.site-logo__mark{width:34px!important;height:34px!important;border-radius:10px!important;background:radial-gradient(circle at 50% 50%,#fff,#ecfeff 42%,#0f172a)!important;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 0 0 1px #22d3ee33,0 5px 16px #0ea5e929;flex-shrink:0;color:#6366f1}.site-logo__img{width:100%;height:100%;object-fit:cover;display:block}.site-logo__img[data-failed="1"],.site-logo__fallback{display:none}.site-logo__img[data-failed="1"]+.site-logo__fallback{display:inline-flex}.site-logo__copy{display:flex;flex-direction:column;gap:1px;line-height:1.1}.site-logo__sub{color:#64748b;font-size:10px;font-weight:700;letter-spacing:.08em}@media(max-width:640px){.site-logo__mark{width:30px!important;height:30px!important;border-radius:10px!important}.site-logo__sub{display:none}}:root{--c-brand-1: #0f1b46;--c-brand-2: #2545d8;--c-brand-3: #13e2c7;--c-primary: #1455d9;--c-primary-dark: #0b1f59;--c-accent: #20f3d2;--c-accent-2: #0ea5e9;--c-bg: #f8fafc;--c-bg-2: #f1f5f9;--c-surface: #ffffff;--c-surface-elev: #ffffff;--c-text: #0f172a;--c-text-soft: #334155;--c-text-muted: #64748b;--c-border: #e2e8f0;--c-border-strong: #cbd5e1;--c-success: #10b981;--c-warning: #f59e0b;--c-info: #06b6d4;--c-danger: #ef4444;--radius-sm: 8px;--radius: 14px;--radius-lg: 20px;--radius-xl: 28px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04), 0 1px 3px rgba(15, 23, 42, .06);--shadow-md: 0 4px 6px rgba(15, 23, 42, .05), 0 10px 15px rgba(15, 23, 42, .08);--shadow-lg: 0 10px 15px rgba(15, 23, 42, .08), 0 20px 35px rgba(15, 23, 42, .1);--shadow-xl: 0 25px 50px rgba(15, 23, 42, .18);--shadow-glow: 0 0 0 4px rgba(32, 243, 210, .18), 0 12px 32px rgba(14, 165, 233, .32);--max-w: 760px;--max-w-wide: 1120px;--grad-brand: linear-gradient(135deg, #0f1b46 0%, #1455d9 46%, #13e2c7 100%);--grad-brand-soft: linear-gradient(135deg, rgba(20, 85, 217, .08) 0%, rgba(19, 226, 199, .12) 100%);--grad-cyan: linear-gradient(135deg, #20f3d2 0%, #0ea5e9 52%, #2545d8 100%);--grad-amber: linear-gradient(135deg, #14b8a6 0%, #22c55e 100%);--font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", system-ui, sans-serif;--font-body: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-body);color:var(--c-text);background:var(--c-bg);line-height:1.85;font-size:16px;font-feature-settings:"palt" 1;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body:before{content:"";position:fixed;inset:0;z-index:-1;background-image:radial-gradient(circle at 18% 8%,rgba(14,165,233,.08) 0%,transparent 34%),radial-gradient(circle at 84% 88%,rgba(32,243,210,.08) 0%,transparent 38%);pointer-events:none}a{color:var(--c-primary);text-decoration:none;transition:color .15s,opacity .15s}a:hover{color:var(--c-primary-dark)}img{max-width:100%;height:auto;display:block}hr{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-border),transparent);margin:40px 0}::selection{background:#20f3d23d;color:var(--c-text)}.prose{max-width:var(--max-w);margin:0 auto;padding:0 16px;font-size:16px}.prose h1{font-size:clamp(26px,4.2vw,36px);line-height:1.4;font-weight:800;letter-spacing:0;margin:0 0 24px;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}.prose h2{font-size:clamp(20px,3vw,24px);font-weight:800;letter-spacing:0;margin:58px 0 22px;padding:18px 20px 18px 54px;background:linear-gradient(135deg,#ecfefff5,#fffffffa 72%),var(--grad-brand-soft);color:var(--c-text);border:1px solid rgba(20,85,217,.16);border-radius:var(--radius-sm);position:relative;box-shadow:var(--shadow-sm);overflow:hidden}.prose h2:before{content:"";position:absolute;left:18px;top:50%;width:22px;height:22px;border-radius:8px;background:var(--grad-cyan);box-shadow:0 0 0 5px #20f3d224,0 8px 20px #0ea5e933;transform:translateY(-50%) rotate(45deg)}.prose h2:after{content:"";position:absolute;right:0;top:0;width:120px;height:100%;background:linear-gradient(90deg,transparent,rgba(32,243,210,.1)),repeating-linear-gradient(90deg,rgba(20,85,217,.08) 0 1px,transparent 1px 16px);pointer-events:none}.prose h3{font-size:19px;font-weight:700;margin:36px 0 14px;padding:4px 0 4px 16px;border-left:5px solid;border-image:var(--grad-brand) 1;background:linear-gradient(90deg,rgba(99,102,241,.06),transparent 80%)}.prose p{margin:0 0 18px;color:var(--c-text-soft)}.prose strong{color:var(--c-text);font-weight:700}.prose ul,.prose