding:11px 14px;border:1.5px solid #9AA3B5;border-radius:12px;background:var(--surface);color:var(--ink);min-height:48px;transition:border-color .15s,box-shadow .15s}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px #C9DCF7}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#B3261E;box-shadow:0 0 0 3px #F6D3D0}
.field-error{color:#B3261E;font-size:14px;font-weight:500}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);cursor:pointer}
.check input{width:20px;height:20px;margin:2px 0 0;accent-color:var(--acc);flex:none}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-status{min-height:1.4em;font-weight:500}
.form-status.ok{color:#1E6B45}
.form-status.err{color:#B3261E}
.lead-form.done .field,.lead-form.done .check,.lead-form.done [data-submit],.lead-form.done .cf-turnstile{display:none}
.lead-form.done .form-status{font-size:19px;padding:12px 0}

/* Prose (privacy) */
.prose{max-width:760px;gap:14px}
.prose p{color:var(--ink-2)}
.note-draft{background:var(--n1);border:1.5px solid var(--ink);border-radius:12px;padding:12px 16px}

/* Footer */
.site-footer{position:relative;z-index:4;margin-top:24px;background:var(--ink);color:#D9E0EC}
.site-footer a,.site-footer .logo{color:#fff}
.site-footer a:hover{color:var(--n1)}
.foot{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px 48px;padding-top:56px;padding-bottom:40px;font-size:15px}
.foot-brand{display:flex;flex-direction:column;gap:8px;max-width:340px}
.foot-brand .logo{font-size:34px;margin-bottom:4px}
.foot-links{display:flex;flex-wrap:wrap;gap:10px 28px;padding-top:10px}
.foot-links a{text-decoration:none;font-weight:500}
/* Divider drawn on the content box so it lines up with the columns, not the wrap padding */
.foot-base{padding-top:20px;padding-bottom:28px;font-size:14px;color:#AEB9CC;background:linear-gradient(rgba(255,255,255,.16),rgba(255,255,255,.16)) content-box top/100% 1px no-repeat}

/* Scroll reveal (only when JS is on, so content never stays hidden) */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.in{opacity:1;transform:none}

/* Tablet */
@media (max-width:900px){
  .wrap{padding-left:56px;padding-right:24px}
  .margin{left:32px}.margin-r{right:10px}
  .links{gap:18px}
  .sticky{display:none}
  .stage{height:440px}
}
/* Phone */
@media (max-width:720px){
  html{scroll-padding-top:76px}
  .wrap{padding-left:16px;padding-right:16px}
  .foot{grid-template-columns:1fr;padding-top:40px}
  .margin,.margin-r{display:none}
  .nav{min-height:64px}
  .logo{font-size:28px}
  .menu-btn{display:inline-flex}
  .links{display:none;width:100%;flex-direction:column;align-items:stretch;gap:0;padding-bottom:12px}
  .links.open{display:flex}
  .links a{padding:14px 4px;border-bottom:1px solid var(--hair)}
  .links .btn{margin-top:12px;padding:14px}
  .site-header.menu-open{background:var(--bg);box-shadow:0 10px 24px -12px rgba(34,48,74,.35)}
  .hero-in{gap:8px;padding-bottom:40px}
  .stage{height:auto;flex-basis:100%;padding:8px 0 12px;perspective:none}
  .stack{transform:none!important;width:100%;max-width:330px;height:calc(3 * 58px + 104px)}
  .stack-note{left:calc(var(--i) * 8px);top:calc(var(--i) * 58px);width:calc(100% - 24px);transform:rotate(calc((var(--i) - 1.5) * -1.6deg))}
  .visual{padding:8px 0}
  .device{width:250px;transform:none!important}
  .device .mock{min-height:440px}
  .sec{padding-top:56px}
  main>.sec:last-child{padding-bottom:56px}
  .sec-tight{padding-top:12px}
  .hero-sm .wrap{padding-bottom:20px}
  .actions .btn{flex:1 1 100%}
  .chips{flex-wrap:nowrap;overflow-x:auto;margin:0 -16px;padding:0 16px 6px;scrollbar-width:none}
  .chips::-webkit-scrollbar{display:none}
  .chip{flex:none}
  .proof b{font-size:24px}
  .pcard-shot{height:190px}
}
@media (max-width:380px){
  .doors{grid-template-columns:1fr}
}
@media (hover:none){.pcard:hover{transform:none}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .js .reveal{opacity:1;transform:none}
}