:root {
  --bg-dark: #06111d;
  --bg-dark-soft: #0d2035;
  --bg-light: #eef4f8;
  --paper: rgba(255, 255, 255, 0.94);
  --paper-strong: #ffffff;
  --line: rgba(10, 33, 59, 0.1);
  --line-strong: rgba(136, 210, 255, 0.16);
  --text: #10243d;
  --text-soft: #4d6784;
  --white: #eef8ff;
  --cyan: #68e4ff;
  --cyan-soft: rgba(104, 228, 255, 0.14);
  --blue: #2e9fff;
  --amber: #ffb667;
  --green: #8df0b8;
  --shadow: 0 24px 54px rgba(7, 21, 36, 0.14);
  --shadow-strong: 0 30px 80px rgba(0, 0, 0, 0.26);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --container: min(1180px, calc(100vw - 48px));
  --body-font: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display-font: "Alibaba PuHuiTi 3.0", "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  font-family: var(--body-font);
  background:
    linear-gradient(180deg, #05111d 0%, #0a1728 34%, #dfeaf3 34%, #f3f7fa 100%);
}

body::selection {
  background: rgba(104, 228, 255, 0.3);
}

body.js-enhanced .reveal {
  transition: opacity 0.7s ease, transform 0.7s ease;
}

body.js-enhanced.reveal-ready .reveal[data-reveal="pending"] {
  opacity: 0;
  transform: translateY(22px);
}

body.js-enhanced .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

body,
button,
a {
  font: inherit;
}

button {
  border: 0;
}

.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.aurora,
.radial-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(34px);
}

.aurora-a {
  top: -120px;
  left: -150px;
  width: 540px;
  height: 540px;
  background: radial-gradient(circle, rgba(64, 184, 255, 0.36) 0%, rgba(64, 184, 255, 0) 72%);
  animation: float-a 14s ease-in-out infinite;
}

.aurora-b {
  top: 70px;
  right: -180px;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(255, 182, 103, 0.2) 0%, rgba(255, 182, 103, 0) 70%);
  animation: float-b 16s ease-in-out infinite;
}

.grid-wave {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(115, 197, 244, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(115, 197, 244, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.88), transparent 72%);
}

.radial-left {
  left: -120px;
  top: 220px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(46, 159, 255, 0.22) 0%, rgba(46, 159, 255, 0) 72%);
}

.radial-right {
  right: -140px;
  top: 260px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(255, 182, 103, 0.14) 0%, rgba(255, 182, 103, 0) 74%);
}

.topbar,
main,
.footer {
  width: var(--container);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 18px;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
  padding: 14px 18px;
  border: 1px solid rgba(120, 209, 255, 0.14);
  border-radius: 22px;
  background: rgba(7, 22, 39, 0.68);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 34px rgba(4, 12, 24, 0.16);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.topbar.is-scrolled {
  transform: translateY(-2px);
  background: rgba(7, 22, 39, 0.78);
  box-shadow: 0 22px 40px rgba(4, 12, 24, 0.2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #f3f9ff;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 12px);
  grid-template-rows: repeat(2, 12px);
  gap: 4px;
  width: 30px;
  height: 30px;
}

.brand-mark span {
  border-radius: 5px;
  background: linear-gradient(135deg, rgba(104, 228, 255, 0.96), rgba(46, 159, 255, 0.58));
  box-shadow: 0 0 18px rgba(104, 228, 255, 0.28);
}

.brand-mark span:last-child {
  grid-column: 1 / span 2;
  width: 18px;
  justify-self: center;
  background: linear-gradient(135deg, rgba(255, 182, 103, 0.95), rgba(255, 182, 103, 0.34));
}

.brand-text {
  display: grid;
  gap: 2px;
}

.brand-text strong,
.brand-text em {
  font-style: normal;
}

.brand-text strong {
  font-family: var(--display-font);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.brand-text em {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(236, 246, 255, 0.72);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.nav a,
.topbar-action,
.footer-link {
  text-decoration: none;
  color: #dcecf9;
}

.nav a {
  opacity: 0.86;
  transition: opacity 0.22s ease, color 0.22s ease;
}

.nav a:hover,
.nav a:focus-visible,
.topbar-action:hover,
.topbar-action:focus-visible,
.footer-link:hover,
.footer-link:focus-visible {
  color: #ffffff;
  opacity: 1;
}

.topbar-action {
  padding: 11px 16px;
  border-radius: 999px;
  border: 1px solid rgba(104, 228, 255, 0.18);
  background: linear-gradient(135deg, rgba(104, 228, 255, 0.18), rgba(46, 159, 255, 0.28));
  white-space: nowrap;
}

section {
  position: relative;
}

.section-dark {
  color: var(--white);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(460px, 0.96fr);
  gap: 34px;
  align-items: center;
  padding: 88px 0 74px;
}

