:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --paper: #f5f5f7;
  --white: #ffffff;
  --blue: #0071e3;
  --blue-deep: #005bb5;
  --ring: rgba(0, 113, 227, 0.18);
  --card-radius: 34px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, "PingFang HK", "Microsoft JhengHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 52px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(250, 250, 252, 0.82);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #424245;
  font-size: 13px;
}

.nav-links a:hover,
.text-link:hover,
.site-footer a:hover {
  color: var(--blue);
}

.hero {
  min-height: calc(100vh - 52px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: 38px;
  align-items: center;
  padding: 64px clamp(22px, 6vw, 96px);
  overflow: hidden;
}

.section-dark {
  color: #f5f5f7;
  background:
    radial-gradient(circle at 86% 20%, rgba(0, 113, 227, 0.42), transparent 34%),
    radial-gradient(circle at 18% 80%, rgba(110, 88, 255, 0.28), transparent 30%),
    linear-gradient(135deg, #050506 0%, #111827 58%, #020617 100%);
}

.hero-copy {
  max-width: 690px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-dark .eyebrow,
.dark-card .eyebrow {
  color: #8ec5ff;
}

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

h1 {
  margin-bottom: 22px;
  max-width: 760px;
  font-size: clamp(48px, 7vw, 92px);
  line-height: 0.96;
  letter-spacing: -0.065em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 650px;
  color: rgba(245, 245, 247, 0.82);
  font-size: clamp(19px, 2.3vw, 27px);
  line-height: 1.38;
  letter-spacing: -0.02em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 23px;
  border-radius: 999px;
  font-size: 17px;
  font-weight: 600;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

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

.button-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 30px rgba(0, 113, 227, 0.32);
}

.button-primary:hover {
  background: var(--blue-deep);
}

.button-secondary {
  color: #f5f5f7;
  border: 1px solid rgba(245, 245, 247, 0.52);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  border-radius: 44px;
  overflow: hidden;
  background: #111;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.38);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 44%, rgba(0, 0, 0, 0.28) 100%);
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
}

.image-ai-note {
  position: absolute;
  right: 18px;
  bottom: 14px;
  z-index: 1;
  margin: 0;
  padding: 6px 10px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(10px);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.statement {
  max-width: 1120px;
  margin: 0 auto;
  padding: 110px clamp(22px, 6vw, 64px) 80px;
  text-align: center;
}

.statement p:last-child {
  max-width: 760px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 22px;
  line-height: 1.45;
}

.module-showcase {
  padding: 0 clamp(16px, 3vw, 34px) 34px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.product-card {
  min-height: 520px;
  padding: clamp(28px, 4vw, 52px);
  border-radius: var(--card-radius);
  overflow: hidden;
  position: relative;
}

.product-card-large {
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  align-items: center;
  gap: 34px;
}

.light-card {
  background: var(--white);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.03);
}

.dark-card {
  color: #f5f5f7;
  background:
    radial-gradient(circle at 78% 16%, rgba(0, 113, 227, 0.38), transparent 35%),
    linear-gradient(145deg, #151516 0%, #050506 100%);
}

.blue-card {
  color: #fff;
  background:
    radial-gradient(circle at 24% 0%, rgba(255, 255, 255, 0.4), transparent 28%),
    linear-gradient(145deg, #0071e3 0%, #3b42ff 100%);
}

.deep-blue-card {
  color: #fff;
  background:
    radial-gradient(circle at 78% 10%, rgba(101, 200, 255, 0.24), transparent 34%),
    linear-gradient(145deg, #003b7a 0%, #005bb5 48%, #002b58 100%);
}

.product-card p {
  color: var(--muted);
  font-size: 19px;
  line-height: 1.48;
}

.dark-card p,
.blue-card p,
.deep-blue-card p {
  color: rgba(255, 255, 255, 0.78);
}

.product-copy {
  max-width: 520px;
}

.text-link {
  display: inline-flex;
  margin-top: 10px;
  color: var(--blue);
  font-size: 18px;
  font-weight: 600;
}

.module-icon {
  width: 96px;
  height: 96px;
  margin-bottom: 56px;
  border-radius: 24px;
  object-fit: cover;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.12);
}

.device-frame {
  justify-self: center;
  width: min(100%, 620px);
  min-height: 430px;
  padding: 34px;
  border-radius: 42px;
  background: linear-gradient(145deg, #171717, #2b2b2f);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.24);
}

