/* Landing page (index.html) and the 404 page (404.html, its .nf-* rules at the end).
   Light/dark follows the device on a first visit; a saved mc-theme wins (see the head script). */
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url(/assets/fonts/inter-latin-var.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:100 800;font-display:swap;src:url(/assets/fonts/jetbrains-mono-latin-wght-normal.woff2) format("woff2")}

:root{--art:#eef4f8;--paper:#fff;--plate:#ecf4f7;--ink:#1f3b51;--ink-2:#5f7689;--rule:#d9e4ea;--rule-2:#a9bcc8;--steel:#b32533;--navy:#1f3b51;--chip:#1f3b51;--hero1:#8c9da4;--hero2:#6f8590;--rad:4px;--btn:#b32533;--accent-text:#b32533;--panel:#fff;--mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;color-scheme:light}
:root[data-theme="dark"]{--art:#060f18;--panel:#0a1620;--paper:#0b1620;--plate:#102130;--ink:#eaf2f7;--ink-2:#b6c8d4;--rule:#243b52;--rule-2:#35506a;--steel:#e04a58;--chip:#9fc3dc;--hero1:#1b3347;--hero2:#0f2030;--btn:#d63a49;--accent-text:#ff7f8a;color-scheme:dark}

*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}h1,h2,h3,p,ul,dl,dd{margin:0}ul{padding:0;list-style:none}h1,h2{text-wrap:balance}
[hidden]{display:none!important}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
a:focus-visible{outline:2px solid var(--accent-text);outline-offset:3px;border-radius:3px}
.hero a:focus-visible{outline-color:#fff}

/* theme-matched images: .t-l shows in light, .t-d in dark; .dk is the desktop crop, .ph the phone crop */
.t{display:none}
:root[data-theme="light"] .t-l,:root[data-theme="dark"] .t-d,:root:not([data-theme]) .t-l{display:block}
@media(min-width:701px){.t.ph{display:none!important}}
@media(max-width:700px){.t.dk{display:none!important}}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;font-weight:600;font-size:14px;letter-spacing:.08em;text-transform:uppercase;background:var(--btn);color:#fff;border-radius:var(--rad)}
.btn:hover{filter:brightness(1.08)}
.shot{border-radius:12px;overflow:hidden;box-shadow:0 18px 50px -18px rgba(0,0,0,.35),0 0 0 1px var(--rule)}
.shot img{width:100%;height:auto;vertical-align:top}
.phoneimg{border-radius:30px;border:6px solid #15171a;box-shadow:0 24px 60px -20px rgba(0,0,0,.55);overflow:hidden}
.phoneimg img{width:100%;height:auto;vertical-align:top}
/* hero pictures: the frame stays invisible until its picture has arrived, so only the hero background shows
   (no empty white or dark phone). Space is already reserved by the width/height attributes, so nothing jumps. */
.hero .shot,.hero .phoneimg{transition:opacity .3s ease}
.hero .pend{opacity:0}

/* hero */
.hero{background:linear-gradient(110deg,var(--hero1) 30%,var(--hero2));color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-8%;top:-30%;width:62%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.2),transparent 65%);pointer-events:none}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;height:92px;position:relative;z-index:2}
/* logo and name sized up (owner, 2026-10-16: option C on desktop, A on phones) */
.brand{display:flex;align-items:center;gap:16px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;font-size:21px}
.brand-mark{width:52px;height:52px;padding:5px;background:var(--navy);border-radius:5px;flex:none}
.hd nav{display:flex;gap:26px;font-size:14px;font-weight:500}
.hero .wrap.hx{text-align:center;padding-top:20px;padding-bottom:84px;position:relative;z-index:2}
.hero h1{font-size:clamp(38px,5.2vw,64px);font-weight:600;letter-spacing:-.02em;line-height:1.08;margin:0 auto 18px;max-width:760px}
.hero p{font-size:19px;max-width:470px;margin:0 auto 32px;color:#eef3f6}
.hero .btn{min-width:230px}
.pair{position:relative;max-width:920px;margin:56px auto 0}
.pair .shot{width:88%;border:0;box-shadow:0 30px 70px -20px rgba(8,20,32,.65);transform:translateY(6px)}
.pair .phoneimg{position:absolute;right:0;bottom:-46px;width:22%}

/* section headings */
.cats{padding:90px 0 30px}
.cats h2,.feat-h h2{text-align:center;font-size:28px;font-weight:600;margin-bottom:10px}
.cats .sub,.feat-h .sub{text-align:center;color:var(--ink-2);margin-bottom:44px}
.catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat{position:relative;border:1px solid var(--rule);border-radius:10px;padding:26px 24px;background:var(--paper);display:flex;flex-direction:column}
/* one flat colour behind the drawing: the app's own panel tone, so it matches the screenshots (owner chose C, 2026-10-16) */
.cat .art{height:150px;border-radius:8px;background:var(--art);margin-bottom:20px;padding:8px}
.cat .art img{width:100%;height:100%;object-fit:contain;background:none;border-radius:4px;padding:14px}
.cat h3{font-size:18px;font-weight:600;margin-bottom:10px}
.cat li{font-size:15.5px;color:var(--ink-2);padding:3px 0}
.cat li a{position:relative;z-index:1}.cat li a:hover{color:var(--ink)}

