:root{--bg-canvas:#f3f0fa;--bg-surface:#ffffff;--bg-surface-hover:#faf7fd;--text-primary:#334155;--text-muted:#56506a;--accent-primary:#663c78;--accent-secondary:#9a6a3a;--border-subtle:#ddd3ea;--lilac:#e6ddf4;--ink:#2a1d33;--ease-kinetic:cubic-bezier(0.16,1,0.3,1);--shadow-elevation:0 12px 32px -4px rgba(51,30,70,.22);--glow-accent:0 0 24px -4px var(--accent-primary);--glass-backdrop:blur(16px) saturate(180%);--serif:Charter,"Bitstream Charter","Sitka Text",Cambria,Georgia,serif}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:1.0625rem/1.72 var(--serif);overflow-wrap:anywhere;hyphens:auto}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);line-height:1.14;margin:0 0 .6em;overflow-wrap:anywhere;hyphens:auto}
h2{font-size:clamp(1.8rem,3.6vw,2.7rem)}h3{font-size:1.3rem}
p{margin:0 0 1.1em}
a{color:var(--accent-primary)}
img{max-width:100%;height:auto;display:block}
ul,ol{padding-left:1.3rem}
.wrap{max-width:1200px;margin:0 auto;padding:0 1.5rem}
.prose{max-width:70ch}
.center{margin:0 auto}
.label{display:block;font-variant:small-caps;letter-spacing:.08em;font-size:1.05rem;color:var(--accent-primary);margin-bottom:.45rem}
.muted{color:var(--text-muted)}
.skip{position:absolute;left:-999px;top:0;background:var(--accent-primary);color:#fff;padding:.6rem 1rem;z-index:50}
.skip:focus{left:1rem}
:focus-visible{outline:3px solid var(--accent-secondary);outline-offset:3px}
/* header */
.site-header{position:relative;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);z-index:20}
.head-top{display:flex;align-items:center;justify-content:space-between;padding-top:1rem;padding-bottom:.5rem}
.brand{display:flex;align-items:center;gap:.65rem;margin-right:auto;text-decoration:none;color:var(--ink);font-size:1.4rem;font-variant:small-caps;letter-spacing:.06em}
.brand-mark{width:2.3rem;height:2.3rem;border-radius:50%;background:var(--accent-primary);color:#fff;display:grid;place-items:center;font-size:1.15rem}
.menu-btn{display:none;width:2.7rem;height:2.7rem;border-radius:50%;border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--accent-primary);font-size:1.5rem;line-height:1;cursor:pointer}
.main-nav ul{list-style:none;margin:0 auto;max-width:1200px;padding:.35rem 1.5rem 1rem;display:flex;flex-wrap:wrap;justify-content:center;gap:.3rem 1.7rem}
.main-nav a{color:var(--text-primary);font-variant:small-caps;letter-spacing:.06em;font-size:1.08rem}
.main-nav a[aria-current="page"]{color:var(--accent-primary);background-size:100% 1px}
/* growing underline links */
.text-link,.main-nav a,.site-footer a,.inline a{background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;text-decoration:none;transition:background-size .45s var(--ease-kinetic),color .3s}
.text-link:hover,.main-nav a:hover,.site-footer a:hover,.inline a:hover,.text-link:focus-visible{background-size:100% 1px}
.text-link{color:var(--accent-primary);font:inherit;font-weight:700;border:0;padding:0 0 2px;cursor:pointer}
.text-link::after{content:" →"}
/* hero */
.hero{background:var(--lilac);padding:clamp(3.5rem,9vw,7.5rem) 0 clamp(6rem,11vw,9rem);clip-path:polygon(0 0,100% 0,100% calc(100% - 4rem),0 100%)}
.hero h1{font-size:clamp(2.8rem,8.6vw,7.2rem);letter-spacing:-.02em;max-width:13ch;margin-bottom:.35em}
.page-hero h1{font-size:clamp(2.3rem,5.6vw,4.6rem);max-width:20ch}
.lede{font-size:clamp(1.12rem,2vw,1.38rem);max-width:62ch;color:var(--ink)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:1.2rem 2.2rem;margin-top:2rem}
