:root {
  --green: #5ea882;
  --green-deep: #3f8b66;
  --green-soft: color-mix(in srgb, #5ea882 14%, transparent);
  --purple: #6d7c9a;
  --purple-deep: #55627a;
  --purple-soft: color-mix(in srgb, #6d7c9a 14%, transparent);
  --yellow: #c8b06a;
  --yellow-soft: color-mix(in srgb, #c8b06a 16%, transparent);
  --bg: #eef2ef;
  --surface: color-mix(in srgb, #ffffff 48%, transparent);
  --surface-solid: #ffffff;
  --surface-soft: color-mix(in srgb, #ffffff 30%, transparent);
  --text: #33403a;
  --muted: #7d8882;
  --border: color-mix(in srgb, #5b6a62 18%, transparent);
  --accent: var(--green);
  --accent-soft: var(--green-soft);
  --ok: #3f8b66;
  --ok-soft: var(--green-soft);
  --warning: #9a7d32;
  --warning-soft: var(--yellow-soft);
  --danger: #d06a6a;
  --danger-soft: color-mix(in srgb, #d06a6a 16%, transparent);
  --shadow: 0 8px 28px rgba(50, 70, 60, 0.06);
  --radius: 18px;
  --glass: blur(18px) saturate(1.12);

  /* 图标位置：改这些即可微调（正数向右/向下） */
  --logo-size: 32px;
  --logo-radius: 0px;
  --logo-nudge-x: 0px;
  --logo-nudge-y: 0px;
  --logo-title-gap: 8px;
  --intro-logo-size: 48px;
  --intro-logo-nudge-x: 0px;
  --intro-logo-nudge-y: 0px;
  --login-logo-size: 44px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(720px 380px at 12% -10%, color-mix(in srgb, var(--green) 5%, transparent), transparent 70%),
    radial-gradient(640px 360px at 100% 0%, color-mix(in srgb, var(--purple) 4%, transparent), transparent 68%),
    var(--bg);
}

button, input, textarea, select { font: inherit; }

a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.card {
  width: min(440px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 28px 24px;
  backdrop-filter: var(--glass);
}

.brand-mark {
  width: var(--login-logo-size);
  height: var(--login-logo-size);
  border-radius: 0;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  object-fit: contain;
  background: none;
}

.brand-kicker {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.brand {
  margin: 0 0 8px;
  font-size: 26px;
}

.lead {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--surface-soft);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 18px;
}

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}

.tab.is-active {
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  box-shadow: 0 1px 0 color-mix(in srgb, var(--green) 35%, transparent);
}

label { display: block; margin-bottom: 12px; }
label span {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--muted);
}

.field-row { position: relative; }

input, textarea, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  background: var(--surface);
  color: var(--text);
}

input:focus, textarea:focus, select:focus {
  outline: 2px solid color-mix(in srgb, var(--green) 30%, transparent);
  border-color: var(--green);
}

.toggle-pass {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 4px 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 0;
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  transition: transform 0.12s ease, background 0.12s ease;
}

.btn:hover { background: var(--green-deep); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.38; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; }
.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--green-soft); }
.btn-ok { background: var(--green); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #c85f5f; }
.btn-purple { background: var(--purple); }
.btn-purple:hover { background: var(--purple-deep); }
.btn-sm { padding: 6px 10px; font-size: 13px; font-weight: 600; }
.btn-stop { background: var(--purple); }
.btn-send { min-width: 72px; }

.alert {
  display: none;
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
}
.alert.show { display: block; }
.alert-error { background: var(--danger-soft); color: var(--danger); }
.alert-ok { background: var(--ok-soft); color: var(--ok); }
.alert-warn { background: var(--warning-soft); color: var(--warning); }

.app-header {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: var(--glass);
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.header-left { gap: var(--logo-title-gap); }
.header-right { gap: 8px; }

