/* ========== Design Tokens ========== */
:root {
  --brand-500: #10B981;
  --brand-600: #059669;
  --brand-50: #ECFDF5;
  --brand-100: #D1FAE5;
  --ink-900: #0F172A;
  --ink-600: #475569;
  --ink-400: #94A3B8;
  --paper: #FAFAF7;
  --card: #FFFFFF;
  --line: #E5E7EB;
  --danger: #EF4444;
  --radius-card: 16px;
  --radius-item: 12px;
  --radius-btn: 10px;
  --shadow-card: 0 1px 2px rgba(15,23,42,.04), 0 4px 12px rgba(15,23,42,.04);
}

/* Dark Mode */
.dark {
  --paper: #0F172A;
  --card: #1E293B;
  --line: #334155;
  --ink-900: #F1F5F9;
  --ink-600: #CBD5E1;
  --ink-400: #64748B;
  --brand-50: #064E3B;
  --brand-100: #065F46;
}

.dark body {
  background: var(--paper);
  color: var(--ink-900);
}

.dark .navbar {
  background: var(--card);
  border-bottom-color: var(--line);
}

.dark .navbar-title {
  color: var(--ink-900);
}

.dark .navbar-subtitle {
  color: var(--ink-400);
}

.dark .theme-toggle {
  border-color: var(--line);
  color: var(--ink-600);
}

.dark .theme-toggle:hover {
  background: var(--line);
}

.dark .site-footer {
  border-top-color: var(--line);
  background: var(--card);
}

.dark .footer-tagline,
.dark .footer-copy {
  color: var(--ink-400);
}

/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Noto Sans SC", "Inter", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

/* ========== Navbar ========== */
.navbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.navbar-logo img {
  height: 32px;
  width: auto;
  display: block;
}
.navbar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-900);
  line-height: 1.2;
}
.navbar-subtitle {
  font-size: 12px;
  color: var(--ink-400);
  line-height: 1.2;
  margin-top: 2px;
}
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.theme-toggle:hover {
  background: var(--brand-50);
}
.theme-toggle svg {
  color: var(--text);
  transition: color 0.2s;
}
.dark .theme-icon-sun { display: none !important; }
.dark .theme-icon-moon { display: block !important; }

/* ========== Brand Header ========== */
.brand-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--brand-50), var(--brand-100));
  border-radius: var(--radius-card);
  margin-bottom: 28px;
}
.brand-logo-wrap { flex-shrink: 0; }
.brand-logo-img { width: 64px; height: 64px; border-radius: 16px; object-fit: cover; }
.brand-logo-fallback { display: none; width: 64px; height: 64px; border-radius: 16px; background: var(--brand-500); place-items: center; color: #fff; }
.brand-title { font-size: 20px; font-weight: 700; color: var(--ink-900); }
.brand-sub { font-size: 13px; color: var(--ink-600); margin-top: 2px; }

/* ========== Block ========== */
.block { margin-bottom: 24px; }
.block-head { margin-bottom: 12px; }
.block-title { font-size: 15px; font-weight: 600; color: var(--ink-900); }
.block-desc { font-size: 12px; color: var(--ink-400); margin-top: 2px; }

/* ========== Form Card ========== */
.form-card {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 20px;
  box-shadow: var(--shadow-card);
}
.field { display: block; margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }
.field-label {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; font-weight: 500; color: var(--ink-600); margin-bottom: 6px;
}
.required { color: var(--danger); font-style: normal; }
.counter { font-size: 11px; color: var(--ink-400); font-weight: 400; }
.field-input {
  width: 100%; padding: 10px 14px; font-size: 14px; font-family: inherit;
  border: 1.5px solid var(--line); border-radius: var(--radius-item);
  background: var(--card); color: var(--ink-900);
  transition: border-color .15s, box-shadow .15s;
  resize: vertical;
}
.field-input:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--brand-50);
}
.field-textarea { min-height: 160px; resize: vertical; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 24px; font-size: 14px; font-weight: 600; font-family: inherit;
  border: none; border-radius: var(--radius-btn); cursor: pointer;
  transition: all .15s cubic-bezier(.4,0,.2,1);
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand-500); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--brand-600); }
.btn-secondary { background: var(--card); color: var(--brand-500); border: 1.5px solid var(--brand-500); }
.btn-secondary:hover:not(:disabled) { background: var(--brand-50); }
.btn-outline {
  background: var(--card); color: var(--ink-600);
  border: 1.5px solid var(--line);
}
.btn-outline:hover:not(:disabled) { border-color: var(--ink-400); }
.btn-outline.active { border-color: var(--brand-500); background: var(--brand-50); color: var(--brand-600); }
.btn-sm { padding: 6px 14px; font-size: 12px; }

