/*
 * mastofin.masto.one — the Masto Fin product page.
 *
 * Same skeleton, rhythm and tokens as apps/site (masto.one), so the two sites
 * read as one family: paper-first editorial, one ink band, Masto Blue used only
 * for a primary button and a focus ring.
 *
 * Contrast: every pair used here is asserted in checks/site.test.mjs.
 *   ink/paper 17.81 · slate/paper 5.68 · blue/paper 5.40 · paper/ink 17.81
 *   fog/ink 8.08 · slate/mist 4.74 · paper/blue 5.40
 * Blue on ink is 3.30 — a focus ring, never a word. The dark sections use fog.
 */
:root{--ink:#0B0D12;--paper:#F6F5F1;--graphite:#2A2D34;--slate:#5B6170;--mist:#E3E1DB;--fog:#A3A7B3;--blue:#2E4BFF;--blue-deep:#1A2FCC;
--sans:"Manrope","Helvetica Neue",Arial,sans-serif;--mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;--gutter:clamp(20px,5vw,72px);--max:1296px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:88px}
body{margin:0;background:var(--paper);color:var(--ink);font:500 17px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img,svg{display:block}h1,h2,h3,p,dl,dd,dt{margin:0}
ol,ul{margin:0;padding:0;list-style:none}
em{font-style:normal;font-weight:700}
.wrap{width:min(100% - 2*var(--gutter),var(--max));margin-inline:auto}
.mono{display:block;font:500 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--slate)}
.ink .mono,.contact .mono,footer .mono{color:var(--fog)}
.skip{position:fixed;left:16px;top:-64px;padding:12px 16px;background:var(--blue);color:var(--paper);border-radius:8px;z-index:100;font-weight:700;transition:top .12s}
.skip:focus{top:16px}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:2px}
.ink :focus-visible,.contact :focus-visible,footer :focus-visible{outline-color:var(--paper)}
.arr{width:16px;height:16px;flex:none}
code{font:500 .88em/1.4 var(--mono);background:var(--mist);color:var(--ink);padding:1px 6px;border-radius:4px}

/* ── buttons ───────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 22px;border-radius:10px;font-weight:700;font-size:15px;transition:background .15s,color .15s,border-color .15s,transform .15s;white-space:nowrap}
@media(prefers-reduced-motion:no-preference){.btn:hover{transform:translateY(-1px)}}
.btn.sm{min-height:42px;padding:0 18px;font-size:14px}
.btn-ink{background:var(--ink);color:var(--paper)}.btn-ink:hover{background:var(--blue)}
.btn-line{border:1px solid var(--slate);color:var(--ink);background:transparent}.btn-line:hover{border-color:var(--ink);background:var(--mist)}
.btn-paper{background:var(--paper);color:var(--ink)}.btn-paper:hover{background:#fff}
.btn-ghost{border:1px solid rgba(246,245,241,.4);color:var(--paper)}.btn-ghost:hover{border-color:var(--paper);background:rgba(246,245,241,.08)}

/* ── nav ───────────────────────────────────────────────────────────────── */
.nav{position:sticky;top:0;z-index:50;background:rgba(246,245,241,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--mist)}
.nav .wrap{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.links{display:flex;gap:28px}
.links a{font-size:15px;font-weight:600;color:var(--slate);transition:color .15s}.links a:hover{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:10px}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--slate);border-radius:10px;background:transparent;color:var(--ink);cursor:pointer;align-items:center;justify-content:center}
.menu-btn svg{width:18px;height:18px}
.mobile-menu{display:none;border-top:1px solid var(--mist);background:var(--paper)}
.mobile-menu[data-open="true"]{display:block}
.mobile-menu .wrap{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;min-height:0;padding:8px 0 20px}
.mobile-menu a{padding:15px 0;font-size:17px;font-weight:600;border-bottom:1px solid var(--mist)}

