/* ── Badge ── */
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(30, 64, 175, 0.10);
  border: 1px solid rgba(30, 64, 175, 0.20);
  border-radius: 20px;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.2s forwards;
}

.hero-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  animation: pulse 2s ease-in-out infinite;
}

/* ── Hero 标题 ── */
.hero h1 {
  font-size: clamp(40px, 8vw, 80px);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.05;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.7s var(--ease-out) 0.35s forwards;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #1e40af, #ff00ff, #1e40af);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .oner-r {
  color: var(--text-primary, #fff);
}

.hero p {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.6;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.7s var(--ease-out) 0.5s forwards;
}

.hero-cta {
  display: flex; gap: 16px; align-items: center;
  opacity: 0;
  animation: fadeUp 0.7s var(--ease-out) 0.65s forwards;
}

/* ── 按钮 ── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 36px;
  font-size: 15px;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #1e40af, #2563eb);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(30, 64, 175, 0.30);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(30, 64, 175, 0.45), 0 0 30px rgba(255, 0, 255, 0.08);
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 36px;
  font-size: 15px;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-weight: 600;
  border: 1px solid rgba(30, 30, 48, 0.8);
  border-radius: var(--radius);
  background: rgba(15, 17, 25, 0.6);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s var(--ease-out), transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.btn-secondary:hover {
  border-color: rgba(30, 64, 175, 0.30);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(30, 64, 175, 0.10);
}

.btn-secondary:active { transform: translateY(0); }

/* ── 卡片 ── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card {
  background: rgba(15, 17, 25, 0.6);
  border: 1px solid rgba(30, 30, 48, 0.8);
  border-radius: 16px;
  padding: 28px;
  backdrop-filter: blur(8px);
  transition: transform 0.25s var(--ease-out), border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(30, 64, 175, 0.25);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(30, 64, 175, 0.10);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.card:nth-child(even) .card-icon {
  background: rgba(255, 0, 255, 0.08);
}

.card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ── 滚动提示 ── */
.scroll-hint {
  position: fixed; bottom: 32px;
  left: 0; right: 0;
  z-index: 50;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: #ffffff;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
  pointer-events: none;
}

.scroll-hint.visible {
  opacity: 1;
}

.scroll-hint-inner {
  opacity: calc(var(--pulse, 0.7) * 0.6);
}

.scroll-hint-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(45deg);
  animation: scrollBounce 3s ease-in-out infinite;
  opacity: calc(var(--pulse, 0.7) * 0.6);
}

/* ── 语言切换 ── */
.lang-toggle {
  flex-shrink: 0;
  width: 40px; height: 28px;
  font-size: 12px; font-weight: 600;
  font-family: "Inter", system-ui, sans-serif;
  letter-spacing: 0.5px;
  color: var(--text-tertiary);
  background: rgba(10, 10, 15, 0.6);
  border: 1px solid rgba(30, 30, 48, 0.5);
  border-radius: 6px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: color 0.2s, border-color 0.2s;
}

.lang-toggle:hover {
  color: var(--text);
  border-color: rgba(30, 64, 175, 0.3);
}

/* ── 引用块 ── */
.emphasis-block {
  padding: 20px 24px 20px 28px;
  margin: 20px 0;
  border-left: 2px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: clamp(15px, 1.8vw, 20px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  font-style: italic;
}

/* ── 核心概念三循环 ── */
.cycle-flow {
  display: flex;
  gap: 16px;
  margin: 32px 0;
  align-items: stretch;
}

.cycle-item {
  flex: 1;
  background: rgba(15, 17, 25, 0.6);
  border: 1px solid rgba(30, 30, 48, 0.8);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: transform 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.cycle-item:hover {
  transform: translateY(-4px);
  border-color: rgba(30, 64, 175, 0.25);
}

.cycle-number {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--primary-dim);
  border: 1px solid rgba(30, 100, 255, 0.2);
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.cycle-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.cycle-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.cycle-connector {
  display: flex;
  align-items: center;
  color: rgba(255,255,255,0.1);
  font-size: 20px;
}

/* ── 分发网格（从内联移入） ── */
.distrib-grid {
  display: flex; justify-content: center; gap: 24px;
  flex-wrap: wrap; max-width: 500px; margin: 0 auto;
}
.distrib-link {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: rgba(255,255,255,0.25); text-decoration: none;
  transition: color 0.25s, transform 0.25s;
  padding: 8px;
}
.distrib-link:hover { color: #1e96ff; transform: translateY(-2px); }
.distrib-label { font-size: 10px; font-weight: 400; letter-spacing: 0.3px; }

/* ── 邮箱 ── */
.email-box {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 20px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  transition: border-color 0.25s, background 0.25s;
}
.email-box:hover { border-color: rgba(255,255,255,0.12); background: rgba(255,255,255,0.02); }
.email-link {
  color: rgba(255,255,255,0.3); text-decoration: none;
  font-size: 13px; font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: 0.3px;
  transition: color 0.25s;
}
.email-link:hover { color: rgba(255,255,255,0.6); }

/* ── 代码块 ── */
.code-block {
  position: relative;
  background: rgba(10, 10, 15, 0.8);
  border: 1px solid rgba(30, 30, 48, 0.6);
  border-radius: var(--radius);
  padding: 24px;
  overflow-x: auto;
  margin: 16px 0;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(255,255,255,0.7);
  white-space: pre;
  tab-size: 2;
}
.code-copy {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(30, 100, 255, 0.15);
  color: #1e96ff;
  border: 1px solid rgba(30, 100, 255, 0.2);
  cursor: pointer;
  font-family: 'Inter', system-ui, sans-serif;
  transition: background 0.2s, color 0.2s;
  line-height: 1.4;
}
.code-copy:hover {
  background: rgba(30, 100, 255, 0.25);
  color: #4FC3F7;
}

/* ── 宣言文章 ── */
.manifesto-article {
  max-width: 700px;
  margin: 0 auto;
}

.manifesto-article p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 20px;
  text-indent: 0;
}

.manifesto-article .manifesto-quote {
  border-left: 2px solid rgba(255, 255, 255, 0.1);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: italic;
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  line-height: 1.8;
}

.manifesto-article .manifesto-sep {
  text-align: center;
  color: rgba(255,255,255,0.08);
  font-size: 20px;
  margin: 32px 0;
  letter-spacing: 8px;
}

.manifesto-footer {
  text-align: center;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(30, 30, 48, 0.4);
  font-size: 14px;
  color: var(--text-tertiary);
  letter-spacing: 1px;
}