/* ==========================================================================
   Rigel — "Star Atlas" design system
   Dark celestial star-chart. One shared stylesheet for every page.
   Tokens → base → shell (header/footer) → components → utilities → responsive.
   ========================================================================== */

:root{
  /* color — LIGHT is the default; dark "Star Atlas" is opt-in via [data-theme="dark"] */
  --void:#f6f7fb; --void-2:#ffffff; --panel:#ffffff; --panel-2:#ffffff;
  --ink:#141230; --ink-2:#4b4a68; --ink-3:#8a89a6;
  --violet:#5b3df0; --violet-2:#4a2fd0; --violet-soft:rgba(91,61,240,0.1);
  --star:#f5a300; --star-2:#c77700; --star-soft:rgba(245,163,0,0.14);
  --on:#0f9d6b; --on-soft:rgba(15,157,107,0.1); --off:#dc2626; --off-soft:rgba(220,38,38,0.08);
  --hair:rgba(20,18,48,0.09); --hair-2:rgba(20,18,48,0.16);
  /* type */
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:"Fraunces","Georgia",serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  /* layout */
  --frame:1180px; --gutter:24px;
  color-scheme:light;
}
/* Dark "Star Atlas" theme — opt-in; restores the original deep-navy night-sky values */
:root[data-theme="dark"]{
  --void:#070A16; --void-2:#0B1024; --panel:rgba(18,23,48,.55); --panel-2:rgba(18,23,48,.8);
  --ink:#EAECF7; --ink-2:#A6ACC9; --ink-3:#6E749A;
  --violet:#8B74FF; --violet-2:#5B3DF0; --violet-soft:rgba(139,116,255,.14);
  --star:#FFC857; --star-2:#F5A300; --star-soft:rgba(255,200,87,.16);
  --on:#53D9A8; --on-soft:rgba(83,217,168,.12); --off:#FF8A8A; --off-soft:rgba(255,138,138,.1);
  --hair:rgba(255,255,255,.09); --hair-2:rgba(255,255,255,.16);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:radial-gradient(1200px 700px at 72% -5%,#ece9ff 0%,var(--void) 55%),var(--void);
  color:var(--ink);font:400 16.5px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
:root[data-theme="dark"] body{background:radial-gradient(1200px 700px at 72% -5%,#141A3A 0%,var(--void) 55%),var(--void)}
a{color:inherit}
img{max-width:100%}
[hidden]{display:none!important}
::selection{background:var(--star-soft);color:#fff}
h1,h2,h3,h4{text-wrap:balance;margin:0}
:focus-visible{outline:2px solid var(--star);outline-offset:3px;border-radius:3px}

/* starfield canvas (pages drop <canvas id="sky"></canvas> as first element) */
#sky{position:fixed;inset:0;z-index:0;pointer-events:none}
main,.mast,.site-foot{position:relative;z-index:1}