/* feature bands */
.feat-h{padding:60px 0 20px}
.band{padding:80px 0}.band.alt{background:var(--plate)}
.band .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:64px;align-items:center}
.band.flip .wrap{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}
.band.flip .shot{order:2}
.band small{display:block;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--accent-text);margin-bottom:12px}
.band h3{font-size:30px;font-weight:600;letter-spacing:-.01em;line-height:1.15;margin-bottom:14px}
.band p{color:var(--ink-2);margin-bottom:18px;max-width:440px}
.band dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:15px;margin-bottom:22px}
.band dt{font-family:var(--mono);font-size:12px;color:var(--chip);background:var(--plate);padding:2px 8px;border-radius:3px;justify-self:start}
.band.alt dt{background:var(--paper)}
.band .more{font-size:15px;font-weight:600;color:var(--accent-text)}

/* details behind the numbers */
.refs{background:var(--paper);padding:112px 0 28px;text-align:center}
.refs h2{font-size:38px;font-weight:600;letter-spacing:-.015em;margin-bottom:16px}
.refs .intro{color:var(--ink-2);max-width:600px;margin:0 auto 68px;font-size:18.5px}
.refcols{display:grid;grid-template-columns:repeat(3,1fr);max-width:1060px;margin:0 auto}
.refcols>div{padding:10px 52px}.refcols>div+div{border-left:1px solid var(--rule)}
.refcols h3{font-size:19.5px;font-weight:600;margin-bottom:10px}
.refcols p{font-size:16px;color:var(--ink-2);max-width:260px;margin:0 auto}

/* closing band + footer */
.cta{background:var(--plate);margin-top:72px;padding:84px 0;text-align:center}
.cta h2{font-size:30px;font-weight:600;margin-bottom:12px}
.cta p{color:var(--ink-2);max-width:640px;margin:0 auto 30px;font-size:17px}
.ft{padding:70px 0 40px}
.ft .wrap{display:grid;grid-template-columns:1.35fr 1fr 1.2fr 1.5fr;gap:48px;font-size:14.5px;color:var(--ink-2)}
.ft b{display:block;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink);margin-bottom:12px}
.ft a{display:block;margin-bottom:6px}.ft a:hover{color:var(--ink)}
.ft .copy{grid-column:1/-1;text-align:right;font-size:14px}

@media(max-width:900px){
 .hd nav{display:none}
 .catgrid{grid-template-columns:repeat(2,1fr)}
 .band .wrap,.band.flip .wrap{grid-template-columns:1fr;gap:30px}.band.flip .shot{order:0}.band{padding:56px 0}
 .ft .wrap{grid-template-columns:1fr;gap:30px}.ft .copy{text-align:left}
}
@media(max-width:700px){
 .hd .wrap{height:84px}.brand{gap:12px;font-size:15.5px}.brand-mark{width:34px;height:34px;padding:3px;border-radius:3px}
 .band .shot{max-width:250px;margin-inline:auto;border:6px solid #15171a;border-radius:28px;background:#fff;box-shadow:0 20px 50px -20px rgba(0,0,0,.5)}
 .pair .shot{display:none}.pair .phoneimg{position:static;width:230px;margin:0 auto}.pair{margin-top:34px}
 .refs{padding:72px 0 10px}.refs h2{font-size:30px}
 .refcols{grid-template-columns:1fr}.refcols>div{padding:24px 0}.refcols>div+div{border-left:0;border-top:1px solid var(--rule)}
}
@media(max-width:600px){.wrap{padding:0 18px}.btn{width:100%}.catgrid{grid-template-columns:1fr}}

/* dark mode: screenshots get a hairline border and a faint halo so they separate from the navy page */
:root[data-theme="dark"] .band .shot,:root[data-theme="dark"] .hero .shot{border:1px solid #46647f;box-shadow:0 0 0 7px rgba(255,255,255,.05),0 34px 70px -22px rgba(0,0,0,.7)}
:root[data-theme="dark"] .hero .phoneimg{box-shadow:0 0 0 1px #46647f}
@media(max-width:700px){:root[data-theme="dark"] .band .shot{border:6px solid #15171a;box-shadow:0 0 0 1px #46647f}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* 404 page: the landing hero with a small dimensioned drawing, then the tool directory (owner, 2026-10-16: option C, "Out of tolerance.") */
.nf-hero .wrap.hx{padding-bottom:72px}
.nf-code{font-family:var(--mono);font-size:13px;letter-spacing:.2em;font-weight:600;color:#cfe0ea;margin-bottom:14px}
.nf-hero p{max-width:520px}
.nf-fig{max-width:430px;margin:40px auto 0;background:var(--panel);border:1px solid var(--rule);border-radius:10px;padding:14px 16px 8px;position:relative;z-index:2;box-shadow:0 24px 60px -24px rgba(8,20,32,.6)}
.nf-fig svg{display:block;width:100%;height:auto;font-family:Inter,system-ui,sans-serif;font-weight:400;font-variant-numeric:tabular-nums}
.nf-dir{padding:84px 0 40px}
.nf-dir h2{text-align:center;font-size:28px;font-weight:600;margin-bottom:44px}
.nf-cols{display:grid;grid-template-columns:repeat(5,1fr);gap:28px;border-top:1px solid var(--rule);padding-top:34px}
.nf-col h3{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--accent-text);margin-bottom:14px}
.nf-col li{font-size:15.5px;padding:4px 0}.nf-col li a{color:var(--ink-2)}.nf-col li a:hover{color:var(--ink)}
@media(max-width:1100px){.nf-cols{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.nf-cols{grid-template-columns:1fr}.nf-dir{padding-top:56px}.nf-fig{margin-top:30px}}