:root{--bg:#0a0e0d;--bg-soft:#111816;--panel:#141d1a;--panel-line:#1f2c28;--ink:#eaf3ef;--ink-soft:#9fb3ac;--ink-faint:#5e726b;--volt:#2dffc3;--volt-dim:#15c79a;--amber:#ffd166}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:Inter,system-ui,sans-serif;line-height:1.6;overflow-x:hidden}.wrap{max-width:1080px;margin:0 auto;padding:0 24px}.wrap-narrow{max-width:760px;margin:0 auto;padding:0 24px}a{color:inherit;text-decoration:none}h1,h2,h3{letter-spacing:-.02em;font-family:Space Grotesk,sans-serif;font-weight:600;line-height:1.1}.mono{font-family:JetBrains Mono,monospace}header{z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--panel-line);background:#0a0e0dd1;position:sticky;top:0}.nav{justify-content:space-between;align-items:center;gap:16px;height:64px;display:flex}.brand{letter-spacing:-.01em;white-space:nowrap;align-items:center;gap:10px;font-family:Space Grotesk;font-size:18px;font-weight:700;display:flex}.brand .spark{background:radial-gradient(circle at 30% 30%,var(--volt),var(--volt-dim));color:#04130e;border-radius:7px;place-items:center;width:26px;height:26px;font-weight:700;display:grid;box-shadow:0 0 18px #2dffc373}.brand b{color:var(--volt)}.nav-right{align-items:center;gap:24px;display:flex}.nav-links{color:var(--ink-soft);gap:24px;font-size:14px;display:flex}.nav-links a:hover{color:var(--volt)}.lang-switch{border:1px solid var(--panel-line);background:#0a100e;border-radius:9px;gap:4px;padding:3px;display:flex}.lang-switch a{color:var(--ink-faint);border-radius:6px;padding:5px 9px;font-family:JetBrains Mono;font-size:12px;font-weight:700}.lang-switch a.active{background:var(--volt);color:#04130e}.lang-switch a:not(.active):hover{color:var(--volt)}@media (width<=720px){.nav-links{display:none}}.hero{padding:60px 0 40px;position:relative}.hero:before{content:"";z-index:-1;background:radial-gradient(60% 50% at 80% 0,#2dffc31a,#0000 70%),radial-gradient(50% 40% at 10% 20%,#2dffc30d,#0000 70%);position:absolute;inset:0}.eyebrow{letter-spacing:.12em;text-transform:uppercase;color:var(--volt);border:1px solid var(--panel-line);border-radius:100px;align-items:center;gap:8px;margin-bottom:22px;padding:6px 12px;font-family:JetBrains Mono;font-size:12px;display:inline-flex}.eyebrow .dot{background:var(--volt);width:7px;height:7px;box-shadow:0 0 8px var(--volt);border-radius:50%;animation:2s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.35}}.hero h1{max-width:16ch;font-size:clamp(34px,5.2vw,56px)}.hero h1 em{color:var(--volt);font-style:normal}.hero p.lede{max-width:54ch;color:var(--ink-soft);margin-top:18px;font-size:18px}.converter{background:linear-gradient(180deg,var(--panel),var(--bg-soft));border:1px solid var(--panel-line);border-radius:20px;margin-top:40px;padding:28px;box-shadow:0 30px 80px -40px #000000e6,inset 0 1px #ffffff08}.conv-top{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px;display:flex}.field{flex:1;min-width:220px}.field label{letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:10px;font-family:JetBrains Mono;font-size:12px;display:block}.input-row{gap:12px;display:flex}.input-row input{border:1px solid var(--panel-line);color:var(--ink);background:#0a100e;border-radius:12px;outline:none;flex:1;width:100%;padding:14px 16px;font-family:JetBrains Mono;font-size:30px;font-weight:700;transition:all .15s}.input-row input:focus{border-color:var(--volt);box-shadow:0 0 0 3px #2dffc326}.seg{border:1px solid var(--panel-line);background:#0a100e;border-radius:12px;flex-wrap:wrap;gap:2px;padding:4px;display:inline-flex}.seg button{color:var(--ink-soft);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:10px 14px;font-family:JetBrains Mono;font-size:13px;font-weight:700;transition:all .15s}.seg button.active{background:var(--volt);color:#04130e}.seg