:root {
  color-scheme: dark;
  --ink: #f7fbff;
  --muted: rgba(222, 235, 255, 0.72);
  --soft: rgba(222, 235, 255, 0.54);
  --line: rgba(177, 215, 255, 0.18);
  --glass: rgba(12, 31, 66, 0.58);
  --glass-strong: rgba(18, 45, 91, 0.72);
  --blue: #2d8cff;
  --cyan: #39d7ff;
  --ice: #b8ecff;
  --violet: #7f8cff;
  --navy: #050b1d;
  --deep: #07142d;
  --shadow: 0 28px 90px rgba(0, 26, 76, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 8%, rgba(45, 140, 255, 0.38), transparent 32rem),
    radial-gradient(circle at 88% 12%, rgba(57, 215, 255, 0.22), transparent 28rem),
    linear-gradient(180deg, #050b1d 0%, #081733 46%, #0b1730 100%);
  line-height: 1.62;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(184, 236, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 236, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0.2));
  content: "";
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 16px;
  left: 50%;
  width: min(1180px, calc(100% - 32px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transform: translateX(-50%);
  padding: 12px 14px 12px 16px;
  border: 1px solid rgba(184, 236, 255, 0.2);
  border-radius: 8px;
  background: rgba(7, 20, 45, 0.58);
  box-shadow: 0 18px 60px rgba(0, 16, 48, 0.28);
  backdrop-filter: blur(22px) saturate(1.35);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(57, 215, 255, 0.54);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(45, 140, 255, 0.5), rgba(57, 215, 255, 0.16)),
    rgba(255, 255, 255, 0.08);
  box-shadow:
    inset 0 0 20px rgba(184, 236, 255, 0.24),
    0 0 28px rgba(57, 215, 255, 0.18);
  font-size: 13px;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}

.top-nav a {
  padding: 8px 11px;
  border-radius: 8px;
  color: rgba(247, 251, 255, 0.78);
}

.top-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
}

.hero-canvas,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-shade {
  background:
    radial-gradient(circle at 78% 30%, rgba(57, 215, 255, 0.24), transparent 25rem),
    radial-gradient(circle at 58% 78%, rgba(127, 140, 255, 0.18), transparent 28rem),
    linear-gradient(90deg, rgba(5, 11, 29, 0.96), rgba(5, 11, 29, 0.68) 50%, rgba(5, 11, 29, 0.36)),
    linear-gradient(180deg, rgba(5, 11, 29, 0.06), rgba(5, 11, 29, 0.96));
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 148px 0 88px;
}

.hero-inner::before {
  display: inline-flex;
  width: min(100%, 760px);
  height: 1px;
  margin-bottom: 32px;
  background: linear-gradient(90deg, var(--cyan), rgba(57, 215, 255, 0));
  box-shadow: 0 0 22px rgba(57, 215, 255, 0.64);
  content: "";
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  color: var(--ice);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 980px;
  margin-bottom: 22px;
  font-size: clamp(54px, 8.6vw, 118px);
  line-height: 0.95;
  letter-spacing: 0;
  text-wrap: balance;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 4.8vw, 60px);
  line-height: 1.06;
  letter-spacing: 0;
  text-wrap: balance;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 780px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 23px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 54px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid rgba(184, 236, 255, 0.26);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 900;
  backdrop-filter: blur(18px) saturate(1.25);
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: rgba(184, 236, 255, 0.52);
  background: rgba(255, 255, 255, 0.13);
}

.button.primary {
  border-color: rgba(57, 215, 255, 0.72);
  background: linear-gradient(135deg, #ecfbff, #69dfff 45%, #2d8cff);
  color: #031021;
  box-shadow:
    0 18px 48px rgba(45, 140, 255, 0.32),
    0 0 38px rgba(57, 215, 255, 0.22);
}

.button.dark {
  color: #031021;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 184px));
  gap: 14px;
  max-width: 650px;
  margin: 0;
}

.hero-metrics div {
  min-height: 118px;
  padding: 18px;
  border: 1px solid rgba(184, 236, 255, 0.2);
  border-radius: 8px;
  background: rgba(12, 31, 66, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(20px) saturate(1.3);
}

.hero-metrics dt {
  font-size: 40px;
  line-height: 1;
  font-weight: 950;
  color: var(--ink);
}

.hero-metrics dd {
  margin: 9px 0 0;
  color: var(--soft);
  font-size: 13px;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.section-head {
  max-width: 850px;
  margin-bottom: 34px;
}

.power-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.power-grid article,
.trust-list,
.signal-board,
.cta {
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.055)),
    var(--glass);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(24px) saturate(1.35);
}

