:root {
  --brand: #00c853;
  --brand-dark: #009624;
  --text: #1a1d21;
  --muted: #5f6368;
  --bg: #f8faf9;
  --card: #ffffff;
  --border: #e8ecea;
  --max: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a { color: var(--brand-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

header.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: block;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

nav.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 15px;
}

nav.main-nav a {
  color: var(--muted);
  text-decoration: none;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--brand-dark);
  font-weight: 600;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
  text-decoration: none;
}

.btn-outline {
  background: #fff;
  color: var(--brand-dark);
  border: 2px solid var(--brand);
}

.btn-outline:hover { text-decoration: none; }

.hero {
  background: linear-gradient(160deg, #e8f5e9 0%, #f8faf9 55%, #fff 100%);
  padding: 56px 20px 64px;
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: #fff;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero p.lead {
  font-size: 17px;
  color: var(--muted);
  margin-bottom: 28px;
}

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

.hero-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border);
}

.hero-card h3 { margin-bottom: 16px; font-size: 18px; }

.feature-list { list-style: none; }

.feature-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}

.feature-list li:last-child { border-bottom: none; }

section.block {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 20px;
}

section.block h2 {
  font-size: 28px;
  text-align: center;
  margin-bottom: 12px;
}

section.block .sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 36px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--brand-dark);
}

.card p { color: var(--muted); font-size: 15px; }

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.step {
  text-align: center;
  padding: 20px 12px;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.product-showcase {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.showcase-item {
  background: var(--bg);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
}

.showcase-item h4 { margin-bottom: 8px; }

.showcase-item ul {
  margin-left: 18px;
  color: var(--muted);
  font-size: 14px;
}

.page-main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px 20px 64px;
}

.page-main h1 {
  font-size: 32px;
  margin-bottom: 8px;
}

.page-main .updated {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}

.legal-content h2 {
  font-size: 20px;
  margin: 28px 0 12px;
  color: var(--brand-dark);
}

.legal-content p,
.legal-content li {
  color: #333;
  margin-bottom: 12px;
  font-size: 15px;
}

.legal-content ul {
  margin: 0 0 16px 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

footer.site-footer {
  background: #1a1d21;
  color: #b0b4b8;
  padding: 40px 20px 24px;
  font-size: 14px;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 28px;
}

.footer-grid h4 {
  color: #fff;
  margin-bottom: 12px;
  font-size: 15px;
}

.footer-grid a { color: #b0b4b8; }
.footer-grid a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 20px;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .hero-inner,
  .grid-3,
  .steps,
  .showcase-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  nav.main-nav { display: none; }

  .header-inner .btn { font-size: 13px; padding: 10px 16px; }
}