/* ==========================================
   全站基础样式（浅色简洁风 · 悬浮岛式侧边栏）
   - 全部颜色走 CSS 变量，暗色主题一键切换
   - 兼容：不支持 backdrop-filter / 变量的老浏览器
     仅损失毛玻璃与主题色，布局不受影响
   ========================================== */

/* ---------- 浅色主题变量（默认） ---------- */
:root {
  /* 颜色 */
  --bg-page: #f6f6f4;
  --bg-glass: rgba(255, 255, 255, 0.78);
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-modal: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.08);    /* 玻璃弹窗底：近纯透明 */
  --glass-border: rgba(255, 255, 255, 0.6); /* 玻璃亮边 */
  --glass-input: rgba(255, 255, 255, 0.66); /* 玻璃输入框 */
  --glass-hover: rgba(255, 255, 255, 0.55); /* 玻璃悬停底 */
  --glass-menu: rgba(255, 255, 255, 0.74);  /* 浮层菜单实底（下拉/详情面板） */
  --bg-code: #fafaf9;                    /* 代码块底 */
  --bg-bubble: #ececeb;                  /* 用户消息气泡 */
  --bg-hover-tint: rgba(0, 0, 0, 0.045); /* 通用悬停底色 */
  --bg-hover-strong: rgba(0, 0, 0, 0.08);

  --text-main: #1f1e1b;
  --text-sub: #6f6d66;
  --text-faint: #a6a49c;
  --text-placeholder: #b3b0a6;

  --border: rgba(0, 0, 0, 0.07);
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --grad-accent: #2563eb; /* 主按钮渐变 */
  --ring: rgba(37, 99, 235, 0.4);        /* 键盘焦点柔光 */

  --overlay: rgba(20, 20, 20, 0.3);      /* 弹窗遮罩 */

  /* 阴影 */
  --shadow-island: 0 12px 40px rgba(20, 20, 20, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  --shadow-card: 0 1px 3px rgba(20, 20, 20, 0.05);
  --shadow-card-hover: 0 10px 30px rgba(20, 20, 20, 0.1);
  --shadow-glow: rgba(37, 99, 235, 0.3); /* 主按钮光晕（品牌渐变件用） */
  --inline-code-tint: rgba(0, 0, 0, 0.055);

  /* v87 新配色规则：浅色 = 黑按钮 + 彩色指示 */
  --btn-grad: #0d0d0d; /* 浅色主按钮：黑 */
  --btn-glow: rgba(13, 13, 13, 0.18);                    /* 黑按钮光晕 */
  --card-glass: rgba(255, 255, 255, 0.78);               /* 玻璃卡片底（浅色同侧栏） */

  /* 布局（v88 圆角体系：弹窗/大卡 16 · 卡片 14 · 按钮/小组件 12） */
  --radius-lg: 16px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --nav-height: 56px;

  --topbar-bg: rgba(246, 246, 244, 0);
  --topbar-line: rgba(0, 0, 0, 0.06);}

/* ---------- 暗色主题变量（手动切换，中性炭灰，不偏蓝） ---------- */
:root[data-theme="dark"] {
  --bg-page: #0c0d10;
  --bg-glass: rgba(36, 39, 48, 0.58);    /* 玻璃通用层：通透卡片感 */
  --side-glass: rgba(21, 23, 28, 0.94);  /* 侧栏悬浮岛：暗色实底 */
  --bg-card: #1c1c1f;
  --bg-input: #1c1c1f;
  --bg-modal: #202024;
  --glass-bg: rgba(255, 255, 255, 0.04);    /* 玻璃弹窗底：近纯透明 */
  --glass-border: rgba(255, 255, 255, 0.14); /* 玻璃亮边 */
  --glass-input: rgba(0, 0, 0, 0.25);        /* 玻璃输入框 */
  --glass-hover: rgba(255, 255, 255, 0.09);  /* 玻璃悬停底 */
  --glass-menu: rgba(26, 26, 30, 0.78);      /* 浮层菜单实底（下拉/详情面板） */
  --bg-code: #17171a;
  --bg-bubble: #26262a;
  --bg-hover-tint: rgba(255, 255, 255, 0.06);
  --bg-hover-strong: rgba(255, 255, 255, 0.11);

  --text-main: #e8e8e6;
  --text-sub: #9b9b97;
  --text-faint: #6b6b68;
  --text-placeholder: #5a5a58;

  --border: rgba(255, 255, 255, 0.08);
  --accent: #4d8df2;
  --accent-soft: rgba(77, 141, 242, 0.14);
  --grad-accent: #4d8df2;
  --ring: rgba(90, 140, 240, 0.4);

  --overlay: rgba(0, 0, 0, 0.55);

  --shadow-island: 0 12px 40px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  --shadow-card: inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: rgba(70, 120, 230, 0.35);
  --inline-code-tint: rgba(255, 255, 255, 0.07);

  /* v87 新配色规则：暗色 = 蓝按钮（深蓝）+ 黑白指示 */
  --btn-grad: #3a67e8;
  --btn-glow: rgba(58, 103, 232, 0.3);
  --card-glass: rgba(36, 39, 48, 0.58);

  --topbar-bg: rgba(12, 13, 16, 0);
  --topbar-line: rgba(255, 255, 255, 0.06);}

/* ---------- 暗色主题（无 JS 时跟随系统，兼容后备） ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg-page: #0c0d10;
    --bg-glass: rgba(36, 39, 48, 0.58);
    --side-glass: rgba(21, 23, 28, 0.94);
    --bg-card: #1c1c1f;
    --bg-input: #1c1c1f;
    --bg-modal: #202024;
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.14);
    --glass-input: rgba(0, 0, 0, 0.25);
    --glass-hover: rgba(255, 255, 255, 0.09);
    --glass-menu: rgba(26, 26, 30, 0.78);
    --bg-code: #17171a;
    --bg-bubble: #26262a;
    --bg-hover-tint: rgba(255, 255, 255, 0.06);
    --bg-hover-strong: rgba(255, 255, 255, 0.11);

    --text-main: #e8e8e6;
    --text-sub: #9b9b97;
    --text-faint: #6b6b68;
    --text-placeholder: #5a5a58;

    --border: rgba(255, 255, 255, 0.08);
    --accent: #4d8df2;
    --accent-soft: rgba(77, 141, 242, 0.14);
    --grad-accent: #4d8df2;
    --ring: rgba(90, 140, 240, 0.4);

    --overlay: rgba(0, 0, 0, 0.55);
    --shadow-island: 0 12px 40px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    --shadow-card: inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow: rgba(70, 120, 230, 0.35);
    --inline-code-tint: rgba(255, 255, 255, 0.07);

    /* v87 新配色规则：暗色 = 蓝按钮 + 黑白指示 */
    --btn-grad: #3a67e8;
    --btn-glow: rgba(58, 103, 232, 0.3);
    --card-glass: rgba(36, 39, 48, 0.58);
  }
}

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

/* 按钮无底：去掉 UA 默认底色/边框（深色模式下白底方块的根源） */
button {
  background: none;
  border: none;
  font-family: inherit;
  color: inherit;
}

/* 主题切换时整体平滑过渡 */
html,
body {
  transition: background-color 0.3s ease, color 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
}

/* v87：背景光晕（多层柔和 radial，缓慢漂移；浅色刚刚好，暗色极淡） */
::selection {
  background: var(--accent-soft);
}

/* 键盘焦点柔光（替代浏览器默认边框）
   鼠标点击不显示，避免出现"细线" */
button,
a,
input,
textarea {
  outline: none;
}

button:focus-visible:not(:active),
a:focus-visible:not(:active) {
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
}

/* 背景纯色 */

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================
   顶栏（v88 Excel 式：折叠钮 + logo | 居中搜索 | 主题 + 头像）
   sticky 于内容区顶部，透明穿透，滚动时内容从下方经过
   ========================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  transition: background-color 0.3s ease;
}
[data-theme="dark"] .topbar {
  background: transparent;
}

