/* ==========================================================================
   丸玩小站 · Windows 98 风格主题
   纯静态、零外部依赖，可直接上传宝塔 Linux (Nginx/Apache) 运行
   ========================================================================== */

:root {
  /* 经典 Win98 配色 */
  --desktop: #008080;              /* 桌面青色 */
  --face: #c0c0c0;                 /* 窗口/按钮底色 */
  --face-light: #dfdfdf;           /* 凸起内高光 */
  --face-dark: #808080;            /* 凸起内阴影 */
  --white: #ffffff;
  --black: #000000;
  --navy: #000080;                 /* 标题栏 / 选中 */
  --navy-2: #1084d0;               /* 标题栏渐变亮端 */
  --navy-inactive: #808080;
  --navy-inactive-2: #b5b5b5;
  --link: #0000ff;
  --taskbar-h: 42px;
  --font: "MS Sans Serif", "Microsoft Sans Serif", Tahoma, "Microsoft YaHei",
          "PingFang SC", "Hiragino Sans GB", sans-serif;
}

/* 高对比度模式（黑底 + 亮黄，Windows 高对比度经典方案） */
body.high-contrast {
  --desktop: #000000;
  --face: #000000;
  --face-light: #ffff00;
  --face-dark: #ffff00;
  --white: #ffff00;
  --black: #ffff00;
  --navy: #000000;
  --navy-2: #000000;
  --navy-inactive: #000000;
  --navy-inactive-2: #000000;
  --link: #00ffff;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;   /* 禁掉移动端下拉刷新 / 橡皮筋 */
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 12px;
  color: #000;
  background: var(--desktop);
  -webkit-font-smoothing: none;
  user-select: none;
  -webkit-user-select: none;
}

body.high-contrast { color: #ffff00; }

a { color: var(--link); }

/* ==========================================================================
   桌面
   ========================================================================== */
#desktop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: calc(var(--taskbar-h) + env(safe-area-inset-bottom, 0px));
  overflow: hidden;
  background: var(--desktop);
}

/* 桌面图标区：绝对定位，图标可自由拖动摆放 */
#desktop-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.icon-item {
  position: absolute;
  width: 78px;
  padding: 6px 3px 5px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  text-align: center;
  pointer-events: auto;
  touch-action: none;
}

/* 图标可以是 <a>（带真实链接，便于搜索引擎抓取），去掉链接默认下划线 */
a.icon-item {
  text-decoration: none;
  color: inherit;
  /* 图标是链接，但要禁止浏览器把它当"链接"拖出去（拖拽完全交给 app.js 自己处理） */
  -webkit-user-drag: none;
  user-drag: none;
}

.icon-item.dragging {
  z-index: 8;
  opacity: .85;
  cursor: move;
}

/* 框选虚线框 */
.marquee {
  position: absolute;
  z-index: 5;
  border: 1px dashed #ffffff;
  background: rgba(255, 255, 255, .16);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .3);
  pointer-events: none;
}

body.high-contrast .marquee {
  border-color: #ffff00;
  background: rgba(255, 255, 0, .14);
  box-shadow: none;
}

.icon-item .icon-glyph {
  width: 34px;
  height: 34px;
  display: block;
}

.icon-item .icon-label {
  color: #fff;
  font-size: 11px;
  line-height: 1.2;
  text-shadow: 1px 1px 0 #000;
  padding: 1px 2px;
  max-width: 74px;
  word-break: break-all;
}

body.high-contrast .icon-item .icon-label {
  color: #ffff00;
  text-shadow: none;
}

/* 选中态：蓝底白字 */
.icon-item.selected .icon-label {
  background: var(--navy);
  color: #fff;
  text-shadow: none;
}

.icon-item.selected .icon-glyph {
  filter: drop-shadow(0 0 0 #fff) brightness(1.15);
}

/* ==========================================================================
   通用凸起/凹陷立体边框
   ========================================================================== */
.bevel-up {
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-light) var(--face-dark) var(--face-dark) var(--face-light);
  box-shadow: -1px -1px 0 var(--white), 1px 1px 0 var(--black);
}

.bevel-down {
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  box-shadow: -1px -1px 0 var(--black), 1px 1px 0 var(--face-light);
}

