/* ================================================================
   多平台AI客服系统 · 高端深空科技皮肤
   兼容全部现有 class/ID，仅增强视觉
   ================================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #4f7cff;
  --primary-2: #8b5cf6;
  --primary-dark: #3b5bdb;
  --gold: #f5a623;
  --bg: #f2f4fa;
  --panel: #ffffff;
  --border: #e6e9f2;
  --text: #16213a;
  --text-sub: #6b7590;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(20, 35, 80, .06), 0 1px 3px rgba(20, 35, 80, .04);
  --shadow-lg: 0 12px 40px rgba(20, 35, 80, .12);
  --grad: linear-gradient(135deg, #4f7cff 0%, #8b5cf6 100%);
  --grad-gold: linear-gradient(135deg, #f5a623 0%, #f7c948 100%);
}
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", "Helvetica Neue", sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px;
  background-image: radial-gradient(circle at 15% 0%, rgba(79,124,255,.06) 0%, transparent 40%),
                    radial-gradient(circle at 85% 100%, rgba(139,92,246,.05) 0%, transparent 40%);
  background-attachment: fixed;
}
a { color: var(--primary); text-decoration: none; }
::selection { background: rgba(79,124,255,.2); }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #c7cede; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #a9b2c8; }
::-webkit-scrollbar-track { background: transparent; }

/* ===== 页面标题 ===== */
h2 { font-size: 21px; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; letter-spacing: .3px; }
h2::before { content: ''; width: 4px; height: 20px; border-radius: 99px; background: var(--grad); box-shadow: 0 0 12px rgba(79,124,255,.5); }
h3 { font-size: 15px; margin-bottom: 12px; color: var(--text); display: flex; align-items: center; gap: 8px; }
h3::before { content: ''; width: 3px; height: 14px; border-radius: 99px; background: linear-gradient(180deg, var(--primary), var(--primary-2)); }

/* ===== 登录页 ===== */
.login-body {
  display: flex; align-items: center; justify-content: center; min-height: 100vh;
  background: radial-gradient(1200px 800px at 20% 10%, #1b2a5e 0%, transparent 55%),
              radial-gradient(1000px 700px at 85% 85%, #3b1d6e 0%, transparent 55%),
              linear-gradient(160deg, #070c1d 0%, #0d1735 55%, #131a3a 100%);
  position: relative; overflow: hidden;
}
.login-glow { position: absolute; width: 480px; height: 480px; border-radius: 50%; background: radial-gradient(circle, rgba(79,124,255,.25), transparent 65%); filter: blur(30px); top: -120px; right: -80px; }
.login-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 22px; padding: 44px 40px 34px; width: 420px;
  box-shadow: 0 30px 80px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.12);
  text-align: center; position: relative; z-index: 2;
}
.login-brand { display: flex; align-items: center; gap: 16px; margin-bottom: 6px; text-align: left; }
.login-logo {
  width: 62px; height: 62px; border-radius: 18px; font-size: 30px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(79,124,255,.35), rgba(139,92,246,.35));
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: 0 8px 24px rgba(79,124,255,.35), inset 0 1px 0 rgba(255,255,255,.25);
}
.login-brand-text h1 { font-size: 22px; color: #fff; letter-spacing: .5px; }
.login-sub { color: rgba(255,255,255,.6); margin-bottom: 26px; font-size: 13px; margin-top: 4px; }
.login-card label { display: block; text-align: left; margin: 14px 0 6px; font-size: 12.5px; color: rgba(255,255,255,.65); letter-spacing: .5px; }
.login-card input {
  width: 100%; padding: 12px 14px; border: 1px solid rgba(255,255,255,.16); border-radius: 10px;
  font-size: 14px; background: rgba(255,255,255,.08); color: #fff; outline: none; transition: all .2s;
}
.login-card input::placeholder { color: rgba(255,255,255,.35); }
.login-card input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79,124,255,.25); background: rgba(255,255,255,.12); }
.login-card .btn-primary { margin-top: 8px; width: 100%; padding: 13px; font-size: 15px; letter-spacing: 6px; }
.login-tip { margin-top: 18px; font-size: 12px; color: rgba(255,255,255,.45); }
.login-switch { margin-top: 16px; font-size: 13px; color: rgba(255,255,255,.55); text-align: center; }
.login-switch a { color: var(--primary); text-decoration: none; }
.login-switch a:hover { text-decoration: underline; }
.error-text { color: #fca5a5; font-size: 13px; margin-top: 8px; min-height: 18px; text-align: left; }
.success-text { color: var(--success); font-size: 13px; margin-left: 12px; }

/* ===== 布局 ===== */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 216px; color: #a8b3cf; display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0;
  background: linear-gradient(180deg, #0a1024 0%, #0e1735 55%, #111a3d 100%);
  border-right: 1px solid rgba(255,255,255,.06);
}
.sidebar-logo {
  padding: 22px 20px 18px; display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.sidebar-logo .logo-badge {
  width: 40px; height: 40px; border-radius: 12px; flex-shrink: 0; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #4f7cff, #8b5cf6);
  box-shadow: 0 6px 18px rgba(79,124,255,.45);
}
.sidebar-logo .logo-text { line-height: 1.25; }
.sidebar-logo .logo-title { font-size: 15px; font-weight: 800; color: #fff; letter-spacing: .5px; }
.sidebar-logo .logo-sub { font-size: 11px; color: rgba(255,255,255,.45); margin-top: 2px; letter-spacing: 1px; }
.sidebar nav { flex: 1; padding: 14px 10px; overflow-y: auto; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 10px;
  margin-bottom: 4px; color: #a8b3cf; font-size: 14px; transition: all .18s; position: relative;
}
.nav-item:hover { background: rgba(255,255,255,.07); color: #fff; transform: translateX(2px); }
.nav-item.active {
  background: linear-gradient(135deg, rgba(79,124,255,.28), rgba(139,92,246,.22));
  color: #fff; font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(79,124,255,.35), 0 6px 18px rgba(79,124,255,.15);
}
.nav-item.active::before {
  content: ''; position: absolute; left: -10px; top: 20%; bottom: 20%; width: 3px;
  border-radius: 99px; background: var(--grad); box-shadow: 0 0 10px rgba(139,92,246,.8);
}
.sidebar-footer { padding: 14px 16px; border-top: 1px solid rgba(255,255,255,.07); }
.user-info { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: #cdd6ec; }
.user-info b { font-weight: 600; }
.logout { color: #8b96b8; font-size: 12.5px; padding: 4px 10px; border-radius: 8px; border: 1px solid rgba(255,255,255,.12); transition: all .15s; }
.logout:hover { color: #f87171; border-color: rgba(248,113,113,.5); background: rgba(248,113,113,.1); }
.main { flex: 1; margin-left: 216px; padding: 26px 32px; max-width: 1240px; }
.page { display: none; }
.page.active { display: block; animation: pageIn .28s ease; }
@keyframes pageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ===== 统计卡 ===== */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.stat-card {
  background: var(--panel); border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow); display: flex; align-items: center; gap: 14px;
  border: 1px solid var(--border); position: relative; overflow: hidden;
  transition: transform .18s, box-shadow .18s;
}
.stat-card::after { content: ''; position: absolute; right: -30px; top: -30px; width: 90px; height: 90px; border-radius: 50%; background: radial-gradient(circle, rgba(79,124,255,.08), transparent 70%); }
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.stat-icon {
  width: 46px; height: 46px; border-radius: 13px; flex-shrink: 0; font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(79,124,255,.14), rgba(139,92,246,.14));
  border: 1px solid rgba(79,124,255,.2);
}
.stat-card:nth-child(2) .stat-icon { background: linear-gradient(135deg, rgba(16,185,129,.14), rgba(16,185,129,.08)); border-color: rgba(16,185,129,.25); }
.stat-card:nth-child(3) .stat-icon { background: linear-gradient(135deg, rgba(245,166,35,.16), rgba(245,166,35,.08)); border-color: rgba(245,166,35,.28); }
.stat-card:nth-child(4) .stat-icon { background: linear-gradient(135deg, rgba(139,92,246,.16), rgba(139,92,246,.08)); border-color: rgba(139,92,246,.28); }
.stat-body { flex: 1; }
.stat-num { font-size: 28px; font-weight: 800; color: #16213a; letter-spacing: -.5px; line-height: 1.1; background: linear-gradient(135deg, #1e3a8a, #4f46e5); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-label { color: var(--text-sub); margin-top: 4px; font-size: 12.5px; }

