:root {
  --blue: #065fd4;
  --blue-dark: #044ca8;
  --green: #16a34a;
  --green-dark: #0f8a3b;
  --red: #dc2626;
  --ink: #111827;
  --muted: #607089;
  --soft: #f8fafc;
  --line: #e2e8f0;
  --white: #ffffff;
  --heading: Poppins, Arial, Helvetica, sans-serif;
  --body: Arial, Helvetica, sans-serif;
  --shadow: 0 28px 80px rgba(15, 23, 42, .08);
  --shadow-soft: 0 18px 46px rgba(15, 23, 42, .06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background: #ffffff;
  overflow-x: hidden;
}

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

svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid rgba(226, 232, 240, .9);
  backdrop-filter: blur(16px);
}

.nav-shell {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--heading);
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -.03em;
}

.brand-mark {
  width: 35px;
  height: 35px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--green));
  font-family: var(--heading);
  font-weight: 600;
  box-shadow: 0 14px 32px rgba(6, 95, 212, .18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  color: #334155;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-link {
  font-size: 14px;
  color: #334155;
}

.btn {
  min-height: 44px;
  border-radius: 13px;
  padding: 12px 18px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--body);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

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

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--green));
  box-shadow: 0 16px 38px rgba(6, 95, 212, .18);
}

.btn-secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}

.btn-white {
  background: #fff;
  color: var(--blue);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, .34);
  color: #fff;
  background: rgba(255, 255, 255, .08);
}

.menu-btn {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  display: none;
  place-items: center;
  gap: 4px;
}

.menu-btn span,
.menu-btn::before,
.menu-btn::after {
  content: "";
  width: 18px;
  height: 2px;
  border-radius: 99px;
  background: var(--ink);
  display: block;
}

.hero {
  padding: 92px 0 92px;
  background:
    radial-gradient(circle at 10% 8%, rgba(22, 163, 74, .08), transparent 30%),
    radial-gradient(circle at 92% 0%, rgba(6, 95, 212, .10), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.hero-grid {
  display: block;
}

.hero-copy {
  max-width: 900px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #eef6ff;
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: var(--green);
}

.eyebrow.light {
  background: rgba(255, 255, 255, .12);
  color: #fff;
}

.hero h1,
.section-head h2,
.operation-copy h2,
.pricing-copy h2,
.cta-box h2 {
  font-family: var(--heading);
  font-weight: 500;
  letter-spacing: -.045em;
}

.hero h1 {
  max-width: 880px;
  font-size: clamp(52px, 6vw, 88px);
  line-height: 1.02;
  margin: 0;
}

.text-green {
  color: var(--green-dark);
}

.hero-copy p {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.72;
  max-width: 680px;
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 24px;
  color: #475569;
  font-size: 14px;
}

.hero-visual {
  display: none;
}

.section {
  padding: 92px 0;
}

.section-soft {
  background: #f8fafc;
}

.section-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 44px;
}

.section-head h2,
.operation-copy h2,
.pricing-copy h2 {
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.08;
  margin: 0;
}

.section-head p,
.operation-copy p,
.pricing-copy p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
  margin: 18px 0 0;
}

.feature-slider {
  overflow: hidden;
  padding: 8px 0 16px;
}

.feature-track {
  display: flex;
  gap: 18px;
  width: max-content;
  animation: featureMove 42s linear infinite;
}

.feature-slider:hover .feature-track {
  animation-play-state: paused;
}

.feature-card {
  flex: 0 0 390px;
  min-height: 188px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--shadow-soft);
}

.feature-card h3,
.operation-flow h3,
.hardware-card h3,
.footer h4,
.price-top h3 {
  font-family: var(--heading);
  font-weight: 500;
  margin: 0;
}

.feature-card h3 {
  font-size: 19px;
}

.feature-card p,
.operation-flow p,
.hardware-card p,
.footer p,
.footer a,
.price-note,
.price-grid div {
  color: var(--muted);
  line-height: 1.62;
  margin: 9px 0 0;
  font-size: 15px;
}

.icon,
.device-icon {
  min-width: 48px;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  display: grid;
  place-items: center;
}

.icon-blue {
  color: var(--blue);
  background: #eef6ff;
}

.icon-green {
  color: var(--green-dark);
  background: #eefaf2;
}

.icon-red {
  color: var(--red);
  background: #fff1f2;
}

@keyframes featureMove {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.operation-panel {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 54px;
  align-items: start;
  padding: 44px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    radial-gradient(circle at 0% 0%, rgba(6, 95, 212, .06), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  box-shadow: var(--shadow);
}

