:root {
  --tgi-paper: #f5f5ef;
  --tgi-panel: #ffffff;
  --tgi-ink: #17201b;
  --tgi-muted: #505a54;
  --tgi-line: #aeb7b0;
  --tgi-green: #0b5d4b;
  --tgi-green-dark: #073d32;
  --tgi-lime: #d7f171;
  --tgi-cobalt: #315cff;
  --tgi-soft: #e7ece7;
  --tgi-width: 1210px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--tgi-ink);
  background: var(--tgi-paper);
  font: 16px/1.62 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--tgi-green-dark); text-decoration-thickness: .08em; text-underline-offset: .2em; }
a:hover { color: #173fbe; }
:focus-visible { outline: 3px solid var(--tgi-cobalt); outline-offset: 3px; }
.tgi-skip { position: absolute; left: -9999px; top: .5rem; z-index: 50; padding: .7rem 1rem; color: #fff; background: var(--tgi-ink); }
.tgi-skip:focus { left: .5rem; }
.tgi-shell { width: min(calc(100% - 2rem), var(--tgi-width)); margin-inline: auto; }

.tgi-site-header { border-bottom: 2px solid var(--tgi-ink); background: var(--tgi-paper); }
.tgi-header-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.tgi-brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--tgi-ink); text-decoration: none; font-weight: 900; letter-spacing: -.03em; }
.tgi-brand img { width: 42px; height: 42px; }
.tgi-brand span { display: grid; line-height: 1.05; }
.tgi-brand small { margin-top: .28rem; color: var(--tgi-muted); font: 700 .65rem/1.1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; }
.tgi-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .4rem 1rem; }
.tgi-nav a { color: var(--tgi-ink); text-decoration: none; font-size: .84rem; font-weight: 800; }
.tgi-nav a:hover { color: var(--tgi-green); }

.tgi-hero { border-bottom: 2px solid var(--tgi-ink); padding: clamp(3.2rem, 8vw, 7rem) 0 3rem; }
.tgi-hero-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: clamp(2rem, 7vw, 6rem); align-items: end; }
.tgi-code, .tgi-label { color: var(--tgi-green); font: 850 .73rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .11em; text-transform: uppercase; }
.tgi-hero h1 { max-width: 16ch; margin: .75rem 0 1.3rem; font-size: clamp(2.3rem, 5vw, 4.5rem); line-height: 1.02; letter-spacing: -.045em; }
.tgi-hero > .tgi-shell:not(.tgi-hero-grid) > h1 { font-size: clamp(2.1rem, 4vw, 3.8rem); }
.tgi-answer { max-width: 76ch; margin: 0; font-size: clamp(1.02rem, 1.8vw, 1.23rem); }
.tgi-meta { display: flex; flex-wrap: wrap; gap: .3rem 1rem; margin-top: 1.25rem; color: var(--tgi-muted); font-size: .78rem; }
.tgi-gap-board { border: 2px solid var(--tgi-ink); background: var(--tgi-panel); }
.tgi-gap-board strong { display: block; padding: .75rem .9rem; background: var(--tgi-ink); color: #fff; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; }
.tgi-gap-board a { display: grid; grid-template-columns: 32px 1fr; gap: .55rem; padding: .7rem .9rem; color: var(--tgi-ink); text-decoration: none; border-top: 1px solid var(--tgi-line); }
.tgi-gap-board a:first-of-type { border-top: 0; }
.tgi-gap-board b { color: var(--tgi-green); font-family: ui-monospace, monospace; }
.tgi-layout { display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: clamp(2.2rem, 5vw, 5rem); align-items: start; padding: 4.5rem 0 5.5rem; }
.tgi-article { min-width: 0; }
.tgi-article section { margin-bottom: 5rem; scroll-margin-top: 1.5rem; }
.tgi-article h2 { margin: .45rem 0 1.1rem; font-size: clamp(2rem, 4.4vw, 3.8rem); line-height: 1; letter-spacing: -.045em; }
.tgi-article h3 { margin: 1.35rem 0 .5rem; font-size: 1.18rem; line-height: 1.25; }
.tgi-lead { max-width: 76ch; color: #3e4943; font-size: 1.08rem; }
.tgi-section-head { display: grid; grid-template-columns: 86px minmax(0, 1fr); gap: 1rem; align-items: start; border-top: 2px solid var(--tgi-ink); padding-top: .65rem; }
.tgi-section-no { color: var(--tgi-cobalt); font: 850 .76rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; }
.tgi-toc { position: sticky; top: 1rem; border-top: 8px solid var(--tgi-lime); background: var(--tgi-ink); padding: 1rem; }
.tgi-toc strong { display: block; margin-bottom: .5rem; color: #fff; font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; }
.tgi-toc a { display: block; padding: .38rem 0; color: #e7eee9; text-decoration: none; font-size: .81rem; border-bottom: 1px solid #4c5650; }
.tgi-toc a:hover { color: var(--tgi-lime); }

