/* Reset and base */
* {
  box-sizing: border-box;
}
body {
  font-family: 'Nunito', sans-serif;
  margin: 0;
  background: linear-gradient(135deg, #f3f7f8 0%, #b3d5d8 100%);
  color: #2a3e40;
  min-height: 100vh;
}
.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Header */
.header {
  background: linear-gradient(90deg, #4aa1a7 0%, #6bb8bc 100%);
  padding: 18px 0;
  color: #f9fafb;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 3px 14px rgba(0,0,0,0.15);
}
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: 'Nunito', sans-serif;
  font-size: 2.8rem;
  font-weight: 800;
  color: #f9fafb;
  text-decoration: none;
  letter-spacing: 1.5px;
}
.nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 28px;
}
.nav a {
  color: #f9fafb;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.15rem;
  transition: color 0.3s ease;
}
.nav a:hover {
  color: #d4e9eb;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, #6bb8bc 0%, #4aa1a7 90%, #3c8e90 100%);
  color: #f9fafb;
  text-align: center;
  padding: 90px 20px 60px 20px;
  border-bottom: 4px solid #d4e9eb;
  margin-bottom: 40px;
}
.hero h1 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 24px;
  letter-spacing: 1.8px;
  text-shadow: 0 0 14px #d4e9ebcc;
}
.hero p {
  font-size: 1.5rem;
  margin-bottom: 32px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}
.btn-primary {
  background: #d4e9eb;
  color: #3c8e90;
  padding: 20px 48px;
  border: none;
  border-radius: 32px;
  font-size: 1.5rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(212,233,235,0.7);
  transition: background 0.3s ease;
}
.btn-primary:hover {
  background: #a9cfcf;
  color: #fff;
}
.btn-logo-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-top: 32px;
}
.hero-logo-link {
  display: inline-block;
  width: 280px;
  height: 80px;
  overflow: hidden;
}
.hero-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 12px #d4e9eb);
}

/* About */
.about-game {
  background: #d9f1f3;
  padding: 65px 0;
  margin: 0 auto 40px auto;
  border-radius: 24px;
  box-shadow: 0 0 40px #a9cfcfcc;
}
.about-content {
  display: flex;
  align-items: center;
  gap: 56px;
  flex-wrap: wrap;
}
.slot-img {
  width: 360px;
  border-radius: 28px;
  box-shadow: 0 0 45px #a9cfcfcc;
  border: 4px solid #a9cfcf;
  background: #e6f5f6;
}
.about-text {
  flex: 1;
  min-width: 300px;
  color: #2a3e40;
}
.about-text h2 {
  font-size: 3rem;
  color: #3c8e90;
  margin-bottom: 32px;
  text-shadow: 0 0 10px #a9cfcfcc;
}
.about-text p {
  font-size: 1.35rem;
  margin-bottom: 26px;
  line-height: 1.7;
}
.about-text ul {
  color: #5e8c8d;
  padding-left: 32px;
  margin: 0;
  font-weight: 700;
}
.about-text li {
  margin-bottom: 16px;
}

/* Features */
.features {
  padding: 65px 0;
  background: linear-gradient(135deg, #3c8e90 70%, #2a6a6c 100%);
  margin: 0 auto 40px auto;
  border-radius: 24px;
  box-shadow: 0 0 38px #4b7e80cc;
}
.features h2 {
  text-align: center;
  color: #d9f1f3;
  margin-bottom: 52px;
  font-size: 2.9rem;
  text-shadow: 0 0 12px #a9cfcfcc;
}
.feature-list {
  display: flex;
  gap: 34px;
  flex-wrap: wrap;
  justify-content: center;
}
.feature-item {
  flex: 1 1 280px;
  background: rgba(169, 223, 224, 0.3);
  border-radius: 28px;
  padding: 38px 30px;
  margin-bottom: 32px;
  min-width: 280px;
  max-width: 360px;
  box-shadow: 0 0 22px #92b9bbcc;
  border: 2px solid #5e8c8d99;
  text-align: center;
  color: #2a3e40;
  font-family: 'Nunito', sans-serif;
  transition: transform 0.3s ease;
}
.feature-item:hover {
  transform: scale(1.07);
  box-shadow: 0 0 42px #a9cfcfcc;
}
.feature-item h3 {
  margin-bottom: 24px;
  color: #a9cfcf;
  font-size: 1.6rem;
  font-weight: 800;
}
.feature-item p {
  font-size: 1.25rem;
  line-height: 1.7;
}

