:root{--bg:#f6f8fb;--card:#fff;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--soft:#f8fafc;--accent:#2563eb;--accent-dark:#1d4ed8;--danger:#b91c1c;--danger-bg:#fef2f2;--radius:18px;--shadow:0 18px 50px rgba(15,23,42,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}button,input{font:inherit}button{cursor:pointer}.site-header{height:64px;background:#0b1220;color:#fff}.header-inner{max-width:1100px;height:100%;margin:auto;padding:0 24px;display:flex;align-items:center;gap:14px}.brand{color:#fff;text-decoration:none;font-weight:800;letter-spacing:-.02em;font-size:20px}.header-label{color:#94a3b8;font-size:14px;border-left:1px solid #334155;padding-left:14px}.page-shell{max-width:1100px;margin:0 auto;padding:58px 24px 72px}.hero{text-align:center;max-width:760px;margin:0 auto 34px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--accent);margin-bottom:9px}.hero h1{font-size:clamp(34px,5vw,54px);line-height:1.05;letter-spacing:-.045em;margin:0 0 14px}.hero p{font-size:18px;color:var(--muted);margin:0}.tool-card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.dropzone{margin:18px;border:2px dashed #cbd5e1;border-radius:18px;min-height:430px;padding:70px 28px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;transition:.18s ease}.dropzone:hover,.dropzone:focus-visible,.dropzone.dragging{border-color:#60a5fa;background:#f8fbff;outline:none}.upload-icon{width:58px;height:58px;border-radius:16px;background:#eff6ff;color:var(--accent);display:grid;place-items:center;font-size:31px;font-weight:700;margin-bottom:18px}.dropzone h2{font-size:24px;margin:0 0 5px;letter-spacing:-.02em}.dropzone p{margin:0 0 20px;color:var(--muted)}.primary-btn,.download-btn{border:0;border-radius:11px;background:var(--accent);color:#fff;font-weight:750;padding:12px 19px;transition:.15s ease}.primary-btn:hover,.download-btn:hover{background:var(--accent-dark);transform:translateY(-1px)}.dropzone-note{font-size:12px;color:#94a3b8;margin-top:16px}.editor-topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 22px;border-bottom:1px solid var(--line)}.file-name{font-weight:750;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:520px}.file-info{font-size:12px;color:var(--muted);margin-top:2px}.text-btn,.reset-btn{border:0;background:transparent;color:var(--accent);font-weight:700;padding:8px}.text-btn:hover,.reset-btn:hover{text-decoration:underline}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 310px;min-height:590px}.preview-panel{min-width:0;background:#eef2f7;padding:28px;display:flex;align-items:center;justify-content:center}.canvas-wrap{width:100%;height:100%;min-height:530px;display:flex;align-items:center;justify-content:center;border-radius:14px;background-color:#fff;background-image:linear-gradient(45deg,#f1f5f9 25%,transparent 25%),linear-gradient(-45deg,#f1f5f9 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#f1f5f9 75%),linear-gradient(-45deg,transparent 75%,#f1f5f9 75%);background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0;overflow:hidden}.canvas-wrap canvas{display:block;max-width:100%;max-height:530px;width:auto;height:auto;box-shadow:0 8px 24px rgba(15,23,42,.14)}.controls{padding:28px 24px;display:flex;flex-direction:column;gap:22px;border-left:1px solid var(--line)}.control-group{display:flex;flex-direction:column;gap:9px}.control-title{font-size:13px;font-weight:800;color:#475569;text-transform:uppercase;letter-spacing:.08em}.button-grid{display:grid;gap:9px}.button-grid.two{grid-template-columns:1fr 1fr}.control-btn{min-height:68px;background:var(--soft);border:1px solid var(--line);border-radius:12px;color:var(--text);font-weight:700;padding:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;transition:.15s ease}.control-btn span{font-size:22px;line-height:1}.control-btn:hover{border-color:#93c5fd;background:#eff6ff}.reset-btn{align-self:flex-start;padding-left:0;color:#64748b}.download-btn{width:100%;margin-top:auto;min-height:48px}.status{min-height:20px;text-align:center;color:var(--muted);font-size:12px}.error{margin:0 22px 22px;padding:13px 15px;border-radius:11px;background:var(--danger-bg);color:var(--danger);font-size:14px}.privacy-note{display:flex;align-items:flex-start;gap:11px;max-width:800px;margin:22px auto 0;padding:15px 18px;border:1px solid #dbeafe;background:#eff6ff;border-radius:13px;color:#334155;font-size:13px}.privacy-icon{color:#2563eb;font-weight:900}.info-section{max-width:900px;margin:72px auto 0}.info-section h2{text-align:center;font-size:28px;letter-spacing:-.025em;margin:0 0 26px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.steps article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;gap:14px}.steps article>span{flex:0 0 32px;height:32px;border-radius:50%;background:#eff6ff;color:var(--accent);display:grid;place-items:center;font-weight:800}.steps h3{font-size:16px;margin:1px 0 5px}.steps p{font-size:14px;color:var(--muted);margin:0}.faq{max-width:800px}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 18px;margin-bottom:10px}.faq summary{padding:17px 0;font-weight:700;cursor:pointer;list-style-position:outside}.faq p{color:var(--muted);font-size:14px;margin:0 0 17px}.site-footer{text-align:center;padding:28px 24px 38px;color:#94a3b8;font-size:13px}.site-footer a{color:#475569;text-decoration:none;font-weight:750}.site-footer a:hover{text-decoration:underline}:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:2px}@media(max-width:800px){.page-shell{padding-top:42px}.workspace{grid-template-columns:1fr}.controls{border-left:0;border-top:1px solid var(--line)}.canvas-wrap{min-height:360px}.canvas-wrap canvas{max-height:360px}.steps{grid-template-columns:1fr}.download-btn{margin-top:0}.editor-topbar{align-items:flex-start}.file-name{max-width:58vw}}@media(max-width:520px){.header-inner{padding:0 16px}.page-shell{padding:34px 14px 52px}.hero h1{font-size:36px}.hero p{font-size:16px}.dropzone{margin:12px;min-height:390px;padding:50px 18px}.editor-topbar{padding:15px;gap:10px}.text-btn{white-space:nowrap}.workspace .preview-panel{padding:14px}.controls{padding:22px 15px}.canvas-wrap{min-height:300px}.canvas-wrap canvas{max-height:300px}.button-grid.two{grid-template-columns:1fr 1fr}.control-btn{min-height:64px}.privacy-note{margin-left:0;margin-right:0}.info-section{margin-top:52px}.info-section h2{font-size:25px}.site-footer{padding-bottom:28px}}