.tgi-gaps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 2px solid var(--tgi-ink); background: var(--tgi-panel); }
.tgi-gap { min-height: 150px; padding: 1rem; border-right: 1px solid var(--tgi-line); }
.tgi-gap:last-child { border-right: 0; }
.tgi-gap b { display: block; margin-bottom: .45rem; color: var(--tgi-green); font-family: ui-monospace, monospace; }
.tgi-gap p { margin: 0; font-size: .9rem; }

.tgi-roster { list-style: none; margin: 1.4rem 0 0; padding: 0; border-top: 2px solid var(--tgi-ink); }
.tgi-slot { display: grid; grid-template-columns: 72px minmax(0, 1fr); border-bottom: 1px solid var(--tgi-ink); padding: 1.25rem 0; }
.tgi-slot:first-child { background: var(--tgi-lime); padding-inline: 1rem; }
.tgi-slot:first-child .tgi-rank { color: var(--tgi-green-dark); }
.tgi-rank { color: var(--tgi-cobalt); font: 900 1.15rem/1 ui-monospace, monospace; }
.tgi-slot h3 { margin: 0 0 .55rem; font-size: 1.45rem; }
.tgi-slot p { margin: .35rem 0; }
.tgi-slot dl { display: grid; grid-template-columns: 130px 1fr; gap: .35rem .8rem; margin: .8rem 0 0; }
.tgi-slot dt { color: var(--tgi-muted); font-size: .74rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.tgi-slot dd { margin: 0; }

.tgi-method { border: 2px solid var(--tgi-ink); background: var(--tgi-panel); box-shadow: 10px 10px 0 var(--tgi-green); padding: clamp(1.25rem, 3vw, 2.1rem); }
.tgi-method-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--tgi-line); }
.tgi-method-grid div { padding: .9rem; border-right: 1px solid var(--tgi-line); border-bottom: 1px solid var(--tgi-line); }
.tgi-method-grid div:nth-child(even) { border-right: 0; }
.tgi-method-grid b { display: block; color: var(--tgi-green); }
.tgi-boundary { margin-top: 1rem; padding: 1rem; border-left: 6px solid var(--tgi-cobalt); background: #e8edff; }

.tgi-evidence { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 2px solid var(--tgi-ink); }
.tgi-evidence article { padding: 1.1rem; background: var(--tgi-panel); border-right: 1px solid var(--tgi-ink); }
.tgi-evidence article:last-child { border-right: 0; }
.tgi-evidence b { display: block; margin-bottom: .4rem; color: var(--tgi-green); }
.tgi-evidence p { margin: 0; font-size: .91rem; }

.tgi-table-wrap { overflow-x: auto; border: 2px solid var(--tgi-ink); background: var(--tgi-panel); }
.tgi-table { width: 100%; min-width: 820px; border-collapse: collapse; }
.tgi-table caption { padding: .85rem 1rem; text-align: left; font-weight: 850; border-bottom: 1px solid var(--tgi-ink); }
.tgi-table th, .tgi-table td { padding: .78rem .9rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--tgi-line); }
.tgi-table thead th { color: #fff; background: var(--tgi-ink); font-size: .75rem; letter-spacing: .05em; text-transform: uppercase; }
.tgi-table tbody th { min-width: 280px; }
.tgi-win { display: inline-block; padding: .12rem .38rem; color: var(--tgi-ink); background: var(--tgi-lime); font-weight: 850; }

