:root {
  --bg: #f6fbf7;
  --card: #ffffff;
  --primary: #16a34a;
  --primary-accent: #22c55e;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --gradient: linear-gradient(135deg, #16a34a 0%, #22c55e 55%, #4ade80 100%);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

header {
  padding: clamp(2rem, 6vw, 4rem) 1.5rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(34, 197, 94, .18), transparent 60%),
              radial-gradient(circle at 70% 60%, rgba(74, 222, 128, .16), transparent 65%);
  filter: blur(40px);
  opacity: .9;
}

.hero-inner {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.1;
  margin: 0 0 1.25rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  margin: 0 auto 2rem;
  max-width: 720px;
  color: var(--muted);
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .95rem 1.35rem;
  border-radius: .9rem;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .3px;
  color: #fff;
  text-decoration: none;
  background: var(--primary);
  box-shadow: 0 4px 18px -4px rgba(22, 163, 74, .45);
  transition: all .25s;
}

.btn:hover {
  background: var(--primary-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px -6px rgba(34, 197, 94, .55);
}

.btn.secondary {
  background: #e2e8f0;
  color: #0f172a;
  box-shadow: none;
}

.btn.secondary:hover {
  background: #cbd5e1;
}

.badge {
  display: inline-block;
  padding: .35rem .7rem;
  background: rgba(34, 197, 94, .12);
  border: 1px solid rgba(34, 197, 94, .35);
  border-radius: 1rem;
  font-size: .7rem;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: #15803d;
}

main { padding: 0 1.5rem 4rem; }

section {
  max-width: 1080px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 2rem;
}

.feature-card {
  background: var(--card);
  padding: 1.35rem 1.25rem 1.45rem;
  border-radius: 1.1rem;
  border: 1px solid var(--border);
  transition: .3s;
  box-shadow: 0 2px 8px -4px rgba(15, 23, 42, .08);
}

.feature-card:hover {
  border-color: var(--primary-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px -12px rgba(22, 163, 74, .3);
}

.feature-card h3 {
  margin: .2rem 0 .6rem;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  font-size: .85rem;
  line-height: 1.55;
  color: var(--muted);
}

.icon-bubble {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(34, 197, 94, .14);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: .6rem;
}

.showcase {
  margin-top: 4rem;
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: center;
}

.mock {
  background: linear-gradient(145deg, #ffffff, #f1f5f9);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  padding: 1.25rem;
  box-shadow: 0 20px 50px -18px rgba(15, 23, 42, .18);
}

.screen {
  border-radius: 1rem;
  overflow: hidden;
  background: #f1f5f9;
}

.screen img {
  width: 100%;
  display: block;
}

.screenshot-gallery {
  margin-top: 3rem;
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.screenshot-thumb {
  width: 170px;
  border-radius: 1rem;
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--card);
  transition: .3s;
  box-shadow: 0 8px 24px -10px rgba(15, 23, 42, .15);
}

.screenshot-thumb:hover {
  border-color: var(--primary-accent);
  transform: translateY(-4px);
}

.screenshot-thumb img {
  width: 100%;
  display: block;
}

.thumb-label {
  padding: .5rem;
  text-align: center;
  font-size: .75rem;
  color: var(--muted);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.steps li { display: flex; gap: .9rem; }

.step-index {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 600;
  font-size: .75rem;
}

.steps h4 { margin: .2rem 0 .4rem; font-size: .95rem; }
.steps p { margin: 0; font-size: .82rem; line-height: 1.5; color: var(--muted); }

.download-strip {
  margin-top: 4rem;
  background: linear-gradient(120deg, #ecfdf5, #ffffff);
  border: 1px solid var(--border);
  border-radius: 1.4rem;
  padding: 2rem 1.5rem 2.3rem;
}

.download-strip .inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.3rem;
}

footer {
  margin-top: 4rem;
  padding: 2.5rem 1.5rem 3rem;
  text-align: center;
  font-size: .75rem;
  color: var(--muted);
}

a.inline { color: var(--primary); text-decoration: none; }
a.inline:hover { text-decoration: underline; }

.lang-switch {
  position: absolute;
  top: 0;
  right: 0;
  font-size: .8rem;
  color: var(--muted);
}

.lang-switch a { color: var(--primary); text-decoration: none; }
.lang-switch a:hover { text-decoration: underline; }
.lang-active { color: var(--text); font-weight: 600; }

@media (min-width: 860px) {
  .download-strip .inner {
    flex-direction: row;
    text-align: left;
    justify-content: space-between;
    gap: 2.5rem;
  }
  .download-strip h2 { margin: 0; }
}