html.t-app, body.t-app { margin: 0; background: var(--paper); color: var(--ink); }
.t-app { font-family: "Instrument Sans Variable", "Segoe UI", system-ui, sans-serif; font-size: 17px; line-height: 1.55; --gutter: max(1rem, env(safe-area-inset-left)); --tap: 48px; }
.t-app *, .t-app *::before, .t-app *::after { box-sizing: border-box; }
.t-app h1, .t-app h2, .t-app h3 { text-wrap: balance; letter-spacing: -0.03em; line-height: 1.05; margin: 0; }
.t-app h1 { font-size: clamp(2.25rem, 1.2rem + 5.2vw, 4.25rem); font-weight: 650; letter-spacing: -0.04em; line-height: 1.02; }
.t-app h1 em, .t-app h2 em { font-family: "Newsreader Variable", Georgia, serif; font-style: italic; font-weight: 500; color: var(--accent); letter-spacing: -0.01em; }
.t-app h2 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.75rem); font-weight: 650; }
.t-app h3 { font-size: 1.2rem; font-weight: 650; letter-spacing: -0.01em; }
.t-app p { text-wrap: pretty; margin: 0; }
.t-app a { color: var(--accent-dark); }
.t-app :focus-visible { outline: 2.5px solid var(--focus); outline-offset: 3px; }
.t-app .skip { position: absolute; left: 0.5rem; top: -4rem; background: var(--ink); color: var(--paper); padding: 0.6rem 0.9rem; border-radius: 8px; z-index: 9; }
.t-app .skip:focus { top: 0.5rem; }
.t-app .wrap { max-width: 72rem; margin: 0 auto; padding: 0 var(--gutter); }
.t-app .top { border-bottom: 1px solid var(--line-soft); background: var(--paper); padding-top: env(safe-area-inset-top); }
.t-app .bar { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 1rem; }
.t-app .brand { display: inline-flex; align-items: center; gap: 0.55rem; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.02em; font-size: 1.08rem; }
.t-app .icon { width: 32px; height: 32px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; flex: 0 0 auto; }
.t-app .icon svg { width: 20px; height: 20px; }
.t-app .nav ul { list-style: none; margin: 0; padding: 0 0 0.4rem; display: flex; gap: 0.2rem; overflow-x: auto; scrollbar-width: none; }
.t-app .nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 0.75rem; border-radius: 10px; color: var(--ink); text-decoration: none; white-space: nowrap; font-weight: 550; font-size: 0.95rem; }
.t-app .nav a[aria-current="page"] { background: var(--sand); }
@media (min-width: 900px) { .t-app .top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(8px); }
  .t-app .top .wrap.row { display: flex; align-items: center; justify-content: space-between; } .t-app .nav ul { padding: 0; } }
.t-app .btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; min-height: var(--tap); padding: 0 1.2rem; border-radius: 12px; border: 0; background: var(--ink); color: var(--paper); font: inherit; font-weight: 650; text-decoration: none; cursor: pointer; }
.t-app .btn.accent { background: var(--accent); color: var(--on-accent); }
.t-app .btn.ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line); }
.t-app .btn:disabled { opacity: 0.45; cursor: not-allowed; }
.t-app main { display: block; }
.t-app .hero { padding: 2.2rem 0 1rem; }
.t-app .hero .sub { margin-top: 0.9rem; font-size: 1.12rem; color: var(--muted); max-width: 40rem; }
.t-app .kicker { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 650; font-size: 0.9rem; color: var(--muted); margin-bottom: 0.9rem; }
.t-app .tool { margin-top: 1.4rem; background: var(--sand); border-radius: 28px; padding: clamp(0.9rem, 3vw, 1.6rem); }
.t-app .drop { display: grid; place-items: center; text-align: center; gap: 0.5rem; min-height: 11rem; padding: 1.2rem; border: 2px dashed color-mix(in srgb, var(--ink) 30%, transparent); border-radius: 20px; background: var(--card); cursor: pointer; }
.t-app .drop.over { border-color: var(--accent); background: var(--glow); }
.t-app .drop strong { font-size: 1.2rem; }