.tgi-role-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 2px solid var(--tgi-ink); }
.tgi-role-grid article { padding: 1rem; border-right: 1px solid var(--tgi-line); background: var(--tgi-panel); }
.tgi-role-grid article:last-child { border-right: 0; }
.tgi-role-grid h3 { margin-top: 0; }
.tgi-window { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 1.2rem; padding: 1.25rem; color: #fff; background: var(--tgi-green-dark); }
.tgi-window a { color: var(--tgi-lime); }
.tgi-window ul { margin: 0; }

.tgi-checks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.tgi-check { padding: 1rem; border: 1px solid var(--tgi-ink); background: var(--tgi-panel); }
.tgi-check b { display: block; margin-bottom: .3rem; }
.tgi-faq details { border-top: 1px solid var(--tgi-ink); }
.tgi-faq details:last-child { border-bottom: 1px solid var(--tgi-ink); }
.tgi-faq summary { cursor: pointer; padding: 1rem 0; font-weight: 850; }
.tgi-faq-answer { padding: 0 0 1rem; }
.tgi-faq-answer p { margin: 0; }
.tgi-sources li { margin-bottom: .55rem; }
.tgi-handoff { padding: 1.3rem; color: #fff; background: var(--tgi-ink); border-left: 9px solid var(--tgi-lime); }
.tgi-handoff .tgi-label { color: var(--tgi-lime); }
.tgi-handoff a { color: var(--tgi-lime); }

.tgi-site-footer { padding: 2.5rem 0; color: #e7eee9; background: var(--tgi-ink); }
.tgi-footer-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 2rem; }
.tgi-site-footer a { color: var(--tgi-lime); }
.tgi-footer-links { display: flex; flex-wrap: wrap; gap: .4rem 1rem; align-content: start; }
.tgi-site-footer p { margin: .35rem 0; font-size: .82rem; }

@media (max-width: 900px) {
  .tgi-hero-grid, .tgi-layout, .tgi-window { grid-template-columns: 1fr; }
  .tgi-toc { position: static; }
  .tgi-gaps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tgi-gap { border-bottom: 1px solid var(--tgi-line); }
  .tgi-evidence, .tgi-role-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tgi-evidence article:nth-child(2), .tgi-role-grid article:nth-child(2) { border-right: 0; }
}

@media (max-width: 620px) {
  .tgi-header-row { align-items: flex-start; flex-direction: column; padding-block: .85rem; }
  .tgi-nav { justify-content: flex-start; }
  .tgi-hero { padding-top: 2.8rem; }
  .tgi-section-head { grid-template-columns: 1fr; }
  .tgi-gaps, .tgi-method-grid, .tgi-evidence, .tgi-role-grid, .tgi-checks, .tgi-footer-grid { grid-template-columns: 1fr; }
  .tgi-gap, .tgi-evidence article, .tgi-role-grid article { border-right: 0; border-bottom: 1px solid var(--tgi-line); }
  .tgi-slot { grid-template-columns: 46px minmax(0, 1fr); }
  .tgi-slot dl { grid-template-columns: 1fr; }
  .tgi-table { min-width: 0; }
  .tgi-table thead { position: absolute; left: -9999px; }
  .tgi-table tr { display: block; padding: .8rem; border-bottom: 1px solid var(--tgi-line); }
  .tgi-table th, .tgi-table td { display: block; padding: .2rem 0; border: 0; }
  .tgi-table tbody th { min-width: 0; }
  .tgi-table td:nth-child(2)::before { content: "Best fit: "; font-weight: 850; }
  .tgi-table td:nth-child(3)::before { content: "Why: "; font-weight: 850; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }