:root {
  --primary: var(--primary-green);
  --accent-gray: var(--primary-green);
  --secondary: var(--secondary-purple);
  --accent-glow: var(--primary-green);
  --bg: var(--nav-bg);
  --primary-dim: var(--primary-green);
  --primary-low: var(--primary-green);
  --card-bg: var(--nav-bg);
  --border-color: var(--nav-border);
  --border: var(--nav-border);
  --primary-hover: var(--primary-green);
  --bg-dark: var(--nav-bg);
}

/* 基础变量与重置 */
:root {
  --nav-bg: hsl(20, 4%, 8%);            /* 暖调深色背景 (高级灰/棕) */
  --nav-border: hsl(20, 4%, 18%);       /* 边框色 */
  --primary-green: hsl(143, 76%, 65%);  /* 品牌高亮色 (提供的色板) */
  --secondary-purple: hsl(243, 60%, 65%); /* 次要装饰色 */
  --text-main: hsl(20, 10%, 92%);       /* 高对比度文字色 */
  --text-muted: hsl(20, 5%, 65%);       /* 低优先级文字色 */
  --nav-height: 56px;
}
body {
  margin: 0;
  padding-top: var(--nav-height); /* 强制规则：防止内容被固定导航遮挡 */
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #121211;
}
/* 导航栏容器 */
.zen_mode {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  z-index: 1000;
  display: flex;
  align-items: center;
}
.pixel_vibe {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
/* 品牌区域 */
.bluePhantom {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 10px;
  flex-shrink: 0;
}
.vortex_alpha {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--primary-green), var(--secondary-purple));
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.kinesis_7 {
  color: var(--text-main);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
/* 菜单项 */
.glitch_fx {
  display: flex;
  height: var(--nav-height);
  margin-left: 40px;
}
.echoChamber {
  display: flex;
  align-items: center;
  padding: 0 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
}
.echoChamber:hover {
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.03);
}
.neonStrobe9 {
  color: var(--primary-green);
  border-bottom-color: var(--primary-green);
}
/* 操作区域 */
.skyDrifter {
  display: flex;
  align-items: center;
  margin-left: auto;
}
.storm_v3 {
  background-color: var(--primary-green);
  color: hsl(143, 80%, 5%); /* 深色文字确保对比度比值 > 4.5:1 */
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid rgba(0, 0, 0, 0.1);
  transition: opacity 0.2s;
  /* 硬朗风格：无圆角 */
  border-radius: 0;
}
.storm_v3:hover {
  opacity: 0.9;
  box-shadow: 0 0 15px rgba(0, 204, 153, 0.2);
}
/* 移动端切换按钮 */
.fluxCapacitor {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.rapid_v2 {
  width: 18px;
  height: 2px;
  background-color: var(--text-main);
}
/* 响应式策略 */
@media (max-width: 960px) {.glitch_fx {
    display: none; /* 移动端隐藏中间菜单，实际项目中可配合 JS 展开 */
  }
.skyDrifter {
    margin-right: 15px;
  }
.fluxCapacitor {
    display: flex;
  }
.kinesis_7 {
    font-size: 12px;
  }}
/* 装饰性细节：线性网格背景感 */
.zen_mode::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
  opacity: 0.5;
}

:root {
    --nav-bg: hsl(20, 4%, 8%);            
    --nav-border: hsl(20, 4%, 18%);       
    --primary-green: hsl(143, 76%, 65%);  
    --secondary-purple: hsl(243, 60%, 65%); 
    --text-main: hsl(20, 10%, 92%);       
    --text-muted: hsl(20, 5%, 65%);       
    --nav-height: 56px;
    }
@media (max-width: 960px) {
  .glitch_fx {
    display: none; 
    }
  
    .skyDrifter {
    margin-right: 15px;
    }
  
    .fluxCapacitor {
    display: flex;
    }
  
    .kinesis_7 {
    font-size: 12px;
    }
}
@media (max-width: 768px) {
  .prism_light {
    flex-direction: column !important;
    text-align: center;
    }
  
    .alphaDelta_9 { padding: 80px 20px; }
}

    
    body {
    margin: 0;
    padding-top: var(--nav-height); 
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: #121211;
    }

    
    .zen_mode {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
    z-index: 1000;
    display: flex;
    align-items: center;
    }

    .pixel_vibe {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    }

    
    .bluePhantom {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 10px;
    flex-shrink: 0;
    }

    .vortex_alpha {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-purple));
    border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .kinesis_7 {
    color: var(--text-main);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    }

    
    .glitch_fx {
    display: flex;
    height: var(--nav-height);
    margin-left: 40px;
    }

    .echoChamber {
    display: flex;
    align-items: center;
    padding: 0 16px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
    }

    .echoChamber:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.03);
    }

    .neonStrobe9 {
    color: var(--primary-green);
    border-bottom-color: var(--primary-green);
    }

