:root{--background:#f7f8f7;--foreground:#1f2427;--muted:#677279;--line:#dce2df;--panel:#ffffff;--panel-soft:#f1f4f3;--accent:#18a8b8;--accent-dark:#0c7181;--danger:#b3261e;--success:#156f42;--shadow:0 18px 42px rgba(27,35,38,0.11)}*{box-sizing:border-box}html{background:var(--background);color:var(--foreground);font-family:Arial,Helvetica,sans-serif}body{margin:0;min-width:320px}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.72}.modal-open{overflow:hidden}.site-shell{margin:0 auto;max-width:1360px;padding:48px clamp(20px,5vw,64px) 72px}.dataset-header{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:34px}.dataset-header h1{font-size:clamp(48px,8vw,88px);letter-spacing:0;line-height:.92;margin:0 0 14px}.dataset-header p{color:var(--muted);font-size:18px;line-height:1.55;margin:0;max-width:460px}.version-badge{background:#e7ecea;border-radius:4px;color:#4c5559;display:inline-flex;font-size:15px;font-weight:700;padding:9px 18px}.dataset-layout{display:grid;grid-gap:44px;gap:44px;grid-template-columns:minmax(0,1fr) 360px;align-items:start}.description-panel{background:var(--panel);border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow);min-height:410px;padding:clamp(28px,4vw,48px)}.section-title-row{align-items:center;display:grid;grid-gap:24px;gap:24px;grid-template-columns:1fr auto 1fr;margin-bottom:8px}.title-rule{background:var(--line);height:1px}.section-icon{align-items:center;background:var(--foreground);border-radius:5px;color:#ffffff;display:inline-flex;font-size:14px;font-weight:800;height:52px;justify-content:center;letter-spacing:0;width:52px}.description-panel h2,.details-panel h2{font-size:28px;letter-spacing:0;line-height:1.2;margin:0 0 28px}.description-panel 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h2{font-size:26px;letter-spacing:0;line-height:1.25;margin:0}.icon-button{align-items:center;background:transparent;border:0;border-radius:5px;color:#333b3f;display:inline-flex;font-size:28px;font-weight:800;height:44px;justify-content:center;line-height:1;width:44px}.icon-button:hover{background:var(--panel-soft)}.modal-body{padding:28px}.modal-body li,.modal-body p{color:#2f383d;font-size:16px;line-height:1.58}.modal-body p{margin:0 0 18px}.modal-body ul{margin:0 0 26px 22px;padding:0}.success-panel{display:grid;grid-gap:16px;gap:16px;justify-items:start;padding:8px 0 4px}.success-panel h3{color:var(--success);font-size:26px;line-height:1.2;margin:0}.success-panel p{margin:0}.request-form{display:grid;grid-gap:18px;gap:18px}.field{display:grid;grid-gap:8px;gap:8px}.field span{font-weight:800}.field strong{color:var(--danger);margin-left:4px}.field input,.field textarea{background:#ffffff;border:1px solid #cfd7d3;border-radius:5px;color:var(--foreground);min-height:48px;padding:13px 15px;width:100%}.field textarea{line-height:1.5;min-height:118px;resize:vertical}.checkbox-field input:focus,.field input:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(24,168,184,.16);outline:0}.field input::placeholder,.field textarea::placeholder{color:#8a9499}.field-error{color:var(--danger);font-size:14px;line-height:1.45;margin:0}.checkbox-field{align-items:flex-start;display:grid;grid-gap:12px;gap:12px;grid-template-columns:20px minmax(0,1fr)}.checkbox-field input{height:18px;margin:2px 0 0;width:18px}.checkbox-field span{color:#2f383d;font-size:15px;line-height:1.5}.form-actions{align-items:center;display:flex;gap:12px;justify-content:flex-end;padding-top:6px}@media (max-width:900px){.site-shell{padding-top:34px}.dataset-header{align-items:flex-start;flex-direction:column;gap:20px}.dataset-layout{grid-template-columns:1fr}.details-panel{order:-1}}@media (max-width:620px){.site-shell{padding-left:16px;padding-right:16px}.dataset-header h1{font-size:52px}.description-panel{padding:24px 18px}.section-title-row{gap:14px}.section-icon{height:46px;width:46px}.description-panel h2,.details-panel h2{font-size:24px}.description-panel p{font-size:16px}.modal-backdrop{padding:0}.request-modal{border-radius:0;min-height:100vh}.modal-body,.modal-header{padding-left:18px;padding-right:18px}.modal-header h2{font-size:22px}.form-actions{align-items:stretch;flex-direction:column-reverse}.form-actions .primary-button,.form-actions .secondary-button{width:100%}}