:root {
  --guide-bg: #fafbf3;
  --guide-ink: #111111;
  --guide-muted: #686868;
  --guide-line: rgba(17, 17, 17, .14);
  --guide-pink: #ff0070;
  --guide-lime: #dfff00;
  --guide-panel: #f3f4ec;
}

html { background: var(--guide-bg); }

body.guide-page {
  margin: 0;
  background: var(--guide-bg);
  color: var(--guide-ink);
  font-family: "Marcha Sans Regular", Inter, Arial, sans-serif;
}

.guide-main,
.guide-main * { box-sizing: border-box; }

.guide-frame {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.guide-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(76px, 10vw, 142px) 0 clamp(64px, 8vw, 110px);
  border-bottom: 1px solid var(--guide-line);
  background-image:
    linear-gradient(rgba(17,17,17,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17,17,17,.055) 1px, transparent 1px);
  background-size: 25vw 100%, 25vw 100%;
}

.guide-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 30px;
  color: var(--guide-muted);
  font: 400 11px/1.4 "Space Mono", monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.guide-breadcrumbs a { color: inherit; text-decoration: none; }
.guide-breadcrumbs a:hover { color: var(--guide-pink); }

.guide-eyebrow {
  margin: 0 0 20px;
  color: var(--guide-muted);
  font: 400 11px/1.4 "Space Mono", monospace;
  letter-spacing: .27em;
  text-transform: uppercase;
}

.guide-hero h1 {
  max-width: 1040px;
  margin: 0;
  font-family: "Marcha Sans Black", Inter, Arial, sans-serif;
  font-size: clamp(48px, 7.2vw, 96px);
  font-weight: 900;
  line-height: .94;
  letter-spacing: -.055em;
}

.guide-hero h1 em {
  color: var(--guide-pink);
  font-family: "Marcha Sans Black Italic", "Marcha Sans Black", sans-serif;
}

.guide-answer {
  max-width: 840px;
  margin: 32px 0 0;
  color: #383838;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.5;
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 32px;
  color: var(--guide-muted);
  font: 400 11px/1.5 "Space Mono", monospace;
  text-transform: uppercase;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(240px, 320px);
  gap: clamp(44px, 7vw, 92px);
  align-items: start;
  padding: clamp(64px, 8vw, 112px) 0;
}

.guide-article { min-width: 0; }

.guide-article h2 {
  margin: 72px 0 22px;
  font-family: "Marcha Sans Black", Inter, Arial, sans-serif;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1;
  letter-spacing: -.04em;
}

.guide-article h2:first-child { margin-top: 0; }

.guide-article h3 {
  margin: 34px 0 12px;
  font-size: 23px;
  line-height: 1.2;
  letter-spacing: -.02em;
}

.guide-article p,
.guide-article li {
  color: #444;
  font-size: 17px;
  line-height: 1.72;
}

.guide-article a {
  color: var(--guide-ink);
  text-decoration-color: var(--guide-pink);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.guide-article a:hover { color: var(--guide-pink); }

.guide-article ul,
.guide-article ol { padding-left: 22px; }

.guide-callout {
  margin: 34px 0;
  padding: 24px 26px;
  border: 1px solid var(--guide-line);
  border-left: 5px solid var(--guide-pink);
  background: #fff;
}

.guide-callout strong { display: block; margin-bottom: 8px; }

.guide-table-wrap {
  margin: 34px 0;
  overflow-x: auto;
  border: 1px solid var(--guide-line);
  border-radius: 12px;
  background: #fff;
}

.guide-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.guide-table th,
.guide-table td {
  padding: 17px 18px;
  border-bottom: 1px solid var(--guide-line);
  text-align: left;
  vertical-align: top;
  font-size: 15px;
  line-height: 1.5;
}

.guide-table th { background: var(--guide-panel); font-weight: 700; }
.guide-table tr:last-child td { border-bottom: 0; }

.guide-toc {
  position: sticky;
  top: calc(var(--marcha-banner-height, 0px) + 96px);
  padding: 24px;
  border: 1px solid var(--guide-line);
  background: rgba(250, 251, 243, .95);
  backdrop-filter: blur(10px);
}

