:root {
  --bg: #f5f4ff;
  --card: #ffffff;
  --text: #1a1d2e;
  --muted: #5a6075;
  --accent: #766ee9;
  --accent-2: #4f8bff;
  --accent-3: #f5a94a;
  --border: rgba(118, 110, 233, 0.12);
}

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

body {
  font-family: "Inter", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 244, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 20px;
}

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

.brand img:first-child {
  width: 40px;
  height: 40px;
}

.brand img:last-child {
  height: 26px;
}

.nav-links {
  display: flex;
  gap: 30px;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--text);
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  border-radius: 999px;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.primary-btn {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #ffffff;
  box-shadow: 0 12px 30px rgba(118, 110, 233, 0.28);
}

.secondary-btn {
  background: rgba(118, 110, 233, 0.08);
  color: var(--text);
  border: 1px solid var(--border);
}

.ghost-btn {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(118, 110, 233, 0.2);
}

.primary-btn:hover,
.secondary-btn:hover,
.ghost-btn:hover {
  transform: translateY(-1px);
}

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

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(118, 110, 233, 0.12);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.2rem, 2.5vw + 1.6rem, 3.4rem);
  line-height: 1.15;
  margin-bottom: 16px;
}

.subtitle {
  color: var(--muted);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-meta {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  font-size: 0.9rem;
  color: var(--muted);
}

.hero-meta strong {
  display: block;
  font-size: 1.15rem;
  color: var(--text);
}

.hero-card {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(23, 28, 60, 0.12);
}

.hero-illustration {
  width: 100%;
  border-radius: 18px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 16px 30px rgba(118, 110, 233, 0.12);
}

.card-stack {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.stack-item {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(118, 110, 233, 0.04);
}

.stack-item h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.stack-item p {
  color: var(--muted);
  font-size: 0.9rem;
}


.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 2vw + 1.2rem, 2.6rem);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--muted);
}

.grid-four {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card,
.plugin-card {
  background: var(--card);
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 18px 30px rgba(118, 110, 233, 0.1);
}

.feature-card img {
  width: 48px;
  height: 48px;
  margin-bottom: 14px;
}

.feature-card h3,
.plugin-card h3 {
  margin-bottom: 12px;
}

.feature-card p,
.plugin-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.plugin-card a {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent);
  font-weight: 600;
}

.plugin-card img {
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
}

.muted {
  background: rgba(118, 110, 233, 0.06);
}

.platforms-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
}

.platform-list {
  display: grid;
  gap: 14px;
  margin-top: 20px;
  color: var(--muted);
}

.platform-list div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(118, 110, 233, 0.06);
  border: 1px solid var(--border);
}

.platform-list a {
  color: var(--accent);
  font-weight: 600;
}

.qr-card {
  background: linear-gradient(135deg, rgba(118, 110, 233, 0.18), rgba(245, 169, 74, 0.18));
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
}

.qr-card h3 {
  margin-bottom: 8px;
}

.qr-card p {
  color: var(--muted);
  margin-bottom: 20px;
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.qr-grid div {
  background: #ffffff;
  border-radius: 16px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: 0 12px 20px rgba(118, 110, 233, 0.12);
}

.qr-grid span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.85rem;
}

.gradient {
  background: radial-gradient(circle at top, rgba(118, 110, 233, 0.22), transparent 60%);
}

.support-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
}

.support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.support-card {
  background: rgba(118, 110, 233, 0.05);
  border-radius: 20px;
  padding: 24px;
  border: 1px solid var(--border);
}

.social-links {
  display: flex;
  gap: 16px;
  margin: 16px 0 20px;
  flex-wrap: wrap;
}

.social-links a {
  color: var(--accent);
  font-weight: 600;
}

.wechat-trigger {
  position: relative;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
}

.wechat-popover {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: #ffffff;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 12px 24px rgba(118, 110, 233, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  width: 150px;
}

.wechat-popover img {
  width: 100%;
  height: auto;
  display: block;
}

.wechat-trigger:hover .wechat-popover {
  opacity: 1;
  pointer-events: auto;
}

.contact-block {
  padding: 14px;
  border-radius: 14px;
  background: rgba(118, 110, 233, 0.08);
  border: 1px solid var(--border);
  display: grid;
  gap: 6px;
}

.site-footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-bottom: 30px;
  color: var(--muted);
}

.footer-grid h4 {
  color: var(--text);
  margin-bottom: 10px;
}

.footer-grid a {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
}

.footer-grid a:hover {
  color: var(--text);
}

.footer-grid img {
  height: 28px;
  margin-bottom: 12px;
}

.copyright {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 90px 0 60px;
  }

  .hero-card {
    padding: 20px;
  }

  .card-footer {
    flex-direction: column;
  }
}