/* Patterns of Transformation — reading system. Ported verbatim from the settled mockups (Treatment A). */

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto}
:root{
  --bg:#FAF5EC; --bg-raise:#FFFCF5; --ink:#27211A; --ink-2:#5D5347; --ink-3:#8B8071;
  --rule:rgba(62,48,30,.22); --rule-soft:rgba(62,48,30,.10);
  --rk:#963F3A; --mc:#46586B; --st:#556344; --tr:#8A6222; --adv:#5D5347;
  --pop-shadow:0 12px 36px rgba(44,30,12,.16),0 2px 8px rgba(44,30,12,.10);
}
[data-theme=dark]{
  --bg:#1A1A1B; --bg-raise:#242426; --ink:#E7E5E1; --ink-2:#AEACA7; --ink-3:#7F7D79;
  --rule:rgba(255,255,255,.24); --rule-soft:rgba(255,255,255,.10);
  --rk:#D68F86; --mc:#9FB3C8; --st:#A9B98D; --tr:#D3A855; --adv:#AEACA7;
  --pop-shadow:0 12px 36px rgba(0,0,0,.55),0 2px 8px rgba(0,0,0,.4);
}
[data-theme=dark] .illo img, [data-theme=dark] .pv-img img, [data-theme=dark] .vg-main img, [data-theme=dark] .mark img{filter:invert(.88) hue-rotate(180deg)}
[data-theme=dark] .photo img{opacity:.88}

/* top bar */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:14px;
  padding:10px 24px;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--rule-soft)}
.topbar .mark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.topbar .mark img{width:26px;height:auto}
.topbar .mark span{font-family:var(--sans);font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase}
.topbar .spacer{flex:1}
.m-toc{display:none}

/* home hero — image-led landing. Bar stays sticky: transparent over the
   photo, reverts to the solid bar once the hero scrolls past (JS toggle). */
.hero{position:relative;width:100vw;margin-left:calc(50% - 50vw);
  margin-top:calc(-1 * var(--bar-h,46px));
  height:min(82vh,720px);min-height:460px;overflow:hidden;background:#111}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 40%}
.hero .scrim{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,8,6,.34) 0%,rgba(10,8,6,0) 30%,rgba(10,8,6,.18) 58%,rgba(10,8,6,.80) 100%)}
.hero .hero-inner{position:absolute;left:0;right:0;bottom:0;max-width:1380px;margin:0 auto;padding:0 40px 52px;color:#fff}
.hero .kicker{color:rgba(255,255,255,.82);margin:0 0 14px}
.hero h1{color:#fff;font-size:clamp(2.4rem,5.2vw,4rem);max-width:15ch;text-shadow:0 1px 20px rgba(0,0,0,.35)}
.hero .subtitle{color:rgba(255,255,255,.92);font-size:clamp(1.15rem,2vw,1.5rem);max-width:34ch;text-shadow:0 1px 14px rgba(0,0,0,.4)}
.hero .byline{color:rgba(255,255,255,.85);margin:16px 0 4px}
.hero .meta{color:rgba(255,255,255,.7)}
.hero figcaption{position:absolute;right:40px;bottom:16px;max-width:44ch;text-align:right;font-family:var(--sans);font-size:.72rem;line-height:1.5;color:rgba(255,255,255,.62)}
.topbar{transition:background-color .25s ease,border-color .25s ease}
@media (prefers-reduced-motion:reduce){.topbar{transition:none}}
.topbar.over-hero{background:transparent;backdrop-filter:none;border-bottom-color:transparent}
.topbar.over-hero .mark,.topbar.over-hero .mark span{color:#fff}
.topbar.over-hero .mark img{filter:invert(1) brightness(1.7)}
.topbar.over-hero .theme-btn{color:#fff;border-color:rgba(255,255,255,.55)}
.topbar.over-hero .site-menu summary,.topbar.over-hero .m-toc summary{color:rgba(255,255,255,.9)}
.topbar.over-hero .site-menu summary:hover{color:#fff}
@media (max-width:760px){
  .hero{height:min(74vh,540px);min-height:400px}
  .hero .hero-inner{padding:0 22px 58px}
  .hero figcaption{left:22px;right:22px;max-width:none;bottom:16px}
}

