:root {
  --paper:#eef2f2; --surface:#ffffff; --surface2:#f7faf9; --ink:#16262a; --muted:#586a6f;
  --line:#dde5e5; --line2:#eef2f2;
  --upper:#009da1; --lower:#c0612b; --both:#5a6b70; --accent:#00868a; --upper-ink:#00696d; --lower-ink:#9c4a1b;
  --upper-wash:rgba(0,157,161,.12); --lower-wash:rgba(192,97,43,.12); --both-wash:rgba(90,107,112,.12);
  --shadow:0 1px 2px rgba(20,40,44,.06), 0 6px 20px rgba(20,40,44,.06);
  --serif:"Charter","Bitstream Charter","Sitka Text","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Code",Menlo,Consolas,monospace;
  --maxw:1120px;
}
@media (prefers-color-scheme:dark) {
  :root {
    --paper:#0e1416; --surface:#161e20; --surface2:#1b2427; --ink:#e7edee; --muted:#93a5a9;
    --line:#283336; --line2:#1f292c;
    --upper:#2bb5b7; --lower:#e4884e; --both:#9fb0b4; --accent:#2bb5b7; --upper-ink:#2bb5b7; --lower-ink:#e4884e;
    --upper-wash:rgba(43,181,183,.16); --lower-wash:rgba(228,136,78,.16); --both-wash:rgba(159,176,180,.14);
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  }
}
:root[data-theme="light"] {
  --paper:#eef2f2; --surface:#ffffff; --surface2:#f7faf9; --ink:#16262a; --muted:#586a6f;
  --line:#dde5e5; --line2:#eef2f2;
  --upper:#009da1; --lower:#c0612b; --both:#5a6b70; --accent:#00868a; --upper-ink:#00696d; --lower-ink:#9c4a1b;
  --upper-wash:rgba(0,157,161,.12); --lower-wash:rgba(192,97,43,.12); --both-wash:rgba(90,107,112,.12);
  --shadow:0 1px 2px rgba(20,40,44,.06), 0 6px 20px rgba(20,40,44,.06);
}
:root[data-theme="dark"] {
  --paper:#0e1416; --surface:#161e20; --surface2:#1b2427; --ink:#e7edee; --muted:#93a5a9;
  --line:#283336; --line2:#1f292c;
  --upper:#2bb5b7; --lower:#e4884e; --both:#9fb0b4; --accent:#2bb5b7; --upper-ink:#2bb5b7; --lower-ink:#e4884e;
  --upper-wash:rgba(43,181,183,.16); --lower-wash:rgba(228,136,78,.16); --both-wash:rgba(159,176,180,.14);
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  line-height:1.6;-webkit-font-smoothing:antialiased;font-size:16px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.15;text-wrap:balance;margin:0}
a{color:var(--accent)}
.eyebrow{font-family:var(--mono);text-transform:uppercase;letter-spacing:.18em;font-size:12px;color:var(--muted)}

/* nav */
.nav{position:static;background:var(--paper);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;gap:6px;flex-wrap:wrap;align-items:center;padding-top:10px;padding-bottom:10px}
.nav a{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted);text-decoration:none;padding:5px 9px;border-radius:6px}
.nav a:hover{color:var(--ink);background:var(--surface2)}
@media (max-width:720px){
  .nav .wrap{flex-wrap:nowrap;overflow-x:auto;gap:4px}
  .nav a{white-space:nowrap;flex:none}
}

/* masthead */
.mast{padding:60px 0 34px;position:relative}
.mast .plumb{position:absolute;left:calc(50% - var(--maxw)/2 + 24px);top:40px;bottom:20px;width:0}
.masthead-grid{display:grid;grid-template-columns:1fr;gap:18px;padding-left:28px;
  border-left:2px solid var(--line)}
.mast h1{font-size:clamp(34px,6vw,60px);letter-spacing:-.01em;margin:.1em 0 .05em}
.mast .sub{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:60ch;font-family:var(--serif);font-style:italic}
.metachips{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.metachips span{font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;color:var(--ink);
  background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 11px;box-shadow:var(--shadow)}

/* generic section rhythm */
.band{padding:26px 0;scroll-margin-top:24px}
.band h2{font-size:clamp(22px,3vw,30px);margin-bottom:6px}
.lead{color:var(--muted);max-width:70ch;margin:.2em 0 0}

/* pattern / diagrams */
.figs{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin:20px 0}
figure.fig{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;box-shadow:var(--shadow)}
figure.fig img{width:100%;display:block;background:#fff}
figure.fig figcaption{padding:12px 15px;font-size:14px;color:var(--muted)}
figure.fig figcaption b{color:var(--ink);font-weight:600}

.crosswrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:18px}
.cross{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow)}
.cross h3{font-size:18px;display:flex;align-items:center;gap:9px}
.cross .dot{width:11px;height:11px;border-radius:50%;flex:none}
.cross.upper .dot{background:var(--upper)} .cross.lower .dot{background:var(--lower)}
.tw{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:12px}
.tw h4{margin:0 0 6px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.tw ul{margin:0;padding-left:16px;font-size:14px}
.tw li{margin:3px 0}
.tw .tight h4,.tw .weak h4{color:var(--muted)}

.chain{margin-top:18px;background:var(--surface2);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:12px;padding:16px 20px}
.chain b{font-family:var(--serif)}
.flow{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:10px;font-family:var(--mono);font-size:12.5px}
.flow span{background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:5px 9px}
.flow i{color:var(--muted);font-style:normal}

.callout{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:18px}
.note{border-radius:12px;padding:16px 18px;border:1px solid var(--line);background:var(--surface)}
.note.test{border-left:3px solid var(--lower)}
.note.safe{border-left:3px solid #c8452f;background:color-mix(in srgb,#c8452f 6%,var(--surface))}
.note.honest{border-left:3px solid var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--surface));margin-top:16px}
.note h3{font-size:15px;margin-bottom:6px}
.note p,.note li{font-size:14px;color:var(--ink)}
.note ul{margin:8px 0 0;padding-left:18px}
.note .k{font-family:var(--mono);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.tests{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:16px}
.tfig{margin:0;display:flex;gap:14px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;box-shadow:var(--shadow)}
.tfig img{width:104px;height:132px;object-fit:contain;background:#fff;border-radius:8px;flex:none}
.tfig figcaption{font-size:13.5px;color:var(--muted)}
.tfig b{display:block;font-family:var(--serif);font-size:15px;color:var(--ink);margin-bottom:4px}

/* how-to schedule */
.howto{display:grid;grid-template-columns:1.1fr 1fr;gap:18px;margin-top:16px}
@media (max-width:760px){.howto{grid-template-columns:1fr}}
.seqcard,.week{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow)}
.seq{list-style:none;margin:10px 0 0;padding:0;counter-reset:s}
.seq li{position:relative;padding:9px 0 9px 40px;border-top:1px solid var(--line2)}
.seq li:first-child{border-top:0}
.seq li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:8px;width:26px;height:26px;
  border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:13px;
  display:grid;place-items:center;font-weight:600}
.seq b{font-family:var(--serif)}
.seq small{color:var(--muted)}
.wk{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-top:12px}
.wk div{text-align:center;border-radius:8px;padding:9px 4px;font-size:12px;border:1px solid var(--line)}
.wk .d{font-family:var(--mono);color:var(--muted);font-size:10px;letter-spacing:.06em}
.wk .full{background:var(--upper-wash);border-color:transparent}
.wk .light{background:var(--surface2)}
.wk b{display:block;margin-top:3px;font-family:var(--serif);font-size:12px}
.timeline{display:flex;gap:0;margin-top:14px;flex-wrap:wrap}
.timeline div{flex:1;min-width:120px;border-top:2px solid var(--line);padding:9px 10px 0}
.timeline div.on{border-top-color:var(--accent)}
.timeline .wk-lab{font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.05em}
.timeline p{margin:3px 0 0;font-size:13px}

/* program */
.phase{padding:22px 0 8px;scroll-margin-top:24px}
.phead{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:2px solid var(--ink);padding-bottom:8px}
.ptitle{display:flex;align-items:baseline;gap:12px}
.pnum{font-family:var(--mono);font-size:13px;color:var(--muted)}
.phead h2{font-size:clamp(20px,3vw,27px)}
.pcount{font-family:var(--mono);font-size:11.5px;color:var(--muted);white-space:nowrap}
.pblurb{color:var(--muted);max-width:74ch;margin:12px 0 16px;font-size:15px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(288px,1fr));gap:16px}

.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;border-top:3px solid var(--both)}
.card[data-region="upper"]{border-top-color:var(--upper)}
.card[data-region="lower"]{border-top-color:var(--lower)}
.shots{display:flex;gap:6px;background:#fff;padding:8px;align-items:flex-start}
.shots img{flex:1 1 0;min-width:0;height:auto;max-height:440px;object-fit:contain;background:#fff;cursor:zoom-in;border-radius:4px}
.cbody{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.chead{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.chead h3{font-size:17.5px}
.tags{display:flex;flex-wrap:wrap;gap:7px;align-items:center}
.rtag{font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;
  padding:3px 8px;border-radius:6px;font-weight:600}
.r-upper{color:var(--upper-ink);background:var(--upper-wash)}
.r-lower{color:var(--lower-ink);background:var(--lower-wash)}
.r-both{color:var(--both);background:var(--both-wash)}
.dose{font-family:var(--mono);font-size:12px;color:var(--ink);font-variant-numeric:tabular-nums}
.target{margin:0;font-size:13.5px;color:var(--muted)}
.cue{margin:0;font-size:14.5px}
.src{margin-top:auto;font-family:var(--mono);font-size:10.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;padding-top:6px}
.src::before{content:"src · "}

