:root{--bg:#151f33;--bg-accent:#20314f;--panel:#1d2940;--panel-alt:#24344f;--panel-elevated:#2b3f5f;--border:#466182;--border-strong:#6f89ab;--text:#edf3ff;--muted:#b9c8e0;--dim:#8da2c2;--accent:#58cbff;--green:#4dd4a2;--orange:#ffc06a;--red:#ff8b8b;--purple:#cfadff;--shadow:0 18px 40px rgba(10,17,31,0.35);}*{box-sizing:border-box;margin:0;padding:0;}html,body{min-height:100%;}body{font-family:'M PLUS 1p',sans-serif;background:radial-gradient(circle at top,rgba(88,203,255,0.12),transparent 28%),linear-gradient(180deg,var(--bg-accent),var(--bg));color:var(--text);height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden;}button{font:inherit;}button,a,[tabindex]{-webkit-tap-highlight-color:transparent;}button:focus-visible{outline:3px solid rgba(88,203,255,0.38);outline-offset:2px;}header{padding:14px 20px;border-bottom:1px solid rgba(111,137,171,0.24);display:flex;align-items:center;gap:12px;background:rgba(29,41,64,0.88);backdrop-filter:blur(10px);flex-shrink:0;}.logo{font-family:'Share Tech Mono',monospace;font-size:1.2rem;color:var(--accent);letter-spacing:0.08em;white-space:nowrap;}.logo span{color:var(--green);}.header-info{margin-left:auto;text-align:right;min-width:0;}.chapter-label{font-size:0.8rem;color:var(--text);font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}.chapter-sub{font-size:0.72rem;color:var(--muted);white-space:nowrap;}.progress-bar{height:4px;background:rgba(111,137,171,0.18);flex-shrink:0;}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--green));transition:width 0.45s ease;}.game-layout{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden;}.graph-panel,.story-panel{min-height:0;}.graph-panel{padding:16px;display:flex;flex-direction:column;gap:10px;background:rgba(36,52,79,0.94);overflow:hidden;position:relative;border-bottom:1px solid rgba(111,137,171,0.22);}.graph-panel::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0.05),transparent 45%),radial-gradient(circle at top right,rgba(207,173,255,0.08),transparent 34%);pointer-events:none;}.graph-header,.story-header{display:flex;align-items:center;justify-content:space-between;gap:12px;position:relative;z-index:1;}.graph-title,.story-title{font-size:0.72rem;color:var(--muted);letter-spacing:0.14em;text-transform:uppercase;font-family:'Share Tech Mono',monospace;}.graph-toggle,.story-toggle{background:rgba(255,255,255,0.04);border:1px solid rgba(111,137,171,0.34);color:var(--text);font-size:0.75rem;padding:6px 10px;border-radius:999px;cursor:pointer;font-family:'Share Tech Mono',monospace;transition:background 0.18s ease,border-color 0.18s ease,color 0.18s ease,transform 0.18s ease;}.graph-toggle:hover,.story-toggle:hover{background:rgba(88,203,255,0.14);border-color:rgba(88,203,255,0.45);}.graph-toggle:active,.story-toggle:active{transform:translateY(1px);}.graph-panel.collapsed .graph-wrap,.graph-panel.collapsed #legend,.story-panel.collapsed .story-scroll{display:none;}.graph-wrap{position:relative;z-index:1;flex:1;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:220px;height:clamp(260px,38vh,400px);padding:2px 0 8px;}svg#graph{width:100%;height:100%;min-width:0;display:block;overflow:hidden;flex:0 0 auto;}svg#graph .graph-frame{display:block;}#legend{position:relative;z-index:1;display:flex;gap:10px;flex-wrap:wrap;}.legend-item{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;background:rgba(17,24,39,0.24);border:1px solid rgba(111,137,171,0.18);box-shadow:inset 0 1px 0 