/* frame */
.page{max-width:1380px;margin:0 auto;display:grid;grid-template-columns:232px minmax(0,1fr);gap:56px;padding:40px 40px 0}
.rail{position:sticky;top:64px;align-self:start;max-height:calc(100vh - 80px);overflow-y:auto;padding-bottom:24px}
.rail-h{font-family:var(--sans);font-size:.67rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);margin:0 0 10px 12px}
.toc{font-family:var(--sans);font-size:.83rem;line-height:1.4;margin-bottom:34px}
.toc a{display:block;padding:5px 12px;border-left:2px solid var(--rule-soft);color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--ink)}
.toc a.active{border-left-color:var(--ink);color:var(--ink);font-weight:600}
.toc a.lvl3{padding-left:26px;font-size:.78rem}
.legend{font-family:var(--sans);font-size:.83rem}
.legend a{display:flex;align-items:center;gap:9px;padding:4px 12px;color:var(--ink-2);text-decoration:none}
.legend a:hover{color:var(--ink)}
.legend .dot{width:10px;height:10px;border-radius:50%;flex:none}
.legend a.rail-h{display:block;padding:0;margin:0 0 10px 12px;color:var(--ink-3)}
.legend a.rail-h:hover{color:var(--ink)}

/* article */
article{max-width:672px;position:relative}
.article-wrap{padding-right:344px}
p{margin:0 0 1.25em}
strong{font-weight:700}
a{color:inherit;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
  text-decoration-color:color-mix(in srgb,var(--ink) 32%,transparent)}
a:hover{text-decoration-color:var(--ink)}
a[data-cat]{text-decoration-thickness:2px}
a[data-cat=rk]{text-decoration-color:color-mix(in srgb,var(--rk) 65%,transparent)}
a[data-cat=mc]{text-decoration-color:color-mix(in srgb,var(--mc) 65%,transparent)}
a[data-cat=st]{text-decoration-color:color-mix(in srgb,var(--st) 65%,transparent)}
a[data-cat=tr]{text-decoration-color:color-mix(in srgb,var(--tr) 65%,transparent)}
a[data-cat=rk]:hover{color:var(--rk);text-decoration-color:var(--rk)}
a[data-cat=mc]:hover{color:var(--mc);text-decoration-color:var(--mc)}
a[data-cat=st]:hover{color:var(--st);text-decoration-color:var(--st)}
a[data-cat=tr]:hover{color:var(--tr);text-decoration-color:var(--tr)}

.kicker{font-family:var(--sans);font-size:.72rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);margin:0 0 18px}
.kicker a{color:var(--ink-3);text-decoration:none}
.kicker a:hover{color:var(--ink);text-decoration:underline}
.kicker .cat-name{color:var(--hue)}
.byline{font-family:var(--sans);font-size:.86rem;color:var(--ink-2);margin:14px 0 6px}
.meta{font-family:var(--sans);font-size:.78rem;color:var(--ink-3);margin:0 0 30px}
.meta .sep{margin:0 7px;opacity:.5}

.illo{margin:2em auto;text-align:center}
.illo.half img{max-width:min(400px,88%)}
.illo.full img{max-width:min(560px,96%)}
figure.photo{margin:2.2em 0;position:relative}
figure.photo img{display:block;border-radius:3px}
blockquote{margin:1.6em 0 1.6em 0;padding:.2em 0 .2em 1.4em;border-left:3px solid var(--rule);color:var(--ink-2)}
blockquote p{margin-bottom:.8em}
blockquote .attr{display:block;text-align:right;font-family:var(--sans);font-size:.8rem;letter-spacing:.03em;color:var(--ink-3);font-style:normal}
.headline{margin:2.4em 0;color:var(--ink)}
hr.sect{border:0;border-top:1px solid var(--rule);margin:3em auto;width:38%}

/* sidenotes */
.sn-num{display:inline-block;font-family:var(--sans);font-size:.68em;font-weight:700;color:var(--tr);
  line-height:1;position:relative;top:-.45em;background:none;border:0;padding:0 1px;cursor:default}
.sn-body{float:right;clear:right;width:288px;margin-right:-344px;margin-top:4px;margin-bottom:10px;
  font-family:var(--sans);font-size:.8rem;line-height:1.55;color:var(--ink-2)}
.sn-body .n{font-weight:700;color:var(--tr);margin-right:4px}
figure.photo figcaption{position:absolute;left:calc(100% + 56px);bottom:4px;width:288px;
  font-family:var(--sans);font-size:.8rem;line-height:1.55;color:var(--ink-2)}

