/* =====================================================================
   QKChat 设计系统 / Branding System  (Phase 4D + Theme Engine v2)
   Theme colors: html[data-theme] blocks below (SINGLE SOURCE OF TRUTH).
   Components below use var(--token) aliases bridged from --qk-*.
   ===================================================================== */

/* --- Theme Engine v2 tokens (see also shell enforcement rules) --- */
html[data-theme="dark-gold"] {
  --qk-bg: #0a0a0f; --qk-shell: #0a0a0f; --qk-sidebar: #101018; --qk-topbar: #14141c;
  --qk-surface: #14141c; --qk-surface-2: #1b1b27; --qk-card: #14141c;
  --qk-border: #2a2a3a; --qk-border-strong: #3a3a4e;
  --qk-text: #ececf1; --qk-text-muted: #9a9aab; --qk-text-soft: #6b6b7a;
  --qk-accent: #e5b53d; --qk-accent-2: #c8912b; --qk-on-accent: #0a0a0f;
  --qk-hover: rgba(255,255,255,.06); --qk-active: rgba(229,181,61,.14);
  --qk-danger: #ef5350; --qk-success: #34c759; --qk-warning: #f5a623; --qk-info: #4aa3ff;
  --qk-danger-soft: rgba(239,83,80,.15); --qk-success-soft: rgba(52,199,89,.15);
  --qk-warning-soft: rgba(245,166,35,.15); --qk-info-soft: rgba(74,163,255,.15);
  --qk-shadow-1: 0 1px 2px rgba(0,0,0,.4); --qk-shadow-2: 0 4px 14px rgba(0,0,0,.45);
  --qk-shadow-3: 0 12px 32px rgba(0,0,0,.5); --qk-glow: 0 6px 20px rgba(229,181,61,.22);
  --qk-ring: 0 0 0 3px rgba(229,181,61,.28); --qk-overlay: rgba(0,0,0,.72);
  --qk-accent-grad: linear-gradient(135deg,#f0c75a 0%,#c8912b 100%);
}
html[data-theme="light-blue"] {
  --qk-bg: #eef2f9; --qk-shell: #eef2f9; --qk-sidebar: #ffffff; --qk-topbar: #ffffff;
  --qk-surface: #ffffff; --qk-surface-2: #f3f6fc; --qk-card: #ffffff;
  --qk-border: #dce3ef; --qk-border-strong: #c6d0e2;
  --qk-text: #1a2233; --qk-text-muted: #5b6678; --qk-text-soft: #8a93a6;
  --qk-accent: #2563eb; --qk-accent-2: #1d4ed8; --qk-on-accent: #ffffff;
  --qk-hover: rgba(26,34,51,.05); --qk-active: rgba(37,99,235,.10);
  --qk-danger: #dc2626; --qk-success: #16a34a; --qk-warning: #d97706; --qk-info: #2563eb;
  --qk-danger-soft: rgba(220,38,38,.10); --qk-success-soft: rgba(22,163,74,.10);
  --qk-warning-soft: rgba(217,119,6,.10); --qk-info-soft: rgba(37,99,235,.10);
  --qk-shadow-1: 0 1px 2px rgba(20,40,80,.06); --qk-shadow-2: 0 4px 14px rgba(20,40,80,.08);
  --qk-shadow-3: 0 12px 32px rgba(20,40,80,.12); --qk-glow: 0 6px 20px rgba(37,99,235,.18);
  --qk-ring: 0 0 0 3px rgba(37,99,235,.22); --qk-overlay: rgba(15,23,42,.45);
  --qk-accent-grad: linear-gradient(135deg,#3b82f6 0%,#1d4ed8 100%);
}
html[data-theme="dark-blue"] {
  --qk-bg: #0b1220; --qk-shell: #0b1220; --qk-sidebar: #0f1729; --qk-topbar: #111c30;
  --qk-surface: #111c30; --qk-surface-2: #16243d; --qk-card: #111c30;
  --qk-border: #243758; --qk-border-strong: #33507e;
  --qk-text: #e6edf7; --qk-text-muted: #8ea0bd; --qk-text-soft: #5f7494;
  --qk-accent: #38bdf8; --qk-accent-2: #0ea5e9; --qk-on-accent: #08111f;
  --qk-hover: rgba(255,255,255,.06); --qk-active: rgba(56,189,248,.14);
  --qk-danger: #f87171; --qk-success: #22c55e; --qk-warning: #f59e0b; --qk-info: #38bdf8;
  --qk-danger-soft: rgba(248,113,113,.15); --qk-success-soft: rgba(34,197,94,.15);
  --qk-warning-soft: rgba(245,158,11,.15); --qk-info-soft: rgba(56,189,248,.15);
  --qk-shadow-1: 0 1px 2px rgba(0,0,0,.5); --qk-shadow-2: 0 4px 14px rgba(0,0,0,.5);
  --qk-shadow-3: 0 12px 32px rgba(0,0,0,.6); --qk-glow: 0 6px 20px rgba(56,189,248,.22);
  --qk-ring: 0 0 0 3px rgba(59,130,246,.30); --qk-overlay: rgba(0,0,0,.72);
  --qk-accent-grad: linear-gradient(135deg,#38bdf8 0%,#0ea5e9 100%);
}
html:not([data-theme]) {
  --qk-bg: #0a0a0f; --qk-shell: #0a0a0f; --qk-sidebar: #101018; --qk-topbar: #14141c;
  --qk-surface: #14141c; --qk-surface-2: #1b1b27; --qk-card: #14141c;
  --qk-border: #2a2a3a; --qk-border-strong: #3a3a4e;
  --qk-text: #ececf1; --qk-text-muted: #9a9aab; --qk-text-soft: #6b6b7a;
  --qk-accent: #e5b53d; --qk-accent-2: #c8912b; --qk-on-accent: #0a0a0f;
  --qk-hover: rgba(255,255,255,.06); --qk-active: rgba(229,181,61,.14);
  --qk-danger: #ef5350; --qk-success: #34c759; --qk-warning: #f5a623; --qk-info: #4aa3ff;
  --qk-danger-soft: rgba(239,83,80,.15); --qk-success-soft: rgba(52,199,89,.15);
  --qk-warning-soft: rgba(245,166,35,.15); --qk-info-soft: rgba(74,163,255,.15);
  --qk-shadow-1: 0 1px 2px rgba(0,0,0,.4); --qk-shadow-2: 0 4px 14px rgba(0,0,0,.45);
  --qk-shadow-3: 0 12px 32px rgba(0,0,0,.5); --qk-glow: 0 6px 20px rgba(229,181,61,.22);
  --qk-ring: 0 0 0 3px rgba(229,181,61,.28); --qk-overlay: rgba(0,0,0,.72);
  --qk-accent-grad: linear-gradient(135deg,#f0c75a 0%,#c8912b 100%);
}
html[data-theme], html:not([data-theme]) {
  --bg: var(--qk-bg); --surface-1: var(--qk-card); --surface-2: var(--qk-surface-2); --surface-3: var(--qk-surface-2);
  --border: var(--qk-border); --border-soft: var(--qk-border); --border-strong: var(--qk-border-strong);
  --accent: var(--qk-accent); --accent-2: var(--qk-accent-2); --accent-soft: var(--qk-active);
  --accent-grad: var(--qk-accent-grad); --on-accent: var(--qk-on-accent);
  --text: var(--qk-text); --text-2: var(--qk-text-muted); --text-3: var(--qk-text-soft);
  --card: var(--qk-card); --card2: var(--qk-surface-2); --muted: var(--qk-text-muted); --accent2: var(--qk-accent-2);
  --bg-body: var(--qk-bg); --bg-card: var(--qk-card); --bg-hover: var(--qk-surface-2);
  --gold: var(--qk-accent); --gold-dark: var(--qk-accent-2); --text-primary: var(--qk-text); --text-secondary: var(--qk-text-muted);
  --border-color: var(--qk-border); --warning: var(--qk-warning); --primary: var(--qk-accent);
  --danger: var(--qk-danger); --success: var(--qk-success); --warn: var(--qk-warning); --info: var(--qk-info);
  --danger-soft: var(--qk-danger-soft); --success-soft: var(--qk-success-soft); --warn-soft: var(--qk-warning-soft); --info-soft: var(--qk-info-soft);
  --shadow-1: var(--qk-shadow-1); --shadow-2: var(--qk-shadow-2); --shadow-3: var(--qk-shadow-3);
  --glow-accent: var(--qk-glow); --ring: var(--qk-ring);
  --widget-primary: var(--qk-accent); --widget-primary-dark: var(--qk-accent-2); --widget-radius: var(--r-lg);
  --panel: var(--qk-card); --panel-2: var(--qk-surface-2); --shadow: var(--qk-shadow-2);
  --brand-avatar-grad: var(--qk-accent-grad);
}
html[data-theme] body, html[data-theme] body.qk-enterprise { background: var(--qk-bg) !important; color: var(--qk-text) !important; }
html[data-theme] .sidebar, html[data-theme] .qk-sidebar, html[data-theme] .icon-bar, html[data-theme] .panel-area { background: var(--qk-sidebar) !important; border-color: var(--qk-border) !important; color: var(--qk-text) !important; }
html[data-theme] .header, html[data-theme] .qk-topbar { background: var(--qk-topbar) !important; border-color: var(--qk-border) !important; color: var(--qk-text) !important; }
html[data-theme] .card, html[data-theme] .stat-card, html[data-theme] .qk-card, html[data-theme] .modal, html[data-theme] .appear-menu { background: var(--qk-card) !important; border-color: var(--qk-border) !important; color: var(--qk-text) !important; }
html[data-theme] .btn-primary, html[data-theme] .qk-btn-primary { background: var(--qk-accent-grad) !important; color: var(--qk-on-accent) !important; }
