* {
  box-sizing: border-box;
}

:root {
  --brand: rgb(89, 126, 247);
  --brand-hex: #597EF7;
  --brand-soft: #ECF0FF;
  --page-soft: #F6F8FF;
  --sky-soft: #EAF7FF;
  --text-blue: #1D2B5F;
  --text-main: #222222;
  --text-muted: #5B647A;
  --white: #FFFFFF;
  --footer-dark: #1F1F1F;
  --footer-card: #2B2B2B;
  --deep: #101827;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text-main);
  background: #F6F8FF;
  line-height: 1.75;
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  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);
  transition: box-shadow .25s ease, background .25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 12px 32px rgba(89, 126, 247, 0.16);
}

.desktop-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand img {
  width: 158px;
  max-height: 52px;
  object-fit: contain;
}

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

.desktop-nav a {
  color: #1D2B5F;
  font-size: 15px;
  font-weight: 700;
  padding: 9px 12px;
  border-radius: 999px;
  transition: color .2s ease, background .2s ease, transform .2s ease;
  white-space: nowrap;
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: rgb(89, 126, 247);
  background: rgba(255, 255, 255, .72);
  transform: translateY(-1px);
}

.main-btn {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #7580EE 0%, #597EF7 48%, #7AC4F5 100%);
  color: #FFFFFF;
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(89, 126, 247, 0.28);
  min-height: 42px;
  padding: 0 22px;
  font-weight: 800;
  letter-spacing: .02em;
  transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,.85) 35%, transparent 70%);
  transform: translateX(-120%);
  animation: btnShine 2.4s infinite;
  z-index: -1;
}

.main-btn::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid rgba(255,255,255,.65);
  box-shadow:
    0 0 8px rgba(122,196,245,.55),
    0 0 18px rgba(89,126,247,.35);
  pointer-events: none;
}

.main-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(89, 126, 247, 0.34);
}

@keyframes btnShine {
  0% { transform: translateX(-120%); }
  55% { transform: translateX(120%); }
  100% { transform: translateX(120%); }
}

.header-btn {
  flex: 0 0 auto;
}

.mobile-header {
  display: none;
  min-height: 66px;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  gap: 10px;
}

.menu-toggle,
.drawer-close,
.slider-arrow {
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

.menu-toggle {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .78);
  box-shadow: 0 10px 24px rgba(89, 126, 247, .12);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: #1D2B5F;
  border-radius: 8px;
}

.mobile-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.mobile-logo img {
  width: 128px;
  max-height: 44px;
  object-fit: contain;
}

.mobile-register {
  min-height: 38px;
  padding: 0 14px;
  font-size: 13px;
}

.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .46);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
  z-index: 10000;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: min(84vw, 320px);
  height: 100vh;
  background: linear-gradient(135deg, #FFFFFF 0%, #ECF0FF 62%, #EAF7FF 100%);
  z-index: 10001;
  transform: translateX(-105%);
  transition: transform .28s ease;
  box-shadow: 24px 0 48px rgba(29, 43, 95, .18);
  padding: 18px;
  overflow-y: auto;
}

.drawer-open {
  overflow: hidden;
}

.drawer-open .drawer-mask {
  opacity: 1;
  pointer-events: auto;
}

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

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.drawer-logo img {
  width: 142px;
  max-height: 50px;
  object-fit: contain;
}

.drawer-close {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  font-size: 26px;
  line-height: 1;
  color: #1D2B5F;
  background: rgba(255, 255, 255, .82);
}

.drawer-nav {
  display: grid;
  gap: 10px;
}

.drawer-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 14px;
  color: #1D2B5F;
  font-weight: 800;
  background: rgba(255, 255, 255, .68);
  border: 1px solid rgba(89,126,247,0.12);
}

.drawer-nav a.active,
.drawer-nav a:hover {
  color: rgb(89, 126, 247);
  border-color: rgba(89,126,247,.28);
  box-shadow: 0 12px 26px rgba(89,126,247,.12);
}

