:root {
  --bg: #f5f8fd;
  --surface: rgba(255, 255, 255, 0.76);
  --surface-strong: #ffffff;
  --ink: #0f1d32;
  --muted: #6f7d93;
  --line: rgba(15, 29, 50, 0.08);
  --primary: #0d5eff;
  --primary-deep: #093a9d;
  --accent: #0fe3bf;
  --shadow: 0 24px 70px rgba(13, 36, 82, 0.12);
  --radius: 24px;
  --radius-sm: 18px;
  --container: min(1180px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(13, 94, 255, 0.16), transparent 24%),
    radial-gradient(circle at 80% 20%, rgba(15, 227, 191, 0.18), transparent 24%),
    linear-gradient(180deg, #eff4fb 0%, #ffffff 22%, #edf4ff 100%);
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
  line-height: 1.6;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.page-shell {
  position: relative;
  overflow: clip;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.top-strip {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(90deg, #08111f 0%, #133774 100%);
  color: rgba(255, 255, 255, 0.78);
}

.top-strip__inner,
.site-header__inner,
.hero__grid,
.about,
.brands,
.contact,
.site-footer__grid,
.site-footer__bottom {
  display: flex;
  align-items: center;
}

.top-strip__inner {
  justify-content: space-between;
  min-height: 42px;
  gap: 24px;
  font-size: 13px;
}

.top-strip__meta,
.top-strip__links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(245, 248, 253, 0.72);
  border-bottom: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(248, 250, 255, 0.92);
  border-color: var(--line);
  box-shadow: 0 10px 30px rgba(6, 22, 56, 0.08);
}

.site-header__inner {
  justify-content: space-between;
  min-height: 82px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 44px;
  height: 44px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  letter-spacing: 0.04em;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
  font-weight: 500;
}

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

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--primary);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.header-cta,
.button--primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary) 0%, #2c7cff 50%, #19b7ff 100%);
  box-shadow: 0 20px 40px rgba(13, 94, 255, 0.28);
}

.button--ghost {
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

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

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

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 6px auto;
  background: var(--ink);
  border-radius: 999px;
}

.hero {
  position: relative;
  color: #ffffff;
  background:
    linear-gradient(125deg, rgba(8, 17, 31, 0.92) 12%, rgba(13, 37, 88, 0.94) 48%, rgba(7, 69, 144, 0.92) 100%);
}

.hero__backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 15% 15%, rgba(15, 227, 191, 0.28), transparent 16%),
    radial-gradient(circle at 80% 35%, rgba(71, 145, 255, 0.32), transparent 18%);
  background-size: 72px 72px, 72px 72px, auto, auto;
  opacity: 0.6;
}

.hero__grid {
  position: relative;
  padding: 108px 0 92px;
  justify-content: space-between;
  align-items: stretch;
  gap: 40px;
}

.hero__content,
.hero__panel {
  position: relative;
  z-index: 1;
}

.hero__content {
  flex: 1 1 56%;
  max-width: 630px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.08);
}

.hero h1,
.section-heading h2 {
  margin: 18px 0 0;
  line-height: 1.12;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  max-width: 10.5em;
}

.hero p {
  max-width: 610px;
  margin: 22px 0 0;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.78);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.hero__stats article,
.hero-card,
.product-card,
.application-card,
.news-card,
.about__panel,
.about__badge,
.contact__form,
.contact__info {
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero__stats article {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
}

.hero__stats strong {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.hero__stats span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.76);
}

.hero__panel {
  flex: 1 1 40%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 320px;
}

.hero-card {
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.06));
}

.hero-card p,
.hero-card span,
.hero-card small,
.hero-card li {
  color: rgba(255, 255, 255, 0.76);
}

.hero-card h2 {
  margin: 10px 0 20px;
  font-size: 30px;
  line-height: 1.2;
}

.hero-card ul {
  padding-left: 18px;
  margin: 0;
}

.hero-card li + li {
  margin-top: 10px;
}

.hero-card--split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-card--split article {
  padding: 20px;
  border-radius: 20px;
  background: rgba(5, 14, 32, 0.34);
}

.hero-card--split strong {
  display: block;
  margin-top: 8px;
  font-size: 18px;
}

