:root {
  --bg: #f4f7f2;
  --bg-accent: #dff3e7;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --surface-dark: #10261d;
  --text: #173126;
  --muted: #5f746b;
  --line: rgba(23, 49, 38, 0.12);
  --primary: #19764d;
  --primary-strong: #0f5b39;
  --accent: #dff06b;
  --accent-deep: #b8d83a;
  --shadow: 0 24px 60px rgba(18, 43, 31, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --content-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Trebuchet MS", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(223, 240, 107, 0.35), transparent 34%),
    radial-gradient(circle at right 12% top 20%, rgba(25, 118, 77, 0.18), transparent 28%),
    linear-gradient(180deg, #f7fbf4 0%, #edf5ef 48%, #f7f5ef 100%);
  line-height: 1.65;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.site-shell {
  position: relative;
  overflow: hidden;
}

.site-shell::before,
.site-shell::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(8px);
  pointer-events: none;
}

.site-shell::before {
  width: 260px;
  height: 260px;
  top: 90px;
  left: -90px;
  background: rgba(184, 216, 58, 0.18);
}

.site-shell::after {
  width: 360px;
  height: 360px;
  top: 420px;
  right: -160px;
  background: rgba(25, 118, 77, 0.12);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(247, 251, 244, 0.8);
  border-bottom: 1px solid rgba(23, 49, 38, 0.08);
}

.nav-wrap,
.section,
.site-footer-inner {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

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

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.brand-mark {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
}

.brand-name {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.nav-links a {
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.96rem;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--text);
  background: rgba(25, 118, 77, 0.08);
  transform: translateY(-1px);
}

.nav-links .active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);
  box-shadow: 0 12px 24px rgba(15, 91, 57, 0.24);
}

.section {
  position: relative;
  padding: 32px 0;
}

.hero {
  padding-top: 34px;
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.9fr);
  gap: 28px;
  align-items: center;
  padding: 30px;
  background:
    linear-gradient(135deg, rgba(16, 38, 29, 0.98) 0%, rgba(17, 64, 46, 0.94) 56%, rgba(22, 92, 63, 0.9) 100%),
    linear-gradient(180deg, rgba(223, 240, 107, 0.12), rgba(223, 240, 107, 0));
  color: #f7fff7;
  border-radius: 34px;
  box-shadow: 0 28px 80px rgba(16, 38, 29, 0.28);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(223, 240, 107, 0.14);
  color: var(--accent);
}

.hero h1,
.page-hero h1 {
  margin: 16px 0 12px;
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: clamp(2.3rem, 5.4vw, 4.3rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-lead,
.page-hero p,
.section-intro {
  margin: 0;
  font-size: 1.05rem;
  color: rgba(247, 255, 247, 0.82);
}

.hero-actions,
.cta-row,
.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.button,
.button-secondary,
.button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.button {
  color: #10261d;
  background: linear-gradient(135deg, var(--accent) 0%, #ecf7a1 100%);
  box-shadow: 0 16px 34px rgba(223, 240, 107, 0.28);
}

.button-secondary {
  color: #f7fff7;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.button-ghost {
  color: var(--primary);
  background: rgba(25, 118, 77, 0.08);
}

.button:hover,
.button-secondary:hover,
.button-ghost:hover,
.button:focus,
.button-secondary:focus,
.button-ghost:focus {
  transform: translateY(-2px);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.hero-meta .meta-card,
.metric,
.feature-card,
.info-card,
.product-card,
.faq-card,
.support-card,
.download-card,
.privacy-card,
.highlight-card,
.testimonial-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
}

.hero-meta .meta-card {
  padding: 14px;
}

.meta-label,
.card-label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(247, 255, 247, 0.6);
  margin-bottom: 6px;
}

.meta-value,
.card-value {
  display: block;
  font-size: 1.12rem;
  font-weight: 700;
  color: #ffffff;
}

.phone-frame {
  width: min(100%, 340px);
  margin: 0 auto;
  padding: 14px;
  border-radius: 34px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.24) 0%, rgba(255, 255, 255, 0.08) 100%);
  box-shadow: 0 20px 40px rgba(8, 18, 14, 0.34);
}

.phone-screen {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  background: #ffffff;
}

.phone-screen img {
  width: 100%;
  height: auto;
}

.screen-caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(16, 38, 29, 0.76);
  color: #f7fff7;
  font-size: 0.92rem;
  backdrop-filter: blur(8px);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.section-header h2,
.content-card h2,
.page-hero h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.15;
}

