:root{--bg:#f6f7fb;--panel:#fff;--text:#172033;--muted:#637083;--line:#d9e0ea;--brand:#1463ff;--brand-dark:#0f46b9;--ok:#11845b;--bad:#c9362c}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:Arial,Microsoft YaHei,sans-serif}a{color:inherit}.page-shell{min-height:100vh}.topbar{border-bottom:1px solid var(--line);z-index:10;background:#fffffff5;position:sticky;top:0}.topbar-inner{justify-content:space-between;align-items:center;gap:20px;max-width:1120px;margin:0 auto;padding:14px 20px;display:flex}.brand{color:var(--text);font-weight:700;text-decoration:none}.nav{color:var(--muted);align-items:center;gap:14px;font-size:14px;display:flex}.nav a{text-decoration:none}.nav-button{color:var(--muted);cursor:pointer;font:inherit;background:0 0;border:0;padding:0}.container{max-width:1120px;margin:0 auto;padding:36px 20px 64px}.hero{grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);align-items:start;gap:28px;display:grid}.eyebrow{color:var(--brand);margin:0 0 10px;font-size:14px;font-weight:700}h1{letter-spacing:0;margin:0 0 14px;font-size:42px;line-height:1.12}.lead{color:var(--muted);margin:0 0 22px;font-size:17px;line-height:1.7}.facts{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:26px;display:grid}.fact{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:78px;padding:14px}.fact strong{margin-bottom:4px;display:block}.fact span{color:var(--muted);font-size:14px;line-height:1.5}.tool-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:20px;box-shadow:0 18px 50px #1f2d3d14}.upload-zone{text-align:center;background:#f9fbff;border:2px dashed #adc0d8;border-radius:8px;padding:24px}.file-input{width:100%;margin-top:12px}.options{gap:12px;margin:18px 0;display:grid}.option-row{justify-content:space-between;align-items:center;gap:14px;font-size:14px;display:flex}.option-row input[type=number]{border:1px solid var(--line);border-radius:6px;width:92px;padding:8px}.button{background:var(--brand);color:#fff;cursor:pointer;border:0;border-radius:7px;width:100%;padding:12px 16px;font-size:15px;font-weight:700}.button:hover{background:var(--brand-dark)}.button:disabled{cursor:not-allowed;background:#9aa8bd}.download{text-align:center;background:var(--ok);color:#fff;border-radius:7px;margin-top:14px;padding:12px 16px;font-size:15px;font-weight:700;text-decoration:none;display:block}.progress{margin-top:16px}.bar{background:#e6ecf5;border-radius:999px;width:100%;height:10px;overflow:hidden}.bar span{background:var(--brand);height:100%;transition:width .25s;display:block}.status{color:var(--muted);margin-top:8px;font-size:14px}.error{color:var(--bad);background:#fff2f1;border:1px solid #ffd2cf;border-radius:8px;margin-top:14px;padding:10px 12px;font-size:14px}.logs{border:1px solid var(--line);max-height:180px;color:var(--muted);background:#fbfcfe;border-radius:8px;margin-top:14px;padding:10px;font-size:13px;overflow:auto}.logs p{margin:0 0 6px}.content-section{border:1px solid var(--line);background:#fff;border-radius:8px;margin-top:46px;padding:24px}.content-section h2{margin:0 0 14px;font-size:24px}.content-section p,.content-section li{color:var(--muted);line-height:1.75}.form-shell{border:1px solid var(--line);background:#fff;border-radius:8px;max-width:520px;margin:0 auto;padding:24px}.form-grid{gap:14px;display:grid}.form-grid label{color:var(--muted);gap:6px;font-size:14px;display:grid}.form-grid input{border:1px solid var(--line);border-radius:7px;width:100%;padding:11px 12px;font-size:15px}.account-grid{grid-template-columns:240px minmax(0,1fr);gap:20px;display:grid}.side-nav,.table-card{border:1px solid var(--line);background:#fff;border-radius:8px;padding:18px}.side-nav a{color:var(--muted);padding:10px 0;text-decoration:none;display:block}.data-table{border-collapse:collapse;width:100%;font-size:14px}.data-table th,.data-table td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:10px 8px}.data-table th{color:var(--muted)}@media (max-width:860px){.account-grid,.hero{grid-template-columns:1fr}h1{font-size:32px}.facts{grid-template-columns:1fr}}