/* Premium Internet detail page (premium-internet.html) */

.oh-f-pi-page {
  padding-top: 102px;
  min-height: 100vh;
  background: linear-gradient(165deg, #e8f1ff 0%, #f5f8ff 35%, #fafcff 100%);
  position: relative;
  overflow-x: clip;
}

.oh-f-pi-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 40% at 80% 0%, rgba(0, 81, 215, 0.06), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.oh-f-pi-inner {
  position: relative;
  z-index: 1;
  width: var(--inner);
  max-width: 100%;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1.25rem, 4vw, 2.5rem) clamp(4rem, 8vw, 5.5rem);
}

.oh-f-pi-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1.25rem 1.5rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.oh-f-pi-hero__icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: linear-gradient(137deg, #2c6bff 0%, #5463ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 8px 28px rgba(0, 42, 194, 0.2);
}

.oh-f-pi-hero__text {
  flex: 1;
  min-width: 0;
}

.oh-f-pi-kicker {
  margin: 0 0 0.5rem;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--c-blue);
  text-transform: uppercase;
}

.oh-f-pi-hero h1 {
  margin: 0 0 0.75rem;
  font-family: 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei UI', 'Microsoft YaHei', sans-serif;
  font-size: 48px;
  font-weight: 700;
  font-style: normal;
  line-height: 48px;
  color: var(--c-text);
}

@media (max-width: 640px) {
  .oh-f-pi-hero h1 {
    font-size: clamp(1.75rem, 9vw, 48px);
    line-height: 1.1;
  }
}

.oh-f-pi-lead {
  margin: 0;
  max-width: none;
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-muted);
}

@media (min-width: 768px) {
  .oh-f-pi-lead {
    white-space: nowrap;
  }
}

.oh-f-pi-h2 {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.25rem;
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  font-weight: 800;
  color: var(--c-text);
}

.oh-f-pi-h2__bar {
  width: 4px;
  height: 1.35em;
  border-radius: 2px;
  background: var(--c-purple);
  flex-shrink: 0;
}

.oh-f-pi-overview {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

@media (min-width: 900px) {
  .oh-f-pi-overview {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: clamp(1.5rem, 3vw, 2.5rem);
  }
}

.oh-f-pi-overview__main p {
  margin: 0 0 1rem;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-body);
}

.oh-f-pi-overview__main p:last-child {
  margin-bottom: 0;
}

.oh-f-pi-caps {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  padding: 1.5rem 1.5rem 2.25rem;
  background: linear-gradient(125deg, #f08200 0%, #f5a623 45%, #ffc14a 100%);
  box-shadow: 0 12px 40px rgba(240, 130, 0, 0.25);
}

.oh-f-pi-caps h3 {
  margin: 0 0 0.85rem;
  padding-bottom: 0.7rem;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  border-bottom: 1px dotted rgba(255, 255, 255, 0.65);
}

.oh-f-pi-caps ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.oh-f-pi-caps li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  margin-bottom: 0.85rem;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.96);
}

.oh-f-pi-caps li:last-child {
  margin-bottom: 0;
}

.oh-f-pi-caps__check {
  flex-shrink: 0;
  margin-top: 2px;
  color: #fff;
}

.oh-f-pi-caps__deco {
  position: absolute;
  right: -0.25rem;
  bottom: -0.35rem;
  width: 120px;
  height: 100px;
  opacity: 0.2;
  pointer-events: none;
}

.oh-f-pi-features {
  margin-bottom: 0;
}

.oh-f-pi-feature-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .oh-f-pi-feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.oh-f-pi-feature-card {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1.35rem 1.5rem;
  background: #fff;
  border-radius: 20px;
  border: 1px solid rgba(0, 81, 215, 0.08);
  box-shadow: 0 8px 32px rgba(0, 42, 194, 0.08);
}

.oh-f-pi-feature-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(0, 81, 215, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-blue);
}

.oh-f-pi-feature-card p {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-text);
}