/* ==========================================================================
   Stellacris -- public presentation site
   Built to the Accadema design manual: system fonts, slate/white/blue,
   2px sharp corners, flat hairline surfaces, blue accent used sparingly,
   seamless light footer (s24). Hero is an inset dark card with a video
   background montage. Positive, outcome-first copy.
   ========================================================================== */

/* ---- tokens (manual s34) ------------------------------------------------ */
:root{
  --primary:#0f172a;
  --accent:#2563eb;
  --text:#1e293b;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --bg:#ffffff;
  --bg-alt:#f8fafc;
  --success:#22c55e;
  --warning:#f59e0b;
  --danger:#ef4444;
  --hero-from:#0a0e1a;
  --hero-to:#1a1f35;
  --blue-glow:rgba(59,130,246,.15);
  --purple-glow:rgba(139,92,246,.12);
  --page-inset:clamp(1.25rem,3vw,4rem);
  --container:1200px;
  --font-sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-mono:Monaco,'Courier New',monospace;
  --nav-h:64px;
}

/* ---- reset + base ------------------------------------------------------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--font-sans);font-size:1rem;line-height:1.7;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4,h5,h6,p{overflow-wrap:break-word;word-break:normal}
h1,h2,h3,h4,h5,h6{color:var(--primary);font-weight:600;line-height:1.2;letter-spacing:-.01em}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
strong{font-weight:600;color:var(--primary)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---- layout -------------------------------------------------------------
   --container scales up in steps on large/4K displays so the page fills the
   screen proportionally instead of floating a fixed ~1200px column in a sea
   of white. Applies everywhere .wrap/.hero/.cta-card/.nav-in read it. ---- */
@media (min-width:1440px){:root{--container:1320px}}
@media (min-width:1680px){:root{--container:1480px}}
@media (min-width:1920px){:root{--container:1640px}}
@media (min-width:2560px){:root{--container:2000px;--page-inset:clamp(1.25rem,3vw,5rem)}}
@media (min-width:3200px){:root{--container:2400px;--page-inset:clamp(1.25rem,3vw,6rem)}}

.wrap{max-width:var(--container);margin:0 auto;padding-inline:var(--page-inset)}
.section{padding-block:6rem}
.section.alt{background:var(--bg-alt)}
.section.dark{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff}
.section.dark::before,.section.dark::after{content:"";position:absolute;pointer-events:none;border-radius:50%;
  z-index:0;animation:pulse 8s ease-in-out infinite}
.section.dark::before{background:radial-gradient(circle,var(--blue-glow),transparent 70%);width:680px;height:680px;top:-220px;right:-120px}
.section.dark::after{background:radial-gradient(circle,var(--purple-glow),transparent 70%);width:460px;height:460px;
  bottom:-160px;left:-100px;animation-duration:10s;animation-direction:reverse}
.section.dark > .wrap{position:relative;z-index:1}
.section.dark h2,.section.dark h3,.section.dark h4{color:#fff}
@media (max-width:768px){.section{padding-block:4rem}}
.sec-eyebrow{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--primary);background:var(--bg-alt);border:1px solid var(--border);border-radius:2px;
  padding:.4rem .7rem;margin-bottom:1.4rem}
.section.alt .sec-eyebrow{background:#fff}
.section.dark .sec-eyebrow{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18)}
.sec-head{max-width:44rem;margin-bottom:3rem}
.sec-head h2{font-size:clamp(2.2rem,4.6vw,3.6rem);font-weight:300;letter-spacing:-.01em;line-height:1.14}
.sec-head p{color:var(--text-muted);font-size:1.1rem;margin-top:1.1rem;max-width:min(52ch,100%)}
.h-display{font-size:clamp(2.2rem,4.6vw,3.6rem);font-weight:300;letter-spacing:-.01em;line-height:1.14}
/* optional bold emphasis span inside a light display heading */
.sec-head h2 b,.sec-head h2 strong,.h-display b,.h-display strong{font-weight:700;color:var(--primary)}
.section.dark .sec-head p{color:rgba(255,255,255,.72)}
.lead{color:var(--text-muted);font-size:1.05rem}

