/* ═══════════════════════════════════════
   刷机教程 — 全局样式
   侧边栏布局 + 浅绿色主题
   ═══════════════════════════════════════ */

/* ── 侧边栏布局 ── */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 230px; min-width: 230px;
  background: #101b18;
  color: #c9d7d1;
  display: flex; flex-direction: column;
  padding: 0;
  position: sticky; top: 0; height: 100vh;
  overflow-y: auto;
  z-index: 10;
  box-shadow: 2px 0 18px rgba(8,17,14,0.18);
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 20px 16px;
  font-size: 16px; font-weight: 700;
  color: #f6fbf8;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  background: #0d1714;
}
.sidebar-logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, #17c964, #36d399); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
  transition: background 0.2s;
}
.sidebar-user:hover { background: rgba(255,255,255,0.055); }
.sidebar-avatar {
  width: 36px; height: 36px;
  background: #123f2d; color: #6ee7a4;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
  flex-shrink: 0;
}
.sidebar-username {
  font-size: 13px; font-weight: 600; color: #e2ede7;
  line-height: 1.3;
}
.sidebar-role { font-size: 11px; color: #94a9a0; }
.sidebar-nav { flex: 1; padding: 8px 0; }
.sidebar-footer { padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); background: #0d1714; }
.nav-section {
  padding: 14px 20px 6px;
  color: #71877e;
  font-size: 11px;
  font-weight: 700;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px; margin: 2px 8px;
  font-size: 13px; font-weight: 500;
  border-radius: 8px; cursor: pointer;
  transition: all 0.2s;
  color: #9fb0aa;
}
.nav-item:hover { background: rgba(255,255,255,0.07); color: #f4faf7; }
.nav-item.active {
  background: #143827; color: #7bf0aa;
  font-weight: 600;
  box-shadow: inset 3px 0 0 #22c55e;
}
.nav-item .nav-icon { font-size: 16px; width: 22px; text-align: center; flex-shrink: 0; }

/* ── 主内容区 ── */
.main {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
  background: var(--bg);
}
.main-topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.main-page-title {
  font-size: 18px; font-weight: 700; color: var(--text);
}
.main-topbar-right { display: flex; align-items: center; gap: 12px; }
.rate-badge {
  font-size: 12px; color: var(--primary-dark);
  background: var(--primary-bg);
  padding: 4px 12px; border-radius: 999px;
  font-weight: 500;
}
.main-content {
  flex: 1; padding: 20px 28px 40px;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
}
.admin-wide .main-content { max-width: 1320px; }

/* ── 弹窗卡片（统一） ── */
.modal-card {
  background: white; border-radius: 18px;
  max-width: 460px; width: 92vw;
  padding: 28px; position: relative;
  max-height: 90vh; overflow-y: auto;
  box-shadow: 0 16px 48px rgba(20,34,26,0.25);
}
.modal-close {
  position: absolute; top: 12px; right: 16px;
  background: none; border: none; font-size: 22px;
  cursor: pointer; color: var(--text3);
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; transition: all 0.2s;
}
.modal-close:hover { background: #fee2e2; color: var(--danger); }

/* ── 侧边栏表单元素适配 ── */
.modal-card input,
.modal-card select,
.modal-card textarea {
  padding: 10px 14px; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size: 14px;
  color: var(--text); background: white;
  font-family: inherit; box-sizing: border-box;
}
.modal-card input:focus,
.modal-card select:focus,
.modal-card textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(25,196,99,0.12);
}
.modal-card .form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px;
}
.modal-card .form-group {
  display: flex; flex-direction: column; gap: 4px;
}
.modal-card .form-group label {
  font-size: 12px; font-weight: 500; color: var(--text2);
}
.modal-card .form-group label .req { color: var(--danger); }

