.bsc-page{background:radial-gradient(circle at 10% 4%,rgba(215,168,74,.12),transparent 32rem),linear-gradient(180deg,#fffdf8 0%,#fbf7ee 55%,#f4eddf 100%)}
.bsc-shell{padding-top:clamp(2rem,5vw,4.5rem);padding-bottom:clamp(3rem,7vw,6rem)}
.bsc-app{--bsc-teal:#0f6b68;--bsc-teal-dark:#0b4f4d;--bsc-gold:#d7a84a;--bsc-coral:#d9806c;--bsc-sage:#8ba48a;--bsc-brown:#7d583d;--bsc-muted:#687675;background:rgba(255,255,255,.88);border:1px solid rgba(125,88,61,.13);border-radius:32px;box-shadow:0 24px 60px rgba(53,62,56,.13);overflow:hidden;min-height:650px}
.bsc-screen{display:none}.bsc-screen.is-active{display:block}
.bsc-hero{display:grid;grid-template-columns:1.06fr .94fr;min-height:650px}
.bsc-hero-copy{align-self:center;padding:clamp(2.2rem,6vw,5rem)}
.bsc-hero h1{font-size:clamp(3.2rem,7vw,6.4rem);line-height:.92;letter-spacing:-.05em;max-width:650px}
.bsc-lead{font-size:clamp(1rem,1.5vw,1.12rem);line-height:1.75;color:var(--bsc-muted);max-width:620px;margin:1.4rem 0}
.bsc-feature-pills{display:flex;flex-wrap:wrap;gap:.55rem;margin:0 0 1.6rem}.bsc-feature-pills span{padding:.48rem .72rem;border-radius:999px;background:#f4f1e7;border:1px solid rgba(15,107,104,.1);font-size:.76rem;font-weight:800;color:var(--bsc-teal-dark)}
.bsc-actions{display:flex;flex-wrap:wrap;gap:.75rem}.bsc-actions-centered{justify-content:center}
.bsc-hero-art{min-height:650px;background:linear-gradient(180deg,#deeeea,#f2e5cc);display:grid;place-items:center;position:relative;overflow:hidden}.bsc-hero-art svg{width:100%;height:100%;min-height:520px}
.bsc-selection-heading{text-align:center;max-width:760px;margin:0 auto 2rem}.bsc-selection-heading h2{font-size:clamp(2.1rem,5vw,4.25rem);line-height:1.03}.bsc-selection-heading>p:last-child{color:var(--bsc-muted);line-height:1.65}.bsc-selection-heading-left{text-align:left;margin:0;max-width:720px}
[data-bsc-screen="age"],[data-bsc-screen="select"],[data-bsc-screen="game"]{padding:clamp(1.5rem,4vw,3rem)}
.bsc-age-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;max-width:960px;margin:0 auto}.bsc-age-card{border:1px solid rgba(15,107,104,.13);border-radius:24px;background:white;padding:1.6rem;text-align:left;cursor:pointer;box-shadow:0 10px 28px rgba(47,61,56,.08);transition:.2s ease}.bsc-age-card:hover{transform:translateY(-4px);border-color:rgba(15,107,104,.3);box-shadow:0 18px 38px rgba(47,61,56,.13)}.bsc-age-icon{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(145deg,#e6f0ec,#fff7e6);margin-bottom:1rem}.bsc-age-icon svg{width:30px;height:30px;stroke:var(--bsc-teal);fill:none;stroke-width:1.8}.bsc-age-card h3{font-size:1.65rem;margin-bottom:.45rem}.bsc-age-card p{color:var(--bsc-muted);line-height:1.55;margin:0}.bsc-age-card strong{display:block;color:var(--bsc-coral);margin-top:1rem;font-size:.82rem}
.bsc-selection-toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:1.25rem;margin-bottom:2rem}.bsc-level-chip{border:1px solid rgba(15,107,104,.14);background:white;border-radius:18px;padding:.85rem 1rem;text-align:left;cursor:pointer;min-width:145px}.bsc-level-chip span{display:block;font-weight:900;color:var(--bsc-teal-dark);font-size:1rem}.bsc-level-chip small{color:var(--bsc-muted)}
