@font-face {
  font-family: 'NanumSquareRound';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_two@1.0/NanumSquareRound.woff') format('woff');
  font-weight: normal;
  font-display: swap;
}

:root {
  --primary: #34D399;
  --primary-dark: #065F46;
  --primary-100: #E1F8F0;
  --primary-50: #EFFBF7;
  --text-1: #1A2020;
  --text-2: #4A5C58;
  --text-3: #7A8C88;
  --surface-100: #F5F8F7;
  --border-200: #EAEEED;
  --white: #FFFFFF;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", sans-serif;
  color: var(--text-1);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: 'NanumSquareRound', -apple-system, BlinkMacSystemFont,
    "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  font-weight: 700;
}

html[lang="vi"] h1, html[lang="vi"] h2, html[lang="vi"] h3 {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 800;
}

html[lang="ja"] h1, html[lang="ja"] h2, html[lang="ja"] h3 {
  font-family: 'M PLUS Rounded 1c', 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 800;
}

/* Header */
.header {
  border-bottom: 1px solid var(--border-200);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 76px;
}

.logo {
  height: 34px;
  width: auto;
}

/* Hero */
.hero {
  padding: 76px 0 60px;
  border-bottom: 1px solid var(--border-200);
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 56px;
}

.hero-text h1 {
  font-size: 44px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-2);
  margin-bottom: 36px;
}

.hero-icon img {
  width: 188px;
  height: 188px;
  border-radius: 42px;
  flex-shrink: 0;
}

/* Store buttons */
.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.store-links-center {
  justify-content: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: 10px;
  background: var(--surface-100);
  color: var(--text-1);
  font-size: 15.5px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.15s;
}

.store-btn:hover {
  opacity: 0.75;
}

.store-btn img {
  display: block;
  flex-shrink: 0;
}

/* Sections */
.section-title {
  font-size: 29px;
  letter-spacing: -0.01em;
  margin-bottom: 40px;
}

.features {
  padding: 80px 0;
}

.feature-list {
  list-style: none;
}

.feature-row {
  display: flex;
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--border-200);
}

.feature-row:last-child {
  border-bottom: 1px solid var(--border-200);
}

.feature-index {
  font-family: 'NanumSquareRound', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--primary-dark);
  padding-top: 3px;
  flex-shrink: 0;
  width: 36px;
}

.feature-row h3 {
  font-size: 19px;
  margin-bottom: 9px;
}

.feature-row p {
  font-size: 16px;
  color: var(--text-3);
  max-width: 600px;
}

/* Audience */
.audience {
  background: var(--surface-100);
  padding: 72px 0;
}

.audience-inner {
  max-width: 640px;
}

.audience-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.audience-list li {
  font-size: 16.5px;
  font-weight: 500;
  color: var(--text-2);
  padding-left: 24px;
  position: relative;
}

.audience-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

/* Download */
.download {
  padding: 84px 0;
  text-align: center;
}

.download-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.download .section-title {
  margin-bottom: 8px;
}

.download-sub {
  font-size: 16.5px;
  color: var(--text-3);
  margin-bottom: 30px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-200);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.footer-logo {
  height: 18px;
  opacity: 0.7;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
}

.footer-links a {
  color: var(--text-3);
  text-decoration: none;
  font-weight: 600;
  padding: 3px 2px;
}

.footer-links a:hover {
  color: var(--text-1);
}

.footer-links a.active {
  color: var(--primary-dark);
}

.footer-links .divider {
  color: var(--border-300, var(--border-200));
}

.footer-download {
  color: var(--primary-dark) !important;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.disclaimer {
  font-size: 12px;
  color: var(--text-3);
  max-width: 480px;
}

.support-email {
  font-size: 12.5px;
  color: var(--text-2);
}

.support-email a {
  color: var(--text-2);
  text-decoration: none;
}

.support-email a:hover {
  text-decoration: underline;
}

.copyright {
  font-size: 12px;
  color: var(--text-3);
}

/* Responsive */
@media (max-width: 720px) {
  .hero {
    padding: 48px 0 40px;
  }

  .hero-inner {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-text h1 {
    font-size: 30px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .hero-icon img {
    width: 132px;
    height: 132px;
    border-radius: 30px;
  }

  .br-desktop {
    display: none;
  }

  .store-links {
    justify-content: center;
    width: 100%;
  }

  .features {
    padding: 56px 0;
  }

  .feature-row {
    gap: 16px;
  }

  .section-title {
    font-size: 23px;
  }
}