.theme-dark{--color-bg: #050505;--color-text: #e8e4dc;--color-text-muted: #7a756b;--color-text-dim: #4a4640;--color-accent: #b48c64;--color-rose: #c97b84;--color-border: rgba(180,140,100,.15)}.theme-light{--color-bg: #f4f1eb;--color-text: #1a1815;--color-text-muted: #5c574e;--color-text-dim: #8a847a;--color-accent: #8b6914;--color-rose: #a65d68;--color-border: rgba(139,105,20,.12)}body{margin:0;padding:0}.concept-cloud{min-height:100vh;background:var(--color-bg);color:var(--color-text);display:flex;flex-direction:column}.cloud-fixed-top{position:fixed;top:0;left:0;right:0;background:var(--color-bg);border-bottom:1px solid var(--color-border);z-index:100;box-shadow:0 8px 32px #0006,0 0 60px #b48c6414,0 0 100px #b48c640a}.background-logo{position:absolute;width:500px;height:500px;top:50%;left:50%;transform:translate(-50%,-50%);animation:logo-rotate 120s linear infinite;opacity:.15;z-index:0;pointer-events:none}@keyframes logo-rotate{0%{transform:translate(-50%,-50%) rotate(0)}to{transform:translate(-50%,-50%) rotate(360deg)}}@keyframes spectrum-pulse{0%,to{filter:brightness(1) saturate(1)}50%{filter:brightness(1.4) saturate(1.3)}}.logo-circle{stroke:url(#spectrum-gradient);stroke-width:1;fill:none;opacity:1;animation:spectrum-pulse 4s ease-in-out infinite}.logo-petal{stroke:url(#spectrum-gradient);stroke-width:1.5;fill:none;opacity:1;animation:spectrum-pulse 4s ease-in-out infinite}.logo-center{fill:url(#spectrum-gradient);opacity:1;animation:spectrum-pulse 4s ease-in-out infinite}.theme-toggle-btn{position:absolute;top:1rem;right:1rem;background:transparent;border:1px solid var(--color-border);border-radius:50%;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--color-accent);transition:all .3s ease;z-index:10}.theme-toggle-btn:hover{background:#b48c641a;border-color:var(--color-accent)}.article-display{padding:3rem 2rem;display:flex;flex-direction:column;align-items:center;gap:1.5rem;position:relative;overflow:hidden;min-height:200px}.article-number-badge{font-family:Courier New,monospace;font-size:.875rem;font-weight:600;color:var(--color-accent);background:#b48c641a;padding:.4rem 1rem;border-radius:20px;border:1px solid var(--color-border);position:relative;z-index:1}.article-title{font-family:"Noto Serif SC",serif;font-size:1.8rem;font-weight:400;color:var(--color-text);margin:0;cursor:pointer;transition:color .3s ease;text-align:center;max-width:700px;letter-spacing:.05em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;position:relative;z-index:1}.article-title:hover{color:var(--color-accent)}.slider-control{display:flex;align-items:center;gap:1.5rem;width:100%;max-width:600px;position:relative;z-index:1}.slider-label{font-family:Courier New,monospace;font-size:.875rem;color:var(--color-text-dim);font-weight:600}.slider-input{flex:1;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--color-border);border-radius:2px;outline:none;cursor:pointer}.slider-input::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--color-accent);cursor:grab;-webkit-transition:transform .2s ease;transition:transform .2s ease}.slider-input::-webkit-slider-thumb:hover{transform:scale(1.15)}.slider-input::-webkit-slider-thumb:active{cursor:grabbing}.slider-input::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--color-accent);cursor:grab;border:none;-moz-transition:transform .2s ease;transition:transform .2s ease}.slider-input::-moz-range-thumb:hover{transform:scale(1.15)}.slider-input::-moz-range-thumb:active{cursor:grabbing}.quick-links{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-top:.5rem;position:relative;z-index:1}.quick-link{display:flex;align-items:center;gap:.4rem;color:var(--color-text-muted);text-decoration:none;font-family:Space Mono,monospace;font-size:.7rem;text-transform:uppercase;letter-spacing:.15em;padding:.3rem .5rem;border-radius:4px;transition:all .2s ease}.quick-link:hover{color:var(--color-accent);background:#b48c6414}.quick-link svg{opacity:.7;transition:opacity .2s ease}.quick-link:hover svg{opacity:1}.quick-link-divider{color:var(--color-text-dim);opacity:.3;font-size:.75rem}.tag-cloud-wrapper{margin-top:270px;flex:1;position:relative;overflow-y:auto;overflow-x:hidden}.tag-cloud-wrapper:before{content:"";position:sticky;top:0;left:0;right:0;height:120px;background:linear-gradient(to bottom,var(--color-bg) 0%,rgba(5,5,5,.95) 20%,rgba(5,5,5,.8) 40%,rgba(5,5,5,.5) 60%,rgba(5,5,5,.2) 80%,transparent 100%);pointer-events:none;z-index:10}.tag-cloud{padding:3rem 2rem;display:flex;flex-wrap:wrap;justify-content:center;gap:.75rem;max-width:1200px;margin:0 auto}.tag{background:transparent;border:1px solid var(--color-border);color:var(--color-text-muted);padding:.5rem 1rem;border-radius:20px;font-size:.875rem;font-weight:400;cursor:pointer;transition:all .2s ease}.tag:hover{background:#b48c641a;border-color:var(--color-accent);color:var(--color-text)}.tag--highlighted{background:#c97b8426;border-color:var(--color-rose);color:var(--color-rose)}.tag--hovered{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-bg);transform:translateY(-2px)}.tagline-section{text-align:center;padding:3rem 2rem 4rem;max-width:800px;margin:0 auto}.tagline-decoration{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:1.5rem;color:var(--color-text-dim);opacity:.6}.tagline-decoration--bottom{margin-bottom:0;margin-top:1.5rem;gap:1rem}.deco-star{font-size:.75rem;color:var(--color-accent);animation:twinkle 3s ease-in-out infinite}.deco-star:last-child{animation-delay:1.5s}@keyframes twinkle{0%,to{opacity:.4}50%{opacity:1}}.deco-diamond{font-size:.6rem;color:var(--color-rose)}.deco-line{width:40px;height:1px;background:linear-gradient(90deg,transparent,var(--color-border),transparent)}.deco-dot{font-size:1.25rem;color:var(--color-text-dim);opacity:.5}.tagline-zh{font-family:"Noto Serif SC",serif;font-size:1.1rem;color:var(--color-text-muted);margin:0 0 .75rem;letter-spacing:.1em;line-height:1.8}.tagline-en{font-family:Georgia,serif;font-size:.95rem;color:var(--color-text-dim);margin:0;font-style:italic;letter-spacing:.02em;line-height:1.6}@media(max-width:768px){.background-logo{width:350px;height:350px;opacity:.12}.article-display{padding:2.5rem 1rem}.article-title{font-size:1.4rem;padding:0 1rem;max-width:100%}.slider-control{max-width:100%}.tag-cloud-wrapper{margin-top:250px}.tag-cloud{padding:2rem 1rem}.tag{font-size:.8125rem;padding:.4rem .85rem}.tagline-section{padding:2rem 1.5rem 3rem}.tagline-zh{font-size:1rem}.tagline-en{font-size:.875rem}.deco-line{width:25px}}