:root{--sea-0: #020611;--sea-1: #04101c;--sea-2: #062236;--foam: #9be8ff;--panel: rgba(8, 19, 31, .92);--text: #eaf6ff;--muted: #6b8aa3}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:radial-gradient(ellipse at 50% 30%,#062236,#04101c 45%,#020611);font-family:Noto Sans CJK SC,Microsoft YaHei,PingFang SC,Inter,system-ui,sans-serif;color:var(--text)}.app{position:relative;width:100vw;height:100vh;overflow:hidden}#pixi-root{position:absolute;top:0;right:0;bottom:0;left:0}#pixi-root canvas{display:block}.topbar{position:absolute;top:0;left:0;right:0;padding:18px 28px;display:flex;align-items:baseline;gap:16px;pointer-events:none;z-index:10}.brand{font-size:26px;font-weight:700;letter-spacing:2px;text-shadow:0 0 18px rgba(103,232,249,.5)}.subtitle{font-size:13px;color:var(--muted);letter-spacing:1px}.hint{position:absolute;bottom:14px;left:50%;transform:translate(-50%);font-size:12px;color:var(--muted);letter-spacing:1px;pointer-events:none;z-index:10;white-space:nowrap}.forge-toggle{margin-left:auto;padding:6px 16px;background:#fbbf241f;border:1px solid rgba(251,191,36,.3);border-radius:8px;color:#fbbf24;font-size:13px;cursor:pointer;pointer-events:auto;letter-spacing:1px;transition:background .2s}.forge-toggle:hover{background:#fbbf2438}.forge-toggle.active{background:#fbbf2440;border-color:#fbbf2480}.reset-btn{padding:6px 16px;background:#67e8f91f;border:1px solid rgba(103,232,249,.3);border-radius:8px;color:#9be8ff;font-size:13px;cursor:pointer;pointer-events:auto;letter-spacing:1px;transition:background .2s}.reset-btn:hover{background:#67e8f938}.timeline{position:absolute;left:24px;right:24px;bottom:44px;z-index:15;pointer-events:none}.tl-dots{position:relative;height:36px;pointer-events:auto}.tl-dot-btn{position:absolute;top:0;transform:translate(-50%);display:flex;flex-direction:column;align-items:center;gap:3px;background:transparent;border:none;cursor:pointer;color:var(--text);padding:2px}.tl-dot-mark{width:10px;height:10px;border-radius:50%;box-shadow:0 0 10px currentColor;transition:transform .2s}.tl-dot-btn:hover .tl-dot-mark{transform:scale(1.3)}.tl-dot-btn.active .tl-dot-mark{transform:scale(1.4)}.tl-dot-name{font-size:11px;white-space:nowrap;color:var(--muted);transition:color .2s}.tl-dot-btn.active .tl-dot-name{color:#67e8f9;font-weight:600}.tl-dot-btn:hover .tl-dot-name{color:#9be8ff}.tl-infinity-mark{position:absolute;top:0;transform:translate(-50%,-15%);font-size:22px;font-family:Georgia,serif;color:#e0f7ff;text-shadow:0 0 12px rgba(255,255,255,.5);pointer-events:none}.infinity-hint{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:440px;background:var(--panel);border:1px solid rgba(255,255,255,.2);border-radius:18px;padding:30px 32px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 24px 80px #0009,0 0 60px #67e8f926;z-index:30;text-align:center;animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0;transform:translate(-50%,-45%)}to{opacity:1;transform:translate(-50%,-50%)}}.infinity-hint-title{font-size:42px;font-family:Georgia,serif;color:#fff;text-shadow:0 0 24px rgba(255,255,255,.5);margin-bottom:14px}.infinity-hint-body{font-size:14px;line-height:1.8;color:var(--text)}.forge-panel{position:absolute;left:24px;top:70px;width:380px;max-height:calc(100vh - 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48px);max-height:calc(100vh - 80px);overflow-y:auto;background:var(--panel);border:1px solid rgba(103,232,249,.2);border-radius:20px;padding:40px 44px 36px;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:0 24px 80px #0009,0 0 80px #67e8f91a;text-align:center;animation:introPanelIn .6s cubic-bezier(.22,1,.36,1)}@keyframes introPanelIn{0%{opacity:0;transform:translateY(24px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.intro-symbol{font-size:52px;font-family:Georgia,serif;color:#9be8ff80;text-shadow:0 0 30px rgba(103,232,249,.3);line-height:1;margin-bottom:4px}.intro-title{font-size:36px;font-weight:700;letter-spacing:6px;color:#fff;text-shadow:0 0 24px rgba(103,232,249,.4);margin:0 0 6px}.intro-subtitle{font-size:13px;color:var(--muted);letter-spacing:2px;margin-bottom:28px}.intro-section{text-align:left;margin-bottom:20px}.intro-section-title{font-size:15px;font-weight:600;color:#67e8f9;letter-spacing:1px;margin-bottom:8px;padding-left:12px;border-left:3px solid rgba(103,232,249,.4)}.intro-text{font-size:14px;line-height:1.85;color:var(--text);margin:0 0 10px;text-align:justify}.intro-btn{margin-top:12px;padding:12px 40px;background:#67e8f91f;border:1px solid rgba(103,232,249,.4);border-radius:10px;color:#9be8ff;font-size:15px;font-weight:600;letter-spacing:2px;cursor:pointer;transition:background .2s,border-color .2s,box-shadow .2s}.intro-btn:hover{background:#67e8f938;border-color:#67e8f999;box-shadow:0 0 24px #67e8f933}