/* Layout: one quiet column of ~68ch running text, with a wider 1120px stage for the hero, the chapter grid and the gallery. */
:root{
  --paper:#f0f8ff;--paper-2:#ffffff;--ink:#101519;--ink-2:#46535d;--ink-3:#7a8792;--line:#d9e6f1;--accent:#d9692a;--accent-deep:#b5531d;--accent-2:#d9692a;--hero-bg:#1a1d21;--hero-fg:#ffffff;--hero-accent:#f08a45;--hero-btn-fg:#1a1d21;
  --display:"Instrument Sans", "Segoe UI", system-ui, sans-serif;
  --body:"Instrument Sans", "Segoe UI", system-ui, sans-serif;
  --mono:"DM Mono", ui-monospace, Menlo, monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){ --paper:#131619;--paper-2:#1b1f24;--ink:#eef0f2;--ink-2:#b4bbc3;--ink-3:#7f8790;--line:#2a3036;--accent:#f08a45;--accent-deep:#f5a874;--accent-2:#f08a45;--hero-bg:#0c0f12;--hero-fg:#ffffff;--hero-accent:#f08a45;--hero-btn-fg:#0c0f12; color-scheme:dark; }
}
:root[data-theme="dark"]{ --paper:#131619;--paper-2:#1b1f24;--ink:#eef0f2;--ink-2:#b4bbc3;--ink-3:#7f8790;--line:#2a3036;--accent:#f08a45;--accent-deep:#f5a874;--accent-2:#f08a45;--hero-bg:#0c0f12;--hero-fg:#ffffff;--hero-accent:#f08a45;--hero-btn-fg:#0c0f12; color-scheme:dark; }
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:2px}
h1,h2,h3{font-family:var(--display);font-weight:400;line-height:1.1;margin:0;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:clamp(1.9rem,3.2vw,2.5rem)}
h3{font-size:1.35rem}
p{margin:0}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.prose{max-width:68ch}
.eyebrow{font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600}
.muted{color:var(--ink-2)}
section{padding-block:clamp(4rem,8vw,7rem)}

/* nav */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--paper)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:64px}
.brand{font-family:var(--display);font-size:1.05rem;line-height:1.05;color:var(--ink);white-space:nowrap;font-weight:700;letter-spacing:-.03em;display:flex;flex-direction:column}
.brand em{font-style:normal;color:var(--accent)}
.brand span{font-weight:500;letter-spacing:-.02em}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:1.6rem}
.nav li a{color:var(--ink-2);font-size:.95rem;font-weight:500}
.nav li a:hover{color:var(--ink);text-decoration:none}
.nav .buy{color:var(--accent-2);font-weight:600}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:.4rem .7rem;color:var(--ink);font:inherit;font-size:.9rem;cursor:pointer}
@media (max-width:760px){
  .nav ul{display:none;position:absolute;left:0;right:0;top:64px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:.5rem max(16px,env(safe-area-inset-left,0px))}
  .nav ul.open{display:flex}
  .nav li a{display:block;padding:.75rem 0;border-top:1px solid var(--line)}
  .menu-btn{display:inline-block}
}

