main {
  position: relative;
  z-index: 1;
}

.hero {
  position: relative;
  background: var(--bg);
  text-align: center;
  padding: 60px 24px 80px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 30%, rgba(59, 130, 246, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 400;
  color: var(--text);
  margin-bottom: 16px;
  max-width: 720px;
  position: relative;
  font-family: var(--academic-serif);
}

.hero p {
  font-size: 17px;
  color: var(--muted);
  max-width: 580px;
  position: relative;
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
}

.hero-wave svg {
  display: block;
  width: 100%;
  height: 60px;
}

.offers-section {
  position: relative;
  padding: 72px 24px 64px;
  background-image: url("/images/offers_bg/offers_bg.webp");
  background-size: cover;
  background-position: center;
}

.offers-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.88) 0%, rgba(18, 27, 46, 0.92) 100%);
}

.offers-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.offers-section h2 {
  text-align: center;
  font-size: 28px;
  font-weight: 400;
  margin-bottom: 36px;
  color: var(--text);
}

.offers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.offer-card {
  background: linear-gradient(145deg, #1a2540 0%, #0f1629 100%);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.offer-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.offer-logo {
  width: 120px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.offer-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  max-width: none;
}

.offer-card h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 8px;
  font-weight: 400;
}

.offer-bonus-group {
  margin-bottom: 12px;
}

.offer-bonus {
  font-size: 15px;
  color: #fbbf24;
  font-weight: 400;
  word-break: break-word;
  overflow-wrap: break-word;
  line-height: 1.35;
}

.offer-terms {
  display: block;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 4px;
}

.offer-desc {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.5;
  margin-bottom: 16px;
  text-align: left;
}

.offer-cta {
  display: inline-block;
  padding: 10px 24px;
  background: linear-gradient(135deg, #e11d48, #be123c);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: opacity 0.2s ease;
  text-decoration: none;
  text-align: center;
}

.offer-cta:hover {
  opacity: 0.9;
  color: #fff;
}

.info-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px;
  position: relative;
}

.info-section h2 {
  font-size: 26px;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--primary);
  font-family: var(--academic-serif);
}

.info-section p {
  color: var(--text);
  margin-bottom: 14px;
}

.info-cta {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 28px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--primary);
  font-size: 15px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.info-cta:hover {
  background: rgba(59, 130, 246, 0.18);
  transform: translateY(-2px);
  color: var(--accent);
}

.info-1 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.info-1-visual {
  border-radius: 8px;
  overflow: hidden;
  max-width: 100%;
  width: 100%;
  max-height: 320px;
  border: 1px solid var(--border);
}

.info-1-visual img {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.research-diagram {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.research-diagram span {
  font-family: var(--data-mono);
  font-size: 12px;
  padding: 8px 14px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
}

.info-2 {
  background: linear-gradient(135deg, rgba(18, 27, 46, 0.6), rgba(11, 18, 32, 0.8));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.info-2-bg {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 280px;
  height: 200px;
  background-image: url("/images/decorative/decor_2.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  border-radius: 8px;
  max-width: 40%;
}

.info-2-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
  position: relative;
}

.info-2-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
}

.info-2-card h3 {
  font-size: 15px;
  color: var(--accent);
  margin-bottom: 8px;
  font-family: var(--data-mono);
}

.info-3-split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: start;
}

.info-3-visual {
  max-width: 500px;
  max-height: 320px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.info-3-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.info-3-steps li {
  padding: 14px 0 14px 28px;
  border-left: 2px solid var(--accent);
  margin-bottom: 8px;
  position: relative;
}

.info-3-steps li::before {
  content: attr(data-step);
  position: absolute;
  left: -12px;
  top: 12px;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: var(--bg);
  font-size: 11px;
  font-family: var(--data-mono);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.info-4 {
  text-align: center;
}

.info-4-equation {
  font-family: var(--data-mono);
  font-size: 14px;
  color: var(--secondary);
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  padding: 16px 24px;
  border-radius: 8px;
  display: inline-block;
  margin: 20px 0;
}

