/* Circled site. Same system as the app: warm paper, charcoal ink, one ink-blue accent,
   serif headings, plain sans for everything you read or click. Rules instead of shadows. */
:root{
  --paper:#f6f5f1; --paper-2:#efede6; --card:#fffefb; --ink:#1a1a1a; --ink-2:#3a3936; --muted:#5f5d58; --faint:#8a877f;
  --rule:#dad8d0; --rule-2:#c9c6bc;
  --accent:#1d4e89; --accent-2:#163d6c; --accent-soft:#e3ebf4;
  --red:#c2332f; --good:#1f6b48;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
  --mono:"IBM Plex Mono",Consolas,monospace;
  --hand:"Caveat","Segoe Print",cursive;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#141516; --paper-2:#1b1c1e; --card:#1e1f21; --ink:#ecebe6; --ink-2:#cfcdc6; --muted:#a3a19b; --faint:#7d7b75;
    --rule:#2e2f32; --rule-2:#3b3c40; --accent:#8fb3e0; --accent-2:#adc8ea; --accent-soft:#1c2a3d; --red:#ef7b72; --good:#6cc39a;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#141516; --paper-2:#1b1c1e; --card:#1e1f21; --ink:#ecebe6; --ink-2:#cfcdc6; --muted:#a3a19b; --faint:#7d7b75;
  --rule:#2e2f32; --rule-2:#3b3c40; --accent:#8fb3e0; --accent-2:#adc8ea; --accent-soft:#1c2a3d; --red:#ef7b72; --good:#6cc39a;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{display:block;max-width:100%}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:var(--accent-2)}
h1,h2,h3{font-family:var(--serif);font-weight:600;margin:0;text-wrap:balance;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1160px;margin:0 auto;padding-inline:24px}
@media (max-width:600px){.wrap{padding-inline:16px}}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.eyebrow{font:500 12.5px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.lede{font-size:19px;line-height:1.6;color:var(--ink-2);max-width:62ch}
kbd{font:500 12.5px/1 var(--mono);border:1px solid var(--rule-2);border-bottom-width:2px;border-radius:3px;padding:2px 6px;background:var(--card)}

/* buttons + fields */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 20px;border-radius:6px;border:1px solid var(--rule-2);background:var(--card);color:var(--ink);font:500 16px/1 var(--sans);text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--ink);color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.primary{color:#0e1621}}
:root[data-theme="dark"] .btn.primary{color:#0e1621}
.btn.primary:hover{background:var(--accent-2);border-color:var(--accent-2)}
.btn small{font-size:13px;color:inherit;opacity:.75;font-weight:400}
.btn:disabled{opacity:.55;cursor:default}
.field{height:46px;border-radius:6px;border:1px solid var(--rule-2);background:var(--card);color:var(--ink);font:16px var(--sans);padding:0 12px;min-width:0}
.field:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}

/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.top .wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font:600 20px/1 var(--serif);color:var(--ink);text-decoration:none}
.logo svg{width:26px;height:26px}
.nav{display:flex;gap:22px;margin-left:auto;font-size:15px}
.nav a{color:var(--ink-2);text-decoration:none}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink);text-decoration:underline}
.top .btn{height:38px;padding:0 14px;font-size:15px}
@media (max-width:860px){.nav{display:none}.top .btn{margin-left:auto}}

/* sections */
.s{padding:88px 0;border-top:1px solid var(--rule)}
.s.first{border-top:0}
.s-head{display:grid;gap:12px;margin-bottom:40px;max-width:720px}
.s-head h2{font-size:clamp(28px,3.6vw,40px);line-height:1.15}
@media (max-width:600px){.s{padding:60px 0}}

/* hero */
.hero{padding:72px 0 56px}
.hero h1{font-size:clamp(38px,6.2vw,72px);line-height:1.04;max-width:15ch}
.hero h1 em{font-style:italic;color:var(--red);text-decoration:underline wavy var(--red);text-decoration-thickness:1.5px;text-underline-offset:8px}
.hero .lede{margin-top:22px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;align-items:center}
.cta .note{font-size:14px;color:var(--muted)}
.shot{margin-top:52px;border:1px solid var(--rule-2);border-radius:8px;overflow:hidden;background:#000;aspect-ratio:16/9}
.shot video,.shot img{width:100%;height:100%;object-fit:cover}
.caption{font-size:14px;color:var(--muted);margin-top:10px}

/* how it works */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;counter-reset:n;list-style:none;padding:0;margin:0}
.steps li{counter-increment:n;border-top:2px solid var(--ink);padding-top:16px}
.steps li::before{content:counter(n);font:500 13px/1 var(--mono);color:var(--muted);display:block;margin-bottom:12px}
.steps h3{font-size:22px;margin-bottom:8px}
.steps p{color:var(--ink-2)}
@media (max-width:820px){.steps{grid-template-columns:1fr;gap:28px}}

/* subjects */
.subj{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
.subj div{border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:18px 18px 20px;background:var(--card)}
.subj b{display:block;font:600 19px/1.25 var(--serif);margin-bottom:4px}
.subj span{font-size:14.5px;color:var(--muted)}
.subj div:last-child{background:var(--accent-soft)}
@media (max-width:900px){.subj{grid-template-columns:repeat(2,1fr)}}
@media (max-width:420px){.subj div{padding:14px}.subj b{font-size:17px}}

