:root {
  --color-bg: #f4f7fb;            /* 原 #f8fafc，页面底收一档 */
  --color-surface: #ffffff;
  --color-surface-2: #f1f5f9;    /* 新增：S3 浮起层 */
  --color-surface-hover: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #475569;  /* 原 #64748b，让位给弱级 */
  --color-text-muted: #5b6a80;      /* 修复：白卡上 5.50:1（原 2.56:1） */
  --color-border: #e2e8f0;
  --color-hairline: #e6ebf2;        /* 新增：行间发丝线，比 border 轻 */
  --color-primary: #C41E3A;
  --color-primary-light: #E03A52;
  --color-primary-dark: #8B0000;
  --color-primary-bg: rgba(196, 30, 58, 0.08);
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-success-bg: #dcfce7;
  --color-success-text: #16a34a;
  --color-warning-bg: #fef3c7;
  --color-warning-text: #b45309;
  --color-danger-bg: #fee2e2;
  --color-danger-text: #dc2626;
  --color-danger-text-dark: #7f1d1d;
  --color-info-bg: #e2e8f0;
  --color-info-text: #64748b;
  --color-on-primary: #ffffff;
  --color-navbar-bg: rgba(255, 255, 255, 0.85);
  --color-code-bg: #1e293b;
  --color-code-text: #e2e8f0;
  --color-prompt-bg: #261519;
  --color-prompt-text: #f6e3e6;
  --color-copy-btn-bg: rgba(255, 255, 255, 0.1);
  --color-copy-btn-hover-bg: rgba(255, 255, 255, 0.2);
  --color-copy-btn-text: #F0556A;
  --color-on-entry-card: #ffffff;
  --color-on-entry-card-muted: rgba(255, 255, 255, 0.75);
  --color-entry-card-btn-text: #C41E3A;
  --color-entry-card-graph-btn: #C41E3A;
  /* ===== 杨梅AI百科网 · 品牌点缀色（2026-09-11 新增，深浅模式通用，仅作点缀不覆盖主题） ===== */
  --color-yangmei-red: #C41E3A;        /* 杨梅红：logo/品牌文字/主按钮hover点缀 */
  --color-yangmei-red-soft: rgba(196, 30, 58, 0.12);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
}

[data-theme="dark"] {
  --color-bg: #080b16;              /* 原 #0a0e1a，更深一档 */
  --color-surface: #141a2e;         /* 保留 */
  --color-surface-2: #1b2237;       /* 新增 */
  --color-surface-hover: #1e2638;
  --color-text: #f1f5f9;
  --color-text-secondary: #a7b4c8;  /* 8.22:1 */
  --color-text-muted: #8d9bb0;      /* 修复：6.12:1（原 4.05:1） */
  --color-border: #2a3142;
  --color-hairline: #232b3e;        /* 新增 */
  --color-primary: #E03A52;
  --color-primary-light: #F0556A;
  --color-primary-dark: #C41E3A;
  --color-primary-bg: rgba(196,30,58,0.15);
  --color-success-bg: rgba(16, 185, 129, 0.15);
  --color-success-text: #6ee7b7;
  --color-warning-bg: rgba(245, 158, 11, 0.15);
  --color-warning-text: #fcd34d;
  --color-danger-bg: rgba(239, 68, 68, 0.15);
  --color-danger-text: #fca5a5;
  --color-danger-text-dark: #fca5a5;
  --color-info-bg: rgba(148, 163, 184, 0.12);
  --color-info-text: #94a3b8;
  --color-on-primary: #ffffff;
  --color-navbar-bg: rgba(10, 14, 26, 0.85);
  --color-code-bg: #0d1117;
  --color-code-text: #e2e8f0;
  --color-prompt-bg: #261519;
  --color-prompt-text: #f6e3e6;
  --color-copy-btn-bg: rgba(255, 255, 255, 0.08);
  --color-copy-btn-hover-bg: rgba(255, 255, 255, 0.15);
  --color-copy-btn-text: #F0556A;
  --color-on-entry-card: #ffffff;
  --color-on-entry-card-muted: rgba(255, 255, 255, 0.8);
  --color-entry-card-btn-text: #E03A52;
  --color-entry-card-graph-btn: #C41E3A;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.24s ease-out, color 0.24s ease-out;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
  outline: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--color-navbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  /* 分隔线挪到 .brand-strip 下沿（2026-09-03 修「导航与站名之间一条异色横杠」）：
     这条 1px 边框正好落在两个元素的接缝上（实测 y=63），是色差杠的一半来源；
     页眉现在是「导航 + 站名条」两块，线画在整块页眉的下沿才不割裂。 */
  border-bottom: none;
  z-index: 1000;
  transition: background-color 0.24s ease-out, border-color 0.24s ease-out;
}

.navbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* 导航栏 logo：锁定横向排布。
   真因不是 flex-direction 丢了（实测各页都还是 row），而是宽度不够被 flex 压坑：
   `.container` 封顶 1200px，减左右 padding 只剩 1152px 可用；而 12 个菜单项（含新增的学习中心 / 创意工坊）
   nowrap 实测要 1170px，已经超了；`justify-content: space-between` 下谁都可以缩，logo 的 min-content 只有一个字宽（33px），
   于是被压到 65px——“AI百科”就一个字一行竖着排了。首页看得到正常是因为 index.html 里用两条 !important 把菜单压小了。
   这里把 logo 锁成不可压缩 + 不许换行，任何页面样式都扳不动它。 */
.navbar-logo {
  display: flex !important;
  flex-flow: row nowrap !important;
  position: absolute !important;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  min-width: max-content;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text);
}

/* 两个 <span>（图标与站名）也不得内部折行 */
.navbar-logo > span {
  white-space: nowrap;
  flex: 0 0 auto;
}

.navbar-logo-icon {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #C41E3A, #E03A52);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-on-primary);
  font-size: 18px;
}

/* ===== 品牌图标（2026-09-03 改版）=====
   新图标是抠掉绿底的圆角方形白卡片（源图 2048×2048，成品 256×256 透明 PNG，
   抠图脚本 `_dev/抠图-品牌图标.js` 可重跑）。
   尺寸 40px：64px 高的导航栏里上下一共分约 12px 边距，不顶不空。
   旧的 `.navbar-logo-icon` 规则原样留着没删（现在没人引用了），
   要回到纯 CSS 方块 logo，把 nav-component.js 里那行 <img> 换回原来的 span 即可。 */
.navbar-logo-img {
  display: block;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  object-fit: contain;
  border-radius: 11px;
  box-shadow: 0 0 0 1px var(--color-border), 0 2px 8px -3px rgba(15, 23, 42, .45);
  transition: transform .25s ease-out, box-shadow .25s ease-out;
}
.navbar-logo:hover .navbar-logo-img {
  transform: translateY(-1px) scale(1.04);
  box-shadow: 0 0 0 1px var(--color-primary-light), 0 6px 14px -6px rgba(196, 30, 58, .5);
}

/* 长站名：贴在导航栏下沿居中，自己占一行高（所以不会遮住页面内容）。
   不用 fixed，是为了不去碰各页已有的 sticky/滚动偏移；滚动时它随正文一起上去。 */
.brand-strip {
  position: relative;
  z-index: 900;
  margin-top: 4px;             /* 导航栏已为relative占文档流，仅留8px安全间距 */
  /* 与导航栏共用同一层磨砂底（2026-09-03 修异色横杠）。
     真因不是 margin/border 撑出缝——实测 navbar 下沿 64px、本元素上沿 64px，缝隙本来就是 0；
     是这一条 37px 高的站名带没有底，直接把页面背景（模块页是背景图最淡的一档遮罩）露了出来，
     而上面 64px 是 85% 不透明的磨砂导航，于是 y=64 处出现台阶：
       暗色 导航 rgb(18,21,34) → 站名带 rgb(59,65,77) → 正文 rgb(23,27,54)
       亮色 导航 rgb(253,254,255) → 站名带 rgb(244,248,253) → 正文 rgb(250,252,255)
     补上和导航一模一样的 background + backdrop-filter，两块就是同一个面，接缝自动消失；
     分隔线由导航下沿改画到这里（整块页眉的下沿）。 */
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
  transition: background-color 0.24s ease-out;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 4px 16px 6px;
  pointer-events: none;        /* 纯展示，不吃任何点击 */
}
.brand-strip-text {
  font-family: var(--font-sans);
  font-size: clamp(10px, 1vw, 12px);
  font-weight: 600;
  letter-spacing: .15em;
  white-space: nowrap;
  color: var(--color-text-secondary);
}
.brand-strip-en {
  font-family: var(--font-apple, var(--font-sans));
  font-size: clamp(9px, 0.9vw, 11px);
  font-weight: 500;
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--color-text-muted);
  opacity: 0.7;
}
.brand-strip-rule {
  display: none;
}
.brand-strip-rule:last-child {
  transform: scaleX(-1);
}
/* 不支持 background-clip:text 的浏览器自动回到上面的素色，不会出现“文字隐身” */
@supports (-webkit-background-clip: text) or (background-clip: text) {
  .brand-strip-text {
    background-image: linear-gradient(90deg, #8B0000, #8B0000 45%, #8B0000);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
  [data-theme="dark"] .brand-strip-text {
    background-image: linear-gradient(90deg, #E03A52, #E03A52 45%, #F0556A);
  }
}
/* 窄屏：字缩小 + 收紧字距，保证 17 个字不溢出（560px 以下两侧饰线直接收起） */
@media (max-width: 900px) {
  .brand-strip {
    gap: 8px;
    padding: 7px 12px 6px;
  }
  .brand-strip-text {
    font-size: clamp(10px, 2.7vw, 12px);
    letter-spacing: .1em;
  }
  .brand-strip-rule {
    flex-basis: 24px;
  }
}
@media (max-width: 560px) {
  .brand-strip-rule {
    display: none;
  }
}