/* ===== 面板 ===== */
.panel {
  background: var(--panel); border-radius: var(--radius); padding: 22px;
  box-shadow: var(--shadow); margin-bottom: 20px; border: 1px solid var(--border);
  transition: box-shadow .2s;
}
.panel:hover { box-shadow: var(--shadow-lg); }
.guide-list { padding-left: 20px; line-height: 2.1; }
.guide-list b { color: var(--primary-dark); }
.tip-text { color: var(--text-sub); line-height: 1.8; margin-top: 8px; font-size: 13px; }

/* ===== 工具栏 ===== */
.toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select, .panel input, .panel textarea, .panel select, .modal-body input, .modal-body textarea, .modal-body select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 9px; font-size: 14px; background: #fbfcfe; outline: none; transition: all .18s; font-family: inherit;
}
.toolbar input[type=text] { width: 280px; }
.toolbar input:focus, .toolbar select:focus, .panel input:focus, .panel textarea:focus, .panel select:focus, .modal-body input:focus, .modal-body textarea:focus, .modal-body select:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,124,255,.14); background: #fff;
}

/* ===== 按钮 ===== */
.btn {
  padding: 9px 16px; border: 1px solid var(--border); border-radius: 10px; background: #fff;
  color: var(--text); font-size: 14px; cursor: pointer; transition: all .18s; font-family: inherit;
}
.btn:hover { border-color: var(--primary); color: var(--primary); box-shadow: 0 4px 12px rgba(79,124,255,.15); transform: translateY(-1px); }
.btn-primary {
  background: var(--grad); color: #fff; border-color: transparent;
  box-shadow: 0 6px 18px rgba(79,124,255,.32); font-weight: 600;
}
.btn-primary:hover { background: linear-gradient(135deg, #4070f0, #7a4df0); color: #fff; box-shadow: 0 8px 24px rgba(79,124,255,.42); }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; border-color: var(--danger); box-shadow: none; transform: none; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 8px; }
.btn-block { width: 100%; margin-top: 16px; }

/* ===== 表格 ===== */
.table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--panel); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.table th, .table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { background: linear-gradient(180deg, #f7f9fd, #f0f3fa); color: #4a5570; font-weight: 700; font-size: 12.5px; letter-spacing: .3px; }
.table tbody tr { transition: background .12s; }
.table tbody tr:hover { background: #f5f8ff; }
.table tr:last-child td { border-bottom: none; }
.table td { max-width: 320px; word-break: break-word; }

/* ===== 徽章 ===== */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-green { background: #d1fae5; color: #059669; }
.badge-red { background: #fee2e2; color: #dc2626; }
.badge-blue { background: #dbeafe; color: #2563eb; }
.badge-gray { background: #f1f5f9; color: #64748b; }
.badge-yellow { background: #fef3c7; color: #d97706; }
.badge-ok { background: #d1fae5; color: #059669; }
.badge-new { background: #dbeafe; color: #2563eb; }

