/* Arthur AI Advisory: site styles ("Cinematic tech"). No framework, no build step.
   Fonts: Sora (headings), Manrope (body), JetBrains Mono (labels). All SIL OFL 1.1, self-hosted. */
@font-face{font-family:"Sora";src:url("/assets/Sora-var-latin.woff2") format("woff2");font-weight:300 800;font-style:normal;font-display:swap}
@font-face{font-family:"Manrope";src:url("/assets/Manrope-var-latin.woff2") format("woff2");font-weight:400 800;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("/assets/JetBrainsMono-var-latin.woff2") format("woff2");font-weight:400 600;font-style:normal;font-display:swap}

:root{
  --bg:#060608; --bg-2:#0A0A0E; --surface:rgba(255,255,255,.035); --surface-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09); --line-strong:rgba(255,255,255,.17);
  --text:#F2F3F7; --muted:#AEB2BF; --faint:#8D92A2;
  --cyan:#46E3FF; --violet:#A98BFF; --accent:#46E3FF; --accent-ink:#05060A;
  --grad:linear-gradient(92deg,#46E3FF,#A98BFF);
  --radius:18px; --max:1200px;
  --font:"Manrope",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --display:"Sora",var(--font);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:1.0625rem;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip;position:relative}
img,svg{max-width:100%;height:auto}
a{color:var(--cyan);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:12px;z-index:100;background:var(--cyan);color:var(--accent-ink);padding:10px 14px;border-radius:999px;font-weight:700}
.wrap{max-width:var(--max);margin:0 auto;padding:0 clamp(20px,4vw,40px)}
h1,h2,h3{font-family:var(--display);line-height:1.08;letter-spacing:-.035em;margin:0 0 .5em;font-weight:600}
h1{font-size:clamp(2.4rem,5.2vw,4.4rem);letter-spacing:-.045em;max-width:20ch}
h2{font-size:clamp(1.75rem,3.4vw,2.8rem)}
h3{font-size:1.35rem;letter-spacing:-.025em}
p{margin:0 0 1em}
.lede{font-size:clamp(1.12rem,1.5vw,1.28rem);color:#C5C9D6;max-width:60ch}
.muted{color:var(--muted)} .small{font-size:.92rem}
.grad{background:linear-gradient(95deg,#FFFFFF 10%,#9FEFFF 45%,#B9A2FF 85%);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:.76rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:#CDD1DC;
  padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.03);margin:0 0 1.5rem}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);flex:none}
@media (max-width:560px){.eyebrow{letter-spacing:.08em;font-size:.72rem}}

