:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #171a22;
  --muted: #606779;
  --line: #dfe3ef;
  --primary: #3f5f57;
  --primary-hover: #344f48;
  --line-accent: #84a98c;
  --ghost-hover: #e8ede7;
  --hero-copy: #2b3731;
  --hero-bg: #edede9;
  --utility-bg: #c5c5bf;
  --utility-border: #d8deea;
  --utility-heading: #1e1e1a;
  --utility-copy: #1e1e1a;
  --primary-ink: #eef3ff;
  --soft: #eef1f7;
  --radius: 14px;
  --shadow: 0 12px 30px rgba(23, 26, 34, 0.07);
  --brand-font-size: 1.8rem;
  --brand-logo-size: 50px;
  --contact-bg: #ecf0f1;
  --contact-title: #151820;
  --contact-card-bg: #ffffff;
  --contact-card-border: #e6e9f0;
  --contact-card-shadow: 0 16px 30px rgba(23, 26, 34, 0.08);
  --contact-email: #052103;
  --contact-copy: #052504;
  --contact-link: #4f46b5;
  --buy-bg: #1b1c24;
  --buy-text: #f0f2f5;
  --buy-subtext: #c4c8d1;
  --buy-card-bg: #363840;
  --buy-card-border: #545966;
  --buy-price: #f4f6f8;
  --buy-line: #eceff4;
  --buy-muted: #d6dbe3;
  --buy-cta-bg: #f4f5f7;
  --buy-cta-bg-hover: #ffffff;
  --buy-cta-text: #1d2228;
  --buy-footnote: #b8bec8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

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

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

.container {
  width: min(1100px, calc(100% - 3rem));
  margin: 0 auto;
}

.hero .container {
  width: min(1040px, calc(100% - 3rem));
}

.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: var(--brand-font-size);
}

.brand img {
  width: var(--brand-logo-size);
  height: auto;
  border-radius: 8px;
  flex: 0 0 auto;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  color: var(--muted);
  font-weight: 500;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-solid {
  background: var(--primary);
  color: #fff;
}

.btn-solid:hover {
  background: var(--primary-hover);
  opacity: 1;
}

.btn-outline {
  border-color: var(--line-accent);
  background: #ffffff;
  color: var(--text);
}

.btn-outline:hover {
  background: #f7f9f6;
}

.btn-ghost {
  border-color: var(--line);
  background: var(--panel);
  box-shadow: 0 0 0 rgba(23, 26, 34, 0);
}

.btn-ghost:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(23, 26, 34, 0.12);
  border-color: var(--line-accent);
  background: var(--ghost-hover);
}

.btn-ghost:active {
  transform: translateY(0);
}

.hero {
  padding: 4.2rem 0 2.5rem;
  background: var(--hero-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 1fr;
  gap: 1.4rem;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-size: 0.9rem;
  margin: 0 0 0.55rem;
  font-weight: 600;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.05;
  margin: 0 0 1rem;
}

.sub {
  color: var(--hero-copy);
  max-width: 55ch;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 0.7rem;
  margin-top: 1.3rem;
}

.micro {
  color: var(--hero-copy);
  font-size: 0.87rem;
  margin-top: 0.9rem;
}

.hero-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-top {
  display: flex;
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
}

.card-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d0d6e6;
}

.placeholder {
  min-height: 300px;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.4rem;
  color: var(--muted);
  background: linear-gradient(160deg, #f8f9ff 0%, #f2f4fa 100%);
}

.hero-carousel {
  position: relative;
}

.carousel-viewport {
  overflow: hidden;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.carousel-track {
  display: flex;
  transition: transform 0.28s ease;
}

.carousel-slide {
  width: 100%;
  min-width: 100%;
  display: block;
  -webkit-user-drag: none;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 0;
  background: rgba(255, 255, 255, 0.26);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #1d2522;
  cursor: pointer;
  z-index: 2;
  line-height: 1;
  font-size: 1.1rem;
  font-weight: 600;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 24px rgba(23, 26, 34, 0.16);
  opacity: 0;
  pointer-events: none;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.carousel-btn.prev {
  left: 0.6rem;
}