/* ── hero ──────────────────────────────────────────────────────────────── */
.hero .wrap:not(.strip){display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);align-items:center;gap:48px;padding:clamp(56px,8vw,112px) 0 clamp(40px,5vw,72px)}
.hero-text{display:flex;flex-direction:column;gap:26px}
.hero h1{font-size:clamp(40px,6.4vw,92px);line-height:.98;letter-spacing:-.045em;font-weight:800;max-width:15ch}
.hero-lede{font-size:clamp(17px,1.5vw,21px);line-height:1.5;color:var(--slate);max-width:60ch}
.hero-note{font-size:14px;color:var(--slate);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.hero-note .mono{display:inline-block;text-transform:none;letter-spacing:.02em}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:4px}
.hero-mark{display:flex;justify-content:flex-end;padding-right:clamp(0px,3vw,40px)}
.hero-mark img{width:clamp(120px,22vw,300px);height:auto}
.strip{display:flex;align-items:center;gap:clamp(20px,4vw,56px);flex-wrap:wrap;padding:22px 0;border-top:1px solid var(--mist);border-bottom:1px solid var(--mist)}
.proofs{display:flex;gap:clamp(16px,2.4vw,32px);flex-wrap:wrap;font-size:14px;font-weight:600;color:var(--ink)}
.proofs li{display:flex;align-items:center;gap:8px}
.proofs li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);flex:none}

/* ── section furniture ─────────────────────────────────────────────────── */
.section{padding:clamp(64px,8vw,120px) 0}
.head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 64px;align-items:end;margin-bottom:clamp(36px,4.5vw,64px)}
.head .mono{grid-column:1/-1}
h2{font-size:clamp(32px,4.2vw,60px);line-height:1;letter-spacing:-.04em;font-weight:800}
.lede{font-size:clamp(16px,1.3vw,19px);line-height:1.55;color:var(--slate);max-width:56ch;align-self:end}
.ink .lede,.contact .lede{color:var(--fog)}

/* ── what it removes ───────────────────────────────────────────────────── */
.walk{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,3vw,48px)}
.lane{border-top:2px solid var(--ink);padding-top:24px;display:flex;flex-direction:column;gap:14px}
.lane-after{border-top-color:var(--blue)}
.lane h3{font-size:24px;font-weight:700;letter-spacing:-.02em}
.lane-sub{font-size:15px;color:var(--slate)}
.steps{display:flex;flex-direction:column;counter-reset:step}
.steps li{counter-increment:step;display:grid;grid-template-columns:28px minmax(0,1fr);gap:14px;padding:14px 0;border-bottom:1px solid var(--mist);font-size:15px;line-height:1.5}
.steps li::before{content:counter(step,decimal-leading-zero);font:500 12px/1.9 var(--mono);color:var(--slate)}
/* One grid item per column. Loose text in a grid container becomes its own
   anonymous item and drops onto the next row, into the 28px counter column. */
.step-body{display:block;min-width:0}
.who{display:block;font:500 11px/1.6 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--slate)}
.lane-before .steps li{color:var(--ink)}
.tag{display:inline-block;margin-top:8px;font:500 11px/1.7 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--slate);background:var(--mist);padding:1px 8px;border-radius:4px}
.steps-auto li:not(.human){color:var(--slate)}
.steps-auto li.human{color:var(--ink);font-weight:600;border-bottom:0;background:linear-gradient(90deg,rgba(46,75,255,.07),transparent);box-shadow:inset 3px 0 0 var(--blue);padding-left:14px;grid-template-columns:28px minmax(0,1fr)}
.tag-human{background:var(--ink);color:var(--paper)}
.lane-foot{font-size:14px;color:var(--slate);font-style:italic;padding-top:4px}
.honesty{margin-top:clamp(32px,4vw,56px);padding:24px 28px;border:1px solid var(--mist);border-left:3px solid var(--ink);border-radius:var(--radius,12px);background:#fff;font-size:15px;line-height:1.6;color:var(--ink);max-width:82ch}
.honesty .mono{margin-bottom:8px}

