/* TasteLens: 方案 A 极简雅致纸感风 (Paper & Ink Style System)
   灵感源自：Notion、Readwise Reader、iA Writer 与典雅精装书刊
*/

:root {
  /* 浅色温润燕麦纸色调 */
  --bg-app: #fcfbf9;
  --bg-sidebar: #f5f2eb;
  --bg-card: #ffffff;
  --bg-card-subtle: #f8f6f0;
  --bg-hover: #ebe7de;
  --bg-active: #e6e0d3;
  
  --border-light: #ece7de;
  --border-strong: #dcd4c5;
  --border-focus: #78716c;

  --text-main: #201e1c;
  --text-secondary: #57534e;
  --text-muted: #8c827a;
  --text-faint: #b4aa9f;

  --accent-terracotta: #c2410c;
  --accent-ink: #1c1917;
  --accent-blue: #1e3a5f;
  --accent-sage: #2e6047;
  --accent-amber: #b45309;

  --badge-visual: #7c2d12;
  --badge-visual-bg: #ffedd5;
  --badge-comp: #1e3a5f;
  --badge-comp-bg: #e0f2fe;
  --badge-code: #14532d;
  --badge-code-bg: #dcfce7;
  --badge-mental: #581c87;
  --badge-mental-bg: #f3e8ff;

  --radius-xl: 14px;
  --radius-lg: 10px;
  --radius-md: 6px;
  --radius-sm: 4px;

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-float: 0 10px 25px -5px rgba(40, 30, 20, 0.06), 0 8px 10px -6px rgba(40, 30, 20, 0.04);
  
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, "Georgia", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, Monaco, Consolas, monospace;
}

/* 温润夜间墨玉模式 (按需切换，不刺眼) */
body.theme-dark {
  --bg-app: #18191c;
  --bg-sidebar: #131416;
  --bg-card: #202226;
  --bg-card-subtle: #26282e;
  --bg-hover: #2c2e35;
  --bg-active: #34373f;

  --border-light: #2b2e36;
  --border-strong: #3b3f4a;
  --border-focus: #a8a29e;

  --text-main: #f3f4f6;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-faint: #64748b;

  --badge-visual-bg: rgba(194, 65, 12, 0.25);
  --badge-visual: #fb923c;
  --badge-comp-bg: rgba(30, 58, 95, 0.35);
  --badge-comp: #7dd3fc;
  --badge-code-bg: rgba(20, 83, 45, 0.3);
  --badge-code: #86efac;
  --badge-mental-bg: rgba(88, 28, 135, 0.3);
  --badge-mental: #d8b4fe;

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-float: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

html, body {
  height: 100%;
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* 全屏双栏应用容器 */
.app-layout {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* ============================================================
   1. 左侧边栏 (Sidebar 目录索引)
   ============================================================ */
.sidebar {
  width: 320px;
  min-width: 300px;
  max-width: 360px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  z-index: 10;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.sidebar-header {
  padding: 20px 18px 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  font-size: 22px;
  line-height: 1;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 400;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-light);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

/* 搜索过滤框 */
.search-container {
  padding: 0 16px 12px 16px;
  position: relative;
}

.search-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 8px 30px 8px 32px;
  font-size: 0.85rem;
  color: var(--text-main);
  outline: none;
  transition: all 0.2s ease;
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(120, 113, 108, 0.1);
}

.search-icon {
  position: absolute;
  left: 26px;
  top: 8px;
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: none;
}

.clear-search-btn {
  position: absolute;
  right: 24px;
  top: 7px;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 12px;
  cursor: pointer;
}

/* 分类胶囊选择 */
.category-filters {
  display: flex;
  gap: 6px;
  padding: 0 16px 12px 16px;
  overflow-x: auto;
  scrollbar-width: none;
}

.category-filters::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  white-space: nowrap;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.18s ease;
}

.filter-pill:hover {
  background: var(--bg-hover);
}

.filter-pill.active {
  background: var(--bg-card);
  border-color: var(--border-strong);
  color: var(--text-main);
  font-weight: 600;
  box-shadow: var(--shadow-subtle);
}

.pill-count {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 2px;
}

/* 目录索引列表 */
.nav-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 12px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  position: relative;
  user-select: none;
}

.nav-item:hover {
  background: var(--bg-hover);
}

.nav-item.active {
  background: var(--bg-card);
  box-shadow: var(--shadow-subtle);
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background-color: var(--text-main);
  border-radius: 0 2px 2px 0;
}

.nav-item-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.nav-item-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item.active .nav-item-title {
  font-weight: 600;
}

.nav-item-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-sans);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item-badge {
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin-left: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* 侧边栏底部操作 */
.sidebar-footer {
  padding: 12px 14px;
  border-top: 1px solid var(--border-light);
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-btn {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-subtle);
}

.footer-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.footer-sub-actions {
  display: flex;
  gap: 6px;
}

.footer-sub-btn {
  flex: 1;
  padding: 6px 8px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: center;
  transition: all 0.18s ease;
}

.footer-sub-btn:hover {
  background: var(--bg-hover);
  color: var(--text-main);
}

/* ============================================================
   2. 右侧专注精读画布 (Main Reading Canvas)
   ============================================================ */
.main-canvas {
  flex: 1;
  height: 100%;
  overflow-y: auto;
  background-color: var(--bg-app);
  padding: 40px 60px 80px 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  scroll-behavior: smooth;
}