.info-4-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 28px;
  text-align: left;
}

.info-4-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.info-4-col h3 {
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 10px;
}

.info-5 {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
}

.info-5-content {
  flex: 1 1 340px;
}

.info-5-visual {
  flex: 0 1 420px;
  max-width: 500px;
  max-height: 320px;
  border-radius: 8px;
  overflow: hidden;
}

.info-5-list {
  margin-top: 16px;
  padding-left: 20px;
}

.info-5-list li {
  margin-bottom: 8px;
  color: var(--muted);
}

.info-6 {
  background: rgba(18, 27, 46, 0.5);
  border-radius: 12px;
  padding: 48px 32px;
  margin-left: 24px;
  margin-right: 24px;
  max-width: calc(1200px - 48px);
}

.info-6-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  align-items: center;
}

.info-6-visual {
  max-width: 500px;
  max-height: 320px;
  border-radius: 8px;
  overflow: hidden;
}

.info-6-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.info-6-tags span {
  font-size: 12px;
  padding: 6px 12px;
  background: rgba(167, 139, 250, 0.12);
  border-radius: 4px;
  color: var(--accent);
  font-family: var(--data-mono);
}

.info-7-table-wrap {
  overflow-x: auto;
  margin-top: 24px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.info-7-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.info-7-table th,
.info-7-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.info-7-table th {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary);
  font-family: var(--data-mono);
  font-weight: 400;
}

.info-7-visual {
  margin-top: 28px;
  max-width: 500px;
  max-height: 320px;
  border-radius: 8px;
  overflow: hidden;
}

.info-8-timeline {
  position: relative;
  padding-left: 32px;
  margin-top: 24px;
}

.info-8-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  opacity: 0.4;
}

.info-8-step {
  position: relative;
  margin-bottom: 20px;
  padding: 18px 22px;
  background: var(--surface);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.info-8-step::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
}

.info-8-step h3 {
  font-size: 15px;
  color: var(--accent);
  margin-bottom: 6px;
}

.info-9 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.info-9-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-9-visual {
  max-width: 500px;
  max-height: 320px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.info-9-papers {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.info-9-papers h3 {
  font-size: 14px;
  font-family: var(--data-mono);
  color: var(--secondary);
  margin-bottom: 12px;
}

.info-9-papers ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.info-9-papers li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
}

.info-9-papers li:last-child {
  border-bottom: none;
}

.info-10 {
  text-align: center;
  padding-bottom: 72px;
}

.info-10-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
  text-align: left;
}

.info-10-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.info-10-card h3 {
  font-size: 16px;
  color: var(--primary);
  margin-bottom: 8px;
}

.academic-footnote {
  font-size: 11px;
  color: var(--muted);
  font-family: var(--data-mono);
  margin-top: 16px;
  text-align: center;
}

@media (max-width: 768px) {
  .hero {
    padding: 32px 20px 48px;
    min-height: 240px;
  }

  .hero-wave svg {
    height: 36px;
  }

  .info-1,
  .info-3-split,
  .info-4-cols,
  .info-6-inner,
  .info-9 {
    grid-template-columns: 1fr;
  }

  .info-2-grid,
  .info-10-cards {
    grid-template-columns: 1fr;
  }

  .info-2-bg {
    display: none;
  }

  .info-6 {
    margin-left: 16px;
    margin-right: 16px;
    padding: 32px 20px;
  }

  .info-1-visual,
  .info-3-visual,
  .info-5-visual,
  .info-6-visual,
  .info-7-visual,
  .info-9-visual {
    max-width: 100%;
    overflow: hidden;
  }

  .info-1-visual img,
  .info-3-visual img,
  .info-5-visual img,
  .info-6-visual img,
  .info-7-visual img,
  .info-9-visual img {
    max-width: 100%;
    height: auto;
  }

  .offer-logo {
    width: 100px;
    height: 50px;
  }

  .offer-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
  }
}