/* SEO text */
.seo-text {
  padding: 50px 0 50px 0;
  background: linear-gradient(90deg, #2a6a6c 60%, #3c8e90 130%);
  color: #d9f1f3;
  margin-bottom: 40px;
  border-radius: 24px;
  text-align: center;
  font-family: 'Nunito', sans-serif;
}
.seo-text h2 {
  font-size: 2rem;
  margin-bottom: 30px;
  font-weight: 700;
  text-shadow: 0 0 14px #a9cfcfcc;
}
.seo-text h3 {
  font-size: 1.6rem;
  margin-bottom: 30px;
  font-weight: 700;
  text-shadow: 0 0 14px #a9cfcfcc;
}
.seo-text p {
  font-size: 1.3rem;
  margin-bottom: 22px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* FAQ */
.faq {
  padding: 60px 0;
  background: #2a6a6c;
  max-width: 940px;
  margin: 0 auto 40px auto;
  border-radius: 26px;
  box-shadow: 0 0 40px #4b7e80cc;
  color: #d9f1f3;
  font-family: 'Nunito', sans-serif;
}
.faq h2 {
  text-align: center;
  margin-bottom: 48px;
  font-size: 2.6rem;
  text-shadow: 0 0 15px #a9cfcfcc;
}
.faq-item {
  margin-bottom: 30px;
  background: rgba(169, 223, 224, 0.3);
  border-radius: 14px;
  padding: 26px 30px;
  border-left: 7px solid #a9cfcfbb;
  transition: background 0.3s ease;
}
.faq-item:hover {
  background: rgba(169, 223, 224, 0.5);
}
.faq-item h3 {
  font-size: 1.5rem;
  margin-bottom: 14px;
}
.faq-item p {
  font-size: 1.25rem;
  line-height: 1.7;
}

/* Footer */
.footer {
  background: linear-gradient(90deg, #4aa1a7 0%, #3c8e90 100%);
  color: #d9f1f3;
  padding: 30px 0 22px 0;
  text-align: center;
  font-family: 'Nunito', sans-serif;
  font-size: 1.05rem;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: flex;
  justify-content: center;
  gap: 26px;
}
.footer-links li a {
  color: #d9f1f3;
  text-decoration: underline;
  font-weight: 700;
  transition: color 0.3s ease;
}
.footer-links li a:hover {
  color: #a9cfcf;
}

/* Responsive */
@media (max-width: 900px) {
  .about-content {
    flex-direction: column;
    gap: 30px;
    align-items: flex-start;
  }
  .slot-img {
    margin: 0 auto;
  }
  .feature-list {
    flex-direction: column;
    gap: 26px;
  }
}
@media (max-width: 650px) {
  .logo {
    font-size: 1.9rem;
  }
  .about-text h2, .features h2, .faq h2, .seo-text h2 {
    font-size: 1.6rem;
  }
  .footer-links {
    flex-direction: column;
    gap: 16px;
  }
}
@media (max-width: 500px) {
  .hero h1 {
    font-size: 1.8rem;
  }
}
@media (max-width: 600px) {
  .header .container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 18px;
  }
  .logo {
    font-size: 1.5rem;
    gap: 14px;
    margin-bottom: 12px;
  }
  .nav ul {
    gap: 18px;
    font-size: 1rem;
    flex-wrap: wrap;
  }
  .nav a {
    font-size: 1rem;
    padding: 5px 0;
  }
}
.container {
  width: 98%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 10px;
  padding-right: 10px;
}
@media (max-width: 600px) {
  .container {
    padding-left: 0;
    padding-right: 0;
    width: 100%;
  }
}
@media (max-width: 600px) {
  .hero {
    padding: 56px 20px 38px 20px;
  }
  .hero h1 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    text-align: center;
  }
  .hero p {
    font-size: 1rem;
    margin-bottom: 28px;
    text-align: center;
  }
  .btn-primary {
    width: 94%;
    min-width: 0;
    font-size: 1rem;
    padding: 20px 0;
    margin: 0 auto;
    display: block;
  }
}
@media (max-width: 600px) {
  .demo-frame {
    max-width: 100vw;
    border-radius: 18px;
    border-width: 3px;
    aspect-ratio: 16/9;
  }
  .demo-frame img {
    border-radius: 18px;
  }
  .about-content {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }
  .slot-img {
    width: 96vw;
    max-width: 440px;
    border-radius: 20px;
    margin: 0 auto;
  }
}
@media (max-width: 600px) {
  .seo-text, .about-game, .features, .demo-slot, .faq {
    padding-left: 14px;
    padding-right: 14px;
  }
  .seo-text h2, .features h2, .faq h2 {
    font-size: 1rem;
  }
  .seo-text p, .about-text p, .features p, .faq-item p {
    font-size: 1rem;
  }
}
@media (max-width: 600px) {
  .footer-links {
    flex-direction: column;
    gap: 14px;
  }
  .footer {
    font-size: 1rem;
    padding: 24px 0 18px 0;
  }
}