html[data-theme] .nav-top.active, html[data-theme] .nav-item.active, html[data-theme] .icon-btn.active { background: var(--qk-active) !important; color: var(--qk-accent) !important; }
html[data-theme="light-blue"] .qtxw-screen, html[data-theme="light-blue"] .qtxw-login, html[data-theme="light-blue"] .agent-login, html[data-theme="light-blue"] .login-wrap { background: var(--qk-bg) !important; color: var(--qk-text) !important; }
html[data-theme="dark-blue"] .qtxw-screen, html[data-theme="dark-blue"] .qtxw-login, html[data-theme="dark-blue"] .agent-login { background: var(--qk-bg) !important; color: var(--qk-text) !important; }
html[data-theme="light-blue"] tr:hover, html[data-theme="dark-blue"] tr:hover { background: var(--qk-hover) !important; }
html[data-theme="light-blue"] .qtxw-btn, html[data-theme="dark-blue"] .qtxw-btn { background: var(--qk-accent-grad) !important; color: var(--qk-on-accent) !important; box-shadow: var(--qk-glow) !important; }
html[data-theme="light-blue"] .qtxw-h2 .g, html[data-theme="dark-blue"] .qtxw-h2 .g { color: var(--qk-accent) !important; background: none !important; -webkit-background-clip: unset !important; background-clip: unset !important; }
html[data-theme="light-blue"] .qtxw-card-title, html[data-theme="dark-blue"] .qtxw-card-title { color: var(--qk-text) !important; }
html[data-theme="light-blue"] .qtxw-input, html[data-theme="dark-blue"] .qtxw-input { background: var(--qk-surface-2) !important; border-color: var(--qk-border-strong) !important; color: var(--qk-text) !important; }
html[data-theme="light-blue"] .qtxw-input:focus, html[data-theme="dark-blue"] .qtxw-input:focus { border-color: var(--qk-accent) !important; box-shadow: var(--qk-ring) !important; }
html[data-theme="light-blue"] .qtxw-glass, html[data-theme="dark-blue"] .qtxw-glass { background: var(--qk-card) !important; border-color: var(--qk-border) !important; box-shadow: var(--qk-shadow-3) !important; }
html[data-theme="light-blue"] .qk-welcome, html[data-theme="dark-blue"] .qk-welcome { background: var(--qk-bg) !important; color: var(--qk-text) !important; }
html[data-theme="light-blue"] .qk-welcome-wash, html[data-theme="dark-blue"] .qk-welcome-wash { background: radial-gradient(900px 620px at 16% 26%, var(--qk-active), transparent 58%), var(--qk-bg) !important; }
html[data-theme="light-blue"] .qkw-btn, html[data-theme="dark-blue"] .qkw-btn { background: var(--qk-accent-grad) !important; color: var(--qk-on-accent) !important; box-shadow: var(--qk-glow) !important; }
html[data-theme="light-blue"] .qkw-brand-text .n, html[data-theme="dark-blue"] .qkw-brand-text .n { background: none !important; -webkit-background-clip: unset !important; color: var(--qk-accent) !important; }
html[data-theme="light-blue"] .qkw-headline .g, html[data-theme="dark-blue"] .qkw-headline .g { background: none !important; -webkit-background-clip: unset !important; color: var(--qk-accent) !important; }
html[data-theme="light-blue"] .qkw-glass, html[data-theme="dark-blue"] .qkw-glass { background: var(--qk-card) !important; border-color: var(--qk-border) !important; }
html[data-theme="light-blue"] .qkw-input, html[data-theme="dark-blue"] .qkw-input { background: var(--qk-surface-2) !important; border-color: var(--qk-border-strong) !important; color: var(--qk-text) !important; }
html[data-theme="light-blue"] .qkw-input:focus, html[data-theme="dark-blue"] .qkw-input:focus { border-color: var(--qk-accent) !important; box-shadow: var(--qk-ring) !important; }

