:root{--theme:#1f6f8b;--bg:#f6f7f9;--surface:#ffffff;--text:#1c2430;--muted:#5d6b7a;--border:#dde3ea;--ng:#b3261e;--warn-bg:#fff6dc;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,Yu Gothic UI,Meiryo,sans-serif;line-height:1.7}a{color:var(--theme)}h1{font-size:1.6rem;line-height:1.4}.wrap{max-width:1120px;margin:0 auto;padding:0 16px}.main{padding-top:24px;padding-bottom:48px;min-height:60vh}.site-header{background:var(--theme);color:#fff}.header-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;min-height:60px}.logo{color:#fff;text-decoration:none;font-weight:700;font-size:1.1rem}.logo small{font-weight:400;opacity:.85;font-size:.8rem}.nav{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.nav a{color:#fff;text-decoration:none;font-size:.95rem}.cart-link{background:#ffffff22;padding:4px 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li:before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--theme);color:#fff;display:grid;place-items:center;font-size:.8rem;margin-top:2px}.blocks .callout{background:#fff6dc;border-left:5px solid #e0a100;border-radius:8px;padding:12px 16px;margin:12px 0;font-weight:700}.pict{display:inline-block;vertical-align:-.2em;flex-shrink:0}.nav a{display:inline-flex;align-items:center;gap:5px}.nav a .pict{opacity:.9}.top-tab-bar button{display:inline-flex;align-items:center;gap:6px}.use-pict{display:block;color:var(--theme);margin-bottom:6px}.flow .steps .step-pict{display:block;color:var(--theme);margin:2px 0 6px 36px}.tile-shop .tile-icon{color:#b86a00}.project-page{margin:12px 0 20px}