/* ========== Selector Grid ========== */
.selector-grid {
  display: grid; gap: 8px;
}
.selector-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.selector-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.selector-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.selector-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.selector-item {
  background: var(--card); border: 1.5px solid var(--line);
  border-radius: var(--radius-item); padding: 10px 12px;
  cursor: pointer; text-align: center;
  transition: all .15s cubic-bezier(.4,0,.2,1);
  font-size: 13px; color: var(--ink-600);
}
.selector-item:hover { border-color: var(--ink-400); transform: translateY(-1px); }
.selector-item.active {
  border-color: var(--brand-500); border-width: 2px;
  background: var(--brand-50); color: var(--brand-600);
  font-weight: 600;
}
.selector-item.recommended {
  position: relative;
}
.selector-item.recommended::after {
  content: "推荐"; position: absolute; top: -8px; right: -8px;
  background: var(--brand-500); color: #fff; font-size: 10px;
  padding: 1px 6px; border-radius: 10px; font-weight: 600;
}
.selector-name { font-weight: 500; }

/* ========== Result Area ========== */
.result-area {
  background: var(--card); border-radius: var(--radius-card);
  box-shadow: var(--shadow-card); overflow: hidden;
  margin-top: 24px;
}
.result-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; border-bottom: 1px solid var(--line);
  font-size: 14px; font-weight: 600; color: var(--ink-900);
}
.result-actions { display: flex; gap: 8px; }
.result-body {
  padding: 20px; display: flex; justify-content: center;
  background: #F9FAFB;
  min-height: 200px;
}
.result-body svg {
  max-width: 100%; height: auto; border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.result-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--ink-400); font-size: 14px; min-height: 200px;
}
.result-empty svg { width: 48px; height: 48px; opacity: .3; margin-bottom: 10px; }

/* ========== Section Preview (after analysis) ========== */
.section-preview {
  background: var(--card); border-radius: var(--radius-card);
  padding: 16px 20px; box-shadow: var(--shadow-card);
}
.section-preview h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; color: var(--ink-900); }
.section-preview .summary { font-size: 13px; color: var(--ink-400); margin-bottom: 12px; }
.section-preview .section-item {
  display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.section-preview .section-item:last-child { border-bottom: none; }
.section-preview .section-label {
  font-weight: 600; color: var(--brand-600); white-space: nowrap; min-width: 60px;
}
.section-preview .section-content { color: var(--ink-600); }

/* ========== Loading ========== */
.loading {
  display: flex; align-items: center; gap: 10px; color: var(--ink-400); font-size: 14px;
}
.loading-dots { display: flex; gap: 4px; }
.loading-dots span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand-500);
  animation: sprout 1.2s ease infinite;
}
.loading-dots span:nth-child(2) { animation-delay: .15s; }
.loading-dots span:nth-child(3) { animation-delay: .3s; }

@keyframes sprout {
  0%, 60%, 100% { transform: translateY(0); opacity: .4; }
  30% { transform: translateY(-8px); opacity: 1; }
}

/* ========== Toast ========== */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  padding: 10px 24px; border-radius: var(--radius-btn);
  font-size: 13px; font-weight: 500; z-index: 100;
  animation: toastIn .3s ease;
}
.toast-error { background: #FEF2F2; color: var(--danger); border: 1px solid #FECACA; }
.toast-success { background: var(--brand-50); color: var(--brand-600); border: 1px solid var(--brand-100); }
.toast-info { background: #EFF6FF; color: #1D4ED8; border: 1px solid #BFDBFE; }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ========== Section Edit Rows ========== */
.section-edit-row {
  margin-bottom: 8px;
}
.section-edit-row input {
  padding: 8px 10px; font-size: 13px;
}

