:root{--paper:#f4f4f1;--bg:#fff;--ink:#141414;--ink-2:#3c3c38;--muted:#5f5f59;--faint:#8d8d86;--line:#e4e4df;--line-strong:#d2d2cb;--stage:#eeeee9;--ok:#1d6b45;--shadow:0 1px 1px #1414140a, 0 28px 64px #14141414;--nav-h:64px;--sans:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, "Segoe UI", sans-serif;--mono:ui-monospace, "Cascadia Mono", "Yu Gothic", monospace}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px)}body{background:var(--paper);color:var(--ink);font-family:var(--sans);text-rendering:optimizelegibility;word-break:auto-phrase;line-break:strict;margin:0;font-size:16px;line-height:1.7}a{color:inherit}button,input{font:inherit}:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.skip{background:var(--ink);color:#fff;z-index:20;padding:8px 12px;position:absolute;top:-80px;left:12px}.skip:focus{top:8px}.site-header{z-index:30;backdrop-filter:blur(14px);background:#f4f4f1e0;border-bottom:1px solid #0000;position:sticky;top:0}.site-header .container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}.site-header .bar{align-items:center;gap:32px;height:64px;display:flex}.site-header .brand{color:inherit;letter-spacing:-.03em;font-family:system-ui,-apple-system,Segoe UI,Helvetica Neue,Arial,Hiragino Sans,Yu Gothic UI,sans-serif;font-size:18px;font-weight:600;text-decoration:none}.site-header .nav{background:0 0;border:0;align-self:stretch;gap:28px;height:auto;margin-left:auto;display:flex;position:static}.site-header .nav a{color:var(--ink-2);letter-spacing:.02em;align-items:center;font-size:14.5px;font-weight:500;text-decoration:none;display:flex;position:relative}.site-header .nav a:hover{color:var(--ink)}.site-header .header-actions{align-items:center;gap:14px;display:flex}.site-header .lang-link{color:var(--ink-2);border:1px solid var(--line-strong);border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;text-decoration:none}.site-header .lang-link:hover{border-color:var(--ink);color:var(--ink)}.site-header .btn{letter-spacing:.02em;color:#fff;background:#141414;border-radius:8px;min-height:40px;padding:8px 18px;font-size:14px;font-weight:700}.site-header .btn:hover{background:#2c2c2c}.site-header .menu{display:none;position:relative}.site-header .menu summary{cursor:pointer;border:1px solid var(--line-strong);width:40px;height:40px;color:var(--ink);border-radius:8px;place-items:center;list-style:none;display:grid}.site-header .menu summary::-webkit-details-marker{display:none}.site-header .menu-panel{background:var(--bg);border:1px solid var(--line);width:min(300px,100vw - 32px);box-shadow:var(--shadow);border-radius:8px;flex-direction:column;padding:8px;display:flex;position:absolute;top:52px;right:0}.site-header .menu-panel a{color:var(--ink);border-radius:6px;padding:10px 12px;text-decoration:none}.site-header .menu-panel a.menu-cta{background:var(--ink);color:#fff;text-align:center;margin-top:6px;font-weight:500}@media (width<=900px){.site-header .nav,.site-header .header-actions .btn{display:none}.site-header .header-actions{margin-left:auto}.site-header .menu{display:block}}@media (width<=640px){.site-header .container{padding:0 16px}}.btn{cursor:pointer;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;min-height:44px;padding:0 16px;font-size:14px;font-weight:500;text-decoration:none;display:inline-flex}.btn-primary{background:var(--ink);color:#fff}.btn-primary:hover{background:#2c2c2c}.btn-ghost{background:var(--bg);color:var(--ink);border-color:var(--line-strong)}.btn-ghost:hover{border-color:var(--ink)}.cta-row{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.wrap{width:min(1120px,100% - 40px);margin:0 auto}.wrap-wide{width:min(1180px,100% - 40px);margin:0 auto}.hero{text-align:center;padding:72px 0 0}.hero h1{letter-spacing:-.03em;text-wrap:pretty;max-width:14em;margin:0 auto 18px;font-size:clamp(40px,6.2vw,68px);font-weight:500;line-height:1.2}.lead{max-width:38rem;color:var(--muted);text-wrap:pretty;margin:0 auto 28px;font-size:17px;line-height:1.75}.fine{max-width:36rem;color:var(--faint);margin:14px auto 0;font-size:13px;line-height:1.6}.stage{margin-top:48px;padding:0 12px 28px;position:relative}.app{background:var(--bg);min-height:540px;box-shadow:var(--shadow);text-align:left;border:1px solid #e6e6e1;border-radius:16px;grid-template-columns:200px 1fr;display:grid;overflow:hidden}.side{background:#f7f7f4;border-right:1px