/* ==========================================================================
   云栖论坛 · 主样式
   纯黑白灰配色：深色主题 = 黑底白字，浅色主题 = 白底黑字
   ========================================================================== */

:root {
  /* 深色：黑底白字 */
  --bg: #0a0a0a;
  --bg-2: #101010;
  --card: #141414;
  --card-2: #1c1c1c;
  --line: #2b2b2b;
  --line-2: #3a3a3a;
  --text: #f5f5f5;
  --text-2: #a8a8a8;
  --text-3: #707070;
  --primary: #ffffff;          /* 主色 = 白 */
  --primary-fg: #0a0a0a;       /* 主色上的文字 = 黑 */
  --soft: rgba(255, 255, 255, .08);
  --soft-2: rgba(255, 255, 255, .14);
  --code-bg: #000000;
  --code-fg: #f0f0f0;
  --card-shadow: none;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .55);
  --max: 1200px;
}

html[data-theme="light"] {
  /* 浅色：白底黑字 */
  --bg: #ffffff;
  --bg-2: #ffffff;
  --card: #ffffff;
  --card-2: #f5f5f5;
  --line: #e3e3e3;
  --line-2: #cfcfcf;
  --text: #0a0a0a;
  --text-2: #565656;
  --text-3: #949494;
  --primary: #0a0a0a;          /* 主色 = 黑 */
  --primary-fg: #ffffff;
  --soft: rgba(0, 0, 0, .05);
  --soft-2: rgba(0, 0, 0, .10);
  --code-bg: #f6f6f6;
  --code-fg: #111111;
  --card-shadow: 0 1px 2px rgba(0, 0, 0, .04);
  --shadow: 0 8px 26px rgba(0, 0, 0, .10);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

/* 浅色主题下给卡片一点极淡的层次（深色主题靠边框区分） */
.post-card, .side-card, .cat-card, .cat-head, .post-detail, .comments, .reply-box,
.panel, .mod-item, .card-form, .card-pad, .filter-bar, .feed-tabs, .admin-side,
.kpi, .stat-grid div, .preview, .ai-note, .diag, .driver-opt {
  box-shadow: var(--card-shadow);
}

/* 界面上的功能性图标统一灰度化，保持整体黑白（帖子正文里用户自己的表情不受影响） */
.pc-stats span, .pd-stats > span, .like-btn,
.cat-icon, .cc-icon, .ph-icon, .empty-icon,
.admin-side nav .mi, .admin-brand, .brand-logo {
  filter: grayscale(1);
}
.cat-icon, .cc-icon, .pc-stats span, .pd-stats > span { opacity: .72; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 14.5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--text); text-decoration: none; }
a:hover { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
code, pre, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
img { max-width: 100%; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: var(--primary); color: var(--primary-fg); padding: 6px 12px; border-radius: 6px; z-index: 99; }

/* ── 顶部栏 ─────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--max); margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-logo {
  width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px;
  background: var(--primary); color: var(--primary-fg); font-size: 16px;
}
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  padding: 6px 12px; border-radius: 999px; color: var(--text-2); font-weight: 500; white-space: nowrap;
}
.main-nav a:hover { background: var(--card-2); color: var(--text); text-decoration: none; }
.main-nav a.active { background: var(--primary); color: var(--primary-fg); }

.search { flex: 1; max-width: 340px; display: flex; background: var(--card); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.search input { flex: 1; border: 0; background: transparent; color: var(--text); padding: 7px 14px; outline: none; font-size: 13.5px; }
.search input::placeholder { color: var(--text-3); }
.search button { border: 0; background: transparent; color: var(--text-3); padding: 0 12px; cursor: pointer; }
.search button:hover { color: var(--text); }
.search:focus-within { border-color: var(--text-3); }

