:root {
  --brand: #597EF7;
  --title: #1D2B5F;
  --text: #3F4A66;
  --muted: #5B647A;
  --bg: #F6F8FF;
  --bg2: #ECF0FF;
  --bg3: #EAF7FF;
  --card: rgba(255, 255, 255, 0.86);
  --line: rgba(89, 126, 247, 0.16);
  --shadow: 0 18px 48px rgba(89, 126, 247, 0.12);
  --dark: #1F1F1F;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 10% 0%, #EAF7FF 0%, transparent 28%), linear-gradient(180deg, #F6F8FF 0%, #ECF0FF 58%, #EAF7FF 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
p { line-height: 1.85; margin: 0; }
ul { margin: 0; padding-left: 20px; }
li { line-height: 1.9; }

.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 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand, .drawer-brand, .footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand img, .drawer-brand img, .footer-brand img { width: 42px; height: 42px; object-fit: contain; }
.brand strong, .drawer-brand span { color: var(--title); font-size: 20px; letter-spacing: .04em; white-space: nowrap; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: 4px; flex: 1; }
.desktop-nav a {
  padding: 9px 10px;
  border-radius: 999px;
  color: #3F4A66;
  font-size: 14px;
  transition: .2s ease;
  white-space: nowrap;
}
.desktop-nav a:hover, .desktop-nav a.active, .drawer-nav 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;
  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;
  border: 0;
  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 { display: none; border: 0; background: rgba(89, 126, 247, .10); width: 42px; height: 42px; border-radius: 14px; padding: 10px; }
.menu-toggle span { display: block; height: 2px; background: var(--brand); margin: 5px 0; border-radius: 2px; }
.drawer-mask { position: fixed; inset: 0; z-index: 10000; background: rgba(10, 18, 44, .46); opacity: 0; pointer-events: none; transition: .25s ease; }
.drawer-mask.open { opacity: 1; pointer-events: auto; }
.mobile-drawer {
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 10001;
  width: min(82vw, 330px); padding: 22px; transform: translateX(-100%);
  background: linear-gradient(180deg, #FFFFFF 0%, #ECF0FF 100%);
  box-shadow: 22px 0 42px rgba(29, 43, 95, .18);
  transition: .28s ease;
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.drawer-close { width: 38px; height: 38px; border: 0; border-radius: 50%; background: rgba(89,126,247,.10); color: var(--brand); font-size: 26px; line-height: 1; }
.drawer-nav { display: grid; gap: 8px; }
.drawer-nav a { padding: 13px 14px; border-radius: 14px; background: rgba(255,255,255,.72); color: var(--title); border: 1px solid rgba(89,126,247,.10); }
.drawer-btn { width: 100%; margin-top: 20px; }
.menu-open { overflow: hidden; }

.site-main { min-height: 65vh; }
.section, .page-section { max-width: 1200px; margin: 0 auto; padding: 48px 24px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.eyebrow { color: var(--brand); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
h1, h2, h3 { color: var(--title); margin: 0; line-height: 1.25; }
h1 { font-size: clamp(32px, 5vw, 54px); }
h2 { font-size: clamp(25px, 3vw, 36px); }
h3 { font-size: 20px; }
.lead { color: var(--muted); font-size: 17px; max-width: 820px; }
.text-link { color: var(--brand); font-weight: 800; display: inline-flex; align-items: center; margin-top: 16px; }
.text-link::after { content: '→'; margin-left: 8px; }

