/* ===== 赛博风 · Cyberpunk ===== */
:root {
  --bg: #05060f;
  --bg-grid: rgba(0, 240, 255, .05);
  --text: #d7f9ff;
  --muted: #7d8aa5;
  --card: rgba(10, 14, 34, .85);
  --border: rgba(0, 240, 255, .35);
  --neon: #00f0ff;      /* 青蓝霓虹 */
  --neon2: #ff2ec4;     /* 品红霓虹 */
  --accent: #fcee0a;    /* 赛博黄 */
  --glow: 0 0 6px rgba(0,240,255,.8), 0 0 18px rgba(0,240,255,.35);
}
body.light {
  --bg: #e8ecf8;
  --bg-grid: rgba(255, 46, 196, .06);
  --text: #12142b;
  --muted: #5a6480;
  --card: rgba(255, 255, 255, .9);
  --border: rgba(255, 46, 196, .4);
  --glow: 0 0 6px rgba(255,46,196,.45);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "JetBrains Mono", "SF Mono", Consolas, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", monospace, sans-serif;
  background:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px),
    var(--bg);
  background-size: 34px 34px, 34px 34px, auto;
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}
.scanlines {
  pointer-events: none; position: fixed; inset: 0; z-index: 50;
  background: repeating-linear-gradient(0deg, rgba(255,255,255,.025) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
a { color: inherit; text-decoration: none; }
.site-header {
  max-width: 760px; margin: 0 auto; padding: 20px 16px;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--border);
}
.logo {
  font-size: 20px; font-weight: 800; letter-spacing: 1px; color: var(--neon);
  text-shadow: var(--glow);
}
.logo .cursor { color: var(--neon2); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
nav { display: flex; gap: 18px; align-items: center; }
nav a { color: var(--muted); font-size: 14px; text-transform: uppercase; letter-spacing: 1px; }
nav a.active, nav a:hover { color: var(--neon); text-shadow: var(--glow); }
#theme-toggle {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  padding: 4px 10px; cursor: pointer; font-size: 14px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
main { max-width: 760px; margin: 0 auto; padding: 0 16px 44px; position: relative; }
.hero { padding: 42px 0 38px; }
.hero-kicker { color: var(--neon2); font-size: 12px; letter-spacing: 3px; margin-bottom: 12px; }
.hero h1 {
  font-size: 46px; font-weight: 900; letter-spacing: 4px; color: #fff;
  text-shadow: 0 0 8px rgba(0,240,255,.9), 0 0 26px rgba(0,240,255,.5), 3px 3px 0 var(--neon2);
}
body.light .hero h1 { color: var(--text); text-shadow: 2px 2px 0 var(--neon), -2px -2px 0 rgba(255,46,196,.5); }
.hero-sub { color: var(--muted); font-size: 15px; margin-top: 12px; }
.section-title {
  font-size: 16px; margin: 30px 0 16px; color: var(--neon); letter-spacing: 2px;
  text-shadow: var(--glow);
}
.post-card {
  background: var(--card); border: 1px solid var(--border); padding: 18px 20px; margin-bottom: 14px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: box-shadow .2s, border-color .2s, transform .2s;
}
.post-card:hover {
  border-color: var(--neon); transform: translateX(4px);
  box-shadow: -4px 0 0 var(--neon2), 0 0 18px rgba(0,240,255,.25);
}
.post-card time { color: var(--accent); font-size: 12px; letter-spacing: 1px; }
.post-card h3 { font-size: 18px; margin: 6px 0; }
.post-card h3 a:hover { color: var(--neon); text-shadow: var(--glow); }
.post-card p { color: var(--muted); font-size: 14px; }
.tag {
  display: inline-block; margin-top: 10px; font-size: 11px; letter-spacing: 1px;
  color: var(--neon2); border: 1px solid var(--neon2); padding: 1px 10px;
  text-shadow: 0 0 6px rgba(255,46,196,.6);
}
.about p { color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.about-note { font-size: 12px; opacity: .75; }
article.post { padding-top: 16px; }
article.post h1 { font-size: 25px; margin: 8px 0 16px; color: #fff; text-shadow: 0 0 10px rgba(0,240,255,.6), 2px 2px 0 var(--neon2); }
body.light article.post h1 { color: var(--text); }
article.post time { color: var(--accent); font-size: 12px; letter-spacing: 1px; }
article.post p { margin-bottom: 14px; font-size: 15px; }
.back { color: var(--neon); font-size: 13px; letter-spacing: 1px; }
footer {
  border-top: 1px solid var(--border); color: var(--muted);
  text-align: center; font-size: 11px; letter-spacing: 2px; padding: 22px 16px;
}
@media (max-width: 520px) { .hero h1 { font-size: 34px; } }