.header-title { margin: 0; font-size: 16px; }
.header-logo {
  width: var(--logo-size);
  height: var(--logo-size);
  margin: 0;
  border-radius: var(--logo-radius);
  object-fit: contain;
  transform: translate(var(--logo-nudge-x), var(--logo-nudge-y));
  background: none;
}
.header-icon,
.more-btn { display: none; }
.sidebar-close { display: grid; place-items: center; }
.header-right { position: relative; }
.header-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--green-soft);
  color: #4b8f6a;
}
.chip-warn { background: var(--yellow-soft); color: var(--warning); }
.chip-ok { background: var(--green-soft); color: #4b8f6a; }
.chip-muted { background: var(--purple-soft); color: #6f66b8; }

.chat-app {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  min-height: 100vh;
  min-height: 100dvh;
  height: var(--app-height, 100dvh);
  overflow: hidden;
}
/* 首帧后才开启过渡，避免读取折叠状态时出现展开动画 */
.chat-app.anim-ready { transition: grid-template-columns 0.18s ease; }

/* 桌面端左侧历史可折叠（移动端为抽屉，另有规则，勿套用） */
@media (min-width: 861px) {
  .chat-app.sidebar-collapsed { grid-template-columns: 0 minmax(0, 1fr); }
  .chat-app.sidebar-collapsed .sidebar {
    overflow: hidden;
    border-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat-app.anim-ready { transition: none; }
}

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  background: var(--surface);
  border-right: 1px solid var(--border);
  backdrop-filter: var(--glass);
}

.sidebar-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 12px 10px;
  border-bottom: 1px solid var(--border);
}
.sidebar-top .btn-block { flex: 1; }

.conv-list {
  flex: 1;
  overflow: auto;
  padding: 8px;
}

.conv-empty {
  margin: 24px 8px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.conv-item {
  display: flex;
  align-items: stretch;
  gap: 2px;
  margin-bottom: 4px;
  border-radius: 12px;
}

.conv-item.active {
  background: var(--green-soft);
}

.conv-item:hover {
  background: color-mix(in srgb, var(--purple-soft) 70%, transparent);
}

.conv-main {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  text-align: left;
  padding: 9px 10px;
  cursor: pointer;
  border-radius: 12px;
}

.conv-title {
  display: block;
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-time {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  color: var(--muted);
}

.conv-actions {
  display: none;
  flex-direction: column;
  justify-content: center;
  padding-right: 4px;
}

.conv-item:hover .conv-actions,
.conv-item.active .conv-actions {
  display: flex;
}

.chat-shell {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
}

.menu-btn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  font-size: 18px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.sidebar-backdrop {
  display: none;
}

.chat-layout {
  flex: 1;
  min-height: 0;
  height: calc(100vh - 60px);
  display: grid;
  grid-template-rows: 1fr auto;
}
.chat-shell .chat-layout { height: auto; }

.messages {
  overflow: auto;
  padding: 20px 16px 12px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.msg-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  max-width: min(100%, 760px);
}

.msg-row-user { align-self: flex-end; flex-direction: row-reverse; }
.msg-row-assistant { align-self: flex-start; }

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  flex: 0 0 auto;
}
.avatar-user { background: var(--green); color: #fff; }
.avatar-bot {
  background: url("./favicon.svg?v=20260817w") center / contain no-repeat;
  color: transparent;
  font-size: 0;
}

.msg {
  padding: 12px 14px;
  border-radius: 16px;
  line-height: 1.65;
  word-break: break-word;
}

.msg-body { white-space: pre-wrap; }
.msg-user {
  background: var(--green-soft);
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--green) 22%, var(--border));
  border-top-right-radius: 6px;
}
.msg-assistant {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top-left-radius: 6px;
  box-shadow: none;
  backdrop-filter: var(--glass);
}
.msg-user .msg-meta,
.msg-user .icon-btn { color: var(--muted); }
.msg-meta { font-size: 11px; color: var(--muted); margin-top: 8px; }
.msg-toolbar { display: flex; gap: 4px; margin-top: 8px; }

/* 桌面端悬停/聚焦才显示工具条（参考 Gemini）；触屏无 hover，保持常驻 */
@media (hover: hover) {
  .msg-toolbar {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
  }
  .msg-row:hover .msg-toolbar,
  .msg-row:focus-within .msg-toolbar {
    opacity: 1;
    pointer-events: auto;
  }
}

.icon-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 8px;
}
.icon-btn:hover { background: var(--green-soft); color: var(--text); }