.banner-slider {
  max-width: 1200px;
  margin: 28px auto 36px;
  border-radius: 20px;
  background: #101827;
  box-shadow: 0 22px 48px rgba(16, 24, 39, 0.20);
  overflow: hidden;
  position: relative;
  min-height: 380px;
}
.banner-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .45s ease; display: flex; align-items: center; justify-content: center; }
.banner-slide.active { opacity: 1; z-index: 1; }
.banner-slide img { width: 100%; height: 100%; object-fit: contain; background: #101827; }
.banner-copy { position: absolute; z-index: 2; left: 42px; bottom: 36px; max-width: 520px; color: #fff; padding: 22px; border-radius: 22px; background: rgba(10,18,44,.46); backdrop-filter: blur(10px); }
.banner-copy h1 { color: #fff; font-size: clamp(28px, 4vw, 48px); margin-bottom: 12px; }
.banner-copy p { color: rgba(255,255,255,.86); margin-bottom: 18px; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.36); background: rgba(255,255,255,.22); color: #fff; font-size: 28px; cursor: pointer; backdrop-filter: blur(8px); }
.slider-arrow:hover { background: rgba(89,126,247,.7); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 0; right: 0; bottom: 16px; z-index: 6; display: flex; justify-content: center; gap: 8px; }
.slider-dot { width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,.58); cursor: pointer; }
.slider-dot.active { width: 28px; border-radius: 999px; background: linear-gradient(135deg, #7580EE, #7AC4F5); }

.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.quick-card, .info-card, .matrix-card, .faq-item, .help-card, .stat-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}
.quick-card { padding: 20px; min-height: 148px; transition: .22s ease; }
.quick-card:hover, .matrix-card:hover, .help-card:hover { transform: translateY(-3px); box-shadow: 0 24px 58px rgba(89,126,247,.16); }
.num { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 14px; background: rgba(89,126,247,.10); color: var(--brand); font-weight: 900; margin-bottom: 12px; }
.quick-card p, .info-card p, .matrix-card p, .help-card p { color: var(--muted); margin-top: 8px; }
.intro-strip { border-radius: 26px; padding: 28px 34px; background: linear-gradient(135deg, rgba(89,126,247,.12), rgba(122,196,245,.18)); border: 1px solid var(--line); box-shadow: var(--shadow); }
.info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card { padding: 24px; }
.info-card ul { margin-top: 12px; color: var(--muted); }
.zigzag { display: grid; gap: 30px; }
.feature-row { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 34px; padding: 28px; border-radius: 28px; background: rgba(255,255,255,.72); border: 1px solid var(--line); box-shadow: var(--shadow); }
.feature-row:nth-child(even) .feature-media { order: 2; }
.feature-media { border-radius: 24px; overflow: hidden; background: #fff; border: 1px solid var(--line); }
.feature-media img { width: 100%; height: 300px; object-fit: contain; }
.feature-content ul { margin-top: 14px; color: var(--muted); }
.matrix-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.matrix-card { overflow: hidden; }
.matrix-card img { width: 100%; height: 185px; object-fit: contain; background: #F6F8FF; border-bottom: 1px solid var(--line); }
.matrix-body { padding: 22px; }
.tag { display: inline-flex; padding: 6px 12px; border-radius: 999px; background: rgba(89,126,247,.10); color: var(--brand); font-size: 13px; font-weight: 800; margin-bottom: 12px; }
.app-panel, .support-panel, .inner-hero, .cta-panel {
  border-radius: 30px;
  background: rgba(255,255,255,.78);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.app-panel, .support-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 0; }
.app-panel img, .support-panel img { width: 100%; height: 100%; min-height: 360px; object-fit: contain; background: #F6F8FF; }
.app-content, .support-content { padding: 40px; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 20px; }
.check { padding: 14px 16px; border-radius: 16px; background: rgba(89,126,247,.08); color: var(--title); font-weight: 700; }
.help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.help-card { padding: 22px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 22px 24px; }
.faq-item h3 { margin-bottom: 8px; }
.notice-box { padding: 28px; border-radius: 26px; background: linear-gradient(135deg, rgba(29,43,95,.94), rgba(89,126,247,.88)); color: #fff; box-shadow: 0 24px 54px rgba(29,43,95,.24); }
.notice-box h2, .notice-box h3 { color: #fff; }
.notice-box p, .notice-box li { color: rgba(255,255,255,.86); }