/* ---- buttons (manual s11) ---------------------------------------------- */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-family:inherit;font-size:.95rem;
  font-weight:600;line-height:1.2;padding:.75rem 2rem;border:1px solid transparent;border-radius:2px;
  cursor:pointer;transition:background .2s,color .2s,border-color .2s,transform .2s;white-space:nowrap;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-dark{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-dark:hover,.btn-dark:focus-visible{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline-dark{background:#fff;border-color:var(--border);color:var(--text)}
.btn-outline-dark:hover,.btn-outline-dark:focus-visible{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-light-brand{background:#fff;border-color:#fff;color:var(--primary)}
.btn-light-brand:hover,.btn-light-brand:focus-visible{background:transparent;border-color:#fff;color:#fff}
.btn-outline-light-brand{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline-light-brand:hover,.btn-outline-light-brand:focus-visible{background:#fff;border-color:#fff;color:var(--primary)}
.btn-sm{padding:.45rem 1rem;font-size:.88rem}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem}
.btn-row.loose{gap:1rem}
.tlink{font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:.4rem}
.tlink:hover{text-decoration:underline;text-underline-offset:3px}

/* ---- icon-simple + logo (manual s08, s03) ------------------------------ */
.icon-simple{width:44px;height:44px;flex:none;display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-size:1.1rem;border-radius:2px}
.logo-mark{display:inline-flex;align-items:baseline;font-weight:800;letter-spacing:-.5px;
  font-size:1.4rem;color:var(--primary)}
.logo-mark:hover{text-decoration:none;color:var(--primary)}
.logo-mark .lc{font-weight:400;letter-spacing:0}

/* ---- badges + chips (manual s12) --------------------------------------- */
.b-badge{display:inline-block;padding:.2rem .5rem;font-size:.72rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.05em;border-radius:2px}
.b-badge.dark{background:var(--primary);color:#fff}
.b-badge.muted{background:var(--bg-alt);color:var(--primary);border:1px solid var(--border)}
.b-badge.accent{background:rgba(59,130,246,.08);color:var(--accent)}
.b-badge.ok{background:rgba(34,197,94,.1);color:#15803d}
.chip{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem .7rem;background:var(--bg-alt);
  border:1px solid var(--border);border-radius:2px;font-size:.82rem;color:var(--text);font-weight:500}
.chip i{color:var(--text-muted)}
.section.dark .chip{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.14);color:rgba(255,255,255,.85)}
.section.dark .chip i{color:rgba(255,255,255,.6)}

/* ---- cards + lists (manual s13, s14) ----------------------------------- */
.card{background:var(--bg);border:1px solid var(--border);border-radius:2px;padding:1.75rem;
  height:100%;transition:border-color .2s}
.card:hover{border-color:var(--text-muted)}
.card h3{font-size:1.2rem;font-weight:600;margin-bottom:.35rem}
.card p{color:var(--text-muted);margin-top:.5rem}
.card-head{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}
.list-clean{list-style:none}
.list-clean li{padding:.6rem 0;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:.6rem}
.list-clean li:last-child{border-bottom:none}
.list-clean li i{color:var(--text-muted);min-width:1.1rem;text-align:center}
.grid{display:grid;gap:1.25rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.grid-3,.grid-2{grid-template-columns:1fr}}

