/* Free course (/learn/aeo), redesigned 2026-10-15 as a course app: rounded cards, progress rings, sidebar, quiz cards.
   Site tokens only; dark and light both. The certificate is a deliberate dark island in both themes. */
.lc { --r: 14px; --soft: rgba(0,232,122,.10); --shadow: 0 1px 0 rgba(0,0,0,.25), 0 18px 40px -26px rgba(0,0,0,.85); --glow: rgba(0,232,122,.16);
  max-width: 1240px; margin: 0 auto; padding: 118px 32px 60px; position: relative; }
[data-theme="light"] .lc { --soft: rgba(0,150,72,.09); --shadow: 0 1px 0 rgba(40,35,25,.04), 0 16px 34px -22px rgba(60,50,30,.30); --glow: rgba(0,150,72,.13); }
.lc * { box-sizing: border-box; }
.lc [hidden] { display: none !important; }
.lc .crumb { margin-bottom: 24px; display: inline-block; }
.lc h1 { font-family: var(--serif); font-weight: 900; color: var(--fg); }
.lc h1 .grad, .lc .grad { background: linear-gradient(90deg, var(--accent1), var(--accent2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.lc .lede { font-family: var(--mono); font-size: 14.5px; line-height: 1.8; color: var(--fg-mid); }
.lc .lede strong { color: var(--fg); font-weight: 500; }
.lc-k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 2.5px; text-transform: uppercase; color: var(--accent1); }
.lc-pill { display: inline-flex; align-items: center; gap: 8px; height: 28px; padding: 0 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--fg-mid); font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.6px; text-transform: uppercase; }
.lc-pill.g { background: var(--soft); border-color: transparent; color: var(--accent1); }
.lc-pill i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent1); box-shadow: 0 0 0 4px var(--soft); }
.lc-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 46px; padding: 0 20px; border-radius: 11px; border: 1px solid var(--border); background: var(--bg); color: var(--fg); font-family: var(--mono); font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; text-decoration: none; cursor: pointer; -webkit-appearance: none; appearance: none; transition: border-color var(--m-instant, .2s), transform var(--m-instant, .2s), opacity var(--m-instant, .2s); }
.lc-btn:hover { border-color: var(--accent1); transform: translateY(-1px); }
.lc-btn.pri { background: linear-gradient(90deg, var(--accent1), var(--accent2)); border-color: transparent; color: #04140B; font-weight: 500; }
.lc-btn.sm { height: 36px; padding: 0 14px; font-size: 10.5px; }
.lc-btn[disabled] { opacity: .45; cursor: default; transform: none; }
.lc-card { border: 1px solid var(--border); border-radius: var(--r); background: var(--card-bg); box-shadow: var(--shadow); padding: 26px; }
.lc a.lc-in { color: var(--accent1); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.lc-ico { width: 46px; height: 46px; border-radius: 13px; display: inline-grid; place-items: center; background: var(--soft); color: var(--accent1); flex: none; }
.lc-ico svg { width: 23px; height: 23px; }
.lc-ico.sm { width: 36px; height: 36px; border-radius: 10px; }
.lc-ico.sm svg { width: 18px; height: 18px; }
/* progress ring */
.lc-ring { width: 64px; height: 64px; transform: rotate(-90deg); flex: none; }
.lc-ring circle { fill: none; stroke-width: 10; }
.lc-ring .bg { stroke: var(--surface); }
.lc-ring .fg { stroke: var(--accent1); stroke-linecap: round; transition: stroke-dasharray var(--m-considered, .65s) cubic-bezier(.2,.8,.2,1); }

/* ── course page ─────────────────────────────────────── */
.lc-hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 40px; align-items: center; border: 1px solid var(--border); border-radius: 22px; padding: 56px; overflow: hidden;
  background: radial-gradient(ellipse 60% 70% at 100% 0%, var(--glow), transparent 60%), radial-gradient(ellipse 50% 60% at 0% 100%, rgba(0,194,255,.06), transparent 60%), var(--card-bg); box-shadow: var(--shadow); }