.think-block {
  margin: 0 0 10px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
}
.think-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
}
.think-toggle.is-live .think-label {
  background: linear-gradient(90deg, #9b8ef2, #6fbf93, #9b8ef2);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: think-shimmer 1.8s linear infinite;
}
@keyframes think-shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
.think-body {
  padding: 0 12px 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
  white-space: pre-wrap;
  max-height: 220px;
  overflow: auto;
}
/* 思考流式输出时固定高度、内部自滚，避免气泡持续变高把上方内容顶走 */
.think-block.is-live .think-body {
  height: 120px;
  max-height: 120px;
  overscroll-behavior: contain;
}
.think-block.is-collapsed .think-body { display: none; }

.composer-tools,
.composer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.think-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
}
.think-chip:hover { border-color: var(--purple); color: var(--text); }
.think-chip.is-on {
  background: var(--purple-soft);
  border-color: color-mix(in srgb, var(--purple) 50%, var(--border));
  color: #6f66b8;
  font-weight: 650;
}
.think-chip:disabled { opacity: 0.45; cursor: not-allowed; }
.think-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
}
.think-chip.is-on .think-dot {
  background: var(--purple);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--purple) 18%, transparent);
}

.typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  height: 16px;
}
.typing i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple);
  animation: bounce 1s infinite;
}
.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-4px); opacity: 1; }
}

.empty-hint {
  max-width: 840px;
  margin: 36px auto 0;
  text-align: center;
  color: var(--muted);
}

.empty-title {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 22px;
}

.assistant-intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.assistant-intro-avatar {
  width: var(--intro-logo-size);
  height: var(--intro-logo-size);
  border-radius: 16px;
  transform: translate(var(--intro-logo-nudge-x), var(--intro-logo-nudge-y));
}

.assistant-intro-desc {
  margin: 0;
  max-width: 520px;
  line-height: 1.6;
}

.empty-sub {
  margin: 0 0 4px;
}

.intro-fold {
  display: none;
  margin: 0 auto 4px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
  padding: 2px 8px;
}

.suggest-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 20px;
  text-align: left;
}

.suggest {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 14px;
  padding: 12px 14px;
  cursor: pointer;
  color: var(--text);
  transition: border-color 0.12s ease, transform 0.12s ease;
  backdrop-filter: var(--glass);
}
.suggest:hover {
  border-color: var(--purple);
  transform: translateY(-1px);
}
.suggest b { display: block; font-size: 13px; margin-bottom: 4px; }
.suggest span { color: var(--muted); font-size: 12px; }

.composer {
  background: transparent;
  padding: 4px 16px 12px;
}

.composer-inner {
  max-width: 840px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 5px 8px;
  backdrop-filter: var(--glass);
}

.composer textarea {
  min-height: 32px;
  /* 矮屏时不让输入框吃掉过多可视区域 */
  max-height: min(180px, 32vh);
  line-height: 21px;
  resize: none;
  border: 0;
  padding: 5px 10px;
  outline: none;
  box-shadow: none;
  background: transparent;
}
.composer textarea:focus { outline: none; border-color: transparent; }

.composer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 4px;
}

.composer-bar .think-chip { padding: 4px 11px; font-size: 12.5px; }

.composer-bar .btn-send {
  min-width: 64px;
  padding: 6px 14px;
  font-size: 13.5px;
}

.composer-bar select {
  width: auto;
  min-width: 88px;
  background: var(--surface-soft);
  border-color: transparent;
  color: var(--muted);
  font-size: 13px;
  padding: 5px 9px;
}

.char-count { font-size: 12px; color: var(--muted); }

.tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 999px;
  padding: 4px 11px;
  color: var(--muted);
  cursor: pointer;
  font-size: 12.5px;
}
.tool-chip:hover { border-color: var(--purple); color: var(--text); }
.tool-chip span { font-size: 15px; line-height: 1; }
.tool-chip:disabled { opacity: 0.45; cursor: not-allowed; }

