:root{
  --bg:#0d1210;--panel:#161d19;--panel2:#1c2420;--ink:#e7f1e5;--muted:#8fa392;--line:#2b362f;
  --kiwi:#5fbf3d;--kiwi-dark:#8fe06a;--gold:#e0a63a;
  --good:#5fd37a;--bad:#ff6f5e;--soon-bg:#3a2f14;--soon-ink:#e0b35c;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
h1,h2,h3{font-weight:800;line-height:1.25;margin:0 0 10px;letter-spacing:-.01em}
h1{font-size:1.9rem}
h2{font-size:1.35rem;margin-top:26px}
h3{font-size:1.1rem}
a{color:var(--kiwi-dark);text-decoration:none}
@media (hover:hover){ a:hover{text-decoration:underline} }
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:var(--panel)}
.topbar{max-width:880px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.brand{font-weight:800;font-size:1.25rem;color:var(--kiwi-dark)}
nav a{margin-left:16px;font-size:.95rem;color:var(--ink);-webkit-tap-highlight-color:transparent}
.btn{display:inline-block;background:var(--kiwi);color:#07140a;padding:10px 18px;border-radius:8px;font-weight:700;border:none;cursor:pointer;font-size:1rem;transition:background .15s,transform .1s;min-height:44px;line-height:24px;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}
@media (hover:hover){ .btn:hover{background:var(--kiwi-dark);text-decoration:none} }
.btn:active{transform:scale(.97)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.btn.sm{padding:10px 14px;font-size:.9rem;min-height:44px;line-height:1.4;display:inline-flex;align-items:center}
a:focus-visible,.btn:focus-visible,button:focus-visible{outline:2px solid var(--kiwi-dark);outline-offset:2px;border-radius:4px}
nav a,footer a{display:inline-flex;align-items:center;min-height:44px}
::selection{background:var(--kiwi);color:#07140a}
::-webkit-scrollbar{width:12px;height:12px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:6px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}
html{scrollbar-color:var(--line) var(--bg)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;margin:16px 0;overflow-wrap:break-word}
.sub{color:var(--muted)}
.stat-label{color:var(--muted);font-weight:700;font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;margin:0}
input,select,textarea{font-size:1rem;padding:10px;border:1px solid var(--line);border-radius:8px;width:100%;margin:6px 0;background:var(--panel2);color:var(--ink);font-family:inherit;transition:border-color .15s}
input:focus-visible,select:focus-visible,textarea:focus-visible{border-color:var(--kiwi-dark)}
input::placeholder,textarea::placeholder{color:var(--muted)}
input[type="checkbox"],input[type="radio"]{accent-color:var(--kiwi)}
form{max-width:420px}
/* Explicit caret instead of the browser's native <summary> marker - that
   marker relies on display:list-item, so a summary styled with its own
   display:flex (needed to lay out a name + label on one row) silently
   loses it in Chromium, leaving no visible toggle indicator at all. */
summary{list-style:none;cursor:pointer;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}
summary::-webkit-details-marker{display:none}
.caret{display:inline-block;color:inherit;transition:transform .15s;flex-shrink:0}
details[open]>summary .caret{transform:rotate(90deg)}
footer{color:var(--muted);font-size:.85rem;padding:30px 0;text-align:center}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line)}
.badge{display:inline-block;background:var(--line);color:var(--muted);border-radius:6px;padding:2px 8px;font-size:.75rem;font-weight:600}
.badge.soon{background:var(--soon-bg);color:var(--soon-ink)}
.badge.included{background:rgba(95,191,61,.18);color:var(--kiwi-dark)}
.card-included{border-color:var(--kiwi);background:var(--panel2)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.qbox{font-size:2.6rem;font-weight:800;text-align:center;margin:24px 0;line-height:1.3}
@media (max-width:600px){.qbox{font-size:2rem}}
.trust-strip{display:flex;align-items:center;gap:12px;max-width:560px;margin:34px auto 0;padding:14px 18px;border:1px solid var(--line);border-radius:10px;background:var(--panel);font-size:.95rem}
.demo-panel{max-width:440px;margin:20px auto 0;padding:22px;border:1px solid var(--kiwi);border-radius:14px;background:var(--panel);text-align:center;box-shadow:0 0 0 4px rgba(95,191,61,.08)}
.demo-tag{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);background:var(--panel2);border-radius:6px;padding:3px 9px}
.demo-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.demo-tab{background:var(--panel2);color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:7px 16px;font-weight:700;font-size:.85rem;cursor:pointer;min-height:36px;transition:background .15s,color .15s,border-color .15s}
@media (hover:hover){ .demo-tab:hover{border-color:var(--kiwi-dark)} }
.demo-tab[aria-pressed="true"]{background:var(--kiwi);color:#07140a;border-color:var(--kiwi)}
.demo-options{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:4px}
.demo-option{background:var(--panel2);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:12px 10px;font-size:.98rem;font-weight:600;cursor:pointer;min-height:44px;transition:background .15s,border-color .15s}
.demo-option:hover:not(:disabled){border-color:var(--kiwi-dark)}
.demo-option:disabled{cursor:default}
.demo-option.correct{background:rgba(95,211,122,.15);border-color:var(--good);color:var(--good)}
.demo-option.incorrect{background:rgba(255,111,94,.15);border-color:var(--bad);color:var(--bad)}
.demo-feedback{min-height:1.4em;margin-top:14px;font-size:.92rem;font-weight:700}
.demo-feedback.good{color:var(--good)}
.demo-feedback.bad{color:var(--bad)}
@media (max-width:420px){.demo-options{grid-template-columns:1fr}}
.auth-card{max-width:420px;margin:40px auto}
.field-label{display:block;font-size:.8rem;margin:10px 0 4px;color:var(--muted)}
.field-label:first-of-type{margin-top:0}
.field-hint{font-size:.78rem;color:var(--muted);margin:4px 0 0}
.form-error{color:var(--bad);font-weight:600;margin:10px 0;font-size:.9rem}
.divider{border-top:1px solid var(--line);margin-top:18px;padding-top:14px}
.badge.good{background:rgba(95,191,61,.18);color:var(--kiwi-dark)}
.badge.warn{background:rgba(255,111,94,.18);color:var(--bad)}
.mastery-bar{height:8px;border-radius:5px;background:var(--line);overflow:hidden}
.mastery-bar>div{height:100%;background:var(--kiwi)}
.mastery-bar.mid>div{background:var(--gold)}
.mastery-bar.low>div{background:var(--bad)}
.value-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px;margin-top:18px}
.value-item{display:flex;flex-direction:column;gap:6px}
.value-item h3{margin-top:4px}
.pricing-band{display:flex;align-items:flex-start;gap:14px;margin:34px 0 20px;padding:20px 22px;border-radius:12px;background:var(--panel2);border:1px solid var(--line);font-size:.98rem}
@media (max-width:600px){.trust-strip{flex-direction:column;text-align:center}.pricing-band{flex-direction:column;align-items:center;text-align:center}}
select option{background:var(--panel2);color:var(--ink)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.popin{animation:popin .35s ease-out}
@keyframes popin{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}
@media (max-width:600px){.topbar{padding:10px 16px}nav a{margin-left:10px;font-size:.85rem}}
@media (prefers-reduced-motion:reduce){*{transition-duration:0s!important;animation-duration:0s!important}}
@media print{.no-print{display:none!important}body{background:#fff;color:#111}.card{border-color:#ccc;background:#fff}.sub{color:#555}}