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.brief{position:relative;display:grid;gap:9px;margin:20px 0 0;border-top:1.5px solid rgba(245,197,24,.35);padding-top:18px}.oai .brief .row{display:grid;grid-template-columns:74px 1fr;gap:12px;align-items:start;font-size:.93rem;line-height:1.75}.oai .brief .k{font-weight:900;font-size:.78rem;color:var(--blue-dark);background:var(--yellow);border-radius:7px;padding:3px 0;text-align:center;letter-spacing:.05em}.oai .brief .v b{color:var(--yellow)}.oai .pro-turn{position:relative;margin:16px 0 14px;padding-top:14px;border-top:1.5px dashed rgba(245,197,24,.5);font-size:.98rem;line-height:1.8}.oai .pro-turn b{color:var(--yellow)}.oai .pro-hook{position:relative;margin:0;font-family:Yusei Magic,sans-serif;font-size:1.02rem;line-height:2}.oai .pro-hook .fin{display:block;margin-top:10px;font-family:Noto Sans JP,sans-serif;font-weight:900;font-size:clamp(1.12rem,4.6vw,1.42rem);line-height:1.5;color:var(--yellow)}@media(max-width:560px){.oai .brief .row{grid-template-columns:64px 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.scene{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:center}.oai .scene.rev{grid-template-columns:1fr 120px}.oai .scene.rev .art{order:2}.oai .art svg{width:100%;height:auto;display:block;filter:drop-shadow(0 3px 0 var(--shadow))}.oai .cap{font-size:1rem;line-height:1.8}.oai .cap b{color:var(--blue-deep);font-weight:700}.oai .cap .hot{color:var(--red);font-weight:700}.oai .cap .u{background:linear-gradient(transparent 62%,var(--yellow) 62%);font-weight:700;padding:0 2px}.oai .bubble{position:relative;background:var(--panel-2);border:2.5px solid var(--line);border-radius:18px;padding:11px 15px;font-family:Yusei Magic,sans-serif;font-size:1rem;line-height:1.6;margin:8px 0}.oai .bubble:after{content:"";position:absolute;left:24px;bottom:-11px;width:14px;height:14px;background:var(--panel-2);border-right:2.5px solid var(--line);border-bottom:2.5px solid var(--line);transform:rotate(45deg)}.oai .bubble .who{display:block;font-size:.68rem;letter-spacing:.08em;color:var(--ink-soft);margin-bottom:2px;font-family:Noto Sans JP,sans-serif}.oai .bubble.shout{background:var(--yellow-pale);border-color:var(--yellow);color:var(--yellow-ink);font-weight:700}.oai .bubble.shout:after{background:var(--yellow-pale);border-color:var(--yellow)}.oai .sfx{font-weight:900;color:var(--blue);font-size:clamp(1.4rem,6vw,2.1rem);line-height:1;letter-spacing:.02em;transform:rotate(-3deg);display:inline-block;margin:0 0 6px;text-shadow:2px 2px 0 var(--yellow)}.oai .sfx.r{color:var(--red);text-shadow:2px 2px 0 var(--yellow)}.oai .memo{background:var(--panel-2);border:2.5px solid var(--blue);border-radius:16px;padding:15px 17px;margin:15px 0 2px;position:relative}.oai .memo .lbl{display:inline-flex;align-items:center;gap:6px;font-weight:900;font-size:.83rem;color:#fff;background:var(--blue);padding:4px 13px;border-radius:999px;margin-bottom:9px}.oai .memo p{margin:0;font-size:.93rem;line-height:1.85}.oai .memo p+p{margin-top:8px}.oai .memo b{color:var(--blue-deep);font-weight:700}.oai .memo .q{display:block;font-family:Yusei Magic,sans-serif;background:var(--panel);border-left:5px solid var(--blue);padding:8px 12px;margin:9px 0 0;border-radius:0 10px 10px 0;font-size:.9rem;color:var(--ink-soft)}.oai .memo.warn{border-color:var(--red)}.oai .memo.warn .lbl{background:var(--red)}.oai .memo.warn b{color:var(--red)}.oai .memo.warn .q{border-left-color:var(--red)}.oai .memo.gold{border-color:var(--yellow)}.oai .memo.gold .lbl{background:var(--yellow);color:var(--blue-dark)}.oai .memo.gold b{color:var(--yellow-ink)}.oai .more{margin-top:11px;border-top:1.5px dashed var(--blue);padding-top:9px}.oai .memo.warn .more{border-top-color:var(--red)}.oai .memo.gold .more{border-top-color:var(--yellow)}.oai .more summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.85rem;color:var(--blue-deep);padding:4px 2px;border-radius:8px}.oai .memo.warn .more summary{color:var(--red)}.oai .memo.gold .more summary{color:var(--yellow-ink)}.oai .more summary::-webkit-details-marker{display:none}.oai .more summary .tri{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--blue);color:#fff;font-size:.72rem;line-height:1;transition:transform .25s ease;flex:0 0 20px}.oai .memo.warn .more summary .tri{background:var(--red)}.oai .memo.gold .more summary .tri{background:var(--yellow);color:var(--blue-dark)}.oai .more[open] summary .tri{transform:rotate(90deg)}.oai .more summary:hover{background:var(--panel-3)}.oai .more summary:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}.oai .more .body{margin-top:9px;font-size:.89rem;line-height:1.9;color:var(--ink-soft);animation:slideDown .28s ease}.oai .more .body p{margin:0;font-size:.89rem;color:var(--ink-soft)}.oai .more .body p+p{margin-top:7px}.oai .more .body b{color:var(--blue-deep)}.oai .memo.warn .more .body b{color:var(--red)}.oai .more 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.lesson p{margin:0;font-size:.9rem;line-height:1.75;color:var(--ink-soft)}.oai .lesson p b{color:var(--blue-deep)}.oai .risk{display:flex;gap:9px;align-items:baseline;font-size:.92rem;padding:8px 0;border-bottom:1.5px dotted var(--outline,#c0c9d8)}.oai .risk:last-child{border-bottom:0}.oai .risk .x{color:var(--red);font-weight:900}.oai .video{margin-top:52px}.oai .vtitle{font-weight:900;font-size:clamp(1.15rem,4.6vw,1.5rem);color:var(--blue-dark);margin-bottom:12px}.oai .vframe{position:relative;padding-top:56.25%;border:3px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 6px 0 var(--shadow);background:var(--panel-2)}.oai .vframe iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}.oai .vnote{margin:10px 0 0;font-size:.8rem;color:var(--ink-soft);line-height:1.8}.oai footer{margin-top:52px;padding:22px 0 0;border-top:4px solid var(--blue)}.oai footer .src{font-size:.8rem;color:var(--ink-soft);line-height:1.9}.oai footer .src b{color:var(--ink)}.oai footer .note{font-size:.76rem;color:var(--ink-soft);margin-top:12px;line-height:1.75}.oai footer a{color:var(--blue);font-weight:700}.oai a{color:var(--blue-deep)}.oai .reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}.oai .reveal.in{opacity:1;transform:none}@media(prefers-reduced-motion:reduce){.oai .reveal{opacity:1;transform:none;transition:none}}@media(max-width:560px){.oai .scene,.oai .scene.rev{grid-template-columns:1fr;gap:10px}.oai .scene .art{max-width:130px;margin:0 auto}.oai .scene.rev .art{order:0}}.oai.pol{--band:linear-gradient(160deg,#0083de 0%,#2a9ff0 45%,#4aa8ee 100%);--band-ink:#fff;--line:#0083de;--blue-dark:#00528f;--shadow:rgba(0,131,222,.2);--tone:rgba(74,168,238,.16)}.oai.pol .hero:before{background:radial-gradient(circle at 82% 22%,rgba(255,255,255,.25),transparent 55%)}