@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;600&family=Inter:wght@400;500;600&display=swap");

:root {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --accent: #4252ff;
  --accent-strong: #0c1030;
  --bg: #f5f4f0;
  --card: #fffdf8;
  --text: #1a1c23;
  --muted: #5c6070;
  --border: rgba(255, 255, 255, 0.4);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 20% 20%, #fffaf1, #f1f0ff 45%, #ebeef5);
  color: var(--text);
}

header,
main,
footer {
  width: min(1040px, 92vw);
  margin: 0 auto;
}

header {
  padding: 2.75rem 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
}

header a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

nav {
  display: flex;
  gap: 1.25rem;
}

nav a {
  font-size: 0.95rem;
  position: relative;
  padding-bottom: 0.25rem;
}

nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 -0.1rem;
  height: 2px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--accent);
  transition: transform 0.3s ease;
}

nav a:hover::after,
nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 4rem 0 5rem;
  position: relative;
  isolation: isolate;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  z-index: -1;
}

.hero::before {
  top: 15%;
  left: 5%;
  background: #bcc7ff;
}

.hero::after {
  bottom: 10%;
  right: 5%;
  background: #ffd7ba;
}

.hero h1 {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(2.8rem, 7vw, 4.6rem);
  margin: 1.25rem 0 0.75rem;
  letter-spacing: 0.15em;
  color: var(--accent-strong);
}

.hero p {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0.35rem 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.25rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
  color: var(--accent-strong);
  font-weight: 600;
  backdrop-filter: blur(6px);
  box-shadow: 0 10px 30px rgba(17, 17, 26, 0.08);
}

.card {
  background: var(--card);
  padding: clamp(2rem, 5vw, 3rem);
  border-radius: 1.75rem;
  box-shadow: 0 25px 80px rgba(15, 23, 42, 0.12);
  border: 1px solid var(--border);
}

.note {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  color: var(--muted);
}

.cta {
  margin-top: 2rem;
  display: inline-flex;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 20px 40px rgba(66, 82, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 50px rgba(66, 82, 255, 0.35);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.about-grid h3 {
  margin-bottom: 0.35rem;
  font-size: 1.15rem;
}

.meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.meta-list span {
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  padding: 2rem 0 3rem;
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

footer a {
  color: inherit;
}

.compliance {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  align-items: center;
}

@media (max-width: 640px) {
  header {
    flex-direction: column;
    gap: 1rem;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .card {
    padding: 1.5rem;
  }

  footer {
    flex-direction: column;
    text-align: center;
  }
}