/* Lesson pages (Learn → Play → Show): the unit index, the illustrated lesson and the three-question check. */
.kl{--kl-a:#f6c96c;--kl-a-2:#ffe2a3;--kl-glow:rgba(246,201,108,.35)}
.kl-c-gold{--kl-a:#f6c96c;--kl-a-2:#ffe2a3;--kl-glow:rgba(246,201,108,.35)}
.kl-c-cyan{--kl-a:#3dd5f3;--kl-a-2:#a6efff;--kl-glow:rgba(61,213,243,.32)}
.kl-c-mint{--kl-a:#62e3ab;--kl-a-2:#b8f5d9;--kl-glow:rgba(98,227,171,.3)}
.kl-c-sky{--kl-a:#7cbcff;--kl-a-2:#c7e2ff;--kl-glow:rgba(124,188,255,.32)}
.kl-c-pink{--kl-a:#ff9fd3;--kl-a-2:#ffd3ec;--kl-glow:rgba(255,159,211,.32)}
.kl-c-coral{--kl-a:#ff8f7f;--kl-a-2:#ffd0c8;--kl-glow:rgba(255,143,127,.32)}
.kl-back,.kl-index-back{display:inline-flex;align-items:center;gap:6px;color:var(--k-ink-2);text-decoration:none;border-radius:999px;padding:6px 14px 6px 8px;font-weight:700}
.kl-back:hover,.kl-index-back:hover{background:var(--k-surface)}
.kl-ico{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- Index (also the no-script view) ---------- */
.kl-index-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:24px;align-items:center;padding:clamp(18px,2.6vw,30px);border-radius:28px;background:linear-gradient(135deg,var(--k-surface) 0%,#0c1338 70%);border:1px solid var(--k-line);box-shadow:var(--k-shadow);margin:14px 0 26px;position:relative;overflow:hidden}
.kl-index-hero::before{content:"";position:absolute;inset:auto auto -120px -80px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,var(--kl-glow),transparent 70%);pointer-events:none}
.kp-main .kl-index-hero h1{margin:.1em 0 .3em;font-size:clamp(2rem,4.6vw,3rem)}
.kl-index-hero p{color:var(--k-ink-2);margin:0 0 10px;font-size:1.08rem}
.kl-index-hero .kl-helper-art{width:min(100%,220px);justify-self:center}
.kl-index-hero .kl-helper-art img{width:100%;height:auto;display:block;filter:drop-shadow(0 14px 24px rgba(0,0,0,.4))}
.kl-steps{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.kl-steps li{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid var(--k-line);border-radius:999px;padding:6px 14px;font-weight:700;font-size:.95rem}
.kl-steps li b{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--kl-a);color:#14183d;font-size:.85rem}
.kl-band{margin:26px 0 10px}
.kl-band h2{display:flex;align-items:center;gap:12px;margin:0 0 12px;font-size:1.35rem}
.kl-band h2 span{font-size:.9rem;font-weight:700;color:var(--k-ink-2)}
.kl-units{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin:0;padding:0;list-style:none}
.kl-unit{background:var(--k-surface);border:1px solid var(--k-line);border-radius:22px;padding:16px 18px;display:flex;flex-direction:column;gap:10px}
.kl-unit h3{margin:0;font-size:1.15rem}
.kl-unit-kicker{margin:0;color:var(--kl-a);font-weight:800;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase}
.kl-unit-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.kl-unit-links a{display:inline-flex;align-items:center;gap:6px;text-decoration:none;font-weight:800;border-radius:999px;padding:9px 16px;background:var(--kl-a);color:#14183d}
.kl-unit-links a.kl-link-check{background:transparent;color:var(--k-ink);border:2px solid var(--kl-a)}
.kl-unit details{margin-top:4px}
.kl-unit summary{cursor:pointer;font-weight:700;color:var(--k-ink-2)}
.kl-unit details ol{margin:8px 0 0;padding-left:20px;color:var(--k-ink-2);font-size:.95rem}
.kl-unit details li{margin:4px 0}
.kl-index-note{margin:26px 0 0;color:var(--k-ink-2);font-size:.95rem}

