html,
body {
  margin: 0;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: #222222;
  background:
    radial-gradient(circle at 10% 0%, rgba(122, 196, 245, 0.22), transparent 32%),
    radial-gradient(circle at 86% 8%, rgba(89, 126, 247, 0.18), transparent 34%),
    linear-gradient(180deg, #F6F8FF 0%, #ECF0FF 46%, #EAF7FF 100%);
  line-height: 1.75;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  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 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

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

.brand img {
  width: 142px;
  max-height: 48px;
  object-fit: contain;
}

.drawer-brand img,
.footer-brand img {
  width: 146px;
  max-height: 52px;
  object-fit: contain;
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex: 1 1 auto;
  overflow: hidden;
}

.desktop-nav a {
  text-decoration: none;
  color: #3F4A66;
  font-size: 14px;
  font-weight: 700;
  padding: 9px 10px;
  border-radius: 999px;
  transition: all 0.22s ease;
  white-space: nowrap;
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: #597EF7;
  background: rgba(89, 126, 247, 0.10);
}

.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;
}

.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);
}

.header-btn {
  flex: 0 0 auto;
  padding: 10px 22px;
  font-size: 14px;
}

.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(89, 126, 247, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.78);
  padding: 9px;
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: #1D2B5F;
  border-radius: 4px;
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(15, 23, 42, 0.42);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.drawer-overlay.show {
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  left: 0;
  top: 0;
  width: min(82vw, 340px);
  height: 100vh;
  z-index: 10001;
  transform: translateX(-105%);
  transition: transform 0.25s ease;
  background: linear-gradient(180deg, #F7F9FF 0%, #ECF0FF 100%);
  box-shadow: 18px 0 40px rgba(29, 43, 95, 0.18);
  padding: 18px;
  overflow-y: auto;
}

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

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(89, 126, 247, 0.16);
}

.drawer-close {
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 50%;
  background: rgba(89, 126, 247, 0.12);
  color: #1D2B5F;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.drawer-nav {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.drawer-nav a {
  text-decoration: none;
  padding: 12px 14px;
  border-radius: 14px;
  color: #1D2B5F;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(89, 126, 247, 0.12);
}

.drawer-nav a.active {
  color: #597EF7;
  border-color: rgba(89, 126, 247, 0.34);
  background: rgba(89, 126, 247, 0.10);
}

.drawer-note {
  margin-top: 18px;
  padding: 14px;
  border-radius: 16px;
  color: #5B647A;
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.container {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.hero-section {
  padding: 34px 0 24px;
}

.banner-slider {
  max-width: 1200px;
  height: 398px;
  margin: 28px auto 36px;
  border-radius: 20px;
  background: #101827;
  box-shadow: 0 22px 48px rgba(16, 24, 39, 0.20);
  overflow: hidden;
  position: relative;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.slide.active {
  opacity: 1;
  z-index: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #101827;
}

.slider-btn {
  position: absolute;
  z-index: 3;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  color: #FFFFFF;
  background: rgba(29, 43, 95, 0.46);
  backdrop-filter: blur(8px);
  font-size: 24px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.slider-btn:hover {
  background: rgba(89, 126, 247, 0.76);
}

.slider-prev {
  left: 18px;
}

.slider-next {
  right: 18px;
}

.slider-dots {
  position: absolute;
  z-index: 4;
  left: 0;
  right: 0;
  bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
}

.slider-dot {
  width: 28px;
  height: 8px;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.46);
  cursor: pointer;
  transition: all 0.2s ease;
}

.slider-dot.active {
  width: 42px;
  background: linear-gradient(135deg, #7580EE, #597EF7, #7AC4F5);
}

.hero-copy {
  text-align: center;
  max-width: 900px;
  margin: 0 auto 22px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #597EF7;
  background: rgba(89, 126, 247, 0.10);
  border: 1px solid rgba(89, 126, 247, 0.18);
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
}

.hero-copy h1,
.page-hero h1 {
  color: #1D2B5F;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.16;
  margin: 16px 0 14px;
}

.hero-copy p,
.page-hero p {
  color: #3F4A66;
  font-size: 17px;
  margin: 0 auto;
}

