:root { --bg: #0f1419; --card: #1a2230; --ink: #eef2f7; --muted: #9aa7b8; --accent: #e8a33d; --ok: #43b581; --bad: #e05c5c; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; line-height: 1.6; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: #0b0f14; border-bottom: 1px solid #232d3d; position: sticky; top: 0; z-index: 10; }
.brand { color: var(--ink); font-weight: 700; text-decoration: none; font-size: 1.05rem; }
.topbar nav { display: flex; gap: 12px; align-items: center; }
.topbar a { color: var(--muted); text-decoration: none; }
.topbar a:hover { color: var(--ink); }
.inline { display: inline; margin: 0; }
.linkbtn { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 1rem; padding: 0; }
.linkbtn:hover { color: var(--ink); }
h1 { font-size: 1.7rem; margin: 1.4em 0 .4em; }
h2 { font-size: 1.25rem; margin-top: 1.6em; color: var(--accent); }
.lede { color: var(--muted); font-size: 1.05rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.btn { display: inline-block; background: var(--accent); color: #14100a; font-weight: 700; border: 0; border-radius: 10px; padding: 12px 22px; text-decoration: none; cursor: pointer; font-size: 1rem; }
.btn.big { font-size: 1.1rem; padding: 14px 28px; }
.btn.small { padding: 8px 14px; font-size: .9rem; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid #3a4a63; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 1.4em 0; }
.hero { padding: 2em 0 1em; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 1em 0 2em; }
.card { background: var(--card); border: 1px solid #26334a; border-radius: 12px; padding: 18px; }
.card.link { color: inherit; text-decoration: none; display: block; }
.card.link:hover { border-color: var(--accent); }
.card h3 { margin: .4em 0 .2em; font-size: 1.05rem; }
.card p { margin: .3em 0; font-size: .95rem; }
.card-num { display: inline-block; background: #2a3a55; color: var(--accent); font-weight: 700; border-radius: 8px; padding: 2px 10px; font-size: .85rem; }
.pricing { margin: 2em 0; }
.price-card { background: var(--card); border: 2px solid var(--accent); border-radius: 14px; padding: 24px; max-width: 460px; }
.price { font-size: 1.4rem; font-weight: 800; margin-bottom: .5em; }
.price-card ul { padding-left: 1.2em; }
.steps li { margin-bottom: .8em; }
.form { display: grid; gap: 14px; max-width: 420px; margin: 1em 0; }
.form label { display: grid; gap: 6px; font-weight: 600; }
.form input { padding: 12px; border-radius: 8px; border: 1px solid #3a4a63; background: #0b0f14; color: var(--ink); font-size: 1rem; }
.alert { background: #3a1d1d; border: 1px solid var(--bad); color: #ffb3b3; padding: 12px 16px; border-radius: 10px; }
.ok { background: #123524; border: 1px solid var(--ok); color: #b9f0d4; padding: 12px 16px; border-radius: 10px; }
.panel { background: var(--card); border: 1px solid #26334a; border-radius: 12px; padding: 20px; margin: 1.4em 0; }
.badge { display: inline-block; border-radius: 999px; padding: 3px 12px; font-size: .85rem; font-weight: 700; }
.badge.on { background: #123524; color: #7be3a8; border: 1px solid var(--ok); }
.badge.off { background: #3a1d1d; color: #ffb3b3; border: 1px solid var(--bad); }
.crumbs { margin-top: 1em; }
.crumbs a { color: var(--muted); text-decoration: none; }
.study h2 { margin-top: 2em; }
.study ul { padding-left: 1.3em; }
.study li { margin-bottom: .5em; }
.study .note { background: #2a2410; border-left: 3px solid var(--accent); padding: 10px 14px; border-radius: 0 8px 8px 0; }
.audio-row { display: flex; align-items: center; gap: 12px; background: var(--card); border: 1px solid #26334a; border-radius: 12px; padding: 12px 16px; margin: 1.2em 0; flex-wrap: wrap; }
.audio-row audio { flex: 1; min-width: 220px; }
.quiz { margin: 2.5em 0; border-top: 2px solid #26334a; padding-top: 1em; }
.q { border: 1px solid #26334a; border-radius: 10px; padding: 14px 16px; margin: 0 0 14px; }
.q legend { padding: 0 8px; font-size: 1.02rem; }
.opt { display: block; padding: 8px 10px; margin: 6px 0; background: #0b0f14; border-radius: 8px; cursor: pointer; }
.opt:hover { background: #141c29; }
.opt input { margin-right: 8px; }
.q.correct { border-color: var(--ok); }
.q.wrong { border-color: var(--bad); }
.explain { font-size: .92rem; color: var(--muted); margin: .6em 0 0; }
.result { margin-top: 1.4em; padding: 18px; border-radius: 12px; font-size: 1.1rem; font-weight: 700; }
.result.pass { background: #123524; border: 1px solid var(--ok); }
.result.fail { background: #3a1d1d; border: 1px solid var(--bad); }
.pass { color: #7be3a8; font-weight: 700; }
.tryagain { color: var(--accent); font-weight: 700; }
.foot { margin: 3em auto 2em; color: var(--muted); font-size: .85rem; border-top: 1px solid #232d3d; padding-top: 1.2em; }
@media (max-width: 560px) { h1 { font-size: 1.45rem; } .topbar nav { gap: 8px; font-size: .9rem; } }