/* AskDrills · Direction B "Red Pen". Red = marks, fixes, CTA. Blue = corrections and passing states. */
:root{
  --graphite:#1B1B1F;--paper:#FFFFFF;--desk:#F1F1EF;--red:#D1232A;--red-ink:#A81C22;--blue:#2337C6;--hl:#E4DEFF;--pencil:#5E5E66;
  --line:rgba(27,27,31,.12);--line-strong:rgba(27,27,31,.22);
  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 var(--sans);color:var(--graphite);background:var(--desk);-webkit-font-smoothing:antialiased}
a{color:var(--blue)}.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--mono);font-weight:500}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.01em}
h1{font-size:60px;line-height:1.04;margin:.15em 0 .45em}h2{font-size:40px;line-height:1.1;margin:0 0 .3em}h3{font-size:24px;line-height:1.2;margin:.2em 0 .35em}
.section-label{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--pencil);margin:0 0 6px}

/* nav */
.nav{position:sticky;top:0;background:rgba(241,241,239,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);z-index:5}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav nav{display:flex;align-items:center;gap:28px}.nav nav a{text-decoration:none;color:var(--graphite);font-size:14px;font-weight:500}
.nav nav a.nav-cta{color:#fff;padding:9px 14px;font-size:14px}
.logo{display:flex;align-items:center}.logo img{display:block;height:34px;width:auto}

/* buttons: square-ish, not bouncy pills */
.btn{display:inline-block;border:1.5px solid transparent;border-radius:2px;padding:12px 18px;font:600 15px/1.2 var(--sans);cursor:pointer;text-decoration:none}
.btn.primary{background:var(--red);color:#fff}.btn.primary:hover{background:var(--red-ink)}
.btn.outline,.btn.ghost{background:var(--paper);border-color:var(--graphite);color:var(--graphite)}.btn.outline:hover,.btn.ghost:hover{background:var(--desk)}
.btn.small{padding:7px 12px;font-size:14px;margin-top:14px}.btn:disabled{opacity:.6;cursor:wait}
.btn:focus-visible,a:focus-visible,.tab:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:2px}

/* hero */
.hero{padding:56px 0 40px}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.eyebrow{font:500 12px var(--mono);color:var(--pencil);display:flex;align-items:center;gap:8px;margin:20px 0 0}
.dot{width:7px;height:7px;border-radius:50%;background:var(--red);display:inline-block}
.redline{font-style:italic;background:no-repeat 0 92%/100% .12em linear-gradient(var(--red),var(--red));padding-bottom:.04em}
.lede{font-size:17px;color:var(--graphite);max-width:540px;margin:0}
.cta-row{display:flex;gap:10px;margin:26px 0 12px;flex-wrap:wrap}
.fine{font-size:13px;color:var(--pencil)}.works{font-size:12px;color:var(--pencil);margin-top:26px}

.hero-card{background:var(--paper);border:1px solid var(--line);padding:22px 22px 16px;box-shadow:0 18px 40px rgba(27,27,31,.10)}
.hc-head{display:flex;justify-content:space-between;font-size:11px;color:var(--pencil);border-bottom:1px solid var(--line);padding-bottom:12px}
.hc-title{font-size:26px;margin:16px 0 10px}
.hc-customer{background:var(--desk);padding:8px 12px;font-size:14px}
.hc-label{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--pencil);margin:16px 0 6px}
.hc-markup{display:grid;grid-template-columns:1fr 128px;gap:14px}.hc-markup p{margin:0;font-size:14.5px;line-height:1.75}
.hlt{background:var(--hl)}
del{color:var(--red);text-decoration:line-through;text-decoration-color:var(--red);text-decoration-thickness:1.5px}
ins{color:var(--blue);text-decoration:none;font-weight:600}
.margin-notes{border-left:1px solid var(--red);padding-left:10px}
.margin-notes p,.margin-note{font:italic 15px/1.25 var(--serif);color:var(--red);margin:0 0 10px}
.hc-grade{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;border-top:1px solid var(--line);margin-top:12px;padding-top:14px}
.hc-grade p{margin:0 0 6px;font-size:13.5px}.good{color:var(--blue)}.fix{color:var(--red)}
.score-ring{width:76px;height:76px;border:2px solid var(--red);border-radius:50%;display:grid;place-items:center;font:400 32px/1 var(--serif);color:var(--red);transform:rotate(-6deg);grid-auto-flow:column;align-content:center;justify-content:center;gap:1px}
.score-ring small{font-size:15px;align-self:end;margin-bottom:6px}
.score-ring.pass{border-color:var(--blue);color:var(--blue)}
.hc-foot{display:flex;justify-content:space-between;align-items:center;margin-top:10px}.hc-foot .fine{margin:0}
.blue-link{font-weight:600;font-size:13px;text-decoration:none}

