:root{--bg:#f5f6f8;--surface:#fff;--border:#dfe3ea;--text:#1f2430;--text-dim:#6b7280;--accent:#2f6fed;--accent-hover:#235bd0;--good:#188a53}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg);background-image:linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);color:var(--text);background-size:22px 22px;min-height:100vh;font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:18px}.page{flex-direction:column;align-items:center;gap:24px;max-width:720px;margin:0 auto;padding:48px 24px;display:flex}.page--wide{max-width:1000px}.header{text-align:center}.header h1{color:var(--text);font-size:31px;font-weight:700}.subtitle{color:var(--text-dim);margin-top:8px}.dropzone{background:var(--surface);border:2px dashed var(--border);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;width:100%;min-height:280px;transition:border-color .2s,background .2s;display:flex;overflow:hidden}.dropzone:hover,.dropzone--active{border-color:var(--accent);background:#f0f4ff}.dropzone__hint{text-align:center;color:var(--text-dim);padding:24px}.dropzone__icon{margin-bottom:12px;font-size:3rem;display:block}.dropzone__formats{opacity:.8;margin-top:6px;font-size:16px}.dropzone__preview{object-fit:contain;max-width:100%;max-height:400px}.filename{color:var(--text-dim);font-size:16px}.btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 40px;font-size:18px;font-weight:600;transition:background .2s}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn--secondary{border:1px solid var(--accent);color:var(--accent);background:0 0}.btn--secondary:hover{background:#eef3fe}.compare{grid-template-columns:1fr 1fr;gap:16px;width:100%;display:grid}@media (width<=700px){.compare{grid-template-columns:1fr}}.compare__card{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;align-items:center;gap:8px;padding:12px;display:flex}.compare__card img{object-fit:contain;border-radius:6px;width:100%}.compare__card figcaption{color:var(--text-dim);font-size:16px;font-weight:600}.slider-block{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:10px;width:100%;max-width:640px;padding:20px 24px;display:flex}.slider-block label{font-size:18px}.slider-block input[type=range]{width:100%;accent-color:var(--accent);cursor:pointer}.slider-block__ends{color:var(--text-dim);justify-content:space-between;font-size:15px;display:flex}.stats{flex-wrap:wrap;justify-content:center;gap:16px;width:100%;display:flex}.stats__item{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:12px;flex-direction:column;flex:1;gap:4px;min-width:180px;max-width:300px;padding:16px 24px;display:flex}.stats__value{font-size:28px;font-weight:700}.stats__value--good{color:var(--good)}.stats__label{color:var(--text-dim);font-size:16px}.stats__warning{color:#92600a;text-align:center;background:#fdf3e0;border:1px solid #f0d9a8;border-radius:8px;max-width:640px;padding:10px 16px;font-size:16px}.home__intro{text-align:center;max-width:640px;color:var(--text);line-height:1.6}.compare--demo{max-width:100%}.home__section-title{margin-top:8px;font-size:24px;font-weight:700}.home__apps{grid-template-columns:repeat(3,1fr);gap:16px;width:100%;display:grid}@media (width<=700px){.home__apps{grid-template-columns:1fr}}.home__app{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:12px;padding:20px}.home__app-icon{margin-bottom:8px;font-size:1.8rem;display:block}.home__app h3{margin-bottom:6px;font-size:18px}.home__app p{color:var(--text-dim);font-size:16px;line-height:1.5}.btn--large{padding:14px 48px;font-size:20px}.error{color:#b3261e;text-align:center}.spinner{border:4px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:44px;height:44px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}