:root{
  --bg: #ffffff;
  --text: #0b0f19;
  --muted: #4b5563;
  --border: #e5e7eb;
  --accent: #1d4ed8;
  --container: 1060px;
  --radius: 16px;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

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

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.header{
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand{
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-badge{
  width: 34px;
  height: 34px;
  border-radius: 10px;
  overflow: hidden;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
}

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

.nav{
  display: flex;
  gap: 18px;
  align-items: center;
  font-weight: 600;
}

.nav a{
  padding: 10px 12px;
  border-radius: 10px;
  color: #111827;
}

.nav a[aria-current="page"]{
  background: #f3f4f6;
  text-decoration: none;
}

.hero{
  padding: 64px 0 28px;
  text-align: center;
}

.hero h1{
  margin: 0;
  font-size: clamp(44px, 6vw, 72px);
  letter-spacing: -0.04em;
}

.hero p{
  margin: 16px auto 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.rule{
  border-top: 1px dashed var(--border);
  margin: 32px 0;
}

.feature{
  padding: 38px 0 72px;
}

.feature-app{
  padding: 18px 0 30px;
}

.feature-row{
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 28px;
  padding: 28px 0;
  max-width: 760px;
  margin: 0 auto;
}

.feature-app .feature-row{
  padding: 10px 0;
}

.feature-content{
  display: flex;
  flex-direction: column;
  gap: 0;
  align-items: flex-start;
}

.app-icon{
  width: 120px;
  height: 120px;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.10);
  flex: 0 0 auto;
}

.app-icon img{
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-icon-rounded{
  border-radius: 28px;
}

.feature-title{
  font-size: clamp(30px, 4vw, 54px);
  color: #1e3a8a;
  letter-spacing: -0.03em;
  margin: 0;
}

.feature-title-link{
  color: inherit;
  text-decoration: none;
}

.feature-title-link:hover{
  text-decoration: underline;
}

.page{
  padding: 54px 0 72px;
}

.page h1{
  text-align: center;
  font-size: clamp(44px, 6vw, 80px);
  margin: 0 0 24px;
  letter-spacing: -0.04em;
}

.card{
  max-width: 820px;
  margin: 0 auto;
  padding: 22px 6px;
}

.meta{
  font-weight: 700;
  margin-bottom: 18px;
}

.section-title{
  font-weight: 800;
  margin: 26px 0 10px;
}

.text{
  color: #111827;
}

.text p{
  margin: 0 0 14px;
  color: #111827;
}

.text p.muted{
  color: var(--muted);
}

.footer-space{
  height: 24px;
}

/* Responsive */
@media (max-width: 680px){
  .feature-row{
    flex-direction: column;
    text-align: center;
  }
  .feature-content{
    align-items: center;
  }
  .feature-title{
    margin-top: 10px;
  }
}