.lc-hero h1 { font-size: clamp(42px, 6vw, 80px); line-height: .98; letter-spacing: -2.4px; margin: 20px 0 20px; }
.lc-hero .lede { max-width: 560px; margin: 0 0 28px; }
.lc-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.lc-facts { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 26px; }
.lc-facts li { font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--fg-subtle); }
.lc-facts b { display: block; font-family: var(--serif); font-size: 32px; letter-spacing: -.5px; text-transform: none; color: var(--fg); line-height: 1.05; }
.lc-hero-r { position: relative; display: flex; flex-direction: column; gap: 18px; }
.lc-you { position: relative; z-index: 2; border: 1px solid var(--border); border-radius: 16px; background: var(--bg); box-shadow: var(--shadow); padding: 20px; }
.lc-you-top { display: flex; align-items: center; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.lc-you-top small, .lc-you-next small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 4px; }
.lc-you-top b { display: block; font-family: var(--serif); font-size: 22px; }
.lc-you-left { display: block; margin-top: 2px; font-family: var(--mono); font-size: 11.5px; color: var(--fg-mid); }
.lc-you-next { display: grid; grid-template-columns: 1fr auto; gap: 4px 14px; align-items: center; padding-top: 16px; }
.lc-you-next small { grid-column: 1 / -1; margin: 0; }
.lc-you-next b { font-size: 14px; line-height: 1.45; font-weight: 500; }
.lc-mini { position: relative; z-index: 1; transform: rotate(-3deg) translateX(18px); margin: -8px 0 0; filter: drop-shadow(0 26px 40px rgba(0,0,0,.45)); }
.lc-mini .cert-in { padding: 6% 7%; }
.lc-sec { margin-top: 88px; }
.lc-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; margin-bottom: 24px; }
.lc-head h2 { font-family: var(--serif); font-size: clamp(30px, 3.6vw, 44px); letter-spacing: -1px; line-height: 1.05; margin: 10px 0 0; color: var(--fg); }
.lc-head p { margin: 0; max-width: 460px; font-family: var(--mono); font-size: 13px; line-height: 1.75; color: var(--fg-mid); }
.lc-path { list-style: none; padding: 0; margin: 0; position: relative; }
.lc-path::before { content: ''; position: absolute; left: 11px; top: 26px; bottom: 26px; width: 2px; background: linear-gradient(var(--accent1), var(--accent2)); opacity: .35; }
.lc-step { position: relative; padding-left: 44px; margin: 0 0 12px; }
.lc-node { position: absolute; left: 4px; top: 30px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 2px solid var(--border); }
.lc-step.done .lc-node { background: var(--accent1); border-color: var(--accent1); }
.lc-step.next .lc-node { border-color: var(--accent1); box-shadow: 0 0 0 5px var(--soft); }
.lc-lcard { display: flex; gap: 18px; align-items: center; padding: 20px 22px; border: 1px solid var(--border); border-radius: var(--r); background: var(--card-bg); box-shadow: var(--shadow); color: var(--fg); text-decoration: none; transition: border-color var(--m-instant, .2s), transform var(--m-instant, .2s); }
.lc-lcard:hover { border-color: var(--accent1); transform: translateX(3px); }
.lc-lt { flex: 1; min-width: 0; }
.lc-lt small { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 5px; }
.lc-lt b { display: block; font-family: var(--serif); font-size: 20px; line-height: 1.25; font-weight: 700; margin-bottom: 5px; }
.lc-lt i { display: block; font-style: normal; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: var(--fg-mid); }
.lc-done { display: none; flex: none; font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent1); background: var(--soft); border-radius: 999px; padding: 5px 10px; }
.lc-step.done .lc-done { display: inline-block; }
.lc-step.ex .lc-lcard { background: radial-gradient(ellipse 60% 120% at 100% 50%, var(--glow), transparent 70%), var(--card-bg); }
