:root {
  --bg: #0b1020;
  --bg-soft: #111a33;
  --card: rgba(255, 255, 255, 0.08);
  --text: #f8fbff;
  --muted: #c6d3f3;
  --primary: #4f8cff;
  --primary-2: #67d5b5;
  --line: rgba(255, 255, 255, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft Yahei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 80% -20%, rgba(103, 213, 181, 0.2), transparent 60%),
    radial-gradient(900px 600px at -10% -30%, rgba(79, 140, 255, 0.25), transparent 60%),
    var(--bg);
  line-height: 1.6;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

/* Header */
/* Language Switcher */
.lang-switcher {
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
  font-size: 13px;
}

.lang-switcher-inner {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
}

.lang-current {
  color: var(--text);
  font-weight: 600;
  padding: 4px 10px;
  background: var(--card);
  border-radius: 4px;
  border: 1px solid var(--line);
}

.lang-link {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.lang-link:hover {
  color: var(--text);
  background: var(--card);
}

.site-header {
  padding: 18px 0 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 22px;
}

.brand-logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  padding: 4px;
}

.header-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.header-nav a:hover {
  color: var(--text);
  background: var(--card);
}

/* Hero */
.hero {
  padding: 42px 0 48px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

.badge {
  display: inline-block;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  margin-bottom: 18px;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: 0.02em;
}

.subtitle {
  margin-top: 18px;
  max-width: 680px;
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--muted);
}

.hero-actions {
  margin: 28px 0;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white;
}

.btn-secondary {
  border: 1px solid var(--line);
  color: var(--text);
}

.btn-disabled {
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  cursor: not-allowed;
  border: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
}

.app-coming-soon {
  color: var(--muted);
  font-size: 14px;
  padding: 8px 14px;
  background: var(--card);
  border-radius: 8px;
  border: 1px solid var(--line);
}

.feature-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.feature-list li {
  margin-bottom: 8px;
}

.feature-list strong {
  color: var(--text);
}

/* About Section */
.about-app {
  padding: 48px 0 32px;
}

.section-title {
  text-align: center;
  font-size: clamp(24px, 3vw, 32px);
  margin-bottom: 24px;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.about-content p {
  margin-bottom: 16px;
}

.about-content strong {
  color: var(--text);
}

/* Value Section */
.value {
  padding: 18px 0 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.grid-3 article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.grid-3 h2 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 22px;
}

.grid-3 h2 a {
  color: var(--text);
  text-decoration: none;
}

.grid-3 h2 a:hover {
  color: var(--primary);
}

.grid-3 p {
  margin: 0;
  color: var(--muted);
}

/* CTA Section */
.cta {
  padding: 36px 0 60px;
}

.cta-inner {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(79, 140, 255, 0.22), rgba(103, 213, 181, 0.16));
  border-radius: 24px;
  padding: 36px;
  text-align: center;
}

.cta-inner h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 42px);
}

.cta-inner p {
  margin: 10px auto 22px;
  color: var(--muted);
  max-width: 720px;
}

.cta-contact {
  margin-top: 24px !important;
  font-size: 14px !important;
}

.cta-contact a {
  color: var(--primary-2);
  text-decoration: none;
}

.cta-contact a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 12px;
}

.footer-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  padding: 3px;
}

.footer-desc {
  color: var(--muted);
  font-size: 15px;
  max-width: 500px;
  margin: 0 auto 20px;
  line-height: 1.6;
}

.footer-contact {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.contact-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  transition: all 0.2s ease;
}

.contact-item:hover {
  color: var(--text);
  border-color: var(--primary);
}

.contact-item svg {
  opacity: 0.7;
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 14px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

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

.footer-links .divider {
  color: var(--line);
}

.footer-complaint {
  margin: 16px 0;
  padding: 12px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.complaint-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  margin: 0 0 6px 0;
}

.complaint-info {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.complaint-info .divider {
  margin: 0 8px;
  color: var(--line);
}

.footer-copyright {
  color: var(--muted);
  font-size: 13px;
  opacity: 0.8;
}

/* Privacy Policy Page */
.privacy-page {
  padding: 40px 0 80px;
}

.privacy-page .container {
  max-width: 800px;
}

.privacy-page h1 {
  font-size: clamp(28px, 4vw, 36px);
  margin-bottom: 8px;
  text-align: center;
}

.privacy-page .privacy-date {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}

.privacy-page h2 {
  font-size: 20px;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--text);
}

.privacy-page h3 {
  font-size: 17px;
  margin-top: 20px;
  margin-bottom: 10px;
  color: var(--text);
}

.privacy-page p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 12px;
}

.privacy-page ul,
.privacy-page ol {
  color: var(--muted);
  line-height: 1.8;
  padding-left: 24px;
  margin-bottom: 16px;
}

.privacy-page li {
  margin-bottom: 6px;
}

.privacy-page strong {
  color: var(--text);
}

.privacy-page hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 24px 0;
}

.privacy-page a {
  color: var(--primary);
  text-decoration: none;
}

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

/* Responsive */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 62px;
  }
  
  .header-inner {
    flex-direction: column;
    gap: 12px;
  }
  
  .footer-contact {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 8px;
  }
  
  .footer-links .divider {
    display: none;
  }
}

@media (max-width: 600px) {
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .about-content {
    text-align: left;
  }
}