rgba(255,255,255,0.04);}.legend-swatch{width:20px;height:4px;border-radius:999px;background:var(--legend-color);}.legend-label{font-size:0.76rem;color:var(--text);font-family:'Share Tech Mono',monospace;}.story-panel{display:flex;flex-direction:column;overflow:hidden;flex:1;background:rgba(29,41,64,0.94);}.story-header{padding:10px 16px;border-bottom:1px solid rgba(111,137,171,0.2);background:rgba(29,41,64,0.98);}.story-scroll{flex:1;overflow-y:auto;min-height:0;display:flex;flex-direction:column;}.scene-box{padding:20px;border-bottom:1px solid rgba(111,137,171,0.2);background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent 100%),rgba(29,41,64,0.82);}.scene-box.narration{border-left:4px solid rgba(88,203,255,0.55);padding-left:16px;}.scene-character{display:inline-flex;align-items:center;gap:6px;font-size:0.72rem;color:var(--accent);letter-spacing:0.12em;margin-bottom:8px;font-family:'Share Tech Mono',monospace;}.scene-character--narration{color:var(--muted);}.scene-text{font-size:0.93rem;line-height:1.95;color:var(--text);white-space:pre-wrap;}.scene-text .cmd{font-family:'Share Tech Mono',monospace;color:#102238;background:rgba(77,212,162,0.9);padding:1px 6px;border-radius:6px;}.terminal-output{margin-top:14px;padding:12px 14px;background:rgba(12,18,30,0.96);border:1px solid rgba(111,137,171,0.32);border-radius:14px;box-shadow:inset 0 1px 0 rgba(255,255,255,0.04);font-family:'Share Tech Mono',monospace;font-size:0.8rem;line-height:1.65;color:var(--muted);white-space:pre;overflow-x:auto;display:none;}.terminal-output.show{display:block;}.choices-box{padding:14px 16px 10px;display:flex;flex-direction:column;gap:8px;background:rgba(29,41,64,0.96);flex-shrink:0;}.choice-btn{background:rgba(255,255,255,0.03);border:1px solid rgba(111,137,171,0.24);color:var(--text);padding:12px 14px;text-align:left;cursor:pointer;border-radius:14px;transition:border-color 0.18s ease,background 0.18s ease,transform 0.18s ease,color 0.18s ease,opacity 0.18s ease;display:flex;align-items:flex-start;gap:10px;box-shadow:inset 0 1px 0 rgba(255,255,255,0.03);}.choice-btn:hover{border-color:rgba(88,203,255,0.48);background:rgba(88,203,255,0.1);}.choice-btn:active{transform:translateY(1px);}.choice-btn:disabled{cursor:default;}.choice-btn.correct{border-color:rgba(77,212,162,0.72);background:rgba(77,212,162,0.16);color:#f1fff9;}.choice-btn.wrong{border-color:rgba(255,139,139,0.7);background:rgba(255,139,139,0.16);color:#fff4f4;}.choice-btn.disabled{opacity:0.42;}.choice-btn--command{font-family:'Share Tech Mono',monospace;font-size:0.82rem;}.choice-btn--concept{font-size:0.84rem;}.choice-prefix{flex:0 0 auto;min-width:1.5rem;color:var(--muted);font-size:0.72rem;font-family:'Share Tech Mono',monospace;padding-top:2px;}.choice-btn--concept .choice-prefix{display:inline-flex;align-items:center;justify-content:center;width:1.5rem;min-width:1.5rem;height:1.5rem;padding-top:0;border-radius:999px;background:rgba(255,255,255,0.08);color:var(--text);}.choice-body{flex:1;line-height:1.65;}.feedback-box{margin:0 16px;padding:14px 16px;font-size:0.82rem;line-height:1.8;display:none;border:1px solid rgba(111,137,171,0.22);border-radius:14px;white-space:pre-wrap;flex-shrink:0;}.feedback-box.show{display:block;}.feedback-box.ok{color:#eafff4;background:rgba(77,212,162,0.14);border-color:rgba(77,212,162,0.42);}.feedback-box.ng{color:#fff1f1;background:rgba(255,139,139,0.14);border-color:rgba(255,139,139,0.38);}.next-btn{margin:12px 16px 