/* fonts: self-hosted, latin subset (SIL OFL 1.1, see fonts/OFL-*.txt) */
@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url(fonts/inter-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url(fonts/inter-latin-500-normal.woff2) format('woff2')}
@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url(fonts/inter-latin-600-normal.woff2) format('woff2')}
@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url(fonts/inter-latin-700-normal.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/jetbrains-mono-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/jetbrains-mono-latin-500-normal.woff2) format('woff2')}
:root{--bg:#f8f9fb;--fg:#1a1e26;--muted:#545c6a;--line:#d0d6e0;--card:#fff;--accent:#2b66bf;--accent-fg:#fff;--warn:#b7791f;--code:#edf1f7;--chip:#eaeff7;--ok:#1d7f55;--ok-bg:#e1f3ea;--warn-bg:#fbf0dc;--danger:#c4372c;--danger-bg:#fbe6e3;--add-bg:#e3f5ea;--del-bg:#fbe7e5;--shadow:rgb(20 30 50/.18);--desk:linear-gradient(135deg,#c4d9f5,#dcd6f2 60%,#f3e3c4)}
@media (prefers-color-scheme:dark){:root{--bg:#0e131b;--fg:#e7ebf2;--muted:#a1abbb;--line:#2e3644;--card:#161c26;--accent:#7fb2f2;--accent-fg:#0b1220;--warn:#e0a84a;--code:#1c2330;--chip:#222a37;--ok:#5fd09a;--ok-bg:#183326;--warn-bg:#3a2c14;--danger:#f08a80;--danger-bg:#3d1c19;--add-bg:#163323;--del-bg:#3a1b19;--shadow:rgb(0 0 0/.55);--desk:linear-gradient(135deg,#1d4a8f,#2a2a5a 60%,#4a3a14)}}
*{box-sizing:border-box}
html{scroll-padding-top:72px;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 Inter,system-ui,sans-serif}
.wrap{max-width:68rem;margin:0 auto;padding:0 1rem}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--card);padding:8px;z-index:30}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;height:60px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--fg);text-decoration:none}
nav{display:flex;align-items:center;gap:20px}nav a{color:var(--muted);text-decoration:none}nav a:hover{color:var(--fg)}
.gh{display:flex}.gh svg{width:20px;height:20px;fill:currentColor}
.lang{display:flex;gap:2px;padding:2px;border:1px solid var(--line);border-radius:8px;background:var(--card)}.lang button{font:inherit;font-size:12px;font-weight:600;padding:1px 8px;border:0;border-radius:6px;background:none;color:var(--muted);cursor:pointer}.lang button[aria-pressed=true]{background:var(--accent);color:var(--accent-fg)}
.nav-dl{min-height:0;padding:6px 14px;font-size:14px}
@media(max-width:640px){nav{gap:12px}nav .nl,nav .gh{display:none}}
@media(max-width:360px){nav .nav-dl{display:none}}
/* type, sections */
h1{font-size:clamp(2rem,1.4rem + 2.6vw,3.25rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 1rem;text-wrap:balance}
h2{font-size:clamp(1.5rem,1.2rem + 1.2vw,2rem);line-height:1.2;margin:0 0 1rem;text-wrap:balance}
h3{font-size:1.125rem;line-height:1.3;margin:0 0 .5rem}
p{margin:0 0 1rem}
.accent{color:var(--accent)}.muted{color:var(--muted)}
.lead{max-width:42rem;font-size:1.0625rem;color:var(--muted);margin-bottom:2rem}#privacy .lead{margin-bottom:1rem}
section{padding:clamp(3rem,2rem + 4vw,5rem) 0}section+section{border-top:1px solid var(--line)}
.alt{background:color-mix(in srgb,var(--chip) 60%,var(--bg))}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:2.75rem;padding:.5rem 1.125rem;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);text-decoration:none;font-weight:600;text-align:center}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
.btn svg{flex:none;width:20px;height:20px;fill:currentColor}
/* hero */
.hero{display:grid;gap:2.5rem;align-items:center}
@media(min-width:64rem){.hero{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.hero .lead{font-size:1.1875rem;margin-bottom:1.5rem}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:1rem}
.meta{margin:0;font-size:14px;color:var(--muted)}
.shot{margin:0;min-width:0}.shot figcaption{margin-top:.75rem;font-size:14px;color:var(--muted)}
/* features */
.more{margin:2.5rem 0 .75rem}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0 0 1.5rem;padding:0}
.chips li{padding:4px 12px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:14px}
.kb{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin:0;color:var(--muted)}
kbd{display:inline-block;min-width:26px;text-align:center;padding:2px 7px;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;background:var(--card);color:var(--fg);font:13px 'JetBrains Mono',monospace}
