:root{color-scheme:dark;--bg:#06101d;--panel:#0c2136;--line:rgba(139,203,255,.18);--text:#eff8ff;--muted:#92a9bc;--cyan:#37e6ff;--violet:#a884ff;font-family:Inter,"Noto Sans JP","Yu Gothic",system-ui,sans-serif}*{box-sizing:border-box}html{min-width:320px;background:var(--bg)}body{margin:0;color:var(--text);background:radial-gradient(circle at 85% 10%,rgba(35,113,190,.2),transparent 30%),radial-gradient(circle at 10% 90%,rgba(126,71,206,.13),transparent 35%),var(--bg);line-height:1.8}.idea-header{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px clamp(18px,4vw,60px);border-bottom:1px solid var(--line);background:rgba(5,15,27,.84);backdrop-filter:blur(18px);position:sticky;top:0;z-index:10}.idea-header>a:first-child{display:flex;align-items:baseline;gap:14px;color:inherit;text-decoration:none}.idea-header b{font-size:20px}.idea-header span{color:#7ecfe3;font-size:12px}.header-cta{padding:7px 13px;color:#dffaff;text-decoration:none;border:1px solid rgba(55,230,255,.35);border-radius:10px}.idea-shell,.detail-shell{width:min(1160px,calc(100% - 36px));margin:0 auto;padding:clamp(54px,8vw,96px) 0}.detail-shell{width:min(920px,calc(100% - 36px))}.kicker{margin:0 0 8px;color:var(--cyan);font:700 11px ui-monospace,monospace;letter-spacing:.2em}h1{margin:0;font-size:clamp(34px,6vw,70px);line-height:1.25;letter-spacing:-.04em}h1 em{color:var(--cyan);font-style:normal}.lead{max-width:850px;margin:22px 0 36px;color:var(--muted);font-size:clamp(15px,2vw,18px)}.idea-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.idea-card{display:block;min-height:270px;padding:28px;color:inherit;text-decoration:none;border:1px solid var(--line);border-radius:20px;background:linear-gradient(145deg,rgba(15,42,66,.9),rgba(8,23,39,.8));transition:.2s}.idea-card:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 24px 60px #0005}.idea-card.future{border-color:rgba(168,132,255,.25)}.idea-card small{color:#718ea4;font:700 10px ui-monospace,monospace;letter-spacing:.12em}.idea-card h2{margin:10px 0 7px;font-size:25px}.idea-card p{margin:0;color:var(--muted)}.idea-card strong{display:block;margin-top:22px;color:var(--cyan);font-size:13px}.meta-row{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 26px}.meta-row span{padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:#9fc2d8;font-size:11px}.detail-card{padding:clamp(24px,5vw,48px);border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,rgba(15,42,66,.9),rgba(8,23,39,.82));box-shadow:0 30px 80px #0004}.detail-card h2{margin:0 0 20px;font-size:24px}.detail-card ul{margin:0;padding:0;list-style:none}.detail-card li{position:relative;padding:18px 0 18px 30px;color:#c4d4df;border-top:1px solid var(--line)}.detail-card li:first-child{border-top:0}.detail-card li::before{content:"";position:absolute;left:3px;top:29px;width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}.pager{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;margin-top:28px}.pager a{padding:12px;color:#bceefa;text-align:center;text-decoration:none;border:1px solid var(--line);border-radius:12px}.pager a:last-child{text-align:right}.pager a:first-child{text-align:left}footer{padding:30px;text-align:center;color:#627d91;border-top:1px solid var(--line);font-size:12px}@media(max-width:720px){.idea-header span{display:none}.idea-grid{grid-template-columns:1fr}.idea-card{min-height:0}.pager{grid-template-columns:1fr}.pager a,.pager a:first-child,.pager a:last-child{text-align:center}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}