.section {
  position: relative;
  padding: 108px 0;
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-heading--left {
  margin: 0 0 28px;
  text-align: left;
}

.section-heading .eyebrow {
  color: var(--primary-deep);
  border-color: rgba(13, 94, 255, 0.12);
  background: rgba(13, 94, 255, 0.08);
}

.section-heading h2 {
  font-size: clamp(32px, 4vw, 52px);
}

.section-heading p {
  margin: 18px 0 0;
  font-size: 17px;
  color: var(--muted);
}

.section--products {
  padding-top: 86px;
}

.product-grid,
.application-grid,
.news-grid {
  display: grid;
  gap: 20px;
}

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

.product-card {
  min-height: 220px;
  padding: 28px;
  border: 1px solid rgba(12, 35, 79, 0.08);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(13, 94, 255, 0.05), rgba(15, 227, 191, 0.06)),
    var(--surface-strong);
}

.product-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  color: var(--primary);
  font-weight: 700;
  background: rgba(13, 94, 255, 0.08);
}

.product-card h3,
.application-card h3,
.news-card h3,
.site-footer h3 {
  margin: 18px 0 10px;
}

.product-card p,
.application-card p,
.news-card p,
.contact__info p,
.site-footer__desc {
  margin: 0;
  color: var(--muted);
}

.about {
  gap: 40px;
  align-items: stretch;
}

.about__visual,
.about__content {
  flex: 1 1 50%;
}

.about__visual {
  position: relative;
  min-height: 460px;
  border-radius: 36px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(13, 94, 255, 0.96), rgba(7, 45, 110, 0.98)),
    linear-gradient(180deg, #0b1a35, #133774);
  padding: 34px;
}

.about__visual::before,
.about__visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(2px);
}

.about__visual::before {
  width: 240px;
  height: 240px;
  right: -60px;
  top: 30px;
  background: rgba(15, 227, 191, 0.24);
}

.about__visual::after {
  width: 320px;
  height: 320px;
  left: -120px;
  bottom: -90px;
  background: rgba(255, 255, 255, 0.12);
}

.about__panel,
.about__badge {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.about__panel {
  max-width: 360px;
  padding: 28px;
}

.about__panel p,
.about__badge span {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about__panel strong,
.about__badge strong {
  display: block;
  margin-top: 12px;
  font-size: 26px;
  line-height: 1.2;
}

.about__panel small {
  display: block;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.7;
}

.about__badge {
  position: absolute;
  right: 34px;
  bottom: 34px;
  max-width: 270px;
  padding: 22px;
}

.about__content {
  padding-top: 18px;
}

.about__content p + p {
  margin-top: 18px;
}

.about__points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.about__points div {
  padding: 20px;
  border-radius: 22px;
  border: 1px solid rgba(12, 35, 79, 0.08);
  background: rgba(255, 255, 255, 0.82);
}

.about__points strong,
.application-card h3,
.news-card__type,
.contact-list strong {
  display: block;
}

.about__points span,
.contact-list span {
  color: var(--muted);
}

.section--applications {
  background:
    linear-gradient(180deg, rgba(9, 26, 53, 0.02), rgba(9, 26, 53, 0.06)),
    linear-gradient(180deg, transparent, rgba(13, 94, 255, 0.04));
}

.application-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.application-card {
  min-height: 190px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(12, 35, 79, 0.08);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(241, 247, 255, 0.82)),
    var(--surface-strong);
}

.application-card:nth-child(4n + 1) {
  background:
    linear-gradient(135deg, rgba(15, 227, 191, 0.14), rgba(255, 255, 255, 0.96)),
    var(--surface-strong);
}

.application-card:nth-child(4n + 2) {
  background:
    linear-gradient(135deg, rgba(13, 94, 255, 0.14), rgba(255, 255, 255, 0.96)),
    var(--surface-strong);
}

.application-card:nth-child(4n + 3) {
  background:
    linear-gradient(135deg, rgba(5, 22, 58, 0.1), rgba(255, 255, 255, 0.96)),
    var(--surface-strong);
}

.application-card:nth-child(4n + 4) {
  background:
    linear-gradient(135deg, rgba(50, 103, 255, 0.08), rgba(15, 227, 191, 0.12)),
    var(--surface-strong);
}