    
    .skyDrifter {
    display: flex;
    align-items: center;
    margin-left: auto;
    }

    .storm_v3 {
    background-color: var(--primary-green);
    color: hsl(143, 80%, 5%); 
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: opacity 0.2s;
    
    border-radius: 0;
    }

    .storm_v3:hover {
    opacity: 0.9;
    box-shadow: 0 0 15px rgba(0, 204, 153, 0.2);
    }

    
    .fluxCapacitor {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    }

    .rapid_v2 {
    width: 18px;
    height: 2px;
    background-color: var(--text-main);
    }

    
    
    
    .zen_mode::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    opacity: 0.5;
    }

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

    main {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    }

    
    .alphaDelta_9 {
    padding: 120px 24px 80px;
    text-align: center;
    background: radial-gradient(circle at top right, hsl(25, 30%, 15%), transparent);
    border-bottom: 1px solid var(--border);
    }

    .alphaDelta_9 h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    color: #fff;
    }

    .alphaDelta_9 p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
    }

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

    .quartz_byte {
    background-color: var(--primary);
    color: #000;
    padding: 16px 36px;
    border-radius: 4px;
    font-weight: 700;
    text-decoration: none;
    font-size: 1.1rem;
    transition: transform 0.2s, background-color 0.2s;
    border: none;
    cursor: pointer;
    }

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

    .cyber_mesh {
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--text-muted);
    }

    
    .ironGrip_v {
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    }

    .frost_bite {
    background: var(--surface);
    padding: 40px;
    border: 1px solid var(--border);
    transition: border-color 0.3s;
    }

    .frost_bite:hover {
    border-color: var(--primary);
    }

    .frost_bite h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--primary);
    }

    
    .prism_light {
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 60px;
    }

    .prism_light:nth-child(even) {
    flex-direction: row-reverse;
    }

    .orbit_22 {
    flex: 1;
    }

    .silver_lynx {
    flex: 1;
    position: relative;
    }

    .silver_lynx img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }

    .orbit_22 h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    }

    .sonic_wave {
    margin-top: 30px;
    display: flex;
    gap: 20px;
    }

    .sonic_wave a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid transparent;
    }

    .sonic_wave a:hover {
    border-bottom-color: var(--primary);
    }

    
    footer {
    padding: 60px 24px;
    background: #0a0a0a;
    border-top: 1px solid var(--border);
    text-align: center;
    }

    .nova_core {
    max-width: 1200px;
    margin: 0 auto;
    }

    .goldDust {
    font-weight: 800;
    font-size: 1.2rem;
    margin-bottom: 20px;
    display: block;
    }

    .footer-nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    }

    .footer-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    }

    .footer-nav a:hover {
    color: #fff;
    }

    .shadow_walk {
    color: hsl(24, 5%, 40%);
    font-size: 0.85rem;
    }

@media (max-width: 768px) {
  .alphaDelta_9 h1 { font-size: 2.5rem; }
  
    .pulsar_k2 { grid-template-columns: 1fr; }
  
    .planet_z9 { flex-direction: column-reverse; }
}

    
    .parsec_j { display: none; }

    .light_year {
    display: inline-block;
    background-color: var(--primary);
    color: var(--bg-dark);
    padding: 18px 48px;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
    }

    .light_year:hover {
    background-color: hsl(143, 76%, 55%);
    transform: translateY(-2px);
    }

    
    .meteor_v {
    max-width: 1200px;
    margin: -50px auto 80px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    }

    .spirit_fire {
    background: white;
    padding: 40px;
    border: 1px solid var(--border-color);
    box-shadow: 10px 10px 0px var(--accent-gray);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    }

    .spirit_fire h2 {
    margin-top: 0;
    font-size: 1.5rem;
    border-bottom: 3px solid var(--secondary);
    padding-bottom: 10px;
    margin-bottom: 20px;
    }

    .cosmic_p {
    margin-top: auto;
    color: var(--text-main);
    text-decoration: none;
    font-weight: bold;
    border-bottom: 2px solid var(--primary);
    padding: 5px 0;
    }

    
    .planet_z9 {
    max-width: 1200px;
    margin: 80px auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
    }

    .blackHole_v { flex: 1; min-width: 300px; }

    .hyperSpace { flex: 1; min-width: 300px; }

    .hyperSpace img {
    width: 100%;
    height: auto;
    filter: grayscale(0.2);
    border: 1px solid var(--border-color);
    }

    
    .superNova_9 {
    background-color: hsl(143, 10%, 90%);
    padding: 80px 20px;
    }

    .pulsar_k2 {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    }

    .galaxyRun_x h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--accent-gray);
    text-transform: uppercase;
    }

    .quasar_jet {
    list-style: none;
    padding: 0;
    }

    .quasar_jet li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    }

    .warp_speed {
    margin-bottom: 20px;
    }

    .warp_speed a {
    color: hsl(143, 10%, 80%);
    margin: 0 10px;
    text-decoration: none;
    }