.navbar-menu {
  display: flex;
  align-items: center;
  /* 与首页统一（首页早就用两条 !important 把菜单压小了，所以只它一个页看不出问题）：
     12 项菜单按原尺寸要 1170px，而 .container 封顶 1200 只剩 1152 可用，
     不让 logo 担误就得有人担误——这里把菜单压到能装下，比把最后一项藏起来强。
     要恢复原尺寸：删掉下面 gap 与 .navbar-link 里的 padding / font-size 三行即可（溢出时会自动变成横滑）。 */
  gap: 4px;
  /* logo 锁住不再让位后，12 项菜单（实测 1170px）在 1152px 轨道里会顶出右边界。
     菜单项本身一律不改（尺寸/颜色/间距保持原样），只给容器一个逃生口：
     允许收缩 + 横向滑动，宽屏完整显示时看不出区别，窗口不够宽时最后一项变成可滑到而不是被切掉。 */
  flex: 1 1 auto;
  min-width: 0;
  justify-content: center;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.navbar-menu::-webkit-scrollbar {
  display: none;
}

.navbar-link {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.24s ease-out;
  cursor: pointer;
}

.navbar-link:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.navbar-link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.theme-toggle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  flex-shrink: 0;
  overflow: visible;
  padding: 0;
  margin: 0;
  /* 浅色模式：半透明玻璃背景 */
  background: rgba(0, 0, 0, 0.06);
  color: #374151;
  border: 1px solid rgba(0, 0, 0, 0.10);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.24s ease-out, border-color 0.24s ease-out, box-shadow 0.24s ease-out, color 0.24s ease-out;
}
.theme-toggle .icon-svg {
  width: 19px;
  height: 19px;
  display: block;
  flex-shrink: 0;
  color: #374151;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* 深色模式：半透明玻璃背景 */
[data-theme="dark"] .theme-toggle {
  background: rgba(255, 255, 255, 0.08);
  color: #E5E7EB;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
[data-theme="dark"] .theme-toggle .icon-svg {
  color: #E5E7EB;
}
.theme-toggle:hover {
  background: rgba(196, 30, 58, 0.12);
  border-color: rgba(196, 30, 58, 0.45);
  color: #E03A52;
  box-shadow: 0 0 12px rgba(196, 30, 58, 0.25), inset 0 0 8px rgba(196, 30, 58, 0.08);
}
[data-theme="dark"] .theme-toggle:hover {
  background: rgba(224, 58, 82, 0.15);
  border-color: rgba(224, 58, 82, 0.5);
  color: #F0556A;
  box-shadow: 0 0 14px rgba(224, 58, 82, 0.3), inset 0 0 10px rgba(224, 58, 82, 0.1);
}
.theme-toggle:active {
  transform: scale(0.94);
  background: rgba(196, 30, 58, 0.18);
}
/* hover提示文字 - 小巧深色浮层 */
.theme-toggle::after {
  content: "切换深浅模式";
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: #1e293b;
  color: #f1f5f9;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease-out, transform 0.18s ease-out, visibility 0.18s;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: 1000;
  letter-spacing: 0.3px;
}
.theme-toggle::before {
  content: "";
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-bottom-color: #1e293b;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease-out, visibility 0.18s;
  pointer-events: none;
  z-index: 1000;
}
.theme-toggle:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.theme-toggle:hover::before {
  opacity: 1;
  visibility: visible;
}
@media (max-width: 768px) {
  .theme-toggle {
    width: 32px;
    height: 32px;
  }
  .theme-toggle .icon-svg {
    width: 17px;
    height: 17px;
  }
  .theme-toggle::after,
  .theme-toggle::before {
    display: none;
  }
}

.hero {
  position: relative;
  padding: 120px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(196, 30, 58, 0.15), transparent),
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(139, 0, 0, 0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(196, 30, 58, 0.10), transparent);
}

[data-theme="dark"] .hero-bg {
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(196, 30, 58, 0.2), transparent),
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(139, 0, 0, 0.12), transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(196, 30, 58, 0.10), transparent);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(196, 30, 58, 0.2);
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #0f172a 0%, #8B0000 50%, #8B0000 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .hero-title {
  background: linear-gradient(135deg, #f1f5f9 0%, #E03A52 50%, #F0556A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-search {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.hero-search .hero-search-input {
  width: 100%;
  height: 56px;
  padding: 0 56px 0 52px !important;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 16px !important;
  line-height: 1.5;
  box-shadow: var(--shadow-md);
  transition: all 0.24s ease-out;
}

.hero-search .hero-search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.12), var(--shadow-md);
}

.hero-search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

.hero-search-btn {
  position: absolute;
  right: 6px;
  top: 6px;
  height: 44px;
  padding: 0 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, #C41E3A, #8B0000);
  color: var(--color-on-primary);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.24s ease-out;
}

.hero-search-btn:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 12px rgba(196, 30, 58, 0.35);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 0;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text);
  background: linear-gradient(135deg, #C41E3A, #E03A52);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.section {
  padding: 64px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.tip-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 28px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 48px;
}

/* 搜索下拉打开时，让 tip-card 透传点击，避免遮挡搜索结果交互 */
.tip-card.search-dropdown-open {
  pointer-events: none;
}

.tip-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

[data-theme="dark"] .tip-icon {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.1));
}

.tip-content {
  flex: 1;
}

.tip-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-warning);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.tip-text {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.5;
}

.tip-tag {
  flex-shrink: 0;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 600;
}

.paths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.path-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all 0.24s ease-out;
  cursor: pointer;
}

.path-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.path-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.path-icon.emerald {
  background: linear-gradient(135deg, #d1fae5, #a7f3d0);
  color: #059669;
}
.path-icon.sky {
  background: linear-gradient(135deg, #fdecee, #f6d6da);
  color: #b03a44;
}
.path-icon.violet {
  background: linear-gradient(135deg, #ede9fe, #ddd6fe);
  color: #8B0000;
}

[data-theme="dark"] .path-icon.emerald {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.1));
}
[data-theme="dark"] .path-icon.sky {
  background: linear-gradient(135deg, rgba(196, 30, 58, 0.10), rgba(196, 30, 58, 0.10));
}
[data-theme="dark"] .path-icon.violet {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(124, 58, 237, 0.1));
}

.path-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.path-target {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.path-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.path-step {
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--color-surface-hover);
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.module-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all 0.24s ease-out;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity 0.24s ease-out;
}

.module-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.module-card:hover::before {
  opacity: 1;
}

.module-card.indigo::before { background: linear-gradient(90deg, #C41E3A, #E03A52); }
.module-card.amber::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.module-card.violet::before { background: linear-gradient(90deg, #8B0000, #E03A52); }
.module-card.emerald::before { background: linear-gradient(90deg, #10b981, #34d399); }
.module-card.rose::before { background: linear-gradient(90deg, #f43f5e, #fb7185); }
.module-card.sky::before { background: linear-gradient(90deg, #0ea5e9, #38bdf8); }
.module-card.orange::before { background: linear-gradient(90deg, #f97316, #fb923c); }
.module-card.teal::before { background: linear-gradient(90deg, #14b8a6, #2dd4bf); }
.module-card.cyan::before { background: linear-gradient(90deg, #06b6d4, #F0556A); }
.module-card.red::before { background: linear-gradient(90deg, #ef4444, #f87171); }
.module-card.lime::before { background: linear-gradient(90deg, #84cc16, #a3e635); }
.module-card.yellow::before { background: linear-gradient(90deg, #eab308, #facc15); }
.module-card.fuchsia::before { background: linear-gradient(90deg, #d946ef, #e879f9); }
.module-card.slate::before { background: linear-gradient(90deg, #64748b, #94a3b8); }

.module-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.module-card.indigo .module-icon { background: rgba(196, 30, 58, 0.08); color: #C41E3A; }
.module-card.amber .module-icon { background: #fffbeb; color: #f59e0b; }
.module-card.violet .module-icon { background: #f5f3ff; color: #8B0000; }
.module-card.emerald .module-icon { background: #ecfdf5; color: #10b981; }
.module-card.rose .module-icon { background: #fff1f2; color: #f43f5e; }
.module-card.sky .module-icon { background: #f0f9ff; color: #0ea5e9; }
.module-card.orange .module-icon { background: #fff7ed; color: #f97316; }
.module-card.teal .module-icon { background: #f0fdfa; color: #14b8a6; }
.module-card.cyan .module-icon { background: #ecfeff; color: #06b6d4; }
.module-card.red .module-icon { background: #fef2f2; color: #ef4444; }
.module-card.lime .module-icon { background: #f7fee7; color: #84cc16; }
.module-card.yellow .module-icon { background: #fefce8; color: #eab308; }
.module-card.fuchsia .module-icon { background: #fdf4ff; color: #d946ef; }
.module-card.slate .module-icon { background: #f8fafc; color: #64748b; }

