* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: #1e293b; font-family: 'Microsoft YaHei', sans-serif; }
.bg-animation { position: fixed; inset: 0; z-index: -1; background: linear-gradient(145deg, #eff8ff, #e6f5f1 55%, #f8fafc); }
.container { max-width: 1400px; margin: 0 auto; padding: 24px 20px 40px; }
.glass-box { background: rgba(255,255,255,.92); border: 1px solid #dce7ed; border-radius: 8px; box-shadow: 0 8px 24px rgba(15,76,129,.08); }
.top-bar { display: flex; align-items: center; gap: 20px; padding: 16px 22px; margin-bottom: 20px; }
.top-bar h1 { margin: 0; font-size: 24px; color: #0f4c81; }
.back-btn { flex: none; color: #0277a9; text-decoration: none; font-weight: bold; }
.back-btn:hover { color: #075985; }
.experiment-area { display: grid; grid-template-columns: minmax(285px, 320px) minmax(0, 1fr); gap: 20px; align-items: start; }
.control-panel { min-width: 0; padding: 22px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; }
h2 { margin: 0; font-size: 19px; color: #0f4c81; }
.control-panel h2 { padding-bottom: 12px; border-bottom: 1px solid #dce7ed; }
.control-group { min-width: 0; margin: 0; padding: 0; border: 0; }
.control-group label, .control-group legend { display: block; margin-bottom: 8px; font-size: 14px; font-weight: bold; color: #334155; }
.control-group input[type="text"], .control-group input[type="number"], .control-group select { display: block; width: 100%; min-height: 40px; padding: 8px 10px; border: 1px solid #b8cbd5; border-radius: 6px; background: white; color: #1e293b; font: inherit; }
.control-group input:focus, .control-group select:focus { outline: 2px solid #42a6b5; outline-offset: 1px; }
.control-group input:disabled { background: #edf2f4; color: #52636c; }
.field-hint { margin: 6px 0 0; font-size: 12px; line-height: 1.5; color: #64748b; }
.segmented-control { min-width: 0; width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 9px; border: 1px solid #b8cbd5; border-radius: 6px; overflow: hidden; }
.segmented-control label { margin: 0; cursor: pointer; }
.segmented-control label + label { border-left: 1px solid #b8cbd5; }
.segmented-control input { position: absolute; opacity: 0; }
.segmented-control span { display: block; padding: 9px 5px; text-align: center; font-size: 13px; font-weight: normal; }
.segmented-control input:checked + span { background: #0f6681; color: white; font-weight: bold; }
.segmented-control input:focus-visible + span { outline: 2px solid #f59e0b; outline-offset: -2px; }
.run-button { min-height: 43px; border: 0; border-radius: 6px; background: #0f6681; color: white; font-size: 15px; font-weight: bold; cursor: pointer; }
.run-button:hover { background: #07516b; }
.run-button i { margin-right: 6px; }
.message { min-height: 24px; margin: -6px 0 0; font-size: 13px; line-height: 1.5; color: #166534; }
.message.error { color: #b42318; }
.theory-box { padding: 14px; border-left: 4px solid #21a89a; border-radius: 4px; background: #effaf6; color: #24544f; }
.theory-box h3 { margin: 0 0 7px; font-size: 15px; }
.theory-box p { margin: 0; font-size: 13px; line-height: 1.7; }
.theory-box code { white-space: nowrap; }
.contact-box { padding-top: 14px; border-top: 1px solid #dce7ed; color: #24544f; }
.contact-box h3 { margin: 0 0 8px; font-size: 15px; color: #0f6681; }
.contact-box p { margin: 5px 0; font-size: 13px; line-height: 1.5; overflow-wrap: anywhere; }
.contact-box i { margin-right: 4px; }
.results-panel { min-width: 0; display: grid; gap: 16px; }
.summary-panel { padding: 18px 20px; }
.summary-panel h2 { margin-bottom: 14px; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 18px; margin: 0; }
.metrics div { min-width: 0; }
.metrics dt { font-size: 12px; color: #64748b; }
.metrics dd { margin: 4px 0 0; overflow-wrap: anywhere; font-size: 14px; font-weight: bold; color: #184c61; }
.charts-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.chart-panel { min-width: 0; padding: 16px; }
.chart-panel h2 { font-size: 16px; }
.chart { width: 100%; height: 265px; }
@media (max-width: 1100px) { .metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); } .charts-grid { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .container { padding: 12px; } .top-bar { flex-wrap: wrap; gap: 8px 16px; padding: 14px; } .top-bar h1 { font-size: 19px; } .experiment-area { grid-template-columns: minmax(0, 1fr); } .control-panel { padding: 16px; } .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } }