/* ============================================================
 *  Windows 镜像站 —— 纯静态站点样式
 *  主题：蓝白配色 · 浅圆角 · 轻动效
 *  布局：左侧固定导航 + 右侧内容区（版本 Tab + 镜像卡片）
 * ============================================================ */
@charset "utf-8";

:root {
  /* 蓝白主题：以 #2378e3 为主色，文字用深蓝灰，灰色阶均带蓝调 */
  --primary: #2378e3;        /* 主蓝（侧栏/主按钮/激活态/悬停） */
  --primary-dark: #1a63c4;   /* 深蓝（悬停加深） */
  --ink: #223a52;            /* 深蓝灰（标题文字） */
  --ink-2: #3d5878;          /* 次级深蓝灰 */
  --gray-7: #5d6c80;
  --gray-5: #8d99a9;
  --gray-3: #c9d4e0;
  --line: #e3eaf2;
  --bg: #f2f6fb;             /* 页面底色（蓝调浅灰） */
  --card: #ffffff;
  --text: #2d3f53;
  --muted: #7d8da0;
  --side-w: 200px;
  --r-lg: 14px;              /* 卡片圆角 */
  --r-md: 10px;              /* 输入/按钮圆角 */
  --r-sm: 7px;               /* 标签圆角 */
  --shadow: 0 1px 2px rgba(30, 80, 160, .04), 0 4px 16px rgba(30, 80, 160, .06);
  --shadow-hover: 0 2px 4px rgba(30, 80, 160, .05), 0 10px 26px rgba(30, 80, 160, .12);
  --ease: cubic-bezier(.4, 0, .2, 1);
}

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

body {
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", Helvetica, Arial, sans-serif;
  font-size: 13px;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

ul, li { list-style: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-weight: 600; }

::selection { color: #fff; background: var(--primary); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: rgba(35, 100, 180, .22); border-radius: 5px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: rgba(35, 100, 180, .38); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- 布局骨架 ---------- */
.layout { min-height: 100vh; min-width: 320px; padding-left: var(--side-w); }

.side {
  width: var(--side-w);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  background: var(--primary);
  color: #fff;
  z-index: 20;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 26px 18px 22px;
  color: #fff;
}
.logo svg { flex: 0 0 auto; }
.logo .logo-name { font-size: 16px; font-weight: 700; line-height: 1.3; letter-spacing: 1px; }
.logo .logo-sub { display: block; font-size: 10px; font-weight: 400; opacity: .6; letter-spacing: 3px; margin-top: 2px; }

.nav { flex: 1; padding: 0 12px; }
.nav .list li { margin-bottom: 4px; }
.nav .list li a {
  height: 38px; line-height: 38px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, .82);
  padding: 0 14px;
  display: block;
  border-radius: var(--r-md);
  transition: background-color .2s var(--ease), color .2s var(--ease), padding-left .2s var(--ease);
}
.nav .list li a:hover { background: rgba(255, 255, 255, .16); color: #fff; padding-left: 18px; text-decoration: none; }
.nav .list li.active a { background: #fff; color: var(--primary); }

.side .copyright {
  margin: 16px 18px 20px;
  font-size: 11px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .55);
  border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: 14px;
}

.main { overflow: hidden; }

/* 顶栏：白底粘性 + 毛玻璃 */
.header {
  height: 56px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  position: sticky;
  top: 0;
  z-index: 15;
  background: rgba(242, 246, 251, .85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(35, 100, 180, .08);
}
.header .list { display: flex; font-size: 13px; font-weight: 500; }
.header .list li { margin-left: 6px; }
.header .list li a {
  height: 34px; line-height: 34px;
  padding: 0 14px;
  display: block;
  border-radius: 999px;
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.header .list li a:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* ---------- 顶栏"常用网站"下拉菜单 ---------- */
.header .dd { position: relative; }
.header .dd-toggle {
  height: 34px; line-height: 34px;
  padding: 0 14px;
  margin-right: 10px;
  display: block;
  border-radius: 999px;
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.header .dd-toggle:hover,
.header .dd.open .dd-toggle { background: var(--primary); color: #fff; }
.dd-caret {
  display: inline-block;
  width: 0; height: 0;
  margin-left: 2px;
  vertical-align: 2px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform .2s var(--ease);
}
.header .dd.open .dd-caret { transform: rotate(180deg); }

.header .dd-panel {
  position: absolute;
  right: 0; top: 44px;
  width: 296px;
  padding: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
  z-index: 60;
}
.header .dd.open .dd-panel { opacity: 1; visibility: visible; transform: none; }