:root {
  --primary: #19c463;
  --primary-dark: #0faa4f;
  --primary-light: #e8faf0;
  --primary-bg: rgba(25,196,99,0.08);
  --success: #19c463;
  --danger: #e54545;
  --warning: #f0a020;
  --bg: #f4f9f6;
  --card: #ffffff;
  --border: #e2ede7;
  --text: #14221a;
  --text2: #46574e;
  --text3: #8da39a;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 2px 12px rgba(20,34,26,0.06);
  --shadow-lg: 0 8px 30px rgba(20,34,26,0.10);
  --glass: rgba(255,255,255,0.72);
  --glass-border: rgba(25,196,99,0.15);
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(135deg, #e8faf0 0%, #f4f9f6 40%, #fff 100%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── 顶部导航 ── */
.app-nav {
  position: sticky; top: 12px; z-index: 100;
  margin: 12px 16px 0;
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
}
.app-nav .brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 16px; font-weight: 700; color: var(--primary-dark);
}
.app-nav .brand .logo {
  width: 32px; height: 32px;
  background: var(--primary); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 16px;
}
.app-nav .nav-tabs {
  display: flex; gap: 4px;
  background: var(--primary-bg); border-radius: 999px; padding: 3px;
}
.app-nav .nav-tab {
  padding: 7px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 500; cursor: pointer;
  transition: all 0.25s; color: var(--text2);
  border: none; background: transparent;
}
.app-nav .nav-tab:hover { color: var(--primary-dark); }
.app-nav .nav-tab.active {
  background: var(--primary); color: white;
  box-shadow: 0 2px 8px rgba(25,196,99,0.3);
}
.app-nav .user-info {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--text2);
}
.app-nav .user-info .username { font-weight: 600; color: var(--text); }
.app-nav .logout-btn {
  padding: 5px 14px; border: 1px solid var(--border); border-radius: 999px;
  background: white; font-size: 12px; cursor: pointer; color: var(--text2);
  transition: all 0.2s;
}
.app-nav .logout-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ── 容器 ── */
.container { max-width: 1080px; margin: 20px auto; padding: 0 16px 40px; }

/* ── 卡片 ── */
.card {
  background: var(--card); border-radius: var(--radius);
  border: 1px solid var(--border); padding: 24px; margin-bottom: 16px;
  box-shadow: var(--shadow); transition: box-shadow 0.25s;
}
.card:hover { box-shadow: var(--shadow-lg); }
.card-title {
  font-size: 15px; font-weight: 600; margin-bottom: 16px;
  padding-bottom: 12px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px; color: var(--text);
}
.card-title .icon {
  width: 28px; height: 28px;
  background: var(--primary-bg); border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
}

/* ── 表单 ── */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-row.full { grid-template-columns: 1fr; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 13px; font-weight: 500; color: var(--text2); }
.form-group label .req { color: var(--danger); margin-left: 2px; }
.form-group input, .form-group select, .form-group textarea {
  padding: 9px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; color: var(--text); background: white; transition: all 0.2s; font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(25,196,99,0.12);
}
.form-group textarea { resize: vertical; min-height: 72px; }
.field-hint { color: var(--text3); font-size: 12px; line-height: 1.5; padding-top: 8px; }

/* ── 级联选择 ── */
.cascade-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cascade-wrap select { width: 100%; }
.cpu-model-select { max-height: 38px; }
.cpu-model-select option { padding: 4px; }
#cpu-custom-wrap input,
#device-custom-brand-wrap input,
#device-custom-model-wrap input,
#storage-custom-wrap input {
  padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius-xs);
  font-size: 14px; background: white; transition: border-color 0.2s;
}
#cpu-custom-wrap input:focus,
#device-custom-brand-wrap input:focus,
#device-custom-model-wrap input:focus,
#storage-custom-wrap input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }

.kb-meta { display: flex; flex-wrap: wrap; gap: 2px 12px; align-items: center; }

/* ── 图片上传 ── */
.image-upload-area {
  border: 2px dashed var(--border); border-radius: var(--radius-sm);
  padding: 16px; text-align: center; cursor: pointer; transition: all 0.25s;
  min-height: 80px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px;
}
.image-upload-area:hover { border-color: var(--primary); background: var(--primary-bg); }
.image-upload-area .upload-icon { font-size: 24px; opacity: 0.5; }
.image-upload-area .hint { color: var(--text3); font-size: 12px; }
.image-grid { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.image-thumb {
  position: relative; width: 96px; height: 96px;
  border-radius: var(--radius-sm); overflow: hidden;
  border: 1px solid var(--border); cursor: pointer; transition: transform 0.2s;
}
.image-thumb:hover { transform: scale(1.04); }
.image-thumb img { width: 100%; height: 100%; object-fit: cover; }
.image-thumb .rm-btn {
  position: absolute; top: 3px; right: 3px;
  width: 20px; height: 20px;
  background: rgba(229,69,69,0.88); color: white;
  border: none; border-radius: 50%; font-size: 11px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 0.2s;
}
.image-thumb:hover .rm-btn { opacity: 1; }