/* ==========================================================================
   经典按钮
   ========================================================================== */
.win-btn {
  font-family: var(--font);
  font-size: 12px;
  color: #000;
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-light) var(--face-dark) var(--face-dark) var(--face-light);
  box-shadow: -1px -1px 0 var(--white), 1px 1px 0 var(--black);
  padding: 4px 14px;
  min-width: 74px;
  cursor: pointer;
  outline: none;
  text-align: center;
  vertical-align: middle;
}

body.high-contrast .win-btn { color: #ffff00; }

.win-btn:active,
.win-btn.pressed {
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  box-shadow: -1px -1px 0 var(--black), 1px 1px 0 var(--face-light);
  padding: 5px 13px 3px 15px; /* 按下时内容轻微偏移，模拟物理反馈 */
}

.win-btn:focus-visible {
  outline: 1px dotted #000;
  outline-offset: -4px;
}

.win-btn:disabled {
  color: var(--face-dark);
  text-shadow: 1px 1px 0 var(--white);
  cursor: default;
}

/* 标题栏右侧的小方形按钮（最小化/最大化/关闭） */
.titlebar-btn {
  width: 18px;
  height: 18px;
  padding: 0;
  min-width: 18px;
  font-size: 11px;
  line-height: 14px;
  font-family: "MS Sans Serif", Tahoma, sans-serif;
  font-weight: bold;
}

/* ==========================================================================
   窗口
   ========================================================================== */
#windows {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.win {
  position: absolute;
  min-width: 220px;
  min-height: 120px;
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-light) var(--black) var(--black) var(--face-light);
  box-shadow: -1px -1px 0 var(--white), 1px 1px 0 var(--face-dark), 4px 4px 8px rgba(0,0,0,.35);
  pointer-events: auto;
  display: flex;
  flex-direction: column;
}

.win.maximized {
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
}

.win-titlebar {
  height: 20px;
  background: linear-gradient(90deg, var(--navy), var(--navy-2));
  color: #fff;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 3px 0 4px;
  cursor: default;
  flex: 0 0 auto;
  touch-action: none;          /* 触屏拖动标题栏时不触发页面滚动 */
}

.win.inactive .win-titlebar {
  background: linear-gradient(90deg, var(--navy-inactive), var(--navy-inactive-2));
}

.win-titlebar .title-icon {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

.win-titlebar .title-text {
  flex: 1 1 auto;
  font-weight: bold;
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: .2px;
}

.win-titlebar .titlebar-btn { flex: 0 0 auto; }

.win-toolbar {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 5px 6px;
  border-bottom: 1px solid var(--face-dark);
  flex: 0 0 auto;
}

.win-body {
  flex: 1 1 auto;
  overflow: auto;
  padding: 10px 12px;
  background: var(--face);
}

.win-body iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  background: #fff;
}

.win-statusbar {
  flex: 0 0 auto;
  display: flex;
  gap: 4px;
  padding: 3px 4px;
  border-top: 1px solid var(--white);
  box-shadow: inset 0 1px 0 var(--face-dark);
}

.win-statusbar .status-cell {
  flex: 0 0 auto;
  padding: 2px 8px;
  border: 1px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  font-size: 11px;
  white-space: nowrap;
}

.win-statusbar .status-spacer { flex: 1 1 auto; }

/* ==========================================================================
   任务栏
   ========================================================================== */
#taskbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--taskbar-h) + env(safe-area-inset-bottom, 0px));
  background: var(--face);
  border-top: 2px solid var(--white);
  box-shadow: inset 0 1px 0 var(--face-dark);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 4px env(safe-area-inset-bottom, 0px);
  z-index: 5000;
}

#start-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 30px;
  padding: 0 8px 0 4px;
  min-width: 0;
  font-weight: bold;
  font-size: 13px;
}

#start-btn .start-logo {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

#start-btn.pressed { border-color: var(--face-dark) var(--white) var(--white) var(--face-dark); }

/* 任务栏分隔竖线 */
.taskbar-sep {
  width: 2px;
  height: 30px;
  flex: 0 0 auto;
  border-left: 1px solid var(--face-dark);
  border-right: 1px solid var(--white);
}

/* 任务栏窗口按钮 */
#taskbar-windows {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 3px;
  overflow: hidden;
  height: 100%;
}

