@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@700&display=swap');

/* ========== 设计令牌 ========== */
:root {
  --c-primary: #99ffcc;
  --c-accent:  #00ff41;
  --c-dark:    #001e3c;
  --c-dark2:   #002a55;
  --c-dark3:   #003a70;
  --c-text:    #e8fff4;
  --c-muted:   #7ab8a0;
  --c-border:  rgba(153,255,204,0.18);
  --c-card-bg: rgba(0,42,85,0.85);
  --c-card-line: #00ff41;
  --nav-w:     240px;
  --radius:    4px;
  --font-head: 'Space Grotesk', 'Arial Black', system-ui, sans-serif;
  --font-body: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ========== 重置 & 基础 ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background: var(--c-dark);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ========== 布局根结构 ========== */
/* sidenav + page-body 并排 */
.sidenav {
  position: fixed;
  top: 0; left: 0;
  width: var(--nav-w);
  height: 100vh;
  background: rgba(0,20,50,0.97);
  border-right: 1.5px solid var(--c-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  transition: transform var(--transition);
}

.page-body {
  margin-left: var(--nav-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== 品牌区 ========== */
.sidenav-brand {
  padding: 1.5rem 1.2rem 1rem;
  border-bottom: 1px solid var(--c-border);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.brand-name {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* ========== 侧栏导航 ========== */
.sidenav nav {
  flex: 1;
  padding: 1rem 0;
}

.sidenav nav ul {
  list-style: none;
}

.sidenav nav ul li {
  border-bottom: 1px solid var(--c-border);
}

.sidenav nav ul li a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.2rem;
  color: var(--c-text);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
  transition: background var(--transition), color var(--transition);
  min-height: 44px;
}

.sidenav nav ul li a:hover,
.sidenav nav ul li a:focus {
  background: rgba(153,255,204,0.08);
  color: var(--c-primary);
  outline: none;
}

.nav-icon {
  font-style: normal;
  font-size: 1rem;
  color: var(--c-accent);
  flex-shrink: 0;
}

/* ========== 搜索框 ========== */
.nav-search {
  padding: 1rem 1.2rem 1.5rem;
  border-top: 1px solid var(--c-border);
}

.nav-search form {
  display: flex;
  gap: 0;
}

.nav-search input {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--c-border);
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 0.8rem;
  padding: 0.5rem 0.7rem;
  min-height: 40px;
  outline: none;
  transition: border-color var(--transition);
}

.nav-search input:focus {
  border-color: var(--c-accent);
}

.nav-search input::placeholder {
  color: var(--c-muted);
}

.nav-search button {
  background: var(--c-accent);
  border: 1.5px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--c-dark);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  min-height: 40px;
  min-width: 40px;
  transition: background var(--transition);
}

.nav-search button:hover {
  background: var(--c-primary);
}

/* ========== 移动端顶栏 ========== */
.mobile-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1rem;
  background: rgba(0,20,50,0.97);
  border-bottom: 1.5px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 90;
}

.brand-name-sm {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-primary);
  text-decoration: none;
}

.nav-toggle {
  background: none;
  border: 1.5px solid var(--c-border);
  color: var(--c-primary);
  font-size: 1.2rem;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 40px;
  min-width: 40px;
  transition: border-color var(--transition);
}

.nav-toggle:hover {
  border-color: var(--c-accent);
}

/* ========== HERO（首页专用）========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 20% 50%, rgba(0,255,65,0.07) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(153,255,204,0.05) 0%, transparent 50%),
              var(--c-dark);
  padding: 2rem 2.5rem;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
}

.hero-badge {
  background: rgba(0,255,65,0.12);
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.7rem;
  border-radius: 2px;
  letter-spacing: 0.08em;
  animation: badge-breathe 4s ease-in-out infinite;
}

.hero-badge:nth-child(2) { animation-delay: 0.4s; }
.hero-badge:nth-child(3) { animation-delay: 0.8s; }
.hero-badge:nth-child(4) { animation-delay: 1.2s; }
.hero-badge:nth-child(5) { animation-delay: 1.6s; }

@keyframes badge-breathe {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.04); }
}

.hero-h1 {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  color: var(--c-primary);
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
}

.hero-sub {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--c-muted);
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--c-accent);
  color: var(--c-dark);
  font-weight: 700;
  font-family: var(--font-head);
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius);
  text-decoration: none;
  min-height: 44px;
  border-bottom: 3px solid rgba(0,0,0,0.3);
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--c-primary);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--c-primary);
  font-weight: 700;
  font-family: var(--font-head);
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius);
  text-decoration: none;
  min-height: 44px;
  border: 1.5px solid var(--c-border);
  transition: border-color var(--transition), color var(--transition);
}

