:root {
  color-scheme: dark light;
  --ink: #f7fbff;
  --muted: rgba(247, 251, 255, 0.72);
  --dark: #05070b;
  --dark-2: #0b111a;
  --line: rgba(255, 255, 255, 0.14);
  --blue: #0a84ff;
  --cyan: #4bd4ff;
  --gold: #f2b84b;
  --paper: #f5f7fb;
  --paper-ink: #111827;
  --paper-muted: #5d6678;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: var(--dark);
  color: var(--ink);
  letter-spacing: 0;
}

body::selection {
  background: rgba(75, 212, 255, 0.32);
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.92);
  background: rgba(5, 7, 11, 0.22);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(22px);
  transition: background 260ms ease, border-color 260ms ease;
}

.site-header.is-scrolled {
  background: rgba(5, 7, 11, 0.78);
  border-color: rgba(255, 255, 255, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #061120;
  background: linear-gradient(135deg, #ffffff, #6de2ff 48%, #ffcf63);
  font-weight: 900;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.8vw, 34px);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.76);
}

.site-nav a {
  transition: color 180ms ease;
}

.site-nav a:hover {
  color: #fff;
}

.panel {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  align-items: center;
}

.hero {
  min-height: calc(100svh - 34px);
}

.panel-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.035);
}

.panel-shade {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 34%, rgba(39, 163, 255, 0.1), transparent 34%),
    linear-gradient(180deg, rgba(5, 7, 11, 0.46), rgba(5, 7, 11, 0.86));
}

.panel-shade.stronger {
  background: linear-gradient(180deg, rgba(5, 7, 11, 0.62), rgba(5, 7, 11, 0.94));
}

.hero-content,
.panel-copy,
.closing-content {
  position: relative;
  z-index: 2;
  width: min(92vw, var(--max));
  margin: 0 auto;
}

.hero-content {
  padding-top: 8vh;
  text-align: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan);
  font-size: clamp(12px, 1.4vw, 15px);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(74px, 15vw, 188px);
  line-height: 0.9;
  font-weight: 800;
  letter-spacing: 0;
  text-shadow: 0 20px 80px rgba(0, 0, 0, 0.5);
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(38px, 7vw, 92px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.2;
}

.hero-subtitle {
  width: min(720px, 92vw);
  margin: 0 auto 30px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.35;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: #fff;
  color: #07101d;
}

.button-ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 3;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.64);
  font-size: 12px;
}

.section-light,
.section-dark {
  padding: clamp(84px, 12vw, 156px) clamp(18px, 4vw, 56px);
}

.section-light {
  color: var(--paper-ink);
  background:
    linear-gradient(180deg, #ffffff, var(--paper));
}

.section-dark {
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(10, 132, 255, 0.22), transparent 26%),
    linear-gradient(180deg, #07101a, #05070b 72%);
}

.section-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.lead {
  width: min(920px, 100%);
  color: var(--paper-muted);
  font-size: clamp(19px, 2.2vw, 28px);
  line-height: 1.55;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 52px;
}

.metrics article,
.capability {
  border: 1px solid rgba(16, 24, 40, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 22px 70px rgba(15, 23, 42, 0.08);
}

.metrics article {
  padding: 30px;
}

.metrics span {
  display: block;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: clamp(44px, 5.4vw, 72px);
  line-height: 0.9;
  font-weight: 800;
}

.metrics p {
  margin: 0;
  color: var(--paper-muted);
  font-size: 16px;
  line-height: 1.55;
}

.split-panel .panel-shade {
  background: linear-gradient(90deg, rgba(5, 7, 11, 0.88) 0%, rgba(5, 7, 11, 0.44) 52%, rgba(5, 7, 11, 0.86) 100%);
}

.panel-copy {
  max-width: 690px;
  margin-left: max(4vw, calc((100vw - var(--max)) / 2));
  padding: 90px 0;
}

.panel-copy p:not(.eyebrow),
.closing-content p {
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.55;
}

.capabilities .section-heading {
  width: min(760px, 100%);
  margin-bottom: 46px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.capability {
  min-height: 268px;
  padding: 26px;
  color: #fff;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.045));
  border-color: var(--line);
  box-shadow: none;
  backdrop-filter: blur(18px);
}

.capability span {
  display: block;
  margin-bottom: 54px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
}

.capability p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
}

.logistics .panel-shade {
  background: linear-gradient(180deg, rgba(5, 7, 11, 0.12), rgba(5, 7, 11, 0.86) 74%, #05070b);
}

.panel-copy-bottom {
  align-self: end;
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
  padding: 0 0 11vh;
}

.technology {
  padding-left: clamp(18px, 4vw, 56px);
  padding-right: clamp(18px, 4vw, 56px);
}

.feature-layout {
  width: min(100%, 1280px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(28px, 5vw, 74px);
  align-items: center;
}

.feature-copy p:not(.eyebrow) {
  color: var(--paper-muted);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.62;
}

.feature-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.feature-list li {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 0 16px;
  border-radius: 8px;
  color: #1f2a3d;
  background: #fff;
  border: 1px solid rgba(17, 24, 39, 0.08);
}

.feature-image {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 32px 80px rgba(15, 23, 42, 0.16);
}

.feature-image img {
  width: 100%;
  aspect-ratio: 1.72 / 1;
  object-fit: cover;
}

.product-band {
  padding-top: clamp(72px, 10vw, 128px);
  padding-bottom: clamp(72px, 10vw, 128px);
}

.product-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.product-row span {
  min-height: 112px;
  display: grid;
  place-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 800;
  text-align: center;
}

.closing {
  min-height: 86svh;
  text-align: center;
}

.closing-content {
  max-width: 920px;
}

.closing-content .button {
  margin-top: 12px;
}

.site-footer {
  min-height: 118px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.68);
  background: #05070b;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer strong {
  color: #fff;
}

.site-footer p {
  margin: 8px 0 0;
}

.site-footer a {
  color: #fff;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 760ms ease, transform 760ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .metrics,
  .capability-grid,
  .product-row,
  .feature-layout {
    grid-template-columns: 1fr 1fr;
  }

  .panel-copy {
    margin: 0 auto;
    width: min(92vw, 720px);
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 52px;
    padding: 0 16px;
  }

  .site-nav {
    display: none;
  }

  .brand {
    font-size: 14px;
  }

  .panel {
    min-height: 92svh;
  }

  .hero {
    min-height: calc(100svh - 40px);
  }

  .hero-content {
    padding-top: 3vh;
  }

  h1 {
    font-size: clamp(64px, 22vw, 104px);
  }

  h2 {
    font-size: clamp(34px, 11vw, 56px);
  }

  .hero-subtitle {
    font-size: 21px;
  }

  .section-light,
  .section-dark {
    padding: 72px 18px;
  }

  .metrics,
  .capability-grid,
  .product-row,
  .feature-layout {
    grid-template-columns: 1fr;
  }

  .metrics article {
    padding: 24px;
  }

  .split-panel .panel-shade {
    background: linear-gradient(180deg, rgba(5, 7, 11, 0.18), rgba(5, 7, 11, 0.9));
  }

  .panel-copy {
    align-self: end;
    padding: 0 0 10vh;
  }

  .panel-copy-bottom {
    text-align: left;
  }

  .capability {
    min-height: auto;
  }

  .capability span {
    margin-bottom: 32px;
  }

  .feature-list li {
    align-items: flex-start;
    min-height: 0;
    padding: 12px 14px;
    line-height: 1.45;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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