button:not(.active):hover{color:var(--volt)}.unit-toggle{color:var(--ink-faint);align-items:center;gap:8px;margin-top:14px;font-family:JetBrains Mono;font-size:13px;display:flex}.unit-toggle button{color:var(--ink-faint);cursor:pointer;background:0 0;border:0;border-radius:6px;padding:2px 6px;font-family:inherit}.unit-toggle button.on{color:var(--volt);background:#2dffc31a}.results{grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px;display:grid}@media (width<=680px){.results{grid-template-columns:repeat(2,1fr)}}.rcard{border:1px solid var(--panel-line);background:#0c1311;border-radius:14px;padding:18px 16px;transition:all .2s;position:relative;overflow:hidden}.rcard.source{border-color:var(--volt-dim);background:linear-gradient(#2dffc312,#0c1311)}.rcard .std{letter-spacing:.1em;color:var(--ink-faint);font-family:JetBrains Mono;font-size:12px}.rcard.source .std{color:var(--volt)}.rcard .val{margin-top:6px;font-family:Space Grotesk;font-size:34px;font-weight:700;line-height:1}.rcard .u{color:var(--ink-faint);margin-left:4px;font-family:JetBrains Mono;font-size:13px}.rcard .tag{color:var(--ink-faint);margin-top:8px;font-size:11px}.rcard.source .tag{color:var(--volt-dim)}section.block{border-top:1px solid var(--panel-line);padding:80px 0}.sec-eyebrow{letter-spacing:.16em;text-transform:uppercase;color:var(--volt-dim);font-family:JetBrains Mono;font-size:12px}.sec-title{max-width:22ch;margin-top:14px;font-size:clamp(26px,3.6vw,38px)}.sec-intro{color:var(--ink-soft);max-width:64ch;margin-top:16px;font-size:17px}.feat-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px;display:grid}@media (width<=820px){.feat-grid{grid-template-columns:1fr}}.feat{background:var(--panel);border:1px solid var(--panel-line);border-radius:16px;padding:26px}.feat .ic{width:40px;height:40px;color:var(--volt);background:#2dffc31a;border-radius:10px;place-items:center;margin-bottom:16px;font-size:18px;display:grid}.feat h3{font-size:19px}.feat p{color:var(--ink-soft);margin-top:8px;font-size:15px}.std-grid{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:48px;display:grid}@media (width<=680px){.std-grid{grid-template-columns:1fr}}.std-card{background:var(--panel);border:1px solid var(--panel-line);border-radius:16px;padding:26px}.std-card h3{flex-wrap:wrap;align-items:center;gap:10px;font-size:20px;display:flex}.std-card h3 .badge{color:var(--volt);background:#2dffc31f;border-radius:6px;padding:3px 8px;font-family:JetBrains Mono;font-size:11px}.std-card .region{color:var(--ink-faint);margin-top:2px;font-family:JetBrains Mono;font-size:12px}.std-card p{color:var(--ink-soft);margin-top:12px;font-size:15px}.std-card .formula{color:var(--volt-dim);border:1px solid var(--panel-line);background:#0a100e;border-radius:8px;margin-top:14px;padding:8px 12px;font-family:JetBrains Mono;font-size:13px}.steps{flex-direction:column;gap:2px;margin-top:48px;display:flex}.step{border-top:1px solid var(--panel-line);gap:24px;padding:24px 0;display:flex}.step:first-child{border-top:0}.step .n{color:var(--volt);border:1px solid var(--volt-dim);border-radius:8px;flex-shrink:0;place-items:center;width:38px;height:38px;font-family:JetBrains Mono;font-size:14px;font-weight:700;display:grid}.step h3{font-size:18px}.step p{color:var(--ink-soft);margin-top:6px;font-size:15px}.why-grid{grid-template-columns:1.1fr 1fr;align-items:center;gap:48px;margin-top:48px;display:grid}@media (width<=820px){.why-grid{grid-template-columns:1fr;gap:32px}}.why-list{flex-direction:column;gap:18px;list-style:none;display:flex}.why-list li{color:var(--ink-soft);gap:14px;font-size:16px;display:flex}.why-list .ck{color:var(--volt);flex-shrink:0;margin-top:3px}.why-list strong{color:var(--ink);font-weight:600}.why-viz{background:var(--panel);border:1px solid