* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #1b1b1b;
  --muted: #5b5f66;
  --accent: #2847c7;
  --accent-soft: #e9eefc;
  --surface: #f6f4f1;
  --surface-strong: #ede9e2;
  --line: #d7d1c7;
  --highlight: #f1f5ff;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #ffffff;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
  object-fit: cover;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.page {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  padding: 32px 24px;
  background: var(--surface);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.ad-label {
  font-size: 12px;
  color: var(--muted);
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 8px 10px;
  line-height: 1.4;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nav a {
  font-size: 14px;
  color: var(--ink);
}

.sticky-cta {
  margin-top: auto;
  position: sticky;
  top: 24px;
  background: var(--accent);
  color: #ffffff;
  padding: 14px 16px;
  text-align: center;
  border-radius: 16px;
}

.content {
  flex: 1;
  padding: 40px 60px 80px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.hero {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 40px;
  border-radius: 28px;
  background: var(--surface-strong);
  background-image: url("https://images.unsplash.com/photo-1545239351-ef35f43d514b?w=1400&q=80");
  background-size: cover;
  background-position: center;
  color: #ffffff;
  min-height: 340px;
  justify-content: flex-end;
}

.hero h1 {
  margin: 0;
  font-size: 38px;
  max-width: 680px;
}

.hero p {
  margin: 0;
  max-width: 560px;
  color: #f2f2f2;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 22px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  border: none;
  cursor: pointer;
}

.section {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.split {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}

.split.reverse {
  flex-direction: row-reverse;
}

.panel {
  flex: 1 1 260px;
  min-width: 260px;
}

.image-frame {
  flex: 1 1 260px;
  min-width: 260px;
  border-radius: 24px;
  overflow: hidden;
  background-color: var(--highlight);
}

.image-frame img {
  width: 100%;
  height: 100%;
}

.callout {
  padding: 28px;
  border-radius: 24px;
  background: var(--highlight);
  border: 1px solid var(--line);
}

.card-row {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.card {
  flex: 1 1 240px;
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card .image-frame {
  border-radius: 16px;
  min-height: 150px;
}

.price {
  font-weight: 700;
  font-size: 18px;
}

.form-wrap {
  padding: 30px;
  border-radius: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
}

form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

label {
  font-weight: 600;
  font-size: 14px;
}

input,
select,
textarea {
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font-family: inherit;
}

.footer {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  color: var(--muted);
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.references a {
  color: var(--accent);
}

.banner {
  position: fixed;
  left: 24px;
  bottom: 24px;
  max-width: 420px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
  display: none;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
  z-index: 10;
}

.banner-actions {
  display: flex;
  gap: 10px;
}

.banner button {
  flex: 1;
}

.plain-list {
  margin: 0;
  padding-left: 18px;
}

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

.wide-highlight {
  padding: 28px;
  border-radius: 24px;
  background: var(--surface-strong);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (max-width: 960px) {
  .page {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .content {
    padding: 32px 24px 60px;
  }

  .sticky-cta {
    position: static;
    margin-top: 0;
  }
}