.frame{max-width:var(--frame);margin:0 auto;padding-inline:var(--gutter)}

/* ---------- header ---------- */
.mast{position:sticky;top:env(safe-area-inset-top,0px);z-index:40;
  background:rgba(7,10,22,.72);backdrop-filter:blur(12px);border-bottom:1px solid var(--hair)}
.mast .frame{display:flex;align-items:center;gap:18px;min-height:66px}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto}
.logo svg{filter:drop-shadow(0 0 10px var(--star-soft))}
.wm{font:700 22px/1 var(--mono);letter-spacing:-.02em;color:var(--ink)}
.wm .cur{display:inline-block;width:.5em;height:1.05em;background:var(--star);
  margin-left:3px;vertical-align:-.14em;box-shadow:0 0 10px var(--star-soft);
  animation:wm-cursor-blink 1.1s steps(1) infinite}
@keyframes wm-cursor-blink{0%,50%{opacity:1}50.01%,100%{opacity:0}}
@media(prefers-reduced-motion:reduce){.wm .cur{animation:none}}
nav[aria-label="Primary"]{display:flex;align-items:center;flex-wrap:nowrap;gap:17px;margin-left:8px;
  font:500 13px var(--mono);letter-spacing:.01em;color:var(--ink-2);white-space:nowrap}
nav[aria-label="Primary"] a{text-decoration:none}
nav[aria-label="Primary"] a:hover{color:var(--ink)}
nav[aria-label="Primary"] a[aria-current="page"]{color:var(--star)}
.nav-dd{position:relative}
.nav-dd>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:5px}
.nav-dd>summary::-webkit-details-marker{display:none}
.nav-dd>summary::after{content:"▾";font-size:9px;color:var(--ink-3)}
.nav-dd-panel{position:absolute;top:calc(100% + 12px);left:-14px;min-width:220px;padding:10px;
  background:var(--panel-2);border:1px solid var(--hair-2);border-radius:14px;backdrop-filter:blur(14px);
  display:grid;gap:2px;box-shadow:0 24px 60px -30px #000}
.nav-dd-panel a{padding:9px 12px;border-radius:9px;color:var(--ink-2)}
.nav-dd-panel a:hover{background:var(--violet-soft);color:var(--ink)}
.nav-dd-panel p{margin:10px 12px 4px;font:500 10px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.right{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.menu{position:relative;display:none}
.menu>summary{list-style:none;cursor:pointer;font:500 13px var(--mono);color:var(--ink-2)}
.menu>summary::-webkit-details-marker{display:none}
.menu-panel{position:absolute;top:calc(100% + 12px);right:0;width:min(86vw,320px);padding:16px;
  background:var(--panel-2);border:1px solid var(--hair-2);border-radius:14px;backdrop-filter:blur(14px);
  display:grid;gap:14px;box-shadow:0 24px 60px -30px #000}
.menu-panel p{margin:0 0 6px;font:500 10px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.menu-panel a{display:block;padding:5px 0;color:var(--ink-2);text-decoration:none}
.menu-panel a:hover{color:var(--ink)}
.icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:999px;cursor:pointer;
  background:transparent;border:1px solid var(--hair-2);color:var(--ink-2)}
.icon-btn:hover{color:var(--ink);border-color:var(--ink-3)}
#theme{display:grid}/* light/dark toggle — visible in both themes (inherits .icon-btn) */

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;
  border-radius:999px;font:600 14px/1 var(--sans);text-decoration:none;white-space:nowrap;cursor:pointer;
  border:1px solid var(--hair-2);color:var(--ink);background:transparent;transition:border-color .15s,background .15s,color .15s}
.btn:hover{border-color:var(--ink-2)}
.btn.gold,.btn.key{background:linear-gradient(180deg,var(--star),var(--star-2));color:#2A1D00;border-color:transparent;
  box-shadow:0 8px 30px -8px var(--star-soft)}
.btn.gold:hover,.btn.key:hover{filter:brightness(1.05)}
.btn.btn-demo{border-color:var(--hair-2)}
.lbl-s{display:none}
@media(max-width:1080px){
  nav[aria-label="Primary"]{display:none}
  .menu{display:block}
}
@media(max-width:560px){
  .btn-demo{display:none}
  .lbl-l{display:none}.lbl-s{display:inline}
}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;padding-block:60px 46px}
.hero-full{display:block;text-align:center;padding-block:66px 40px}
@media(max-width:900px){.hero{grid-template-columns:1fr;gap:28px;padding-block:36px 22px}}
.eyebrow{font:500 11.5px/1.4 var(--mono);letter-spacing:.22em;text-transform:uppercase;color:var(--star-2);margin:0 0 20px}
h1{font:340 clamp(42px,6vw,76px)/1.02 var(--display);letter-spacing:-.02em;margin:0;font-optical-sizing:auto;color:var(--ink)}
h1 em,.serif-em{font-style:italic;color:var(--star)}
.lede{color:var(--ink-2);font-size:18px;max-width:38ch;margin:22px 0 28px}
.hero-full .lede{margin-inline:auto;max-width:58ch}
.cta-row{display:flex;gap:10px;flex-wrap:wrap}
.hero-full .cta-row{justify-content:center}
.works{margin-top:26px;font:400 13px/1.7 var(--mono);color:var(--ink-3)}
.works b{color:var(--ink-2);font-weight:500}

/* ---------- star scope illustration ---------- */
.scope{position:relative;aspect-ratio:1/1;max-width:420px;margin:0 auto;width:100%}
.scope svg{width:100%;height:100%;overflow:visible}
.ring{fill:none;stroke:var(--hair);stroke-width:1}
.ring.d{stroke-dasharray:2 7;stroke:var(--hair-2)}
.cline{stroke:var(--violet);stroke-width:1.6;fill:none;opacity:.85}
.course{stroke:var(--star);stroke-width:1.6;fill:none;stroke-dasharray:4 5;opacity:.9;animation:dash 6s linear infinite}
.node{fill:#D9D0FF}
.cap{font:500 10px var(--mono);letter-spacing:.1em;text-transform:uppercase;fill:var(--ink-3)}
.big-star{fill:var(--star);filter:drop-shadow(0 0 16px var(--star))}
@keyframes twinkle{0%,100%{opacity:.5}50%{opacity:1}}
@keyframes dash{to{stroke-dashoffset:-90}}
.tw{animation:twinkle 3.5s ease-in-out infinite}
@media(prefers-reduced-motion:reduce){.tw,.course{animation:none}}