var(--panel-line);border-radius:16px;padding:28px}.bar-row{align-items:center;gap:14px;margin-bottom:18px;display:flex}.bar-row:last-child{margin-bottom:0}.bar-row .lbl{width:54px;color:var(--ink-soft);font-family:JetBrains Mono;font-size:13px}.bar-track{background:#0a100e;border-radius:8px;flex:1;height:14px;overflow:hidden}.bar-fill{background:linear-gradient(90deg,var(--volt-dim),var(--volt));border-radius:8px;height:100%}.bar-row .num{text-align:right;width:60px;color:var(--ink);font-family:JetBrains Mono;font-size:13px}.blog-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px;display:grid}@media (width<=820px){.blog-grid{grid-template-columns:1fr}}.bcard{background:var(--panel);border:1px solid var(--panel-line);border-radius:16px;flex-direction:column;padding:26px;transition:all .2s;display:flex}.bcard:hover{border-color:var(--volt-dim);transform:translateY(-2px)}.bcard .date{color:var(--ink-faint);font-family:JetBrains Mono;font-size:12px}.bcard h3{margin-top:10px;font-size:18px;line-height:1.25}.bcard .more{color:var(--volt);margin-top:auto;padding-top:16px;font-family:JetBrains Mono;font-size:13px}.faq{border-top:1px solid var(--panel-line);margin-top:48px}.faq details{border-bottom:1px solid var(--panel-line)}.faq summary{cursor:pointer;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;font-family:Space Grotesk;font-size:18px;font-weight:600;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary .plus{color:var(--volt);flex-shrink:0;font-size:22px;transition:all .2s}.faq details[open] summary .plus{transform:rotate(45deg)}.faq .ans{color:var(--ink-soft);max-width:72ch;padding:0 0 22px;font-size:15px}footer{border-top:1px solid var(--panel-line);background:var(--bg-soft);padding:54px 0 40px}.foot-top{flex-wrap:wrap;justify-content:space-between;gap:32px;display:flex}.foot-brand{max-width:34ch}.foot-brand p{color:var(--ink-soft);margin-top:12px;font-size:14px}.foot-cols{flex-wrap:wrap;gap:64px;display:flex}.foot-col h4{letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:14px;font-family:JetBrains Mono;font-size:12px}.foot-col a{color:var(--ink-soft);margin-bottom:10px;font-size:14px;display:block}.foot-col a:hover{color:var(--volt)}.foot-bottom{border-top:1px solid var(--panel-line);color:var(--ink-faint);flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:44px;padding-top:24px;font-size:13px;display:flex}.article{padding:56px 0 80px}.article .back{color:var(--volt-dim);font-family:JetBrains Mono;font-size:13px}.article .back:hover{color:var(--volt)}.article h1{max-width:24ch;margin-top:24px;font-size:clamp(28px,4vw,42px)}.article .meta{color:var(--ink-faint);margin-top:16px;font-family:JetBrains Mono;font-size:13px}.article .content{margin-top:36px}.article .content p{color:var(--ink-soft);margin-bottom:22px;font-size:17px}.article .content h2{margin:40px 0 16px;font-size:24px}.cta-box{background:linear-gradient(180deg,var(--panel),var(--bg-soft));border:1px solid var(--volt-dim);border-radius:16px;margin-top:48px;padding:28px}.cta-box h3{font-size:20px}.cta-box p{color:var(--ink-soft);margin-top:8px;font-size:15px}.cta-box a{background:var(--volt);color:#04130e;border-radius:10px;margin-top:18px;padding:12px 22px;font-family:Space Grotesk;font-size:15px;font-weight:700;display:inline-block}.cta-box a:hover{background:#fff}.blog-index{padding:56px 0 80px}.blog-index .back{color:var(--volt-dim);font-family:JetBrains Mono;font-size:13px}.blog-index h1{margin-top:20px;font-size:clamp(30px,4.5vw,44px)}.blog-index .lead{color:var(--ink-soft);max-width:60ch;margin-top:14px;font-size:17px}.blog-index .list{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:44px;display:grid}@media (width<=680px){.blog-index .list{grid-template-columns:1fr}}:focus-visible{outline:2px solid var(--volt);outline-offset:3px;border-radius:6px}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}