.btn-main{display:inline-block;background:var(--accent-primary);color:#fff;text-decoration:none;padding:1rem 1.8rem;font-variant:small-caps;letter-spacing:.08em;font-size:1.12rem;transition:transform .45s var(--ease-kinetic),box-shadow .45s var(--ease-kinetic)}
.btn-main:hover{transform:translateY(-5px) scale(1.015);box-shadow:var(--shadow-elevation),var(--glow-accent)}
/* chapters */
.chapter{position:relative;padding:4.5rem 0 6.5rem;background:var(--bg-canvas)}
.chapter.alt{background:var(--bg-surface)}
.edge-diag{clip-path:polygon(0 0,100% 0,100% calc(100% - 3.5rem),0 100%)}
.edge-curve{clip-path:ellipse(150% 100% at 50% 0)}
.ch-inner{position:relative;padding-left:5.2rem}
.ch-inner::before{content:"";position:absolute;left:calc(1.65rem - .5px);top:0;bottom:-6.5rem;width:1px;background:var(--accent-primary)}
.ch-num{position:absolute;left:0;top:0;width:3.3rem;height:3.3rem;border-radius:50%;background:var(--accent-primary);color:#fff;display:grid;place-items:center;font-size:1.1rem;letter-spacing:.04em;z-index:1}
/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin:2.2rem 0}
.specimen{display:flex;flex-direction:column;background:var(--bg-surface);border:1px solid var(--border-subtle);transition:transform .5s var(--ease-kinetic),box-shadow .5s var(--ease-kinetic),background .3s}
.chapter.alt .specimen{background:var(--bg-canvas)}
.specimen:hover{transform:translateY(-5px) scale(1.015);box-shadow:var(--shadow-elevation),var(--glow-accent)}
.specimen figure{margin:0;position:relative}
.specimen img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--lilac)}
.badge{position:absolute;left:1.1rem;bottom:0;transform:translateY(50%);border-radius:999px;padding:.28rem 1rem;color:#fff;background:var(--accent-primary);font-variant:small-caps;letter-spacing:.06em;font-size:.98rem;box-shadow:0 4px 12px rgba(42,29,51,.2)}
.b-sed{background:#8a5a2b}.b-ign{background:#9b2f3f}.b-min{background:#4f6b3a}.b-met{background:#5e4470}.b-model{background:#7a4f6d}
.specimen .body{padding:2rem 1.4rem 1.4rem}
.specimen p{color:var(--text-muted);margin-bottom:.7rem}
.banner{margin:2rem 0;position:relative}
.banner img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--lilac)}
.banner figcaption,.xsec figcaption{font-size:.93rem;color:var(--text-muted);font-style:italic;margin-top:.6rem}
.thumb{width:100%;aspect-ratio:1/1;object-fit:cover}
/* cross-section */
.xsec{margin:2rem 0;background:var(--bg-surface);border:1px solid var(--border-subtle);padding:1.2rem;max-width:760px}
.layer{display:flex;justify-content:space-between;gap:1rem;padding:.6rem 1rem;font-size:.97rem;color:#fff}
.layer span:last-child{font-variant:small-caps;letter-spacing:.05em}
.l1{background:#efe4cc;color:#3b2f1e}.l2{background:#cfae80;color:#2c1f10}.l3{background:#8a5a2b}.l4{background:#663c78}.l5{background:#3a2342}.l6{background:#9b2f3f}
/* disclosures & evidence */
details.def{background:var(--bg-surface);border-left:3px solid var(--accent-primary);padding:.8rem 1.1rem;margin:.8rem 0;max-width:70ch}
.chapter.alt details.def{background:var(--bg-canvas)}
details.def summary{cursor:pointer;font-variant:small-caps;letter-spacing:.05em;font-weight:700;color:var(--ink)}
details.def p{margin:.6rem 0 0}
.evidence{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.2rem;margin:2rem 0}
.ev{background:var(--bg-surface);border-top:3px solid var(--accent-primary);padding:1.2rem 1.3rem}
