:root {
  --bg: #041f28;
  --bg-alt: #062a35;
  --bg-card: #083341;
  --gold: #e3c07c;
  --gold-bright: #f2d89b;
  --teal: #4fc3a1;
  --text: #e9f1ee;
  --text-dim: #a9c2bb;
  --border: rgba(227, 192, 124, 0.25);
  --serif: 'Noto Serif TC', 'Noto Serif SC', 'Songti TC', 'PMingLiU', 'SimSun', serif;
  --sans: 'Noto Sans TC', 'Noto Sans SC', 'PingFang TC', 'PingFang SC', 'Microsoft JhengHei', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.container.narrow { max-width: 760px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(4, 31, 40, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 15px;
}

.brand-name {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 1px;
}

.site-nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
}

.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
}

.site-nav a:hover { color: var(--gold-bright); }

.site-nav .nav-cta {
  color: var(--gold);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 14px;
}

.lang-switcher {
  display: flex;
  gap: 4px;
}

.lang-switcher a {
  padding: 3px 10px;
  border-radius: 6px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  border: 1px solid transparent;
}

.lang-switcher a.active {
  color: var(--gold);
  border-color: var(--border);
}

/* Hero */
.hero {
  position: relative;
  padding: 120px 0 100px;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(79, 195, 161, 0.18), transparent),
    radial-gradient(ellipse 60% 50% at 50% 110%, rgba(227, 192, 124, 0.12), transparent),
    var(--bg);
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.5;
}

.hero-orgs {
  color: var(--teal);
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-movement {
  color: var(--text-dim);
  margin-top: 4px;
  letter-spacing: 1px;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(40px, 7vw, 68px);
  color: var(--gold-bright);
  margin: 24px 0;
  letter-spacing: 4px;
  text-shadow: 0 0 40px rgba(227, 192, 124, 0.35);
}

.hero-tagline {
  font-size: clamp(17px, 2.4vw, 21px);
  color: var(--text);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 13px 32px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 16px;
  letter-spacing: 1px;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), #c9a45c);
  color: #1c1405;
  font-weight: 700;
  box-shadow: 0 4px 24px rgba(227, 192, 124, 0.35);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 30px rgba(227, 192, 124, 0.5); }

.btn-outline {
  border: 1px solid var(--gold);
  color: var(--gold);
}

.btn-outline:hover { background: rgba(227, 192, 124, 0.12); }

/* Sections */
.section { padding: 88px 0; }

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid rgba(227, 192, 124, 0.12);
  border-bottom: 1px solid rgba(227, 192, 124, 0.12);
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(28px, 4.4vw, 40px);
  color: var(--gold-bright);
  text-align: center;
  letter-spacing: 3px;
  margin-bottom: 16px;
}

.section-title::after {
  content: '';
  display: block;
  width: 64px;
  height: 2px;
  margin: 18px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.section-subtitle {
  text-align: center;
  color: var(--teal);
  letter-spacing: 2px;
  margin-bottom: 40px;
}

.section-note {
  text-align: center;
  color: var(--gold);
  font-size: 17px;
  margin-top: 28px;
}

.lead { font-size: 18px; color: var(--text); margin-bottom: 8px; }

/* Cards */
.card-grid {
  display: grid;
  gap: 22px;
  margin-top: 44px;
}

.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 24px;
  transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.card-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  color: var(--gold);
  font-family: var(--serif);
  font-weight: 700;
  margin-bottom: 14px;
}

.principle-card h3 {
  font-family: var(--serif);
  color: var(--gold-bright);
  font-size: 21px;
  letter-spacing: 1px;
  margin-bottom: 2px;
}

.principle-alt {
  color: var(--teal);
  font-size: 14px;
  margin-bottom: 10px;
}

/* Choice rows */
.choice-list {
  max-width: 820px;
  margin: 44px auto 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.choice-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 18px 28px;
  font-size: 17px;
}

.choice-a { color: var(--text-dim); }

.choice-versus {
  color: var(--teal);
  font-size: 14px;
  border: 1px solid rgba(79, 195, 161, 0.4);
  border-radius: 999px;
  padding: 1px 12px;
}

.choice-b { color: var(--gold-bright); font-weight: 600; }

/* Feature lists */
.feature-list {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-list li {
  position: relative;
  padding-left: 34px;
  font-size: 17px;
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-bright), var(--gold));
  box-shadow: 0 0 10px rgba(227, 192, 124, 0.6);
}

.feature-list.check li::before {
  content: '✓';
  background: none;
  box-shadow: none;
  color: var(--teal);
  top: 0;
  left: 0;
  font-size: 19px;
  font-weight: 700;
}

.feature-list.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

/* Join */
.join {
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, rgba(227, 192, 124, 0.1), transparent),
    var(--bg);
}

.step-card { text-align: center; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), #c9a45c);
  color: #1c1405;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 14px;
}

.step-card strong { color: var(--gold-bright); }

.join-cta { text-align: center; margin-top: 44px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 44px 0;
  text-align: center;
  color: var(--text-dim);
}

.footer-orgs { color: var(--gold); font-size: 16px; letter-spacing: 1px; }
.footer-movement { margin-top: 6px; font-size: 14px; }
.footer-copy { margin-top: 16px; font-size: 13px; opacity: 0.7; }

/* Responsive */
@media (max-width: 900px) {
  .card-grid.four { grid-template-columns: repeat(2, 1fr); }
  .card-grid.three { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .header-inner { flex-wrap: wrap; gap: 10px; }
  .site-nav { order: 3; width: 100%; justify-content: center; flex-wrap: wrap; }
  .lang-switcher { margin-left: auto; }
  .card-grid.four { grid-template-columns: 1fr; }
  .feature-list.two-col { grid-template-columns: 1fr; }
  .choice-row { border-radius: 18px; }
  .hero { padding: 80px 0 70px; }
}