/* hero */
.hero{padding-block:clamp(3rem,7vw,6rem) clamp(3rem,6vw,5rem)}
.hero .wrap{display:grid;grid-template-columns:1.25fr .85fr;gap:clamp(2rem,6vw,5rem);align-items:center}
.hero .wrap>*,.two>*,.author .wrap>*,.contact .wrap>*,.framework .wrap>*{min-width:0}
.hero h1{font-size:clamp(2.4rem,5.2vw,4.2rem);font-weight:300;max-width:12ch}
.hero h1 strong{font-weight:500;color:var(--accent-deep)}
.hero .sub{margin-top:1.75rem;padding-top:1.25rem;border-top:1px solid rgba(255,255,255,.15);max-width:40ch;line-height:1.35;display:grid;gap:.35rem}
.hero .sub .title{font-family:var(--display);font-size:clamp(1.15rem,1.8vw,1.4rem);font-weight:600;letter-spacing:-.02em;color:#fff}
.hero .sub .subtitle{font-size:.95rem;color:rgba(255,255,255,.65)}
.hero .by{margin-top:1.5rem;color:var(--ink-2)}
.hero .by b{color:var(--ink);font-weight:600}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;border-radius:4px;font-weight:600;font-size:.95rem;border:1px solid var(--accent);color:var(--accent);transition:background .15s,color .15s}
.btn:hover{background:var(--accent);color:var(--paper);text-decoration:none}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.primary:hover{background:var(--accent-deep);border-color:var(--accent-deep)}
.btn.ghost{border-color:var(--line);color:var(--ink-2)}
.btn.ghost:hover{background:var(--paper-2);color:var(--ink)}
.cover{justify-self:center;width:min(100%,340px);position:relative}
.cover img{border-radius:3px;box-shadow:0 30px 60px -20px rgba(20,40,45,.45),0 2px 6px rgba(20,40,45,.15)}
.cover::after{content:"";position:absolute;inset:0;border-radius:3px;box-shadow:inset 3px 0 6px -3px rgba(255,255,255,.35);pointer-events:none}
.pub{margin-top:1rem;text-align:center;font-size:.85rem;color:var(--ink-3)}
@media (max-width:820px){.hero .wrap{grid-template-columns:1fr}.cover{justify-self:start;width:min(70%,260px);order:-1}}

/* about */
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:clamp(2rem,5vw,5rem)}
@media (max-width:820px){.two{grid-template-columns:1fr}}
.lede{font-family:var(--display);font-size:clamp(1.35rem,2.2vw,1.7rem);line-height:1.35;color:var(--ink);font-weight:300}
.facts{margin-top:2rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;border-top:1px solid var(--line);padding-top:1.25rem}
.facts div b{display:block;font-family:var(--display);font-size:1.6rem;font-weight:400;color:var(--accent-deep)}
.facts div span{font-size:.85rem;color:var(--ink-3);letter-spacing:.04em}
@media (max-width:480px){.facts{grid-template-columns:1fr 1fr}}

/* parts */
.parts{list-style:none;margin:3rem 0 0;padding:0;border-top:1px solid var(--line)}
.parts li{display:grid;grid-template-columns:5rem minmax(0,1.3fr) minmax(0,1fr);gap:1.5rem;padding:1.6rem 0;border-bottom:1px solid var(--line);align-items:baseline}
.parts .n{font-family:var(--display);font-size:2.2rem;line-height:1;color:var(--accent-2);font-weight:300}
.parts h3{font-size:1.3rem}
.parts h3 small{display:block;font-family:var(--body);font-size:.85rem;color:var(--accent);letter-spacing:.06em;text-transform:uppercase;margin-top:.35rem;font-weight:600}
.parts ol{margin:0;padding:0;list-style:none;color:var(--ink-2);font-size:.98rem}
.parts ol li{display:grid;grid-template-columns:3.4rem 1fr;gap:.5rem;padding:.15rem 0;border:0}
.parts ol li::before{content:attr(data-ch);color:var(--ink-3);font-variant-numeric:tabular-nums;white-space:nowrap}
@media (max-width:720px){.parts li{grid-template-columns:3.2rem 1fr}.parts ol{grid-column:2}.parts .n{font-size:1.6rem}}

/* interactions strip */
.inter{margin-top:3rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.inter div{background:var(--paper-2);padding:1.2rem 1.25rem}
.inter b{display:block;font-family:var(--display);font-weight:400;font-size:1.2rem;margin-bottom:.3rem}
.inter p{font-size:.92rem;color:var(--ink-2)}
@media (max-width:820px){.inter{grid-template-columns:1fr 1fr}}
@media (max-width:420px){.inter{grid-template-columns:1fr}}

