:root{--fn-ground: #04070d;--fn-ground-2: #04101c;--fn-ground-3: #050d18;--fn-ground-4: #060d18;--fn-panel: #07121f;--fn-panel-2: #0a1726;--fn-panel-3: #0f1c2e;--fn-panel-4: #0f1f33;--fn-line: #16314e;--fn-line-2: #1c3553;--fn-ink: #f1f5f9;--fn-ink-2: #cbe5fa;--fn-ink-3: #b0c4dc;--fn-ink-4: #a3cbe7;--fn-ink-5: #94c8ed;--fn-ink-mute: #6a8aab;--fn-ink-faint: #5a6e85;--fn-ink-max: #ffffff;--fn-accent: #38bdf8;--fn-accent-fill: #38bdf8;--fn-accent-2: #67e8f9;--fn-accent-3: #0ea5e9;--fn-accent-4: #7dd3fc;--fn-accent-rgb: 56, 189, 248;--fn-accent3-rgb: 14, 165, 233;--fn-on-accent: #04070d;--fn-good: #6ee79a;--fn-bad: #fca5a5;--fn-good-bg-1: #d5ffe7;--fn-bad-bg-1: #fee2e2;--fn-bad-bg-2: #f87171;--fn-veil-70: rgba(255, 255, 255, .7);--fn-veil-55: rgba(255, 255, 255, .55);--fn-veil-18: rgba(255, 255, 255, .18);--fn-veil-12: rgba(255, 255, 255, .12);--fn-glass-1: rgba(10, 22, 40, .78);--fn-glass-2: rgba(4, 10, 20, .78);--fn-glow-1: rgba(125, 211, 252, .1);--fn-grid: rgba(125, 211, 252, .07);--fn-speck: rgba(255, 255, 255, .6);--fn-shadow-lg: rgba(0, 0, 0, .65);--fn-shadow: rgba(0, 0, 0, .55);--fn-shadow-sm: rgba(0, 0, 0, .4);--fn-bevel: rgba(255, 255, 255, .08);--fn-bevel-2: rgba(255, 255, 255, .45);--fn-bevel-3: rgba(255, 255, 255, .35)}:root[data-theme=light]{--fn-ground: #f4f8fc;--fn-ground-2: #ffffff;--fn-ground-3: #fbfdff;--fn-ground-4: #f9fcfe;--fn-panel: #ffffff;--fn-panel-2: #f2f7fb;--fn-panel-3: #ecf3f9;--fn-panel-4: #e7f0f7;--fn-line: #d6e6f2;--fn-line-2: #c8dded;--fn-ink: #16212e;--fn-ink-2: #21405a;--fn-ink-3: #3c5870;--fn-ink-4: #2f566f;--fn-ink-5: #2a5470;--fn-ink-mute: #55708a;--fn-ink-faint: #6b8199;--fn-ink-max: #0b1119;--fn-accent: #0369a1;--fn-accent-fill: #38bdf8;--fn-accent-2: #0e7490;--fn-accent-3: #0284c7;--fn-accent-4: #0369a1;--fn-accent-rgb: 3, 105, 161;--fn-accent3-rgb: 2, 132, 199;--fn-on-accent: #04070d;--fn-good: #15803d;--fn-bad: #b3261e;--fn-good-bg-1: #dcfce7;--fn-bad-bg-1: #fee2e2;--fn-bad-bg-2: #ef4444;--fn-veil-70: rgba(11, 17, 25, .06);--fn-veil-55: rgba(11, 17, 25, .05);--fn-veil-18: rgba(11, 17, 25, .09);--fn-veil-12: rgba(11, 17, 25, .07);--fn-glass-1: rgba(255, 255, 255, .9);--fn-glass-2: rgba(246, 250, 253, .9);--fn-glow-1: rgba(3, 105, 161, .06);--fn-grid: rgba(3, 105, 161, .06);--fn-speck: rgba(11, 17, 25, .18);--fn-shadow-lg: rgba(11, 17, 25, .14);--fn-shadow: rgba(11, 17, 25, .11);--fn-shadow-sm: rgba(11, 17, 25, .08);--fn-bevel: rgba(255, 255, 255, .9);--fn-bevel-2: rgba(255, 255, 255, .85);--fn-bevel-3: rgba(255, 255, 255, .7)}body:has(.fn-shell){color-scheme:dark}:root[data-theme=light] body:has(.fn-shell){color-scheme:light}body:has(.fn-shell){--tm-rel-ink: var(--fn-ink);background:var(--fn-ground);color:var(--fn-ink)}body:has(.fn-shell) header{background:var(--fn-ground);border-bottom:1px solid var(--fn-panel-3)}body:has(.fn-shell) header .brand,body:has(.fn-shell) header nav a{color:var(--fn-ink)}body:has(.fn-shell) header .brand .logo{color:var(--fn-ink-max)}body:has(.fn-shell) header nav a:hover{color:var(--fn-accent-2)}body:has(.fn-shell) footer{background:var(--fn-ground);border-top:1px solid var(--fn-panel-3);color:var(--fn-ink-faint)}body:has(.fn-shell) main{padding:0}body:has(.fn-shell) main>.tool-h1{display:none}body:has(.fn-shell) main>.crumb-row{margin:0;padding:1.25rem clamp(1rem,4vw,3.5rem) 0}body:has(.fn-shell) .crumb{--crumb-link: var(--fn-ink-mute);--crumb-ink: var(--fn-ink);--crumb-hover: var(--fn-accent)}.fn-shell .back-btn{background:transparent;color:var(--fn-ink);border:1px solid var(--fn-line-2)}.fn-shell .back-btn:hover{background:var(--fn-accent-fill);color:var(--fn-ground);border-color:var(--fn-accent-fill)}.fn-shell,.fn-shell *,.fn-shell *:before,.fn-shell *:after{box-sizing:border-box}.fn-shell{position:relative;min-height:calc(100vh - 140px);padding:2.5rem clamp(1rem,4vw,3.5rem) 4rem;color:var(--fn-ink);isolation:isolate;overflow:hidden;perspective:1400px}.fn-bg{position:absolute;inset:0;z-index:-2;background:radial-gradient(900px 540px at 80% -10%,rgba(var(--fn-accent-rgb),.2),transparent 60%),radial-gradient(900px 600px at 0% 100%,rgba(var(--fn-accent3-rgb),.18),transparent 55%),radial-gradient(700px 380px at 50% 50%,var(--fn-glow-1),transparent 65%),linear-gradient(var(--fn-ground),var(--fn-ground-4))}.fn-bg:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(var(--fn-accent-rgb),.07) 1px,transparent 1px),linear-gradient(90deg,var(--fn-grid) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(1200px 700px at 50% 35%,#000,transparent 75%);transform:rotateX(40deg) scale(1.5);transform-origin:50% 100%;opacity:.7}.fn-bg:after{content:"";position:absolute;inset:0;background:radial-gradient(2px 2px at 12% 80%,var(--fn-veil-70) 50%,transparent 51%),radial-gradient(2px 2px at 22% 30%,var(--fn-veil-55) 50%,transparent 51%),radial-gradient(1.5px 1.5px at 55% 65%,var(--fn-speck) 50%,transparent 51%),radial-gradient(2px 2px at 78% 22%,var(--fn-veil-70) 50%,transparent 51%),radial-gradient(1.5px 1.5px at 88% 70%,var(--fn-veil-55) 50%,transparent 51%);animation:fn-twinkle 4s ease-in-out infinite}@keyframes fn-twinkle{0%,to{opacity:.6}50%{opacity:1}}.fn-top{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding-bottom:1.5rem;border-bottom:1px solid var(--fn-panel-3);margin-bottom:2rem}.fn-eyebrow{display:inline-flex;align-items:center;gap:.6rem;color:var(--fn-accent-2);font:700 .72rem ui-monospace,JetBrains Mono,monospace;letter-spacing:.2em;text-transform:uppercase}.fn-eyebrow-dot{width:8px;height:8px;border-radius:50%;background:radial-gradient(circle at 30% 30%,var(--fn-ink-max),var(--fn-accent-fill));box-shadow:0 0 14px rgba(var(--fn-accent-rgb),.95);animation:fn-glow 1.6s ease-in-out infinite}@keyframes fn-glow{0%,to{box-shadow:0 0 8px rgba(var(--fn-accent-rgb),.7)}50%{box-shadow:0 0 18px rgba(var(--fn-accent-rgb),1)}}.fn-title{margin:0 