:root{--bg: #f5f7fa;--surface: #ffffff;--border: #d8dee6;--text: #1c2733;--muted: #5b6b7c;--accent: #0b5cad;--accent-hover: #0a4c8f;--error-bg: #fdecea;--error-text: #a12622;--ok-bg: #e8f5ec;--ok-text: #1e6b34}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.5}h1{font-size:1.35rem;margin:0}h2{font-size:1.05rem;margin:0 0 .75rem}header.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:.85rem 1.5rem;display:flex;align-items:baseline;gap:.75rem}header.topbar .version{color:var(--muted);font-size:.8rem}main{max-width:1200px;margin:0 auto;padding:1.5rem;display:flex;flex-direction:column;gap:1.25rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1.25rem}button,select{font:inherit}button.primary{background:var(--accent);color:#fff;border:none;border-radius:6px;padding:.55rem 1.2rem;cursor:pointer}button.primary:hover{background:var(--accent-hover)}button.primary:disabled{opacity:.5;cursor:default}select{padding:.45rem .6rem;border:1px solid var(--border);border-radius:6px;background:var(--surface)}.alert{border-radius:6px;padding:.7rem 1rem}.alert.error{background:var(--error-bg);color:var(--error-text)}.alert.ok{background:var(--ok-bg);color:var(--ok-text)}.dropzone{border:2px dashed var(--border);border-radius:8px;padding:2.5rem 1.5rem;text-align:center;color:var(--muted);cursor:pointer;transition:border-color .15s,background .15s}.dropzone.dragover,.dropzone:hover{border-color:var(--accent);background:#f0f6fc}.meta-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.75rem 1.5rem}.meta-grid .label{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.lead-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1rem}.lead-chart{border:1px solid var(--border);border-radius:6px;padding:.4rem .5rem .1rem;background:#fffdfa}.lead-chart .lead-name{font-weight:600;font-size:.85rem;padding-left:.25rem}.lead-chart .derived-tag{font-weight:400;font-size:.75rem;color:var(--muted)}.controls-row{display:flex;flex-wrap:wrap;align-items:end;gap:1rem}.controls-row label{display:flex;flex-direction:column;gap:.25rem;font-size:.85rem;color:var(--muted)}footer{text-align:center;color:var(--muted);font-size:.8rem;padding:1rem 0 2rem}