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  background: var(--card); border: 1px solid var(--line); color: var(--text-2);
  width: 34px; height: 34px; border-radius: 9px; cursor: pointer; font-size: 15px;
}
.icon-btn:hover { color: var(--text); border-color: var(--text-3); }
.nav-toggle { display: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: var(--card-2); color: var(--text); cursor: pointer; font-size: 13.5px;
  font-family: inherit; line-height: 1.4; white-space: nowrap; transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--soft); border-color: var(--text-3); text-decoration: none; color: var(--text); }
.btn-primary { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 600; }
.btn-primary:hover { background: var(--primary); color: var(--primary-fg); opacity: .85; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text-2); }
.btn-ghost:hover { border-color: var(--text-2); color: var(--text); }
.btn-ok { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 600; }
.btn-ok:hover { color: var(--primary-fg); opacity: .85; }
.btn-danger { background: transparent; color: var(--text); border-color: var(--text-3); }
.btn-danger:hover { border-color: var(--text); background: var(--soft); }
.btn-sm { padding: 4px 10px; font-size: 12.5px; }
.btn-lg { padding: 10px 20px; font-size: 15px; }
.btn-block { width: 100%; }
.link-btn { background: none; border: 0; color: var(--text-3); cursor: pointer; font: inherit; padding: 0; }
.link-btn:hover { color: var(--text); text-decoration: underline; }
.link-danger { color: var(--text-2) !important; border-color: var(--text-3) !important; }
.link-danger:hover { color: var(--text) !important; }
.inline-form { display: inline; }

.user-menu { position: relative; }
.user-trigger {
  display: flex; align-items: center; gap: 8px; background: var(--card); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px 12px 3px 3px; cursor: pointer; color: var(--text); font: inherit;
}
.user-trigger:hover { border-color: var(--text-3); }
.dropdown {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 180px; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 6px; display: none; flex-direction: column; z-index: 60;
}
.dropdown.open { display: flex; }
.dropdown a, .dropdown button {
  text-align: left; padding: 8px 12px; border-radius: 7px; color: var(--text-2);
  background: none; border: 0; cursor: pointer; font: inherit; width: 100%;
}
.dropdown a:hover, .dropdown button:hover { background: var(--card-2); color: var(--text); text-decoration: none; }

.notice-bar { background: var(--card-2); border-bottom: 1px solid var(--line); }
.notice-inner { max-width: var(--max); margin: 0 auto; padding: 7px 16px; font-size: 13px; color: var(--text-2); }

/* ── 布局 ───────────────────────────────────────────────────────────────── */
.container { max-width: var(--max); margin: 0 auto; padding: 22px 16px 60px; }
.container.wide { max-width: 1400px; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 296px; gap: 20px; align-items: start; }
.feed { min-width: 0; display: flex; flex-direction: column; gap: 12px; }

.feed-tabs { display: flex; gap: 6px; padding: 6px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.feed-tabs a { padding: 6px 16px; border-radius: var(--radius-sm); color: var(--text-2); font-weight: 500; }
.feed-tabs a:hover { background: var(--card-2); color: var(--text); text-decoration: none; }
.feed-tabs a.active { background: var(--primary); color: var(--primary-fg); }

/* ── 帖子卡片 ───────────────────────────────────────────────────────────── */
.post-card {
  display: flex; gap: 14px; padding: 14px 16px; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .15s;
}
.post-card:hover { border-color: var(--line-2); }
.pc-avatar { flex: none; }
.pc-main { flex: 1; min-width: 0; }
.pc-title { margin: 0 0 6px; font-size: 16px; line-height: 1.45; font-weight: 600; }
.pc-title a { color: var(--text); }
.pc-title a:hover { text-decoration: underline; text-underline-offset: 4px; }
.pc-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-3); }
.pc-cat { color: var(--text-2); background: var(--card-2); border: 1px solid var(--line); padding: 1px 9px; border-radius: 999px; font-weight: 500; }
.pc-cat:hover { text-decoration: none; border-color: var(--text-3); }
.pc-author { color: var(--text-2); }
.dot { opacity: .5; }
.pc-stats { display: flex; flex-direction: column; gap: 4px; align-items: flex-end; font-size: 12.5px; color: var(--text-3); flex: none; }

.tag { font-size: 12px; padding: 1px 8px; border-radius: 999px; background: transparent; color: var(--text-3); border: 1px solid var(--line); }
.tag:hover { color: var(--text); border-color: var(--text-3); text-decoration: none; }
.tag-pin { border-color: var(--text); color: var(--text); font-weight: 600; }
.tag-feature { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 600; }

/* ── 侧栏 ───────────────────────────────────────────────────────────────── */
.sidebar { display: flex; flex-direction: column; gap: 14px; position: sticky; top: 74px; }
.side-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.side-title { margin: 0 0 10px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); font-weight: 600; }
.cat-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.cat-list a { display: flex; align-items: center; gap: 9px; padding: 7px 8px; border-radius: var(--radius-sm); color: var(--text-2); }
.cat-list a:hover { background: var(--card-2); color: var(--text); text-decoration: none; }
.cat-icon { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 7px; font-size: 13px; background: var(--card-2); border: 1px solid var(--line); }
.cat-name { flex: 1; }
.cat-count { font-size: 12px; color: var(--text-3); }
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat-grid div { background: var(--card-2); border-radius: var(--radius-sm); padding: 8px 10px; text-align: center; }
.stat-grid b { display: block; font-size: 17px; color: var(--text); }
.stat-grid span { font-size: 12px; color: var(--text-3); }
.hot-list { margin: 0; padding-left: 18px; color: var(--text-2); font-size: 13.5px; }
.hot-list li { margin-bottom: 5px; }
.hot-list a { color: var(--text-2); }
.hot-list a:hover { color: var(--text); }
.user-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; border-radius: 50%; }

/* ── 版块页 ─────────────────────────────────────────────────────────────── */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.cat-card { display: flex; gap: 14px; padding: 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.cat-card:hover { border-color: var(--line-2); text-decoration: none; }
.cc-icon { width: 46px; height: 46px; flex: none; display: grid; place-items: center; font-size: 22px; border-radius: 12px; background: var(--card-2); border: 1px solid var(--line); }
.cc-body h3 { margin: 0 0 4px; font-size: 15.5px; color: var(--text); }
.cc-body p { margin: 0 0 6px; color: var(--text-3); font-size: 13px; }
.cc-meta { font-size: 12.5px; color: var(--text-3); }

.page-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.page-head h1 { margin: 0; font-size: 22px; }
.cat-head { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--text-3); border-radius: var(--radius); padding: 16px; }
.ph-icon { font-size: 30px; }
.ph-actions { margin-left: auto; }
.muted { color: var(--text-3); }
.small { font-size: 12.5px; }
.strong { font-weight: 600; }
.nowrap { white-space: nowrap; }
.text-danger { color: var(--text) !important; font-weight: 600; }
.card-pad { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }

/* ── 帖子详情 ───────────────────────────────────────────────────────────── */
.post-wrap { display: flex; flex-direction: column; gap: 18px; max-width: 980px; margin: 0 auto; }
.breadcrumb { font-size: 13px; color: var(--text-3); }
.post-detail { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.pd-title { margin: 0 0 14px; font-size: 23px; line-height: 1.4; }
.pd-sub { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.pd-author { display: flex; align-items: center; gap: 10px; color: var(--text-2); }
.pd-author:hover { text-decoration: none; }
.pd-author small { display: block; color: var(--text-3); font-size: 12px; }
.pd-stats { display: flex; gap: 14px; color: var(--text-3); font-size: 13px; align-items: center; }
.like-btn { background: var(--card-2); border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; color: var(--text-2); cursor: pointer; font: inherit; }
.like-btn:hover { border-color: var(--text-3); color: var(--text); }
.like-btn.liked { background: var(--primary); border-color: var(--primary); color: var(--primary-fg); }
.pd-content { padding: 18px 0; font-size: 15px; }
.pd-tags { display: flex; gap: 8px; flex-wrap: wrap; padding-bottom: 12px; }
.pd-actions { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 14px; border-top: 1px solid var(--line); }

/* 富文本 */
.rich-content { word-wrap: break-word; overflow-wrap: anywhere; }
.rich-content h1, .rich-content h2, .rich-content h3 { margin: 20px 0 10px; line-height: 1.4; }
.rich-content h2 { font-size: 19px; } .rich-content h3 { font-size: 16.5px; }
.rich-content p { margin: 10px 0; }
.rich-content img { border-radius: var(--radius-sm); margin: 8px 0; max-height: 620px; object-fit: contain; border: 1px solid var(--line); }
.rich-content blockquote { margin: 12px 0; padding: 10px 16px; border-left: 2px solid var(--text-3); background: var(--card-2); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-2); }
.rich-content pre, .rich-content .code-block { background: var(--code-bg); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; overflow-x: auto; font-size: 13px; margin: 12px 0; color: var(--code-fg); }
.rich-content code { background: var(--card-2); padding: 1px 6px; border-radius: 5px; font-size: .92em; }
.rich-content pre code { background: none; padding: 0; color: inherit; }
.rich-content table { border-collapse: collapse; margin: 12px 0; width: 100%; }
.rich-content th, .rich-content td { border: 1px solid var(--line); padding: 7px 10px; }
.rich-content th { background: var(--card-2); }
.rich-content ul, .rich-content ol { padding-left: 22px; }
.rich-content hr { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }
.rich-content video, .rich-video { max-width: 100%; border-radius: var(--radius-sm); margin: 10px 0; background: #000; }
.rich-embed { position: relative; margin: 12px 0; border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--line); }
.rich-embed iframe { border: 0; width: 100%; display: block; }
.rich-content details { margin: 10px 0; padding: 8px 12px; background: var(--card-2); border-radius: var(--radius-sm); }
.rich-content summary { cursor: pointer; font-weight: 600; }

/* 注释 / 回复 */
.comments { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.section-title { margin: 0 0 14px; font-size: 16px; }
.section-title .count { color: var(--text-3); font-weight: 400; }
.comment { display: flex; gap: 12px; padding: 14px 0; border-top: 1px solid var(--line); }
.comment:first-of-type { border-top: 0; }
.c-body { flex: 1; min-width: 0; }
.c-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; }
.c-name { font-weight: 600; color: var(--text); }
.c-floor, .c-time { color: var(--text-3); font-size: 12.5px; }
.c-content { margin: 6px 0; }
.c-actions { display: flex; gap: 12px; font-size: 12.5px; }
.sub-comments { margin-top: 10px; padding-left: 14px; border-left: 1px solid var(--line); }
.sub-comments .comment { padding: 10px 0; }

.reply-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.reply-login { padding: 20px; text-align: center; color: var(--text-3); background: var(--card-2); border-radius: var(--radius-sm); }
.reply-target { background: var(--card-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 7px 12px; font-size: 13px; color: var(--text-2); margin-bottom: 10px; }

/* ── 表单 ───────────────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 13px; color: var(--text-2); font-weight: 500; }
/* 注意：要覆盖没有写 type 属性的 input（默认 text），否则会拿到浏览器默认的白底黑字 */
.field input:not([type="checkbox"]):not([type="radio"]):not([type="color"]):not([type="file"]):not([type="submit"]):not([type="button"]),
.field select, .field textarea, .captcha-row input {
  background: var(--card-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--text); padding: 9px 12px; font: inherit; font-size: 14px; outline: none; width: 100%;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.field input:focus, .field select:focus, .field textarea:focus, .captcha-row input:focus { border-color: var(--text-2); }
.field input:disabled { opacity: .6; }
.field input[type=color] { width: 60px; height: 36px; background: none; border: 1px solid var(--line); border-radius: 8px; }
.field input[type=file] { color: var(--text-2); font-size: 13px; }
.field textarea { resize: vertical; font-family: inherit; }
.field.checkbox, .checkbox { flex-direction: row; align-items: center; gap: 8px; }
.checkbox { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--text-2); margin: 6px 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; align-items: end; }
.form-stack { display: flex; flex-direction: column; }
.form-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 10px; }
.form-tip { font-size: 12.5px; color: var(--text-3); margin: 4px 0 0; }
.form-tip.warn { color: var(--text-2); }
.security-grid, .feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px 14px; margin: 8px 0 16px; }
input[type=checkbox], input[type=radio] { accent-color: var(--text); }

.alert { padding: 11px 14px; border-radius: var(--radius-sm); margin-bottom: 14px; font-size: 13.5px; background: var(--card-2); border: 1px solid var(--line); color: var(--text); border-left-width: 3px; border-left-color: var(--line); }
.alert-danger { border-left-color: var(--text); font-weight: 500; }
.alert-success { border-left-color: var(--text-2); }
.alert-info { background: transparent; border-style: dashed; border-left-style: solid; border-left-color: var(--text-3); color: var(--text-2); }

.banner { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 14px; border-radius: var(--radius-sm); margin: 12px 0; font-size: 13.5px; background: var(--card-2); border: 1px solid var(--line); border-left-width: 3px; color: var(--text-2); }
.banner-warn { border-left-color: var(--text-2); }
.banner-danger { border-left-color: var(--text); color: var(--text); }

.captcha-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.captcha-row input { width: 120px; }
.captcha-row img { height: 44px; border-radius: 8px; cursor: pointer; border: 1px solid var(--line); background: var(--card-2); }

/* ── 认证页 ─────────────────────────────────────────────────────────────── */
.auth-wrap { display: grid; place-items: center; padding: 40px 0; }
.auth-card { width: 100%; max-width: 430px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 30px; box-shadow: var(--shadow); }
.auth-card h1 { margin: 0 0 4px; font-size: 22px; }
.auth-foot { text-align: center; margin: 16px 0 0; font-size: 13px; color: var(--text-3); }

/* ── 安装向导 ───────────────────────────────────────────────────────────── */
.setup-wrap { max-width: 720px; margin: 0 auto; }
.steps { display: flex; align-items: center; gap: 0; margin-bottom: 26px; }
.step { display: flex; align-items: center; gap: 10px; color: var(--text-3); font-size: 13.5px; }
.step .num { width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-items: center; font-size: 12.5px; }
.step.active { color: var(--text); }
.step.active .num { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 700; }
.step.done .num { background: var(--soft-2); color: var(--text); border-color: var(--text-3); }
.step-line { flex: 1; height: 1px; background: var(--line); margin: 0 12px; min-width: 14px; }
.setup-card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px; box-shadow: var(--shadow); }
.setup-card h1 { margin: 0 0 6px; font-size: 21px; }
.setup-card > p.lead { color: var(--text-3); margin: 0 0 22px; font-size: 13.5px; }
.setup-foot { display: flex; gap: 10px; align-items: center; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.setup-foot .spacer { flex: 1; }
.diag { display: grid; grid-template-columns: 120px 1fr; gap: 8px 14px; font-size: 13.5px; margin: 0 0 18px; padding: 14px; background: var(--card-2); border-radius: var(--radius-sm); }
.diag dt { color: var(--text-3); }
.diag dd { margin: 0; word-break: break-all; }
.diag .ok { color: var(--text); font-weight: 600; }
.envbox { background: var(--code-bg); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; font-size: 12.5px; color: var(--code-fg); overflow-x: auto; white-space: pre; margin: 10px 0; }
.driver-pick { display: grid; gap: 10px; margin-bottom: 18px; }
.driver-opt { display: flex; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; align-items: flex-start; }
.driver-opt:hover { border-color: var(--line-2); }
.driver-opt input { margin-top: 4px; }
.driver-opt.sel { border-color: var(--text); background: var(--soft); }
.driver-opt.disabled { opacity: .5; cursor: not-allowed; }
.driver-opt b { display: block; }
.driver-opt small { color: var(--text-3); }

/* ── 个人主页 ───────────────────────────────────────────────────────────── */
.profile-head { display: flex; align-items: center; gap: 20px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 18px; flex-wrap: wrap; }
.ph-info h1 { margin: 0 0 6px; font-size: 22px; }
.ph-stats { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--text-3); margin-top: 8px; }
.ph-stats b { color: var(--text); }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.card-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.card-form h2 { margin: 0 0 14px; font-size: 16px; }