.inner-hero { max-width: 1200px; margin: 34px auto 10px; padding: 46px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 30px; align-items: center; }
.inner-hero.no-image { display: block; }
.inner-hero img { width: 100%; max-height: 360px; object-fit: contain; border-radius: 24px; background: #F6F8FF; border: 1px solid var(--line); }
.breadcrumb { display: flex; gap: 8px; align-items: center; color: var(--brand); font-weight: 800; margin-bottom: 14px; }
.content-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 22px; align-items: start; }
.article-card { padding: 30px; background: rgba(255,255,255,.86); border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); }
.article-card h2 { margin: 26px 0 12px; }
.article-card h2:first-child { margin-top: 0; }
.article-card p + p { margin-top: 12px; }
.side-card { position: sticky; top: 96px; padding: 24px; background: rgba(255,255,255,.86); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); }
.side-card a { display: block; padding: 12px 0; border-bottom: 1px solid rgba(89,126,247,.12); color: var(--title); font-weight: 700; }
.side-card a:last-child { border-bottom: 0; }
.list-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 22px; }
.stat-card { padding: 22px; }
.cta-panel { padding: 34px; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: linear-gradient(135deg, rgba(255,255,255,.90), rgba(234,247,255,.88)); }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 20px; }
.contact-box { padding: 22px; border-radius: 20px; background: rgba(89,126,247,.08); border: 1px solid rgba(89,126,247,.12); }

.site-footer { margin-top: 40px; background: linear-gradient(135deg, #1F1F1F 0%, #2B2B2B 100%); color: #E8ECF5; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 46px 24px 28px; }
.footer-brand { align-items: flex-start; max-width: 680px; }
.footer-brand strong { display: block; color: #fff; font-size: 22px; margin-bottom: 8px; }
.footer-brand p { color: rgba(232,236,245,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 32px 0; }
.footer-links h3 { color: #fff; margin-bottom: 12px; font-size: 17px; }
.footer-links a { display: block; color: rgba(232,236,245,.78); padding: 6px 0; }
.footer-links a:hover { color: #7AC4F5; }
.footer-note { border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; color: rgba(232,236,245,.76); display: grid; gap: 8px; }

@media (max-width: 1100px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .brand { margin: 0 auto; }
  .quick-grid, .info-grid { grid-template-columns: repeat(2, 1fr); }
  .matrix-grid, .help-grid, .list-cards { grid-template-columns: repeat(2, 1fr); }
  .inner-hero, .content-grid { grid-template-columns: 1fr; }
  .side-card { position: static; }
}
@media (max-width: 760px) {
  .header-inner { padding: 0 14px; min-height: 66px; gap: 10px; }
  .brand strong { display: none; }
  .brand img { width: 38px; height: 38px; }
  .header-cta { padding: 10px 16px; font-size: 14px; }
  .section, .page-section { padding: 36px 16px; }
  .section-head { display: block; }
  .lead { font-size: 16px; margin-top: 10px; }
  .banner-slider { margin: 18px 16px 18px; min-height: 210px; border-radius: 16px; }
  .banner-copy { left: 14px; right: 14px; bottom: 28px; padding: 14px; }
  .banner-copy h1 { font-size: 24px; }
  .banner-copy p { display: none; }
  .slider-arrow { width: 36px; height: 36px; font-size: 22px; }
  .slider-prev { left: 10px; } .slider-next { right: 10px; }
  .quick-grid { display: flex; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x mandatory; }
  .quick-card { min-width: 220px; scroll-snap-align: start; }
  .info-grid, .matrix-grid, .help-grid, .list-cards, .contact-grid { grid-template-columns: 1fr; }
  .feature-row, .app-panel, .support-panel, .inner-hero { grid-template-columns: 1fr; padding: 20px; }
  .feature-row:nth-child(even) .feature-media { order: 0; }
  .feature-media img, .app-panel img, .support-panel img { height: 220px; min-height: 220px; }
  .app-content, .support-content { padding: 22px 2px 4px; }
  .check-grid { grid-template-columns: 1fr; }
  .article-card { padding: 22px; }
  .cta-panel { display: block; }
  .cta-panel .main-btn { margin-top: 20px; }
  .footer-links { grid-template-columns: 1fr; }
}