/* The Supplement Science Teacher: shared site styles.
   Layout: dark "set" header band with the page title and form card, then exercise-book paper sections below. */
:root{
  --grey:#2B2A30; --ink:#1D1A26; --chalk:#F2F0EA; --paper:#F6F5F1; --violet:#5B2BA0; --iodine:#B89CF2;
  --hl:#FFD23F; --pen:#D32F2F; --mineral:#2B63A8; --muted:#5D5A66; --line:rgba(29,26,38,.14);
  --display:"Bricolage Grotesque",system-ui,sans-serif; --body:"Atkinson Hyperlegible",system-ui,sans-serif; --hand:"Caveat","Segoe Print",cursive;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 var(--body)}
a{color:var(--violet)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--hl);outline-offset:2px}
.wrap{max-width:1040px;margin:0 auto;padding-inline:20px}
.top{background:var(--grey);color:var(--chalk);background-image:radial-gradient(60% 70% at 70% 20%,rgba(123,74,210,.5),transparent 70%)}
.nav{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-block:18px}
.brand{display:flex;gap:10px;align-items:center;color:var(--chalk);text-decoration:none;font-weight:700;letter-spacing:.02em}
.brand .t{width:34px;height:40px;border-radius:5px;background:var(--mineral);display:grid;place-items:center;font:800 17px var(--display);color:var(--chalk);position:relative}
.brand .t small{position:absolute;left:4px;top:1px;font:700 8px var(--body)}
.brand .logo{width:34px;height:41px;flex:none;display:block}
.nav a.yt{color:var(--chalk);font-size:15px}
.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:40px;align-items:center;padding-block:28px 64px}
@media (max-width:820px){.hero{grid-template-columns:1fr;gap:28px;padding-block:12px 40px}}
.eb{font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--iodine)}
h1{font:800 clamp(38px,6vw,64px)/1 var(--display);letter-spacing:-.02em;margin:10px 0 16px;text-wrap:balance}
h1 em{font-style:normal;background:linear-gradient(transparent 14%,var(--hl) 14%,var(--hl) 90%,transparent 90%);color:var(--ink);padding:0 8px}
.lede{font-size:19px;max-width:34em;margin:0 0 18px;color:#E6E3EC}
.meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:14px;color:#CFCBD8;margin:0;padding:0;list-style:none}
.meta li::before{content:"\2713  ";color:var(--hl);font-weight:700}
.card{background:var(--paper);color:var(--ink);border-radius:14px;padding:26px 24px;box-shadow:0 18px 50px rgba(0,0,0,.35);
  background-image:linear-gradient(rgba(91,43,160,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(91,43,160,.06) 1px,transparent 1px);background-size:22px 22px}
.card h2{font:800 24px/1.15 var(--display);margin:0 0 6px}
.card p{margin:0 0 14px;font-size:15px;color:var(--muted)}
form{display:grid;gap:10px}
label{font-weight:700;font-size:14px;display:grid;gap:4px}
input[type=email],input[type=text]{font:17px var(--body);padding:12px 14px;border:2px solid var(--ink);border-radius:8px;background:#fff;color:var(--ink);width:100%}
button.go{font:800 18px var(--display);background:var(--hl);color:var(--ink);border:0;border-radius:8px;padding:14px 16px;cursor:pointer}
button.go:hover{filter:brightness(.95)}
.consent{font-size:13px;color:var(--muted);margin:2px 0 0}
.formmsg{font-size:14px;font-weight:700;color:var(--violet);min-height:1.2em;margin:0}
section.band{padding-block:56px}
section.band h2{font:800 clamp(26px,4vw,36px)/1.1 var(--display);margin:0 0 18px;text-wrap:balance}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:16px}
.item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.item b{display:block;font-size:16px;margin-bottom:4px}
.item span{font-size:15px;color:var(--muted)}
.grades{display:grid;gap:10px;max-width:640px}
.gr{display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.gr .l{font:700 46px/1 var(--hand);color:var(--pen);text-align:center;border:3px solid var(--pen);border-radius:50%;width:52px;height:52px;display:grid;place-items:center;transform:rotate(-6deg)}
.gr b{display:block}
.gr span{font-size:14px;color:var(--muted)}
.note{font:700 24px/1.25 var(--hand);color:var(--violet);margin:18px 0 0;max-width:36em}
.about{display:grid;grid-template-columns:auto minmax(0,720px);gap:18px;align-items:start}
.about .t{width:64px;height:76px;border-radius:8px;background:var(--mineral);color:var(--chalk);display:grid;place-items:center;font:800 30px var(--display)}
footer{background:var(--ink);color:#CFCBD8;font-size:14px;padding-block:28px}
footer a{color:var(--chalk)}
footer .row{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.doc{max-width:760px}
.doc h1{color:var(--ink);font-size:clamp(32px,5vw,46px)}
.doc h2{font:800 22px/1.2 var(--display);margin:28px 0 8px}
.doc p,.doc li{font-size:16px}
.draft{background:var(--hl);color:var(--ink);font-weight:700;padding:10px 14px;border-radius:8px;font-size:14px}
.btn{display:inline-block;font:800 19px var(--display);background:var(--hl);color:var(--ink);text-decoration:none;border-radius:10px;padding:16px 22px}
.btn.alt{background:transparent;color:var(--chalk);border:2px solid var(--chalk)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}