/* ===== Base Reset & Typography ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: #333;
  line-height: 1.6;
  background: #fff;
  -webkit-text-size-adjust: 100%;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

ul {
  padding-left: 1.5em;
}

/* ===== Nav ===== */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #1a1a1a;
}

.nav-logo img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.9rem;
  color: #666;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #7A9B6D;
}

/* ===== Phone Frame ===== */
.phone-frame {
  width: 340px;
  background: #1a1a1a;
  border-radius: 44px;
  padding: 14px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.15),
    0 4px 16px rgba(0, 0, 0, 0.08);
  position: relative;
}

.phone-frame::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 28px;
  background: #1a1a1a;
  border-radius: 0 0 18px 18px;
  z-index: 2;
}

.phone-screen {
  border-radius: 32px;
  overflow: hidden;
  background: #fff;
  position: relative;
}

.phone-screen img {
  width: 100%;
  display: block;
  margin-top: -10px;
}

/* ===== Hero ===== */
.hero {
  padding: 80px 40px 100px;
  background: linear-gradient(180deg, #f8f9f7 0%, #fff 100%);
  overflow: hidden;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 80px;
}

.hero-text {
  flex: 1;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: #1a1a1a;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.subtitle {
  font-size: 1.25rem;
  color: #666;
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-phone {
  flex-shrink: 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background: #1a1a1a;
  color: #fff;
}

/* ===== Features ===== */
.features {
  padding: 80px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-row {
  display: flex;
  align-items: center;
  gap: 80px;
  margin-bottom: 100px;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row.reverse {
  flex-direction: row-reverse;
}

.feature-phone {
  flex-shrink: 0;
}

.feature-text {
  flex: 1;
}

.feature-text h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.feature-text p {
  font-size: 1.1rem;
  color: #666;
  line-height: 1.8;
  max-width: 440px;
}

/* ===== Testimonials ===== */
.testimonials {
  padding: 80px 40px;
  background: #f8f9f7;
  text-align: center;
}

.testimonials h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1000px;
  margin: 0 auto;
}

.testimonial-card {
  background: #fff;
  border-radius: 20px;
  padding: 36px 28px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  text-align: left;
}

.testimonial-stars {
  color: #f5a623;
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-quote {
  font-size: 1.05rem;
  color: #333;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  font-size: 0.9rem;
  font-weight: 600;
  color: #7A9B6D;
}

/* ===== FAQ ===== */
.faq {
  padding: 80px 40px;
  max-width: 800px;
  margin: 0 auto;
}

.faq h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #1a1a1a;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.faq-grid {
  display: grid;
  gap: 24px;
}

.faq-item {
  padding: 28px 32px;
  background: #f8f9f7;
  border-radius: 16px;
}

.faq-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 1rem;
  color: #666;
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta {
  text-align: center;
  padding: 80px 40px;
  background: linear-gradient(180deg, #fff 0%, #f8f9f7 100%);
}

.cta h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta p {
  font-size: 1.15rem;
  color: #666;
  margin-bottom: 32px;
}

/* ===== Footer ===== */
.footer {
  padding: 40px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  background: #fff;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto 24px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #1a1a1a;
}

.footer-logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  font-size: 0.9rem;
  color: #666;
  font-weight: 500;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #7A9B6D;
}

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  color: #999;
}

/* ===== Privacy / Terms Page ===== */
.privacy-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 60px 40px;
}

.privacy-page h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #333;
  margin-bottom: 8px;
}

.privacy-page .date {
  font-size: 0.95rem;
  color: #999;
  margin-bottom: 32px;
}

.privacy-page h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #333;
  margin-top: 32px;
  margin-bottom: 12px;
}

.privacy-page h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #444;
  margin-top: 20px;
  margin-bottom: 8px;
}

.privacy-page p {
  font-size: 1rem;
  color: #555;
  margin-bottom: 12px;
  line-height: 1.7;
}

.privacy-page ul {
  margin-bottom: 12px;
}

.privacy-page li {
  font-size: 1rem;
  color: #555;
  line-height: 1.7;
  margin-bottom: 4px;
}

.privacy-page a {
  color: #7A9B6D;
}

.privacy-page a:hover {
  text-decoration: underline;
}

/* ===== Mobile Responsive ===== */
@media (max-width: 900px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
    gap: 48px;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-phone .phone-frame {
    width: 300px;
  }

  .feature-row,
  .feature-row.reverse {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    margin-bottom: 60px;
  }

  .feature-text p {
    max-width: none;
  }

  .feature-phone .phone-frame {
    width: 300px;
    margin: 0 auto;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
  }
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    padding: 12px 20px;
    gap: 10px;
  }

  .nav-logo {
    font-size: 1rem;
    gap: 8px;
  }

  .nav-logo img {
    width: 32px;
    height: 32px;
  }

  .nav-links {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links a {
    font-size: 0.85rem;
  }

  .hero {
    padding: 48px 20px 60px;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1.05rem;
  }

  .features {
    padding: 48px 20px;
  }

  .feature-text h2 {
    font-size: 1.5rem;
  }

  .testimonials {
    padding: 48px 20px;
  }

  .testimonials h2 {
    font-size: 1.6rem;
  }

  .faq {
    padding: 48px 20px;
  }

  .faq h2 {
    font-size: 1.6rem;
  }

  .cta {
    padding: 48px 20px;
  }

  .cta h2 {
    font-size: 1.8rem;
  }

  .btn {
    padding: 14px 28px;
  }

  .phone-frame {
    width: 280px !important;
    border-radius: 36px;
    padding: 12px;
  }

  .phone-frame::before {
    width: 80px;
    height: 22px;
    top: 12px;
    border-radius: 0 0 14px 14px;
  }

  .phone-screen {
    border-radius: 26px;
  }

  .phone-screen img {
    margin-top: -8px;
  }

  .footer {
    padding: 24px 20px;
  }

  .footer-content {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-links {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }

  /* Privacy / Terms */
  .privacy-page {
    padding: 32px 20px;
  }

  .privacy-page h1 {
    font-size: 1.75rem;
  }

  .privacy-page h2 {
    font-size: 1.25rem;
  }

  .privacy-page h3 {
    font-size: 1.05rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 1.75rem;
  }

  .phone-frame {
    width: 240px !important;
    border-radius: 32px;
    padding: 10px;
  }

  .phone-frame::before {
    width: 70px;
    height: 18px;
    top: 10px;
    border-radius: 0 0 12px 12px;
  }

  .phone-screen {
    border-radius: 24px;
  }

  .phone-screen img {
    margin-top: -6px;
  }

  .faq-item {
    padding: 20px 24px;
  }
}