.hero-copy {
  max-width: 640px;
}

.hero-badge,
.section-tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
}

.hero-badge {
  color: #d2f7ff;
  background: rgba(104, 228, 255, 0.1);
  border: 1px solid rgba(104, 228, 255, 0.18);
}

.hero h1 {
  margin: 20px 0 16px;
  font-family: var(--display-font);
  font-size: clamp(2.9rem, 6vw, 5.1rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.hero h1 span {
  display: block;
  color: var(--cyan);
  text-shadow: 0 0 26px rgba(104, 228, 255, 0.14);
}

.hero-lead,
.section-heading p,
.strip-card p,
.download-card p,
.faq-item p,
.feed-item p,
.signal-card li,
.footer p {
  line-height: 1.78;
}

.hero-lead {
  margin: 0;
  font-size: 1.08rem;
  color: rgba(233, 246, 255, 0.82);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 32px 0 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 16px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #071522;
  background: linear-gradient(135deg, var(--cyan), #9af3ff);
  box-shadow: 0 18px 38px rgba(104, 228, 255, 0.18);
}

.btn-secondary {
  color: #fff8ef;
  background: linear-gradient(135deg, #f5a44f, #ffcb83);
  box-shadow: 0 18px 38px rgba(255, 182, 103, 0.16);
}

.btn-ghost {
  color: #e5f4ff;
  border: 1px solid rgba(198, 233, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

.hero-status {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-status span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(175, 216, 245, 0.14);
  background: rgba(238, 248, 255, 0.06);
  color: rgba(239, 248, 255, 0.78);
  font-size: 0.92rem;
}

.hero-visual {
  min-height: 520px;
}

.console-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(122, 213, 255, 0.18);
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(12, 28, 47, 0.9), rgba(8, 20, 33, 0.98));
  box-shadow: var(--shadow-strong);
}

.console-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(104, 228, 255, 0.14), transparent 34%),
    radial-gradient(circle at bottom left, rgba(255, 182, 103, 0.12), transparent 32%);
  pointer-events: none;
}

.console-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(123, 194, 232, 0.12);
}

.console-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(222, 244, 255, 0.32);
}

.console-dot:first-child {
  background: #ff8e7a;
}

.console-dot:nth-child(2) {
  background: #ffcf6f;
}

.console-dot:nth-child(3) {
  background: #68e4ff;
}

.console-title {
  margin-left: 8px;
  color: rgba(237, 248, 255, 0.78);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
}

.console-body {
  display: grid;
  grid-template-columns: 126px 1fr;
  min-height: 438px;
}

.console-sidebar {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 24px 18px;
  border-right: 1px solid rgba(123, 194, 232, 0.08);
  background: rgba(7, 20, 34, 0.42);
}

.console-sidebar span {
  padding: 12px 14px;
  border-radius: 14px;
  color: rgba(222, 242, 255, 0.68);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.92rem;
}

.console-sidebar .active {
  color: #071522;
  background: linear-gradient(135deg, rgba(104, 228, 255, 1), rgba(86, 193, 255, 0.92));
  box-shadow: 0 8px 24px rgba(104, 228, 255, 0.22);
}

.console-main {
  display: grid;
  gap: 18px;
  padding: 22px;
}

.console-cards,
.console-grid,
.info-strip,
.download-grid {
  display: grid;
  gap: 18px;
}

.console-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.console-cards article,
.signal-card,
.console-feed,
.strip-card,
.download-card,
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.console-cards article,
.signal-card,
.console-feed {
  padding: 18px;
  border-color: rgba(122, 213, 255, 0.09);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: none;
}

.console-cards small,
.mini-title,
.download-head small,
.strip-card small {
  display: block;
  color: rgba(221, 243, 255, 0.58);
  letter-spacing: 0.08em;
}

.console-cards strong {
  display: block;
  margin: 10px 0 8px;
  color: #ffffff;
  font-size: 1.86rem;
  line-height: 1;
}

.console-cards em {
  color: rgba(211, 237, 255, 0.8);
  font-style: normal;
}

.console-grid {
  grid-template-columns: 1.08fr 0.92fr;
  gap: 14px;
}

.signal-card ul {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.signal-card li {
  position: relative;
  padding-left: 18px;
  color: rgba(237, 248, 255, 0.78);
}

.signal-card li::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 12px rgba(141, 240, 184, 0.34);
}

.console-feed {
  display: grid;
  gap: 12px;
}

.feed-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.feed-item p {
  margin: 8px 0 0;
  color: rgba(236, 248, 255, 0.84);
}