[data-theme="dark"] .module-card.indigo .module-icon { background: rgba(196, 30, 58, 0.15); }
[data-theme="dark"] .module-card.amber .module-icon { background: rgba(245, 158, 11, 0.15); }
[data-theme="dark"] .module-card.violet .module-icon { background: rgba(124, 58, 237, 0.15); }
[data-theme="dark"] .module-card.emerald .module-icon { background: rgba(16, 185, 129, 0.15); }
[data-theme="dark"] .module-card.rose .module-icon { background: rgba(244, 63, 94, 0.15); }
[data-theme="dark"] .module-card.sky .module-icon { background: rgba(14, 165, 233, 0.15); }
[data-theme="dark"] .module-card.orange .module-icon { background: rgba(249, 115, 22, 0.15); }
[data-theme="dark"] .module-card.teal .module-icon { background: rgba(20, 184, 166, 0.15); }
[data-theme="dark"] .module-card.cyan .module-icon { background: rgba(6, 182, 212, 0.15); }
[data-theme="dark"] .module-card.red .module-icon { background: rgba(239, 68, 68, 0.15); }
[data-theme="dark"] .module-card.lime .module-icon { background: rgba(132, 204, 22, 0.15); }
[data-theme="dark"] .module-card.yellow .module-icon { background: rgba(234, 179, 8, 0.15); }
[data-theme="dark"] .module-card.fuchsia .module-icon { background: rgba(217, 70, 239, 0.15); }
[data-theme="dark"] .module-card.slate .module-icon { background: rgba(100, 116, 139, 0.15); }

.module-priority {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.module-priority.P0 { background: #fef2f2; color: #ef4444; }
.module-priority.P1 { background: #fffbeb; color: #f59e0b; }
.module-priority.P2 { background: #f0fdf4; color: #22c55e; }

[data-theme="dark"] .module-priority.P0 { background: rgba(239, 68, 68, 0.15); }
[data-theme="dark"] .module-priority.P1 { background: rgba(245, 158, 11, 0.15); }
[data-theme="dark"] .module-priority.P2 { background: rgba(34, 197, 94, 0.15); }

.module-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.module-subtitle {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.module-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.module-phase {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 600;
}

.progress-board {
  padding: 32px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-hover) 100%);
  border: 1px solid var(--color-border);
}

.progress-board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.progress-board-title {
  font-size: 20px;
  font-weight: 800;
}

.progress-overall {
  display: flex;
  align-items: center;
  gap: 24px;
}

.progress-ring {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}

.progress-ring-svg {
  transform: rotate(-90deg);
}

.progress-ring-bg {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 8;
}

.progress-ring-fill {
  fill: none;
  stroke: url(#progressGradient);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s ease-out;
}

.progress-ring-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.progress-ring-num {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, #C41E3A, #E03A52);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.progress-ring-label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: -2px;
}

.progress-stats {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.progress-stat {
  text-align: center;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.progress-stat-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text);
}

.progress-stat-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.progress-modules {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.progress-module-dot {
  height: 8px;
  border-radius: 4px;
  background: var(--color-border);
  transition: background 0.24s ease-out;
}

.progress-module-dot.completed {
  background: linear-gradient(90deg, #C41E3A, #E03A52);
}

.progress-module-dot.in-progress {
  background: linear-gradient(90deg, #C41E3A, var(--color-border));
}

.progress-module-dot:hover {
  transform: scaleY(1.5);
}

.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  background: var(--color-surface-2);
}

.footer-text {
  font-size: 14px;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 16px;
}

.footer-link {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.24s ease-out;
}

.footer-link:hover {
  color: var(--color-primary);
}

.icon-svg {
  width: 1em;
  height: 1em;
  display: inline-block;
  vertical-align: middle;
}

@media (max-width: 1024px) {
  .modules-grid { grid-template-columns: repeat(3, 1fr); }
  .paths-grid { grid-template-columns: 1fr; }
  .progress-modules { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 16px; }
  .hero-stats { gap: 24px; }
  .modules-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 24px; }
  .navbar-menu { display: none; }
  .progress-overall { flex-direction: column; }
  .progress-stats { grid-template-columns: 1fr; }
  .progress-modules { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  .modules-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 28px; }
  .hero-search-btn { display: none; }
  .hero-search .hero-search-input { padding-left: 48px !important; padding-right: 24px !important; }
}

/* 首页搜索联想面板。
   统一改为向下弹出：固定在搜索框正下方，不被导航遮挡，位置稳定不跳动。
   宽度跟着输入框走，max-height + 内部滚动，不无限拉长。 */
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  width: auto;
  max-width: 560px;
  margin: 0 auto;
  max-height: min(280px, 45vh);
  overflow-y: auto;
  overscroll-behavior: contain;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  z-index: 1001;
  display: none;
  opacity: 0;
  transition: opacity 0.24s ease-out;
}

@media (max-width: 480px) {
  .search-results {
    max-height: min(240px, 38vh);
  }
}

.search-results.visible {
  display: block;
  opacity: 1;
}

.search-result-item {
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background 0.24s ease-out;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: var(--color-surface-hover);
}

.search-result-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.search-result-desc {
  font-size: 15px;
  color: var(--color-text-muted);
}

.search-result-icon {
  display: inline-block;
  margin-right: 8px;
  width: 20px;
  text-align: center;
}

.navbar-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .navbar-mobile-toggle { display: flex; }
}

/* ===== 模块页面通用样式 ===== */
.page-header {
  padding: 104px 0 48px;
  text-align: center;
}
.page-header-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.page-header-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}
.page-content {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* ===== 面包屑导航 ===== */
.breadcrumb-inner {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  margin-bottom: 12px;
}
.breadcrumb-home {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.24s ease-out;
}
.breadcrumb-home:hover {
  color: var(--color-primary);
}
.breadcrumb-sep {
  color: var(--color-text-muted);
}
.breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}
.breadcrumb-standalone {
  padding-top: 72px;
  padding-bottom: 4px;
  background: var(--color-bg);
}
.breadcrumb-standalone .breadcrumb-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 术语词典 ===== */
.glossary-search {
  position: relative;
  max-width: 520px;
  margin: 0 auto 32px;
}
.glossary-search input {
  width: 100%;
  height: 48px;
  padding: 0 16px 0 44px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 15px;
}
.glossary-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}
.glossary-categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}
.glossary-cat-btn {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.24s ease-out;
  cursor: pointer;
}
.glossary-cat-btn:hover, .glossary-cat-btn.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.glossary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.term-card {
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all 0.24s ease-out;
}
.term-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.term-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.term-name {
  font-size: 18px;
  font-weight: 700;
}
.term-badges {
  display: flex;
  gap: 6px;
}
.difficulty-badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.difficulty-badge.basic { background: #dcfce7; color: #16a34a; }
.difficulty-badge.intermediate { background: #fef9c3; color: #ca8a04; }
.difficulty-badge.advanced { background: #fee2e2; color: #dc2626; }
[data-theme="dark"] .difficulty-badge.basic { background: rgba(22, 163, 74, 0.2); }
[data-theme="dark"] .difficulty-badge.intermediate { background: rgba(202, 138, 4, 0.2); }
[data-theme="dark"] .difficulty-badge.advanced { background: rgba(220, 38, 38, 0.2); }
.term-category-badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
}
.term-simple {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 10px;
}
.term-analogy {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  border-left: 3px solid var(--color-primary);
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}
.term-example {
  font-size: 14px;
  color: var(--color-text-muted);
}
.term-example strong {
  color: var(--color-primary);
}

/* ===== 模型图鉴 ===== */
.models-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}
.model-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all 0.24s ease-out;
  margin-bottom: 20px;
}
.model-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.model-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}
.model-name {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 4px;
}
.model-meta {
  font-size: 15px;
  color: var(--color-text-muted);
}
.model-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.model-tag {
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}
.model-tag.free { background: #dcfce7; color: #16a34a; }
.model-tag.paid { background: #fee2e2; color: #dc2626; }
.model-tag.freemium { background: #fdecee; color: #b03a44; }
.model-tag.open { background: #f3e8ff; color: #7c22ce; }
.model-tag.closed { background: #f1f5f9; color: #64748b; }
.model-tag.multimodal { background: #fef3c7; color: #b45309; }
[data-theme="dark"] .model-tag.free { background: rgba(22, 163, 74, 0.15); }
[data-theme="dark"] .model-tag.paid { background: rgba(220, 38, 38, 0.15); }
[data-theme="dark"] .model-tag.freemium { background: rgba(176, 42, 53, 0.15); }
[data-theme="dark"] .model-tag.open { background: rgba(124, 34, 206, 0.15); }
[data-theme="dark"] .model-tag.closed { background: rgba(100, 116, 139, 0.15); }
[data-theme="dark"] .model-tag.multimodal { background: rgba(180, 83, 9, 0.15); }
.model-section {
  margin-bottom: 16px;
}
.model-section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}
.model-section-content {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
}
.model-section-content ul {
  list-style: disc;
  padding-left: 20px;
  margin-top: 4px;
}
.model-section-content ul li {
  margin-bottom: 4px;
  font-size: 14px;
  color: var(--color-text);
}
.model-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}
.model-link-btn {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #C41E3A, #8B0000);
  color: var(--color-on-primary);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.24s ease-out;
}
.model-link-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 30, 58, 0.4);
}
.model-link-btn.secondary {
  background: var(--color-surface-hover);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.model-link-btn.secondary:hover {
  background: var(--color-border);
}

