:root{--bg: #ffffff;--bg-soft: #f6f7fb;--text: #171a21;--muted: #5c6470;--accent: #2563eb;--accent-dark: #1e40af;--border: #e4e7ee;--radius: 12px;--maxw: 880px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}header.site{border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:16px}.brand{font-weight:800;font-size:1.25rem;color:var(--text);text-decoration:none;letter-spacing:-.02em}.brand span{color:var(--accent)}.nav a.tools-link{color:var(--muted);text-decoration:none;font-weight:600;font-size:.95rem}.nav a.tools-link:hover{color:var(--accent)}main{padding:32px 0 56px}h1{font-size:2rem;letter-spacing:-.02em;line-height:1.2;margin:8px 0 12px}h2{font-size:1.35rem;margin-top:36px;letter-spacing:-.01em}h3{font-size:1.05rem;margin-bottom:6px}p.lead{color:var(--muted);font-size:1.1rem;margin-top:0}a{color:var(--accent)}.tool-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:24px}.tool-card{border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-decoration:none;color:inherit;background:var(--bg);transition:border-color .15s,transform .15s,box-shadow .15s;display:block}.tool-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 20px #2563eb14}.tool-card h3{margin:0 0 6px;color:var(--text)}.tool-card p{margin:0;color:var(--muted);font-size:.92rem}.panel{border:1px solid var(--border);background:var(--bg-soft);border-radius:var(--radius);padding:20px;margin:20px 0}label{display:block;font-weight:600;font-size:.9rem;margin:12px 0 4px}input[type=text],input[type=number],input[type=datetime-local],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:1rem;background:var(--bg);color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:560px){.field-row{grid-template-columns:1fr}}button.primary{background:var(--accent);color:#fff;border:none;padding:12px 20px;font-size:1rem;font-weight:700;border-radius:8px;cursor:pointer;margin-top:16px}button.primary:hover{background:var(--accent-dark)}button.primary:disabled{opacity:.6;cursor:not-allowed}.result{margin-top:16px;padding:16px;border-radius:8px;background:#fff;border:1px solid var(--border);font-size:1.05rem;word-break:break-word}.result.big{font-size:1.5rem;font-weight:800}.result table{width:100%;border-collapse:collapse;font-size:.95rem}.result th,.result td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--border)}.result th{color:var(--muted);font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.03em}.copy-btn{background:var(--bg);border:1px solid var(--accent);color:var(--accent);font-weight:700;padding:8px 14px;border-radius:8px;cursor:pointer;margin-top:10px;font-size:.9rem}.copy-btn:hover{background:var(--accent);color:#fff}code.tag{background:#eef2ff;padding:2px 8px;border-radius:6px;font-size:.95em}.ad-slot{margin:28px 0;min-height:90px;border:1px dashed var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.8rem;background:var(--bg-soft)}.ad-slot[data-active=false]{display:none}.paywall-banner{margin:28px 0;padding:14px 18px;border:1px solid var(--border);border-radius:var(--radius);background:linear-gradient(90deg,#eef2ff,#f6f7fb);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.95rem}.paywall-banner a{background:var(--text);color:#fff;text-decoration:none;padding:8px 14px;border-radius:8px;font-weight:700;font-size:.9rem}.faq details{border:1px solid var(--border);border-radius:8px;padding:12px 16px;margin:8px 0;background:var(--bg)}.faq summary{cursor:pointer;font-weight:600}.faq p{color:var(--muted);margin:10px 0 2px}.privacy-note{display:inline-block;background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0;padding:8px 14px;border-radius:8px;font-size:.9rem;font-weight:600;margin:8px 0}footer.site{border-top:1px solid var(--border);padding:24px 0 40px;color:var(--muted);font-size:.9rem}footer.site .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}footer.site a{color:var(--muted)}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);padding:32px 20px;text-align:center;color:var(--muted);background:var(--bg);cursor:pointer;transition:border-color .15s,background .15s}.dropzone.drag{border-color:var(--accent);background:#eef2ff}.file-list{list-style:none;padding:0;margin:12px 0}.file-list li{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 12px;border:1px solid var(--border);border-radius:8px;margin:6px 0;background:var(--bg);font-size:.95rem}.file-list .rm{background:none;border:none;color:#dc2626;cursor:pointer;font-weight:700}.file-list .mv{background:none;border:none;cursor:pointer;color:var(--muted);font-weight:700;padding:0 4px}.file-list .mv:hover{color:var(--accent)}.muted{color:var(--muted)}.small{font-size:.85rem}.mt0{margin-top:0}