/* ── platform ──────────────────────────────────────────────────────────── */
.legend{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px 32px;padding:20px 0 28px;border-top:1px solid var(--mist);border-bottom:1px solid var(--mist);margin-bottom:clamp(28px,3.5vw,48px)}
.legend>div{display:flex;flex-direction:column;gap:8px}
.legend dd{font-size:14px;line-height:1.5;color:var(--slate)}
.badge{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;font:500 11px/1.9 var(--mono);letter-spacing:.1em;text-transform:uppercase;padding:2px 10px;border-radius:999px;border:1px solid transparent}
.badge[data-status="live"]{background:var(--ink);color:var(--paper)}
.badge[data-status="in-build"]{background:var(--mist);color:var(--ink)}
.badge[data-status="designed"]{border-color:var(--slate);color:var(--slate)}
.feats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--mist);border:1px solid var(--mist)}
.feat{background:var(--paper);padding:28px;display:flex;flex-direction:column;gap:12px}
.feat-wide{grid-column:span 2}
.feat-full{grid-column:span 3}
.feat h3{font-size:22px;font-weight:700;letter-spacing:-.015em;line-height:1.25}
.feat p{font-size:15px;line-height:1.6;color:var(--slate)}
.feat strong{color:var(--ink);font-weight:700}
.feat a{color:var(--blue-deep);font-weight:700;text-decoration:underline;text-underline-offset:3px}
.feat a:hover{color:var(--ink)}
.quote-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 12px;margin:4px 0}
.ui-string{font:500 13px/1.6 var(--mono);color:var(--ink);background:var(--mist);border-radius:6px;padding:8px 12px}
.np .ui-string{margin-top:8px;display:inline-block}
[lang="ne"]{font-family:var(--sans)}
.ui-string[lang="ne"]{font-family:var(--sans);font-size:14px;font-weight:600}

/* ── sovereign AI (ink band) ───────────────────────────────────────────── */
.ink{background:var(--ink);color:var(--paper)}
.caps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid rgba(246,245,241,.2)}
.cap{display:flex;flex-direction:column;gap:14px;padding:32px 32px 32px 0;border-right:1px solid rgba(246,245,241,.2)}
.cap+.cap{padding-left:32px}.cap:last-child{border-right:0;padding-right:0}
.cap h3{font-size:clamp(24px,2.3vw,34px);font-weight:800;letter-spacing:-.03em;line-height:1.05}
.cap p{font-size:15px;line-height:1.6;color:var(--fog)}
.cap em{color:var(--paper)}
.rails{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:clamp(32px,4vw,56px);padding-top:clamp(32px,4vw,56px);border-top:1px solid rgba(246,245,241,.2)}
.rail h3{font-size:17px;font-weight:700;letter-spacing:-.01em;margin-bottom:8px}
.rail p{font-size:14px;line-height:1.6;color:var(--fog)}
.caveat{margin-top:clamp(32px,4vw,56px);padding:24px 28px;border:1px solid rgba(246,245,241,.25);border-left:3px solid var(--paper);border-radius:12px;font-size:15px;line-height:1.6;color:var(--fog);max-width:82ch}
.caveat strong,.caveat em{color:var(--paper)}
.caveat .mono{margin-bottom:8px}

/* ── built for Nepal ───────────────────────────────────────────────────── */
.nepal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--mist);border:1px solid var(--mist)}
.np{background:var(--paper);padding:28px;display:flex;flex-direction:column;gap:12px}
.np h3{font-size:21px;font-weight:700;letter-spacing:-.015em;line-height:1.25}
.np p{font-size:15px;line-height:1.6;color:var(--slate)}
.np strong{color:var(--ink);font-weight:700}
.np-honest{background:#fff;box-shadow:inset 3px 0 0 var(--ink)}