.lc-outs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.lc-out { border: 1px solid var(--border); border-radius: var(--r); background: var(--card-bg); box-shadow: var(--shadow); padding: 22px; }
.lc-out .ck { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); color: var(--accent1); margin-bottom: 14px; }
.lc-out .ck svg { width: 16px; height: 16px; }
.lc-out b { display: block; font-family: var(--serif); font-size: 18px; line-height: 1.3; margin-bottom: 8px; color: var(--fg); }
.lc-out span { font-family: var(--mono); font-size: 12.5px; line-height: 1.65; color: var(--fg-mid); }
.lc-certgrid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 22px; align-items: center; }
.lc-bigcert { margin: 0; filter: drop-shadow(0 30px 50px rgba(0,0,0,.4)); }
.lc-profile { border: 1px solid var(--border); border-radius: 16px; background: var(--card-bg); box-shadow: var(--shadow); padding: 20px; }
.lc-profile > small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 1.8px; text-transform: uppercase; color: var(--fg-subtle); padding-bottom: 14px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.lc-pr { display: flex; gap: 14px; }
.lc-pr-logo { width: 48px; height: 48px; border-radius: 10px; flex: none; display: block; object-fit: cover; box-shadow: 0 0 0 1px var(--border); }
.lc-pr b { display: block; font-size: 15px; font-weight: 600; color: var(--fg); }
.lc-pr span { display: block; font-size: 13px; color: var(--fg-mid); }
.lc-pr .m { font-size: 12px; color: var(--fg-subtle); margin-top: 2px; }
.lc-pr-btn { display: inline-block !important; margin-top: 12px; padding: 6px 14px; border: 1px solid var(--fg-subtle); border-radius: 999px; font-size: 12.5px !important; font-weight: 600; color: var(--fg) !important; }
.lc-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.lc-stats > div { border: 1px solid var(--border); border-radius: var(--r); background: var(--card-bg); box-shadow: var(--shadow); padding: 26px 24px; }
.lc-stats b { display: block; font-family: var(--serif); font-weight: 900; font-size: 46px; letter-spacing: -1.5px; line-height: 1; margin-bottom: 12px; background: linear-gradient(90deg, var(--accent1), var(--accent2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.lc-stats span { font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: var(--fg-mid); }
.lc-faqs { display: flex; flex-direction: column; gap: 10px; max-width: 900px; }
.lc-faq { border: 1px solid var(--border); border-radius: 12px; background: var(--card-bg); padding: 0 20px; }
.lc-faq summary { list-style: none; cursor: pointer; padding: 18px 30px 18px 0; position: relative; font-family: var(--serif); font-size: 18px; color: var(--fg); }
.lc-faq summary::-webkit-details-marker { display: none; }
.lc-faq summary::after { content: '+'; position: absolute; right: 0; top: 14px; font-family: var(--mono); font-size: 20px; color: var(--accent1); transition: transform var(--m-instant, .2s); }
.lc-faq[open] summary::after { transform: rotate(45deg); }
.lc-faq p { margin: 0 0 18px; font-family: var(--mono); font-size: 13px; line-height: 1.75; color: var(--fg-mid); }
.lc-final { margin-top: 88px; text-align: center; border: 1px solid var(--border); border-radius: 22px; padding: 64px 32px; background: radial-gradient(ellipse 60% 100% at 50% 100%, var(--glow), transparent 70%), var(--card-bg); box-shadow: var(--shadow); }
.lc-final h2 { font-family: var(--serif); font-size: clamp(26px, 3.2vw, 38px); letter-spacing: -.8px; line-height: 1.15; max-width: 720px; margin: 0 auto 26px; color: var(--fg); }

/* ── lesson layout ───────────────────────────────────── */
.lc-read { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 1001; pointer-events: none; }
.lc-read i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent1), var(--accent2)); }