:root {
  --r-sm: 6px; --r-md: 10px; --r-lg: 14px; --r-xl: 20px; --r-pill: 999px;
  --brand-name: "QKChat"; --brand-name-cn: "乾坤云聊"; --brand-logo-size: 32px; --brand-welcome-img: none;
  --health-green: var(--qk-success); --health-yellow: var(--qk-warning); --health-red: var(--qk-danger);
}

/* ---------- 4. 组件原语（.qk- 前缀，可被各页采用，不污染既有类） ---------- */
.qk-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border: 1px solid transparent; border-radius: var(--r-md);
  font-size: 14px; font-weight: 600; line-height: 1; cursor: pointer;
  transition: transform .12s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  background: var(--surface-2); color: var(--text);
}
.qk-btn:hover { transform: translateY(-1px); }
.qk-btn:active { transform: translateY(0); }
.qk-btn:focus-visible { outline: none; box-shadow: var(--ring); }
.qk-btn-primary { background: var(--accent-grad); color: var(--on-accent); }
.qk-btn-primary:hover { box-shadow: var(--glow-accent); }
.qk-btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.qk-btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.qk-btn-danger { background: var(--danger); color: #fff; }
.qk-btn-sm { padding: 6px 13px; font-size: 12px; border-radius: var(--r-sm); }
.qk-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }

.qk-card {
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: var(--r-lg); box-shadow: var(--shadow-1);
  transition: border-color .15s ease, box-shadow .15s ease, transform .12s ease;
}
.qk-card-hover:hover { border-color: var(--border-strong); box-shadow: var(--shadow-2); transform: translateY(-2px); }

.qk-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: var(--r-pill); font-size: 11px; font-weight: 600;
}
.qk-badge-success { background: var(--success-soft); color: var(--success); }
.qk-badge-danger { background: var(--danger-soft); color: var(--danger); }
.qk-badge-warn { background: var(--warn-soft); color: var(--warn); }
.qk-badge-muted { background: var(--surface-3); color: var(--text-2); }

.qk-input {
  width: 100%; padding: 10px 12px; background: var(--surface-3);
  border: 1px solid var(--border); border-radius: var(--r-md);
  color: var(--text); font-size: 14px; outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.qk-input:focus { border-color: var(--accent); box-shadow: var(--ring); }
.qk-input::placeholder { color: var(--text-3); }

/* 自定义滚动条（统一质感） */
.qk-scroll::-webkit-scrollbar { width: 8px; height: 8px; }
.qk-scroll::-webkit-scrollbar-track { background: transparent; }
.qk-scroll::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: var(--r-pill); }
.qk-scroll::-webkit-scrollbar-thumb:hover { background: var(--accent-2); }

/* ---------- 5. 状态组件：loading / skeleton / empty / error ---------- */
.qk-spinner {
  width: 26px; height: 26px; border-radius: 50%;
  border: 3px solid var(--border); border-top-color: var(--accent);
  animation: qk-spin .7s linear infinite; margin: 0 auto;
}
@keyframes qk-spin { to { transform: rotate(360deg); } }

.qk-skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface-3) 37%, var(--surface-2) 63%);
  background-size: 400% 100%; border-radius: var(--r-sm);
  animation: qk-shimmer 1.3s ease infinite;
}
@keyframes qk-shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

.qk-loading, .qk-empty, .qk-error {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; padding: 40px 20px; text-align: center; color: var(--text-2); font-size: 13px;
}
.qk-empty .qk-state-icon, .qk-error .qk-state-icon { font-size: 34px; opacity: .55; line-height: 1; }
.qk-empty .qk-state-title, .qk-error .qk-state-title { color: var(--text); font-size: 15px; font-weight: 600; }
.qk-error .qk-state-icon { color: var(--danger); opacity: .8; }
.qk-state-action { margin-top: 4px; }

/* ---------- 6. 工具类 ---------- */
.qk-elev-1 { box-shadow: var(--shadow-1); }
.qk-elev-2 { box-shadow: var(--shadow-2); }
.qk-gold-text { color: var(--accent); }
.qk-no-x { overflow-x: hidden; max-width: 100%; }
@media (prefers-reduced-motion: reduce) {
  .qk-spinner, .qk-skeleton { animation: none; }
  .qk-btn, .qk-card-hover { transition: none; }
}

