@font-face{font-family:Lab;src:local('Aptos'),local('Segoe UI'),local('Arial');font-display:swap}
:root{--navy:#132f5b;--ink:#182c48;--muted:#596b84;--teal:#31579e;--teal-dark:#244781;--line:#dce4ef;--bg:#f5f7fb;--amber:#886524;--red:#b3504d;--steel:#7e92ae;--sidebar:266px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font:15px/1.5 Lab,'Segoe UI',Arial,sans-serif;color:var(--ink)}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}a{color:var(--teal-dark);text-decoration:none}a:hover{text-decoration:underline}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,h3,p{margin:0}h1{font-size:48px;font-weight:550;line-height:1.12;letter-spacing:-1.9px}h2{font-size:24px;line-height:1.3;letter-spacing:-.6px;font-weight:600}h3{font-size:16px;font-weight:650;line-height:1.4}p{line-height:1.65}em{font-style:normal;color:var(--teal-dark)}[hidden]{display:none!important}.symbols{position:absolute;width:0;height:0;overflow:hidden}.skip{position:fixed;z-index:10;left:260px;top:-80px;background:#fff;padding:12px}.skip:focus{top:10px}:focus-visible{outline:3px solid #31579e;outline-offset:4px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.sidebar{width:var(--sidebar);height:100dvh;position:fixed;inset:0 auto 0 0;background:var(--navy);color:#d6e2e5;padding:29px 19px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:11px;color:#fff;font-size:15px;font-weight:650;letter-spacing:2px;padding:4px 8px}.brand:hover{text-decoration:none}.brand-icon{width:36px;height:36px;border:1px solid #50716f;border-radius:8px;display:grid;place-items:center;color:#7bc8b5}.brand-sub{display:block;font-size:8px;letter-spacing:1.8px;font-weight:400;color:#91aaaF;margin-top:4px}.side-label{font-size:9px;letter-spacing:1.7px;color:#86a2ad;padding:0 11px;margin:53px 0 17px}.sidebar nav{display:grid;gap:7px}.sidebar nav a{display:flex;align-items:center;gap:10px;color:#aebfc5;font-size:12px;padding:13px 10px;border-radius:6px;transition:background .15s}.sidebar nav a.active{color:#fff;background:#29424a;box-shadow:inset 3px 0 #4ec3a9}.sidebar nav a:hover{background:#243e47;text-decoration:none}.sidebar nav svg{width:17px;height:17px}.nav-number{margin-left:auto;font-size:10px;color:#77959f}.side-note{margin:47px 12px 20px}.tiny-line{display:block;width:27px;height:2px;background:#54aa97;margin-bottom:17px}.side-note p{font-size:16px;color:#c1d5d7;font-weight:400;line-height:1.6}.side-note small{display:block;font-size:11px;color:#8ba6ae;margin-top:13px;line-height:1.9}.side-bottom{margin-top:auto;padding:20px 12px 0;border-top:1px solid #2d4650;display:grid;gap:17px}.private{display:flex;gap:7px;align-items:center;font-size:11px;color:#bacfd2}.private svg{width:13px;height:13px}.side-bottom small{font-size:10px;line-height:1.8;color:#89a4ad}.side-bottom strong{font-weight:500;color:#bacdd2}
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25px}.hero h1{font-size:46px}.button{border:1px solid transparent;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;gap:14px;padding:11px 17px;font-size:12px;font-weight:600;transition:background .15s;color:var(--ink);line-height:1.5;white-space:nowrap}.button:hover{text-decoration:none}.button svg{width:16px;height:16px}.primary{background:var(--teal-dark);color:#fff}.primary:hover{background:#173664}.outline{border-color:#cbd8d9;background:white}.outline:hover{background:#edf3f1}.subtle{background:#eaf0ee;color:#446069}.subtle:hover{background:#dbe7e2}.text-link{display:block;margin-top:18px;font-size:11px;color:var(--muted)}.text-link span{margin-left:5px;color:var(--teal)}.hero-visual{padding:23px 20px 20px;background:#eaf0ec;border-radius:13px;border:1px solid #d8e3dd;transform:rotate(-.5deg)}.visual-top{display:flex;align-items:center;justify-content:space-between;font-size:9px;letter-spacing:1.2px;color:#657d77;gap:8px}.rail-illustration{width:100%;height:auto;display:block;margin:16px 0}.visual-caption{display:flex;align-items:center;font-size:11px;color:#516c67;gap:8px}.badge{display:inline-flex;align-items:center;font-size:9px;letter-spacing:.1px;font-weight:650;padding:4px 8px;border-radius:4px;line-height:1.5;white-space:nowrap}.fact{color:#126b60;background:#e1f1e9}.informative{color:#68659a;background:#ecebf6}.hypothesis{color:#936c28;background:#f4eddb}.principle-strip{display:flex;align-items:center;gap:15px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12px}.principle-strip p{flex:1;color:#596f78;line-height:1.5}.principle-strip