/* ========== Move Buttons ========== */
.btn-move {
  width: 24px; height: 20px; padding: 0;
  border: 1px solid var(--line); border-radius: 4px;
  background: var(--card); color: var(--ink-400);
  font-size: 9px; cursor: pointer; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: all .12s;
}
.btn-move:hover:not(:disabled) { border-color: var(--brand-500); color: var(--brand-500); }
.btn-move:disabled { opacity: .25; cursor: not-allowed; }
.btn-move-del { width: 26px; height: 36px; font-size: 13px; }
.btn-move-del:hover { border-color: var(--danger); color: var(--danger); }

/* ========== HTML 结构图引擎 ========== */
.infographic {
  background: var(--bg); color: var(--text); font-family: var(--font);
  padding: 40px 48px; min-height: 100%;
  box-sizing: border-box;
}
.infographic .info-title {
  font-size: 28px; font-weight: 700; color: var(--primary);
  text-align: center; margin-bottom: 32px; padding-bottom: 16px;
  border-bottom: 3px solid var(--accent);
}
.infographic .info-card {
  background: var(--card-bg); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 20px;
  border: 1.5px solid var(--line); margin-bottom: 12px;
}
.infographic .info-card-num {
  font-size: 11px; font-weight: 700; color: var(--primary); opacity: .5;
  margin-bottom: 4px;
}
.infographic .info-card-label {
  font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 6px;
}
.infographic .info-card-text {
  font-size: 14px; color: var(--sub); line-height: 1.7;
}
/* 流程箭头 */
.infographic .info-arrow {
  text-align: center; font-size: 22px; color: var(--primary);
  padding: 6px 0; opacity: .6;
}
/* 网格 */
.infographic .info-grid { display: grid; gap: 14px; }
.infographic .info-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.infographic .info-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
/* 中心辐射 */
.infographic .info-hub { text-align: center; }
.infographic .info-hub-center {
  display: inline-block; padding: 16px 32px; border-radius: 50%;
  background: var(--primary); color: #fff; font-size: 18px; font-weight: 700;
  margin-bottom: 24px;
}
.infographic .info-hub-spokes {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
/* 对比 */
.infographic .info-compare { display: flex; gap: 0; align-items: stretch; }
.infographic .info-compare-left, .info-compare-right { flex: 1; }
.infographic .info-vs {
  display: flex; align-items: center; justify-content: center;
  width: 60px; font-size: 18px; font-weight: 700;
  color: var(--accent);
}
/* 金字塔 */
.infographic .info-pyramid { display: flex; flex-direction: column; gap: 10px; align-items: center; }
.infographic .info-pyramid .info-card { text-align: center; }
/* 对比矩阵 */
.infographic .info-matrix { display: grid; gap: 10px; }
.infographic .info-matrix.cols-2 { grid-template-columns: repeat(2, 1fr); }
.infographic .info-matrix.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-matrix.cols-4 { grid-template-columns: repeat(4, 1fr); }
.infographic .info-matrix .info-card { margin-bottom: 0; text-align: center; }
/* 树状分支 */
.infographic .info-tree { text-align: center; }
.infographic .info-tree-root { display: inline-block; padding: 14px 36px; border-radius: var(--radius); background: var(--card-bg); border: 2.5px solid var(--primary); margin-bottom: 8px; }
.infographic .info-tree-root .info-card-label { font-size: 17px; margin-bottom: 2px; }
.infographic .info-tree-connector { height: 32px; border-left: 2px solid var(--primary); margin: 0 auto; width: 0; position: relative; }
.infographic .info-tree-connector::after { content: ''; position: absolute; bottom: 0; left: -6px; width: 0; height: 0; border-left: 6px solid transparent; border-right: 6px solid transparent; border-top: 8px solid var(--primary); }
.infographic .info-tree-branches { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.infographic .info-tree-branches .info-card { flex: 1; min-width: 120px; max-width: 200px; margin-bottom: 0; text-align: center; }
/* 结构拆解 */
.infographic .info-structure { position: relative; min-height: 360px; display: flex; align-items: center; justify-content: center; }
.infographic .info-structure-center { width: 100px; height: 100px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; text-align: center; z-index: 2; }
.infographic .info-structure-items { position: absolute; inset: 0; }
.infographic .info-structure-node { position: absolute; transform: translate(-50%, -50%); text-align: center; width: 130px; }