/* ── 徽章 / 分页 ────────────────────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; font-size: 11.5px; padding: 1px 8px; border-radius: 999px; background: transparent; color: var(--text-3); border: 1px solid var(--line); font-weight: 500; }
.badge-admin { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 700; }
.badge-mod { border-color: var(--text-3); color: var(--text-2); }
.badge-ok { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 600; }
.badge-warn { border-style: dashed; border-color: var(--text-2); color: var(--text-2); }
.badge-danger { border-color: var(--text); color: var(--text); font-weight: 700; }
.badge-info { background: var(--soft); border-color: transparent; color: var(--text-2); }
.badge-muted { opacity: .55; }

.pagination { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin: 22px 0; }
.page-item { padding: 6px 12px; border-radius: var(--radius-sm); background: var(--card); border: 1px solid var(--line); color: var(--text-2); font-size: 13px; }
.page-item:hover { border-color: var(--text-3); color: var(--text); text-decoration: none; }
.page-item.active { background: var(--primary); border-color: var(--primary); color: var(--primary-fg); font-weight: 700; }
.page-gap { padding: 6px; color: var(--text-3); }

.empty { text-align: center; padding: 50px 20px; color: var(--text-3); background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); }
.empty.small { padding: 26px; font-size: 13.5px; }
.empty-icon { font-size: 40px; margin-bottom: 8px; opacity: .5; }
.err-box { text-align: center; padding: 70px 20px; }
.err-code { font-size: 64px; font-weight: 800; color: var(--text); opacity: .25; letter-spacing: -.04em; }

/* ── 头像（灰阶） ───────────────────────────────────────────────────────── */
.avatar { border-radius: 50%; object-fit: cover; display: inline-grid; place-items: center; flex: none; }
.avatar-text { color: #fff; font-weight: 700; }
html[data-theme="light"] .avatar-text { color: #fff; }
.avatar-c0 { background: #1f1f1f; }
.avatar-c1 { background: #2b2b2b; }
.avatar-c2 { background: #383838; }
.avatar-c3 { background: #454545; }
.avatar-c4 { background: #525252; }
.avatar-c5 { background: #5f5f5f; }
.avatar-c6 { background: #6b6b6b; }

/* ── Toast ──────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 20px);
  background: var(--primary); color: var(--primary-fg); border: 1px solid var(--primary);
  padding: 10px 18px; border-radius: 999px; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transition: .25s; z-index: 200; font-size: 13.5px; font-weight: 500;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: transparent; color: var(--text); border-style: dashed; border-color: var(--text); }

