:root {
  --green: #22C55E;
  --green-dark: #16A34A;
  --green-soft: #EEF9F1;
  --green-softer: #F6FBF7;
  --graphite: #111827;
  --gray: #6B7280;
  --gray-light: #E5E7EB;
  --bg: #F8FAFC;
  --white: #FFFFFF;
  --radius: 22px;
  --shadow: 0 24px 60px rgba(17, 24, 39, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--graphite);
  background: var(--white);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229,231,235,.8);
}

.nav-wrap {
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; width: fit-content; }
.brand-mark { width: 34px; height: 34px; }
.brand-name {
  font-family: "Poppins", sans-serif;
  font-size: 1.18rem;
  font-weight: 300;
  letter-spacing: -.03em;
}
.brand-name strong { font-weight: 500; }

.desktop-nav { display: flex; gap: 32px; font-size: .9rem; font-weight: 600; }
.desktop-nav a:hover, .nav-login:hover { color: var(--green-dark); }

.nav-actions { justify-self: end; display: flex; align-items: center; gap: 18px; }
.nav-login { font-size: .9rem; font-weight: 600; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 14px;
  background: var(--green);
  color: white;
  font-weight: 600;
  box-shadow: 0 12px 30px rgba(34, 197, 94, .18);
  transition: .2s ease;
}
.button:hover { transform: translateY(-1px); background: var(--green-dark); }
.button-small { min-height: 42px; padding: 0 18px; border-radius: 12px; font-size: .88rem; }
.button-outline {
  background: transparent;
  color: var(--graphite);
  border: 1px solid var(--gray-light);
  box-shadow: none;
}
.button-outline:hover { background: var(--bg); }

.eyebrow {
  margin: 0 0 16px;
  color: var(--green-dark);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.hero { padding: 76px 0 88px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 72px; }

.hero h1, .section-heading h2, .product-copy h2, .whatsapp-copy h2, .cta-card h2 {
  font-family: "Poppins", sans-serif;
  font-weight: 400;
  letter-spacing: -.045em;
}

.hero h1 {
  max-width: 620px;
  margin: 0;
  font-size: clamp(3.4rem, 7vw, 6rem);
  line-height: .98;
}
.hero h1 span { color: var(--green); }

.hero-lead {
  max-width: 590px;
  margin: 28px 0 0;
  color: var(--gray);
  font-size: 1.1rem;
  line-height: 1.75;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note { display: flex; align-items: center; gap: 10px; margin-top: 24px; color: var(--gray); font-size: .9rem; }
.check-dot {
  width: 22px; height: 22px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--green-soft); color: var(--green-dark); font-weight: 700;
}

.hero-visual { position: relative; min-height: 560px; display: grid; place-items: center; }
.shape {
  position: absolute;
  width: 470px; height: 470px;
  border-radius: 45% 55% 50% 50%;
  background: linear-gradient(135deg, #EEF9F1, #F8FAFC);
  transform: rotate(-8deg);
}
.phone {
  position: relative;
  width: 275px;
  height: 550px;
  padding: 12px;
  background: #101010;
  border-radius: 44px;
  box-shadow: 0 40px 80px rgba(17,24,39,.22);
  transform: rotate(5deg);
}
.phone-top {
  position: absolute;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  width: 88px; height: 20px;
  background: #080808;
  border-radius: 20px;
  z-index: 2;
}
.phone-screen {
  height: 100%;
  background: white;
  border-radius: 34px;
  padding: 38px 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.screen-head { display: flex; align-items: center; justify-content: space-between; }
.screen-label { font-size: .74rem; color: var(--gray); }
.screen-head h3 { margin: 2px 0 0; font-size: 1.1rem; }
.screen-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--green-soft); color: var(--green-dark);
  display: grid; place-items: center; font-size: .68rem; font-weight: 700;
}
.calendar-strip {
  display: grid; grid-template-columns: repeat(5,1fr); gap: 5px;
  color: var(--gray); font-size: .55rem; text-align: center;
}
.calendar-strip span { padding: 7px 2px; border-radius: 9px; }
.calendar-strip b { color: var(--graphite); font-size: .72rem; }
.calendar-strip .active { background: var(--green); color: white; }
.calendar-strip .active b { color: white; }
.lesson { padding: 12px; border-radius: 12px; font-size: .68rem; display: grid; gap: 2px; }
.lesson small { color: var(--gray); }
.lesson span { color: var(--gray); }
.lesson-green { background: #E9F8EE; }
.lesson-purple { background: #F1ECFF; }
.lesson-blue { background: #EAF2FF; }
.screen-bottom {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--gray-light);
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 4px;
  font-size: .48rem; text-align: center; color: var(--gray);
}
.screen-bottom .selected { color: var(--green-dark); font-weight: 700; }

