:root{--primary:#1769ff;--accent:#ef4444;--bg:#f6f8fb;--text:#172033;--muted:#667085;--card:#fff;--border:#e5e7eb}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}.topbar{height:68px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:3}.brand{font-weight:800;font-size:20px;color:var(--primary);text-decoration:none}nav a{margin-left:18px;color:var(--text);text-decoration:none}.hero{padding:64px 20px;text-align:center;background:linear-gradient(135deg,#eff6ff,#fff)}.hero h1{font-size:clamp(32px,6vw,58px);margin:0 0 12px}.hero p{max-width:760px;margin:auto;color:var(--muted);font-size:18px}.grid-tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;max-width:1200px;margin:32px auto;padding:0 20px}.tool-card,.panel{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:22px;box-shadow:0 10px 30px rgba(15,23,42,.06)}.tool-card{text-decoration:none;color:var(--text);display:flex;flex-direction:column;gap:9px;transition:.2s}.tool-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(15,23,42,.1)}.icon{font-size:32px}.tool-wrap{max-width:900px;margin:32px auto;padding:0 20px}.upload-box{border:2px dashed #b6c4d8;border-radius:22px;background:#fff;padding:36px;text-align:center;cursor:pointer}.upload-box.drag{border-color:var(--primary);background:#eff6ff}.btn{border:0;border-radius:14px;background:var(--primary);color:white;padding:13px 22px;font-weight:700;cursor:pointer}.btn.secondary{background:#111827}.input,select,textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:12px;margin:8px 0 14px}.progress{height:12px;background:#e5e7eb;border-radius:99px;overflow:hidden;margin:14px 0}.progress span{display:block;height:100%;width:0;background:var(--primary);transition:.25s}.result,.error,.history{margin-top:18px}.error{color:#b42318}.download{display:inline-block;margin-top:10px;color:white;background:#16a34a;padding:10px 16px;border-radius:12px;text-decoration:none}.footer{text-align:center;color:var(--muted);padding:30px}.camera-preview{width:100%;max-height:480px;background:#111;border-radius:18px}.thumbs{display:flex;gap:10px;flex-wrap:wrap}.thumbs img{width:110px;border-radius:12px;border:1px solid var(--border)}@media(max-width:640px){.topbar{padding:0 14px}.upload-box{padding:24px}.tool-wrap{margin:18px auto}}