/* Layout: one calm column; hero thesis over the Focus list, a tabbed tour of the four views, a markdown band, then quiet facts. Details live on a second tab. */
:root{
  --bg:#f5f7fb; --surface:#ffffff; --ink:#0d1526; --muted:#56627a; --line:#dde3ee;
  --accent:#1d4ed8; --accent-soft:#e6edfd; --dot:#f59e0b; --on-accent:#fff; --on-dot:#1a1205;
  --urgent:#dc2626; --soon:#d97706; --upcoming:#2563eb; --later:#8a94a6; --contacts:#16a34a;
  --band:#0f1a33; --band-ink:#e7ecf7; --band-muted:#9aa8c4; --band-line:#22305a;
  --band-blue:#93b4ff; --band-amber:#fbbf24; --band-red:#f87171; --band-grey:#8e9bb6;
  --shadow:0 1px 2px rgb(13 21 38 / .06), 0 12px 40px -12px rgb(13 21 38 / .18);
  --scrim:rgb(6 10 21 / .78);
  --f-display:"Bricolage Grotesque", "Bricolage Grotesque Fallback", ui-sans-serif, system-ui, sans-serif;
  --f-body:"Hanken Grotesk", "Hanken Grotesk Fallback", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --wrap:1120px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0b1120; --surface:#121a2e; --ink:#e8edf7; --muted:#9aa6bd; --line:#24304a;
  --accent:#7aa2ff; --accent-soft:#1a2648; --dot:#fbbf24; --on-accent:#0b1120; --on-dot:#1a1205;
  --urgent:#f87171; --soon:#fbbf24; --upcoming:#7aa2ff; --later:#7c879c; --contacts:#4ade80;
  --band:#060a15; --band-ink:#e7ecf7; --band-muted:#8e9bb6; --band-line:#1c2747;
  --shadow:0 1px 2px rgb(0 0 0 / .3), 0 16px 40px -14px rgb(0 0 0 / .6);
  color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0b1120; --surface:#121a2e; --ink:#e8edf7; --muted:#9aa6bd; --line:#24304a;
  --accent:#7aa2ff; --accent-soft:#1a2648; --dot:#fbbf24; --on-accent:#0b1120; --on-dot:#1a1205;
  --urgent:#f87171; --soon:#fbbf24; --upcoming:#7aa2ff; --later:#7c879c; --contacts:#4ade80;
  --band:#060a15; --band-ink:#e7ecf7; --band-muted:#8e9bb6; --band-line:#1c2747;
  --shadow:0 1px 2px rgb(0 0 0 / .3), 0 16px 40px -14px rgb(0 0 0 / .6);
  color-scheme:dark;
}
/* Metric-matched fallbacks so text barely shifts when the web fonts swap in.
   Overrides are computed from each font's hhea/OS/2 metrics against Arial
   (the common local sans); see the font note in CLAUDE.md. */
@font-face{font-family:"Bricolage Grotesque Fallback";src:local("Arial");size-adjust:100.28%;ascent-override:92.74%;descent-override:26.92%;line-gap-override:0%}
@font-face{font-family:"Hanken Grotesk Fallback";src:local("Arial");size-adjust:95.07%;ascent-override:105.19%;descent-override:31.87%;line-gap-override:0%}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
img{max-width:100%;display:block}
code,kbd,pre{font-family:var(--f-mono);font-size:.86em}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:max(16px,4vw)}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;margin:0;letter-spacing:-.02em}
.eyebrow{font:500 12px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;color:var(--ink);text-decoration:none}
.wordmark{height:30px;width:auto}
#tidl .ink{stroke:var(--accent)}
#tidl .dot{fill:var(--dot)}
.tabs{display:flex;gap:4px;margin-left:auto;padding:4px;background:var(--surface);border:1px solid var(--line);border-radius:999px}
.tabs a{font:500 14px/1 var(--f-body);color:var(--muted);text-decoration:none;padding:9px 16px;border-radius:999px}
.tabs a[aria-current="page"]{background:var(--ink);color:var(--bg)}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px/1 var(--f-body);padding:13px 20px;border-radius:10px;text-decoration:none;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn:hover{filter:brightness(1.06)}
.top .btn{padding:10px 16px;font-size:14px}
.top .btn .btn-i{display:none;width:18px;height:18px}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;flex:none;padding:0;background:var(--surface);border:1px solid var(--line);border-radius:999px;color:var(--ink);cursor:pointer}
.theme-toggle:hover{filter:brightness(1.06)}
.theme-toggle svg{width:19px;height:19px}
.theme-toggle .i-sun{display:none}
.theme-toggle .i-moon{display:block}
:root[data-theme="dark"] .theme-toggle .i-sun{display:block}
:root[data-theme="dark"] .theme-toggle .i-moon{display:none}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .theme-toggle .i-sun{display:block}
  :root:not([data-theme="light"]) .theme-toggle .i-moon{display:none}
}
@media (max-width:640px){
  .top .wrap{gap:6px}
  .brand .wordmark{height:26px}
  .tabs{min-width:0;overflow-x:auto;scrollbar-width:none}
  .tabs::-webkit-scrollbar{display:none}
  .tabs a{padding:7px 8px;font-size:13px;white-space:nowrap}
  .theme-toggle{width:34px;height:34px}
  .top .btn{padding:0;width:36px;height:36px;justify-content:center;gap:0}
  .top .btn .btn-i{display:block}
  .top .btn .btn-txt{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
}