/* gallery */
.gallery{margin-top:2.5rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem}
.gallery figure{margin:0}
.gallery button{all:unset;cursor:zoom-in;display:block;width:100%;border-radius:4px;overflow:hidden;background:var(--paper-2);aspect-ratio:2/5;border:1px solid var(--line);transition:transform .2s,box-shadow .2s}
.gallery button:hover{transform:translateY(-3px);box-shadow:0 18px 30px -18px rgba(20,40,45,.45)}
.gallery button:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px}
.gallery img{width:100%;height:100%;object-fit:cover;object-position:top}
.gallery figcaption{margin-top:.7rem;font-size:.92rem;color:var(--ink-2);line-height:1.35}
@media (max-width:820px){.gallery{grid-template-columns:1fr 1fr}}
.lightbox{position:fixed;inset:0;background:rgba(10,16,18,.92);z-index:50;display:flex;align-items:center;justify-content:center;padding:1rem}
.lightbox[hidden]{display:none}
.lightbox img{max-height:calc(100vh - 2rem);max-width:min(100%,560px);width:auto;border-radius:4px;background:#fff}
.lightbox button{position:absolute;top:max(1rem,env(safe-area-inset-top,0px));right:max(1rem,env(safe-area-inset-right,0px));background:none;border:1px solid rgba(255,255,255,.4);color:#fff;border-radius:999px;width:40px;height:40px;font-size:1.3rem;cursor:pointer}

/* author */
.author .wrap{display:grid;grid-template-columns:minmax(0,280px) minmax(0,1fr);gap:clamp(2rem,5vw,5rem);align-items:start}
.author img{border-radius:4px;filter:saturate(.9)}
.author .roles{margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--line);display:grid;gap:.6rem;font-size:.95rem}
.author .roles>div{display:grid;grid-template-columns:3.5rem 1fr;gap:.75rem}
.author .roles span{color:var(--ink-3);white-space:nowrap}
.highlights{margin:1.75rem 0 0;padding:0;list-style:none;display:grid;gap:.9rem}
.highlights li{padding-left:1.25rem;position:relative;color:var(--ink-2)}
.highlights li::before{content:"";position:absolute;left:0;top:.7em;width:.5rem;height:1px;background:var(--accent-2)}
@media (max-width:720px){.author .wrap{grid-template-columns:1fr}.author img{width:min(100%,240px)}}

/* writing */
.posts{margin-top:2.5rem;display:grid;grid-template-columns:1fr 1fr;gap:2rem}
@media (max-width:720px){.posts{grid-template-columns:1fr}}
.post{display:grid;gap:1rem}
.post a.img{display:block;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:#fff;aspect-ratio:4/3}
.post a.img img{width:100%;height:100%;object-fit:contain;padding:6%}
.post time{font-size:.85rem;color:var(--ink-3);letter-spacing:.04em}
.post h3 a{color:var(--ink)}
.post p{color:var(--ink-2);font-size:.98rem}
.post .more{font-weight:600;font-size:.95rem}

/* contact */
.contact .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:clamp(2rem,5vw,5rem)}
@media (max-width:820px){.contact .wrap{grid-template-columns:1fr}}
form{display:grid;gap:1rem}
.field{display:grid;gap:.35rem}
label{font-size:.85rem;font-weight:600;letter-spacing:.04em;color:var(--ink-2)}
input,textarea{font:inherit;color:var(--ink);background:var(--paper-2);border:1px solid var(--line);border-radius:4px;padding:.7rem .85rem;width:100%}
input:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%,transparent)}
textarea{min-height:140px;resize:vertical}
form button{justify-self:start}
.note{font-size:.9rem;color:var(--ink-3)}

footer{border-top:1px solid var(--line);padding-block:2rem;font-size:.9rem;color:var(--ink-3)}
footer .wrap{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between}
footer a{color:var(--ink-2)}