/* chips + related terms: italic serif term links */
.chips{display:flex;flex-wrap:wrap;align-items:baseline;margin:.7em 0 1.4em;padding:0;list-style:none}
.chips li+li::before{content:"\00B7";color:var(--ink-3);margin:0 10px;font-style:normal}
.chip{font-family:var(--serif);font-style:italic;font-size:1.05rem;font-weight:400;color:var(--hue);
  text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--hue) 45%,transparent);text-underline-offset:3px}
.chip:hover{text-decoration-color:var(--hue)}
.chip.current{text-decoration:none;border-bottom:2px solid var(--hue);cursor:default}
.chip.rk{--hue:var(--rk)}.chip.mc{--hue:var(--mc)}.chip.st{--hue:var(--st)}.chip.tr{--hue:var(--tr)}
.cat-band{height:4px;border-radius:2px;background:var(--hue);width:64px;margin:0 0 22px}

/* vocabulary index grid */
.vocab-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px 48px;margin:2.6em 0 1em}
.vg-main{display:block;text-align:center;text-decoration:none}
.vg-main img{max-width:230px;display:block;margin:0 auto}
.vg-main h2{margin:.5em 0 .45em;font-size:1.5rem}
.vg-main h2::after{content:"";display:block;width:46px;height:3px;border-radius:2px;background:var(--hue);margin:10px auto 0}
.vg-main:hover h2{color:var(--hue)}
.vg-sub{text-align:center}
.vg-sub .sep{color:var(--ink-3);margin:0 9px}
@media (max-width:919px){.vocab-grid{grid-template-columns:1fr;gap:40px}}

/* case study table */
.table-wrap{overflow-x:auto;margin:1.6em 0;container-type:inline-size}
table.patterns{border-collapse:collapse;font-family:var(--sans);font-size:.86rem;min-width:600px;width:100%}
table.patterns th{text-align:left;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);
  padding:8px 14px 8px 0;border-bottom:2px solid var(--rule)}
table.patterns th a{color:var(--ink-3);text-decoration:none}
table.patterns td{padding:11px 14px 11px 0;border-bottom:1px solid var(--rule-soft);vertical-align:top}

/* narrow column: stack each case study as a block instead of scrolling.
   Labels here mirror the thead — keep in sync if columns ever change. */
@container (max-width:599px){
  table.patterns{display:block;min-width:0}
  table.patterns thead{display:none}
  table.patterns tbody,table.patterns tr,table.patterns td{display:block}
  table.patterns tr{padding:2px 0 12px;border-bottom:1px solid var(--rule-soft)}
  table.patterns td{display:flex;gap:14px;padding:3px 0;border-bottom:none}
  table.patterns td::before{flex:0 0 42%;font-size:.7rem;font-weight:400;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);padding-top:3px}
  table.patterns td:first-child{display:block;font-size:.95rem;font-weight:600;padding:12px 0 5px}
  table.patterns td:nth-child(2)::before{content:"Type"}
  table.patterns td:nth-child(3)::before{content:"Risk"}
  table.patterns td:nth-child(4)::before{content:"Magic Circle"}
  table.patterns td:nth-child(5)::before{content:"Structure"}
  table.patterns td:nth-child(6)::before{content:"Transformation"}
}

/* pager */
.pager{display:flex;justify-content:space-between;gap:18px;margin:64px 0 60px;padding-top:26px;border-top:1px solid var(--rule)}
.pager a{flex:1;max-width:47%;text-decoration:none;color:var(--ink)}
.pager a:hover .pg-title{text-decoration:underline;text-underline-offset:3px}
.pager .next{text-align:right;margin-left:auto}
.pg-label{display:block;font-family:var(--sans);font-size:.68rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);margin-bottom:7px}
.pg-title{font-size:1.15rem;line-height:1.3}
.pg-arrow{vertical-align:1px;color:var(--ink-3);transition:transform .18s ease,color .18s ease}
.next .pg-arrow{margin-left:12px}
.prev .pg-arrow{margin-right:12px}
.pager a:hover .pg-arrow{color:var(--ink)}
.pager a.next:hover .pg-arrow{transform:translateX(5px)}
.pager a.prev:hover .pg-arrow{transform:translateX(-5px)}
@media (prefers-reduced-motion:reduce){.pg-arrow{transition:none}.pager a:hover .pg-arrow,.pager a.next:hover .pg-arrow,.pager a.prev:hover .pg-arrow{transform:none}}

