:root {
  --bg: #05060f;
  --bg-soft: #0a0d1a;
  --fg: #d6dcf0;
  --muted: #7b859f;
  --cyan: #22d3ee;
  --magenta: #f472b6;
  --violet: #818cf8;
  --line: rgba(120, 140, 200, 0.16);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---------- 背景 ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-image:
    linear-gradient(to right, rgba(99, 102, 241, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(99, 102, 241, 0.09) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

.scanline {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.018) 0px,
    rgba(255, 255, 255, 0.018) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0.5;
}

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -2;
  opacity: 0.5;
}
.glow-a {
  width: 460px; height: 460px;
  top: -140px; left: -100px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.35), transparent 70%);
}
.glow-b {
  width: 520px; height: 520px;
  top: 30%; right: -180px;
  background: radial-gradient(circle, rgba(244, 114, 182, 0.28), transparent 70%);
}

/* ---------- 布局 ---------- */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 22px 60px;
}

/* ---------- 顶栏 ---------- */
.site-header {
  max-width: 860px;
  margin: 0 auto;
  padding: 26px 22px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 46px;
}

.logo {
  font-family: var(--mono);
  font-size: 1.02rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: 0.5px;
}
.logo .prompt { color: var(--cyan); }
.logo .brand { color: #fff; font-weight: 600; }
.logo .cursor {
  color: var(--cyan);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.site-header nav { display: flex; gap: 18px; }
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-family: var(--mono);
  transition: color 0.2s, text-shadow 0.2s;
}
.site-header nav a:hover {
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
}

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 26px 0 40px; }

.glitch {
  position: relative;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #fff;
  text-shadow:
    0 0 18px rgba(34, 211, 238, 0.45),
    0 0 50px rgba(129, 140, 248, 0.25);
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0.75;
}
.glitch::before {
  color: var(--cyan);
  animation: glitch-1 2.6s infinite linear alternate-reverse;
  clip-path: inset(0 0 55% 0);
}
.glitch::after {
  color: var(--magenta);
  animation: glitch-2 3.1s infinite linear alternate-reverse;
  clip-path: inset(55% 0 0 0);
}
@keyframes glitch-1 {
  0%, 88%, 100% { transform: translate(0); }
  90% { transform: translate(-3px, -1px); }
  92% { transform: translate(2px, 1px); }
  94% { transform: translate(-1px, 0); }
}
@keyframes glitch-2 {
  0%, 86%, 100% { transform: translate(0); }
  88% { transform: translate(3px, 1px); }
  90% { transform: translate(-2px, -1px); }
  92% { transform: translate(1px, 0); }
}

.hero .sub {
  margin-top: 14px;
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.95rem;
  min-height: 1.6em;
}
.caret { color: var(--cyan); animation: blink 1.1s steps(1) infinite; }

/* ---------- 文章列表 ---------- */
.post-list { display: flex; flex-direction: column; gap: 18px; }

.post-card {
  position: relative;
  display: block;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(15, 20, 38, 0.85), rgba(8, 11, 22, 0.85));
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.post-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(220px circle at var(--mx, 50%) var(--my, 50%),
    rgba(34, 211, 238, 0.12), transparent 60%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}
.post-card:hover {
  border-color: rgba(34, 211, 238, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(34, 211, 238, 0.12);
}
.post-card:hover::after { opacity: 1; }

.meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.tag {
  color: var(--magenta);
  border: 1px solid rgba(244, 114, 182, 0.35);
  border-radius: 999px;
  padding: 0 8px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.post-card h2 {
  font-size: 1.22rem;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

.post-card p {
  color: var(--muted);
  font-size: 0.93rem;
}

.more {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.25s, transform 0.25s;
}
.post-card:hover .more { opacity: 1; transform: translateX(0); }
.more .arrow { display: inline-block; transition: transform 0.25s; }
.post-card:hover .arrow { transform: translateX(4px); }

/* ---------- 文章页 ---------- */
.post { max-width: 760px; margin: 0 auto; }

.post-head { margin-bottom: 30px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.post-head h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.5rem);
  color: #fff;
  letter-spacing: 0.01em;
  line-height: 1.3;
}
.post-head .desc { color: var(--muted); margin-top: 10px; font-family: var(--mono); font-size: 0.9rem; }

.content { color: #c3cbe0; font-size: 1rem; }
.content h1, .content h2, .content h3 { color: #fff; margin: 1.6em 0 0.6em; line-height: 1.35; }
.content h2 { font-size: 1.4rem; border-left: 3px solid var(--cyan); padding-left: 12px; }
.content h3 { font-size: 1.15rem; }
.content p { margin: 0.9em 0; }
.content a { color: var(--cyan); text-decoration: none; border-bottom: 1px dashed rgba(34, 211, 238, 0.5); }
.content a:hover { border-bottom-style: solid; }
.content ul, .content ol { margin: 0.9em 0 0.9em 1.4em; }
.content li { margin: 0.35em 0; }
.content blockquote {
  border-left: 3px solid var(--magenta);
  padding: 6px 16px;
  margin: 1.2em 0;
  color: var(--muted);
  background: rgba(244, 114, 182, 0.05);
  border-radius: 0 8px 8px 0;
}
.content code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(129, 140, 248, 0.14);
  color: #c7d2fe;
  padding: 2px 6px;
  border-radius: 5px;
}
.content pre {
  background: #070a16;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 1.2em 0;
}
.content pre code { background: none; padding: 0; color: #a5b4fc; font-size: 0.86rem; }
.content img { max-width: 100%; border-radius: 10px; }
.content hr { border: none; border-top: 1px solid var(--line); margin: 2em 0; }

.back {
  display: inline-block;
  margin-top: 40px;
  font-family: var(--mono);
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.back:hover { color: var(--cyan); }

/* ---------- 页脚 ---------- */
.site-footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 34px 22px 40px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: #5b6480;
  font-family: var(--mono);
  font-size: 0.78rem;
}

@media (max-width: 560px) {
  .site-header { padding-top: 20px; margin-bottom: 32px; }
  .site-header nav { gap: 12px; }
  .post-card { padding: 18px; }
  .hero { padding: 10px 0 28px; }
}