/* 原始动画逻辑样式 - 严禁修改 ID 和 宽高 */
div#total { width: 900px; height: 500px; border: 2px solid #3B82F6; border-radius: 12px; box-sizing: border-box; overflow: hidden; position: relative !important; }
div#canvas { width: 600px; height: 500px; background-color: #f8f9fa; }
div#panel { left: 600px; width: 300px; height: 500px; background-color: #ffffff; border-left: 1px solid #e2e8f0; } 
.pos1 { left: 10px; }
.pos2 { left: 50px; }
button.b1 { margin-left: 15px; width: 125px; background-color: #00ffff; border: 1px solid #cbd5e1; border-radius: 4px; cursor: pointer; }
button.b2 { margin-left: 15px; width: 25px; background-color: #ffffff; border: 1px solid #cbd5e1; border-radius: 4px; cursor: pointer; }
button.b3 { margin-left: 230px; width: 25px; background-color: #fff000; border: 1px solid #cbd5e1; border-radius: 4px; cursor: pointer; }
button.b4 { margin-left: 15px; width: 25px; background-color: #fff000; border: 1px solid #cbd5e1; border-radius: 4px; cursor: pointer; }
select.s1 { left: 130px; width: 160px; border: 1px solid #cbd5e1; border-radius: 4px; padding: 2px; }
select.s2 { width: 280px; border: 1px solid #cbd5e1; border-radius: 4px; padding: 4px; margin-left: 10px; }

/* 页面美化样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Segoe UI", "Microsoft YaHei", -apple-system, sans-serif;
    background: #F1F5F9;
    color: #1E293B;
    line-height: 1.8;
    }
.container { margin: 20px; }
.card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    padding: 50px;
    border: 1px solid #E2E8F0;
}
h1 {
    text-align: center;
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 30px;
    color: #0F172A;
    letter-spacing: -0.025em;
}
h2 {
    font-size: 22px;
    color: #2563EB;
    margin: 30px 0 15px;
    padding-left: 10px;
    border-left: 4px solid #2563EB;
}
p {
    font-size: 17px;
    color: #334155;
    margin-bottom: 20px;
    text-align: justify;
}
ul {
    padding-left: 25px;
    margin-bottom: 20px;
}
li {
    font-size: 16px;
    color: #475569;
    margin-bottom: 10px;
}
.highlight {
    color: #2563EB;
    font-weight: 600;
}

/* 仿真器容器 */
.sim-wrapper {
    justify-content: center;
    margin: 40px 0;
    }
#total {
    transform-origin: center top;
    flex-shrink: 0;
}

/* 响应式适配 */
@media (max-width: 950px) {
    #total { /* scale removed */ }
}
@media (max-width: 850px) {
    #total { /* scale removed */ }
    .card { padding: 30px; }
}
@media (max-width: 720px) {
    #total { /* scale removed */ }
    h1 { font-size: 24px; }
}
@media (max-width: 480px) {
    #total { /* scale removed */ }
    body { padding: 20px 10px; }
}