:root {
  --bg: #f3f1ea;
  --bg-deep: #ece9e0;
  --ink: #141414;
  --muted: #5c5c57;
  --faint: #8a8a84;
  --line: rgba(20, 20, 20, 0.1);
  --card: #fffcf6;
  --accent: #141414;
  --shadow: 0 24px 60px rgba(20, 20, 20, 0.08);
  --radius: 22px;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

[data-lang="en"] {
  display: none;
}

html.lang-en [data-lang="zh"] {
  display: none;
}

html.lang-en [data-lang="en"] {
  display: revert;
}

html.lang-zh [data-lang="en"] {
  display: none;
}

html.lang-zh [data-lang="zh"] {
  display: revert;
}

html.lang-en .legal > [data-lang="en"],
html.lang-zh .legal > [data-lang="zh"] {
  display: block;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(20, 20, 20, 0.04), transparent 55%),
    var(--bg);
  font-family: "Outfit", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  font-feature-settings: "ss01" on, "cv11" on;
  line-height: 1.6;
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(243, 241, 234, 0.82);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.04em;
  font-size: 1.05rem;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 0 0 1px var(--line);
  background: #fff;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 0.92rem;
}

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

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

.hero {
  padding: 88px 0 72px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
}

h1 {
  margin: 14px 0 18px;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
  font-weight: 600;
}

.lede {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--ink);
}

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

.btn-solid {
  background: var(--ink);
  color: #f6f4ee;
}

.btn-ghost {
  background: transparent;
}

.icon-frame {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 36px;
  box-shadow: var(--shadow);
  padding: 42px;
  display: grid;
  place-items: center;
}

.icon-frame img {
  width: min(100%, 320px);
  border-radius: 28px;
}

.section {
  padding: 28px 0 84px;
}

.section h2 {
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.04em;
}

.section-lead {
  color: var(--muted);
  max-width: 40rem;
  margin-bottom: 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.num {
  font-family: "Instrument Serif", "Songti SC", serif;
  font-style: italic;
  font-size: 1.6rem;
  display: block;
  margin-bottom: 10px;
}

.band {
  background: var(--bg-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.band .wrap {
  padding: 64px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.band h2 {
  margin-top: 0;
}

.fine {
  color: var(--muted);
  font-size: 0.95rem;
}

.company {
  margin-top: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.legal {
  padding: 88px 0 96px;
}

.legal h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 8px;
}

.meta {
  color: var(--faint);
  font-size: 0.92rem;
  margin-bottom: 40px;
}

.legal-body h2 {
  margin-top: 2.2em;
  margin-bottom: 0.6em;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.legal-body p,
.legal-body li {
  color: #33332f;
}

.legal-body ul {
  padding-left: 1.2em;
}

.legal-body li + li {
  margin-top: 0.4em;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

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

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

  .hero {
    padding-top: 48px;
  }

  .icon-frame {
    padding: 28px;
  }

  nav {
    font-size: 0.85rem;
    gap: 8px 14px;
  }
}