:root{--ink:#26343b;--muted:#617078;--paper:#fffdf9;--bg:#f5f2ec;--line:#e4ded4;--green:#167263;--green-soft:#e6f4ef;--orange:#ed8a4b;--orange-soft:#fff0e4;--blue:#386b9d;--blue-soft:#eaf2fb;--red:#a54c3d;--red-soft:#fff0ed;--shadow:0 12px 32px #1b35220f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;font-size:16px;line-height:1.9}.skip-link{position:absolute;left:-999px}.skip-link:focus{left:16px;top:12px;z-index:10;background:#fff;padding:8px 14px}.site-header{height:68px;background:#fffdfaeF;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1360px)/2));position:sticky;top:0;z-index:3;backdrop-filter:blur(10px)}.brand{font-weight:800;font-size:17px;color:var(--ink);text-decoration:none;letter-spacing:.03em}.brand 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