:root {
      --bg:#f7f8fa; --panel:#fff; --panel-2:#f0f3f7; --ink:#172033;
      --muted:#596579; --soft:#7c8798; --line:#e1e6ed; --accent:#2457d6;
      --accent-2:#dce7ff; --code:#101827; --code-ink:#e8eef8;
      --shadow:0 18px 55px rgba(23,32,51,.07); --header:rgba(247,248,250,.86);
      --radius:20px; --max:1120px;
    }
    [data-theme="dark"] {
      --bg:#0c1220; --panel:#121c2d; --panel-2:#182438; --ink:#edf2fa;
      --muted:#b4c0d2; --soft:#8998ad; --line:#29374c; --accent:#8db0ff;
      --accent-2:#1d3157; --code:#080e18; --code-ink:#e8eef8;
      --shadow:0 18px 55px rgba(0,0,0,.24); --header:rgba(12,18,32,.86);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:100px}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:"DM Sans",system-ui,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    button{font:inherit}
    ::selection{background:var(--accent-2)}
    .wrap{width:min(var(--max),calc(100% - 44px));margin-inline:auto}
    .mono{font-family:"DM Mono",monospace}
    .eyebrow{font:500 11px "DM Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
    .muted{color:var(--muted)}
    .topline{height:3px;background:var(--accent);width:0;position:fixed;z-index:100;inset:0 auto auto 0}
    header{position:sticky;top:0;z-index:50;background:var(--header);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
    .nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:12px;font:800 17px Manrope,sans-serif;letter-spacing:-.04em}
    .brand-mark{width:36px;height:36px;border-radius:11px;background:var(--ink);color:var(--bg);display:grid;place-items:center;font:500 13px "DM Mono",monospace}
    .brand span span{color:var(--accent)}
    .navlinks{display:flex;align-items:center;gap:26px;color:var(--muted);font-size:13px;font-weight:600}
    .navlinks a:hover,.textlink:hover{color:var(--accent)}
    .controls{display:flex;align-items:center;gap:8px}
    .control{border:1px solid var(--line);background:var(--panel);color:var(--muted);border-radius:10px;padding:7px 10px;font-size:12px;cursor:pointer}
    .control:hover,.control:focus-visible{border-color:var(--accent);color:var(--accent);outline:none}
    .hero{padding:88px 0 62px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(250px,.65fr);gap:56px;align-items:end}
    h1,h2,h3{font-family:Manrope,"DM Sans",sans-serif;letter-spacing:-.045em;line-height:1.12}
    h1{font-size:clamp(42px,6vw,72px);margin:18px 0 22px;max-width:780px;font-weight:800}
    h1 em{font-style:normal;color:var(--accent)}
    .hero-lead{font-size:18px;line-height:1.7;color:var(--muted);max-width:690px;margin:0}
    .hero-aside{border-left:1px solid var(--line);padding:5px 0 5px 24px}
    .hero-aside p{font-size:13px;color:var(--muted);margin:9px 0 0}
    .hero-aside .hero-sequence{font-size:11px;margin-top:22px;color:var(--soft)}
    .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
    .chip{font:11px "DM Mono",monospace;border:1px solid var(--line);padding:7px 10px;border-radius:999px;color:var(--muted);background:var(--panel)}
    .actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 16px;border-radius:11px;font-size:13px;font-weight:700;border:1px solid var(--line);background:var(--panel);cursor:pointer}
    .btn-primary{background:var(--accent);border-color:var(--accent);color:white}
    .btn:hover{transform:translateY(-1px)}
    .section{padding:48px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:22px}
    .section-head h2{font-size:clamp(25px,3vw,34px);margin:9px 0 0}
    .section-head p{max-width:470px;color:var(--muted);font-size:13px;margin:0}
    .feature{display:grid;grid-template-columns:1.1fr .9fr;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
    .feature-main{padding:36px}
    .meta{display:flex;flex-wrap:wrap;gap:12px;color:var(--soft);font:11px "DM Mono",monospace}
    .feature h3{font-size:clamp(25px,3.4vw,39px);margin:23px 0 15px}
    .feature p{color:var(--muted);font-size:15px;max-width:580px}
    .feature-side{background:var(--panel-2);padding:32px;display:flex;flex-direction:column;justify-content:space-between;gap:26px;border-left:1px solid var(--line)}
    .feature-side h4{font:700 12px "DM Mono",monospace;text-transform:uppercase;letter-spacing:.08em;margin:0 0 14px}
    .takeaways{list-style:none;padding:0;margin:0;display:grid;gap:13px}
    .takeaways li{display:flex;gap:11px;color:var(--muted);font-size:13px}
