:root {
  color-scheme: light;
  --ink: #211c16;
  --muted: #6f665a;
  --line: #ded3bf;
  --paper: #fffdf7;
  --wash: #fcf6e8;
  --yellow: #f6c645;
  --blue: #2e6bf6;
  --green: #16875f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--wash);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  line-height: 1.75;
}

a { color: var(--blue); text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; }

.guide-header,
.guide-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0;
}

.guide-header nav,
.guide-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}

.brand-lockup img { width: 38px; height: 38px; object-fit: contain; }
.brand-lockup span { display: grid; line-height: 1.2; }
.brand-lockup small { color: var(--muted); }

.guide-hero {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  gap: 34px;
  align-items: center;
  padding: 34px 0 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead-answer {
  margin: 24px 0 0;
  padding: 20px 22px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 8px 8px 0 rgba(33, 28, 22, 0.08);
  font-size: 18px;
}

.hero-art {
  margin: 0;
  padding: 0;
}

.hero-art img,
.screenshot img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--paper);
}

.guide-layout {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 760px) 260px;
  gap: 56px;
  align-items: start;
  padding: 28px 0 64px;
}

.guide-article {
  min-width: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(24px, 5vw, 48px);
}

.guide-article h2 {
  margin: 42px 0 12px;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0;
}

.guide-article h3 {
  margin: 26px 0 8px;
  font-size: 20px;
  letter-spacing: 0;
}

.guide-article p,
.guide-article li {
  font-size: 17px;
}

.guide-article ol {
  padding-left: 1.4em;
}

.screenshot {
  margin: 32px 0;
}

.screenshot figcaption,
.hero-art figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.guide-sidebar {
  position: sticky;
  top: 20px;
  display: grid;
  gap: 18px;
}

.side-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.side-card strong {
  display: block;
  margin-bottom: 10px;
}

.side-card a {
  display: block;
  margin: 8px 0;
}

.cta-card {
  border-color: var(--ink);
  box-shadow: 6px 6px 0 rgba(33, 28, 22, 0.08);
}

.cta-button {
  display: inline-flex;
  justify-content: center;
  width: 100%;
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.related-guides {
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.related-guides ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 20px;
  padding-left: 1.1em;
}

@media (max-width: 860px) {
  .guide-header,
  .guide-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .guide-hero,
  .guide-layout {
    grid-template-columns: 1fr;
  }

  .guide-sidebar {
    position: static;
    order: -1;
  }

  .related-guides ul {
    grid-template-columns: 1fr;
  }
}