/* desk break */
.dbstrip{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-top:16px}
.dbitem{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.dbitem img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block}
.dbitem figcaption{padding:9px 11px;font-size:12px;color:var(--muted)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.86);display:none;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lightbox.open{display:flex}
.lightbox img{max-width:96vw;max-height:92vh;object-fit:contain;border-radius:6px;box-shadow:0 10px 50px rgba(0,0,0,.6);background:#fff}
.lbclose{position:absolute;top:14px;right:20px;background:none;border:0;color:#fff;font-size:34px;line-height:1;cursor:pointer;padding:6px}
.lbclose:focus-visible{outline:2px solid #fff;outline-offset:2px}

/* footer */
footer{border-top:1px solid var(--line);margin-top:40px;padding:30px 0 60px;color:var(--muted);font-size:13.5px}
footer h4{font-size:14px;color:var(--ink);margin-bottom:8px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.1em;font-weight:500}
footer ul{margin:0 0 16px;padding-left:18px} footer li{margin:4px 0}
.disc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-top:8px}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{
  :root{--paper:#fff;--surface:#fff;--surface2:#fff;--ink:#16262a;--muted:#4c5c61;--line:#d5dcdc;--line2:#e8eded;--upper:#00696d;--lower:#9c4a1b;--both:#4c5c61;--accent:#00696d;--upper-ink:#00696d;--lower-ink:#9c4a1b;--upper-wash:#edf5f5;--lower-wash:#f7efe8;--both-wash:#eef1f1}
  .nav{display:none!important}
  body{background:#fff;font-size:11.5pt}
  .card,.fig,.cross,.note,.seqcard,.week,.dbitem{box-shadow:none;break-inside:avoid}
  .phase{break-before:auto} .mast{padding-top:8px}
  a{color:inherit;text-decoration:none}
}

/* ===== multi-page chrome (added by tools/build.py) ===================== */

/* The nav is the only way between pages now, so keep it reachable. */
.nav{position:sticky;top:0;z-index:50}
/* inset shadow rather than a border, so marking the current page shifts nothing */
.nav a[aria-current="page"]{color:var(--ink);background:var(--surface);
  box-shadow:inset 0 0 0 1px var(--line)}

/* Each section is now a page, so its heading is promoted h2 -> h1. */
.band h1{font-size:clamp(22px,3vw,30px);margin-bottom:6px}
.phead h1{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0;
  font-size:clamp(20px,3vw,27px);text-wrap:balance}

/* ---- hub: link cards ---- */
.startgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(262px,1fr));
  gap:16px;margin-top:16px}
.startcard,.pcard{display:flex;flex-direction:column;gap:7px;text-decoration:none;
  color:inherit;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:18px 20px;box-shadow:var(--shadow);height:100%}
.startcard:hover,.pcard:hover{border-color:var(--accent)}
.startcard:focus-visible,.pcard:focus-visible{outline:2px solid var(--accent);
  outline-offset:2px}
.startcard h3,.pcard h3{font-family:var(--serif);font-size:18px;font-weight:600;margin:0}
.startcard p,.pcard p{margin:0;font-size:14px;color:var(--muted)}
.startcard .eyebrow,.pcard-num{font-family:var(--mono);font-size:11px;
  text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}
.phasegrid{list-style:none;margin:16px 0 0;padding:0;display:grid;
  grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:16px}
.pcard{border-top:3px solid var(--accent)}

/* ---- prev / next pager ---- */
.pager{display:flex;gap:14px;justify-content:space-between;align-items:flex-start;
  margin-top:38px;border-top:1px solid var(--line);padding-top:18px}
.pager a{display:flex;flex-direction:column;gap:3px;text-decoration:none;max-width:47%}
.pager .dir{font-family:var(--mono);font-size:10.5px;text-transform:uppercase;
  letter-spacing:.08em;color:var(--muted)}
.pager .lab{font-family:var(--serif);font-size:16.5px;color:var(--ink)}
.pager a:hover .lab{color:var(--accent)}
.pager .next{margin-left:auto;text-align:right}

@media print{.nav,.pager{display:none!important}}