.mobile-topbar {
  display: none;
  width: 100%;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-app);
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.menu-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  cursor: pointer;
}

/* 概念精读文章排版系统 */
.reading-article {
  width: 100%;
  max-width: 820px;
  animation: fadeInArticle 0.22s ease-out;
}

@keyframes fadeInArticle {
  from {
    opacity: 0.3;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 顶部元数据与快捷翻页 */
.article-header {
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 24px;
}

.article-top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.breadcrumb-cat {
  font-weight: 500;
  color: var(--text-secondary);
}

.article-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-step-btn {
  background: transparent;
  border: 1px solid var(--border-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s ease;
}

.nav-step-btn:hover:not(:disabled) {
  background: var(--bg-card);
  border-color: var(--border-strong);
  color: var(--text-main);
}

.nav-step-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-favorite {
  background: transparent;
  border: 1px solid var(--border-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-favorite.active {
  background: #fef3c7;
  border-color: #f59e0b;
  color: #b45309;
}

body.theme-dark .btn-favorite.active {
  background: rgba(245, 158, 11, 0.2);
  border-color: #f59e0b;
  color: #fbbf24;
}

/* 大标题与标头 */
.article-title-group {
  margin-bottom: 12px;
}

.article-category-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.article-title {
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 6px;
}

.article-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  font-weight: 400;
  font-family: var(--font-sans);
}

/* 3秒直觉口诀金句引用 Callout */
.slogan-callout {
  background: var(--bg-card-subtle);
  border-left: 3px solid var(--accent-terracotta);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin: 28px 0 36px 0;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--text-main);
  font-style: italic;
  box-shadow: var(--shadow-subtle);
}

body.theme-dark .slogan-callout {
  border-left-color: #ea580c;
}

/* 正文小节与标题规范 */
.section-block {
  margin-bottom: 40px;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: var(--border-light);
}

/* 一眼直觉 / 核心原理深度解析文本 */
.insight-prose {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-main);
  margin-bottom: 16px;
}

/* 新手误区 vs 高手破局直觉对比 */
.contrast-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 14px;
}

.contrast-card {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  box-shadow: var(--shadow-subtle);
}

.contrast-card.rookie {
  border-left: 3px solid #ef4444;
}

.contrast-card.master {
  border-left: 3px solid #10b981;
}

.contrast-header {
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.contrast-card.rookie .contrast-header {
  color: #b91c1c;
}

.contrast-card.master .contrast-header {
  color: #047857;
}

body.theme-dark .contrast-card.rookie .contrast-header {
  color: #f87171;
}

body.theme-dark .contrast-card.master .contrast-header {
  color: #34d399;
}

.contrast-desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 现实世界锚点卡片 */
.anchor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  box-shadow: var(--shadow-subtle);
}

.anchor-icon {
  font-size: 24px;
  line-height: 1;
  margin-top: 2px;
}

.anchor-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 自测清单 Checklist */
.checklist-container {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-subtle);
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.93rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.check-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-hover);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--accent-sage);
  flex-shrink: 0;
  margin-top: 3px;
}

/* 视觉微缩示例沙盒通用容器 */
.preview-showcase {
  background: var(--bg-card-subtle);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 14px;
  overflow: hidden;
  min-height: 150px;
}

/* =========================================================================
   1. 视觉风格与美学流派微缩沙盒 (13 种)
   ========================================================================= */

/* 1.1 Bento Grid 便当盒 */
.paper-bento-mockup {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: 75px 75px;
  gap: 12px;
  width: 100%;
  max-width: 440px;
}
.p-bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-subtle);
}
.p-bento-main {
  grid-row: span 2;
  border-left: 3px solid var(--accent-ink);
  gap: 4px;
}
.p-bento-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent-sage);
}
.p-bento-caption {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.p-bento-num {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}
.p-bento-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
}
.p-bento-icon {
  font-size: 1.1rem;
}

/* 1.2 Neubrutalism 新野兽派 */
.paper-brutal-mockup {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: center;
}
.p-brutal-box {
  background: #fef08a;
  border: 2.5px solid #000;
  box-shadow: 4px 4px 0px #000;
  padding: 12px 18px;
  font-weight: 900;
  font-size: 0.9rem;
  color: #000;
  letter-spacing: -0.02em;
}
.p-brutal-box.alt {
  background: #fbcfe8;
  transform: rotate(2deg);
}
.p-brutal-tag {
  background: #fff;
  border: 2px solid #000;
  box-shadow: 2px 2px 0px #000;
  padding: 6px 12px;
  font-size: 0.7rem;
  font-weight: 800;
  color: #000;
}

/* 1.3 Glassmorphism 毛玻璃 */
.paper-glass-mockup {
  position: relative;
  width: 100%;
  max-width: 420px;
  height: 130px;
  background: linear-gradient(135deg, #fbcfe8, #fed7aa, #c7d2fe);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.p-glass-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(20px);
}
.p-glass-orb.orb-1 {
  width: 90px;
  height: 90px;
  background: #ec4899;
  top: -15px;
  left: 30px;
}
.p-glass-orb.orb-2 {
  width: 80px;
  height: 80px;
  background: #6366f1;
  bottom: -15px;
  right: 40px;
}
.p-glass-sheet {
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 12px;
  padding: 14px 24px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}
.p-glass-title {
  font-weight: 700;
  font-size: 0.92rem;
  color: #1e293b;
}
.p-glass-sub {
  font-size: 0.72rem;
  color: #475569;
  margin-top: 3px;
}

