:root {
  --primary: #2477ff;
  --primary-dark: #155ee6;
  --bg: #f5f8ff;
  --text: #172033;
  --muted: #6a7280;
  --card: rgba(255,255,255,0.86);
  --border: rgba(36,119,255,0.14);
  --shadow: 0 24px 80px rgba(16, 58, 132, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, #dbe9ff 0, transparent 38%),
              radial-gradient(circle at 90% 12%, #e2f1ff 0, transparent 34%),
              var(--bg);
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(20px);
  background: rgba(245, 248, 255, 0.78);
  border-bottom: 1px solid rgba(36,119,255,0.08);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: white;
  background: linear-gradient(135deg, var(--primary), #68b7ff);
  box-shadow: 0 10px 24px rgba(36,119,255,0.25);
}

.nav-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
  align-items: center;
}

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

.menu-btn {
  display: none;
  border: 0;
  background: white;
  border-radius: 12px;
  width: 42px;
  height: 42px;
  color: var(--primary);
  font-size: 22px;
  box-shadow: 0 10px 24px rgba(16, 58, 132, 0.08);
}

.nav-btn, .primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  background: linear-gradient(135deg, var(--primary), #5ab0ff);
  color: #fff;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 14px 30px rgba(36,119,255,0.25);
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  background: white;
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-weight: 700;
}

.hero {
  padding: 88px 0 62px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 54px;
  align-items: center;
}

.badge, .eyebrow, .section-title span {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(36,119,255,0.09);
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
}

.hero h1 {
  margin: 22px 0 18px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -2px;
}

.hero p, .section-desc, .split p, .download p, .contact p, .legal-card p, .app-card p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.stats div {
  padding: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.65);
  border-radius: 20px;
}

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

.stats span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.phone-card {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-showcase {
  position: relative;
  width: min(100%, 430px);
}

.phone {
  width: 355px;
  min-height: 700px;
  padding: 14px;
  border-radius: 46px;
  background: #122033;
  box-shadow: var(--shadow);
  position: relative;
  margin: 0 auto;
}

.phone-top {
  width: 92px;
  height: 24px;
  border-radius: 0 0 16px 16px;
  background: #122033;
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.app-screen {
  min-height: 620px;
  border-radius: 36px;
  background: linear-gradient(180deg, #f6f9ff, #eaf2ff);
  padding: 42px 18px 18px;
  overflow: hidden;
}

.real-screen {
  min-height: 672px;
  padding: 0;
  background: linear-gradient(180deg, #f7f9fe, #eef3ff);
  position: relative;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
}

.phone-shot {
  display: block;
  width: 100%;
  height: 672px;
  object-fit: cover;
  object-position: var(--hero-shot-position, center top);
  transition: opacity .24s ease, transform .24s ease;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

.phone-shot.is-switching {
  opacity: .72;
  transform: scale(.985);
}

.real-screen.is-dragging {
  cursor: grabbing;
}

.real-screen::after {
  content: "左右滑动查看";
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(18, 32, 51, 0.26);
  color: rgba(255, 255, 255, 0.94);
  font-size: 11px;
  letter-spacing: .04em;
  pointer-events: none;
  backdrop-filter: blur(10px);
}

.hero-screen-caption {
  margin-top: 18px;
  text-align: center;
}

.hero-screen-kicker {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(36,119,255,0.09);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.hero-screen-caption strong {
  display: block;
  margin-top: 10px;
  font-size: 22px;
  line-height: 1.2;
  color: #243044;
}

.hero-screen-caption p {
  margin: 8px 0 0;
  color: #6f7b8c;
  font-size: 15px;
  line-height: 1.7;
}

.hero-screen-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.hero-screen-dot {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 999px;
  background: rgba(36,119,255,0.22);
  cursor: pointer;
  transition: width .2s ease, background .2s ease;
}

.hero-screen-dot.active {
  width: 28px;
  background: var(--primary);
}

.search-bar {
  background: white;
  color: #8b94a3;
  padding: 13px 14px;
  border-radius: 16px;
  font-size: 13px;
}

.tabs {
  display: flex;
  gap: 10px;
  margin: 16px 0;
}

.tabs span {
  padding: 8px 13px;
  border-radius: 999px;
  background: white;
  color: #7c8797;
  font-size: 13px;
}