.btn-secondary:hover {
  border-color: var(--c-primary);
  color: #fff;
}

/* ========== Hero 有机装饰球 ========== */
.hero-orb {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 480px;
  height: 480px;
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
}

.orb-svg {
  width: 100%;
  height: 100%;
  filter: blur(2px);
}

/* ========== 小Hero（非首页页头） ========== */
.page-hero-mini,
.about-hero,
.privacy-hero,
.entry-hero-band,
.tag-hero-mini {
  padding: 2.5rem 2.5rem 2rem;
  background: linear-gradient(135deg, rgba(0,255,65,0.04) 0%, transparent 70%);
  border-bottom: 1.5px solid var(--c-border);
  position: relative;
}

.about-h1,
.entry-h1,
.page-h1 {
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-primary);
  letter-spacing: -0.02em;
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
}

.page-date, .entry-date {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--c-muted);
  margin-right: 1rem;
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
  margin-top: 0.5rem;
}

.entry-cat-badge {
  background: rgba(0,255,65,0.1);
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  text-decoration: none;
  transition: background var(--transition);
}
.entry-cat-badge:hover { background: rgba(0,255,65,0.2); }

.about-lead {
  font-size: 1rem;
  color: var(--c-muted);
  margin-top: 0.7rem;
  max-width: 600px;
  line-height: 1.65;
}

.tag-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.12em;
  margin-bottom: 0.3rem;
}

/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: var(--c-muted);
  margin-bottom: 0.6rem;
}

.breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color var(--transition);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.breadcrumb a:hover { color: var(--c-primary); }

/* ========== main 正文区 ========== */
main {
  flex: 1;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
}

/* 正文 + 侧栏 */
.content-section {
  display: block;
}

.content-section.has-aside {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2.5rem;
  align-items: start;
}

.page-content {
  min-width: 0;
}

/* ========== 侧边栏 ========== */
.content-aside {
  position: sticky;
  top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.aside-block {
  background: var(--c-card-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  border-bottom: 3px solid var(--c-card-line);
}

.aside-title {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 0.5rem;
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.8rem;
}

.sidebar-link {
  display: block;
  color: var(--c-text);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.45rem 0.5rem;
  border-radius: 2px;
  transition: background var(--transition), color var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.sidebar-link:hover {
  background: rgba(153,255,204,0.08);
  color: var(--c-primary);
}

/* ========== prose 正文排版 ========== */
.prose {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
}

.prose h2 {
  font-family: var(--font-head);
  font-size: 1.35rem;
  color: var(--c-primary);
  margin: 2rem 0 0.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.prose h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--c-primary);
  margin: 1.5rem 0 0.4rem;
  font-weight: 700;
}

.prose hr {
  border: none;
  border-top: 1.5px solid var(--c-border);
  margin: 0.6rem 0 1.2rem;
}

.prose p { margin-bottom: 1rem; }
.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.prose li { margin-bottom: 0.35rem; }
.prose a { color: var(--c-accent); text-decoration: underline; }
.prose a:hover { color: var(--c-primary); }
.prose strong { color: var(--c-primary); }
.prose blockquote {
  border-left: 3px solid var(--c-accent);
  padding-left: 1rem;
  color: var(--c-muted);
  margin: 1.2rem 0;
}

/* ========== Section 标题块 ========== */
.section-block {
  margin-top: 2.5rem;
}

.section-block h2 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.section-block hr {
  border: none;
  border-top: 2px solid var(--c-accent);
  margin-bottom: 1.4rem;
  width: 60px;
}

/* ========== 卡片网格 ========== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
}

.cell-card {
  background: var(--c-card-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  border-bottom: 3px solid var(--c-card-line);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

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

.cell-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  padding: 1.2rem;
  gap: 0.6rem;
}

.cell-card-body {
  flex: 1;
}

.cell-card-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.cell-card-desc {
  font-size: 0.84rem;
  color: var(--c-muted);
  line-height: 1.55;
}

.cell-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-date {
  font-size: 0.76rem;
  color: var(--c-muted);
}

.cell-card-arrow {
  color: var(--c-accent);
  font-size: 1rem;
  font-weight: 700;
  transition: transform var(--transition);
}

.cell-card:hover .cell-card-arrow {
  transform: translateX(4px);
}

/* ========== 快速链接网格 ========== */
.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.8rem;
}