/* hero */
.hero{padding-block:72px 40px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;justify-items:start}
.hero h1{font-size:clamp(38px,5.8vw,68px);line-height:1.02;font-weight:800;max-width:16ch}
.hero h1 .hl{position:relative;white-space:nowrap;isolation:isolate}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:.08em;height:.12em;background:var(--dot);border-radius:4px;opacity:.85;z-index:-1}
.hero p.lede{font-size:clamp(18px,2vw,21px);color:var(--muted);max-width:56ch;margin:0}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.protocols{display:flex;flex-wrap:wrap;gap:8px 18px;margin:0;padding:0;list-style:none;font:500 13px/1 var(--f-mono);color:var(--muted)}
.protocols li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:2px}

.stage{position:relative;margin-top:48px}
.shot{border-radius:14px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--surface)}
.shot img{width:100%;height:auto;cursor:zoom-in}
.stage .shot.back{position:absolute;inset:-28px 8% auto auto;width:62%;opacity:.55;transform:rotate(1.2deg);filter:saturate(.7)}
.stage .shot.front{position:relative;width:88%}
.u{color:var(--urgent)}.s{color:var(--soon)}.up{color:var(--upcoming)}.l{color:var(--later)}
@media (max-width:720px){.stage .shot.back{display:none}.stage .shot.front{width:100%}}


/* sections */
section{padding-block:96px}
.sec-head{display:grid;gap:14px;max-width:60ch;margin-bottom:40px}
.sec-head h2{font-size:clamp(30px,4vw,46px);line-height:1.08;font-weight:700}
.sec-head p{margin:0;color:var(--muted)}

/* view tour */
.viewtabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.viewtabs button{font:600 15px/1 var(--f-body);color:var(--muted);background:transparent;border:1px solid var(--line);padding:11px 18px;border-radius:999px;cursor:pointer;display:inline-flex;align-items:center;gap:8px}
.viewtabs button i{width:8px;height:8px;border-radius:50%;background:var(--c)}
.viewtabs button[aria-selected="true"]{color:var(--ink);background:var(--surface);border-color:var(--ink)}
.view{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.9fr);gap:40px;align-items:start}
.view h3{font-size:26px;line-height:1.15;font-weight:700;margin-bottom:12px}
.view p{margin:0 0 18px;color:var(--muted)}
.view ul{margin:0;padding:0;list-style:none;display:grid;gap:12px}
.view li{padding-left:22px;position:relative;font-size:16px}
.view li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:2px;background:var(--accent)}
@media (max-width:860px){.view{grid-template-columns:minmax(0,1fr)}}

/* markdown band */
.band{background:var(--band);color:var(--band-ink)}
.band .sec-head p{color:var(--band-muted)}
.band .eyebrow{color:var(--band-muted)}
.md-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:28px;align-items:stretch}
.md-file,.md-out{border:1px solid var(--band-line);border-radius:14px;overflow:hidden;min-width:0}
.md-file header,.md-out header{display:flex;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--band-line);font:500 12.5px/1 var(--f-mono);color:var(--band-muted)}
.md-file pre{margin:0;padding:18px 16px;overflow-x:auto;font-size:14px;line-height:1.75;color:var(--band-ink)}
.md-file .tag{color:var(--band-blue)}.md-file .h{color:var(--band-amber)}.md-file .c{color:var(--band-muted)}
.md-out ol{list-style:none;margin:0;padding:8px}
.md-out li{display:grid;grid-template-columns:22px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 10px;border-radius:10px}
.md-out li+li{border-top:1px solid var(--band-line)}
.md-out .n{font:500 12px/1 var(--f-mono);color:var(--band-muted)}
.md-out .t{font-size:15px}
.md-out .t small{display:block;font:400 12px/1.4 var(--f-mono);color:var(--band-muted);margin-top:3px;overflow-wrap:anywhere}
.md-out b{font:600 10.5px/1 var(--f-mono);letter-spacing:.08em}
.md-out .u{color:var(--band-red)}.md-out .s{color:var(--band-amber)}.md-out .up{color:var(--band-blue)}.md-out .l{color:var(--band-grey)}
@media (max-width:860px){.md-grid{grid-template-columns:minmax(0,1fr)}}
.md-shot{margin:28px 0 0;display:grid;gap:12px}
.md-shot .shot{border-color:var(--band-line);background:var(--band)}
.md-shot figcaption{font-size:14px;color:var(--band-muted)}

