@charset "UTF-8";

:root {
  --page: #07111d;
  --surface: #0c1928;
  --surface-2: #111f30;
  --ink: #f4f7fb;
  --muted: #9aa9ba;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #e33c45;
  --accent-2: #7ba7ff;
  --display: "Arial Narrow", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --body: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --max: 1240px;
  --radius: 4px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.shell {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: absolute;
  z-index: 30;
  top: 0;
  right: 0;
  left: 0;
  min-height: 82px;
  border-bottom: 1px solid var(--line);
}

.site-header.is-sticky {
  position: fixed;
  background: rgba(5, 13, 23, 0.9);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  animation: headerIn 0.28s ease;
}

@keyframes headerIn {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
}

.brand img {
  width: 190px;
  height: auto;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}

.site-nav--mobile {
  display: none;
}

.site-nav-list {
  display: flex;
  margin: 0;
  padding: 0;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.site-nav-list > li {
  margin: 0;
}

.site-nav a {
  position: relative;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.site-nav a:not(.nav-cta)::after {
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transition: width 0.2s ease;
}

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

.site-nav a:hover::after {
  width: 100%;
}

.nav-cta,
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-cta {
  min-height: 42px;
  padding-inline: 18px;
}

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

.button.ghost {
  border-color: rgba(255, 255, 255, 0.28);
  background: transparent;
}

.button.light {
  background: #fff;
  color: #081322;
}

.button svg,
.arrow {
  width: 18px;
  transition: transform 0.2s ease;
}

.button:hover .arrow {
  transform: translateX(4px);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: #fff;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 18px;
  height: 1px;
  background: currentColor;
  content: "";
  transition: 0.2s ease;
}

.menu-toggle span::before {
  transform: translateY(-6px);
}

.menu-toggle span::after {
  transform: translateY(5px);
}

.menu-open .menu-toggle span {
  background: transparent;
}

.menu-open .menu-toggle span::before {
  transform: rotate(45deg);
}

.menu-open .menu-toggle span::after {
  transform: translateY(-1px) rotate(-45deg);
}

.section {
  position: relative;
  padding: 120px 0;
  overflow: clip;
}

.section.compact {
  padding-block: 82px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(240px, 0.85fr) minmax(360px, 1.2fr);
  gap: 72px;
  align-items: end;
  margin-bottom: 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 30px;
  height: 1px;
  background: currentColor;
  content: "";
}

.section-title {
  max-width: 850px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(38px, 4vw, 68px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.section-copy {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.overline {
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

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

.grid-2,
.grid-3,
.grid-4,
.grid-5 {
  display: grid;
  gap: 22px;
}

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

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

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

.grid-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  background: var(--surface);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat {
  min-height: 152px;
  padding: 34px;
  border-right: 1px solid var(--line);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  margin-bottom: 12px;
  font-family: var(--display);
  font-size: clamp(38px, 4vw, 60px);
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.product-card {
  position: relative;
  min-height: 370px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.product-card img {
  height: 220px;
  object-fit: contain;
  background: #eef1f3;
  transition: transform 0.5s cubic-bezier(.2,.7,.2,1);
}

.product-card:hover img {
  transform: scale(1.04);
}

.product-card .card-body {
  padding: 24px;
}

.product-card h3 {
  margin: 6px 0 8px;
  font-size: 20px;
  line-height: 1.25;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.feature-media {
  position: relative;
  min-height: 560px;
  overflow: hidden;
}

.feature-media img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
}

.feature-panel {
  padding: 62px;
}

.feature-panel h2 {
  margin: 14px 0 24px;
  font-family: var(--display);
  font-size: clamp(40px, 4vw, 66px);
  line-height: 1;
}

.check-list {
  margin: 28px 0 36px;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  color: #dce4ee;
}

.check-list li::before {
  color: var(--accent-2);
  content: "↗";
}

.solution-card {
  position: relative;
  min-height: 280px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.solution-card .num {
  display: block;
  margin-bottom: 68px;
  color: var(--accent-2);
  font-size: 12px;
}

.solution-card h3 {
  max-width: 230px;
  margin: 0 0 12px;
  font-size: 21px;
}

.solution-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.project-card {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  background: #111;
}

.project-card img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(.2,.7,.2,1);
}

.project-card::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 35%, rgba(2, 7, 14, 0.94));
  content: "";
}

.project-card:hover img {
  transform: scale(1.04);
}

.project-caption {
  position: absolute;
  z-index: 2;
  right: 28px;
  bottom: 28px;
  left: 28px;
}

.project-caption h3 {
  margin: 6px 0 2px;
  font-size: 25px;
}

.project-caption p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.quality-list {
  display: grid;
  margin: 36px 0 0;
  padding: 0;
  grid-template-columns: repeat(3, 1fr);
  list-style: none;
}