/* ===== 提示词教程 ===== */
.prompt-section {
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}
.prompt-section:last-child {
  border-bottom: none;
}
.prompt-section-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}
.prompt-section-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}
.prompt-box {
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-prompt-bg);
  color: var(--color-prompt-text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  position: relative;
  margin-bottom: 16px;
  overflow-x: auto;
}
.prompt-box.good {
  border-left: 4px solid #10b981;
}
.prompt-box.bad {
  border-left: 4px solid #ef4444;
}
.prompt-box .label {
  position: absolute;
  top: 8px;
  right: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.prompt-box.good .label { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.prompt-box.bad .label { background: rgba(239, 68, 68, 0.2); color: #fca5a5; }
.prompt-box pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 64px;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--color-copy-btn-bg);
  color: var(--color-copy-btn-text);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.24s ease-out;
  border: none;
}
.copy-btn:hover {
  background: var(--color-copy-btn-hover-bg);
}
.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.compare-label {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.compare-label.good { color: #10b981; }
.compare-label.bad { color: #ef4444; }
.formula-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  text-align: center;
  margin-bottom: 24px;
}
.formula-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.formula-content {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
}
.tip-box {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: #fef3c7;
  border-left: 3px solid #f59e0b;
  margin-bottom: 16px;
}
.tip-box-title {
  font-size: 13px;
  font-weight: 700;
  color: #b45309;
  margin-bottom: 4px;
}
.tip-box-text {
  font-size: 14px;
  color: #92400e;
  line-height: 1.5;
}
[data-theme="dark"] .tip-box { background: rgba(245, 158, 11, 0.1); }
[data-theme="dark"] .tip-box-title { color: #fbbf24; }
[data-theme="dark"] .tip-box-text { color: #fde68a; }

/* ===== 操作教程 ===== */
.tutorial-step {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all 0.24s ease-out;
}
.tutorial-step:hover {
  border-color: var(--color-primary);
}
.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #C41E3A, #8B0000);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}
.step-body {
  flex: 1;
}
.step-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}
.step-screenshot-placeholder {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  border: 2px dashed var(--color-border);
}
[data-theme="dark"] .step-screenshot-placeholder {
  background: linear-gradient(135deg, #1e2638, #141a2e);
}
.tutorial-complete-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #C41E3A, #8B0000);
  color: var(--color-on-primary);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.24s ease-out;
  cursor: pointer;
  border: none;
}
.tutorial-complete-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 30, 58, 0.4);
}
.tutorial-complete-btn.completed {
  background: #10b981;
}
.tutorial-progress-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--color-border);
  margin-bottom: 32px;
  overflow: hidden;
}
.tutorial-progress-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, #C41E3A, #E03A52);
  transition: width 0.24s ease-out;
}

/* ===== 代码块通用 ===== */
.code-block {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--color-code-bg);
  color: var(--color-code-text);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  margin-bottom: 16px;
}
.code-block .comment { color: #94a3b8; }
.code-block .keyword { color: #f472b6; }
.code-block .string { color: #a3e635; }

/* ===== Dark mode text color overrides (补全暗色模式文字色) ===== */
[data-theme="dark"] .path-icon.emerald { color: #6ee7b7; }
[data-theme="dark"] .path-icon.sky { color: #F2AAB5; }
[data-theme="dark"] .path-icon.violet { color: #c4b5fd; }
[data-theme="dark"] .module-card.indigo .module-icon { color: #E03A52; }
[data-theme="dark"] .module-card.amber .module-icon { color: #fcd34d; }
[data-theme="dark"] .module-card.violet .module-icon { color: #c4b5fd; }
[data-theme="dark"] .module-card.emerald .module-icon { color: #6ee7b7; }
[data-theme="dark"] .module-card.rose .module-icon { color: #fca5a5; }
[data-theme="dark"] .module-card.sky .module-icon { color: #7dd3fc; }
[data-theme="dark"] .module-card.orange .module-icon { color: #fdba74; }
[data-theme="dark"] .module-card.teal .module-icon { color: #5eead4; }
[data-theme="dark"] .module-card.cyan .module-icon { color: #67e8f9; }
[data-theme="dark"] .module-card.red .module-icon { color: #fca5a5; }
[data-theme="dark"] .module-card.lime .module-icon { color: #bef264; }
[data-theme="dark"] .module-card.yellow .module-icon { color: #fde047; }
[data-theme="dark"] .module-card.fuchsia .module-icon { color: #e879f9; }
[data-theme="dark"] .module-card.slate .module-icon { color: #94a3b8; }
[data-theme="dark"] .module-priority.P0 { color: #fca5a5; }
[data-theme="dark"] .module-priority.P1 { color: #fcd34d; }
[data-theme="dark"] .module-priority.P2 { color: #86efac; }
[data-theme="dark"] .difficulty-badge.basic { color: #6ee7b7; }
[data-theme="dark"] .difficulty-badge.intermediate { color: #fcd34d; }
[data-theme="dark"] .difficulty-badge.advanced { color: #fca5a5; }
[data-theme="dark"] .model-tag.free { color: #6ee7b7; }
[data-theme="dark"] .model-tag.paid { color: #fca5a5; }
[data-theme="dark"] .model-tag.freemium { color: #F2AAB5; }
[data-theme="dark"] .model-tag.open { color: #c4b5fd; }
[data-theme="dark"] .model-tag.closed { color: #94a3b8; }
[data-theme="dark"] .model-tag.multimodal { color: #fcd34d; }
[data-theme="dark"] .compare-label.good { color: #6ee7b7; }
[data-theme="dark"] .compare-label.bad { color: #fca5a5; }

/* ===== Global dark-mode overrides for inline styles & page-specific badges ===== */
[data-theme="dark"] [style*="background:#fef2f2"] { background: rgba(239, 68, 68, 0.15) !important; }
[data-theme="dark"] [style*="background:#dcfce7"] { background: rgba(16, 185, 129, 0.15) !important; }
[data-theme="dark"] [style*="background:#fef3c7"] { background: rgba(245, 158, 11, 0.15) !important; }
[data-theme="dark"] [style*="background:#ecfdf5"] { background: rgba(16, 185, 129, 0.15) !important; }
[data-theme="dark"] [style*="color:#dc2626"], [data-theme="dark"] [style*="color: #dc2626"] { color: #fca5a5 !important; }
[data-theme="dark"] [style*="color:#7f1d1d"], [data-theme="dark"] [style*="color: #7f1d1d"] { color: #fca5a5 !important; }
[data-theme="dark"] [style*="color:#16a34a"], [data-theme="dark"] [style*="color: #16a34a"] { color: #6ee7b7 !important; }
[data-theme="dark"] [style*="color:#b45309"], [data-theme="dark"] [style*="color: #b45309"] { color: #fcd34d !important; }
[data-theme="dark"] [style*="color:#92400e"], [data-theme="dark"] [style*="color: #92400e"] { color: #fde68a !important; }
[data-theme="dark"] [style*="color:#064e3b"], [data-theme="dark"] [style*="color: #064e3b"] { color: #6ee7b7 !important; }
[data-theme="dark"] [style*="color:#10b981"], [data-theme="dark"] [style*="color: #10b981"] { color: #6ee7b7 !important; }
[data-theme="dark"] [style*="color:#f59e0b"], [data-theme="dark"] [style*="color: #f59e0b"] { color: #fcd34d !important; }
[data-theme="dark"] [style*="color:#ef4444"], [data-theme="dark"] [style*="color: #ef4444"] { color: #fca5a5 !important; }
[data-theme="dark"] [style*="color:#6366f1"], [data-theme="dark"] [style*="color: #6366f1"] { color: #E03A52 !important; }
[data-theme="dark"] [style*="color:#d946ef"], [data-theme="dark"] [style*="color: #d946ef"] { color: #e879f9 !important; }
[data-theme="dark"] [style*="color:#2563eb"], [data-theme="dark"] [style*="color: #2563eb"] { color: #F2AAB5 !important; }
[data-theme="dark"] [style*="background:#10b981"], [data-theme="dark"] [style*="background: #10b981"] { background: rgba(16, 185, 129, 0.25) !important; }
[data-theme="dark"] [style*="background:#eef2ff"], [data-theme="dark"] [style*="background: #eef2ff"] { background: rgba(196, 30, 58, 0.15) !important; }
[data-theme="dark"] [style*="background:#fdf4ff"], [data-theme="dark"] [style*="background: #fdf4ff"] { background: rgba(217, 70, 239, 0.15) !important; }
[data-theme="dark"] [style*="background:#dbeafe"], [data-theme="dark"] [style*="background: #dbeafe"] { background: rgba(196, 30, 58, 0.10) !important; }
[data-theme="dark"] [style*="border-left:4px solid #ef4444"],
[data-theme="dark"] [style*="border:1px solid #ef4444"] { border-color: #fca5a5 !important; }
[data-theme="dark"] [style*="border-left:4px solid #f59e0b"] { border-color: #fcd34d !important; }
[data-theme="dark"] [style*="border-left:4px solid #6366f1"] { border-color: #E03A52 !important; }
[data-theme="dark"] [style*="border-left:4px solid #10b981"] { border-color: #6ee7b7 !important; }
[data-theme="dark"] [style*="border-left:4px solid #dc2626"] { border-color: #fca5a5 !important; }
/* Page-specific badge dark-mode text overrides */
[data-theme="dark"] .level-badge.beginner,
[data-theme="dark"] .pricing-tag.free,
[data-theme="dark"] .quiz-card-score,
[data-theme="dark"] .case-tag.level-beginner,
[data-theme="dark"] .progress-item-status.completed { color: #6ee7b7 !important; }
[data-theme="dark"] .level-badge.advanced,
[data-theme="dark"] .pricing-tag.paid,
[data-theme="dark"] .wrong-review-title,
[data-theme="dark"] .progress-item-status.in-progress { color: #fcd34d !important; }
[data-theme="dark"] .pricing-tag.freemium,
[data-theme="dark"] .tool-cat.note,
[data-theme="dark"] .case-tag.level-advanced { color: #F2AAB5 !important; }
[data-theme="dark"] .pricing-tag.open { color: #c4b5fd !important; }
[data-theme="dark"] .pricing-tag.closed,
[data-theme="dark"] .pricing-tag.multimodal,
[data-theme="dark"] .tool-cat.image { color: #fcd34d !important; }
[data-theme="dark"] .context-long { color: #6ee7b7 !important; }
[data-theme="dark"] .context-mid { color: #fcd34d !important; }
[data-theme="dark"] .context-short { color: #fca5a5 !important; }
[data-theme="dark"] .term-action-btn.read-btn.read,
[data-theme="dark"] .template-action-btn.faved,
[data-theme="dark"] .fav-btn.faved { color: #fcd34d !important; border-color: #fcd34d !important; }
[data-theme="dark"] .ref-label.good { color: #6ee7b7 !important; }
[data-theme="dark"] .ref-label.bad { color: #fca5a5 !important; }

