@font-face {
  font-family: "BaiXiaoWordmark";
  src: url(data:font/woff2;base64,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) format("woff2");
  font-weight: 400 900;
  font-display: swap;
}

/* ============================================================
   浦城百晓书 · 聊天页布局升级样式
   依赖：/assets/theme.css（必须先引入）
   覆盖：侧栏 / 顶栏 / 消息流 / 输入区 / 出处标记 / 移动端
   ============================================================ */

/* ---------- 应用骨架 ---------- */
.app {
  display: flex;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

/* ---------- 侧栏 ---------- */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}
.sidebar-head {
  padding: var(--s-4) var(--s-4) var(--s-3);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.brand { display: flex; align-items: center; gap: var(--s-3); }
.brand-mark { width: 52px; height: 52px; flex: none; }
.brand-name {
  font-family: "BaiXiaoWordmark", "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: 17px; font-weight: 700; color: var(--brand-800);
  letter-spacing: .08em; line-height: 1.2;
}
.brand-sub { font-size: 11px; color: var(--ink-500); letter-spacing: .06em; }
.btn-new-chat {
  display: flex; align-items: center; justify-content: center; gap: var(--s-2);
  width: 100%; padding: 10px;
  background: var(--brand-600); color: var(--ink-on-brand);
  border: none; border-radius: var(--r-md);
  font-size: 14px; font-weight: 600; font-family: inherit; cursor: pointer;
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.btn-new-chat:hover { background: var(--brand-700); }

.session-list { flex: 1; overflow-y: auto; padding: var(--s-2) 0; }
.session-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px var(--s-4); cursor: pointer;
  position: relative;
  transition: background var(--dur-fast) var(--ease);
}
.session-item:hover { background: var(--surface-2); }
.session-item.active {
  background: var(--brand-050);
  /* 左侧 2px 主色圆角条 */
  box-shadow: inset 2px 0 0 var(--brand-600);
}
.session-title {
  font-size: 14px; color: var(--ink-700);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.session-item.active .session-title { color: var(--ink-900); font-weight: 500; }

/* ---------- 主区 ---------- */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.header {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  flex-shrink: 0;
}
.header-title {
  font-family: var(--font-serif);
  font-size: 16px; font-weight: 600;
  color: var(--ink-900); flex: 1; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.header-actions { display: flex; align-items: center; gap: var(--s-2); margin-left: auto; }
.icon-btn {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: var(--r-sm);
  background: none; border: none; cursor: pointer;
  color: var(--ink-700); font-size: 14px; font-family: inherit;
  transition: background var(--dur-fast) var(--ease);
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn svg { width: 20px; height: 20px; }

/* ---------- 消息流 ---------- */
.messages {
  flex: 1; overflow-y: auto;
  display: flex; flex-direction: column; gap: var(--s-4);
  padding: var(--s-5) var(--s-4);
  scroll-behavior: smooth;
}

/* 出处标记 */
.citations {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-2);
  margin-top: var(--s-3); padding-top: var(--s-2);
  border-top: 1px dashed var(--line-strong);
}
.citations-label { font-size: 12px; color: var(--ink-300); }
.citation-tag { font-size: 12px; }
/* 1125批·头号：个人库出处标注（is_personal=true 的那几条）高亮区分 */
.citation-tag.personal { color: var(--accent, #2b6cb0); font-weight: 600; }
/* 工单 v3.16.242 R 批：web 渠道出处可点击（带 url 的 citation 渲染为链接） */
.citation-tag[href] {
  color: var(--accent, #2b6cb0);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.citation-tag[href]:hover { opacity: .8; }

/* ---------- 输入区 ---------- */
.composer {
  padding: var(--s-3) var(--s-4) var(--s-2);
  border-top: 1px solid var(--line);
  background: var(--surface);
  flex-shrink: 0;
}
.composer-box {
  display: flex; align-items: flex-end; gap: var(--s-2);
}
.composer-box textarea {
  flex: 1; resize: none;
  min-height: 48px; max-height: 160px;
  padding: 12px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: var(--surface-2);
  color: var(--ink-900);
  font-size: 15px; font-family: inherit; line-height: 1.6;
  outline: none;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.composer-box textarea:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--brand-050);
}
.btn-send {
  padding: 0 22px; height: 48px;
  background: var(--brand-600); color: var(--ink-on-brand);
  border: none; border-radius: var(--r-lg);
  font-size: 15px; font-weight: 600; font-family: inherit; cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.btn-send:hover { background: var(--brand-700); }
.btn-send:disabled { opacity: .5; cursor: not-allowed; }
.composer-hint { padding: 6px 4px 4px; font-size: 12px; color: var(--ink-300); }

/* ---------- 空状态 ---------- */
.empty-mark { width: 96px; height: 96px; }
.empty-title {
  font-family: var(--font-serif);
  font-size: 26px; font-weight: 600; color: var(--ink-900);
  letter-spacing: .02em; margin: 0;
}
.empty-desc { color: var(--ink-500); font-size: 15px; margin: 0; }
.chip-row { display: flex; flex-wrap: wrap; gap: var(--s-2); justify-content: center; }
.chip {
  padding: 8px 14px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; color: var(--ink-700);
  font-size: 14px; font-family: inherit; cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.chip:hover { border-color: var(--brand-500); color: var(--brand-600); transform: translateY(-1px); }

/* ---------- 移动端底部导航 ---------- */
.bottom-nav {
  display: none;
  height: var(--bottom-nav-height);
  border-top: 1px solid var(--line);
  background: var(--surface);
  flex-shrink: 0;
}
.nav-item {
  flex: 1; display: flex; align-items: center; justify-content: center;
  background: none; border: none; cursor: pointer;
  color: var(--ink-500); font-size: 13px; font-family: inherit;
  transition: color var(--dur-fast) var(--ease);
}
.nav-item.active { color: var(--brand-600); font-weight: 600; }