.lc-layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 28px; align-items: start; }
.lc-side { position: sticky; top: 96px; }
.lc-sidecard { border: 1px solid var(--border); border-radius: 16px; background: var(--card-bg); box-shadow: var(--shadow); padding: 18px; }
.lc-brand { display: block; font-family: var(--serif); font-size: 17px; font-weight: 700; line-height: 1.25; color: var(--fg); text-decoration: none; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.lc-brand small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent1); font-weight: 400; margin-bottom: 4px; }
.lc-prog { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.lc-prog .lc-ring { width: 48px; height: 48px; }
.lc-prog b { display: block; font-size: 14px; color: var(--fg); font-family: var(--mono); font-weight: 500; }
.lc-prog small { display: block; font-family: var(--mono); font-size: 11px; color: var(--fg-subtle); margin-top: 2px; }
.lc-nav { list-style: none; padding: 0; margin: 10px 0 0; }
.lc-nav li { margin: 0; }
.lc-nl { display: flex; gap: 12px; align-items: flex-start; padding: 9px 8px; border-radius: 9px; color: var(--fg-mid); text-decoration: none; position: relative; }
.lc-nl:hover { background: var(--surface); color: var(--fg); }
.lc-nl .d { width: 14px; height: 14px; margin-top: 3px; border-radius: 50%; border: 2px solid var(--border); flex: none; background: var(--bg); }
.lc-nl.done .d { background: var(--accent1); border-color: var(--accent1); }
.lc-nl.on { background: var(--soft); color: var(--fg); }
.lc-nl.on .d { border-color: var(--accent1); box-shadow: 0 0 0 4px var(--soft); }
.lc-nl .t { font-size: 13.5px; line-height: 1.35; font-family: var(--mono); }
.lc-nl small { display: block; font-size: 10px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 2px; }
.lc-main { min-width: 0; border: 1px solid var(--border); border-radius: 18px; background: var(--card-bg); box-shadow: var(--shadow); padding: 44px 52px 40px; }
.lc-lh { padding-bottom: 28px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.lc-lh .lc-ico { margin-bottom: 18px; display: grid; }
.lc-lh h1 { font-size: clamp(30px, 3.6vw, 46px); line-height: 1.08; letter-spacing: -1.2px; margin: 16px 0 16px; }
.lc-lh .lede { margin: 0; max-width: 720px; }
.lc-body { max-width: 720px; }
.lc-body h2 { font-family: var(--serif); font-size: 26px; letter-spacing: -.5px; line-height: 1.25; margin: 40px 0 14px; color: var(--fg); }
.lc-body p { font-family: var(--mono); font-size: 14px; line-height: 1.9; color: var(--fg-mid); margin: 0 0 16px; }
.lc-body p strong, .lc-body p em { color: var(--fg); }
.lc-body code { font-family: var(--mono); font-size: 12.5px; color: var(--fg); background: var(--surface); border: 1px solid var(--border); padding: 1px 6px; border-radius: 5px; }
.lc-body pre { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; overflow-x: auto; margin: 0 0 20px; }
.lc-body pre code { background: none; border: 0; padding: 0; font-size: 12.5px; line-height: 1.7; color: var(--fg-mid); white-space: pre; }
.lc-task { margin: 40px 0 0; border: 1px solid color-mix(in srgb, var(--accent1) 40%, var(--border)); border-radius: 16px; padding: 22px 24px; background: radial-gradient(ellipse 70% 120% at 100% 0%, var(--glow), transparent 70%), var(--bg); }
.lc-task-h { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.lc-task-h > div { flex: 1; }
.lc-task-h small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent1); }
.lc-task-h b { font-family: var(--serif); font-size: 20px; color: var(--fg); }
.lc-task p { margin: 0; font-family: var(--mono); font-size: 13.5px; line-height: 1.85; color: var(--fg-mid); }
.lc-task p a { color: var(--accent1); }
.lc-task code { font-family: var(--mono); font-size: 12px; color: var(--fg); background: var(--surface); border: 1px solid var(--border); padding: 2px 6px; border-radius: 5px; word-break: break-all; }