.topbar-in {
  max-width: 100%;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.logo {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.4px;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  text-decoration: none;
}

.logo i {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: #0d0d0d;
  flex: none;
  display: block;
}

[data-theme="dark"] .logo i {
  background: #f2f3f5;
}

.logo span {
  transition: opacity 0.18s ease;
}

.col-btn {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: none;
  border: none;
  color: var(--text-sub);
  transition: background-color 0.18s ease, color 0.18s ease;
  flex: none;
}

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

.col-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.search {
  flex: none;
  width: min(520px, 42vw);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 10px;
  padding: 0 14px;
  height: 34px;
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  box-shadow: 0 2px 12px rgba(15, 30, 60, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.65);
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.search:focus-within {
  background: rgba(255, 255, 255, 0.74);
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .search {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .search:focus-within {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.search svg {
  width: 15px;
  height: 15px;
  stroke: var(--text-sub);
  fill: none;
  stroke-width: 2;
  flex: none;
}

.search input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-main);
}

.search input::placeholder {
  color: var(--text-placeholder);
}

.topbar-r {
  display: flex;
  align-items: center;
  gap: 14px;
}

.topbar .theme-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.tb-avatar {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background-color: #0d0d0d;
  color: #fff;
  font-size: 13px;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background-color 0.18s ease;
  background-size: cover;
  background-position: center;
  text-decoration: none;
}

.tb-avatar:hover {
  background-color: #333333;
}

[data-theme="dark"] .tb-avatar {
  background-color: #ececec;
  color: #0d0d0d;
}

[data-theme="dark"] .tb-avatar:hover {
  background-color: #d8d8d8;
}

/* ==========================================
   悬浮岛式侧边栏
   ========================================== */
/* v87/v88：全高悬浮岛（顶栏下方开始，左右留缝，内容区自动让位） */
.sidebar {
  position: fixed;
  left: 16px;
  top: calc(var(--nav-height) + 16px);
  transition: background-color 0.3s ease;
  bottom: 16px;
  width: 224px;
  z-index: 100;

  display: flex;
  flex-direction: column;
  gap: 14px;

  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  backdrop-filter: blur(20px) saturate(1.5);
  /* 无边框：去掉"新对话"与聊天区之间的细线，靠阴影体现悬浮感 */
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-island);
  padding: 22px 14px 16px;
  overflow-x: hidden;
  transition: width 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), padding 0.22s cubic-bezier(0.2, 0.8, 0.2, 1),
    background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* v88 折叠态：224→64，文字滑出，只留图标；内容区不动（仅桌面生效，移动端底栏不受影响） */
@media (min-width: 781px) {
  .sidebar.collapsed {
    width: 64px;
    padding-left: 10px;
    padding-right: 10px;
  }
  .sidebar.collapsed .side-user {
    justify-content: center;
    padding: 12px 2px 2px;
  }
  .sidebar.collapsed .side-nick {
    display: none;
  }
  .sidebar.collapsed .sidebar-chat-wrap {
    display: none;
  }
  .sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 9px 0;
  }
  .sidebar.collapsed .nav-link span {
    opacity: 0;
    margin-left: -6px;
    pointer-events: none;
    width: 0;
    overflow: hidden;
    flex: none;
  }
  .sidebar.collapsed .nav-more {
    display: none;
  }
  .sidebar.collapsed .sidebar-quote {
    display: none;
  }
  .sidebar.collapsed .sidebar-bottom {
    align-items: center;
    padding-top: 10px;
  }
  .sidebar.collapsed .sidebar-foot {
    display: none;
  }
}

/* 暗色：侧栏实底（不透明的岛，层次更稳） */
[data-theme="dark"] .sidebar {
  background: var(--side-glass);
}

/* 站标 */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  padding: 4px 8px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: #ffffff;
  background: var(--grad-accent);
  border-radius: 10px;
  box-shadow: 0 4px 12px var(--shadow-glow);
}

.brand-mark svg {
  width: 18px;
  height: 18px;
}

.brand-text {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

/* 导航链接 */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 500;
  cursor: grab;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.3s ease;
}

.nav-link:active {
  cursor: grabbing;
}

.nav-link.is-dragging {
  opacity: 0.45;
}

.nav-link.is-dragging * {
  pointer-events: none;
}

.nav-link svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.nav-link:hover {
  background: var(--bg-hover-tint);
  color: var(--text-main);
}

.nav-link.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* ===== v93 美句：未打开 AI 聊天时在导航下方占位 ===== */
.sidebar-quote {
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.4px;
  color: var(--text-faint);
  padding: 0 12px;
  transition: color 0.3s ease;
}
body:not(.chat-active) .sidebar-quote {
  animation: fade-up 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.chat-active .sidebar-quote {
  display: none;
}

/* ===== v93 底部：文档 / 设置（文档在上、设置在下，分界线） ===== */
.sidebar-bottom {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  transition: border-color 0.3s ease;
}

/* 桌面：「更多」及移动面板隐藏（笔记/留言/统计已上提为主线） */
@media (min-width: 781px) {
  .sidebar-nav > .nav-more,
  .sidebar-nav > .sidebar-extra-wrap {
    display: none;
  }
}

/* 侧边栏底部 */
.sidebar-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 8px 0;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-faint);
  transition: border-color 0.3s ease;
}

.store-stats {
  max-width: 88px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: help;
}

/* v47：悬浮在（被截断的）字数显示上，弹出完整「会话 · 字数」小气泡 */
.store-wrap {
  position: relative;
  display: inline-flex;
}

.store-tip {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: #26262b;
  color: #f2f2f0;
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  padding: 5px 11px;
  border-radius: 9px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
  pointer-events: none;
  z-index: 60;
}

.store-tip::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-bottom-color: #26262b;
}

.store-wrap:hover .store-tip:not([hidden]) {
  display: block;
  animation: tip-in 0.14s ease both;
}

@keyframes tip-in {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-3px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* 会话统计仅在 AI 聊天界面显示 */
body:not(.chat-active) .store-stats {
  display: none;
}

/* ==========================================
   按钮体系
   ========================================== */

/* 主按钮：v87 配色规则——浅色黑底 / 暗色深蓝底 + 光晕 + 悬停提亮 + 按下收缩 */
.new-chat-btn,
.primary-btn {
  border: none;
  background: var(--btn-grad);
  color: #ffffff;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--btn-glow);
  transition: box-shadow 0.25s ease, filter 0.25s ease, transform 0.15s ease,
    background-color 0.3s ease;
}

.new-chat-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
}

.primary-btn {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.new-chat-btn svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.new-chat-btn:hover:not(:disabled) {
  filter: brightness(1.08);
  box-shadow: 0 6px 22px var(--btn-glow);
}

.new-chat-btn:hover svg {
  transform: rotate(90deg);
}

.new-chat-btn:active:not(:disabled),
.primary-btn:active:not(:disabled) {
  transform: scale(0.97);
}

/* 图标按钮：透明底 + 悬停圆底 + 图标旋转 + 按下收缩 */
.icon-btn,
.theme-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-sub);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.icon-btn:hover,
.theme-btn:hover {
  background: var(--bg-hover-tint);
  color: var(--text-main);
}

.icon-btn:active,
.theme-btn:active {
  transform: scale(0.88);
}

.icon-btn svg {
  width: 17px;
  height: 17px;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.icon-btn:hover svg {
  transform: rotate(25deg);
}

/* 主题切换按钮：日/月双图标叠加，旋转淡入切换 */
.theme-btn {
  position: relative;
}

.theme-btn svg {
  position: absolute;
  width: 17px;
  height: 17px;
  transition: opacity 0.3s ease, transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.theme-btn .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.4);
}

[data-theme="dark"] .theme-btn .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.4);
}

[data-theme="dark"] .theme-btn .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* ==========================================
   首页内容
   ========================================== */
.main-content {
  max-width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0 40px;
}

.hero {
  text-align: center;
  padding: clamp(84px, 11vw, 140px) 0 clamp(48px, 6vw, 72px);
}