/* dark hero band */
header{background:var(--hero-bg);border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:none}
body::before{background:var(--hero-bg)}
.brand{color:var(--hero-fg)}
.brand em{color:var(--hero-accent)}
.brand{display:inline-block}
.brand span{display:block}
.nav li a{color:rgba(255,255,255,.72)}
.nav li a:hover{color:#fff}
.nav .buy{color:var(--hero-accent)}
.menu-btn{color:var(--hero-fg);border-color:rgba(255,255,255,.25)}
@media (max-width:760px){.nav ul{background:var(--hero-bg);border-color:rgba(255,255,255,.1)}.nav li a{border-color:rgba(255,255,255,.1)}}
.hero{background:var(--hero-bg);color:var(--hero-fg)}
.hero .eyebrow{color:var(--hero-accent)}
.hero h1{letter-spacing:-.035em;font-weight:700}
.hero h1 strong{color:var(--hero-accent);font-weight:700}
.hero .sub{color:rgba(255,255,255,.78);font-style:normal;font-weight:400}
.hero .by{color:rgba(255,255,255,.6)}
.hero .by b{color:#fff}
.hero .btn{border-color:rgba(255,255,255,.35);color:#fff}
.hero .btn:hover{background:rgba(255,255,255,.1);color:#fff}
.hero .btn.primary{background:var(--hero-accent);border-color:var(--hero-accent);color:var(--hero-btn-fg)}
.hero .btn.primary:hover{filter:brightness(1.08);background:var(--hero-accent);border-color:var(--hero-accent)}
.hero .btn.ghost{border-color:transparent;color:rgba(255,255,255,.75)}
.hero .btn.ghost:hover{background:rgba(255,255,255,.08);color:#fff}
.cover img{box-shadow:0 40px 80px -24px rgba(0,0,0,.7),0 2px 8px rgba(0,0,0,.4)}
.pub{color:rgba(255,255,255,.5)}
/* type system */
h1,h2,h3{font-family:var(--display);letter-spacing:-.025em;font-weight:600}
h2{font-size:clamp(1.8rem,3vw,2.4rem)}
.lede{font-family:var(--body);font-weight:400;font-size:clamp(1.2rem,1.8vw,1.45rem);letter-spacing:-.01em}
.eyebrow,.parts ol li::before,.post time,.facts div span,.author .roles span,label,.pub{font-family:var(--mono);letter-spacing:.06em;text-transform:uppercase;font-size:.72rem;font-weight:500}
.parts ol li::before{text-transform:none;letter-spacing:0;font-size:.8rem}
.parts .n{font-family:var(--mono);font-size:.85rem;color:var(--accent);letter-spacing:.1em;font-weight:500;align-self:start;padding-top:.45rem}
.parts .n::before{content:"PART "}
.parts h3{font-size:1.25rem}
.facts div b{font-family:var(--display);font-weight:600;font-size:2rem;letter-spacing:-.03em;color:var(--ink)}
.inter b{font-family:var(--display);font-weight:600;font-size:1.05rem}
.highlights li::before{background:var(--accent)}
.btn{border-radius:6px}
input,textarea{border-radius:6px}
.gallery button,.post a.img,.author img,.cover img{border-radius:8px}

