:root{--ink:#14231f;--forest:#16342d;--green:#2f6b50;--lime:#d8ee83;--paper:#f7f3e9;--card:#fffdf8;--line:#d9d3c5;--orange:#e65b36;--muted:#66716c;--shadow:0 18px 48px #18352b18}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;color:var(--ink);background:radial-gradient(circle at 10% 4%,#e7efcf 0,transparent 27%),linear-gradient(180deg,#f8f5ed,#f3eee3);font-family:"Yu Gothic UI","Hiragino Sans","Meiryo",sans-serif;line-height:1.75}a{color:inherit}.support-header{position:sticky;top:0;z-index:30;height:74px;padding:0 clamp(18px,4vw,62px);display:flex;align-items:center;justify-content:space-between;background:#fffdf8e8;border-bottom:1px solid #d8d1c3;backdrop-filter:blur(14px)}.support-brand{display:flex;align-items:center;gap:12px;text-decoration:none}.support-brand img{width:42px;height:42px;border-radius:10px}.support-brand span{display:grid;line-height:1.05}.support-brand b{font-size:18px;letter-spacing:.12em}.support-brand 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