.knowledge-index-head{max-width:760px;padding:32px 0 8px;margin-bottom:28px}.knowledge-index-head h1{color:var(--light-text);font-size:clamp(2.4rem,4vw,3.4rem);line-height:1.4;margin-bottom:12px}.knowledge-index-lead{color:var(--body-text);line-height:1.9}.knowledge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-bottom:40px}.knowledge-card{display:flex;flex-direction:column;gap:10px;padding:24px 22px;background:linear-gradient(140deg,rgba(255,59,141,5%),rgba(255,255,255,0) 60%),var(--surface-panel);border:1px solid var(--line);border-radius:var(--radius-md);transition:transform .2s ease,border-color .2s ease,box-shadow .25s ease}.knowledge-card:hover{transform:translateY(-3px);border-color:var(--primary-line);box-shadow:0 14px 36px -18px rgba(255,59,141,.5)}.knowledge-card-emoji{font-size:3.2rem;line-height:1}.knowledge-card h2{color:var(--light-text);font-size:1.9rem;line-height:1.45}.knowledge-card p{color:var(--body-text);font-size:1.35rem;line-height:1.75;flex:1}.knowledge-card-cta{color:var(--primary-color);font-weight:700}.knowledge-zenn{padding:26px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px}.knowledge-zenn .section-eyebrow{margin:0}.knowledge-zenn-lead{color:var(--body-text);flex:1;min-width:220px}.knowledge-article{max-width:860px;margin:0 auto}.knowledge-article-head{padding:28px 0 20px}.knowledge-article-head .section-eyebrow a{color:inherit}.knowledge-article-head .section-eyebrow a:hover{text-decoration:underline}.knowledge-article-head h1{color:var(--light-text);font-size:clamp(2.4rem,4vw,3.4rem);line-height:1.4;margin-bottom:12px}.knowledge-article-emoji{margin-right:12px}.knowledge-article-lead{color:var(--body-text);line-height:1.9;max-width:720px}.knowledge-article-body{padding:32px 0 8px}.knowledge-article-body h2{color:var(--light-text);font-size:clamp(1.8rem,2.4vw,2.2rem);margin:36px 0 14px;padding-left:14px;border-left:3px solid var(--primary-color)}.knowledge-article-body p{color:var(--body-text);line-height:2;margin-bottom:14px}.knowledge-article-body ul{margin:0 0 14px;padding-left:4px}.knowledge-article-body li{color:var(--body-text);line-height:1.9;padding-left:18px;position:relative;margin-bottom:6px}.knowledge-article-body li::before{content:"▸";color:var(--primary-color);position:absolute;left:0}.knowledge-article-body strong{color:var(--light-text)}.knowledge-article-body a{color:var(--primary-color)}.knowledge-article-body a:hover{text-decoration:underline}.knowledge-article-foot{margin:40px 0 24px;display:flex;flex-direction:column;gap:20px}.knowledge-share{display:flex;justify-content:flex-end}.rtb-demo{padding:20px;margin-top:8px}.rtb-stage-wrap{background:radial-gradient(600px 300px at 50% 0%,rgba(255,59,141,7%),transparent 70%),#0b0d12;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}#rtb-stage{display:block;width:100%;height:auto}.rtb-node{cursor:pointer}.rtb-node:focus-visible{outline:none}.rtb-node:focus-visible rect{stroke:var(--primary-color)!important}.rtb-hud{display:flex;align-items:center;gap:18px;padding:14px 4px 4px}.rtb-clock{flex-shrink:0;display:flex;flex-direction:column;min-width:96px;padding:8px 14px;border:1px solid var(--line);border-radius:var(--radius-sm,10px);background:rgba(255,255,255,2%)}.rtb-clock-label{color:var(--primary-color);font-size:1rem;font-weight:700;letter-spacing:.24em}.rtb-clock-value{color:var(--light-text);font-family:var(--font-mono,ui-monospace,monospace);font-size:2.2rem;font-weight:700;line-height:1.2}.rtb-clock-value small{font-size:1.2rem;color:var(--muted-text);margin-left:2px}.rtb-caption{color:var(--body-text);line-height:1.8;font-size:1.4rem;min-height:2.6em;margin:0}.rtb-controls{display:flex;flex-wrap:wrap;gap:8px;padding:10px 4px 4px}.rtb-btn{font-family:inherit;font-size:1.3rem;font-weight:700;color:var(--light-text);background:rgba(255,255,255,3%);border:1px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;transition:border-color .2s ease,background .2s ease,transform .15s ease}.rtb-btn:hover{border-color:var(--primary-line);transform:translateY(-1px)}.rtb-btn:focus-visible{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(255,59,141,.25)}.rtb-btn--primary{color:#fff;background:linear-gradient(120deg,var(--primary-color),#ff5ea7);border-color:transparent}.rtb-result{margin-top:14px;padding:14px 18px;border:1px solid rgba(255,59,141,.3);border-radius:var(--radius-md);background:rgba(255,59,141,5%)}.rtb-result-title{color:var(--primary-color);font-weight:700;font-size:1.25rem;letter-spacing:.06em;margin:0 0 8px}.rtb-result-list{margin:0 0 8px;padding-left:22px}.rtb-result-list li{color:var(--body-text);font-family:var(--font-mono,ui-monospace,monospace);font-size:1.35rem;line-height:1.9}.rtb-result-list li.is-winner{color:var(--light-text);font-weight:700}.rtb-result-list li.is-winner::after{content:" 🏆"}.rtb-result-note{color:var(--muted-text);font-size:1.25rem;margin:0}.rtb-nodeinfo{margin-top:14px;padding:14px 18px;border:1px solid var(--line);border-left:3px solid var(--primary-color);border-radius:var(--radius-md);background:rgba(255,255,255,2%)}.rtb-nodeinfo-title{color:var(--light-text);font-weight:700;margin:0 0 6px}.rtb-nodeinfo-desc{color:var(--body-text);font-size:1.35rem;line-height:1.85;margin:0}.rtb-hint{color:var(--muted-text);font-size:1.2rem;margin:12px 4px 0}@media(max-width:720px){.rtb-demo{padding:14px}.rtb-hud{flex-direction:column;align-items:flex-start;gap:10px}.rtb-caption{min-height:3.4em}.knowledge-share{justify-content:stretch}.knowledge-share .btn{width:100%}}