.taskbar-window-btn {
  height: 30px;
  padding: 0 10px;
  min-width: 0;
  max-width: 160px;
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 5px;
}

.taskbar-window-btn.active {
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  box-shadow: -1px -1px 0 var(--black), 1px 1px 0 var(--face-light);
  background: repeating-conic-gradient(
    var(--face) 0% 25%, var(--white) 0% 50%
  ) 0 0/2px 2px;
  font-weight: bold;
}

/* 时钟 */
#clock {
  flex: 0 0 auto;
  height: 30px;
  padding: 0 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  font-size: 11px;
  line-height: 1.15;
  white-space: nowrap;
}

/* 备案信息（任务栏右侧托盘区）
   工信部要求首页底部悬挂备案号，这里放在任务栏里：
   不会被桌面图标遮挡、不占内容区、视觉上就是 Win98 的系统托盘。 */
#beian {
  flex: 0 1 auto;
  min-width: 0;
  height: 30px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  font-size: 10px;
  line-height: 1.15;
  color: var(--black);
  white-space: nowrap;
  overflow: hidden;
}

#beian a {
  color: inherit;
  text-decoration: none;
  white-space: nowrap;
}

#beian a:hover,
#beian a:focus-visible {
  text-decoration: underline;
}

#beian .sep {
  color: var(--face-dark);
}

/* 窄屏（手机）：字号再小一点，允许折成两行，两个备案号都不会被藏掉 */
@media (max-width: 700px) {
  #beian {
    flex-wrap: wrap;
    gap: 0 5px;
    font-size: 9px;
    white-space: normal;
  }

  #beian .sep { display: none; }
}

/* ==========================================================================
   开始菜单
   ========================================================================== */
#start-menu {
  position: fixed;
  left: 4px;
  bottom: calc(var(--taskbar-h) + 4px + env(safe-area-inset-bottom, 0px));
  width: 210px;
  background: var(--face);
  border: 2px solid;
  border-color: var(--white) var(--black) var(--black) var(--white);
  box-shadow: -1px -1px 0 var(--face-dark), 1px 1px 0 var(--face-light), 3px 3px 6px rgba(0,0,0,.35);
  z-index: 6000;
  display: flex;
}

#start-menu.hidden { display: none; }

.start-side {
  width: 26px;
  background: linear-gradient(180deg, var(--navy), var(--navy-2));
  color: #fff;
  font-weight: bold;
  font-size: 15px;
  letter-spacing: 2px;
  padding: 8px 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  flex: 0 0 auto;
}

.start-side span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.start-items {
  flex: 1 1 auto;
  padding: 4px;
  display: flex;
  flex-direction: column;
}

.start-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  font-size: 12px;
  cursor: pointer;
  color: #000;
}

body.high-contrast .start-item { color: #ffff00; }

.start-item .icon-glyph {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
}

.start-item:hover {
  background: var(--navy);
  color: #fff;
}

.start-sep {
  height: 2px;
  margin: 4px 2px;
  border-top: 1px solid var(--face-dark);
  border-bottom: 1px solid var(--white);
  flex: 0 0 auto;
}

/* ==========================================================================
   对话框 / 关于页正文排版
   ========================================================================== */
.win-body h2 { font-size: 13px; margin-bottom: 6px; }
.win-body p { margin-bottom: 8px; line-height: 1.6; }
.win-body ul { margin: 0 0 10px 20px; line-height: 1.7; }
.win-body .lede { font-size: 13px; font-weight: bold; }

.about-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  margin-bottom: 10px;
}

.about-banner .big-logo {
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
}

.about-banner .big-title {
  font-size: 20px;
  font-weight: bold;
  letter-spacing: 1px;
}

.about-banner .big-sub { font-size: 12px; color: #333; }
body.high-contrast .about-banner .big-sub { color: #ffff00; }

.footer-note {
  margin-top: 6px;
  padding: 6px 8px;
  font-size: 11px;
  color: #333;
}
body.high-contrast .footer-note { color: #ffff00; }

/* 「我的电脑」外链区（B 站） */
.link-box {
  margin-top: 12px;
  padding: 8px 10px 10px;
  border: 1px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
}

