:root {
  --green-dark: #075e54;
  --green-teal: #128c7e;
  --green: #25d366;
  --green-light: #dcf8c6;
  --bg: #ffffff;
  --bg-soft: #f4faf7;
  --text: #0e1f1a;
  --text-muted: #5b6b66;
  --border: #e3ede9;
  --shadow: 0 20px 45px -20px rgba(7, 94, 84, 0.25);
  --radius: 18px;
  --radius-sm: 12px;
  --max-width: 1160px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--green-dark);
  background: var(--green-light);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
}

h1, h2, h3 { line-height: 1.15; margin: 0; font-weight: 800; letter-spacing: -0.02em; }
p { margin: 0; }

.section { padding: 5.5rem 0; }
.section-soft { background: var(--bg-soft); }
.section-header { max-width: 640px; margin: 0 auto 3rem; text-align: center; }
.section-header h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-top: 0.9rem; }
.section-header p { color: var(--text-muted); margin-top: 0.9rem; font-size: 1.05rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--green); color: #063a2e; box-shadow: 0 12px 28px -10px rgba(37, 211, 102, 0.65); }
.btn-primary:hover { background: #21bd5b; }
.btn-dark { background: var(--green-dark); color: #fff; box-shadow: 0 12px 28px -10px rgba(7, 94, 84, 0.55); }
.btn-dark:hover { background: #06463e; }
.btn-outline { background: transparent; color: var(--green-dark); border-color: var(--green-teal); }
.btn-outline:hover { background: var(--green-light); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.55); }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); }
.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.88rem; }
.btn-icon svg { width: 1.1em; height: 1.1em; }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.cta-note { color: var(--text-muted); font-size: 0.85rem; margin-top: 1rem; display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; }
.cta-note span { display: inline-flex; align-items: center; gap: 0.35rem; }
.cta-note svg { width: 1em; height: 1em; color: var(--green-teal); flex-shrink: 0; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.4rem;
}
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 800; font-size: 1.1rem; }
.brand-mark {
  width: 2.15rem; height: 2.15rem;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-teal) 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.brand-mark svg { width: 1.2rem; height: 1.2rem; }

.nav-links { display: flex; align-items: center; gap: 2rem; z-index: 41; }
.nav-links a:not(.btn) { font-weight: 600; font-size: 0.94rem; color: var(--text); opacity: 0.8; }
.nav-links a:not(.btn):hover { opacity: 1; color: var(--green-dark); }
.nav-cta { display: none; }
.header-actions { display: flex; align-items: center; gap: 1.8rem; }

.nav-toggle {
  display: none;
  width: 2.6rem; height: 2.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  align-items: center; justify-content: center;
  cursor: pointer;
}
.nav-toggle svg { width: 1.3rem; height: 1.3rem; }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 4.5rem 0 5rem;
  background: radial-gradient(circle at 15% 20%, rgba(37, 211, 102, 0.14), transparent 45%),
              radial-gradient(circle at 90% 10%, rgba(18, 140, 126, 0.12), transparent 40%),
              var(--bg);
}
.hero .container { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3.5rem; align-items: center; }
.hero h1 { font-size: clamp(2.1rem, 4.4vw, 3.1rem); margin-top: 1.1rem; }
.hero h1 .accent { color: var(--green-teal); }
.hero-sub { font-size: 1.12rem; color: var(--text-muted); margin-top: 1.3rem; max-width: 34rem; }
.hero .cta-row { margin-top: 2.1rem; }

/* Phone mockup */
.phone-wrap { display: flex; justify-content: center; position: relative; }
.phone-wrap::before {
  content: "";
  position: absolute;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(37,211,102,0.28), transparent 70%);
  filter: blur(10px);
  z-index: 0;
}
.phone {
  position: relative;
  z-index: 1;
  width: 290px;
  background: #0e1f1a;
  border-radius: 38px;
  padding: 12px;
  box-shadow: var(--shadow);
}
.phone-screen {
  background: #e9f5ee;
  border-radius: 28px;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  flex-direction: column;
}
.phone-topbar {
  background: var(--green-dark);
  color: #fff;
  padding: 1.6rem 1rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.phone-topbar .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.phone-body { padding: 0.8rem; flex: 1; display: flex; flex-direction: column; gap: 0.55rem; }
.group-row {
  display: flex; align-items: center; gap: 0.6rem;
  background: #fff; border-radius: 12px; padding: 0.55rem 0.65rem;
  font-size: 0.78rem; box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}
.group-avatar {
  width: 2rem; height: 2rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.68rem; color: #fff; flex-shrink: 0;
}
.group-meta { flex: 1; min-width: 0; }
.group-meta strong { display: block; font-size: 0.8rem; }
.group-meta span { color: var(--text-muted); font-size: 0.72rem; }
.check { color: var(--green-teal); flex-shrink: 0; }
.check svg { width: 1rem; height: 1rem; }

