.gpa-tool{box-sizing:border-box;width:100%;max-width:1000px;margin:24px auto;padding:28px;border:1px solid #e5e7eb;border-radius:18px;background:#fff;box-shadow:0 12px 35px rgba(15,23,42,.08);color:#111827;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}.gpa-tool *{box-sizing:border-box}
.gpa-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:20px}.gpa-head h2{margin:0 0 6px;font-size:28px;line-height:1.2;font-weight:750;letter-spacing:-.02em}.gpa-head p{margin:0;color:#6b7280;font-size:14px}.gpa-reset{border:1px solid #d1d5db;background:#fff;color:#374151;border-radius:9px;padding:9px 14px;font-weight:600;cursor:pointer}.gpa-reset:hover{background:#f9fafb}
.gpa-scale-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}.gpa-scale-row label{font-size:13px;font-weight:700}.gpa-scale-row select{height:40px;border:1px solid #d1d5db;border-radius:9px;padding:0 12px;background:#fff;color:#111827;font:inherit}
.gpa-table-wrap{overflow-x:auto;border:1px solid #e5e7eb;border-radius:12px}.gpa-table{width:100%;border-collapse:collapse;min-width:680px}.gpa-table th{padding:12px;text-align:left;background:#f8fafc;color:#4b5563;font-size:12px;font-weight:700;border-bottom:1px solid #e5e7eb}.gpa-table td{padding:10px 12px;border-bottom:1px solid #eef0f3}.gpa-table tr:last-child td{border-bottom:0}.gpa-table input,.gpa-table select{width:100%;height:40px;border:1px solid #d1d5db;border-radius:8px;padding:0 10px;background:#fff;color:#111827;font:inherit;outline:none}.gpa-table input:focus,.gpa-table select:focus{border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,.1)}.gpa-points{font-weight:700}.gpa-remove{border:0;background:transparent;color:#dc2626;font-weight:700;cursor:pointer;padding:6px}
.gpa-actions{display:flex;gap:10px;margin-top:15px;flex-wrap:wrap}.gpa-add{border:1px solid #d1d5db;background:#fff;color:#374151;border-radius:9px;padding:10px 16px;font-weight:700;cursor:pointer}.gpa-calculate{border:0;background:#2563eb;color:#fff;border-radius:9px;padding:10px 18px;font-weight:700;cursor:pointer}.gpa-calculate:hover{background:#1d4ed8}.gpa-add:hover{background:#f9fafb}
.gpa-error{min-height:20px;margin-top:12px;color:#dc2626;font-size:13px}.gpa-result{margin-top:8px;padding:22px;text-align:center;border:1px solid #e5e7eb;border-radius:14px;background:#f8fafc}.gpa-result>span{display:block;color:#6b7280;font-size:13px;margin-bottom:5px}.gpa-result>strong{display:block;font-size:48px;line-height:1;font-weight:800;letter-spacing:-.04em}.gpa-result-meta{display:flex;justify-content:center;gap:22px;margin-top:12px;color:#6b7280;font-size:12px}.gpa-result-meta b{color:#111827}.gpa-note{text-align:center;color:#9ca3af;font-size:12px;margin:14px 0 0}
@media(max-width:600px){.gpa-tool{padding:18px}.gpa-head h2{font-size:24px}.gpa-result>strong{font-size:40px}.gpa-result-meta{flex-direction:column;gap:5px}}