/* ===== 会话 ===== */
.conv-layout { display: flex; gap: 16px; height: calc(100vh - 190px); }
.conv-list { width: 320px; background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); overflow-y: auto; flex-shrink: 0; border: 1px solid var(--border); }
.conv-item { padding: 13px 14px; border-bottom: 1px solid var(--border); cursor: pointer; transition: background .12s; }
.conv-item:hover { background: #f5f8ff; }
.conv-item.active { background: linear-gradient(135deg, #eef4ff, #f3efff); border-left: 3px solid var(--primary); }
.conv-item .conv-name { font-weight: 600; font-size: 14px; display: flex; justify-content: space-between; }
.conv-item .conv-preview { color: var(--text-sub); font-size: 12px; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item .conv-time { color: #94a3b8; font-size: 11px; }
.chat-panel { flex: 1; background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--border); }
.chat-empty { flex: 1; display: flex; align-items: center; justify-content: center; color: #94a3b8; text-align: center; line-height: 2; }
.chat-head { padding: 13px 16px; border-bottom: 1px solid var(--border); font-weight: 600; display: flex; justify-content: space-between; align-items: center; background: linear-gradient(180deg, #fbfcfe, #f5f8fd); }
.chat-body { flex: 1; overflow-y: auto; padding: 16px; background: linear-gradient(180deg, #f6f8fc, #f2f5fb); }
.msg { display: flex; margin-bottom: 12px; }
.msg.in { justify-content: flex-start; }
.msg.out { justify-content: flex-end; }
.msg .bubble { max-width: 70%; padding: 10px 14px; border-radius: 14px; line-height: 1.6; font-size: 14px; white-space: pre-wrap; box-shadow: 0 2px 8px rgba(20,35,80,.06); }
.msg.in .bubble { background: #fff; border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg.out .bubble { background: var(--grad); color: #fff; border-bottom-right-radius: 4px; box-shadow: 0 4px 14px rgba(79,124,255,.3); }
.msg .meta { font-size: 11px; color: #94a3b8; margin-top: 4px; }
.msg.out .meta { text-align: right; }
.chat-input-bar { padding: 12px 16px; border-top: 1px solid var(--border); display: flex; gap: 10px; background: #fbfcfe; }
.chat-input-bar textarea { flex: 1; border: 1px solid var(--border); border-radius: 10px; padding: 10px; resize: none; font-size: 14px; font-family: inherit; outline: none; }
.chat-input-bar textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,124,255,.14); }

/* ===== 表单 ===== */
.form-row { display: flex; gap: 32px; align-items: center; }
.switch-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; }
.switch-label input { width: 16px; height: 16px; accent-color: var(--primary); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 10px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.panel label { display: block; font-size: 13px; color: var(--text-sub); margin: 10px 0 4px; }
.align-end { display: flex; align-items: flex-end; }
code { background: #eef2fa; padding: 2px 6px; border-radius: 6px; font-size: 12px; color: var(--primary-dark); border: 1px solid #e2e8f5; }

/* ===== 弹窗 ===== */
.modal-mask { position: fixed; inset: 0; background: rgba(13, 20, 45, .55); backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal {
  background: #fff; border-radius: 18px; width: 540px; max-width: 94vw; max-height: 88vh;
  display: flex; flex-direction: column; box-shadow: 0 30px 80px rgba(10, 20, 50, .35);
  border: 1px solid var(--border); overflow: hidden; animation: modalIn .22s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(.96) translateY(10px); } to { opacity: 1; transform: none; } }
.modal-head { padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 700; display: flex; justify-content: space-between; align-items: center; background: linear-gradient(135deg, #fbfcff, #f3f6fd); }
.modal-close { color: #94a3b8; font-size: 16px; transition: color .15s; }
.modal-close:hover { color: var(--danger); }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-body label { display: block; font-size: 13px; color: var(--text-sub); margin: 12px 0 4px; }
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; background: #fafbfe; }

/* ===== Toast ===== */
.toast {
  position: fixed; top: 26px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #16213a, #1e2c52); color: #fff; padding: 13px 26px;
  border-radius: 12px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .3s;
  z-index: 200; box-shadow: 0 12px 40px rgba(10,20,50,.35); border: 1px solid rgba(255,255,255,.1);
}
.toast.show { opacity: 1; }

