:root{--bg-canvas:#05070d;--bg-gradient-start:#08111f;--bg-gradient-end:#03060b;--surface-1:#0b1220db;--surface-2:#101a2beb;--surface-3:#132034f0;--text-primary:#f5fbff;--text-secondary:#b7c9d9;--text-muted:#7f95aa;--accent-cyan:#35e0ff;--accent-blue:#3b82f6;--accent-violet:#8b5cf6;--success:#1ee6a5;--warning:#ffb84d;--border-subtle:#5f8cb433;--border-strong:#35e0ff66;--shadow-panel:0 18px 50px #00000061;--glow-soft:0 0 28px #35e0ff2e;--glow-strong:0 0 36px #35e0ff47}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-height:100vh;color:var(--text-primary);background:radial-gradient(circle at top,#35e0ff1f,transparent 32%),linear-gradient(160deg,var(--bg-gradient-start),var(--bg-gradient-end)55%,var(--bg-canvas));margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}button,textarea,input{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh;position:relative}.app-shell:before{content:"";pointer-events:none;background-image:linear-gradient(#35e0ff09 1px,#0000 1px),linear-gradient(90deg,#35e0ff09 1px,#0000 1px);background-size:72px 72px;position:fixed;inset:0;-webkit-mask-image:radial-gradient(circle,#000 45%,#0000 100%);mask-image:radial-gradient(circle,#000 45%,#0000 100%)}.topbar{z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--border-subtle);background:#05070db8;justify-content:space-between;align-items:center;gap:1rem;padding:1.1rem 2rem;display:flex;position:sticky;top:0}.brand-mark{align-items:center;gap:.9rem;display:flex}.brand-mark strong,.brand-mark span{display:block}.brand-mark span:last-child{color:var(--text-muted);margin-top:.15rem;font-size:.9rem}.brand-icon{background:linear-gradient(180deg,var(--accent-cyan),var(--accent-blue));width:14px;height:36px;box-shadow:var(--glow-strong);border-radius:999px}.topnav{color:var(--text-secondary);flex-wrap:wrap;gap:1rem;display:flex}.topnav a:hover{color:var(--text-primary)}.page-frame{width:min(1280px,100% - 2rem);margin:0 auto;padding:2rem 0 4rem}.hero-grid,.section-heading,.exercise-layout,.workspace-grid,.overview-grid,.export-row,.hero-actions,.filter-row,.exercise-meta,.exercise-card-head,.sidebar-meta,.dropzone-actions,.notes-meta{gap:1rem;display:flex}.hero-grid,.exercise-layout,.workspace-grid,.overview-grid{align-items:stretch}.hero-grid,.exercise-layout{grid-template-columns:1.35fr .85fr;display:grid}.hero-grid-refined{gap:1.5rem;margin-bottom:1.25rem}.workspace-grid,.overview-grid,.card-grid{display:grid}.workspace-grid,.overview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stacked-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem}.hero-copy h1,.exercise-main h1{margin:.45rem 0 1rem;font-size:clamp(2.2rem,4vw,4rem);line-height:1.02}.hero-copy-refined{max-width:760px;padding:1rem .5rem .25rem 0}.hero-copy-refined h1{letter-spacing:-.04em;max-width:12ch;margin-bottom:1rem;font-size:clamp(2.6rem,4.8vw,5rem)}.hero-copy-refined p{max-width:60ch;font-size:1.08rem}.hero-copy p,.panel-copy,.exercise-card p,.step-item p,.dropzone p,.notes-meta,.metric-label{color:var(--text-secondary)}.hero-copy{padding:2rem .5rem 1rem 0}.eyebrow{color:var(--accent-cyan);letter-spacing:.14em;text-transform:uppercase;align-items:center;gap:.5rem;font-size:.85rem;display:inline-flex}.glowing-panel{border:1px solid var(--border-subtle);background:linear-gradient(180deg,var(--surface-2),var(--surface-1));box-shadow:var(--shadow-panel);border-radius:20px;padding:1.4rem;position:relative;overflow:hidden}.glowing-panel:after{content:"";pointer-events:none;border-radius:inherit;position:absolute;inset:0;box-shadow:inset 