:root{--bg: #edf1ef;--surface: #ffffff;--surface-2: #f5f8f7;--ink: #14262c;--ink-2: #4e6168;--ink-3: #7b8b90;--line: #d4dedb;--line-strong: #b8c7c3;--brand: #0d5c55;--brand-hover: #0a4842;--brand-soft: #dcece8;--brand-ink: #083f3a;--who-student: #0d5c55;--who-student-soft: #dcece8;--who-ai: #4b48b0;--who-ai-soft: #e7e6f7;--who-teacher: #9a5f0d;--who-teacher-soft: #fbf0dc;--danger: #b42318;--danger-soft: #fdeceb;--success: #1c6b3c;--success-soft: #e3f3e8;--warning: #8a5a00;--warning-soft: #fff4d6;--font: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;--fs-xs: .8125rem;--fs-sm: .9375rem;--fs-md: 1.0625rem;--fs-lg: 1.3125rem;--fs-xl: 1.6875rem;--fs-2xl: 2.125rem;--r-sm: 6px;--r-md: 10px;--r-lg: 18px;--r-pill: 999px;--shadow-1: 0 1px 2px rgba(20, 38, 44, .06);--shadow-2: 0 10px 30px -12px rgba(20, 38, 44, .22);--color-text-main: var(--ink);--color-text-muted: var(--ink-2);--color-border: var(--line);--color-primary: var(--brand);--color-danger: var(--danger);--color-surface-hover: var(--surface-2);--radius-sm: var(--r-sm);--radius-md: var(--r-md);--shadow-sm: var(--shadow-1);--shadow-md: var(--shadow-2)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;accent-color:var(--brand)}[hidden]{display:none!important}body{font-family:var(--font);font-size:var(--fs-md);line-height:1.55;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4{font-weight:700;line-height:1.2;letter-spacing:-.012em;color:var(--ink)}h1{font-size:var(--fs-2xl)}h2{font-size:var(--fs-xl)}h3{font-size:var(--fs-lg)}p{color:var(--ink)}a{color:var(--brand);text-underline-offset:3px}a:hover{color:var(--brand-hover)}code{font-family:ui-monospace,Cascadia Mono,Consolas,monospace;font-size:.88em;background:var(--surface-2);border:1px solid var(--line);border-radius:4px;padding:.05em .35em}:focus-visible{outline:3px solid 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var(--line);border-radius:var(--r-md);padding:1.5rem;box-shadow:var(--shadow-1)}.icon{width:1.15em;height:1.15em;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:inherit;font-size:var(--fs-sm);font-weight:700;line-height:1.2;padding:.68rem 1.1rem;border-radius:var(--r-sm);border:1px solid transparent;cursor:pointer;text-decoration:none;white-space:nowrap;transition:background-color .15s ease,border-color .15s ease,color .15s ease}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover:not(:disabled){background:var(--brand-hover);color:#fff}.btn-secondary{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}.btn-secondary:hover:not(:disabled){background:var(--surface-2);border-color:var(--ink-3);color:var(--ink)}.btn-ghost{background:transparent;color:var(--ink-2)}.btn-ghost:hover:not(:disabled){background:#0d5c5512;color:var(--brand-ink)}.btn-danger{background:var(--surface);border-color:#e7b7b2;color:var(--danger)}.btn-danger:hover:not(:disabled){background:var(--danger-soft);border-color:var(--danger);color:var(--danger)}.btn-sm{font-size:var(--fs-xs);padding:.45rem .75rem}.btn-lg,.btn-large{font-size:var(--fs-md);padding:.85rem 1.5rem}.form-group{margin-bottom:1.25rem}.form-label{display:block;font-size:var(--fs-sm);font-weight:700;margin-bottom:.35rem;color:var(--ink)}.form-hint{font-size:var(--fs-xs);color:var(--ink-2);margin-top:.35rem;line-height:1.45}.form-control{width:100%;font-family:inherit;font-size:var(--fs-md);line-height:1.45;padding:.65rem .85rem;border:1px solid var(--line-strong);border-radius:var(--r-sm);background:var(--surface);color:var(--ink);transition:border-color .15s ease,box-shadow .15s ease}.form-control::placeholder{color:#93a2a6}.form-control:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #0d5c5529}textarea.form-control{resize:vertical;min-height:96px}select.form-control{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234e6168' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 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.6rem;border-radius:var(--r-pill);white-space:nowrap}.who-student{background:var(--who-student-soft);color:var(--who-student)}.who-ai{background:var(--who-ai-soft);color:var(--who-ai)}.who-teacher{background:var(--who-teacher-soft);color:var(--who-teacher)}.wristband{display:inline-flex;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:0 6px 16px -10px #14262c59;overflow:hidden;max-width:100%}.wristband-clip{width:14px;background:var(--brand);flex-shrink:0}.wristband-body{display:flex;align-items:center;gap:.9rem;padding:.5rem 1.1rem .5rem .85rem;min-width:0}.wristband-name{font-weight:700;font-size:var(--fs-md);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.wristband-meta{color:var(--ink-2);font-size:var(--fs-sm);white-space:nowrap}.wristband-code{font-family:ui-monospace,Cascadia Mono,Consolas,monospace;font-size:var(--fs-xs);letter-spacing:.06em;color:var(--brand-ink);border-left:1px dashed var(--line-strong);padding-left:.9rem;white-space:nowrap}.portrait{display:block;object-fit:cover;border-radius:50%;background:var(--surface-2);flex-shrink:0}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.site-header[data-astro-cid-37fxchfa]{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner[data-astro-cid-37fxchfa]{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}.brand[data-astro-cid-37fxchfa]{display:inline-flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--ink)}.brand-mark[data-astro-cid-37fxchfa]{width:36px;height:36px;flex-shrink:0}.brand-text[data-astro-cid-37fxchfa]{display:flex;flex-direction:column;line-height:1.15}.brand-name[data-astro-cid-37fxchfa]{font-weight:700;font-size:1.125rem;letter-spacing:-.01em}.brand-sub[data-astro-cid-37fxchfa]{font-size:var(--fs-xs);color:var(--ink-2)}.nav[data-astro-cid-37fxchfa]{display:flex;align-items:center;gap:.25rem}.nav-link[data-astro-cid-37fxchfa]{display:inline-flex;align-items:center;gap:.4rem;font-family:inherit;font-size:var(--fs-sm);font-weight:700;color:var(--ink-2);text-decoration:none;padding:.5rem .8rem;border-radius:var(--r-sm);border:none;background:none;cursor:pointer}.nav-link[data-astro-cid-37fxchfa]:hover{background:var(--surface-2);color:var(--ink)}.nav-link[data-astro-cid-37fxchfa].active{color:var(--brand-ink);background:var(--brand-soft)}.site-footer[data-astro-cid-37fxchfa]{border-top:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:var(--fs-xs)}.footer-inner[data-astro-cid-37fxchfa]{display:flex;justify-content:space-between;gap:.5rem 1.5rem;flex-wrap:wrap;padding-top:1rem;padding-bottom:1rem}.variant-focus[data-astro-cid-37fxchfa] main[data-astro-cid-37fxchfa]{padding-top:1.25rem}@media(max-width:640px){.brand-sub[data-astro-cid-37fxchfa]{display:none}.nav-link[data-astro-cid-37fxchfa]{padding:.5rem .55rem}.nav-label[data-astro-cid-37fxchfa]{display:none}}