/* facts */
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.fact h3{font-size:21px;line-height:1.2;font-weight:700;margin-bottom:8px}
.fact p{margin:0;color:var(--muted);font-size:16px}
.fact .k{font:500 13px/1 var(--f-mono);color:var(--accent);margin-bottom:14px;display:block}
.clients{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.clients span{font-size:13px;padding:5px 10px;border-radius:999px;background:var(--accent-soft);color:var(--ink)}
@media (max-width:860px){.facts{grid-template-columns:minmax(0,1fr);gap:32px}}

/* reading */
.back{margin:56px 0 0}
.back a{text-decoration:none;font-weight:600}
.books{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.book{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:start}
/* Book covers. The per-title --c from an inline style colours the spine shown
   behind the cover while it loads (or if the image is missing); one hue per book
   is decorative content, not a theme token, so it stays literal. */
.cover{display:block;width:78px;aspect-ratio:2/3;border-radius:3px 6px 6px 3px;background:var(--c);box-shadow:inset 5px 0 0 rgb(0 0 0 / .14);overflow:hidden}
.cover img{display:block;width:100%;height:100%;object-fit:cover}
.book h3{font-size:19px;line-height:1.25;font-weight:700;margin-bottom:2px}
.book .by{font:500 12.5px/1.4 var(--f-mono);color:var(--muted);margin:0 0 10px}
.book p{margin:0;color:var(--muted);font-size:15.5px}
@media (max-width:860px){.books{grid-template-columns:minmax(0,1fr);gap:28px}}

/* support */
.support{padding-block:24px 72px}
.support-card{display:flex;flex-wrap:wrap;gap:20px 32px;align-items:center;justify-content:space-between;padding:28px 32px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.support-card > div{display:grid;gap:6px;max-width:58ch;min-width:0}
.support-card h2{font-size:24px;line-height:1.2;font-weight:700}
.support-card p{margin:0;color:var(--muted);font-size:16px}
.support-card > img.avatar{width:72px;height:72px;border-radius:50%;flex:none}
.support-card > div{flex:1 1 320px}
.support-card p strong{color:var(--ink);font-weight:600}
.btn-kofi{background:var(--dot);color:var(--on-dot)}
.btn-kofi svg{width:18px;height:18px}
.closer{padding-block:80px 24px;border-top:1px solid var(--line)}
.closer .wrap{display:flex;flex-wrap:wrap;gap:24px;align-items:end;justify-content:space-between}
.closer h2{font-size:clamp(28px,3.6vw,40px);line-height:1.1;font-weight:700;max-width:24ch}
footer{border-top:1px solid var(--line);padding-block:28px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}
footer .wordmark{height:22px}