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

.news-card {
  padding: 30px;
  border-radius: var(--radius);
  border: 1px solid rgba(12, 35, 79, 0.08);
  background: rgba(255, 255, 255, 0.88);
}

.news-card__type {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
}

.news-card time {
  display: inline-flex;
  margin-top: 22px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(13, 94, 255, 0.08);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 600;
}

.brands {
  align-items: end;
  justify-content: space-between;
  gap: 36px;
}

.brand-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
  max-width: 560px;
}

.brand-cloud span {
  display: inline-flex;
  align-items: center;
  min-height: 54px;
  padding: 0 20px;
  border: 1px solid rgba(12, 35, 79, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  color: #1c2f52;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.section--contact {
  padding-bottom: 126px;
}

.contact {
  align-items: stretch;
  gap: 22px;
}

.contact__info,
.contact__form {
  flex: 1 1 50%;
  padding: 34px;
  border: 1px solid rgba(12, 35, 79, 0.08);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.86);
}

.contact-list {
  display: grid;
  gap: 18px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.contact-list li {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.contact__form {
  display: grid;
  gap: 18px;
}

.contact__form label {
  display: grid;
  gap: 8px;
}

.contact__form span {
  font-size: 14px;
  font-weight: 600;
}

.contact__form input,
.contact__form select,
.contact__form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(12, 35, 79, 0.12);
  border-radius: 16px;
  background: rgba(248, 251, 255, 0.9);
  color: var(--ink);
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.contact__form input:focus,
.contact__form select:focus,
.contact__form textarea:focus {
  border-color: rgba(13, 94, 255, 0.42);
  box-shadow: 0 0 0 4px rgba(13, 94, 255, 0.1);
}

.contact__form textarea {
  resize: vertical;
  min-height: 140px;
}

.site-footer {
  color: rgba(255, 255, 255, 0.86);
  background: linear-gradient(125deg, #071120 0%, #0c2248 100%);
}

.site-footer__grid {
  align-items: start;
  justify-content: space-between;
  gap: 24px;
  padding: 54px 0 34px;
}

.site-footer__grid > div {
  display: grid;
  gap: 10px;
  max-width: 280px;
}

.brand--footer small,
.site-footer a,
.site-footer span,
.site-footer__desc {
  color: rgba(255, 255, 255, 0.68);
}

.site-footer__bottom {
  justify-content: space-between;
  gap: 16px;
  min-height: 66px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
}

.floating-contact {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 32;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.floating-contact a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(12, 35, 79, 0.08);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 30px rgba(12, 35, 79, 0.12);
  font-size: 14px;
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

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

@media (max-width: 1120px) {
  .hero__grid,
  .about,
  .brands,
  .contact {
    flex-direction: column;
  }

  .hero__content,
  .hero__panel,
  .about__visual,
  .about__content,
  .contact__info,
  .contact__form {
    max-width: none;
    width: 100%;
  }

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

@media (max-width: 920px) {
  .menu-toggle {
    display: block;
  }

  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-nav {
    display: none;
    width: 100%;
    order: 4;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 14px 0 6px;
  }

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

  .header-cta {
    margin-left: auto;
  }

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

  .brand-cloud {
    justify-content: flex-start;
    max-width: none;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(calc(100vw - 24px), 100%);
  }

  .top-strip {
    display: none;
  }

  .site-header__inner {
    min-height: 72px;
  }

  .header-cta {
    display: none;
  }

  .hero__grid,
  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .hero__stats,
  .hero-card--split,
  .product-grid,
  .application-grid,
  .news-grid,
  .about__points,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .hero-card,
  .product-card,
  .application-card,
  .news-card,
  .contact__info,
  .contact__form,
  .about__panel,
  .about__badge {
    padding: 22px;
  }

  .about__visual {
    min-height: 380px;
    padding: 22px;
  }

  .about__badge {
    left: 22px;
    right: 22px;
    bottom: 22px;
    max-width: none;
  }

  .contact-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .floating-contact {
    right: 12px;
    left: 12px;
    bottom: 12px;
    flex-direction: row;
  }

  .floating-contact a {
    flex: 1 1 50%;
  }
}