.bsc-story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.bsc-story-card{border:1px solid rgba(15,107,104,.11);background:white;border-radius:24px;overflow:hidden;text-align:left;cursor:pointer;box-shadow:0 9px 26px rgba(47,61,56,.08);transition:.2s ease}.bsc-story-card:hover{transform:translateY(-4px);box-shadow:0 17px 36px rgba(47,61,56,.13)}.bsc-story-art{height:235px;background:linear-gradient(180deg,#deeeea,#f2e5cc);overflow:hidden}.bsc-story-art svg{width:100%;height:100%;display:block}.bsc-story-copy{padding:1.25rem}.bsc-story-copy small{color:var(--bsc-coral);font-weight:900;text-transform:uppercase;letter-spacing:.06em}.bsc-story-copy h3{font-size:1.55rem;margin:.35rem 0 .45rem}.bsc-story-copy p{color:var(--bsc-muted);font-size:.91rem;line-height:1.55;margin:0}.bsc-story-meta{display:flex;justify-content:space-between;gap:.6rem;margin-top:1rem;color:var(--bsc-teal);font-size:.78rem;font-weight:900}
.bsc-game-header{display:grid;grid-template-columns:1fr auto;gap:1rem;align-items:start;margin-bottom:1.25rem}.bsc-game-header h2{font-size:clamp(1.8rem,4vw,3rem)}.bsc-level-line{margin:.35rem 0 0;color:var(--bsc-coral);font-weight:800}.bsc-progress-box{width:min(360px,42vw)}.bsc-progress-meta{display:flex;justify-content:space-between;gap:1rem;color:var(--bsc-muted);font-size:.78rem;font-weight:900;margin-bottom:.45rem}.bsc-progress-track{height:10px;background:#e9e9e1;border-radius:999px;overflow:hidden}.bsc-progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--bsc-gold),var(--bsc-teal));transition:width .25s ease}
.bsc-challenge-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:1.4rem;align-items:stretch}.bsc-scene{min-height:470px;border-radius:26px;background:linear-gradient(180deg,#dfeeea,#f1e2c6);position:relative;overflow:hidden}.bsc-scene-art,.bsc-scene-art svg{width:100%;height:100%;min-height:470px;display:block}.bsc-scene-reference{position:absolute;left:1rem;bottom:1rem;padding:.48rem .72rem;border-radius:999px;background:rgba(255,255,255,.9);font-size:.74rem;font-weight:900;color:var(--bsc-teal);box-shadow:0 6px 18px rgba(0,0,0,.08)}.bsc-star-counter{position:absolute;right:1rem;top:1rem;padding:.48rem .7rem;border-radius:999px;background:rgba(255,255,255,.9);font-size:.78rem;font-weight:900;color:var(--bsc-teal-dark)}
.bsc-challenge-panel{align-self:center;padding:.35rem}.bsc-challenge-label{display:inline-flex;padding:.38rem .6rem;border-radius:999px;background:#f4eee0;color:var(--bsc-coral);font-weight:900;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.8rem}.bsc-challenge-panel h3{font-size:clamp(1.75rem,3.6vw,2.75rem);line-height:1.08}.bsc-prompt{color:var(--bsc-muted);line-height:1.58;margin:.85rem 0 1rem}.bsc-choice-list{display:grid;gap:.6rem}.bsc-choice{width:100%;border:1px solid rgba(15,107,104,.13);border-radius:15px;background:#fff;padding:.82rem 1rem;text-align:left;font-weight:800;cursor:pointer;transition:.14s}.bsc-choice:hover:not(:disabled){border-color:rgba(15,107,104,.4);transform:translateX(3px)}.bsc-choice.is-correct{background:#e9f2ea;border-color:var(--bsc-sage)}.bsc-choice.is-wrong{background:#fae9e5;border-color:var(--bsc-coral)}.bsc-choice.is-selected{border-color:var(--bsc-gold);background:#fff9e9}.bsc-choice:disabled{cursor:default}.bsc-submit-row{display:flex;justify-content:flex-end;margin-top:.75rem}
.bsc-sequence{display:grid;gap:.55rem}.bsc-sequence-item{width:100%;border:1px solid rgba(15,107,104,.13);border-radius:15px;background:white;padding:.8rem 1rem;text-align:left;font-weight:800;cursor:pointer}.bsc-sequence-item.is-used{opacity:.5;cursor:default}.bsc-sequence-number{display:inline-grid;place-items:center;width:27px;height:27px;border-radius:50%;background:#eef3ed;color:var(--bsc-teal-dark);margin-right:.55rem;font-size:.76rem}.bsc-sequence-preview{font-size:.8rem;color:var(--bsc-muted);margin-top:.55rem}
