/* ============================================================
   ops-notes 运维手札 · 样式表
   设计语言：数据指挥中心 HUD / 电子青 / 深空网格 / 扫描线
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --bg: #05080f;
  --bg-panel: #0a1120;
  --bg-card: #0c1628;
  --bg-card-hover: #10203a;
  --bg-inset: #060c18;
  --border: #18294a;
  --border-strong: #2b4d80;

  --text: #d9e7fa;
  --text-dim: #8fa8cc;
  --text-faint: #57709b;

  --cyan: #00e5ff;
  --cyan-soft: #63f2ff;
  --blue: #4f8dff;
  --green: #2bff9d;
  --red: #ff5470;
  --amber: #ffc24b;

  --glow-cyan: 0 0 0 1px rgba(0, 229, 255, .18), 0 0 22px rgba(0, 229, 255, .18);
  --glow-cyan-strong: 0 0 0 1px rgba(0, 229, 255, .35), 0 0 28px rgba(0, 229, 255, .35);

  --mono: "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;

  --radius: 4px;
  --radius-sm: 3px;
  --max-width: 1080px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 90% 55% at 50% -12%, rgba(0, 120, 255, 0.14), transparent 70%),
    radial-gradient(ellipse 60% 40% at 85% 110%, rgba(0, 229, 255, 0.07), transparent 70%),
    linear-gradient(rgba(79, 141, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 141, 255, 0.05) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 全屏扫描线层（HUD 签名元素） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 229, 255, 0.028) 0,
    rgba(0, 229, 255, 0.028) 1px,
    transparent 1px,
    transparent 4px
  );
}
/* 缓慢移动的横向扫光 */
body::after {
  content: "";
  position: fixed;
  left: 0; right: 0;
  height: 180px;
  pointer-events: none;
  z-index: 1;
  background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.05), transparent);
  animation: scan-sweep 9s linear infinite;
}
@keyframes scan-sweep {
  0% { top: -200px; }
  100% { top: 100vh; }
}

a { color: var(--cyan-soft); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  box-shadow: 0 0 12px rgba(0, 229, 255, .4);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--cyan);
  color: #001018;
  padding: 8px 16px;
  z-index: 100;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 11, 22, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(0, 229, 255, .25), 0 8px 30px rgba(0, 60, 120, .25);
}
.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand-prompt { color: var(--cyan); text-shadow: 0 0 10px rgba(0, 229, 255, .7); }
.brand-name { color: var(--cyan); text-shadow: 0 0 14px rgba(0, 229, 255, .55); }
.brand-cursor {
  width: 9px;
  height: 18px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, .8);
  display: inline-block;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text-dim);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: color .15s, border-color .15s, background .15s, box-shadow .15s;
}
.nav a:hover { color: var(--cyan-soft); text-decoration: none; border-color: var(--border-strong); background: rgba(0, 229, 255, .05); }
.nav a.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.09);
  box-shadow: 0 0 16px rgba(0, 229, 255, .25);
}

/* ---------- 主容器 ---------- */
main { flex: 1; position: relative; z-index: 2; }
#app {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 64px;
}

/* ---------- HUD 面板外壳（签名元素） ---------- */
.terminal {
  position: relative;
  background: linear-gradient(180deg, rgba(12, 22, 40, .92), rgba(8, 15, 28, .95));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--glow-cyan), 0 16px 48px rgba(0, 0, 0, 0.5);
}
/* HUD 角标：左上 */
.terminal::before {
  content: "";
  position: absolute;
  top: 8px; left: 8px;
  width: 22px; height: 22px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  opacity: .75;
  pointer-events: none;
}
/* HUD 角标：右下 */
.terminal::after {
  content: "";
  position: absolute;
  bottom: 8px; right: 8px;
  width: 22px; height: 22px;
  border-bottom: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
  opacity: .75;
  pointer-events: none;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(10, 17, 32, .9);
  border-bottom: 1px solid var(--border);
}
.terminal-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,.3);
}
.dot-red { background: var(--red); box-shadow: 0 0 8px rgba(255,84,112,.7); }
.dot-amber { background: var(--amber); box-shadow: 0 0 8px rgba(255,194,75,.7); }
.dot-green { background: var(--green); box-shadow: 0 0 8px rgba(43,255,157,.7); }
.terminal-title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-faint);
  letter-spacing: .03em;
}
.terminal-body { padding: 28px 26px; }