0 1px #ffffff0a}.glowing-panel.interactive:hover{border-color:var(--border-strong);box-shadow:var(--shadow-panel),var(--glow-soft);transition:all .18s;transform:translateY(-2px)}.hero-metrics,.exercise-sidebar,.exercise-main{flex-direction:column;gap:1rem;display:flex}.hero-summary{align-content:start;gap:1rem;padding:1.35rem 1.4rem 1.5rem;display:grid}.hero-summary-head{justify-content:space-between;align-items:center;gap:1rem;display:flex}.hero-summary h2{margin:0;font-size:clamp(1.5rem,2vw,2rem);line-height:1.15}.hero-summary p{margin:0}.hero-summary-meta,.hero-summary-stats,.overview-pill-grid{gap:.85rem;display:grid}.hero-summary-meta{color:var(--text-muted);grid-template-columns:repeat(2,minmax(0,1fr));font-size:.95rem}.hero-summary-meta span{background:#ffffff06;border:1px solid #5f8cb424;border-radius:14px;padding:.7rem .8rem}.hero-summary-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-summary-stats>div,.overview-pill{background:#ffffff06;border:1px solid #5f8cb424;border-radius:16px;padding:.95rem 1rem}.hero-summary-stats strong{color:var(--accent-cyan);margin-top:.45rem;font-size:1.3rem;display:block}.metric-stack{gap:1rem;display:grid}.metric-stack strong{color:var(--accent-cyan);margin-top:.4rem;font-size:2.3rem;display:block}.button{border:1px solid var(--border-subtle);min-height:44px;color:var(--text-primary);background:#ffffff08;border-radius:12px;justify-content:center;align-items:center;padding:.85rem 1.15rem;display:inline-flex}.button.primary{box-shadow:var(--glow-soft);background:linear-gradient(#35e0ff2e,#3b82f624);border-color:#35e0ff6b}.button.secondary:hover,.button.primary:hover{border-color:var(--border-strong)}.section-heading{justify-content:space-between;align-items:end;margin:2rem 0 1.25rem}.section-heading-refined{margin-top:1.5rem}.section-heading-refined h2,.workbook-overview-row h2{margin:.35rem 0 .5rem;font-size:clamp(1.6rem,2.5vw,2.5rem)}.section-heading-refined p,.overview-pill span,.workbook-overview-row p{color:var(--text-secondary);margin:0}.workbook-overview-row{margin:0 0 1.25rem}.overview-strip{gap:1.25rem;display:grid}.overview-pill-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.overview-pill{gap:.35rem;display:grid}.overview-pill strong,.exercise-card-cta{color:var(--text-primary)}.filter-row,.hero-actions,.exercise-meta,.exercise-card-head,.sidebar-meta,.dropzone-actions,.notes-meta{flex-wrap:wrap}.card-link{display:block}.card-grid-refined{gap:1.4rem}.track-sections{gap:1.75rem;display:grid}.track-section,.featured-track-block{gap:1rem;display:grid}.track-card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:1.4rem;display:grid}.featured-track-card,.track-section-head{gap:1rem;display:grid}.featured-track-head,.track-section-head{align-items:start}.featured-track-head,.track-section-head,.track-section-meta,.featured-track-meta,.featured-track-actions{gap:1rem;display:flex}.featured-track-head,.track-section-head,.featured-track-actions{justify-content:space-between}.featured-track-card h3,.track-section-head h3{margin:.35rem 0 .4rem;font-size:clamp(1.45rem,2.2vw,2.2rem)}.featured-track-card p,.track-section-head p{margin:0}.track-section-meta,.featured-track-meta{color:var(--text-muted);flex-wrap:wrap;font-size:.95rem}.track-section-meta span,.featured-track-meta span{background:#ffffff06;border:1px solid #5f8cb424;border-radius:999px;padding:.65rem .85rem}.exercise-card{height:100%}.exercise-card-refined{gap:1.15rem;min-height:100%;padding:1.35rem;display:grid}.exercise-card-head-refined{align-items:center}.exercise-card-body{gap:.8rem;display:grid}.exercise-card-body