/* 1.4 Swiss Style 瑞士与包豪斯 */
.paper-swiss-mockup {
  position: relative;
  background: #ffffff;
  border: 1px solid #111;
  padding: 20px 24px;
  width: 100%;
  max-width: 400px;
}
.p-swiss-badge {
  display: inline-block;
  background: #e30613;
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  margin-bottom: 8px;
}
.p-swiss-head {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.05em;
  color: #000;
  margin-bottom: 8px;
}
.p-swiss-sub {
  font-size: 0.72rem;
  font-weight: 700;
  color: #333;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-top: 2px solid #000;
  padding-top: 6px;
}

/* 1.5 Editorial Minimalist 杂志社论 */
.paper-editorial-mockup {
  background: #fdfcf7;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 22px 28px;
  width: 100%;
  max-width: 440px;
  font-family: Georgia, "Songti SC", "Noto Serif CJK SC", serif;
  box-shadow: 0 4px 18px rgba(0,0,0,0.03);
}
.p-editorial-meta {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: #8c827a;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.p-editorial-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.25;
  color: #22201d;
  font-style: italic;
}
.p-editorial-rule {
  width: 40px;
  height: 1px;
  background: #22201d;
  margin: 10px 0;
}
.p-editorial-body {
  font-size: 0.8rem;
  line-height: 1.85;
  color: #4a453e;
}

/* 1.6 Claymorphism 粘土拟态 */
.paper-clay-mockup {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
}
.p-clay-pill {
  padding: 12px 22px;
  border-radius: 28px;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.06);
}
.p-clay-pill.pink {
  background: #fbcfe8;
  color: #831843;
  box-shadow: inset 4px 4px 8px rgba(255, 255, 255, 0.8),
              inset -4px -4px 8px rgba(219, 39, 119, 0.25),
              0 12px 24px rgba(219, 39, 119, 0.12);
}
.p-clay-pill.blue {
  background: #bae6fd;
  color: #0369a1;
  box-shadow: inset 4px 4px 8px rgba(255, 255, 255, 0.8),
              inset -4px -4px 8px rgba(2, 132, 199, 0.25),
              0 12px 24px rgba(2, 132, 199, 0.12);
}
.p-clay-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #fed7aa;
  color: #c2410c;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  box-shadow: inset 3px 3px 6px rgba(255, 255, 255, 0.85),
              inset -3px -3px 6px rgba(234, 88, 12, 0.25),
              0 10px 20px rgba(234, 88, 12, 0.15);
}

/* 1.7 Skeuomorphism 经典拟物主义 */
.paper-skeuo-mockup {
  background: linear-gradient(180deg, #374151, #1f2937);
  padding: 20px 28px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 24px;
  border: 1px solid #4b5563;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 8px 24px rgba(0, 0, 0, 0.4);
}
.p-skeuo-knob {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, #9ca3af, #4b5563);
  box-shadow: inset 0 2px 2px rgba(255, 255, 255, 0.5),
              0 6px 12px rgba(0, 0, 0, 0.5);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.p-skeuo-knob-indicator {
  width: 4px;
  height: 18px;
  background: #f59e0b;
  border-radius: 2px;
  box-shadow: 0 0 6px #f59e0b;
  transform: rotate(35deg);
}
.p-skeuo-button {
  background: linear-gradient(180deg, #4b5563 0%, #1f2937 100%);
  border: 1px solid #111827;
  border-radius: 8px;
  padding: 10px 18px;
  color: #e5e7eb;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 4px 8px rgba(0,0,0,0.5);
  cursor: pointer;
}
.p-skeuo-light {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* 1.8 OLED Dark 纯粹暗黑 */
.paper-oled-mockup {
  background: #000000;
  padding: 20px 24px;
  border-radius: 12px;
  width: 100%;
  max-width: 420px;
}
.p-oled-card {
  background: #0b0c0e;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.p-oled-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #5eead4;
}
.p-oled-text {
  display: flex;
  flex-direction: column;
  flex: 1;
}
.p-oled-white {
  color: #f8fafc;
  font-size: 0.82rem;
  font-weight: 600;
}
.p-oled-gray {
  color: #64748b;
  font-size: 0.7rem;
}
.p-oled-tag {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.65rem;
  color: #94a3b8;
}

/* 1.9 Aurora UI 极光弥散 */
.paper-aurora-mockup {
  position: relative;
  width: 100%;
  max-width: 420px;
  height: 120px;
  background: #090a10;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.p-aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(35px);
  opacity: 0.6;
}
.p-aurora-blob.purple {
  width: 120px;
  height: 120px;
  background: #8b5cf6;
  top: -20px;
  left: 20px;
}
.p-aurora-blob.cyan {
  width: 100px;
  height: 100px;
  background: #06b6d4;
  bottom: -20px;
  right: 40px;
}
.p-aurora-blob.pink {
  width: 90px;
  height: 90px;
  background: #ec4899;
  top: 10px;
  right: 120px;
}
.p-aurora-card {
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 10px 22px;
  color: #fff;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

/* 1.10 Neumorphism 软浮雕 */
.paper-neumorph-mockup {
  background: #e0e5ec;
  padding: 24px 32px;
  border-radius: 16px;
  display: flex;
  gap: 20px;
  align-items: center;
}
.p-neu-box {
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #556270;
}
.p-neu-box.raised {
  background: #e0e5ec;
  box-shadow: 6px 6px 12px #a3b1c6, -6px -6px 12px #ffffff;
}
.p-neu-box.inset {
  background: #e0e5ec;
  box-shadow: inset 4px 4px 8px #a3b1c6, inset -4px -4px 8px #ffffff;
}