/* ---------- Hero ---------- */
.hero { margin-bottom: 48px; }
.hero .terminal-body { padding: 36px 32px; }
.hero-line {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--text-dim);
  margin: 0 0 6px;
  white-space: pre-wrap;
}
.hero-cmd { color: var(--cyan); text-shadow: 0 0 10px rgba(0, 229, 255, .5); }
.hero-out { color: var(--text-dim); }
.hero-title {
  font-family: var(--mono);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  color: var(--cyan);
  margin: 18px 0 10px;
  line-height: 1.3;
  letter-spacing: .02em;
  text-shadow: 0 0 24px rgba(0, 229, 255, .55), 0 0 60px rgba(0, 140, 255, .25);
}
.hero-sub {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 0 24px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.2;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: rgba(12, 22, 40, .8);
  color: var(--text);
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  min-height: 40px;
}
.btn:hover { background: var(--bg-card-hover); border-color: var(--cyan); box-shadow: 0 0 16px rgba(0, 229, 255, .25); text-decoration: none; }
.btn-primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #001218;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 229, 255, .45);
}
.btn-primary:hover { background: var(--cyan-soft); border-color: var(--cyan-soft); color: #001218; box-shadow: 0 0 28px rgba(0, 229, 255, .7); }
.btn-danger { color: var(--red); border-color: rgba(255,84,112,.55); }
.btn-danger:hover { background: rgba(255,84,112,.12); border-color: var(--red); box-shadow: 0 0 16px rgba(255,84,112,.3); }
.btn-sm { padding: 6px 12px; font-size: 13px; min-height: 32px; }

/* ---------- 章节标题 ---------- */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 8px 0 20px;
}
.section-head h2 {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  margin: 0;
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(0, 229, 255, .35);
}
.section-head .section-hint {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-faint);
}

/* ---------- 文章数据流 ---------- */
.post-list { display: flex; flex-direction: column; gap: 14px; }
.post-item {
  position: relative;
  display: block;
  background: linear-gradient(180deg, rgba(12, 22, 40, .9), rgba(10, 18, 34, .9));
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 18px 22px;
  overflow: hidden;
  transition: border-color .18s, background .18s, transform .18s, box-shadow .18s;
}
.post-item:hover {
  text-decoration: none;
  border-left-color: var(--cyan);
  border-color: var(--cyan);
  background: var(--bg-card-hover);
  transform: translateX(4px);
  box-shadow: var(--glow-cyan);
}
/* hover 时卡片内掠过一道扫光 */
.post-item::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: -60%;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgba(0, 229, 255, .09), transparent);
  transition: left .5s ease;
  pointer-events: none;
}
.post-item:hover::after { left: 120%; }
.post-logline {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  margin-bottom: 8px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.log-level { color: var(--cyan); font-weight: 700; text-shadow: 0 0 9px rgba(0, 229, 255, .5); }
.post-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.post-item:hover h3 { color: var(--cyan); }
.post-excerpt { margin: 0 0 10px; color: var(--text-dim); font-size: 14.5px; }
.post-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 8px;
}

/* ---------- 文章详情 ---------- */
.article {
  background: linear-gradient(180deg, rgba(12, 22, 40, .94), rgba(9, 16, 30, .96));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--glow-cyan);
  padding: 36px 40px;
}
.article-header { margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px dashed var(--border-strong); }
.article-header h1 { font-size: 28px; margin: 0 0 12px; line-height: 1.4; color: var(--text); }
.article-meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-faint);
  display: flex; gap: 14px; flex-wrap: wrap;
}
.article-body { font-size: 16px; }
.article-body h2 {
  font-family: var(--mono);
  font-size: 20px;
  margin: 32px 0 14px;
  color: var(--cyan);
  border-left: 3px solid var(--cyan);
  padding-left: 12px;
  text-shadow: 0 0 12px rgba(0, 229, 255, .3);
}
.article-body h3 { font-size: 17px; margin: 24px 0 10px; color: var(--text); }
.article-body p { margin: 0 0 16px; }
.article-body ul, .article-body ol { margin: 0 0 16px; padding-left: 24px; }
.article-body li { margin-bottom: 6px; }
.article-body code {
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 6px;
  color: var(--cyan-soft);
}
.article-body pre {
  background: var(--bg-inset);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: inset 0 0 24px rgba(0, 120, 255, .08);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 0 0 18px;
}
.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: #c7e4ff;
  font-size: 13.5px;
  line-height: 1.65;
}
.article-body blockquote {
  margin: 0 0 18px;
  padding: 10px 18px;
  border-left: 3px solid var(--cyan);
  background: rgba(0, 229, 255, 0.06);
  color: var(--text-dim);
}
.article-back { margin-bottom: 20px; }