.section-header p,
.page-hero .section-intro,
.content-card p,
.support-card p,
.download-card p,
.privacy-card p,
.product-card p,
.faq-card p,
.testimonial-card p,
.highlight-card p {
  margin: 0;
  color: var(--muted);
}

.surface-panel,
.content-card,
.page-hero,
.download-hero,
.privacy-hero {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(18px);
}

.content-card,
.page-hero,
.download-hero,
.privacy-hero {
  padding: 26px;
}

.feature-grid,
.metrics-grid,
.highlight-grid,
.products-grid,
.support-grid,
.download-grid,
.privacy-grid,
.testimonial-grid {
  display: grid;
  gap: 18px;
}

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

.metrics-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.highlight-grid,
.products-grid,
.support-grid,
.download-grid,
.privacy-grid,
.testimonial-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card,
.metric,
.highlight-card,
.product-card,
.support-card,
.download-card,
.privacy-card,
.testimonial-card {
  padding: 22px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  box-shadow: 0 18px 34px rgba(18, 43, 31, 0.08);
}

.feature-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 251, 246, 0.98) 100%);
}

.feature-card h3,
.highlight-card h3,
.product-card h3,
.support-card h3,
.download-card h3,
.privacy-card h3,
.faq-card h3,
.testimonial-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  line-height: 1.35;
}

.feature-index,
.product-tag,
.info-tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  font-size: 0.84rem;
  font-weight: 700;
}

.feature-index,
.product-tag {
  color: var(--primary);
  background: rgba(25, 118, 77, 0.08);
}

.metric strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--primary-strong);
}

.metric span {
  color: var(--muted);
}

.highlight-grid .highlight-card:first-child {
  background: linear-gradient(135deg, #10261d 0%, #184734 100%);
  color: #f7fff7;
}

.highlight-grid .highlight-card:first-child p,
.highlight-grid .highlight-card:first-child ul,
.highlight-grid .highlight-card:first-child li,
.highlight-grid .highlight-card:first-child .list {
  color: rgba(247, 255, 247, 0.82);
}

.list,
.faq-list,
.inline-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li,
.faq-list li {
  position: relative;
  padding-left: 18px;
  margin-top: 10px;
  color: var(--muted);
}

.list li::before,
.faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-deep);
}

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

.inline-list li {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--primary-strong);
  background: rgba(25, 118, 77, 0.08);
  font-size: 0.92rem;
  font-weight: 700;
}

.download-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.download-link,
.text-link {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

.download-link:hover,
.text-link:hover {
  color: var(--primary-strong);
}

.faq-card {
  padding: 22px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.faq-card + .faq-card {
  margin-top: 14px;
}

.faq-card p {
  margin-top: 8px;
}

.site-footer {
  padding: 8px 0 34px;
}

.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 26px;
  color: var(--muted);
}

.site-footer-inner a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

.page-hero,
.download-hero,
.privacy-hero {
  display: grid;
  gap: 20px;
}

.privacy-grid .privacy-card {
  min-height: 100%;
}

.notice {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 16px;
  background: rgba(25, 118, 77, 0.08);
  color: var(--primary-strong);
}

@media (max-width: 960px) {
  .hero-card,
  .feature-grid,
  .metrics-grid,
  .highlight-grid,
  .products-grid,
  .support-grid,
  .download-grid,
  .privacy-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

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

  .section-header,
  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .nav-wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
  }

  .hero-card,
  .content-card,
  .page-hero,
  .download-hero,
  .privacy-hero,
  .feature-card,
  .metric,
  .highlight-card,
  .product-card,
  .support-card,
  .download-card,
  .privacy-card,
  .testimonial-card,
  .faq-card,
  .site-footer-inner {
    padding: 22px;
  }

  .section,
  .hero {
    padding-top: 24px;
    padding-bottom: 24px;
  }

  .nav-wrap,
  .section,
  .site-footer-inner {
    width: min(calc(100% - 24px), var(--content-width));
  }
}

@media (max-width: 480px) {
  .hero h1,
  .page-hero h1 {
    font-size: 2.2rem;
  }

  .button,
  .button-secondary,
  .button-ghost {
    width: 100%;
  }

  .nav-links {
    gap: 8px;
  }

  .nav-links a {
    width: calc(50% - 4px);
    text-align: center;
  }
}