/* ---- navbar: fixed, reserves its own space -- hero sits below it, not
   under it. Transparent + borderless at rest; frosted once scrolled. ---- */
body{padding-top:var(--nav-h)}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:transparent;
  border-bottom:1px solid transparent;min-height:var(--nav-h);
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease}
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom-color:var(--border);box-shadow:0 2px 10px rgba(0,0,0,.04)}
.nav-in{max-width:var(--container);margin-inline:auto;padding:.85rem var(--page-inset);position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:1rem}
.nav .logo-mark,.nav .logo-mark:hover{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:1.75rem;list-style:none}
.nav-links a{color:var(--text-muted);font-weight:500;font-size:.95rem}
.nav-links a:hover{color:var(--primary);text-decoration:none}
.nav-actions{display:flex;align-items:center;gap:.75rem}
.nav-links .nav-cta{display:none}
.nav .nav-cta{background:var(--primary);border:1px solid var(--primary);color:#fff}
.nav .nav-cta:hover{background:#fff;color:var(--primary)}
.nav-burger{display:none;width:42px;height:40px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--border);border-radius:2px;color:var(--primary);cursor:pointer}
@media (max-width:840px){
  .nav-links{position:absolute;top:100%;left:var(--page-inset);right:var(--page-inset);
    flex-direction:column;gap:.2rem;align-items:stretch;background:#fff;border:1px solid var(--border);
    border-radius:12px;box-shadow:0 24px 56px rgba(15,23,42,.2);padding:.6rem;display:none;z-index:1000;
    opacity:0;transform:translateY(-6px);transition:opacity .16s ease,transform .16s ease}
  .nav-links.open{display:flex;opacity:1;transform:translateY(0)}
  .nav-links li{display:block}
  .nav-links a{display:block;color:var(--text);font-weight:500;font-size:1.02rem;
    padding:1.05rem 1.1rem;border-radius:8px;line-height:1.3;transition:background .15s ease}
  .nav-links a:hover{background:var(--bg-alt);text-decoration:none}
  .nav-links .nav-cta{display:block;background:var(--primary)!important;
    color:#fff!important;border:0;border-radius:8px;font-weight:600;padding:1.05rem;
    margin:.5rem .1rem .1rem;text-align:center}
  .nav-links .nav-cta:hover{background:var(--primary)!important;opacity:.9}
  .nav-actions .nav-cta{display:none}
  .nav-burger{display:inline-flex}
}
@media (prefers-reduced-motion:reduce){.nav-links{transition:none}}

/* ---- hero: inset dark card (video on index, gradient on subpages) ------ */
.hero-shell{padding:0 var(--page-inset) var(--page-inset);background:var(--bg)}
.hero{position:relative;width:100%;border-radius:28px;overflow:hidden;
  background:linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff;isolation:isolate}
.hero-media{position:absolute;inset:0;z-index:0;overflow:hidden;background:var(--hero-from)}
.hero-vid{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s ease}
.hero-vid.is-active{opacity:1}
.hero-scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(135deg,rgba(9,12,22,.86),rgba(20,26,46,.80))}
.hero .glow{position:absolute;border-radius:50%;pointer-events:none;filter:blur(2px);z-index:1}
.hero .glow1{width:520px;height:520px;top:-160px;right:-120px;
  background:radial-gradient(circle,var(--blue-glow),transparent 70%);animation:pulse 8s ease-in-out infinite}
.hero .glow2{width:420px;height:420px;bottom:-140px;left:-100px;
  background:radial-gradient(circle,var(--purple-glow),transparent 70%);animation:pulse 10s ease-in-out infinite 2s}
@keyframes pulse{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:.85;transform:scale(1.1)}}
.hero-inner{position:relative;z-index:2;max-width:var(--container);margin-inline:auto;
  padding:clamp(3.5rem,7vw,6rem) var(--page-inset);text-align:center}
.hero.sub .hero-inner{padding-block:clamp(2.75rem,5vw,4.25rem)}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .85rem;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:2px;
  font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#fff;margin-bottom:1.6rem}
.hero-badge i{color:#93c5fd}
.hero h1{color:#fff;font-size:clamp(2rem,5vw,3.5rem);font-weight:700;letter-spacing:-.02em;
  line-height:1.15;max-width:min(20ch,100%);margin-inline:auto}
.hero-sub{color:rgba(255,255,255,.8);font-size:1.12rem;max-width:min(60ch,100%);margin:1.25rem auto 2rem}
.hero .btn-row{justify-content:center}

