:root {
  --corise-ink: #141413;
  --corise-ink-secondary: #4A4A46;
  --corise-ink-muted: #73726E;
  --corise-paper: #FBFBFA;
  --corise-bone: #F5F4F0;
  --corise-line: #E3E1DB;
  --corise-amber: #C68A34;
  --corise-forest: #243325;
  --corise-sage-bg: #EEF3ED;
  --corise-sage-border: #CFDEC9;
  --corise-sage-ink: #2B4E2F;
  --corise-ochre-bg: #FBF4DE;
  --corise-ochre-border: #F0E3B6;
  --font-display-en: 'Spectral', Georgia, serif;
  --font-body-en: 'Geist', -apple-system, sans-serif;
  --font-heading-zh: 'Noto Serif SC', 'Songti SC', serif;
  --font-body-zh: 'Noto Sans SC', sans-serif;
  --font-mono: 'Geist Mono', monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--corise-bone);
  color: var(--corise-ink);
  font-family: var(--font-body-en), var(--font-body-zh);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Language Switching Visibility */
body.lang-en .lang-zh { display: none !important; }
body.lang-zh .lang-en { display: none !important; }

/* Top Navigation */
.hq-header {
  position: sticky;
  top: 0;
  background: rgba(251, 251, 250, 0.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--corise-line);
  height: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
  z-index: 100;
}
.hq-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}
.hq-logo {
  font-family: var(--font-display-en);
  font-size: 24px;
  color: var(--corise-ink);
}
.hq-logo .rise {
  color: var(--corise-amber);
  font-style: italic;
}
.hq-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--corise-ink-muted);
  border-left: 1px solid var(--corise-line);
  padding-left: 14px;
}
.hq-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}
.hq-nav a {
  color: var(--corise-ink-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}
.hq-nav a:hover {
  color: var(--corise-ink);
}
.btn-deck {
  background: var(--corise-forest);
  color: #FFF !important;
  font-family: var(--font-body-zh);
  font-size: 13px !important;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 6px;
  transition: opacity 0.2s ease;
}
.btn-deck:hover {
  opacity: 0.9;
}

/* Language Switcher Badge */
.lang-badge {
  display: inline-flex;
  align-items: center;
  background: var(--corise-paper);
  border: 1px solid var(--corise-line);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}
.lang-btn {
  background: transparent;
  border: none;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--corise-ink-muted);
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.lang-btn.active {
  background: var(--corise-bone);
  color: var(--corise-ink);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* Hero Section */
.hero {
  padding: 100px 0 70px;
  border-bottom: 1px solid var(--corise-line);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--corise-amber);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.eyebrow:before {
  content: '';
  width: 32px;
  height: 1.5px;
  background: var(--corise-amber);
}
.hero h1 {
  font-family: var(--font-heading-zh);
  font-size: clamp(38px, 4.8vw, 68px);
  line-height: 1.2;
  color: var(--corise-ink);
  max-width: 1000px;
  letter-spacing: -0.015em;
}
.hero h1 em {
  font-family: var(--font-display-en);
  font-style: italic;
  color: var(--corise-amber);
  font-weight: 400;
}
.hero-lead {
  font-size: 19px;
  line-height: 1.65;
  color: var(--corise-ink-secondary);
  max-width: 800px;
  margin: 24px 0 40px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--corise-forest);
  color: #FFF;
  font-family: var(--font-body-zh);
  font-size: 14px;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(36,51,37,0.15);
}
.btn-primary:hover {
  background: #1B261C;
}
.btn-secondary {
  background: var(--corise-paper);
  color: var(--corise-ink);
  border: 1px solid var(--corise-line);
  font-family: var(--font-body-zh);
  font-size: 14px;
  padding: 14px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s ease;
}
.btn-secondary:hover {
  border-color: var(--corise-ink-secondary);
}

/* Section Styles */
.section {
  padding: 84px 0;
  border-bottom: 1px solid var(--corise-line);
}
.section-header {
  margin-bottom: 48px;
}
.section-title {
  font-family: var(--font-heading-zh);
  font-size: 38px;
  color: var(--corise-ink);
  line-height: 1.3;
  margin-top: 10px;
}
.section-title em {
  font-family: var(--font-display-en);
  color: var(--corise-amber);
  font-style: italic;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 22px;
}
.card {
  background: #FFF;
  border: 1px solid var(--corise-line);
  border-radius: 16px;
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.card-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--corise-amber);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.card h3 {
  font-family: var(--font-heading-zh);
  font-size: 23px;
  color: var(--corise-ink);
  margin-bottom: 10px;
  line-height: 1.35;
}
.card p {
  font-size: 14.5px;
  color: var(--corise-ink-secondary);
  line-height: 1.6;
}