.feed-tag {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--amber);
  color: #071522;
  font-size: 0.8rem;
}

.feed-tag-soft {
  background: var(--cyan);
}

.section-light {
  padding-top: 38px;
}

.overview-section,
.download-section,
.faq-section {
  padding-top: 86px;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 28px;
}

.section-tag {
  color: #0c2d49;
  background: rgba(46, 159, 255, 0.12);
  border: 1px solid rgba(46, 159, 255, 0.12);
}

.section-heading h2,
.strip-card strong,
.download-card h3,
.footer strong {
  font-family: var(--display-font);
}

.section-heading h2 {
  margin: 16px 0 12px;
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.section-heading p {
  margin: 0;
  color: var(--text-soft);
  font-size: 1.02rem;
}

.info-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.strip-card,
.download-card,
.faq-item {
  padding: 24px;
  background: var(--paper);
}

.strip-card strong,
.download-card h3 {
  display: block;
  margin: 12px 0 10px;
  font-size: 1.2rem;
}

.strip-card p,
.download-card p,
.faq-item p {
  margin: 0;
  color: var(--text-soft);
}

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

.download-card {
  position: relative;
  overflow: hidden;
  min-height: 332px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 253, 0.94));
}

.download-card::after {
  content: "";
  position: absolute;
  inset: auto -34px -34px auto;
  width: 140px;
  height: 140px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(104, 228, 255, 0.18), rgba(104, 228, 255, 0) 70%);
}

.download-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.download-pill {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(46, 159, 255, 0.14);
  color: #0f5789;
  white-space: nowrap;
}

.download-pill-soft {
  background: rgba(255, 182, 103, 0.18);
  color: #9a5a1f;
}

.download-meta {
  display: grid;
  gap: 10px;
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
  color: var(--text);
}

.download-meta li {
  padding: 12px 14px;
  border: 1px solid rgba(12, 38, 68, 0.06);
  border-radius: 14px;
  background: rgba(13, 37, 64, 0.04);
}

.btn-download {
  position: relative;
  z-index: 1;
  width: 100%;
}

.faq-list {
  display: grid;
  gap: 16px;
  padding-bottom: 86px;
}

.faq-item {
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--text);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "展开";
  float: right;
  color: var(--text-soft);
  font-weight: 400;
}

.faq-item[open] summary::after {
  content: "收起";
}

.faq-item p {
  margin-top: 14px;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 0 0 34px;
}

.footer strong {
  display: block;
  margin-bottom: 8px;
}

.footer p {
  margin: 0;
  color: var(--text-soft);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 50;
  min-width: 320px;
  max-width: min(90vw, 540px);
  padding: 16px 18px;
  border: 1px solid rgba(104, 228, 255, 0.16);
  border-radius: 16px;
  background: rgba(8, 21, 36, 0.92);
  color: #eff8ff;
  box-shadow: 0 20px 50px rgba(4, 10, 18, 0.34);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(24px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.reveal {
  opacity: 1;
  transform: none;
}

@keyframes float-a {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(34px, 18px, 0);
  }
}

@keyframes float-b {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(-32px, -22px, 0);
  }
}

@media (max-width: 1120px) {
  .topbar {
    top: 10px;
    flex-wrap: wrap;
  }

  .hero,
  .info-strip,
  .download-grid,
  .console-cards,
  .console-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 60px;
  }

  .hero-visual {
    min-height: 0;
  }

  .console-body {
    grid-template-columns: 112px 1fr;
  }
}

@media (max-width: 820px) {
  body {
    background: linear-gradient(180deg, #05111d 0%, #0a1728 28%, #dfeaf3 28%, #f3f7fa 100%);
  }

  .topbar {
    width: min(1180px, calc(100vw - 24px));
    margin-top: 12px;
    padding: 14px;
  }

  main,
  .footer {
    width: min(1180px, calc(100vw - 24px));
  }

  .nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px 14px;
  }

  .topbar-action {
    width: 100%;
    justify-content: center;
  }

  .hero {
    gap: 24px;
    padding: 50px 0 64px;
  }

  .console-body {
    grid-template-columns: 1fr;
  }

  .console-sidebar {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(123, 194, 232, 0.08);
  }

  .overview-section,
  .download-section,
  .faq-section {
    padding-top: 64px;
  }

  .section-heading h2 {
    font-size: clamp(1.86rem, 8vw, 2.6rem);
  }

  .footer {
    flex-direction: column;
    align-items: start;
    padding-bottom: 28px;
  }

  .toast {
    min-width: auto;
    width: calc(100vw - 24px);
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: clamp(2.3rem, 13vw, 3.4rem);
  }

  .hero-actions,
  .btn {
    width: 100%;
  }

  .download-head {
    flex-direction: column;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}