.section {
  padding: 46px 0;
}

.section-tight {
  padding: 28px 0;
}

.section-title {
  max-width: 820px;
  margin: 0 auto 28px;
  text-align: center;
}

.section-title h2 {
  color: #1D2B5F;
  font-size: clamp(26px, 3vw, 38px);
  margin: 0 0 10px;
}

.section-title p {
  color: #5B647A;
  margin: 0;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.quick-card,
.info-card,
.matrix-card,
.faq-item,
.notice-card,
.feature-card,
.contact-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(89, 126, 247, 0.16);
  border-radius: 22px;
  box-shadow: 0 14px 34px rgba(89, 126, 247, 0.10);
}

.quick-card {
  padding: 18px;
  text-decoration: none;
  transition: all 0.22s ease;
}

.quick-card:hover {
  transform: translateY(-3px);
  border-color: rgba(89, 126, 247, 0.34);
  box-shadow: 0 18px 38px rgba(89, 126, 247, 0.14);
}

.num {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #FFFFFF;
  background: linear-gradient(135deg, #7580EE, #597EF7, #7AC4F5);
  font-weight: 800;
  box-shadow: 0 10px 20px rgba(89, 126, 247, 0.22);
}

.quick-card h3,
.info-card h3,
.matrix-card h3,
.feature-card h3,
.notice-card h3,
.contact-card h3 {
  color: #1D2B5F;
  margin: 12px 0 8px;
}

.quick-card p,
.info-card p,
.matrix-card p,
.feature-card p,
.notice-card p,
.contact-card p {
  color: #5B647A;
  margin: 0;
}

.intro-strip {
  padding: 28px 32px;
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(89, 126, 247, 0.13), rgba(122, 196, 245, 0.14));
  border: 1px solid rgba(89, 126, 247, 0.18);
  color: #3F4A66;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.70);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.info-card {
  padding: 24px;
}

.info-card ul,
.content-list {
  padding-left: 18px;
  margin: 14px 0 0;
  color: #3F4A66;
}

.info-card li,
.content-list li {
  margin: 4px 0;
}

.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 34px;
}

.split-row.reverse .split-image {
  order: 2;
}

.split-row.reverse .split-copy {
  order: 1;
}

.split-image,
.app-image,
.support-image,
.page-image {
  overflow: hidden;
  border-radius: 26px;
  background: #FFFFFF;
  border: 1px solid rgba(89, 126, 247, 0.16);
  box-shadow: 0 20px 44px rgba(89, 126, 247, 0.12);
}

.split-image img,
.app-image img,
.support-image img,
.page-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #FFFFFF;
}

.split-copy {
  padding: 12px;
}

.split-copy h2,
.app-copy h2,
.support-copy h2 {
  color: #1D2B5F;
  font-size: clamp(24px, 3vw, 36px);
  margin: 0 0 12px;
}

.split-copy p,
.app-copy p,
.support-copy p {
  color: #3F4A66;
}

.text-link {
  display: inline-flex;
  align-items: center;
  color: #597EF7;
  font-weight: 800;
  text-decoration: none;
  margin-top: 10px;
}

.text-link::after {
  content: "→";
  margin-left: 6px;
}

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

.matrix-card {
  overflow: hidden;
}

.matrix-card img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  background: #F6F8FF;
}

.matrix-body {
  padding: 20px;
}

.tag {
  display: inline-flex;
  color: #597EF7;
  font-weight: 800;
  font-size: 13px;
  border-radius: 999px;
  background: rgba(89, 126, 247, 0.10);
  padding: 4px 10px;
}

.app-panel,
.support-panel,
.page-panel {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(89, 126, 247, 0.16);
  box-shadow: 0 18px 42px rgba(89, 126, 247, 0.10);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 18px 0 8px;
}

.feature-pill {
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(89, 126, 247, 0.08);
  color: #1D2B5F;
  font-weight: 700;
}

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

.feature-card,
.notice-card,
.contact-card {
  padding: 22px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  padding: 22px 24px;
}