.composer-card {
  margin-top: 0.3rem;
  background: #fff; border-radius: 14px; padding: 0.85rem;
  box-shadow: 0 4px 14px rgba(0,0,0,0.06);
}
.composer-card .msg { font-size: 0.78rem; color: var(--text); }
.composer-card .img-chip {
  margin-top: 0.5rem;
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--bg-soft); border-radius: 8px; padding: 0.4rem 0.55rem;
  font-size: 0.7rem; color: var(--text-muted); font-weight: 600;
}
.composer-card .img-chip svg { width: 0.95rem; height: 0.95rem; color: var(--green-teal); }
.schedule-chip {
  margin-top: 0.6rem;
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: var(--green-light); color: var(--green-dark);
  font-size: 0.7rem; font-weight: 700;
  padding: 0.32rem 0.6rem; border-radius: 999px;
}
.schedule-chip svg { width: 0.85rem; height: 0.85rem; }

.phone-footer {
  margin-top: auto;
  padding: 0.75rem 0.85rem 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.phone-footer .send-btn {
  margin-left: auto;
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  background: var(--green); display: flex; align-items: center; justify-content: center;
  color: #063a2e;
}
.phone-footer .send-btn svg { width: 1.05rem; height: 1.05rem; }
.phone-footer .fake-input {
  flex: 1; height: 2.1rem; border-radius: 999px; background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.7rem 1.4rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature-icon {
  width: 3rem; height: 3rem; border-radius: 12px;
  background: linear-gradient(135deg, var(--green-light), #fff);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
  color: var(--green-dark);
}
.feature-icon svg { width: 1.5rem; height: 1.5rem; }
.feature-card h3 { font-size: 1.05rem; }
.feature-card p { color: var(--text-muted); margin-top: 0.55rem; font-size: 0.92rem; }

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  counter-reset: step;
  position: relative;
}
.step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.3rem;
  position: relative;
}
.step-num {
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  background: var(--green-dark); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.95rem;
  margin-bottom: 1rem;
}
.step h3 { font-size: 1rem; }
.step p { color: var(--text-muted); margin-top: 0.5rem; font-size: 0.9rem; }

/* Video */
.video-shell {
  max-width: 880px;
  margin: 0 auto;
}
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #0e1f1a, var(--green-dark));
  border: 2px dashed rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.video-frame .play-btn {
  width: 5rem; height: 5rem; border-radius: 50%;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.35);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  backdrop-filter: blur(4px);
}
.video-frame .play-btn svg { width: 2rem; height: 2rem; margin-left: 3px; }
.video-frame .video-caption {
  position: absolute;
  bottom: 1.3rem; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,0.75);
  font-size: 0.85rem;
  text-align: center;
  width: 90%;
}
.video-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 1rem;
}

/* Mid CTA banner */
.cta-banner {
  background: linear-gradient(120deg, var(--green-dark), var(--green-teal));
  border-radius: 28px;
  padding: 3.2rem 2.5rem;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta-banner h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.cta-banner p { color: rgba(255,255,255,0.82); margin-top: 0.6rem; max-width: 30rem; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.8rem; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.3rem 1.2rem;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 0;
  font-weight: 700;
  font-size: 0.98rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--green-teal);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--text-muted); padding-bottom: 1.1rem; font-size: 0.92rem; }

/* Footer */
.site-footer { background: #0e1f1a; color: rgba(255,255,255,0.85); padding: 3.5rem 0 2rem; }
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand .brand { color: #fff; }
.footer-brand p { color: rgba(255,255,255,0.6); margin-top: 0.8rem; max-width: 24rem; font-size: 0.9rem; }
.footer-contact { display: flex; flex-direction: column; gap: 0.9rem; align-items: flex-start; }
.footer-contact .wa-number { color: rgba(255,255,255,0.6); font-size: 0.85rem; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 1.6rem; flex-wrap: wrap; gap: 0.8rem;
  color: rgba(255,255,255,0.45); font-size: 0.82rem;
}

/* Floating WhatsApp button */
.wa-float {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 50;
  width: 3.7rem; height: 3.7rem;
  border-radius: 50%;
  background: var(--green);
  display: flex; align-items: center; justify-content: center;
  color: #0e1f1a;
  box-shadow: 0 14px 30px -8px rgba(7, 94, 84, 0.55);
}
.wa-float svg { width: 1.75rem; height: 1.75rem; }
.wa-float::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-ring 2.2s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
  z-index: -1;
}
@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.55; }
  100% { transform: scale(1.9); opacity: 0; }
}

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .phone-wrap { order: -1; margin-bottom: 1rem; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .section { padding: 3.5rem 0; }
  .nav-links { position: fixed; inset: 4.4rem 0 0 0; background: #fff; flex-direction: column; align-items: stretch; padding: 1.5rem; gap: 1.1rem; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity 0.18s ease, transform 0.18s ease; border-top: 1px solid var(--border); }
  .nav-links.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav-links a:not(.btn) { font-size: 1.05rem; }
  .nav-cta { display: inline-flex; margin-top: 0.5rem; }
  .header-actions .btn-sm.header-cta { display: none; }
  .nav-toggle { display: flex; }
  .feature-grid, .steps { grid-template-columns: 1fr; }
  .cta-banner { flex-direction: column; align-items: flex-start; padding: 2.2rem 1.5rem; }
  .footer-contact { align-items: flex-start; }
}