solid #ecece7;padding:14px 10px;font-size:13px}.side-brand{align-items:center;gap:8px;padding:6px 8px 14px;font-weight:500;display:flex}.mark{background:var(--ink);color:#fff;border-radius:6px;flex:none;place-items:center;width:22px;height:22px;font-size:11px;font-weight:600;display:grid}.side-label{color:var(--faint);margin:8px 8px 4px;font-size:11px}.chan{color:var(--ink-2);border-radius:8px;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px;display:flex}.chan.is-on{color:var(--ink);background:#fff;font-weight:500;box-shadow:0 0 0 1px #e6e6e1}.dot{background:var(--ink);border-radius:50%;flex:none;width:6px;height:6px}.thread{flex-direction:column;min-width:0;display:flex}.thread-bar{border-bottom:1px solid #ecece7;align-items:center;gap:8px;height:52px;padding:0 18px;font-size:14px;font-weight:500;display:flex}.pill{color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 7px;font-size:11px;font-weight:500}.msgs{flex-direction:column;gap:14px;padding:16px 18px 108px;display:flex}.msg{grid-template-columns:28px 1fr;align-items:start;gap:10px;display:grid}.av{background:var(--ink);color:#fff;border-radius:50%;place-items:center;width:28px;height:28px;font-size:12px;font-weight:500;display:grid}.av-you{color:#3a3a36;background:#e6e2d8}.who{font-size:13px;font-weight:500}.when{font-family:var(--mono);color:var(--faint);margin-left:6px;font-size:11px;font-weight:400}.body-t{color:#242420;margin-top:2px;font-size:13.5px;line-height:1.65}.body-t p{margin:0}.points{margin:8px 0 0;padding:0;list-style:none}.points li{padding-left:.9em;position:relative}.points li:before{content:"·";color:var(--faint);position:absolute;left:0}.foot{color:var(--muted);margin-top:8px;font-size:12.5px}.item{background:#fafaf8;border:1px solid #e7e7e2;border-radius:10px;margin-top:8px;padding:10px 12px}.item.is-done .item-text{color:var(--faint);text-decoration:line-through}.item.is-hidden .item-text,.item.is-hidden .src{display:none}.tag{color:var(--ink-2);font-size:12px;font-weight:500}.src{color:var(--faint);font-size:12px;font-family:var(--mono);margin-top:4px}.chips{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.chip{cursor:pointer;min-height:32px;color:var(--ink);background:#fff;border:1px solid #deded8;border-radius:999px;padding:0 10px;font-size:12px}.chip:hover{border-color:#b9b9b2}.chip[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}.status{color:var(--ok);min-height:1.2em;margin:8px 0 0;font-size:12px}.composer{color:var(--faint);border-top:1px solid #ecece7;margin-top:auto;padding:12px 16px;font-size:13px}.evidence{text-align:left;background:#fff;border:1px solid #e6e6e1;border-radius:14px;width:268px;padding:14px 14px 12px;position:absolute;bottom:56px;right:20px;box-shadow:0 16px 40px #1414141a}.evidence h2{color:var(--faint);margin:0 0 8px;font-size:12px;font-weight:500}.evidence blockquote{margin:0;font-size:14px;line-height:1.65}.evidence .src{margin-top:10px}.open{border-bottom:1px solid var(--ink);margin-top:10px;font-size:13px;font-weight:500;text-decoration:none;display:inline-block}.facts{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(4,1fr);width:min(1180px,100% - 40px);margin:8px auto 0;padding:0;list-style:none;display:grid}.facts li{color:var(--muted);padding:20px 18px 22px;font-size:14px;line-height:1.55}.facts li+li{border-left:1px solid var(--line)}.facts strong{color:var(--ink);margin-bottom:2px;font-weight:500;display:block}.block{border-top:1px solid var(--line);grid-template-columns:minmax(280px,420px) minmax(0,1fr);align-items:center;gap:64px;padding:108px 0;display:grid}.kicker{color:var(--faint);margin:0 0 10px;font-size:13px}.block h2,.band h2,.close h2{letter-spacing:-.025em;text-wrap:pretty;margin:0 0 12px;font-size:clamp(28px,3.2vw,40px);font-weight:500;line-height:1.28}.block p,.band p{color:var(--muted);margin:0}.block-copy p+p{margin-top:10px}.panel{background:var(--bg);border:1px solid #e6e6e1;border-radius:16px;overflow:hidden;box-shadow:0 1px 1px #14141408,0 18px 40px #1414140d}.pick{grid-template-columns:1.15fr .85fr;min-height:420px;display:grid}.pick-col{padding:16px}.pick-col+.pick-col{border-left:1px solid var(--line);background:#fafaf8}.pick-k{color:var(--faint);margin:0 8px 10px;font-size:11px}.line{border-radius:10px;padding:10px 10px 12px}.line+.line{margin-top:4px}.line