.quality-list li {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-right: 0;
}

.quality-list li:last-child {
  border-right: 1px solid var(--line);
}

.quality-list strong {
  display: block;
  margin-bottom: 5px;
  color: #fff;
}

.quality-list span {
  color: var(--muted);
  font-size: 13px;
}

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

.cert-card {
  min-height: 150px;
  padding: 28px;
  border: 1px solid var(--line);
}

.cert-card strong {
  display: block;
  margin-bottom: 26px;
  font-size: 19px;
}

.cert-card span {
  color: var(--muted);
  font-size: 12px;
}

.article-card {
  min-height: 260px;
  padding: 30px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.article-card time {
  color: var(--accent-2);
  font-size: 12px;
}

.article-card h3 {
  margin: 54px 0 16px;
  font-size: 22px;
}

.article-card a {
  color: var(--muted);
  font-size: 13px;
}

.cta-panel {
  position: relative;
  min-height: 430px;
  padding: 74px;
  overflow: hidden;
  background: var(--accent);
  color: #fff;
}

.cta-panel::after {
  position: absolute;
  top: -34%;
  right: -8%;
  width: 560px;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(255,255,255,.04), 0 0 0 160px rgba(255,255,255,.03);
  content: "";
}

.cta-panel h2 {
  position: relative;
  z-index: 2;
  max-width: 820px;
  margin: 0 0 20px;
  font-family: var(--display);
  font-size: clamp(46px, 6vw, 84px);
  letter-spacing: -0.05em;
  line-height: 0.98;
}

.cta-panel p {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 0 34px;
  color: rgba(255, 255, 255, 0.78);
}

.cta-panel .button {
  position: relative;
  z-index: 2;
}

.site-footer {
  padding: 72px 0 34px;
  background: #030912;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 58px;
  border-bottom: 1px solid var(--line);
}

.footer-brand img {
  width: 210px;
  margin-bottom: 20px;
}

.footer-brand p {
  max-width: 360px;
  color: var(--muted);
}

.footer-col strong {
  display: block;
  margin-bottom: 18px;
  font-size: 13px;
}

.footer-col a,
.footer-col span {
  display: block;
  margin: 9px 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 28px;
  color: #657486;
  font-size: 12px;
}

.footer-menu {
  display: flex;
  margin: 0;
  padding: 0;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
  list-style: none;
}

.footer-menu a {
  color: var(--muted);
}

.footer-menu a:hover {
  color: #fff;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s cubic-bezier(.2,.7,.2,1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.prototype-note {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 7px 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

.prototype-note::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #f0b94d;
  content: "";
}

.toast {
  position: fixed;
  z-index: 90;
  right: 24px;
  bottom: 24px;
  max-width: 340px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
  color: #0c1725;
  font-size: 13px;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: .25s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .site-nav {
    gap: 14px;
  }

  .site-nav a:not(.nav-cta) {
    display: none;
  }

  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4,
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(calc(100% - 32px), var(--max));
  }

  .site-header,
  .nav-wrap {
    min-height: 68px;
  }

  .brand img {
    width: 154px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav--desktop {
    display: none;
  }

  .site-nav--mobile {
    position: fixed;
    inset: 68px 0 0;
    display: flex;
    padding: 34px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(3, 9, 18, 0.98);
    opacity: 0;
    pointer-events: none;
    transform: translateX(100%);
    transition: .25s ease;
  }

  .site-nav--mobile .site-nav-list {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .menu-open .site-nav--mobile {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
  }

  .site-nav--mobile a:not(.nav-cta) {
    display: block;
    padding: 14px 2px;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }

  .site-nav--mobile .nav-cta {
    margin-top: 24px;
  }

  .section {
    padding: 78px 0;
  }

  .section.compact {
    padding-block: 60px;
  }

  .section-head {
    display: block;
    margin-bottom: 34px;
  }

  .section-head .section-copy {
    margin-top: 24px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .cert-grid {
    grid-template-columns: 1fr;
  }

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

  .stat {
    min-height: 120px;
    padding: 24px 20px;
    border-bottom: 1px solid var(--line);
  }

  .stat:nth-child(2) {
    border-right: 0;
  }

  .feature-media {
    min-height: 380px;
  }

  .feature-panel {
    padding: 38px 24px;
  }

  .quality-list {
    grid-template-columns: 1fr;
  }

  .quality-list li,
  .quality-list li:last-child {
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .quality-list li:last-child {
    border-bottom: 1px solid var(--line);
  }

  .cta-panel {
    min-height: 390px;
    padding: 46px 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .footer-menu {
    justify-content: flex-start;
  }
}

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

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