/* Start page (index.html) and method article (method.html). Same tokens, fonts and controls as the
   explorer (style.css); these pages scroll like a normal document. */
html,body{height:auto}
body.doc{min-height:100vh;display:flex;flex-direction:column}
.top{display:flex;align-items:center;gap:20px;padding:0 24px;height:58px;background:var(--sheet);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:4}
.top .logo{padding:0;border:0;height:auto}
.top{height:76px}
.top .logo-img{height:62px}
.top .logo-name{font-size:1.3rem}
.top nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.top nav a{font-size:.88rem;color:inherit;text-decoration:none;padding:6px 12px;border:1px solid transparent;border-radius:5px}
.top nav a:hover{border-color:var(--ink)}
.top nav a[aria-current="page"]{background:var(--ink);color:var(--sheet)}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}
.kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
a:focus-visible{outline:2px solid var(--probe);outline-offset:2px}

/* hero */
.hero{padding:56px 0 40px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center}
.hero h1{font-family:var(--display);font-weight:700;font-size:clamp(2.2rem,4.6vw,3.6rem);line-height:1.02;letter-spacing:-.01em;margin:14px 0 18px;text-wrap:balance}
.hero .project{font-family:var(--display);font-weight:500;font-size:1.05rem;border-left:3px solid var(--probe);padding-left:10px;margin-top:14px}
.lead{font-size:1.12rem;line-height:1.55;color:var(--ink);max-width:52ch}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.btn{font-family:var(--body);font-size:.95rem;font-weight:500;padding:10px 18px;border:1px solid var(--ink);border-radius:5px;text-decoration:none;color:var(--ink);background:transparent;transition:transform .15s ease,background-color .15s ease}
.btn.solid{background:var(--ink);color:var(--sheet)}
.btn:hover{transform:translateY(-2px)}
.stripes{margin:0;background:var(--sheet);border:1px solid var(--rule);border-radius:8px;padding:16px 16px 12px}
.stripes h2{margin-bottom:10px}
#stripes{width:100%;height:230px;display:block;border-radius:3px;cursor:crosshair}
.stripes figcaption{display:flex;justify-content:space-between;gap:12px;font-family:var(--mono);font-size:.72rem;color:var(--ink-2);margin-top:8px}
.stripes .read{min-height:1.5em;font-family:var(--mono);font-size:.8rem;margin-top:8px}

/* fact tiles */
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:8px;overflow:hidden;margin:8px 0 56px}
.fact-tile{background:var(--sheet);padding:20px 22px;display:flex;flex-direction:column;gap:6px}
.fact-tile b{font-family:var(--display);font-weight:700;font-size:2.1rem;line-height:1;font-variant-numeric:tabular-nums}
.fact-tile span{font-size:.9rem;color:var(--ink-2)}

/* portals */
.section-head{display:flex;align-items:baseline;gap:16px;margin-bottom:18px}
.section-head h2{font-family:var(--display);font-weight:700;font-size:1.7rem;letter-spacing:0;text-transform:none;color:var(--ink);margin:0}
.portals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:64px}
.portal{position:relative;display:flex;flex-direction:column;gap:10px;padding:22px 22px 20px;background:var(--sheet);border:1px solid var(--rule);border-radius:8px;color:inherit;text-decoration:none;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;min-height:300px}
.portal:hover,.portal:focus-visible{transform:translateY(-4px);border-color:var(--ink);box-shadow:0 10px 0 -6px var(--ink)}
.portal .n{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-2)}
.portal h3{font-family:var(--display);font-weight:700;font-size:1.45rem;margin:0;line-height:1.1}
.portal p{font-size:.95rem;color:var(--ink-2)}
.portal .go{margin-top:auto;font-weight:600;font-size:.92rem;display:flex;align-items:center;gap:6px}
.portal .go::after{content:"→";transition:transform .2s ease}
.portal:hover .go::after{transform:translateX(5px)}
.portal svg{width:100%;height:96px;display:block;margin:4px 0 6px}
.portal.species{background:#e9f2f0;border-color:#c5d6d3}        /* the tint of the species portal */
.portal ul{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.portal li{font-family:var(--mono);font-size:.68rem;border:1px solid var(--rule);border-radius:99px;padding:2px 8px;color:var(--ink-2);background:var(--paper)}
.portal.species li{background:#f6fbfa;border-color:#c5d6d3}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]) .portal.species{background:#0d1d1e;border-color:#2b4244} :root:not([data-theme="light"]) .portal.species li{background:#132223;border-color:#2b4244} }

/* layers of the first card slide apart on hover */
.portal .layer{transition:transform .35s ease}
.portal:hover .l1{transform:translateY(-7px)} .portal:hover .l3{transform:translateY(7px)}
.portal .pulse{transform-origin:center;transform-box:fill-box}
.portal:hover .pulse{animation:pulse 1.2s ease-in-out infinite}
@keyframes pulse{50%{transform:scale(1.6);opacity:.5}}
.portal .drop{transition:transform .35s ease,opacity .35s ease}
.portal:hover .drop{transform:translateY(8px);opacity:.25}

