*,*::before,*::after{box-sizing:border-box}html{font-size:100%;-webkit-text-size-adjust:100%}body{margin:0;font-family:system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;line-height:1.7;color:#1a1a1a;background:linear-gradient(180deg, #fff 0%, #fcfcfb 55%, #fbfbfa 100%)}a{color:#2563eb;text-decoration-thickness:1px;text-underline-offset:0.2em;transition:color 0.18s ease}a:hover{text-decoration-thickness:2px}.site-header{border-bottom:1px solid rgba(26,26,26,0.08);background:#f8fafc;backdrop-filter:blur(4px);box-shadow:0 2px 8px rgba(26,26,26,0.03);position:relative}.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg, rgba(37,99,235,0) 0%, rgba(37,99,235,0.2) 50%, rgba(37,99,235,0) 100%)}.site-header__inner{max-width:42rem;margin:0 auto;padding:1.25rem 1.5rem;display:flex;flex-direction:column;align-items:flex-start;gap:0.6rem}.site-branding{display:flex;flex-direction:column;gap:0.15rem}.site-title{margin:0;font-size:1.2rem;font-weight:700;letter-spacing:0.02em;line-height:1.3;position:relative;padding-left:0.7rem}.site-title::before{content:"";position:absolute;left:0;top:0.18em;width:3px;height:1.1em;border-radius:999px;background:linear-gradient(180deg, #2563eb 0%, #4f89f0 100%)}.site-description{margin:0;color:#5c5c5c;font-size:0.9rem;line-height:1.5}.site-nav{font-size:0.9375rem}.site-nav__list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0.45rem}.site-nav__list li{margin:0}.site-nav a{color:#1a1a1a;text-decoration:none;display:inline-block;padding:0.3rem 0.7rem;border-radius:999px;border:1px solid transparent;background:transparent;transition:background 0.18s ease, border-color 0.18s ease, color 0.18s ease}.site-nav a:hover{color:#2563eb;background:#dbe8ff;border-color:rgba(37,99,235,0.22)}.site-main{max-width:42rem;margin:0 auto;padding:2.35rem 1.5rem 3rem}.site-footer{margin-top:2rem;border-top:1px solid rgba(26,26,26,0.08);background:rgba(255,255,255,0.96);color:#5c5c5c;font-size:0.875rem}.site-footer__inner{max-width:42rem;margin:0 auto;padding:1.4rem 1.5rem 1.25rem;display:flex;flex-direction:column;gap:0.5rem}.footer-links__list{list-style:none;margin:0;padding:0;display:flex;gap:0.9rem;flex-wrap:wrap}.footer-links__list li{margin:0}.footer-email{display:inline-flex;align-items:baseline;flex-wrap:wrap;gap:0.35rem}.footer-email__copy{background:none;border:none;padding:0;margin:0;font:inherit;color:#2563eb;cursor:pointer;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:0.2em}.footer-email__copy:hover{text-decoration-thickness:2px}.footer-email__copy:focus-visible{outline:2px solid #2563eb;outline-offset:2px}.footer-email__feedback{font-size:0.8125rem;color:#5c5c5c}.site-footer__copyright{display:block}.site-main h1{font-size:1.75rem;font-weight:700;line-height:1.35;margin:0 0 1rem;letter-spacing:0.02em}.site-main h2{font-size:1.25rem;font-weight:700;margin:2rem 0 0.75rem;padding:0 0 0.35rem 0.55rem;border-bottom:1px solid #e8e6e3;border-left:3px solid rgba(37,99,235,0.45)}.site-main h3{font-size:1.1rem;font-weight:600;margin:1.5rem 0 0.5rem}.site-main p{margin:0 0 1rem}.site-main ul,.site-main ol{margin:0 0 1rem;padding-left:1.35rem}.site-main li{margin:0.25rem 0}.site-main pre,.site-main code{font-family:ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;font-size:0.9em}.site-main