.infographic .info-structure-dot { display: inline-block; width: 40px; height: 40px; border-radius: 50%; background: var(--card-bg); border: 2px solid var(--primary); line-height: 36px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.infographic .info-structure-desc { font-size: 11px; color: var(--sub); line-height: 1.3; }
/* 冰山模型 */
.infographic .info-iceberg { text-align: center; }
.infographic .info-iceberg-above { margin-bottom: 24px; }
.infographic .info-iceberg-waterline { border-top: 2px dashed var(--secondary); padding: 4px 0; font-size: 12px; color: var(--secondary); margin-bottom: 8px; position: relative; }
.infographic .info-iceberg-waterline span { background: var(--bg); padding: 0 12px; position: relative; top: -10px; }
.infographic .info-iceberg-below .info-card { opacity: .85; }
/* 桥梁模型 */
.infographic .info-bridge { display: flex; align-items: flex-start; gap: 0; flex-wrap: wrap; }
.infographic .info-bridge-end { flex: 1; min-width: 160px; max-width: 220px; }
.infographic .info-bridge-end .info-card { text-align: center; border-width: 2.5px; margin-bottom: 0; }
.infographic .info-bridge-path { flex: 2; display: flex; align-items: center; gap: 6px; padding: 0 8px; justify-content: center; flex-wrap: wrap; }
.infographic .info-bridge-step { padding: 4px 12px; border-radius: 20px; background: var(--accent); opacity: .25; font-size: 12px; font-weight: 600; white-space: nowrap; }
.infographic .info-bridge-arrow { color: var(--primary); font-size: 16px; opacity: .5; }
/* 漏斗转化 */
.infographic .info-funnel { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.infographic .info-funnel .info-card { text-align: center; margin-bottom: 0; position: relative; }
.infographic .info-funnel .info-card::before { content: ''; position: absolute; left: 0; top: 0; width: 4px; height: 100%; background: var(--primary); opacity: .7; border-radius: 2px 0 0 2px; }
.infographic .info-funnel-arrow { color: var(--primary); opacity: .5; font-size: 18px; }
/* 数据仪表盘 */
.infographic .info-dashboard { display: grid; gap: 12px; }
.infographic .info-dashboard.cols-2 { grid-template-columns: repeat(2, 1fr); }
.infographic .info-dashboard.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-dashboard .info-card { text-align: center; margin-bottom: 0; }
.infographic .info-dashboard .info-kpi { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 6px; line-height: 1; }
.infographic .info-dashboard .info-card-label { font-size: 15px; }
/* 周期表 */
.infographic .info-periodic { display: grid; gap: 6px; }
.infographic .info-periodic.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-periodic.cols-4 { grid-template-columns: repeat(4, 1fr); }
.infographic .info-periodic.cols-5 { grid-template-columns: repeat(5, 1fr); }
.infographic .info-periodic.cols-6 { grid-template-columns: repeat(6, 1fr); }
.infographic .info-periodic .info-card { text-align: center; margin-bottom: 0; padding: 12px 8px; position: relative; }
.infographic .info-periodic .info-atom { position: absolute; top: 4px; left: 6px; font-size: 10px; font-family: 'Courier New', monospace; color: var(--primary); opacity: .5; font-weight: 700; }
/* 漫画分镜 */
.infographic .info-comic { display: flex; gap: 8px; }
.infographic .info-comic-panel { flex: 1; border: 2.5px solid var(--text); border-radius: 6px; padding: 16px 12px; background: var(--card-bg); text-align: center; position: relative; }
.infographic .info-comic-num { display: inline-block; width: 28px; height: 28px; border-radius: 50%; background: var(--primary); opacity: .2; line-height: 28px; font-weight: 700; font-size: 13px; margin-bottom: 8px; }
.infographic .info-comic-title { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.infographic .info-comic-text { font-size: 12px; color: var(--sub); line-height: 1.5; }
/* 故事山 */
.infographic .info-mountain { position: relative; min-height: 320px; padding: 40px 0 20px; }
.infographic .info-mountain-curve { position: absolute; left: 0; right: 0; top: 60px; bottom: 40px; background: var(--primary); opacity: .08; clip-path: polygon(0% 100%, 15% 60%, 35% 30%, 50% 20%, 65% 30%, 85% 60%, 100% 100%); }
.infographic .info-mountain-nodes { position: relative; z-index: 1; }
.infographic .info-mountain-node { position: absolute; transform: translate(-50%, -50%); text-align: center; }
.infographic .info-mountain-dot { display: inline-block; width: 24px; height: 24px; border-radius: 50%; background: var(--card-bg); border: 2.5px solid var(--primary); margin-bottom: 2px; }
.infographic .info-mountain-label { font-size: 12px; font-weight: 600; color: var(--text); white-space: nowrap; }