/* ---------- section scaffolding ---------- */
.sec{padding-block:64px 8px;border-top:1px solid var(--hair);margin-top:48px}
.sec:first-of-type{border-top:0;margin-top:0}
.kal{font:500 12px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--violet);margin:0 0 10px}
.sec h2,.h2{font:360 clamp(28px,3.6vw,44px)/1.08 var(--display);letter-spacing:-.015em;margin:0 0 8px;color:var(--ink)}
.sec .intro,.intro{color:var(--ink-2);max-width:62ch;margin:0 0 30px;font-size:17px}
.center{text-align:center}
.center .intro{margin-inline:auto}

/* ---------- cards / pillars ---------- */
.grid{display:grid;gap:18px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.g-3,.g-4{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--hair);border-radius:16px;padding:26px 24px;
  backdrop-filter:blur(6px);min-width:0}
.card.hover{transition:transform .15s,border-color .15s}
.card.hover:hover{transform:translateY(-3px);border-color:var(--hair-2)}
.card .ic{width:30px;height:30px;color:var(--star);margin-bottom:16px}
.card h3{font:600 17px/1.3 var(--sans);margin:0 0 8px;letter-spacing:-.01em;color:var(--ink)}
.card .k{display:block;font:500 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--violet);margin-bottom:6px}
.card p{margin:0;color:var(--ink-2);font-size:14.5px}

/* ---------- numbered steps ---------- */
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:760px){.steps{grid-template-columns:1fr}}
.step{display:flex;gap:16px;padding:20px;border:1px solid var(--hair);border-radius:14px;background:var(--panel);min-width:0}
.step .n{flex:0 0 auto;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--star);color:var(--star);font:500 13px var(--mono)}
.step b{font:600 16px var(--sans);display:block;margin-bottom:4px;color:var(--ink)}
.step p{margin:0;color:var(--ink-2);font-size:14px}
.step .k{font:500 10.5px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--violet);display:block;margin-bottom:6px}

/* ---------- before / after compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:760px){.compare{grid-template-columns:1fr}}
.cc{border:1px solid var(--hair);border-radius:16px;padding:22px;background:var(--panel);min-width:0}
.cc.bad{border-color:rgba(255,138,138,.28)}
.cc.good{border-color:rgba(83,217,168,.3)}
.cc .h{display:flex;align-items:center;gap:9px;font:600 12px var(--mono);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.cc.bad .h{color:var(--off)}.cc.good .h{color:var(--on)}
.cc .h .d{width:8px;height:8px;border-radius:50%;background:currentColor}
.cc b{font:600 16px var(--sans);color:var(--ink)}
.cc p{color:var(--ink-2);font-size:14.5px;margin:8px 0 16px}
.row{display:flex;align-items:center;gap:10px;font:400 13px var(--mono);color:var(--ink-2);padding:8px 0;border-top:1px dashed var(--hair)}
.row .r{color:var(--ink-3);flex:0 0 120px}
.row .x{color:var(--off)}.row .ok{color:var(--on)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{border:1px solid var(--hair);border-radius:14px;padding:20px 18px;background:var(--panel);min-width:0}
.stat .big{font:360 34px/1 var(--display);color:var(--star);font-variant-numeric:tabular-nums}
.stat .lab{font:400 12.5px/1.4 var(--mono);color:var(--ink-3);margin-top:8px}

/* ---------- deep-link grid ---------- */
.deep{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:800px){.deep{grid-template-columns:1fr}}
.deep a{display:block;border:1px solid var(--hair);border-radius:14px;padding:20px 22px;text-decoration:none;
  background:var(--panel);transition:border-color .15s,transform .15s}
.deep a:hover{border-color:var(--star);transform:translateY(-2px)}
.deep b{font:600 16px var(--sans);display:flex;justify-content:space-between;gap:8px;color:var(--ink)}
.deep b .ar{color:var(--star)}
.deep p{margin:8px 0 0;color:var(--ink-3);font-size:13.5px}