.link-box-title {
  font-size: 12px;
  font-weight: bold;
  margin-bottom: 8px;
}

.bili-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  text-decoration: none;
}

.bili-btn .bili-icon { width: 18px; height: 18px; flex: 0 0 auto; }
.bili-btn:active { padding: 4px 10px; }

.link-url {
  margin-top: 7px;
  font-size: 11px;
  color: #333;
  word-break: break-all;
}

body.high-contrast .link-url { color: #ffff00; }

/* ==========================================================================
   移动端 / 小屏适配
   ========================================================================== */
@media (max-width: 700px) {
  :root { --taskbar-h: 40px; }

  /* 桌面图标：略缩小，仍保证足够的点按面积 */
  .icon-item { width: 68px; }
  .icon-item .icon-glyph { width: 30px; height: 30px; }
  .icon-item .icon-label { font-size: 10.5px; }

  /* 任务栏：收紧，并隐藏日期只留时间 */
  #start-btn { min-width: 0; height: 30px; padding: 0 8px 0 4px; font-size: 12px; }
  #start-btn .start-logo { width: 17px; height: 17px; }
  .win-btn.taskbar-window-btn { min-width: 0; max-width: 104px; height: 30px; padding: 0 8px; }
  #clock { height: 30px; padding: 0 7px; }
  #clock-date { display: none; }

  /* 开始菜单：加大每一行的点按区域 */
  #start-menu { width: min(212px, calc(100vw - 8px)); }
  .start-item { padding: 9px 8px; }

  /* 窗口：放大标题栏与按钮，方便手指点 */
  .win { min-width: 0; }
  .win-titlebar { height: 26px; }
  .win-btn.titlebar-btn {
    width: 24px; height: 24px; min-width: 24px;
    padding: 0; line-height: 20px; font-size: 13px;
  }
  .win-btn:not(.titlebar-btn) { min-width: 62px; padding: 7px 12px; }
  .win-body { padding: 8px; }

  /* 「显示 属性」窗口：窄屏改为纵向堆叠，避免内部横向溢出 */
  .pv-wrap { padding: 4px 0 10px; }
  .pv-monitor { width: min(262px, 100%); }
  .pv-screen { height: 112px; }

  .pers-row { flex-direction: column; gap: 10px; }
  .pers-col, .pers-col--grow { flex: 0 0 auto; width: 100%; min-width: 0; }
  .bg-list { width: 100%; height: 122px; }

  .color-row { align-items: stretch; }
  .color-preview { width: 56px; height: 76px; }
  .color-right { min-width: 0; }

  .pers-actions { justify-content: stretch; }
  .pers-actions .win-btn { flex: 1 1 0; }
}

/* 极窄屏（iPhone SE 之类） */
@media (max-width: 360px) {
  .icon-item { width: 62px; }
  .color-row { flex-direction: column; }
  .color-preview { width: 100%; height: 52px; }

  /* 备案号必须完整可见（合规要求），靠缩小字号和留白来腾出空间，不能裁切 */
  #beian { font-size: 8px; padding: 0 5px; }
  #start-btn { padding: 0 6px 0 3px; }
  .win-btn.taskbar-window-btn { max-width: 76px; }
}

.win.minimized { display: none; }
.win.closed { display: none; }
.win--game .win-body { padding: 0; }
.icon-glyph svg, .title-icon svg, .start-logo svg { width: 100%; height: 100%; display: block; }
.win-btn.titlebar-btn:active { padding: 0; }

/* ==========================================================================
   个性化 · 显示 属性
   ========================================================================== */
.pv-wrap {
  display: flex;
  justify-content: center;
  padding: 6px 0 12px;
}

.pv-monitor {
  width: 262px;
  padding: 9px 9px 5px;
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-light) var(--face-dark) var(--face-dark) var(--face-light);
  box-shadow: -1px -1px 0 var(--white), 1px 1px 0 var(--black);
  border-radius: 8px 8px 0 0;
}

.pv-screen {
  height: 150px;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  background-color: #008080;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.pv-stand {
  width: 86px;
  height: 9px;
  margin: 0 auto;
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-light) var(--face-dark) var(--face-dark) var(--face-light);
}

.pers-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.pers-col { display: flex; flex-direction: column; }

