*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;overflow-x:hidden}
:root{--bg:#080b12;--paper:#f7f4ea;--panel:#ffffff;--ink:#090a0d;--muted:#59606e;--accent:#00d4ff;--accent2:#ff2d9e;--yellow:#ffe600;--green:#39ff14;--orange:#ff6b35;--violet:#9b5de5;--line:#090a0d;--shadow:8px 8px 0 #090a0d;--display:Impact,Haettenschweiler,"Arial Black",sans-serif}
body.light{--bg:#eceff3;--paper:#fffdf7;--panel:#fff;--ink:#090a0d;--muted:#4c5360;--line:#090a0d}
button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}a{color:inherit}code,.code-input{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
#scroll-progress{position:fixed;z-index:9999;top:0;left:0;height:5px;width:0;background:linear-gradient(90deg,var(--yellow),var(--accent2),var(--accent),var(--green));box-shadow:0 0 15px var(--accent)}
.ticker{position:sticky;top:0;z-index:100;background:#090a0d;color:var(--yellow);border-bottom:3px solid #090a0d;overflow:hidden;white-space:nowrap}.ticker-track{display:inline-flex;gap:4rem;padding:9px 0;font-weight:1000;letter-spacing:.12em;font-size:.72rem;animation:ticker 42s linear infinite}.ticker-track span:nth-child(3n){color:var(--accent)}.ticker-track span:nth-child(3n+2){color:var(--accent2)}@keyframes ticker{to{transform:translateX(-50%)}}
.site-header{position:sticky;top:35px;z-index:90;background:#090a0df4;color:#fff;border-bottom:4px solid var(--yellow);backdrop-filter:blur(10px)}.header-inner{width:min(1480px,calc(100% - 28px));margin:auto;min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}.logo{width:52px;height:52px;display:grid;place-items:center;background:var(--yellow);color:#090a0d;border:3px solid #fff;box-shadow:5px 5px 0 #fff;font-family:var(--display);font-size:1.2rem}.brand-copy{display:grid;min-width:0}.brand-copy b{font-family:var(--display);font-size:1.25rem;letter-spacing:.02em}.brand-copy small{color:#d3d8e4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.desktop-nav{display:flex;align-items:center;gap:18px}.desktop-nav a{text-decoration:none;text-transform:uppercase;font-weight:1000;font-size:.7rem;letter-spacing:.08em}.desktop-nav a:hover{color:var(--yellow)}
.btn,.menu-toggle,.quick-row button,.mode-btn{border:3px solid var(--ink);background:var(--paper);color:var(--ink);padding:11px 15px;font-weight:1000;text-transform:uppercase;letter-spacing:.05em;box-shadow:4px 4px 0 var(--ink);cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}.btn:hover,.menu-toggle:hover,.quick-row button:hover,.mode-btn:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink)}.btn:active,.menu-toggle:active,.quick-row button:active,.mode-btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}.btn.primary{background:var(--yellow);color:#090a0d}.btn.small{padding:8px 10px;font-size:.7rem}.menu-toggle{display:none;background:var(--yellow)}
.mobile-panel{position:fixed;top:112px;right:12px;z-index:120;width:min(330px,calc(100vw - 24px));display:grid;gap:8px;padding:16px;background:var(--paper);border:4px solid var(--ink);box-shadow:10px 10px 0 #000;transform:translateX(calc(100% + 30px));transition:.25s}.mobile-panel.open{transform:none}.mobile-panel a{padding:14px;border:2px solid var(--ink);text-decoration:none;font-weight:1000;text-transform:uppercase}.nav-backdrop{position:fixed;inset:0;z-index:110;background:#000a;opacity:0;pointer-events:none;transition:.2s}.nav-backdrop.open{opacity:1;pointer-events:auto}body.nav-open{overflow:hidden}
.shell{width:min(1480px,calc(100% - 28px));margin:auto}.hero{margin:24px 0 0;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,.55fr);border:4px solid var(--ink);box-shadow:10px 10px 0 var(--ink);overflow:hidden;background:var(--yellow)}.grain{position:relative}.grain:after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.18;background-image:repeating-linear-gradient(0deg,#0000 0 3px,#0002 4px);mix-blend-mode:multiply}.hero-copy{position:relative;z-index:1;padding:clamp(34px,6vw,80px);color:#090a0d}.eyebrow,.chip,.engine-badge{display:inline-flex;align-items:center;width:max-content;max-width:100%;border:2px solid #090a0d;background:#fff;color:#090a0d;padding:6px 10px;font-size:.68rem;font-weight:1000;text-transform:uppercase;letter-spacing:.1em}.hero h1{font-family:var(--display);font-size:clamp(4rem,10vw,10rem);line-height:.78;margin:.28em 0 .25em;letter-spacing:-.035em}.hero h1 .stroke{color:transparent;-webkit-text-stroke:4px #090a0d}.hero p{max-width:75ch;font-size:clamp(.9rem,1.2vw,1.05rem);line-height:1.8;font-weight:700}.hero-actions,.