0 1rem;font-weight:900;font-size:clamp(2.6rem,7vw,5.4rem);line-height:.92;letter-spacing:-.045em;color:var(--fn-ink-max);text-shadow:0 1px 0 var(--fn-veil-12),0 4px 24px rgba(var(--fn-accent-rgb),.3),0 12px 40px rgba(var(--fn-accent3-rgb),.18)}.fn-title em{font-style:italic;font-weight:800;background:linear-gradient(180deg,var(--fn-ink-max) 0%,var(--fn-accent-2) 45%,var(--fn-accent-fill) 80%,var(--fn-accent-3) 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 6px 20px rgba(var(--fn-accent-rgb),.4))}.fn-dot{color:var(--fn-accent);-webkit-text-fill-color:var(--fn-accent-fill)}.fn-lead{color:var(--fn-ink-3);max-width:64ch;font-size:1.05rem;margin:0 0 2rem;line-height:1.6}.fn-lead code,.fn-lead b{color:var(--fn-ink-max)}.fn-card3d{position:relative;background:linear-gradient(180deg,var(--fn-glass-1) 0%,var(--fn-glass-2) 100%);border:1.5px solid rgba(var(--fn-accent-rgb),.28);border-radius:18px;padding:1.4rem 1.6rem;margin-bottom:1.2rem;transform-style:preserve-3d;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;box-shadow:0 0 0 1px rgba(var(--fn-accent-rgb),.12) inset,0 24px 60px var(--fn-shadow),0 8px 24px rgba(var(--fn-accent3-rgb),.18);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);will-change:transform}.fn-card3d:before{content:"";position:absolute;inset:0;border-radius:18px;pointer-events:none;background:linear-gradient(135deg,var(--fn-veil-18),transparent 35%,rgba(255,255,255,0) 70%,rgba(var(--fn-accent-rgb),.14));mix-blend-mode:overlay}.fn-card3d:hover{border-color:rgba(var(--fn-accent-rgb),.55);box-shadow:0 0 0 1px rgba(var(--fn-accent-rgb),.25) inset,0 30px 80px var(--fn-shadow-lg),0 10px 30px rgba(var(--fn-accent-rgb),.28)}.fn-pane-h{display:flex;align-items:center;justify-content:space-between;gap:.9rem;flex-wrap:wrap;margin-bottom:.85rem}.fn-label{color:var(--fn-ink-max);font:800 .78rem ui-monospace,JetBrains Mono,monospace;letter-spacing:.28em;text-transform:uppercase}.fn-label:before{content:"✦ ";color:var(--fn-accent)}.fn-hint{color:var(--fn-ink-3);font:600 .84rem ui-sans-serif,system-ui}.fn-hint code{background:var(--fn-panel);border:1px solid var(--fn-line);color:var(--fn-accent-2);padding:0 .35rem;border-radius:4px;font:700 .85em ui-monospace,monospace}.fn-btn{appearance:none;cursor:pointer;background:linear-gradient(180deg,var(--fn-panel-4) 0%,var(--fn-ground-3) 100%);border:1.5px solid var(--fn-line-2);border-radius:12px;color:var(--fn-ink);font:800 .86rem ui-sans-serif,system-ui;letter-spacing:.04em;padding:.55rem 1.05rem;transition:transform .15s,box-shadow .2s,background .2s,border-color .2s;box-shadow:inset 0 1px 0 var(--fn-bevel),0 4px 12px var(--fn-shadow-sm)}.fn-btn:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 var(--fn-veil-12),0 8px 22px rgba(var(--fn-accent-rgb),.4);border-color:var(--fn-accent-fill)}.fn-btn--primary{background:linear-gradient(180deg,var(--fn-accent-4) 0%,var(--fn-accent-fill) 