.dd-item {
  display: block;
  padding: 9px 12px;
  border-radius: var(--r-md);
  transition: background-color .15s var(--ease);
}
.dd-item:hover { background: #edf4fd; text-decoration: none; }
.dd-item b {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.dd-item span { display: block; font-size: 11px; color: var(--muted); margin-top: 2px; }
.dd-item.dd-more {
  margin-top: 6px;
  padding-top: 12px;
  padding-bottom: 12px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  border-top: 1px solid var(--line);
}
.dd-item.dd-more:hover { background: var(--primary); color: #fff; }
.dd-badge {
  flex: 0 0 auto;
  font-style: normal;
  font-size: 10px;
  font-weight: 500;
  line-height: 1;
  padding: 3px 6px;
  color: #fff;
  background: var(--primary);
  border-radius: 999px;
}

/* ---------- 网站导航页 ---------- */
.link-cat {
  margin-bottom: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.link-cat > .title {
  height: 52px; line-height: 52px;
  border-bottom: 1px solid var(--line);
}
.link-cat > .title h1 {
  font-size: 15px;
  padding-left: 20px;
  color: var(--ink);
  font-weight: 600;
}
.link-cat > .title h1::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  margin: 0 10px 2px 0;
}
.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(225px, 1fr));
  gap: 12px;
  padding: 18px 20px 20px;
}
.link-card {
  display: block;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.link-card:hover {
  text-decoration: none;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.link-card .lc-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.link-card .lc-desc { font-size: 12px; color: var(--muted); line-height: 1.7; margin-top: 5px; }
.link-card .lc-url {
  font-size: 11px;
  color: var(--gray-5);
  margin-top: 6px;
  font-family: Consolas, Monaco, monospace;
  word-break: break-all;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media screen and (max-width: 767px) {
  .header .dd-panel { position: fixed; left: 12px; right: 12px; top: 62px; width: auto; }
  .link-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; padding: 14px; }
}

.menu-btn { display: none; }

.container { margin: 22px; max-width: 1080px; }

/* ---------- 版本 Tab（胶囊形） ---------- */
/* 注意：这里不能加 overflow:hidden——Tab 悬停会上浮 1px，加了会把圆角和投影裁掉 */
.menu { margin-bottom: 4px; }
.menu ul { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; font-weight: 600; }
.menu li {
  height: 32px; line-height: 32px;
  padding: 0 4px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease), transform .15s var(--ease);
}
.menu li a { padding: 0 12px; display: block; }
.menu li:hover { border-color: var(--primary); transform: translateY(-1px); }
.menu li.active { background-color: var(--primary); border-color: var(--primary); color: #fff; }
.menu li.active i { display: none; }

/* ---------- 搜索框 ---------- */
.search-bar { position: relative; margin: 14px 0 18px; max-width: 420px; }
.search-bar .search-input {
  width: 100%;
  height: 38px; line-height: 38px;
  padding: 0 38px 0 16px;
  font-size: 13px;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  outline: 0;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.search-bar .search-input::placeholder { color: #a5b3c4; }
.search-bar .search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(35, 120, 227, .13); }
.search-bar .search-clear {
  position: absolute; right: 6px; top: 6px;
  width: 26px; height: 26px; line-height: 24px;
  text-align: center;
  border-radius: 50%;
  color: #97a6b8;
  cursor: pointer;
  display: none;
  font-size: 15px;
  background: var(--bg);
}
.search-bar .search-clear:hover { color: var(--primary); }
.search-bar .search-clear.show { display: block; }
.search-empty {
  padding: 26px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  display: none;
}

/* ---------- 说明卡片（关于页） ---------- */
.explain {
  margin-bottom: 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.explain .title {
  height: 52px; line-height: 52px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.explain .title h1 {
  font-size: 15px;
  padding-left: 20px;
  color: var(--ink);
  position: relative;
}
.explain .title h1::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  margin: 0 10px 2px 0;
}
.explain .content { padding: 18px 20px; font-size: 14px; }
.explain .content .p { line-height: 2.1; margin-left: 18px; }
.explain .content .p li { list-style: outside disc; color: var(--gray-7); }
.explain .content a { color: var(--primary); font-weight: 600; border-bottom: 1px solid var(--gray-3); }
.explain .content a:hover { border-bottom-color: var(--primary); }

/* ---------- 首页系统入口卡片 ---------- */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 22px;                 /* 卡片间距加大，给圆角和悬停投影留出空间 */
  padding: 6px;              /* 避免悬停上浮时阴影贴边被裁 */
  margin: -6px -6px 24px;    /* 用负边距抵消 padding，保持与下方内容对齐 */
}
.home-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 22px;
  display: block;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.home-card:hover {
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.home-card .hc-name { font-size: 18px; color: var(--ink); font-weight: 700; margin-bottom: 8px; }
.home-card .hc-meta { font-size: 12px; color: var(--muted); line-height: 1.9; }
.home-card .hc-meta b { color: var(--primary); font-weight: 700; }