.t-app .drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.t-app .drop .pick { text-decoration: underline; color: var(--accent-dark); font-weight: 650; }
.t-app .controls { display: flex; flex-wrap: wrap; gap: 0.7rem 1rem; align-items: end; margin-top: 1rem; }
.t-app .controls label { display: grid; gap: 0.25rem; font-weight: 600; font-size: 0.92rem; }
.t-app select, .t-app textarea { font: inherit; font-size: 16px; color: var(--ink); background: var(--field); border: 1.5px solid var(--line); border-radius: 12px; }
.t-app select { min-height: var(--tap); padding: 0 0.7rem; }
.t-app .check { display: flex !important; grid-auto-flow: column; align-items: center; gap: 0.45rem !important; min-height: var(--tap); }
.t-app .check input { width: 1.15rem; height: 1.15rem; }
.t-app .meta { margin-top: 0.6rem; font-size: 0.92rem; color: var(--muted); min-height: 1.4em; }
.t-app .status { margin-top: 0.8rem; font-weight: 600; min-height: 1.5em; }
.t-app progress { width: 100%; height: 10px; margin-top: 0.5rem; accent-color: var(--accent); }
.t-app textarea { width: 100%; min-height: 14rem; margin-top: 0.8rem; padding: 0.9rem; font-family: "Newsreader Variable", Georgia, serif; font-size: 1.1rem; line-height: 1.5; resize: vertical; }
.t-app .actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.7rem; }
.t-app .fine { font-size: 0.9rem; color: var(--muted); }
.t-app .facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.6rem; margin: 1.6rem 0 0; padding: 0; list-style: none; }
.t-app .facts li { background: var(--card); border: 1px solid var(--line-soft); border-radius: 16px; padding: 0.9rem 1rem; }
.t-app .facts b { display: block; font-size: 1.35rem; letter-spacing: -0.02em; }
@media (min-width: 760px) { .t-app .facts { grid-template-columns: repeat(4, 1fr); } }
.t-app .section { padding: 3rem 0 0; }
.t-app .section > .wrap > p.lede, .t-app .lede { margin-top: 0.7rem; color: var(--muted); font-size: 1.08rem; max-width: 44rem; }
.t-app .cards { display: grid; gap: 0.8rem; margin-top: 1.2rem; }
@media (min-width: 760px) { .t-app .cards { grid-template-columns: repeat(3, 1fr); } }
.t-app .card { background: var(--card); border: 1px solid var(--line-soft); border-radius: 20px; padding: 1.1rem 1.2rem; }
.t-app .card p { margin-top: 0.4rem; color: var(--muted); }
.t-app .card .n { display: inline-grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 700; margin-bottom: 0.6rem; }
.t-app .deep { background: var(--deep); color: var(--on-deep); border-radius: 28px; padding: clamp(1.4rem, 4vw, 2.6rem); margin-top: 3rem; }
.t-app .deep h2 em { color: var(--accent-on-deep); }
.t-app .deep p { color: var(--on-deep-muted); margin-top: 0.7rem; max-width: 46rem; }
.t-app .deep a { color: var(--accent-on-deep); }
.t-app .prose { max-width: 46rem; }
.t-app .prose > * + * { margin-top: 0.9rem; }
.t-app .prose h2 { margin-top: 2rem; font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem); }
.t-app .prose h3 { margin-top: 1.4rem; }
.t-app .prose ul, .t-app .prose ol { padding-left: 1.3rem; }
.t-app .prose li + li { margin-top: 0.35rem; }
.t-app .page-head { padding: 2rem 0 0.5rem; }
.t-app .crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.3rem; padding: 0; margin: 0 0 1rem; font-size: 0.92rem; }
.t-app .crumbs li + li::before { content: "/"; margin-right: 0.3rem; color: var(--muted); }
.t-app .crumbs a { display: inline-flex; align-items: center; min-height: 32px; }
.t-app details { border-bottom: 1px solid var(--line); padding: 0.4rem 0; }
.t-app summary { cursor: pointer; font-weight: 650; min-height: var(--tap); display: flex; align-items: center; }
.t-app details p { padding: 0 0 0.8rem; color: var(--muted); }
.t-app .table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--card); margin-top: 1rem; }