/* ===== 通用工具 ===== */
.hidden { display: none !important; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.text-center { text-align: center; }
/* 这里原来有一条全局的 `.tip-card { pointer-events: none; }`——那是为了遮搜索下拉与小知识重叠而贴的膏药，
   副作用是本页任何时刻 tip-card 里的「☆ 收藏」都点不动。现在下拉改成向上展开，不再压着 tip-card，
   透传只需要在弹层打开期间生效，已由 style.css 里的 `.tip-card.search-dropdown-open` 负责，故删掉这条全局规则。 */

/* ============================================================
   全站文字安全防护层（2026-09-08）
   目标：杜绝任何容器边界/导航栏/弹窗边框对文字的遮挡裁切
   原则：只加安全内边距、换行规则、min-width，不改布局配色
   ============================================================ */

/* 1. 全局长文本自动换行：英文长词/URL/代码不撑破容器 */
p, li, td, th, dd, dt, span, div,
.card-desc, .module-desc, .entry-desc,
.tool-desc, .case-desc, .wiki-desc,
.tip-text, .hero-subtitle, .page-header-desc {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 2. 卡片/容器统一安全内边距，文字不贴边被裁切 */
.quick-card, .wiki-card, .pick-card, .latest-card,
.module-card, .path-card, .tool-card, .case-card,
.gallery-card, .entry-card, .tip-card, .stat-card,
.info-card, .feature-card, .achievement-card {
  padding-left: 20px;
  padding-right: 20px;
  min-width: 0;
}

/* 3. 模块页侧栏(rail)：文字不被右边界裁切 */
.mm-rail, .tt-rail, .cs-rail, .gk-rail, .ad-rail,
.mm-fgroup, .tt-rail-block, .cs-rail-block, .gk-rail-block, .ad-rail-block {
  padding-right: 12px;
  min-width: 0;
}

/* 4. 定义列表/键值对：长值不溢出 */
.mm-kv-item, .tt-kv-item, .cs-kv-item, .gk-kv-item, .ad-kv-item,
.mm-kv-item dt, .mm-kv-item dd,
.tt-kv-item dt, .tt-kv-item dd,
.gk-kv-item dt, .gk-kv-item dd {
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 5. 表格：单元格文字不被挤压裁切 */
table, .table, .data-table {
  table-layout: auto;
}
table td, table th, .table td, .table th {
  padding: 10px 12px;
  vertical-align: top;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 6. 弹窗/下拉面板：内边距安全，文字不贴边框 */
.search-results, .search-history-dropdown,
.achievement-modal, .achievement-popup,
.my-modal, .my-panel, .dev-panel {
  padding-left: 16px;
  padding-right: 16px;
}
.search-result-item, .search-history-item {
  padding-left: 14px;
  padding-right: 14px;
}

/* 7. 标签/徽章：长标签自动换行，不被截断 */
.tag, .badge, .label, .chip, .pill,
.rarity-tag, .category-tag, .status-tag,
.pr-level-tag, .pr-badge {
  max-width: 100%;
  overflow-wrap: break-word;
}

/* 8. 按钮：文字不被压缩，最小安全内边距 */
.btn, .button, button,
.search-btn, .hero-search-btn,
.theme-toggle, .nav-toggle {
  min-width: 0;
  overflow: visible;
}

/* 9. 页脚：文字安全间距 */
.footer, .footer-links, .footer-disclaimer,
.footer-contact, .footer-copyright, .footer-info {
  padding-left: 16px;
  padding-right: 16px;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 10. 锚点跳转顶部偏移补偿：内容标题不被固定导航栏盖住 */
[id] {
  scroll-margin-top: 80px;
}
h1[id], h2[id], h3[id], .section-title[id], .block-sub-title[id] {
  scroll-margin-top: 90px;
}

/* 11. 图谱/历史浏览等特殊列表：行文字不被裁切 */
.gv-nb, .gv-d-row, .gv-row,
.ad-row, .tt-row, .cs-row, .gk-row, .mm-row,
.hv-list, .hv-sec-list, .gg-klist,
.gv-list, .hl-list {
  min-width: 0;
}
.gv-row-name, .gv-row-meta, .gv-row-txt,
.hv-pal-row-name, .hv-pal-row-meta,
.ad-pal-row-def, .cs-pal-row-def, .tt-pal-row-def, .gk-pal-row-def {
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 12. 代码块：横向滚动而不是裁切文字 */
pre, code, .code-block {
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* 13. 学习中心模块卡片：文字安全 */
.lq-card, .lq-path-card, .lq-module-card,
.lq-resume, .lq-stat, .lq-quiz-card {
  padding-left: 16px;
  padding-right: 16px;
  min-width: 0;
}

/* 14. 创意工坊：文字安全 */
.gg-card, .gg-stage, .gg-dialog,
.cl-card, .cl-col, .cl-stats {
  padding-left: 16px;
  padding-right: 16px;
  min-width: 0;
}

/* 15. 实践页路径卡片：文字安全 */
.pr-card, .pr-level, .pr-path-card,
.pr-step, .pr-resource {
  padding-left: 16px;
  padding-right: 16px;
  min-width: 0;
}

/* ===== 2026-09 UI 修复：页面过渡防闪白 + 渲染优化 ===== */
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
@keyframes pageFadeIn { from { opacity: 0; } to { opacity: 1; } }
body { animation: pageFadeIn 0.25s ease; }
.navbar-link { padding: 6px 9px; font-size: 13px; }
@media (max-width: 1100px) {
  .navbar-link { padding: 6px 7px; font-size: 12.5px; }
}
/* ===== 移动端导航适配（2026-09 UI 修复）===== */
@media (max-width: 768px) {
  .navbar .container { justify-content: flex-start; }
  .navbar-logo {
    position: static !important;
    transform: none !important;
    margin-right: auto;
  }
  .theme-toggle {
    /* 移动端由 nav-component.js 控制定位，不强制 !important 避免冲突 */
  }
  .navbar-menu {
    /* 抽屉模式下由 nav-component.js 接管定位，这里不干预 */
  }
}


/* =============================================================================
   阶段6 · 全站细节统一打磨（2026-09-28）
   -----------------------------------------------------------------------------
   目标：组件规范统一（圆角/字重/内边距/hover）、间距规整、小屏PC适配、
        深浅色同步辅助、降级兜底。不改动任何布局与业务逻辑。
   ============================================================================= */

/* —— 全局交互过渡兜底：任何组件缺失 transition 时统一 240ms ease-out —— */
button, a, input, select, textarea, .gk-term, .card, .wiki-card, .entry-card,
.toc-toggle, .toc-term, .toc-drawer, .toc-drawer-mask, .side-toc, .btn,
.gk-tag, .pill, .tag-chip, .nav-item, .nav-link {
  transition-duration: 0.24s;
  transition-timing-function: ease-out;
}

/* —— 按钮：统一圆角 10px、字重 500、内边距 —— */
button, .btn, [class*="btn"] {
  border-radius: var(--radius-xl, 8px);
  font-weight: 500;
  letter-spacing: 0.01em;
}
button:active, .btn:active, [class*="btn"]:active {
  transform: scale(0.98);
}

/* —— 输入框：统一圆角 10px、发丝边框、聚焦柔和红 —— */
input[type="text"], input[type="search"], input[type="email"], input[type="password"],
select, textarea, .search-input, .search-box input {
  border-radius: var(--radius-xl, 8px);
  transition: border-color 0.24s ease-out, box-shadow 0.24s ease-out, background-color 0.24s ease-out;
}
input:focus, select:focus, textarea:focus, .search-input:focus, .search-box input:focus {
  border-color: var(--color-primary, #8B1A2B);
  box-shadow: 0 0 0 3px var(--color-primary-bg, rgba(139,26,43,0.08));
  outline: none;
}

/* —— 词条/知识卡片：统一 16px 圆角、柔和冷影、hover 上移 2px 提亮 —— */
.gk-term, .card, .wiki-card, .entry-card, .pick-card, .model-card, .term-card,
[class*="card"] {
  border-radius: 16px;
  transition: transform 0.24s ease-out, box-shadow 0.24s ease-out,
              border-color 0.24s ease-out, background-color 0.24s ease-out;
}
.gk-term:hover, .card:hover, .wiki-card:hover, .entry-card:hover,
.model-card:hover, [class*="card"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--shadow-soft, rgba(0,0,0,0.10));
}

/* —— 目录条目（PC侧栏/移动端抽屉共用）：字重、行高、hover 统一 —— */
.toc-toggle, .toc-term {
  font-weight: 400;
  line-height: 1.5;
}
.toc-cat > .toc-toggle { font-weight: 500; }

/* —— 间距规整：侧栏、抽屉、导航内部 —— */
.side-toc { padding: 0; }
.toc-tree { padding: 16px 8px 24px; }
.toc-drawer-inner { padding: 70px 0 24px; }
.navbar .container { gap: 4px; }