50%,var(--fn-accent-3) 100%);color:var(--fn-ground);border-color:var(--fn-bevel-2);font-weight:900;box-shadow:0 0 0 1px var(--fn-veil-18) inset,0 10px 32px rgba(var(--fn-accent-rgb),.45),0 4px 14px rgba(var(--fn-accent3-rgb),.4)}.fn-btn--primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 0 0 1px var(--fn-bevel-3) inset,0 16px 40px rgba(var(--fn-accent-rgb),.6),0 8px 22px rgba(var(--fn-accent3-rgb),.6)}.fn-fields{display:grid;grid-template-columns:1fr;gap:.85rem}@media(min-width:720px){.fn-fields{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.fn-field--full{grid-column:1 / -1}}.fn-field{display:flex;flex-direction:column;gap:.4rem;min-width:0}.fn-field-lbl{color:var(--fn-ink-4);font:800 .7rem ui-monospace,JetBrains Mono,monospace;letter-spacing:.18em;text-transform:uppercase}.fn-input,.fn-select,.fn-textarea{width:100%;min-width:0;max-width:100%;background:linear-gradient(180deg,var(--fn-panel-2),var(--fn-ground-2));color:var(--fn-ink-max);border:1.5px solid var(--fn-line-2);border-radius:10px;padding:.7rem .95rem;font:700 1rem ui-sans-serif,system-ui;outline:0;transition:border-color .18s,box-shadow .18s}.fn-input:focus,.fn-select:focus,.fn-textarea:focus{border-color:var(--fn-accent-fill);box-shadow:0 0 0 4px rgba(var(--fn-accent-rgb),.22)}.fn-select{appearance:none;cursor:pointer;background:linear-gradient(180deg,var(--fn-panel-2),var(--fn-ground-2)) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%2338bdf8'><path d='M6 8 0 0h12z'/></svg>") no-repeat right .85rem center / 12px 8px;padding-right:2rem}.fn-select option{background:var(--fn-ground-2);color:var(--fn-ink-max)}.fn-figure{display:block;font:900 clamp(2.2rem,5.4vw,3.6rem)/1 ui-sans-serif,system-ui;letter-spacing:-.035em;background:linear-gradient(180deg,var(--fn-ink-max) 0%,var(--fn-accent-fill) 100%);-webkit-background-clip:text;background-clip:text;color:transparent;margin:.4rem 0 .3rem;text-shadow:0 4px 18px rgba(var(--fn-accent-rgb),.4);word-break:break-word}.fn-doc{margin-top:1.5rem;color:var(--fn-ink-3);max-width:78ch;line-height:1.65}.fn-doc-h{margin:1.4rem 0 .6rem;color:var(--fn-ink-max);font:900 1.4rem ui-sans-serif,system-ui;letter-spacing:-.01em}.fn-doc-h:before{content:"✦ ";color:var(--fn-accent)}.fn-doc p{margin:0 0 .85rem}.fn-doc code{background:var(--fn-panel);border:1px solid var(--fn-line);color:var(--fn-accent-2);padding:.05rem .4rem;border-radius:5px;font:700 .92em ui-monospace,monospace}.fn-doc b{color:var(--fn-ink-max)}.fn-formula{margin:.6rem 0 1.2rem;background:linear-gradient(180deg,var(--fn-panel),var(--fn-ground-2));border:1px solid var(--fn-line);border-radius:10px;padding:.95rem 1.1rem;color:var(--fn-ink-2);font:700 .92rem/1.55 ui-monospace,JetBrains Mono,monospace;white-space:pre-wrap;overflow-x:auto}@media(max-width:560px){.fn-shell{padding:1.25rem .85rem 2.5rem}.fn-formula{font-size:.82rem;padding:.8rem .95rem}.fn-fields{gap:.65rem}}