:root{--bg: #f2ece0;--surface: #ffffff;--surface-alt: #faf6f0;--border: #ddd5c3;--border-subtle:#ece5d8;--primary: #1b3d37;--primary-700: #254f47;--primary-fg: #ffffff;--accent: #3d9e84;--accent-100: #e8f4f0;--accent-800: #1b4a3e;--text: #1a1f1b;--text-muted: #677069;--text-subtle: #9ba09b;--err: #c0392b;--err-bg: #fdf0ee;--shadow-sm: 0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);--r-sm: 6px;--r-md: 10px;--r-pill: 9999px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6;color:var(--text);background:var(--bg);font-size:16px}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh}h1,h2,h3{margin:0;line-height:1.15;letter-spacing:-.025em}p{margin:0}.topbar{position:sticky;top:0;z-index:20;height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 clamp(16px,4vw,48px);background:#f2ece0e0;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-subtle)}.brand{display:flex;align-items:baseline;gap:8px;color:var(--text);text-decoration:none;font-weight:800;font-size:1.08rem;letter-spacing:-.04em;transition:opacity .15s;flex-shrink:0}.brand:hover{opacity:.7}.brand span{font-weight:400;font-size:.76rem;color:var(--text-muted);letter-spacing:0}.nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap}.nav a{font-size:.82rem;color:var(--text-muted);text-decoration:none;padding:5px 9px;border-radius:var(--r-sm);transition:color .15s,background .15s}.nav a:hover{color:var(--text);background:#0000000d}.nav a[aria-current=page]{color:var(--text);font-weight:600}.hero{max-width:1040px;margin:0 auto;padding:clamp(52px,8vw,100px) clamp(16px,4vw,48px) clamp(48px,7vw,80px)}.hero-head{margin-bottom:36px}.hero-head h1{font-size:clamp(2.25rem,7vw,4.5rem);font-weight:800;margin-bottom:12px}.hero-tagline{font-size:1.08rem;color:var(--text-muted);max-width:420px;line-height:1.7}.page{max-width:700px;margin:0 auto;padding:clamp(40px,7vw,80px) clamp(16px,4vw,48px)}.page h1{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:800;margin-bottom:24px}.page h2{font-size:1.1rem;font-weight:700;margin:32px 0 8px}.page p,.page li{font-size:.97rem;line-height:1.8;color:var(--text-muted)}.board-shell{max-width:700px;margin:0 auto;padding:clamp(28px,5vw,52px) clamp(16px,4vw,48px) 80px}.board-shell h1{font-size:clamp(1.75rem,5vw,2.75rem);font-weight:800;margin:10px 0 4px}.form,.result,.block{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-sm)}.compact{max-width:540px}.tool{display:grid;gap:20px;grid-template-columns:1fr minmax(256px,360px);align-items:start}label{display:grid;gap:6px;margin:0 0 14px}label>span{font-size:.76rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em}fieldset{border:0;padding:0;margin:0 0 14px;display:grid;gap:0}fieldset legend{font-size:.76rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px;padding:0;float:left;width:100%}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:var(--r-sm);font:inherit;font-size:.92rem;padding:8px 11px;background:var(--surface);color:var(--text);transition:border-color .15s,box-shadow .15s;outline:none;appearance:none;-webkit-appearance:none}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #3d9e8424}textarea{resize:vertical;min-height:96px;line-height:1.6}select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' fill='none' viewBox='0 0 12 7'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23677069' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 11px center;padding-right:34px;cursor:pointer}.choice-grid{display:grid;gap:6px;grid-template-columns:repeat(3,1fr)}.choice{display:flex;align-items:center;gap:8px;padding:7px 10px;border:1px solid var(--border);border-radius:var(--r-sm);cursor:pointer;font-size:.87rem;margin:0;transition:border-color .15s,background .15s}.choice:has(input:checked){border-color:var(--accent);background:var(--accent-100);color:var(--accent-800)}.choice:hover:not(:has(input:checked)){border-color:var(--text-subtle);background:var(--surface-alt)}.choice input[type=radio],.choice input[type=checkbox]{width:15px;height:15px;margin:0;padding:0;flex-shrink:0;accent-color:var(--accent)}button{font:inherit;cursor:pointer;border-radius:var(--r-sm);font-size:.86rem;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:all .15s;white-space:nowrap;background:var(--surface);border:1px solid var(--border);color:var(--text-muted);padding:7px 12px}button:hover{background:var(--surface-alt);color:var(--text);border-color:var(--text-subtle)}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:not-allowed;transform:none}.primary{background:var(--primary);border-color:var(--primary);color:var(--primary-fg);width:100%;padding:11px 16px;font-size:.94rem;font-weight:600;box-shadow:0 1px 3px #0003;margin-top:6px;border-radius:var(--r-sm)}.primary:hover:not(:disabled){background:var(--primary-700);border-color:var(--primary-700);color:var(--primary-fg);box-shadow:0 3px 10px #00000038}.as-link{display:inline-flex;align-items:center;text-decoration:none}.toolbar{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}.toolbar button{border-radius:var(--r-pill);padding:5px 12px;font-size:.79rem}.toolbar button[aria-pressed=true]{background:var(--primary);border-color:var(--primary);color:var(--primary-fg)}.input-group{display:flex;gap:6px}.input-group input{flex:1;min-width:0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,monospace;font-size:.74rem;background:var(--surface-alt);color:var(--text-muted);padding:7px 10px}.btn-copy{flex-shrink:0;padding:7px 11px;font-size:.78rem;min-width:60px;border-radius:var(--r-sm)}.btn-copy.copied{background:var(--accent);border-color:var(--accent);color:#fff}.notice{background:var(--accent-100);border-left:3px solid var(--accent);color:var(--accent-800);padding:10px 13px;border-radius:0 var(--r-sm) var(--r-sm) 0;font-size:.86rem;line-height:1.65}.muted{color:var(--text-muted);font-size:.87rem}.error{background:var(--err-bg);color:var(--err);font-size:.86rem;font-weight:500;padding:8px 11px;border-radius:var(--r-sm);margin-top:8px}.message{font-size:1rem;line-height:1.8;color:var(--text-muted);white-space:pre-line;margin:20px 0 28px}.result h2{font-size:.88rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:14px}.result-link+.result-link{margin-top:14px}.result-link-role{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:var(--text-subtle);margin-bottom:5px}.blocks{display:grid;gap:8px;margin:20px 0}.block{padding:16px 20px}.block-label{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-subtle);margin-bottom:8px}.block p{white-space:pre-wrap;line-height:1.75;color:var(--text)}.block h2{font-size:1.15rem;font-weight:700;color:var(--text)}.block ul{margin:0;padding-left:20px;line-height:1.85;color:var(--text)}.block a{word-break:break-all}.board-expiry{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;color:var(--text-subtle);margin-bottom:20px}.board-expiry-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--shadow-sm);margin-top:8px}.panel-title{font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-subtle);margin-bottom:14px}.loading{display:flex;align-items:center;gap:10px;color:var(--text-subtle);font-size:.9rem;padding:40px 0}.loading-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 1.2s ease-in-out infinite}.loading-dot:nth-child(2){animation-delay:.2s}.loading-dot:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}@media(max-width:760px){.topbar{height:auto;padding:10px 16px;flex-wrap:wrap;position:static;backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--bg)}.nav{gap:2px}.tool{grid-template-columns:1fr}.choice-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.choice-grid{grid-template-columns:1fr}}