.quick-link {
  display: flex;
  align-items: center;
  background: rgba(0,255,65,0.06);
  border: 1.5px solid var(--c-border);
  border-bottom: 3px solid var(--c-accent);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: var(--c-text);
  font-size: 0.9rem;
  transition: background var(--transition), border-color var(--transition);
  min-height: 44px;
}

.quick-link strong {
  color: var(--c-primary);
  font-weight: 700;
}

.quick-link:hover {
  background: rgba(0,255,65,0.12);
  border-color: var(--c-primary);
}

/* ========== 标签云 ========== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.tag-cloud-sm {
  margin-top: 1rem;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  background: rgba(153,255,204,0.08);
  border: 1px solid var(--c-border);
  color: var(--c-primary);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: 2px;
  text-decoration: none;
  min-height: 40px;
  transition: background var(--transition), border-color var(--transition);
}

.tag-pill:hover {
  background: rgba(0,255,65,0.15);
  border-color: var(--c-accent);
}

/* ========== 英雄图 ========== */
.entry-hero-img-wrap {
  margin-top: 1.2rem;
}

.entry-hero-img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

/* ========== HR 标题装饰（全局） ========== */
h2 + hr {
  border: none;
  border-top: 2px solid var(--c-accent);
  margin: 0.4rem 0 1.2rem;
  width: 60px;
}

h3 + hr {
  border: none;
  border-top: 1px solid var(--c-border);
  margin: 0.3rem 0 1rem;
}

/* ========== 页脚 ========== */
.site-footer {
  background: rgba(0,10,28,0.98);
  border-top: 2px solid var(--c-border);
  padding: 3rem 2.5rem 1.5rem;
  margin-top: auto;
}

.footer-brand-row {
  margin-bottom: 2rem;
}

.footer-brand {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: -0.04em;
  line-height: 1;
  opacity: 0.15;
  pointer-events: none;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col strong {
  font-family: var(--font-head);
  font-size: 0.82rem;
  color: var(--c-accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
  font-weight: 700;
}

.footer-col a {
  color: var(--c-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--transition);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.footer-col a:hover { color: var(--c-primary); }

.footer-note {
  font-size: 0.82rem;
  color: var(--c-muted);
  line-height: 1.55;
}

.footer-nav-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  border-top: 1px solid var(--c-border);
  padding-top: 1.2rem;
  margin-bottom: 1rem;
}

.footer-nav-row a {
  color: var(--c-muted);
  text-decoration: none;
  font-size: 0.82rem;
  transition: color var(--transition);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.footer-nav-row a:hover { color: var(--c-primary); }

.footer-copy {
  text-align: center;
  font-size: 0.78rem;
  color: var(--c-muted);
  padding-top: 0.5rem;
}

/* ========== 生物有机背景纹理 ========== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 600px 400px at 10% 80%, rgba(0,255,65,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 400px 600px at 90% 20%, rgba(153,255,204,0.03) 0%, transparent 70%);
}

/* ========== Scroll Reveal 动效 ========== */
.reveal-section {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease calc(var(--i, 0) * 0.08s),
              transform 0.5s ease calc(var(--i, 0) * 0.08s);
}

.reveal-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal-section, .reveal-item {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .hero-badge { animation: none !important; }
  .orb-svg * { animation: none !important; }
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .footer-cols {
    grid-template-columns: repeat(2, 1fr);
  }
  .content-section.has-aside {
    grid-template-columns: 1fr 220px;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  :root { --nav-w: 0px; }

  .sidenav {
    transform: translateX(-260px);
    width: 260px;
  }

  .sidenav.is-open {
    transform: translateX(0);
  }

  .page-body {
    margin-left: 0;
  }

  .mobile-topbar {
    display: flex;
  }

  .hero {
    min-height: 100vh;
    padding: 5rem 1.2rem 2rem;
    align-items: flex-start;
    padding-top: 6rem;
  }

  .hero-orb {
    display: none;
  }

  .hero-h1 {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
  }

  .page-hero-mini,
  .about-hero,
  .privacy-hero,
  .entry-hero-band,
  .tag-hero-mini {
    padding: 1.5rem 1.2rem 1.2rem;
  }

  .wrap {
    padding: 1.5rem 1rem 2rem;
  }

  .content-section.has-aside {
    grid-template-columns: 1fr;
  }

  .content-aside {
    position: static;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }

  .quick-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

  .site-footer {
    padding: 2rem 1.2rem 1.2rem;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .quick-links-grid {
    grid-template-columns: 1fr;
  }

  .footer-cols {
    grid-template-columns: 1fr;
  }

  .footer-nav-row {
    flex-direction: column;
    gap: 0.3rem;
  }
}