:root {
  --primary: #FF8DA1;
  --primary-light: #FFF5F7;
  --primary-border: #FFCDD6;
  --text: #111111;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --background: #F5F4F0;
  --surface: #FFFFFF;
  --border: #EAE8E3;
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, Helvetica, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 720px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--background);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}

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

.nav-logo span {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* ── Page wrapper ── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 80px 0 64px;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 8px 32px rgba(255, 141, 161, 0.25);
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(36px, 6vw, 52px);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.app-store-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--text);
  color: #fff;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: opacity 0.15s, transform 0.15s;
}

.app-store-btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.app-store-btn svg {
  width: 20px;
  height: 20px;
  fill: #fff;
  flex-shrink: 0;
}

.app-store-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.app-store-label small {
  font-size: 10px;
  font-weight: 400;
  opacity: 0.7;
  line-height: 1;
}

.app-store-label strong {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
}

/* ── Features ── */
.features {
  padding: 0 0 80px;
}

.features h2 {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 32px;
  text-align: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: block;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.2px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── Content pages (privacy, terms, support) ── */
.content-hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.content-hero .label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}

.content-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.content-hero .meta {
  font-size: 14px;
  color: var(--text-tertiary);
}

.content-body {
  padding-bottom: 80px;
}

.content-body h2 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 40px 0 12px;
  color: var(--text);
}

.content-body h2:first-child {
  margin-top: 0;
}

.content-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.content-body ul, .content-body ol {
  padding-left: 20px;
  margin-bottom: 12px;
}

.content-body li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 4px;
}

.content-body a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--primary);
}

.highlight-box {
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 24px 0;
}

.highlight-box p {
  color: var(--text);
  margin: 0;
}

/* ── Support ── */
.support-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.support-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.support-card .icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: block;
}

.support-card h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.support-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.support-card a.btn {
  display: inline-block;
  background: var(--text);
  color: #fff;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  transition: opacity 0.15s;
}

.support-card a.btn:hover {
  opacity: 0.8;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.faq-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* ── Responsive ── */
@media (max-width: 560px) {
  .nav-links {
    gap: 16px;
  }
  .features-grid,
  .support-options {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}