/* —— 主题切换平滑辅助（组件级，避免 html 级闪烁）—— */
html[data-theme] body,
html[data-theme] .side-toc,
html[data-theme] .toc-drawer,
html[data-theme] .gk-term,
html[data-theme] .card,
html[data-theme] .navbar {
  transition: background-color 0.24s ease-out, border-color 0.24s ease-out,
              color 0.24s ease-out;
}

/* —— 小屏 PC（769-1024px）：侧栏收窄避免挤压 —— */
@media (min-width: 769px) and (max-width: 1024px) {
  .side-toc { width: 200px; }
  body.side-toc-on { padding-left: 200px; }
  .toc-tree { padding: 14px 6px 20px; }
  .toc-term { padding-left: 26px; font-size: 12px; }
}

/* —— 系统减少动画：全站关闭动画与过渡 —— */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* —— 横向溢出兜底（双端）—— */
html, body { overflow-x: hidden; }

/* —— 深浅色无滞留辅助：显式定义常见组件浅色值 —— */
[data-theme="light"] .gk-term,
[data-theme="light"] .card,
[data-theme="light"] .wiki-card { background: var(--color-surface, #FFFFFF); }

/* —— 盒模型统一 —— */
*, *::before, *::after { box-sizing: border-box; }

/* ===== 修复：桌面端个人中心与主题切换按钮重叠（2026-09-28）
   navUserContainer 定位基准为 .container（右 padding 24px），themeToggle 基准为 #navbarMenu，
   两基准右缘差导致 right:58px 时个人中心按钮侵入主题按钮左侧（829px 实测重叠 12px）。
   桌面端统一加大 right 值错开；≤768px 抽屉模式两按钮均为 static，不受影响。 */
@media (min-width: 769px) {
  #navUserContainer { right: 86px !important; }
}
/* ===== 阶段7：侧边栏面板补全与背景（2026-09-28）=====
   仅作用于 #sideToc（PC 左侧目录栏）与 #tocDrawer（移动抽屉），主页面/导航/搜索区零影响。
   深色：深黑+石墨黑+冷灰黑，低对比暗红微光+极弱红线+细腻颗粒+玻璃层次；
   浅色：银白+浅灰+米白，低对比浅红灰渐变+云雾玻璃。 */

/* —— PC 侧边栏背景（深浅两套，非纯色） —— */
#sideToc.side-toc {
  background-color: rgba(13, 15, 22, 0.92) !important;
  background-image:
    radial-gradient(ellipse at 18% 0%, rgba(139, 26, 43, 0.10), transparent 42%),
    radial-gradient(ellipse at 85% 92%, rgba(30, 41, 59, 0.45), transparent 55%),
    radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(15, 18, 32, 0.96), rgba(10, 12, 18, 0.94));
  background-size: 100% 100%, 100% 100%, 7px 7px, 100% 100%;
  background-repeat: no-repeat;
}
[data-theme="light"] #sideToc.side-toc {
  background-color: rgba(255, 255, 255, 0.88) !important;
  background-image:
    radial-gradient(ellipse at 18% 0%, rgba(191, 59, 68, 0.055), transparent 42%),
    radial-gradient(ellipse at 85% 92%, rgba(226, 232, 240, 0.60), transparent 55%),
    radial-gradient(rgba(15, 23, 42, 0.028) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(243, 245, 249, 0.94));
  background-size: 100% 100%, 100% 100%, 7px 7px, 100% 100%;
  background-repeat: no-repeat;
}
/* 顶部极弱高光细线（玻璃面板感） */
#sideToc.side-toc::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.10), transparent);
  pointer-events: none;
}

/* —— 三段内容：辅助目录 / 站点信息 / 状态条 —— */
.toc-extra { margin-top: 10px; padding: 0 14px 16px; }
.toc-extra .toc-block + .toc-block { margin-top: 14px; }
.toc-block { padding: 12px 2px 4px; border-top: 1px solid rgba(148, 163, 184, 0.14); }
[data-theme="light"] .toc-block { border-top-color: rgba(15, 23, 42, 0.08); }
.toc-block-title {
  font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
  color: var(--color-text-muted); margin: 0 0 6px; opacity: 0.88;
}
.toc-quick-link {
  display: flex; align-items: center; padding: 7px 8px; margin: 2px 0;
  border-radius: 8px; font-size: 13.5px; color: var(--color-text);
  text-decoration: none;
  transition: background-color 0.24s ease-out, color 0.24s ease-out;
}
.toc-quick-link::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%; margin-right: 9px; flex: none;
  background: rgba(139, 26, 43, 0.55);
}
.toc-quick-link:hover { background: rgba(139, 26, 43, 0.08); color: var(--color-primary); }
[data-theme="light"] .toc-quick-link::before { background: rgba(191, 59, 68, 0.50); }
[data-theme="light"] .toc-quick-link:hover { background: rgba(191, 59, 68, 0.07); }
.toc-info-row {
  display: flex; justify-content: space-between; gap: 8px;
  font-size: 12.5px; line-height: 1.5; padding: 3px 0;
  color: var(--color-text-secondary);
}
.toc-info-row span:first-child { color: var(--color-text-muted); }
.toc-info-summary { flex-wrap: wrap; }
/* 底部状态条：贴侧边栏可视底部 */
.toc-status {
  position: sticky; bottom: 0; z-index: 5;
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
  margin: 12px 0 0; padding: 10px 12px;
  border-radius: 10px; font-size: 12px; color: var(--color-text-secondary);
  background: rgba(15, 18, 32, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.14);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
[data-theme="light"] .toc-status { background: rgba(255, 255, 255, 0.88); border-color: rgba(15, 23, 42, 0.08); }
.toc-status-dot { width: 7px; height: 7px; border-radius: 50%; background: #34D399; box-shadow: 0 0 6px rgba(52, 211, 153, 0.55); flex: none; }
.toc-status-sync { margin-left: auto; opacity: 0.75; font-size: 11px; }

/* —— 移动端：抽屉套用同款背景（仅移动存在，全部收在媒体查询内） —— */
@media (max-width: 768px) {
  #tocDrawer {
    background-color: rgba(13, 15, 22, 0.94) !important;
    background-image:
      radial-gradient(ellipse at 18% 0%, rgba(139, 26, 43, 0.10), transparent 42%),
      radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
      linear-gradient(180deg, rgba(15, 18, 32, 0.97), rgba(10, 12, 18, 0.95));
    background-size: 100% 100%, 7px 7px, 100% 100%;
    background-repeat: no-repeat;
  }
  [data-theme="light"] #tocDrawer {
    background-color: rgba(255, 255, 255, 0.94) !important;
    background-image:
      radial-gradient(ellipse at 18% 0%, rgba(191, 59, 68, 0.055), transparent 42%),
      radial-gradient(rgba(15, 23, 42, 0.028) 1px, transparent 1px),
      linear-gradient(180deg, rgba(255,255,255,0.95), rgba(243, 245, 249, 0.96));
    background-size: 100% 100%, 7px 7px, 100% 100%;
    background-repeat: no-repeat;
  }
  #tocDrawer::after {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.10), transparent);
    pointer-events: none;
  }
  .toc-drawer-inner .toc-extra { padding-bottom: 24px; }
}
/* ===== 阶段7：左上角 logo 浅色模式可见性修复（2026-09-28）=====
   根因：brand-logo-transparent.png 为白色 Y（透明底），浅色导航下白底白图标不可见。
   修复：浅色模式将 logo 滤镜改为 brightness(0)（白转深石墨黑），浅底清晰可见；
   深色模式保持原白色化滤镜（brightness(0) invert(1)）不变。全站 46 页 style.css 均引入。 */
[data-theme="light"] .navbar-logo-img,
[data-theme="light"] img.navbar-logo-img,
[data-theme="light"] a.navbar-logo img,
[data-theme="light"] img[src*="brand-logo-transparent"] {
  filter: brightness(0) !important;
}
/* ===== 阶段7：左上角 logo 与返回按钮错位修复（2026-09-28）=====
   根因：PC 下 logo 绝对定位 left:20，返回按钮在流内居中组（窄屏向左挤、与 logo 重叠）；
   移动端 ☰/返回/logo 顺序挤在左侧。
   修复：PC 返回按钮绝对定位到 logo 右侧（64px），并以等宽 margin 补偿流内位置，右侧元素位置不变；
   移动端 flex order 重排为 ☰ → logo → 返回，用户/汉堡仍右对齐。 */
@media (min-width: 769px) {
  .global-back-btn {
    position: absolute !important;
    left: 64px !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    margin: 0 !important;
    z-index: 2;
  }
  /* 补偿：返回按钮脱离文档流后，用等宽 margin 保持用户入口与菜单原居中位置 */
  .nav-user-container {
    margin-left: 70px !important;
  }
}
@media (max-width: 768px) {
  .toc-hamburger { order: -3 !important; }
  .navbar-logo {
    order: -2 !important;
    margin-right: 10px !important;
  }
  .global-back-btn {
    order: -1 !important;
    margin-right: 0 !important;
  }
  .nav-user-container { order: 1 !important; margin-left: auto !important; }
  .navbar-hamburger { order: 2 !important; }
}
/* ===== 阶段7：侧边栏通顶 + logo 置侧边栏左上角（2026-09-28）=====
   根因：#sideToc top:64px 从导航栏下方开始，顶部区域无侧边栏背景，色块割裂。
   修复：PC 侧边栏容器延伸至页面顶端（top:0），目录内容从导航栏下方 64px 开始；
   logo 固定于侧边栏最左上角（20px/12px），返回按钮保持 16px 间距、顶部对齐。
   右侧菜单/个人中心/深浅切换位置不动；移动端布局（抽屉/☰→logo→返回）不受影响。 */
@media (min-width: 769px) {
  #sideToc {
    top: 0 !important;
    padding-top: 64px !important;
  }
  .navbar-logo {
    top: 12px !important;
    transform: none !important;
  }
  .global-back-btn {
    left: 68px !important;
    top: 12px !important;
    transform: none !important;
  }
}
/* ===== 阶段7：深浅主题切换性能优化（2026-09-28）=====
   根因：切换时全屏 overlay+粒子动画（0.45s）叠加全站 0.24s background/color 过渡，大面积重绘卡顿；
   快速连点无防抖导致样式错乱。
   修复：切换瞬间 html.theme-switching 禁用全站过渡/动画（一次性渲染）；
   常驻容器 will-change 合成优化；旧 overlay 隐藏兜底（函数体保留兼容）。 */
html.theme-switching,
html.theme-switching * {
  transition: none !important;
  animation: none !important;
}
#sideToc,
.navbar,
.brand-strip {
  will-change: background-color, background-image;
}
.theme-transition-overlay { display: none !important; }

