:root {
  --bg: #050814;
  --panel: rgba(12, 20, 43, .82);
  --panel-strong: rgba(15, 28, 61, .92);
  --line: rgba(117, 221, 255, .22);
  --text: #eef6ff;
  --muted: #a9b8d6;
  --cyan: #55f0ff;
  --blue: #4d8dff;
  --violet: #8c65ff;
  --green: #6bffbf;
  --shadow: 0 22px 70px rgba(0, 0, 0, .36);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(82, 96, 255, .2), transparent 26rem),
    radial-gradient(circle at 82% 20%, rgba(0, 226, 255, .14), transparent 22rem),
    linear-gradient(145deg, #040712 0%, #071327 48%, #12082c 100%);
  line-height: 1.72;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 14px clamp(18px, 4vw, 58px);
  border-bottom: 1px solid rgba(126, 221, 255, .16);
  background: rgba(5, 8, 20, .82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img,
.footer-brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.site-nav a {
  padding: 8px 12px;
  color: var(--muted);
  border-radius: 6px;
  transition: color .2s ease, background .2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
  background: rgba(91, 151, 255, .14);
}

.download-btn,
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  border-radius: 7px;
  color: #04101d;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 0 28px rgba(85, 240, 255, .34);
}

.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid rgba(144, 197, 255, .28);
  border-radius: 7px;
  color: var(--text);
  background: rgba(255, 255, 255, .04);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(144, 197, 255, .28);
  border-radius: 7px;
  background: rgba(255, 255, 255, .04);
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  margin: auto;
  background: var(--text);
  content: "";
}

.menu-toggle span::before {
  transform: translateY(-7px);
}

.menu-toggle span::after {
  transform: translateY(5px);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(320px, 1.12fr);
  gap: clamp(26px, 5vw, 58px);
  align-items: center;
  padding: clamp(44px, 7vw, 92px) clamp(18px, 4vw, 58px) 38px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: .92rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.22;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.1rem, 5vw, 4.7rem);
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.4rem);
}

h3 {
  font-size: 1.08rem;
}

p {
  margin: 0;
  color: var(--muted);
}

.hero-copy p {
  margin-top: 18px;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.signal-strip span {
  padding: 11px 12px;
  border: 1px solid rgba(126, 221, 255, .18);
  border-radius: 7px;
  color: #d9edff;
  background: rgba(12, 24, 55, .64);
}

.hero-media,
.feature-card,
.news-card,
.article-cover,
.info-panel,
.faq-panel,
.route-card,
.client-box {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-media {
  padding: 10px;
  border-radius: 8px;
}

.media-frame {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 7px;
}

.media-frame img,
.article-cover img,
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section {
  padding: 42px clamp(18px, 4vw, 58px);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.section-head p {
  max-width: 680px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  border-radius: 8px;
  overflow: hidden;
}

.feature-card .media-frame {
  border-radius: 0;
}

.feature-body,
.news-body,
.info-panel,
.faq-panel,
.route-card,
.client-box,
.article-body,
.download-panel {
  padding: 18px;
}

.feature-body p,
.news-body p {
  margin-top: 8px;
}

.guide-band {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(280px, 1.1fr);
  gap: 18px;
  align-items: stretch;
}

.info-panel {
  border-radius: 8px;
}

.check-list,
.article-list,
.download-list {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.article-list li,
.download-list li {
  position: relative;
  padding-left: 22px;
  color: var(--muted);
}

.check-list li::before,
.article-list li::before,
.download-list li::before {
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  content: "";
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.news-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 8px;
}

.news-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.read-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--green);
  font-weight: 700;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.faq-panel {
  border-radius: 8px;
}

.page-hero {
  padding: clamp(42px, 6vw, 74px) clamp(18px, 4vw, 58px) 28px;
}

.page-hero p {
  max-width: 790px;
  margin-top: 14px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .42fr);
  gap: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 22px;
  padding: 18px clamp(18px, 4vw, 58px) 46px;
}

.article-main,
.article-side {
  min-width: 0;
}

.article-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 8px;
  margin-bottom: 18px;
}

.article-body {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.article-body p,
.article-body ul {
  margin-top: 14px;
}

.article-body h2 {
  margin-top: 24px;
  font-size: 1.35rem;
}

.article-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.article-nav a,
.side-links a {
  display: block;
  padding: 13px 14px;
  border: 1px solid rgba(126, 221, 255, .18);
  border-radius: 7px;
  color: #dceeff;
  background: rgba(255, 255, 255, .04);
}

.side-links {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.download-panel {
  border: 1px solid rgba(107, 255, 191, .3);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(16, 32, 70, .92), rgba(21, 12, 54, .92));
}

.download-panel .primary-btn {
  width: 100%;
  margin-top: 16px;
}

.client-grid,
.route-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.site-footer {
  padding: 28px clamp(18px, 4vw, 58px);
  border-top: 1px solid rgba(126, 221, 255, .16);
  background: rgba(3, 7, 17, .68);
  text-align: center;
}

.footer-inner {
  display: grid;
  gap: 14px;
  justify-items: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
  color: var(--muted);
  font-size: .94rem;
}

.copyright {
  color: #9fb0cf;
  text-align: center;
}

.transfer-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px;
}

.transfer-card {
  width: min(520px, 100%);
  padding: 28px;
  border: 1px solid rgba(107, 255, 191, .32);
  border-radius: 8px;
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  text-align: center;
}

.progress-track {
  height: 9px;
  margin: 22px 0 14px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, .08);
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  box-shadow: 0 0 18px rgba(85, 240, 255, .48);
  transition: width .25s linear;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto auto auto;
    gap: 12px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    justify-self: end;
  }

  .site-nav {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 68px;
    display: none;
    flex-direction: column;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(5, 10, 25, .97);
  }

  .site-nav.open {
    display: flex;
  }

  .header-download {
    justify-self: end;
    padding-inline: 14px;
  }

  .hero-layout,
  .guide-band,
  .content-grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 12px 14px;
  }

  .brand span {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero-layout,
  .section,
  .page-hero,
  .article-layout {
    padding-left: 14px;
    padding-right: 14px;
  }

  .feature-grid,
  .news-grid,
  .faq-grid,
  .client-grid,
  .route-grid,
  .signal-strip,
  .article-nav {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: grid;
  }

  .download-btn,
  .primary-btn,
  .ghost-btn {
    width: 100%;
  }

  .header-download {
    width: auto;
    min-width: 88px;
  }

  .hero-actions {
    display: grid;
  }
}

.transfer-copy {
  margin-top: 18px;
  font-size: .82rem;
}