/* =====================================================================
   7. QK Design System v1.0 增补（仅追加，不改既有块）
   - 公共契约 token（对外 12）alias 到 canonical
   - 新增主题：dark-blue / pure-dark / light（dark-gold/light-blue 已存在）
   说明：契约 alias 定义在 :root，值用 var() 惰性解析，
        故所有主题（含新主题）只要给出 --surface-*/--accent-*/--text-*/--warn 即自动生效。
   ===================================================================== */

/* ---------- 7a. 间距 / 动效（非主题色） ---------- */
:root {
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-7: 32px; --sp-8: 40px;
  --sp-9: 48px; --sp-10: 64px;
  --t-fast: 150ms; --t-med: 200ms; --t-slow: 320ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --lift: -3px;
}

/* ---------- 7b. legacy themes removed — use Theme Engine v2 html[data-theme] blocks ---------- */

/* ---------- 7c. Pure Dark（纯黑高对比 · OLED 友好） ---------- */
[data-theme="pure-dark"] {
  --bg: #000000;
  --surface-1: #0c0c0c;
  --surface-2: #151515;
  --surface-3: #1e1e1e;
  --border: #262626;
  --border-soft: #1c1c1c;
  --border-strong: #3a3a3a;

  --accent: #ffffff;
  --accent-2: #d4d4d4;
  --accent-soft: rgba(255, 255, 255, 0.10);
  --accent-grad: linear-gradient(135deg, #ffffff 0%, #bdbdbd 100%);
  --on-accent: #000000;

  --text: #f2f2f2;
  --text-2: #9a9a9a;
  --text-3: #6a6a6a;

  --danger: #f85149;
  --danger-soft: rgba(248, 81, 73, 0.15);
  --success: #3fb950;
  --success-soft: rgba(63, 185, 80, 0.15);
  --warn: #d29922;
  --warn-soft: rgba(210, 153, 34, 0.15);
  --info: #58a6ff;
  --info-soft: rgba(88, 166, 255, 0.15);

  --health-green: #3fb950;
  --health-yellow: #d29922;
  --health-red: #f85149;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.7);
  --shadow-2: 0 4px 14px rgba(0, 0, 0, 0.7);
  --shadow-3: 0 12px 32px rgba(0, 0, 0, 0.8);
  --glow-accent: 0 6px 20px rgba(255, 255, 255, 0.12);
  --ring: 0 0 0 3px rgba(255, 255, 255, 0.22);
}

/* ---------- 7d. Light（中性浅色 · 紫强调） ---------- */
[data-theme="light"] {
  --bg: #f6f7f9;
  --surface-1: #ffffff;
  --surface-2: #eef0f3;
  --surface-3: #e4e7ec;
  --border: #dce0e6;
  --border-soft: #e8ebef;
  --border-strong: #c4cad3;

  --accent: #7c3aed;
  --accent-2: #6d28d9;
  --accent-soft: rgba(124, 58, 237, 0.10);
  --accent-grad: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
  --on-accent: #ffffff;

  --text: #1a1d23;
  --text-2: #5d6573;
  --text-3: #8a93a6;

  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.10);
  --success: #15803d;
  --success-soft: rgba(21, 128, 61, 0.10);
  --warn: #b45309;
  --warn-soft: rgba(180, 83, 9, 0.10);
  --info: #2563eb;
  --info-soft: rgba(37, 99, 235, 0.10);

  --health-green: #15803d;
  --health-yellow: #b45309;
  --health-red: #dc2626;

  --shadow-1: 0 1px 2px rgba(20, 30, 50, 0.05);
  --shadow-2: 0 4px 14px rgba(20, 30, 50, 0.08);
  --shadow-3: 0 12px 32px rgba(20, 30, 50, 0.12);
  --glow-accent: 0 6px 20px rgba(124, 58, 237, 0.16);
  --ring: 0 0 0 3px rgba(37, 99, 235, 0.22);
}