code{background:#f0eeeb;padding:0.15em 0.4em;border-radius:4px}.site-main pre{background:#f0eeeb;padding:1rem;border-radius:6px;overflow-x:auto;border:1px solid #e8e6e3}.site-main pre code{background:none;padding:0}.post-list{list-style:none;padding:0;margin:0.75rem 0 0;display:grid;gap:0.9rem}.post-list li{margin:0;padding:1.5rem 1.5rem 1.35rem;background:#fff;border:1px solid #e8e6e3;border-radius:12px;box-shadow:0 2px 10px rgba(26,26,26,0.05);border-left:4px solid transparent;transition:transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease}.post-list li:hover{transform:translateY(-2px);border-color:rgba(37,99,235,0.3);border-left-color:#2563eb;box-shadow:0 10px 22px rgba(26,26,26,0.11)}.post-list__title{font-weight:600;text-decoration:none}.post-list__title:hover{text-decoration:underline}.site-main .post-list__heading{margin:0;font-size:1.05rem}.post-list__preview{margin:0.45rem 0 0;font-size:0.9rem;color:#5c5c5c;line-height:1.75}.post-list__meta{display:block;font-size:0.76rem;color:rgba(92,92,92,0.78);margin-top:0.55rem}.post-header{margin-bottom:1.5rem}.post-title{font-size:1.75rem;font-weight:700;line-height:1.35;margin:0 0 0.35rem;letter-spacing:0.02em}.post-meta{margin:0;font-size:0.875rem;color:#5c5c5c}.post-taxonomy-list,.post-list__taxonomy{list-style:none;margin:0.55rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:0.45rem}.post-taxonomy-list li,.post-list__taxonomy li{margin:0}.taxonomy-pill{display:inline-block;border-radius:999px;border:1px solid transparent;padding:0.16rem 0.6rem;font-size:0.76rem;line-height:1.5;color:#1a1a1a}.taxonomy-pill--category{background:#eef4ff;border-color:rgba(37,99,235,0.22)}.taxonomy-pill--tag{background:#f3f4f6;border-color:rgba(26,26,26,0.1);color:#3f3f46}.post-body h2{font-size:1.25rem;font-weight:700;margin:2rem 0 0.75rem;padding-bottom:0.35rem;border-bottom:1px solid #e8e6e3}.post-body strong{font-weight:700;color:#111}.post-body blockquote{margin:0 0 1rem;padding:0.65rem 1rem 0.65rem 1.1rem;border-left:4px solid rgba(37,99,235,0.45);background:rgba(37,99,235,0.06);color:#242424}.post-body blockquote p{margin:0 0 0.5rem}.post-body blockquote p:last-child{margin-bottom:0}.related-posts{margin-top:2rem;padding:1.1rem 1rem 0.9rem;border:1px solid #e8e6e3;border-radius:12px;background:#fff}.related-posts h2{margin:0 0 0.6rem;font-size:1.1rem}.related-posts__list{margin:0;padding-left:1.25rem}.site-main .related-posts__heading{margin:0;font-size:1rem}.related-posts__empty{margin:0;color:#5c5c5c}.archive-group-list{list-style:none;margin:0.9rem 0 0;padding:0;display:grid;gap:0.95rem}.archive-group-list__item{margin:0;padding:1rem 1rem 0.9rem;border:1px solid #e8e6e3;border-radius:12px;background:#fff}.site-main .archive-group-list__heading{margin:0 0 0.55rem;display:flex;align-items:center;gap:0.45rem;font-size:1rem}.archive-group-list__count{font-size:0.8rem;color:#5c5c5c}.archive-post-list{margin:0;padding-left:1.15rem}.archive-post-list li{margin:0.3rem 0}.archive-post-list__meta{margin-left:0.5rem;font-size:0.78rem;color:#5c5c5c}@media (min-width: 48rem){.site-header__inner{padding-top:1.4rem;padding-bottom:1.2rem}.site-main h1{font-size:2rem}.post-title{font-size:2rem}}