/* 1.11 Spatial UI (VisionOS) */
.paper-spatial-mockup {
  position: relative;
  width: 100%;
  max-width: 420px;
  height: 130px;
  background: radial-gradient(circle at center, #2d3748, #1a202c);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.p-spatial-layer {
  position: absolute;
  border-radius: 12px;
}
.p-spatial-layer.back {
  width: 280px;
  height: 70px;
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-16px) scale(0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.p-spatial-layer.mid {
  width: 310px;
  height: 80px;
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-8px) scale(0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.p-spatial-layer.front {
  position: relative;
  z-index: 3;
  width: 340px;
  height: 70px;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 16px 36px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
}
.p-spatial-specular {
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.7), transparent);
}

/* 1.12 Cyberpunk HUD */
.paper-cyber-mockup {
  background: #08090c;
  border: 1px solid #00f0ff;
  border-radius: 6px;
  padding: 16px 20px;
  width: 100%;
  max-width: 420px;
  font-family: "JetBrains Mono", Consolas, monospace;
  position: relative;
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.2);
}
.p-cyber-header {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(0, 240, 255, 0.3);
  padding-bottom: 6px;
  margin-bottom: 8px;
}
.p-cyber-glitch {
  color: #00f0ff;
  font-size: 0.75rem;
  font-weight: 800;
}
.p-cyber-badge {
  background: #ff0055;
  color: #fff;
  font-size: 0.6rem;
  padding: 1px 5px;
}
.p-cyber-body {
  font-size: 0.72rem;
  color: #94a3b8;
}
.p-cyber-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  margin-top: 6px;
  border-radius: 3px;
  overflow: hidden;
}
.p-cyber-bar-fill {
  width: 68%;
  height: 100%;
  background: #00f0ff;
  box-shadow: 0 0 8px #00f0ff;
}

/* 1.13 Paper & Ink 极简雅致纸感 */
.paper-paper-mockup {
  background: #fcfbf9;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 22px 28px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 3px 12px rgba(0,0,0,0.03);
}
.p-paper-stamp {
  font-size: 0.7rem;
  font-weight: 700;
  color: #8c7355;
  border-bottom: 1px solid rgba(140, 115, 85, 0.3);
  padding-bottom: 4px;
  margin-bottom: 8px;
}
.p-paper-prose {
  font-size: 0.85rem;
  line-height: 1.85;
  color: #201e1c;
}

/* =========================================================================
   2. 排版构图与交互定律微缩沙盒 (9 种)
   ========================================================================= */

/* 2.1 视觉层级 */
.paper-hierarchy-mockup {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: 440px;
}
.p-hier-primary {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.2;
}
.p-hier-secondary {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.5;
}
.p-hier-tertiary {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* 2.2 负空间 */
.paper-whitespace-mockup {
  width: 100%;
  max-width: 440px;
}
.p-ws-field {
  background: var(--bg-card);
  border: 1px dashed var(--border-strong);
  padding: 38px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}
.p-ws-core {
  text-align: center;
}
.p-ws-core span {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
}
.p-ws-core small {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* 2.3 8点栅格 */
.paper-grid-mockup {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 16px;
  border-radius: 10px;
}
.p-grid-ruler {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--accent-sage);
  font-family: monospace;
  border-bottom: 1px dashed var(--border-strong);
  padding-bottom: 4px;
  margin-bottom: 10px;
}
.p-grid-blocks {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}
.p-grid-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}
.p-grid-box.b-8 { height: 24px; width: 36px; }
.p-grid-box.b-16 { height: 36px; width: 44px; }
.p-grid-box.b-24 { height: 48px; width: 56px; }
.p-grid-box.b-32 { height: 56px; flex: 1; }

/* 2.4 格式塔亲密性 */
.paper-proximity-mockup {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 400px;
}
.p-prox-group {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 8px 12px;
  border-radius: 6px;
}
.p-prox-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.p-prox-input {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.p-prox-gap {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent-terracotta);
  text-align: center;
  margin: 14px 0;
}

/* 2.5 席克定律 */
.paper-hick-mockup {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 440px;
}
.p-hick-side {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 12px;
}
.p-hick-tag {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.p-hick-side.bad .p-hick-tag { color: var(--accent-terracotta); }
.p-hick-side.good .p-hick-tag { color: var(--accent-sage); }
.p-hick-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.p-hick-btns button {
  font-size: 0.65rem;
  padding: 4px;
  border: 1px solid var(--border-light);
  background: var(--bg-card-subtle);
}
.p-hick-primary {
  width: 100%;
  background: var(--text-primary);
  color: var(--bg-canvas);
  border: none;
  padding: 8px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.75rem;
  cursor: pointer;
}
.p-hick-more {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 6px;
}
.p-hick-divider {
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--text-faint);
}

