:root{
  --bg:#f7f8f7; --panel:#ffffff; --ink:#16181d; --muted:#5b6470;
  --dark:#0d1117; --dark2:#161b22; --green:#16a34a; --green-b:#22c55e; --green-dim:#dcfce7;
  --line:#e5e9e4; --code:#0d1117; --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif;line-height:1.65;font-size:16.5px}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em}
h1{font-size:clamp(32px,4.5vw,48px);font-weight:800;margin:0 0 16px}
h2{font-size:26px;font-weight:800;margin:34px 0 12px}
h3{font-size:19px;font-weight:700;margin:24px 0 8px}
.hl{color:var(--green)}
.eyebrow{font-family:var(--mono);font-size:13px;color:var(--green);font-weight:600;margin-bottom:10px}
.cursor{display:inline-block;width:9px;height:16px;background:var(--green);margin-right:8px;vertical-align:-2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.lede{font-size:18px;color:var(--muted);max-width:720px;margin-bottom:8px}
.lede strong{color:var(--ink)}
.content p{margin:0 0 16px;color:#333a44}
.content ul{margin:0 0 18px 22px;color:#333a44}
.content li{margin-bottom:7px}
.content a{color:var(--green);font-weight:600}
.content code{font-family:var(--mono);font-size:.88em;background:#eef2ee;border:1px solid var(--line);border-radius:6px;padding:2px 7px;color:#14532d}
/* topbar */
.topbar{background:var(--dark);border-bottom:3px solid var(--green);position:sticky;top:0;z-index:50}
.bar{display:flex;align-items:center;gap:26px;padding:13px 24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand svg{width:36px;height:36px}
.brand-name{font-family:var(--mono);font-size:22px;font-weight:700;color:#f8fafc}
.brand-name em{font-style:normal;color:var(--green-b)}
.nav{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap}
.nav a{color:#c9d1d9;text-decoration:none;font-family:var(--mono);font-size:13.5px;padding:8px 12px;border-radius:6px}
.nav a:hover{background:var(--dark2);color:#fff}
.nav a.on{color:var(--green-b);background:rgba(34,197,94,.12)}
.btn-green{display:inline-flex;align-items:center;gap:9px;background:var(--green);color:#fff;font-weight:700;text-decoration:none;border:none;cursor:pointer;padding:13px 24px;border-radius:8px;font-size:15.5px;transition:background .15s,transform .12s;font-family:Inter,sans-serif}
.btn-green svg{width:18px;height:18px}
.btn-green:hover{background:#15803d;transform:translateY(-1px)}
.btn-green.sm{padding:9px 15px;font-size:13.5px;font-family:var(--mono)}
/* layout: content + RIGHT sidebar */
.layout{display:grid;grid-template-columns:1fr 300px;gap:36px;padding:44px 24px 64px;align-items:start}
.content{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:40px;min-width:0;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.content>h1:first-of-type,.content>.eyebrow:first-child{margin-top:0}
.side{position:sticky;top:86px;display:flex;flex-direction:column;gap:16px}
.side-card{background:var(--dark);border:1px solid #21262d;border-radius:12px;padding:20px;color:#c9d1d9}
.side-h{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--green-b);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green-b);display:inline-block}
.side-card ul{list-style:none}
.side-card li{margin-bottom:4px}
.side-card li a{display:flex;gap:8px;color:#c9d1d9;text-decoration:none;font-family:var(--mono);font-size:13.5px;padding:8px 10px;border-radius:6px}
.side-card li a:hover{background:var(--dark2);color:#fff}
.side-card li a.on{background:rgba(34,197,94,.14);color:var(--green-b)}
.prompt{color:var(--green-b);font-weight:700}
.side-card.tip p:last-child{font-size:13.5px;color:#8b949e;margin:0}
/* tabs */
.tabbar{display:flex;gap:6px;margin-bottom:26px;border-bottom:2px solid var(--line);padding-bottom:0}
.tabbar button{font-family:var(--mono);font-size:14px;font-weight:600;background:none;border:none;border-bottom:3px solid transparent;color:var(--muted);padding:10px 16px;cursor:pointer;margin-bottom:-2px}
.tabbar button.on{color:var(--green);border-bottom-color:var(--green)}
.tabpanel.hidden{display:none}
.codeblock{background:var(--code);color:#d6f5df;font-family:var(--mono);font-size:13.5px;line-height:1.6;padding:22px;border-radius:10px;overflow-x:auto;border:1px solid #21262d;white-space:pre}
.ex-list{list-style:none;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ex-list li{margin:0}
.ex-list code{display:block;font-family:var(--mono);font-size:13.5px;background:var(--dark);color:#d6f5df;border:1px solid #21262d;border-radius:8px;padding:12px 14px}
/* callout */
.callout{display:flex;gap:12px;background:var(--green-dim);border:1px solid #bbf7d0;border-left:5px solid var(--green);border-radius:10px;padding:16px 18px;margin:26px 0}
.callout svg{width:22px;height:22px;flex:none;color:var(--green);margin-top:2px}
.callout p{margin:0;color:#14532d;font-size:15px}
/* tool */
.tool{background:var(--dark);border:1px solid #21262d;border-radius:14px;overflow:hidden;margin:30px 0;box-shadow:0 12px 40px rgba(0,0,0,.18)}
