:root{--bg:#f4f6fa;--card:#fff;--ink:#142033;--muted:#6c778a;--line:#dfe5ee;--accent:#335cff;--accent2:#2447d8;--danger:#c8344b;--ok:#11885b;--warn:#c47a0a;--shadow:0 16px 45px rgba(30,45,75,.09)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}button,input,select{font:inherit}.hidden{display:none!important}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top left,#e7ecff,transparent 38%),radial-gradient(circle at bottom right,#e5fff5,transparent 33%),#f5f7fb}.auth-card{width:min(420px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}.brand-mark{width:58px;height:58px;border-radius:17px;background:linear-gradient(135deg,var(--accent),#7d4dff);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:-1px}.brand-mark.small{width:42px;height:42px;border-radius:13px;font-size:14px}.auth-card h1{margin:18px 0 4px}.auth-card p{margin:0 0 24px;color:var(--muted)}label{display:block;font-weight:700;font-size:14px}input[type=password],select{width:100%;margin-top:8px;border:1px solid var(--line);border-radius:12px;padding:13px;background:#fff;color:var(--ink)}button{border:0;cursor:pointer}.primary{background:var(--accent);color:#fff;border-radius:13px;padding:14px 18px;font-weight:800;box-shadow:0 8px 20px rgba(51,92,255,.22)}.primary:hover{background:var(--accent2)}.primary:disabled{opacity:.55;cursor:not-allowed}.full{width:100%;margin-top:18px}.ghost{background:#fff;border:1px solid var(--line);border-radius:11px;padding:9px 13px;color:var(--ink);font-weight:700}.ghost:hover{border-color:#b9c4d4}.ghost.danger{color:var(--danger)}.form-error,.job-error{color:var(--danger);font-size:13px;margin-top:12px}.topbar{height:74px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1420px)/2));position:sticky;top:0;z-index:5}.brand{display:flex;align-items:center;gap:12px}.brand div{display:flex;flex-direction:column}.brand small{color:var(--muted);font-size:12px;margin-top:2px}.header-actions{display:flex;gap:8px}.page{width:min(1420px,calc(100% - 40px));margin:0 auto;padding:46px 0 70px}.hero{text-align:center;max-width:760px;margin:0 auto 34px}.eyebrow{font-size:12px;font-weight:900;letter-spacing:.12em;color:var(--accent)}.hero h1{font-size:clamp(34px,5vw,58px);letter-spacing:-.045em;margin:14px 0 10px}.hero p{color:var(--muted);font-size:17px;margin:0}.workspace{display:grid;grid-template-columns:430px 1fr;gap:22px;align-items:start}.tool-panel,.convert-card,.history-card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.tool-panel{padding:18px}.section-title{display:flex;align-items:center;justify-content:space-between}.section-title h2{font-size:18px;margin:0}.section-title span{font-size:12px;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:15px}.tool{text-align:left;padding:14px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink);min-height:74px}.tool b,.tool small{display:block}.tool small{color:var(--muted);margin-top:5px;font-size:11px;line-height:1.3}.tool:hover{border-color:#b7c3d8;background:#fafbff}.tool.active{border-color:var(--accent);background:#f2f5ff;box-shadow:inset 0 0 0 1px var(--accent)}.tool.active b{color:var(--accent)}.convert-card{padding:26px}.convert-head{display:flex;justify-content:space-between;gap:20px}.convert-head h2{margin:9px 0 5px;font-size:25px}.convert-head p{margin:0;color:var(--muted)}.badge{display:inline-block;background:#edf1ff;color:var(--accent);font-size:11px;font-weight:900;padding:6px 9px;border-radius:999px}.limit{font-size:12px;color:var(--muted);white-space:nowrap}.drop-zone{margin-top:22px;border:2px dashed #bdc8da;border-radius:17px;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;transition:.2s;background:#fafbfe;cursor:pointer}.drop-zone.drag{border-color:var(--accent);background:#f0f4ff}.drop-zone input{display:none}.upload-icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#e9eeff;color:var(--accent);font-size:26px;font-weight:900;margin-bottom:13px}.drop-zone small{color:var(--muted);margin-top:5px;font-weight:500}.file-summary{margin-top:14px;font-size:12px;color:var(--accent);font-weight:800}.options-box{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:18px}.option label{font-size:12px;color:var(--muted)}.notice{margin-top:18px;border-radius:12px;background:#fff8e8;color:#725019;padding:12px 14px;font-size:12px;line-height:1.55}.job-card{margin-top:18px;border:1px solid var(--line);border-radius:15px;padding:16px;background:#fbfcfe}.job-row{display:flex;align-items:center;justify-content:space-between}.job-row>div{display:flex;align-items:center;gap:10px}.job-row strong{font-size:13px}.status{font-size:10px;font-weight:900;text-transform:uppercase;padding:5px 8px;border-radius:999px}.status.pending,.status.processing{background:#fff0d8;color:var(--warn)}.status.completed{background:#e2f7ee;color:var(--ok)}.status.failed{background:#ffe6ea;color:var(--danger)}.progress{height:8px;background:#e8ecf2;border-radius:999px;overflow:hidden;margin-top:13px}.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),#7e56ff);transition:width .35s}.job-actions{display:flex;gap:8px;margin-top:13px}.download{display:inline-flex;text-decoration:none;background:var(--ok);color:#fff;border-radius:10px;padding:10px 13px;font-weight:800;font-size:13px}.history-card{margin-top:22px;padding:20px}.jobs-list{margin-top:14px}.history-row{display:grid;grid-template-columns:1.4fr .8fr .6fr auto;gap:12px;align-items:center;padding:12px 4px;border-top:1px solid var(--line);font-size:13px}.history-row:first-child{border-top:0}.history-row small{color:var(--muted);display:block;margin-top:3px}.empty{color:var(--muted);padding:18px 0;text-align:center}dialog{width:min(560px,calc(100% - 30px));border:0;border-radius:18px;padding:0;box-shadow:0 25px 80px rgba(15,25,45,.25)}dialog::backdrop{background:rgba(20,32,51,.48)}.dialog-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}.dialog-head h3{margin:0}.icon-button{background:transparent;font-size:24px}.health-list{padding:15px 20px 22px}.health-row{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:10px 0}.health-row:last-child{border-bottom:0}.health-ok{color:var(--ok);font-weight:800}.health-fail{color:var(--danger);font-weight:800}@media(max-width:980px){.workspace{grid-template-columns:1fr}.tool-grid{grid-template-columns:repeat(3,1fr)}.tool-panel{order:2}.convert-card{order:1}}@media(max-width:680px){.page{width:min(100% - 22px,1420px);padding-top:26px}.topbar{padding:0 12px}.brand small{display:none}.header-actions .ghost{padding:8px;font-size:12px}.hero{text-align:left}.hero h1{font-size:37px}.tool-grid{grid-template-columns:1fr 1fr}.convert-card{padding:17px}.convert-head{display:block}.limit{display:block;margin-top:8px}.options-box{grid-template-columns:1fr}.history-row{grid-template-columns:1fr auto}.history-row>span:nth-child(2),.history-row>span:nth-child(3){display:none}}