.pain-section { padding: 90px 0; background: var(--bg); border-block: 1px solid #F0F2F4; }
.section-heading.centered { text-align: center; max-width: 820px; margin: 0 auto; }
.section-heading h2, .product-copy h2, .whatsapp-copy h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4.5vw, 4rem);
  line-height: 1.08;
}
.section-heading h2 span { color: var(--green); }

.pain-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--gray-light);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  overflow: hidden;
}
.pain-grid article { background: white; padding: 32px; }
.icon-circle {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--green-soft); color: var(--green-dark);
  display: grid; place-items: center; font-weight: 700;
  margin-bottom: 22px;
}
.pain-grid h3 { margin: 0 0 10px; font-size: 1rem; }
.pain-grid p { margin: 0; color: var(--gray); line-height: 1.65; font-size: .92rem; }

.product-section { padding: 110px 0; background: var(--green-softer); }
.product-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 76px; align-items: center; }
.desktop-app {
  display: flex;
  min-height: 430px;
  border: 1px solid rgba(17,24,39,.08);
  border-radius: 24px;
  background: white;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.app-sidebar {
  width: 66px;
  background: #FBFCFC;
  border-right: 1px solid var(--gray-light);
  padding: 20px 0;
  display: flex; flex-direction: column; align-items: center; gap: 28px;
  color: #9CA3AF;
}
.app-sidebar img { width: 30px; margin-bottom: 4px; }
.app-sidebar .side-active { color: var(--green); }
.app-content { flex: 1; padding: 28px; }
.app-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.app-toolbar small { display: block; color: var(--gray); margin-bottom: 5px; }
.toolbar-actions { color: var(--gray); font-size: .78rem; }
.week-grid { display: grid; grid-template-columns: 48px repeat(4,1fr); min-height: 290px; border-top: 1px solid var(--gray-light); }
.time-col, .day-col { display: grid; grid-template-rows: 40px repeat(4, 1fr); }
.time-col span { font-size: .62rem; color: var(--gray); padding-top: 12px; }
.day-col { border-left: 1px solid #F0F2F4; position: relative; }
.day-col b { font-size: .68rem; color: var(--gray); padding: 12px 8px; }
.day-col.current b { color: var(--green-dark); }
.slot {
  margin: 4px 6px;
  padding: 10px;
  border-radius: 10px;
  font-size: .58rem;
  align-self: start;
}
.slot.green { background:#E9F8EE; }
.slot.purple { background:#F1ECFF; }
.slot.blue { background:#EAF2FF; }
.slot.yellow { background:#FFF5D8; }
.slot.low { grid-row: 3; }
.slot.mid { grid-row: 2; }
.slot small { color: var(--gray); }

.section-lead { color: var(--gray); line-height: 1.75; font-size: 1rem; margin: 22px 0 0; }
.feature-list { margin-top: 38px; display: grid; gap: 22px; }
.feature-item { display: grid; grid-template-columns: 48px 1fr; gap: 18px; align-items: start; }
.feature-item > span {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--green); color: white; font-weight: 700; font-size: .78rem;
}
.feature-item h3 { margin: 0 0 6px; font-size: 1rem; }
.feature-item p { margin: 0; color: var(--gray); line-height: 1.6; font-size: .9rem; }

.audience-section { padding: 95px 0; }
.audience-grid {
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.audience-grid > div {
  min-height: 130px;
  border: 1px solid var(--gray-light);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 1.6rem;
}
.audience-grid span { font-size: .8rem; text-align: center; font-weight: 600; padding: 0 12px; }

