:root {
  --bg: #eef5fb;
  --surface: #ffffff;
  --surface-soft: #f4fafe;
  --text: #15324b;
  --muted: #5a7388;
  --line: #cfe7f8;
  --primary: #249dfa;
  --primary-deep: #249dfa;
  --shadow-soft: 0 10px 24px rgba(13, 62, 102, 0.06);
  --shadow: 0 18px 40px rgba(13, 62, 102, 0.08);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --wrap: min(1120px, calc(100vw - 20px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  overflow-x: hidden;
  background:
    radial-gradient(circle at top left, rgba(36, 157, 250, 0.12), transparent 28%),
    linear-gradient(180deg, #f8fbfe 0%, var(--bg) 100%);
}

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

a {
  color: inherit;
  text-decoration: none;
}

a,
button,
summary {
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.wrap {
  width: var(--wrap);
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 20px;
  background:
    radial-gradient(circle at 12% 16%, rgba(36, 157, 250, 0.22), transparent 18%),
    radial-gradient(circle at 26% 76%, rgba(36, 157, 250, 0.14), transparent 20%),
    radial-gradient(circle at 66% 30%, rgba(36, 157, 250, 0.12), transparent 18%),
    radial-gradient(circle at 86% 64%, rgba(36, 157, 250, 0.16), transparent 16%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.42;
  pointer-events: none;
}

.hero::before {
  top: -80px;
  left: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(36, 157, 250, 0.28), rgba(36, 157, 250, 0.04) 65%, transparent 72%);
}

.hero::after {
  right: -70px;
  top: 120px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(36, 157, 250, 0.22), rgba(36, 157, 250, 0.03) 66%, transparent 74%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
}

.hero__content::before,
.hero__content::after,
.hero__content .hero__bg-dot {
  content: "";
  position: absolute;
  display: block;
  border-radius: 50%;
  filter: blur(56px);
  pointer-events: none;
  z-index: 0;
}

.hero__content::before {
  right: 18%;
  bottom: 14%;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(36, 157, 250, 0.22), rgba(36, 157, 250, 0.03) 64%, transparent 72%);
}

.hero__content::after {
  right: 6%;
  top: 12%;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(36, 157, 250, 0.18), rgba(36, 157, 250, 0.03) 62%, transparent 70%);
}

.hero__content .hero__bg-dot {
  left: 8%;
  top: 34%;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(36, 157, 250, 0.2), rgba(36, 157, 250, 0.03) 64%, transparent 72%);
}

.info-panel,
.rate-card,
.feature-card,
.accordion,
.purchase,
.footer__inner {
  background:
    radial-gradient(circle at 14% 18%, rgba(36, 157, 250, 0.11), transparent 20%),
    radial-gradient(circle at 82% 74%, rgba(36, 157, 250, 0.08), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 254, 0.94)),
    rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(207, 231, 248, 0.96);
  box-shadow: var(--shadow-soft);
}

.feature-card:nth-child(2n) {
  background:
    radial-gradient(circle at 78% 20%, rgba(36, 157, 250, 0.14), transparent 20%),
    radial-gradient(circle at 18% 82%, rgba(36, 157, 250, 0.09), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 254, 0.94)),
    rgba(255, 255, 255, 0.94);
}

.rate-card {
  background:
    radial-gradient(circle at 84% 18%, rgba(36, 157, 250, 0.14), transparent 20%),
    radial-gradient(circle at 12% 78%, rgba(36, 157, 250, 0.1), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 254, 0.94)),
    rgba(255, 255, 255, 0.94);
}

.rate-card--accent {
  background:
    radial-gradient(circle at 16% 22%, rgba(255, 255, 255, 0.24), transparent 20%),
    radial-gradient(circle at 86% 78%, rgba(255, 255, 255, 0.18), transparent 18%),
    radial-gradient(circle at 58% 38%, rgba(255, 255, 255, 0.1), transparent 22%),
    linear-gradient(135deg, #249dfa, #249dfa);
}

