/* ================== 开场动画 ================== */
#intro-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:#000;z-index:500;display:none;flex-direction:column;align-items:center;justify-content:center;padding:20px 10px}
#intro-canvas{background:#000;border:2px solid #3a3a5a;border-radius:8px;width:100%;max-width:360px;height:auto;transition:opacity .5s ease;box-shadow:0 0 30px rgba(0,100,255,.2)}
#intro-text{color:#fff;font-size:16px;text-align:center;line-height:1.6;padding:15px;min-height:80px;transition:opacity .3s ease;text-shadow:1px 1px 2px #000;background:linear-gradient(to top, rgba(0,0,0,0.8), transparent);width:100%;max-width:360px;margin-top:-60px;z-index:10;border-radius:0 0 8px 8px;white-space:pre-line}
#intro-controls{display:flex;gap:15px;flex-wrap:wrap;justify-content:center;margin-top:30px;width:100%;max-width:360px}
#intro-controls button{background:linear-gradient(180deg,#2a2a5a,#1a1a3e);border:1px solid #5a5a8a;color:#aed6f1;padding:12px 20px;border-radius:6px;font-size:15px;flex:1;font-weight:bold;box-shadow:0 4px 0 #0f0f1e;transition:all .1s}
#intro-controls button:active{transform:translateY(4px);box-shadow:0 0 0 #0f0f1e}
#scene-indicator{color:#666;font-size:12px;margin-top:15px;letter-spacing:2px}

/* 创作者信息条 */
#intro-credits{width:100%;max-width:360px;margin-top:18px;padding:10px 8px;background:linear-gradient(180deg,rgba(42,42,90,0.5),rgba(15,15,35,0.5));border:1px solid #3a3a5a;border-radius:8px;text-align:center;box-shadow:inset 0 0 10px rgba(0,0,0,0.5)}
#intro-credits .ic-title{color:#ffd700;font-size:12px;font-weight:bold;letter-spacing:3px;margin-bottom:6px;text-shadow:1px 1px 2px #000}
#intro-credits .ic-row{display:flex;justify-content:center;align-items:baseline;gap:8px;margin:3px 0;font-size:13px;line-height:1.4}
#intro-credits .ic-role{color:#aed6f1;font-size:11px;font-weight:bold;white-space:nowrap}
#intro-credits .ic-name{color:#fff;font-weight:bold;text-shadow:1px 1px 2px #000}
#intro-credits .ic-copy{margin-top:8px;padding-top:6px;border-top:1px dashed #3a3a5a;color:#b8860b;font-size:11px;font-weight:bold;letter-spacing:1px}