/* features: clip + text rows */
.feat{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:48px;align-items:center;padding:36px 0;border-top:1px solid var(--rule)}
.feat:first-of-type{border-top:0;padding-top:0}
.feat.flip .media{order:2}
.feat .media{border:1px solid var(--rule-2);border-radius:8px;overflow:hidden;aspect-ratio:16/10;background:var(--paper-2)}
.feat .media video,.feat .media img{width:100%;height:100%;object-fit:cover}
.feat h3{font-size:clamp(22px,2.4vw,28px);line-height:1.2;margin:8px 0 12px}
.feat p{color:var(--ink-2)}
.feat ul{margin:14px 0 0;padding-left:20px;color:var(--ink-2)}
.feat li{margin:4px 0}
@media (max-width:820px){.feat{grid-template-columns:1fr;gap:20px}.feat.flip .media{order:0}}

.feat .media.media-list{aspect-ratio:auto;display:grid;place-items:center;padding:22px;background:var(--paper-2)}
.media-list ul{list-style:none;margin:0;padding:0;width:100%;max-width:440px;display:grid;gap:10px}
.media-list li{background:var(--card);border:1px solid var(--rule);border-radius:6px;padding:12px 14px;display:grid;gap:2px}
.media-list li b{font:600 16px/1.3 var(--serif)}
.media-list li span{font-size:14px;color:var(--muted)}
.media-list li:first-child{border-left:3px solid var(--accent)}

/* photo band */
.band{background:var(--paper-2)}
.paper-demo{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
.paper-demo div{border:1px solid var(--rule);background:var(--card);border-radius:8px;padding:18px}
.paper-demo b{display:block;font:600 18px var(--serif);margin-bottom:6px}
.paper-demo p{font-size:15.5px;color:var(--ink-2)}
@media (max-width:820px){.paper-demo{grid-template-columns:1fr}}

/* gallery */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.tile{display:block;background:var(--card);border:1px solid var(--rule);border-radius:8px;overflow:hidden;color:inherit;text-decoration:none;text-align:left;padding:0;font:inherit;cursor:zoom-in;width:100%}
.tile:hover{border-color:var(--rule-2)}
.tile img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--paper-2)}
.tile .cap{padding:12px 14px 14px}
.tile .cap b{display:block;font:600 16.5px/1.3 var(--serif);margin-bottom:4px}
.tile .cap span{font-size:13.5px;color:var(--muted)}
.empty{border:1px dashed var(--rule-2);border-radius:8px;padding:28px;color:var(--muted);text-align:center}
.lb{position:fixed;inset:0;z-index:50;background:rgba(15,15,15,.88);display:grid;place-items:center;padding:20px}
.lb figure{margin:0;max-width:min(1100px,100%);max-height:100%;display:grid;gap:10px}
.lb img{max-height:calc(100vh - 120px);width:auto;margin:0 auto;background:#fff}
.lb figcaption{color:#eee;font-size:15px;text-align:center}
.lb figcaption b{font-family:var(--serif);font-size:18px;display:block;color:#fff}
.lb button{position:absolute;top:16px;right:16px;height:40px;padding:0 14px;border-radius:6px;border:1px solid #555;background:#222;color:#fff;font:inherit;cursor:pointer}

/* calculator demo */
.calc-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:48px;align-items:start}
.calc-host{min-height:560px}
.calc-out{font:500 15px var(--mono);color:var(--muted);margin-top:12px;min-height:1.4em}
.try-list{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
.try-list li{border-left:2px solid var(--rule-2);padding-left:12px;color:var(--ink-2);font-size:16px}
@media (max-width:820px){.calc-row{grid-template-columns:1fr}.calc-host{min-height:0;display:flex;justify-content:center}}

/* pricing */
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.price-card{border:1px solid var(--rule-2);background:var(--card);border-radius:8px;padding:24px;display:flex;flex-direction:column;gap:8px}
.price-card.best{border-color:var(--accent);box-shadow:inset 0 3px 0 var(--accent)}
.price-card h3{font-size:22px}
.price-card .amt{font:600 38px/1.05 var(--serif)}
.price-card .amt small{font:400 16px var(--sans);color:var(--muted)}
.price-card .alt{font-size:14.5px;color:var(--muted)}
.price-card ul{margin:6px 0 14px;padding-left:20px;color:var(--ink-2)}
.price-card li{margin:4px 0}
.price-card .btn{margin-top:auto}
@media (max-width:820px){.prices{grid-template-columns:1fr}}

/* schools + sign-up */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
@media (max-width:820px){.split{grid-template-columns:1fr;gap:32px}}
.panel{border:1px solid var(--rule-2);background:var(--card);border-radius:8px;padding:26px}
.panel h3{font-size:22px;margin-bottom:8px}
.form{display:grid;gap:12px;margin-top:16px}
.form .row{display:flex;gap:8px}
.form .row .field{flex:1}
.form label{font-size:14px;font-weight:500}
.form-msg{font-size:15px;min-height:1.4em}
.form-msg.good{color:var(--good)} .form-msg.bad{color:var(--red)}
.hp{position:absolute;left:-9999px}
@media (max-width:480px){.form .row{flex-direction:column}}

/* faq */
.faq{max-width:780px}
.faq details{border-top:1px solid var(--rule);padding:18px 0}
.faq details:last-child{border-bottom:1px solid var(--rule)}
.faq summary{cursor:pointer;font:600 19px/1.35 var(--serif);list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";font:400 22px/1 var(--sans);color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq summary::-webkit-details-marker{display:none}
.faq details p{margin-top:10px;color:var(--ink-2);max-width:68ch}

/* prose pages */
.prose{max-width:720px}
.prose h1{font-size:clamp(32px,4.5vw,46px);margin-bottom:12px}
.prose h2{font-size:24px;margin:36px 0 10px}
.prose p,.prose li{color:var(--ink-2)}
.prose p+p{margin-top:12px}
.prose ul{padding-left:20px}

/* footer */
.foot{border-top:1px solid var(--rule);padding:40px 0 56px;font-size:14.5px;color:var(--muted)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center}
.foot nav{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.foot a{color:var(--muted)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}