/* KNCad inner pages. Same world as the home page: night header, paper reading surface, steel + rebar accents. */
:root{
  --night:#07090c; --night-2:#0e1217; --rule-d:#232a33; --snow:#f3f5f7; --fog:#9aa3ae; --fog-2:#6c7581;
  --paper:#f2f3f5; --white:#ffffff; --rule:#dadee3; --ink:#0d1014; --ink-2:#4f5863; --ink-3:#6b737d;
  --rebar:#e8702a; --rebar-ink:#b9500f; --steel:#2ba6b4; --steel-ink:#167a86; --axis:#d6454c;
  --f-sans:"Geist",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"Geist Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --nav:56px; --ease:cubic-bezier(.22,.7,.12,1);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--f-sans);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--night)}
img,svg{max-width:100%}
a{color:var(--steel-ink)}
a:hover{color:var(--ink)}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{text-wrap:balance;font-weight:650;letter-spacing:-.03em}
:focus-visible{outline:2px solid var(--steel);outline-offset:3px;border-radius:6px}
.wrap{max-width:1180px;margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.narrow{max-width:760px}
.skip{position:absolute;left:-999px;top:8px;background:var(--snow);color:var(--ink);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:16px}

/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(7,9,12,.86);backdrop-filter:saturate(170%) blur(20px);-webkit-backdrop-filter:saturate(170%) blur(20px);border-bottom:1px solid rgba(255,255,255,.07);color:var(--snow)}
.nav .wrap{display:flex;align-items:center;gap:26px;height:var(--nav)}
.brand{display:flex;align-items:center;gap:9px;color:var(--snow);text-decoration:none;font-weight:650;font-size:1.05rem;letter-spacing:-.01em;margin-right:auto}
.brand:hover{color:#fff}
.brand svg{width:24px;height:24px;flex:none}
.nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0;font-size:.86rem}
.nav ul a{color:var(--fog);text-decoration:none;transition:color .2s}
.nav ul a:hover,.nav ul a[aria-current="page"]{color:var(--snow)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:999px;font:inherit;font-size:.95rem;font-weight:550;text-decoration:none;cursor:pointer;border:0;transition:background .2s,color .2s,box-shadow .2s}
.btn.primary{background:var(--snow);color:var(--ink)}
.btn.primary:hover{background:#fff;color:var(--ink)}
.btn.dark{background:var(--ink);color:var(--snow)}
.btn.dark:hover{background:#000;color:#fff}
.btn.ghost{background:transparent;color:var(--snow);box-shadow:inset 0 0 0 1px rgba(243,245,247,.3)}
.btn.ghost:hover{color:#fff;box-shadow:inset 0 0 0 1px rgba(243,245,247,.65)}
.nav .btn{padding:7px 15px;font-size:.82rem}
.menu-btn{display:none;background:none;border:0;color:var(--snow);padding:8px;margin-right:-8px;cursor:pointer}
.menu-btn svg{width:22px;height:22px}
@media (max-width:900px){
  .menu-btn{display:block}
  .nav ul{display:none;position:absolute;left:0;right:0;top:var(--nav);flex-direction:column;gap:0;background:var(--night);border-bottom:1px solid var(--rule-d);padding:6px max(16px,env(safe-area-inset-right,0px)) 14px max(16px,env(safe-area-inset-left,0px))}
  .nav ul.open{display:flex}
  .nav ul a{display:block;padding:12px 0;font-size:1rem;border-bottom:1px solid var(--rule-d)}
  .nav .btn{display:none}
}

/* page head */
.phead{background:var(--night);color:var(--snow);padding-block:clamp(56px,8vw,112px) clamp(48px,6vw,84px);position:relative;overflow:hidden}
.phead::after{content:"";position:absolute;inset:auto -10% -40% 40%;height:120%;background:radial-gradient(closest-side,rgba(43,166,180,.16),transparent 70%);pointer-events:none}
.phead .wrap{position:relative;z-index:1}
.eyebrow{font-family:var(--f-mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--rebar);font-weight:500}
.phead h1{font-size:clamp(2.3rem,1.3rem + 3.8vw,4.6rem);line-height:1.02;letter-spacing:-.045em;margin-top:14px;max-width:20ch}
.phead .lead{font-size:clamp(1.1rem,1rem + .5vw,1.4rem);line-height:1.45;color:var(--fog);margin-top:18px;max-width:52ch}
.phead .lead b{color:var(--snow);font-weight:550}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0 0 18px;padding:0;font-size:.82rem;color:var(--fog)}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--fog-2)}
.crumbs a{color:var(--fog);text-decoration:none}
.crumbs a:hover{color:var(--snow)}
.meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:20px;font-size:.86rem;color:var(--fog)}
.meta a{color:var(--snow)}