a{font-size:11px;white-space:nowrap}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:37px 0 20px}.section-head 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8px;color:#4d6570;min-height:77px;gap:3px;transition:border-color .2s}.component b{font-size:12px;font-weight:600}.component small{font-size:9px;color:#71888d}.component svg{width:21px;height:21px;margin-bottom:2px}.component.active{border-color:var(--teal);background:#edf6f1;color:var(--teal-dark)}.component:hover{border-color:#539b8c}.transport-node{display:flex;align-items:center}.transport-node .component{padding:16px 4px;background:#eff3f4;min-width:0}.connection-line{height:2px;width:9px;background:#90b8af;flex-shrink:0}.security-band{display:flex;align-items:center;gap:7px;border:1px dashed #cad8d6;border-radius:5px;width:100%;background:#fafcfb;padding:9px 11px;font-size:10px;color:#6d818a;margin-top:16px}.security-band span{margin-left:auto;color:var(--teal-dark);white-space:nowrap}.security-band svg{width:14px;height:14px}.security-band.active{border-color:var(--teal);background:#e9f4ee}.architecture p{margin:12px 0 0}.component-detail{padding:25px 23px;display:flex;flex-direction:column;align-items:flex-start}.component-detail .eyebrow{margin-bottom:12px}.component-detail h3{font-size:18px;margin-bottom:12px}.component-detail p{font-size:12px;color:#637881;margin-bottom:17px}.source-inline{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}.source-link{border:1px solid #dce6e3;background:#f5f8f6;padding:4px 8px;border-radius:4px;font-size:9px;color:#46736a}.dimension-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.dimension-grid article{border-top:2px solid #c9d8d2;padding:17px 5px}.dimension-number{font-family:Georgia,serif;font-size:29px;color:#afc0b9;float:right}.dimension-grid h3{font-size:17px;margin-bottom:10px}.dimension-grid p{font-size:12px;color:#637980;margin-bottom:14px}.dimension-grid a{font-size:10px}.bottom-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#e8f0ed;border-radius:8px;padding:25px 28px;margin-top:20px}.bottom-cta 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var(--line);min-width:0}legend{font-size:10px;font-weight:700;color:#5e777f;letter-spacing:.8px;text-transform:uppercase;float:left;width:100%;margin-bottom:13px}fieldset>label:not(.check){display:block;font-size:11px;color:#607b82;margin-bottom:13px}.check{display:flex;align-items:flex-start;gap:10px;font-size:11px;color:#4f6974;margin-top:14px;cursor:pointer;line-height:1.5}.check input{margin:2px 0 0;accent-color:var(--teal-dark);width:14px;height:14px;flex-shrink:0}.check small{display:block;color:#82938f;font-size:9px;line-height:1.6;margin-top:3px}.range-label{display:flex;justify-content:space-between;gap:5px;font-size:11px;margin-top:18px;align-items:center;color:#58727c}.range-label output{font-size:12px;font-weight:700;color:var(--teal-dark);white-space:nowrap}input[type=range]{appearance:none;background:#e1eae5;height:5px;display:block;width:100%;border-radius:5px;margin:15px 0 5px;cursor:pointer;accent-color:var(--teal)}input[type=range]::-webkit-slider-thumb{appearance:none;width:16px;height:16px;border-radius:50%;background:var(--teal-dark);border:3px solid #fff;box-shadow:0 0 0 1px var(--teal-dark)}input[type=range]::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:var(--teal-dark);border:2px solid #fff}.micro{font-size:9px;color:#82928f;line-height:1.8;margin-top:14px}.gates-details summary{font-size:12px;font-weight:600;cursor:pointer;display:list-item}.gates-details summary span{float:right;font-size:10px;color:var(--teal-dark)}.gates-details .check{margin-top:11px;font-size:10px}.results-column{display:grid;gap:16px;min-width:0}.result-banner{display:flex;gap:16px;align-items:flex-start;border-radius:8px;padding:22px 23px;background:#e9eeee;border:1px solid #d7e1e1}.result-banner>span{font-size:22px;line-height:1;display:grid;place-items:center;background:#fff8;border-radius:50%;width:38px;height:38px;flex-shrink:0}.result-banner 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p{font-size:10px;color:var(--muted);margin-top:8px}.teal-text{color:var(--teal-dark)}.distribution,.steps,.diagnosis,.comparison{padding:22px}.small-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:17px}.small-head h3{font-size:14px}.path-bar{display:flex;min-height:27px;height:27px;border-radius:4px;overflow:hidden;background:#e8efed}.path-segment{min-width:0;transition:width .3s;display:flex;align-items:center;justify-content:center;color:#fff;font-size:9px;font-weight:600;overflow:hidden}.path-segment.teal{background:var(--teal)}.path-segment.steel{background:var(--steel)}.path-segment.red{background:var(--red)}.path-legend{display:flex;gap:22px;font-size:10px;margin:13px 0 18px;color:#637982}.path-legend span{display:flex;align-items:center;gap:6px}.path-legend b{font-weight:650}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;flex-shrink:0}.dot.teal{background:var(--teal)}.dot.steel{background:var(--steel)}.dot.red{background:var(--red)}.cohort{display:flex;align-items:center;font-size:11px;padding:9px 0;border-top:1px solid #edf1ee;color:#647b82;gap:10px}.cohort .cohort-share{font-weight:700;color:var(--ink);min-width:34px}.cohort .cohort-path{margin-left:auto;font-size:9px;font-weight:650;white-space:nowrap}.cohort-path.teal{color:var(--teal-dark)}.cohort-path.red{color:var(--red)}.action-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.action-button{text-align:left;display:flex;align-items:flex-start;gap:9px;border:1px solid #d9e5df;background:#f5f8f6;border-radius:6px;padding:12px 11px;color:var(--ink)}.action-button:hover{border-color:#7bac9f;background:#edf6f0}.action-button.danger-action{border-color:#e7d8d2;background:#fcf7f4}.action-button>span:first-child{font-size:13px;color:var(--teal-dark);font-weight:600}.action-button b{display:block;font-size:11px;font-weight:600}.action-button small{display:block;font-size:9px;color:#7b8c89;margin-top:3px;line-height:1.6}.history-head{display:flex;align-items:center;justify-content:space-between;font-size:9px;color:#7e908d;padding:16px 0 9px;gap:8px}.text-button{font-size:9px;border:0;background:transparent;padding:0;color:var(--teal-dark)}.history{padding:0;margin:0;list-style:none}.history li{display:flex;align-items:center;gap:9px;padding:8px 0;border-top:1px solid #edf1ee;font-size:10px;color:#687e83}.history .history-number{width:19px;height:19px;background:#edf4ef;display:grid;place-items:center;border-radius:50%;color:#599581;font-size:9px}.history small{margin-left:auto;color:#899b94}.concern{border-top:1px solid #edf1ee;padding:12px 0;display:flex;gap:10px}.concern .concern-icon{margin-top:1px;font-size:11px;color:var(--amber);font-weight:700}.concern.danger .concern-icon{color:var(--red)}.concern h4{font-size:11px;margin:0 0 3px;font-weight:600}.concern p{font-size:10px;color:#7b898a;line-height:1.65}.concern a{font-size:9px;display:inline-block;margin-top:4px}.retirement-note{border-radius:5px;background:#f1f5f2;padding:13px;font-size:10px;color:#58756d;line-height:1.75;margin-top:7px}.retirement-note a{font-weight:600}.assumptions{margin-top:24px;padding:19px 22px}.assumptions summary{font-size:12px;font-weight:600;cursor:pointer}.assumption-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px;padding:23px 0 16px}.assumption-grid h3{font-size:12px;margin-bottom:9px}.assumption-grid p{font-size:11px;color:#6e827d;margin-top:8px}.comparison{background:#edf5f0}.comparison h3{font-size:12px;margin-bottom:8px}.comparison p{font-size:11px;color:#617d73}.comparison-close{float:right;font-size:10px;border:0;background:transparent;color:var(--teal-dark)}
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.compatibility-table{border-collapse:collapse;width:100%;min-width:850px;text-align:center;font-size:11px}.compatibility-table caption{text-align:left;padding:16px 18px;color:var(--muted);font-size:11px}.compatibility-table thead th{background:#eef3f0;color:#5c777d;font-size:10px;padding:13px 10px;border-bottom:1px solid var(--line)}.compatibility-table th:first-child{text-align:left;min-width:225px}.compatibility-table tbody th,.compatibility-table td{padding:14px 12px;border-bottom:1px solid #e9edeb}.compatibility-table tbody th{font-weight:600;text-align:left}.compatibility-table th small{display:block;margin-top:4px;color:var(--muted);font-weight:400;font-size:10px}.compatibility-table .compatible{color:var(--teal-dark)}.compatibility-table .incompatible{color:var(--red)}.compatibility-table .selected-board{background:#edf6f1}.compatibility-table .selected-line{box-shadow:inset 0 0 0 1px #8eafa5;background:#f0f5f2;font-weight:700}.compatibility-result{padding:22px}.compatibility-result p{font-size:12px;color:#58727b;line-height:1.7;margin:10px 0}.compatibility-result .source-inline{margin-top:14px}.matrix-example{margin-top:24px}.concern.info .concern-icon{color:var(--teal)}
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