/* ── contact + footer ──────────────────────────────────────────────────── */
.contact{background:var(--ink);color:var(--paper)}
.cta{display:flex;justify-content:space-between;align-items:flex-end;gap:48px}
.cta>div:first-child{display:flex;flex-direction:column;gap:18px}
.cta-side{display:flex;flex-direction:column;align-items:flex-end;gap:12px;flex:none}
footer{background:var(--ink);color:var(--paper);border-top:1px solid rgba(246,245,241,.2);padding:clamp(48px,6vw,72px) 0 36px}
.foot{display:grid;grid-template-columns:1.5fr repeat(4,minmax(0,1fr));gap:32px}
.brand{display:flex;flex-direction:column;gap:16px}
/* A lockup only ever scales uniformly: a non-uniform scale is a redrawn logo, which
   BRAND.md §8 forbids. `.brand` is a COLUMN, so its cross axis is horizontal and the flex
   default `align-items:stretch` beats `width:auto` on a replaced element — the wordmark was
   being laid out at the column's full width (279 x 26, aspect 10.74 against the master's
   5.5084). Pin it to its own intrinsic width instead. Scoped to the image rather than set as
   `align-items` on `.brand` so a later sibling can still stretch, and kept off `.logo` and
   `.family-locks`, which are ROWS — there `align-self` would mean vertical alignment and
   would top-align lockups that are meant to sit centred. */
.brand img{align-self:flex-start}
.brand p{font-size:15px;color:var(--fog);max-width:34ch}
.col{display:flex;flex-direction:column;gap:11px}
.col a{font-size:15px;color:var(--paper)}
.col a:hover{text-decoration:underline;text-underline-offset:3px}
.family-strip{display:flex;align-items:center;gap:clamp(20px,3vw,48px);flex-wrap:wrap;margin-top:clamp(40px,5vw,64px);padding-top:28px;border-top:1px solid rgba(246,245,241,.2)}
.family-locks{display:flex;align-items:center;gap:clamp(18px,2.6vw,36px);flex-wrap:wrap}
.family-locks img{height:16px;width:auto;opacity:.75}
.bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;line-height:1.6;color:var(--fog);border-top:1px solid rgba(246,245,241,.2);padding-top:24px;margin-top:32px}

/* ── responsive ────────────────────────────────────────────────────────── */
@media(max-width:1100px){
  .feats,.nepal-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  /* Two columns: the wide cards and the second-to-last one take a full row, so
     the grid never ends on an empty cell — which reads as a missing feature. */
  .feat-wide,.feat-full,.feat:nth-last-child(2){grid-column:span 2}
  .rails{grid-template-columns:repeat(2,minmax(0,1fr))}
  .caps{grid-template-columns:1fr}
  .cap{border-right:0;border-bottom:1px solid rgba(246,245,241,.2);padding:26px 0}
  .cap+.cap{padding-left:0}
  .foot{grid-template-columns:repeat(2,minmax(0,1fr))}
  .legend{grid-template-columns:1fr;gap:18px}
  .legend>div{flex-direction:row;align-items:baseline;gap:14px}
  .legend dt{flex:none;min-width:96px}
}
@media(max-width:840px){
  .links{display:none}
  .menu-btn{display:inline-flex}
  .nav-cta .btn-line{display:none}
  .hero .wrap:not(.strip){grid-template-columns:1fr;gap:28px;padding-top:44px}
  .hero-mark{justify-content:flex-start;padding:0}
  .hero h1{max-width:none}
  .head{grid-template-columns:1fr}
  .walk{grid-template-columns:1fr;gap:40px}
  .feats,.nepal-grid{grid-template-columns:1fr}
  .feat-wide,.feat-full,.feat:nth-last-child(2){grid-column:span 1}
  .quote-pair{grid-template-columns:1fr}
  .cta{flex-direction:column;align-items:flex-start}
  .cta-side{align-items:stretch;width:100%}
  .cta-side .btn{width:100%}
  .strip{flex-direction:column;align-items:flex-start;gap:14px}
  .actions .btn{flex:1 1 auto}
}
@media(max-width:560px){
  .rails{grid-template-columns:1fr}
  .foot{grid-template-columns:1fr;gap:28px}
  .honesty,.caveat{padding:20px}
  .feat,.np{padding:22px}
}