.drawer-note {
  margin-top: 18px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(89,126,247,.16);
  color: #5B647A;
  font-size: 13px;
}

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

.section {
  padding: 42px 0;
}

.section-tight {
  padding: 24px 0;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 24px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgb(89, 126, 247);
  background: rgba(89, 126, 247, .10);
  border: 1px solid rgba(89,126,247,.16);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 800;
}

h1,
h2,
h3 {
  color: #1D2B5F;
  line-height: 1.3;
  margin: 0;
}

h1 {
  font-size: clamp(32px, 5vw, 56px);
  letter-spacing: -.03em;
}

h2 {
  font-size: clamp(25px, 3.4vw, 38px);
  letter-spacing: -.02em;
}

h3 {
  font-size: 20px;
}

p {
  margin: 0;
  color: #5B647A;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: rgb(89, 126, 247);
  font-weight: 800;
}

.text-link::after {
  content: "›";
  font-size: 20px;
  line-height: 1;
}

.banner-slider {
  max-width: 1200px;
  margin: 28px auto 42px;
  border-radius: 18px;
  background: #101827;
  box-shadow: 0 24px 55px rgba(16, 24, 39, 0.22);
  overflow: hidden;
  position: relative;
  height: clamp(220px, 34vw, 420px);
}

.slider-track {
  height: 100%;
  position: relative;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity .55s ease;
  display: grid;
  grid-template-columns: 1fr;
  place-items: center;
  background:
    radial-gradient(circle at 16% 18%, rgba(122,196,245,.22), transparent 28%),
    linear-gradient(135deg, #101827 0%, #0F172A 100%);
}

.slide.active {
  opacity: 1;
  pointer-events: auto;
}

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

.slide-copy {
  position: absolute;
  left: clamp(18px, 4vw, 54px);
  bottom: clamp(18px, 4vw, 46px);
  width: min(430px, calc(100% - 120px));
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(16, 24, 39, .74);
  border: 1px solid rgba(255,255,255,.16);
  backdrop-filter: blur(10px);
}

.slide-copy strong {
  color: #FFFFFF;
  font-size: clamp(18px, 2.4vw, 30px);
  display: block;
  margin-bottom: 6px;
}

.slide-copy span {
  color: rgba(255, 255, 255, .82);
  font-size: 14px;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .82);
  color: #1D2B5F;
  font-size: 28px;
  display: grid;
  place-items: center;
  z-index: 3;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .18);
}

.slider-arrow.prev {
  left: 16px;
}

.slider-arrow.next {
  right: 16px;
}

.slider-dots {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 4;
}

.slider-dots button {
  width: 9px;
  height: 9px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, .58);
  cursor: pointer;
  transition: width .25s ease, background .25s ease;
}

.slider-dots button.active {
  width: 28px;
  background: linear-gradient(135deg, #7580EE 0%, #597EF7 48%, #7AC4F5 100%);
}

.quick-pills {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 4px 2px 14px;
  scrollbar-width: thin;
}

.pill-card,
.card,
.zone-card,
.info-card,
.article-card,
.aside-card,
.faq-item,
.topic-card,
.board-card {
  background: rgba(255,255,255,0.86);
  border: 1px solid rgba(89,126,247,0.16);
  box-shadow: 0 16px 40px rgba(89,126,247,0.10);
}

.pill-card {
  min-width: 190px;
  border-radius: 999px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 10px;
  align-items: center;
  transition: border-color .2s ease, transform .2s ease;
}

.pill-card:hover {
  transform: translateY(-2px);
  border-color: rgba(89,126,247,.38);
}

.pill-num {
  grid-row: span 2;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #FFFFFF;
  background: linear-gradient(135deg, #7580EE 0%, #597EF7 52%, #7AC4F5 100%);
  font-weight: 900;
  font-size: 13px;
}

.pill-card strong {
  color: #1D2B5F;
  font-size: 15px;
}

.pill-card span {
  color: #5B647A;
  font-size: 12px;
  white-space: nowrap;
}

.observe-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: center;
  padding: 22px;
  border-radius: 22px;
  background: linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 55%, #EAF7FF 100%);
  border: 1px solid rgba(89,126,247,.16);
  box-shadow: 0 18px 44px rgba(89,126,247,.10);
}

