:root {
  --page-bg: #E6EBF2;
  --surface: #FFFFFF;
  --soft: #F4F7FB;
  --soft-blue: #EAF5FF;
  --brand: #289CFF;
  --brand-deep: #168CE8;
  --line: #D7E8F6;
  --line-alpha: rgba(40, 156, 255, 0.16);
  --title: #2E3C52;
  --text: #3F4D63;
  --muted: #6F7D91;
  --hint: #95A1B2;
  --footer: #2C3B52;
  --shadow: 0 14px 36px rgba(54, 91, 135, 0.14);
  --header-height: 76px;
}
* { box-sizing: border-box; }
html { min-height: 100%; overflow-x: hidden; scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100%;
  padding-top: var(--header-height);
  overflow-x: hidden;
  overflow-y: auto;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 15%, rgba(40, 156, 255, 0.10), transparent 24rem),
    radial-gradient(circle at 92% 38%, rgba(43, 193, 244, 0.08), transparent 22rem),
    var(--page-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a, button { -webkit-tap-highlight-color: transparent; }
button, input, textarea, select { font: inherit; }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 24px rgba(54, 91, 135, 0.12);
}
.header-inner {
  width: min(100%, 1280px);
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  overflow: visible;
}
.brand-logo { display: flex; align-items: center; flex: 0 0 auto; text-decoration: none; }
.brand-logo img { display: block; width: 148px; height: auto; }
.nav-core {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 1.2vw, 18px);
  flex-wrap: nowrap;
}
.nav-core a, .app-entry, .menu-trigger {
  color: #48566D;
  text-decoration: none;
  font-weight: 650;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease;
}
.nav-core a { padding: 10px 5px; }
.nav-core a:hover, .nav-core a.active, .app-entry:hover { color: var(--brand); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.app-entry { padding: 9px 10px; }
.main-btn {
  min-height: 42px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: 999px;
  color: #FFFFFF;
  background: linear-gradient(135deg, #2BC1F4 0%, #26B5F7 55%, #25A8FB 100%);
  box-shadow: 0 9px 20px rgba(37, 168, 251, 0.28);
  text-decoration: none;
  font-weight: 750;
  white-space: nowrap;
  transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 25px rgba(37, 168, 251, 0.34); }
.more-menu { position: relative; flex: 0 0 auto; }
.menu-trigger, .mobile-menu-btn, .drawer-close, .slider-arrow, .slider-dots button {
  border: 0;
  cursor: pointer;
}
.menu-trigger { padding: 9px 11px; border-radius: 10px; background: var(--soft); }
.menu-trigger:hover { color: var(--brand); background: var(--soft-blue); }
.more-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 14px);
  z-index: 10000;
  min-width: 230px;
  max-height: min(72vh, 620px);
  overflow-y: auto;
  padding: 10px;
  border: 1px solid var(--line-alpha);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: 0 18px 42px rgba(54, 91, 135, 0.18);
}
.more-dropdown[hidden] { display: none; }
.more-dropdown a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: #48566D;
  text-decoration: none;
  white-space: nowrap;
}
.more-dropdown a:hover, .more-dropdown a.active { color: var(--brand); background: var(--soft-blue); }
.mobile-header { display: none; }
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 11000;
  background: rgba(31, 49, 74, 0.48);
}
.drawer-overlay[hidden] { display: none; }
.mobile-drawer {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 12000;
  width: min(86vw, 360px);
  overflow-y: auto;
  background: var(--surface);
  box-shadow: 18px 0 50px rgba(31, 61, 96, 0.22);
  transform: translateX(-105%);
  transition: transform .28s ease;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-head {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 17px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .97);
}
.drawer-head img { display: block; width: 140px; height: auto; }
.drawer-close { width: 42px; height: 42px; border-radius: 50%; background: var(--soft); color: #506078; font-size: 28px; line-height: 1; }
.mobile-drawer nav { padding: 12px; }
.mobile-drawer nav a { display: block; padding: 12px 14px; border-radius: 10px; color: #48566D; text-decoration: none; }
