:root{font-family:Arial,Helvetica,sans-serif;background:#f3f4f5;color:#151719;--paper:#f3f4f5;--ink:#151719;--red:#c93224;--line:#c7cdd3;color-scheme:light;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:var(--red) #e4e7ea}body{margin:0}::selection{background:var(--red);color:var(--paper)}[hidden]{display:none!important}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}button{cursor:pointer;border-radius:0}button:disabled{cursor:not-allowed;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--red);outline-offset:5px}.mono{font-family:"Courier New",monospace;font-size:11px;line-height:1.5;letter-spacing:.04em}.skip-link{position:fixed;left:20px;top:-100px;z-index:10;padding:14px;background:var(--ink);color:var(--paper)}.skip-link:focus{top:12px}.masthead{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 5%;border-bottom:1px solid var(--ink)}.wordmark{font-size:28px;font-weight:700;text-decoration:none;letter-spacing:-1.5px}.wordmark span{font-size:10px;vertical-align:top;margin-left:3px;letter-spacing:0}.opening{padding:66px 5% 76px;max-width:1300px;margin:auto}.eyebrow{display:flex;align-items:center;gap:12px}.signal{width:7px;height:7px;background:var(--red);display:inline-block}h1{font-size:clamp(55px,8.5vw,116px);font-weight:600;line-height:.97;letter-spacing:-.065em;margin:28px 0 36px}em{font-family:Georgia,"Times New Roman",serif;font-weight:400}h1 em{color:var(--red)}.lede{font-size:21px;line-height:1.55;max-width:690px;margin:0}.intro-note{max-width:620px;font-size:13px;line-height:1.7;margin-top:20px;color:#535f6e}.notice,.participation{display:grid;grid-template-columns:250px minmax(0,1fr);gap:50px;border-top:1px solid var(--ink);padding:42px 5% 55px;max-width:1300px;margin:0 auto}.section-number{padding-top:10px;color:#535f6e}h2{font-size:40px;line-height:1.1;font-weight:500;letter-spacing:-1.6px;margin:0 0 26px}p{line-height:1.75;font-size:15px;margin:0 0 18px}.notice p{max-width:760px}.notice details{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin-top:26px}.notice summary{cursor:pointer;font-size:14px;line-height:1.6}.notice details p{font-size:13px;line-height:1.8;margin:20px 0 0}.control-panel{border:1px solid var(--ink);background:#ede4d0;padding:2px;min-width:0}.panel-title{background:var(--ink);color:var(--paper);padding:9px 12px;display:flex;justify-content:space-between;gap:12px;font-size:10px}.panel-body{padding:31px}.consent-label{display:flex;gap:14px;align-items:flex-start;font-size:16px;line-height:1.6;cursor:pointer}.consent-label input{accent-color:var(--red);width:20px;height:20px;flex-shrink:0;margin:3px 0 0}.quiet{font-size:12px;line-height:1.8;color:#535f6e;margin:15px 0 0}.primary-button{display:flex;align-items:center;justify-content:space-between;gap:30px;min-height:48px;background:var(--ink);color:var(--paper);border:1px solid var(--ink);font-size:14px;padding:13px 18px;margin-top:25px;width:max-content;max-width:100%;text-align:left}.primary-button:not(:disabled):hover{background:#37362c}.primary-button span{font-size:18px}.participant-row{display:flex;flex-direction:column;gap:12px}.participant-code{font-family:"Courier New",monospace;font-size:18px;line-height:1.6;overflow-wrap:anywhere;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.measurement-row{display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid var(--line);padding:28px 0 18px;margin-top:10px}.measurement-row p{font-size:13px;margin:0}.measurement-row strong{font-size:34px;line-height:1;vertical-align:baseline;margin-right:5px;font-weight:500}.measurement-row .mono{color:#535f6e;font-size:9px}.result{font-size:13px;border-left:3px