.observe-strip h2 {
  font-size: clamp(22px, 3vw, 30px);
}

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

.topic-card,
.board-card,
.info-card,
.card {
  border-radius: 22px;
  padding: 22px;
}

.topic-card .tag,
.zone-card .tag,
.info-card .tag,
.article-card .tag,
.aside-card .tag {
  display: inline-flex;
  color: rgb(89,126,247);
  background: rgba(89,126,247,.10);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 12px;
}

.topic-card p,
.board-card p,
.info-card p,
.article-card p,
.aside-card p,
.zone-card p {
  margin-top: 10px;
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.board-card {
  padding: 18px;
}

.board-card b {
  color: rgb(89,126,247);
  display: block;
  font-size: 22px;
  margin-bottom: 8px;
}

.board-card h3 {
  font-size: 17px;
}

.deep-list {
  display: grid;
  gap: 28px;
}

.deep-row {
  display: grid;
  grid-template-columns: minmax(0, .94fr) minmax(0, 1.06fr);
  gap: 28px;
  align-items: center;
}

.deep-row.reverse {
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
}

.figure-frame {
  border-radius: 26px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(236,240,255,.72));
  border: 1px solid rgba(89,126,247,.16);
  box-shadow: 0 20px 46px rgba(89,126,247,.12);
}

.content-img,
.zone-card img,
.app-section img,
.banner-slider img {
  max-width: 100%;
  height: auto;
}

.figure-frame img {
  width: 100%;
  max-height: 330px;
  object-fit: contain;
  object-position: center;
  border-radius: 18px;
  background: rgba(236,240,255,.42);
}

.deep-copy {
  padding: 4px;
}

.point-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.point-list li {
  position: relative;
  padding-left: 24px;
  color: #5B647A;
}

.point-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgb(89,126,247);
  box-shadow: 0 0 0 5px rgba(89,126,247,.12);
}

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

.zone-card {
  border-radius: 24px;
  overflow: hidden;
}

.zone-card.wide {
  grid-column: span 2;
}

.zone-card .zone-img {
  height: 190px;
  padding: 12px 12px 0;
  background: linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 55%, #EAF7FF 100%);
}

.zone-card .zone-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 18px;
}

.zone-body {
  padding: 20px;
}

.zone-card.text-only {
  padding: 22px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(circle at 20% 10%, rgba(122,196,245,.18), transparent 36%),
    rgba(255,255,255,.86);
}

.app-section {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 34px;
  align-items: center;
  padding: 34px;
  border-radius: 30px;
  background: linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 55%, #EAF7FF 100%);
  border: 1px solid rgba(89,126,247,.18);
  box-shadow: 0 22px 48px rgba(89,126,247,.12);
}

.app-section img {
  width: 100%;
  max-height: 340px;
  object-fit: contain;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.feature-list span {
  padding: 12px 14px;
  border-radius: 16px;
  color: #1D2B5F;
  font-weight: 800;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(89,126,247,.14);
}

.safe-layout {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 24px;
  align-items: start;
}

.safe-copy {
  border-radius: 26px;
  padding: 26px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(89,126,247,.16);
  box-shadow: 0 16px 40px rgba(89,126,247,.10);
}

.safe-copy img {
  margin-top: 18px;
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  border-radius: 18px;
  background: rgba(236,240,255,.48);
}

.safe-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.info-card b {
  color: rgb(89,126,247);
  font-size: 20px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.faq-item {
  border-radius: 22px;
  padding: 22px;
}

.faq-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.page-hero {
  padding: 54px 0 34px;
  background:
    radial-gradient(circle at 20% 14%, rgba(122,196,245,.28), transparent 30%),
    linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 50%, #EAF7FF 100%);
  border-bottom: 1px solid rgba(89,126,247,.14);
}

.page-hero .container {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 28px;
  align-items: center;
}