/* ── 刷机步骤 ── */
.step-list { display: flex; flex-direction: column; gap: 12px; }
.step-item {
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; background: #fcfffe;
}
.step-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.step-num {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--primary); color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; flex-shrink: 0;
}
.step-title-input {
  flex: 1; padding: 6px 10px;
  border: 1.5px solid var(--border); border-radius: var(--radius-xs);
  font-size: 14px; font-family: inherit;
}
.step-title-input:focus { outline: none; border-color: var(--primary); }
.step-desc {
  width: 100%; padding: 8px 10px;
  border: 1.5px solid var(--border); border-radius: var(--radius-xs);
  font-size: 13px; font-family: inherit; resize: vertical;
  min-height: 52px; margin-bottom: 10px;
}
.step-desc:focus { outline: none; border-color: var(--primary); }
.rm-step {
  width: 26px; height: 26px;
  border: 1.5px solid var(--border); background: white;
  border-radius: 50%; cursor: pointer; color: var(--danger);
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.rm-step:hover { background: var(--danger); color: white; border-color: var(--danger); }

/* ── 按钮 ── */
.btn {
  padding: 10px 24px; border: none; border-radius: 999px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all 0.25s; display: inline-flex; align-items: center; gap: 6px;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white; box-shadow: 0 3px 12px rgba(25,196,99,0.3);
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(25,196,99,0.4); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-outline { background: white; color: var(--primary-dark); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-bg); }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-ghost { background: white; color: var(--text2); border: 1px solid var(--border); }
.btn-p { background: var(--primary); color: white; border-radius: 999px; }
.btn-p:hover { background: var(--primary-dark); }
.btn-o { background: white; color: var(--text2); border: 1px solid var(--border); border-radius: 999px; }
.btn-o:hover { border-color: var(--primary); color: var(--primary-dark); }
.btn-sm { padding: 6px 16px; font-size: 13px; }
.form-actions {
  display: flex; gap: 12px; justify-content: flex-end;
  padding-top: 20px; border-top: 1px solid var(--border); margin-top: 8px;
}

/* ── 知识库列表 ── */
.kb-search { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.kb-search input {
  flex: 1; min-width: 200px; padding: 10px 16px;
  border: 1.5px solid var(--border); border-radius: 999px;
  font-size: 14px; background: white;
}
.kb-search input:focus { outline: none; border-color: var(--primary); }
.kb-search select {
  padding: 10px 14px;
  border: 1.5px solid var(--border); border-radius: 999px;
  font-size: 14px; background: white; cursor: pointer;
  color: var(--text1);
}
.kb-search select:focus { outline: none; border-color: var(--primary); }
.kb-list { display: flex; flex-direction: column; gap: 12px; }
.kb-item {
  background: white; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; cursor: pointer; transition: all 0.25s;
  display: flex; align-items: center; gap: 16px;
}
.kb-item:hover { box-shadow: var(--shadow-lg); border-color: var(--primary); transform: translateY(-1px); }
.kb-item .kb-icon {
  width: 48px; height: 48px;
  background: var(--primary-bg); border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}
.kb-item .kb-info { flex: 1; }
.kb-item .kb-title { font-weight: 600; font-size: 15px; }
.kb-item .kb-meta { font-size: 12px; color: var(--text3); margin-top: 3px; }
.kb-item .kb-badge {
  padding: 4px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 600;
  background: var(--primary-bg); color: var(--primary-dark);
}
.empty-state { text-align: center; padding: 60px 20px; color: var(--text3); }
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.4; }
.empty-state.compact { padding: 20px 12px; font-size: 13px; }