/* 2.6 菲茨定律 */
.paper-fitts-mockup {
  width: 100%;
  max-width: 320px;
}
.p-fitts-screen {
  background: var(--bg-card);
  border: 2px solid var(--border-strong);
  border-radius: 18px;
  height: 160px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}
.p-fitts-bad-target {
  align-self: flex-start;
  background: rgba(184, 80, 66, 0.15);
  color: var(--accent-terracotta);
  border: 1px dashed var(--accent-terracotta);
  padding: 2px 6px;
  font-size: 0.6rem;
  border-radius: 4px;
}
.p-fitts-thumb-zone {
  background: rgba(90, 114, 98, 0.12);
  border-radius: 12px;
  padding: 8px;
  text-align: center;
}
.p-fitts-zone-label {
  display: block;
  font-size: 0.62rem;
  color: var(--accent-sage);
  margin-bottom: 4px;
  font-weight: 700;
}
.p-fitts-big-btn {
  width: 100%;
  height: 42px;
  background: var(--accent-sage);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 800;
  font-size: 0.8rem;
  cursor: pointer;
}

/* 2.7 多尔蒂门槛 */
.paper-doherty-mockup {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: 400px;
}
.p-doherty-action {
  display: flex;
  gap: 14px;
  align-items: center;
  width: 100%;
}
.p-doherty-btn {
  background: var(--text-primary);
  color: var(--bg-canvas);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.78rem;
  cursor: pointer;
}
.p-doherty-shimmer {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.shimmer-line {
  height: 8px;
  background: linear-gradient(90deg, var(--bg-card-subtle) 25%, var(--border-strong) 50%, var(--bg-card-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}
.shimmer-line.long { width: 100%; }
.shimmer-line.short { width: 60%; }
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.p-doherty-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-sage);
}

/* 2.8 峰终定律 */
.paper-peakend-mockup {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 420px;
}
.p-pe-curve {
  width: 100%;
  height: 70px;
  border-bottom: 2px solid var(--border-strong);
  border-left: 2px solid var(--border-strong);
  position: relative;
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  padding-bottom: 6px;
}
.p-pe-point.peak {
  position: absolute;
  left: 45%;
  top: 6px;
}
.p-pe-point.end {
  position: absolute;
  right: 12px;
  bottom: 12px;
}
.p-pe-balloon {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-primary);
  box-shadow: var(--shadow-subtle);
}
.p-pe-axis {
  font-size: 0.68rem;
  color: var(--text-muted);
}

/* 2.9 雅各布定律 */
.paper-jakob-mockup {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.p-jakob-navbar {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.p-jakob-logo {
  font-weight: 900;
  font-size: 0.8rem;
  color: var(--text-primary);
}
.p-jakob-search {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 4px 14px;
  font-size: 0.68rem;
  color: var(--text-muted);
}
.p-jakob-user {
  font-size: 0.7rem;
  color: var(--text-secondary);
}
.p-jakob-tip {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-align: center;
}

/* =========================================================================
   3. 经典高杠杆思维模型微缩沙盒 (15 种)
   ========================================================================= */

.paper-mental-mockup {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.p-m-caption {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: center;
}

/* 3.1 第一性原理 */
.layer-surface {
  background: rgba(184, 80, 66, 0.1);
  border: 1px dashed var(--accent-terracotta);
  color: var(--accent-terracotta);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
}
.p-m-arrow {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-sage);
}
.p-m-foundation {
  display: flex;
  gap: 8px;
}
.p-m-atom {
  background: var(--text-primary);
  color: var(--bg-canvas);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 700;
}

/* 3.2 逆向思维 */
.p-invert-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}
.p-invert-card {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  font-size: 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.p-invert-card.red {
  background: rgba(184, 80, 66, 0.1);
  border: 1px solid var(--accent-terracotta);
  color: var(--accent-terracotta);
}
.p-invert-card.green {
  background: rgba(90, 114, 98, 0.12);
  border: 1px solid var(--accent-sage);
  color: var(--accent-sage);
}
.p-invert-symbol {
  font-weight: 800;
  color: var(--text-faint);
}

/* 3.3 二阶效应 */
.p-second-dominoes {
  display: flex;
  align-items: center;
  gap: 8px;
}
.domino {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
}
.domino.alert {
  background: rgba(184, 80, 66, 0.12);
  border-color: var(--accent-terracotta);
  color: var(--accent-terracotta);
}
.domino-arrow {
  color: var(--text-faint);
  font-weight: 800;
}

/* 3.4 MECE 原则 */
.p-mece-container {
  display: flex;
  width: 100%;
  max-width: 360px;
  border: 2px solid var(--text-primary);
  border-radius: 8px;
  overflow: hidden;
}
.p-mece-block {
  flex: 1;
  padding: 14px;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
}
.p-mece-block.b1 {
  background: var(--bg-card);
  border-right: 1px solid var(--border-strong);
  color: var(--text-primary);
}
.p-mece-block.b2 {
  background: var(--bg-card-subtle);
  color: var(--text-primary);
}

/* 3.5 丰田 5 Whys */
.p-whys-funnel {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  max-width: 380px;
}
.p-why-step {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border-left: 3px solid var(--border-strong);
}
.p-why-step.s5 {
  background: rgba(90, 114, 98, 0.15);
  border-left: 3px solid var(--accent-sage);
  color: var(--accent-sage);
  font-weight: 700;
}

/* 3.6 奥卡姆剃刀 */
.p-razor-arena {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.p-razor-blade {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-terracotta);
}
.p-razor-shaved {
  display: flex;
  gap: 8px;
}
.shaved-item {
  font-size: 0.68rem;
  color: var(--text-faint);
  text-decoration: line-through;
}
.p-razor-core {
  background: var(--text-primary);
  color: var(--bg-canvas);
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
}

