@import"https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&display=swap";:root{color-scheme:dark;--bg: #080d14;--panel: #0e1722;--panel-soft: #111d2a;--line: #263545;--text: #edf5fc;--muted: #91a4b7;--cyan: #62e6ed;--cyan-soft: rgba(98, 230, 237, .1);--green: #9be6b0;--radius: 18px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:radial-gradient(ellipse at 50% 0%,rgba(25,82,107,.18),transparent 42%),var(--bg);color:var(--text);font-family:Manrope,system-ui,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}body:before{position:fixed;z-index:-1;inset:0;background-image:linear-gradient(rgba(135,174,200,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(135,174,200,.025) 1px,transparent 1px);background-size:42px 42px;content:"";pointer-events:none}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}.site-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;padding:0 clamp(20px,5vw,76px);border-bottom:1px solid rgba(145,164,183,.15);background:#080d14e0;backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;width:38px;height:38px;place-items:center;border:1px solid rgba(98,230,237,.5);border-radius:11px;background:var(--cyan-soft);color:var(--cyan);font-weight:800;font-size:19px}.brand-mark span{font-size:11px;align-self:start}.brand-name,.footer-brand{font-size:13px;font-weight:800;letter-spacing:.13em}.brand-name span,.footer-brand span{color:var(--cyan)}.header-nav{display:flex;gap:28px;color:var(--muted);font-size:12px}.header-nav a:hover,.site-footer a:hover{color:var(--cyan)}.header-cta{padding:10px 15px;border:1px solid var(--line);border-radius:10px;font-size:12px;font-weight:700}.header-cta span{color:var(--cyan);margin-left:6px}main{width:min(1160px,calc(100% - 40px));margin:auto}.hero{padding:clamp(56px,8vw,100px) 0 42px;text-align:center}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-family:DM Mono,monospace;font-size:10px;letter-spacing:.16em;text-transform:uppercase}.eyebrow:before{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px #62e6edb3;content:""}.hero h1{max-width:850px;margin:22px auto 18px;font-size:clamp(38px,6.5vw,76px);line-height:1.08;letter-spacing:-.065em;font-weight:700}.hero h1 span{color:var(--cyan);background:linear-gradient(100deg,#9cf4ef,#62e6ed 48%,#8bb8ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{max-width:610px;margin:auto;color:var(--muted);font-size:15px}.trust-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 26px;margin-top:28px;color:#b1c1d0;font-family:DM Mono,monospace;font-size:10px}.trust-strip span:before{content:"✓ ";color:var(--cyan)}.workspace{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:18px;align-items:stretch}.panel{min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(145deg,#111d2af5,#0a111afa);box-shadow:0 18px 60px #00000024}.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:22px 24px;border-bottom:1px solid var(--line)}.panel-kicker{color:var(--muted);font:10px DM Mono,monospace;letter-spacing:.12em;text-transform:uppercase}.panel-head h2{margin:4px 0 0;font-size:17px;letter-spacing:-.03em}.step-tag{color:var(--cyan);font:11px DM Mono,monospace}.panel-body{padding:24px}.field-label{display:block;margin:0 0 8px;color:#b9c9d8;font-size:12px;font-weight:700}.field-row{display:grid;grid-template-columns:minmax(0,1fr) 90px;gap:10px;margin-bottom:19px}.field-row input,.field-row select,.shape-select{width:100%;min-width:0;min-height:47px;padding:11px 13px;border:1px solid #304255;border-radius:10px;background:#09121c;color:var(--text)}.field-row input{font-family:DM Mono,monospace}.field-row input:hover,.field-row select:hover,.shape-select:hover{border-color:#52778c}.shape-select{margin-bottom:22px}.field-hint{margin:-12px 0 18px;color:var(--muted);font-size:11px}.primary-button{display:flex;width:100%;min-height:50px;align-items:center;justify-content:center;gap:10px;border:1px solid #9cf4ef;border-radius:11px;background:linear-gradient(100deg,#8ff1e9,#65dfe9);color:#07141b;font-weight:800;cursor:pointer;transition:transform .18s ease,filter .18s ease}.primary-button:hover{transform:translateY(-1px);filter:brightness(1.06)}.primary-button:active{transform:translateY(0)}.reset-button{display:block;margin:12px auto 0;padding:6px 10px;border:0;background:transparent;color:var(--muted);font-size:12px;cursor:pointer}.reset-button:hover{color:var(--cyan)}.error-message{margin:14px 0 0;color:#ff9e9e;font-size:12px}.diagram-stage{display:grid;min-height:220px;place-items:center;padding:12px;border:1px solid rgba(145,164,183,.12);border-radius:13px;background:radial-gradient(ellipse at center,rgba(98,230,237,.07),transparent 65%),#09121b}.diagram-stage svg{width:100%;max-width:360px;height:auto}.result-label{margin:22px 0 6px;color:var(--muted);font-size:11px}.result-value{overflow-wrap:anywhere;color:var(--cyan);font:500 clamp(23px,3vw,34px) "DM Mono",monospace;letter-spacing:-.05em}.result-unit{color:#c5d4e1;font-size:12px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.result-mini{padding:14px;border:1px solid var(--line);border-radius:11px;background:#050c1473}.result-mini span{display:block;color:var(--muted);font-size:11px}.result-mini strong{display:block;margin-top:5px;font:13px DM Mono,monospace;overflow-wrap:anywhere}.formula{margin-top:18px;padding:14px;border-left:2px solid var(--cyan);background:var(--cyan-soft)}.formula span{display:block;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.1em}.formula code{display:block;margin-top:5px;color:#c9fbfa;font:12px DM Mono,monospace;white-space:normal}.content-section{padding:76px 0 24px}.section-kicker{color:var(--cyan);font:10px DM Mono,monospace;letter-spacing:.15em;text-transform:uppercase}.content-section h2{max-width:700px;margin:10px 0 14px;font-size:clamp(27px,4vw,40px);line-height:1.2;letter-spacing:-.045em}.content-section>p{max-width:740px;color:var(--muted);font-size:14px}.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:25px}.info-card{padding:21px;border:1px solid var(--line);border-radius:14px;background:#0e1722b3}.info-card .number{color:var(--cyan);font:11px DM Mono,monospace}.info-card h3{margin:13px 0 7px;font-size:15px}.info-card p{margin:0;color:var(--muted);font-size:12px}.equation{display:inline-block;margin-top:12px;color:#d9f8f8;font:12px DM Mono,monospace}.site-footer{margin-top:85px;padding:35px clamp(20px,5vw,76px);border-top:1px solid var(--line);text-align:center}.site-footer>p{color:var(--muted);font-size:12px}.site-footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:18px;margin:20px 0;color:#b7c6d4;font-size:12px}.footer-note{max-width:700px;margin:20px auto 0;font-size:10px!important}@media(max-width:760px){.site-header{min-height:66px;padding:0 18px}.header-nav{display:none}.header-cta{padding:9px 11px;font-size:11px}main{width:min(100% - 28px,560px)}.hero{padding-top:58px}.hero p{font-size:13px}.workspace{grid-template-columns:1fr}.panel-head,.panel-body{padding:19px}.info-grid{grid-template-columns:1fr}.content-section{padding-top:55px}.diagram-stage{min-height:190px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}