:root {
  --brand: #597EF7;
  --brand-dark: #1D2B5F;
  --text: #222222;
  --muted: #5B647A;
  --soft: #F6F8FF;
  --soft2: #ECF0FF;
  --soft3: #EAF7FF;
  --card: rgba(255,255,255,0.86);
  --line: rgba(89, 126, 247, 0.16);
  --shadow: 0 18px 42px rgba(89, 126, 247, 0.12);
  --radius: 22px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  background: linear-gradient(135deg, #F6F8FF 0%, #ECF0FF 48%, #EAF7FF 100%);
}
body { line-height: 1.72; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 9999;
  background: linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 52%, #EAF7FF 100%);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 24px rgba(89, 126, 247, 0.10);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  min-height: 72px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand img, .drawer-logo img, .footer-brand img { width: 142px; height: auto; object-fit: contain; }
.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 6px;
  white-space: nowrap;
}
.nav-links a {
  color: #3F4A66;
  font-size: 14px;
  font-weight: 700;
  padding: 9px 11px;
  border-radius: 999px;
  transition: .24s ease;
}
.nav-links a:hover, .nav-links a.active { color: #597EF7; background: rgba(89,126,247,.10); }
.main-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, #7580EE 0%, #597EF7 48%, #7AC4F5 100%);
  color: #FFFFFF;
  font-weight: 700;
  text-decoration: none;
  border: none;
  box-shadow: 0 0 10px rgba(89, 126, 247, 0.28), 0 0 22px rgba(122, 196, 245, 0.20), 0 10px 24px rgba(89, 126, 247, 0.20);
  transition: all 0.25s ease;
  white-space: nowrap;
}
.main-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 14px rgba(89, 126, 247, 0.36), 0 0 28px rgba(122, 196, 245, 0.26), 0 14px 28px rgba(89, 126, 247, 0.24);
}
.menu-toggle, .drawer-close { display: none; }

.page-wrap, .home-section, .banner-slider { max-width: 1200px; margin-left: auto; margin-right: auto; }
.banner-slider {
  margin-top: 28px;
  margin-bottom: 36px;
  border-radius: 20px;
  background: #101827;
  box-shadow: 0 22px 48px rgba(16, 24, 39, 0.20);
  overflow: hidden;
  position: relative;
  min-height: 390px;
}
.banner-slides { position: relative; height: 390px; }
.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity .55s ease;
  display: grid;
  place-items: center;
  background: #111827;
}
.banner-slide.active { opacity: 1; z-index: 1; }
.banner-slide img { width: 100%; height: 100%; object-fit: contain; }
.banner-copy {
  position: absolute;
  left: 42px;
  bottom: 38px;
  z-index: 2;
  max-width: 520px;
  padding: 22px;
  border-radius: 18px;
  background: rgba(10, 18, 35, 0.58);
  border: 1px solid rgba(255,255,255,.16);
  backdrop-filter: blur(10px);
  color: #fff;
}
.banner-copy h1 { margin: 0 0 10px; font-size: 32px; line-height: 1.25; }
.banner-copy p { margin: 0 0 18px; color: #E8ECF5; }
.banner-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255,255,255,.30);
  border-radius: 50%;
  background: rgba(255,255,255,.78);
  color: #1D2B5F;
  font-size: 28px;
  cursor: pointer;
  transition: .22s ease;
}
.banner-control:hover { background: #fff; transform: translateY(-50%) scale(1.04); }
.banner-prev { left: 18px; }
.banner-next { right: 18px; }
.banner-dots { position: absolute; left: 0; right: 0; bottom: 14px; z-index: 3; display: flex; justify-content: center; gap: 9px; }
.banner-dot { width: 10px; height: 10px; border: 0; border-radius: 999px; background: rgba(255,255,255,.62); cursor: pointer; }
.banner-dot.active { width: 28px; background: linear-gradient(135deg, #7580EE 0%, #597EF7 48%, #7AC4F5 100%); }

