:root{color-scheme:light;--bg: #ffffff;--bg-soft: #f8fafc;--panel: #ffffff;--panel-soft: #f8fafc;--ink: #0f172a;--text: #334155;--muted: #64748b;--line: #e2e8f0;--line-soft: #f1f5f9;--brand: #6366f1;--brand-strong: #4f46e5;--brand-soft: #eef2ff;--success: #22c55e;--rose: #e11d48;--footer: #f8fafc}*{box-sizing:border-box}html{background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{margin:0;min-height:100vh;line-height:1.6}a{color:inherit;text-decoration:none}a:focus-visible{border-radius:12px;outline:2px solid var(--brand);outline-offset:4px}.site-header{background:#fffffff2;backdrop-filter:blur(16px);border-bottom:1px solid transparent;position:sticky;top:0;z-index:20}.nav{align-items:center;display:flex;gap:24px;height:64px;justify-content:space-between;margin:0 auto;max-width:1280px;padding:0 24px}.brand{align-items:center;display:inline-flex;gap:14px;min-width:0}.blog-label{border-left:1px solid var(--line);color:var(--muted);font-size:.9rem;font-weight:800;padding-left:14px}.logo{align-items:center;display:inline-flex;gap:12px;line-height:1}.logo-mark{display:block;height:48px;width:auto}.logo-wordmark{font-size:1.45rem;font-weight:900;white-space:nowrap}.logo-level{color:var(--ink)}.logo-kana{color:var(--brand)}.logo-bubble{fill:var(--panel)}.logo-ink{fill:var(--ink)}.logo-invert .logo-level{color:#fff}.logo-invert .logo-ink{fill:#0f172a}.logo-invert .logo-bubble{fill:#fff}.nav-links{align-items:center;display:flex;gap:28px;font-size:.9rem;font-weight:700}.nav-links a:not(.nav-cta){color:#475569}.nav-links a:not(.nav-cta):hover{color:var(--brand-strong)}.nav-cta{background:var(--brand);border-radius:12px;color:#fff;padding:8px 16px}.nav-cta:hover{background:var(--brand-strong)}.hero{background:radial-gradient(circle at 80% 18%,rgb(199 210 254 / 48%),transparent 34%),linear-gradient(135deg,#fff,#f8fafc 55%,#eef2ff);border-bottom:1px solid var(--line-soft);color:var(--ink);display:grid;gap:48px;grid-template-columns:minmax(0,1.05fr) minmax(320px,.85fr);isolation:isolate;overflow:hidden;padding:104px max(24px,calc((100vw - 1280px)/2 + 24px)) 96px;position:relative}.hero>:not(.hero-characters){position:relative;z-index:1}.hero-characters{inset:0;overflow:hidden;pointer-events:none;position:absolute;user-select:none}.hero-characters span{color:#6366f114;font-size:clamp(4rem,8vw,8rem);font-weight:900;position:absolute}.hero-characters span:nth-child(1){left:9%;top:12%;transform:rotate(-10deg)}.hero-characters span:nth-child(2){right:12%;top:20%;transform:rotate(7deg)}.hero-characters span:nth-child(3){bottom:12%;left:22%;transform:rotate(5deg)}.hero-characters span:nth-child(4){bottom:18%;right:18%;transform:rotate(-8deg)}.status-pill{align-items:center;background:var(--brand-soft);border-radius:999px;color:var(--brand-strong);display:inline-flex;font-size:.78rem;font-weight:800;gap:8px;margin:0 0 28px;padding:6px 14px}.status-pill span{background:var(--success);border-radius:999px;display:inline-block;height:8px;width:8px}.eyebrow{color:var(--brand-strong);display:block;font-size:.78rem;font-weight:900;margin-bottom:12px;text-transform:uppercase}h1,h2,h3{line-height:1.1;margin:0}h1{font-size:clamp(3rem,6vw,5.5rem);font-weight:900;max-width:780px}.hero h1 span{background:linear-gradient(90deg,#4f46e5,#0891b2);background-clip:text;color:transparent}h2{color:var(--ink);font-size:clamp(2rem,4vw,2.65rem);font-weight:900}h3{color:var(--ink);font-size:1.18rem;font-weight:800}.lede{color:var(--muted);font-size:1.2rem;line-height:1.7;margin:24px 0 0;max-width:680px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}.primary-action,.secondary-action{align-items:center;border-radius:12px;display:inline-flex;font-size:1rem;font-weight:800;justify-content:center;min-height:52px;padding:0 22px}.primary-action{background:var(--brand);box-shadow:0 18px 40px #6366f147;color:#fff}.primary-action:hover{background:var(--brand-strong)}.secondary-action{background:#fff;border:1px solid var(--line);color:var(--ink)}.secondary-action:hover{border-color:#c7d2fe;color:var(--brand-strong)}.hero-visual{align-self:center;background:#ffffffb8;border:1px solid white;border-radius:16px;box-shadow:0 24px 70px #0f172a1f;padding:22px}.notebook{background:#fff;border-radius:16px;display:grid;gap:18px;padding:26px}.notebook-row{align-items:center;display:grid;gap:14px;grid-template-columns:54px 1fr}.kana-tile{align-items:center;background:var(--brand);border-radius:12px;color:#fff;display:flex;font-size:1.5rem;font-weight:900;height:54px;justify-content:center}.note-line{background:#e2e8f0;border-radius:999px;height:12px}.note-line.short{width:66%}.note-line.green{background:#bbf7d0}.content{background:var(--bg);margin:0 