.hero-title {
  font-size: clamp(38px, 5.6vw, 66px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-sub);
  max-width: 560px;
  margin: 0 auto;
}

/* 页脚 */
.site-footer {
  padding: 28px 0 56px;
  border-top: 1px solid var(--border);
  text-align: center;
  transition: border-color 0.3s ease;
}

.site-footer p {
  font-size: 12.5px;
  color: var(--text-faint);
}

/* v88 页脚（极轻，内容区底部） */
.foot {
  position: sticky;
  bottom: 0;
  z-index: 2;
  max-width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0 24px 40px;
  font-size: 12px;
  color: var(--text-faint);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* 提示浮层 */
.toast {
  position: fixed;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--text-main);
  color: #ffffff;
  font-size: 13.5px;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(15, 15, 15, 0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.3s ease;
  z-index: 300;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================
   移动端专用件（桌面一律隐藏；<780px 时由媒体查询显示）
   ========================================== */
.m-sess-sheet {
  display: none;
}
.nav-personal {
  display: none;
}

/* ==========================================
   响应式
   ========================================== */
@media (max-width: 1100px) {
  .sidebar {
    left: 20px;
    top: calc(var(--nav-height) + 20px);
    bottom: 20px;
    width: 200px;
  }

  /* v64：.app 基础定义在文件后部，需提高特异性才能覆盖 */
  body .app {
    left: 244px;
  }
}

@media (max-width: 780px) {
  /* ===== v85：移动端布局 —— 微信式通栏底部 Tab ===== */

  /* --- v88 顶栏：折叠钮隐藏，搜索占满 --- */
  .topbar-in {
    padding: 0 14px;
    gap: 10px;
  }
  .topbar .col-btn {
    display: none;
  }
  .topbar .search {
    max-width: none;
    margin: 0;
    width: auto;
    flex: 1;
  }

  /* --- 底部导航栏：fixed 贴底、全宽、实底、随主题、安全区适配 --- */
  .sidebar {
    position: fixed;
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    transform: none;
    width: 100%;
    height: calc(62px + env(safe-area-inset-bottom, 0px));
    flex-direction: row;
    align-items: stretch;
    gap: 0;
    padding: 0;
    border: none;
    border-top: 1px solid var(--border);
    border-radius: 0;
    box-shadow: none;
    background: var(--bg-card);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    transition: background-color 0.3s ease, border-color 0.3s ease;
    z-index: 140;
  }
  /* 移动端隐藏：!important 防 profile.css（后加载 .side-user flex）/ chat.css 覆盖 */
  body .sidebar-brand,
  body .side-user,
  body .sidebar-chat-wrap,
  body .sidebar-foot,
  body .sidebar-quote,
  body .sidebar-bottom {
    display: none !important;
  }
  /* v93：笔记/留言/统计已在移动端「更多」面板里，不再占底栏 Tab */
  body .sidebar-nav > .nav-link[data-view="notes"],
  body .sidebar-nav > .nav-link[data-view="messages"],
  body .sidebar-nav > .nav-link[data-view="stats"] {
    display: none !important;
  }
  .sidebar-nav {
    flex: 1;
    flex-direction: row;
    align-items: stretch;
    justify-content: space-between;
    gap: 0;
    padding: 0;
    min-width: 0;
  }
  .nav-link,
  .nav-link.nav-more {
    flex: 1;
    min-width: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 7px 2px;
    font-size: 11px;
    border-radius: 0;
    color: var(--text-sub);
  }
  .nav-link svg,
  .nav-link.nav-more svg {
    width: 22px;
    height: 22px;
  }
  /* 微信式高亮：纯主题色（无底色块），平滑过渡 */
  .nav-link.active,
  .nav-link.nav-more.open {
    background: none;
    color: var(--accent);
    font-weight: 600;
  }
  /* 移动端底部 Tab 显示「个人」 */
  .nav-personal {
    display: flex;
  }

  /* --- 更多抽屉：底部上滑面板（避让底栏 + 安全区） --- */
  .sidebar-extra-wrap {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(62px + env(safe-area-inset-bottom, 0px) + 12px);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding: 0 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.14);
    transition: max-height 0.32s ease, opacity 0.24s ease, padding 0.32s ease;
    z-index: 145;
  }
  .sidebar-extra-wrap.open {
    max-height: 340px;
    opacity: 1;
    padding: 8px;
  }
  .sidebar-extra-inner {
    margin: 0;
    padding: 0;
    border: none;
    flex-direction: column;
    gap: 4px;
  }
  .sidebar-extra-inner .extra-link {
    justify-content: flex-start;
    width: 100%;
    padding: 11px 14px;
    border-radius: 12px;
    font-size: 14px;
  }
  .extra-link svg {
    width: 19px;
    height: 19px;
  }

  /* --- 应用区：顶栏占位 + 底部为导航栏让位 --- */
  body .app {
    left: 0;
    right: 0;
    top: var(--nav-height);
    bottom: calc(62px + env(safe-area-inset-bottom, 0px));
    transition: background-color 0.3s ease;
  }
  body.chat-active .app {
    top: var(--nav-height);
    overflow: hidden;
  }
  .main-content {
    margin: 0;
    padding: 20px 14px 28px;
  }

  /* --- 首页 --- */
  .hero {
    padding: 30px 0 32px;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-badge {
    padding: 4px 10px;
    font-size: 11px;
  }
  .hero-subtitle {
    font-size: 14px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .btn-hero-primary,
  .btn-hero-ghost {
    width: 100%;
    justify-content: center;
  }
  .feature-cards {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .feature-card {
    padding: 16px 14px;
  }
  .feature-card h3 {
    font-size: 15px;
  }
  .feature-card p {
    font-size: 12px;
  }
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* --- toast 避让底栏 --- */
  .toast {
    bottom: calc(62px + env(safe-area-inset-bottom, 0px) + 14px);
  }

  /* --- 移动端会话抽屉 --- */
  .m-sess-sheet {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 160;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }
  .m-sess-sheet.open {
    opacity: 1;
    pointer-events: auto;
  }
  .m-sess-panel {
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: calc(62px + env(safe-area-inset-bottom, 0px) + 12px);
    max-height: 62vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
    transform: translateY(16px);
    transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
  }
  .m-sess-sheet.open .m-sess-panel {
    transform: none;
  }
  .m-sess-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
  }
  .m-sess-close {
    width: 30px;
    height: 30px;
    border: none;
    background: none;
    color: var(--text-sub);
    font-size: 14px;
  }
  .m-sess-list {
    overflow-y: auto;
    padding: 2px 8px 10px;
  }
  .m-sess-list .session-item {
    width: 100%;
    box-sizing: border-box;
  }
}

/* ==========================================
   应用区（单页视图切换）
   ========================================== */
.app {
  position: fixed;
  top: var(--nav-height);
  right: 24px;
  bottom: 0;
  left: 264px;
  overflow-y: auto;
  z-index: 1;
  /* v45：背景交给 body（透出装饰光晕） */
  transition: background-color 0.3s ease;
}

/* 聊天视图：.app 不滚动，由 .chat-view 内部滚动（输入框保持贴底不动） */
body.chat-active .app {
  overflow: hidden;
}

.view {
  display: none;
}

.view.active {
  display: block;
  animation: view-in 0.32s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.view.leaving {
  animation: view-out 0.16s ease both;
}

@keyframes view-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes view-out {
  to {
    opacity: 0;
    transform: translateY(-8px);
  }
}

/* ==========================================
   侧边栏聊天区：切换 AI 聊天时平滑展开
   （height 从 0 弹性过渡，为新按钮让出位置）
   ========================================== */
.sidebar-chat-wrap {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.45s cubic-bezier(0.2, 0.8, 0.2, 1),
    opacity 0.3s ease;
}

/* 非聊天视图：彻底隐藏，不占 flex gap（消除「个人」与导航之间的空隙） */
body:not(.chat-active) .sidebar-chat-wrap {
  display: none;
}

