* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #f6f7ff 0%, #eff2ff 100%);
  color: #212945;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.page {
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  padding: 12px 12px 94px;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 8;
  background: rgba(246, 247, 255, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(122, 136, 255, 0.16);
  border-radius: 14px;
  padding: 9px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

#nav-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 4px 10px rgba(65, 77, 179, 0.2);
  object-fit: cover;
}

#nav-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.4px;
  background: linear-gradient(90deg, #4359ff 0%, #8c5eff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero {
  margin-top: 10px;
  border-radius: 20px;
  padding: 16px 14px 14px;
  background: linear-gradient(145deg, #4c68ff 0%, #8a5cff 100%);
  color: #fff;
  box-shadow: 0 14px 30px rgba(66, 66, 190, 0.28);
}

.hero-tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.8px;
  opacity: 0.95;
}

#hero-title {
  margin: 6px 0 2px;
  font-size: clamp(28px, 8vw, 36px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: 0.6px;
  text-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}

.hero-subtitle {
  margin: 0;
  font-size: 13px;
  opacity: 0.95;
}

.hero-stats {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.hero-stat {
  text-align: center;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  padding: 8px 4px;
}

.hero-stat strong {
  display: block;
  font-size: clamp(18px, 5vw, 24px);
  line-height: 1.15;
}

.hero-stat span {
  font-size: 12px;
}

.panel {
  margin-top: 12px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid #e8ebff;
  box-shadow: 0 8px 20px rgba(55, 78, 160, 0.08);
  padding: 14px 12px;
}

.panel h2 {
  margin: 0;
  font-size: 17px;
}

.vpn-intro .intro-item {
  margin-top: 12px;
  padding: 10px;
  border-radius: 12px;
  background: linear-gradient(180deg, #f7f9ff 0%, #eef2ff 100%);
  border: 1px solid #e4eaff;
}

.vpn-intro .intro-item h3 {
  margin: 0;
  font-size: 15px;
  color: #3347d8;
}

.vpn-intro .intro-item p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #4f5d86;
}

.caps-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 8px;
}

.caps-grid article {
  text-align: center;
}

.caps-grid i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 18px;
  font-style: normal;
  background: #edf1ff;
}

.caps-grid span {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #546081;
}

.step-list {
  margin-top: 8px;
}

.step-list article {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
}

.step-list em {
  font-style: normal;
  width: 34px;
  height: 34px;
  border-radius: 17px;
  background: #ecefff;
  color: #4b5dfc;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.step-list h3 {
  margin: 1px 0 4px;
  font-size: 15px;
}

.step-list p {
  margin: 0;
  font-size: 13px;
  color: #5d6889;
}

.panel-rating .score {
  margin: 10px 0 0;
  color: #ffb400;
  font-size: 20px;
}

.panel-rating .score span {
  color: #3a4468;
  font-size: 14px;
}

.panel-rating .note {
  margin: 8px 0 0;
  color: #5c6785;
  font-size: 13px;
}

.btn-mini,
.btn-main {
  border: none;
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  background: linear-gradient(90deg, #2d8bff 0%, #6b59ff 100%);
  box-shadow: 0 8px 20px rgba(50, 82, 204, 0.3);
}

.btn-mini {
  border-radius: 20px;
  font-size: 12px;
  padding: 8px 12px;
}

.btn-main {
  width: 100%;
  margin-top: 12px;
  border-radius: 14px;
  font-size: 18px;
  padding: 14px 12px;
}

.download-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px 12px calc(env(safe-area-inset-bottom) + 8px);
  background: rgba(241, 244, 255, 0.94);
  border-top: 1px solid #dfe5ff;
}

.download-bar .btn-main {
  margin: 0 auto;
  max-width: 460px;
  display: block;
}

@media (min-width: 768px) {
  .page {
    padding-left: 0;
    padding-right: 0;
  }
}