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p{color:#ffffffb3;max-width:400px;margin-bottom:32px;margin-left:auto;margin-right:auto;font-size:1rem;position:relative}.bs-cta-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex;position:relative}.bs-btn-white{color:var(--bs-primary);border-radius:var(--bs-radius-full);cursor:pointer;background:#fff;border:none;align-items:center;padding:14px 32px;font-family:inherit;font-size:1rem;font-weight:700;text-decoration:none;transition:transform .2s,box-shadow .2s;display:inline-flex;box-shadow:0 4px 16px #00000026}.bs-btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 28px #0003}.bs-btn-ghost-white{color:#ffffffd9;border-radius:var(--bs-radius-full);cursor:pointer;background:0 0;border:2px solid #fff3;align-items:center;padding:14px 32px;font-family:inherit;font-size:1rem;font-weight:600;text-decoration:none;transition:background .2s,border-color .2s;display:inline-flex}.bs-btn-ghost-white:hover{background:#ffffff14;border-color:#ffffff59}.bs-course-card-new{background:var(--bs-bg-card);border:1px solid var(--bs-border);border-radius:var(--bs-radius-lg);cursor:pointer;color:inherit;flex-direction:column;height:100%;text-decoration:none;transition:transform .4s cubic-bezier(.22,1,.36,1),box-shadow .4s cubic-bezier(.22,1,.36,1),border-color .4s;display:flex;position:relative;overflow:hidden}.bs-course-card-new:before{content:"";inset-inline-start:0;background:var(--bs-primary);border-radius:0 3px 3px 0;width:3px;height:0;transition:height .4s cubic-bezier(.22,1,.36,1);position:absolute;top:0}.biosphere-dark .bs-course-card-new:before{background:var(--bs-primary-light)}.bs-course-card-new:hover{box-shadow:var(--bs-shadow-lg);border-color:var(--bs-border-active);transform:translateY(-6px)}.bs-course-card-new:hover:before{height:100%}.bs-course-visual{justify-content:center;align-items:center;height:180px;display:flex;position:relative;overflow:hidden}.bs-course-visual:after{content:"";background:linear-gradient(180deg, transparent 50%, var(--bs-bg-card) 100%);pointer-events:none;position:absolute;inset:0}.biosphere-dark .bs-course-visual:after{background:linear-gradient(180deg, transparent 50%, var(--bs-bg-card) 100%)}.bs-course-icon-wrap{z-index:1;border-radius:50%;justify-content:center;align-items:center;width:88px;height:88px;transition:transform .5s cubic-bezier(.22,1,.36,1);display:flex;position:relative}.bs-course-card-new:hover .bs-course-icon-wrap{transform:scale(1.06)}.bs-course-icon-wrap svg{stroke-width:1.5px;flex-shrink:0;width:36px;height:36px}.bs-course-grade-badge{top:14px;border-radius:var(--bs-radius-full);color:#fff;letter-spacing:.01em;z-index:2;padding:5px 14px;font-size:.72rem;font-weight:700;position:absolute;inset-inline-end:14px;box-shadow:0 2px 8px #00000026}.biosphere-dark .bs-course-grade-badge{box-shadow:0 2px 12px #0000004d}.bs-course-body{flex-direction:column;flex:1;padding:24px;display:flex}.bs-course-body h3{color:var(--bs-text-primary);margin-bottom:8px;font-size:1.05rem;font-weight:800;line-height:1.4;transition:color .25s}.bs-course-card-new:hover .bs-course-body h3{color:var(--bs-primary)}.biosphere-dark .bs-course-card-new:hover .bs-course-body h3{color:var(--bs-primary-light)}.bs-course-body p{color:var(--bs-text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;flex:1;margin-bottom:18px;font-size:.88rem;line-height:1.65;display:-webkit-box;overflow:hidden}.bs-course-meta{justify-content:space-between;align-items:center;margin-top:auto;display:flex}.bs-course-count{color:var(--bs-text-muted);background:var(--bs-bg-surface);border-radius:var(--bs-radius-full);padding:5px 14px;font-size:.78rem;font-weight:600}.biosphere-dark .bs-course-count{background:#ffffff0a}.bs-course-arrow{background:var(--bs-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;transition:background .25s,transform .25s;display:flex}.biosphere-dark .bs-course-arrow{background:var(--bs-primary-light);color:#0d2016}.bs-course-card-new:hover .bs-course-arrow{transform:translate(-4px)}.bs-course-arrow svg{width:14px;height:14px}.bs-feature-card-large{grid-column:1/-1;grid-template-columns:1fr 1fr;align-items:center;gap:40px;padding:40px;display:grid}@media (max-width:768px){.bs-feature-card-large{grid-template-columns:1fr}}.bs-section-tag{border-radius:var(--bs-radius-full);color:var(--bs-primary);letter-spacing:.01em;background:#1b43320f;border:1px solid #1b43321f;margin-bottom:16px;padding:5px 16px;font-size:.78rem;font-weight:700;display:inline-block}.biosphere-dark .bs-section-tag{color:var(--bs-primary-light);background:#52b7881a;border-color:#52b78833}.bs-section-header{text-align:center;margin-bottom:56px}.bs-section-title{letter-spacing:-.02em;color:var(--bs-text-primary);margin-bottom:12px;font-size:clamp(1.7rem,3.5vw,2.6rem);font-weight:900}.bs-section-desc{color:var(--bs-text-secondary);max-width:480px;margin:0 