:root {
  --bg: #eef0f3;
  --bg-2: #f9fafb;
  --panel: rgba(255, 255, 255, 0.5);
  --text: #101114;
  --muted: #6b7280;
  --accent: #0a84ff;
  --accent-2: #5e5ce6;
  --line: rgba(0, 0, 0, 0.08);
  --shadow: 0 18px 50px rgba(12, 15, 25, 0.1);
  --shadow-soft: 0 8px 18px rgba(0, 0, 0, 0.06);
  --glow: 0 0 40px rgba(10,132,255,0.15);
  --font-sans: "LXGW WenKai", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "LXGW WenKai", "Songti SC", "STSong", "Times New Roman", serif;
  --font-mono: "LXGW WenKai", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

@font-face {
  font-family: "LXGW WenKai";
  src: url("../assets/fonts/lxgw/LXGWWenKai-Light.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LXGW WenKai";
  src: url("../assets/fonts/lxgw/LXGWWenKai-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LXGW WenKai";
  src: url("../assets/fonts/lxgw/LXGWWenKai-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(10,132,255,0.10), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  background-attachment: fixed;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

body {
  overscroll-behavior-y: none;
}

.bg {
  position: fixed;
  inset: 0 0 auto 0;
  height: 60vh;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.bg::before,
.bg::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(30px);
  opacity: 0.45;
}

.bg::before {
  left: -12%;
  top: 10%;
  background: radial-gradient(circle, rgba(10,132,255,0.28), transparent 62%);
  animation: drift 14s ease-in-out infinite;
}

.bg::after {
  right: -12%;
  top: 16%;
  background: radial-gradient(circle, rgba(10,132,255,0.22), transparent 62%);
  animation: drift 16s ease-in-out infinite reverse;
}

.blob { display: none; }

.grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='90' height='90'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/></filter><rect width='90' height='90' filter='url(%23n)' opacity='0.045'/></svg>");
  mix-blend-mode: multiply;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(6px) saturate(1.05);
  background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(245,246,247,0.7));
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 8px 30px rgba(15,23,42,0.08);
}


.brand {
  font-weight: 600;
  letter-spacing: 0.6px;
  font-family: var(--font-serif);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
}

.nav {
  display: flex;
  gap: 10px;
}

.nav-link {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.85);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: none;
  font-family: var(--font-sans);
}

.nav-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(0,0,0,0.12);
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(10,132,255,0.18), rgba(94,92,230,0.18));
  border-color: rgba(10,132,255,0.35);
  color: #0b2b5d;
  box-shadow: var(--glow);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 20px 70px;
  position: relative;
  z-index: 1;
}

.view { display: none; }
.view.active { display: block; }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 18px;
}


.search {
  margin-left: auto;
}

.search input {
  width: 240px;
  max-width: 60vw;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,0.08);
  background: rgba(255,255,255,0.8);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search input:focus {
  border-color: rgba(10,132,255,0.4);
  box-shadow: 0 0 0 3px rgba(10,132,255,0.12);
}
.chips { display: flex; flex-wrap: wrap; gap: 10px; }

.chip {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(255,255,255,0.6);
  cursor: pointer;
  font-size: 13px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0,0,0,0.1);
}

.chip.active {
  background: linear-gradient(135deg, rgba(16,17,20,0.95), rgba(16,17,20,0.85));
  color: white;
  border-color: transparent;
}

.content {
  display: grid;
  gap: 20px;
  align-items: start;
  padding: 0;
}

.panel {
  background: linear-gradient(180deg, rgba(255,255,255,0.8), rgba(255,255,255,0.5));
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 8px 24px rgba(15,23,42,0.08);
  border: 1px solid rgba(255,255,255,0.7);
  backdrop-filter: none;
  animation: fadeUp 0.6s ease both;
  position: relative;
  z-index: 1;
}

.list {
  max-height: 72vh;
  min-height: 62vh;
  overflow: auto;
  padding: 6px 4px;
  background: transparent;
  border: none;
  box-shadow: none;
}

.list.panel {
  background: transparent;
  border: none;
  box-shadow: none;
}

.post-item {
  padding: 14px 12px 14px 20px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.45);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  background: rgba(255,255,255,0.35);
}

.post-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(10,132,255,0.75), rgba(94,92,230,0.75));
  opacity: 0.2;
  transition: opacity 0.2s ease;
}

.post-item:hover {
  background: rgba(255,255,255,0.6);
  box-shadow: 0 10px 22px rgba(15,23,42,0.08);
}

.post-item:hover::before,
 .post-item.active::before { opacity: 0.8; }

.post-item.active {
  background: rgba(255,255,255,0.72);
}

.post-item + .post-item {
  border-top: none;
  margin-top: 8px;
}

.post-title {
  font-weight: 600;
  margin-bottom: 6px;
  font-family: var(--font-serif);
  letter-spacing: 0.2px;
  font-size: 18px;
  line-height: 1.4;
}

.post-meta {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.reader {
  min-height: 68vh;
  line-height: 1.9;
  font-size: 18px;
  color: #14161a;
}

.reader h1, .reader h2, .reader h3 {
  margin-top: 26px;
  font-family: var(--font-serif);
  letter-spacing: 0.2px;
  font-weight: 500;
  color: #1a1d22;
}

.reader h1 { font-size: 30px; line-height: 1.35; }
.reader h2 { font-size: 22px; line-height: 1.45; }
.reader h3 { font-size: 19px; line-height: 1.5; }

.reader p { margin: 16px 0; }

.reader ul,
.reader ol {
  padding-left: 20px;
  margin: 18px 0;
}

.reader li { margin: 8px 0; }

.reader a {
  color: #0b5bd3;
  text-decoration: none;
  border-bottom: 1px solid rgba(11,91,211,0.2);
}

.reader a:hover { border-bottom-color: rgba(11,91,211,0.6); }

.reader pre {
  background: #0b1220;
  color: #e6edf6;
  padding: 16px 18px;
  border-radius: 12px;
  overflow: auto;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
}

.reader code {
  font-family: var(--font-mono);
  font-size: 0.95em;
  background: rgba(15,23,42,0.05);
  padding: 2px 6px;
  border-radius: 6px;
}

.reader pre code {
  background: transparent;
  padding: 0;
}

.reader blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 14px;
  color: var(--muted);
  margin: 18px 0;
  background: rgba(10,132,255,0.04);
  border-radius: 12px;
}

.reader img { max-width: 100%; border-radius: 12px; box-shadow: var(--shadow-soft); }

.empty { color: var(--muted); text-align: center; padding: 40px 10px; }

.note-wrapper {
  max-width: 1120px;
  margin: 0 auto;
}

.note-meta {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 10px;
}
.note-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.4;
  margin: 6px 0 8px;
  color: #1a1d22;
}


.about-card {
  max-width: 720px;
  margin: 40px auto;
  background: var(--panel);
  border-radius: 24px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.tagline { margin-top: 16px; font-style: italic; color: var(--muted); }

.footer {
  display: flex;
  justify-content: space-between;
  padding: 20px 28px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(20px) scale(1.04); }
}

@keyframes drift {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-16px) translateX(12px); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .list { max-height: none; }
  .post-title { font-size: 16px; }
  .reader { font-size: 16px; }
}