.chapter.alt .ev{background:var(--bg-canvas)}
.ev.hyp{border-top-color:var(--accent-secondary)}
.ev p:last-child{margin:0}
.table-wrap{overflow-x:auto;margin:2rem 0}
table{border-collapse:collapse;width:100%;min-width:580px;background:var(--bg-surface)}
th,td{text-align:left;padding:.75rem .9rem;border-bottom:1px solid var(--border-subtle);vertical-align:top}
th{font-variant:small-caps;letter-spacing:.05em;color:var(--accent-primary)}
.sources li{margin-bottom:.5rem}
/* about avatars */
.people{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin:2rem 0}
.person{background:var(--bg-surface);padding:1.4rem;border:1px solid var(--border-subtle)}
.avatar{width:4rem;height:4rem;border-radius:50%;background:var(--lilac);color:var(--accent-primary);display:grid;place-items:center;font-size:1.3rem;margin-bottom:.8rem;border:2px solid var(--accent-primary)}
/* enquiry sheet */
.sheet{background:var(--bg-surface);border:1px solid var(--border-subtle);padding:2rem;max-width:780px;margin-top:2rem}
.sheet-head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem;border-bottom:2px solid var(--accent-primary);padding-bottom:.6rem;margin-bottom:1rem}
.sheet label{display:block;font-variant:small-caps;letter-spacing:.05em;margin:1rem 0 .3rem;color:var(--ink)}
.sheet input,.sheet select,.sheet textarea{width:100%;font:inherit;padding:.7rem .8rem;border:1px solid #c9bcdc;background:var(--bg-canvas);color:var(--text-primary);border-radius:0}
.sheet textarea{min-height:9rem;resize:vertical}
.preview{white-space:pre-wrap;font-family:var(--serif);background:var(--bg-canvas);border:1px dashed #c9bcdc;padding:1rem;margin-top:1.5rem;font-size:.95rem;min-height:5rem}
.status{min-height:1.5em;color:var(--accent-primary);font-weight:700;margin-top:.8rem}
.legal h2{font-size:1.5rem;margin-top:2rem}
/* footer */
.site-footer{background:var(--ink);color:#ece6f5;padding:3.5rem 0 1.5rem}
.site-footer a{color:#e8d6f3}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:2rem}
.site-footer .label{color:#d4bde3}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:.4rem}
.foot-brand{font-size:1.4rem;font-variant:small-caps;letter-spacing:.06em;margin-bottom:.5rem}
.copy{border-top:1px solid rgba(236,230,245,.2);margin-top:2.5rem;padding-top:1.2rem;font-size:.92rem;color:#cfc4dc}
/* reveal */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease-kinetic),transform .7s var(--ease-kinetic)}
.js .reveal.reveal-visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}.js .reveal{opacity:1;transform:none}}
/* breakpoints */
@media (max-width:768px){.menu-btn{display:grid;place-items:center}.main-nav{position:absolute;left:0;right:0;top:100%;background:var(--bg-surface);border-bottom:2px solid var(--accent-primary);box-shadow:var(--shadow-elevation);max-height:0;overflow:hidden;transition:max-height .55s var(--ease-kinetic)}.main-nav.open{max-height:32rem}.main-nav ul{flex-direction:column;align-items:flex-start;padding:1rem 1.5rem 1.6rem}.main-nav a{font-size:1.2rem}}
@media (max-width:480px){body{font-size:1rem}.wrap{padding:0 1rem}.ch-inner{padding-left:3.5rem}.ch-num{width:2.6rem;height:2.6rem;font-size:.95rem}.ch-inner::before{left:calc(1.3rem - .5px)}.sheet{padding:1.2rem}.chapter{padding:3.5rem 0 5.5rem}}
@media (min-width:481px) and (max-width:768px){.ch-inner{padding-left:4.2rem}}
@media (min-width:769px) and (max-width:1024px){.grid{gap:1.5rem}}
@media (min-width:1025px){.chapter{padding:5.5rem 0 7.5rem}}