:root {
  --bg: #fff9f0;
  --surface: #ffffff;
  --surface-soft: #f5e6d3;
  --text: #2c3e2d;
  --muted: #5a6b5c;
  --primary: #2d5a27;
  --secondary: #4a7c59;
  --accent: #e8a87c;
  --sky: #4a90d9;
  --line: rgba(74, 124, 89, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% -20%, #e3f2fd, var(--bg) 52%);
  line-height: 1.8;
}

a {
  color: inherit;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 249, 240, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: "Ma Shan Zheng", cursive;
  font-size: 1.55rem;
  text-decoration: none;
  color: var(--primary);
}

.menu {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 28px;
}

.menu a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
  position: relative;
}

.menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.28s ease;
}

.menu a:hover {
  color: var(--primary);
}

.menu a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
}

.hero {
  padding: 88px 0 92px;
}

.hero-content {
  text-align: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(227, 242, 253, 0.78));
  border: 1px solid rgba(135, 206, 235, 0.4);
  border-radius: 28px;
  padding: 60px 24px;
  box-shadow: 0 20px 35px rgba(45, 90, 39, 0.1);
}

.eyebrow {
  margin: 0;
  color: var(--sky);
  letter-spacing: 0.16em;
  font-size: 0.8rem;
}

h1 {
  margin: 14px 0 16px;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2rem, 5.2vw, 3.2rem);
  color: var(--primary);
  line-height: 1.35;
}

.subtitle {
  max-width: 720px;
  margin: 0 auto 30px;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 11px 28px;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(232, 168, 124, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(0.95);
}

.btn-secondary {
  border-color: var(--secondary);
  color: var(--secondary);
  background: transparent;
}

.btn-secondary:hover {
  background: #e8f5e9;
  border-color: var(--primary);
  color: var(--primary);
}

.section {
  padding: 64px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(227, 242, 253, 0.5), rgba(245, 230, 211, 0.42));
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.section-head h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  color: var(--primary);
  font-size: clamp(1.6rem, 3.8vw, 2rem);
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 16px;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 10px 24px rgba(43, 63, 44, 0.06);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 30px rgba(43, 63, 44, 0.1);
}

.card h3,
.card h4 {
  margin: 8px 0 6px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 12px;
  background: #e8f5e9;
  color: var(--secondary);
  font-size: 0.8rem;
}

.filters {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.84rem;
  color: var(--muted);
  cursor: pointer;
}

.chip.active {
  background: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
}

.meta {
  margin: 0;
  color: #8b9a8e;
  font-size: 0.85rem;
}

.search {
  width: min(340px, 100%);
  font: inherit;
  border: 1px solid rgba(74, 144, 217, 0.34);
  border-radius: 12px;
  padding: 10px 14px;
  background: #fff;
}

#contactForm {
  display: grid;
  gap: 10px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 500;
}

input,
textarea {
  font: inherit;
  border-radius: 12px;
  border: 1px solid rgba(74, 144, 217, 0.28);
  padding: 10px 12px;
  background: #fff;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

.hint {
  min-height: 20px;
  margin: 4px 0 0;
  color: var(--secondary);
  font-size: 0.9rem;
}

.footer {
  border-top: 1px solid var(--line);
  background: var(--surface-soft);
  text-align: center;
  color: var(--muted);
  padding: 16px 0;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: all 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .two-col,
  .three-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: block;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 10px;
    padding: 6px 12px;
    color: var(--primary);
  }

  .menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    background: rgba(255, 249, 240, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 14px 20px 18px;
    flex-direction: column;
    gap: 12px;
  }

  .menu.show {
    display: flex;
  }

  .hero {
    padding-top: 54px;
  }

  .hero-content {
    padding: 40px 16px;
  }
}