/* strip under hero */
.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;border-top:1px solid var(--line-strong);padding-top:20px;padding-bottom:36px}
.strip h3{font-size:22px;color:var(--pencil);margin:0}.strip p{margin:2px 0 0;font-size:14px;color:var(--pencil)}

/* skills */
.skills{padding-bottom:44px}.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.skill{background:var(--paper);border:1px solid var(--line);padding:16px 18px}.skill b{display:block;margin-bottom:4px;font:500 13px var(--mono);color:var(--red)}.skill span{color:var(--graphite);font-size:15px}

/* drills */
.exercises{padding:48px 0;background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.sub{color:var(--pencil);margin-top:0;max-width:760px}
.mode-banner{background:var(--hl);border-left:3px solid var(--blue);color:var(--graphite);padding:10px 14px;margin:12px 0;font-size:14px}
.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}
.tab{text-align:left;background:var(--desk);border:1px solid var(--line);border-radius:2px;padding:12px 14px;cursor:pointer;font:600 15px/1.35 var(--sans);color:var(--graphite)}
.tab small{display:block;color:var(--pencil);font-weight:400;font-size:13px;margin-top:2px}
.tab .num{display:inline-grid;place-items:center;width:24px;height:24px;border:1.5px solid var(--graphite);border-radius:50%;margin-right:8px;font-size:12px}
.tab.active{border-color:var(--graphite);background:var(--paper);box-shadow:inset 0 -3px 0 var(--graphite)}
.tab.passed .num{background:var(--blue);border-color:var(--blue);color:#fff}.tab.failed .num{background:var(--paper);border-color:var(--red);color:var(--red)}
.ex-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.intro{margin-top:0}
.card{background:var(--paper);border:1px solid var(--line);padding:12px 14px;margin:10px 0}.card pre{white-space:pre-wrap;font:15px/1.6 var(--sans);margin:0}
.card-label{font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--pencil);margin-bottom:6px}
.ticket{background:var(--desk);border-color:transparent}
.aidraft{border-left:3px solid var(--red)}
.policy{border-left:3px solid var(--blue)}.policy ul{margin:0;padding-left:18px;font-size:15px}
.ai-out{border-left:3px solid var(--pencil)}
.task{background:var(--graphite);color:#fff;padding:12px 14px;margin-bottom:10px}.task p{margin:4px 0 0}
label{display:block;font-weight:600;margin:14px 0 6px}.opt{font-weight:400;color:var(--pencil);font-size:14px}
textarea{width:100%;border:1px solid var(--line-strong);border-radius:2px;padding:10px 12px;font:15px/1.55 var(--sans);resize:vertical;background:var(--paper);color:var(--graphite)}
textarea:focus{outline:2px solid var(--hl);border-color:var(--blue)}
#go{margin-top:12px}.checks-preview{margin-top:14px;color:var(--pencil);font-size:14px}.checks-preview ul{padding-left:18px}

