:root {
  --bg: #f4fcf8;
  --bg-alt: #edf9f3;
  --card: #ffffff;
  --card-soft: #f8fcf9;
  --text: #17342b;
  --muted: #5c746b;
  --line: #d7e8dd;
  --accent: #1fa56f;
  --accent-strong: #117a51;
  --accent-soft: #e7f7ee;
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --shadow: 0 24px 50px rgba(18, 74, 46, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% -2%, rgba(31, 165, 111, 0.18), transparent 24%),
    radial-gradient(circle at 90% 10%, rgba(127, 212, 165, 0.18), transparent 22%),
    linear-gradient(180deg, #f8fdf9 0%, #eff8f2 55%, #f8fcf8 100%);
}

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

button,
summary {
  font: inherit;
}

.page-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 48px;
}

.site-header {
  position: sticky;
  top: 10px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px rgba(17, 80, 52, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid #bddfca;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-copy {
  display: flex;
  flex-direction: column;
}

.brand-copy strong,
.site-nav,
.header-cta,
.button,
.steps-grid span {
  font-family: "Space Grotesk", sans-serif;
}

.brand-copy small {
  color: var(--muted);
}

.site-nav {
  display: flex;
  gap: 24px;
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent-strong);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.header-cta,
.button-primary {
  background: linear-gradient(135deg, #1fa56f, #2dc486);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(31, 165, 111, 0.24);
}

.button-secondary {
  background: #ffffff;
  border-color: var(--line);
  color: var(--accent-strong);
  font-weight: 600;
}

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

section {
  margin-bottom: 22px;
  padding: 34px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 1.1;
  font-weight: 800;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
}

.section-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.6rem);
}

.hero-text,
.section-heading > p,
.overview-grid p,
.feature-grid p,
.steps-grid p,
.faq p,
.site-footer p,
.site-footer li,
.offers p,
.seo-content p,
.android-page p,
.policy p,
.terms p,
.app-features p {
  color: var(--muted);
  line-height: 1.72;
}

.hero-text {
  margin: 16px 0 0;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.section-actions {
  margin-top: 18px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 0;
}

.hero-metrics div,
.overview-grid article,
.feature-grid article,
.steps-grid article,
.faq-list details {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card-soft);
}

.hero-metrics dt {
  margin-bottom: 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.hero-metrics dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-visual {
  background: linear-gradient(180deg, #e7f7ee, #f8fcf8);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 14px;
}

.hero-visual img {
  display: block;
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  min-height: 300px;
  max-height: 530px;
}

.section-heading {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.split-heading {
  grid-template-columns: 1fr auto;
  align-items: end;
}

.split-heading > p {
  margin: 0;
  max-width: 36ch;
}

.overview-grid,
.feature-grid,
.steps-grid,
.preview-grid {
  display: grid;
  gap: 16px;
}

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

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

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

.overview-grid h3,
.feature-grid h3,
.steps-grid h3 {
  margin: 0 0 8px;
  font-size: 1.18rem;
}

.steps-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  margin-bottom: 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
}

.preview-slider {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
}

.preview-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(180px, 220px);
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 4px;
}

.preview-track::-webkit-scrollbar {
  height: 8px;
}

.preview-track::-webkit-scrollbar-thumb {
  background: #b8d9ea;
  border-radius: 999px;
}

.preview-track figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #ffffff;
  scroll-snap-align: start;
}

.preview-track img {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 18;
  object-fit: cover;
  cursor: zoom-in;
}

.slider-btn {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--accent-strong);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.preview-hint {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
}

.lightbox.is-open {
  display: grid;
  place-items: center;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 30, 42, 0.68);
}

.lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(92vw, 780px);
  max-height: 90vh;
  padding: 18px;
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: 0 30px 60px rgba(0, 24, 36, 0.28);
}

.lightbox-close {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 999px;
  background: #f0f8fd;
  color: var(--accent-strong);
  font-size: 1.4rem;
  cursor: pointer;
}

.lightbox-image-wrap {
  overflow: auto;
  max-height: calc(90vh - 100px);
  border-radius: 14px;
  background: #f5fbff;
}

.lightbox-image-wrap img {
  display: block;
  width: 100%;
  max-width: 100%;
  transform-origin: center;
  transition: transform 180ms ease;
}

.lightbox-controls {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 12px;
}

.lightbox-controls button {
  min-width: 72px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--accent-strong);
  font-weight: 700;
  cursor: pointer;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details[open] {
  border-color: #b5dff2;
  background: #f2faff;
}

.faq-list summary {
  list-style: none;
  cursor: pointer;
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list p {
  margin: 12px 0 0;
}

.site-footer {
  display: grid;
  grid-template-columns: 1.1fr 1fr auto;
  gap: 16px;
  padding: 26px 30px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.site-footer ul {
  margin: 0;
  padding-left: 18px;
}

.site-footer li {
  margin-bottom: 8px;
}

.footer-note {
  white-space: nowrap;
}

@media (max-width: 1100px) {
  .hero,
  .split-heading,
  .site-footer {
    grid-template-columns: 1fr;
  }

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

  .site-footer {
    gap: 6px;
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100% - 16px, 100%);
  }

  .site-header {
    flex-wrap: wrap;
    border-radius: 26px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  section {
    padding: 24px;
    border-radius: 24px;
  }

  .overview-grid,
  .feature-grid,
  .steps-grid,
  .hero-metrics,
  .preview-grid {
    grid-template-columns: 1fr;
  }

  .preview-slider {
    grid-template-columns: 1fr;
  }

  .slider-btn {
    display: none;
  }
}

@media (max-width: 560px) {
  .site-nav {
    gap: 12px;
    font-size: 0.92rem;
  }

  .header-cta,
  .button {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-visual img {
    min-height: 260px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

.hero h1 {
  letter-spacing: -0.02em;
}

section {
  backdrop-filter: blur(2px);
}

.overview-grid article,
.feature-grid article,
.steps-grid article,
.faq-list details,
.hero-metrics div {
  box-shadow: 0 10px 24px rgba(17, 80, 52, 0.04);
}

.button-secondary {
  background: rgba(255,255,255,0.92);
}

.preview-track figure,
.hero-visual {
  box-shadow: 0 18px 36px rgba(17, 80, 52, 0.06);
}