/* ── 后台 ───────────────────────────────────────────────────────────────── */
.admin-layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 20px; align-items: start; }
.admin-side { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; position: sticky; top: 74px; }
.admin-brand { font-weight: 700; padding: 6px 10px 12px; font-size: 15px; }
.admin-side nav { display: flex; flex-direction: column; gap: 2px; }
.admin-side nav a { display: flex; align-items: center; gap: 9px; padding: 8px 10px; border-radius: var(--radius-sm); color: var(--text-2); font-size: 13.5px; }
.admin-side nav a:hover { background: var(--card-2); color: var(--text); text-decoration: none; }
.admin-side nav a.active { background: var(--primary); color: var(--primary-fg); font-weight: 600; }
.admin-side nav .mi { width: 18px; text-align: center; }
.admin-side nav .pill { margin-left: auto; background: var(--primary); color: var(--primary-fg); border-radius: 999px; font-size: 11px; padding: 0 7px; font-weight: 700; }
.admin-side nav .pill-warn { background: var(--card-2); color: var(--text); border: 1px solid var(--text-3); }
.admin-side nav a.active .pill { background: var(--primary-fg); color: var(--primary); }
.admin-back { display: block; margin-top: 12px; padding: 8px 10px; color: var(--text-3); font-size: 13px; }
.admin-main { min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.admin-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.admin-head h1 { margin: 0; font-size: 21px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.panel h2 { margin: 0 0 12px; font-size: 16px; }
.panel h3 { margin: 18px 0 8px; font-size: 14px; color: var(--text-2); }
.admin-cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--text-3); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; }
.kpi:hover { border-color: var(--line-2); border-left-color: var(--text-2); text-decoration: none; }
.kpi b { font-size: 24px; line-height: 1.2; }
.kpi span { font-size: 12.5px; color: var(--text-3); }
.kpi.warn { border-left-color: var(--text-2); }
.kpi.danger { border-left-color: var(--text); border-left-width: 4px; }
.kpi.info { border-left-style: dashed; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table th { color: var(--text-3); font-weight: 600; font-size: 12.5px; }
.table tr:hover td { background: var(--card-2); }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px; margin: 0; font-size: 13.5px; }
.kv dt { color: var(--text-3); }
.kv dd { margin: 0; }
.filter-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; }
.filter-bar input, .filter-bar select { background: var(--card-2); border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--text); padding: 7px 10px; font: inherit; font-size: 13px; }
.mod-list { display: flex; flex-direction: column; gap: 12px; }
.mod-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.mi-head { display: flex; gap: 12px; align-items: center; }
.mi-title { flex: 1; min-width: 0; }
.mi-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.mi-body { margin: 12px 0; }
.mi-body summary { cursor: pointer; color: var(--text-3); font-size: 13px; }
.mi-body summary:hover { color: var(--text-2); }
.preview { max-height: 260px; overflow: auto; background: var(--card-2); border-radius: var(--radius-sm); padding: 12px; margin-top: 10px; }
.ai-note { background: var(--card-2); border-radius: var(--radius-sm); padding: 10px 12px; font-size: 13px; color: var(--text-2); margin-top: 10px; display: flex; flex-direction: column; gap: 4px; }
.ai-note pre.code { background: var(--code-bg); color: var(--code-fg); padding: 10px; border-radius: 8px; overflow: auto; font-size: 12px; max-height: 240px; }
.mi-actions { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 12px; border-top: 1px solid var(--line); }
.bulk-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.user-cell { display: flex; align-items: center; gap: 10px; }
.code-big { background: var(--card-2); border: 1px solid var(--line); padding: 3px 10px; border-radius: 6px; font-size: 13px; letter-spacing: .04em; }
.create-user summary { cursor: pointer; font-weight: 600; margin-bottom: 12px; }
.rules li { margin-bottom: 8px; }
.inline-form select, .table .inline-form select { background: var(--card-2); border: 1px solid var(--line); color: var(--text); border-radius: 6px; padding: 3px 6px; font: inherit; font-size: 12.5px; }
code { background: var(--card-2); padding: 1px 5px; border-radius: 4px; font-size: .92em; }

/* ── 页脚 ───────────────────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--line); background: var(--bg-2); margin-top: 40px; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 26px 16px; display: flex; gap: 30px; flex-wrap: wrap; justify-content: space-between; font-size: 13px; color: var(--text-3); }
.footer-inner strong { color: var(--text); }
.footer-inner p { margin: 4px 0 0; }
.footer-links { display: flex; gap: 14px; }
.footer-links a { color: var(--text-3); }
.footer-links a:hover { color: var(--text); }
.footer-meta { display: flex; flex-direction: column; gap: 4px; text-align: right; }

/* ── 响应式 ─────────────────────────────────────────────────────────────── */
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; order: 2; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side { position: static; }
  .admin-side nav { flex-direction: row; flex-wrap: wrap; }
  .admin-cols { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; }
  .search { max-width: none; }
  .brand-name { display: none; }
  .field-row, .form-grid { grid-template-columns: 1fr; }
  .pc-stats { flex-direction: row; }
  .container { padding: 14px 12px 50px; }
  .post-detail { padding: 16px; }
  .pd-title { font-size: 19px; }
  .footer-meta { text-align: left; }
  .user-name { display: none; }
  .setup-card { padding: 20px; }
  .step span.lbl { display: none; }
}