h3{letter-spacing:-.03em;margin:0;font-size:clamp(1.45rem,2vw,1.85rem);line-height:1.1}.exercise-card-body p{margin:0;font-size:1rem}.exercise-meta-refined{border-top:1px solid #5f8cb41f;padding-top:.25rem}.exercise-card-footer{justify-content:flex-start;margin-top:auto;padding-top:.35rem;display:flex}.exercise-card-cta{color:var(--accent-cyan);font-size:.92rem}.category-chip,.pill{border-radius:999px;align-items:center;padding:.38rem .72rem;font-size:.82rem;display:inline-flex}.category-chip{color:var(--accent-cyan);background:#35e0ff14;border:1px solid #35e0ff2e}.category-chip-link,.pill-link{transition:border-color .18s,box-shadow .18s,transform .18s}.category-chip-link:hover,.pill-link:hover{border-color:var(--border-strong);box-shadow:var(--glow-soft);transform:translateY(-1px)}.pill{border:1px solid #0000}.pill-neutral{color:var(--text-secondary);background:#7f95aa1f}.pill-neutral:before,.pill-info:before,.pill-success:before{content:"";background:currentColor;border-radius:999px;width:8px;height:8px;margin-right:.45rem;box-shadow:0 0 10px}.pill-info{color:#8fc6ff;background:#3b82f61f;border-color:#3b82f633}.pill-success{color:var(--success);background:#1ee6a51f;border-color:#1ee6a52e}.exercise-meta,.sidebar-meta,.notes-meta{color:var(--text-muted);font-size:.92rem}.exercise-layout{margin-top:1rem}.stacked-layout{display:block}.stacked-flow{gap:1rem;display:grid}.step-list{gap:.85rem;margin:1rem 0 0;padding:0;list-style:none;display:grid}.step-item{background:#ffffff05;border:1px solid #5f8cb41f;border-radius:16px;gap:.85rem;padding:.9rem;display:grid}.step-item.active{box-shadow:inset 0 0 0 1px #35e0ff14,var(--glow-soft);border-color:#35e0ff59}.step-item.expandable{padding:0;overflow:hidden}.step-trigger{width:100%;color:inherit;text-align:left;background:0 0;border:0;grid-template-columns:minmax(140px,180px) 1fr auto;align-items:start;gap:1rem;padding:1rem;display:grid}.step-header-band,.step-header-band-copy{gap:.65rem;display:grid}.step-header-band{align-content:start}.step-header-band-copy{grid-template-columns:auto 1fr;align-items:center}.step-number-label{color:var(--accent-cyan);letter-spacing:.18em;text-transform:uppercase;white-space:nowrap;font-size:.82rem;font-weight:700}.step-header-line{background:linear-gradient(90deg,#35e0ff66,#35e0ff14);height:1px;display:block}.step-trigger-copy{gap:.25rem;padding-top:.1rem;display:grid}.step-title-row{flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.step-toggle{color:var(--accent-cyan);font-size:1.35rem;line-height:1}.step-detail-panel{border-top:1px solid #5f8cb41f;gap:1rem;padding:0 .9rem .9rem 4rem;display:grid}.step-details-wrap{gap:1rem;display:grid}.step-progress-card{background:#ffffff08;border:1px solid #5f8cb429;border-radius:16px;padding:.9rem 1rem}.step-progress-head{justify-content:space-between;gap:1rem;margin-bottom:.75rem;display:flex}.step-progress-bar{background:#ffffff14;border-radius:999px;width:100%;height:10px;overflow:hidden}.step-progress-bar span{border-radius:inherit;background:linear-gradient(90deg,var(--accent-cyan),var(--accent-blue));height:100%;box-shadow:var(--glow-soft);display:block}.step-action-row{justify-content:flex-start;display:flex}.step-detail-panel h4{margin:0 0 .5rem}.step-detail-panel ul{color:var(--text-secondary);margin:0;padding-left:1.2rem}.step-detail-panel p{color:var(--text-secondary);margin:0}.step-copy-header{justify-content:space-between;align-items:center;gap:1rem;margin-bottom:.6rem;display:flex}.step-warning-list{color:var(--warning);margin:.5rem 