.whatsapp-section { padding: 20px 0 95px; }
.whatsapp-card {
  padding: 52px;
  border-radius: 28px;
  background: var(--green-soft);
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  align-items: center;
  gap: 70px;
}
.whatsapp-visual { position: relative; min-height: 220px; }
.whatsapp-logo {
  width: 108px; height: 108px; border-radius: 28px;
  background: var(--green); color: white;
  display: grid; place-items: center; font-size: 2.6rem;
  box-shadow: 0 18px 35px rgba(34,197,94,.2);
}
.bubble {
  position: absolute;
  top: 10px; left: 130px;
  width: 220px;
  padding: 14px 16px;
  border-radius: 14px;
  background: white;
  box-shadow: 0 12px 30px rgba(17,24,39,.08);
  font-size: .8rem;
}
.bubble.small { top: 96px; left: 110px; width: 190px; }
.whatsapp-copy p:last-child { color: var(--gray); line-height: 1.75; }

.cta-section { padding-bottom: 95px; }
.cta-card {
  min-height: 245px;
  padding: 48px 56px;
  border-radius: 28px;
  background: linear-gradient(135deg, #18B957, #22C55E);
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}
.cta-card h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.6rem); }
.cta-card p { max-width: 700px; margin: 12px 0 0; color: rgba(255,255,255,.82); line-height: 1.65; }
.eyebrow.light { color: rgba(255,255,255,.82); }
.button-light { background: white; color: var(--graphite); box-shadow: none; }
.button-light:hover { background: #F7F7F7; color: var(--graphite); }

.faq-section { padding: 10px 0 100px; }
.faq-grid { margin-top: 42px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
details {
  border: 1px solid var(--gray-light);
  border-radius: 14px;
  background: white;
  padding: 0 18px;
}
summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-size: .9rem;
  font-weight: 600;
}
summary::-webkit-details-marker { display: none; }
details p { margin: 0; padding: 0 0 18px; color: var(--gray); line-height: 1.65; font-size: .88rem; }

.site-footer { border-top: 1px solid var(--gray-light); padding: 50px 0 28px; background: #FBFCFD; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3,1fr); gap: 48px; }
.footer-brand { margin-bottom: 12px; }
.footer-grid p { color: var(--gray); font-size: .88rem; }
.footer-grid h4 { margin: 0 0 14px; font-size: .82rem; }
.footer-grid > div:not(:first-child) { display: flex; flex-direction: column; gap: 10px; }
.footer-grid a { color: var(--gray); font-size: .82rem; }
.footer-grid a:hover { color: var(--green-dark); }
.footer-bottom {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--gray-light);
  display: flex;
  justify-content: space-between;
  color: #9CA3AF;
  font-size: .76rem;
}

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .nav-wrap { grid-template-columns: 1fr auto; }
  .hero-grid, .product-grid, .whatsapp-card { grid-template-columns: 1fr; }
  .hero { padding-top: 54px; }
  .hero-copy { text-align: center; }
  .hero-lead { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-note { justify-content: center; }
  .hero-visual { min-height: 510px; }
  .product-copy { order: -1; }
  .audience-grid { grid-template-columns: repeat(3, 1fr); }
  .pain-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1180px); }
  .site-header .nav-login { display: none; }
  .nav-actions { gap: 8px; }
  .brand-name { font-size: 1rem; }
  .hero h1 { font-size: 3.25rem; }
  .hero-visual { min-height: 460px; }
  .phone { width: 235px; height: 470px; }
  .shape { width: 360px; height: 360px; }
  .desktop-app { min-height: 330px; }
  .app-content { padding: 18px; }
  .week-grid { grid-template-columns: 38px repeat(4,1fr); }
  .slot { padding: 6px; font-size: .48rem; }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .whatsapp-card { padding: 28px; }
  .bubble { left: 92px; width: 180px; }
  .bubble.small { left: 72px; width: 165px; }
  .cta-card { padding: 34px 28px; flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}