/* ── 短接点图库 ── */
.shortpin-panel { display: flex; flex-direction: column; gap: 14px; }
.shortpin-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.shortpin-search { display: flex; gap: 10px; flex-wrap: wrap; flex: 1; min-width: 0; }
.shortpin-search input {
  flex: 1; min-width: 220px; padding: 10px 16px;
  border: 1.5px solid var(--border); border-radius: 999px;
  font-size: 14px; background: white;
}
.shortpin-search input:focus { outline: none; border-color: var(--primary); }
.shortpin-grid { display: flex; flex-direction: column; gap: 16px; }
.recommend-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 12px;
}
.recommend-list { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
.shortpin-group {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: white;
  padding: 0;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.shortpin-group-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px 12px;
  border-bottom: 1px solid rgba(226, 237, 231, 0.85);
  background: linear-gradient(180deg, rgba(25,196,99,0.04), rgba(255,255,255,0));
}
.shortpin-group-main {
  min-width: 0;
  padding-right: 8px;
}
.shortpin-group-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.22;
  letter-spacing: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  overflow-wrap: anywhere;
}
.shortpin-group-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 7px;
}
.shortpin-group-meta span,
.shortpin-group-count {
  font-size: 12px;
  color: var(--text3);
  background: white;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 9px;
}
.shortpin-group-count {
  flex: 0 0 auto;
  color: var(--primary-dark);
  background: var(--primary-bg);
  border-color: rgba(44, 168, 106, 0.2);
  margin-top: 2px;
}
.shortpin-group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  padding: 12px 16px 16px;
}
.shortpin-group-thumb {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: #fbfdfc;
  box-shadow: none;
  cursor: zoom-in;
  font: inherit;
  text-align: left;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.shortpin-group-thumb:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}
.shortpin-group-thumb:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.shortpin-group-thumb img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  display: block;
  background: #eef6f2;
}
.shortpin-group-thumb-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  max-width: calc(100% - 12px);
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(20,34,26,0.78);
  color: white;
  font-size: 10px;
  line-height: 1.4;
}
.shortpin-group-thumb-label {
  min-height: 36px;
  padding: 6px 8px 8px;
  color: var(--text2);
  font-size: 12px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.recommend-empty {
  min-height: 74px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: #fcfffe;
  color: var(--text3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  padding: 10px;
}
.shortpin-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.shortpin-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #eef6f2;
  cursor: zoom-in;
}
.shortpin-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.shortpin-body { padding: 10px 12px 12px; }
.shortpin-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: anywhere;
}
.shortpin-meta {
  font-size: 12px;
  color: var(--text3);
  margin-top: 2px;
  min-height: 18px;
}
.shortpin-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.shortpin-tags span {
  font-size: 11px;
  color: #0d6b30;
  background: #dcf5e8;
  border-radius: 999px;
  padding: 2px 8px;
}
.shortpin-tags span:first-child {
  color: var(--primary-dark);
  background: var(--primary-bg);
}
.shortpin-note {
  font-size: 12px;
  color: var(--text2);
  margin-top: 8px;
  line-height: 1.5;
}
.shortpin-actions { margin-top: 10px; display: flex; justify-content: flex-end; }