.sidebar-chat-inner {
  overflow: hidden;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-active .sidebar-chat-wrap {
  grid-template-rows: 1fr;
  opacity: 1;
}

/* 展开时内部元素依次浮现 */
.chat-active .sidebar-chat-inner > * {
  animation: fade-up 0.4s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.chat-active .sidebar-chat-inner > *:nth-child(1) { animation-delay: 0.08s; }
.chat-active .sidebar-chat-inner > *:nth-child(2) { animation-delay: 0.16s; }

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 细滚动条（全局，暗色/亮色通吃） ---------- */
*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background: rgba(128, 128, 138, 0.28);
  border-radius: 999px;
  border: 2.5px solid transparent;
  background-clip: padding-box;
  transition: background-color 0.2s ease;
}

*::-webkit-scrollbar-thumb:hover {
  background-color: rgba(128, 128, 138, 0.5);
  background-clip: padding-box;
}

*::-webkit-scrollbar-corner {
  background: transparent;
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(128, 128, 138, 0.35) transparent;
}

/* ========== 交互动效（v40）：按压反馈 ========== */
.nav-link:active,
.note-op:active,
.notes-tool:active,
.bb-tool:active,
.bb-plus:active,
.tool-btn:active,
.effort-btn:active,
.session-del:active,
.notes-menu-item:active,
.bb-plus-option:active,
.note-ref-item:active,
.note-item:active,
.note-search:active,
.note-title-input:active {
  filter: brightness(0.93);
}

/* 尊重系统「减弱动态效果」偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================
   统计视图（v44）：KPI / 趋势图 / 明细表
   ========================================== */
.stats-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 40px 0 22px;
  flex-wrap: wrap;
}

.stats-upd {
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- 上层：KPI ---------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kpi-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.kpi-label {
  font-size: 12.5px;
  color: var(--text-sub);
  letter-spacing: 1px;
}

.kpi-num {
  font-size: 30px;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
  line-height: 1.1;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- 中层：趋势图（v45 折线） ---------- */
.stats-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 18px 18px 14px;
  transition: box-shadow 0.3s ease;
}

.stats-panel:hover {
  box-shadow: var(--shadow-card-hover);
}

.trend-panel {
  margin-top: 18px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.panel-title {
  font-size: 14px;
  font-weight: 700;
}

.panel-legend {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-sub);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: none;
  background: transparent;
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-sub);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.legend-item:hover {
  background: var(--bg-hover-tint);
  color: var(--text-main);
}

.legend-item.off {
  opacity: 0.38;
  color: var(--text-faint);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.dot-note { background: var(--accent); }
.dot-chat { background: #9ca3af; }

.legend-item.off .legend-dot {
  background: transparent !important;
  border: 1.5px dashed currentColor;
}

.trend-chart {
  padding: 6px 0 0;
}

.trend-svg {
  width: 100%;
  height: auto;
  display: block;
}

.grid-line {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: 3 4;
  shape-rendering: crispEdges;
}

.grid-label {
  font-size: 10px;
  fill: var(--text-faint);
  text-anchor: end;
}

.x-label {
  font-size: 10px;
  fill: var(--text-faint);
}

.series-g .series-line {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.series-g[data-series="note"] .series-line {
  stroke: var(--accent);
}

.series-g[data-series="chat"] .series-line {
  stroke: #9ca3af;
}

.series-dot {
  stroke: var(--bg-card);
  stroke-width: 1.5;
}

.series-g[data-series="note"] .series-dot {
  fill: var(--accent);
}

.series-g[data-series="chat"] .series-dot {
  fill: #9ca3af;
}

.trend-empty {
  font-size: 13px;
  color: var(--text-faint);
  text-align: center;
  padding: 40px 0 20px;
}

/* ---------- 下层：明细表 ---------- */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
  margin-top: 18px;
  padding-bottom: 72px;
}

.panel-hint {
  font-size: 12px;
  color: var(--text-faint);
}

.detail-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.detail-table th {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-faint);
  letter-spacing: 1px;
  text-transform: uppercase;
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}

.detail-table th:nth-child(1) { width: 46%; }
.detail-table th:nth-child(2) { width: 14%; }
.detail-table th:nth-child(3) { width: 18%; }
.detail-table th:nth-child(4) { width: 22%; }

.detail-table td {
  font-size: 13px;
  padding: 9px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-table tbody tr:last-child td {
  border-bottom: none;
}

.detail-table .clickable-row {
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.detail-table .clickable-row:hover {
  background: var(--bg-hover-tint);
}

.detail-table .cell-title { font-weight: 600; }
.detail-table .cell-num, .detail-table .cell-pin {
  font-variant-numeric: tabular-nums;
  color: var(--text-sub);
}
.detail-table .cell-time, .detail-table .cell-last {
  color: var(--text-faint);
}
.detail-table .empty-row td {
  text-align: center;
  color: var(--text-faint);
  padding: 22px 8px;
  cursor: default;
}

/* 窄屏：KPI 两列 */
@media (max-width: 640px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 超大屏（≥1600px）：内容加宽，充分利用宽幅 */
@media (min-width: 1600px) {
  .main-content {
    max-width: min(1300px, 100%);
    padding: 0 56px;
  }

  .kpi-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

  .detail-grid {
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  }

  .trend-svg {
    max-width: 880px;
    margin: 0 auto;
  }
}

/* ==========================================
   留言板（v69）：公开留言，D1 存储
   ========================================== */
.messages-view .main-content {
  max-width: 760px;
  margin: 0 auto;
}

.msg-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-card);
}

/* v94：昵称/邮箱并排 */
.msg-form-row {
  display: flex;
  gap: 10px;
}

.msg-author {
  width: 100%;
  max-width: 260px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.msg-form-row .msg-author {
  max-width: none;
  flex: 1;
}

.msg-author:focus,
.msg-content:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--ring);
}

.msg-content {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  font-family: inherit;
}

.msg-send {
  align-self: flex-end;
}

.msg-empty {
  text-align: center;
  color: var(--text-faint);
  padding: 48px 0;
  font-size: 14px;
}

.msg-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-card);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}
.msg-item:hover {
  box-shadow: var(--shadow-card-hover);
}
/* v94：留言头像（identicon / 首字兜底） */
.msg-item-ava-row {
  flex: none;
}
.msg-item-ava {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  display: block;
}
.msg-item-ava.no-ava {
  background: var(--bg-hover-strong);
  color: var(--text-sub);
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 600;
}
.msg-item-mid {
  flex: 1;
  min-width: 0;
}
.msg-item-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}

.msg-item-author {
  font-weight: 600;
  font-size: 13px;
  color: var(--text-main);
}

.msg-item-time {
  font-size: 12px;
  color: var(--text-faint);
}

/* v85：留言删除按钮（管理员可见） */
.msg-item-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.msg-del {
  border: none;
  background: none;
  color: var(--text-faint);
  font-size: 12px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 6px;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.msg-del:hover {
  color: #dc4b4b;
  background: rgba(220, 75, 75, 0.08);
}

.msg-item-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ==========================================
   首页升级（v70）：hero 徽章/渐变标题/CTA + 功能入口卡片
   全部复用现有 CSS 变量，浅色/暗色主题自适应
   ========================================== */

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.4px;
  margin-bottom: 22px;
  box-shadow: 0 0 0 1px var(--glass-border), 0 6px 20px -6px var(--btn-glow);
}

.hero-badge svg {
  width: 13px;
  height: 13px;
}

/* v94：hero 背景光晕（径向渐变 + 缓慢漂移），随主题自适应 */
.hero {
  position: relative;
}

/* v94：标题渐变流动 */
.hero-title {
  background: none;
  
  
  color: transparent;
  
}
@keyframes hero-title-flow {
  from { background-position: 200% center; }
  to { background-position: -200% center; }
}
[data-theme="dark"] .hero-title {
  background: none;
  
  
}

/* v94：功能卡图标轻动效 */
.feature-card:hover .feature-icon {
  transform: translateY(-2px) rotate(-3deg) scale(1.06);
}
.feature-icon {
  transition: transform 0.24s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.btn-hero-primary,
.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn-hero-primary {
  background: var(--btn-grad);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--btn-glow);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 9px 26px var(--btn-glow);
}