/* ---------- final CTA plate ---------- */
.plot{margin-top:48px;border:1px solid var(--hair);border-radius:22px;padding:44px 36px;backdrop-filter:blur(6px);
  background:radial-gradient(500px 240px at 85% 0,var(--violet-soft),transparent 70%),var(--panel)}
.plot h2{font:360 clamp(28px,3.6vw,42px)/1.08 var(--display);margin:0 0 26px;color:var(--ink)}
.aud{border:1px solid var(--hair);border-radius:14px;padding:22px}
.aud .k{font:500 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--violet)}
.aud p{color:var(--ink-2);font-size:14.5px;margin:10px 0 16px}

/* ---------- code blocks ---------- */
.code,pre.code{font:400 13.5px/1.6 var(--mono);color:var(--ink);background:rgba(0,0,0,.35);
  border:1px solid var(--hair);border-radius:12px;padding:16px 18px;overflow-x:auto}
.code .c{color:var(--ink-3)}.code .d,.code .s{color:var(--star)}.code .k{color:var(--violet)}
code{font:400 .9em var(--mono);color:var(--ink);background:rgba(255,255,255,.06);padding:1px 5px;border-radius:5px}
.connect{border:1px solid var(--hair);border-radius:14px;background:var(--panel);backdrop-filter:blur(6px);
  padding:18px 20px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.connect .lbl{font:600 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--violet)}
.connect .code{flex:1;min-width:0}

/* ---------- logos / works-with strip ---------- */
.logos{display:flex;flex-wrap:wrap;gap:8px 20px;font:500 13px var(--mono);color:var(--ink-3);align-items:center}
.logos .dotsep{color:var(--hair-2)}

/* ---------- tags / badges ---------- */
.tag{display:inline-block;font:500 10px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;
  padding:4px 7px;border:1px solid var(--hair-2);border-radius:5px;color:var(--star);vertical-align:.12em;white-space:nowrap}
.tag.soon{color:var(--violet);border-color:rgba(139,116,255,.4)}
.tag.now,.tag.ok{color:var(--on);border-color:rgba(83,217,168,.4)}
.tag.beta{color:var(--star)}
.radar{color:var(--ink-3);font:500 11px var(--mono);letter-spacing:.04em}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--hair);border-radius:14px;background:var(--panel)}
table.matrix{border-collapse:collapse;width:100%;font-size:14px;min-width:560px}
table.matrix th,table.matrix td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--hair);vertical-align:top}
table.matrix thead th{font:500 11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
table.matrix tbody th{font-weight:500;color:var(--ink)}
table.matrix tr:last-child td,table.matrix tr:last-child th{border-bottom:0}

/* ---------- callouts ---------- */
.callout{border:1px solid var(--hair);border-left:3px solid var(--star);border-radius:12px;
  padding:20px 22px;background:var(--panel);color:var(--ink-2);font-size:15px;max-width:74ch}
.callout .eyebrow{margin-bottom:8px}
.callq{font:400 13px var(--mono);color:var(--ink-3);margin:16px 0 0}

/* ---------- breadcrumb ---------- */
.crumb{font:500 12px var(--mono);letter-spacing:.06em;color:var(--ink-3);padding-block:20px 0}
.crumb a{text-decoration:none}.crumb a:hover{color:var(--ink-2)}

/* ---------- footer ---------- */
.site-foot{margin-top:72px;border-top:1px solid var(--hair);padding-block:44px 48px}
.site-foot .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:28px}
@media(max-width:820px){.site-foot .cols{grid-template-columns:1fr 1fr}}
.site-foot .cols p{color:var(--ink-3);font-size:13.5px;max-width:30ch;margin:0}
.site-foot h4{font:500 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 12px}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.site-foot a{color:var(--ink-2);text-decoration:none;font-size:14px}
.site-foot a:hover{color:var(--ink)}
.site-foot .base{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:34px;
  padding-top:20px;border-top:1px solid var(--hair);color:var(--ink-3);font:400 12.5px var(--mono)}

/* ---------- placeholders (gate: dashed, obvious) ---------- */
.ph{color:var(--star);border-bottom:1px dashed rgba(255,200,87,.55);font-style:normal}

/* ---------- utilities ---------- */
.mt-0{margin-top:0}.mt-s{margin-top:16px}.mt-m{margin-top:30px}.mt-l{margin-top:48px}
.muted{color:var(--ink-3)}
.wrap-narrow{max-width:760px;margin-inline:auto}