/* =====================================================================
   8. Enterprise Welcome Experience（登录欢迎体验）
   品牌规范：固定黑金质感，独立于主题切换；左品牌叙事 + 右毛玻璃登录卡。
   背景：极缓慢黑金数据流（canvas）+ 柔和光束（CSS），克制无游戏感。
   作用域全部限定在 .qk-welcome / .qkw- 前缀，不污染既有登录样式。
   ===================================================================== */
.qk-welcome{
  position:fixed; inset:0; z-index:1; overflow:hidden;
  display:flex; align-items:stretch;
  background:#06060a; color:#ececf1;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
.qk-welcome *{ box-sizing:border-box; }
.qk-welcome-canvas{ position:absolute; inset:0; width:100%; height:100%; z-index:0; display:block; }
/* 光晕 + 极缓慢漂移光束（装饰，非数据） */
.qk-welcome-wash{ position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(1100px 760px at 16% 26%, rgba(240,199,90,.12), transparent 58%),
    radial-gradient(900px 720px at 88% 84%, rgba(200,145,43,.09), transparent 60%),
    linear-gradient(115deg, rgba(6,6,10,.18) 0%, rgba(6,6,10,.55) 58%, rgba(6,6,10,.82) 100%);
}
.qk-welcome-beam{ position:absolute; z-index:1; pointer-events:none; filter:blur(40px); opacity:.5;
  background:linear-gradient(180deg, rgba(229,181,61,.0), rgba(229,181,61,.34), rgba(229,181,61,.0)); }
.qk-welcome-beam.b1{ top:-20%; left:24%; width:160px; height:140%; transform:rotate(14deg);
  animation:qkwBeam 26s ease-in-out infinite; }
.qk-welcome-beam.b2{ top:-25%; left:62%; width:120px; height:150%; transform:rotate(-10deg);
  animation:qkwBeam 34s ease-in-out infinite reverse; }
@keyframes qkwBeam{ 0%,100%{ transform:translateX(-30px) rotate(12deg); opacity:.30; }
  50%{ transform:translateX(40px) rotate(12deg); opacity:.6; } }

/* ---- 左：品牌叙事 ---- */
.qk-welcome-left{ position:relative; z-index:2; flex:1.12 1 0; display:flex; flex-direction:column; justify-content:center;
  padding:7vh 5.6vw; gap:30px; min-width:0; }
.qkw-brand{ display:flex; align-items:center; gap:16px; }
.qkw-logo-chip{ display:inline-flex; align-items:center; justify-content:center;
  width:74px; height:74px; border-radius:20px; background:linear-gradient(160deg,#0e0e15,#050507);
  border:1px solid rgba(229,181,61,.26); box-shadow:0 14px 36px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.05); }
.qkw-logo-chip img{ width:56px; height:56px; object-fit:contain; display:block; }
.qkw-brand-text .n{ font-size:26px; font-weight:800; letter-spacing:.5px;
  background:linear-gradient(135deg,#f6d785,#d39f33); -webkit-background-clip:text; background-clip:text; color:transparent; }
.qkw-brand-text .t{ font-size:13px; color:#b9a06a; letter-spacing:3px; margin-top:3px; }
.qkw-headline{ font-size:clamp(30px,3.4vw,46px); font-weight:800; line-height:1.18; margin:0; letter-spacing:.5px; }
.qkw-headline .g{ background:linear-gradient(120deg,#f6d785 10%,#cd9a30 90%);
  -webkit-background-clip:text; background-clip:text; color:transparent; }
.qkw-sub{ font-size:clamp(14px,1.15vw,17px); color:#c8cdd8; line-height:1.7; max-width:560px; margin:0; }
.qkw-sub .dot{ color:#e5b53d; margin:0 8px; }
.qkw-chips{ display:flex; flex-wrap:wrap; gap:10px; max-width:580px; }
.qkw-chip{ display:inline-flex; align-items:center; gap:7px; padding:8px 14px; border-radius:999px;
  font-size:13px; font-weight:600; color:#e8d9ad;
  background:rgba(229,181,61,.07); border:1px solid rgba(229,181,61,.20); backdrop-filter:blur(6px); }
.qkw-chip::before{ content:""; width:6px; height:6px; border-radius:50%;
  background:linear-gradient(135deg,#f0c75a,#c8912b); box-shadow:0 0 8px rgba(229,181,61,.7); }
.qkw-stats{ display:flex; gap:46px; margin-top:8px; flex-wrap:wrap; }
.qkw-stat .v{ font-size:30px; font-weight:800; letter-spacing:.5px;
  background:linear-gradient(135deg,#f6d785,#cd9a30); -webkit-background-clip:text; background-clip:text; color:transparent; }
.qkw-stat .l{ font-size:12.5px; color:#9aa0ad; margin-top:4px; letter-spacing:1px; }

/* ---- 右：毛玻璃登录卡 ---- */
.qk-welcome-right{ position:relative; z-index:2; flex:.88 1 0; display:flex; align-items:center; justify-content:center; padding:24px; }
.qk-glass{ width:100%; max-width:396px;
  background:rgba(18,18,26,.55); backdrop-filter:blur(22px) saturate(150%); -webkit-backdrop-filter:blur(22px) saturate(150%);
  border:1px solid rgba(229,181,61,.18); border-radius:22px;
  box-shadow:0 32px 80px rgba(0,0,0,.55), 0 2px 0 rgba(255,255,255,.04) inset;
  padding:38px 34px; animation:qkwRise .7s cubic-bezier(.16,1,.3,1) both; }
@keyframes qkwRise{ from{ opacity:0; transform:translateY(18px); } to{ opacity:1; transform:translateY(0); } }
.qkw-glass-brand{ display:none; align-items:center; gap:12px; margin-bottom:22px; }
.qkw-glass-brand img{ width:40px; height:40px; object-fit:contain;
  background:linear-gradient(160deg,#0e0e15,#050507); border:1px solid rgba(229,181,61,.26); border-radius:11px; padding:5px; }
.qkw-card-title{ font-size:21px; font-weight:800; margin:0 0 4px; color:#f4f5f8; }
.qkw-card-sub{ font-size:13px; color:#9aa0ad; margin:0 0 26px; }
.qkw-field{ margin-bottom:16px; }
.qkw-field label{ display:block; font-size:12.5px; color:#aeb4c0; margin-bottom:7px; font-weight:600; letter-spacing:.3px; }
.qkw-input-wrap{ position:relative; }
.qkw-input{ width:100%; padding:12px 14px; font-size:14px; color:#f0f1f5;
  background:rgba(10,10,15,.55); border:1px solid rgba(229,181,61,.18); border-radius:12px; outline:none;
  transition:border-color .15s ease, box-shadow .15s ease, background .15s ease; }
.qkw-input::placeholder{ color:#6b6f7c; }
.qkw-input:focus{ border-color:#e5b53d; background:rgba(10,10,15,.75); box-shadow:0 0 0 3px rgba(229,181,61,.20); }
.qkw-eye{ position:absolute; right:8px; top:50%; transform:translateY(-50%);
  background:none; border:none; color:#8a8f9c; cursor:pointer; padding:6px; font-size:13px; line-height:1; }
.qkw-eye:hover{ color:#e5b53d; }
.qkw-row{ display:flex; align-items:center; justify-content:space-between; margin:4px 0 22px; }
.qkw-check{ display:inline-flex; align-items:center; gap:8px; font-size:13px; color:#aeb4c0; cursor:pointer; user-select:none; }
.qkw-check input{ width:15px; height:15px; accent-color:#e5b53d; cursor:pointer; }
.qkw-link{ font-size:13px; color:#cda84e; text-decoration:none; }
.qkw-link:hover{ color:#f0c75a; }
.qkw-btn{ width:100%; padding:13px 18px; font-size:15px; font-weight:700; cursor:pointer;
  color:#0a0a0f; border:none; border-radius:12px; letter-spacing:1px;
  background:linear-gradient(135deg,#f0c75a 0%,#c8912b 100%);
  box-shadow:0 10px 26px rgba(229,181,61,.28); transition:transform .12s ease, box-shadow .15s ease, filter .15s ease; }
.qkw-btn:hover{ transform:translateY(-1px); box-shadow:0 14px 32px rgba(229,181,61,.36); filter:brightness(1.04); }
.qkw-btn:active{ transform:translateY(0); }
.qkw-btn:disabled{ opacity:.6; cursor:not-allowed; transform:none; box-shadow:none; }
.qkw-err{ min-height:18px; margin-top:14px; font-size:13px; color:#ff8a87; text-align:center; }
.qkw-foot{ margin-top:22px; padding-top:18px; border-top:1px solid rgba(255,255,255,.06);
  text-align:center; font-size:12px; color:#7b8090; letter-spacing:.4px; }

/* 品牌标记位图（替换原 inline SVG）——居中等比，沿用各自 .mark/.qk-mark 容器尺寸 */
.qk-brand .mark img, .qk-brand .qk-mark img{ width:74%; height:74%; object-fit:contain; display:block; }

/* ---- 响应式：窄屏收起左叙事，登录卡居中浮于黑金背景 ---- */
@media (max-width:980px){
  .qk-welcome{ flex-direction:column; }
  .qk-welcome-left{ display:none; }
  .qk-welcome-right{ flex:1 1 auto; }
  .qkw-glass-brand{ display:flex; }
}
@media (max-width:420px){
  .qk-glass{ padding:30px 22px; border-radius:18px; }
}
@media (prefers-reduced-motion:reduce){
  .qk-welcome-beam{ animation:none; }
  .qk-glass{ animation:none; }
}

/* =====================================================================
   8. QK Design Language 1.0 — 全系统状态语言 / 排版 / 动效
   ===================================================================== */

/* Typography scale */
.qk-type-page-title { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; color: var(--qk-text-primary); }
.qk-type-section-title { font-size: 18px; font-weight: 600; color: var(--qk-text-primary); }
.qk-type-card-title { font-size: 15px; font-weight: 600; color: var(--qk-text-primary); }
.qk-type-body { font-size: 14px; line-height: 1.55; color: var(--qk-text-primary); }
.qk-type-caption { font-size: 12px; color: var(--qk-text-secondary); }
.qk-type-table { font-size: 13px; color: var(--qk-text-primary); }
.qk-type-badge { font-size: 11px; font-weight: 600; }
.qk-type-metric { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--qk-gold); }

/* Unified status dot language */
.qk-status-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  margin-right: 6px; flex-shrink: 0; vertical-align: middle;
  transition: background var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.qk-status-dot.online, .qk-status-dot.healthy, .qk-status-dot.active { background: var(--qk-success); box-shadow: 0 0 0 2px rgba(34,197,94,.25); }
.qk-status-dot.busy, .qk-status-dot.warning, .qk-status-dot.watch { background: var(--qk-warning); }
.qk-status-dot.invisible, .qk-status-dot.hidden, .qk-status-dot.disabled { background: var(--qk-neutral); }
.qk-status-dot.offline, .qk-status-dot.critical, .qk-status-dot.blocked, .qk-status-dot.enforce { background: var(--qk-danger); }
.qk-status-dot.dry-run, .qk-status-dot.info { background: var(--qk-info); }
.qk-status-dot.pulse { animation: qk-status-pulse 1.8s ease-in-out infinite; }
@keyframes qk-status-pulse { 0%,100%{ opacity:1; } 50%{ opacity:.45; } }

/* QK_STATUS_COMPONENT — emoji + 文字（禁止纯颜色灯） */
.qk-status-label {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 600; line-height: 1.35;
  color: var(--qk-text-secondary); white-space: nowrap;
}
.qk-status-label.qk-status-multiline { flex-direction: column; align-items: flex-start; white-space: normal; }
.qk-status-sub { display: block; font-size: 11px; font-weight: 500; color: var(--qk-text-muted, var(--qk-text-secondary)); opacity: .85; margin-top: 1px; }

/* Agent status button (workbench + admin lists) */
.qk-agent-status-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 20px; border: 1px solid var(--qk-border);
  background: transparent; color: var(--qk-text-secondary); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all var(--t-fast) var(--ease);
}
.qk-agent-status-btn:hover { transform: translateY(-1px); border-color: var(--qk-gold); }
.qk-agent-status-btn.active[data-status="online"] { background: rgba(34,197,94,.18); border-color: var(--qk-success); color: var(--qk-success); }
.qk-agent-status-btn.active[data-status="busy"] { background: rgba(245,158,11,.18); border-color: var(--qk-warning); color: var(--qk-warning); }
.qk-agent-status-btn.active[data-status="invisible"] { background: rgba(107,114,128,.18); border-color: var(--qk-neutral); color: #9ca3af; }
.qk-agent-status-btn.active[data-status="offline"] { background: rgba(239,68,68,.15); border-color: var(--qk-danger); color: var(--qk-danger); }

/* Capacity health bar */
.qk-cap-bar { height: 8px; border-radius: var(--r-pill); background: var(--surface-3); overflow: hidden; }
.qk-cap-bar > i { display: block; height: 100%; border-radius: inherit; transition: width var(--t-slow) var(--ease-out); }
.qk-cap-bar.healthy > i { background: linear-gradient(90deg, #22c55e, #4ade80); }
.qk-cap-bar.watch > i { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.qk-cap-bar.warning > i { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.qk-cap-bar.critical > i { background: linear-gradient(90deg, #ef4444, #f87171); }

/* Bulk action bar */
.qk-bulk-bar {
  display: none; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 14px; margin-bottom: 10px;
  background: var(--accent-soft); border: 1px solid var(--border); border-radius: var(--r-md);
}
.qk-bulk-bar.show { display: flex; }