:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --surface: rgba(255, 255, 255, 0.84);
  --text: #18181b;
  --muted: #68686f;
  --faint: #94949b;
  --line: rgba(24, 24, 27, 0.12);
  --accent: #7057d9;
  --accent-soft: rgba(112, 87, 217, 0.1);
  --shadow: 0 24px 70px rgba(24, 24, 27, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #08080a;
    --surface: rgba(22, 22, 26, 0.84);
    --text: #f4f4f5;
    --muted: #b2b2ba;
    --faint: #74747d;
    --line: rgba(244, 244, 245, 0.13);
    --accent: #a995ff;
    --accent-soft: rgba(169, 149, 255, 0.13);
    --shadow: 0 28px 80px rgba(0, 0, 0, 0.32);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 88% -8%, var(--accent-soft), transparent 34rem),
    var(--bg);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    "PingFang SC", "Noto Sans TC", "Hiragino Kaku Gothic ProN",
    "Noto Sans CJK", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

.shell {
  width: min(100%, 900px);
  margin: 0 auto;
  padding:
    max(20px, env(safe-area-inset-top))
    clamp(18px, 4vw, 42px)
    max(48px, env(safe-area-inset-bottom));
}

.topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 31%;
  object-fit: cover;
}

.language {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.language button {
  min-height: 32px;
  padding: 0 10px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}

.language button[aria-pressed="true"] {
  background: var(--text);
  color: var(--bg);
}

.document {
  padding: clamp(52px, 9vw, 86px) 0 38px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(40px, 8vw, 68px);
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  color: var(--faint);
  font-size: 13px;
}

.summary {
  margin: 34px 0 48px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  color: var(--muted);
  line-height: 1.75;
  box-shadow: var(--shadow);
}

.legal-section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.legal-section h2 {
  margin: 0 0 16px;
  font-size: clamp(22px, 4vw, 28px);
  letter-spacing: -0.025em;
}

.legal-section h3 {
  margin: 24px 0 10px;
  font-size: 17px;
}

.legal-section p,
.legal-section li {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.82;
}

.legal-section p {
  margin: 0 0 12px;
}

.legal-section ul {
  margin: 10px 0 14px;
  padding-left: 1.35em;
}

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

.operator {
  padding: 22px 24px;
  border-radius: 22px;
  background: var(--text);
  color: var(--bg);
}

.operator p,
.operator a {
  color: inherit;
}

.operator p {
  opacity: 0.78;
}

.operator strong {
  opacity: 1;
}

.locale[hidden] {
  display: none;
}

.page-links,
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 22px;
}

.page-links {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.page-links a {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}

footer {
  padding-top: 22px;
  color: var(--faint);
  font-size: 12px;
}

@media (max-width: 680px) {
  .topline {
    align-items: flex-start;
  }

  .language {
    max-width: 220px;
    border-radius: 18px;
  }

  .language button {
    min-height: 30px;
    padding: 0 8px;
    font-size: 12px;
  }
}

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