.tool-bar{display:flex;align-items:center;gap:8px;background:var(--dark2);padding:12px 18px;border-bottom:1px solid #21262d}
.t-dot{width:11px;height:11px;border-radius:50%;background:#30363d}
.t-dot:first-child{background:#f85149}.t-dot:nth-child(2){background:#d29922}.t-dot:nth-child(3){background:var(--green-b)}
.tool-title{font-family:var(--mono);font-size:13px;color:#8b949e;margin-left:8px}
.privacy-chip{margin-left:auto;display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11.5px;color:var(--green-b);border:1px solid rgba(34,197,94,.45);border-radius:999px;padding:5px 12px;font-weight:600}
.privacy-chip svg{width:14px;height:14px}
.tool-body{padding:26px}
.tool-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:14px;margin-bottom:18px}
.field{display:flex;flex-direction:column;gap:7px;font-family:var(--mono);font-size:12px;color:#8b949e;text-transform:lowercase}
.field .opt{color:#6e7681;text-transform:none}
.field select,.field input{font-family:Inter,sans-serif;font-size:15px;font-weight:600;padding:11px 13px;border-radius:8px;border:1px solid #30363d;background:var(--dark2);color:#f0f6fc}
.field select:focus,.field input:focus{outline:2px solid var(--green);border-color:var(--green)}
.tool-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.btn-ghost{background:transparent;border:1px solid #30363d;color:#c9d1d9;font-weight:600;padding:11px 18px;border-radius:8px;cursor:pointer;font-size:14px;font-family:var(--mono)}
.btn-ghost:disabled{opacity:.4;cursor:not-allowed}
.btn-ghost:not(:disabled):hover{border-color:var(--green-b);color:#fff}
.count{font-family:var(--mono);font-size:13px;color:#8b949e}
.out-list{list-style:none;display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.out-list li{background:var(--dark2);border:1px solid #21262d;border-left:4px solid var(--green-b);border-radius:8px;padding:13px 15px;display:flex;align-items:center;gap:12px;color:#f0f6fc;font-size:15.5px;font-weight:500}
.out-list li .txt{flex:1;font-family:var(--mono);font-size:14.5px}
.copy-one{flex:none;background:none;border:1px solid #30363d;color:#8b949e;border-radius:6px;padding:6px 11px;cursor:pointer;font-family:var(--mono);font-size:12px}
.copy-one:hover{border-color:var(--green-b);color:#fff}
.out-empty{color:#6e7681!important;font-family:var(--mono);font-size:14px;border-left-color:#30363d!important}
.limits{background:rgba(34,197,94,.07);border:1px solid rgba(34,197,94,.3);border-radius:10px;padding:16px 18px}
.limits h3{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--green-b);margin:0 0 6px;font-family:var(--mono)}
.limits h3 svg{width:18px;height:18px}
.limits p{font-size:13.5px;color:#a7b0ba;margin:0}
/* cta / rel / faq */
.cta{margin:34px 0;background:var(--dark);border:1px solid #21262d;border-left:5px solid var(--green);border-radius:12px;padding:28px;color:#f0f6fc}
.cta h2{margin:0 0 8px;color:#fff}
.cta p{color:#a7b0ba;margin-bottom:18px}
.rel{margin-top:34px;background:#f2f6f2;border:1px solid var(--line);border-radius:10px;padding:22px}
.rel h2{font-family:var(--mono);font-size:14px;color:var(--green);margin:0 0 10px}
.rel ul{list-style:none;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px}
.rel a{font-size:14.5px}
.faq-list details{background:#fbfdfb;border:1px solid var(--line);border-radius:8px;margin-bottom:10px;padding:15px 17px}
.faq-list summary{font-weight:700;cursor:pointer;font-size:16px}
.faq-list p{margin:8px 0 0;color:#4b5563;font-size:15px}
/* footer */
.site-footer{background:var(--dark);border-top:3px solid var(--green);padding:44px 0 22px;color:#c9d1d9}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:30px}
.foot-brand{font-size:20px;margin-bottom:8px}
.foot-note{font-size:13.5px;color:#8b949e;max-width:360px}
.foot-h{font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:.12em;color:var(--green-b);margin-bottom:12px}
.site-footer nav a{display:block;color:#8b949e;text-decoration:none;font-size:13.5px;margin-bottom:8px;font-family:var(--mono)}
.site-footer nav a:hover{color:#fff}
.foot-base{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;border-top:1px solid #21262d;padding-top:18px;font-size:12.5px;color:#8b949e;font-family:var(--mono)}
.browser-chip{display:inline-flex;align-items:center;gap:7px;border:1px solid rgba(34,197,94,.45);color:var(--green-b);border-radius:999px;padding:5px 12px;font-weight:600;font-size:11.5px}
.browser-chip svg{width:14px;height:14px}
@media(max-width:960px){.layout{grid-template-columns:1fr}.side{position:static;order:2}.tool-grid{grid-template-columns:1fr 1fr}.bar{flex-wrap:wrap}.nav{order:3;width:100%}.foot-grid{grid-template-columns:1fr}.ex-list{grid-template-columns:1fr}.rel ul{grid-template-columns:1fr}.content{padding:26px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}