/* team */
.team{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:40px;align-items:center;margin-bottom:72px}
.team-photo{position:relative;aspect-ratio:4/3;border:1px solid var(--rule);border-radius:8px;overflow:hidden;background:var(--sheet);display:grid;place-items:center}
.team-photo img.photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.team-photo img.mark{width:38%;opacity:.9;background:#fff;border-radius:10px;padding:10px}
.team h2{font-family:var(--display);font-weight:700;font-size:1.7rem;letter-spacing:0;text-transform:none;color:var(--ink);margin:6px 0 12px}
.team p{max-width:56ch}
.members{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px}
.members li{border-top:1px solid var(--rule);padding-top:8px;font-size:.95rem}
.members span{display:block;color:var(--ink-2);font-size:.82rem}

.foot{margin-top:auto;border-top:1px solid var(--rule);background:var(--sheet);padding:18px 0;font-size:.82rem;color:var(--ink-2)}
.foot a{color:inherit}

/* entrance: one short staggered rise */
.rise{opacity:0;transform:translateY(14px);animation:rise .6s ease forwards}
.rise.d1{animation-delay:.08s}.rise.d2{animation-delay:.16s}.rise.d3{animation-delay:.24s}.rise.d4{animation-delay:.32s}
@keyframes rise{to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){.rise{animation:none;opacity:1;transform:none}.portal,.btn,.portal *{transition:none!important;animation:none!important}}

/* method article */
.article-head{padding:44px 0 8px}
.article-head h1{font-family:var(--display);font-weight:700;font-size:clamp(2rem,4vw,3rem);line-height:1.05;margin:10px 0 14px}
.chosen{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:8px;overflow:hidden;margin:22px 0 8px}
.chosen div{background:var(--sheet);padding:16px 18px;display:flex;flex-direction:column;gap:4px}
.chosen .src{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2)}
.chosen b{font-family:var(--display);font-size:1.08rem;line-height:1.15}
.chosen .num{font-family:var(--mono);font-size:.84rem}
.chosen .why{font-size:.82rem;color:var(--ink-2)}
.funnel{font-family:var(--mono);font-size:.8rem;color:var(--ink-2);margin-top:10px}
.layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;padding:28px 0 72px;align-items:start}
.toc{position:sticky;top:78px;display:flex;flex-direction:column;gap:2px;font-size:.86rem;max-height:calc(100vh - 100px);overflow:auto}
.toc a{color:var(--ink-2);text-decoration:none;padding:4px 8px;border-left:2px solid var(--rule)}
.toc a.sub{padding-left:20px;font-size:.8rem}
.toc a:hover,.toc a.on{color:var(--ink);border-left-color:var(--ink)}
.prose{max-width:74ch;font-size:1.02rem;line-height:1.65}
.prose h1{display:none}
.prose h2{font-family:var(--display);font-weight:700;font-size:1.6rem;letter-spacing:0;text-transform:none;color:var(--ink);margin:44px 0 12px;scroll-margin-top:76px}
.prose h3{font-family:var(--display);font-weight:700;font-size:1.2rem;margin:32px 0 8px;scroll-margin-top:76px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px;padding-left:22px}
.prose li{margin-bottom:6px}
.prose a{color:inherit;text-underline-offset:3px}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--sheet);border:1px solid var(--rule);border-radius:3px;padding:0 4px}
.prose pre{background:var(--sheet);border:1px solid var(--rule);border-radius:6px;padding:12px 14px;overflow:auto;margin:0 0 14px}
.prose pre code{border:0;padding:0;background:none}
.prose figure{margin:20px 0 22px}
.prose figure img{width:100%;height:auto;display:block;border:1px solid var(--rule);border-radius:6px;background:#fff}
.prose figcaption{font-family:var(--mono);font-size:.74rem;color:var(--ink-2);margin-top:6px}
.prose .tablewrap{margin:0 0 18px;border:1px solid var(--rule);border-radius:6px;background:var(--sheet)}
.prose table{border-collapse:collapse;width:100%;font-size:.86rem;line-height:1.45}
.prose th,.prose td{text-align:left;vertical-align:top;padding:8px 10px;border-bottom:1px solid var(--rule)}
.prose tr:last-child td{border-bottom:0}
.prose th{font-family:var(--mono);font-weight:500;font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2)}

@media (max-width:900px){
  .hero,.team,.layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .hero{padding-top:32px}
  .facts,.portals{grid-template-columns:minmax(0,1fr)}
  .chosen{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc{position:static;max-height:none;flex-direction:row;flex-wrap:wrap}
  .toc a.sub{display:none}
  .top nav a{padding:6px 8px}
  .portal{min-height:0}
}
@media (max-width:520px){.top{padding:0 12px;gap:8px}.top .logo-name{display:none}.top nav a{padding:6px 7px;font-size:.84rem}.section-head{flex-direction:column;gap:4px}}
/* Start page: one big button into the explorer. */
.top nav{align-items:center}
.top nav a.start{background:var(--ink);color:var(--sheet);text-transform:uppercase;letter-spacing:.06em;font-weight:600;font-size:.95rem;padding:12px 22px;border-radius:7px}
.top nav a.start:hover{background:#0e6f6a;border-color:#0e6f6a}
@media (max-width:520px){.top nav a.start{padding:8px 12px;font-size:.78rem}}
.team .thanks{margin-top:14px;font-size:.9rem;color:var(--ink-2)}