/* ===== 快捷话术库 ===== */
.quick-bar {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  background: linear-gradient(135deg, rgba(79,124,255,.06), rgba(139,92,246,.06));
  border: 1px solid rgba(79,124,255,.18); border-radius: 12px; padding: 8px 12px; margin-bottom: 12px;
}
.quick-bar-label { font-size: 13px; font-weight: 700; color: var(--primary-dark); flex-shrink: 0; }
.quick-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.quick-chip-item { cursor: pointer; }
.quick-chip-item:hover { border-color: var(--primary); box-shadow: 0 2px 8px rgba(79,124,255,.2); }

/* ===== 内容创作（短视频生产线） ===== */
.video-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 14px 0; background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 6px; box-shadow: var(--shadow); }
.vtab { padding: 9px 16px; border-radius: 10px; font-size: 14px; color: var(--text-sub); font-weight: 600; transition: all .15s; }
.vtab:hover { background: #f0f4ff; color: var(--primary); }
.vtab.active { background: var(--grad); color: #fff; box-shadow: 0 5px 14px rgba(79,124,255,.3); }
.vtab-panel { display: none; }
.vtab-panel.active { display: block; animation: pageIn .25s ease; }
.workbench-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
@media (max-width: 1100px) { .workbench-grid { grid-template-columns: 1fr; } }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px;
  border: 1px solid var(--border); border-radius: 999px; font-size: 13px; cursor: pointer;
  background: #fff; user-select: none; transition: all .15s;
}
.chip:hover { border-color: var(--primary); box-shadow: 0 2px 8px rgba(79,124,255,.15); }
.chip.sel { background: var(--grad); border-color: transparent; color: #fff; box-shadow: 0 4px 12px rgba(79,124,255,.3); }
.chip-avatar img { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }
.tpl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.tpl-card {
  background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 18px;
  display: flex; flex-direction: column; gap: 8px; transition: all .2s; position: relative; overflow: hidden;
}
.tpl-card::before { content: ''; position: absolute; left: 0; top: 0; right: 0; height: 3px; background: var(--grad); opacity: 0; transition: opacity .2s; }
.tpl-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.tpl-card:hover::before { opacity: 1; }
.tpl-head { font-weight: 700; font-size: 15px; }
.tpl-industry { font-size: 12px; color: var(--primary-dark); background: linear-gradient(135deg, rgba(79,124,255,.1), rgba(139,92,246,.1)); padding: 2px 8px; border-radius: 6px; align-self: flex-start; }
.tpl-desc { font-size: 13px; color: var(--text-sub); line-height: 1.6; margin: 0; flex: 1; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 8px; }
.avatar-preview { width: 64px; height: 64px; border-radius: 14px; background: linear-gradient(135deg, #e0e7ff, #f0f9ff); display: flex; align-items: center; justify-content: center; font-size: 32px; overflow: hidden; border: 1px solid #dbe4ff; }
.avatar-preview img { width: 100%; height: 100%; object-fit: cover; }
.vd-render-status { margin-top: 10px; }
.vd-progress { height: 8px; background: #e8ecf5; border-radius: 999px; overflow: hidden; }
.vd-progress-bar { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), #8b5cf6, #f5a623); transition: width .5s; border-radius: 99px; }
.vd-step-text { font-size: 13px; color: var(--text-sub); margin-top: 8px; }
.tag { display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 6px; background: linear-gradient(135deg, #eef2ff, #f3efff); color: #4f46e5; font-weight: 600; }
.empty-cell { text-align: center; color: #94a3b8; padding: 24px 0; }
.ops { white-space: nowrap; }

@media (max-width: 900px) {
  .sidebar { width: 64px; }
  .sidebar-logo .logo-text, .nav-item span, .sidebar-footer { display: none; }
  .sidebar-logo { justify-content: center; padding: 18px 0; }
  .nav-item { text-align: center; padding: 12px 0; justify-content: center; }
  .nav-item.active::before { display: none; }
  .main { margin-left: 64px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .conv-layout { flex-direction: column; height: auto; }
  .conv-list { width: 100%; max-height: 260px; }
}