16px;padding:12px 16px;background:linear-gradient(135deg,var(--accent),#8be6ff);color:#102238;border:none;font-weight:800;font-size:0.84rem;cursor:pointer;border-radius:14px;display:none;box-shadow:var(--shadow);transition:transform 0.18s ease,box-shadow 0.18s ease,filter 0.18s ease;flex-shrink:0;}.next-btn:hover{filter:brightness(1.04);transform:translateY(-1px);}.next-btn:active{transform:translateY(1px);}.next-btn.show{display:block;}#title-screen,#clear-screen{position:fixed;inset:0;background:radial-gradient(circle at top,rgba(88,203,255,0.16),transparent 26%),linear-gradient(180deg,var(--bg-accent),var(--bg));z-index:100;}#title-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;}.title-logo{font-family:'Share Tech Mono',monospace;font-size:3rem;color:var(--accent);letter-spacing:0.05em;text-shadow:0 0 32px rgba(88,203,255,0.18);animation:flicker 4s infinite;}.title-logo span{color:var(--green);}.title-sub,.clear-sub{font-size:0.88rem;color:var(--muted);letter-spacing:0.08em;text-align:center;padding:0 20px;line-height:1.8;}.title-buttons{display:flex;flex-direction:column;gap:10px;align-items:center;margin-top:16px;}.start-btn,.resume-btn{padding:12px 42px;border-radius:999px;border:1px solid rgba(111,137,171,0.34);background:rgba(255,255,255,0.04);color:var(--text);font-family:'Share Tech Mono',monospace;cursor:pointer;letter-spacing:0.12em;transition:background 0.2s ease,border-color 0.2s ease,color 0.2s ease,transform 0.2s ease;}.start-btn{border-color:rgba(88,203,255,0.58);color:var(--accent);font-size:0.95rem;}.resume-btn{font-size:0.8rem;display:none;}.start-btn:hover,.resume-btn:hover{background:rgba(88,203,255,0.16);border-color:rgba(88,203,255,0.7);color:#f8fbff;transform:translateY(-1px);}#clear-screen{display:none;flex-direction:column;align-items:center;justify-content:center;gap:16px;}#clear-screen.show{display:flex;}.clear-title{font-family:'Share Tech Mono',monospace;font-size:1.9rem;color:var(--green);letter-spacing:0.08em;}.stat-row{display:flex;gap:40px;margin-top:10px;}.stat{text-align:center;}.stat-num{font-family:'Share Tech Mono',monospace;font-size:2rem;color:var(--accent);}.stat-label{font-size:0.74rem;color:var(--muted);margin-top:4px;}@media(min-width:768px){.game-layout{flex-direction:row;}.graph-panel{flex:1.45;border-right:1px solid rgba(111,137,171,0.22);border-bottom:none;}.graph-panel.collapsed{flex:0 0 112px;}.story-panel{flex:0 0 min(40vw,520px);min-width:380px;max-width:540px;}.story-panel.collapsed{flex:0 0 108px;min-width:108px;}.graph-wrap{min-height:320px;height:clamp(340px,50vh,560px);}.graph-toggle,.story-toggle{display:none;}}@media(max-width:767px){.graph-panel{max-height:min(46vh,360px);}.graph-panel.collapsed{max-height:58px;}.story-panel.collapsed{max-height:60px;}.graph-wrap{min-height:220px;height:clamp(220px,34vh,300px);overflow:auto;justify-content:flex-start;align-items:flex-start;padding-bottom:12px;scrollbar-gutter:stable both-edges;}svg#graph{width:100%;height:auto;min-width:100%;}svg#graph .graph-frame{display:none;}.scene-box,.choices-box{padding-left:14px;padding-right:14px;}.feedback-box,.next-btn{margin-left:14px;margin-right:14px;}.title-logo{font-size:2.25rem;}}@keyframes flicker{0%,93%,100%{opacity:1;}94%{opacity:0.56;}95%{opacity:1;}96%{opacity:0.68;}}::-webkit-scrollbar{width:8px;height:8px;}::-webkit-scrollbar-track{background:transparent;}::-webkit-scrollbar-thumb{background:rgba(111,137,171,0.34);border-radius:999px;}