/* 3.7 汉隆剃刀 */
.p-hanlon-box {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 14px 20px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: 380px;
}
.p-hanlon-line.cross {
  color: var(--accent-terracotta);
  text-decoration: line-through;
  font-size: 0.75rem;
}
.p-hanlon-line.check {
  color: var(--accent-sage);
  font-weight: 700;
  font-size: 0.78rem;
}
.p-hanlon-arrow {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* 3.8 冰山模型 */
.p-iceberg-scene {
  width: 100%;
  max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  overflow: hidden;
}
.p-ice-tip {
  padding: 10px 14px;
  background: rgba(90, 114, 98, 0.1);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-sage);
  text-align: center;
}
.p-ice-waterline {
  font-size: 0.65rem;
  color: #3b82f6;
  text-align: center;
  background: rgba(59, 130, 246, 0.08);
  padding: 2px 0;
}
.p-ice-deep {
  padding: 12px 14px;
  background: var(--bg-card-subtle);
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.72rem;
  color: var(--text-secondary);
}

/* 3.9 帕累托 80/20 */
.p-pareto-lever {
  position: relative;
  width: 100%;
  max-width: 360px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.p-lever-bar {
  position: absolute;
  top: 50%;
  left: 10px;
  right: 10px;
  height: 4px;
  background: var(--text-primary);
  transform: rotate(-10deg);
}
.p-lever-fulcrum {
  position: absolute;
  top: 50%;
  left: 30%;
  color: var(--accent-sage);
  font-size: 1.2rem;
}
.p-lever-effort {
  position: relative;
  z-index: 2;
  background: var(--accent-sage);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 800;
}
.p-lever-load {
  position: relative;
  z-index: 2;
  background: var(--text-primary);
  color: var(--bg-canvas);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 800;
}

/* 3.10 熵增与耗散 */
.p-entropy-grid {
  display: flex;
  gap: 10px;
  width: 100%;
  max-width: 380px;
}
.p-ent-side {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.72rem;
}
.p-ent-side.closed {
  background: rgba(184, 80, 66, 0.08);
  border: 1px dashed var(--accent-terracotta);
  color: var(--accent-terracotta);
}
.p-ent-side.open {
  background: rgba(90, 114, 98, 0.1);
  border: 1px solid var(--accent-sage);
  color: var(--accent-sage);
}

/* 3.11 反馈回路 */
.p-loop-circle {
  display: flex;
  gap: 12px;
  align-items: center;
}
.p-loop-node {
  background: var(--bg-card);
  border: 1.5px solid var(--border-strong);
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
}
.p-loop-node.n3 {
  background: var(--accent-sage);
  color: #fff;
  border-color: var(--accent-sage);
}

/* 3.12 能力圈 */
.p-circle-target {
  display: flex;
  justify-content: center;
}
.p-circle-outer {
  width: 260px;
  height: 110px;
  border: 1px dashed var(--border-strong);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6px;
  background: var(--bg-card-subtle);
}
.p-circle-outer-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.p-circle-inner {
  background: var(--accent-ink);
  color: var(--bg-canvas);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
}

/* 3.13 沉没成本 */
.p-cost-scale {
  display: flex;
  gap: 12px;
  width: 100%;
  max-width: 380px;
}
.p-cost-box {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.72rem;
}
.p-cost-box.sunk {
  background: var(--bg-card-subtle);
  border: 1px dashed var(--border-strong);
  color: var(--text-muted);
}
.p-cost-box.opp {
  background: var(--accent-sage);
  color: #fff;
}

/* 3.14 破窗效应 */
.p-window-frame {
  display: flex;
  gap: 10px;
  align-items: center;
}
.p-win-pane {
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
}
.p-win-pane.broken {
  background: rgba(184, 80, 66, 0.1);
  border: 1px dashed var(--accent-terracotta);
  color: var(--accent-terracotta);
}
.p-win-tool {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-sage);
}
.p-win-pane.fixed {
  background: rgba(90, 114, 98, 0.12);
  border: 1px solid var(--accent-sage);
  color: var(--accent-sage);
}

/* 3.15 幸存者偏差 */
.p-survivor-plane {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: 380px;
}
.plane-wing-dots {
  background: rgba(184, 80, 66, 0.1);
  border: 1px dashed var(--accent-terracotta);
  color: var(--accent-terracotta);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
}
.plane-engine-shield {
  background: rgba(90, 114, 98, 0.15);
  border: 1px solid var(--accent-sage);
  color: var(--accent-sage);
  padding: 8px 12px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.72rem;
  font-weight: 700;
}

/* 发给 AI 的精密提词指令卡片 (Prompt Card) */
.prompt-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-float);
  margin-top: 14px;
}

.prompt-card-header {
  background: var(--bg-card-subtle);
  padding: 10px 18px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.prompt-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-copy-prompt {
  background: var(--text-main);
  color: var(--bg-card);
  border: none;
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.18s ease;
}

.btn-copy-prompt:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-copy-prompt:active {
  transform: translateY(0);
}

.prompt-card-body {
  padding: 18px 20px;
}

.prompt-code-box {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-main);
  background: transparent;
  white-space: pre-wrap;
  word-break: break-word;
  user-select: text;
}

.prompt-tip {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.prompt-config-bar {
  background: var(--bg-hover);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prompt-field-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.prompt-field-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.prompt-field-hint {
  font-weight: normal;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.prompt-text-input {
  width: 100%;
  padding: 7px 11px;
  font-size: 0.82rem;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
}

.prompt-text-input:focus {
  border-color: var(--primary, #3b82f6);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