/* ---- logo ribbon: grayscale marquee of identifiers/funders/standards ---
   ORCID and ROR brand guidelines explicitly permit a black/white rendering
   ("high-contrast black and white ... when required" / "black or white
   acceptable when necessary") -- grayscale here is a sanctioned variant,
   not an unauthorized recolor. */
.ribbon-wrap{padding:2.75rem 0 3.25rem;text-align:center}
.ribbon-wrap .lbl{display:block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-muted);margin-bottom:1.75rem}
.ribbon{overflow:hidden;background:var(--bg-alt);border-block:1px solid var(--border);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.ribbon-track{display:flex;align-items:center;width:max-content;animation:ribbon-scroll 90s linear infinite}
.ribbon:hover .ribbon-track{animation-play-state:paused}
.ribbon-set{display:flex;align-items:center;flex:none}
.ribbon-item{display:inline-flex;align-items:center;gap:.85rem;padding:1.5rem 3.25rem;white-space:nowrap}
.ribbon-item a{display:inline-flex;align-items:center;gap:.85rem}
.ribbon-item img{height:40px;width:auto;display:block;filter:grayscale(1);opacity:.65;transition:opacity .2s}
.ribbon-item.eu img{height:32px}
.ribbon-item a:hover img{opacity:1}
.ribbon-item .word{font-weight:600;font-size:1.05rem;color:var(--text-muted)}
.ribbon-item .word-badge{font-weight:800;letter-spacing:-.01em;font-size:1.25rem;color:var(--text-muted);opacity:.7}
@keyframes ribbon-scroll{from{transform:translateX(0)}to{transform:translateX(calc(-100% / 3))}}
@media (prefers-reduced-motion:reduce){.ribbon-track{animation:none}}

/* ---- approach + readiness card ----------------------------------------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
@media (max-width:840px){.split{grid-template-columns:1fr;gap:2rem}}
.prov-card{background:#fff;border:1px solid var(--border);border-radius:2px;overflow:hidden}
.prov-card .head{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.9rem 1.25rem;background:var(--bg-alt);border-bottom:1px solid var(--border)}
.prov-card .head .t{font-weight:600;color:var(--primary);font-size:.95rem}

/* ---- outcomes (what Stellacris solves) --------------------------------- */
.outcomes{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.outcome{border:1px solid rgba(255,255,255,.12);border-radius:2px;padding:1.75rem}
.outcome i{color:#93c5fd;font-size:1.15rem}
.outcome h3{color:#fff;font-size:1.15rem;font-weight:600;margin:.75rem 0 .4rem}
.outcome p{color:rgba(255,255,255,.72)}
@media (max-width:620px){.outcomes{grid-template-columns:1fr}}

/* ---- positioning -------------------------------------------------------- */
.rivals{margin-top:2.5rem;padding-top:1.75rem;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1rem}
.rivals .lbl{font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted)}

/* ---- data foundation rows ---------------------------------------------- */
.data-row{display:flex;justify-content:space-between;gap:1rem;align-items:center;
  padding:.85rem 0;border-bottom:1px solid var(--border)}
.data-row:last-child{border-bottom:none}
.data-row .k{font-weight:600;color:var(--primary)}
.data-row .v{color:var(--text-muted);text-align:right}

/* ---- cta: inset dark card (matches the hero) --------------------------- */
.cta-shell{padding:var(--page-inset);background:var(--bg)}
.cta-card{max-width:var(--container);margin:0 auto;border-radius:28px;overflow:hidden;text-align:center;
  background:linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff;
  padding:clamp(3.25rem,6vw,5.5rem) clamp(1.5rem,5vw,4rem)}
.cta-card h2{font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:700;color:#fff;max-width:min(22ch,100%);margin:0 auto;letter-spacing:-.02em;line-height:1.14}
.cta-card p{color:rgba(255,255,255,.75);max-width:min(52ch,100%);margin:1rem auto 2rem}
.cta-card .btn-row{justify-content:center}
.cta-card .sec-eyebrow{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18)}