.btn-hero-primary svg {
  width: 16px;
  height: 16px;
}

.btn-hero-ghost {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-main);
}

.btn-hero-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--ring);
  box-shadow: var(--shadow-card-hover);
}

/* ---------- 功能入口卡片 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 6px 0 12px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 22px;
  border-radius: var(--radius-lg);
  background: var(--card-glass);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  text-decoration: none;
  color: inherit;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--ring);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent);
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

/* v87 指示色规则：浅色 = 彩色（聊天蓝/笔记琥珀/留言绿/统计紫），暗色 = 黑白 */
.feature-grid .feature-card:nth-child(1) .feature-icon {
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
}
.feature-grid .feature-card:nth-child(2) .feature-icon {
  background: rgba(217, 119, 6, 0.12);
  color: #d97706;
}
.feature-grid .feature-card:nth-child(3) .feature-icon {
  background: rgba(5, 150, 105, 0.12);
  color: #059669;
}
.feature-grid .feature-card:nth-child(4) .feature-icon {
  background: rgba(124, 58, 237, 0.12);
  color: #7c3aed;
}
[data-theme="dark"] .feature-grid .feature-card .feature-icon {
  background: rgba(255, 255, 255, 0.08);
  color: #e8e8e6;
}

.feature-title {
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-sub);
}

/* 窄屏：hero 与卡片区间距收紧 */
@media (max-width: 640px) {
  .hero {
    padding: clamp(64px, 16vw, 96px) 0 clamp(36px, 5vw, 52px);
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .feature-card {
    padding: 18px 16px 16px;
  }
}

/* ===== v71 云端管理区（设置面板内） ===== */
.admin-box {
  margin-top: 6px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
}
.admin-section {
  margin-bottom: 14px;
}
.admin-head {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-sub);
  margin-bottom: 8px;
}
.admin-table-wrap {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  min-width: 640px;
}
.admin-table th {
  text-align: left;
  font-weight: 600;
  color: var(--text-sub);
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-hover-tint);
  white-space: nowrap;
}
.admin-table td {
  padding: 6px 10px;
  vertical-align: middle;
  border-bottom: 1px solid var(--border);
}
.admin-table tbody tr:last-child td {
  border-bottom: none;
}
.admin-table tbody tr:hover td {
  background: var(--bg-hover-tint);
}
.admin-table input {
  width: 100%;
  min-width: 90px;
  box-sizing: border-box;
  font-size: 12.5px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-input);
  color: inherit;
}
.admin-table input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--ring);
}
.admin-table select {
  width: 100%;
  min-width: 90px;
  box-sizing: border-box;
  font-size: 12.5px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-input);
  color: inherit;
}
.admin-table select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--ring);
}
.admin-del {
  border: none;
  background: transparent;
  color: #e05555;
  cursor: pointer;
  font-size: 13px;
  padding: 4px 8px;
  border-radius: 6px;
}
.admin-del:hover {
  background: rgba(224, 85, 85, 0.14);
}
.admin-add {
  margin-top: 10px;
}
.admin-tip {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--text-faint);
}
.admin-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}
.admin-hint {
  font-size: 12px;
  color: var(--text-sub);
}
.admin-hint.ok {
  color: #3cb371;
}

/* ===== v72 侧边栏设置入口 ===== */
.sidebar-set-wrap {
  margin-top: 8px;
  padding: 0 10px;
}

/* ===== v73 更多下拉（统计 / 文档，复刻聊天区展开动画） ===== */
.nav-more {
  background: none;
  border: none;
  font: inherit;
  width: 100%;
  cursor: pointer;
  text-align: left;
}
.nav-more svg {
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.nav-more.open svg {
  transform: rotate(180deg);
}
.nav-more.open {
  background: var(--bg-hover-tint);
  color: var(--text-main);
}
.sidebar-extra-wrap {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.4s cubic-bezier(0.2, 0.8, 0.2, 1),
    opacity 0.25s ease;
}
.sidebar-extra-wrap.open {
  grid-template-rows: 1fr;
  opacity: 1;
}
.sidebar-extra-inner {
  overflow: hidden;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-left: 10px;
  padding-left: 10px;
  border-left: 1px solid var(--border);
}
.sidebar-extra-inner .extra-link {
  padding: 7px 10px;
  font-size: 13.5px;
}
.sidebar-extra-inner > * {
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.sidebar-extra-wrap.open .sidebar-extra-inner > * {
  opacity: 1;
  transform: none;
}
.sidebar-extra-wrap.open .sidebar-extra-inner > *:nth-child(1) { transition-delay: 0.05s; }
.sidebar-extra-wrap.open .sidebar-extra-inner > *:nth-child(2) { transition-delay: 0.1s; }

/* ===== v72 文档视图 ===== */
.docs-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 60px;
  line-height: 1.7;
  font-size: 14.5px;
}
.docs-intro {
  color: var(--text-sub);
  margin: 4px 0 24px;
}
.docs-content h3 {
  font-size: 17px;
  margin: 28px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.docs-content p {
  margin: 8px 0;
}
.docs-content ol,
.docs-content ul {
  margin: 8px 0;
  padding-left: 24px;
}
.docs-content li {
  margin: 4px 0;
}
.docs-content code {
  font-family: Consolas, Menlo, monospace;
  font-size: 13px;
  background: var(--bg-code);
  padding: 1px 6px;
  border-radius: 5px;
}
.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  margin-top: 8px;
}
.docs-table th,
.docs-table td {
  text-align: left;
  padding: 7px 10px;
  border: 1px solid var(--border);
}
.docs-table th {
  background: var(--bg-card);
  font-weight: 600;
}

/* ===== v75 设置独立页面（#setting） ===== */
.settings-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.settings-page .stats-head {
  margin-bottom: 0;
}
.settings-savebar {
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
}

/* ===== v108 仪表盘：系统状态 ===== */
.sys-refresh {
  padding: 4px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  color: var(--text-sub);
  font-size: 12.5px;
  cursor: pointer;
  transition: all 0.2s;
}
.sys-refresh:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.sys-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 2px 0;
}
.sys-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 13.5px;
}
.sys-row:nth-child(odd) {
  background: var(--bg-soft, rgba(128, 128, 128, 0.05));
}
.sys-icon {
  width: 20px;
  text-align: center;
  opacity: 0.85;
  flex: none;
}
.sys-label {
  width: 92px;
  flex: none;
  color: var(--text-sub);
}
.sys-val {
  flex: 1;
  word-break: break-all;
}
.sys-ok { color: #2ecc71; }
.sys-err { color: #e74c3c; }
.sys-dim { color: var(--text-sub); opacity: 0.7; }
.sys-empty {
  padding: 14px 12px;
  color: var(--text-sub);
  font-size: 13.5px;
}

/* ===== v109 仪表盘：三卡片 + 网络折线图 ===== */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 12px;
}
.dash-card {
  background: var(--card);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line, rgba(128,128,128,0.18));
  border-radius: 14px;
  padding: 12px 14px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.dash-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-sub);
}
.dash-ic { font-size: 15px; }
.dash-title { font-weight: 600; }
.dash-dot {
  width: 8px; height: 8px; border-radius: 50%;
  flex: none;
}
.dot-ok { background: #2ecc71; }
.dot-err { background: #e74c3c; }
.dot-dim { background: var(--text-sub); opacity: 0.5; }
.dash-main {
  font-size: 14.5px;
  font-weight: 600;
  word-break: break-all;
}
.dash-sub {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-sub);
  word-break: break-all;
}
.chart-card {
  grid-column: 1 / -1;
  background: var(--card);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line, rgba(128,128,128,0.18));
  border-radius: 14px;
  padding: 12px 14px;
  margin: 0 12px 12px;
}
.chart-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 6px;
}
.chart {
  display: block;
  width: 100%;
  height: 92px;
}
.chart-empty {
  padding: 18px 6px;
  color: var(--text-sub);
  font-size: 13px;
  text-align: center;
}
@media (max-width: 900px) {
  .dash-grid { grid-template-columns: 1fr; }
}

