:root {
  color-scheme: light;
  --paper: #f5f3ee;
  --paper-strong: #ebe8df;
  --ink: #151a20;
  --muted: #5d6670;
  --line: rgba(21, 26, 32, 0.14);
  --accent: #2457d6;
  --accent-strong: #173c9a;
  --card: rgba(255, 255, 255, 0.72);
  --shadow: 0 24px 72px rgba(21, 26, 32, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 88% 2%, rgba(36, 87, 214, 0.12), transparent 30rem),
    var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "PingFang TC", "Noto Sans TC", sans-serif;
  text-rendering: optimizeLegibility;
}

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

a:hover {
  color: var(--accent);
}

a:focus-visible {
  outline: 3px solid rgba(36, 87, 214, 0.32);
  outline-offset: 4px;
  border-radius: 6px;
}

.shell {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 1.05rem;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--ink);
  color: white;
  font-size: 0.8rem;
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(21, 26, 32, 0.18);
}

.site-header nav,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero {
  min-height: 590px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 70px;
  align-items: center;
  padding: 82px 0 96px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.76rem;
  font-weight: 720;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 26px;
  font-size: clamp(3.2rem, 7vw, 6.4rem);
  line-height: 0.95;
  letter-spacing: -0.07em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.75rem, 3.5vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h3 {
  margin: 26px 0 10px;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.lede,
.legal-hero > p,
.legal-content p,
.legal-content li,
.support-card p,
.site-footer p {
  color: var(--muted);
  line-height: 1.78;
}

.lede {
  max-width: 680px;
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.56);
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
  box-shadow: 0 14px 30px rgba(36, 87, 214, 0.24);
}

.button.primary:hover {
  background: var(--accent-strong);
  color: white;
}

.flow-card {
  min-height: 390px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 38px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(227, 234, 252, 0.82));
  box-shadow: var(--shadow);
}

.flow-mark {
  width: 96px;
  height: 96px;
  display: grid;
  place-items: center;
  border-radius: 27px;
  background: var(--ink);
  color: white;
  font-size: 1.1rem;
  font-weight: 820;
  letter-spacing: -0.04em;
  box-shadow: 0 20px 42px rgba(21, 26, 32, 0.22);
}

.flow-steps {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 42px 0 16px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.72rem;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.flow-steps i {
  color: var(--accent);
  font-style: normal;
}

.flow-card > p {
  margin-bottom: 0;
  color: var(--muted);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.support-card {
  min-height: 250px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
}

.support-card .number {
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.75rem;
}

.support-card h2 {
  margin-top: 34px;
  font-size: 1.35rem;
}

.legal-hero {
  max-width: 820px;
  padding: 76px 0 64px;
}

.legal-hero h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
}

.legal-hero time {
  display: block;
  margin-top: 26px;
  color: var(--muted);
  font-size: 0.9rem;
}

.legal-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 68px;
  align-items: start;
  padding: 0 0 92px;
}

.legal-index {
  position: sticky;
  top: 24px;
  display: grid;
  gap: 13px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.45);
  color: var(--muted);
  font-size: 0.86rem;
}

.legal-index strong {
  margin-bottom: 4px;
  color: var(--ink);
}

.legal-content {
  min-width: 0;
}

.legal-content > section {
  padding: 0 0 42px;
  scroll-margin-top: 24px;
}

.legal-content > section + section {
  padding-top: 42px;
  border-top: 1px solid var(--line);
}

.legal-content ul {
  padding-left: 1.25rem;
}

.legal-content li + li {
  margin-top: 10px;
}

.legal-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.language-block {
  margin-top: 30px;
  padding: 34px;
  border-radius: 24px;
  background: var(--ink);
  color: white;
}

.language-block h2,
.language-block h3 {
  color: white;
}

.language-block p,
.language-block li {
  color: rgba(255, 255, 255, 0.74);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: end;
  padding: 38px 0 46px;
  border-top: 1px solid var(--line);
}

.site-footer strong {
  font-size: 1.05rem;
}

.site-footer p {
  margin: 7px 0 0;
  font-size: 0.88rem;
}

.copyright {
  grid-column: 1 / -1;
}

@media (max-width: 800px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 44px;
    padding: 64px 0 80px;
  }

  .flow-card {
    min-height: 330px;
  }

  .support-grid {
    grid-template-columns: 1fr;
    padding: 72px 0;
  }

  .legal-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .legal-index {
    position: static;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(100% - 28px, 1080px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }

  .site-header nav {
    gap: 14px;
  }

  h1 {
    font-size: clamp(2.8rem, 15vw, 4.2rem);
  }

  .flow-card,
  .language-block {
    padding: 26px;
  }

  .flow-steps {
    gap: 8px;
    font-size: 0.64rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .copyright {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}