.device-frame-light {
  background: linear-gradient(145deg, #f8fbff 0%, #e9f4ff 100%);
  border: 1px solid rgba(0, 113, 227, 0.12);
  box-shadow: 0 30px 80px rgba(0, 113, 227, 0.13);
}

.device-frame > img {
  width: 120px;
  height: 120px;
  margin: 0 auto 26px;
  border-radius: 28px;
  object-fit: cover;
}

.mock-screen {
  padding: 28px;
  border-radius: 28px;
  color: #1d1d1f;
  background: linear-gradient(180deg, #ffffff 0%, #f5f7fb 100%);
}

.mock-screen span {
  display: block;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.mock-screen strong {
  display: block;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.progress {
  height: 13px;
  margin-top: 28px;
  border-radius: 99px;
  background: #e8e8ed;
  overflow: hidden;
}

.progress i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #0071e3, #65c8ff);
}

.custom-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(320px, 1.15fr);
  gap: 46px;
  padding: 112px clamp(22px, 7vw, 110px);
  background: #fff;
}

.feature-list {
  display: grid;
  gap: 18px;
}

.feature-list div {
  padding: 26px;
  border-radius: 24px;
  background: #f5f5f7;
}

.feature-list span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.feature-list h3 {
  font-size: 28px;
}

.feature-list p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.5;
}

.apple-like-band {
  min-height: 540px;
  display: grid;
  place-content: center;
  padding: 80px 24px;
  text-align: center;
  color: #f5f5f7;
  background:
    radial-gradient(circle at 50% 0%, rgba(0, 113, 227, 0.5), transparent 35%),
    linear-gradient(180deg, #050506 0%, #111827 100%);
}

.apple-like-band p:last-child {
  color: rgba(245, 245, 247, 0.78);
  font-size: 23px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(280px, 420px);
  gap: 28px;
  align-items: center;
  padding: 104px clamp(22px, 7vw, 110px);
  background: var(--paper);
}

.contact-section p {
  max-width: 640px;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.45;
}

.contact-card {
  display: grid;
  gap: 16px;
  padding: 34px;
  border-radius: 30px;
  background: #fff;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

.contact-card a {
  display: block;
  padding: 16px 18px;
  border-radius: 18px;
  color: var(--blue);
  background: rgba(0, 113, 227, 0.08);
  font-size: 21px;
  font-weight: 700;
  word-break: break-word;
}

.whatsapp-link {
  display: flex !important;
  align-items: center;
  gap: 12px;
  color: #075e54 !important;
  background: rgba(37, 211, 102, 0.12) !important;
}

.whatsapp-logo {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 50%;
  object-fit: cover;
}

.contact-card a:hover {
  box-shadow: 0 0 0 5px var(--ring);
}

.contact-card small {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 26px clamp(22px, 7vw, 110px);
  color: #6e6e73;
  background: #f5f5f7;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 13px;
}

@media (max-width: 980px) {
  .hero,
  .product-card-large,
  .custom-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .hero-visual {
    min-height: 420px;
  }

  .hero-visual img {
    min-height: 420px;
  }

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

  .product-card {
    min-height: 440px;
  }

  .product-card-large {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  .site-nav {
    height: auto;
    min-height: 52px;
    align-items: flex-start;
    padding: 12px 16px;
    gap: 12px;
  }

  .nav-links {
    max-width: 230px;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px 16px;
    font-size: 12px;
  }

  .hero {
    padding: 46px 18px 24px;
  }

  .hero-visual {
    border-radius: 28px;
    min-height: 320px;
  }

  .hero-visual img {
    min-height: 320px;
  }

  .statement {
    padding-top: 76px;
  }

  .statement p:last-child,
  .contact-section p {
    font-size: 18px;
  }

  .module-showcase {
    padding-left: 10px;
    padding-right: 10px;
  }

  .product-card {
    min-height: auto;
    border-radius: 26px;
  }

  .module-icon {
    margin-bottom: 38px;
  }

  .device-frame {
    padding: 18px;
    border-radius: 28px;
    min-height: auto;
  }

  .custom-section,
  .contact-section {
    padding: 74px 18px;
  }

  .site-footer {
    flex-direction: column;
  }
}