/* bands + framework */
.band{background:var(--paper-2)}
.framework .wrap{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(2rem,6vw,5rem);align-items:center}
@media (max-width:820px){.framework .wrap{grid-template-columns:1fr}}
.framework .detail{margin-top:1.75rem;padding-left:1.25rem;border-left:3px solid var(--accent);min-height:7rem}
.framework .detail h3{font-size:1.15rem}
.framework .detail p{margin-top:.4rem;color:var(--ink-2)}
.framework .fwRef{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)!important;margin-top:.75rem}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
@media (max-width:480px){.cards{grid-template-columns:1fr}}
.card{all:unset;box-sizing:border-box;cursor:pointer;display:block;background:var(--paper-2);border:1px solid var(--line);border-radius:8px;padding:1.4rem 1.4rem 1.3rem;min-height:9.5rem;transition:background .15s,color .15s,border-color .15s,transform .15s}
.card:hover{transform:translateY(-2px);border-color:var(--ink-3)}
.card:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.card[aria-pressed="true"]{background:var(--hero-bg);color:#fff;border-color:var(--hero-bg)}
.card .num{display:block;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.card[aria-pressed="true"] .num{color:var(--hero-accent)}
.card strong{display:block;font-family:var(--display);font-weight:600;font-size:1.1rem;margin:1rem 0 .3rem;letter-spacing:-.01em}
.card small{display:block;font-size:.85rem;opacity:.75}

/* ===== blog pages ===== */
.post-hero{padding-block:clamp(3rem,6vw,5rem)}
.post-hero .wrap{display:block}
.post-hero .eyebrow a{color:inherit}
.post-hero h1{font-size:clamp(2rem,4.4vw,3.4rem);font-weight:600;max-width:22ch;margin-top:.75rem}
.post-hero .deck{margin-top:1rem;max-width:52ch;font-size:clamp(1.1rem,1.6vw,1.3rem);line-height:1.45;color:rgba(255,255,255,.78)}
.post-hero .by{margin-top:1.25rem}
.post-body{padding-block:clamp(3rem,6vw,5rem);background:var(--paper-2)}
.more-writing.band{background:var(--paper)}
.post-body .prose{margin:0 auto;max-width:70ch;font-size:1.0875rem;line-height:1.7}
.post-body .prose>*+*{margin-top:1.1rem}
.post-body .prose h2{font-size:clamp(1.5rem,2.4vw,1.9rem);margin-top:2.75rem}
.post-body .prose h3{font-size:1.2rem;margin-top:2rem}
.post-body .prose h2+*,.post-body .prose h3+*{margin-top:.75rem}
.post-body .prose ul,.post-body .prose ol{padding-left:1.4rem}
.post-body .prose li+li{margin-top:.4rem}
.post-body .prose a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--accent) 45%,transparent)}
.post-body .prose a:hover{text-decoration-color:var(--accent)}
.callouts{display:grid;gap:1rem;margin-top:1.25rem}
.callout{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:1.25rem 1.4rem 1.25rem 1.6rem;position:relative}
.callout::before{content:"";position:absolute;left:0;top:1.25rem;bottom:1.25rem;width:3px;background:var(--accent);border-radius:2px}
.callout h3{font-size:1.08rem;margin:0}
.callout p{margin-top:.5rem;color:var(--ink-2);font-size:1rem}
.fig{margin:2rem 0 0}
.fig img{border:1px solid var(--line);border-radius:8px;background:#fff}
.fig.tall img{max-width:min(100%,480px);margin:0 auto}
.fig figcaption{margin-top:.75rem;font-size:.92rem;line-height:1.5;color:var(--ink-2)}
.pull{margin:2rem 0 0;padding:0 0 0 1.4rem;border-left:3px solid var(--accent);font-family:var(--display);font-size:clamp(1.2rem,1.8vw,1.45rem);font-weight:500;letter-spacing:-.015em;line-height:1.4;color:var(--ink)}
.steps li{margin-top:.75rem}
.steps li::marker{color:var(--accent);font-weight:600}
.refs{font-size:.95rem;color:var(--ink-2)}
.refs li+li{margin-top:.6rem}
.refs a{word-break:break-all}
.cite{margin-top:3rem;padding:1.25rem 1.4rem;background:var(--paper);border:1px solid var(--line);border-radius:8px;font-size:.95rem}
.cite p+p{margin-top:.5rem}
.cite p,.refs li{overflow-wrap:anywhere}
.more-writing .posts{margin-top:1.5rem;grid-template-columns:minmax(0,520px)}