:root {
  --ink: #0a0a0a;
  --ink-2: #1a1a1a;
  --sand: #e8e4d9;
  --sand-2: #f3efe5;
  --accent: #5ccf6f;
  --moss: #3e5c45;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Sora", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", ui-sans-serif,
    system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--sand);
  color: var(--ink-2);
}

h1,
h2,
h3,
h4 {
  font-family: "Newsreader", "Sora", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
    ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(232, 228, 217, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 16px;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 20px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 700;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-links a {
  opacity: 0.7;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-menu {
  position: relative;
  display: none;
}

.nav-menu summary {
  list-style: none;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-toggle {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  background: rgba(255, 255, 255, 0.75);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--ink-2);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--ink-2);
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.nav-panel {
  position: absolute;
  right: 0;
  top: 52px;
  min-width: 220px;
  background: rgba(243, 239, 229, 0.98);
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 18px;
  padding: 14px;
  display: grid;
  gap: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.nav-panel-links {
  display: grid;
  gap: 8px;
}

.nav-panel a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
}

.nav-panel a:hover {
  background: rgba(0, 0, 0, 0.05);
}

.hero {
  padding: 96px 0 56px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 70% at 15% 15%, rgba(245, 242, 235, 0.9), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  gap: 28px;
}

.eyebrow {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-weight: 700;
  color: rgba(0, 0, 0, 0.5);
}

.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
}

.hero h1 {
  font-size: clamp(42px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0;
}

.hero p {
  font-size: 18px;
  max-width: 680px;
  line-height: 1.6;
  color: rgba(0, 0, 0, 0.6);
  margin: 0;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  font-weight: 700;
}

.section {
  padding: 48px 0;
}

.section h2 {
  font-size: 36px;
  margin: 0 0 14px;
}

.section p {
  margin: 0 0 28px;
  color: rgba(0, 0, 0, 0.6);
  max-width: 720px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 20px;
  padding: 18px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.card p {
  margin: 0;
  color: rgba(0, 0, 0, 0.6);
  font-size: 15px;
  line-height: 1.5;
}

.cta {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  background: var(--accent);
  color: #111;
}

.btn.secondary {
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.2);
  color: #111;
}

.note {
  font-size: 12px;
  color: rgba(0, 0, 0, 0.5);
  margin-top: 8px;
}

.footer {
  background: var(--moss);
  color: var(--sand);
  padding: 40px 0;
  margin-top: 64px;
}

.footer a {
  color: var(--sand);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }
  .nav-actions .nav-lang {
    display: none;
  }
  .nav-menu {
    display: block;
  }
}