/* popover */
#pv{position:absolute;z-index:80;width:392px;max-width:calc(100vw - 28px);background:var(--bg-raise);
  border:1px solid var(--rule);border-radius:9px;box-shadow:var(--pop-shadow);padding:15px 18px 13px;
  opacity:0;transform:translateY(5px);transition:opacity .13s ease,transform .13s ease;pointer-events:none;visibility:hidden}
#pv.show{opacity:1;transform:none;pointer-events:auto;visibility:visible}
#pv::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;border-radius:9px 9px 0 0;background:var(--hue,var(--ink-3))}
#pv.rk{--hue:var(--rk)}#pv.mc{--hue:var(--mc)}#pv.st{--hue:var(--st)}#pv.tr{--hue:var(--tr)}#pv.adv{--hue:var(--adv)}
#pv .pv-label{font-family:var(--sans);font-size:.65rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--hue,var(--ink-3));margin:2px 0 7px}
#pv .pv-img{float:right;width:92px;margin:2px 0 8px 14px}
#pv h4{margin:0 0 7px;font-size:1.08rem;line-height:1.25}
#pv p{font-size:.88rem;line-height:1.55;color:var(--ink-2);margin:0 0 10px}
#pv .pv-go{display:inline-block;font-family:var(--sans);font-size:.74rem;font-weight:600;color:var(--hue,var(--ink-2));text-decoration:none;border-top:1px solid var(--rule-soft);padding-top:8px;width:100%}
#pv .pv-go:hover{text-decoration:underline}

/* responsive: sidenotes fold inline */
@media (max-width:1179px){
  .article-wrap{padding-right:0}
  .sn-num{cursor:pointer;color:var(--tr);padding:2px 6px;margin:0 -2px;border-radius:5px;background:color-mix(in srgb,var(--tr) 12%,transparent)}
  .sn-body{float:none;display:none;width:auto;margin:10px 0 14px;padding:11px 14px;
    background:var(--bg-raise);border:1px solid var(--rule-soft);border-radius:6px}
  .sn.open .sn-body{display:block}
  figure.photo figcaption{position:static;width:auto;margin-top:9px}
}
/* responsive: rail folds into top bar */
@media (max-width:919px){
  .page{display:block;padding:26px 20px 0}
  .rail{display:none}
  .m-toc{display:block;position:relative}
  .m-toc summary{list-style:none;cursor:pointer;font-family:var(--sans);font-size:.72rem;font-weight:600;
    letter-spacing:.09em;text-transform:uppercase;color:var(--ink-2);padding:5px 2px}
  .m-toc summary::-webkit-details-marker{display:none}
  .m-toc nav{position:absolute;left:0;top:calc(100% + 8px);min-width:230px;max-width:78vw;background:var(--bg-raise);
    border:1px solid var(--rule);border-radius:9px;box-shadow:var(--pop-shadow);padding:10px 6px;
    font-family:var(--sans);font-size:.85rem}
  .m-toc nav a{display:block;padding:6px 12px;color:var(--ink-2);text-decoration:none}
  .m-toc nav a.lvl3{padding-left:26px;font-size:.8rem}
  .m-toc nav a:hover{color:var(--ink)}
  article{max-width:100%}
  .pager{flex-direction:column}
  .pager a{max-width:100%}
  .pager .next{text-align:left}
}
@media (prefers-reduced-motion:reduce){#pv{transition:none}html{scroll-behavior:auto}}

:root{--serif:'Newsreader',Georgia,'Times New Roman',serif;--sans:'Inter',system-ui,sans-serif}
body{font-family:var(--serif);font-size:19px;line-height:1.62;font-optical-sizing:auto}
h1{font-family:var(--serif);font-weight:600;font-size:2.75rem;line-height:1.1;letter-spacing:-.012em;margin:0}
.subtitle{font-family:var(--serif);font-style:italic;font-weight:400;font-size:1.3rem;line-height:1.35;color:var(--ink-2);margin:12px 0 0}
h2{font-family:var(--serif);font-weight:600;font-size:1.72rem;line-height:1.22;letter-spacing:-.008em;margin:2.5em 0 .65em}
h3{font-family:var(--serif);font-weight:600;font-size:1.24rem;line-height:1.3;margin:2.1em 0 .55em}
h1+ .subtitle{margin-top:12px}
.headline{font-family:var(--serif);font-weight:500;font-style:italic;font-size:1.5rem;line-height:1.4}
.step-num{font-weight:700;color:var(--ink-3);margin-right:.35em}
.pg-title{font-family:var(--serif)}
#pv h4{font-family:var(--serif);font-weight:600}