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.hero-actions a{text-decoration:none}.hero-side{display:grid;grid-template-columns:1fr 1fr;background:#090a0d}.hero-stat{min-height:180px;padding:22px;display:flex;flex-direction:column;justify-content:flex-end;border:2px solid #090a0d;color:#fff}.hero-stat:nth-child(1){background:var(--accent2);color:#090a0d}.hero-stat:nth-child(2){background:#090a0d}.hero-stat:nth-child(3){background:var(--accent);color:#090a0d}.hero-stat:nth-child(4){background:#fff;color:#090a0d}.hero-stat b{font-family:var(--display);font-size:clamp(3rem,6vw,6rem);line-height:.8}.hero-stat span{font-size:.67rem;text-transform:uppercase;font-weight:1000;letter-spacing:.12em;margin-top:12px}
.section{padding:78px 0;position:relative}.section-head{display:flex;justify-content:space-between;gap:36px;align-items:flex-end;margin-bottom:32px;position:relative;z-index:1}.section-head h2{font-family:var(--display);font-size:clamp(3rem,7vw,7rem);line-height:.84;margin:.18em 0 0;text-transform:uppercase}.section-head p{max-width:58ch;line-height:1.7;color:#dfe5f2}.body.light .section-head p{color:var(--muted)}.section>.section-head,.section>.grid,.section>.workspace-layout,.section>.arch-grid,.section>.warning-box,.section>.button-row{position:relative;z-index:1}
.workspace-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:18px}.mode-nav{display:grid;align-content:start;gap:9px;position:sticky;top:135px;height:max-content}.mode-btn{text-align:left;background:#111726;color:#fff;border-color:#fff;box-shadow:4px 4px 0 var(--accent)}.mode-btn span{color:var(--yellow);margin-right:8px}.mode-btn.active{background:var(--yellow);color:#090a0d;border-color:#090a0d;box-shadow:6px 6px 0 var(--accent2)}.mode-btn.active span{color:#090a0d}.lab-stage{min-width:0}.lab-panel{display:none;background:var(--panel);border:4px solid var(--ink);box-shadow:var(--shadow);padding:clamp(18px,3vw,32px);color:var(--ink)}.lab-panel.active{display:block}.panel-title{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:20px}.panel-title h3{font-family:var(--display);font-size:clamp(2.2rem,5vw,5rem);line-height:.9;margin:.18em 0 0;text-transform:uppercase}.engine-badge{background:var(--ink);color:var(--accent);border-color:var(--ink);white-space:nowrap}
.field{display:grid;gap:7px;margin-bottom:14px}.field>span{font-size:.72rem;font-weight:1000;text-transform:uppercase;letter-spacing:.08em}.input,textarea,select{width:100%;border:3px solid var(--ink);background:var(--paper);color:var(--ink);padding:12px 13px;outline:none;border-radius:0}.input:focus,textarea:focus,select:focus{box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 50%,transparent)}textarea{min-height:112px;resize:vertical;line-height:1.55}.code-input,textarea{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.form-grid{display:grid;gap:14px}.form-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.form-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.form-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.quick-row{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:7px;margin:18px 0}.quick-row button{padding:9px 5px;background:#111726;color:#fff;border-color:#111726;box-shadow:3px 3px 0 var(--accent)}
.result-box{margin-top:20px;background:#080b12;color:#b7ffb1;border:4px solid var(--ink);min-height:150px;position:relative;overflow:auto;box-shadow:inset 0 0 0 2px #20283a}.result-label{position:sticky;top:0;background:var(--accent);color:#090a0d;padding:7px 10px;font-weight:1000;text-transform:uppercase;letter-spacing:.08em;font-size:.68rem}.result-box pre{white-space:pre-wrap;word-break:break-word;margin:0;padding:18px;line-height:1.65;font-size:.95rem}.result-box.busy pre:after{content:" ▌";animation:blink .7s steps(2) infinite}@keyframes blink{50%{opacity:0}}.advanced-box{margin-top:20px;border:3px solid var(--ink);background:var(--paper);padding:14px}.advanced-box summary{font-weight:1000;text-transform:uppercase;cursor:pointer;margin:-14px;padding:14px;background:var(--yellow);border-bottom:3px solid transparent}.advanced-box[open] summary{margin-bottom:16px;border-bottom-color:var(--ink)}