auto;font-size:1rem}.bs-feed-section{margin-bottom:48px}.bs-feed-header h3{color:var(--bs-text-muted);margin-bottom:16px;font-size:.85rem;font-weight:600}.bs-feed-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.bs-feed-card{background:var(--bs-bg-card);border:1px solid var(--bs-border);border-radius:var(--bs-radius-md);cursor:pointer;color:inherit;align-items:stretch;gap:14px;padding:18px 16px 18px 14px;text-decoration:none;transition:border-color .2s;display:flex}.bs-feed-card:hover{border-color:var(--bs-border-active)}.bs-feed-card-bar{border-radius:2px;flex-shrink:0;align-self:stretch;width:3px}.bs-feed-card-bar.course{background:var(--bs-primary)}.bs-feed-card-bar.lesson{background:var(--bs-accent)}.bs-feed-card-body{flex:1;min-width:0}.bs-feed-card-label{letter-spacing:.01em;margin-bottom:4px;font-size:.68rem;font-weight:600}.bs-feed-card-label.course{color:var(--bs-primary)}.bs-feed-card-label.lesson{color:var(--bs-accent)}.bs-feed-card-title{color:var(--bs-text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:8px;font-size:.88rem;font-weight:600;line-height:1.45;display:-webkit-box;overflow:hidden}.bs-feed-card-meta{color:var(--bs-text-muted);align-items:center;gap:8px;font-size:.7rem;display:flex}.bs-feed-card-meta .bs-pill{background:var(--bs-bg-surface);border-radius:var(--bs-radius-full);padding:2px 8px;font-size:.65rem;font-weight:500}.biosphere-dark .bs-feed-card{background:var(--bs-bg-card);border-color:var(--bs-border)}.biosphere-dark .bs-feed-card-bar.course{background:var(--bs-primary-light)}.biosphere-dark .bs-feed-card-meta .bs-pill{background:#ffffff0a}.bs-grade-pills{-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:8px;margin-bottom:20px;padding-bottom:2px;display:flex;overflow-x:auto}.bs-grade-pills::-webkit-scrollbar{display:none}.bs-grade-pill{border-radius:var(--bs-radius-full);border:1px solid var(--bs-border);background:var(--bs-bg-card);cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;flex-shrink:0;align-items:center;gap:8px;padding:9px 18px;font-family:inherit;transition:all .2s;display:flex}.bs-grade-pill:hover{border-color:var(--bs-text-muted)}.bs-grade-pill.active{background:var(--bs-primary);border-color:var(--bs-primary);color:#fff}.bs-grade-pill-name{white-space:nowrap;font-size:.8rem;font-weight:600}.bs-grade-pill-count{opacity:.5;font-size:.68rem;font-weight:500}.bs-grade-pill.active .bs-grade-pill-count{opacity:.7}.biosphere-dark .bs-grade-pill{background:var(--bs-bg-card);border-color:var(--bs-border)}.biosphere-dark .bs-grade-pill.active{background:var(--bs-primary-light);border-color:var(--bs-primary-light);color:#0d2016}.bs-tab-panel{display:none}.bs-tab-panel.active{animation:.3s bs-fade-in-up;display:block}.bs-scroll-track{-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:14px;padding-bottom:4px;display:flex;overflow-x:auto}.bs-scroll-track::-webkit-scrollbar{display:none}.bs-scroll-card{background:var(--bs-bg-card);border:1px solid var(--bs-border);border-radius:var(--bs-radius-md);width:400px;color:inherit;flex-shrink:0;text-decoration:none;transition:border-color .2s;overflow:hidden}.bs-scroll-card:hover{border-color:var(--bs-border-active)}.bs-scroll-card-thumb{width:100%;overflow:hidden}.bs-scroll-card-img{object-fit:contain;object-position:center;background:var(--bs-bg-card);width:100%;height:auto;display:block}.bs-scroll-card-placeholder{justify-content:center;align-items:center;width:100%;height:240px;font-size:3rem;font-weight:700;display:flex}.bs-scroll-card-body{padding:18px 20px 20px}.bs-scroll-card-title{color:var(--bs-text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:1.05rem;font-weight:700;line-height:1.45;display:-webkit-box;overflow:hidden}.bs-empty-state{text-align:center;background:var(--bs-bg-card);border:1px solid var(--bs-border);border-radius:var(--bs-radius-md);padding:48px 24px}.bs-empty-state h4{color:var(--bs-text-primary);margin-bottom:6px;font-size:.95rem;font-weight:700}.bs-empty-state p{color:var(--bs-text-muted);max-width:280px;margin:0 auto 20px;font-size:.82rem;line-height:1.6}.bs-btn-outline-sm{border:1px solid var(--bs-border);border-radius:var(--bs-radius-full);color:var(--bs-text-primary);cursor:pointer;background:0 0;align-items:center;padding:8px 18px;font-family:inherit;font-size:.78rem;font-weight:600;transition:all .2s;display:inline-flex}.bs-btn-outline-sm:hover{border-color:var(--bs-primary);color:var(--bs-primary)}.biosphere-dark .bs-btn-outline-sm{border-color:var(--bs-border);color:var(--bs-text-primary)}.biosphere-dark .bs-btn-outline-sm:hover{border-color:var(--bs-primary-light);color:var(--bs-primary-light)}@media (max-width:640px){.bs-feed-grid{grid-template-columns:1fr;gap:8px}.bs-feed-card{padding:14px 12px 14px 10px}.bs-grade-pills{gap:6px;margin-bottom:16px}.bs-grade-pill{padding:8px 14px}.bs-grade-pill-name{font-size:.76rem}.bs-scroll-card{width:320px}.bs-scroll-card-thumb{height:200px}.bs-empty-state{padding:36px 20px}}