.lc-mark { height: 34px; padding: 0 14px; border-radius: 9px; border: 1px solid var(--border); background: transparent; color: var(--fg-mid); font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.2px; text-transform: uppercase; cursor: pointer; white-space: nowrap; }
.lc-mark:hover { border-color: var(--accent1); color: var(--fg); }
.lc-mark.on { background: var(--accent1); border-color: var(--accent1); color: #04140B; }
.lc-quiz { margin-top: 44px; }
.lc-quiz-h { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px; }
.lc-quiz-h h2 { font-family: var(--serif); font-size: 26px; margin: 0; color: var(--fg); }
.lc-score { font-family: var(--mono); font-size: 12px; color: var(--fg-subtle); }
.lc-q { border: 1px solid var(--border); border-radius: 14px; background: var(--bg); padding: 20px; margin-bottom: 12px; }
.lc-qh { display: flex; gap: 14px; margin-bottom: 14px; }
.lc-qh em { font-style: normal; font-family: var(--mono); font-size: 11px; color: var(--accent1); padding-top: 3px; flex: none; }
.lc-qh p { margin: 0; font-size: 15.5px; line-height: 1.5; color: var(--fg); font-family: var(--mono); }
.lc-opts { display: grid; gap: 8px; }
.lc-opt { display: flex; align-items: center; gap: 12px; width: 100%; text-align: left; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--card-bg); color: var(--fg-mid); font-family: var(--mono); font-size: 13.5px; line-height: 1.45; cursor: pointer; transition: border-color var(--m-instant, .2s), background var(--m-instant, .2s), color var(--m-instant, .2s); }
.lc-opt:hover { border-color: var(--fg-subtle); color: var(--fg); }
.lc-opt .k { width: 26px; height: 26px; border-radius: 7px; display: grid; place-items: center; border: 1px solid var(--border); font-size: 11px; color: var(--fg-subtle); flex: none; }
.lc-opt.right { border-color: var(--accent1); background: var(--soft); color: var(--fg); }
.lc-opt.right .k { background: var(--accent1); border-color: var(--accent1); color: #04140B; }
.lc-opt.wrong { border-color: var(--warn); color: var(--fg); }
.lc-opt.wrong .k { background: var(--warn); border-color: var(--warn); color: #fff; }
.lc-q.answered .lc-opt { cursor: default; }
.lc-why { margin: 14px 0 0; font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--fg-mid); }
.lc-why b { color: var(--accent1); }
.lc-why b.no { color: var(--warn); }
.lc-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 44px; }
.lc-pncard { display: block; padding: 18px 20px; border: 1px solid var(--border); border-radius: 14px; color: var(--fg); text-decoration: none; transition: border-color var(--m-instant, .2s), transform var(--m-instant, .2s); }
.lc-pncard:hover { border-color: var(--accent1); }
.lc-pncard.nx { text-align: right; background: radial-gradient(ellipse 70% 140% at 100% 50%, var(--glow), transparent 70%); }
.lc-pncard small { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 6px; }
.lc-pncard b { font-family: var(--serif); font-size: 19px; }

/* ── exam ────────────────────────────────────────────── */
.lc-xbar { position: sticky; top: 74px; z-index: 5; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 14px 0 16px; margin: 18px 0 8px; background: var(--card-bg); border-bottom: 1px solid var(--border); }
.lc-xcount { font-family: var(--mono); font-size: 12px; color: var(--fg-mid); white-space: nowrap; }
.lc-xcount b { color: var(--fg); }
.lc-xtrack { flex: 1; min-width: 120px; height: 6px; border-radius: 6px; background: var(--surface); overflow: hidden; }
.lc-xtrack i { display: block; height: 100%; width: 0; border-radius: 6px; background: linear-gradient(90deg, var(--accent1), var(--accent2)); transition: width var(--m-considered, .65s) cubic-bezier(.2,.8,.2,1); }
.lc-xdots { display: flex; gap: 4px; width: 100%; }
