:root {
  color-scheme: light;
  --ink: #101114;
  --muted: #60646d;
  --line: #e3e5e9;
  --surface: #f6f7f8;
  --surface-strong: #eef0f2;
  --white: #ffffff;
  --red: #e31b2b;
  --red-dark: #c91423;
  --green: #21a366;
  --max-width: 1360px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(16, 17, 20, 0.08);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}

.nav-shell,
.section-shell {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.nav-shell {
  height: 68px;
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  font-size: 20px;
  font-weight: 800;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  object-fit: cover;
}

.desktop-nav {
  display: flex;
  justify-content: center;
  gap: 44px;
  font-size: 14px;
}

.desktop-nav a,
.login-link,
.icon-link {
  color: #34373d;
  transition: color 160ms ease;
}

.desktop-nav a:hover,
.login-link:hover,
.icon-link:hover {
  color: var(--red);
}

.nav-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 20px;
  font-size: 14px;
}

.icon-link {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  font-size: 20px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-small {
  min-height: 40px;
  padding: 0 18px;
  font-size: 14px;
}

.button-primary {
  color: var(--white);
  background: var(--red);
  box-shadow: 0 8px 22px rgba(227, 27, 43, 0.18);
}

.button-primary:hover {
  background: var(--red-dark);
}

.button-secondary {
  color: #25282d;
  border-color: #cfd2d8;
  background: var(--white);
}

.button-secondary:hover {
  border-color: #9398a2;
}

.menu-button,
.mobile-nav {
  display: none;
}

.hero {
  min-height: calc(100vh - 68px);
  padding: clamp(34px, 5vh, 62px) 24px 54px;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 31%, rgba(227, 27, 43, 0.035), transparent 28%),
    linear-gradient(180deg, #fff, #fbfbfc);
}

.hero-copy {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero h1 {
  margin: 0;
  font-size: clamp(62px, 7vw, 106px);
  font-weight: 800;
  line-height: 0.96;
}

.hero-copy > p:first-of-type {
  margin: 20px 0 0;
  color: #4f535a;
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 28px;
}

.play-icon {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 9px solid currentColor;
}

.screen-icon {
  position: relative;
  width: 18px;
  height: 13px;
  border: 2px solid currentColor;
  border-radius: 2px;
}

.screen-icon::after {
  position: absolute;
  bottom: -6px;
  left: 4px;
  width: 7px;
  height: 2px;
  content: "";
  background: currentColor;
}

.download-status {
  min-height: 18px;
  margin: 12px 0 0;
  color: #8a8f98;
  font-size: 12px;
}

.product-shot {
  width: min(92vw, 1420px);
  margin-top: 14px;
  overflow: hidden;
  border: 1px solid #d8dbe0;
  border-radius: 8px;
  background: #101319;
  box-shadow:
    0 28px 60px rgba(20, 23, 29, 0.16),
    0 3px 8px rgba(20, 23, 29, 0.12);
}

.product-shot img {
  display: block;
  width: 100%;
  height: auto;
}

.workflow-band {
  padding: 92px 0 100px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 52px;
}

.section-heading > span,
.eyebrow {
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
}

.section-heading h2,
.pricing-layout h2,
.resource-grid h2 {
  margin: 12px 0 16px;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.14;
}

.section-heading p,
.pricing-layout p,
.resource-grid p,
.resource-grid li {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid #cfd2d7;
}

.feature {
  min-height: 230px;
  padding: 30px 40px 0 0;
}

.feature + .feature {
  padding-left: 40px;
  border-left: 1px solid #cfd2d7;
}

.feature-number {
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
}

.feature h3 {
  margin: 44px 0 12px;
  font-size: 24px;
}

.feature p {
  max-width: 350px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.pricing-section {
  padding: 86px 0;
  color: var(--white);
  background: #141519;
}

.pricing-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.pricing-layout > div {
  max-width: 760px;
}

.pricing-layout p {
  margin-bottom: 0;
  color: #b8bbc3;
}

.resource-section {
  padding: 100px 0;
}

.resource-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 100px;
}

.resource-grid article,
.resource-grid aside {
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.resource-grid ol {
  margin: 28px 0;
  padding-left: 22px;
}

.resource-grid li {
  padding: 7px 0;
}

.text-link {
  display: inline-flex;
  gap: 8px;
  color: var(--red);
  font-weight: 700;
}

.contact-line {
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-line span {
  color: var(--muted);
}

.contact-line strong {
  font-size: 20px;
}

footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  color: var(--muted);
  font-size: 13px;
}

.footer-brand {
  color: var(--ink);
  font-size: 16px;
}

.footer-brand img {
  width: 26px;
  height: 26px;
}

@media (max-width: 980px) {
  .nav-shell {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav,
  .login-link,
  .icon-link {
    display: none;
  }

  .nav-actions {
    gap: 10px;
  }

  .menu-button {
    width: 40px;
    height: 40px;
    display: grid;
    place-content: center;
    gap: 4px;
    border: 0;
    background: transparent;
  }

  .menu-button span {
    width: 18px;
    height: 2px;
    display: block;
    background: var(--ink);
  }

  .mobile-nav {
    padding: 8px 24px 22px;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    border-top: 1px solid var(--line);
    background: var(--white);
  }

  .mobile-nav.is-open {
    display: grid;
  }

  .mobile-nav a {
    padding: 12px 0;
    color: #42464d;
    font-size: 14px;
  }

  .hero {
    min-height: auto;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature {
    min-height: auto;
    padding: 28px 0;
  }

  .feature + .feature {
    padding-left: 0;
    border-top: 1px solid #cfd2d7;
    border-left: 0;
  }

  .feature h3 {
    margin-top: 20px;
  }

  .pricing-layout,
  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
  }

  .resource-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
}

@media (max-width: 620px) {
  .nav-shell,
  .section-shell {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .nav-shell {
    height: 62px;
  }

  .brand {
    gap: 8px;
    font-size: 17px;
  }

  .brand img {
    width: 26px;
    height: 26px;
  }

  .nav-actions .button-small {
    min-height: 36px;
    padding: 0 12px;
  }

  .hero {
    padding: 40px 16px 52px;
  }

  .hero h1 {
    font-size: 58px;
  }

  .hero-copy > p:first-of-type {
    font-size: 18px;
  }

  .hero-actions {
    width: 100%;
    gap: 10px;
  }

  .hero-actions .button {
    min-width: 0;
    flex: 1;
    padding: 0 12px;
  }

  .product-shot {
    width: 100%;
    margin-top: 24px;
  }

  .workflow-band,
  .resource-section {
    padding: 70px 0;
  }

  .pricing-section {
    padding: 66px 0;
  }

  .section-heading {
    margin-bottom: 34px;
  }

  .section-heading h2,
  .pricing-layout h2,
  .resource-grid h2 {
    font-size: 34px;
  }
}