:root{--bg:#f3f3f3;--bg-surface:#fff;--bg-muted:#ececec;--border:#e8e8e8;--border-strong:#d1d1d1;--text:#242424;--text-secondary:#747474;--text-inverse:#fff;--accent:#36f;--accent-soft:#3366ff14;--green:#009379;--green-soft:#0093791a;--red:#f55442;--red-soft:#f554421a;--action:#242424;--action-hover:#2f2f2f;--action-border:#2f2f2f;--font-display:"Instrument Sans", system-ui, sans-serif;--font-body:"Geist", system-ui, sans-serif;--font-mono:"Geist Mono", ui-monospace, monospace;--radius:6px;--radius-md:8px;--radius-lg:12px;--container:min(760px, calc(100% - 2rem));--header-h:64px}*,:before,:after{box-sizing:border-box}body{font-family:var(--font-body);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-size:1rem;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{color:#2e5ce6}[hidden]{display:none!important}.container{width:var(--container);margin-inline:auto}.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}.site-header{height:var(--header-h);border-bottom:1px solid var(--border);background:#ffffffe6}.nav{justify-content:space-between;align-items:center;height:100%;display:flex}.logo{font-family:var(--font-display);letter-spacing:-.02em;color:var(--text);font-size:1.25rem;font-weight:500}.logo:hover{color:var(--text);opacity:.75}.nav-back{color:var(--text-secondary);font-size:.875rem;font-weight:500}.nav-back:hover{color:var(--text)}.intro{padding:clamp(2.5rem,7vw,4rem) 0 2rem}.eyebrow{font-family:var(--font-mono);letter-spacing:.04em;text-transform:uppercase;color:var(--text-secondary);margin:0 0 .75rem;font-size:.75rem}h1{font-family:var(--font-display);letter-spacing:-.03em;text-wrap:balance;margin:0 0 1rem;font-size:clamp(2rem,6vw,2.75rem);font-weight:600;line-height:1.1}.lede{max-width:60ch;color:var(--text-secondary);margin:0;font-size:1.0625rem}.tool{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(1rem,4vw,1.5rem)}.status{color:var(--text-secondary);align-items:center;gap:.5rem;font-size:.875rem;display:flex}.status-dot{background:var(--border-strong);border-radius:50%;flex:none;width:8px;height:8px}.status[data-state=loading] .status-dot,.status[data-state=busy] .status-dot{background:var(--accent);animation:1.2s ease-in-out infinite pulse}.status[data-state=ready] .status-dot{background:var(--green)}.status[data-state=error] .status-dot{background:var(--red)}.status-backend{font-family:var(--font-mono);margin-left:auto;font-size:.75rem}.status-backend:not(:empty){border:1px solid var(--border);border-radius:var(--radius);padding:.1rem .45rem}@keyframes pulse{50%{opacity:.35}}.progress{background:var(--bg-muted);border-radius:2px;height:4px;margin-top:.75rem;overflow:hidden}.progress-bar{background:var(--accent);width:0;height:100%;transition:width .2s linear}.dropzone{border:1.5px dashed var(--border-strong);border-radius:var(--radius-md);background:var(--bg);cursor:pointer;place-items:center;min-height:280px;margin-top:1rem;padding:1rem;transition:border-color .15s,background .15s;display:grid}.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:var(--accent-soft)}.dropzone:focus-within{outline:2px solid var(--accent);outline-offset:2px}.dropzone.has-image{border-style:solid;border-color:var(--border);background:var(--bg-muted)}.dropzone-empty{text-align:center;color:var(--text-secondary);justify-items:center;gap:.35rem;font-size:.875rem;display:grid}.dropzone-empty svg{margin-bottom:.5rem}.dropzone-empty strong{color:var(--text);font-size:1rem;font-weight:500}#preview{border-radius:var(--radius);object-fit:contain;max-width:100%;max-height:420px;display:block}.actions{flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:1rem;display:flex}.btn{font-family:var(--font-body);border-radius:var(--radius);cursor:pointer;border:none;justify-content:center;align-items:center;padding:.625rem 1rem;font-size:.9375rem;font-weight:500;line-height:1.25;transition:background .15s linear,box-shadow .15s linear;display:inline-flex}.btn-ghost{background:var(--bg-surface);color:var(--text);box-shadow:inset 0 0 0 1px var(--border-strong)}.btn-ghost:hover{background:var(--bg)}.pending{color:var(--text-secondary);margin:0;font-size:.875rem}.result{border-top:1px solid var(--border);margin-top:1.5rem;padding-top:1.5rem}.result-verdict{font-family:var(--font-display);letter-spacing:-.02em;margin:0 0 1rem;font-size:1.5rem;font-weight:600}.result-verdict:first-letter{text-transform:uppercase}.result[data-verdict=ai] .result-verdict{color:var(--red)}.result[data-verdict=real] .result-verdict{color:var(--green)}.scores{gap:.75rem;display:grid}.score-head{justify-content:space-between;margin-bottom:.3rem;font-size:.875rem;display:flex}.score-value{font-family:var(--font-mono)}.score-track{background:var(--bg-muted);border-radius:4px;height:8px;overflow:hidden}.score-fill{border-radius:4px;height:100%}.score[data-label=artificial] .score-fill{background:var(--red)}.score[data-label=human] .score-fill{background:var(--green)}.error{color:#b3261e;background:var(--red-soft);border-radius:var(--radius);margin:1rem 0 0;padding:.75rem 1rem;font-size:.875rem}.notes{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;padding:2.5rem 0 3rem;display:grid}.notes h2{font-family:var(--font-display);margin:0 0 .4rem;font-size:1rem;font-weight:600}.notes p{color:var(--text-secondary);margin:0;font-size:.875rem}.site-footer{color:var(--text-secondary);border-top:1px solid var(--border);justify-content:space-between;padding:1.5rem 0 2rem;font-size:.8125rem;display:flex}