.tabs .active { background: var(--primary); color: white; }

.product-card {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 12px;
  padding: 12px;
  background: white;
  border-radius: 22px;
  margin-bottom: 14px;
  box-shadow: 0 14px 32px rgba(28, 82, 156, 0.08);
}

.product-img { height: 92px; border-radius: 18px; }
.bag { background: linear-gradient(135deg, #92c4ff, #f5d5ff); }
.camera { background: linear-gradient(135deg, #cde0ff, #9edcff); }

.product-card h3 { margin: 4px 0 6px; font-size: 16px; }
.product-card p { margin: 0 0 10px; color: var(--muted); font-size: 12px; line-height: 1.4; }

.product-card button {
  border: 0;
  border-radius: 999px;
  padding: 7px 14px;
  background: var(--primary);
  color: white;
  font-weight: 700;
}

.chat-bubble {
  margin-top: 18px;
  padding: 16px;
  border-radius: 20px 20px 6px 20px;
  background: var(--primary);
  color: white;
  font-size: 14px;
  box-shadow: 0 12px 28px rgba(36,119,255,0.25);
}

.section { padding: 76px 0; scroll-margin-top: 88px; }

.intro { text-align: center; }
.intro .container { max-width: 900px; }

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

.section-title h2, .intro h2, .split h2, .download h2, .contact h2 {
  font-size: clamp(30px, 4vw, 46px);
  margin: 14px 0;
  letter-spacing: -1px;
}

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

.feature-card, .app-card, .legal-card, .contact-card, .download-card, .glass-panel {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 28px;
  box-shadow: 0 18px 50px rgba(16,58,132,0.08);
}

.feature-card, .app-card, .legal-card { padding: 28px; }

.icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  font-size: 25px;
  border-radius: 18px;
  background: rgba(36,119,255,0.1);
}

.feature-card h3, .app-card h3 { margin: 18px 0 10px; }
.feature-card p, .app-card p, .check-list, footer p, .legal-card p {
  color: var(--muted);
  line-height: 1.7;
}

.app-logo {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: white;
  font-weight: 800;
  font-size: 24px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), #61b4ff);
}

.split-section, .trade, .app-names, .legal {
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.38), transparent);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px;
  align-items: center;
}

.reverse { grid-template-columns: 0.92fr 1.08fr; }

.check-list {
  padding-left: 0;
  list-style: none;
}

.check-list li {
  margin: 12px 0;
  padding-left: 30px;
  position: relative;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 900;
}

.glass-panel { padding: 30px; }

.message {
  max-width: 78%;
  margin: 14px 0;
  padding: 14px 16px;
  background: white;
  border-radius: 18px 18px 18px 4px;
  color: #334155;
}

.message.right {
  margin-left: auto;
  background: var(--primary);
  color: white;
  border-radius: 18px 18px 4px 18px;
}

.product-list { display: grid; gap: 16px; }

.mini-product {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: 20px;
  background: white;
}

.mini-img {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  flex: 0 0 auto;
}

.one { background: linear-gradient(135deg, #b4d4ff, #ffd4e5); }
.two { background: linear-gradient(135deg, #bde6ff, #d7f7ff); }
.three { background: linear-gradient(135deg, #d5d7ff, #b6e4ff); }

.mini-product p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }

.download { padding: 86px 0; scroll-margin-top: 88px; }

.download-card {
  padding: 42px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: center;
  background: linear-gradient(135deg, rgba(255,255,255,0.92), rgba(224,239,255,0.92));
}

.download-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.store-btn {
  min-width: 170px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 20px;
  color: white;
  background: #121a2a;
}

.store-btn span { font-size: 26px; }
.store-btn small { display: block; opacity: .72; font-size: 11px; }
.store-btn strong { display: block; font-size: 16px; }

.qr-box { text-align: center; }

.qr-img {
  width: 190px;
  height: 190px;
  margin: 0 auto 14px;
  display: block;
  padding: 14px;
  border-radius: 28px;
  background: white;
  border: 1px solid var(--border);
  box-shadow: 0 12px 30px rgba(25, 49, 95, 0.08);
  object-fit: contain;
}