auto;max-width:1280px;padding:88px 24px 104px}.section-heading{display:flex;justify-content:space-between;margin-bottom:32px}.section-heading p{color:var(--muted);font-size:1.08rem;margin:12px 0 0}.post-grid{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr))}.post-card{background:var(--panel);border:1px solid var(--line-soft);border-radius:16px;box-shadow:0 8px 28px #0f172a0f;display:flex;flex-direction:column;min-height:284px;padding:28px}.post-card:hover{border-color:#c7d2fe;box-shadow:0 18px 46px #0f172a1a}.post-card time,.post-meta span,.meta{color:var(--muted);font-size:.82rem;font-weight:800}.post-meta{align-items:center;display:flex;justify-content:space-between;gap:12px}.post-card h3{margin-top:22px}.post-card p{color:var(--muted);margin:14px 0 0}.card-bottom{display:grid;gap:16px;margin-top:auto;padding-top:24px}.tag-row{display:flex;flex-wrap:wrap;gap:8px}.tag{background:var(--brand-soft);border-radius:999px;color:#4338ca;font-size:.78rem;font-weight:800;padding:5px 10px}.read-more{color:var(--brand-strong);font-size:.86rem;font-weight:900}.post-card:hover .read-more{color:#3730a3}.article-shell{margin:0 auto;max-width:840px;padding:72px 24px 104px}.article-shell .lede{color:var(--muted)}.article-shell h1{color:var(--ink);font-size:clamp(2.5rem,5vw,4.5rem);margin-top:18px}.article-shell h2{color:var(--ink);font-size:1.55rem;font-weight:900;margin-top:44px}.article-shell p,.article-shell li{color:var(--text);font-size:1.08rem}.article-content{margin-top:42px}.article-content h2{border-top:1px solid var(--line-soft);padding-top:34px}.article-content h3{font-size:1.18rem;margin-top:30px}.article-content p{margin:18px 0 0}.article-content ul,.article-content ol{color:var(--text);margin:18px 0 0;padding-left:26px}.article-content li+li{margin-top:8px}.article-content strong{color:var(--ink)}.article-content blockquote{background:var(--panel-soft);border-left:4px solid var(--brand);border-radius:0 16px 16px 0;color:var(--text);margin:28px 0;padding:18px 22px}.article-content pre{background:#111827;border:1px solid #1f2937;border-radius:18px;box-shadow:0 18px 42px #0f172a24;color:#e5e7eb;font-size:.98rem;line-height:1.75;margin:24px 0 32px;overflow-x:auto;padding:22px 24px;white-space:pre}.article-content pre code{background:transparent;color:inherit;display:block;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,ui-monospace,monospace;font-size:inherit;padding:0}.article-content :not(pre)>code{background:var(--brand-soft);border-radius:8px;color:#4338ca;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,ui-monospace,monospace;font-size:.92em;padding:.16em .38em}.article-content table{border-collapse:collapse;margin-top:24px;width:100%}.article-content th,.article-content td{border-bottom:1px solid var(--line);color:var(--text);padding:12px;text-align:left;vertical-align:top}.article-content th{color:var(--ink);font-size:.9rem}.article-shell a:not(.back-link){color:var(--brand-strong);font-weight:800;text-decoration:underline;text-underline-offset:.22em}.back-link{color:var(--brand-strong);font-weight:800}.back-link:hover{color:#3730a3}.site-footer{background:var(--footer);border-top:1px solid var(--line-soft);color:var(--muted);padding:64px 24px 32px}.footer-inner{display:grid;gap:40px;grid-template-columns:minmax(0,1fr) auto;margin:0 auto;max-width:1280px}.footer-inner p{max-width:340px}.footer-links{align-items:start;display:grid;gap:10px;grid-template-columns:repeat(2,minmax(110px,1fr))}.footer-links a:hover{color:var(--brand-strong)}.footer-bottom{border-top:1px solid var(--line);font-size:.9rem;margin:48px auto 0;max-width:1280px;padding-top:28px;text-align:center}@media(max-width:920px){.hero{grid-template-columns:1fr;padding-bottom:72px;padding-top:72px}.post-grid,.footer-inner{grid-template-columns:1fr}}@media(max-width:680px){.nav{align-items:center;height:64px}.nav-links{margin-left:auto}.nav-links a:not(.nav-cta){display:none}.blog-label{display:none}.hero,.content,.article-shell{padding-left:18px;padding-right:18px}.hero-visual{padding:14px}.article-content pre{border-radius:14px;margin:20px -2px 28px;padding:18px 16px}.notebook{padding:18px}}@media(max-width:520px){.logo-mark{height:42px}.logo-wordmark{font-size:1.22rem}.nav-links{font-size:.84rem}.nav-links a:nth-child(3){display:none}.hero-actions{flex-direction:column}.primary-action,.secondary-action{width:100%}}