ol{padding-left:1.4em;margin:0 0 18px;color:var(--c-text-soft)}.prose li{margin:6px 0}.prose ul li::marker{color:var(--c-primary)}.prose blockquote{border-left:4px solid var(--c-primary);background:linear-gradient(135deg,#ecfeff,#fff 60%);margin:18px 0;padding:14px 20px;color:var(--c-text-soft);border-radius:0 var(--radius) var(--radius) 0;box-shadow:var(--shadow-sm)}.prose table{width:100%;border-collapse:collapse;margin:20px 0;background:var(--c-surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);font-size:14px}.prose th,.prose td{padding:14px;text-align:left;border-bottom:1px solid var(--c-border)}.prose th{background:linear-gradient(135deg,#f1f5f9,#e2e8f0);font-weight:700;color:var(--c-text)}.prose tr:last-child td{border-bottom:0}.prose tr:hover td{background:#6366f108}.prose code{background:#1e293b;color:#e2e8f0;padding:2px 8px;border-radius:6px;font-size:.88em;font-family:SF Mono,Menlo,Monaco,Consolas,monospace}.prose img{border-radius:var(--radius);box-shadow:var(--shadow-lg);margin:24px 0}.site-header{background:#ffffffd9;backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(226,232,240,.7);position:sticky;top:0;z-index:50;transition:background .2s}.site-header__inner{max-width:var(--max-w-wide);margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo{font-weight:900;font-size:20px;color:var(--c-text);text-decoration:none;letter-spacing:0;display:inline-flex;align-items:center;gap:10px}.site-logo__mark{width:32px;height:32px;border-radius:9px;background:var(--grad-brand);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:16px;box-shadow:var(--shadow-md)}.site-logo__text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}.site-nav{display:flex;gap:6px;font-size:14px;font-weight:600;flex-wrap:wrap}.site-nav a{color:var(--c-text-soft);text-decoration:none;padding:8px 12px;border-radius:8px;transition:background .15s,color .15s}.site-nav a:hover{color:var(--c-primary);background:#6366f114}.site-footer{margin-top:80px;background:linear-gradient(135deg,#07111f,#0f1b46 52%,#083b4d);color:#cbd5e1;padding:48px 20px 32px;font-size:14px;position:relative;overflow:hidden}.site-footer:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 10% 20%,rgba(32,243,210,.18) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(14,165,233,.16) 0%,transparent 40%);pointer-events:none}.site-footer a{color:#94a3b8;text-decoration:none;transition:color .15s}.site-footer a:hover{color:#fff}.site-footer__inner{max-width:var(--max-w-wide);margin:0 auto;position:relative;z-index:1}.site-footer__nav{display:flex;gap:6px 18px;flex-wrap:wrap;margin-top:20px}.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;border:none;cursor:pointer;transition:transform .15s,box-shadow .15s,background .2s;white-space:nowrap;font-family:inherit}.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow);color:#fff}.btn-ghost{background:#ffffff1f;backdrop-filter:blur(8px);color:#fff;border:1px solid rgba(255,255,255,.35)}.btn-ghost:hover{background:#ffffff38;color:#fff;transform:translateY(-2px)}.btn-light{background:#fff;color:var(--c-primary);box-shadow:var(--shadow-md)}.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:var(--c-primary-dark)}.container{max-width:var(--max-w);margin:0 auto;padding:0 16px}.container-wide{max-width:var(--max-w-wide);margin:0 auto;padding:0 20px}.muted{color:var(--c-text-muted)}.text-center{text-align:center}.section-title{font-size:clamp(22px,3vw,28px);font-weight:800;margin:0 0 8px;letter-spacing:0;color:var(--c-text)}.section-title--grad{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}.section-lede{color:var(--c-text-muted);font-size:15px;margin:0 0 28px}@media(prefers-reduced-motion:no-preference){.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}.reveal.is-visible{opacity:1;transform:none}}@media(max-width:640px){.site-header__inner{padding:10px 14px}.site-header__inner{display:grid;grid-template-columns:1fr;align-items:start;gap:8px}.site-nav{width:100%;font-size:13px;gap:4px;flex-wrap:nowrap;overflow-x:auto;padding-bottom:2px}.site-nav a{padding:6px 8px;white-space:nowrap}.site-logo{font-size:17px;width:100%}.site-logo__text{white-space:nowrap}.site-logo__mark{width:28px;height:28px;font-size:14px}}:focus-visible{outline:3px solid rgba(32,243,210,.5);outline-offset:2px;border-radius:6px}#main{min-height:60vh}