:root {
  --bg: #f2f5f4;
  --surface: #ffffff;
  --primary: #0f5b55;
  --primary-dark: #0c4843;
  --accent: #dca44c;
  --text: #1b2b2a;
  --muted: #5b6a68;
  --border: rgba(15, 91, 85, 0.15);
  --shadow: 0 28px 60px -40px rgba(10, 35, 32, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #e9f0ef 0%, #fdfcf9 60%, #f4f6f4 100%);
}

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

img {
  max-width: 100%;
}

.container {
  width: min(1140px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 251, 250, 0.95);
  border-bottom: 1px solid rgba(15, 91, 85, 0.08);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 0;
}

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

.logo-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(140deg, #0f5b55 0%, #258b7e 100%);
  position: relative;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.75);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
}

.brand-tag {
  font-size: 12px;
  color: var(--muted);
}

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.main-nav a {
  padding: 6px 0;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

.cta {
  border: 1px solid var(--primary);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
}

.hero {
  padding: 80px 0 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

.hero h1 {
  font-size: clamp(30px, 3.6vw, 46px);
  margin: 16px 0;
}

.lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin: 24px 0 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 28px -18px rgba(15, 91, 85, 0.6);
}

.button.ghost {
  border-color: var(--border);
  color: var(--primary-dark);
  background: #fff;
}

.button.slim {
  padding: 10px 16px;
  font-size: 13px;
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 20px -16px rgba(15, 91, 85, 0.6);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.stat {
  padding: 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(15, 91, 85, 0.08);
}

.stat-value {
  font-size: 18px;
  font-weight: 700;
}

.stat-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.hero-panel {
  position: relative;
}

.panel-card {
  background: linear-gradient(160deg, #0f5b55 0%, #0c3b37 100%);
  color: #fff;
  padding: 32px;
  border-radius: 24px;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 2;
}

.panel-card h2 {
  margin-top: 0;
  font-size: 20px;
}

.panel-title {
  font-size: 22px;
  font-weight: 700;
}

.panel-desc {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.6;
}

.panel-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 24px;
  display: grid;
  gap: 8px;
}

.panel-list li::before {
  content: "•";
  color: var(--accent);
  margin-right: 8px;
}

.panel-shadow {
  position: absolute;
  inset: 20px -30px -20px 20px;
  border-radius: 30px;
  background: rgba(15, 91, 85, 0.2);
  filter: blur(20px);
  z-index: 1;
}

.section {
  padding: 70px 0;
}

.section-header h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.section-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.cards {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border-radius: 18px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 12px 26px -30px rgba(15, 91, 85, 0.7);
}

.card h3 {
  margin-top: 0;
}

.highlight {
  background: linear-gradient(180deg, rgba(15, 91, 85, 0.05) 0%, rgba(220, 164, 76, 0.08) 100%);
}

.product-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.product-points {
  margin-top: 24px;
  display: grid;
  gap: 18px;
}

.point h4 {
  margin: 0 0 6px;
  font-size: 16px;
}

.product-panel {
  display: grid;
  gap: 18px;
}

.product-mock {
  background: var(--surface);
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px -30px rgba(15, 91, 85, 0.6);
  overflow: hidden;
}

.mock-header {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: #f6f8f7;
  border-bottom: 1px solid rgba(15, 91, 85, 0.08);
}

.mock-header span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(15, 91, 85, 0.25);
}

.mock-body {
  padding: 20px;
}

.mock-line {
  height: 10px;
  background: rgba(15, 91, 85, 0.18);
  border-radius: 999px;
  margin-bottom: 14px;
}

.mock-line.short {
  width: 60%;
}

.mock-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.mock-grid div {
  height: 36px;
  border-radius: 10px;
  background: rgba(15, 91, 85, 0.08);
}

.product-note {
  background: #0f5b55;
  color: #fff;
  border-radius: 18px;
  padding: 20px;
  display: grid;
  gap: 12px;
}

.capability-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.capability-item {
  background: var(--surface);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid rgba(15, 91, 85, 0.1);
}

.contact {
  background: #f7f8f5;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.contact-list {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

.contact-list span {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.contact-card {
  background: var(--surface);
  border-radius: 20px;
  padding: 26px;
  border: 1px solid rgba(15, 91, 85, 0.1);
  display: grid;
  gap: 16px;
}

.contact-simple {
  align-content: center;
  min-height: 180px;
}

.contact-title {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.contact-email {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  color: var(--primary);
}

.contact-card label {
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.contact-card input,
.contact-card textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(15, 91, 85, 0.2);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 14px;
}

.form-note {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.site-footer {
  padding: 24px 0 40px;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.fade-in {
  animation: fadeUp 0.8s ease both;
}

.fade-in:nth-of-type(2) {
  animation-delay: 0.1s;
}

.fade-in:nth-of-type(3) {
  animation-delay: 0.2s;
}

.fade-in:nth-of-type(4) {
  animation-delay: 0.3s;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    animation: none;
  }
}

@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .hero-grid,
  .product-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 680px) {
  .main-nav {
    flex-wrap: wrap;
    gap: 12px 16px;
  }

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

  .cards,
  .capability-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
  }
}