.mobile-drawer nav a:hover, .mobile-drawer nav a.active { color: var(--brand); background: var(--soft-blue); }
body.drawer-open { overflow: hidden; }
main { position: relative; z-index: 1; }
.container { width: min(100%, 1280px); margin: 0 auto; padding: 0 24px; }
.banner-slider {
  width: min(calc(100% - 48px), 1280px);
  margin: 24px auto 28px;
  overflow: hidden;
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, .7);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
  touch-action: pan-y;
}
.slides { position: relative; width: 100%; aspect-ratio: 16 / 6; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.slide.active { opacity: 1; visibility: visible; }
.banner-slider img { display: block; width: 100%; height: 100%; object-fit: contain; background: var(--page-bg); }
.slider-arrow {
  position: absolute;
  top: 50%;
  z-index: 3;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  transform: translateY(-50%);
  color: var(--title);
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 8px 18px rgba(54, 91, 135, .18);
  font-size: 26px;
  line-height: 1;
}
.slider-arrow:hover { background: #FFFFFF; }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 0; right: 0; bottom: 14px; z-index: 3; display: flex; justify-content: center; gap: 8px; }
.slider-dots button { width: 9px; height: 9px; padding: 0; border-radius: 50%; background: rgba(255, 255, 255, .70); box-shadow: 0 2px 8px rgba(31, 61, 96, .15); }
.slider-dots button.active { width: 25px; border-radius: 999px; background: var(--brand); }
.notice {
  width: min(calc(100% - 48px), 1280px);
  margin: 0 auto 24px;
  padding: 13px 20px;
  border: 1px solid var(--line-alpha);
  border-radius: 13px;
  background: rgba(255, 255, 255, .92);
  color: #506078;
  box-shadow: 0 8px 24px rgba(54, 91, 135, .08);
}
.section { padding: 48px 0; }
.section.compact { padding: 34px 0; }
.section.soft { background: var(--soft); }
.section.blue-soft { background: var(--soft-blue); }
.section-head { max-width: 820px; margin: 0 0 25px; }
.eyebrow { margin-bottom: 7px; color: var(--brand-deep); font-weight: 750; letter-spacing: .04em; }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.3; }
h1 { margin: 0 0 18px; font-size: clamp(34px, 5vw, 54px); }
h2 { margin: 0 0 15px; font-size: clamp(27px, 3.4vw, 39px); }
h3 { margin: 0 0 10px; font-size: 21px; }
p { margin: 0 0 15px; }
.lead { max-width: 760px; color: var(--muted); font-size: 18px; }
.hero-grid, .split { display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr); align-items: center; gap: 34px; }
.hero-grid.no-image { grid-template-columns: 1fr; }
.content-img { display: block; width: 100%; height: auto; max-height: 560px; object-fit: contain; border-radius: 19px; background: var(--surface); box-shadow: var(--shadow); }
.image-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: center; }
.image-pair .content-img { max-height: 430px; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.card, .zone-card, .info-card, .review-card, .step-card {
  min-width: 0;
  padding: 23px;
  border: 1px solid var(--line-alpha);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 14px 36px rgba(54, 91, 135, .11);
}
.card, .zone-card, .info-card, .review-card { height: 100%; }
.card p, .zone-card p, .info-card p, .review-card p, .step-card p { color: var(--muted); }
.zone-card img { display: block; width: 100%; height: auto; max-height: 300px; object-fit: contain; margin: 0 0 17px; border-radius: 14px; background: var(--soft); }
.text-link { color: var(--brand); text-decoration: none; font-weight: 750; }
.text-link:hover { text-decoration: underline; }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 0; }
.pill-list span { padding: 7px 13px; border-radius: 999px; color: var(--brand-deep); background: var(--soft-blue); font-size: 14px; }
.article-copy { max-width: 930px; }
.article-copy p { margin-bottom: 17px; }
.steps { counter-reset: step; }
.step-card { position: relative; padding-top: 54px; }
.step-card::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; top: 18px; left: 22px; color: var(--brand); font-size: 19px; font-weight: 800; }
