:root{
  --bg:#F7F2EA;--bg-2:#EFE7DA;--surface:#FFFDF9;
  --ink:#14203A;--ink-2:#4A5672;--ink-3:#7A8299;--line:#E2D8C7;--line-2:#D5C9B4;
  --sun:#F3C74B;--sun-soft:#FBEBB8;--ok:#2F7A4F;--warn:#B4562F;
  --veil:rgba(247,242,234,0);--veil-2:rgba(247,242,234,.97);
  --shadow-lg:0 2px 0 rgba(20,32,58,.03),0 30px 60px -24px rgba(20,32,58,.32);
  --sans:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --serif:"Instrument Serif",ui-serif,Georgia,"Times New Roman",serif;
  /* paper stays light in both themes */
  --p-bg:#FFFDF9;--p-ink:#14203A;--p-ink-2:#4A5672;--p-ink-3:#7A8299;--p-line:#E2D8C7;--p-line-2:#D5C9B4;--p-bg-2:#F4EEE3;--p-soft:#FBEBB8;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0E1525;--bg-2:#131C30;--surface:#18223A;
  --ink:#F3EDE2;--ink-2:#B3BCD0;--ink-3:#8790A8;--line:#26314B;--line-2:#33405E;--sun-soft:#3A3524;
  --veil:rgba(14,21,37,0);--veil-2:rgba(14,21,37,.97);color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%}
[hidden]{display:none!important}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{text-wrap:balance;margin:0}
p{margin:0}
.s{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:-.01em}
a:focus-visible,button:focus-visible{outline:3px solid var(--sun);outline-offset:2px}

.nav{padding-block:22px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:20px;letter-spacing:-.035em}
.logo svg{width:30px;height:30px;color:var(--sun)}
.nav-link{font-size:14px;font-weight:600;color:var(--ink-2);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:8px 14px;background:var(--surface)}
.nav-link:hover{color:var(--ink)}

.hero{display:grid;justify-items:center;text-align:center;padding-block:40px 52px}
.hero-copy{display:grid;gap:22px;justify-items:center;min-width:0;grid-template-columns:minmax(0,1fr);width:100%}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.chip{font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2)}
.chip.y{background:var(--sun);border-color:var(--sun);color:#14203A}
h1{font-size:clamp(40px,6.2vw,72px);line-height:1;letter-spacing:-.045em;font-weight:700;max-width:15ch}
h1 .s{font-size:1.08em}
.lede{font-size:clamp(17px,1.6vw,19px);color:var(--ink-2);max-width:30em}

.cap{display:grid;gap:10px;max-width:480px;width:100%;grid-template-columns:minmax(0,1fr)}
.cap-row{display:flex;gap:8px;background:var(--surface);border:1.5px solid var(--line-2);border-radius:999px;padding:6px;transition:border-color .2s,box-shadow .2s}
.cap-row:focus-within{border-color:var(--ink);box-shadow:0 0 0 4px var(--sun-soft)}
.cap input[type=email]{flex:1;min-width:0;width:100%;border:0;background:transparent;font:inherit;font-size:16px;color:var(--ink);padding:10px 14px;outline:none}
.cap input::placeholder{color:var(--ink-3)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.btn{border:0;cursor:pointer;font:inherit;font-weight:600;font-size:15px;border-radius:999px;padding:12px 20px;background:var(--ink);color:var(--bg);display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;transition:transform .15s;text-decoration:none}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.7;cursor:default;transform:none}
.btn svg{width:16px;height:16px}
.btn-sm{padding:8px 14px;font-size:13.5px;background:var(--sun);color:#14203A}
.cap-note{font-size:13px;color:var(--ink-3);text-align:center}
.cap-err{font-size:13px;color:var(--warn);text-align:center}
.cap-ok{font-size:15px;color:var(--ok);display:flex;gap:6px;align-items:center;justify-content:center}
.cap-ok svg{width:16px;height:16px}
.proof{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--ink-2);text-align:left}
.proof img{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid var(--sun)}
.proof b{color:var(--ink);display:block;font-weight:600}

section{padding-block:0 40px}
.gate-wrap{position:relative}
.done{display:none;align-items:center;justify-content:center;gap:10px 14px;margin:0 auto 20px;max-width:820px;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:12px 16px;font-size:14.5px;color:var(--ink-2);flex-wrap:wrap;text-align:center}
.done b{color:var(--ink)}
.done>svg{width:18px;height:18px;color:var(--ok);flex:none}
.unlocked .done{display:flex}

