:root {
  --brand: #597EF7;
  --brand-deep: #1D2B5F;
  --text: #222222;
  --muted: #5B647A;
  --soft: #F6F8FF;
  --soft-2: #ECF0FF;
  --soft-3: #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);
  --shadow-strong: 0 22px 48px rgba(16, 24, 39, 0.20);
}

* { 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", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background:
    radial-gradient(circle at 10% 8%, rgba(122, 196, 245, 0.20), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(89, 126, 247, 0.14), transparent 32%),
    linear-gradient(180deg, #F6F8FF 0%, #ECF0FF 46%, #EAF7FF 100%);
}

a { color: inherit; }

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);
  border-bottom: 1px solid rgba(89, 126, 247, 0.12);
}

.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-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand img { width: 148px; height: auto; }
.drawer-logo img { width: 138px; height: auto; }

.desktop-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.desktop-nav a,
.drawer-nav a {
  text-decoration: none;
  color: #3F4A66;
  font-weight: 700;
  font-size: 14px;
  padding: 10px 11px;
  border-radius: 999px;
  transition: all 0.24s ease;
  white-space: nowrap;
}

.desktop-nav a:hover,
.desktop-nav a.active,
.drawer-nav a:hover,
.drawer-nav a.active {
  color: #FFFFFF;
  background: linear-gradient(135deg, #7580EE 0%, #597EF7 58%, #7AC4F5 100%);
  box-shadow: 0 8px 18px rgba(89, 126, 247, 0.18);
}

.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;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.78);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: #1D2B5F;
}

.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(16, 24, 39, 0.42);
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  z-index: 9998;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: min(310px, 82vw);
  height: 100vh;
  background: linear-gradient(180deg, #FFFFFF 0%, #F6F8FF 100%);
  border-right: 1px solid var(--line);
  box-shadow: 22px 0 48px rgba(16, 24, 39, 0.18);
  transform: translateX(-104%);
  transition: transform 0.28s ease;
  z-index: 9999;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.drawer-open .drawer-mask {
  opacity: 1;
  visibility: visible;
}

.drawer-open .mobile-drawer { transform: translateX(0); }

.drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.drawer-close {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 12px;
  font-size: 24px;
  line-height: 1;
  color: #1D2B5F;
  background: #ECF0FF;
  cursor: pointer;
}

.drawer-nav {
  display: grid;
  gap: 8px;
}

.drawer-nav a {
  display: flex;
  padding: 13px 14px;
  border-radius: 14px;
}

.site-main { min-height: 70vh; }

.section,
.page-hero,
.banner-slider,
.intro-strip,
.quick-nav,
.feature-grid,
.alt-section,
.matrix-grid,
.app-panel,
.support-panel,
.faq-list,
.responsible-box,
.page-content {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.banner-slider {
  margin-top: 28px;
  margin-bottom: 34px;
  border-radius: 20px;
  background: #101827;
  box-shadow: var(--shadow-strong);
  overflow: hidden;
  position: relative;
  height: 390px;
}

.slides,
.slide { height: 100%; }

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.01);
  transition: opacity 0.5s ease, transform 0.5s ease;
  background:
    radial-gradient(circle at 50% 50%, rgba(89, 126, 247, 0.18), transparent 48%),
    #101827;
}

.slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.82);
  color: #1D2B5F;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(16, 24, 39, 0.18);
  transition: all 0.25s ease;
}

.slider-btn:hover { background: #FFFFFF; transform: translateY(-50%) scale(1.04); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }

.slider-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  z-index: 3;
  display: flex;
  justify-content: center;
  gap: 9px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  cursor: pointer;
  transition: all 0.25s ease;
}

.slider-dot.active {
  width: 34px;
  background: linear-gradient(135deg, #7580EE 0%, #597EF7 50%, #7AC4F5 100%);
}

.section { margin-top: 64px; padding: 0 24px; }

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-title h2,
.page-hero h1,
.card h2,
.card h3,
.alt-text h2,
.app-copy h2,
.support-copy h2,
.content-block h2 {
  color: #1D2B5F;
  margin: 0;
  line-height: 1.25;
}

.section-title h2 { font-size: clamp(26px, 3vw, 38px); }
.section-title p { max-width: 590px; margin: 0; color: var(--muted); line-height: 1.8; }

