/* =========================================================
   【风格 03 · 量子链网】全局设计变量与通用样式库
   近黑深空 #060913 | 唯一强调色 荧光绿 #A3E635 | 白色正文
   ========================================================= */
:root {
  --bg-space: #060913;
  --bg-card: rgba(10, 15, 28, 0.75);
  --bg-card-hover: rgba(15, 23, 42, 0.88);
  --neon-green: #A3E635;
  --neon-green-glow: rgba(163, 230, 53, 0.35);
  --neon-green-subtle: rgba(163, 230, 53, 0.08);
  --border-quantum: rgba(163, 230, 53, 0.18);
  --border-quantum-hover: rgba(163, 230, 53, 0.6);
  --text-white: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dark: #060913;
  --font-title: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: 'Space Grotesk', -apple-system, BlinkMacSystemFont, monospace, sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  --shadow-quantum: 0 0 25px -4px rgba(163, 230, 53, 0.45);
  --shadow-card: 0 12px 36px -10px rgba(0, 0, 0, 0.7);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-space);
  color: var(--text-white);
}

:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 3px;
}

section[id],
div[id],
h1[id],
h2[id],
h3[id],
main[id] {
  scroll-margin-top: 88px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--neon-green);
  color: var(--text-dark);
  padding: 10px 18px;
  font-weight: 800;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top 0.2s ease;
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
  outline: 3px solid #ffffff;
}

body {
  font-family: var(--font-title);
  background-color: var(--bg-space);
  color: var(--text-white);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(163, 230, 53, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 35%, rgba(163, 230, 53, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.04) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 90px 0;
  position: relative;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--neon-green-subtle);
  border: 1px solid var(--border-quantum);
  color: var(--neon-green);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 18px;
  box-shadow: 0 0 15px rgba(163, 230, 53, 0.12);
}

.section-tag .dot {
  width: 7px;
  height: 7px;
  background-color: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-green);
}

.section-title {
  font-family: var(--font-title);
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 18px;
  color: var(--text-white);
  letter-spacing: -0.5px;
}

.neon-text {
  color: var(--neon-green);
  text-shadow: 0 0 20px rgba(163, 230, 53, 0.5);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 55px auto;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  min-height: 50px;
  font-family: var(--font-title);
}

.btn-primary {
  background: var(--neon-green);
  color: var(--text-dark);
  box-shadow: var(--shadow-quantum);
  border: 1px solid var(--neon-green);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(163, 230, 53, 0.7);
  background: #bbf758;
  color: var(--text-dark);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  border: 1px solid var(--border-quantum);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(163, 230, 53, 0.1);
  border-color: var(--neon-green);
  color: var(--neon-green);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(163, 230, 53, 0.25);
}

.btn-block {
  width: 100%;
}

/* 导航 */
.header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(6, 9, 19, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
  border-bottom: 1px solid rgba(163, 230, 53, 0.12);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text-white);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--neon-green);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dark);
  box-shadow: 0 0 18px rgba(163, 230, 53, 0.6);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
}

.nav-link:hover, .nav-link.active {
  color: var(--neon-green);
  text-shadow: 0 0 10px rgba(163, 230, 53, 0.5);
}

.header-cta {
  padding: 10px 22px;
  font-size: 0.92rem;
  min-height: 42px;
  border-radius: var(--radius-sm);
}

/* 页脚 */
.footer {
  background: #04060c;
  border-top: 1px solid var(--border-quantum);
  padding: 48px 0 36px 0;
  margin-top: 80px;
  position: relative;
  z-index: 10;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
}

.footer-nav a:hover {
  color: var(--neon-green);
  background: rgba(163, 230, 53, 0.08);
  text-shadow: 0 0 8px rgba(163, 230, 53, 0.4);
}

.footer-copy {
  font-size: 0.85rem;
  color: #94A3B8;
}

/* 子页面框架 */
.page-header {
  padding: 80px 0 40px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-quantum);
  background: rgba(10, 15, 28, 0.5);
  margin-bottom: 50px;
}

.page-title {
  font-size: 2.6rem;
  font-weight: 900;
  margin-bottom: 14px;
}

.page-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.content-box {
  background: var(--bg-card);
  border: 1px solid var(--border-quantum);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 60px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.content-box h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-white);
  margin: 36px 0 16px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.content-box h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--neon-green);
  margin: 24px 0 12px 0;
}

.content-box p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.content-box ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.content-box ul li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.notice-box {
  background: rgba(163, 230, 53, 0.08);
  border-left: 4px solid var(--neon-green);
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
}

.notice-box p {
  margin-bottom: 0;
  color: var(--text-white);
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .nav-links {
    display: none;
  }
  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }
  .content-box {
    padding: 24px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}