/* style.css — 小羊网页问答 v2 · 参考主流 LLM 界面(ChatGPT / DeepSeek / Kimi)重新设计 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --font: "Inter", -apple-system, "SF Pro Text", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --line: #e8eaf0;
  --line-soft: #eef0f4;

  --ink: #1b1f2a;
  --ink-2: #3d4354;
  --sub: #8b91a5;

  --brand: #3b6cd4;
  --brand-dk: #2f57b0;
  --brand-soft: #eef3fd;
  --grad: linear-gradient(135deg, #3b6cd4 0%, #7aa3ec 100%);

  --ok: #16a34a;
  --err: #d43a3a;

  /* 深色侧栏 */
  --side-bg: #0e1526;
  --side-line: rgba(255,255,255,.07);
  --side-hover: #17203a;
  --side-on: #1b2742;
  --side-ink: #e8ecf6;
  --side-sub: #6b7690;

  --shadow-card: 0 1px 2px rgba(16,24,40,.05), 0 4px 16px rgba(16,24,40,.06);
  --radius: 12px;
}

html, body { height: 100%; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #d5d9e2; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #bfc6d4; }
::-webkit-scrollbar-track { background: transparent; }

/* ==================== 登录 ==================== */
.login-mask {
  position: fixed; inset: 0; z-index: 99;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(600px 400px at 15% 20%, rgba(59,108,212,.28), transparent 60%),
    radial-gradient(700px 500px at 85% 80%, rgba(122,163,236,.22), transparent 60%),
    linear-gradient(160deg, #0e1526 0%, #16203a 55%, #0e1526 100%);
}
.login-card {
  width: 360px; padding: 40px 36px 28px; text-align: center;
  background: rgba(255,255,255,.97); border-radius: 20px;
  box-shadow: 0 24px 64px rgba(0,0,0,.4);
  animation: rise .35s ease;
}
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.login-logo {
  width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 18px;
  box-shadow: 0 8px 20px rgba(59,108,212,.4); overflow: hidden;
}
.login-logo img, .welcome-ico img, .brand-ico img { width: 100%; height: 100%; display: block; }
.login-card h2 { font-size: 20px; letter-spacing: 1px; }
.login-sub { color: var(--sub); font-size: 13px; margin: 6px 0 22px; }
.login-card input {
  width: 100%; padding: 12px 14px; margin-bottom: 12px;
  border: 1px solid #d4d9e4; border-radius: 10px; font-size: 14px;
  font-family: var(--font); outline: none; background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.login-card input::placeholder { color: #a3a9bc; }
.login-card input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(59,108,212,.12); }
.login-err { color: var(--err); font-size: 12.5px; min-height: 18px; margin-bottom: 4px; }
#login-btn {
  width: 100%; padding: 12px; border: none; border-radius: 10px;
  background: var(--grad); color: #fff; font-size: 15px; letter-spacing: 4px;
  cursor: pointer; transition: filter .15s, transform .1s;
}
#login-btn:hover { filter: brightness(1.06); }
#login-btn:active { transform: scale(.985); }
.login-note { margin-top: 18px; font-size: 11.5px; color: var(--sub); }

/* ==================== 布局 ==================== */
.app { display: flex; height: 100vh; }
.topbar { display: none; }

/* ---------- 侧栏 ---------- */
.sidebar {
  width: 280px; flex: none; display: flex; flex-direction: column;
  background: var(--side-bg); color: var(--side-ink);
  padding: 16px 14px 12px;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 2px 6px 16px; }
.brand-ico {
  width: 34px; height: 34px; border-radius: 10px; flex: none; overflow: hidden;
}
.brand-name { font-size: 15px; font-weight: 700; letter-spacing: .5px; }
.brand-sub { font-size: 10.5px; color: var(--side-sub); letter-spacing: 1px; margin-top: 1px; }

