:root{--paper:#F4F6F8;--paper-2:#FFFFFF;--ink:#0E1422;--ink-2:#49526A;--ink-3:#79839A;--line:#E4E7EC;--accent:#0E7C6B;--accent-2:#12A88F;--glow:#16D6B4;--glow-soft:#D6F5EE;--price:#EF6A4C;--warn:#B7791F;--shadow:0 1px 2px rgba(14,20,34,.04), 0 12px 32px rgba(14,20,34,.06);--radius:18px;--sidebar:266px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:92px}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{background:var(--paper);color:var(--ink);font-family:IBM Plex Sans,system-ui,sans-serif;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}.wrap{max-width:1180px;margin:0 auto;padding:0 28px}h1,h2,h3{font-family:Space Grotesk,sans-serif;font-weight:600;letter-spacing:-.02em;line-height:1.1}.mono{font-family:IBM Plex Mono,monospace}.btn{display:inline-flex;align-items:center;gap:9px;font-family:Space Grotesk,sans-serif;font-weight:600;font-size:15.5px;letter-spacing:-.01em;padding:13px 22px;border-radius:12px;cursor:pointer;border:1px solid transparent;transition:transform .15s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}.btn-primary{background:var(--ink);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px #0e142238}.btn-primary .arr{transition:transform .2s ease}.btn-primary:hover .arr{transform:translate(3px)}header{position:sticky;top:0;z-index:40;background:#f4f6f8c7;backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}.brand{display:flex;align-items:center;gap:11px;font-family:Space Grotesk,sans-serif;font-weight:600;font-size:21px;letter-spacing:-.03em}.brand .x{color:var(--accent)}.nav-links{display:flex;align-items:center;gap:30px}.nav-links a{font-size:15px;color:var(--ink-2);transition:color .15s}.nav-links a:hover{color:var(--ink)}.nav-links a.on{color:var(--ink);font-weight:600}.nav-right{display:flex;align-items:center;gap:18px}.lang{font-family:IBM Plex Mono,monospace;font-size:13px;color:var(--ink-3);border:1px solid var(--line);border-radius:8px;padding:5px 10px;background:transparent;cursor:pointer;-webkit-appearance:none;appearance:none;transition:border-color .15s,color .15s}.lang:hover{color:var(--ink);border-color:var(--ink)}.menu-btn{display:none;background:transparent;border:1px solid var(--line);color:var(--ink);width:40px;height:40px;border-radius:10px;font-size:17px;cursor:pointer}.shell{display:grid;grid-template-columns:var(--sidebar) 1fr;gap:44px;max-width:1180px;margin:0 auto;padding:0 28px}nav.side{position:sticky;top:70px;align-self:start;height:calc(100vh - 70px);overflow-y:auto;padding:30px 6px 70px 0}nav.side .grp{margin-bottom:22px}nav.side .grp>.lbl{display:flex;align-items:center;gap:9px;font-family:IBM Plex Mono,monospace;font-size:11.5px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);margin:0 0 9px;padding:0 10px}nav.side .grp>.lbl .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);flex:none}nav.side a.item{display:block;padding:6px 12px;border-radius:9px;font-size:14.5px;color:var(--ink-2);transition:color .12s,background .12s}nav.side a.item:hover{color:var(--ink);background:var(--paper-2)}nav.side a.item.active{color:var(--ink);background:var(--paper-2);font-weight:600;box-shadow:inset 2px 0 0 var(--accent)}main.doc{padding:44px 0 110px;min-width:0}.doc .inner{max-width:760px}.crumb{font-family:IBM Plex Mono,monospace;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}.doc h1{font-size:40px;margin:0 0 16px}.doc .lede{font-size:19px;color:var(--ink-2);margin:0 0 10px;max-width:62ch}.doc h2{font-size:27px;margin:56px 0 8px;scroll-margin-top:92px}.doc h2 .rule{display:block;width:42px;height:3px;border-radius:3px;background:var(--accent);margin-top:12px}.doc h3{font-size:19.5px;margin:32px 0 6px}.doc p{margin:13px 0;max-width:70ch;color:var(--ink-2)}.doc strong{color:var(--ink);font-weight:600}.doc .muted{color:var(--ink-3);font-size:15px}ul.clean{list-style:none;margin:16px 0;max-width:70ch}ul.clean li{position:relative;padding:9px 0 9px 26px;border-bottom:1px solid var(--line);color:var(--ink-2)}ul.clean li:last-child{border-bottom:none}ul.clean li:before{content:"";position:absolute;left:3px;top:18px;width:7px;height:7px;border-radius:50%;background:var(--accent-2)}.note{display:flex;gap:14px;margin:24px 0;padding:17px 19px;background:var(--paper-2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:14px;box-shadow:var(--shadow)}.note.warn{border-left-color:var(--warn)}.note.teal{border-left-color:var(--glow)}.note .ic{font-size:18px;line-height:1.5;flex:none}.note h4{margin:0 0 4px;font-size:15px;font-family:Space Grotesk,sans-serif;font-weight:600;color:var(--ink)}.note p{margin:0;font-size:14.8px;color:var(--ink-2);max-width:none}ol.steps{list-style:none;counter-reset:s;margin:22px 0;max-width:70ch}ol.steps li{counter-increment:s;position:relative;padding:15px 0 15px 54px;border-bottom:1px solid var(--line)}ol.steps