/* ── 管理员工作台 ── */
.admin-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 14px;
}
.admin-page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.admin-page-head h3 {
  margin: 0;
  font-size: 18px;
  color: var(--text);
}
.admin-page-head p {
  margin: 4px 0 0;
  color: var(--text3);
  font-size: 13px;
}
.admin-toolbar input,
.admin-toolbar select {
  min-width: 180px;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: white;
  font: inherit;
  font-size: 13px;
}
.admin-batch-toolbar {
  padding: 10px 12px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.admin-batch-toolbar span {
  min-width: 76px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 700;
}
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.admin-stat {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  box-shadow: var(--shadow);
}
.admin-stat-value {
  color: var(--primary-dark);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
}
.admin-stat-label {
  color: var(--text3);
  font-size: 12px;
  margin-top: 4px;
}
.admin-table-wrap {
  overflow-x: auto;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.admin-table th,
.admin-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
.admin-table th {
  color: var(--text2);
  background: #f8fcfa;
  font-weight: 700;
  white-space: nowrap;
}
.admin-table td:last-child {
  white-space: nowrap;
}
.admin-row-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: flex-start;
}
.admin-row-actions .btn {
  min-width: 54px;
}
.admin-table img {
  width: 76px;
  height: 56px;
  object-fit: contain;
  border-radius: 8px;
  background: #eef6f2;
  border: 1px solid var(--border);
  cursor: zoom-in;
}
.admin-table img.img-missing {
  opacity: .45;
  filter: grayscale(1);
}
.shortpin-admin-table td {
  height: 72px;
}
.shortpin-admin-table td:nth-child(3) {
  min-width: 92px;
}
.shortpin-admin-table td:nth-child(5) {
  min-width: 150px;
}
.admin-source-cell {
  max-width: 340px;
  white-space: normal;
  color: var(--text2);
  font-size: 12px;
  line-height: 1.45;
}
.user-admin-table td:last-child {
  width: 250px;
}
.user-admin-table th:first-child,
.user-admin-table td:first-child {
  width: 42px;
  text-align: center;
}
.user-admin-table input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}
.modal-card.admin-modal-wide {
  max-width: 900px;
  width: min(900px, 94vw);
}
.admin-modal-head {
  margin-bottom: 18px;
}
.admin-modal-head h3,
.admin-detail-head h3 {
  margin: 2px 0 0;
  font-size: 20px;
  color: var(--text);
}
.admin-kicker {
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .02em;
}
.admin-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}
.admin-modal-actions .btn {
  min-width: 92px;
  justify-content: center;
}
.admin-detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  padding-right: 28px;
}
.admin-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.admin-detail-item {
  border: 1px solid var(--border);
  background: #f8fcfa;
  border-radius: 8px;
  padding: 10px 12px;
}
.admin-detail-item span {
  display: block;
  color: var(--text3);
  font-size: 12px;
  margin-bottom: 4px;
}
.admin-detail-item strong {
  color: var(--text);
  font-size: 13px;
  word-break: break-word;
}
.admin-detail-section {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 14px;
}
.admin-detail-section.compact {
  border-top: 0;
  padding-top: 8px;
  margin-top: 8px;
}
.admin-detail-section h4 {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--text);
}
.admin-detail-text {
  color: var(--text2);
  font-size: 13px;
  line-height: 1.65;
  word-break: break-word;
}
.admin-detail-images {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.admin-detail-images button {
  width: 92px;
  height: 72px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f8fcfa;
  padding: 0;
  overflow: hidden;
  cursor: zoom-in;
}
.admin-detail-images img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.admin-step {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  background: #fff;
}
.admin-step p {
  margin: 6px 0 0;
  color: var(--text2);
  font-size: 13px;
  line-height: 1.55;
}
.admin-shortpin-edit {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 18px;
}
.admin-shortpin-preview {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f8fcfa;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.admin-shortpin-preview img {
  width: 100%;
  height: 100%;
  max-height: 320px;
  object-fit: contain;
}
.admin-edit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.admin-edit-grid .form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.admin-edit-grid .admin-edit-span {
  grid-column: 1 / -1;
}
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-success { color: #0d6b30; background: #dcf5e8; }
.badge-warning { color: #8a5b00; background: #fff2c7; }
.badge-danger { color: #9d1c1c; background: #fee2e2; }
.badge-info { color: #1e40af; background: #dbeafe; }
.admin-empty {
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text3);
  background: white;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}

/* ── 登录/注册 ── */
.auth-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #d4f5e0 0%, #e8faf0 30%, #f4f9f6 60%, #fff 100%);
}
.auth-card {
  background: var(--glass); backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border); border-radius: 24px;
  padding: 40px; width: 400px; box-shadow: var(--shadow-lg); text-align: center;
}
.auth-card .auth-logo {
  width: 56px; height: 56px;
  background: var(--primary); border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: white; margin: 0 auto 16px;
}
.auth-card h2 { font-size: 22px; margin-bottom: 4px; }
.auth-card .auth-sub { color: var(--text3); font-size: 14px; margin-bottom: 28px; }
.auth-card input {
  width: 100%; padding: 11px 16px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; margin-bottom: 14px; background: white; transition: border-color 0.2s;
}
.auth-card input:focus { outline: none; border-color: var(--primary); }
.auth-card .auth-btn {
  width: 100%; padding: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white; border: none; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer; margin-top: 4px;
  transition: all 0.25s; box-shadow: 0 3px 12px rgba(25,196,99,0.3);
}
.auth-card .auth-btn:hover { box-shadow: 0 4px 16px rgba(25,196,99,0.45); }
.auth-card .auth-btn:disabled { opacity: 0.5; }
.auth-card .auth-switch { margin-top: 18px; font-size: 13px; color: var(--text3); }
.auth-card .auth-switch a { color: var(--primary-dark); font-weight: 600; cursor: pointer; text-decoration: none; }
.auth-card .auth-switch a:hover { text-decoration: underline; }
.auth-card .error-msg { color: var(--danger); font-size: 13px; margin-bottom: 10px; min-height: 18px; }
.auth-card .invite-hint { font-size: 12px; color: var(--text3); margin-bottom: 14px; }