.faq-item h3 {
  color: #1D2B5F;
  margin: 0 0 8px;
  font-size: 18px;
}

.faq-item p {
  color: #5B647A;
  margin: 0;
}

.responsible-box {
  padding: 28px 32px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(29, 43, 95, 0.96), rgba(89, 126, 247, 0.88));
  color: #FFFFFF;
  box-shadow: 0 20px 44px rgba(29, 43, 95, 0.24);
}

.responsible-box h2 {
  margin-top: 0;
}

.responsible-box p,
.responsible-box li {
  color: rgba(255, 255, 255, 0.88);
}

.page-hero {
  padding: 54px 0 22px;
}

.breadcrumb {
  color: #597EF7;
  font-weight: 700;
}

.page-panel {
  margin-top: 24px;
}

.page-copy h2,
.long-content h2 {
  color: #1D2B5F;
  margin: 0 0 12px;
  font-size: 28px;
}

.page-copy p,
.long-content p {
  color: #3F4A66;
  margin: 0 0 14px;
}

.long-content {
  padding: 30px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(89, 126, 247, 0.16);
  box-shadow: 0 18px 42px rgba(89, 126, 247, 0.10);
}

.content-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.content-card {
  padding: 22px;
  border-radius: 22px;
  background: #FFFFFF;
  border: 1px solid rgba(89, 126, 247, 0.14);
}

.content-card h3 {
  color: #1D2B5F;
  margin-top: 0;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.step {
  position: relative;
  padding: 18px 18px 18px 58px;
  border-radius: 20px;
  background: rgba(89, 126, 247, 0.08);
  color: #3F4A66;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #7580EE, #597EF7, #7AC4F5);
  color: #FFFFFF;
  font-weight: 800;
}

.site-footer {
  margin-top: 50px;
  background: linear-gradient(135deg, #1F1F1F 0%, #2B2B2B 100%);
  color: #E8ECF5;
}

.footer-inner {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: 44px 0 34px;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 46px;
}

.footer-brand p {
  max-width: 430px;
  color: rgba(232, 236, 245, 0.76);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.footer-links h3 {
  margin: 0 0 12px;
  color: #FFFFFF;
}

.footer-links a {
  display: block;
  color: rgba(232, 236, 245, 0.78);
  text-decoration: none;
  margin: 8px 0;
}

.footer-links a:hover {
  color: #7AC4F5;
}

.footer-bottom {
  border-top: 1px solid rgba(232, 236, 245, 0.10);
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: rgba(232, 236, 245, 0.68);
  font-size: 13px;
}

@media (max-width: 1120px) {
  .desktop-nav {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-block;
    order: 1;
  }

  .brand {
    order: 2;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .header-btn {
    order: 3;
    padding: 9px 16px;
  }

  .header-inner {
    position: relative;
  }

  .quick-grid,
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .banner-slider {
    height: 320px;
  }
}

@media (max-width: 820px) {
  .container {
    width: min(100% - 28px, 1200px);
  }

  .header-inner {
    min-height: 66px;
    padding: 0 14px;
  }

  .brand img {
    width: 118px;
  }

  .header-btn {
    font-size: 13px;
    padding: 8px 12px;
  }

  .banner-slider {
    height: 220px;
    margin-top: 20px;
    border-radius: 16px;
  }

  .slider-btn {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }

  .quick-grid,
  .info-grid,
  .matrix-grid,
  .support-grid,
  .content-columns {
    grid-template-columns: 1fr;
  }

  .split-row,
  .split-row.reverse,
  .app-panel,
  .support-panel,
  .page-panel {
    grid-template-columns: 1fr;
  }

  .split-row.reverse .split-image,
  .split-row.reverse .split-copy {
    order: initial;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 34px 0;
  }

  .footer-inner,
  .footer-links {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .quick-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 8px;
  }

  .quick-card {
    min-width: 74%;
    scroll-snap-align: start;
  }

  .hero-copy h1,
  .page-hero h1 {
    font-size: 30px;
  }

  .intro-strip,
  .responsible-box,
  .long-content,
  .app-panel,
  .support-panel,
  .page-panel {
    padding: 22px;
  }
}