.attach-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px 6px 2px;
}
/* 需显式覆盖：作者样式的 display 会盖过 [hidden] 的 UA 规则 */
.attach-preview[hidden] { display: none; }
.attach-thumb {
  position: relative;
  width: 62px;
  height: 62px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface-soft);
}
.attach-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.attach-remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  border: 0;
  border-radius: 50%;
  background: rgba(20, 28, 24, 0.6);
  color: #fff;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.attach-remove:hover { background: rgba(20, 28, 24, 0.85); }

.composer-inner.dragging {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}

.msg-images {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}
.msg-images a { display: block; line-height: 0; }
.msg-images img {
  max-width: 220px;
  max-height: 220px;
  border-radius: 10px;
  border: 1px solid var(--border);
  object-fit: cover;
}
.msg-body.is-empty { display: none; }

.jump-bottom {
  position: absolute;
  right: 24px;
  bottom: 76px;
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.jump-bottom.show { display: grid; place-items: center; }

.chat-wrap {
  position: relative;
  height: 100%;
  min-height: 0;
}

.chat-wrap .messages {
  height: 100%;
}

.admin-wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 16px;
}
.stat b { display: block; font-size: 22px; }
.stat span { color: var(--muted); font-size: 12px; }
.stat-pending { box-shadow: inset 4px 0 0 var(--yellow); }
.stat-active { box-shadow: inset 4px 0 0 var(--green); }
.stat-disabled { box-shadow: inset 4px 0 0 var(--purple); }

.admin-toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.admin-toolbar input { max-width: 240px; }

.table-wrap {
  overflow: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
th { color: var(--muted); font-weight: 700; font-size: 12px; }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: color-mix(in srgb, var(--yellow-soft) 45%, transparent); }
.actions { display: flex; gap: 6px; }
.hidden { display: none !important; }

@media (max-width: 860px) {
  .chat-app { grid-template-columns: 1fr; }
  .menu-btn,
  .header-icon,
  .more-btn,
  .sidebar-close {
    display: grid;
    place-items: center;
  }
  .app-header {
    position: sticky;
    top: 0;
    z-index: 20;
    min-height: 48px;
    padding: 6px 10px;
    padding-top: max(6px, env(safe-area-inset-top));
    flex-wrap: nowrap;
    align-items: center;
  }
  .header-left,
  .header-right {
    flex-wrap: nowrap;
    gap: 6px;
  }
  #provider-chip { display: none; }
  .header-title {
    font-size: 15px;
    max-width: 42vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .header-icon,
  .more-btn,
  .menu-btn {
    width: 36px;
    height: 36px;
    font-size: 18px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 10px;
    flex: 0 0 auto;
  }
  .header-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    z-index: 40;
    min-width: 168px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
  }
  .header-menu.open { display: flex; }
  .header-menu .chip,
  .header-menu .btn {
    width: 100%;
    justify-content: flex-start;
  }
  .sidebar {
    position: fixed;
    z-index: 30;
    left: 0;
    top: 0;
    width: min(280px, 86vw);
    height: 100dvh;
    padding-top: env(safe-area-inset-top);
    transform: translateX(-105%);
    transition: transform 0.18s ease;
    box-shadow: var(--shadow);
  }
  .sidebar.open { transform: none; }
  .sidebar-backdrop.show {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 25;
    background: rgba(20, 28, 24, 0.28);
  }
  .composer {
    padding: 6px 12px max(8px, env(safe-area-inset-bottom));
  }
  .composer textarea { font-size: 16px; }
  .char-count { display: none; }
  .intro-fold { display: inline-flex; }
  .empty-hint.is-folded .assistant-intro-desc,
  .empty-hint.is-folded .empty-sub { display: none; }
  .empty-hint.is-folded .assistant-intro-avatar {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }
  .empty-hint.is-folded .empty-title { font-size: 18px; margin-bottom: 0; }
  .empty-hint { margin-top: 12px; }
  .assistant-intro-avatar { width: 40px; height: 40px; border-radius: 14px; }
  .empty-title { font-size: 20px; }
  .conv-item .conv-actions { display: flex; }
  .jump-bottom { right: 16px; bottom: 72px; }
}

@media (max-width: 720px) {
  .suggest-grid, .stat-row { grid-template-columns: 1fr; }
  .suggest { padding: 10px 12px; }
  .composer-bar { flex-wrap: wrap; }
}