:root{--ink:#18231f;--paper:#fbfaf5;--lime:#c7f04d;--mint:#eaf5d0;--orange:#ff6b35;--line:#d8ded4;--muted:#6d766e}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans JP",sans-serif}.shell{max-width:1120px;margin:auto;padding:28px 30px 72px}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:21px}.brand{color:var(--ink);font-size:19px;font-weight:800;text-decoration:none;letter-spacing:-.04em}.brand b{color:var(--orange)}.brand-mark{font-family:"DM Mono";font-size:28px;vertical-align:-2px;margin-right:5px;color:#4e7c66}.tagline{font-size:12px;color:var(--muted);margin:0}.intro{max-width:680px;margin:75px 0 42px}.eyebrow{color:#53806a;font:500 11px "DM Mono";letter-spacing:.12em;margin:0 0 12px}.intro h1{font-size:clamp(45px,8vw,82px);line-height:1;margin:0;letter-spacing:-.08em}.intro em{font-style:normal;color:var(--orange);position:relative}.intro 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