/* ---------- Viewer ---------- */
.kl-stage[hidden]{display:none}
.kl-view{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start;margin:10px 0 30px}
.kl-head{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px}
.kl-where{margin:0;color:var(--k-ink-2);font-weight:700;font-size:.95rem;flex:1 1 200px}
.kp-main .kl-title{grid-column:1/-1;margin:0;font-size:clamp(1.5rem,3.4vw,2.2rem)}
.kl-body{background:var(--k-surface);border:1px solid var(--k-line);border-radius:28px;padding:18px;box-shadow:var(--k-shadow);min-width:0}
.kl-picture{border-radius:20px;overflow:hidden;background:#fff6e6;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.kl-svg{display:block;width:100%;height:auto}
.kl-tap{cursor:pointer;transition:transform .2s ease,filter .2s ease;outline:none}
.kl-tap:hover,.kl-tap:focus-visible{filter:drop-shadow(0 0 10px #fff) drop-shadow(0 0 4px var(--kl-a))}
.kl-tap.is-hit{filter:drop-shadow(0 0 8px var(--kl-a));animation:kl-pop .45s ease}
@keyframes kl-pop{0%{transform:scale(1)}40%{transform:scale(1.14)}100%{transform:scale(1)}}
.kl-task{margin:14px 4px 0;font-weight:800;color:var(--kl-a);display:flex;align-items:center;gap:8px}
.kl-task::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--kl-a);box-shadow:0 0 0 6px var(--kl-glow);animation:kl-pulse 1.4s ease-in-out infinite}
@keyframes kl-pulse{0%,100%{box-shadow:0 0 0 4px var(--kl-glow)}50%{box-shadow:0 0 0 10px transparent}}
.kl-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}
.kl-dots{display:flex;gap:8px;margin:0;padding:0;list-style:none}
.kl-dots li{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.18);border:2px solid transparent}
.kl-dots li.is-now{background:var(--kl-a);box-shadow:0 0 0 4px var(--kl-glow)}
.kl-dots li.is-done{background:var(--kl-a-2)}
.kl-next{display:inline-flex;align-items:center;gap:8px;font-size:1.05rem;padding:14px 22px}
.kl-next:disabled{opacity:.45;cursor:not-allowed}
.kl-next .kl-ico{width:20px;height:20px}
.kl-bubble{position:sticky;top:12px;background:#f7f4ff;color:#14183d;border-radius:24px;padding:14px 16px;box-shadow:var(--k-shadow);display:grid;grid-template-columns:auto;gap:10px;justify-items:center}
.kl-helper{width:150px;height:150px}
.kl-helper .kpiko{width:100%;height:100%}
.kl-caption{margin:0;font-size:1.12rem;line-height:1.5;font-weight:600;text-align:center;min-height:3em}
.kl-caption mark{background:var(--kl-a);color:#14183d;border-radius:6px;padding:0 3px}
.kl-tools{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.kl-chip{display:inline-flex;align-items:center;gap:6px;border:2px solid #d8d2f0;background:#fff;color:#14183d;border-radius:999px;padding:7px 14px;font:inherit;font-weight:800;font-size:.9rem;cursor:pointer}
.kl-chip:hover{border-color:#14183d}
.kl-chip .kl-ico{width:18px;height:18px}

/* ---------- Check ---------- */
.kl-ask{margin:12px 0 16px;font-size:clamp(1.25rem,2.6vw,1.6rem);line-height:1.35}
.kl-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.kl-option{display:flex;flex-direction:column;align-items:center;gap:8px;background:#fff;color:#14183d;border:3px solid transparent;border-radius:20px;padding:12px;font:inherit;font-weight:800;font-size:1.05rem;cursor:pointer;transition:transform .15s ease,border-color .15s ease,opacity .2s ease;min-height:64px}
.kl-option:hover{transform:translateY(-2px);border-color:var(--kl-a)}
.kl-option:focus-visible{outline:3px solid var(--kl-a);outline-offset:2px}
.kl-option-pic{width:100%;border-radius:12px;overflow:hidden;background:#fff6e6}
.kl-option-pic svg{display:block;width:100%;height:auto}
.kl-option-text{font-size:1.3rem;padding:8px 0}
.kl-option-label{font-size:.95rem;color:#3b3f6a}
.kl-option.is-yes{border-color:#2fbf7f;box-shadow:0 0 0 6px rgba(47,191,127,.25);animation:kl-pop .5s ease}
.kl-option.is-no{opacity:.45;border-color:#d8d2f0;cursor:not-allowed}
.kl-option.is-dim{opacity:.35}
.kl-result{text-align:center;padding:16px 8px}
.kl-result-kicker{margin:0;color:var(--kl-a);font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:.85rem}
.kl-stars{display:inline-flex;gap:6px;margin:12px 0}
.kl-star{width:48px;height:48px;fill:rgba(255,255,255,.14);stroke:none}
.kl-star.is-on{fill:var(--kl-a);filter:drop-shadow(0 0 10px var(--kl-glow))}
.kl-result-text{font-size:1.15rem;margin:6px 0 18px}
.kl-result-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}

@media (max-width:820px){
 .kl-index-hero{grid-template-columns:1fr}
 .kl-index-hero .kl-helper-art{width:min(60%,180px)}
 .kl-view{grid-template-columns:1fr}
 .kl-bubble{position:static;grid-template-columns:110px 1fr;align-items:center;justify-items:start}
 .kl-helper{width:110px;height:110px}
 .kl-caption{text-align:left;min-height:0}
 .kl-tools{grid-column:1/-1;justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){.kl-tap.is-hit,.kl-option.is-yes{animation:none}.kl-task::before{animation:none}.kl-tap{transition:none}}

.kl-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}