li:last-child{border-bottom:none}ol.steps li:before{content:counter(s);position:absolute;left:0;top:13px;width:33px;height:33px;border-radius:10px;background:var(--glow-soft);border:1px solid rgba(14,124,107,.2);color:var(--accent);font-family:Space Grotesk,sans-serif;font-weight:600;font-size:15px;display:flex;align-items:center;justify-content:center}ol.steps li b{color:var(--ink);display:block;margin-bottom:2px;font-family:Space Grotesk,sans-serif;font-weight:600}ol.steps li span{color:var(--ink-2);font-size:15px}.range{margin:24px 0;padding:22px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.range .bar{position:relative;height:46px;border-radius:11px;overflow:hidden;background:#eef1f4}.range .active{position:absolute;top:0;bottom:0;left:34%;width:32%;background:linear-gradient(180deg,#12a88f4d,#16d6b429);border-left:2px solid var(--accent);border-right:2px solid var(--glow)}.range .price{position:absolute;top:-4px;bottom:-4px;left:50%;width:2px;background:var(--price)}.range .price:after{content:attr(data-label);position:absolute;top:-19px;left:50%;transform:translate(-50%);font-family:IBM Plex Mono,monospace;font-size:11px;color:var(--price);white-space:nowrap}.range .labels{display:flex;justify-content:space-between;gap:10px;margin-top:11px;font-family:IBM Plex Mono,monospace;font-size:11.5px;color:var(--ink-3)}.range .cap{margin-top:13px;font-size:14.5px;color:var(--ink-2);max-width:none}.range .cap b{color:var(--accent)}.net{margin:28px 0;padding:24px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.net .eqn{display:flex;flex-wrap:wrap;align-items:stretch;gap:10px}.net .chip{flex:1 1 150px;min-width:150px;padding:14px;border-radius:12px;background:var(--paper);border:1px solid var(--line)}.net .chip .op{font-family:Space Grotesk,sans-serif;font-size:14px;font-weight:600}.net .chip .nm{display:block;margin-top:4px;font-size:13.5px;color:var(--ink-3)}.net .chip.plus{border-color:#0e7c6b4d}.net .chip.plus .op{color:var(--accent)}.net .chip.minus .op{color:var(--price)}.net .eq{display:flex;align-items:center;font-size:20px;color:var(--ink-3);font-weight:600}.net .chip.res{flex:1 1 100%;background:var(--glow-soft);border-color:#0e7c6b47}.net .chip.res .op{color:var(--accent);font-size:15.5px}.net .chip.res .nm{color:var(--ink-2)}.net .foot{margin:16px 0 0;font-size:14.5px;color:var(--ink-2);max-width:none}code,.addr{font-family:IBM Plex Mono,monospace;font-size:13px}.addr{display:inline-block;padding:3px 9px;background:var(--paper-2);border:1px solid var(--line);border-radius:7px;color:var(--accent);word-break:break-all}details.faq{border:1px solid var(--line);border-radius:13px;margin:10px 0;background:var(--paper-2);overflow:hidden}details.faq summary{list-style:none;cursor:pointer;padding:15px 19px;font-family:Space Grotesk,sans-serif;font-weight:600;font-size:16px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px}details.faq summary::-webkit-details-marker{display:none}details.faq summary:after{content:"+";color:var(--accent);font-size:21px;font-weight:400;line-height:1;flex:none}details.faq[open] summary:after{content:"–"}details.faq[open] summary{border-bottom:1px solid var(--line)}details.faq .a{padding:14px 19px 17px;color:var(--ink-2);font-size:15.5px}dl.gloss{margin:18px 0;max-width:70ch}dl.gloss dt{font-family:Space Grotesk,sans-serif;font-weight:600;color:var(--ink);margin-top:15px}dl.gloss dd{margin:3px 0 0;color:var(--ink-2);padding-bottom:13px;border-bottom:1px solid var(--line)}.finish{margin-top:60px;padding:34px 26px;text-align:center;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.finish h3{margin:0 0 9px;font-size:24px}.finish p{margin:0 auto 20px;color:var(--ink-2);max-width:52ch}footer.disc{max-width:760px;margin-top:44px;padding-top:22px;border-top:1px solid var(--line);color:var(--ink-3);font-size:13.5px;line-height:1.6}.scrim{display:none}@media (max-width:960px){.shell{grid-template-columns:1fr;gap:0}.nav-links{display:none}.menu-btn{display:inline-flex;align-items:center;justify-content:center}nav.side{position:fixed;top:70px;left:0;width:290px;z-index:35;background:var(--paper);border-right:1px solid var(--line);padding:24px 14px 70px 18px;transform:translate(-100%);transition:transform .22s ease}nav.side.open{transform:translate(0)}.scrim{display:block;position:fixed;inset:70px 0 0;background:#0e14226b;z-index:30;opacity:0;pointer-events:none;transition:opacity .2s}.scrim.show{opacity:1;pointer-events:auto}main.doc{padding:30px 0 80px}.doc h1{font-size:31px}@media (prefers-reduced-motion:reduce){nav.side{transition:none}}}@media (max-width:620px){.wrap{padding:0 16px}.nav{gap:10px}.menu-btn{flex:none;width:38px;height:38px}.brand{font-size:18px;gap:8px;min-width:0}.brand svg{flex:none}.nav-right{gap:10px;flex:none}.nav-right .btn{padding:10px 14px;font-size:14px}.lang{padding:5px 8px}}