.prompt-preview-header {
  margin-bottom: 6px;
}

.btn-copied-success {
  background: #10b981 !important;
  color: #fff !important;
}

/* ============================================================
   3. 痛点速查手册专属视图 (The Translator View)
   ============================================================ */
.translator-view {
  width: 100%;
  max-width: 820px;
  animation: fadeInArticle 0.22s ease-out;
}

.translator-banner {
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 24px;
}

.translator-back-btn {
  background: none;
  border: 1px solid var(--border-light);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  margin-bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.translator-back-btn:hover {
  background: var(--bg-hover);
  color: var(--text-main);
}

.trans-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.trans-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.translator-cards-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.trans-item-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-subtle);
  transition: all 0.2s ease;
}

.trans-item-card:hover {
  border-color: var(--border-strong);
}

.trans-phrase-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.trans-phrase-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  background: #fee2e2;
  color: #991b1b;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

body.theme-dark .trans-phrase-label {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.trans-phrase-text {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
}

.trans-diagnosis-box {
  background: var(--bg-card-subtle);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.trans-terms-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.trans-term-pill {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 4px 10px;
  background: var(--bg-hover);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  user-select: none;
}

.trans-term-pill:hover {
  background: var(--bg-card);
  border-color: var(--text-main);
  color: var(--text-main);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.trans-term-pill .term-arrow {
  font-size: 0.72rem;
  opacity: 0.6;
  transition: opacity 0.15s ease;
}

.trans-term-pill:hover .term-arrow {
  opacity: 1;
}

.trans-prompt-box {
  background: var(--bg-app);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-top: 10px;
}

.trans-prompt-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.trans-prompt-text {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-main);
  white-space: pre-wrap;
}

/* ============================================================
   4. 模态弹窗 (Modal System)
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 26, 20, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeInModal 0.15s ease-out;
}

@keyframes fadeInModal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-paper {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 580px;
  box-shadow: var(--shadow-float);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-head {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}

.modal-close {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}

.modal-close:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.modal-form {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.paper-input, .paper-select, .paper-textarea {
  width: 100%;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 0.88rem;
  color: var(--text-main);
  outline: none;
  font-family: inherit;
  transition: all 0.15s ease;
}

.paper-input:focus, .paper-select:focus, .paper-textarea:focus {
  border-color: var(--border-focus);
  background: var(--bg-card);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

.btn-primary {
  background: var(--text-main);
  color: var(--bg-card);
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-text {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 8px 14px;
  font-size: 0.85rem;
  cursor: pointer;
}

.btn-text:hover {
  color: var(--text-main);
}

/* 微测题目排版 */
.quiz-q-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 20px;
  color: var(--text-main);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.quiz-option-btn {
  text-align: left;
  padding: 14px 16px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card-subtle);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.18s ease;
}

.quiz-option-btn:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-focus);
}

.quiz-option-btn.selected-correct {
  background: #dcfce7;
  border-color: #22c55e;
  color: #14532d;
  font-weight: 600;
}

.quiz-option-btn.selected-wrong {
  background: #fee2e2;
  border-color: #ef4444;
  color: #991b1b;
}

body.theme-dark .quiz-option-btn.selected-correct {
  background: rgba(34, 197, 94, 0.2);
  border-color: #22c55e;
  color: #86efac;
}

body.theme-dark .quiz-option-btn.selected-wrong {
  background: rgba(239, 68, 68, 0.2);
  border-color: #ef4444;
  color: #fca5a5;
}

.quiz-feedback {
  background: var(--bg-card-subtle);
  border-left: 3px solid var(--text-main);
  padding: 12px 16px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 14px;
}

/* ============================================================
   5. 纸感 Toast 消息提示
   ============================================================ */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text-main);
  color: var(--bg-card);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-float);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast-notice.show {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   6. 响应式布局优化 (Mobile / Tablet)
   ============================================================ */
@media (max-width: 860px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-100%);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.15);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 9;
  }

  .sidebar-backdrop.open {
    display: block;
  }

  .mobile-topbar {
    display: flex;
  }

  .main-canvas {
    padding: 16px 20px 60px 20px;
  }

  .article-title {
    font-size: 1.8rem;
  }

  .contrast-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   7. P2 核心升级：口语症状、避坑红线与 Prompt Composer 样式
   ============================================================ */

/* 7.1 精读页典型口语吐槽 (Symptoms) */
.symptoms-quote-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.symptom-quote-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-hover);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.88rem;
  color: var(--text-main);
  transition: all 0.15s ease;
}

.symptom-quote-card:hover {
  background: var(--bg-card);
  border-color: var(--primary, #3b82f6);
  transform: translateX(4px);
}

.symptom-quote-mark {
  font-size: 1.05rem;
  flex-shrink: 0;
}

.symptom-quote-text {
  font-style: italic;
  font-weight: 500;
  line-height: 1.5;
}

/* 7.2 适用边界红线警戒 (Avoid When) */
.avoid-warning-card {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-left: 4px solid #ef4444;
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-top: 8px;
}

.avoid-warning-header {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #dc2626;
  font-size: 0.84rem;
  font-weight: 600;
  margin-bottom: 6px;
}

[data-theme="dark"] .avoid-warning-header {
  color: #f87171;
}

.avoid-warning-body {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* 7.3 痛点手册 111 条症状穿透矩阵 (Symptom Directory) */
.symptom-directory-section {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px dashed var(--border-strong);
}

.symptom-search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 16px 0 20px 0;
}

