:root {
  --ink: #021459;
  --ink-2: #031d73;
  --panel: #062b82;
  --line: rgba(35, 170, 236, 0.24);
  --text: #07172f;
  --muted: #52657c;
  --soft: #eef7ff;
  --surface: #ffffff;
  --surface-blue: #f5fbff;
  --white: #ffffff;
  --teal: #23aaec;
  --teal-dark: #1665a9;
  --lime: #8ddaff;
  --gold: #1c99db;
  --danger: #ff6d5d;
  --blue-hot: #0965ff;
  --blue-mid: #2882e4;
  --card: #ffffff;
  --card-strong: #eef7ff;
  --shadow: 0 24px 70px rgba(2, 20, 89, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Noto Sans SC",
    Arial,
    sans-serif;
  background:
    radial-gradient(circle at 18% 0%, rgba(35, 170, 236, 0.14), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f5fbff 42%, #eef7ff 100%);
  line-height: 1.6;
}

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

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

button,
input {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 76px;
  padding: 0 48px;
  color: var(--white);
  background: rgba(2, 20, 89, 0.72);
  border-bottom: 1px solid rgba(35, 170, 236, 0.18);
  backdrop-filter: blur(18px);
  transition:
    background 180ms ease,
    box-shadow 180ms ease;
}

.site-header.scrolled {
  background: rgba(2, 20, 89, 0.96);
  box-shadow: 0 18px 40px rgba(2, 20, 89, 0.32);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 112px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  color: var(--white);
  font-weight: 900;
  font-size: 1.55rem;
  letter-spacing: 0;
}

.brand-mark::before {
  content: "";
  width: 14px;
  height: 28px;
  margin-right: 9px;
  border-radius: 2px;
  background: linear-gradient(180deg, #23aaec, #0965ff 58%, #1c99db);
  transform: skewX(-13deg);
}

.main-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 22px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.82);
}

.main-nav > a,
.nav-group-button {
  padding: 25px 10px;
  transition: color 160ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.nav-group-button:hover,
.nav-group-button:focus-visible {
  color: var(--teal);
}

.nav-group {
  position: relative;
}

.nav-group-button {
  border: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.nav-menu {
  position: absolute;
  left: 50%;
  min-width: 210px;
  padding: 10px;
  border: 1px solid rgba(35, 170, 236, 0.24);
  border-radius: 8px;
  background: rgba(2, 20, 89, 0.98);
  box-shadow: 0 22px 52px rgba(2, 20, 89, 0.42);
  transform: translate(-50%, 8px);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.nav-group:hover .nav-menu,
.nav-group:focus-within .nav-menu {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}

.nav-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--white);
  background: rgba(35, 170, 236, 0.18);
}

.header-actions,
.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ghost-link {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 800;
  white-space: nowrap;
}

.primary-button {
  color: var(--white);
  background: linear-gradient(135deg, #23aaec 0%, #0965ff 48%, #1665a9 100%);
  box-shadow: 0 16px 36px rgba(9, 101, 255, 0.34);
}

.primary-button:hover,
.primary-button:focus-visible {
  background: linear-gradient(135deg, #4cc7ff 0%, #2882e4 48%, #0965ff 100%);
}

.primary-button.small {
  min-height: 40px;
  padding: 0 18px;
  font-size: 0.92rem;
}

.secondary-button {
  color: var(--white);
  border-color: rgba(35, 170, 236, 0.45);
  background: rgba(35, 170, 236, 0.1);
}

.secondary-button:hover,
.secondary-button:focus-visible {
  border-color: var(--teal);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 23px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
}

.hero,
.page-hero {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--white);
  background: var(--ink);
}

.hero {
  min-height: 760px;
}

.page-hero {
  min-height: 560px;
}

.hero-visual {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.82;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 20, 89, 0.98) 0%, rgba(2, 20, 89, 0.82) 48%, rgba(9, 101, 255, 0.24) 100%),
    linear-gradient(180deg, rgba(2, 20, 89, 0.14), rgba(2, 20, 89, 0.92));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 40px));
  margin-left: max(40px, calc((100vw - 1180px) / 2));
  padding-top: 72px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 0.9rem;
  font-weight: 900;
}

