/* 附加页面样式（Windows / macOS / 有道词典APP），沿用首页设计语言 */

.pf-hero {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, #f5f8ff 0%, #ffffff 100%);
}

.pf-hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
}

.pf-hero-text {
  flex: 1 1 420px;
  min-width: 300px;
}

.pf-eyebrow {
  font-size: 15px;
  letter-spacing: 2px;
  color: #d0021b;
  font-weight: 600;
  margin: 0 0 14px;
}

.pf-title {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  color: #1a1a1a;
  margin: 0 0 18px;
}

.pf-desc {
  font-size: 16px;
  line-height: 1.9;
  color: #5a6072;
  margin: 0 0 28px;
}

.pf-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.pf-btn-img {
  height: 52px;
  width: auto;
  display: block;
  transition: transform 0.25s ease;
}

.pf-btn-img:hover {
  transform: translateY(-3px);
}

.pf-meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 24px;
}

.pf-meta li {
  font-size: 14px;
  color: #1a1a1a;
}

.pf-meta li span {
  display: block;
  font-size: 13px;
  color: #9aa0b0;
  margin-bottom: 4px;
}

.pf-hero-visual {
  flex: 1 1 420px;
  min-width: 300px;
  text-align: center;
}

.pf-hero-visual img {
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(20, 30, 60, 0.12);
}

.pf-hero-qr .pf-qr {
  width: 220px;
  border-radius: 16px;
  background: #fff;
  padding: 12px;
}

.pf-qr-text {
  margin-top: 14px;
  font-size: 14px;
  color: #5a6072;
}

.pf-section {
  padding: 80px 0;
}

.pf-section-alt {
  background: #f7f9fc;
}

.pf-section h2 {
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  color: #1a1a1a;
  margin: 0 0 12px;
}

.pf-section .sub-desc {
  text-align: center;
  color: #9aa0b0;
  letter-spacing: 2px;
  font-size: 13px;
  margin: 0 0 48px;
}

.pf-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.pf-card {
  background: #fff;
  border: 1px solid #eef1f6;
  border-radius: 16px;
  padding: 28px 24px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.pf-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(20, 30, 60, 0.08);
}

.pf-card-icon {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 18px;
  background: #f2f5fa;
}

.pf-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: #1a1a1a;
  margin: 0 0 10px;
}

.pf-card p {
  font-size: 14px;
  line-height: 1.8;
  color: #5a6072;
  margin: 0;
}

.pf-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.pf-step {
  background: #fff;
  border-radius: 16px;
  padding: 28px 24px;
  border: 1px solid #eef1f6;
}

.pf-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #d0021b;
  color: #fff;
  font-weight: 700;
  margin-bottom: 14px;
}

.pf-step p {
  font-size: 15px;
  line-height: 1.8;
  color: #5a6072;
  margin: 0;
}

.pf-step a {
  color: #d0021b;
  text-decoration: none;
}

.pf-step a:hover {
  text-decoration: underline;
}

.pf-faq {
  max-width: 860px;
  margin: 0 auto;
}

.pf-faq-item {
  border-bottom: 1px solid #eef1f6;
  padding: 22px 0;
}

.pf-faq-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1a1a1a;
  margin: 0 0 10px;
}

.pf-faq-item p {
  font-size: 15px;
  line-height: 1.9;
  color: #5a6072;
  margin: 0;
}

.pf-cta {
  text-align: center;
  margin-top: 48px;
}

.pf-cta-btn {
  height: 58px;
  width: auto;
}

@media (max-width: 900px) {
  .pf-grid,
  .pf-steps {
    grid-template-columns: 1fr;
  }

  .pf-hero {
    padding: 110px 0 56px;
  }

  .pf-title {
    font-size: 28px;
  }

  .pf-section {
    padding: 56px 0;
  }
}