/* ---------- 工具箱 ---------- */
.tool-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}
.tool-tab {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--text-dim);
  background: rgba(12, 22, 40, .6);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  cursor: pointer;
  min-height: 40px;
  transition: all .15s;
}
.tool-tab:hover { color: var(--cyan-soft); border-color: var(--cyan); box-shadow: 0 0 14px rgba(0, 229, 255, .2); }
.tool-tab.active {
  color: #001218;
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
  box-shadow: 0 0 18px rgba(0, 229, 255, .5);
}
.tool-panel {
  background: linear-gradient(180deg, rgba(12, 22, 40, .9), rgba(9, 16, 30, .94));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--glow-cyan);
  padding: 26px 28px;
}
.tool-panel h3 {
  font-family: var(--mono);
  font-size: 16px;
  margin: 0 0 6px;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(0, 229, 255, .3);
}
.tool-desc { color: var(--text-dim); font-size: 14px; margin: 0 0 18px; }

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.field input, .field textarea, .field select {
  width: 100%;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  padding: 10px 12px;
}
.field textarea { min-height: 150px; resize: vertical; line-height: 1.6; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(0, 229, 255, .4), 0 0 16px rgba(0, 229, 255, .2);
}
.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 180px; }
.tool-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 6px 0 16px; }

.result-box {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13.5px;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 48px;
  color: var(--text);
}
.result-box.ok { border-left: 3px solid var(--green); box-shadow: 0 0 14px rgba(43, 255, 157, .12); }
.result-box.err { border-left: 3px solid var(--red); color: var(--red); box-shadow: 0 0 14px rgba(255, 84, 112, .12); }
.result-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  margin: 14px 0 6px;
}

.kv-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 13.5px; }
.kv-table th, .kv-table td {
  border: 1px solid var(--border);
  padding: 9px 12px;
  text-align: left;
}
.kv-table th {
  background: var(--bg-panel);
  color: var(--text-dim);
  font-weight: 500;
  width: 38%;
}
.kv-table td { color: var(--cyan-soft); word-break: break-all; }

.tool-note {
  margin-top: 18px;
  padding: 10px 14px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-faint);
}

/* ---------- 笔记 ---------- */
.notes-editor {
  background: linear-gradient(180deg, rgba(12, 22, 40, .9), rgba(9, 16, 30, .94));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--glow-cyan);
  padding: 22px 24px;
  margin-bottom: 28px;
}
.notes-editor textarea { min-height: 110px; }
.notes-list { display: flex; flex-direction: column; gap: 12px; }
.note-item {
  background: linear-gradient(180deg, rgba(12, 22, 40, .9), rgba(10, 18, 34, .9));
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: border-color .15s, box-shadow .15s;
}
.note-item:hover { border-left-color: var(--cyan); box-shadow: 0 0 14px rgba(0, 229, 255, .15); }
.note-time {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.note-text {
  font-size: 14.5px;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0 0 10px;
}
.note-actions { display: flex; gap: 8px; }
.empty-state {
  text-align: center;
  padding: 48px 20px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 14px;
}