header{color:var(--muted);justify-content:space-between;gap:8px;font-size:12px;display:flex}.line header b{color:var(--ink);font-weight:500}.line p{color:var(--ink);margin:4px 0 0;font-size:13.5px;line-height:1.55}.line em{margin-top:6px;font-size:12px;font-style:normal;font-weight:500;display:inline-block}.line.is-dim{opacity:.42}.brief-mini{padding:8px 8px 4px;font-size:13.5px;line-height:1.65}.brief-mini strong{margin-bottom:8px;font-weight:500;display:block}.ask{padding:18px 18px 16px}.ask .msg{margin-bottom:16px}.sources{gap:8px;margin:10px 0 0 38px;display:grid}.source{border:1px solid var(--line);background:#fafaf8;border-radius:10px;padding:10px 12px}.source b{color:var(--muted);font-size:12px;font-weight:500;display:block}.source p{margin:4px 0 0;font-size:13.5px}.follow{padding:8px 8px 12px}.follow .body-t{font-size:15px}.band{border-top:1px solid var(--line);padding:96px 0}.spec{margin:28px 0 0}.spec div{border-top:1px solid var(--line);grid-template-columns:160px 1fr;gap:24px;padding:16px 0;display:grid}.spec dt{font-weight:500}.spec dd{color:var(--muted);margin:0}.compare{padding-bottom:8px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:14px 16px 14px 0;font-weight:400}thead th{color:var(--faint);font-size:13px;font-weight:500}td:last-child,th:last-child{color:var(--ink);padding-right:0;font-weight:500}.note{color:var(--faint);margin-top:14px;font-size:12.5px;line-height:1.6}.price-row{grid-template-columns:minmax(220px,360px) 1fr;align-items:end;gap:48px;display:grid}.yen{letter-spacing:-.03em;margin:0;font-size:clamp(40px,5vw,56px);font-weight:500;line-height:1}.yen span{letter-spacing:0;color:var(--muted);margin-left:6px;font-size:.42em}.price-list{margin:0;padding:0;list-style:none}.price-list li{border-top:1px solid var(--line);color:var(--ink-2);padding:12px 0}.faq details{border-top:1px solid var(--line)}.faq details:last-of-type{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;padding:18px 28px 18px 0;font-weight:500;list-style:none;position:relative}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--faint);font-weight:400;position:absolute;top:16px;right:0}.faq details[open] summary:after{content:"–"}.faq details p{max-width:46rem;color:var(--muted);margin:0 0 18px}.close{text-align:center;border-top:1px solid var(--line);padding:108px 0 96px}.close .lead{margin-bottom:28px}.wait{text-align:left;width:min(440px,100%);margin:0 auto}.wait label{color:var(--muted);margin:0 0 12px;font-size:13px;display:block}.wait input{border:1px solid var(--line-strong);width:100%;min-height:44px;color:var(--ink);background:#fff;border-radius:10px;margin-top:6px;padding:0 12px;display:block}.wait-row{align-items:end;gap:8px;display:flex}.wait-row label{flex:1;margin:0}.wait-row .btn{flex:none}.wait .btn-block{width:100%;margin-top:4px}.hp{position:absolute;left:-9999px}.consent{color:var(--muted);text-align:left;align-items:flex-start;gap:8px;margin:14px 0 0;font-size:13px;display:flex}.consent input{margin-top:3px}.consent a{color:var(--ink)}.captcha{min-height:0;margin:0}.agree{text-align:left;margin:14px 0 0}.agree a{color:var(--ink)}.form-error{color:#8a2b22;margin:10px 0 0;font-size:13px}.wait-done{margin:0;font-size:18px;font-weight:500}footer{border-top:1px solid var(--line);color:var(--faint);padding:28px 0 40px;font-size:12.5px;line-height:1.65}.foot-grid{justify-content:space-between;gap:32px;display:flex}.foot-grid p{max-width:46rem;margin:0}@media (width<=980px){.app{grid-template-columns:1fr}.side{display:none}.evidence{width:auto;margin:16px 0 0;position:static}.stage{padding-bottom:0}.facts{grid-template-columns:1fr 1fr}.facts li:nth-child(3){border-left:0;border-top:1px solid var(--line)}.facts li:nth-child(odd){border-left:0}.facts li:nth-child(2n){border-left:1px solid var(--line)}.block,.price-row,.pick{grid-template-columns:1fr}.pick-col+.pick-col{border-left:0;border-top:1px solid var(--line)}.spec div{grid-template-columns:1fr;gap:4px}}@media (width<=720px){.hero{padding-top:40px}.facts{grid-template-columns:1fr}.facts li{border-top:1px solid var(--line);border-left:0!important}.facts li:first-child{border-top:0}.block,.band{padding:72px 0}.foot-grid{flex-direction:column}.wait-row{flex-direction:column;align-items:stretch}.wait-row .btn{width:100%}th:nth-child(2),td:nth-child(2){display:none}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}