:root{--bg-canvas:#13261d;--bg-surface:#203b2d;--text-primary:#efe6d2;--text-muted:#c9c1ae;--accent-primary:#b8923a;--accent-light:#dcb862;--border-subtle:#718071;--ink:#13261d;--shadow:#0a1510;--radius:20px;--card-radius:14px;--wrap:1200px;--read:70ch;--pad:clamp(1rem,3vw,3rem);--serif:Georgia,"Times New Roman",serif;--sans:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:1.0625rem/1.65 var(--sans);overflow-wrap:anywhere}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.2;margin:0 0 .6em;font-weight:700;hyphens:auto;overflow-wrap:anywhere}
h1{font-size:clamp(2rem,5vw,3.4rem)}h2{font-size:clamp(1.5rem,3.2vw,2.3rem)}h3{font-size:clamp(1.12rem,2vw,1.35rem)}
p,li{hyphens:auto}p{margin:0 0 1em}
a{color:var(--accent-light);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
img{max-width:100%;height:auto;display:block}
:focus-visible{outline:3px solid #f3d27a;outline-offset:3px}
.brass :focus-visible{outline-color:var(--ink)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent-primary);color:var(--ink);padding:.7rem 1rem;font-weight:700;z-index:100;border-radius:8px}
.skip:focus{left:1rem;top:1rem}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}
.read{max-width:var(--read)}
.muted{color:var(--text-muted)}
.kicker{display:inline-block;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--accent-light);margin-bottom:.6rem}
.brass .kicker{color:var(--ink)}
/* header */
.site-head{position:relative;margin:10px clamp(.5rem,2vw,1.5rem) 0}
.bar{max-width:1260px;margin:0 auto;display:flex;align-items:center;gap:1rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:999px;padding:8px 12px 8px 18px;position:relative}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--text-primary);font-family:var(--serif);font-weight:700;font-size:1.08rem;margin-right:auto;min-height:44px;min-width:0}
.brand svg{flex:none}
.brand small{font-family:var(--sans);font-weight:400;color:var(--text-muted);font-size:.8rem}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.nav a{display:flex;align-items:center;min-height:44px;padding:0 .62rem;border-radius:999px;color:var(--text-primary);text-decoration:none;font-size:.9rem;white-space:nowrap}
.nav a:hover{background:#2c4c3b}
.nav a[aria-current="page"]{background:var(--accent-primary);color:var(--ink);font-weight:700}
.nav .nav-cta{display:none}
.dots{display:none;width:44px;height:44px;border-radius:50%;border:1px solid var(--border-subtle);background:var(--bg-canvas);color:var(--text-primary);cursor:pointer;align-items:center;justify-content:center}
@media (max-width:1100px){
.dots{display:inline-flex}
.nav{display:none;position:absolute;right:0;top:calc(100% + 8px);width:min(300px,calc(100vw - 1.5rem));background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius);padding:.5rem;z-index:60}
.nav.open{display:block}
.nav ul{flex-direction:column}
.nav a{border-radius:12px;padding:0 .9rem;font-size:1rem}
.nav .nav-cta{display:block;margin-top:.4rem}
.nav .nav-cta a{background:var(--accent-primary);color:var(--ink);font-weight:700;border:2px solid var(--ink);box-shadow:4px 4px 0 var(--shadow);white-space:normal;justify-content:center;text-align:center}
}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.7rem 1.3rem;background:var(--accent-primary);color:var(--ink);font:700 1rem/1.2 var(--sans);text-decoration:none;border:2px solid var(--ink);border-radius:6px;box-shadow:4px 4px 0 var(--shadow);transition:transform .12s ease,box-shadow .12s ease;cursor:pointer;text-align:center}
.btn:hover{transform:translate(4px,4px);box-shadow:0 0 0 var(--shadow);text-decoration:none}
.btn.ghost{background:var(--text-primary)}
.actions{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1.4rem;align-items:center}
/* bands */
.band{padding:clamp(2.5rem,6vw,5rem) 0}
.band.alt{background:var(--bg-surface)}
.band.brass{background:var(--accent-primary);color:var(--ink)}
.brass a{color:var(--ink);font-weight:600}
.brass .muted{color:#26301f}
.band-head{max-width:var(--read);margin-bottom:2rem}
/* hero */
.hero{padding:clamp(2rem,6vw,4.5rem) 0}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(1.5rem,4vw,3rem);align-items:center}
.hero-grid>*{min-width:0}
.lede{font-size:clamp(1.05rem,1.6vw,1.22rem);color:var(--text-muted);max-width:60ch}
.hero-art{margin:0}
.art-stack{position:relative;aspect-ratio:1/1;max-width:480px;margin:0 auto}
.art-stack svg{position:absolute;filter:drop-shadow(6px 6px 0 var(--shadow))}
.art-grid{top:0;left:0;width:60%}
.art-logic{top:20%;right:0;width:54%}
.art-spatial{bottom:0;left:16%;width:50%}
.hero-art figcaption{font-size:.88rem;color:var(--text-muted);margin-top:1rem;max-width:480px;margin-inline:auto}
.page-hero{padding:clamp(2rem,5vw,4rem) 0 clamp(1.5rem,4vw,3rem)}
/* rows */
.rows{list-style:none;margin:0;padding:0;border-top:1px solid var(--border-subtle)}
.row{display:grid;grid-template-columns:52px 1fr;gap:1rem;padding:1.15rem 0;border-bottom:1px solid var(--border-subtle)}
.row>*{min-width:0}
.row h3{margin-bottom:.3em}
.row p{margin-bottom:.4em}
.brass .rows,.brass .row{border-color:rgba(19,38,29,.45)}
.ico{width:48px;height:48px;border-radius:12px;background:var(--accent-primary);color:var(--ink);display:grid;place-items:center;font:700 1.25rem/1 var(--serif)}