    .takeaways b{color:var(--accent);font-family:"DM Mono",monospace}
    .textlink{color:var(--accent);font-weight:700;font-size:13px}
    .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .topic{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--panel);min-height:190px}
    .topic .num{font:12px "DM Mono",monospace;color:var(--accent)}
    .topic h3{font-size:19px;margin:20px 0 10px}
    .topic p{font-size:13px;color:var(--muted);margin:0}
    .principles{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--line)}
    .principle{background:var(--panel);padding:22px}
    .principle strong{display:block;font:700 13px Manrope,sans-serif;margin-bottom:8px}
    .principle p{font-size:12px;color:var(--muted);margin:0}
    .about{display:grid;grid-template-columns:.7fr 1.3fr;gap:50px;padding:36px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
    .about h2{font-size:30px;margin:8px 0}
    .about p{color:var(--muted);font-size:14px;margin:0 0 13px}
    .about .profile-role{font-size:11px;color:var(--soft)}
    .stack{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
    .stack span{font:11px "DM Mono",monospace;background:var(--panel-2);border:1px solid var(--line);padding:6px 8px;border-radius:7px;color:var(--muted)}
    .article{margin-top:34px;padding:clamp(24px,5vw,54px);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
    .article h2{font-size:clamp(23px,3vw,31px);margin:42px 0 14px}
    .article h2.article-opening{margin-top:12px}
    .article h3{font-size:19px;margin:28px 0 10px}
    .article p,.article li{color:var(--muted);font-size:15px;line-height:1.8}
    .article ul{padding-left:22px}
    .article li{padding-left:5px;margin:7px 0}
    .article ol{padding-left:22px}
    .article figure{margin:24px 0}
    .article figure img{display:block;width:100%;height:auto;border-radius:12px}
    .article figcaption{margin-top:8px;color:var(--soft);font-size:12px}
    .article blockquote{margin:24px 0}
    .article blockquote p{margin:0;color:var(--ink);font-size:14px}
    .article blockquote footer{margin-top:10px;padding:0;border:0;font-size:12px}
    .article hr{border:0;border-top:1px solid var(--line);margin:30px 0}
    .article .table-wrap{overflow-x:auto;margin:24px 0}
    .article table{width:100%;border-collapse:collapse;font-size:13px}
    .article th,.article td{padding:10px 12px;border:1px solid var(--line);text-align:left;vertical-align:top}
    .article th{background:var(--panel-2);color:var(--ink)}
    .article td{color:var(--muted)}
    .article-card .textlink{display:inline-block;margin-top:14px}
    .article-load-error{padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--muted)}
    .callout{padding:18px 20px;background:var(--accent-2);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;margin:24px 0}
    .callout p{margin:0;color:var(--ink);font-size:14px}
    pre{overflow:auto;background:var(--code);color:var(--code-ink);padding:20px;border-radius:12px;font:12px/1.8 "DM Mono",monospace}
    code{font-family:"DM Mono",monospace;font-size:.9em}
    .footnote{font-size:12px!important;color:var(--soft)!important}
    footer{border-top:1px solid var(--line);padding:28px 0 40px;margin-top:70px;color:var(--soft);font-size:12px}
    .footer-row{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
    :focus-visible{outline:3px solid var(--accent);outline-offset:3px}
    @media(max-width:800px){
      .hero{grid-template-columns:1fr;gap:30px;padding-top:62px}
      .hero-aside{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}
      .feature{grid-template-columns:1fr}
      .feature-side{border-left:0;border-top:1px solid var(--line)}
      .grid3{grid-template-columns:1fr}
      .principles{grid-template-columns:repeat(2,1fr)}
      .about{grid-template-columns:1fr;gap:18px}
      .navlinks{display:none}
    }
    @media(max-width:480px){
      .wrap{width:min(100% - 30px,var(--max))}
      .nav{height:64px}
      .brand{font-size:15px}
      .brand-mark{width:32px;height:32px}
      .controls{gap:5px}
      .control{padding:7px 8px}
      .hero{padding:50px 0 40px}
      .hero-lead{font-size:16px}
      .feature-main,.feature-side{padding:23px}
      .principles{grid-template-columns:1fr}
      .section{padding:34px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
    }
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}