.qr-placeholder {
  width: 190px;
  height: 190px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  color: var(--primary);
  font-weight: 800;
  border-radius: 28px;
  background:
    linear-gradient(90deg, rgba(36,119,255,.12) 12px, transparent 1%) center/24px 24px,
    linear-gradient(rgba(36,119,255,.12) 12px, transparent 1%) center/24px 24px,
    white;
  border: 1px solid var(--border);
}

.legal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.legal-card h3 { margin-top: 0; }

.contact { padding-top: 20px; }

.contact-card {
  text-align: center;
  padding: 46px 24px;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 28px auto;
  max-width: 900px;
}

.contact-info div {
  padding: 18px;
  background: white;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.contact-info strong {
  display: block;
  color: var(--text);
  margin-bottom: 8px;
}

.contact-info span, .contact-info a {
  color: var(--muted);
  font-size: 14px;
}

footer {
  padding: 34px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1.7fr;
  gap: 28px;
  align-items: start;
}

.footer-brand strong {
  font-size: 22px;
  color: var(--text);
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a:hover, .company-info a:hover { color: var(--primary); }

.company-info p {
  margin: 0 0 8px;
  font-size: 13px;
}

@media (max-width: 960px) {
  .menu-btn { display: grid; place-items: center; }
  .nav-btn { display: none; }
  .nav { flex-wrap: wrap; padding: 12px 0; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px;
    border-radius: 20px;
    background: white;
    box-shadow: 0 18px 50px rgba(16,58,132,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    width: 100%;
    padding: 12px;
    border-radius: 12px;
  }
  .nav-links a:hover { background: rgba(36,119,255,0.08); }

  .hero { padding-top: 52px; }
  .hero-grid, .split, .reverse, .download-card, .footer-inner {
    grid-template-columns: 1fr;
  }
  .hero-copy, .download-card { text-align: center; }
  .hero-actions, .download-buttons { justify-content: center; }
  .stats, .contact-info { grid-template-columns: 1fr; }
  .feature-grid, .app-grid, .legal-grid { grid-template-columns: 1fr; }
  .phone-showcase {
    width: min(100%, 370px);
  }
  .phone { width: min(330px, 100%); min-height: auto; }
  .real-screen, .phone-shot { height: 620px; min-height: 620px; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 28px, 1120px); }
  .hero h1 { font-size: 40px; }
  .hero p, .section-desc, .split p, .download p, .contact p, .legal-card p, .app-card p { font-size: 16px; }
  .section { padding: 56px 0; }
  .feature-card, .app-card, .legal-card, .glass-panel, .download-card { border-radius: 22px; padding: 22px; }
  .phone-showcase { width: 100%; }
  .phone { min-height: auto; border-radius: 36px; }
  .app-screen { min-height: 560px; border-radius: 28px; }
  .real-screen, .phone-shot { height: 560px; min-height: 560px; }
  .hero-screen-caption strong {
    font-size: 20px;
  }
  .hero-screen-caption p {
    font-size: 14px;
  }
}


.product-showcase-card {
  overflow: hidden;
}

.product-showcase-img {
  display: block;
  width: 100%;
  aspect-ratio: 720 / 460;
  object-fit: cover;
  border-radius: 22px;
  margin-bottom: 20px;
  border: 1px solid rgba(36,119,255,0.1);
  background: #f6f9ff;
}

.legal-link-btn {
  margin-top: 12px;
}

.agreement-page {
  padding: 72px 0;
  background: radial-gradient(circle at 20% 0%, #eaf4ff 0, transparent 34%), var(--bg);
}

.agreement-container {
  max-width: 920px;
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 44px;
  box-shadow: 0 18px 50px rgba(16,58,132,0.08);
}

.agreement-container h1 {
  font-size: 38px;
  color: var(--text);
  margin: 14px 0 20px;
}

.agreement-container h2 {
  font-size: 24px;
  margin: 34px 0 14px;
  color: var(--primary-dark);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.agreement-container p {
  color: #344054;
  line-height: 1.9;
  font-size: 16px;
  margin: 10px 0;
}

.agreement-container .meta {
  color: var(--muted);
  font-size: 14px;
}

.back-link {
  display: inline-flex;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 18px;
}

.company-info a {
  color: var(--primary);
}

@media (max-width: 520px) {
  .agreement-container {
    padding: 24px;
    border-radius: 22px;
  }

  .agreement-container h1 {
    font-size: 30px;
  }

  .agreement-container h2 {
    font-size: 21px;
  }
}