.quick-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 0 24px;
  margin-bottom: 34px;
}

.quick-card,
.card,
.matrix-card,
.faq-item,
.content-block,
.stat-card,
.contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.quick-card {
  padding: 18px;
  text-decoration: none;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.quick-card:hover { transform: translateY(-3px); box-shadow: 0 22px 44px rgba(89, 126, 247, 0.16); }
.quick-card .num { color: #597EF7; font-weight: 900; letter-spacing: 0.08em; font-size: 13px; }
.quick-card h3 { margin: 8px 0 6px; color: #1D2B5F; font-size: 18px; }
.quick-card p { margin: 0; color: #5B647A; line-height: 1.7; font-size: 14px; }

.intro-strip {
  margin-top: 0;
  padding: 28px 32px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(255,255,255,0.92), rgba(234,247,255,0.90));
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  box-shadow: var(--shadow);
}

.intro-strip p { margin: 0; color: #3F4A66; line-height: 1.9; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding: 0 24px;
}

.card { padding: 24px; }
.card .num { color: #597EF7; font-weight: 900; font-size: 13px; letter-spacing: 0.10em; }
.card h3 { margin-top: 10px; font-size: 21px; }
.card p { color: #5B647A; line-height: 1.85; }
.card ul,
.content-block ul,
.alt-text ul,
.app-copy ul,
.support-copy ul {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  display: grid;
  gap: 9px;
}
.card li,
.content-block li,
.alt-text li,
.app-copy li,
.support-copy li {
  position: relative;
  padding-left: 18px;
  color: #3F4A66;
  line-height: 1.7;
}
.card li::before,
.content-block li::before,
.alt-text li::before,
.app-copy li::before,
.support-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #597EF7;
  box-shadow: 0 0 12px rgba(89, 126, 247, 0.48);
}

.alt-section { display: grid; gap: 28px; padding: 0 24px; }
.alt-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}
.alt-row.reverse .alt-image { order: 2; }
.alt-image { border-radius: 22px; overflow: hidden; background: #ECF0FF; }
.alt-image img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: #ECF0FF; }
.alt-text p { color: #5B647A; line-height: 1.9; }
.text-link {
  display: inline-flex;
  margin-top: 14px;
  color: #597EF7;
  font-weight: 800;
  text-decoration: none;
}
.text-link:hover { text-decoration: underline; }

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  padding: 0 24px;
}
.matrix-card { overflow: hidden; }
.matrix-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #ECF0FF; }
.matrix-body { padding: 20px; }
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(89, 126, 247, 0.10);
  color: #597EF7;
  font-size: 13px;
  font-weight: 800;
}
.matrix-body h3 { color: #1D2B5F; margin: 12px 0 8px; }
.matrix-body p { color: #5B647A; line-height: 1.8; margin: 0; }

.app-panel,
.support-panel {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(255,255,255,0.92), rgba(234,247,255,0.88));
  box-shadow: var(--shadow);
}
.app-image,
.support-image { border-radius: 22px; overflow: hidden; background: #ECF0FF; }
.app-image img,
.support-image img { width: 100%; aspect-ratio: 16 / 11; object-fit: contain; background: #ECF0FF; }
.app-copy p,
.support-copy p { color: #5B647A; line-height: 1.9; }

.support-panel { grid-template-columns: 1.1fr 0.9fr; }

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 0 24px;
}
.faq-item { padding: 22px; }
.faq-item h3 { margin: 0 0 10px; color: #1D2B5F; font-size: 19px; }
.faq-item p { margin: 0; color: #5B647A; line-height: 1.85; }

.responsible-box {
  padding: 30px;
  border-radius: 26px;
  background: linear-gradient(135deg, #1D2B5F 0%, #597EF7 56%, #7AC4F5 100%);
  color: #FFFFFF;
  box-shadow: 0 22px 46px rgba(89, 126, 247, 0.24);
}
.responsible-box h2 { margin: 0 0 14px; color: #FFFFFF; }
.responsible-box p { margin: 0; line-height: 1.9; color: rgba(255,255,255,0.92); }