/* Background: aurora + faint grid (decorative) */
.fx{position:absolute;left:0;right:0;top:0;height:1000px;overflow:hidden;pointer-events:none;z-index:0}
.fx .aur{position:absolute;inset:-20% -10% auto -10%;height:110%;filter:blur(70px);opacity:.42}
.home .fx .aur{opacity:.75}
.fx .aur b{position:absolute;border-radius:50%;mix-blend-mode:screen}
.fx .aur b:nth-child(1){width:46vw;height:30vw;left:42%;top:4%;background:radial-gradient(closest-side,rgba(70,227,255,.55),transparent);animation:aa1 18s ease-in-out infinite alternate}
.fx .aur b:nth-child(2){width:40vw;height:34vw;left:58%;top:16%;background:radial-gradient(closest-side,rgba(156,123,255,.6),transparent);animation:aa2 22s ease-in-out infinite alternate}
.fx .aur b:nth-child(3){width:34vw;height:22vw;left:20%;top:28%;background:radial-gradient(closest-side,rgba(60,90,255,.32),transparent);animation:aa1 26s ease-in-out infinite alternate-reverse}
@keyframes aa1{to{transform:translate(-8vw,4vw) scale(1.15)}}
@keyframes aa2{to{transform:translate(6vw,-3vw) scale(.9)}}
.fx .grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:64px 64px;
  -webkit-mask-image:radial-gradient(70% 55% at 50% 25%,#000,transparent 75%);mask-image:radial-gradient(70% 55% at 50% 25%,#000,transparent 75%);animation:gp 40s linear infinite}
@keyframes gp{to{background-position:0 64px,64px 0}}
@media (max-width:700px){.fx .aur{filter:blur(50px)}.fx .aur b:nth-child(1){width:90vw;height:60vw;left:20%}.fx .aur b:nth-child(2){width:80vw;height:70vw;left:40%}}
.site-header,main,.site-footer{position:relative;z-index:1}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,6,8,.66);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.wordmark{display:inline-flex;align-items:center;gap:11px;color:var(--text);text-decoration:none;font-family:var(--display);font-weight:600;font-size:1.02rem;letter-spacing:-.01em;white-space:nowrap}
.wordmark svg{width:30px;height:30px;flex:none}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-links a{display:block;color:var(--muted);text-decoration:none;font-size:.93rem;font-weight:500;padding:8px 12px;border-radius:999px}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a[aria-current="page"]{color:var(--text);background:rgba(255,255,255,.06);box-shadow:inset 0 0 0 1px var(--line)}
.nav-links .btn{margin-left:10px;padding:10px 18px;color:var(--accent-ink)}
.nav-links .btn:hover{background:var(--grad)}
.nav-toggle{display:none;background:rgba(255,255,255,.04);border:1px solid var(--line-strong);color:var(--text);border-radius:999px;padding:8px 16px;font:inherit;font-size:.95rem;cursor:pointer}
@media (max-width:960px){
  .nav{flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
  .js .nav-toggle{display:inline-flex;align-items:center;gap:8px}
  .nav-links{width:100%;flex-direction:column;align-items:stretch;gap:2px;padding:8px 0 14px}
  .js .nav-links{display:none}
  .js .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;font-size:1.02rem;border-radius:12px}
  .nav-links .btn{margin:10px 0 0;text-align:center}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55em;font-family:var(--display);font-weight:600;font-size:.98rem;line-height:1.2;text-decoration:none;padding:15px 24px;border-radius:999px;border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease}
.btn-primary{background:var(--grad);color:var(--accent-ink)!important;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),0 10px 40px -12px rgba(110,170,255,.75)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.35),0 16px 50px -12px rgba(110,170,255,.95)}
.btn-primary::after{content:"\2192";transition:transform .18s ease}
.btn-primary:hover::after{transform:translateX(3px)}
.nav-links .btn-primary::after{content:none}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--text)!important;border-color:rgba(255,255,255,.16)}
.btn-ghost:hover{border-color:rgba(70,227,255,.6);background:rgba(70,227,255,.07)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.6rem}
.text-link{font-family:var(--display);font-weight:600;text-decoration:none;color:var(--cyan)}
.text-link::after{content:" \2192"}
.text-link:hover{text-decoration:underline}

/* Sections */
main{display:block}
section{padding:clamp(44px,6vw,80px) 0}
.hero{padding:clamp(64px,10vw,140px) 0 clamp(48px,7vw,96px)}
.hero h1{font-size:clamp(2.6rem,5.8vw,5.2rem);line-height:1.02}
.page-hero{padding:clamp(56px,8vw,112px) 0 clamp(28px,4vw,48px)}
.page-hero h1{line-height:1.04}
.section-head{max-width:760px;margin-bottom:2rem}
.divider{border:0;border-top:1px solid var(--line);margin:0}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:820px){.grid-2,.grid-3{grid-template-columns:1fr}}

/* Glass cards */
.card,.cta-band,.fc-q,.callout{background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 30px 80px -40px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.07)}
.card{border-radius:var(--radius);padding:clamp(24px,3vw,36px);position:relative;overflow:hidden;transition:transform .25s ease,border-color .25s ease}
.card h3{margin-bottom:.4em}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.card-feature::before{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;background:radial-gradient(closest-side,rgba(156,123,255,.2),transparent);pointer-events:none}
.card-feature:nth-child(even)::before{background:radial-gradient(closest-side,rgba(70,227,255,.18),transparent)}
.card-feature > *{position:relative}
.card-feature:hover{border-color:rgba(70,227,255,.32)}
.card .tag{display:inline-block;font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:.9rem}
.phase-num{font-family:var(--display);font-weight:700;font-size:clamp(3.6rem,6vw,5.4rem);line-height:1;letter-spacing:-.06em;margin:0 0 .3em;
  background:linear-gradient(180deg,#FFFFFF 10%,rgba(255,255,255,.1));-webkit-background-clip:text;background-clip:text;color:transparent}
.paths h3{font-size:clamp(2rem,3.4vw,2.8rem);letter-spacing:-.04em;margin-bottom:.35em}