.carousel-btn.next {
  right: 0.6rem;
}

.hero-carousel:hover .carousel-btn {
  opacity: 0.9;
  pointer-events: auto;
}

.carousel-btn:hover {
  background: rgba(255, 255, 255, 0.38);
  box-shadow: 0 12px 28px rgba(23, 26, 34, 0.2);
  transform: translateY(-50%) scale(1.03);
}

.carousel-btn:active {
  transform: translateY(-50%) scale(0.98);
}

.carousel-btn:focus {
  outline: none;
}

@media (hover: none) {
  .carousel-btn {
    opacity: 0.58;
    pointer-events: auto;
  }
}

.carousel-dots {
  display: none;
}

.carousel-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  border: 0;
  background: rgba(23, 26, 34, 0.25);
  cursor: pointer;
  padding: 0;
}

.carousel-dot.is-active {
  background: rgba(23, 26, 34, 0.62);
}

.section {
  padding: 3.7rem 0;
}

.native-section {
  background: #ffffff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.2rem 0;
}

.native-inner {
  text-align: center;
}

.native-catch {
  margin: 0 auto;
  max-width: 62ch;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 600;
  line-height: 1.45;
  color: #2f3b35;
}

.utility-basic {
  background: var(--utility-bg);
  padding: 3.2rem 0;
}

.utility-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
  justify-items: center;
  text-align: center;
}

.utility-shot {
  width: 100%;
  max-width: 760px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.utility-basic h2 {
  color: var(--utility-heading);
}

.utility-basic .section-sub {
  color: var(--utility-copy);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 0.5rem;
}

.section-sub {
  color: var(--muted);
  margin: 0 0 1.6rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
}

.feature {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
}

.feature h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.feature p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.buy-section {
  background: var(--buy-bg);
  color: var(--buy-text);
}

.buy-wrap {
  max-width: 880px;
  text-align: center;
}

.buy-wrap h2 {
  color: var(--buy-text);
  margin-bottom: 0.8rem;
}

.buy-sub {
  color: var(--buy-subtext);
  margin-bottom: 1.5rem;
}

.buy-card {
  margin: 0 auto;
  width: min(100%, 600px);
  border-radius: 14px;
  border: 1px solid var(--buy-card-border);
  background: var(--buy-card-bg);
  padding: 1.5rem 1.2rem;
}

.buy-price {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--buy-price);
}

.buy-line {
  margin: 0.6rem 0 0;
  font-size: 1.03rem;
  color: var(--buy-line);
}

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

.buy-cta {
  display: inline-block;
  margin-top: 1.25rem;
  border: 0;
  border-radius: 10px;
  background: var(--buy-cta-bg);
  color: var(--buy-cta-text);
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.8rem 1.3rem;
  cursor: pointer;
  text-decoration: none;
}

.buy-cta:hover {
  background: var(--buy-cta-bg-hover);
}

.buy-footnote {
  margin: 0.85rem 0 0;
  color: var(--buy-footnote);
  font-size: 0.92rem;
}

.contact-section {
  background: var(--contact-bg);
  padding: 4.4rem 0 4.8rem;
}

.contact-wrap {
  max-width: 760px;
  text-align: center;
}

.contact-wrap h2 {
  color: var(--contact-title);
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.contact-card {
  width: min(100%, 450px);
  margin: 0 auto;
  background: var(--contact-card-bg);
  border: 1px solid var(--contact-card-border);
  border-radius: 18px;
  box-shadow: var(--contact-card-shadow);
  padding: 2rem 2rem 1.8rem;
}

.contact-email {
  margin: 0;
  color: var(--contact-email);
  font-size: 2rem;
  font-weight: 700;
}

.contact-copy {
  margin: 1rem 0 0;
  color: var(--contact-copy);
  line-height: 1.55;
  font-size: 1.02rem;
}

.contact-copy a {
  color: var(--contact-link);
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
  margin-top: 0;
}

.footer-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  gap: 1rem;
}

@media (max-width: 920px) {
  .hero-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .utility-layout {
    grid-template-columns: 1fr;
  }

  nav {
    display: none;
  }

}