.home-section { padding: 32px 20px; }
.section-head { max-width: 820px; margin: 0 auto 26px; text-align: center; }
.eyebrow { display: inline-flex; color: #597EF7; background: rgba(89,126,247,.10); border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px; font-size: 13px; font-weight: 800; margin-bottom: 10px; }
.section-head h2, .page-hero h1, .content-block h2, .feature-text h2 { color: #1D2B5F; margin: 0 0 12px; line-height: 1.28; }
.section-head h2 { font-size: 30px; }
.section-head p, .page-hero p, .content-block p, .feature-text p { color: #5B647A; margin: 0; }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.quick-card, .info-card, .matrix-card, .text-card, .faq-item, .help-card, .contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.quick-card { padding: 18px; transition: .24s ease; }
.quick-card:hover { transform: translateY(-3px); border-color: rgba(89,126,247,.34); }
.quick-num { color: #597EF7; font-size: 14px; font-weight: 900; letter-spacing: .08em; }
.quick-card h3 { margin: 8px 0 6px; color: #1D2B5F; font-size: 18px; }
.quick-card p { margin: 0; color: #5B647A; font-size: 14px; }
.intro-strip { max-width: 1200px; margin: 16px auto 8px; padding: 24px 28px; border-radius: 24px; background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(234,247,255,.86)); border: 1px solid var(--line); box-shadow: var(--shadow); color: #3F4A66; }
.info-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.info-card { padding: 22px; }
.info-card .num { color: #597EF7; font-weight: 900; letter-spacing: .1em; }
.info-card h3 { color: #1D2B5F; margin: 8px 0; }
.info-card p, .info-card li { color: #5B647A; }
.info-card ul { padding-left: 18px; margin: 12px 0 0; }
.feature-list { display: grid; gap: 22px; }
.feature-row { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 26px; padding: 20px; border-radius: 28px; background: rgba(255,255,255,.76); border: 1px solid var(--line); box-shadow: var(--shadow); }
.feature-row.reverse .feature-image { order: 2; }
.feature-image { min-height: 260px; border-radius: 22px; overflow: hidden; background: #fff; display: grid; place-items: center; }
.feature-image img { width: 100%; height: 100%; max-height: 310px; object-fit: contain; }
.feature-text { padding: 10px 12px; }
.feature-text ul { color: #3F4A66; padding-left: 18px; }
.text-link { display: inline-flex; margin-top: 10px; color: #597EF7; font-weight: 800; }
.matrix-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.matrix-card { overflow: hidden; }
.matrix-card .pic { height: 170px; background: #fff; display: grid; place-items: center; border-bottom: 1px solid var(--line); }
.matrix-card .pic img { width: 100%; height: 100%; object-fit: contain; }
.matrix-body { padding: 18px; }
.tag { display: inline-flex; padding: 4px 10px; border-radius: 999px; background: rgba(89,126,247,.10); color: #597EF7; font-size: 12px; font-weight: 900; }
.matrix-body h3 { margin: 10px 0 8px; color: #1D2B5F; }
.matrix-body p { margin: 0; color: #5B647A; }
.app-showcase, .support-panel { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 26px; padding: 26px; background: rgba(255,255,255,.80); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.app-showcase .media, .support-panel .media { border-radius: 24px; background: #fff; min-height: 280px; display: grid; place-items: center; overflow: hidden; }
.app-showcase img, .support-panel img { width: 100%; height: 100%; object-fit: contain; }
.point-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-top: 18px; }
.point-grid span, .safe-list span { padding: 12px 14px; border-radius: 16px; background: rgba(89,126,247,.08); color: #3F4A66; font-weight: 700; }
.safe-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-top: 18px; }
.faq-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.faq-item { padding: 20px; }
.faq-item h3 { color: #1D2B5F; margin: 0 0 8px; }
.faq-item p { margin: 0; color: #5B647A; }
.notice-box { padding: 26px; border-radius: 26px; background: linear-gradient(135deg, rgba(89,126,247,.10), rgba(122,196,245,.12)); border: 1px solid var(--line); color: #3F4A66; }
.notice-box h2 { color: #1D2B5F; margin-top: 0; }
.notice-box ul { margin-bottom: 0; }

.page-wrap { padding: 36px 20px 62px; }
.page-hero { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 28px; min-height: 330px; padding: 34px; border-radius: 30px; background: rgba(255,255,255,.78); border: 1px solid var(--line); box-shadow: var(--shadow); }
.page-hero.no-image { display: block; min-height: auto; }
.page-hero h1 { font-size: 38px; }
.page-hero .hero-media { min-height: 270px; border-radius: 24px; overflow: hidden; background: #fff; display: grid; place-items: center; }
.page-hero .hero-media img { width: 100%; height: 100%; object-fit: contain; }
.page-actions { margin-top: 22px; display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.ghost-link { color: #597EF7; font-weight: 800; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 24px; }
.content-grid.three { grid-template-columns: repeat(3,minmax(0,1fr)); }
.content-block { margin-top: 24px; padding: 26px; border-radius: 26px; background: rgba(255,255,255,.78); border: 1px solid var(--line); box-shadow: var(--shadow); }
.content-block h2 { font-size: 26px; }
.text-card { padding: 22px; }
.text-card h3 { margin: 0 0 8px; color: #1D2B5F; }
.text-card p, .text-card li, .content-block li { color: #5B647A; }
.text-card ul, .content-block ul { padding-left: 18px; }
.timeline { display: grid; gap: 14px; }
.timeline .step { padding: 18px; border-left: 4px solid #597EF7; border-radius: 16px; background: rgba(89,126,247,.07); }
.columns { columns: 2; column-gap: 28px; }
.columns p { break-inside: avoid; margin-top: 0; }
.help-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.help-card { padding: 20px; }
.contact-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.contact-card { padding: 22px; }