.hero h1,
.section-heading h2,
.platform-copy h2,
.promo-band h2,
.funding-layout h2,
.sponsor-copy h2 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(2.8rem, 6vw, 3.8rem);
}

.page-hero .hero h1,
.page-hero h1 {
  max-width: 760px;
  font-size: clamp(2.5rem, 5vw, 2.8rem);
}

.hero-copy {
  max-width: 650px;
  margin: 26px 0 32px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.12rem;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: min(620px, 100%);
  margin-top: 56px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(35, 170, 236, 0.14);
}

.trust-strip span {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(2, 20, 89, 0.64);
  text-align: center;
}

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  color: var(--white);
  background:
    linear-gradient(90deg, #021459 0%, #1665a9 52%, #021459 100%);
}

.metric-band div {
  min-height: 154px;
  padding: 30px 28px;
  border-right: 1px solid var(--line);
}

.metric-band strong {
  display: block;
  color: var(--teal);
  font-size: clamp(2.1rem, 4vw, 3.7rem);
  line-height: 1;
}

.metric-band span {
  display: block;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.74);
}

.section,
.platform-section,
.steps-section,
.funding-section,
.promo-band {
  padding: 104px 0;
}

.section-inner,
.section-heading,
.market-grid,
.account-grid,
.insight-grid {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 46px;
  text-align: center;
}

.section-heading.left {
  margin-left: 0;
  text-align: left;
}

.section-heading h2,
.platform-copy h2,
.promo-band h2,
.funding-layout h2,
.sponsor-copy h2 {
  color: var(--text);
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.section-heading p:not(.eyebrow),
.platform-copy p,
.promo-band p,
.funding-layout p,
.sponsor-copy p {
  color: var(--muted);
  font-size: 1.03rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  align-items: center;
  gap: 52px;
}

.promo-band {
  background:
    linear-gradient(135deg, rgba(35, 170, 236, 0.1), rgba(9, 101, 255, 0.04)),
    var(--surface-blue);
}

.promo-panel {
  min-height: 270px;
  padding: 34px;
  color: var(--white);
  background:
    linear-gradient(145deg, rgba(35, 170, 236, 0.95), rgba(9, 101, 255, 0.88) 48%, rgba(2, 20, 89, 0.98)),
    #0965ff;
  box-shadow: var(--shadow);
  border-radius: 8px;
}

.promo-panel span {
  color: var(--lime);
  font-weight: 900;
}

.insight-card span {
  color: var(--blue-hot);
  font-weight: 900;
}

.promo-panel strong {
  display: block;
  margin: 16px 0 12px;
  font-size: 2rem;
  line-height: 1.18;
}

.promo-panel p {
  color: rgba(255, 255, 255, 0.74);
}

.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  color: var(--blue-hot);
  font-weight: 900;
}

.text-link::after {
  content: "→";
  margin-left: 8px;
}

.promo-panel .text-link,
.featured .text-link {
  color: var(--white);
}

.market-grid,
.account-grid,
.insight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.market-card,
.account-card,
.insight-card {
  min-height: 320px;
  padding: 28px;
  border: 1px solid rgba(35, 170, 236, 0.28);
  border-radius: 8px;
  background: var(--card);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.market-card:hover,
.account-card:hover,
.insight-card:hover {
  transform: translateY(-4px);
  border-color: rgba(35, 170, 236, 0.62);
  box-shadow: 0 18px 42px rgba(2, 20, 89, 0.28);
}

.market-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  color: var(--white);
  background: linear-gradient(135deg, #23aaec, #0965ff);
  border-radius: 6px;
  font-weight: 900;
}

.market-card h3,
.account-card h3,
.insight-card h3,
.steps h3 {
  margin: 22px 0 12px;
  color: var(--text);
  line-height: 1.25;
  font-size: 1.3rem;
}

.market-card p,
.account-card p,
.insight-card p,
.steps p {
  color: var(--muted);
}