.lc-xdots button { flex: 1; height: 6px; border: 0; padding: 0; border-radius: 3px; background: var(--surface); cursor: pointer; }
.lc-xdots button.a { background: color-mix(in srgb, var(--accent1) 55%, var(--surface)); }
.lc-xdots button.c { background: var(--accent1); box-shadow: 0 0 0 2px var(--soft); }
.lc-xq { border: 0; padding: 0; margin: 24px 0 0; min-width: 0; }
.lc-xq legend { padding: 0; margin: 0 0 18px; font-family: var(--serif); font-size: clamp(22px, 2.4vw, 28px); line-height: 1.3; color: var(--fg); }
.lc-xq legend em { display: block; font-style: normal; font-family: var(--mono); font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--accent1); margin-bottom: 10px; }
.lc-xq .lc-opt input { position: absolute; opacity: 0; pointer-events: none; }
.lc-xq .lc-opt { position: relative; padding: 15px 16px; font-size: 14px; }
.lc-xq .lc-opt:has(input:checked) { border-color: var(--accent1); background: var(--soft); color: var(--fg); }
.lc-xq .lc-opt:has(input:checked) .k { background: var(--accent1); border-color: var(--accent1); color: #04140B; }
.lc-xq .lc-opt:has(input:focus-visible) { outline: 2px solid var(--accent1); outline-offset: 2px; }
.lc-xq.miss legend em { color: var(--amber); }
.lc-xnav { display: flex; justify-content: space-between; gap: 10px; margin-top: 26px; }
.lc-exam.stepper .lc-xq { display: none; }
.lc-exam.stepper .lc-xq.cur { display: block; animation: lcIn var(--m-considered, .65s) cubic-bezier(.2,.8,.2,1); }
@keyframes lcIn { from { opacity: 0; transform: translateY(8px); } }
.lc-exam.stepper .cert-form { display: none; }
.lc-exam.stepper.at-form .cert-form { display: block; animation: lcIn var(--m-considered, .65s) both; }
.lc-exam.stepper.at-form .lc-xnav:not(.end), .lc-exam.stepper.at-form .lc-xq { display: none !important; }
.lc-exam:not(.stepper) .lc-xnav:not(.end), .lc-exam:not(.stepper) .lc-xdots { display: none; }
.lc-exam.done-state .lc-xbar, .lc-exam.done-state .lc-xnav, .lc-exam.done-state .lc-xq, .lc-exam.done-state .cert-form { display: none !important; }
.cert-form { margin-top: 30px; }
.cert-form h2 { font-family: var(--serif); font-size: 28px; margin: 8px 0 10px; color: var(--fg); }
.cert-form p { font-family: var(--mono); font-size: 13px; line-height: 1.75; color: var(--fg-mid); margin: 0 0 20px; max-width: 620px; }
.fld { display: block; margin: 0 0 16px; }
.fld span { display: block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--fg-subtle); margin-bottom: 8px; }
.fld input { width: 100%; max-width: 480px; font-family: var(--mono); font-size: 16px; padding: 13px 15px; border-radius: 10px; background: var(--bg); color: var(--fg); border: 1px solid var(--border); }
.fld input:focus { border-color: var(--accent1); outline: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.exam-msg { margin-top: 16px; font-family: var(--mono); font-size: 13px; line-height: 1.6; color: var(--fg-mid); }
.exam-msg.bad { color: var(--warn); }
.lc-result { margin-top: 26px; display: grid; grid-template-columns: auto 1fr; gap: 30px; align-items: center; }
.lc-res-ring { position: relative; width: 150px; height: 150px; }
.lc-res-ring .lc-ring { width: 150px; height: 150px; }
.lc-res-ring .lc-ring .fg { stroke: var(--amber); }
.lc-res-ring b { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--serif); font-size: 46px; color: var(--fg); }
.lc-result h2 { font-family: var(--serif); font-size: 28px; margin: 8px 0 10px; color: var(--fg); }
.lc-result p { font-family: var(--mono); font-size: 13px; color: var(--fg-mid); margin: 0 0 10px; }
.lc-revisit { list-style: none; padding: 0; margin: 0 0 18px; }
.lc-revisit li { margin: 0 0 6px; }
.lc-revisit a { font-family: var(--mono); font-size: 13px; color: var(--accent1); }

/* ── certificate ─────────────────────────────────────── */
.cert { margin: 26px 0 24px; }