.chart-legend {
  display: flex;
  gap: 14px;
  margin-top: 4px;
  font-size: 11.5px;
  color: var(--text-sub);
}
.lg-solid::before, .lg-dash::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 3px;
  margin-right: 5px;
  vertical-align: middle;
  border-radius: 2px;
}
.lg-solid::before { background: var(--accent, #5b8cff); }
.lg-dash::before {
  background: repeating-linear-gradient(90deg, var(--text-sub) 0 4px, transparent 4px 7px);
  opacity: 0.7;
}

/* ===== v111：寄存柜（免注册 · 取件码 · 多存储后端） ===== */
.locker-page { max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }
.locker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 860px) {
  .locker-grid { grid-template-columns: 1fr; }
}
.locker-card { padding: 20px; }
.locker-card-h { margin-bottom: 14px; }
.locker-card-h h3 { font-size: 17px; font-weight: 600; margin: 0 0 4px; color: var(--text-main); }
.locker-card-h p { margin: 0; font-size: 12.5px; color: var(--text-sub); }

/* 拖放区 */
.locker-drop {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm, 12px);
  padding: 22px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color .18s, background .18s;
  background: var(--bg-hover-tint, rgba(0, 0, 0, 0.045));
  margin-bottom: 14px;
}
.locker-drop:hover, .locker-drop.over { border-color: var(--accent); background: var(--accent-soft); }
.locker-empty { font-size: 13px; color: var(--text-faint); }
.locker-file { display: flex; align-items: center; gap: 10px; text-align: left; }
.locker-file-ic { font-size: 22px; line-height: 1; }
.locker-file strong { display: block; font-size: 14px; color: var(--text-main); word-break: break-all; }
.locker-file small { font-size: 12px; color: var(--text-sub); }

/* 表单行 */
.locker-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.locker-label { font-size: 12.5px; color: var(--text-sub); flex: 0 0 auto; min-width: 30px; }
.locker-bks { display: flex; gap: 8px; flex-wrap: wrap; }
.locker-bk {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm, 12px);
  background: var(--bg-input);
  color: var(--text-main);
  font-size: 13px;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
}
.locker-bk:hover { border-color: var(--accent); }
.locker-bk.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 4px 14px var(--shadow-glow, rgba(37, 99, 235, 0.3));
}
.locker-bk small { font-size: 11px; color: var(--text-faint); }
.locker-bk.is-active small { color: var(--text-sub); }
.locker-bk:disabled { opacity: .5; cursor: not-allowed; }
.locker-rec {
  font-style: normal; font-size: 10px; font-weight: 600;
  color: #fff; background: var(--accent);
  border-radius: 20px; padding: 1px 6px; margin-left: 6px;
  vertical-align: 1px;
}
.locker-sel {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm, 12px);
  background: var(--bg-input);
  color: var(--text-main);
  padding: 7px 10px;
  font-size: 13px;
  flex: 1;
  max-width: 220px;
}

/* 按钮 */
.locker-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%;
  margin-top: 4px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-sm, 12px);
  background: var(--btn-grad, #0d0d0d);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
}
.locker-btn:hover { opacity: .9; }
.locker-btn:active { transform: scale(.98); }
.locker-btn:disabled { opacity: .45; cursor: not-allowed; }
.locker-btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
}
.locker-btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.locker-btn-plain { background: transparent; color: var(--text-sub); }
.locker-btn-plain:hover { color: var(--accent); background: transparent; opacity: 1; }

/* 进度条 */
.locker-progress {
  display: flex; align-items: center; gap: 10px;
  margin-top: 12px;
}
.locker-progress[hidden] { display: none; }
.locker-bar {
  flex: 1;
  height: 6px;
  border-radius: 6px;
  background: var(--bg-hover-strong, rgba(0, 0, 0, 0.08));
  overflow: hidden;
}
.locker-bar i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 6px;
  background: var(--grad-accent, #2563eb);
  transition: width .15s;
}
.locker-progress span { font-size: 12px; color: var(--text-sub); min-width: 34px; text-align: right; }

/* 取件 */
.locker-pick-row { display: flex; gap: 10px; }
.locker-inp {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm, 12px);
  background: var(--bg-input);
  color: var(--text-main);
  padding: 10px 12px;
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.locker-inp:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--ring, rgba(37, 99, 235, 0.4)); }
.locker-pick-row .locker-btn { width: auto; margin-top: 0; }
.locker-pick-result { margin-top: 10px; font-size: 12.5px; color: var(--text-sub); }

/* 结果态 */
.locker-done { text-align: center; padding: 34px 24px; }
.locker-done-ok {
  width: 44px; height: 44px;
  margin: 0 auto 12px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 20px;
}
.locker-done h3 { font-size: 18px; margin: 0 0 6px; color: var(--text-main); }
.locker-done > p { margin: 0 auto 18px; font-size: 13px; color: var(--text-sub); max-width: 380px; }
.locker-code {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 10px;
  text-indent: 10px;
  color: var(--accent);
  padding: 14px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.locker-done-meta {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 16px;
  font-size: 12.5px; color: var(--text-sub);
  margin-bottom: 20px;
}
.locker-done-acts { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.locker-done-acts .locker-btn { width: auto; margin-top: 0; }
.locker-done .locker-progress { max-width: 420px; margin: 14px auto 0; }

/* 提示 toast */
.locker-toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%) translateY(16px);
  background: rgba(20, 20, 20, 0.88);
  color: #fff;
  font-size: 13px;
  padding: 9px 18px;
  border-radius: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 9999;
}
.locker-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== v111.1 ��ԭ��ԭ�� UI��door ˫�� / ����ͼ / pill / ��װ�б��� ===== */
.locker-door-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 860px) { .locker-door-grid { grid-template-columns: 1fr; } }
.locker-door {
  position: relative; display: block; cursor: pointer;
  background: var(--card); backdrop-filter: blur(16px);
  border: 1px solid var(--border); border-radius: var(--radius-lg, 18px);
  box-shadow: 0 1px 3px rgba(20,20,20,.05);
  padding: 22px 22px 18px; min-height: 190px; overflow: hidden;
  transition: transform .22s cubic-bezier(.2,.8,.3,1), box-shadow .22s;
  color: var(--text-main);
}
.locker-door:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(20,20,20,.12); }
.locker-door:active { transform: translateY(-1px); }
.locker-door-title { position: absolute; top: 20px; left: 22px; font-size: 18px; font-weight: 700; }
.locker-door-desc { position: absolute; top: 50px; left: 22px; max-width: 46%; font-size: 12.5px; color: var(--text-sub); line-height: 1.7; }
.locker-door svg { position: absolute; right: 16px; bottom: 10px; width: 128px; height: 96px; color: var(--accent); opacity: .85; transition: transform .25s; }
.locker-door:hover svg { transform: translateY(-3px) scale(1.04); }
.locker-door .go { position: absolute; bottom: 16px; left: 22px; font-size: 12px; color: var(--text-faint); }
.locker-door:hover .go { color: var(--accent); }

.locker-sub-top { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.locker-back {
  width: 34px; height: 34px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 50%;
  background: var(--card); color: var(--text-main);
  font-size: 16px; line-height: 1; cursor: pointer;
  transition: all .18s;
}
.locker-back:hover { border-color: var(--accent); color: var(--accent); transform: translateX(-2px); }
.locker-sub-top b { font-size: 17px; font-weight: 700; }

.locker-step-h { display: flex; align-items: center; gap: 8px; margin: 0 0 6px; font-size: 15px; font-weight: 600; }
.locker-step {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  font-size: 12px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}
.locker-hint { font-size: 12.5px; color: var(--text-sub); margin-bottom: 16px; }
.locker-drop-ico { font-size: 26px; opacity: .5; line-height: 1; }
.locker-drop-t { font-size: 14px; font-weight: 500; margin-top: 8px; color: var(--text-main); }
.locker-drop-s { font-size: 12px; color: var(--text-sub); margin-top: 3px; }

