:root{--bg:#07080b;--panel:#11131ad1;--panel-strong:#0c0e14eb;--line:#ffffff1f;--line-strong:#ffffff38;--text:#f5f2ea;--muted:#9aa0ad;--accent:#e8b15a;--accent-soft:#e8b15a29;--radius:14px;--font:"Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;margin:0;overflow:hidden}#app,#app canvas{width:100%;height:100%;display:block;position:fixed;inset:0}#app canvas{touch-action:none}body.is-rotated{transform-origin:0 0;width:100vh;height:100vw;position:fixed;top:0;left:100%;transform:rotate(90deg)}button{color:inherit;cursor:pointer;font-family:inherit}button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}kbd{border:1px solid var(--line-strong);min-width:24px;height:24px;color:var(--text);font:600 12px/1 var(--font);background:#ffffff0f;border-bottom-width:2px;border-radius:6px;justify-content:center;align-items:center;padding:0 6px;display:inline-flex}.eyebrow{color:var(--accent);letter-spacing:.22em;margin:0 0 10px;font-size:11px;font-weight:700}.intro{z-index:50;visibility:visible;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:radial-gradient(at 50% 42%,#14182259,#040508e6 68%),linear-gradient(#0405088c,#040508eb);place-items:center;padding:24px;transition:opacity .45s;display:grid;position:fixed;inset:0}.intro.is-hidden{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .45s,visibility 0s linear .45s}.intro-card{border:1px solid var(--line);text-align:center;background:linear-gradient(160deg,#1a1d26eb,#0a0c11f0);border-radius:20px;width:min(620px,100%);padding:48px 44px 40px;box-shadow:0 30px 90px #0000008c,inset 0 1px #ffffff0f}.intro-card h1{letter-spacing:.12em;text-indent:.12em;margin:0;font-size:clamp(40px,7vw,64px);font-weight:700}.intro-lead{color:var(--muted);letter-spacing:.08em;margin:12px 0 26px;font-size:15px}.intro-keys{color:#c8ccd4;flex-wrap:wrap;justify-content:center;gap:10px 18px;margin:0 0 30px;font-size:13px;display:flex}.key-group{align-items:center;gap:4px;display:inline-flex}.btn-primary{color:#241708;letter-spacing:.14em;background:linear-gradient(#f0c47c,#d99b3f);border:1px solid #ffffff2e;border-radius:999px;min-width:200px;padding:14px 28px;font-size:16px;font-weight:700;transition:transform .18s,box-shadow .18s;box-shadow:0 12px 34px #e8b15a42}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 38px #e8b15a5c}.intro-tip{color:#777d89;margin:18px 0 0;font-size:12px}.sidebar{z-index:30;visibility:visible;flex-direction:column;gap:8px;transition:opacity .3s,visibility linear;display:flex;position:fixed;top:24px;right:24px}.side-btn{white-space:nowrap;border:1px solid var(--line);background:var(--panel);color:#d7dae1;letter-spacing:.06em;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-radius:10px;align-items:center;gap:10px;width:118px;padding:11px 14px;font-size:13px;transition:background .18s,border-color .18s,color .18s;display:flex}body.compact .side-btn{justify-content:center;width:44px;padding:11px}body.compact .side-btn span{display:none}.side-btn svg{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px}.side-btn:hover{border-color:var(--line-strong);color:#fff;background:#20242eeb}.nav-dock{z-index:35;border:1px solid var(--line);background:var(--panel-strong);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);opacity:0;visibility:hidden;pointer-events:none;border-radius:18px;width:min(920px,100% - 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