/* ---------- 镜像卡片 ---------- */
.msdn .box {
  padding: 20px;
  margin-bottom: 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.msdn .box:hover { border-color: var(--gray-3); box-shadow: var(--shadow-hover); }
.msdn .box .name { line-height: 26px; margin-bottom: 4px; overflow: hidden; }
.msdn .box .name h1 { float: left; line-height: 1.35; font-size: 21px; }
.msdn .box .name .toggle {
  float: left;
  color: var(--muted);
  margin: 4px 0 0 14px;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 1px dashed var(--gray-3);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.msdn .box .name .toggle:hover { color: var(--primary); border-bottom-color: var(--primary); }
.msdn .box .tag { margin-top: 12px; overflow: hidden; }
.msdn .box .tag span {
  float: left;
  height: 24px; line-height: 24px;
  padding: 0 10px;
  margin: 0 8px 8px 0;
  background-color: #eef3f9;
  color: var(--gray-7);
  font-size: 12px;
  border-radius: var(--r-sm);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.msdn .box .tag span.bit { background-color: var(--primary); color: #fff; font-weight: 600; }
.msdn .box .tag span.lang { background-color: #5a97e8; color: #fff; }
.msdn .box .tag span.date { background-color: #fff; color: var(--gray-7); border: 1px solid var(--gray-3); }

/* 修复：悬停只加深"版本列表"浅灰标签的文字，绝不改动深色标签（bit/lang）的颜色，
   否则深底深字，标签看起来像变透明了 */
.msdn .box:hover .tag span:not(.bit):not(.lang):not(.date) { color: var(--text); }

.msdn .box .detail { display: none; }
.msdn .box.current { cursor: auto; border-color: var(--primary); box-shadow: var(--shadow-hover); }
.msdn .box.current:hover { border-color: var(--primary); }
.msdn .box.current .detail { display: block; animation: fadeIn .25s var(--ease); }
.msdn .box.current .name .toggle { display: none; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

.msdn .box .param { width: 100%; margin-top: 8px; }
.msdn .box .param tr { line-height: 1.7; }
.msdn .box .param td { padding: 5px; }
.msdn .box .param .param-name { width: 70px; text-align: right; font-weight: 700; white-space: nowrap; color: var(--muted); }
.msdn .box .param .param-value { font-size: 13px; word-break: break-all; }
.msdn .box .param .param-value code,
.param-value .hash { font-family: Consolas, Monaco, monospace; }

.msdn .box .empty {
  font-size: 13px; color: var(--muted);
  padding: 14px 16px;
  margin-top: 12px;
  background: #f5f8fc;
  border: 1px dashed var(--gray-3);
  border-radius: var(--r-md);
}

/* ---------- 下载渠道行 ---------- */
.download { overflow: hidden; }
.download .item {
  height: 42px; line-height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  margin-top: 12px;
  overflow: hidden;
  position: relative;
  font-weight: 500;
  font-size: 12px;
  background: var(--card);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.download .item:hover { border-color: var(--gray-3); box-shadow: 0 2px 8px rgba(30, 80, 160, .07); }
.download .item .label {
  float: left;
  width: 96px;
  text-align: center;
  background-color: #f5f8fc;
  border-right: 1px solid var(--line);
  font-weight: 600;
  color: var(--gray-7);
}
/* "访问"直达按钮：与"复制"同款式，位于复制按钮左侧 */
.download .item .visit {
  float: right;
  width: 58px;
  text-align: center;
  background-color: #f5f8fc;
  border-left: 1px solid var(--line);
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.download .item .visit:hover { background: var(--primary); color: #fff; }
/* 双按钮行：输入框区为"复制+访问"腾出位置 */
.download .item.has-visit .edit { right: 178px; }
/* 带下载工具说明的行（ed2k/BT）：输入框区为"复制+说明"腾出位置 */
.download .item .help ~ .edit { right: 156px; }
.download .item .edit {
  position: absolute;
  left: 106px; right: 118px;
  height: 42px;
  overflow: hidden;
}
.download .item .input {
  width: 100%; height: 42px;
  border: none;
  outline: 0;
  background: transparent;
  font-size: 12px;
  color: var(--text);
  padding: 0 10px;
}
.download .item .copy,
.download .item .open {
  float: right;
  text-align: center;
  background-color: #f5f8fc;
  border-left: 1px solid var(--line);
  cursor: pointer;
  user-select: none;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.download .item .copy { width: 58px; font-weight: 600; }
.download .item .copy:hover { background: var(--primary); color: #fff; }
.download .item .help {
  float: right;
  width: 88px;
  text-align: center;
  background-color: #f5f8fc;
  border-left: 1px solid var(--line);
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.download .item .help:hover { background: var(--primary-dark); color: #fff; }

