@font-face {
  font-family: "Huansheng Rounded";
  src: url("./huansheng-rounded-bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
  unicode-range: U+58F0, U+5E7B;
}
:root {
  color-scheme: dark;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #f6f8ff;
  background: #111b32;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --ink: #f6f8ff;
  --muted: #b8c6da;
  --quiet: #91a5c2;
  --surface: #182641;
  --line: #344968;
  --accent: #7bd8ff;
  --accent-ink: #071a2e;
  --page: min(1160px, calc(100% - 40px));
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(
      circle at 80% 8%,
      rgba(53, 130, 196, 0.23),
      transparent 31rem
    ),
    #111b32;
}
a {
  color: inherit;
}
.site-header {
  width: var(--page);
  min-height: 84px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid rgba(184, 198, 218, 0.22);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: "Huansheng Rounded", "YouYuan", "Yuanti SC", sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}
.site-header nav,
.filings {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
}
.site-header nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}
.site-header nav a:hover,
.site-header nav a:focus-visible,
.filings a:hover,
.filings a:focus-visible {
  color: var(--ink);
}
main {
  overflow: hidden;
}
.hero,
.plans,
.guide,
.support {
  width: var(--page);
  margin: 0 auto;
}
.hero {
  min-height: 640px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  align-items: center;
  gap: clamp(42px, 8vw, 110px);
  padding: clamp(72px, 11vw, 136px) 0;
}
.hero-copy {
  max-width: 690px;
}
.hero-kicker {
  margin: 0 0 22px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}
h1,
h2,
h3,
p {
  text-wrap: pretty;
}
h1,
h2 {
  text-wrap: balance;
}
h1 {
  margin: 0;
  font-size: clamp(44px, 5.8vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}
.hero-intro {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.9;
}
.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  margin-top: 34px;
  padding: 0 24px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  text-decoration: none;
}
.primary-link:hover,
.primary-link:focus-visible {
  background: #a8e7ff;
}
.hero-mark {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 360px;
}
.hero-mark::before {
  content: "";
  position: absolute;
  width: min(31vw, 390px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(123, 216, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(123, 216, 255, 0.18);
}
.hero-mark img {
  position: relative;
  width: min(30vw, 360px);
  height: auto;
  filter: drop-shadow(0 12px 8px rgba(0, 0, 0, 0.2));
}
.plans,
.guide {
  padding: clamp(76px, 10vw, 120px) 0;
  border-top: 1px solid rgba(184, 198, 218, 0.18);
}
.section-heading {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(300px, 1.2fr);
  gap: 36px;
  align-items: end;
  margin-bottom: 44px;
}
.section-heading h2,
.support h2 {
  margin: 0;
  font-size: clamp(30px, 4.2vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.025em;
}
.section-heading p,
.support p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}
.plan-table {
  border-top: 1px solid var(--line);
}
.plan-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  align-items: center;
  min-height: 98px;
  padding: 0 clamp(18px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.plan-row strong {
  color: var(--ink);
  font-size: 22px;
}
.plan-head {
  min-height: 52px;
  color: var(--quiet);
  font-size: 13px;
}
.plan-row.featured {
  background: var(--surface);
}
.price {
  color: var(--ink);
}
.price b {
  margin-right: 5px;
  color: var(--accent);
  font-size: 32px;
}
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}
.steps li {
  min-height: 250px;
  padding: clamp(24px, 4vw, 38px);
  background: var(--surface);
}
.steps li > span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 42px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}
.steps h3,
.payment-note h3 {
  margin: 0 0 12px;
  font-size: 20px;
}
.steps p,
.payment-note p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}
.payment-note {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(280px, 1.45fr);
  gap: 28px;
  margin-top: 28px;
  padding: 28px clamp(24px, 4vw, 40px);
  background: #223555;
}
.support {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(44px, 8vw, 100px);
  align-items: start;
  padding: clamp(82px, 11vw, 132px) 0;
  border-top: 1px solid rgba(184, 198, 218, 0.18);
}
.support p {
  margin-top: 20px;
}
.contact-list {
  display: grid;
  border-top: 1px solid var(--line);
  font-style: normal;
}
.contact-list > * {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}
.contact-list span {
  color: var(--quiet);
}
.contact-list strong {
  font-size: 18px;
  overflow-wrap: anywhere;
}
footer {
  width: var(--page);
  margin: 0 auto;
  padding: 34px 0 40px;
  border-top: 1px solid rgba(184, 198, 218, 0.18);
  color: var(--quiet);
  font-size: 12px;
  line-height: 1.75;
}
.business {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-bottom: 18px;
}
.business strong {
  color: var(--muted);
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
}
.filings a {
  text-underline-offset: 3px;
}
@media (max-width: 760px) {
  :root {
    --page: min(100% - 32px, 1160px);
  }
  .site-header {
    min-height: 72px;
  }
  .site-header nav {
    display: none;
  }
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding: 72px 0 84px;
  }
  .hero-mark {
    min-height: 230px;
    order: -1;
  }
  .hero-mark::before,
  .hero-mark img {
    width: min(72vw, 290px);
  }
  .section-heading,
  .support,
  .payment-note {
    grid-template-columns: 1fr;
  }
  .section-heading {
    gap: 18px;
    margin-bottom: 32px;
  }
  .plan-row {
    grid-template-columns: 1fr 0.8fr 0.8fr;
    min-height: 84px;
    padding: 0 14px;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .steps li {
    min-height: auto;
  }
  .steps li > span {
    margin-bottom: 26px;
  }
  .footer-meta,
  .filings {
    align-items: flex-start;
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}