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:root{--navy-950:#051326;--navy-900:#0a1f3d;--navy-800:#0f2744;--navy-700:#1b3a60;--navy-600:#2a4e7c;--sky-600:#0284c7;--sky-500:#0ea5e9;--sky-400:#38bdf8;--sky-300:#7dd3fc;--sky-200:#bae6fd;--sky-100:#e0f2fe;--sky-50:#f0f9ff;--slate-900:#0f172a;--slate-800:#1e293b;--slate-700:#334155;--slate-600:#475569;--slate-500:#64748b;--slate-400:#94a3b8;--slate-300:#cbd5e1;--slate-200:#e2e8f0;--slate-100:#f1f5f9;--slate-50:#f8fafc;--white:#fff;--pure-black:#000;--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-card:#fff;--bg-card-hover:#fff;--bg-dark-banner:#0a1f3d;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--text-inverse:#fff;--border-light:#eaecf0;--border-subtle:#f2f4f7;--border-focus:#0284c7;--accent-primary:#0284c7;--accent-light:#f0f9ff;--accent-border:#bae6fd;--accent-hover:#0369a1;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-2xl:32px;--radius-pill:9999px;--shadow-sm:0 1px 2px 0 #1018280d;--shadow-card:0 4px 16px -2px #0a1f3d0d, 0 2px 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cubic-bezier(.16,1,.3,1);display:inline-flex}.btn-secondary:hover{background:var(--slate-50);border-color:var(--slate-300);color:var(--navy-900);transform:translateY(-1px)}.btn-accent{background:var(--sky-600);color:var(--white);border-radius:var(--radius-pill);justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:15px;font-weight:600;transition:all .25s cubic-bezier(.16,1,.3,1);display:inline-flex;box-shadow:0 2px 8px #0284c74d}.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 6px 16px #0284c766}.glass-nav{z-index:100;-webkit-backdrop-filter:blur(16px);background:#ffffffe0;border-bottom:1px solid #eaecf0cc;transition:all .3s;position:sticky;top:0}.perspective-1200{perspective:1200px}.preserve-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden}@keyframes floatSlow{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.animate-float{animation:4s ease-in-out infinite floatSlow}@keyframes 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.reader-back-btn{color:#f8fafc!important;background:#ffffff14!important;border-color:#ffffff24!important;box-shadow:0 2px 8px #0006!important}[data-theme=sepia] .reader-back-btn,.sepia-mode .reader-back-btn{color:#433422!important;background:#fbf7ee!important;border-color:#ded4c1!important;box-shadow:0 1px 3px #43342214!important}.reader-back-icon-wrap{color:#334155!important;background:#f1f5f9!important;border-radius:50%!important;flex-shrink:0!important;justify-content:center!important;align-items:center!important;width:22px!important;height:22px!important;transition:all .22s cubic-bezier(.16,1,.3,1)!important;display:flex!important}[data-theme=dark] .reader-back-icon-wrap,.dark-mode .reader-back-icon-wrap{color:#cbd5e1!important;background:#ffffff1f!important}[data-theme=sepia] .reader-back-icon-wrap,.sepia-mode .reader-back-icon-wrap{color:#6b5b48!important;background:#ece3d3!important}.reader-back-label{letter-spacing:-.01em!important;font-size:12px!important;font-weight:600!important;line-height:1!important;font-family:var(--font-sans)!important}.reader-back-icon{transition:transform .22s cubic-bezier(.16,1,.3,1)!important}.reader-back-btn:hover{color:#0284c7!important;background:#fff!important;border-color:#0284c7!important;transform:translateY(-1px)!important;box-shadow:0 4px 14px #0284c72e,0 1px 3px #0000000f!important}[data-theme=dark] .reader-back-btn:hover,.dark-mode .reader-back-btn:hover{color:#38bdf8!important;background:#ffffff1f!important;border-color:#38bdf8!important;box-shadow:0 4px 16px #38bdf840!important}.reader-back-btn:hover .reader-back-icon-wrap,[data-theme=dark] .reader-back-btn:hover .reader-back-icon-wrap,.dark-mode .reader-back-btn:hover .reader-back-icon-wrap{color:#fff!important;background:#0284c7!important}.reader-back-btn:hover .reader-back-icon{transform:translate(-2.5px)!important}.reader-back-btn:active{transform:translateY(0)!important;box-shadow:0 1px 2px #0284c71f!important}.reader-meta-divider{opacity:.8!important;background:#cbd5e1!important;flex-shrink:0!important;width:1px!important;height:12px!important;display:inline-block!important}.reader-breadcrumb-compact{color:#64748b!important;white-space:nowrap!important;text-overflow:ellipsis!important;align-items:center!important;gap:6px!important;font-size:11.5px!important;display:inline-flex!important;overflow:hidden!important}.reader-cat-tag{color:#0f172a!important;letter-spacing:-.01em!important;font-weight:600!important}[data-theme=dark] .reader-cat-tag{color:#f1f5f9!important}.reader-dot-sep{opacity:.35!important;font-size:10px!important}.reader-time-tag{color:#64748b!important;align-items:center!important;gap:4px!important;font-weight:450!important;display:inline-flex!important}.reader-time-icon{opacity:.6!important}.reader-toolbar-root{transition:top .35s cubic-bezier(.16,1,.3,1)!important}:root[data-nav-hidden=true] .reader-toolbar-root{top:0!important}.desktop-toc{transition:top .35s cubic-bezier(.16,1,.3,1)!important}:root[data-nav-hidden=true] .desktop-toc{top:76px!important}.book-stage-wrapper{width:100%;max-width:1140px;margin:0 auto;padding:12px 16px 48px}.book-top-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px;padding:0 4px;display:flex}.book-top-info{align-items:center;gap:10px;display:flex}.book-top-badge{color:#0284c7;text-transform:uppercase;letter-spacing:.04em;background:#0284c714;border:1px solid #0284c733;border-radius:9999px;align-items:center;gap:6px;padding:4px 11px;font-size:11.5px;font-weight:650;display:inline-flex}.book-top-counter{color:#64748b;font-size:13px;font-weight:550}[data-theme=dark] .book-top-counter{color:#94a3b8}.book-top-keys{color:#64748b;font-size:12px}[data-theme=dark] .book-top-keys{color:#94a3b8}.book-top-keys kbd{color:#0f172a;background:#f1f5f9;border:1px solid #cbd5e1;border-radius:4px;margin:0 2px;padding:1px 5px;font-family:inherit;font-size:11px;font-weight:600;display:inline-block}[data-theme=dark] .book-top-keys kbd{color:#f1f5f9;background:#ffffff1a;border-color:#ffffff29}.book-3d-scene{perspective:2000px;margin:0 auto;position:relative}.book-floating-leaf-btn{color:#0f172a;z-index:35;cursor:pointer;background:#fff;border:1px solid #cbd5e1;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;transition:all .22s cubic-bezier(.16,1,.3,1);display:flex;position:absolute;top:50%;transform:translateY(-50%);box-shadow:0 10px 25px -4px #0f172a26,0 4px 6px -2px #0f172a0d}.book-floating-leaf-btn.leaf-prev{left:-22px}.book-floating-leaf-btn.leaf-next{right:-22px}.book-floating-leaf-btn:hover{color:#fff;background:#0284c7;border-color:#0284c7;transform:translateY(-50%)scale(1.08);box-shadow:0 14px 30px #0284c759}[data-theme=dark] .book-floating-leaf-btn{color:#f1f5f9;background:#0f2038;border-color:#ffffff26;box-shadow:0 10px 25px #00000080}[data-theme=dark] .book-floating-leaf-btn:hover{color:#fff;background:#0284c7;border-color:#0284c7}.book-hardcover-shell{border:1px solid;border-radius:20px;padding:12px 14px 16px;transition:all .3s;position:relative;box-shadow:0 32px 72px -16px #05132673,0 16px 32px -8px #0513264d}.book-headband{z-index:15;background:repeating-linear-gradient(45deg,#0284c7,#0284c7 3px,#fff 3px 6px);border-radius:2px;width:40px;height:7px;position:absolute;left:50%;transform:translate(-50%);box-shadow:0 1px 3px #0000004d}.book-headband-top{top:6px}.book-headband-bottom{bottom:9px}.book-paper-block{perspective:2400px;transform-style:preserve-3d;border:1px solid;border-radius:12px;position:relative;overflow:visible;box-shadow:0 0 0 1px #0000000f,0 3px 0 -1px #f4f0e8,0 3px #0000001a,0 6px 0 -2px #ece6da,0 6px 0 -1px #00000014,0 9px 0 -3px #e3dcce,0 9px 0 -2px #0000000f,0 20px 40px -6px #00000038}[data-theme=sepia] .book-paper-block{box-shadow:0 0 0 1px #00000014,0 3px 0 -1px #ece0cc,0 3px #0000001f,0 6px 0 -2px #dfd0b7,0 6px 0 -1px #0000001a,0 9px 0 -3px #d3c0a4,0 9px 0 -2px #00000014,0 20px 40px -6px #3d280a4d}[data-theme=dark] .book-paper-block{box-shadow:0 0 0 1px #ffffff0f,0 3px 0 -1px #091524,0 3px #0000004d,0 6px 0 -2px #07101a,0 6px 0 -1px #00000040,0 9px 0 -3px #040910,0 9px 0 -2px #0003,0 24px 50px -6px #000000a6}.book-center-spine{pointer-events:none;z-index:10;background:linear-gradient(90deg,#0000 0%,#0000000a 25%,#00000029 48%,#00000052 50%,#00000029 52%,#0000000a 75%,#0000 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14px}.book-headband,.book-center-spine{display:none}.book-two-page-spread{flex-direction:column;min-height:auto;display:flex}.book-leaf-left{box-shadow:none;border-right:none;padding:32px 22px 20px}.book-leaf-right{box-shadow:none;padding:20px 22px 32px}.book-bottom-controls{justify-content:center}}@media (max-width:600px){.book-stage-wrapper{padding:8px 8px 36px}.book-top-keys{display:none}.book-hardcover-shell{border-radius:12px;padding:4px 6px 10px}.book-paper-block{border-radius:8px}.book-leaf-left{padding:24px 16px 16px}.book-leaf-right{padding:16px 16px 24px}.book-page-turn-btn{height:36px;padding:0 14px;font-size:12.5px}}.rv-word{vertical-align:top;margin-bottom:-.12em;padding-bottom:.12em;display:inline-block;overflow:hidden}.rv-word-inner{will-change:transform;display:inline-block}.rv-progress{z-index:1001;transform-origin:0;background:linear-gradient(90deg, var(--sky-600), var(--sky-400));pointer-events:none;height:3px;position:fixed;top:0;left:0;right:0}
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