.plot-wrap{border:4px solid var(--ink);background:#fff;overflow:auto;margin-top:20px}.plot-wrap canvas{display:block;width:100%;min-width:700px;height:auto}.finance-box{margin-top:24px;padding:20px;border:4px solid var(--ink);background:var(--paper)}.finance-box h4{font-family:var(--display);font-size:2rem;margin:0 0 18px;text-transform:uppercase}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:16px}.metric-card{background:var(--paper);border:3px solid var(--ink);padding:14px;min-width:0}.metric-card b{display:block;font-family:var(--display);font-size:clamp(1.6rem,3.4vw,3rem);line-height:1;overflow-wrap:anywhere}.metric-card span{display:block;margin-top:7px;color:var(--muted);font-size:.67rem;font-weight:1000;text-transform:uppercase;letter-spacing:.07em}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:18px}.card{grid-column:span 4;background:var(--panel);color:var(--ink);border:3px solid var(--ink);padding:20px;box-shadow:var(--shadow);min-width:0}.card.full{grid-column:1/-1}.card h3{font-family:var(--display);font-size:1.8rem;margin:0 0 12px;text-transform:uppercase}.test-grid .card{position:relative}.test-status{display:inline-flex;padding:4px 8px;border:2px solid var(--ink);background:#ddd;color:#090a0d;font-weight:1000;font-size:.65rem;text-transform:uppercase}.test-status.pass{background:var(--green)}.test-status.fail{background:var(--accent2);color:#fff}.test-status.running{background:var(--yellow)}.history-list{display:grid;gap:10px;max-height:540px;overflow:auto}.history-item{border:3px solid var(--ink);background:var(--paper);padding:13px;display:grid;grid-template-columns:120px 1fr auto;gap:14px;align-items:start}.history-item time{font-size:.72rem;color:var(--muted)}.history-item pre{margin:4px 0 0;white-space:pre-wrap;word-break:break-word}.history-item button{border:2px solid var(--ink);background:var(--accent2);color:#fff;font-weight:1000;cursor:pointer}
.arch-grid{display:grid;grid-template-columns:repeat(4,1fr);border:4px solid var(--ink);box-shadow:var(--shadow)}.arch-step{padding:22px;border:2px solid var(--ink);background:var(--panel);color:var(--ink)}.arch-step b{display:block;font-family:var(--display);font-size:2rem;text-transform:uppercase}.arch-step span{display:block;color:var(--muted);margin-top:10px;line-height:1.6}.warning-box{margin-top:26px;background:var(--orange);color:#090a0d;border:4px solid var(--ink);box-shadow:var(--shadow);padding:24px}.warning-box b{font-family:var(--display);font-size:2rem;text-transform:uppercase}.warning-box p{max-width:95ch;line-height:1.7}.ghost{font-family:var(--display);font-size:clamp(6rem,18vw,18rem);opacity:.035;position:absolute;right:-1rem;top:1rem;line-height:.8;pointer-events:none;user-select:none;white-space:nowrap;color:#fff}
.scroll-note{position:fixed;right:12px;top:50%;z-index:60;writing-mode:vertical-rl;background:#090a0d;color:var(--yellow);padding:10px 7px;border:2px solid var(--yellow);font-size:.58rem;font-weight:1000;letter-spacing:.12em;text-transform:uppercase}.toast-wrap{position:fixed;right:16px;bottom:16px;z-index:200;display:grid;gap:8px}.toast{background:#090a0d;color:#fff;border:3px solid var(--accent);padding:12px 14px;box-shadow:5px 5px 0 #000;max-width:360px}.install-fab{position:fixed;right:20px;bottom:20px;z-index:80;display:none}.install-fab.show{display:inline-flex}footer{background:#090a0d;color:#fff;padding:30px max(18px,calc((100vw - 1480px)/2));display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;border-top:4px solid var(--yellow)}footer b{color:var(--accent)}footer>span:nth-child(2){background:#fff;color:#090a0d;padding:7px 10px;border:2px solid #fff;font-weight:1000}
@media(max-width:1100px){.workspace-layout{grid-template-columns:1fr}.mode-nav{position:static;grid-template-columns:repeat(4,minmax(0,1fr))}.mode-btn{text-align:center}.form-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-row{grid-template-columns:repeat(5,1fr)}}
