:root {
  --color-bg: #ffffff;
  --color-surface: #f7fbff;
  --color-surface-strong: #eef6ff;
  --color-ink: #172033;
  --color-muted: #61708c;
  --color-border: #dbe6f4;
  --color-blue: #3a78f2;
  --color-violet: #7b6cf6;
  --color-mint: #5bbeb0;
  --shadow-soft: 0 18px 45px rgba(38, 75, 130, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
}

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

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

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-ink);
  min-width: 0;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 8px;
  background: #ffffff url("/assets/app-icon.png") center / cover no-repeat;
  color: transparent;
  font-weight: 700;
}

.brand-text {
  display: grid;
  gap: 0;
  min-width: 0;
}

.brand-text strong {
  font-size: 16px;
  line-height: 1.2;
}

.brand-text small {
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.2;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.5vw, 28px);
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 14px;
}

.site-nav a {
  color: var(--color-muted);
}

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

.hero {
  position: relative;
  overflow: hidden;
  min-height: min(72vh, 620px);
  padding: clamp(56px, 7vw, 96px) clamp(20px, 6vw, 88px);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(247, 251, 255, 0.96) 100%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--color-blue);
  font-size: 13px;
  font-weight: 700;
}

.hero h1,
.legal-hero h1 {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(48px, 9vw, 92px);
  line-height: 1;
  font-weight: 760;
}

.hero-subtitle {
  margin: 12px 0 0;
  color: var(--color-violet);
  font-size: clamp(20px, 3vw, 34px);
  font-weight: 650;
}

.hero-lead {
  margin: 24px 0 0;
  max-width: 600px;
  color: #31405b;
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 8px;
  font-weight: 700;
}

.primary-action {
  padding: 0 20px;
  background: var(--color-blue);
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(58, 120, 242, 0.22);
}

.primary-action:hover {
  background: #2868e4;
  text-decoration: none;
}

.secondary-action {
  color: var(--color-ink);
}

.section {
  padding: clamp(56px, 7vw, 88px) clamp(20px, 6vw, 88px);
}

.intro-section,
.contact-section {
  background: var(--color-surface);
}

.section-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.two-column,
.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}

.section h2 {
  margin: 0;
  max-width: 740px;
  font-size: clamp(28px, 4.2vw, 46px);
  line-height: 1.16;
}

.section p {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--color-muted);
}

.info-list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.info-list div {
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
}

.info-list dt {
  color: var(--color-muted);
  font-size: 13px;
}

.info-list dd {
  margin: 6px 0 0;
  color: var(--color-ink);
  font-weight: 700;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.feature-card {
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
}

a.feature-card {
  display: block;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

a.feature-card:hover {
  text-decoration: none;
  border-color: var(--color-blue);
  box-shadow: var(--shadow-soft);
}

.feature-index {
  color: var(--color-mint);
  font-size: 13px;
  font-weight: 800;
}

.feature-card h3 {
  margin: 18px 0 8px;
  font-size: 20px;
}

.feature-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 15px;
}

.contact-inner {
  align-items: center;
}

.contact-mail {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  min-height: 56px;
  padding: 0 22px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--color-ink);
  font-weight: 800;
  box-shadow: var(--shadow-soft);
  overflow-wrap: anywhere;
}

.legal-page {
  background: var(--color-bg);
}

.legal-hero {
  padding: clamp(52px, 7vw, 88px) clamp(20px, 6vw, 88px);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.legal-hero > * {
  width: min(900px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.legal-hero h1 {
  font-size: clamp(38px, 7vw, 72px);
}

.legal-hero p:not(.eyebrow) {
  margin-top: 14px;
  color: var(--color-muted);
}

.effective-date {
  font-weight: 700;
}

.legal-content {
  width: min(900px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(42px, 6vw, 72px) 0;
}

.legal-content section + section {
  margin-top: 34px;
}

.legal-content h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.25;
}

.legal-content p,
.legal-content li {
  color: #394963;
}

.legal-content p {
  margin: 0;
}

.legal-content ul {
  margin: 12px 0 0;
  padding-left: 1.25em;
}

.legal-content li + li {
  margin-top: 8px;
}

.legal-content h3 {
  margin: 24px 0 8px;
  font-size: clamp(18px, 2.4vw, 21px);
  line-height: 1.3;
}

.legal-content p + p {
  margin-top: 12px;
}

.legal-content .emphasis {
  color: var(--color-ink);
  font-weight: 700;
}

.legal-record {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.legal-record + .legal-record {
  margin-top: 14px;
}

.legal-record h3 {
  margin-top: 0;
}

.legal-record p + p {
  margin-top: 8px;
}

.legal-record strong {
  color: var(--color-ink);
}

.legal-content ol {
  margin: 12px 0 0;
  padding-left: 1.4em;
}

.legal-content ol li + li {
  margin-top: 8px;
}

.legal-lead {
  margin: 0 0 8px;
  color: #31405b;
  font-size: 17px;
}

.legal-meta {
  width: min(900px, 100%);
  margin: 18px auto 0;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.legal-meta div {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
}

.legal-meta dt {
  margin: 0;
  color: var(--color-muted);
  font-size: 13px;
}

.legal-meta dd {
  margin: 4px 0 0;
  color: var(--color-ink);
  font-weight: 700;
  font-size: 15px;
  overflow-wrap: anywhere;
}

.note {
  margin-top: 14px;
  padding: 14px 16px;
  border-left: 3px solid var(--color-blue);
  border-radius: 0 8px 8px 0;
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 14px;
}

.table-wrap {
  margin-top: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.legal-content table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

.legal-content th,
.legal-content td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}

.legal-content th:last-child,
.legal-content td:last-child {
  border-right: none;
}

.legal-content tbody tr:last-child th,
.legal-content tbody tr:last-child td {
  border-bottom: none;
}

.legal-content thead th {
  background: var(--color-surface-strong);
  color: var(--color-ink);
  font-weight: 700;
  white-space: nowrap;
}

.legal-content tbody th {
  font-weight: 700;
  background: var(--color-surface);
  color: var(--color-ink);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding: 28px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--color-muted);
}

@media (max-width: 920px) {
  .hero {
    align-items: flex-start;
    min-height: 0;
  }

  .hero-copy {
    width: 100%;
  }

  .two-column,
  .contact-inner {
    grid-template-columns: 1fr;
  }

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

  .contact-mail {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 0;
  }

  .site-footer {
    flex-direction: column;
  }
}