.new-chat {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--side-line); background: rgba(255,255,255,.05);
  color: var(--side-ink); border-radius: 10px; padding: 10px;
  font-size: 13.5px; cursor: pointer; margin-bottom: 14px;
  transition: background .15s, border-color .15s;
}
.new-chat:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.18); }
.new-chat .plus { font-size: 15px; }

.side-section { margin-bottom: 6px; }
.side-title {
  font-size: 11px; color: var(--side-sub); letter-spacing: 1.5px;
  padding: 8px 8px 8px; text-transform: uppercase;
}

/* 角色列表(卡片式) */
.role-list { display: flex; flex-direction: column; gap: 3px; }
.role-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 10px; cursor: pointer;
  border: 1px solid transparent; transition: background .12s, border-color .12s;
}
.role-item:hover { background: var(--side-hover); }
.role-item.on { background: var(--side-on); border-color: rgba(122,163,236,.35); }
.role-item .r-ico {
  width: 28px; height: 28px; flex: none; border-radius: 8px;
  background: rgba(255,255,255,.07); display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.role-item.on .r-ico { background: rgba(122,163,236,.2); }
.role-item .r-name { font-size: 13px; color: var(--side-ink); line-height: 1.3; }
.role-item .r-desc { font-size: 10.5px; color: var(--side-sub); line-height: 1.35; }

/* 会话列表 */
.side-convs { flex: 1; display: flex; flex-direction: column; min-height: 60px; }
.conv-list { flex: 1; overflow-y: auto; }
.conv-list::-webkit-scrollbar-thumb { background: #263154; }
.conv-item {
  padding: 9px 10px; border-radius: 9px; font-size: 13px; cursor: pointer;
  color: #b9c2d8; display: flex; justify-content: space-between; align-items: center; gap: 8px;
  transition: background .12s;
}
.conv-item span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv-item:hover { background: var(--side-hover); }
.conv-item.on { background: var(--side-on); color: var(--side-ink); }
.conv-item .del {
  visibility: hidden; flex: none; color: var(--side-sub);
  border: none; background: none; cursor: pointer; font-size: 12px; padding: 2px 4px;
}
.conv-item:hover .del { visibility: visible; }
.conv-item .del:hover { color: #ff8080; }
.conv-empty { padding: 8px 10px; font-size: 12.5px; color: var(--side-sub); }

.side-foot {
  display: flex; align-items: center; gap: 10px;
  border-top: 1px solid var(--side-line); padding: 12px 6px 2px; margin-top: 10px;
}
.foot-avatar {
  width: 30px; height: 30px; flex: none; border-radius: 50%;
  background: var(--grad); color: #fff; font-size: 13px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.foot-info { flex: 1; min-width: 0; }
.foot-name { font-size: 13px; color: var(--side-ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.foot-quota { font-size: 11px; color: var(--side-sub); margin-top: 1px; }
.link-btn { border: none; background: none; color: var(--side-sub); cursor: pointer; font-size: 12px; }
.link-btn:hover { color: var(--side-ink); }

/* ==================== 主区 ==================== */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--bg); }
.msgs { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.msgs-inner { max-width: 792px; margin: 0 auto; padding: 34px 28px 24px; }

/* ---------- 欢迎页 ---------- */
.welcome { max-width: 680px; margin: 7vh auto 0; padding: 0 28px 20px; }
.welcome-head { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }
.welcome-ico {
  width: 56px; height: 56px; flex: none; border-radius: 16px; overflow: hidden;
  box-shadow: 0 8px 20px rgba(59,108,212,.3);
}
.welcome h1 { font-size: 24px; letter-spacing: .3px; }
.welcome .w-sub { color: var(--sub); font-size: 13.5px; margin-top: 4px; }
.sug-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 26px; }
.sug {
  text-align: left; background: var(--bg-soft); border: 1px solid var(--line-soft);
  border-radius: 14px; padding: 15px 17px; cursor: pointer;
  transition: border-color .15s, box-shadow .15s, transform .1s;
}
.sug:hover { border-color: rgba(59,108,212,.4); box-shadow: var(--shadow-card); transform: translateY(-1px); }
.sug .s-tag { display: inline-block; font-size: 13px; font-weight: 500; color: var(--brand); background: var(--brand-soft); border-radius: 999px; padding: 3px 12px; margin-bottom: 9px; }
.sug .s-q { font-size: 15px; color: var(--ink-2); line-height: 1.6; }
.tips { background: var(--bg-soft); border-radius: 14px; padding: 14px 18px; border: 1px solid var(--line-soft); }
.tip { display: block; font-size: 12.5px; color: var(--sub); line-height: 2; }

