:root{--ink:#061118;--ink2:#0a1b25;--ink3:#102936;--white:#f8fbfc;--mist:#e9f0f2;--muted:#91a4ae;--line:rgba(255,255,255,.13);--gold:#c8aa69;--gold2:#e4cc94;--sky:#9dc3d3;--paper:#f3f5f3;--paperink:#14252d;--max:1360px;--serif:"Iowan Old Style","Baskerville","Times New Roman",serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ink);color:var(--white);font:15px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.wrap{width:min(var(--max),calc(100% - 48px));margin:auto}.nav{position:fixed;inset:0 0 auto;z-index:80;background:linear-gradient(#061118e8,#061118b0,transparent);transition:.25s}.nav.scrolled{background:#061118f2;border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}.navin{height:84px;display:flex;align-items:center;gap:30px}.brand{margin-right:auto;font:600 18px var(--serif);letter-spacing:.22em}.brand 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/* R4 decision intelligence */
.decision-hero{min-height:720px;display:grid;align-items:center;background:radial-gradient(circle at 72% 35%,#163c4d 0,#07151d 35%,#061118 68%);position:relative;overflow:hidden}.decision-hero:after{content:"";position:absolute;width:52vw;height:52vw;border:1px solid #c7a9652b;border-radius:50%;right:-8vw;top:12%;box-shadow:0 0 0 70px #c7a96508,0 0 0 140px #c7a96505}.decision-hero .copy{position:relative;z-index:2;max-width:850px;padding-top:90px}.decision-hero h1{font:400 clamp(58px,8vw,112px)/.9 var(--serif);letter-spacing:-.055em;margin:12px 0 26px}.decision-hero p{max-width:720px;font-size:18px;color:#afbdc5}.decision-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:42px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}.decision-bar div{background:#071720;padding:20px}.decision-bar b{display:block;font:400 24px var(--serif)}.decision-bar small{color:var(--muted)}
.tool-shell{display:grid;grid-template-columns:370px 1fr;gap:18px;align-items:start}.tool-card,.result-card,.model-card,.cost-card{background:#091a24;border:1px solid var(--line);border-radius:18px}.tool-card{padding:22px;position:sticky;top:92px}.tool-card h2{font:400 30px var(--serif);margin:0 0 6px}.tool-card label{display:block;font-size:11px;color:#9eb0ba;letter-spacing:.08em;text-transform:uppercase;margin:14px 0 6px}.tool-card input,.tool-card select{width:100%;background:#061118;border:1px solid var(--line);border-radius:9px;color:#fff;padding:12px}.two{display:grid;grid-template-columns:1fr 1fr;gap:8px}.tool-note{font-size:11px;color:#81949e;line-height:1.55}.results-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:12px}.results-head h2{font:400 34px var(--serif);margin:0}.result-card{padding:22px;margin-bottom:10px;display:grid;grid-template-columns:1.5fr .6fr .7fr;gap:16px;align-items:center}.result-card.fail{opacity:.7}.result-card h3{font:400 25px var(--serif);margin:4px 0}.score-ring{width:78px;height:78px;border-radius:50%;display:grid;place-items:center;border:6px solid #c7a965;font:400 22px var(--serif)}.score-ring.fail{border-color:#744f4f}.badge-fail{display:inline-block;border:1px solid #8f5b5b;color:#dca0a0;border-radius:999px;padding:5px 8px;font-size:10px;letter-spacing:.08em}.badge-pass{display:inline-block;border:1px solid #537765;color:#a9d7bd;border-radius:999px;padding:5px 8px;font-size:10px;letter-spacing:.08em}.reason{font-size:11px;color:#9eb0ba}.cost-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.cost-card{padding:22px}.cost-card b{font:400 32px var(--serif);display:block}.cost-card small{color:var(--muted)}.breakdown{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.breakdown div{border-bottom:1px solid var(--line);padding:10px 0;display:flex;justify-content:space-between;gap:14px}.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.model-card{padding:22px}.model-card h3{font:400 27px var(--serif);margin:5px 0 14px}.metric-row{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.metric{padding:10px;border:1px solid var(--line);border-radius:9px}.metric b{display:block;font-size:16px}.metric small{color:var(--muted)}.route-line{height:1px;background:linear-gradient(90deg,#c7a965,#c7a96515);position:relative;margin:30px 0}.route-line:before,.route-line:after{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:#c7a965;top:-4px}.route-line:before{left:0}.route-line:after{right:0}.fo-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:14px}.stack{display:grid;gap:12px}.mini-panel{padding:18px;border:1px solid var(--line);border-radius:14px;background:#091a24}.progress{height:7px;background:#071118;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;background:#c7a965}.callout{border-left:3px solid #c7a965;padding:18px 20px;background:#c7a9650b}.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:18px 0}.tab{border:1px solid var(--line);border-radius:999px;padding:8px 12px;font-size:11px;cursor:pointer}.tab.on{background:#c7a965;color:#061118;border-color:#c7a965}@media(max-width:950px){.tool-shell,.fo-grid{grid-template-columns:1fr}.tool-card{position:static}.model-grid{grid-template-columns:repeat(2,1fr)}.decision-bar{grid-template-columns:1fr 1fr}.result-card{grid-template-columns:1fr .4fr}}@media(max-width:650px){.two,.cost-grid,.model-grid,.metric-row,.breakdown{grid-template-columns:1fr}.decision-bar{grid-template-columns:1fr}.result-card{grid-template-columns:1fr}.score-ring{width:62px;height:62px}.decision-hero h1{font-size:58px}}