.site-footer { background: linear-gradient(135deg, #1F1F1F 0%, #2B2B2B 100%); color: #E8ECF5; margin-top: 38px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 42px 20px; display: grid; grid-template-columns: 1.1fr 1.5fr; gap: 40px; }
.footer-brand p { color: rgba(232,236,245,.82); margin-bottom: 10px; }
.footer-note { color: rgba(232,236,245,.70) !important; font-size: 14px; }
.footer-links { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.footer-links h3 { color: #fff; margin-top: 0; }
.footer-links a { display: block; color: rgba(232,236,245,.76); margin: 9px 0; }
.footer-links a:hover { color: #7AC4F5; }
.footer-bottom { border-top: 1px solid rgba(232,236,245,.12); max-width: 1200px; margin: 0 auto; padding: 16px 20px 24px; display: flex; justify-content: space-between; gap: 12px; color: rgba(232,236,245,.70); font-size: 14px; }
.mobile-mask, .mobile-drawer { display: none; }

@media (max-width: 1120px) {
  .nav-links { gap: 2px; }
  .nav-links a { font-size: 13px; padding: 8px 7px; }
  .header-cta { padding: 10px 18px; }
}
@media (max-width: 900px) {
  .menu-toggle { display: inline-flex; width: 42px; height: 42px; border: 0; border-radius: 14px; background: rgba(89,126,247,.10); align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
  .menu-toggle span { width: 20px; height: 2px; border-radius: 99px; background: #1D2B5F; }
  .nav-links { display: none; }
  .header-inner { min-height: 66px; padding: 0 14px; display: grid; grid-template-columns: 48px 1fr auto; }
  .brand { justify-self: center; }
  .brand img { width: 124px; }
  .header-cta { padding: 9px 14px; font-size: 13px; }
  .mobile-mask { display: block; position: fixed; inset: 0; background: rgba(15,23,42,.46); z-index: 9998; opacity: 0; pointer-events: none; transition: .25s ease; }
  .mobile-mask.show { opacity: 1; pointer-events: auto; }
  .mobile-drawer { display: block; position: fixed; top: 0; left: 0; width: min(82vw, 330px); height: 100vh; background: linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 52%, #EAF7FF 100%); z-index: 9999; transform: translateX(-105%); transition: .28s ease; box-shadow: 18px 0 42px rgba(16,24,39,.20); padding: 18px; overflow-y: auto; }
  .mobile-drawer.open { transform: translateX(0); }
  .drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 18px; }
  .drawer-logo img { width: 132px; }
  .drawer-close { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border: 0; border-radius: 50%; background: rgba(89,126,247,.12); color: #1D2B5F; font-size: 24px; }
  .drawer-nav { display: grid; gap: 8px; }
  .drawer-nav a { padding: 12px 14px; border-radius: 16px; color: #3F4A66; font-weight: 800; background: rgba(255,255,255,.62); }
  .drawer-nav a.active { color: #597EF7; background: #fff; box-shadow: 0 8px 22px rgba(89,126,247,.10); }
  .drawer-btn { width: 100%; margin-top: 18px; }
  .banner-slider { margin: 18px 14px 24px; min-height: 240px; }
  .banner-slides { height: 240px; }
  .banner-copy { left: 16px; right: 16px; bottom: 28px; max-width: none; padding: 16px; }
  .banner-copy h1 { font-size: 22px; }
  .banner-copy p { font-size: 14px; margin-bottom: 12px; }
  .banner-copy .main-btn { padding: 9px 16px; font-size: 13px; }
  .banner-control { width: 36px; height: 36px; font-size: 22px; }
  .quick-grid, .info-grid, .matrix-grid, .content-grid, .content-grid.three, .help-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .feature-row, .app-showcase, .support-panel, .page-hero, .footer-inner { grid-template-columns: 1fr; }
  .feature-row.reverse .feature-image { order: initial; }
  .footer-links { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .page-hero h1 { font-size: 30px; }
  .columns { columns: 1; }
}
@media (max-width: 560px) {
  .quick-grid, .info-grid, .matrix-grid, .faq-grid, .point-grid, .safe-list, .content-grid, .content-grid.three, .help-grid, .contact-grid, .footer-links { grid-template-columns: 1fr; }
  .home-section { padding: 24px 14px; }
  .section-head h2 { font-size: 24px; }
  .page-wrap { padding: 24px 14px 46px; }
  .page-hero { padding: 22px; }
  .page-hero h1 { font-size: 26px; }
  .footer-bottom { flex-direction: column; }
  .feature-image, .app-showcase .media, .support-panel .media, .page-hero .hero-media { min-height: 210px; }
}