/* ---------- 消息 ---------- */
.msg { display: flex; gap: 14px; margin-bottom: 28px; }
.avatar {
  width: 32px; height: 32px; border-radius: 10px; flex: none; font-size: 14px;
  display: flex; align-items: center; justify-content: center; font-weight: 600;
}
.msg.ai .avatar { background: var(--grad); color: #fff; box-shadow: 0 2px 8px rgba(59,108,212,.3); }
.msg.user { flex-direction: row-reverse; }
.msg.user .avatar { background: #46506a; color: #fff; border-radius: 50%; }
.msg-body { min-width: 0; flex: 1; }

.msg.user .bubble {
  display: inline-block; float: right;
  background: var(--bg-soft); border: 1px solid var(--line-soft);
  border-radius: 18px 18px 4px 18px; padding: 11px 16px;
  font-size: 15px; line-height: 1.75; color: var(--ink);
  white-space: pre-wrap; word-break: break-word; max-width: 100%;
}
.msg.user .msg-body { display: flex; flex-direction: column; align-items: flex-end; }
.msg.ai .bubble { font-size: 15.5px; line-height: 1.9; color: var(--ink-2); word-break: break-word; }
.bubble.err {
  color: var(--err); background: #fdf1f1; border: 1px solid #f3d5d5;
  border-radius: 12px; padding: 10px 14px; font-size: 13.5px;
}

.msg-meta { display: flex; align-items: center; gap: 12px; margin-top: 8px; font-size: 12px; color: var(--sub); }
.msg-copy {
  border: none; background: none; color: var(--sub); font-size: 11.5px; cursor: pointer;
  padding: 2px 6px; border-radius: 6px; opacity: 0; transition: opacity .15s, background .15s, color .15s;
}
.msg:hover .msg-copy { opacity: 1; }
.msg-copy:hover { background: var(--bg-soft); color: var(--brand); }

.sources { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.source-chip {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--sub);
  font-size: 12px; border-radius: 999px; padding: 3px 10px;
  max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  transition: color .12s, border-color .12s;
}
.source-chip:hover { color: var(--brand); border-color: rgba(59,108,212,.4); }

/* ==================== 深度思考卡片 ==================== */
.think-card {
  background: #f8fafc; border: 1px solid var(--line); border-radius: 12px;
  margin-bottom: 14px; overflow: hidden; max-width: 560px;
}
.think-head {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 14px; font-size: 13.5px; color: var(--sub);
  cursor: pointer; user-select: none; transition: background .12s;
}
.think-head:hover { background: #f2f5fa; }
.think-title { font-weight: 500; color: var(--ink-2); }
.think-time { margin-left: auto; font-size: 12px; color: var(--sub); font-variant-numeric: tabular-nums; }
.think-chev { font-size: 11px; color: var(--sub); transition: transform .2s; }
.think-card.open .think-chev { transform: rotate(90deg); }
.think-steps {
  display: none; padding: 10px 16px 14px;
  border-top: 1px dashed var(--line);
}
.think-card.open .think-steps { display: block; }
.think-card.live .think-steps { display: block; }

