:root{--bg:#fff;--fg:#0f172a;--muted:#475569;--muted-2:#64748b;--border:#e2e8f0;--card:#fff;--shadow:0 10px 30px #02061714;--brand:#0f766e;--brand-2:#115e59;--radius:14px;--maxw:1040px;--padx:20px;--h1:clamp(2rem,3.2vw,3rem);--h2:clamp(1.5rem,2.2vw,2rem);--h3:1.25rem;--p:1rem;--small:.925rem;--lh:1.6}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);margin:0;padding:0}body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;line-height:var(--lh);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}a:hover{text-underline-offset:3px;text-decoration:underline}.container{max-width:var(--maxw);padding-left:var(--padx);padding-right:var(--padx);margin:0 auto}main{padding:28px 0 64px}h1{font-size:var(--h1);letter-spacing:-.02em;margin:0 0 12px;line-height:1.15}h2{font-size:var(--h2);letter-spacing:-.01em;margin:0 0 10px;line-height:1.2}h3{font-size:var(--h3);margin:0 0 8px;line-height:1.25}p{font-size:var(--p);color:var(--fg);margin:0 0 12px}.small{font-size:var(--small);color:var(--muted)}.muted{color:var(--muted)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.btn{border:1px solid var(--border);cursor:pointer;-webkit-user-select:none;user-select:none;background:#fff;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:10px 14px;font-weight:600;display:inline-flex}.btn:hover{filter:brightness(.98)}.btn:disabled{opacity:.6;cursor:not-allowed}.btnPrimary{background:var(--brand);border-color:var(--brand);color:#fff}.btnPrimary:hover{background:var(--brand-2);border-color:var(--brand-2)}.btnGhost{background:0 0}.input,.select,.textarea{border:1px solid var(--border);width:100%;color:var(--fg);background:#fff;border-radius:12px;padding:10px 12px;font-size:1rem}.textarea{resize:vertical;min-height:110px}.input:focus,.select:focus,.textarea:focus{border-color:#0f766e8c;outline:none;box-shadow:0 0 0 4px #0f766e24}.label{margin-bottom:6px;font-weight:600;display:block}.notice{border:1px solid var(--border);color:var(--muted);background:#f8fafc;border-radius:12px;padding:12px 14px}.grid{gap:16px;display:grid}.grid2{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}@media (max-width:760px){.grid2{grid-template-columns:1fr}}.article{max-width:820px;margin:0 auto}.article h1{margin-top:0}.article h2{margin-top:24px}.article h3{margin-top:18px}.article p{color:var(--fg);margin:0 0 14px}.article ul,.article ol{color:var(--fg);margin:10px 0 16px 22px}.article li{margin:6px 0}.article blockquote{border-left:4px solid var(--border);color:var(--muted);background:#f8fafc;border-radius:12px;margin:16px 0;padding:12px 14px}.article code{border:1px solid var(--border);background:#f1f5f9;border-radius:8px;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.95em}.article pre{color:#e2e8f0;background:#0b1220;border:1px solid #e2e8f026;border-radius:14px;padding:14px;overflow:auto}.article pre code{color:inherit;background:0 0;border:none;padding:0}.article a{color:var(--brand);text-underline-offset:3px;text-decoration:underline}.article a:hover{color:var(--brand-2)}