.locker-ttl-row { display: flex; gap: 8px; margin: 14px 0 4px; flex-wrap: wrap; }
.ttl-pill, .store-pill {
  border: 1px solid var(--border);
  background: var(--bg-input, rgba(255,255,255,.6));
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12.5px;
  color: var(--text-sub);
  cursor: pointer;
  transition: all .18s;
  user-select: none;
}
.ttl-pill:hover { color: var(--accent); border-color: var(--accent); }
.ttl-pill.on, .store-pill.on {
  background: var(--accent); border-color: var(--accent); color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(37,99,235,.3);
}
.store-label { font-size: 12px; color: var(--text-sub); margin: 16px 0 6px; }
.store-pill { display: inline-flex; align-items: baseline; gap: 7px; padding: 7px 15px; color: var(--text-main); }
.store-pill .quota { font-size: 11px; color: var(--text-faint); }
.store-pill:hover .quota { color: var(--accent); }
.store-pill.on .quota { color: rgba(255,255,255,.85); }
.store-pill.on:hover { color: #fff; }
.store-pill .rec {
  font-size: 10px; font-weight: 700;
  background: var(--accent-soft); color: var(--accent);
  border-radius: 6px; padding: 1px 6px; letter-spacing: .02em;
}
.store-pill.on .rec { background: rgba(255,255,255,.2); color: #fff; }
.store-badge {
  display: inline-block; font-size: 10.5px; font-weight: 700;
  border-radius: 6px; padding: 2px 7px;
  background: var(--accent-soft); color: var(--accent);
}

.locker-up-row { display: flex; align-items: center; margin-top: 14px; }
.locker-btn-inline { width: auto; margin-top: 0; padding: 10px 22px; }
.locker-upstatus { font-size: 12.5px; color: var(--text-sub); margin-left: 12px; }

/* ������б� */
.locker-item {
  display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm, 12px);
  padding: 12px 14px; margin-bottom: 10px;
  background: var(--bg-input, rgba(255,255,255,.55));
}
.locker-item .fname { flex: 1; min-width: 0; font-size: 13px; font-weight: 500; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.locker-item .fmeta { font-size: 11.5px; color: var(--text-faint); }
.locker-code-btn {
  font-family: Consolas, "SF Mono", monospace;
  font-size: 20px; font-weight: 700; letter-spacing: .14em;
  color: var(--accent); background: var(--accent-soft);
  border: none; border-radius: 10px; padding: 5px 12px;
  cursor: pointer; user-select: all;
  transition: transform .12s;
}
.locker-code-btn:hover { transform: scale(1.04); }
.locker-code-btn.copied { color: #2ecc71; background: rgba(46,204,113,.12); }
.locker-code-btn.fail { cursor: default; color: var(--err, #e74c3c); background: rgba(231,76,60,.1); }
.locker-upbar {
  height: 3px; border-radius: 3px;
  background: rgba(37,99,235,.12);
  margin-top: 8px; overflow: hidden;
  width: 100%;
}
.locker-upbar i { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 3px; transition: width .15s ease; }
.locker-upbar.err i { background: var(--err, #e74c3c); }
.locker-upbar.done { transition: opacity .4s; opacity: 0; }

/* ȡ�� */
.locker-pickinp {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm, 12px);
  padding: 11px 14px;
  font-size: 18px;
  font-family: Consolas, "SF Mono", monospace;
  letter-spacing: .3em;
  text-transform: uppercase;
  background: var(--bg-input, rgba(255,255,255,.7));
  color: var(--text-main);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  text-align: center;
}
.locker-pickinp:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.locker-pickinp::placeholder { letter-spacing: normal; font-size: 13px; color: var(--text-sub); }
.locker-pickresult {
  margin-top: 14px;
  border: 1px solid var(--border); border-radius: var(--radius-sm, 12px);
  padding: 14px 16px;
  background: var(--bg-input, rgba(255,255,255,.55));
  display: none;
}
.locker-pickresult.show { display: block; animation: lockerPopIn .28s cubic-bezier(.2,.8,.25,1); }
.locker-pickresult .row { display: flex; align-items: center; gap: 10px; }
.locker-pickresult .fn { flex: 1; min-width: 0; font-size: 14px; font-weight: 600; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.locker-pickresult .meta { font-size: 12px; color: var(--text-sub); margin-top: 4px; }
.locker-bad { border-radius: 8px; padding: 2px 8px; font-size: 11px; font-weight: 600; background: rgba(46,204,113,.12); color: #27ae60; }
.locker-expired { color: var(--err, #e74c3c); font-size: 13px; margin-top: 10px; display: none; }
.locker-dlwrap { margin-top: 10px; }
.locker-btn-sm { padding: 6px 14px; font-size: 13px; }
@keyframes lockerPopIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* locker v113：存储空间加载占位 */
.store-loading { display:inline-block; padding:8px 14px; border-radius:20px;
  background:var(--card); border:1px dashed var(--border); color:var(--muted);
  font-size:13px; }


/* ============ v114：寄存柜头部 + 上传/下载进度行 + 折线图刻度 ============ */
.locker-head { padding: 30px 0 20px; }
.locker-head-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.locker-view .page-title { font-size: 23px; font-weight: 700; letter-spacing: .5px; }
.locker-stats {
  display: inline-flex; align-items: center; padding: 4px 14px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--line, rgba(128,128,128,.18));
  font-size: 12px; color: var(--text-sub); white-space: nowrap;
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
}
.locker-view .page-sub { margin: 8px 0 0; font-size: 13px; color: var(--text-sub); }

.locker-uprow { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.locker-uprow .locker-upbar { flex: 1; margin-top: 0; min-width: 0; }
.locker-upmeta {
  font-size: 11px; color: var(--text-sub); white-space: nowrap;
  min-width: 96px; text-align: right; font-variant-numeric: tabular-nums;
}
.locker-upcancel {
  border: 1px solid var(--border); background: var(--bg-input); color: var(--text-sub);
  width: 22px; height: 22px; border-radius: 50%; font-size: 11px; line-height: 1;
  cursor: pointer; flex: none; padding: 0;
}
.locker-upcancel:hover { color: var(--err, #e74c3c); border-color: var(--err, #e74c3c); }
.locker-uprow.done .locker-upcancel,
.locker-uprow.err .locker-upcancel { display: none; }

.chart-tick { font-size: 9px; fill: var(--text-sub, #888); }
.chart-val { font-size: 10px; font-weight: 600; fill: var(--accent, #5b8cff); }


/* ============ v115：下载按钮紧凑 + 折线图标签调大 ============ */
.locker-pickresult .row .locker-btn {
  width: auto; flex: none; margin-top: 0;
  padding: 5px 16px; font-size: 12.5px; border-radius: 9px;
}
.chart-tick { font-size: 10.5px; fill: var(--text-sub, #888); }
.chart-val { font-size: 11.5px; font-weight: 700; fill: var(--accent, #5b8cff); }

/* ========== v131：留言板头像 = 渐变底 + 首字母（替代 identicon 格子） ========== */
.msg-item-ava.no-ava {
  background: #4d8df2;
  color: #fff;
  font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}


/* ========== v135：寄存柜文件列表（我的文件） ========== */
.locker-list { margin-top: 4px; }
.locker-list-empty { padding: 26px 16px; text-align: center; color: var(--text-sub); font-size: 13.5px; }
.locker-li {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background .15s;
}
.locker-li:last-child { border-bottom: none; }
.locker-li:hover { background: var(--accent-soft); }
.li-main { flex: 1; min-width: 0; }
.li-name { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.li-meta { font-size: 12px; color: var(--text-sub); margin-top: 3px; }
.li-ops { display: flex; gap: 6px; flex-shrink: 0; }
.li-btn {
  border: 1px solid var(--border); background: transparent;
  color: var(--text); font-size: 12px; padding: 4px 10px; border-radius: 8px;
  cursor: pointer; transition: all .15s; line-height: 1.4;
}
.li-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.li-btn.danger:hover { border-color: #e74c3c; color: #e74c3c; background: rgba(231, 76, 60, .08); }
.li-btn:disabled { opacity: .5; cursor: not-allowed; }
@media (max-width: 560px) {
  .locker-li { flex-wrap: wrap; }
  .li-ops { width: 100%; justify-content: flex-end; }
}