/* graded result = editor markup */
#result{margin-top:6px}
.verdict{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;padding:14px 0 12px;margin:14px 0 6px;border-top:1px solid var(--line-strong)}
.verdict b{display:block;font:400 28px/1.1 var(--serif)}.verdict span{font-size:14px;color:var(--pencil)}
.verdict.pass b{color:var(--blue)}.verdict.fail b{color:var(--red)}
.checks,.hints ul,.mini-result ul{list-style:none;padding:0;margin:0}.checks li,.hints li{padding:5px 0 5px 28px;position:relative;font-size:15px;border-bottom:1px dashed var(--line)}
li.x::before{content:"✗";position:absolute;left:6px;color:var(--red);font-weight:700}li.ok::before{content:"✓";position:absolute;left:6px;color:var(--blue);font-weight:700}
.checks li.x{color:var(--graphite)}.checks li.x{text-decoration:underline wavy rgba(209,35,42,.55);text-underline-offset:4px;text-decoration-thickness:1px}
.feedback{border-left:2px solid var(--red);padding:4px 0 4px 14px;margin:14px 0}.feedback b{font-size:12px;color:var(--red);text-transform:uppercase;letter-spacing:.06em}
.feedback p{margin:4px 0;font:italic 18px/1.35 var(--serif);color:var(--red)}
.judge-sum{background:var(--hl);padding:8px 12px;font-size:15px}
.rubric{width:100%;border-collapse:collapse;margin-top:12px;font-size:14px}.rubric th{font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--pencil);text-align:left;padding:6px;border-bottom:1px solid var(--line-strong)}
.rubric td{border-bottom:1px solid var(--line);padding:7px 6px;vertical-align:top}.r-ok td:nth-child(2){color:var(--blue)}.r-fix td:nth-child(2){color:var(--red)}
.r-fix .note-cell{color:var(--red);font:italic 16px/1.3 var(--serif)}.r-ok .note-cell{color:var(--pencil)}
.hints{margin-top:14px;font-size:14px}.hints b{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--pencil)}
.note.warn{background:var(--hl);border-left:3px solid var(--red);padding:10px 14px;margin-top:12px}

/* teams, pricing, faq */
.teams{padding:64px 32px}.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:16px}.team-grid p{color:var(--pencil)}
.pricing{padding:64px 0;background:var(--graphite);color:#fff}.pricing .sub{color:#C9C9CF}.pricing .section-label{color:#C9C9CF}.pricing a{color:#fff}
.plans{display:grid;grid-template-columns:repeat(2,minmax(0,380px));gap:20px;margin:28px 0}
.plan{background:var(--paper);color:var(--graphite);border:1px solid var(--line);padding:24px;position:relative}.plan.featured{box-shadow:inset 0 4px 0 var(--red)}
.badge{position:absolute;top:-11px;right:16px;background:var(--red);color:#fff;font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px}
.price{font:400 52px/1 var(--serif);margin:6px 0 8px}.price span{font:400 16px var(--sans);color:var(--pencil)}.plan ul{padding-left:18px}
.guarantee{font-size:16px;max-width:820px}.placeholder{background:var(--hl);color:var(--graphite);padding:0 4px}
.checkout-note{background:#2A2A30;border-left:3px solid var(--red);padding:12px 16px;max-width:740px}
.faq{padding:56px 32px}.faq details{background:var(--paper);border:1px solid var(--line);padding:12px 16px;margin:8px 0}.faq summary{font-weight:600;cursor:pointer}
.footer{border-top:1px solid var(--line-strong);padding:24px 0;color:var(--pencil);font-size:14px}.footer-inner{display:flex;align-items:center;gap:10px}

/* refunds page */
.policy-page{max-width:760px;padding:48px 32px}.policy-page h1{font-size:52px;margin-bottom:8px}.policy-page h2{margin-top:32px;font-size:30px}.policy-page ul{padding-left:20px}.policy-page li{margin:6px 0}

@media (max-width:980px){.hero-grid{gap:40px}h1{font-size:52px}}
@media (max-width:860px){
  .wrap{padding:0 22px}h1{font-size:44px;line-height:1.08}h2{font-size:32px}
  .hero{padding:28px 0 32px}.hero-grid,.ex-grid,.skill-grid,.tabs,.team-grid,.plans,.strip{grid-template-columns:1fr}
  .nav-inner{height:64px}.nav nav a:not(.nav-cta){display:none}.nav nav a.nav-cta{padding:12px 20px;font-size:16px}.logo img{height:30px}
  .eyebrow{font-size:13px;margin-top:6px}.lede{font-size:17px}
  .cta-row .btn.primary{display:block;width:100%;text-align:center;padding:16px 18px;font-size:16px}.cta-row .btn.outline{display:none}
  .works{display:none}.strip{gap:14px}.teams,.faq{padding-left:22px;padding-right:22px}
  .hc-markup{grid-template-columns:1fr}.margin-notes{border-left:0;border-top:1px solid var(--red);padding:8px 0 0}
}
/* hero type tuned to Designer's mock */
.hero h1{font-size:68px;line-height:1.02}.redline{white-space:nowrap}.nav nav a.nav-cta{font-weight:600}
@media (max-width:980px){.hero h1{font-size:54px}}
@media (max-width:860px){.hero h1{font-size:50px;line-height:1.06}}
@media (max-width:360px){.hero h1{font-size:42px}}