.t-app table { border-collapse: collapse; width: 100%; }
.t-app th, .t-app td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.t-app caption { text-align: left; padding: 0.7rem 0.9rem; font-weight: 650; }
.t-app .fig { margin: 1.2rem 0; }
.t-app .fig img { width: 100%; height: auto; border-radius: 20px; display: block; }
.t-app .fig figcaption { font-size: 0.9rem; color: var(--muted); margin-top: 0.4rem; }
.t-app .closing { background: var(--sand); border-radius: 28px; padding: 2rem 1.4rem; text-align: center; margin-top: 3rem; }
.t-app .closing p { margin: 0.6rem auto 1rem; color: var(--muted); max-width: 34rem; }
.t-app .site-footer { margin-top: 4rem; background: var(--deep); color: var(--on-deep); padding: 2.2rem 0 calc(2rem + env(safe-area-inset-bottom)); }
.t-app .site-footer a { color: var(--on-deep); }
.t-app .site-footer .fine { color: var(--on-deep-muted); max-width: 46rem; margin-top: 0.5rem; }
.t-app .site-footer .links { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; }
.t-app .site-footer .links a { display: inline-flex; align-items: center; min-height: 44px; }
.t-app .notice { background: var(--mark-tint); color: var(--ink); border-radius: 14px; padding: 0.8rem 1rem; font-size: 0.95rem; margin-top: 1rem; }
html:not(.js) .t-app .needs-js { display: none; }
html.js .t-app .no-js { display: none; }
dialog.gate {
  border: 0;
  border-radius: 20px;
  padding: 1.25rem 1.25rem 1.35rem;
  background: var(--card);
  color: var(--ink);
  width: min(32rem, calc(100vw - 2rem));
  max-height: min(40rem, calc(100dvh - 2rem));
  overflow: auto;
}
dialog.gate:modal { overscroll-behavior: contain; }
dialog.gate::backdrop {
  background: color-mix(in srgb, var(--ink) 46%, transparent);
  overflow: hidden;
  overscroll-behavior: contain;
}
.gate-form { display: grid; gap: 0.85rem; margin-top: 0.85rem; }
.gate-form .field { display: grid; gap: 0.25rem; }
.gate-form .field > span { font-weight: 650; }
.gate-form input, .gate-form textarea {
  font: inherit;
  font-size: max(1rem, 1em);
  min-height: 48px;
  padding: 0.65rem 0.75rem;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--field);
  color: var(--ink);
  width: 100%;
}
.gate-form textarea { min-height: 4.5rem; resize: vertical; }
.gate-form input:user-invalid, .gate-form textarea:user-invalid { border-color: var(--accent); }
.gate-form .hint { color: var(--muted); font-size: 0.9rem; font-weight: 450; }
.gate-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; position: sticky; bottom: 0; background: var(--card); padding-top: 0.7rem; }
.req { color: var(--accent); }
@media (prefers-reduced-motion: reduce) { .t-app * { transition: none !important; } }
@media (hover: hover) { .t-app .btn:hover:not(:disabled) { filter: brightness(1.12); } .t-app .nav a:hover { background: var(--line-soft); } }

/* LLM discoverability pages */
.t-app pre.machine {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  background: var(--surface, var(--paper, #fff));
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.88rem;
  line-height: 1.45;
  white-space: pre;
}
.t-app .identity .palette {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
  gap: 0.75rem;
  margin-top: 0.8rem;
}
.t-app .identity .palette li {
  margin: 0;
  background: var(--surface, var(--paper, #fff));
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.t-app .identity .palette .chip {
  display: block;
  width: 100%;
  height: 3rem;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
}
.t-app .identity .palette p {
  margin: 0;
  padding: 0.55rem 0.7rem 0.7rem;
  font-size: 0.9rem;
}
.t-app .identity .specimen {
  margin-top: 0.6rem;
  font-size: 1.25rem;
  line-height: 1.3;
}
.t-app .identity .wordmark-demo {
  margin-top: 0.8rem;
}
.t-app .identity .wordmark-demo .brand {
  font-size: 1.6rem;
}