@import url('https://fonts.googleapis.com/css2?family=Newsreader:wght@400;500;600;700&family=Roboto:wght@300;400;500;700&display=swap');

/* ===== CSS 变量 ===== */
:root {
  --c-primary: #99ffcc;
  --c-accent: #00ff41;
  --c-dark: #001e3c;
  --c-dark-2: #002a54;
  --c-dark-3: #003366;
  --c-text: #d0f5e8;
  --c-text-muted: #7ab8a0;
  --c-card-bg: rgba(0, 42, 84, 0.75);
  --c-card-border: rgba(153, 255, 204, 0.18);
  --radius-card: 4px;
  --radius-pill: 999px;
  --nav-h: 64px;
  --font-news: 'Newsreader', Georgia, serif;
  --font-body: 'Roboto', system-ui, sans-serif;
  --shadow-card: 0 4px 32px rgba(0, 255, 65, 0.08), 0 1px 6px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 24px rgba(153, 255, 204, 0.22);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-bottom: var(--nav-h);
  font-size: 16px;
  background: var(--c-dark);
  color: var(--c-text);
}
body {
  font-family: var(--font-body);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--c-dark);
  padding-bottom: var(--nav-h);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--transition-base); }
a:hover { color: var(--c-accent); }
ul, ol { list-style: none; }

/* ===== 有机背景画布 ===== */
.bio-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
#cellCanvas {
  width: 100%;
  height: 100%;
  opacity: 0.35;
}

/* ===== 页面层级 ===== */
.site-header,
main,
footer,
.bottom-nav {
  position: relative;
  z-index: 1;
}

/* ===== 顶部页头 ===== */
.site-header {
  display: flex;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--c-card-border);
  background: rgba(0, 30, 60, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-height: 40px;
}
.site-logo {
  height: 36px;
  width: auto;
}
.logo-text {
  font-family: var(--font-news);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.03em;
}
.header-tagline {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-left: auto;
  display: none;
}
@media (min-width: 640px) {
  .header-tagline { display: block; }
}

/* ===== 底部固定导航 ===== */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(0, 20, 48, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--c-card-border);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}
.bottom-nav-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
  overflow-x: auto;
  scrollbar-width: none;
}
.bottom-nav-inner::-webkit-scrollbar { display: none; }
.nav-brand-left {
  flex-shrink: 0;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 8px 0 0;
}
.nav-brand-mark {
  font-family: var(--font-news);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-primary);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.nav-pill-list {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-pill-list::-webkit-scrollbar { display: none; }
.nav-pill-list li a {
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  background: rgba(153, 255, 204, 0.08);
  border: 1px solid rgba(153, 255, 204, 0.2);
  color: var(--c-text);
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  font-family: var(--font-body);
}
.nav-pill-list li a:hover,
.nav-pill-list li a:focus {
  background: rgba(153, 255, 204, 0.2);
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 80px 24px 120px;
  scroll-margin-bottom: var(--nav-h);
}
.hero-bg-text {
  position: absolute;
  right: -2vw;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-news);
  font-size: clamp(8rem, 22vw, 22rem);
  font-weight: 700;
  color: rgba(153, 255, 204, 0.04);
  line-height: 1;
  letter-spacing: -0.06em;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  border: 1px solid rgba(0, 255, 65, 0.4);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  margin-bottom: 24px;
  font-family: var(--font-body);
}
.hero-h1 {
  font-family: var(--font-news);
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.12;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 40px;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  height: 52px;
  padding: 0 32px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: var(--c-dark);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  font-family: var(--font-body);
}
.hero-cta:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
  color: var(--c-dark);
}

/* ===== Hero 有机光球 ===== */
.hero-orbs { position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.18;
  animation: breathe 6s ease-in-out infinite;
}
.orb-1 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, var(--c-primary), transparent 70%);
  top: 10%; right: 15%;
  animation-delay: 0s;
}
.orb-2 {
  width: 260px; height: 260px;
  background: radial-gradient(circle, var(--c-accent), transparent 70%);
  bottom: 20%; right: 30%;
  animation-delay: 2s;
}
.orb-3 {
  width: 200px; height: 200px;
  background: radial-gradient(circle, #3399ff, transparent 70%);
  top: 40%; left: 5%;
  animation-delay: 4s;
}

@keyframes breathe {
  0%, 100% { transform: scale(1) translateY(0); opacity: 0.18; }
  50% { transform: scale(1.15) translateY(-16px); opacity: 0.28; }
}

/* ===== 内容区 + aside ===== */
.content-sections {
  padding: 60px 24px;
  max-width: 1280px;
  margin: 0 auto;
}
.content-with-aside {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media (min-width: 1024px) {
  .content-with-aside {
    grid-template-columns: 1fr 280px;
    gap: 48px;
  }
}