.guide-toc strong,
.guide-related h2 {
  display: block;
  margin: 0 0 16px;
  font: 700 11px/1.4 "Space Mono", monospace;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.guide-toc ol { margin: 0; padding-left: 20px; }
.guide-toc li { margin: 10px 0; color: var(--guide-muted); font-size: 14px; line-height: 1.4; }
.guide-toc a { color: inherit; text-decoration: none; }
.guide-toc a:hover { color: var(--guide-pink); }

.guide-faq {
  margin-top: 82px;
  padding-top: 62px;
  border-top: 1px solid var(--guide-line);
}

.guide-faq details { border-bottom: 1px solid var(--guide-line); }
.guide-faq summary {
  padding: 22px 34px 22px 0;
  cursor: pointer;
  font-size: 19px;
  font-weight: 700;
  list-style: none;
}
.guide-faq summary::-webkit-details-marker { display: none; }
.guide-faq summary::after { content: "+"; float: right; color: var(--guide-pink); }
.guide-faq details[open] summary::after { content: "−"; }
.guide-faq details p { margin: 0; padding: 0 0 24px; }

.guide-related {
  padding: clamp(54px, 7vw, 88px) 0;
  border-top: 1px solid var(--guide-line);
}

.guide-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--guide-line);
  background: var(--guide-line);
}

.guide-card {
  min-height: 190px;
  padding: 26px;
  background: var(--guide-bg);
  color: var(--guide-ink);
  text-decoration: none;
  transition: background-color .2s ease, color .2s ease;
}
.guide-card:hover { background: var(--guide-pink); color: #fff; }
.guide-card span { display: block; margin-bottom: 38px; font: 400 10px/1.3 "Space Mono", monospace; letter-spacing: .16em; }
.guide-card strong { display: block; font-size: 23px; line-height: 1.05; letter-spacing: -.025em; }
.guide-card small { display: block; margin-top: 14px; color: currentColor; opacity: .72; line-height: 1.45; }

.guide-index-hero { padding-bottom: clamp(58px, 7vw, 90px); }
.guide-index-intro { max-width: 760px; }
.guide-index-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0 0 clamp(74px, 10vw, 132px); }
.guide-index-grid .guide-card { min-height: 240px; }

.guide-source-list {
  margin-top: 44px;
  padding: 24px;
  border: 1px solid var(--guide-line);
  background: var(--guide-panel);
}
.guide-source-list h2 { margin-top: 0; font-size: 26px; }
.guide-source-list li { margin: 12px 0; font-family: "Space Mono", monospace; font-size: 12px; overflow-wrap: anywhere; }

.guide-article code {
  padding: .16em .42em;
  border: 1px solid var(--guide-line);
  background: var(--guide-panel);
  font: 400 .86em/1.4 "Space Mono", monospace;
}

.guide-article ol li::marker { color: var(--guide-pink); font-weight: 800; }

.guide-shot { margin: 22px 0 6px; }
.guide-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--guide-line);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(17, 17, 17, .08);
}
.guide-shot figcaption {
  margin-top: 10px;
  color: var(--guide-muted);
  font-size: 14px;
  line-height: 1.45;
}

@media (max-width: 900px) {
  .guide-layout { grid-template-columns: 1fr; }
  .guide-toc { position: static; order: -1; }
  .guide-card-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .guide-frame { width: min(100% - 30px, 1180px); }
  .guide-hero { padding-top: 58px; background-size: 50vw 100%, 50vw 100%; }
  .guide-hero h1 { font-size: clamp(42px, 14vw, 62px); }
  .guide-answer { font-size: 17px; }
  .guide-layout { padding-top: 46px; gap: 34px; }
  .guide-article h2 { margin-top: 56px; font-size: 34px; }
  .guide-article p, .guide-article li { font-size: 16px; }
  .guide-card-grid, .guide-index-grid { grid-template-columns: 1fr; }
  .guide-card, .guide-index-grid .guide-card { min-height: 170px; }
  .guide-table-wrap { margin-right: -15px; }
}

@media (prefers-reduced-motion: reduce) {
  .guide-card { transition: none; }
}