.step { display: flex; align-items: center; gap: 10px; padding: 4.5px 0; font-size: 13.5px; color: var(--sub); }
.step .s-ico { width: 17px; flex: none; text-align: center; font-size: 12px; }
.step.done { color: var(--ink-2); }
.step.done .s-ico { color: var(--ok); }
.step.active { color: var(--brand); font-weight: 500; }

.spinner {
  width: 14px; height: 14px; flex: none; border-radius: 50%;
  border: 2px solid rgba(59,108,212,.2); border-top-color: var(--brand);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.step .spinner { width: 11px; height: 11px; border-width: 1.6px; }

/* ==================== Markdown 渲染 ==================== */
.bubble h2, .bubble h3, .bubble h4 { color: var(--ink); margin: 18px 0 8px; line-height: 1.45; }
.bubble h2 { font-size: 18px; }
.bubble h3 { font-size: 16.5px; }
.bubble h4 { font-size: 15.5px; }
.bubble h2:first-child, .bubble h3:first-child, .bubble h4:first-child { margin-top: 4px; }
.bubble p { margin: 8px 0; }
.bubble p:first-child { margin-top: 0; }
.bubble p:last-child { margin-bottom: 0; }
.bubble strong { color: var(--ink); font-weight: 600; }
.bubble em { font-style: italic; }
.bubble del { color: var(--sub); }
.bubble a { color: var(--brand); text-decoration: none; border-bottom: 1px solid rgba(59,108,212,.35); }
.bubble a:hover { border-bottom-color: var(--brand); }
.bubble hr { border: none; border-top: 1px solid var(--line); margin: 16px 0; }

.bubble ul, .bubble ol { padding-left: 24px; margin: 8px 0; }
.bubble li { margin: 4px 0; line-height: 1.75; }
.bubble li > ul, .bubble li > ol { margin: 4px 0; }

.bubble blockquote {
  margin: 12px 0; padding: 8px 16px;
  border-left: 3px solid var(--brand); background: var(--brand-soft);
  border-radius: 0 10px 10px 0; color: var(--ink-2); font-size: 15px;
}

.bubble code {
  font-family: var(--mono); font-size: 12.5px;
  background: var(--bg-soft); border: 1px solid var(--line-soft);
  border-radius: 5px; padding: 1.5px 6px; color: #b03a5b;
}

/* 代码块(深色 + 头部 + 复制) */
.code-block { background: #0f172a; border-radius: 12px; margin: 14px 0; overflow: hidden; }
.code-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px; background: #131e36; border-bottom: 1px solid rgba(255,255,255,.06);
}
.code-head .lang { font-family: var(--mono); font-size: 11.5px; color: #8ba0c6; letter-spacing: .5px; }
.copy-btn {
  border: none; background: rgba(255,255,255,.07); color: #aab6d0;
  font-size: 11.5px; padding: 3px 10px; border-radius: 6px; cursor: pointer;
  transition: background .15s, color .15s;
}
.copy-btn:hover { background: rgba(255,255,255,.14); color: #fff; }
.copy-btn.copied { color: #5eead4; }
.code-block pre {
  padding: 14px 16px; overflow-x: auto; color: #e2e8f0;
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
}
.code-block pre code { background: none; border: none; padding: 0; color: inherit; font-size: inherit; }

/* 数据表格(重点美化) */
.table-wrap {
  overflow-x: auto; margin: 16px 0;
  border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 1px 3px rgba(16,24,40,.05);
}
.bubble table { border-collapse: collapse; width: 100%; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.bubble thead th {
  background: #f7f9fc; color: #48536e; font-weight: 600;
  text-align: left; padding: 10px 16px; white-space: nowrap;
  border-bottom: 1px solid var(--line); font-size: 13px; letter-spacing: .3px;
}
.bubble tbody td { padding: 9px 16px; border-bottom: 1px solid var(--line-soft); color: var(--ink-2); }
.bubble tbody tr:nth-child(even) { background: #fafbfd; }
.bubble tbody tr:last-child td { border-bottom: none; }
.bubble tbody tr:hover { background: #f2f6fd; }