/* ---- footer (seamless light, manual s24) ------------------------------- */
.footer{background:var(--bg);color:var(--text)}
.footer-top{max-width:var(--container);margin:0 auto;padding:5rem var(--page-inset) 0}
.footer-word{font-weight:800;font-size:clamp(2rem,4vw,2.6rem);color:var(--primary);letter-spacing:-.5px;line-height:1;display:inline-block}
.footer-word:hover{text-decoration:none;color:var(--primary)}
.footer-word .lc{font-weight:400;letter-spacing:0}
.footer-status{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;margin-top:1rem;font-size:.92rem;color:var(--text-muted)}
.footer-status .dot{width:8px;height:8px;border-radius:999px;background:var(--success);display:inline-block}
.footer-status a{color:var(--text)}
.footer-desc{max-width:min(62ch,100%);margin:1.1rem 0 0;color:var(--text)}
.footer-gdpr{display:flex;align-items:center;flex-wrap:wrap;gap:.45rem;font-size:.92rem;margin-top:1.5rem;color:var(--text)}
.footer-gdpr i{color:var(--primary)}
.footer-cols{max-width:var(--container);margin:0 auto;padding:3rem var(--page-inset) 0;
  display:grid;grid-template-columns:repeat(5,1fr);gap:2rem}
.footer-cols h4{font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  color:var(--text-muted);margin-bottom:1rem}
.footer-cols a{display:block;color:var(--text);font-size:.95rem;padding:.35rem 0}
.footer-cols a:hover{color:var(--accent);text-decoration:none}
.footer-legal{max-width:var(--container);margin:0 auto;padding:2.5rem var(--page-inset) 3rem;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 1.5rem;color:var(--text-muted);font-size:.88rem}
.footer-legal .links a{color:var(--text-muted);margin-left:1.25rem}
.footer-legal .links a:first-child{margin-left:0}
@media (max-width:900px){.footer-cols{grid-template-columns:repeat(3,1fr);row-gap:2rem}}
@media (max-width:560px){.footer-cols{grid-template-columns:repeat(2,1fr)}}

/* ---- language switcher (nav) ------------------------------------------- */
.langsw{position:relative}
.langsw>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:.4rem;
  font-size:.9rem;font-weight:600;color:var(--text);padding:.5rem .7rem;border:1px solid var(--border);
  border-radius:6px;background:#fff;user-select:none}
.langsw>summary::-webkit-details-marker{display:none}
.langsw>summary i{color:var(--text-muted)}
.langsw>summary:hover{border-color:var(--text-muted)}
.langsw-menu{position:absolute;top:calc(100% + .5rem);right:0;min-width:190px;list-style:none;margin:0;padding:.4rem;
  background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:0 20px 48px rgba(15,23,42,.16);z-index:1000}
.langsw-menu a{display:block;padding:.6rem .75rem;border-radius:7px;color:var(--text);font-size:.95rem;font-weight:500}
.langsw-menu a:hover{background:var(--bg-alt);text-decoration:none}
.langsw-menu a[aria-current="true"]{color:var(--accent);font-weight:700}
@media (max-width:840px){.langsw{display:none}}

/* ---- accessibility (WCAG) toggle ---------------------------------------- */
.a11y-toggle{cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;font-size:1rem;color:var(--text-muted);
  border:1px solid var(--border);border-radius:6px;background:#fff}
.a11y-toggle:hover{border-color:var(--text-muted);color:var(--text)}
.a11y-toggle[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.a11y-toggle:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* WCAG enhance mode: stronger contrast, underlined content links, clear focus */
:root.a11y{--text:#0b1220;--text-muted:#334155;--border:#94a3b8;--accent:#1d4ed8}
:root.a11y a:not(.btn):not(.logo-mark):not(.nav-cta):not(.tlink):not(.footer-word){text-decoration:underline;text-underline-offset:2px}
:root.a11y a:focus-visible,:root.a11y button:focus-visible,:root.a11y input:focus-visible,:root.a11y textarea:focus-visible,:root.a11y summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
/* WCAG 2.2.2 Pause/Stop/Hide: the accessibility toggle also freezes continuous motion */
:root.a11y .ribbon-track,:root.a11y .glow,:root.a11y .hero-media{animation:none!important}

/* ---- platform foundation: spec sheet ----------------------------------- */
.foundation-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2.5rem;align-items:start}
.spec-card{border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#fff}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;
  padding:1rem 1.4rem;border-bottom:1px solid var(--border)}
.spec-row:last-child{border-bottom:none}
.spec-row:nth-child(odd){background:var(--bg-alt)}
.spec-k{font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted);white-space:nowrap}
.spec-v{font-weight:600;color:var(--primary);text-align:right}
.spec-notes{align-self:center}
.spec-notes li{align-items:flex-start;padding:.85rem 0}
.spec-notes li i{margin-top:.28rem;color:var(--accent)}
@media (max-width:840px){.foundation-grid{grid-template-columns:1fr;gap:2rem}}