ul.clean{list-style:none;padding:0;margin:0}
ul.ticks{list-style:none;padding:0;margin:0 0 1em}
ul.ticks li{position:relative;padding-left:1.6em;margin:.5em 0}
ul.ticks li::before{content:"";position:absolute;left:.1em;top:.62em;width:.55em;height:.55em;border-radius:50%;background:var(--grad);box-shadow:0 0 10px rgba(70,227,255,.5)}
.proof-list{display:grid;gap:12px}
.proof-list li{padding:20px 22px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.025);transition:border-color .2s,background .2s}
.proof-list li:hover{border-color:rgba(169,139,255,.4);background:rgba(169,139,255,.05)}
.proof-list .label{display:block;font-family:var(--display);font-weight:600;letter-spacing:-.01em;color:var(--text);margin-bottom:4px}
.home .proof-list .label{font-family:var(--mono);font-size:.76rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--violet)}
.proof-list .muted{color:#D3D6E0}
.label{font-weight:700;color:var(--text)}
.callout{border-left:3px solid var(--cyan);padding:18px 22px;border-radius:0 14px 14px 0}
.shows{margin-top:1.2rem;padding-top:1rem;border-top:1px solid var(--line);color:var(--muted)}
.shows strong{color:var(--text)}
.cta-band{border-radius:24px;padding:clamp(36px,6vw,80px);position:relative;overflow:hidden;text-align:center}
.cta-band::after{content:"";position:absolute;left:50%;top:100%;width:900px;height:500px;transform:translate(-50%,-55%);background:radial-gradient(closest-side,rgba(70,227,255,.26),rgba(156,123,255,.16) 50%,transparent);pointer-events:none}
.cta-band > *{position:relative;z-index:1}
.cta-band .lede{margin-left:auto;margin-right:auto}.cta-band .btn-row{justify-content:center}
.cta-band h2{font-size:clamp(2.3rem,5vw,4.2rem)}
dl.facts{display:grid;grid-template-columns:max-content 1fr;gap:12px 24px;margin:0}
dl.facts dt{font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--violet);padding-top:.25em}
dl.facts dd{margin:0;color:#D3D6E0}
@media (max-width:600px){dl.facts{grid-template-columns:1fr;gap:2px}dl.facts dd{margin-bottom:14px}}
.prose h2{margin-top:2.4rem;font-size:clamp(1.5rem,2.4vw,1.9rem)}
.prose ul{padding-left:1.2em}
.wrap.prose > *{max-width:740px}

/* Home */
.hero-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:56px;align-items:center}
@media (max-width:980px){.hero-grid{grid-template-columns:1fr;gap:40px}}
.trace{padding:24px 24px 18px;border-radius:20px}
.trace .hd{font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);padding-bottom:14px;border-bottom:1px solid var(--line);margin:0 0 6px}
.trace ol{list-style:none;margin:0;padding:0;position:relative}
.trace ol::before{content:"";position:absolute;left:5px;top:22px;bottom:22px;width:1px;background:linear-gradient(180deg,var(--cyan),var(--violet));opacity:.6}
.trace li{display:grid;grid-template-columns:11px 1fr;gap:16px;align-items:start;padding:12px 0}
.trace .d{width:11px;height:11px;border-radius:50%;background:var(--bg);border:2px solid var(--cyan);margin-top:.35em;position:relative}
.trace li:nth-child(3) .d{border-color:#86B3FF}.trace li:nth-child(4) .d{border-color:var(--violet);background:var(--violet);box-shadow:0 0 12px var(--violet)}
.trace .k{display:block;font-family:var(--display);font-weight:600;color:var(--text);font-size:1rem}
.trace .v{display:block;color:var(--muted);font-size:.93rem;line-height:1.45}
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(32px,6vw,88px);align-items:start}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.band-dark{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:radial-gradient(60% 80% at 50% 0%,rgba(156,123,255,.12),transparent 70%),#08080B}
.phase-card{padding:32px}
.phase-card::after{content:"";position:absolute;left:32px;right:32px;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.7}
.phase-card:nth-child(2)::after{background:linear-gradient(90deg,transparent,#7FA7FF,transparent)}
.phase-card:nth-child(3)::after{background:linear-gradient(90deg,transparent,var(--violet),transparent)}
.phase-card:hover{transform:translateY(-3px);border-color:rgba(70,227,255,.3)}
.phase-card h3{font-size:1.65rem}