.brass .ico{background:var(--ink);color:var(--accent-light)}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:clamp(1.5rem,4vw,3rem)}
.split>*{min-width:0}
.diff{display:flex;flex-wrap:wrap;gap:.35rem;list-style:none;padding:0;margin:.4rem 0}
.diff li{font-size:.8rem;padding:.15rem .65rem;border:1px solid var(--border-subtle);border-radius:999px;color:var(--text-muted)}
.diff li.on{background:var(--accent-primary);color:var(--ink);border-color:var(--accent-primary);font-weight:700}
.brass .diff li{border-color:var(--ink);color:var(--ink)}
.brass .diff li.on{background:var(--ink);color:var(--accent-light)}
/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1px;background:var(--border-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius);overflow:hidden;margin:1.5rem 0}
.stat{background:var(--bg-canvas);padding:1rem 1.2rem;min-width:0}
.alt .stat{background:var(--bg-surface)}
.stat b{display:block;font:700 1.45rem/1.2 var(--serif);color:var(--accent-light)}
.stat span{font-size:.9rem;color:var(--text-muted)}
.brass .stats{background:var(--ink);border-color:var(--ink)}
.brass .stat{background:var(--accent-primary)}
.brass .stat b,.brass .stat span{color:var(--ink)}
/* panels, tabs, disclosures */
.panel{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius);padding:clamp(1rem,3vw,2rem);margin:1.5rem 0;color:var(--text-primary)}
.alt .panel{background:var(--bg-canvas)}
.brass .panel{background:var(--ink)}
.brass .panel a{color:var(--accent-light)}
.panel>*:last-child{margin-bottom:0}
.tablist{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1rem}
.tablist button{min-height:44px;padding:.5rem 1rem;background:transparent;color:inherit;border:2px solid currentColor;border-radius:999px;font:600 .95rem var(--sans);cursor:pointer}
.tablist button[aria-selected="true"]{background:var(--ink);color:var(--accent-light);border-color:var(--ink)}
.band:not(.brass) .tablist button[aria-selected="true"]{background:var(--accent-primary);color:var(--ink);border-color:var(--accent-primary)}
.tabpanel{margin-top:1rem}
details{border:1px solid var(--border-subtle);border-radius:var(--radius);margin:.6rem 0;background:var(--bg-surface)}
.alt details{background:var(--bg-canvas)}
.brass details{background:var(--ink);color:var(--text-primary);border-color:var(--ink)}
.brass details a{color:var(--accent-light)}
summary{cursor:pointer;padding:.75rem 1.1rem;min-height:44px;font-weight:600;list-style:none;display:flex;align-items:center;gap:.7rem}
summary::-webkit-details-marker{display:none}
summary::before{content:"+";flex:none;width:26px;height:26px;border-radius:50%;background:var(--accent-primary);color:var(--ink);display:grid;place-items:center;font-weight:700}
details[open] summary::before{content:"\2212"}
details>div{padding:0 1.1rem 1rem}
/* figures */
.fig{margin:1.5rem 0}
.fig img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);background:var(--bg-surface);border:1px solid var(--border-subtle)}
.fig.wide img{aspect-ratio:16/9}
.fig figcaption{font-size:.9rem;color:var(--text-muted);margin-top:.6rem}
.brass .fig figcaption{color:var(--ink)}
.table-wrap{overflow-x:auto;border:1px solid var(--border-subtle);border-radius:var(--radius);margin:1.5rem 0}
table{border-collapse:collapse;width:100%;min-width:520px}
th,td{text-align:left;padding:.7rem 1rem;border-bottom:1px solid var(--border-subtle);vertical-align:top}
th{font-family:var(--serif);background:var(--bg-surface)}
ol.steps,ul.plain{padding-left:1.3rem}
ol.steps li,ul.plain li{margin-bottom:.5rem}
/* form */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
.field{display:flex;flex-direction:column;gap:.35rem;min-width:0}
.field.full{grid-column:1/-1}
label{font-weight:600}
input,select,textarea{font:inherit;color:var(--text-primary);background:var(--bg-canvas);border:1px solid var(--border-subtle);border-radius:12px;padding:.65rem .8rem;min-height:44px;width:100%}
textarea{min-height:150px;resize:vertical}
.err{color:#ffc2ad;font-size:.9rem;min-height:1.2em}
[aria-invalid="true"]{border-color:#ffc2ad}
.status{font-weight:600;margin-top:1rem;min-height:1.4em}
/* footer */
.site-foot{border-top:1px solid var(--border-subtle);padding:clamp(2rem,4vw,3rem) 0;background:var(--bg-canvas)}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2rem}
.foot-grid>*{min-width:0}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li a{display:inline-flex;align-items:center;min-height:44px}
.site-foot h2{font-size:1.1rem}
.fine{font-size:.88rem;color:var(--text-muted);margin-top:1.5rem;border-top:1px solid var(--border-subtle);padding-top:1rem}
@media (max-width:1024px){.hero-grid{grid-template-columns:1fr}.art-stack{max-width:420px}}
@media (min-width:481px) and (max-width:768px){.band-head{margin-bottom:1.5rem}.art-stack{max-width:380px}}
@media (max-width:480px){body{font-size:1rem}.bar{padding:6px 8px 6px 12px}.brand small{display:none}.row{grid-template-columns:40px 1fr;gap:.75rem}.ico{width:40px;height:40px;font-size:1.05rem}.actions .btn{width:100%}.art-stack{max-width:300px}}
@media (min-width:1025px){.wrap{padding:0 clamp(1.5rem,3vw,3rem)}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}