:root {
  color-scheme: light;
  --ink: #17213b;
  --muted: #65708a;
  --line: #dfe5ef;
  --soft: #f5f7fb;
  --brand: #3157d5;
  --brand-deep: #1d3da9;
  --accent: #21a179;
  --paper: #ffffff;
  --shadow: 0 20px 60px rgba(26, 43, 83, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(49, 87, 213, 0.11), transparent 28rem),
    linear-gradient(180deg, #fbfcff 0%, #f4f7fc 100%);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  color: var(--brand-deep);
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(223, 229, 239, 0.85);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--brand), #6b7ff0);
  box-shadow: 0 10px 24px rgba(49, 87, 213, 0.28);
  font-size: 14px;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: 520;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
  font-size: 14px;
}

.nav-links a {
  color: #46516b;
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  color: var(--brand);
}

.hero {
  padding: 104px 0 76px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 64px;
  align-items: center;
}

.hero-grid > *,
.legal-layout > * {
  min-width: 0;
}

.eyebrow,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(49, 87, 213, 0.18);
  border-radius: 999px;
  padding: 7px 13px;
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  font-weight: 650;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(33, 161, 121, 0.12);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

h1 {
  margin-top: 24px;
  max-width: 760px;
  font-size: clamp(42px, 6.5vw, 74px);
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
}

h3 {
  font-size: 20px;
}

.hero-copy {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: #fff;
  font-weight: 650;
  box-shadow: 0 6px 18px rgba(26, 43, 83, 0.07);
}

.button.primary {
  border-color: var(--brand);
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #5970e6);
}

.hero-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(223, 229, 239, 0.9);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.hero-card::after {
  content: "";
  position: absolute;
  right: -72px;
  bottom: -110px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(49, 87, 213, 0.22), transparent 68%);
}

.loop {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.loop-item {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: center;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
}

.loop-item span {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--brand-deep);
  background: #edf1ff;
  font-weight: 750;
  font-size: 13px;
}

.section {
  padding: 76px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading p,
.card p,
.notice p {
  color: var(--muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 35px rgba(26, 43, 83, 0.07);
}

.card .number {
  display: inline-block;
  margin-bottom: 34px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 750;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
}

.trust-item {
  padding: 24px;
  border-right: 1px solid var(--line);
}

.trust-item:last-child {
  border-right: 0;
}

.trust-item strong {
  display: block;
  margin-bottom: 6px;
}

.trust-item span {
  color: var(--muted);
  font-size: 14px;
}

.legal-hero {
  padding: 76px 0 38px;
}

.legal-hero h1 {
  font-size: clamp(38px, 6vw, 58px);
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
}

.legal-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
  padding-bottom: 84px;
}

.legal-toc {
  position: sticky;
  top: 98px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
}

.legal-toc strong {
  display: block;
  margin-bottom: 12px;
}

.legal-toc a {
  display: block;
  padding: 6px 0;
  color: var(--muted);
  font-size: 13px;
}

.legal-content {
  padding: 38px clamp(24px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(26, 43, 83, 0.08);
}

.legal-content section + section {
  margin-top: 38px;
  padding-top: 38px;
  border-top: 1px solid var(--line);
}

.legal-content h2 {
  margin-bottom: 16px;
  font-size: 25px;
  letter-spacing: -0.02em;
}

.legal-content h3 {
  margin: 24px 0 10px;
  font-size: 18px;
}

.legal-content p,
.legal-content li {
  color: #46516b;
}

.legal-content ul,
.legal-content ol {
  padding-left: 22px;
}

.notice {
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--brand);
  border-radius: 0 14px 14px 0;
  background: #f3f6ff;
}

.contact-box {
  padding: 24px;
  border: 1px solid rgba(33, 161, 121, 0.25);
  border-radius: 16px;
  background: #f0fbf7;
}

.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.disclaimer {
  max-width: 760px;
  margin-top: 18px;
  font-size: 12px;
}

@media (max-width: 860px) {
  .hero-grid,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .trust-strip {
    grid-template-columns: 1fr 1fr;
  }

  .legal-toc {
    position: static;
  }
}

@media (max-width: 620px) {
  .shell {
    width: auto;
    margin-right: 14px;
    margin-left: 14px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
    gap: 12px;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: 10px 16px;
    font-size: 13px;
  }

  .hero {
    padding-top: 64px;
  }

  .hero-grid {
    display: block;
  }

  .hero-grid > * {
    width: 100%;
    max-width: 100%;
  }

  .hero-card {
    margin-top: 48px;
  }

  h1 {
    font-size: 36px;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .hero-copy {
    font-size: 16px;
    word-break: break-all;
  }

  .grid-3,
  .trust-strip {
    grid-template-columns: 1fr;
  }

  .trust-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .trust-item:last-child {
    border-bottom: 0;
  }

  .legal-content {
    padding: 28px 20px;
  }
}