/* ============================================================================
   ALVEA design system — one source of truth for the marketing site.
   Warm clinical paper + deep-ink instrument. Space Grotesk / Hanken / Space Mono.
   Medical teal + brass gold. Machined key buttons.
   Load the fonts + this file, then add only page-specific styles per page.
   Fonts: https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Hanken+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap
   ========================================================================== */
:root{
  --paper:#F6F4EF; --paper2:#FCFBF8; --ink:#14181F; --ink2:#1B2027;
  --slate:#5A6672; --mut:#646E7A;
  --teal:#0E9B8C; --teal-d:#0B7A6E; --gold:#B8913F; --gold-l:#D9B968;
  --line:rgba(20,24,31,.10); --line2:rgba(20,24,31,.18);
  --disp:'Space Grotesk',system-ui,sans-serif;
  --body:'Hanken Grotesk',system-ui,sans-serif;
  --mono:'Space Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
h1,h2,h3{text-wrap:balance}
p,.lead,.sub{text-wrap:pretty}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--paper);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1440px;margin:0 auto;padding:0 32px}
.eyebrow{font-family:var(--mono);font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;color:var(--teal-d);display:inline-flex;align-items:center;gap:.7rem}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--teal)}

/* ---- machined key buttons ---- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--body);font-weight:600;font-size:.95rem;padding:.85rem 1.6rem;border-radius:12px;border:0;cursor:pointer;overflow:hidden;transition:transform .13s cubic-bezier(.2,.8,.3,1),box-shadow .2s;white-space:nowrap}
.btn::after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;background:linear-gradient(105deg,transparent 34%,rgba(255,255,255,.5) 49%,transparent 62%);transform:translateX(-130%);transition:transform .6s cubic-bezier(.3,.7,.3,1)}
.btn:hover::after{transform:translateX(130%)}
.btn:active{transform:translateY(1px)}
.btn-gold{color:#231a06;background:linear-gradient(180deg,#E9CE86,#C69A3F 46%,#A97F2E);box-shadow:inset 0 1px 0 rgba(255,255,255,.55),inset 0 -1.5px 0 rgba(0,0,0,.22),0 8px 18px -8px rgba(184,145,63,.6)}
.btn-gold:hover{transform:translateY(-1.5px);box-shadow:inset 0 1px 0 rgba(255,255,255,.6),inset 0 -1.5px 0 rgba(0,0,0,.22),0 14px 30px -9px rgba(184,145,63,.7)}
.btn-ink{color:#fff;background:linear-gradient(180deg,#232A33,#14181F);box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 8px 18px -9px rgba(20,24,31,.6)}
.btn-ink:hover{transform:translateY(-1.5px)}
.btn-ghost{color:var(--ink);background:var(--paper2);box-shadow:inset 0 0 0 1px var(--line2),0 6px 14px -9px rgba(20,24,31,.4)}
.btn-ghost:hover{transform:translateY(-1.5px);box-shadow:inset 0 0 0 1px var(--line2),0 12px 24px -10px rgba(20,24,31,.45)}

/* ---- nav ---- */
nav.alv{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
nav.alv .wrap{padding:0 32px;display:flex;align-items:center;justify-content:space-between;height:66px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand .mark{width:23px;height:23px;display:block}
.brand b{font-family:var(--disp);font-weight:700;letter-spacing:.14em;font-size:1.05rem}
.brand .tag{font-family:var(--mono);font-size:.58rem;letter-spacing:.18em;text-transform:uppercase;color:var(--mut);border-left:1px solid var(--line2);padding-left:11px;line-height:1.25;max-width:8ch}
.navlinks{display:flex;gap:30px;margin-left:auto}
.navlinks a{font-family:var(--mono);font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--slate);transition:.2s;white-space:nowrap}
.navlinks a:hover{color:var(--ink)}
.navlinks a.here{color:var(--ink)}
.nav-cta{padding:.6rem 1.15rem;font-size:.85rem}
/* mobile menu toggle (JS-free, checkbox-driven) */
.navt-cb{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}
.navt-cb:focus-visible ~ .navtoggle{outline:2px solid var(--teal);outline-offset:3px;border-radius:6px}
/* keyboard focus ring, brand-consistent */
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
/* respect reduced-motion */
@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}
@media (max-width:600px){.wrap{padding:0 20px}}
/* scroll reveal — the hidden state ONLY applies under html.js-reveal, which reveal.js
   adds only when JS runs and motion is allowed, so content never hides otherwise */
html.js-reveal .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
html.js-reveal .reveal.in{opacity:1;transform:none}
.navtoggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer;margin-left:auto}
.navtoggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .2s}
.navt-cb:checked ~ .navtoggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navt-cb:checked ~ .navtoggle span:nth-child(2){opacity:0}
.navt-cb:checked ~ .navtoggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---- type + sections ---- */
h1{font-family:var(--disp);font-weight:600;font-size:clamp(2.6rem,5vw,4.1rem);line-height:1.02;letter-spacing:-.03em;margin:1.3rem 0 0}
h1 em{font-style:normal;color:var(--teal-d)}
.lead{margin-top:1.5rem;font-size:1.18rem;color:var(--slate);max-width:42ch}
.cta{margin-top:2.1rem;display:flex;gap:.8rem;flex-wrap:wrap}
.microtrust{margin-top:1.5rem;font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
section.alv{padding:76px 0;border-bottom:1px solid var(--line)}
h2{font-family:var(--disp);font-weight:600;font-size:clamp(1.9rem,3.4vw,2.6rem);letter-spacing:-.02em;line-height:1.08;max-width:22ch}
.sub{color:var(--slate);margin-top:1rem;max-width:56ch;font-size:1.05rem}