/* site menu */
.site-menu{position:relative}
.site-menu summary{list-style:none;cursor:pointer;font-family:var(--sans);font-size:.72rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-2);padding:5px 2px}
.site-menu summary::-webkit-details-marker{display:none}
.site-menu summary:hover{color:var(--ink)}
/* page menu is a hamburger at every width — one identity across screens,
   reads distinctly from the in-page "On this page" jump (Ida, 2026-07-17) */
.site-menu summary{padding:4px 2px}
.site-menu summary .menu-ico{display:block;vertical-align:-3px}
.site-menu summary .menu-label{display:none}
.site-menu nav{position:absolute;left:0;top:calc(100% + 8px);min-width:220px;background:var(--bg-raise);border:1px solid var(--rule);border-radius:9px;box-shadow:var(--pop-shadow);padding:10px 6px;font-family:var(--sans);font-size:.85rem;z-index:60}
.site-menu nav a{display:block;padding:6px 12px;color:var(--ink-2);text-decoration:none}
.site-menu nav a:hover{color:var(--ink)}
.site-menu nav a.current{color:var(--ink);font-weight:600}@media (max-width:559px){.topbar .mark span{display:none}}

/* theme toggle switch (Ida, 2026-07-14: icons over words) */
.theme-btn{position:relative;width:52px;height:26px;flex:none;border-radius:13px;border:1px solid var(--rule);
  background:color-mix(in srgb,var(--ink) 5%,transparent);cursor:pointer;padding:0}
.theme-btn:hover{border-color:var(--ink-3)}
.theme-btn .tt-sun,.theme-btn .tt-moon{position:absolute;top:50%;transform:translateY(-50%);color:var(--ink-3)}
.theme-btn .tt-sun{left:7px}
.theme-btn .tt-moon{right:7px}
.theme-btn .tt-knob{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;
  background:var(--bg-raise);border:1px solid var(--rule);box-shadow:0 1px 3px rgba(0,0,0,.18);
  transition:transform .18s ease}
[data-theme=dark] .theme-btn .tt-knob{transform:translateX(26px)}
[data-theme=dark] .theme-btn .tt-moon{color:var(--ink)}
html:not([data-theme=dark]) .theme-btn .tt-sun{color:var(--ink)}
@media (prefers-reduced-motion:reduce){.theme-btn .tt-knob{transition:none}}

/* email form (About) */
#feedbackForm{margin:1.2em 0 2em}
#feedbackForm label{font-family:var(--sans);font-size:.86rem;color:var(--ink-2);display:block;margin-bottom:10px}
#feedbackForm .input-group{display:flex;gap:10px;max-width:420px}
#feedbackForm input[type=email]{flex:1;font-family:var(--sans);font-size:.9rem;color:var(--ink);
  background:var(--bg-raise);border:1px solid var(--rule);border-radius:4px;padding:8px 12px}
#feedbackForm input[type=email]:focus{outline:none;border-color:var(--ink-3)}
#feedbackForm button{font-family:var(--sans);font-size:.74rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;
  color:var(--ink-2);background:none;border:1px solid var(--rule);border-radius:4px;padding:8px 14px;cursor:pointer}
#feedbackForm button:hover{color:var(--ink);border-color:var(--ink-3)}
#feedbackForm .is-hidden{display:none}
#input-success{font-family:var(--sans);font-size:.86rem;color:var(--ink-2)}

/* white-stroke artwork (Patterns_19/20/21): drawn in white lines, so the
   filter runs opposite to the dark-line illustrations */
.illo.white-stroke img{filter:invert(.88) hue-rotate(180deg)}
[data-theme=dark] .illo.white-stroke img{filter:none}
#pv .pv-img img[src*="Patterns_19"],#pv .pv-img img[src*="Patterns_20"],#pv .pv-img img[src*="Patterns_21"]{filter:invert(.88) hue-rotate(180deg)}
[data-theme=dark] #pv .pv-img img[src*="Patterns_19"],[data-theme=dark] #pv .pv-img img[src*="Patterns_20"],[data-theme=dark] #pv .pv-img img[src*="Patterns_21"]{filter:none}