:root {
  --ink: #edf3f6;
  --muted: #a8b5bc;
  --bg: #071014;
  --panel: #0d1a20;
  --line: #20343c;
  --accent: #58d3b0;
  --accent2: #9be7d0;
  --paper: #f6faf9;
  --paper-ink: #102027;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: radial-gradient(circle at 75% 0%, #12343a 0, #071014 42%);
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.manual-hero,
main,
footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

.manual-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.brand span,
.eyebrow {
  color: var(--accent);
}

.manual-nav div {
  display: flex;
  gap: 22px;
  color: var(--muted);
}

.manual-nav a:hover {
  color: var(--accent);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 36px;
  align-items: center;
  padding: 80px 0 72px;
}

.eyebrow {
  margin: 0 0 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 750;
  font-size: .78rem;
}

h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  line-height: 1;
  letter-spacing: -.06em;
  margin: 0 0 20px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -.045em;
  margin: 0;
}

h3 {
  line-height: 1.15;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.15rem;
}

.version {
  color: #84959c;
  font-size: .92rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 14px;
}

.button {
  display: inline-block;
  padding: 13px 18px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: #03100e;
  font-weight: 760;
}

.button.alt {
  background: transparent;
  color: var(--accent);
}

.phone-card {
  border: 1px solid #2b5d58;
  border-radius: 28px;
  padding: 22px;
  background: linear-gradient(150deg, #10242a, #081217);
  box-shadow: 0 24px 70px rgba(0,0,0,.28);
}

.phone-top {
  display: grid;
  grid-template-columns: 34px 1fr 36px;
  gap: 10px;
  align-items: center;
  color: var(--muted);
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #2b5d58);
}

.phone-top b {
  display: grid;
  place-items: center;
  height: 32px;
  border: 1px solid #3c6e66;
  border-radius: 50%;
  color: var(--accent2);
}

.toolbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
  margin: 18px 0;
}

.toolbar span {
  padding: 8px 6px;
  border-radius: 10px;
  text-align: center;
  background: #132a31;
  color: var(--accent2);
  font-size: .75rem;
  font-weight: 800;
}

.ticket-card {
  padding: 16px;
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #0c1a20;
}

.ticket-card small {
  display: block;
  color: var(--accent);
  letter-spacing: .12em;
  font-weight: 800;
}

.ticket-card strong {
  display: block;
  margin-top: 4px;
  color: var(--ink);
}

.ticket-card p {
  margin: 4px 0 0;
  color: var(--muted);
}

.ticket-card.muted {
  opacity: .78;
}

.notice-band,
.section {
  border-top: 1px solid var(--line);
  padding: 58px 0;
}

.notice-band {
  color: var(--muted);
}

.notice-band p {
  margin: 0 0 12px;
  padding-left: 18px;
  border-left: 3px solid var(--accent);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: end;
  margin-bottom: 26px;
}

.quick-grid,
.role-grid,
.anatomy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.quick-card,
.role-grid article,
.anatomy-grid article,
.manual-card,
.downloads {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, #10242a, #0a151a);
}

.quick-card {
  padding: 20px;
}

.quick-card span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: #03100e;
  font-weight: 900;
}

.quick-card h3,
.role-grid h3 {
  color: var(--accent2);
}

.quick-card p,
.role-grid p,
.anatomy-grid p,
.manual-card p,
.manual-card li,
.downloads p {
  color: var(--muted);
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.flow div {
  position: relative;
  min-height: 116px;
  padding: 18px;
  border: 1px solid #2b5d58;
  border-radius: 18px;
  background: #0c1a20;
}

.flow div:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -10px;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--accent);
}

.flow b,
.flow span {
  display: block;
}

.flow b {
  color: var(--accent2);
  margin-bottom: 8px;
}

.flow span {
  color: var(--muted);
  font-size: .94rem;
}

.role-grid article,
.anatomy-grid article {
  padding: 20px;
}

.anatomy-grid b {
  color: var(--accent2);
}

.manual-sections {
  display: grid;
  gap: 18px;
}

.manual-card {
  padding: 28px;
}

.manual-card h3 {
  margin: 0 0 8px;
  color: var(--accent2);
  font-size: 1.55rem;
}

.manual-card-head {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
  padding-bottom: 18px;
}

.manual-card ol {
  margin: 0;
  padding-left: 22px;
}

.manual-card li {
  margin: 9px 0;
}

.tips,
.examples {
  margin-top: 18px;
  padding: 16px;
  border-radius: 14px;
  background: #081217;
  border: 1px solid #24424a;
}

.tips b,
.examples b {
  color: var(--accent2);
}

.tips ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.downloads {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 24px;
  align-items: center;
  padding: 30px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 42px 28px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

footer a {
  color: var(--accent);
}

@media (max-width: 820px) {
  .manual-nav,
  .section-head,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .manual-nav div {
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero-grid,
  .quick-grid,
  .role-grid,
  .anatomy-grid,
  .manual-card-head,
  .downloads {
    grid-template-columns: 1fr;
  }

  .flow {
    grid-template-columns: 1fr;
  }

  .flow div:not(:last-child)::after {
    left: 28px;
    right: auto;
    top: auto;
    bottom: -10px;
    width: 2px;
    height: 18px;
  }
}