/* ===== 阶段7：移动端顶部导航均衡分布修复（2026-09-28）
   修复手机端导航元素压缩挤向左侧：容器 flex space-between 均匀分布，
   左右预留安全边距，项目不挤压、文字不截断。仅移动端生效，PC 不变。 */
@media (max-width: 768px) {
  .navbar .container {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 100% !important;
    padding-left: 12px !important;
    padding-right: 12px !important;
    gap: 8px !important;
  }
  .navbar-logo {
    flex: 0 0 auto !important;
  }
  .navbar-logo img.navbar-logo-img,
  .navbar-logo .logo-icon {
    max-width: 44px !important;
    max-height: 44px !important;
  }
  .toc-hamburger,
  .navbar-hamburger,
  .global-back-btn,
  .nav-user-container {
    flex: 0 0 auto !important;
  }
  .nav-user-container {
    margin-left: 0 !important;
    min-width: 0 !important;
    white-space: nowrap !important;
  }
}
/* 阶段7：全站滚动条占位统一，避免导航位置随有无滚动条偏移 */
html { overflow-y: scroll; }

/* 内联样式页脚（ai-applications / model-catalog / model-comparison-full / skill-library，无 .footer 类）：主题自适应背景 */
body > footer:not(.footer) {
  background: var(--color-surface-2);
}
/* ===== 隐藏页面主滚动条视觉（保留滚动功能，侧边栏等内部滚动容器滚动条保留） ===== */
html::-webkit-scrollbar,
body::-webkit-scrollbar {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
}
html {
  scrollbar-width: none !important;
}

/* ===== 阶段2：首页探索板块（最新词条 / 热门推荐 / 提示词推荐） ===== */
.explore-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
}
.explore-tab {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 240ms ease-out;
}
.explore-tab:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.explore-tab.active {
  background: rgba(191, 59, 68, 0.1);
  border-color: rgba(191, 59, 68, 0.45);
  color: var(--color-primary);
}
.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.explore-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: all 240ms ease-out;
}
.explore-card:hover {
  transform: translateY(-2px);
  background: var(--color-surface-2);
  border-color: rgba(191, 59, 68, 0.5);
}
.explore-tag {
  align-self: flex-start;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(191, 59, 68, 0.08);
  color: var(--color-primary);
}
.explore-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
  overflow-wrap: break-word;
}
.explore-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
  overflow-wrap: break-word;
}
.explore-go { font-size: 13px; color: var(--color-primary); }
.explore-empty { color: var(--color-text-muted); font-size: 14px; }

/* ===== 阶段2：首页 AI拾光板块（今日小知识 + 今日翻到的） ===== */
.glow-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
  align-items: start;
}
.glow-tip .tip-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-sizing: border-box;
}
.glow-roam .roam-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.glow-roam .roam-shuffle {
  margin: 0;
  flex-shrink: 0;
}
.glow-roam .roam-cards {
  margin-top: 12px;
}

/* 移动端：探索 / AI拾光 / 资源分类横滑 */
@media (max-width: 768px) {
  .explore-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }
  .explore-tab { flex-shrink: 0; }
  .explore-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .glow-grid {
    grid-template-columns: 1fr;
  }
  /* 资源分类：横向滑动卡片 */
  .resource-grid {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 14px;
    padding-bottom: 8px;
  }
  .resource-grid .resource-card {
    flex: 0 0 72% !important;
    scroll-snap-align: start;
  }
}

/* ===== 阶段3：虚室生白 · 每日名片（侧边栏底部，PC+移动抽屉共用） ===== */
.toc-quote {
  margin: 16px 0 0;
  padding: 0 14px;
}
.toc-quote-card {
  border-radius: 16px;
  border: 1px solid var(--color-border);
  padding: 14px 16px;
  background: linear-gradient(135deg, #171a24 0%, #20222f 50%, #2b2129 100%);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.16);
  transition: all 240ms ease-out;
}
[data-theme="light"] .toc-quote-card {
  background: linear-gradient(135deg, #f4f5f7 0%, #e9ebee 52%, #f1e7e9 100%);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}
.toc-quote-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--color-text);
  margin: 0 0 8px;
}
.toc-quote-text {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin: 0 0 8px;
  overflow-wrap: break-word;
}
.toc-quote-sign {
  font-size: 11px;
  color: var(--color-text-muted);
  text-align: right;
}
/* 移动端抽屉：保持内边距一致，不挤压 */
@media (max-width: 768px) {
  .toc-quote {
    padding: 0 12px;
    margin-top: 14px;
  }
}

/* ===== 阶段4：首页+侧边栏布局专项修复（2026-09-29） ===== */
/* 问题1：侧边栏整体上移，虚室生白名片完整可见（无需滚动侧边栏） */
#sideToc.side-toc { padding-top: 44px !important; }
.toc-tree { padding: 4px 8px 10px !important; }
.toc-cat > .toc-toggle { padding-top: 5px !important; padding-bottom: 5px !important; }
.toc-term { padding-top: 5px !important; padding-bottom: 5px !important; }
.toc-extra { margin-top: 2px !important; padding: 0 14px 6px !important; }
.toc-block { padding: 8px 2px 2px !important; }
.toc-extra .toc-block + .toc-block { margin-top: 6px !important; }
.toc-block-title { margin: 0 0 2px !important; }
.toc-quick-link { padding: 5px 8px !important; margin: 1px 0 !important; }
.toc-info-row { padding: 2px 0 !important; }
.toc-status { margin: 6px 0 0 !important; padding: 8px 12px !important; }
.toc-quote { margin: 8px 0 0 !important; padding: 0 14px !important; }
.toc-quote-card { padding: 12px 16px !important; }
.toc-quote-title { margin: 0 0 4px !important; }
.toc-quote-text { margin: 0 0 6px !important; line-height: 1.7 !important; }
.toc-quote-sign { margin-top: 0 !important; }

/* 移动端抽屉：同步压缩，虚室生白完整可见 */
@media (max-width: 768px) {
  .toc-drawer-inner { padding: 44px 0 10px !important; }
  .toc-tree { padding: 4px 8px 10px !important; }
  .toc-quote { padding: 0 12px !important; }
  .toc-quote-card { padding: 11px 14px !important; }
  .toc-extra { padding: 0 12px 6px !important; }
  .toc-status { padding: 8px 10px !important; }
}

/* 问题2：AI拾光布局收紧（左右均衡、缩小空白、按钮不占整块） */
.glow-grid { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 12px !important; align-items: stretch !important; }
#tipCard { height: 100% !important; display: flex !important; flex-direction: column !important; justify-content: center !important; box-sizing: border-box !important; }
#tipCard .tip-icon { margin-bottom: 6px !important; }
#tipCard .tip-content { margin-bottom: 6px !important; }
#tipCard .tip-text { line-height: 1.7 !important; margin: 0 0 6px !important; }
#tipCard .tip-fav-btn { padding: 4px 10px !important; font-size: 12px !important; }
.glow-roam .roam-header { margin-bottom: 10px !important; }
.glow-roam .roam-cards { margin-top: 0 !important; }
.glow-roam .roam-card { padding: 11px 16px !important; margin-bottom: 8px !important; }
.glow-roam .roam-card-tag { margin-bottom: 3px !important; }
.glow-roam .roam-card-text { margin: 0 !important; line-height: 1.6 !important; }
.glow-roam .roam-shuffle { padding: 5px 12px !important; font-size: 12px !important; }

@media (max-width: 768px) {
  .glow-grid { gap: 12px !important; grid-template-columns: 1fr !important; }
  #tipCard { padding: 16px 18px !important; height: auto !important; }
  .glow-roam .roam-card { padding: 10px 14px !important; margin-bottom: 6px !important; }
}