.bsc-match-board{display:grid;grid-template-columns:1fr 1fr;gap:.65rem}.bsc-match-column{display:grid;gap:.55rem}.bsc-match-item{border:1px solid rgba(15,107,104,.13);border-radius:14px;background:white;padding:.72rem .8rem;text-align:left;font-weight:800;cursor:pointer;min-height:52px}.bsc-match-item.is-selected{border-color:var(--bsc-gold);background:#fff9e9}.bsc-match-item.is-matched{border-color:var(--bsc-sage);background:#e9f2ea;opacity:.7}.bsc-match-status{grid-column:1/-1;color:var(--bsc-muted);font-size:.8rem;margin-top:.25rem}
.bsc-feedback{display:none;margin-top:1rem;padding:.9rem 1rem;border-radius:16px;background:#f5f4ec;border:1px solid rgba(15,107,104,.09);color:var(--bsc-muted);line-height:1.55}.bsc-feedback.is-visible{display:block}.bsc-feedback strong{color:var(--bsc-teal-dark)}.bsc-feedback-star{display:block;color:var(--bsc-gold);font-weight:900;margin-bottom:.25rem}.bsc-next-row{text-align:right;margin-top:.9rem}
.bsc-complete{text-align:center;padding:clamp(2rem,5vw,4.2rem);max-width:860px;margin:0 auto}.bsc-complete-art{height:240px;max-width:520px;margin:0 auto 1.5rem;border-radius:26px;overflow:hidden;background:linear-gradient(180deg,#deeeea,#f2e5cc)}.bsc-complete-art svg{width:100%;height:100%;display:block}.bsc-complete h2{font-size:clamp(2.2rem,5vw,4.5rem)}.bsc-mastery-badge{display:inline-flex;margin:1rem 0 .35rem;padding:.55rem .85rem;border-radius:999px;background:#f7f0df;color:var(--bsc-teal-dark);font-weight:900}.bsc-complete-summary{color:var(--bsc-muted);line-height:1.7;max-width:720px;margin:1rem auto}.bsc-final-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem;margin:1.4rem 0}.bsc-final-stat{background:white;border:1px solid rgba(15,107,104,.11);border-radius:18px;padding:1rem}.bsc-final-stat strong{display:block;color:var(--bsc-teal-dark);font-size:1.45rem}.bsc-final-stat span{font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--bsc-muted);font-weight:900}.bsc-related{margin:0 auto 1.4rem;padding:1rem;text-align:left;border:1px solid rgba(215,168,74,.25);background:#fffaf0;border-radius:18px}.bsc-related strong{display:block;color:var(--bsc-teal-dark)}.bsc-related a{color:var(--bsc-teal);font-weight:900;text-decoration:none}.bsc-toast{position:fixed;left:50%;bottom:1.4rem;transform:translate(-50%,24px);opacity:0;pointer-events:none;z-index:30;padding:.65rem .9rem;border-radius:999px;background:var(--bsc-teal-dark);color:white;font-weight:900;transition:.2s}.bsc-toast.is-visible{opacity:1;transform:translate(-50%,0)}
@media(max-width:900px){.bsc-hero{grid-template-columns:1fr}.bsc-hero-art{min-height:430px;order:1}.bsc-hero-copy{order:2}.bsc-age-grid,.bsc-story-grid{grid-template-columns:1fr}.bsc-story-card{display:grid;grid-template-columns:.75fr 1.25fr}.bsc-story-art{height:auto;min-height:210px}.bsc-challenge-layout{grid-template-columns:1fr}.bsc-scene,.bsc-scene-art,.bsc-scene-art svg{min-height:330px}.bsc-game-header{grid-template-columns:1fr}.bsc-progress-box{width:100%}}
@media(max-width:620px){.bsc-app{border-radius:23px}.bsc-hero-copy{padding:2rem 1.25rem}.bsc-hero-art{min-height:330px}.bsc-hero-art svg{min-height:330px}[data-bsc-screen="age"],[data-bsc-screen="select"],[data-bsc-screen="game"]{padding:1.15rem .8rem 1.6rem}.bsc-selection-toolbar{display:block}.bsc-level-chip{margin-top:1rem}.bsc-story-card{display:block}.bsc-story-art{height:180px;min-height:0}.bsc-scene,.bsc-scene-art,.bsc-scene-art svg{min-height:260px}.bsc-match-board{grid-template-columns:1fr}.bsc-final-grid{grid-template-columns:1fr}.bsc-feature-pills{gap:.4rem}.bsc-feature-pills span{font-size:.7rem}}
@media(prefers-reduced-motion:reduce){.bsc-app *{scroll-behavior:auto!important;transition-duration:.001ms!important}}