:root{--navy:#102e47;--blue:#2563eb;--cyan:#18a8b5;--orange:#e86516;--ink:#172231;--muted:#566779;--line:#d7e1e9;--soft:#eef5fa;--ok:#147d61;--warn:#9a600a;--bad:#a63d3d;--shadow:0 16px 45px rgba(16,46,71,.09)}*{box-sizing:border-box}html{font-size:16px}body{margin:0;background:#edf3f7;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.65;word-break:auto-phrase}.topbar{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,4vw);background:var(--navy);color:#fff}.brand{font-weight:900;letter-spacing:.08em}.mode{margin-left:10px;padding:4px 8px;border:1px solid #53758c;border-radius:99px;color:#abd1df;font:700 10px/1 monospace}main{max-width:1500px;margin:auto;padding:30px max(20px,3.5vw) 60px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.setup{max-width:820px;margin:3vh auto;padding:34px}.eyebrow{margin:0;color:#14728e;font-size:11px;font-weight:900;letter-spacing:.14em}h1{margin:5px 0 10px;font-size:clamp(28px,4vw,44px);line-height:1.2;letter-spacing:-.035em}h2{margin:3px 0;font-size:22px}h3{margin:26px 0 10px;font-size:14px}p{color:var(--muted)}label,legend{display:block;margin:20px 0 7px;font-size:13px;font-weight:800}textarea,input{width:100%;border:1px solid #b9c9d5;border-radius:10px;background:#fff;color:var(--ink);font:inherit;padding:12px 14px;resize:vertical}textarea:focus,input:focus,button:focus-visible,summary:focus-visible{outline:3px solid rgba(37,99,235,.28);outline-offset:2px;border-color:var(--blue)}fieldset{margin:18px 0 22px;padding:0;border:0}.requirements{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.requirement-input{display:flex;gap:8px}.requirement-input input{padding:9px 11px}.primary,.secondary{min-height:44px;padding:10px 17px;border-radius:9px;border:1px solid transparent;font:700 14px/1 inherit;cursor:pointer;transition:background .2s,border-color .2s,color .2s}.primary{background:var(--blue);color:#fff}.primary:hover{background:#174cc4}.secondary{background:transparent;color:inherit;border-color:#668398}.secondary:hover{background:rgba(255,255,255,.1)}button:disabled{opacity:.55;cursor:not-allowed}.workspace{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(360px,.65fr);gap:18px;align-items:start}.chat,.inspector{overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:19px 22px;border-bottom:1px solid var(--line)}.status,.progress-text{padding:5px 9px;border-radius:999px;background:#fff1dc;color:var(--warn);font-size:11px;font-weight:900}.status.done{background:#e6f6f0;color:var(--ok)}.messages{height:calc(100vh - 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