/* Forms */
form .field{margin-bottom:18px}
label,.legend{display:block;font-weight:600;margin-bottom:6px}
.opt{font-weight:400;color:var(--faint)}
input[type=text],input[type=email],select,textarea{width:100%;font:inherit;color:var(--text);background:rgba(255,255,255,.04);border:1px solid var(--line-strong);border-radius:12px;padding:12px 14px;transition:border-color .15s,background .15s}
input[type=text]:hover,input[type=email]:hover,select:hover,textarea:hover{border-color:rgba(255,255,255,.28)}
select option{background:#111116;color:var(--text)}
input::placeholder,textarea::placeholder{color:#8D92A2}
textarea{min-height:130px;resize:vertical}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--cyan);outline-offset:1px;background:rgba(70,227,255,.04)}
.help{font-size:.9rem;color:var(--faint);margin-top:6px}
.check{display:flex;gap:12px;align-items:flex-start;font-weight:400;color:var(--muted)}
.check input{margin-top:.3em;width:20px;height:20px;accent-color:var(--cyan);flex:none}
.todo{display:inline-block;font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.04em;color:#D9CCFF;border:1px dashed rgba(169,139,255,.6);border-radius:8px;padding:3px 9px;margin-bottom:14px}
.notice{margin-top:14px;padding:14px 16px;border-radius:12px;border:1px solid rgba(169,139,255,.45);background:rgba(169,139,255,.08);color:#E6DEFF}
.notice[hidden]{display:none}

/* Fit Check */
.fc-group{margin-top:3rem}
.fc-group > h2{display:flex;align-items:center;gap:14px;font-size:clamp(1.6rem,2.6vw,2.1rem)}
.fc-group > h2 .phase-num{font-family:var(--mono);font-size:.8rem;font-weight:500;letter-spacing:.12em;line-height:1;margin:0;padding:7px 12px;border-radius:999px;border:1px solid rgba(70,227,255,.4);background:rgba(70,227,255,.08);color:var(--cyan);-webkit-text-fill-color:var(--cyan)}
.fc-q{border-radius:var(--radius);padding:24px 24px 16px;margin:0 0 16px;min-width:0}
.fc-q legend{font-family:var(--display);font-weight:600;font-size:1.1rem;letter-spacing:-.015em;padding:0;margin-bottom:14px;line-height:1.4;float:left;width:100%}
.fc-q legend + *{clear:both}
.fc-q .topic{color:var(--cyan)}
.fc-opts{display:grid;gap:8px}
.fc-opt{display:flex;gap:12px;align-items:flex-start;padding:13px 16px;border:1px solid var(--line);border-radius:12px;cursor:pointer;font-weight:400;margin:0;color:var(--muted);background:rgba(255,255,255,.015);transition:border-color .15s,background .15s,color .15s}
.fc-opt:hover{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--text)}
.fc-opt input{margin-top:.28em;width:18px;height:18px;accent-color:var(--cyan);flex:none}
.fc-opt:has(input:checked){border-color:rgba(70,227,255,.7);background:linear-gradient(90deg,rgba(70,227,255,.1),rgba(169,139,255,.08));color:var(--text);box-shadow:0 0 0 1px rgba(70,227,255,.25)}
.fc-q.missing{border-color:#FF8FA3;box-shadow:0 0 0 1px #FF8FA3}
.fc-progress{font-family:var(--mono);font-size:.85rem;color:var(--muted)}
.result{margin-top:28px}
.result .card-feature{border-color:rgba(70,227,255,.35);box-shadow:0 0 0 1px rgba(70,227,255,.08),0 40px 100px -40px rgba(110,140,255,.6)}
.result .score{font-family:var(--mono);font-size:.82rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.result .band{font-size:clamp(2.2rem,4.4vw,3.4rem);margin:.15em 0 .3em;background:linear-gradient(95deg,#FFFFFF 10%,#9FEFFF 50%,#B9A2FF 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.meter{height:10px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;margin:14px 0 22px;max-width:520px}
.meter span{display:block;height:100%;background:var(--grad);border-radius:99px;box-shadow:0 0 16px rgba(70,227,255,.6);transition:width .8s cubic-bezier(.2,.8,.2,1)}
.disclaimer{font-size:.9rem;color:var(--faint);border-top:1px solid var(--line);padding-top:16px;margin-top:24px}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:clamp(40px,6vw,80px);padding:48px 0 40px;color:var(--muted);font-size:.95rem;background:rgba(255,255,255,.012)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:28px}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr}}
.footer-nav{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none;padding:0;margin:0 0 12px}
.footer-nav a,.site-footer a{color:#C9CDD8}
.footer-nav a:hover,.site-footer a:hover{color:var(--cyan)}
.fine{font-size:.85rem;color:var(--faint);margin-top:18px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}