@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:block}.hero{grid-template-columns:1fr}.hero-side{min-height:250px}.section-head{align-items:flex-start;flex-direction:column}.arch-grid{grid-template-columns:repeat(2,1fr)}.card{grid-column:span 6}.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.ticker-track{font-size:.66rem}.site-header{top:34px}.header-inner,.shell{width:min(100% - 16px,1480px)}.brand-copy small{max-width:58vw}.hero{margin-top:12px;box-shadow:5px 5px 0 var(--ink)}.hero-copy{padding:30px 18px}.hero h1{font-size:clamp(3.3rem,19vw,6rem)}.hero-side{grid-template-columns:1fr 1fr}.hero-stat{min-height:120px;padding:15px}.section{padding:48px 0}.section-head h2{font-size:clamp(3rem,16vw,5rem)}.mode-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-panel{padding:15px;box-shadow:5px 5px 0 var(--ink)}.panel-title{flex-direction:column}.form-grid.two,.form-grid.three,.form-grid.four{grid-template-columns:1fr}.quick-row{grid-template-columns:repeat(4,1fr)}.metric-grid{grid-template-columns:1fr 1fr}.card{grid-column:1/-1}.arch-grid{grid-template-columns:1fr}.history-item{grid-template-columns:1fr}.scroll-note{display:none}.mobile-panel{top:102px}footer>span:nth-child(2){width:100%;text-align:center}.plot-wrap canvas{min-width:600px}}
@media(pointer:coarse){.btn:hover,.menu-toggle:hover,.quick-row button:hover,.mode-btn:hover{transform:none;box-shadow:4px 4px 0 var(--ink)}}
@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}}
:focus-visible{outline:4px solid var(--accent2);outline-offset:3px}::selection{background:var(--accent2);color:#090a0d}
/* V8 overflow hardening */
html,body{max-width:100%;overflow-x:clip}.hero,.hero-copy,.hero-side,.lab-stage,.lab-panel{min-width:0}.hero h1{overflow-wrap:normal;word-break:normal;white-space:nowrap}.mobile-panel{max-width:calc(100vw - 24px)}
@media(max-width:680px){.hero h1{font-size:clamp(2.8rem,14vw,5.2rem);letter-spacing:-.045em}.hero-copy p{overflow-wrap:anywhere}.engine-badge{white-space:normal}.shell{width:calc(100% - 24px)}}

/* V8 Standard Calculator and Date Calculation */
.standard-shell{max-width:760px;margin:0 auto;background:#111726;border:4px solid var(--ink);box-shadow:10px 10px 0 var(--accent);padding:18px}
.standard-display{background:#05070c;color:#fff;border:3px solid #fff;padding:18px 20px;min-height:126px;display:flex;flex-direction:column;align-items:flex-end;justify-content:flex-end;overflow:hidden}
.standard-expression{min-height:25px;color:#aab4ca;font-size:.8rem;word-break:break-all}
.standard-display output{font-family:var(--display);font-size:clamp(2.4rem,7vw,5.4rem);line-height:1;text-align:right;width:100%;overflow-wrap:anywhere}
.memory-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr)) minmax(120px,1.4fr);gap:7px;margin:12px 0}
.memory-row button{background:#20283a;color:#fff;border:2px solid #fff;box-shadow:3px 3px 0 var(--accent);padding:10px;font-weight:1000;cursor:pointer}
.memory-row span{display:flex;align-items:center;justify-content:center;background:var(--yellow);color:#090a0d;border:2px solid #090a0d;font-weight:1000;padding:8px;overflow-wrap:anywhere}
.standard-keypad{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}
.standard-keypad .key{min-height:68px;border:3px solid #fff;box-shadow:4px 4px 0 #000;font-family:var(--display);font-size:1.25rem;cursor:pointer}
.standard-keypad .number{background:#fff;color:#090a0d}
.standard-keypad .utility{background:#d9dee8;color:#090a0d}
.standard-keypad .operator{background:var(--accent);color:#090a0d}
.standard-keypad .equals{background:var(--yellow);color:#090a0d}
.standard-keypad .key:active{transform:translate(3px,3px);box-shadow:1px 1px 0 #000}
.standard-help{margin-top:15px;color:#cbd4e4;line-height:1.65;font-size:.78rem}
.date-labs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.date-card{background:var(--paper);border:4px solid var(--ink);padding:20px;box-shadow:6px 6px 0 var(--accent)}
.date-card h4{font-family:var(--display);font-size:clamp(1.7rem,3vw,2.8rem);text-transform:uppercase;margin:0 0 18px}
.compact-result{min-height:125px}
@media(max-width:1100px){.mode-nav{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:760px){.date-labs{grid-template-columns:1fr}.memory-row{grid-template-columns:repeat(3,1fr)}.memory-row span{grid-column:1/-1}.standard-keypad .key{min-height:58px}}
@media(max-width:680px){.mode-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.standard-shell{padding:10px}.standard-display{padding:14px}.standard-keypad{gap:7px}}