@media (max-width: 768px) {
  
    h2 { font-size: 1.8rem; }
}

    
    .seo-metadata { display: none; }

    
    .seaFoam_v3 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    }

    .riverRun { padding: 80px 0; border-bottom: 1px solid var(--border); }

    
    h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    color: #fff;
    }

    h2 {
    font-size: 2.2rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    }

    h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--primary);
    }

    p { margin-bottom: 1.2rem; color: var(--text-muted); font-size: 1.1rem; }

    .marsh_land { max-width: 900px; margin: 0 auto; }

    .lakeSide_9 {
    margin-top: 4rem;
    border: 1px solid var(--border);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    border-radius: 4px;
    }

    
    .tidal_wave {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    }

    .oceanDeep_v { flex: 1; }

    .oceanDeep_v img {
    width: 100%;
    height: auto;
    border: 1px solid var(--border);
    filter: grayscale(20%);
    transition: filter 0.3s ease;
    }

    .oceanDeep_v img:hover { filter: grayscale(0%); }

    
    .desertRose {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--primary);
    color: #000;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: background 0.2s ease;
    border: none;
    cursor: pointer;
    }

    .desertRose:hover { background-color: var(--primary-hover); }

    
    .swamp_gas {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
    }

    .swamp_gas:hover { border-color: var(--primary); }

@media (max-width: 768px) {
  .mountain_p { grid-template-columns: 1fr; padding: 40px 0; }
  
    h1 { font-size: 1.8rem; }
}

    
    .mountain_p {
    padding: 80px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    }

    .lakeSide_9 img {
    width: 100%;
    border-radius: 4px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border: 1px solid var(--border);
    }

    .sandStorm_v {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
    }

    .oasis_mirage {
    background: var(--surface);
    padding: 24px;
    border: 1px solid var(--border);
    transition: transform 0.2s ease, border-color 0.2s ease;
    }

    .oasis_mirage:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    }

    .oasis_mirage img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    }

    
    .valleyLow {
    list-style: none;
    counter-reset: step-counter;
    }

    .valleyLow li {
    position: relative;
    padding-left: 50px;
    margin-bottom: 24px;
    min-height: 40px;
    }

    .valleyLow li::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--bg);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    }

    
    .hillTop_v2 {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: var(--surface);
    }

    .hillTop_v2 th, .hillTop_v2 td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid var(--border);
    }

    .hillTop_v2 th {
    background: var(--primary-low);
    color: var(--primary);
    }

    kbd {
    background: #333;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
    border: 1px solid #555;
    }

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


    
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

    h2::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    }

    
    .jungleBeat {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
    }

    .treeBark_x {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 2rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
    }

    .treeBark_x:hover {
    border-color: var(--primary-dim);
    transform: translateY(-4px);
    }

    .treeBark_x ul {
    list-style: none;
    padding: 0;
    }

    .treeBark_x li {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: flex-start;
    color: var(--text-muted);
    }

    .treeBark_x li::before {
    content: "→";
    margin-right: 8px;
    color: var(--primary);
    }

    
    .canyonEcho {
    margin: 3rem 0;
    border: 1px solid var(--border);
    background: var(--accent-gray);
    position: relative;
    overflow: hidden;
    }

    .canyonEcho img {
    width: 100%;
    height: auto;
    display: block;
    mix-blend-mode: luminosity;
    transition: mix-blend-mode 0.3s ease;
    }

    .canyonEcho img:hover {
    mix-blend-mode: normal;
    }

    .forestFloor {
    display: inline-block;
    background: var(--primary-dim);
    color: #fff;
    padding: 2px 10px;
    font-size: 0.75rem;
    text-transform: uppercase;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
    }

    .leafNode {
    font-size: 0.85rem;
    color: var(--text-muted);
    }

@media (max-width: 768px) {
  .seaFoam_v3 { padding: 40px 16px; }
  
    .flower_petal { height: 250px; }
}

    .flower_petal {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    margin-bottom: 60px;
    filter: saturate(0.8) contrast(1.1);
    }

    
    .stoneHenge {
    position: relative;
    padding-left: 32px;
    }

    .stoneHenge::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border-color);
    }

    .clay_pot {
    position: relative;
    margin-bottom: 80px;
    }

    .clay_pot::before {
    content: "";
    position: absolute;
    left: -36px;
    top: 10px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 10px var(--accent-glow);
    }

    .rockHard_v {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 24px;
    }

    .grassRoot {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-family: ui-monospace, monospace;
    }

    .lavaFlow {
    background: var(--surface);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: 4px;
    }

    h3:first-child { margin-top: 0; }

    ul {
    list-style: none;
    padding: 0;
    }

    li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 0.95rem;
    }

    li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 0.8rem;
    }


.cc-sec-area.active,
.cc-sec-area.cc-visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}