:root {
  --bg: #f1eee6;
  --panel: #fdfcf7;
  --ink: #13201d;
  --muted: #4f5f5a;
  --accent: #0f5f57;
  --accent-2: #e67d2f;
  --line: #d7d2c4;
  --shadow: 0 18px 40px rgba(19, 32, 29, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 8%, #f8f5ec 0, #f1eee6 45%, #ede9db 100%);
  line-height: 1.65;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(19, 32, 29, 0.06) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: 0.1;
  z-index: -1;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(241, 238, 230, 0.85);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--accent), #1f8c80);
  box-shadow: 0 0 0 5px rgba(15, 95, 87, 0.18);
}

nav {
  display: flex;
  gap: 24px;
}

nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.96rem;
  position: relative;
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
}

nav a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  padding: 8px 14px;
  color: var(--ink);
  font-weight: 600;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
  font-size: 0.78rem;
}

.hero h1 {
  margin: 0 0 12px;
  line-height: 1.14;
  font-size: clamp(2rem, 4.2vw, 3.5rem);
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
}

.lead {
  margin: 0 0 24px;
  color: var(--muted);
  max-width: 640px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 11px 18px;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
}

.btn-solid {
  background: linear-gradient(135deg, var(--accent), #1b7f74);
  color: #f4fbfa;
  box-shadow: 0 10px 26px rgba(15, 95, 87, 0.26);
}

.btn-solid:hover {
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--accent);
  border-color: rgba(15, 95, 87, 0.45);
  background: rgba(15, 95, 87, 0.08);
}

.hero-panel {
  padding: 22px;
  border-radius: 18px;
  background: linear-gradient(160deg, #162e2a 0%, #20403a 70%);
  color: #ecf7f4;
  box-shadow: var(--shadow);
}

.hero-panel h2 {
  margin-top: 0;
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
}

.hero-panel ul {
  margin: 0;
  padding-left: 18px;
  color: #d9ebe7;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}

.stats article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}

.kpi {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--accent);
}

.label {
  margin: 4px 0 0;
  color: var(--muted);
}

.section {
  padding: 48px 0;
}

.section-head h2 {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
}

.about-card,
.news-card,
.contact-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.note {
  color: var(--muted);
  padding: 10px 12px;
  border-left: 3px solid var(--accent-2);
  background: rgba(230, 125, 47, 0.08);
  border-radius: 8px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
}

.timeline-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.timeline-item .date,
.news-card .date {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
}

.timeline-item h3,
.news-card h3 {
  margin: 8px 0 8px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 14px;
}

.service-grid article {
  background: linear-gradient(160deg, #fbfaf5 0%, #f2eee3 100%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 18px;
}

.lead-form {
  display: grid;
  gap: 10px;
}

input,
textarea {
  width: 100%;
  border: 1px solid #c7c1b3;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: #fffdf8;
}

textarea {
  resize: vertical;
}

.site-footer {
  padding: 30px 0 48px;
  border-top: 1px solid var(--line);
  background: #e8e4d7;
}

.site-footer h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.site-footer ul {
  margin-top: 0;
  padding-left: 18px;
}

.site-footer a {
  color: #093d38;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.delay-1 {
  transition-delay: 0.12s;
}

.delay-2 {
  transition-delay: 0.22s;
}

@media (max-width: 920px) {
  .hero-grid,
  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .service-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    display: none;
    flex-direction: column;
    gap: 0;
    background: rgba(241, 238, 230, 0.98);
    border-bottom: 1px solid var(--line);
  }

  nav a {
    padding: 12px 4vw;
    border-top: 1px solid var(--line);
  }

  nav.open {
    display: flex;
  }
}

@media (max-width: 580px) {
  .service-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 54px;
  }
}