.power-grid article {
  position: relative;
  min-height: 260px;
  overflow: hidden;
  padding: 24px;
}

.power-grid article::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(57, 215, 255, 0.12), transparent 46%);
  pointer-events: none;
  content: "";
}

.power-grid article::after {
  position: absolute;
  right: -34px;
  bottom: -42px;
  width: 130px;
  height: 130px;
  border: 1px solid rgba(57, 215, 255, 0.24);
  border-radius: 999px;
  box-shadow: inset 0 0 34px rgba(45, 140, 255, 0.14);
  content: "";
}

.power-grid article > * {
  position: relative;
  z-index: 1;
}

.power-grid span {
  display: block;
  margin-bottom: 48px;
  color: var(--cyan);
  font-weight: 950;
}

.power-grid p,
.split p,
.impact-inner p,
.cta p,
.trust-list span,
.signal-board span {
  color: var(--muted);
}

.impact-band {
  padding: 98px max(20px, calc((100vw - 1180px) / 2));
  background:
    radial-gradient(circle at 82% 32%, rgba(57, 215, 255, 0.18), transparent 26rem),
    linear-gradient(135deg, rgba(9, 25, 57, 0.92), rgba(4, 11, 29, 0.92));
  color: var(--ink);
}

.impact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  gap: 46px;
  align-items: center;
}

.impact-inner p {
  max-width: 720px;
  margin-top: 20px;
  font-size: 18px;
}

.signal-board {
  display: grid;
  gap: 0;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(57, 215, 255, 0.16), rgba(255, 255, 255, 0.055)),
    rgba(9, 25, 57, 0.68);
}

.signal-board div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}

.signal-board div:last-child {
  border-bottom: 0;
}

.signal-board strong {
  color: var(--ink);
  font-size: 22px;
}

.signal-board span {
  color: var(--soft);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.78fr);
  gap: 44px;
  align-items: start;
}

.split p {
  max-width: 700px;
  margin-top: 22px;
  font-size: 18px;
}

.trust-list {
  display: grid;
  overflow: hidden;
}

.trust-list div {
  display: grid;
  gap: 5px;
  min-height: 86px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--line);
}

.trust-list div:last-child {
  border-bottom: 0;
}

.trust-list strong {
  font-size: 18px;
}

.cta {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 44px;
  background:
    radial-gradient(circle at 100% 0%, rgba(57, 215, 255, 0.18), transparent 24rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.065)),
    var(--glass-strong);
}

.cta h2 {
  font-size: clamp(30px, 3.8vw, 48px);
}

.cta p {
  max-width: 720px;
  margin: 16px 0 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 4vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--soft);
  background: rgba(5, 11, 29, 0.48);
  backdrop-filter: blur(18px);
}

@media (max-width: 980px) {
  .site-header {
    position: absolute;
    top: 14px;
  }

  .top-nav {
    display: none;
  }

  .hero {
    min-height: 880px;
  }

  .hero-shade {
    background:
      radial-gradient(circle at 72% 18%, rgba(57, 215, 255, 0.22), transparent 22rem),
      linear-gradient(180deg, rgba(5, 11, 29, 0.9), rgba(5, 11, 29, 0.64) 54%, rgba(5, 11, 29, 0.96));
  }

  .hero-metrics,
  .power-grid,
  .impact-inner,
  .split {
    grid-template-columns: 1fr;
  }

  .section,
  .impact-band {
    padding-top: 70px;
    padding-bottom: 70px;
  }

  .power-grid article {
    min-height: 190px;
  }

  .power-grid span {
    margin-bottom: 26px;
  }

  .cta,
  .site-footer {
    display: grid;
  }
}

@media (max-width: 560px) {
  .site-header,
  .hero-inner,
  .section,
  .cta {
    width: min(100% - 32px, 1180px);
  }

  .site-header {
    padding: 10px 12px;
  }

  .hero {
    min-height: 880px;
  }

  .hero-inner {
    padding-top: 116px;
    padding-bottom: 56px;
  }

  .hero-inner::before {
    margin-bottom: 24px;
  }

  h1 {
    font-size: clamp(40px, 13vw, 54px);
    line-height: 1.02;
  }

  h2 {
    font-size: clamp(30px, 10vw, 42px);
  }

  .button {
    width: 100%;
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-actions {
    margin-bottom: 42px;
  }

  .hero-metrics div {
    min-height: 108px;
  }

  .signal-board div {
    display: grid;
    min-height: 72px;
  }

  .cta {
    padding: 28px;
  }
}