/* sections */
.sec{padding-block:clamp(56px,8vw,110px)}
.sec.paper{background:var(--paper)}
.sec h2.big{font-size:clamp(1.9rem,1.2rem + 2.4vw,3.2rem);line-height:1.05;letter-spacing:-.04em}
.sec .intro{color:var(--ink-2);font-size:1.15rem;margin-top:14px;max-width:60ch}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:44px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:44px}
@media (max-width:900px){.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--paper);border-radius:20px;padding:26px;display:flex;flex-direction:column;gap:10px;min-width:0}
.sec.paper .card{background:var(--white)}
.card h3{font-size:1.25rem;line-height:1.2}
.card p{color:var(--ink-2);font-size:.97rem}
.card .k{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
a.card{text-decoration:none;color:var(--ink);transition:transform .35s var(--ease),box-shadow .35s}
a.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px -18px rgba(13,16,20,.35);color:var(--ink)}
a.card .go{margin-top:auto;padding-top:6px;color:var(--steel-ink);font-weight:550;font-size:.92rem}

/* prose (articles, feature pages, legal) */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start}
@media (max-width:980px){.layout{grid-template-columns:1fr}.aside{order:-1}}
.prose{font-size:1.08rem;line-height:1.72;color:#1b2026;min-width:0}
.prose > * + *{margin-top:1.05em}
.prose h2{font-size:clamp(1.45rem,1.2rem + .9vw,1.9rem);line-height:1.18;margin-top:1.9em;letter-spacing:-.03em;scroll-margin-top:calc(var(--nav) + 20px)}
.prose h3{font-size:1.22rem;line-height:1.25;margin-top:1.6em}
.prose p.lede{font-size:1.25rem;line-height:1.55;color:var(--ink-2)}
.prose ul,.prose ol{padding-left:1.25em}
.prose li+li{margin-top:.4em}
.prose strong{font-weight:600;color:var(--ink)}
.prose a{text-decoration-thickness:1px;text-underline-offset:3px}
.prose blockquote{margin:1.4em 0;padding:16px 20px;border-left:3px solid var(--rebar);background:var(--paper);border-radius:0 12px 12px 0;color:var(--ink-2)}
.prose blockquote p{margin:0}
.tbl{overflow-x:auto;margin-top:1.2em}
.prose table{border-collapse:collapse;width:100%;font-size:.95rem;font-variant-numeric:tabular-nums}
.prose th,.prose td{padding:9px 12px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
.prose th{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.prose code{font-family:var(--f-mono);font-size:.88em;background:var(--paper);padding:1px 5px;border-radius:4px}
.aside{position:sticky;top:calc(var(--nav) + 24px);display:grid;gap:18px}
@media (max-width:980px){.aside{position:static}}
.toc{border:1px solid var(--rule);border-radius:16px;padding:18px 20px}
.toc p{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.toc ol{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:.92rem}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--ink)}
@media (max-width:980px){.toc{display:none}}
.cta-box{background:var(--night);color:var(--snow);border-radius:20px;padding:24px;display:grid;gap:12px}
.cta-box p{color:var(--fog);font-size:.95rem}
.cta-box strong{font-size:1.15rem;letter-spacing:-.02em}
.faq{margin-top:2.4em;border-top:1px solid var(--rule)}
.faq h2{margin-top:1.2em}
details{border-bottom:1px solid var(--rule)}
summary{list-style:none;cursor:pointer;padding:18px 40px 18px 0;position:relative;font-weight:600;font-size:1.05rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:8px;top:50%;width:9px;height:9px;border-right:1.6px solid var(--ink);border-bottom:1.6px solid var(--ink);transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease)}
details[open] summary::after{transform:translateY(-25%) rotate(-135deg)}
details > div{padding:0 0 18px;color:var(--ink-2)}
.related{margin-top:3em;padding-top:2em;border-top:1px solid var(--rule)}
.related h2{font-size:1.4rem;margin-top:0}
.taglist{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-block;font-size:.82rem;padding:5px 12px;border-radius:999px;background:var(--paper);color:var(--ink-2);text-decoration:none}
.tag:hover,.tag[aria-current="page"]{background:var(--ink);color:var(--snow)}

/* blog index */
.blog-tools{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:28px}
.search{flex:1 1 280px;max-width:420px;position:relative}
.search input{width:100%;font:inherit;font-size:1rem;padding:12px 16px 12px 42px;border-radius:999px;border:1px solid var(--rule);background:var(--white);color:var(--ink)}
.search svg{position:absolute;left:15px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--ink-3)}
.posts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:32px}
@media (max-width:980px){.posts{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.posts{grid-template-columns:1fr}}
.post{background:var(--white);border:1px solid var(--rule);border-radius:18px;padding:22px;display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink);min-width:0;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.post:hover{transform:translateY(-3px);box-shadow:0 14px 34px -20px rgba(13,16,20,.4);border-color:transparent;color:var(--ink)}
.post .k{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--rebar-ink)}
.post h2,.post h3{font-size:1.14rem;line-height:1.28;letter-spacing:-.02em}
.post p{font-size:.93rem;color:var(--ink-2)}
.post .rt{margin-top:auto;padding-top:6px;font-size:.8rem;color:var(--ink-3)}
.empty{margin-top:28px;color:var(--ink-2)}

