:root {
  --ink: #172234;
  --ink-soft: #45515e;
  --muted: #6d7782;
  --line: #dce2e6;
  --canvas: #f3f5f6;
  --paper: #ffffff;
  --warm: #f7ece6;
  --accent: #9b5437;
  --accent-dark: #713a25;
  --radius: 16px;
  --shell: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, h4, p, figure { margin-top: 0; }
h1, h2, h3, h4 { font-family: Montserrat, "Helvetica Neue", Arial, sans-serif; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: -70px;
  left: 18px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
}
.skip-link:focus { top: 18px; }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  min-height: 72px;
  padding: 0 max(32px, calc((100% - var(--shell)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid rgba(188, 199, 206, .7);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand img, footer img { width: 124px; height: auto; }
.brand-divider { width: 1px; height: 27px; background: #bcc7ce; }
.brand-label { color: var(--muted); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.site-header nav { display: flex; align-items: center; gap: 8px; }
.site-header nav a { padding: 9px 11px; border-radius: 8px; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.site-header nav a:hover, .site-header nav a:focus-visible { background: var(--warm); color: var(--accent-dark); }

.support-hero {
  width: min(var(--shell), calc(100% - 64px));
  margin: 0 auto;
  padding: 58px 0;
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(440px, 1.18fr);
  align-items: center;
  gap: 54px;
}
.support-hero-copy { max-width: 540px; }
.kicker { margin-bottom: 10px; color: var(--accent-dark); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1 { margin-bottom: 18px; font-size: clamp(42px, 5vw, 68px); line-height: 1.02; letter-spacing: -.045em; }
.support-hero-copy > p:not(.kicker) { margin-bottom: 24px; color: var(--ink-soft); font-size: 18px; }
.primary-link {
  display: inline-flex;
  min-height: 44px;
  padding: 10px 16px;
  align-items: center;
  border-radius: 9px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}
.primary-link:hover, .primary-link:focus-visible { background: var(--accent-dark); }
.support-hero figure { overflow: hidden; margin: 0; border: 7px solid #fff; border-radius: 22px; box-shadow: 0 20px 55px rgba(23, 34, 52, .11); }
.support-hero figure img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }

.manual-library {
  padding: 72px max(32px, calc((100% - var(--shell)) / 2)) 90px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.section-heading { max-width: 720px; margin-bottom: 48px; }
.section-heading h2 { margin-bottom: 10px; font-size: clamp(34px, 4vw, 52px); line-height: 1.08; letter-spacing: -.04em; }
.section-heading p, .group-heading p { margin-bottom: 0; color: var(--muted); }
.manual-group + .manual-group { margin-top: 62px; padding-top: 56px; border-top: 1px solid var(--line); }
.group-heading { display: grid; margin-bottom: 22px; grid-template-columns: minmax(0, .65fr) minmax(300px, .35fr); gap: 30px; align-items: end; }
.group-heading h3 { margin-bottom: 0; font-size: 25px; letter-spacing: -.025em; }
.manual-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.manual-grid-three { grid-template-columns: 1.15fr .85fr; }
.manual-grid-three .manual-card:first-child { grid-row: span 2; }
.manual-grid-three .manual-card:first-child img { min-height: 100%; }
.manual-card {
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(180px, .8fr) minmax(0, 1.2fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--canvas);
}
.manual-card img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
.manual-card > div { padding: 24px; align-self: center; }
.manual-card h4 { margin-bottom: 8px; font-size: 20px; line-height: 1.2; letter-spacing: -.02em; }
.manual-card p { margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.manual-card a { color: var(--accent-dark); font-size: 13px; font-weight: 800; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.manual-card a:hover, .manual-card a:focus-visible { color: var(--ink); }
.manual-card-wide { max-width: 780px; grid-template-columns: minmax(300px, 1.1fr) minmax(0, .9fr); }

.support-contact {
  width: min(var(--shell), calc(100% - 64px));
  margin: 64px auto;
  padding: 38px 42px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 34px;
  align-items: center;
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
}
.support-contact h2 { margin-bottom: 8px; font-size: 30px; letter-spacing: -.03em; }
.support-contact p { margin-bottom: 0; color: rgba(255,255,255,.72); }
.contact-links { display: grid; gap: 8px; }
.contact-links a { padding: 10px 14px; border: 1px solid rgba(255,255,255,.24); border-radius: 8px; font-size: 13px; font-weight: 800; text-align: center; }
.contact-links a:first-child { border-color: #fff; background: #fff; color: var(--ink); }

footer {
  padding: 36px max(32px, calc((100% - var(--shell)) / 2));
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  border-top: 1px solid var(--line);
  background: #fff;
}
footer p { margin: 0; color: var(--muted); font-size: 12px; }
footer div { display: flex; gap: 16px; }
footer div a { color: var(--ink-soft); font-size: 12px; font-weight: 700; }

@media (max-width: 900px) {
  .site-header { padding: 0 22px; }
  .support-hero { width: min(calc(100% - 40px), 700px); grid-template-columns: 1fr; gap: 32px; }
  .support-hero-copy { max-width: 640px; }
  .manual-library { padding-right: 20px; padding-left: 20px; }
  .group-heading { grid-template-columns: 1fr; gap: 8px; }
  .manual-grid, .manual-grid-three { grid-template-columns: 1fr; }
  .manual-grid-three .manual-card:first-child { grid-row: auto; }
  .support-contact { width: min(calc(100% - 40px), 760px); grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr; text-align: left; }
}

@media (max-width: 620px) {
  .site-header { min-height: 66px; }
  .brand-divider, .brand-label { display: none; }
  .site-header nav a:not(:last-child) { display: none; }
  .support-hero { padding: 38px 0 46px; }
  h1 { font-size: 39px; }
  .manual-library { padding-top: 52px; padding-bottom: 64px; }
  .manual-group + .manual-group { margin-top: 44px; padding-top: 42px; }
  .manual-card, .manual-card-wide { grid-template-columns: 1fr; }
  .manual-card img { min-height: 190px; aspect-ratio: 16 / 10; }
  .support-contact { margin: 40px auto; padding: 28px 24px; }
  footer div { flex-wrap: wrap; }
}

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