/* Template 11: Split Screen (双屏对撞 · 左右分屏交互) */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --bg: #0d0f1d;
  --surface: #171a33;
  --border: rgba(99, 102, 241, 0.25);
  --text: #f8fafc;
  --text-muted: #94a3b8;
}
* { margin:0; padding:0; box-sizing:border-box; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", sans-serif; line-height: 1.6; }
a { color: inherit; text-decoration: none; }

/* Sticky Mini Header */
.split-top-bar { background: rgba(13, 15, 29, 0.95); border-bottom: 1px solid var(--border); padding: 0.8rem 2rem; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 100; backdrop-filter: blur(10px); }
.split-top-bar img { height: 38px; display: block; }
.split-nav { display: flex; gap: 1.5rem; list-style: none; font-size: 0.9rem; }
.split-nav a:hover, .split-nav a.active { color: var(--primary-light); }

/* 50/50 Desktop Split Layout */
.split-container { display: grid; grid-template-columns: 1fr 1fr; min-height: calc(100vh - 60px); }
.split-left-pane { position: sticky; top: 60px; height: calc(100vh - 60px); padding: 4rem; display: flex; flex-direction: column; justify-content: center; background: radial-gradient(circle at 20% 40%, rgba(99, 102, 241, 0.15) 0%, transparent 70%), var(--bg); border-right: 1px solid var(--border); }
.split-left-pane h1 { font-size: 3rem; line-height: 1.2; font-weight: 800; margin-bottom: 1.5rem; }
.split-left-pane p { color: var(--text-muted); font-size: 1.15rem; line-height: 1.8; margin-bottom: 2.5rem; }
.split-dl-box { background: var(--surface); border: 1px solid var(--border); padding: 1.8rem; border-radius: 14px; }

.split-right-pane { padding: 4rem; overflow-y: auto; display: flex; flex-direction: column; gap: 4rem; }
.split-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 2.2rem; }
.split-card h3 { font-size: 1.4rem; color: #fff; margin-bottom: 0.8rem; }
.split-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

/* FAQ in Right Pane */
.split-faq-item { border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
.split-faq-item h4 { font-size: 1.05rem; color: var(--primary-light); margin-bottom: 0.5rem; }
.split-faq-item p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

@media (max-width: 992px) {
  .split-container { grid-template-columns: 1fr; }
  .split-left-pane { position: static; height: auto; padding: 2rem; border-right: none; border-bottom: 1px solid var(--border); }
  .split-right-pane { padding: 2rem; }
  .split-nav { display: none; }
}