/* ===== 正文内容区 ===== */
.main-content-area {
  min-width: 0;
}

.main-content-area article {
  margin-bottom: 40px;
  padding-top: 8px;
  scroll-margin-bottom: var(--nav-h);
  background: var(--c-card-bg);
  border: 1px solid var(--c-card-border);
  border-radius: var(--radius-card);
  padding: 40px 36px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.main-content-area article:hover {
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: translateY(-2px);
}
.main-content-area h2 {
  font-family: var(--font-news);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.main-content-area h3 {
  font-family: var(--font-news);
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin: 28px 0 12px;
}
.main-content-area p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 16px;
}
.main-content-area ul,
.main-content-area ol {
  padding-left: 20px;
  margin-bottom: 20px;
}
.main-content-area ul { list-style: disc; }
.main-content-area ol { list-style: decimal; }
.main-content-area li {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text);
  margin-bottom: 8px;
}
.main-content-area a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.main-content-area strong {
  color: var(--c-accent);
  font-weight: 600;
}
.main-content-area table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.95rem;
}
.main-content-area th {
  background: rgba(153, 255, 204, 0.1);
  color: var(--c-primary);
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--c-card-border);
}
.main-content-area td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(153, 255, 204, 0.08);
  color: var(--c-text);
}
.main-content-area tr:hover td {
  background: rgba(153, 255, 204, 0.04);
}

/* ===== aside 侧边栏 ===== */
.sidebar {
  position: sticky;
  top: 20px;
  align-self: start;
}
.aside-inner {
  background: var(--c-card-bg);
  border: 1px solid var(--c-card-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.aside-title {
  font-family: var(--font-news);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 4px;
}
.aside-inner > .subtitle,
p.subtitle {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-bottom: 18px;
}
.aside-nav-list {
  list-style: decimal;
  padding-left: 18px;
  margin-bottom: 24px;
}
.aside-nav-list li {
  margin-bottom: 10px;
}
.aside-nav-list li a {
  font-size: 0.9rem;
  color: var(--c-text);
  transition: color var(--transition-base);
  line-height: 1.5;
  display: inline-block;
  min-height: 40px;
  padding: 4px 0;
}
.aside-nav-list li a:hover { color: var(--c-primary); }
.aside-card {
  background: rgba(0, 255, 65, 0.06);
  border: 1px solid rgba(0, 255, 65, 0.2);
  border-radius: var(--radius-card);
  padding: 16px;
  text-align: center;
}
.aside-card-label {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}
.aside-card-value {
  font-family: var(--font-news);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-accent);
}

/* ===== 页脚 ===== */
footer {
  background: rgba(0, 10, 24, 0.95);
  border-top: 1px solid var(--c-card-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.footer-brand-section {
  padding: 64px 24px 40px;
  text-align: center;
  border-bottom: 1px solid var(--c-card-border);
}
.footer-big-brand {
  font-family: var(--font-news);
  font-size: clamp(2.5rem, 8vw, 7rem);
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.85;
}
.footer-desc {
  font-size: 0.95rem;
  color: var(--c-text-muted);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.65;
}
.footer-links-section {
  padding: 48px 24px;
  max-width: 1280px;
  margin: 0 auto;
}
.footer-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}
@media (min-width: 640px) {
  .footer-cols { grid-template-columns: repeat(3, 1fr); }
}
.footer-col-title {
  font-family: var(--font-news);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 4px;
}
.footer-col > .subtitle {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 14px;
}
.footer-col-list li {
  margin-bottom: 6px;
}
.footer-col-list li a {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  transition: color var(--transition-base);
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 4px 0;
  line-height: 1.6;
}
.footer-col-list li a:hover { color: var(--c-primary); }
.footer-col-text {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.65;
}
.footer-bottom-section {
  border-top: 1px solid var(--c-card-border);
  padding: 24px;
  text-align: center;
}
.footer-copy {
  font-size: 0.84rem;
  color: var(--c-text-muted);
  margin-bottom: 6px;
}
.footer-icp {
  font-size: 0.78rem;
  color: rgba(126, 180, 160, 0.6);
}

/* ===== h2 + .subtitle 装饰 ===== */
h2 + .subtitle,
h2 + p.subtitle,
h2 + p.subhead,
h2 + p.desc,
h2 + p.lead {
  margin-top: 0;
  color: var(--c-text-muted);
  font-size: 0.9rem;
}

/* ===== 节区滚动偏移 ===== */
article[id] {
  scroll-margin-top: 20px;
  scroll-margin-bottom: var(--nav-h);
}

/* ===== 动效：交错列表 ===== */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.stagger-item {
  opacity: 0;
  animation: fadeSlideUp 0.55s ease forwards;
}
.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.15s; }
.stagger-item:nth-child(3) { animation-delay: 0.25s; }
.stagger-item:nth-child(4) { animation-delay: 0.35s; }
.stagger-item:nth-child(5) { animation-delay: 0.45s; }
.stagger-item:nth-child(6) { animation-delay: 0.55s; }
.stagger-item:nth-child(7) { animation-delay: 0.65s; }

/* ===== reduced-motion ===== */
@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;
  }
  html { scroll-behavior: auto; }
}

/* ===== 移动端 ===== */
@media (max-width: 640px) {
  .hero-section { padding: 60px 20px 100px; }
  .hero-h1 { font-size: 2.2rem; }
  .hero-bg-text { font-size: 6rem; opacity: 0.03; }
  .content-sections { padding: 40px 16px; }
  .main-content-area article { padding: 28px 20px; }
  .aside-inner { padding: 24px 18px; }
  .footer-brand-section { padding: 48px 20px 32px; }
  .footer-links-section { padding: 36px 20px; }
}