.operation-copy {
  position: sticky;
  top: 110px;
}

.operation-flow {
  display: grid;
  gap: 16px;
  position: relative;
}

.operation-flow article {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
}

.operation-flow strong {
  width: 48px;
  height: 48px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff;
  font-weight: 600;
  font-size: 13px;
}

.operation-flow h3 {
  font-size: 21px;
}

.hardware-slider {
  overflow: hidden;
  border-radius: 28px;
  padding: 8px 0;
}

.hardware-track {
  display: flex;
  width: max-content;
  gap: 18px;
  animation: hardwareMove 28s linear infinite;
}

.hardware-slider:hover .hardware-track {
  animation-play-state: paused;
}

.hardware-card {
  width: 250px;
  min-height: 210px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.device-icon {
  color: var(--blue);
  background: #eef6ff;
  margin-bottom: 18px;
}

@keyframes hardwareMove {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.pricing-panel {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 48px;
  align-items: center;
}

.pricing-card {
  background:
    radial-gradient(circle at 96% 0%, rgba(22, 163, 74, .10), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  border: 1px solid var(--line);
  border-radius: 34px;
  padding: 36px;
  box-shadow: var(--shadow);
}

.price-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.price-top span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 8px;
}

.price-top h3 {
  font-size: 24px;
}

.price-badge {
  padding: 8px 12px;
  border-radius: 999px;
  background: #eef6ff;
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
}

.price-main {
  margin-top: 26px;
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.price-main strong {
  display: block;
  font-family: var(--heading);
  font-size: clamp(64px, 8vw, 96px);
  line-height: .92;
  font-weight: 500;
  letter-spacing: -.055em;
}

.price-main span {
  color: var(--muted);
  font-size: 20px;
  padding-bottom: 10px;
}

.price-note {
  margin-top: 20px;
  max-width: 520px;
}

.price-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 18px;
}

.price-grid div {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: #334155;
}

.price-grid i {
  width: 9px;
  height: 9px;
  min-width: 9px;
  border-radius: 99px;
  background: var(--green);
}

.price-actions {
  margin-top: 30px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.section-cta {
  padding: 76px 0;
}

.cta-box {
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 255, 255, .18), transparent 30%),
    linear-gradient(135deg, var(--blue-dark), var(--green-dark));
  color: #fff;
  border-radius: 34px;
  padding: 48px;
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: center;
}

.cta-box h2 {
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.08;
  margin: 0;
}

.cta-box p {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, .82);
  font-size: 18px;
  line-height: 1.65;
  max-width: 640px;
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer {
  background: #071827;
  color: #fff;
  padding: 58px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 36px;
}

.footer-brand {
  color: #fff;
}

.footer h4 {
  color: #fff;
  margin-bottom: 14px;
}

.footer a {
  display: block;
  margin: 9px 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  margin-top: 36px;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: #94a3b8;
  font-size: 13px;
  flex-wrap: wrap;
}

@media (max-width: 980px) {
  .nav-links {
    position: fixed;
    top: 74px;
    left: 20px;
    right: 20px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
    padding: 18px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  body.menu-open .nav-links {
    display: flex;
  }

  .menu-btn {
    display: grid;
  }

  .login-link {
    display: none;
  }

  .hero-copy {
    text-align: center;
    margin: 0 auto;
  }

  .hero-copy p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .operation-panel,
  .pricing-panel {
    grid-template-columns: 1fr;
  }

  .operation-copy {
    position: static;
    text-align: center;
  }

  .pricing-copy {
    text-align: center;
  }

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

  .cta-box {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .nav-shell {
    min-height: 68px;
  }

  .brand {
    font-size: 21px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .hero {
    padding: 46px 0 48px;
  }

  .hero h1 {
    font-size: clamp(42px, 13vw, 58px);
    line-height: 1;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-copy p {
    font-size: 16px;
    line-height: 1.62;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .section {
    padding: 68px 0;
  }

  .section-head {
    text-align: left;
  }

  .feature-card {
    flex-basis: 286px;
    min-height: 220px;
    display: block;
  }

  .icon {
    margin-bottom: 16px;
  }

  .operation-panel {
    padding: 22px;
    border-radius: 28px;
  }

  .operation-copy {
    text-align: left;
  }

  .operation-flow article {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .hardware-card {
    width: 230px;
  }

  .pricing-copy {
    text-align: left;
  }

  .pricing-card {
    padding: 26px;
    border-radius: 28px;
  }

  .price-top {
    display: grid;
  }

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

  .price-actions {
    display: grid;
  }

  .price-actions .btn {
    width: 100%;
  }

  .cta-box {
    padding: 30px 24px;
    border-radius: 26px;
  }

  .cta-actions {
    display: grid;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }

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