.pers-label { font-size: 12px; margin-bottom: 4px; }

.bg-list {
  width: 158px;
  height: 238px;
  overflow: auto;
  background: #fff;
  color: #000;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  padding: 2px;
}

body.high-contrast .bg-list { background: #000; color: #ffff00; }

.bg-item {
  padding: 3px 6px;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bg-item.selected { background: var(--navy); color: #fff; }
body.high-contrast .bg-item.selected { background: #ffff00; color: #000; }

.pers-col--grow { flex: 1 1 auto; min-width: 0; }

.color-row { display: flex; gap: 10px; align-items: flex-start; }

/* 左侧：颜色实时预览 */
.color-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 0 0 auto;
}

.color-preview {
  width: 84px;
  height: 92px;
  background: #008080;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
}

.color-hex {
  margin-top: 6px;
  font-size: 11px;
  font-family: Consolas, "Courier New", monospace;
  letter-spacing: .5px;
}

/* 右侧：R / G / B 滑块 */
.color-right {
  flex: 1 1 auto;
  min-width: 110px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.slider-row { display: flex; align-items: center; gap: 6px; }

.slider-tag { width: 12px; flex: 0 0 auto; font-size: 12px; font-weight: bold; }

.slider-well {
  flex: 1 1 auto;
  min-width: 80px;
  padding: 1px 4px;
  background: var(--face);
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
}

.slider-val {
  width: 30px;
  flex: 0 0 auto;
  text-align: right;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.win-range {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  height: 20px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

.win-range::-webkit-slider-runnable-track {
  height: 8px;
  background: #9a9a9a;
  box-shadow: inset 0 0 0 1px #5f5f5f, inset 1px 1px 0 #000;
}

.win-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 20px;
  margin-top: -6px;
  background: var(--face);
  border: 2px solid;
  border-color: var(--white) var(--black) var(--black) var(--white);
  box-shadow: inset -1px -1px 0 var(--face-dark), inset 1px 1px 0 var(--face-light);
}

.win-range::-moz-range-track {
  height: 8px;
  background: #9a9a9a;
  box-shadow: inset 0 0 0 1px #5f5f5f, inset 1px 1px 0 #000;
}

.win-range::-moz-range-thumb {
  width: 10px;
  height: 18px;
  border-radius: 0;
  background: var(--face);
  border: 2px solid;
  border-color: var(--white) var(--black) var(--black) var(--white);
}

.win-range:focus { outline: 1px dotted #000; outline-offset: 1px; }

.pers-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 12px;
}

.win-select {
  font-family: var(--font);
  font-size: 12px;
  color: #000;
  background: #fff;
  border: 2px solid;
  border-color: var(--face-dark) var(--white) var(--white) var(--face-dark);
  padding: 1px 3px;
}

body.high-contrast .win-select { background: #000; color: #ffff00; }

.pers-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

/* ==========================================================================
   窗口缩放手柄（8 方向）
   ========================================================================== */
.win-resize { position: absolute; z-index: 6; touch-action: none; }

.win-resize[data-dir="n"] { top: -3px; left: 10px; right: 72px; height: 6px; cursor: n-resize; }
.win-resize[data-dir="s"] { bottom: -3px; left: 10px; right: 10px; height: 6px; cursor: s-resize; }
.win-resize[data-dir="w"] { left: -3px; top: 10px; bottom: 10px; width: 6px; cursor: w-resize; }
.win-resize[data-dir="e"] { right: -3px; top: 10px; bottom: 10px; width: 6px; cursor: e-resize; }

.win-resize[data-dir="nw"] { top: -4px; left: -4px; width: 10px; height: 10px; cursor: nw-resize; }
.win-resize[data-dir="ne"] { top: -4px; right: -4px; width: 10px; height: 10px; cursor: ne-resize; }
.win-resize[data-dir="sw"] { bottom: -4px; left: -4px; width: 10px; height: 10px; cursor: sw-resize; }
.win-resize[data-dir="se"] { bottom: -4px; right: -4px; width: 12px; height: 12px; cursor: se-resize; }

.win.maximized .win-resize { display: none; }

/* 拖动 / 缩放 / 框选期间，屏蔽 iframe 抢走鼠标事件 */
body.is-busy iframe { pointer-events: none; }