/* Tiers Table */
.tier-box {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.tier-item {
  background: #FFF;
  border: 1px solid var(--corise-line);
  border-radius: 14px;
  padding: 28px 24px;
}
.tier-item.active {
  border-color: var(--corise-sage-border);
  background: var(--corise-sage-bg);
}
.tier-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--corise-sage-ink);
  margin-bottom: 10px;
  display: block;
  font-weight: 600;
}
.tier-item h4 {
  font-family: var(--font-heading-zh);
  font-size: 22px;
  color: var(--corise-ink);
  margin-bottom: 10px;
}
.tier-item p {
  font-size: 14px;
  color: var(--corise-ink-secondary);
  line-height: 1.55;
}

/* Contact Banner */
.contact-banner {
  background: var(--corise-forest);
  border-radius: 20px;
  padding: 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 36px;
  margin: 70px 0;
  color: #FFF;
}
.contact-banner h2 {
  font-family: var(--font-heading-zh);
  font-size: 34px;
  color: #FFF;
  line-height: 1.3;
}
.contact-banner h2 em {
  font-family: var(--font-display-en);
  color: #EED1A2;
  font-style: italic;
}
.contact-banner p {
  color: #D3DFCE;
  font-size: 15px;
  margin-top: 10px;
  max-width: 600px;
}
.contact-banner .btn-contact {
  background: var(--corise-amber);
  color: #FFF;
  font-family: var(--font-body-zh);
  font-size: 14px;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}
.contact-banner .btn-contact:hover {
  opacity: 0.9;
}

/* Footer */
.hq-footer {
  border-top: 1px solid var(--corise-line);
  padding: 40px 0;
  font-size: 13px;
  color: var(--corise-ink-muted);
  font-family: var(--font-mono);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.hq-footer a {
  color: var(--corise-ink);
  text-decoration: none;
}

/* Mobile Navigation & Responsive Overrides */
.hq-mobile-actions {
  display: none;
}
.hq-mobile-drawer {
  display: none;
}

@media (max-width: 860px) {
  .hq-header {
    padding: 0 20px;
    height: 60px;
  }
  .hq-tag {
    display: none;
  }
  .hq-nav {
    display: none;
  }
  .hq-mobile-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hq-menu-btn {
    background: transparent;
    border: 1px solid var(--corise-line);
    border-radius: 6px;
    width: 38px;
    height: 38px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
  }
  .hq-menu-btn:hover, .hq-menu-btn:active {
    background: var(--corise-paper);
    border-color: var(--corise-ink-secondary);
  }
  .menu-bar {
    width: 18px;
    height: 1.5px;
    background: var(--corise-ink);
    transition: all 0.25s ease;
    border-radius: 1px;
  }
  .hq-header.menu-open .menu-bar:nth-child(1) {
    transform: translateY(3.25px) rotate(45deg);
  }
  .hq-header.menu-open .menu-bar:nth-child(2) {
    transform: translateY(-3.25px) rotate(-45deg);
  }
  .hq-mobile-drawer {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 59px;
    left: 0;
    right: 0;
    background: rgba(251, 251, 250, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--corise-line);
    padding: 20px 24px 28px;
    gap: 12px;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.2s ease;
  }
  .hq-header.menu-open .hq-mobile-drawer {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .mob-nav-link {
    font-family: var(--font-body-zh), var(--font-body-en);
    font-size: 15px;
    color: var(--corise-ink);
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 1px solid rgba(227, 225, 219, 0.6);
    transition: color 0.15s ease;
  }
  .mob-btn-cta {
    margin-top: 8px;
    background: var(--corise-forest);
    color: #FFF !important;
    text-align: center;
    padding: 13px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(36,51,37,0.15);
  }
  .container {
    padding: 0 20px;
  }
  .hero {
    padding: 60px 0 44px;
  }
  .section {
    padding: 60px 0;
  }
  .section-title {
    font-size: 28px;
  }
  .contact-banner {
    padding: 36px 24px;
  }
  .contact-banner h2 {
    font-size: 26px;
  }
}