/* ---- scan panel (dark instrument) ---- */
.scanpanel{position:relative;border-radius:18px;background:#0B0F15;padding:7px;box-shadow:0 44px 84px -36px rgba(20,24,31,.55),inset 0 1px 0 rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09)}
.scanviz{position:relative;border-radius:12px;overflow:hidden;background:#0b0f14;aspect-ratio:5/4}
.scanviz video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.scancap{position:absolute;left:0;right:0;bottom:0;padding:26px 15px 12px;display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(230,238,248,.85);background:linear-gradient(180deg,transparent,rgba(5,8,12,.7))}
.scancap .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 var(--teal);animation:pulse 2.6s ease-out infinite;flex:none}
.scancap b{color:var(--mut);font-weight:400}
.scancap .acc{margin-left:auto;color:var(--gold-l)}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(14,155,140,.5)}70%{box-shadow:0 0 0 6px rgba(14,155,140,0)}100%{box-shadow:0 0 0 0 rgba(14,155,140,0)}}

/* ---- cards / tiers ---- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.tier{display:block;background:var(--paper2);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 10px 30px -22px rgba(20,24,31,.4);transition:transform .16s,box-shadow .2s}
.tier:hover{transform:translateY(-3px);box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 18px 40px -22px rgba(20,24,31,.5)}
.tier .n{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-d)}
.tier h3{font-family:var(--disp);font-weight:600;font-size:1.25rem;margin:.7rem 0 .5rem}
.tier p{color:var(--slate);font-size:.95rem}
.tier.lead-tier{background:linear-gradient(180deg,#fff,#F1EEE6);border-color:rgba(184,145,63,.35)}
.tier.lead-tier .n{color:var(--gold)}

.vals{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:14px}
.val h3{font-family:var(--disp);font-weight:600;font-size:1.15rem;margin-bottom:.5rem}
.val p{color:var(--slate);font-size:.98rem}
.val .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-d);display:block;margin-bottom:.7rem}

/* ---- dark CTA band ---- */
.band{background:linear-gradient(180deg,#161B22,#0E1218);border-radius:22px;padding:64px 40px;text-align:center;box-shadow:0 40px 90px -40px rgba(20,24,31,.6),inset 0 1px 0 rgba(255,255,255,.06)}
.band h2{color:#fff;margin:0 auto;max-width:20ch}
.band p{color:rgba(214,224,238,.7);margin:1rem auto 0;max-width:48ch}
.band .cta{justify-content:center;margin-top:2rem}

/* ---- footer ---- */
footer.alv{padding:52px 0;color:var(--mut);font-family:var(--mono);font-size:.72rem;letter-spacing:.05em}
footer.alv .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
footer.alv a{color:var(--slate)}
footer.alv a:hover{color:var(--ink)}
.flinks{display:flex;gap:22px;flex-wrap:wrap}

@media(max-width:900px){
  nav.alv .wrap{flex-wrap:wrap;row-gap:0;height:auto;min-height:66px;padding-bottom:0}
  .navt-cb:checked ~ .navlinks{padding-bottom:8px}
  .brand .tag{display:none}
  .navtoggle{display:flex;order:2}
  .brand{order:1}
  .nav-cta{order:3}
  .navlinks{order:4;flex-basis:100%;display:none;flex-direction:column;gap:0;margin:6px 0 2px}
  .navt-cb:checked ~ .navlinks{display:flex}
  .navlinks a{padding:12px 4px;border-top:1px solid var(--line);font-size:.8rem}
  .tiers,.vals{grid-template-columns:1fr}
  .vals{gap:28px}
}