.market-card dl {
  margin: 26px 0 0;
  border-top: 1px solid rgba(35, 170, 236, 0.2);
}

.market-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(35, 170, 236, 0.2);
}

.market-card dt {
  color: var(--muted);
}

.market-card dd {
  margin: 0;
  color: var(--text);
  font-weight: 900;
}

.platform-section {
  color: var(--white);
  background:
    radial-gradient(circle at 75% 18%, rgba(35, 170, 236, 0.18), transparent 28%),
    var(--ink);
}

.detail-section {
  background:
    linear-gradient(135deg, rgba(35, 170, 236, 0.16), rgba(2, 20, 89, 0) 42%),
    var(--ink);
}

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

.detail-panel {
  min-height: 280px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(9, 101, 255, 0.12);
}

.detail-panel h3 {
  margin: 0 0 14px;
  color: var(--white);
  font-size: 1.4rem;
}

.detail-panel p,
.detail-panel li {
  color: rgba(255, 255, 255, 0.72);
}

.detail-panel ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.detail-panel li {
  padding: 8px 12px;
  border: 1px solid rgba(154, 199, 255, 0.26);
  border-radius: 999px;
  background: rgba(35, 170, 236, 0.14);
}

.table-section {
  background:
    linear-gradient(180deg, rgba(35, 170, 236, 0.08), rgba(9, 101, 255, 0.03)),
    var(--surface-blue);
}

.table-wrap {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  overflow-x: auto;
  border: 1px solid rgba(35, 170, 236, 0.28);
  border-radius: 8px;
  background: var(--surface);
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

th,
td {
  padding: 18px 22px;
  border-bottom: 1px solid rgba(35, 170, 236, 0.2);
  text-align: left;
}

th {
  color: var(--white);
  background: linear-gradient(90deg, #1665a9, #0965ff);
  font-weight: 900;
}

td {
  color: var(--muted);
}

.platform-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  align-items: center;
  gap: 64px;
}

.platform-copy h2,
.platform-copy p {
  color: var(--white);
}

.platform-section .section-heading h2,
.platform-section .section-heading p:not(.eyebrow),
.detail-section .section-heading h2,
.detail-section .section-heading p:not(.eyebrow) {
  color: var(--white);
}

.platform-copy p,
.feature-list {
  color: rgba(255, 255, 255, 0.73);
}

.platform-tabs {
  display: flex;
  width: 100%;
  margin: 32px 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  overflow: hidden;
}

.tab {
  flex: 1;
  min-height: 48px;
  border: 0;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
}

.tab.active {
  color: var(--white);
  background: linear-gradient(135deg, #23aaec, #0965ff);
  font-weight: 900;
}

.feature-list {
  min-height: 94px;
  padding-left: 20px;
  margin: 0 0 30px;
}

.feature-list li {
  margin: 8px 0;
}

.device-wall {
  position: relative;
  min-height: 500px;
}

.device-wall img:first-child {
  width: min(100%, 720px);
  border-radius: 8px;
  box-shadow: 0 32px 82px rgba(0, 0, 0, 0.32);
}

.device-wall img:last-child {
  position: absolute;
  right: 4%;
  bottom: 0;
  width: min(36%, 220px);
  border-radius: 26px;
  box-shadow: 0 24px 58px rgba(0, 0, 0, 0.34);
}

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

.account-card {
  min-height: 280px;
}

.account-card strong {
  display: block;
  margin-top: 26px;
  color: var(--text);
  font-size: 1.28rem;
}

.account-card.featured {
  color: var(--white);
  border-color: transparent;
  background:
    linear-gradient(150deg, rgba(35, 170, 236, 0.94), rgba(9, 101, 255, 0.88) 44%, rgba(2, 20, 89, 0.98)),
    var(--panel);
}

.account-card.featured h3,
.account-card.featured strong,
.account-card.featured p {
  color: var(--white);
}

.steps-section {
  background:
    radial-gradient(circle at 12% 0%, rgba(35, 170, 236, 0.1), transparent 26%),
    var(--surface-blue);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(35, 170, 236, 0.22);
}