.review-card::before { content: "“"; display: block; height: 28px; color: var(--brand); font-size: 44px; line-height: .8; }
.quote { padding: 22px 24px; border: 1px solid var(--line-alpha); border-radius: 16px; background: var(--soft-blue); color: #46617E; }
.faq-list { display: grid; gap: 14px; }
.faq-item, details.faq-item { padding: 19px 21px; border: 1px solid var(--line-alpha); border-radius: 16px; background: var(--surface); box-shadow: 0 8px 24px rgba(54, 91, 135, .07); }
.faq-item h3 { font-size: 18px; }
details.faq-item summary { cursor: pointer; color: var(--title); font-weight: 750; list-style: none; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: "+"; float: right; color: var(--brand); font-size: 22px; line-height: 1; }
details.faq-item[open] summary::after { content: "−"; }
details.faq-item p { margin: 14px 0 0; color: var(--muted); }
.compliance { padding: 21px 23px; border-left: 4px solid var(--brand); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow); }
.service-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.service-list li { position: relative; padding-left: 24px; }
.service-list li::before { content: ""; position: absolute; left: 0; top: .75em; width: 9px; height: 9px; border-radius: 50%; background: linear-gradient(135deg, #2BC1F4, #25A8FB); box-shadow: 0 0 0 5px rgba(40, 156, 255, .10); }
.site-footer { margin-top: 54px; color: #EDF6FF; background: var(--footer); }
.footer-inner { width: min(100%, 1280px); margin: 0 auto; padding: 45px 24px 30px; }
.footer-top { display: grid; grid-template-columns: minmax(280px, 1fr) minmax(320px, 1fr); gap: 36px; align-items: end; }
.footer-brand img { display: block; width: 150px; height: auto; margin-bottom: 14px; }
.footer-brand p { max-width: 620px; margin: 0; color: #D4E4F4; }
.footer-links { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 11px 19px; }
.footer-links a { color: #EDF6FF; text-decoration: none; }
.footer-links a:hover { color: #74C4FF; }
.footer-note { margin-top: 27px; padding-top: 22px; border-top: 1px solid rgba(237, 246, 255, .14); color: #BFD2E7; font-size: 14px; }
@media (max-width: 1120px) {
  .nav-core { gap: 7px; }
  .nav-core a { padding-inline: 3px; }
  .app-entry { display: none; }
  .card-grid.four { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 1024px) {
  :root { --header-height: 66px; }
  .desktop-header { display: none; }
  .mobile-header { display: flex; position: relative; min-height: var(--header-height); padding: 0 16px; }
  .mobile-menu-btn { width: 42px; height: 42px; padding: 9px; display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; border-radius: 11px; background: var(--soft); }
  .mobile-menu-btn span { display: block; width: 100%; height: 2px; border-radius: 2px; background: #48566D; }
  .mobile-logo { position: absolute; left: 50%; transform: translateX(-50%); }
  .mobile-logo img { width: 126px; }
  .mobile-register { min-height: 38px; padding: 0 17px; }
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-grid > .content-img, .split > .content-img { max-width: 820px; margin: 0 auto; }
  .card-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .slides { aspect-ratio: 16 / 7; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}
@media (max-width: 760px) {
  .container { padding: 0 16px; }
  .banner-slider { width: calc(100% - 24px); margin: 14px 12px 22px; border-radius: 15px; }
  .slides { aspect-ratio: 16 / 8; }
  .slider-arrow { width: 38px; height: 38px; font-size: 22px; }
  .slider-arrow.prev { left: 10px; }
  .slider-arrow.next { right: 10px; }
  .slider-dots { bottom: 10px; }
  .notice { width: calc(100% - 24px); margin: 0 12px 20px; padding: 12px 15px; }
  .section { padding: 34px 0; }
  .section.compact { padding: 28px 0; }
  h1 { font-size: 33px; }
  h2 { font-size: 27px; }
  .lead { font-size: 16px; }
  .card-grid, .card-grid.four, .two-col, .image-pair { grid-template-columns: 1fr; }
  .card, .zone-card, .info-card, .review-card, .step-card { padding: 19px; }
  .footer-inner { padding-inline: 16px; }
}
@media (max-width: 390px) {
  .mobile-logo img { width: 108px; }
  .mobile-register { padding: 0 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}