.cert-in { position: relative; aspect-ratio: 1.414 / 1; max-width: 100%; background: #0B0D0C; color: #F2F2EE; border: 1px solid #2a2a2a; border-radius: 6px; padding: 6% 7%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; overflow: hidden; }
.cert-in::before { content: ''; position: absolute; inset: 3%; border: 1px solid #1f2a24; pointer-events: none; }
.cert-in::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 45%; background: radial-gradient(ellipse 60% 100% at 50% 120%, rgba(0,232,122,.22), transparent 65%); pointer-events: none; }
.cert-brand { font-family: var(--serif); font-weight: 900; font-size: clamp(14px, 2.2vw, 26px); }
.cert-brand .z { color: #00E87A; font-family: var(--mono); font-weight: 400; font-size: .8em; }
.cert-k { margin-top: 3%; font-family: var(--mono); font-size: clamp(7px, 1vw, 12px); letter-spacing: 4px; text-transform: uppercase; color: #00E87A; }
.cert-t { font-family: var(--serif); font-weight: 900; font-size: clamp(16px, 3.4vw, 40px); letter-spacing: -1px; margin: 1.5% 0 3%; }
.cert-p { font-family: var(--mono); font-size: clamp(8px, 1.2vw, 14px); line-height: 1.6; color: #B8B4AA; max-width: 560px; }
.cert-p i { color: #F2F2EE; }
.cert-p b { color: #00E87A; font-weight: 500; }
.cert-n { font-family: var(--serif); font-style: italic; font-size: clamp(18px, 3.8vw, 46px); margin: 2% 0; padding: 0 6% 1.5%; border-bottom: 1px solid #333; min-width: 50%; }
.cert-meta { margin-top: 4%; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 24px; font-family: var(--mono); font-size: clamp(6px, .9vw, 11px); letter-spacing: 1.5px; text-transform: uppercase; color: #7A766C; }
.cert-meta b { color: #B8B4AA; font-weight: 500; }
.cert-mark { position: absolute; right: 5%; bottom: 7%; width: clamp(20px, 4vw, 44px); height: auto; z-index: 1; }
.lc-mini .cert-p, .lc-mini .cert-meta { display: none; }
.lc-mini .cert-n { font-size: clamp(18px, 2.4vw, 28px); }
.lc-mini .cert-t { font-size: clamp(16px, 2.2vw, 26px); }
.cert .cert-missing { display: none; }
.cert[data-state="missing"] .cert-in { display: none; }
.cert[data-state="missing"] .cert-missing { display: block; font-family: var(--mono); font-size: 14px; color: var(--fg-mid); }
.cert[data-state="loading"] .cert-in { opacity: .35; }
.lc-certpage { max-width: 1000px; }
.lc-cert-hello h1 { font-size: clamp(34px, 5vw, 60px); letter-spacing: -1.5px; line-height: 1.05; margin: 18px 0 12px; }
.lc-cert-hello .lede { margin: 0; }
.lc-certpage .cert { filter: drop-shadow(0 30px 50px rgba(0,0,0,.4)); }
.cert-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.cert-note { font-family: var(--mono); font-size: 12.5px; color: var(--fg-subtle); display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.lc-verified { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; background: var(--soft); color: var(--accent1); }
.lc-verified::before { content: '\2713'; }
.lc-confetti { position: fixed; inset: 0; width: 100vw; height: 100vh; pointer-events: none; z-index: 1002; }

@media (max-width: 1000px) {
  .lc-hero { grid-template-columns: 1fr; padding: 40px 32px; }
  .lc-mini { display: none; }
  .lc-layout { grid-template-columns: 1fr; }
  .lc-side { position: static; }
  .lc-nav { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; }
  .lc-outs, .lc-stats { grid-template-columns: 1fr 1fr; }
  .lc-certgrid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .lc { padding: 96px 16px 40px; }
  .lc-hero { padding: 30px 20px; border-radius: 18px; }
  .lc-main { padding: 26px 20px; border-radius: 16px; }
  .lc-outs, .lc-stats, .lc-pn { grid-template-columns: 1fr; }
  .lc-nav { grid-template-columns: 1fr; }
  .lc-lcard { flex-wrap: wrap; padding: 16px; }
  .lc-lcard .lc-ico { width: 38px; height: 38px; }
  .lc-task-h { flex-wrap: wrap; }
  .lc-result { grid-template-columns: 1fr; justify-items: start; }
