:root {
  --bg: #f4f6ee;
  --surface: rgba(255, 255, 255, 0.84);
  --ink: #131d15;
  --muted: #5f6f61;
  --brand: #0f7a48;
  --brand-2: #0d9c6d;
  --accent: #d69f3f;
  --line: #d9e1d5;
  --shadow: 0 18px 45px rgba(17, 34, 23, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 8% 4%, #f7fce4 0%, transparent 38%),
    radial-gradient(circle at 88% 14%, #e2f7f0 0%, transparent 40%),
    var(--bg);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

h1,
h2,
h3,
.navbar-brand,
.eyebrow {
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  letter-spacing: 0.01em;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(6px);
  z-index: -1;
  opacity: 0.5;
}

.orb-1 {
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(30, 150, 95, 0.3), rgba(30, 150, 95, 0));
  left: -120px;
  top: -100px;
}

.orb-2 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(214, 159, 63, 0.25), rgba(214, 159, 63, 0));
  right: -120px;
  top: 220px;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav-shell {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 8px 28px rgba(14, 38, 25, 0.14);
}

.navbar-brand {
  font-weight: 700;
  color: var(--ink);
  font-size: 1.1rem;
}

.navbar-brand:hover {
  color: var(--brand);
}

.nav-links {
  gap: 8px;
}

.nav-link {
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--brand);
  background: rgba(15, 122, 72, 0.09);
}

.nav-cta {
  margin-left: 12px;
}

.section {
  padding-top: 68px;
  padding-bottom: 8px;
}

.eyebrow {
  text-transform: uppercase;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--brand);
  margin-bottom: 8px;
}

.section-header {
  margin-bottom: 20px;
}

.section-header h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  margin-bottom: 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 20px;
  align-items: stretch;
  padding-top: 54px;
}

.hero-content,
.hero-panel {
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 34px);
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.12;
  margin-bottom: 14px;
}

.subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 64ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  border-radius: 999px;
  font-weight: 600;
  padding: 10px 18px;
  border-width: 1px;
}

.btn-primary-gradient {
  color: #fff;
  border: none;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
  box-shadow: 0 12px 22px rgba(15, 122, 72, 0.3);
}

.btn-primary-gradient:hover,
.btn-primary-gradient:focus {
  color: #fff;
  background: linear-gradient(120deg, #0e6a3f, #0b8c60);
}

.btn-outline-ink {
  color: var(--ink);
  border: 1px solid #9eb2a0;
  background: transparent;
}

.btn-outline-ink:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
}

.btn-outline-light {
  color: #f5fbf7;
  border: 1px solid rgba(245, 251, 247, 0.5);
  background: transparent;
}

.btn-outline-light:hover {
  color: #fff;
  background: rgba(245, 251, 247, 0.12);
}

.badge-row {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.confidence-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15, 122, 72, 0.1);
  border: 1px solid rgba(15, 122, 72, 0.25);
  color: #0d5f3b;
  font-size: 0.88rem;
  font-weight: 600;
}

.hero-panel h2 {
  font-size: 1.25rem;
  margin-bottom: 14px;
}

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

.feature-grid,
.project-grid,
.ecosystem-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.feature-card,
.project-card,
.eco-item,
.route-card,
.trust-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  border-radius: 20px;
  padding: 20px;
}

.feature-card {
  grid-column: span 4;
}

.feature-card h3,
.project-card h3,
.eco-item h3,
.trust-card h3 {
  font-size: 1.12rem;
  margin-bottom: 8px;
}

.feature-card p,
.project-card p,
.eco-item p,
.route-card p,
.trust-card li {
  color: var(--muted);
}

.example {
  font-size: 0.9rem;
  border-top: 1px dashed var(--line);
  margin-top: 10px;
  padding-top: 10px;
}

.roadmap-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 14px;
}

.timeline {
  margin: 0;
  padding: 8px 0 8px 8px;
  list-style: none;
  border-left: 2px solid #bfd1c0;
}

.timeline li {
  position: relative;
  padding: 0 0 18px 22px;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -11px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--brand), var(--accent));
}

.timeline h3 {
  font-size: 1.05rem;
  margin: 6px 0;
}

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

.stage {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(15, 122, 72, 0.12);
  color: #0d5f3b;
}

.route-card ul,
.trust-card ul {
  padding-left: 18px;
  margin-bottom: 16px;
}

.project-card {
  grid-column: span 3;
}

.tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #6b560a;
  border: 1px solid rgba(214, 159, 63, 0.5);
  background: rgba(214, 159, 63, 0.15);
  border-radius: 999px;
  padding: 4px 10px;
}

.eco-item {
  grid-column: span 4;
}

.trust-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-list details {
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  padding: 13px 14px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
}

.faq-list p {
  margin: 9px 0 2px;
  color: var(--muted);
}

.final-cta {
  border-radius: 26px;
  background: linear-gradient(138deg, #0f522f, #0f7a48 58%, #136e93 100%);
  color: #f5fbf7;
  box-shadow: 0 26px 42px rgba(18, 44, 31, 0.32);
  padding: clamp(22px, 3vw, 36px);
}

.final-cta h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.35rem);
}

.final-cta p {
  color: rgba(245, 251, 247, 0.9);
  margin-bottom: 16px;
}

.reference-links {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.reference-links a {
  color: #f6f9f4;
  border: 1px solid rgba(246, 249, 244, 0.28);
  padding: 7px 12px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.87rem;
}

.reference-links a:hover {
  background: rgba(246, 249, 244, 0.14);
}

.footer {
  margin-top: 64px;
  padding: 16px 0;
  background: rgba(255, 255, 255, 0.7);
  border-top: 1px solid #d8e0d5;
}

.footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
}

.footer img,
.footer p {
  float: none !important;
  display: inline-block;
  vertical-align: middle;
}

.footer p {
  margin: 0 0 0 5px !important;
}

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

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 991px) {
  .nav-shell {
    border-radius: 20px;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 12px;
    width: 100%;
    text-align: center;
  }

  .hero,
  .roadmap-layout,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .project-card,
  .eco-item {
    grid-column: span 6;
  }
}

@media (max-width: 700px) {
  .section {
    padding-top: 54px;
  }

  .hero {
    padding-top: 28px;
  }

  .feature-grid,
  .project-grid,
  .ecosystem-grid {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .project-card,
  .eco-item {
    grid-column: span 1;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}