/* ==================== 输入区 ==================== */
.composer-wrap { padding: 10px 28px 14px; background: linear-gradient(to top, #fff 70%, rgba(255,255,255,0)); }
.composer {
  max-width: 792px; margin: 0 auto;
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
  box-shadow: 0 2px 6px rgba(16,24,40,.04), 0 12px 32px rgba(16,24,40,.07);
  padding: 12px 16px 10px;
  transition: border-color .15s, box-shadow .15s;
}
.composer:focus-within { border-color: rgba(59,108,212,.55); box-shadow: 0 2px 6px rgba(16,24,40,.04), 0 0 0 3px rgba(59,108,212,.1), 0 12px 32px rgba(16,24,40,.08); }
.composer-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.role-pill {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--brand-soft); color: var(--brand);
  font-size: 12px; font-weight: 500; border-radius: 999px; padding: 3px 11px;
}
.role-desc { font-size: 11.5px; color: var(--sub); }
#input {
  width: 100%; border: none; outline: none; resize: none;
  font-size: 15px; font-family: var(--font); color: var(--ink);
  max-height: 180px; line-height: 1.65; background: transparent; display: block;
}
#input::placeholder { color: #a9afc0; }
#input:disabled { color: var(--sub); }
.composer-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; }
.composer-hint { font-size: 11px; color: #b3b9c9; }
.send-btn {
  width: 36px; height: 36px; border-radius: 50%; border: none;
  background: var(--grad); color: #fff; cursor: pointer; flex: none;
  display: flex; align-items: center; justify-content: center;
  transition: filter .15s, transform .1s;
}
.send-btn:hover { filter: brightness(1.07); }
.send-btn:active { transform: scale(.94); }
.send-btn:disabled { background: #d4d9e4; cursor: not-allowed; }
.composer-note { max-width: 792px; margin: 8px auto 0; text-align: center; font-size: 11.5px; color: #b3b9c9; }

.hidden { display: none !important; }

/* ==================== 账号管理弹窗 ==================== */
.modal-mask {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(14,21,38,.5); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
}
.modal {
  width: 600px; max-width: 94vw; max-height: 84vh; display: flex; flex-direction: column;
  background: #fff; border-radius: 16px; box-shadow: 0 24px 64px rgba(0,0,0,.3);
  animation: rise .25s ease;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 22px 12px; border-bottom: 1px solid var(--line-soft);
}
.modal-head h3 { font-size: 16px; }
.modal-x {
  border: none; background: var(--bg-soft); border-radius: 8px;
  width: 30px; height: 30px; font-size: 13px; cursor: pointer; color: var(--sub);
}
.modal-x:hover { background: #e8ebf2; color: var(--ink); }
.modal-body { padding: 16px 22px 20px; overflow-y: auto; }

.user-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.user-table th {
  text-align: left; color: var(--sub); font-size: 12px; font-weight: 500;
  padding: 6px 10px; border-bottom: 1px solid var(--line);
}
.user-table td { padding: 9px 10px; border-bottom: 1px solid var(--line-soft); color: var(--ink-2); }
.user-table tr:last-child td { border-bottom: none; }
.badge-admin {
  display: inline-block; background: var(--brand-soft); color: var(--brand);
  font-size: 11px; border-radius: 999px; padding: 2px 9px; font-weight: 500;
}
.u-ops { white-space: nowrap; }
.u-ops button {
  border: 1px solid var(--line); background: #fff; border-radius: 7px;
  font-size: 11.5px; color: var(--ink-2); padding: 3px 9px; margin-right: 5px; cursor: pointer;
  transition: border-color .12s, color .12s;
}
.u-ops button:hover { border-color: var(--brand); color: var(--brand); }
.u-ops button.danger:hover { border-color: var(--err); color: var(--err); }