.page-hero {
  padding: 64px 24px 28px;
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 32px;
  align-items: center;
}
.page-hero.full { grid-template-columns: 1fr; }
.page-hero h1 { font-size: clamp(32px, 4vw, 50px); letter-spacing: -0.03em; }
.page-hero p { color: #5B647A; line-height: 1.95; font-size: 17px; }
.eyebrow {
  display: inline-flex;
  color: #597EF7;
  font-weight: 900;
  letter-spacing: 0.14em;
  font-size: 13px;
  margin-bottom: 14px;
}
.page-hero-image {
  border-radius: 28px;
  overflow: hidden;
  background: #ECF0FF;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.page-hero-image img { width: 100%; aspect-ratio: 16 / 11; object-fit: contain; background: #ECF0FF; }

.page-content {
  padding: 0 24px 72px;
  display: grid;
  gap: 22px;
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.content-block { padding: 26px; }
.content-block h2 { font-size: 25px; margin-bottom: 12px; }
.content-block p { color: #5B647A; line-height: 1.95; margin: 0 0 12px; }
.content-block.wide { grid-column: 1 / -1; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.stat-card { padding: 22px; }
.stat-card strong { display: block; color: #597EF7; font-size: 30px; margin-bottom: 8px; }
.stat-card span { color: #3F4A66; line-height: 1.7; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.contact-card { padding: 24px; }
.contact-card h2 { color: #1D2B5F; margin: 0 0 10px; font-size: 22px; }
.contact-card p { color: #5B647A; line-height: 1.85; margin: 0; }

.site-footer {
  background: linear-gradient(135deg, #1F1F1F 0%, #2B2B2B 100%);
  color: #E8ECF5;
  padding-top: 54px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 38px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 34px;
}
.footer-brand img { width: 150px; margin-bottom: 18px; }
.footer-brand p,
.footer-links a,
.footer-bottom p { color: rgba(232, 236, 245, 0.82); line-height: 1.8; }
.footer-note { font-size: 14px; }
.footer-links h3 { margin: 0 0 14px; color: #FFFFFF; font-size: 18px; }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: #7AC4F5; }
.footer-bottom {
  border-top: 1px solid rgba(232, 236, 245, 0.12);
  text-align: center;
  padding: 18px 24px;
}
.footer-bottom p { margin: 0; font-size: 14px; }

@media (max-width: 1100px) {
  .desktop-nav { gap: 0; }
  .desktop-nav a { font-size: 13px; padding: 9px 8px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .header-inner { min-height: 66px; padding: 0 16px; }
  .menu-toggle { display: inline-flex; }
  .desktop-nav { display: none; }
  .brand { position: absolute; left: 50%; transform: translateX(-50%); }
  .brand img { width: 126px; }
  .header-btn { padding: 10px 17px; font-size: 14px; }
  .banner-slider { margin: 20px 16px 28px; height: 300px; border-radius: 18px; }
  .quick-nav { overflow-x: auto; grid-template-columns: repeat(8, 210px); padding: 0 16px 8px; scroll-snap-type: x proximity; }
  .quick-card { scroll-snap-align: start; }
  .intro-strip,
  .app-panel,
  .support-panel,
  .page-hero { grid-template-columns: 1fr; }
  .support-image { order: -1; }
  .alt-row,
  .alt-row.reverse { grid-template-columns: 1fr; }
  .alt-row.reverse .alt-image { order: 0; }
  .matrix-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq-list,
  .content-grid,
  .contact-grid,
  .stat-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .banner-slider { height: 218px; }
  .slider-btn { width: 36px; height: 36px; font-size: 20px; }
  .slider-prev { left: 10px; }
  .slider-next { right: 10px; }
  .section { margin-top: 48px; padding: 0 16px; }
  .section-title { display: block; }
  .section-title p { margin-top: 12px; }
  .feature-grid,
  .matrix-grid { grid-template-columns: 1fr; padding: 0 16px; }
  .alt-section,
  .faq-list,
  .app-panel,
  .support-panel,
  .responsible-box,
  .intro-strip,
  .page-content,
  .page-hero { margin-left: 16px; margin-right: 16px; padding-left: 18px; padding-right: 18px; }
  .alt-section { padding-left: 0; padding-right: 0; }
  .alt-row { padding: 18px; border-radius: 22px; }
  .app-panel,
  .support-panel { padding: 18px; }
  .page-hero { padding-top: 44px; }
  .footer-inner { grid-template-columns: 1fr; }
  .header-btn { padding: 9px 13px; font-size: 13px; }
}