/* ── 图片弹窗 ── */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(20,34,26,0.82);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; cursor: pointer;
}
.modal-overlay img {
  max-width: 90vw; max-height: 90vh;
  border-radius: 12px; box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

#image-modal {
  z-index: 3000;
}

/* ── 知识库详情面板（查看器.html 风格） ── */
.detail-overlay {
  align-items: flex-start;
  padding: 40px 16px;
  overflow-y: auto;
}
.detail-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 92%;
  max-width: 820px;
  margin: auto;
  box-shadow: var(--shadow-lg);
  cursor: default;
}
.detail-header {
  background: linear-gradient(135deg, var(--primary-bg), #fff);
  padding: 18px 24px;
  border-radius: var(--radius) var(--radius) 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.detail-header h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
}
.detail-close {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: white;
  color: var(--text3);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.detail-close:hover {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}
.detail-body {
  padding: 20px 24px 28px;
  max-height: 70vh;
  overflow-y: auto;
}
.tutorial-hero {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: stretch;
  padding: 18px;
  margin-bottom: 14px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary-bg), #fff);
}
.tutorial-hero-main { min-width: 0; }
.tutorial-eyebrow {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 4px;
}
.tutorial-hero h3 {
  font-size: 22px;
  line-height: 1.25;
  margin-bottom: 6px;
  color: var(--text);
}
.tutorial-subtitle {
  font-size: 13px;
  color: var(--text2);
  word-break: break-word;
}
.tutorial-status {
  min-width: 104px;
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--border);
  text-align: right;
  align-self: center;
}
.tutorial-status span {
  display: block;
  font-size: 11px;
  color: var(--text3);
}
.tutorial-status strong {
  display: block;
  font-size: 13px;
  color: var(--primary-dark);
}
.tutorial-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 16px;
}
.tutorial-tags span {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  font-size: 12px;
}
.tutorial-spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.tutorial-spec {
  padding: 11px 12px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.tutorial-spec span {
  display: block;
  color: var(--text3);
  font-size: 12px;
  margin-bottom: 3px;
}
.tutorial-spec strong {
  display: block;
  color: var(--text);
  font-size: 14px;
  word-break: break-word;
}
.firmware-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  background: var(--primary-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-size: 13px;
}
.firmware-label {
  color: var(--text3);
  font-size: 12px;
  margin-bottom: 4px;
}
.firmware-card a {
  color: var(--primary-dark);
  font-weight: 600;
  word-break: break-all;
}
.firmware-code {
  min-width: 88px;
  padding: 8px 10px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--border);
  text-align: center;
}
.firmware-code span {
  display: block;
  color: var(--text3);
  font-size: 11px;
}
.firmware-code strong {
  color: var(--text);
  font-size: 15px;
}
.tutorial-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.tutorial-gallery-small {
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
}
.tutorial-step-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.detail-section {
  margin-bottom: 22px;
}
.detail-section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--primary-bg);
  display: flex;
  align-items: center;
  gap: 8px;
}
.detail-kv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 24px;
}
.detail-kv-item {
  display: flex;
  padding: 5px 0;
  font-size: 13px;
}
.detail-kv-key {
  color: var(--text3);
  min-width: 80px;
  flex-shrink: 0;
}
.detail-kv-val {
  color: var(--text);
  font-weight: 500;
}
.detail-img-zone {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.detail-img-wrap {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
}
.detail-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.detail-img-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(20,34,26,0.6);
  color: #fff;
  font-size: 11px;
  padding: 4px 8px;
  text-align: center;
}
.detail-step {
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fcfffe;
}
.detail-step-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}
.detail-step-title span {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}
.detail-step-desc {
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 10px;
  line-height: 1.6;
}
.detail-notes {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.7;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  border-left: 3px solid var(--primary);
}
.detail-foot {
  text-align: center;
  color: var(--text3);
  font-size: 11px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
@media (max-width: 640px) {
  .detail-overlay { padding: 20px 10px; }
  .detail-panel { width: 96%; }
  .detail-header { padding: 14px 16px; }
  .detail-header h2 { font-size: 16px; }
  .detail-body { padding: 14px 16px 20px; max-height: 75vh; }
  .detail-kv-grid { grid-template-columns: 1fr; }
  .detail-img-zone { grid-template-columns: 1fr 1fr; }
  .tutorial-hero { flex-direction: column; }
  .tutorial-status { text-align: left; align-self: stretch; }
  .tutorial-spec-grid { grid-template-columns: 1fr; }
  .firmware-card { grid-template-columns: 1fr; }
  .tutorial-gallery { grid-template-columns: 1fr 1fr; }
  .cascade-wrap { grid-template-columns: 1fr; }
  .shortpin-group-head {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
    padding: 12px 12px 10px;
  }
  .shortpin-group-main { padding-right: 0; }
  .shortpin-group-title { font-size: 18px; }
  .shortpin-group-count { align-self: flex-start; margin-top: 0; }
  .shortpin-group-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 10px 12px 12px;
  }
  .shortpin-body { padding: 9px; }
  .shortpin-actions .btn { width: 100%; }
}