  .lc-xbar { top: 64px; }
}
@media (prefers-reduced-motion: reduce) { .lc-exam.stepper .lc-xq.cur, .lc-exam.stepper.at-form .cert-form { animation: none; } .lc-ring .fg { transition: none; } }
@media print {
  @page { size: A4 landscape; margin: 0; }
  body * { visibility: hidden !important; }
  #cert, #cert * { visibility: visible !important; }
  #cert { position: fixed; inset: 0; margin: 0; filter: none; }
  #cert .cert-in { width: 100vw; height: 100vh; aspect-ratio: auto; border: 0; border-radius: 0; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}
/* clear the fixed footer bar, as .page-wrap does */
.lc { padding-bottom: 150px; }
@media (max-width: 640px) { .lc { padding-bottom: 130px; } }
/* nav.js gives [data-magnetic] display:inline-block after this file loads; keep the course buttons flex-centred */
.lc .lc-btn[data-magnetic] { display: inline-flex; align-items: center; justify-content: center; text-align: center; line-height: 1.2; white-space: nowrap; }
@media (max-width: 420px) { .lc .lc-btn { white-space: normal; height: auto; min-height: 46px; padding-top: 10px; padding-bottom: 10px; } }

/* lesson video and the starter kit (2026-10-15) */
.lc-video { margin: 28px 0 10px; }
.lc-watch { display: flex; align-items: center; gap: 8px; margin: -16px 0 26px; font-family: var(--mono); font-size: 12px; color: var(--fg-subtle); }
.lc-watch svg { width: 18px; height: 18px; color: var(--accent1); flex: none; }
.lc-watch a { color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--border); }
.lc-watch a:hover { color: var(--accent1); border-color: var(--accent1); }
.lc-video .yt-lite { border-radius: 14px; box-shadow: var(--shadow); }
.lc-video figcaption { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; font-family: var(--mono); font-size: 11.5px; color: var(--fg-subtle); }
.lc-video figcaption a { color: var(--fg-subtle); text-decoration: none; border-bottom: 1px solid var(--border); }
.lc-video figcaption a:hover { color: var(--accent1); }
.lc-kit { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.lc-kitem { display: block; border: 1px solid var(--border); border-radius: var(--r); background: var(--card-bg); box-shadow: var(--shadow); padding: 20px; color: var(--fg); text-decoration: none; transition: border-color var(--m-instant, .2s), transform var(--m-instant, .2s); }
a.lc-kitem:hover { border-color: var(--accent1); transform: translateY(-2px); }
.lc-kitem.all { background: radial-gradient(ellipse 70% 120% at 100% 0%, var(--glow), transparent 70%), var(--card-bg); }
.lc-kt { display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: 1.4px; padding: 3px 8px; border-radius: 6px; background: var(--soft); color: var(--accent1); margin-bottom: 12px; }
.lc-kitem b { display: block; font-family: var(--serif); font-size: 19px; margin-bottom: 6px; }
.lc-kitem i { display: block; font-style: normal; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: var(--fg-mid); }
.lc-kit-preview { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.lc-kit-preview .lc-kitem { position: relative; padding: 18px; }
.lc-kit-preview .lc-kitem::after { content: ''; position: absolute; top: 18px; right: 16px; width: 14px; height: 14px; background: var(--fg-subtle); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='11' width='14' height='9' rx='2'/%3E%3Cpath d='M8 11V8a4 4 0 0 1 8 0v3'/%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='11' width='14' height='9' rx='2'/%3E%3Cpath d='M8 11V8a4 4 0 0 1 8 0v3'/%3E%3C/svg%3E") center / contain no-repeat; }
.lc-kit-preview .lc-kitem b { font-size: 16px; margin: 0; }
.lc-invite .lc-final { margin-top: 0; }
@media (max-width: 1000px) { .lc-kit, .lc-kit-preview { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .lc-kit, .lc-kit-preview { grid-template-columns: 1fr; } }