solid var(--red);padding:12px 16px;margin:22px 0 0;background:#f3f4f5;overflow-wrap:anywhere}.withdrawal{margin-top:32px;border-top:1px solid var(--line);padding-top:23px}.text-button{color:var(--ink);background:transparent;border:0;border-bottom:1px solid var(--ink);padding:5px 0;line-height:1.6;font-size:12px;text-align:left;min-height:36px}.text-button:not(:disabled):hover{color:#a02c19}#status{margin:25px 0 0;font-family:"Courier New",monospace;font-size:12px;line-height:1.8;min-height:22px}body[data-state=error] #status{color:#952516}.closing{max-width:1300px;margin:0 auto;padding:45px 5% 65px;border-top:1px solid var(--ink)}.closing>p{font-size:clamp(29px,4vw,48px);line-height:1.15;letter-spacing:-1.5px;margin:23px 0 0}.closing em{color:var(--red)}footer{border-top:1px solid var(--ink);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:27px 5%}footer a{font-size:12px}footer .mono{font-size:9px}
@supports selector(::-webkit-scrollbar){html{scrollbar-width:auto;scrollbar-color:auto}::-webkit-scrollbar{width:13px;height:13px}::-webkit-scrollbar-track{background:#e4e7ea;border-left:1px solid #c7cdd3}::-webkit-scrollbar-thumb{background:var(--red);border:3px solid #e4e7ea}::-webkit-scrollbar-thumb:hover{background:var(--ink)}::-webkit-scrollbar-corner{background:#e4e7ea}}
@media(max-width:820px){.notice,.participation{grid-template-columns:1fr;gap:23px;padding-top:30px}.section-number{padding-top:0}.opening{padding-top:45px;padding-bottom:50px}.panel-body{padding:24px}.masthead>.mono{font-size:8px}.lede{font-size:18px}h2{font-size:34px}.notice p{font-size:14px}footer{align-items:flex-start;flex-wrap:wrap}}
@media(max-width:440px){.masthead{padding:16px 6%;gap:12px;min-height:68px}.wordmark{font-size:25px}.masthead>.mono{max-width:115px;text-align:right;line-height:1.7}.opening,.notice,.participation,.closing{padding-left:6%;padding-right:6%}h1{font-size:53px;letter-spacing:-3.4px}.panel-body{padding:20px 17px}.panel-title{font-size:8px;padding:9px}.consent-label{font-size:14px}.primary-button{width:100%;font-size:13px}.measurement-row{flex-wrap:wrap;gap:14px}.participant-code{font-size:16px}.closing>p{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(forced-colors:active){html{scrollbar-color:auto;scrollbar-width:auto}.signal{background:CanvasText}.primary-button{border:1px solid ButtonText}.result{border-color:CanvasText}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline-color:Highlight}::-webkit-scrollbar,::-webkit-scrollbar-track,::-webkit-scrollbar-thumb,::-webkit-scrollbar-corner{all:revert}}

/* Matsurai public identity; consent and collection controls are preserved. */
.wordmark{display:inline-flex;align-items:center;gap:10px;letter-spacing:-1px}.matsurai-mark{width:30px;height:30px;color:var(--red)}.masthead{background:#151719;color:#fff;border-color:#303a44}.masthead .wordmark{color:#fff}.masthead .mono{color:#b5c1ce}.panel{box-shadow:none;border-color:#c7cdd3;border-radius:4px}.panel-title{background:#151719;color:#fff;padding:14px 17px}.primary-button{border-radius:3px;box-shadow:none;background:#c93224;color:#fff;border-color:#c93224}h1 em,h2 em{font-style:normal}.result{background:#e9edf0}.opening{border-color:#c7cdd3}.notice,.participation,.closing,footer{border-color:#c7cdd3}.panel-body{background:#fff}.participant-code{background:#f3f6f8;padding:15px;border-color:#d7dde3}footer{background:#151719;color:#b5c1ce}@media(forced-colors:active){.masthead,footer{background:Canvas;color:CanvasText}.masthead .wordmark,.masthead .mono{color:CanvasText}.primary-button{background:ButtonFace;color:ButtonText;border-color:ButtonText}}