/* ══════════════════════════════════════════════════════════════════════════
   图标（替代 emoji，灰度线性风格）
   ══════════════════════════════════════════════════════════════════════════ */
.icon { display: inline-block; vertical-align: -0.16em; flex: none; }
.cat-icon .icon, .cc-icon .icon, .ph-icon .icon { vertical-align: middle; }
.empty-icon .icon { color: var(--muted); }
button .icon, .pd-stats .icon, .like-btn .icon { pointer-events: none; }
.admin-side .mi { display: inline-flex; align-items: center; }
.admin-back { display: inline-flex; align-items: center; gap: 5px; }

/* ══════════════════════════════════════════════════════════════════════════
   站内消息中心
   ══════════════════════════════════════════════════════════════════════════ */
.msg-layout {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 20px;
  align-items: start;
}
.msg-side {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: 74px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: var(--card);
}
.msg-side-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 11px;
  border-radius: 7px;
  font-size: 14px;
  color: var(--fg);
  text-decoration: none;
}
.msg-side-item:hover { background: var(--hover); }
.msg-side-item.active { background: var(--accent-weak); color: var(--accent); font-weight: 600; }

.msg-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 19px;
  height: 19px;
  padding: 0 5px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
}
.dropdown .msg-count { margin-left: 6px; vertical-align: middle; }

.msg-main { min-width: 0; }
.msg-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.msg-list {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--card);
}
.msg-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 15px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
}
.msg-row:last-child { border-bottom: 0; }
.msg-row:hover { background: var(--hover); }
.msg-row.unread { background: var(--accent-weak); }
.msg-row-main { min-width: 0; flex: 1; }
.msg-row-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.msg-row-from { font-weight: 600; font-size: 13.5px; }
.msg-row-time { margin-left: auto; font-size: 12px; color: var(--muted); }
.msg-row-subject {
  margin-top: 4px;
  font-size: 14.5px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.msg-row-preview {
  margin-top: 2px;
  font-size: 13px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.msg-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 7px;
  flex: none;
}

.badge-msg-pm      { background: #eef2ff; color: #4457c8; }
.badge-msg-notice  { background: #fff4e5; color: #b26a00; }
.badge-msg-system  { background: #eef7ee; color: #2f7d32; }
[data-theme="dark"] .badge-msg-pm     { background: #232a45; color: #a9b6ff; }
[data-theme="dark"] .badge-msg-notice { background: #3b2e17; color: #ffc46b; }
[data-theme="dark"] .badge-msg-system { background: #1e3320; color: #8fd694; }

.msg-detail {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  padding: 22px;
}
.msg-detail-head { border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 16px; }
.msg-detail-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13px; }
.msg-detail-from { font-weight: 600; }
.msg-detail-time { color: var(--muted); margin-left: auto; }
.msg-detail-subject { margin: 10px 0 0; font-size: 19px; line-height: 1.4; }
.msg-detail-body { font-size: 15px; line-height: 1.75; word-break: break-word; }
.msg-detail-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }

.thread-head {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 10px 10px 0 0;
  background: var(--card);
  border-bottom: 0;
}
.thread-peer { font-weight: 600; text-decoration: none; color: inherit; }
.thread-sub { font-size: 12px; color: var(--muted); }
.thread-body {
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--card);
  padding: 18px;
  max-height: 60vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.bubble-row { display: flex; }
.bubble-row.mine { justify-content: flex-end; }
.bubble {
  max-width: 72%;
  padding: 9px 13px;
  border-radius: 12px;
  background: var(--hover);
  font-size: 14.5px;
  line-height: 1.6;
  word-break: break-word;
}
.bubble-row.mine .bubble { background: var(--accent-weak); }
.bubble-time { margin-top: 4px; font-size: 11.5px; color: var(--muted); }
.thread-form {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 10px 10px;
  background: var(--card);
  padding: 14px;
}
.thread-form textarea { flex: 1; resize: vertical; }

@media (max-width: 720px) {
  .msg-layout { grid-template-columns: 1fr; }
  .msg-side { position: static; flex-direction: row; overflow-x: auto; }
  .bubble { max-width: 88%; }
  .thread-form { flex-direction: column; align-items: stretch; }
}