/* ── Toast ── */
.toast {
  position: fixed; top: 24px; left: 50%; transform: translateX(-50%);
  padding: 10px 24px; border-radius: 999px; color: white;
  font-size: 14px; font-weight: 500; z-index: 2000;
  animation: toastIn 0.35s ease; box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.toast.success { background: var(--primary); }
.toast.error { background: var(--danger); }
.toast.info { background: #3b82f6; }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, -12px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ── 分页 ── */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 20px; align-items: center; }
.pagination button {
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px;
  background: white; cursor: pointer; font-size: 13px; transition: all 0.2s;
}
.pagination button:hover { border-color: var(--primary); color: var(--primary-dark); }
.pagination button.active { background: var(--primary); color: white; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.35; cursor: not-allowed; }
.pagination .page-info { font-size: 13px; color: var(--text3); padding: 0 8px; }

/* ── 侧边栏移动端适配 ── */
@media (max-width: 768px) {
  .sidebar { width: 58px; min-width: 58px; }
  .sidebar-logo { padding: 12px 8px; justify-content: center; }
  .sidebar-logo div:last-child { display: none; }
  .sidebar-logo-icon { width: 32px; height: 32px; font-size: 14px; }
  .sidebar-user { padding: 8px; justify-content: center; }
  .sidebar-user div:last-child { display: none; }
  .sidebar-avatar { width: 30px; height: 30px; font-size: 13px; }
  .nav-item { padding: 10px 8px; margin: 2px 4px; justify-content: center; border-radius: 6px; }
  .nav-item span:last-child { display: none; }
  .nav-item .nav-icon { font-size: 17px; width: auto; }
  .main-topbar { padding: 10px 14px; }
  .main-content { padding: 12px 12px 28px; }
  .main-page-title { font-size: 15px; }
  .kb-search { flex-direction: column; }
  .kb-search input { min-width: auto; }
  .modal-card { max-width: 96vw; padding: 20px; }
  .modal-card .form-row { grid-template-columns: 1fr; }
  .modal-card.admin-modal-wide { width: 96vw; }
  .admin-page-head { align-items: stretch; flex-direction: column; }
  .admin-detail-grid { grid-template-columns: 1fr 1fr; }
  .admin-shortpin-edit { grid-template-columns: 1fr; }
  .admin-edit-grid { grid-template-columns: 1fr; }
  .admin-row-actions { flex-wrap: wrap; }
  .shortpin-header { flex-direction: column; align-items: stretch; }
}

/* ── 响应式 ── */
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .card { padding: 18px; border-radius: 14px; }
  .auth-card { width: 100%; max-width: 360px; padding: 28px 20px; }
  .profile-grid { grid-template-columns: 1fr; }
  .profile-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ── 个人中心 ── */
.profile-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
}
.profile-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; background: var(--bg); border-radius: 10px;
}
.profile-label { font-size: 13px; color: var(--text3); }
.profile-value { font-size: 14px; font-weight: 500; color: var(--text); }
.profile-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.pstat {
  text-align: center; padding: 20px 10px; background: var(--bg);
  border-radius: 12px;
}
.pstat-val { font-size: 28px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.pstat-lbl { font-size: 12px; color: var(--text3); }

/* ── 记录操作按钮 ── */
.kb-actions {
  display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap;
}
.kb-actions .btn-sm { padding: 4px 12px; font-size: 12px; }

/* ── 预览弹窗 ── */
.preview-panel {
  max-width: 720px !important; width: 90vw; max-height: 85vh;
  overflow-y: auto; padding: 28px;
}