.add-user { margin-top: 18px; background: var(--bg-soft); border-radius: 12px; padding: 14px 16px; }
.add-title { font-size: 12.5px; color: var(--sub); margin-bottom: 10px; letter-spacing: .5px; }
.add-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.add-row input[type="text"], .add-row input:not([type]) {
  flex: 1; min-width: 120px; padding: 9px 12px; border: 1px solid #d4d9e4;
  border-radius: 9px; font-size: 13.5px; font-family: var(--font); outline: none; background: #fff;
}
.add-row input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(59,108,212,.1); }
.ghost-btn {
  border: 1px solid var(--line); background: #fff; border-radius: 9px;
  width: 36px; height: 36px; font-size: 14px; cursor: pointer; flex: none;
}
.ghost-btn:hover { border-color: var(--brand); }
.au-admin { display: flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--ink-2); cursor: pointer; }
.primary-btn {
  border: none; background: var(--grad); color: #fff; border-radius: 9px;
  padding: 9px 18px; font-size: 13.5px; cursor: pointer; flex: none;
  transition: filter .15s;
}
.primary-btn:hover { filter: brightness(1.07); }
.au-msg { font-size: 12.5px; margin-top: 9px; min-height: 17px; color: var(--sub); word-break: break-all; }
.au-msg.ok { color: var(--ok); }
.au-msg.err { color: var(--err); }

/* 页签 */
.modal-tabs { display: flex; gap: 4px; padding: 8px 22px 0; border-bottom: 1px solid var(--line-soft); }
.mtab {
  border: none; background: none; font-size: 13.5px; color: var(--sub);
  padding: 8px 14px 10px; cursor: pointer; border-bottom: 2px solid transparent;
  font-family: var(--font); transition: color .12s, border-color .12s;
}
.mtab:hover { color: var(--ink); }
.mtab.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 500; }

/* 提问日志 */
.audit-table { font-size: 12.5px; }
.audit-table td { padding: 7px 8px; vertical-align: top; }
.nowrap { white-space: nowrap; color: var(--sub); font-size: 12px; font-variant-numeric: tabular-nums; }
.q-cell { max-width: 230px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: default; }
.st-ok { color: var(--ok); }
.st-err { color: var(--err); }

/* 消耗统计 */
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; }
.stat-card { background: var(--bg-soft); border: 1px solid var(--line-soft); border-radius: 12px; padding: 12px 14px; }
.stat-v { font-size: 20px; font-weight: 700; color: var(--ink); font-variant-numeric: tabular-nums; }
.stat-k { font-size: 11.5px; color: var(--sub); margin-top: 3px; }
.stat-roles { display: flex; flex-wrap: wrap; gap: 6px; }
.role-stat {
  background: var(--brand-soft); color: var(--brand); font-size: 12px;
  border-radius: 999px; padding: 3px 11px;
}

/* ==================== 移动端 ==================== */
@media (max-width: 760px) {
  .app { flex-direction: column; }
  .topbar {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--line);
    position: sticky; top: 0; z-index: 20;
  }
  .topbar-title { font-size: 15px; font-weight: 600; }
  .icon-btn { border: none; background: var(--bg-soft); border-radius: 8px; width: 34px; height: 34px; font-size: 15px; cursor: pointer; color: var(--ink-2); }
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 40;
    transform: translateX(-100%); transition: transform .22s ease;
    box-shadow: 12px 0 40px rgba(0,0,0,.35);
  }
  .sidebar.open { transform: none; }
  .side-mask { position: fixed; inset: 0; background: rgba(10,15,30,.45); z-index: 35; display: none; }
  .side-mask.show { display: block; }
  .msgs-inner { padding: 20px 16px 16px; }
  .composer-wrap { padding: 8px 12px 10px; }
  .sug-grid { grid-template-columns: 1fr; }
  .welcome { margin-top: 4vh; padding: 0 16px; }
  .msg { gap: 10px; }
}

/* 按钮内联小图标对齐 */
.msg-copy svg, .copy-btn svg { vertical-align: -1px; margin-right: 2px; }