.info-panel {
  background:
    radial-gradient(circle at 18% 18%, rgba(36, 157, 250, 0.11), transparent 20%),
    radial-gradient(circle at 82% 72%, rgba(36, 157, 250, 0.08), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 254, 0.94)),
    rgba(255, 255, 255, 0.94);
}

.accordion {
  background:
    radial-gradient(circle at 88% 24%, rgba(36, 157, 250, 0.12), transparent 18%),
    radial-gradient(circle at 12% 80%, rgba(36, 157, 250, 0.09), transparent 16%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(244, 250, 254, 0.95)),
    rgba(255, 255, 255, 0.94);
}

.purchase {
  background:
    radial-gradient(circle at 18% 22%, rgba(36, 157, 250, 0.14), transparent 20%),
    radial-gradient(circle at 86% 74%, rgba(36, 157, 250, 0.1), transparent 18%),
    radial-gradient(circle at 58% 52%, rgba(36, 157, 250, 0.07), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(244, 250, 254, 0.95)),
    rgba(255, 255, 255, 0.94);
}

.purchase__qr {
  background:
    radial-gradient(circle at 18% 18%, rgba(36, 157, 250, 0.12), transparent 20%),
    radial-gradient(circle at 82% 78%, rgba(36, 157, 250, 0.08), transparent 18%),
    linear-gradient(180deg, #f6fbff 0%, #eef7fe 100%);
}

.footer__inner {
  background:
    radial-gradient(circle at 24% 26%, rgba(36, 157, 250, 0.09), transparent 18%),
    radial-gradient(circle at 76% 70%, rgba(36, 157, 250, 0.07), transparent 16%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(244, 250, 254, 0.95)),
    rgba(255, 255, 255, 0.94);
}

.hero__content {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  max-width: 100%;
  box-shadow: var(--shadow);
  background:
    radial-gradient(circle at 14% 18%, rgba(36, 157, 250, 0.18), transparent 16%),
    radial-gradient(circle at 30% 78%, rgba(36, 157, 250, 0.14), transparent 18%),
    radial-gradient(circle at 62% 32%, rgba(36, 157, 250, 0.11), transparent 18%),
    radial-gradient(circle at 84% 66%, rgba(36, 157, 250, 0.13), transparent 16%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.97), rgba(244, 250, 254, 0.98)),
    rgba(255, 255, 255, 0.94);
}

.hero__content > * {
  position: relative;
  z-index: 1;
}

.hero__logo {
  width: 118px;
  margin-bottom: 16px;
  margin-left: auto;
  margin-right: auto;
  transform: translateX(-6px);
}

.hero__eyebrow,
.section-heading__label {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
}

.section-heading__label {
  color: #249dfa;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 1.15;
}

.hero h1 {
  font-size: clamp(2rem, 7vw, 3.8rem);
  letter-spacing: -0.02em;
}

.hero__lead,
.feature-card p,
.info-panel p,
.rate-card p,
.accordion p,
.purchase p,
.footer p,
.hero__fit-list,
.purchase__list,
.rate-list,
.check-list,
.section-intro,
.section-note {
  color: var(--muted);
  line-height: 1.75;
}

.hero__lead {
  margin: 16px 0 0;
  font-size: 0.98rem;
}

.hero__logo,
.hero__eyebrow,
.hero h1,
.hero__lead {
  text-align: center;
}

.hero__fit-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.hero__fit-list li {
  position: relative;
  min-height: 100%;
  padding: 11px 12px 11px 28px;
  font-size: 0.85rem;
  line-height: 1.45;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(36, 157, 250, 0.1);
  background:
    radial-gradient(circle at 16% 24%, rgba(36, 157, 250, 0.12), transparent 18%),
    radial-gradient(circle at 84% 76%, rgba(36, 157, 250, 0.08), transparent 16%),
    linear-gradient(180deg, #f8fbff 0%, #eef6fd 100%);
}