/* ---------- 关于页 ---------- */
.doc {
  background: linear-gradient(180deg, rgba(12, 22, 40, .92), rgba(9, 16, 30, .95));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--glow-cyan);
  padding: 32px 36px;
}
.doc h2 {
  font-family: var(--mono);
  font-size: 19px;
  color: var(--cyan);
  margin: 30px 0 12px;
  scroll-margin-top: 90px;
  text-shadow: 0 0 12px rgba(0, 229, 255, .3);
}
.doc h2:first-child { margin-top: 0; }
.doc p, .doc li { color: var(--text-dim); font-size: 15px; }
.doc ul { padding-left: 22px; }
.doc strong { color: var(--text); }
.doc code {
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 6px;
  color: var(--cyan-soft);
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-panel), #070c18);
  box-shadow: 0 -1px 0 rgba(0, 229, 255, .2);
  margin-top: auto;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; padding: 36px 24px 20px; }
.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.footer-col h3 {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
  margin: 0 0 10px;
}
.footer-col p, .footer-col li { font-size: 13px; color: var(--text-faint); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 6px; }
.footer-col a { color: var(--text-dim); }
.beian-placeholder {
  font-style: normal;
  border: 1px dashed var(--border-strong);
  border-radius: 3px;
  padding: 2px 6px;
  display: inline-block;
}
.footer-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 18px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
}
.footer-status { display: inline-flex; align-items: center; gap: 7px; }
.footer-status .dot {
  width: 8px; height: 8px; border-radius: 50%; display: inline-block;
  background: var(--green);
  box-shadow: 0 0 8px rgba(43, 255, 157, .8);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-panel);
  border: 1px solid var(--cyan);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 24px rgba(0, 229, 255, .35), 0 8px 30px rgba(0,0,0,.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 200;
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .topbar-inner { flex-direction: column; align-items: stretch; gap: 10px; }
  .nav { justify-content: space-between; }
  .nav a { flex: 1; text-align: center; padding: 8px 6px; }
  #app { padding: 28px 16px 48px; }
  .article, .doc { padding: 24px 20px; }
  .terminal-body { padding: 20px 18px; }
  .hero .terminal-body { padding: 24px 20px; }
  .footer-cols { grid-template-columns: 1fr; gap: 22px; }
  .field-row { flex-direction: column; }
  .kv-table th { width: 46%; }
}

/* ============================================================
   访问来源地图页
   ============================================================ */
.demo-banner {
  margin-bottom: 18px;
  padding: 10px 16px;
  border: 1px solid var(--amber);
  border-radius: var(--radius-sm);
  background: rgba(255, 194, 75, 0.08);
  color: var(--amber);
  font-family: var(--mono);
  font-size: 13px;
}
.stats-meta {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  margin: 0 0 18px;
}

/* 统计卡片 */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}
.stat-card {
  position: relative;
  background: linear-gradient(180deg, rgba(12, 22, 40, .92), rgba(9, 16, 30, .95));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow: hidden;
  transition: border-color .18s, box-shadow .18s;
}
.stat-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 38px; height: 2px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, .7);
}
.stat-card:hover { border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.stat-card-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.stat-card-value {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.15;
  text-shadow: 0 0 18px rgba(0, 229, 255, .45);
}
.stat-card-sub {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 4px;
}

/* 地图 + 排行布局 */
.map-grid {
  display: grid;
  grid-template-columns: 1.85fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
.map-panel, .rank-panel, .trend-panel {
  background: linear-gradient(180deg, rgba(12, 22, 40, .9), rgba(9, 16, 30, .94));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--glow-cyan);
  padding: 18px 20px;
}
.map-panel-title, .rank-panel-title {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--cyan);
  margin: 0 0 12px;
  text-shadow: 0 0 10px rgba(0, 229, 255, .3);
}
#visit-map { width: 100%; height: 520px; }

/* 排行 */
.rank-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 0;
}
.rank-index {
  flex: none;
  width: 24px; height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 3px;
}
.rank-index.rank-top {
  color: #001218;
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
  box-shadow: 0 0 10px rgba(0, 229, 255, .5);
}
.rank-mid { flex: 1; min-width: 0; }
.rank-name-line { display: flex; flex-direction: column; gap: 4px; }
.rank-name {
  font-size: 13.5px;
  color: var(--text-dim);
}
.rank-bar {
  display: block;
  height: 4px;
  background: var(--bg-inset);
  border-radius: 2px;
  overflow: hidden;
}
.rank-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #0d4a6e, #00e5ff);
  box-shadow: 0 0 8px rgba(0, 229, 255, .5);
}
.rank-uv {
  flex: none;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
  min-width: 44px;
  text-align: right;
}

/* 趋势 */
.trend-panel { margin-bottom: 8px; }
#trend-chart { width: 100%; height: 280px; }

.map-loading {
  padding: 40px 20px;
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 14px;
}

@media (max-width: 900px) {
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .map-grid { grid-template-columns: 1fr; }
  #visit-map { height: 420px; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}