.download .clear { overflow: hidden; }
.download .item.url { float: left; width: 65%; }
.download .item.pass { float: right; width: 30%; }

/* ---------- 帮助弹窗 ---------- */
.dialog-mask {
  position: fixed; inset: 0;
  background: rgba(25, 50, 85, .4);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 99;
  display: none;
  animation: fadeIn .2s var(--ease);
}
.dialog-mask.show { display: block; }
.dialog {
  width: min(480px, 92vw);
  max-height: 80vh;
  overflow: auto;
  background: #fff;
  border-radius: var(--r-lg);
  position: fixed;
  left: 50%; top: 16%;
  transform: translateX(-50%);
  z-index: 100;
  box-shadow: 0 24px 60px rgba(20, 60, 120, .25);
  animation: pop .22s var(--ease);
}
@keyframes pop { from { opacity: 0; transform: translateX(-50%) translateY(10px); } to { opacity: 1; transform: translateX(-50%); } }
.dialog .dialog-title {
  height: 50px; line-height: 50px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}
.dialog .dialog-close {
  float: right;
  width: 40px;
  height: 40px; line-height: 40px;
  margin-top: 5px;
  text-align: center;
  cursor: pointer;
  color: #97a6b8;
  font-size: 20px;
  border-radius: 50%;
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.dialog .dialog-close:hover { background: #edf4fd; color: var(--primary); }
.dialog .dialog-body { padding: 18px; font-size: 14px; line-height: 2; color: var(--gray-7); }
.dialog .dialog-body code {
  margin: 0 4px;
  padding: 2px 7px;
  background: #f2f6fb;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: Consolas, Monaco, monospace;
  font-size: 12px;
  color: var(--text);
  word-break: break-all;
}
.dialog .dialog-body a { color: var(--primary); font-weight: 600; border-bottom: 1px solid var(--gray-3); }
.dialog .dialog-body a:hover { border-bottom-color: var(--primary); }

/* ---------- 复制成功提示 ---------- */
.toast {
  position: fixed;
  left: 50%; top: 12%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 11px 24px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  z-index: 200;
  display: none;
  box-shadow: 0 8px 24px rgba(35, 120, 227, .3);
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 22px; bottom: 22px;
  width: 46px; height: 46px;
  line-height: 46px;
  text-align: center;
  color: #fff;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  z-index: 9;
  font-size: 12px;
  font-weight: 600;
  display: none;
  box-shadow: var(--shadow-hover);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.back-to-top:hover { transform: translateY(-3px); background: var(--primary-dark); }

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  padding: 12px 0 30px;
  color: #9fb0c2;
  font-size: 12px;
  line-height: 1.9;
}

/* ---------- 友情链接 ---------- */
.friend-links { margin-bottom: 2px; }
.friend-links .fl-label { color: #9fb0c2; }
.friend-links a {
  color: var(--primary);
  font-weight: 600;
  margin: 0 6px;
  border-bottom: 1px solid transparent;
}
.friend-links a:hover { border-bottom-color: var(--primary); }

/* ---------- 移动端 ---------- */
@media screen and (max-width: 767px) {
  .layout { padding-left: 0; }
  .side {
    display: none;
    width: 100%;
    z-index: 98;
  }
  .side.open { display: block; }
  .menu-btn {
    display: block;
    position: fixed;
    top: 13px; left: 14px;
    width: 30px; height: 30px;
    cursor: pointer;
    z-index: 101;
  }
  .menu-btn::before { content: "\2630"; font-size: 21px; color: var(--primary); }
  .header { height: 56px; position: fixed; top: 0; left: 0; right: 0; justify-content: flex-end; }
  .header .list li:first-child { margin-left: 0; }
  .header .list li a { padding: 0 10px; }
  .header .list li.hide-mobile { display: none; }
  .container { margin: 68px 14px 14px; }
  .msdn .box .name h1 { font-size: 18px; }
  .download .item.url,
  .download .item.pass { width: 47%; }
  .download .item .edit { right: 64px; }
  .download .item.has-visit .edit { right: 124px; }
  .download .item .help ~ .edit { right: 64px; }
  .download .item .help { display: none; }
  .back-to-top { right: 14px; bottom: 14px; }
}

@media screen and (max-width: 575px) {
  .header .list li:last-child { display: none; }
  .download .item.url,
  .download .item.pass { float: none; width: 100%; }
  .download .item .edit { right: 64px; }
}