.hero__fit-list li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 19px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}

.hero__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
  width: 100%;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 0.96rem;
  font-weight: 700;
}

.button--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
}

.button--primary:hover {
  box-shadow: 0 10px 24px rgba(36, 157, 250, 0.22);
  transform: translateY(-1px);
}

.button--ghost {
  border: 1px solid var(--line);
  background: #fff;
}

.button--ghost:hover {
  color: var(--primary);
  border-color: rgba(36, 157, 250, 0.35);
  background: #f7fbff;
}

.section {
  padding: 20px 0;
}

.section--muted {
  background: linear-gradient(180deg, rgba(36, 157, 250, 0.05), rgba(36, 157, 250, 0.02));
}

.section-heading {
  max-width: 700px;
  margin-bottom: 16px;
  padding: 0 10px;
  text-align: left;
}

.rates-grid + .section-note {
  padding-left: 24px;
  padding-right: 24px;
}

#faq .section-heading,
.section:has(.rates-grid) .section-heading {
  padding-left: 24px;
  padding-right: 24px;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 5vw, 2.5rem);
  letter-spacing: -0.02em;
}

.wrap > .check-list,
.wrap > .accordion-list,
.wrap > .feature-grid,
.wrap > .rates-grid,
.two-column > div:first-child .check-list {
  padding-left: 10px;
  padding-right: 10px;
}

.feature-grid,
.rates-grid {
  display: grid;
  gap: 16px;
}

.feature-card,
.rate-card {
  padding: 22px 20px;
  border-radius: var(--radius-md);
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.feature-grid .feature-card {
  padding: 18px 16px;
}

.feature-grid .feature-card:last-child {
  grid-column: 1 / -1;
}

.feature-card h3,
.info-panel h3,
.rate-card h3 {
  margin: 0 0 7px;
  font-size: 1.04rem;
}

.feature-card p,
.info-panel p,
.rate-card p,
.accordion p,
.purchase p,
.purchase__list,
.rate-list,
.check-list,
.section-intro,
.section-note {
  margin: 0;
  font-size: 0.94rem;
}

.feature-card p {
  line-height: 1.6;
}

.two-column,
.purchase {
  display: grid;
  gap: 18px;
}

.purchase__content {
  display: grid;
  gap: 10px;
}

.check-list,
.purchase__list,
.rate-list {
  padding: 0;
  list-style: none;
}

.check-list li,
.purchase__list li,
.rate-list li {
  position: relative;
  padding-left: 20px;
}

.check-list li + li,
.purchase__list li + li,
.rate-list li + li {
  margin-top: 10px;
}

.check-list li::before,
.purchase__list li::before,
.rate-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  transform: translateY(-50%);
}

.info-panel {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.info-stats {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
}

.info-stats div {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.info-stats dt {
  margin-bottom: 6px;
  color: var(--primary-deep);
  font-size: 0.84rem;
  font-weight: 700;
}

.info-stats dd {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
}

.rate-card--accent {
  color: #fff;
  background:
    radial-gradient(circle at 16% 22%, rgba(255, 255, 255, 0.24), transparent 20%),
    radial-gradient(circle at 86% 78%, rgba(255, 255, 255, 0.18), transparent 18%),
    radial-gradient(circle at 58% 38%, rgba(255, 255, 255, 0.1), transparent 22%),
    linear-gradient(135deg, #249dfa, #249dfa);
}

.rate-card--accent p,
.rate-card--accent h3 {
  color: #fff;
}

.rate-card__value {
  margin-bottom: 10px;
  font-size: clamp(1.7rem, 6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.1;
}

.section-note {
  margin-top: 14px;
  font-size: 0.82rem;
  line-height: 1.6;
}

.accordion-list {
  display: grid;
  gap: 12px;
}

.accordion {
  padding: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.accordion[open] {
  border-color: rgba(36, 157, 250, 0.3);
  box-shadow: 0 14px 32px rgba(36, 157, 250, 0.08);
}