/* download */
.dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,17rem),1fr));gap:1rem}
.dl{display:flex;flex-direction:column;gap:10px;padding:1.25rem;border:1px solid var(--line);border-radius:.75rem;background:var(--card)}
.dl.on{border:2px solid var(--accent);padding:calc(1.25rem - 1px)}
.dl h3{display:flex;align-items:center;gap:8px;margin:0}.dl h3 svg{width:22px;height:22px;fill:currentColor}
.dl small{color:var(--muted);font-size:13px}
.dl-note{margin:1.5rem 0 0}
code{font:13px/1.5 'JetBrains Mono',monospace}
.code{display:flex;gap:8px;align-items:center;margin-top:auto;padding:8px;border-radius:8px;background:var(--code)}.code code{flex:1;min-width:0;font-size:12px;overflow-wrap:anywhere}
.copy{font:inherit;font-size:13px;padding:4px 10px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--fg);cursor:pointer}
/* vs */
.vs-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:.75rem;background:var(--card)}
.vs{width:100%;border-collapse:collapse}
.vs th,.vs td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}.vs tbody tr:last-child>*{border-bottom:0}
.vs thead th{white-space:nowrap}.vs tbody th{font-weight:500}.vs td{color:var(--muted)}.vs td.y{color:var(--ok);font-weight:700}
@media(max-width:520px){.vs{font-size:.9rem}.vs th,.vs td{padding:10px}}
/* faq */
.faq{max-width:48rem}
.faq details{margin:0 0 8px;border:1px solid var(--line);border-radius:.75rem;background:var(--card)}
.faq summary{padding:12px 16px;font-weight:600;cursor:pointer}.faq summary:focus-visible{outline-offset:-3px;border-radius:.75rem}
.faq details p{margin:0;padding:0 16px 12px;color:var(--muted)}
/* footer */
.foot{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.foot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 20px;padding-top:2rem;padding-bottom:2rem}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 20px}
/* Hero mock: menu bar + ChargeKeeper popover (static) */
:root{--flow-a:color-mix(in srgb,#3d7fd6 22%,transparent);--dash:rgb(255 255 255/.45)}
.desk{border:1px solid var(--line);border-radius:.75rem;background:var(--desk);box-shadow:0 24px 60px -24px var(--shadow);overflow:hidden;padding-bottom:28px}
.menubar{display:flex;justify-content:flex-end;align-items:center;gap:14px;height:28px;padding:0 14px;background:color-mix(in srgb,var(--card) 70%,transparent);backdrop-filter:blur(10px);font:500 13px -apple-system,system-ui,sans-serif}
.mb-ic{display:flex;width:18px;height:18px;padding:1px;border-radius:4px;background:color-mix(in srgb,var(--fg) 14%,transparent)}.mb-ic svg{width:100%;height:100%}
.pop{width:min(320px,calc(100% - 24px));margin:6px 12px 0 auto;padding:14px 16px;display:flex;flex-direction:column;gap:10px;border:1px solid var(--line);border-radius:12px;background:var(--card);box-shadow:0 18px 40px -18px var(--shadow);font-size:13px}
.p-head{display:flex;align-items:baseline;gap:10px}.p-head .pct{font-size:30px;font-weight:600;letter-spacing:-.01em}.p-head div{display:flex;flex-direction:column}.p-head small{color:var(--muted);font-size:11px}
.p-row{display:flex;justify-content:space-between}.mono{font-family:'JetBrains Mono',monospace}
.slider{position:relative;height:4px;border-radius:2px;background:var(--chip)}.slider i{position:absolute;inset:0 calc(100% - var(--v)) 0 0;border-radius:2px;background:var(--accent)}.slider i::after{content:'';position:absolute;right:-8px;top:-6px;width:16px;height:16px;border-radius:50%;background:var(--card);border:1px solid var(--line);box-shadow:0 1px 3px var(--shadow)}
.p-btns{display:flex;flex-wrap:wrap;gap:6px}.pb{padding:3px 10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);font-size:12px}
.flow{width:100%;height:auto}.flow text{fill:var(--fg);font:11px 'JetBrains Mono',monospace}
.flow .dash{fill:none;stroke:var(--dash);stroke-width:1.5;stroke-dasharray:8 10;animation:flow .75s linear infinite}
@keyframes flow{to{stroke-dashoffset:-18}}
@media (prefers-reduced-motion:reduce){.flow .dash{animation:none}}
/* Feature cards */
.feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:1rem}
.feat article{padding:1.125rem 1.25rem;border:1px solid var(--line);border-radius:.75rem;background:var(--card)}
.feat p{margin:0;color:var(--muted)}