.steps article {
  min-height: 250px;
  padding: 34px;
  background: var(--surface);
}

.steps span {
  color: var(--teal);
  font-size: 2.1rem;
  font-weight: 900;
}

.funding-section {
  color: var(--white);
  background:
    linear-gradient(135deg, #021459 0%, #1665a9 56%, #021459 100%);
}

.funding-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 70px;
  align-items: center;
}

.funding-layout h2,
.funding-layout p {
  color: var(--white);
}

.funding-layout p {
  color: rgba(255, 255, 255, 0.72);
}

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

.funding-list div {
  min-height: 124px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(9, 101, 255, 0.13);
}

.funding-list span {
  display: block;
  color: rgba(255, 255, 255, 0.64);
}

.funding-list strong {
  display: block;
  margin-top: 12px;
  color: var(--white);
  font-size: 1.24rem;
}

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

.sponsor-section {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.sponsor-section img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
}

.sponsor-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(2, 20, 89, 0.96), rgba(9, 101, 255, 0.22));
}

.sponsor-copy {
  position: relative;
  z-index: 1;
  width: min(520px, calc(100% - 40px));
  margin-left: max(40px, calc((100vw - 1180px) / 2));
}

.sponsor-copy h2,
.sponsor-copy p {
  color: var(--white);
}

.sponsor-copy p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.74);
}

.site-footer {
  padding: 72px max(40px, calc((100vw - 1180px) / 2)) 40px;
  color: rgba(255, 255, 255, 0.7);
  background:
    linear-gradient(180deg, #021459 0%, #010a32 100%);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 60px;
  align-items: start;
}

.footer-top p {
  max-width: 620px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 14px 34px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.82);
}

.risk-note {
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.92rem;
}

.copyright {
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.9rem;
}

@media (max-width: 1020px) {
  .site-header {
    grid-template-columns: auto auto;
    justify-content: space-between;
    padding: 0 22px;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav,
  .header-actions {
    display: none;
  }

  .site-header.menu-open .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 76px;
    display: grid;
    gap: 0;
    padding: 12px 22px 22px;
    background: rgba(6, 17, 31, 0.98);
  }

  .main-nav > a,
  .nav-group-button {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-group-button {
    width: 100%;
    text-align: left;
  }

  .nav-menu {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-width: 0;
    padding: 6px 0 12px;
    border: 0;
    background: transparent;
    box-shadow: none;
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-menu a {
    padding: 9px 10px;
    white-space: normal;
  }

  .hero,
  .page-hero {
    min-height: 720px;
  }

  .metric-band,
  .market-grid,
  .funding-layout,
  .platform-layout,
  .split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .platform-layout,
  .funding-layout,
  .split {
    gap: 38px;
  }

  .device-wall {
    min-height: 430px;
  }
}

@media (max-width: 760px) {
  .hero {
    min-height: 700px;
  }

  .page-hero {
    min-height: 610px;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(6, 17, 31, 0.96), rgba(6, 17, 31, 0.72)),
      linear-gradient(180deg, rgba(6, 17, 31, 0.2), rgba(6, 17, 31, 0.9));
  }

  .hero-content {
    margin: 0 auto;
  }

  .hero-actions,
  .trust-strip,
  .metric-band,
  .market-grid,
  .account-grid,
  .insight-grid,
  .steps,
  .detail-grid,
  .funding-layout,
  .funding-list,
  .platform-layout,
  .split,
  .footer-top {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    align-items: stretch;
  }

  .trust-strip {
    margin-top: 38px;
  }

  .metric-band div {
    min-height: 120px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .section,
  .platform-section,
  .steps-section,
  .funding-section,
  .promo-band {
    padding: 74px 0;
  }

  .section-heading {
    text-align: left;
  }

  .promo-panel,
  .market-card,
  .account-card,
  .insight-card {
    min-height: auto;
  }

  .platform-tabs {
    flex-direction: column;
  }

  .device-wall {
    min-height: 330px;
  }

  .device-wall img:last-child {
    width: 32%;
  }

  .sponsor-section {
    min-height: 460px;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .device-wall {
    min-height: 270px;
  }
}