:root {
  --text: #242428;
  --muted: #67676f;
  --line: #e7e7ea;
  --accent: #00a8b5;
  --soft: #f6f7f8;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: #fff;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

.product-presentation {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
  background: #fff;
}

.image-block img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-image { position: relative; }

.hero-copy {
  position: absolute;
  top: 8%;
  left: 24px;
  right: 24px;
  color: #fff;
  text-align: center;
  text-shadow: 0 2px 18px rgba(0, 0, 0, .75);
}

.hero-copy h2 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4.2vw, 52px);
  letter-spacing: -.02em;
}

.hero-copy p {
  margin: 0;
  font-size: clamp(16px, 2.2vw, 27px);
}

.copy-block {
  max-width: 860px;
  margin: 0 auto;
  padding: 44px 32px 58px;
  text-align: center;
}

.copy-block.intro { padding-top: 52px; }

.overline {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1, h2 {
  margin: 0 0 18px;
  line-height: 1.15;
  letter-spacing: -.025em;
}

h1 { font-size: clamp(30px, 4.2vw, 50px); }
h2 { font-size: clamp(26px, 3.2vw, 38px); }

.copy-block p:not(.overline) {
  margin: 0 auto;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.copy-block p:not(.overline) + p { margin-top: 14px; }

.highlights {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 8px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.highlights div {
  display: flex;
  min-height: 145px;
  padding: 28px 18px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--soft);
  text-align: center;
}

.highlights strong { font-size: 23px; }
.highlights span { margin-top: 4px; color: var(--muted); font-size: 14px; }

.important-info {
  padding: 48px 42px 38px;
  background: #fff;
  border-top: 1px solid var(--line);
}

.important-info h2 {
  margin-bottom: 28px;
  text-align: center;
}

.important-info ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 42px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.important-info li {
  position: relative;
  padding: 15px 0 15px 24px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.important-info li::before {
  content: "•";
  position: absolute;
  left: 2px;
  color: var(--accent);
  font-size: 24px;
  line-height: 1;
}

.approved-note {
  max-width: 1000px;
  margin: 26px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footnote {
  max-width: 1000px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 13px;
}

.technical-info {
  padding: 30px 42px 34px;
  border-top: 1px solid var(--line);
  background: var(--soft);
}

.technical-info h2 { margin-bottom: 18px; text-align: center; font-size: 24px; }

.technical-info dl {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  max-width: 1000px;
  margin: 0 auto;
  background: var(--line);
  border: 1px solid var(--line);
}

.technical-info dl div { padding: 14px 16px; background: #fff; }
.technical-info dl .full { grid-column: 1 / -1; }
.technical-info dt { margin-bottom: 5px; color: var(--muted); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.technical-info dd { margin: 0; font-size: 14px; font-weight: 700; }

@media (max-width: 720px) {
  .hero-copy { top: 7%; }
  .copy-block { padding: 34px 22px 44px; }
  .copy-block.intro { padding-top: 38px; }
  .copy-block p:not(.overline) { font-size: 16px; }
  .highlights { grid-template-columns: repeat(2, 1fr); }
  .highlights div { min-height: 125px; padding: 22px 12px; }
  .highlights strong { font-size: 19px; }
  .important-info { padding: 38px 22px 30px; }
  .important-info ul { grid-template-columns: 1fr; }
  .technical-info { padding: 28px 22px 30px; }
  .technical-info dl { grid-template-columns: repeat(2, 1fr); }
  .technical-info dl .full { grid-column: 1 / -1; }
}

@media (max-width: 460px) {
  .technical-info dl { grid-template-columns: 1fr; }
  .technical-info dl .full { grid-column: auto; }
}

@media (max-width: 420px) {
  .highlights { grid-template-columns: 1fr; }
}