/* contact */
.form{display:grid;gap:16px}
.row2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:620px){.row2{grid-template-columns:1fr}}
.field{display:grid;gap:6px}
.field label{font-size:.88rem;font-weight:550}
.field input,.field select,.field textarea{font:inherit;font-size:1rem;padding:12px 14px;border-radius:12px;border:1px solid var(--rule);background:var(--white);color:var(--ink);width:100%}
.field textarea{min-height:150px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:var(--ink-2)}
.check input{margin-top:4px;accent-color:var(--rebar)}
.status{font-size:.95rem;padding:12px 14px;border-radius:12px;background:var(--paper)}
.contact-list{display:grid;gap:16px}
.contact-list div{border-top:1px solid var(--rule);padding-top:14px}
.contact-list span{display:block;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:4px}
.contact-list strong{font-size:1.1rem;font-weight:550;word-break:break-word}
.copy{font:inherit;font-size:.8rem;margin-left:8px;padding:3px 10px;border-radius:999px;border:1px solid var(--rule);background:var(--white);cursor:pointer;color:var(--ink-2)}

/* footer */
.foot{background:var(--night);color:var(--fog);font-size:.9rem;padding-block:56px 32px}
.foot .cols{display:grid;grid-template-columns:1.4fr repeat(3,minmax(0,1fr));gap:32px}
@media (max-width:820px){.foot .cols{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.foot .cols{grid-template-columns:1fr}}
.foot h2{font-size:.78rem;font-family:var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--fog-2);font-weight:500;margin-bottom:12px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.foot a{color:var(--fog);text-decoration:none}
.foot a:hover{color:var(--snow)}
.foot .about{display:grid;gap:12px;max-width:34ch}
.foot .bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:44px;padding-top:22px;border-top:1px solid var(--rule-d);font-size:.82rem;color:var(--fog-2)}
.band-cta{background:var(--night);color:var(--snow);text-align:center;padding-block:clamp(64px,9vw,120px)}
.band-cta h2{font-size:clamp(2rem,1.2rem + 3.2vw,4rem);letter-spacing:-.05em;line-height:1}
.band-cta p{color:var(--fog);margin:16px auto 0;max-width:46ch;font-size:1.1rem}
.band-cta .actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px}
.notfound{text-align:center;padding-block:clamp(80px,14vw,180px)}
.notfound .code{font-family:var(--f-mono);color:var(--rebar-ink);letter-spacing:.2em}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}html{scroll-behavior:auto}}

/* ---- license page ---- */
.h2s{font-size:clamp(1.8rem,1.3rem + 1.6vw,2.6rem);line-height:1.08;margin-top:8px}
.lic{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:980px){.lic{grid-template-columns:1fr;max-width:560px;margin-inline:auto}}
.plan{background:var(--paper);border:1px solid var(--rule);border-radius:24px;padding:30px;display:grid;grid-template-rows:auto auto auto auto 1fr auto;gap:14px;min-width:0;position:relative}
.plan.feat{background:var(--ink);color:var(--snow);border-color:var(--ink);box-shadow:0 40px 80px -40px rgba(13,16,20,.55)}
.plan .tag{position:absolute;top:22px;right:22px;font:500 .68rem var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--rebar);border:1px solid rgba(232,112,42,.5);border-radius:999px;padding:3px 9px}
.plan .k{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.plan.feat .k{color:var(--fog)}
.plan h2,.plan h3{font-size:1.6rem;letter-spacing:-.035em;line-height:1.1}
.plan .pr b{font-size:2rem;letter-spacing:-.04em;font-weight:650}
.plan .pl{color:var(--ink-2);font-size:.98rem;line-height:1.45;padding-bottom:14px;border-bottom:1px solid var(--rule)}
.plan.feat .pl{color:var(--fog);border-color:var(--rule-d)}
.plan ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;align-content:start}
.plan li{display:flex;gap:10px;font-size:.95rem;color:var(--ink-2);line-height:1.4}
.plan.feat li{color:var(--fog)}
.plan li::before{content:"";flex:none;width:16px;height:16px;margin-top:2px;border-radius:50%;background:rgba(43,166,180,.14) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.2l2.3 2.3 4.7-5' fill='none' stroke='%23167a86' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat}
.plan .btn{margin-top:10px;width:100%}
.plan:not(.feat) .btn.primary{background:var(--ink);color:var(--snow)}
.plan.feat .btn.primary{background:var(--snow);color:var(--ink)}
.sec.film{padding-bottom:0}
.sec.film + .sec{padding-top:clamp(48px,6vw,80px)}