0 0;padding-left:1.2rem}.step-ready-text{color:var(--success)}.step-timestamp,.attachment-time{color:var(--text-muted);font-size:.85rem}.step-evidence-dropzone{color:var(--text-secondary);background:#35e0ff0a;border:1px dashed #35e0ff47;border-radius:14px;outline:none;padding:.9rem 1rem}.step-evidence-dropzone:focus{border-color:var(--border-strong);box-shadow:var(--glow-soft)}.step-evidence-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:.9rem;display:grid}.step-evidence-image-wrap{min-height:160px}.copy-button{min-height:36px;padding:.55rem .85rem}.copy-block{color:var(--text-secondary);white-space:pre-wrap;word-break:break-word;background:#03060b7a;border:1px solid #5f8cb429;border-radius:14px;margin:0;padding:.9rem}.step-index{width:2.5rem;height:2.5rem;color:var(--accent-cyan);background:radial-gradient(circle at top,#35e0ff2e,#35e0ff14);border:1px solid #35e0ff3d;border-radius:999px;justify-content:center;align-items:center;font-weight:700;display:inline-flex;box-shadow:inset 0 0 0 1px #ffffff08,0 0 18px #35e0ff1f}.workspace-grid{margin:1rem 0}.dropzone{background:#35e0ff0a;border:1px dashed #35e0ff52;border-radius:18px;outline:none;padding:1.2rem;transition:border-color .18s,box-shadow .18s,background .18s}.dropzone:focus,.dropzone.drag-active{border-color:var(--border-strong);box-shadow:var(--glow-soft);background:#35e0ff14}.paste-hint{color:var(--text-secondary);font-size:.92rem}.uploader-message,.uploader-meta{color:var(--text-secondary);margin:.85rem 0 0;font-size:.92rem}.uploader-meta{color:var(--text-muted)}.attachment-preview{margin-top:1rem}.attachment-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.attachment-card{background:#ffffff08;border:1px solid #5f8cb429;border-radius:16px;padding:1rem}.attachment-empty{border-style:dashed}.attachment-image-card{gap:.9rem;display:grid}.attachment-image-card.compact{gap:.65rem}.attachment-image-wrap{background:#03060b8c;border:1px solid #35e0ff24;border-radius:14px;min-height:220px;position:relative;overflow:hidden}.attachment-image{object-fit:cover}.attachment-copy{gap:.35rem;display:grid}.attachment-remove{justify-self:start}.attachment-badge{color:var(--accent-cyan);margin-bottom:.6rem;font-size:.75rem;display:inline-block}.field-label{color:var(--text-secondary);margin:.9rem 0 .55rem;display:block}.notes-area,.step-notes-area{width:100%;min-height:240px;color:var(--text-primary);resize:vertical;background:#03060b73;border:1px solid #5f8cb433;border-radius:16px;padding:1rem}.reviewer-input{resize:none;min-height:52px}.step-notes-area{min-height:140px}.notes-area::placeholder,.step-notes-area::placeholder{color:var(--text-muted)}.notes-area:focus,.step-notes-area:focus{border-color:var(--border-strong);box-shadow:var(--glow-soft);outline:2px solid #35e0ff80}.export-row{justify-content:space-between;align-items:center}@media (max-width:1080px){.hero-grid,.exercise-layout,.workspace-grid,.overview-grid,.card-grid,.overview-pill-grid,.hero-summary-stats,.hero-summary-meta,.track-card-grid{grid-template-columns:1fr}}@media (max-width:720px){.topbar,.section-heading,.export-row,.hero-summary-head,.featured-track-head,.track-section-head,.featured-track-actions{flex-direction:column;align-items:flex-start}.page-frame{width:min(100% - 1rem,1280px)}.hero-copy-refined h1{max-width:none;font-size:clamp(2.4rem,12vw,3.6rem)}.step-trigger{grid-template-columns:1fr}.step-header-band{grid-template-columns:1fr auto;align-items:center}}