/* the handout sheet */
.doc{background:var(--p-bg);color:var(--p-ink);border-radius:10px;box-shadow:var(--shadow-lg);padding:clamp(24px,5vw,60px);max-width:820px;margin:0 auto;position:relative;overflow:hidden;display:flex;flex-direction:column;gap:14px}
.doc>*,.locked-part>*{margin:0}
.locked-part{display:flex;flex-direction:column;gap:14px;transition:filter .9s ease,opacity .9s ease}
.sh-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--p-ink-3);border-bottom:1px solid var(--p-line);padding-bottom:12px;margin-bottom:6px!important}
.sh-top span:first-child{display:flex;align-items:center;gap:6px}
.sh-top svg{width:14px;height:14px;color:var(--sun)}
.doc h2{font-size:23px;font-weight:600;letter-spacing:-.025em;line-height:1.2;margin-top:10px;padding-top:16px;border-top:1px solid var(--p-line);color:var(--p-ink)}
.doc h2:first-of-type{border-top:0;padding-top:0}
.doc h2 .num{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--sun);font-size:14px;margin-right:10px;vertical-align:3px;letter-spacing:0}
.doc h3{font-size:18px;font-weight:600;letter-spacing:-.015em;margin-top:4px;color:var(--p-ink)}
.doc p{font-size:16px;line-height:1.62;color:var(--p-ink-2)}
.doc p.lede{font-size:17.5px;line-height:1.55;color:var(--p-ink)}
.doc strong{color:var(--p-ink);font-weight:600}
.doc em{font-family:var(--serif);font-size:1.14em;color:var(--p-ink)}
.doc ul,.doc ol{margin:0;padding:14px 18px;background:#FFFFFF;border-radius:18px;box-shadow:inset 0 0 0 1px var(--p-line);list-style:none;display:grid;gap:8px;counter-reset:li}
.doc li{position:relative;padding-left:24px;font-size:15.5px;line-height:1.5;color:var(--p-ink-2)}
.doc ul>li::before{content:"";position:absolute;left:3px;top:.5em;width:8px;height:8px;border-radius:2px;background:var(--sun)}
.doc ol>li{padding-left:34px}
.doc ol>li::before{counter-increment:li;content:counter(li);position:absolute;left:0;top:0;width:24px;height:24px;border-radius:7px;background:var(--sun);display:grid;place-items:center;font-size:12px;font-weight:700;color:#14203A}
.doc li ul,.doc li ol{background:none;box-shadow:none;padding:6px 0 0}
.doc ul.chk{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));column-gap:18px}
.doc ul.chk>li{padding-left:28px}
.doc ul.chk>li::before{left:0;top:.2em;width:16px;height:16px;border-radius:5px;background:#FFFFFF;box-shadow:inset 0 0 0 1.5px var(--p-line-2)}
.doc blockquote{background:var(--p-soft);border-radius:18px;padding:16px 20px;margin:0}
.doc blockquote p{color:var(--p-ink);font-size:16px;margin:0}
.doc blockquote p+p{margin-top:8px}
.doc .tbl{overflow-x:auto}
.doc table{width:100%;border-collapse:collapse;font-size:15px}
.doc th{text-align:left;font-size:11.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--p-ink-2);background:var(--p-bg-2);padding:10px 14px}
.doc td{padding:9px 14px;border-top:1px solid var(--p-line);vertical-align:top;color:var(--p-ink-2)}
.doc hr{display:none}

.gate-on .locked-part{filter:blur(7px);opacity:.5;user-select:none;pointer-events:none;max-height:240px;overflow:hidden}
.veil{position:absolute;left:0;right:0;bottom:0;height:72%;min-height:380px;background:linear-gradient(var(--veil),var(--veil-2) 38%);display:flex;align-items:flex-end;justify-content:center;padding:0 16px 32px;transition:opacity .6s}
.unlocked .veil{opacity:0;pointer-events:none}
.unlocked .locked-part{max-height:none}
.lock-card{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow-lg);padding:28px;max-width:500px;width:100%;display:grid;gap:14px;text-align:center;grid-template-columns:minmax(0,1fr);justify-items:stretch}
.lock-ic{width:56px;height:56px;border-radius:18px;background:var(--sun);display:grid;place-items:center;margin:0 auto}
.lock-ic svg{width:26px;height:26px;color:#14203A}
.lock-h{font-size:24px;letter-spacing:-.03em;line-height:1.15;font-weight:700}
.lock-card p{color:var(--ink-2);font-size:15px}
.lock-card .cap{max-width:none}

footer{border-top:1px solid var(--line);padding-block:28px;margin-top:24px;font-size:13px;color:var(--ink-3);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--ink-2)}

@media (max-width:520px){
  .cap-row{flex-direction:column;border-radius:20px}
  .lock-card{padding:24px 18px}
  .nav-link{padding:7px 12px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* handouts hub */
.hub-head{text-align:center;display:grid;gap:16px;justify-items:center;padding-block:32px 40px}
.hub-head p{color:var(--ink-2);font-size:18px;max-width:32em}
.band{margin-bottom:40px}
.band h2{font-size:26px;letter-spacing:-.03em;margin-bottom:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.card{display:grid;gap:8px;align-content:start;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s;min-width:0}
.card:hover{border-color:var(--ink-3);transform:translateY(-2px)}
.card b{font-size:16.5px;letter-spacing:-.015em;line-height:1.25}
.card span{font-size:14px;color:var(--ink-2)}
.card i{font-style:normal;font-size:12px;font-weight:600;color:var(--ink-3);letter-spacing:.06em;text-transform:uppercase}