:root {
  --bg: #f5f0ff;
  --bg-soft: #ede5ff;
  --primary: #7c4dff;
  --primary-dark: #6236e0;
  --accent: #ffd700;
  --text: #111827;
  --text-muted: #6b7280;
  --card: #ffffff;
  --border: rgba(124, 77, 255, 0.14);
  --shadow: 0 18px 50px rgba(124, 77, 255, 0.14);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg) 0%, #fafbff 45%, #ffffff 100%);
  line-height: 1.6;
}

a {
  color: var(--primary);
  text-decoration: none;
}

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

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(245, 240, 255, 0.88);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--text);
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 8px 20px rgba(124, 77, 255, 0.28);
  flex-shrink: 0;
}

.brand-text small {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

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

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

.hero {
  padding: 72px 0 48px;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(124, 77, 255, 0.1);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
}

.hero h1 {
  margin: 18px 0 16px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 0 28px;
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #9b6dff 100%);
  color: #fff;
  box-shadow: 0 12px 28px rgba(124, 77, 255, 0.32);
}

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

.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.hero-card p {
  margin: 0 0 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.stat {
  padding: 14px;
  border-radius: 16px;
  background: var(--bg);
}

.stat strong {
  display: block;
  font-size: 22px;
  color: var(--primary);
}

.stat span {
  font-size: 12px;
  color: var(--text-muted);
}

.section {
  padding: 56px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 36px;
}

.section-title h2 {
  margin: 0 0 10px;
  font-size: clamp(26px, 4vw, 36px);
}

.section-title p {
  margin: 0;
  color: var(--text-muted);
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 8px 24px rgba(17, 24, 39, 0.04);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--bg-soft);
  font-size: 22px;
  margin-bottom: 14px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

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

.download-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px 20px 28px;
  text-align: center;
  box-shadow: var(--shadow);
}

.download-card h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.download-card .platform {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-size: 13px;
}

.qr-wrap {
  width: 196px;
  height: 196px;
  margin: 0 auto 16px;
  padding: 10px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--border);
}

.qr-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-live {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
}

.badge-soon {
  background: rgba(107, 114, 128, 0.12);
  color: #4b5563;
}

.download-tip {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.step {
  background: rgba(255, 255, 255, 0.8);
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 22px;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 12px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

.site-footer {
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}

.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.footer-beian {
  flex-basis: 100%;
  text-align: center;
  margin-top: 4px;
}

.footer-beian a {
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .hero-grid,
  .features,
  .download-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 48px;
  }

  .nav-links {
    display: none;
  }
}