:root {
  --bg0: #eef3f8;
  --bg1: #e4ebf3;
  --ink: #152033;
  --ink-soft: #5c6b7e;
  --accent: #1f6f8b;
  --accent-deep: #15556b;
  --accent-soft: #d5eaf1;
  --surface: rgba(255, 255, 255, 0.82);
  --line: rgba(21, 32, 51, 0.08);
  --warn: #9a5b16;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Source Sans 3", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1100px 560px at 8% -12%, #c9dceb 0%, transparent 55%),
    radial-gradient(900px 480px at 100% 0%, #d9e8e4 0%, transparent 48%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

.wrap {
  width: min(880px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2.4rem 0 4rem;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 3rem;
  animation: rise 0.65s ease both;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
  color: inherit;
}

.brand img {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(31, 111, 139, 0.25);
}

.brand strong {
  font-family: Fraunces, Georgia, serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 1.15rem;
  font-weight: 600;
  font-size: 0.95rem;
}

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

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

.hero {
  display: grid;
  gap: 1rem;
  margin-bottom: 2.4rem;
  animation: rise 0.8s ease both;
}

.hero h1 {
  margin: 0;
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(2.5rem, 7vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  max-width: 11ch;
}

.hero p {
  margin: 0;
  max-width: 36rem;
  font-size: 1.12rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

.cta,
.cta-secondary {
  display: inline-flex;
  align-items: center;
  padding: 0.82rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 28px rgba(31, 111, 139, 0.28);
}

.cta:hover {
  transform: translateY(-2px);
  background: var(--accent-deep);
}

.cta-secondary {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

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

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 1.45rem 1.55rem;
  backdrop-filter: blur(10px);
  margin-bottom: 1rem;
  animation: rise 0.95s ease both;
}

.panel h1,
.panel h2 {
  margin: 0 0 0.7rem;
  font-family: Fraunces, Georgia, serif;
  letter-spacing: -0.02em;
}

.panel h1 { font-size: clamp(1.9rem, 4vw, 2.4rem); }
.panel h2 { font-size: 1.35rem; margin-top: 1.35rem; }
.panel h2:first-child { margin-top: 0; }

.meta {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0 0 1rem;
}

.panel p,
.panel li {
  color: var(--ink-soft);
  line-height: 1.55;
}

.panel ul {
  margin: 0.35rem 0 0;
  padding-left: 1.15rem;
}

.panel a { color: var(--accent); font-weight: 600; }

.zh {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.98rem;
}

footer {
  margin-top: 2.25rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  animation: rise 1.05s ease both;
}

footer a { color: inherit; }

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  header { flex-direction: column; align-items: flex-start; }
  .hero h1 { max-width: none; }
}