.page-hero p {
  max-width: 760px;
  margin-top: 16px;
  font-size: 17px;
}

.hero-card {
  border-radius: 26px;
  padding: 18px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(89,126,247,.16);
  box-shadow: 0 18px 44px rgba(89,126,247,.12);
}

.hero-card img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: 18px;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 24px;
  align-items: start;
}

.article-card {
  border-radius: 26px;
  padding: 30px;
}

.article-card h2 {
  margin-top: 28px;
  font-size: 25px;
}

.article-card h2:first-child {
  margin-top: 0;
}

.article-card p {
  margin-top: 14px;
}

.aside-card {
  border-radius: 24px;
  padding: 22px;
  position: sticky;
  top: 100px;
}

.aside-card img {
  width: 100%;
  max-height: 220px;
  object-fit: contain;
  border-radius: 16px;
  background: rgba(236,240,255,.46);
  margin: 12px 0 16px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 22px;
}

.notice-band {
  border-radius: 24px;
  padding: 24px;
  background: linear-gradient(135deg, #F7F9FF 0%, #ECF0FF 55%, #EAF7FF 100%);
  border: 1px solid rgba(89,126,247,.16);
  color: #1D2B5F;
  font-weight: 700;
  margin-top: 22px;
}

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

.site-footer {
  margin-top: 50px;
  background: linear-gradient(135deg, #1F1F1F 0%, #2B2B2B 100%);
  color: rgba(255,255,255,.86);
  padding: 46px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 28px;
}

.footer-brand img {
  width: 156px;
  max-height: 52px;
  object-fit: contain;
  margin-bottom: 14px;
}

.footer-brand p,
.footer-bottom p {
  color: rgba(255,255,255,.70);
}

.footer-links h3 {
  color: #FFFFFF;
  font-size: 17px;
  margin-bottom: 12px;
}

.footer-links a {
  display: block;
  color: rgba(255,255,255,.72);
  margin: 7px 0;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.10);
  margin-top: 30px;
  padding-top: 18px;
  font-size: 13px;
}

@media (max-width: 1080px) {
  .desktop-nav a {
    padding: 8px 8px;
    font-size: 14px;
  }
  .board-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 920px) {
  .desktop-header {
    display: none;
  }
  .mobile-header {
    display: flex;
  }
  .page-main {
    padding-top: 0;
  }
  .matrix-grid,
  .zone-grid,
  .feature-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .deep-row,
  .deep-row.reverse,
  .app-section,
  .safe-layout,
  .page-hero .container,
  .page-layout {
    grid-template-columns: 1fr;
  }
  .deep-row.reverse .figure-frame {
    order: 2;
  }
  .deep-row.reverse .deep-copy {
    order: 1;
  }
  .aside-card {
    position: static;
  }
  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 24px, 1200px);
  }
  .banner-slider {
    margin: 18px auto 28px;
    border-radius: 16px;
    height: clamp(180px, 54vw, 240px);
  }
  .slide-copy {
    left: 12px;
    bottom: 42px;
    width: calc(100% - 24px);
    padding: 12px 14px;
  }
  .slide-copy strong {
    font-size: 17px;
  }
  .slide-copy span {
    display: none;
  }
  .slider-arrow {
    width: 34px;
    height: 34px;
    font-size: 22px;
  }
  .slider-arrow.prev {
    left: 10px;
  }
  .slider-arrow.next {
    right: 10px;
  }
  .observe-strip,
  .matrix-grid,
  .board-grid,
  .zone-grid,
  .safe-grid,
  .faq-grid,
  .feature-list,
  .feature-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .zone-card.wide,
  .footer-brand {
    grid-column: auto;
  }
  .section {
    padding: 32px 0;
  }
  .section-tight {
    padding: 20px 0;
  }
  .article-card,
  .app-section,
  .safe-copy {
    padding: 22px;
  }
  .page-hero {
    padding: 34px 0 22px;
  }
  .mobile-logo img {
    width: 112px;
  }
  .mobile-register {
    padding: 0 12px;
    font-size: 12px;
  }
}