.accordion summary {
  position: relative;
  padding: 16px 52px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 700;
}

.accordion summary:hover {
  color: var(--primary);
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  color: var(--primary);
  font-size: 1.4rem;
  transform: translateY(-50%);
}

.accordion[open] summary::after {
  content: "-";
}

.accordion p {
  padding: 0 18px 16px;
}

.section--purchase {
  padding-bottom: 36px;
}

.purchase {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.purchase__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 18% 18%, rgba(36, 157, 250, 0.14), transparent 20%),
    radial-gradient(circle at 82% 78%, rgba(36, 157, 250, 0.1), transparent 18%),
    linear-gradient(180deg, #f6fbff 0%, #eef7fe 100%);
}

.purchase__qr img {
  width: min(100%, 320px);
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.promo-code {
  margin-top: 0;
  padding-left: 10px;
  padding-right: 10px;
}

.promo-code__label,
.promo-code__value,
.promo-code__note {
  margin: 0;
}

.purchase .promo-code__label {
  font-size: clamp(1.6rem, 5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
}

.purchase .promo-code__value {
  margin-top: 4px;
  font-size: clamp(2.2rem, 12vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--primary);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.purchase .promo-code__note {
  margin-top: 6px;
  font-size: 0.94rem;
  color: var(--muted);
}

.purchase .section-heading__label {
  color: #249dfa;
}

.purchase__list {
  margin-top: 12px;
  width: 100%;
  text-align: center;
}

.purchase__list li {
  padding-left: 0;
}

.purchase__list li::before {
  content: none;
}

@media (max-width: 759px) {
  .purchase__qr {
    width: 100%;
  }

  .purchase__qr img {
    width: min(100%, 280px);
  }

  .hero {
    background:
      radial-gradient(circle at 10% 14%, rgba(36, 157, 250, 0.38), transparent 28%),
      radial-gradient(circle at 24% 82%, rgba(36, 157, 250, 0.26), transparent 30%),
      radial-gradient(circle at 68% 28%, rgba(36, 157, 250, 0.22), transparent 28%),
      radial-gradient(circle at 88% 66%, rgba(36, 157, 250, 0.28), transparent 24%);
  }

  .hero__content {
    background:
      radial-gradient(circle at 14% 18%, rgba(36, 157, 250, 0.28), transparent 28%),
      radial-gradient(circle at 30% 78%, rgba(36, 157, 250, 0.22), transparent 30%),
      radial-gradient(circle at 62% 32%, rgba(36, 157, 250, 0.18), transparent 28%),
      radial-gradient(circle at 84% 66%, rgba(36, 157, 250, 0.2), transparent 24%),
      linear-gradient(135deg, rgba(255, 255, 255, 0.97), rgba(244, 250, 254, 0.99)),
      rgba(255, 255, 255, 0.94);
  }

  .hero__fit-list li {
    background:
      radial-gradient(circle at 16% 24%, rgba(36, 157, 250, 0.1), transparent 20%),
      radial-gradient(circle at 84% 76%, rgba(36, 157, 250, 0.07), transparent 18%),
      linear-gradient(180deg, #f8fbff 0%, #eef6fd 100%);
  }

  .info-panel,
  .feature-card,
  .rate-card,
  .accordion,
  .purchase,
  .footer__inner {
    background:
      radial-gradient(circle at 14% 18%, rgba(36, 157, 250, 0.16), transparent 24%),
      radial-gradient(circle at 82% 74%, rgba(36, 157, 250, 0.12), transparent 22%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(244, 250, 254, 0.95)),
      rgba(255, 255, 255, 0.94);
  }

  .purchase__qr {
    background:
      radial-gradient(circle at 18% 18%, rgba(36, 157, 250, 0.18), transparent 24%),
      radial-gradient(circle at 82% 78%, rgba(36, 157, 250, 0.14), transparent 22%),
      linear-gradient(180deg, #f6fbff 0%, #eef7fe 100%);
  }