.infographic .info-mountain-text { font-size: 10px; color: var(--sub); white-space: nowrap; }
.infographic .info-mountain-peak { position: absolute; transform: translate(-50%, -50%); font-size: 11px; color: var(--secondary); font-weight: 700; }
/* 拼图 */
.infographic .info-jigsaw { display: grid; gap: 16px; text-align: center; }
.infographic .info-jigsaw.cols-2 { grid-template-columns: repeat(2, 1fr); }
.infographic .info-jigsaw.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-jigsaw-piece { display: inline-block; width: 80px; height: 80px; border-radius: 50%; border: 2.5px solid; line-height: 76px; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 4px; position: relative; }
.infographic .info-jigsaw-text { font-size: 11px; color: var(--sub); }
/* 维恩图 */
.infographic .info-venn { display: flex; align-items: center; justify-content: center; min-height: 300px; position: relative; }
.infographic .info-venn-circle { border-radius: 50%; position: absolute; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 20px; mix-blend-mode: multiply; }
.infographic .info-venn-circle .info-card-label { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.infographic .info-venn-circle .info-card-text { font-size: 11px; }
/* 路线图 */
.infographic .info-roadmap { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.infographic .info-roadmap-row { display: flex; gap: 12px; width: 100%; justify-content: center; }
.infographic .info-roadmap-card { text-align: center; background: var(--card-bg); border: 1.5px solid var(--primary); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 16px; width: 160px; position: relative; }
.infographic .info-roadmap-num { display: inline-block; width: 22px; height: 22px; border-radius: 50%; background: var(--primary); opacity: .2; line-height: 22px; font-size: 11px; font-weight: 700; margin-bottom: 6px; }
.infographic .info-roadmap-label { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 2px; }
.infographic .info-roadmap-text { font-size: 11px; color: var(--sub); }
/* 循环流程 */
.infographic .info-cycle { position: relative; min-height: 340px; }
.infographic .info-cycle-node { position: absolute; transform: translate(-50%, -50%); text-align: center; width: 100px; }
.infographic .info-cycle-circle { display: inline-block; width: 52px; height: 52px; border-radius: 50%; background: var(--card-bg); border: 2px solid var(--primary); line-height: 48px; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.infographic .info-cycle-label { font-size: 10px; color: var(--sub); }
/* 高密度模块 */
.infographic .info-dense { display: grid; gap: 8px; }
.infographic .info-dense.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-dense.cols-4 { grid-template-columns: repeat(4, 1fr); }
.infographic .info-dense .info-card { margin-bottom: 0; padding: 12px 10px; position: relative; border: 1px solid var(--line); }
.infographic .info-dense .info-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; border-radius: var(--radius) var(--radius) 0 0; }
.infographic .info-dense-num { position: absolute; top: 4px; left: 6px; font-size: 10px; font-family: 'Courier New', monospace; font-weight: 700; opacity: .5; }
.infographic .info-dense-label { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 4px; margin-top: 6px; }
.infographic .info-dense-text { font-size: 11px; color: var(--sub); line-height: 1.3; }
/* 等距地图 */
.infographic .info-isometric { display: grid; gap: 10px; }
.infographic .info-isometric.cols-3 { grid-template-columns: repeat(3, 1fr); }
.infographic .info-isometric.cols-4 { grid-template-columns: repeat(4, 1fr); }
.infographic .info-isometric .info-card { margin-bottom: 0; text-align: center; border-radius: 4px; border-style: solid; position: relative; transform: perspective(500px) rotateX(2deg); transition: none; }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(var(--bg-rgb), 0.5);
  padding: 2rem 0;
  transition: background 0.2s, border-color 0.2s;
}
.footer-inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--muted);
}
.footer-icon {
  width: 1rem;
  height: 1rem;
}
.footer-text {
  font-size: 0.875rem;
}
.footer-copy {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted-light);
}

@media (max-width: 600px) {
  .selector-grid.cols-5 { grid-template-columns: repeat(2, 1fr); }
  .selector-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .selector-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  #app { padding: 16px 12px 40px; }
  .brand-header { padding: 14px 16px; }
  .brand-title { font-size: 17px; }
}