/* details */
.details{padding-block:56px 96px}
.d-head{max-width:62ch;margin-bottom:40px;display:grid;gap:14px}
.d-head h1{font-size:clamp(34px,4.6vw,54px);font-weight:800;line-height:1.05}
.d-head p{margin:0;color:var(--muted)}
.d-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:56px;align-items:start}
.d-nav{position:sticky;top:calc(env(safe-area-inset-top,0px) + 88px);display:grid;gap:2px}
.d-nav a{color:var(--muted);text-decoration:none;font-size:15px;padding:7px 12px;border-left:2px solid var(--line)}
.d-nav a:hover{color:var(--ink);border-left-color:var(--accent)}
.d-body{display:grid;gap:64px;min-width:0}
.d-sec{scroll-margin-top:96px;display:grid;gap:18px}
.d-sec h2{font-size:28px;line-height:1.15;font-weight:700;display:flex;align-items:baseline;gap:12px}
.d-sec h2 .eyebrow{font-size:11px}
.d-sec h3{font-size:18px;line-height:1.2;font-weight:700;margin-top:8px}
.d-sec > p{margin:0;color:var(--muted);max-width:66ch}
.d-sec > p.warn{color:var(--ink);background:var(--accent-soft);border-left:3px solid var(--soon);border-radius:8px;padding:14px 18px}
.d-sec > p.warn strong{color:var(--ink)}
dl.feat{margin:0;display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
dl.feat > div{display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px;padding:16px 0;border-bottom:1px solid var(--line)}
dl.feat dt{font-weight:600}
dl.feat dd{margin:0;color:var(--muted);font-size:16px;max-width:64ch}
dl.feat dd code,.d-sec p code{background:var(--accent-soft);color:var(--ink);padding:1px 6px;border-radius:5px}
@media (max-width:860px){.d-layout{grid-template-columns:minmax(0,1fr)}.d-nav{display:none}dl.feat > div{grid-template-columns:minmax(0,1fr);gap:4px}}
.codeblock{background:var(--band);color:var(--band-ink);border-radius:12px;overflow:hidden;min-width:0}
.codeblock header{padding:10px 16px;border-bottom:1px solid var(--band-line);font:500 12px/1 var(--f-mono);color:var(--band-muted);display:flex;justify-content:space-between;align-items:center}
.codeblock pre{margin:0;padding:16px;overflow-x:auto;font-size:14px;line-height:1.7}
.codeblock .c{color:var(--band-muted)}
.copy{font:500 12px/1 var(--f-mono);background:transparent;border:1px solid var(--band-line);color:var(--band-muted);padding:6px 10px;border-radius:6px;cursor:pointer}
.copy:hover{color:var(--band-ink)}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:720px){.two{grid-template-columns:minmax(0,1fr)}}
.figs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.figs figure{margin:0;display:grid;gap:8px}
.figs figcaption{font-size:14px;color:var(--muted)}
@media (max-width:720px){.figs{grid-template-columns:minmax(0,1fr)}}

/* markdown viewer demo (details) */
.mdv{display:grid;gap:14px}
.mdv-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.mdv-tabs{display:inline-flex;gap:4px;padding:4px;background:var(--surface);border:1px solid var(--line);border-radius:999px}
.mdv-tabs button{font:500 14px/1 var(--f-body);color:var(--muted);background:transparent;border:0;padding:9px 16px;border-radius:999px;cursor:pointer}
.mdv-tabs button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
.mdv-cap{margin:0;font-size:14px;color:var(--muted)}
.mdv-frame{display:grid}
.mdv-frame img{grid-area:1/1;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility 0s .25s}
.mdv-frame img.on{opacity:1;visibility:visible;transition:opacity .25s ease}
@media (prefers-reduced-motion:reduce){.mdv-frame img,.mdv-frame img.on{transition:none}}

/* lightbox */
dialog.lb{border:0;padding:0;background:transparent;max-width:min(1600px,96vw);max-height:94vh;overflow:visible}
dialog.lb::backdrop{background:var(--scrim)}
dialog.lb img{max-height:90vh;width:auto;border-radius:12px;cursor:zoom-out}
dialog.lb .lb-close{position:absolute;top:8px;right:8px;width:38px;height:38px;display:flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink);cursor:pointer;box-shadow:var(--shadow)}
dialog.lb .lb-close:hover{filter:brightness(1.06)}
dialog.lb .lb-close svg{width:18px;height:18px}

@media (prefers-reduced-motion:no-preference){
  .view{animation:rise .35s ease both}
  @keyframes rise{from{transform:translateY(6px)}to{transform:none}}
}

/* reading shelf */
.shelf{display:grid;gap:56px}
.shelf-group h2{font-size:22px;line-height:1.2;font-weight:700;padding-bottom:14px;border-bottom:1px solid var(--line)}
.books-list{grid-template-columns:minmax(0,1fr);gap:0}
.books-list .book{grid-template-columns:auto minmax(0,1fr);gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.books-list .book > div{max-width:62ch}
@media (max-width:860px){.books-list .book{grid-template-columns:auto minmax(0,1fr);gap:8px 18px}}

/* philosophy essay */
.essay{max-width:64ch;display:grid;gap:18px}
.essay p{margin:0;font-size:17.5px}
.essay h2{font-size:23px;line-height:1.2;font-weight:700;margin-top:14px}
.essay code{background:var(--accent-soft);color:var(--ink);padding:1px 6px;border-radius:5px}
.essay kbd{background:var(--accent-soft);color:var(--ink);padding:1px 6px;border-radius:5px;font-size:.82em}