.symptom-search-input {
  flex: 1;
  padding: 10px 14px;
  font-size: 0.86rem;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-main);
  outline: none;
  transition: all 0.15s ease;
}

.symptom-search-input:focus {
  border-color: var(--primary, #3b82f6);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

.symptom-group-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 20px 0 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.symptom-matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
  margin-bottom: 24px;
}

.symptom-matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
}

.symptom-matrix-card:hover {
  border-color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.symptom-matrix-text {
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.5;
  font-weight: 500;
}

.symptom-matrix-target {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.symptom-matrix-badge {
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-hover);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
}

/* 7.4 侧栏加入组合小动作 & 顶部加入组合按钮 */
.nav-item-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-stash-pill {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  background: var(--bg-hover);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
}

.btn-stash-pill:hover {
  background: var(--text-main);
  color: var(--bg-card);
  border-color: var(--text-main);
}

.btn-stash-pill.active {
  background: var(--text-main);
  color: var(--bg-card);
  border-color: var(--text-main);
  font-weight: 600;
}

.btn-stash-toggle.stashed {
  background: var(--text-main);
  color: var(--bg-card);
  border-color: var(--text-main);
}

/* 7.5 底部多原则复合工作台浮动 Dock (Composer Dock) */
.composer-dock {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 8px 16px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.16);
  z-index: 1000;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
  opacity: 0;
  pointer-events: none;
  max-width: 90vw;
}

.composer-dock.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.composer-dock-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.composer-dock-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.composer-dock-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.composer-dock-count {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-hover);
  padding: 2px 6px;
  border-radius: 999px;
}

.composer-stashed-pills {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  max-width: 420px;
  padding: 2px 0;
}

.composer-pill-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-hover);
  border: 1px solid var(--border-strong);
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.76rem;
  color: var(--text-main);
  white-space: nowrap;
}

.composer-pill-item .btn-remove-pill {
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  padding: 0;
  margin-left: 2px;
}

.composer-pill-item .btn-remove-pill:hover {
  color: #ef4444;
}

.composer-dock-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-clear-dock {
  background: transparent;
  border: none;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.btn-clear-dock:hover {
  color: #ef4444;
}

.btn-open-composer {
  background: var(--text-main);
  color: var(--bg-card);
  border: none;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-open-composer:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* 7.6 复合合成模态框 */
.modal-dialog-lg {
  max-width: 760px;
}

.composer-layer-group {
  margin-bottom: 16px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.composer-layer-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.composer-layer-item {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
  padding-left: 12px;
  border-left: 2px solid var(--border-strong);
  margin-bottom: 6px;
}

/* 问题入口与紧凑的操作区 */
.problem-entry { padding: 0 18px 12px; }
.problem-entry .footer-btn { width: 100%; background: var(--bg-active); border: 1px solid var(--border-strong); border-radius: var(--radius-md); }
.problem-start { margin: 24px 0 32px; padding: 20px; background: var(--bg-card-subtle); border: 1px solid var(--border-light); border-radius: var(--radius-lg); }
.problem-start h2 { font-size: 1.1rem; }
.problem-start p { font-size: .88rem; color: var(--text-secondary); margin: 6px 0 14px; }
.problem-shortcuts { display: flex; flex-wrap: wrap; gap: 10px; }
.problem-shortcut { padding: 8px 14px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--bg-card); color: var(--text-main); font: inherit; font-size: .88rem; cursor: pointer; }
.problem-shortcut:hover { background: var(--bg-active); }
.problem-shortcut:focus-visible { outline: 2px solid var(--accent-terracotta); outline-offset: 3px; }
.article-top-nav, .article-controls, .prompt-card-header { flex-wrap: wrap; gap: 10px; }
.modal-backdrop { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.45); align-items: center; justify-content: center; padding: 20px; }
.modal-dialog { width: 100%; max-height: 90vh; overflow-y: auto; background: var(--bg-card); color: var(--text-main); border-radius: var(--radius-xl); box-shadow: var(--shadow-float); }
.modal-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 20px; border-bottom: 1px solid var(--border-light); }
.modal-subtitle { font-size: .85rem; color: var(--text-secondary); margin-top: 6px; }
@media (max-width: 600px) {
  .problem-start { padding: 16px; }
  .prompt-card-header { align-items: flex-start; }
  .article-controls { width: 100%; }
  .composer-dock-inner, .composer-dock-left { flex-wrap: wrap; }
  .composer-dock { max-width: calc(100vw - 24px); }
}

/* ============================================================
   8. 复合冲突告警与零结果推荐样式
   ============================================================ */
.composer-conflict-banner {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-left: 4px solid #f59e0b;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.composer-conflict-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  font-weight: 700;
  color: #b45309;
}

[data-theme="dark"] .composer-conflict-title {
  color: #fbbf24;
}

.composer-conflict-desc {
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.zero-fallback-container {
  max-width: 680px;
  margin: 40px auto;
  text-align: center;
}

.zero-fallback-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.zero-fallback-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.zero-fallback-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
  text-align: left;
}

.zero-fallback-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  cursor: pointer;
  transition: all 0.18s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.zero-fallback-card:hover {
  border-color: var(--primary, #3b82f6);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.zero-fallback-card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.zero-fallback-card-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.cross-category-hint {
  background: var(--bg-hover);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cross-category-hint a, .cross-category-hint button {
  color: var(--primary, #3b82f6);
  background: none;
  border: none;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}