  .rate-card--accent {
    background:
      radial-gradient(circle at 16% 22%, rgba(255, 255, 255, 0.24), transparent 20%),
      radial-gradient(circle at 86% 78%, rgba(255, 255, 255, 0.18), transparent 18%),
      radial-gradient(circle at 58% 38%, rgba(255, 255, 255, 0.1), transparent 22%),
      linear-gradient(135deg, #249dfa, #249dfa);
  }

  .rate-card--accent,
  .rate-card--accent p,
  .rate-card--accent h3 {
    color: #fff;
  }
}

.footer {
  padding: 0 0 28px;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border-radius: var(--radius-md);
}

.footer__inner img {
  width: 92px;
}

.footer p {
  margin: 0;
  font-size: 0.92rem;
}

@media (min-width: 760px) {
  .hero {
    padding: 36px 0 30px;
  }

  .two-column,
  .purchase,
  .rates-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-heading,
  .wrap > .check-list,
  .wrap > .accordion-list,
  .wrap > .feature-grid,
  .wrap > .rates-grid,
  .two-column > div:first-child .check-list,
  .rates-grid + .section-note {
    padding-left: 0;
    padding-right: 0;
  }

  #faq .section-heading,
  .section:has(.rates-grid) .section-heading,
  .rates-grid + .section-note {
    padding-left: 20px;
    padding-right: 20px;
  }

  .purchase__qr {
    min-height: 100%;
    justify-content: center;
  }

  .purchase__content {
    min-height: 100%;
  }

  .promo-code {
    padding-left: 0;
    padding-right: 0;
  }

  .purchase__list {
    text-align: center;
  }

  .purchase .promo-code__value {
    font-size: clamp(1.9rem, 5.8vw, 3rem);
  }
}

@media (min-width: 1024px) {
  .hero::before {
    top: -110px;
    left: 6%;
    width: 380px;
    height: 380px;
  }

  .hero::after {
    right: 2%;
    top: 90px;
    width: 420px;
    height: 420px;
  }

  .hero__content::before {
    right: 22%;
    bottom: 8%;
    width: 300px;
    height: 300px;
  }

  .hero__content::after {
    right: 8%;
    top: 14%;
    width: 190px;
    height: 190px;
  }

  .hero__content .hero__bg-dot {
    left: 10%;
    top: 40%;
    width: 280px;
    height: 280px;
  }

  .hero {
    background:
      radial-gradient(circle at 10% 14%, rgba(36, 157, 250, 0.26), transparent 20%),
      radial-gradient(circle at 24% 78%, rgba(36, 157, 250, 0.16), transparent 22%),
      radial-gradient(circle at 66% 28%, rgba(36, 157, 250, 0.14), transparent 20%),
      radial-gradient(circle at 88% 66%, rgba(36, 157, 250, 0.18), transparent 18%);
  }

  .hero__content {
    max-width: none;
    width: 100%;
    padding: 40px;
  }

  .hero__logo,
  .hero__eyebrow,
  .hero h1,
  .hero__lead {
    text-align: left;
  }

  .hero__logo {
    margin-left: 0;
    margin-right: 0;
    transform: none;
  }

  .hero__lead {
    font-size: 1rem;
  }

  .hero__fit-list {
    width: min(100%, 760px);
    gap: 10px;
  }

  .hero__fit-list li {
    font-size: 0.9rem;
    padding: 13px 14px 13px 30px;
  }

  .hero__actions {
    margin-top: 26px;
    width: min(100%, 520px);
    max-width: 520px;
  }

  .purchase__content {
    min-height: 100%;
    align-content: start;
    grid-template-rows: auto auto 1fr;
  }

  .purchase__qr .purchase__list {
    margin-top: 16px;
    text-align: center;
  }

  .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .feature-grid .feature-card {
    padding: 22px 20px;
  }

  .feature-grid .feature-card:last-child {
    grid-column: auto;
  }
}