/* ===== 阶段4b：AI拾光板块专项布局修复（2026-09-29） =====
   高优先级选择器（section.home-glow 前缀 + !important），确保覆盖旧样式 */
section.home-glow .glow-grid {
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr) !important;
  gap: 12px !important;
  align-items: stretch !important;
  display: grid !important;
}
/* 左栏：AI每日知识卡 */
section.home-glow .glow-tip {
  padding: 16px 18px !important;
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: 16px !important;
  box-sizing: border-box !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  height: 100% !important;
}
section.home-glow #tipCard .tip-icon { margin: 0 0 6px !important; }
section.home-glow #tipCard .tip-label { font-size: 12px !important; margin: 0 0 4px !important; }
section.home-glow #tipCard .tip-text { line-height: 1.65 !important; margin: 0 0 8px !important; font-size: 14px !important; }
section.home-glow #tipCard .tip-tag { margin: 0 0 8px !important; }
section.home-glow #tipCard .tip-fav-btn { padding: 4px 12px !important; font-size: 12px !important; }
/* 右栏：今日翻到的 + 嵌入卡片下方的按钮 */
section.home-glow .glow-roam {
  padding: 16px 18px !important;
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: 16px !important;
  box-sizing: border-box !important;
  display: flex !important;
  flex-direction: column !important;
  height: 100% !important;
}
section.home-glow .roam-header { margin: 0 0 10px !important; padding: 0 !important; }
section.home-glow .roam-title { font-size: 14px !important; font-weight: 600 !important; margin: 0 !important; }
section.home-glow .roam-cards { margin: 0 !important; display: flex !important; flex-direction: column !important; gap: 8px !important; }
section.home-glow .roam-card {
  padding: 9px 14px !important;
  margin: 0 !important;
  border-radius: 12px !important;
  border: 1px solid var(--color-border) !important;
  background: var(--color-surface-2) !important;
  transition: all 240ms ease-out !important;
}
section.home-glow .roam-card:hover { transform: translateY(-2px) !important; border-color: rgba(191, 59, 68, 0.45) !important; }
section.home-glow .roam-card-tag { margin: 0 0 2px !important; font-size: 11px !important; }
section.home-glow .roam-card-text { margin: 0 !important; line-height: 1.55 !important; font-size: 13px !important; }
/* 再来一张：小号胶囊按钮，嵌入卡片区下方，不再单独占大区域 */
section.home-glow .roam-shuffle {
  align-self: flex-start !important;
  margin: 10px 0 0 !important;
  padding: 4px 12px !important;
  font-size: 12px !important;
  border-radius: 999px !important;
  border: 1px solid rgba(191, 59, 68, 0.4) !important;
  background: transparent !important;
  color: var(--color-primary) !important;
  cursor: pointer !important;
  transition: all 240ms ease-out !important;
  width: auto !important;
  display: inline-flex !important;
  align-items: center !important;
}
section.home-glow .roam-shuffle:hover { background: rgba(191, 59, 68, 0.08) !important; border-color: rgba(191, 59, 68, 0.6) !important; }

/* 移动端：自动上下堆叠 */
@media (max-width: 768px) {
  section.home-glow .glow-grid { grid-template-columns: 1fr !important; gap: 10px !important; }
  section.home-glow .glow-tip { padding: 14px 16px !important; }
  section.home-glow .glow-roam { padding: 14px 16px !important; }
  section.home-glow .roam-card { padding: 8px 12px !important; }
}


/* ===== 全站导航栏固定置顶（2026-09-29）=====
   统一 position:fixed，覆盖 theme-enhance.css 等文件的 relative 规则 */
.navbar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  height: var(--nav-height, 48px) !important;
  z-index: 1000 !important;
}
/* 主体内容顶部补偿：高度等于导航栏高度（--nav-height: 48px） */
body {
  padding-top: var(--nav-height, 48px) !important;
}
/* 左侧目录与固定导航栏协调：从导航下沿开始，不重叠 */
#sideToc.side-toc {
  top: var(--nav-height, 48px) !important;
}


/* ===== 首页布局重构方案B（2026-09-29）=====
   资源分类下方：PC 左右双栏（AI拾光 | 探索），移动端上下堆叠 */
.home-split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 14px;
  align-items: start;
}
.home-split > section { padding-top: 0 !important; padding-bottom: 0 !important; }
.home-split .section-header { margin-bottom: 12px !important; }
.home-split .section-title { font-size: 20px !important; }
.home-split .section-subtitle { margin-top: 4px !important; font-size: 13px !important; }

/* 左栏 AI拾光：内部 tip/roam 上下堆叠，紧凑无空白 */
.home-split .home-glow .glow-grid { grid-template-columns: 1fr !important; gap: 10px !important; }
.home-split .glow-tip { padding: 14px 16px !important; }
.home-split .glow-roam { padding: 14px 16px !important; }

/* 右栏探索：紧凑 */
.home-split .explore-tabs { margin-bottom: 10px !important; }
.home-split .explore-grid { gap: 10px !important; }

@media (max-width: 768px) {
  .home-split { grid-template-columns: 1fr; gap: 12px; }
}


/* ===== 首页 AI拾光+探索 名片式外框（2026-09-29）===== */
.home-split {
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 32px -16px rgba(0, 0, 0, 0.18);
  align-items: stretch !important;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  background-color: var(--color-surface);
}
[data-theme="dark"] .home-split {
  background-color: #1b1e26;
  background-image:
    linear-gradient(135deg, rgba(90, 100, 140, 0.16), rgba(40, 45, 60, 0) 45%),
    linear-gradient(315deg, rgba(120, 110, 160, 0.12), rgba(30, 34, 44, 0) 50%),
    linear-gradient(180deg, rgba(26, 29, 38, 0.92), rgba(18, 20, 28, 0.96));
}
[data-theme="light"] .home-split {
  background-color: #f7f7f9;
  background-image:
    linear-gradient(135deg, rgba(210, 215, 228, 0.5), rgba(240, 240, 245, 0) 50%),
    linear-gradient(315deg, rgba(230, 228, 220, 0.45), rgba(245, 245, 248, 0) 50%),
    linear-gradient(180deg, rgba(250, 250, 252, 0.95), rgba(242, 242, 246, 0.96));
}
/* 模块独立背景层次：同色系、轻微明度差 */
.home-split .home-glow,
.home-split .home-explore {
  border-radius: 12px;
  margin-top: 0 !important;
  padding: 14px 16px !important;
}
.home-split .home-glow .container,
.home-split .home-explore .container {
  padding-left: 0 !important;
  padding-right: 0 !important;
  max-width: none !important;
}
[data-theme="dark"] .home-split .home-glow { background: rgba(30, 34, 44, 0.85); }
[data-theme="dark"] .home-split .home-explore { background: rgba(38, 42, 54, 0.85); }
[data-theme="light"] .home-split .home-glow { background: rgba(255, 255, 255, 0.82); }
[data-theme="light"] .home-split .home-explore { background: rgba(244, 246, 250, 0.88); }

/* 移动端：名片框纵向连续卡片，不做双栏 */
@media (max-width: 768px) {
  .home-split { padding: 12px; }
}


/* ===== 阶段4b：AI拾光底部空白修复（2026-09-29）方案① =====
   外层名片框保留 align-items:stretch 等高；AI拾光内部 flex 垂直流，
   【再来一张】按钮 margin-top:auto 推至容器底部，消除下方留白 */
section.home-glow {
  display: flex !important;
  flex-direction: column !important;
}
section.home-glow > .container {
  display: flex !important;
  flex-direction: column !important;
  flex: 1 !important;
  min-height: 0 !important;
}
section.home-glow .glow-grid {
  flex: 1 !important;
  align-content: stretch !important;
}
section.home-glow .glow-roam {
  justify-content: flex-start !important;
}
section.home-glow .roam-shuffle {
  margin-top: auto !important;
  align-self: flex-start !important;
}

/* 移动端：恢复自然流，按钮紧跟内容，不做底部推挤 */
@media (max-width: 768px) {
  section.home-glow {
    display: block !important;
  }
  section.home-glow > .container {
    flex: none !important;
  }
  section.home-glow .glow-grid {
    flex: none !important;
  }
  section.home-glow .roam-shuffle {
    margin-top: 10px !important;
  }
}

/* ============================================================
   全站移动端上下间距收紧（≤768px，PC 完全不受影响）
   仅收紧垂直方向外边距与网格纵向 gap，减少模块间空白；
   不修改颜色、圆角、阴影、文字字号；卡片左右 padding 维持既有规则；
   与学习中心侧边锚点跳转逻辑（JS 动态计算位置）无冲突。
   ============================================================ */
@media (max-width: 768px) {
  /* 12.1 内容板块容器：下方间距收紧（上方间距由既有移动端规则接管） */
  .section,
  .resource-section {
    margin-bottom: 16px !important;
  }
  .resource-section-subtitle {
    margin-bottom: 12px !important;
  }

  /* 12.2 通用小卡片之间：垂直外边距收紧 */
  .wiki-card, .quick-card, .pick-card, .latest-card, .explore-card,
  .model-card, .tool-card, .case-card, .entry-card, .gallery-card,
  .tip-card, .ad-card, .tt-card, .cs-card, .gk-card, .mm-card,
  .hv-card, .gg-card, .cl-card, .pw-card, .lq-card,
  .stat-card, .info-card, .feature-card, .module-card {
    margin-top: 6px !important;
    margin-bottom: 10px !important;
  }

  /* 12.3 卡片网格：纵向/横向 gap 同步收紧 */
  .resource-grid, .explore-grid, .wiki-grid, .quick-grid, .pick-grid,
  .latest-grid, .tool-grid, .case-grid, .entry-grid, .gallery-grid,
  .module-grid, .stat-grid, .info-grid {
    row-gap: 10px !important;
    column-gap: 10px !important;
  }

  /* 12.4 词条条目 / 阅读条目：垂直间距收紧 */
  .gk-term,
  .reading-card,
  .gk-group {
    margin-top: 6px !important;
    margin-bottom: 8px !important;
  }

  /* 12.5 学习中心板块容器 */
  .lq-fun,
  .reading-section,
  .lq-rail-block {
    margin-top: 10px !important;
    margin-bottom: 12px !important;
  }

  /* 12.6 板块标题：与下方内容间距收紧（.section-title 由既有移动端规则接管） */
  .resource-section-title,
  .block-title,
  .module-title,
  .reading-h2 {
    margin-bottom: 6px !important;
  }
}