/* ---- topic / prose / legal pages --------------------------------------- */
.topic-hero{padding-block:clamp(4rem,7vw,6.5rem) 3rem}
.topic-lead{max-width:min(60ch,100%);margin-top:1.1rem}
.legal-hero{padding-bottom:2rem}
.legal-updated{font-size:.85rem;color:var(--text-muted);margin-top:.6rem}
.prose{max-width:min(72ch,100%)}
.prose p{color:var(--text);margin-bottom:1.1rem;line-height:1.75}
.legal-body h2{font-size:1.3rem;font-weight:600;margin:2rem 0 .6rem}
.legal-body h2:first-child{margin-top:0}
.legal-note{margin-top:2rem;padding:1rem 1.25rem;background:var(--bg-alt);border:1px solid var(--border);
  border-radius:8px;font-size:.9rem;color:var(--text-muted)}

/* ---- feature split + list (topic pages) -------------------------------- */
.feature-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:3rem;align-items:start}
.feature-list li{align-items:flex-start;padding:.85rem 0}
.feature-list li i{margin-top:.28rem;color:var(--accent);min-width:1.2rem}
@media (max-width:840px){.feature-split{grid-template-columns:1fr;gap:1.75rem}}

/* ---- FAQ accordion ----------------------------------------------------- */
.faq{max-width:820px}
.faq-item{border:1px solid var(--border);border-radius:8px;background:#fff;margin-bottom:.85rem;overflow:hidden}
.faq-item>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding:1.15rem 1.4rem;font-weight:600;color:var(--primary);font-size:1.02rem}
.faq-item>summary::-webkit-details-marker{display:none}
.faq-item>summary i{color:var(--text-muted);transition:transform .2s ease;font-size:.85rem}
.faq-item[open]>summary i{transform:rotate(180deg)}
.faq-item[open]>summary{border-bottom:1px solid var(--border)}
.faq-a{padding:1.1rem 1.4rem}
.faq-a p{color:var(--text-muted);line-height:1.7;margin:0}

/* ---- contact form ------------------------------------------------------ */
.contact-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:2.5rem;align-items:start}
.contact-form{display:grid;gap:1.25rem;max-width:640px}
.field{display:grid;gap:.4rem}
.field label{font-weight:600;color:var(--primary);font-size:.95rem}
.field .req{color:var(--danger)}
.field input,.field textarea,.contact-form input,.contact-form textarea{
  width:100%;font:inherit;color:var(--text);background:#fff;border:1px solid var(--border);
  border-radius:8px;padding:.8rem .9rem;transition:border-color .15s ease,box-shadow .15s ease}
.field textarea{resize:vertical;min-height:130px}
.field input:focus,.field textarea:focus{border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(37,99,235,.28)}
.field.has-error input,.field.has-error textarea,.field-check.has-error{border-color:var(--danger)}
.field-err{color:var(--danger);font-size:.85rem}
.field-check{display:grid;gap:.4rem}
.field-check label{display:flex;align-items:flex-start;gap:.6rem;font-size:.92rem;color:var(--text);line-height:1.5;cursor:pointer}
.field-check input{margin-top:.2rem;width:18px;height:18px;flex:none;accent-color:var(--primary)}
.contact-form .btn{justify-self:start;margin-top:.25rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-note{display:flex;gap:.75rem;align-items:flex-start;padding:1.1rem 1.25rem;border-radius:8px;margin-bottom:1.25rem}
.form-note.ok{background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.35);color:#15803d}
.form-note.ok strong{color:#15803d}
.form-note.ok p{margin:.25rem 0 0;color:var(--text)}
.form-note.error{background:rgba(239,68,68,.07);border:1px solid rgba(239,68,68,.35);color:#b91c1c}
.form-note i{font-size:1.15rem;margin-top:.1rem}
.contact-aside .card h3{font-size:1.15rem}
@media (max-width:840px){.contact-grid{grid-template-columns:1fr;gap:2rem}}

/* ---- reveal + a11y (manual s09, s30) ----------------------------------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
.skip{position:absolute;left:-999px;top:0;background:var(--primary);color:#fff;padding:.6rem 1rem;z-index:200}
.skip:focus{left:.5rem;top:.5rem;color:#fff}
:where(a,button,input,summary):focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.section.dark :focus-visible,.hero :focus-visible,.cta-card :focus-visible{outline-color:#fff}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .btn{transition:none}
  *{animation:none!important}
}