/* ========== v136：仪表盘重排 —— Token/API 顶部大卡 ========== */
.api-card {
  background: var(--card);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line, rgba(128,128,128,0.18));
  border-radius: 16px;
  padding: 14px 18px;
  margin: 12px 12px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
}
.api-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent, #5b8cff);
}
.api-head { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-sub); }
.api-badge {
  margin-left: auto;
  font-size: 10.5px; font-weight: 700; letter-spacing: .04em;
  padding: 2px 8px; border-radius: 999px;
  color: var(--accent, #5b8cff);
  background: var(--accent-soft, rgba(91,140,255,.1));
  border: 1px solid var(--line, rgba(128,128,128,.18));
}
.api-main { font-size: 26px; font-weight: 700; line-height: 1.25; }
.api-stats {
  display: flex; flex-wrap: wrap; gap: 8px 18px;
  margin-top: 2px;
}
.api-stat { display: flex; flex-direction: column; gap: 1px; }
.api-stat i { font-style: normal; font-size: 11px; color: var(--text-sub); }
.api-stat b { font-size: 15px; font-weight: 600; }


/* ========== v136：顶栏完全透明（去掉磨砂模糊，内容清晰透出） ========== */
.topbar {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom: none;
}
[data-theme="dark"] .topbar { background: transparent; }
.topbar-in { padding: 0 24px; }
/* 透明顶栏上按钮 hover 仍保留轻底色反馈 */
.topbar .col-btn:hover,
.topbar .theme-btn:hover { background: var(--bg-hover-tint); }

/* ========== v136：骨架屏（视图加载占位，shimmer 扫光） ========== */
.sk {
  position: relative;
  overflow: hidden;
  background: var(--bg-hover-tint, rgba(128,128,128,0.10));
  border-radius: 8px;
}
.sk::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.16), transparent);
  animation: sk-sweep 1.4s ease-in-out infinite;
}
@keyframes sk-sweep {
  to { transform: translateX(100%); }
}
.sk-row { display: flex; flex-direction: column; gap: 10px; }
.sk-line { height: 13px; border-radius: 6px; }
.sk-line.w60 { width: 60%; }
.sk-line.w80 { width: 80%; }
.sk-line.w40 { width: 40%; }
.sk-card {
  background: var(--card);
  border: 1px solid var(--line, rgba(128,128,128,0.18));
  border-radius: 14px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sk-card .sk-line { height: 14px; }
.sk-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 12px; }
.sk-grid .sk-line { height: 16px; }
@media (max-width: 900px) { .sk-grid { grid-template-columns: 1fr; } }

/* ========== v136：首页升级 —— hero 层次强化（克制增量） ========== */
.hero { position: relative; }
.hero-title {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.08;
  background: none;
  
  
  
  
  letter-spacing: -0.03em;
}
.hero-subtitle { font-size: clamp(14px, 1.6vw, 17px); }
.hero-badge {
  background: var(--card);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line, rgba(128,128,128,0.18));
  box-shadow: 0 4px 18px rgba(0,0,0,0.05);
}
.hero-actions { gap: 14px; }
/* 主按钮：渐变底 + 悬浮上浮 */
.btn-hero-primary {
  background: #3a67e8;
  box-shadow: 0 8px 24px rgba(91, 140, 255, 0.30);
  transition: transform .2s cubic-bezier(.2,.8,.25,1), box-shadow .2s ease;
}
.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(91, 140, 255, 0.38);
}
/* 功能卡：hover 上浮 + 图标微缩放 */
.feature-card {
  transition: transform .22s cubic-bezier(.2,.8,.25,1), box-shadow .22s ease, border-color .22s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.08);
}
.feature-card:hover .feature-icon svg { transform: scale(1.06); }
.feature-icon svg { transition: transform .22s ease; }

/* ============================================================
   v137：美术规范重构 —— 纯色系（黑白蓝红浅绿）· 固定窗口 · 顶栏穿透
        · 首页品牌化 · 仪表盘 KPI 3:7 · 骨架屏精细版
   ============================================================ */
/* --- 固定窗口：桌面端页面不滚动，内容区内部滚动（视口锁定） --- */
@media (min-width: 781px) {
  body { overflow: hidden; }
}

/* --- 顶栏真正穿透：内容从透明顶栏下方经过
       （v136 已透明无边框，但 .app top 让位 56px，顶栏下方只有 body 底色，
         滚动时内容穿不过去，看起来像实色条 —— 现在 .app 从视口顶开始） --- */
@media (min-width: 781px) {
  .app { top: 0; }
  .app > .view:not(.chat-view) { padding-top: var(--nav-height); }
}

/* --- 首页重做：品牌向 · 垂直居中 · 少提功能 · 标题 hover 特效 --- */
.home-view .main-content {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.home-view .hero {
  width: 100%;
  padding: 0 24px 6vh;
}
.hero-title {
  font-size: clamp(52px, 7.5vw, 104px) !important;
  line-height: 1.02;
  letter-spacing: -0.045em;
  color: var(--text-main);
  cursor: default;
  transition: color .35s ease, letter-spacing .55s cubic-bezier(.2,.8,.25,1), transform .55s cubic-bezier(.2,.8,.25,1);
  margin-bottom: 22px;
}
.hero-title:hover {
  color: var(--accent);
  letter-spacing: 0.01em;
  transform: translateY(-5px);
}
.hero-subtitle { color: var(--text-sub); margin-bottom: 30px; }
.hero-meta {
  margin-top: 44px;
  font-size: 11.5px;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: var(--text-faint);
  user-select: none;
}
.hero-badge {
  background: var(--card);
  border: 1px solid var(--line, rgba(128,128,128,0.18));
  box-shadow: none;
}
.btn-hero-primary {
  background: #3a67e8;
  border: 1px solid #3a67e8;
}
.btn-hero-primary:hover {
  background: #2f55c9;
  transform: translateY(-2px);
}

/* --- 仪表盘 KPI 行：本地占用:Token = 3:7（stats.js renderStatus 输出 .kpi-row） --- */
.kpi-row {
  display: grid;
  grid-template-columns: 3fr 7fr;
  gap: 16px;
  margin-bottom: 16px;
}
.kpi-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  min-height: 96px;
  box-sizing: border-box;
}
.kpi-card .kpi-label {
  font-size: 13px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 8px;
}
.kpi-card .kpi-val {
  font-size: 30px;
  font-weight: 700;
  margin-top: 8px;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}
.kpi-card .kpi-sub { font-size: 12px; color: var(--text-faint); margin-top: 4px; }
.kpi-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  letter-spacing: 0.04em;
}

/* --- 骨架屏重做：结构精细版（头像圆 + 多行 + 图块组合） --- */
.sk {
  position: relative;
  overflow: hidden;
  background: var(--bg-hover-tint);
  border-radius: 10px;
}
.sk-line {
  height: 12px;
  border-radius: 6px;
  background: var(--bg-hover-tint);
  margin: 0;
}
.sk-line.sk-w40 { width: 40%; }
.sk-line.sk-w60 { width: 60%; }
.sk-line.sk-w80 { width: 80%; }
.sk-avatar {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--bg-hover-tint);
  flex: none;
}
.sk-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
}
.sk-card {
  position: relative;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sk::after,
.sk-card::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.16), transparent);
  animation: sk-sweep 1.4s ease-in-out infinite;
}
.sk-title {
  height: 16px;
  width: 55%;
  border-radius: 8px;
  background: var(--bg-hover-tint);
}
.sk-block {
  height: 84px;
  border-radius: 10px;
  background: var(--bg-hover-tint);
}