/* 遮罩 */
.scrim {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(0,0,0,.4);
}
.hidden { display: none !important; }

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .app { flex-direction: column; }
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 70;
    width: 280px; min-width: 280px;
    transform: translateX(-100%);
    transition: transform var(--dur) var(--ease);
    box-shadow: var(--sh-3);
  }
  .sidebar.open { transform: translateX(0); }
  .bottom-nav { display: flex; }
  .message { max-width: 85%; }
  .header-title { font-size: 15px; }
  .composer { padding: var(--s-2) var(--s-3) var(--s-2); }
  .composer-box textarea { min-height: 44px; }
  .btn-send { height: 44px; }
}

/* ================= 小白 · 空态 ================= */
.bx-hero { position: relative; display: flex; flex-direction: column; align-items: center; }
.bx-hero-glow {
  position: absolute; left: 50%; top: 6px; transform: translateX(-50%);
  width: 190px; height: 190px; border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--brand-050) 0%, transparent 68%);
  pointer-events: none;
}
.bx-hero-img {
  position: relative; height: 172px; width: auto; display: block;
  filter: drop-shadow(0 10px 22px rgba(47,107,94,.16));
  animation: bxFloat 5.5s var(--ease-in-out, ease-in-out) infinite;
}
@keyframes bxFloat {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-7px); }
}
.bx-hero-cap {
  margin-top: -6px; font-size: 12px; color: var(--ink-300);
  letter-spacing: .16em;
}
.bx-hero-cap b { color: var(--accent-600, #C08A4A); font-weight: 600; }

/* ================= 小白 · 侧栏引导卡 ================= */
.bx-card {
  flex: none; margin: 0 var(--s-3) var(--s-3);
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-3);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--brand-050) 0%, var(--surface) 100%);
  box-shadow: var(--sh-1);
}
.bx-card-img { width: 46px; height: 46px; flex: none; border-radius: 50%;
  object-fit: cover; background: var(--surface); box-shadow: 0 2px 6px rgba(47,107,94,.14); }
.bx-card-body { flex: 1; min-width: 0; }
.bx-card-name { font-size: 13px; font-weight: 600; color: var(--ink-900);
  font-family: var(--font-serif); letter-spacing: .02em; }
.bx-card-desc { font-size: 11.5px; color: var(--ink-500); line-height: 1.55; margin-top: 2px; }
.bx-card-btn {
  flex: none; padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--brand-500); background: transparent;
  color: var(--brand-600); font-size: 12px; font-family: inherit; cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.bx-card-btn:hover { background: var(--brand-600); color: var(--ink-on-brand); }
@media (prefers-reduced-motion: reduce) { .bx-hero-img { animation: none; } }

/* ================= 空态山水 · 尺寸回调 ================= */
.empty-mark { width: 108px; height: 108px; }
.scape-wrap { position: relative; display: inline-flex; margin-bottom: 2px; }
.scape-glow {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 112px; height: 112px; border-radius: 50%;
  background: radial-gradient(circle, var(--brand-100) 0%, transparent 68%);
  opacity: .85; pointer-events: none;
}
.scape-cap {
  font-size: 12.5px; letter-spacing: .16em; color: var(--ink-500);
  margin: 10px 0 14px; text-align: center;
}

/* ================= 侧栏折叠 / 展开 ================= */
.btn-collapse {
  margin-left: auto; flex: none;
  width: 28px; height: 28px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); background: var(--surface-2);
  color: var(--ink-500); cursor: pointer; transition: all .18s var(--ease);
}
.btn-collapse:hover { background: var(--brand-050); color: var(--brand-700); border-color: var(--brand-200); }
.btn-collapse svg { width: 16px; height: 16px; transition: transform .22s var(--ease); }

/* 桌面端：折叠时侧栏滑出，主区占满 */
@media (min-width: 769px) {
  .sidebar { transition: margin-left var(--dur) var(--ease); }
  body.sb-collapsed .sidebar { margin-left: calc(-1 * var(--sidebar-width)); }
  body.sb-collapsed #btnMenu { display: inline-flex !important; }
  body:not(.sb-collapsed) #btnMenu { display: none; }
}
@media (max-width: 768px) {
  .btn-collapse { display: none; }
}

/* ================= 游客模式状态条 ================= */
.guest-bar {
  display: flex; align-items: center; gap: 10px;
  margin: 0 auto; padding: 8px 14px;
  max-width: 880px; width: calc(100% - 32px);
  border-radius: 999px;
  background: var(--brand-050);
  border: 1px solid var(--brand-100);
  color: var(--ink-600); font-size: 12.5px;
}
.guest-bar-icon { width: 18px; height: 18px; color: var(--brand-600); flex: none; }
.guest-bar-text { flex: 1; min-width: 0; }
.guest-bar-text b { color: var(--brand-700); font-weight: 600; }
.guest-bar-btn {
  flex: none; padding: 5px 12px; border-radius: 999px; border: 0;
  background: var(--brand-600); color: #fff; font-size: 12px; cursor: pointer;
  font-family: inherit; white-space: nowrap;
}
.guest-bar-btn:hover { background: var(--brand-700); }
body:not(.is-guest) .guest-bar { display: none; }


/* ===== 顶栏联动：侧栏可见→显示收起按钮+会话标题；侧栏隐藏→显示 logo+站名 ===== */
.header-brand {
  display: none; align-items: center; gap: 9px;
  cursor: pointer; user-select: none;
  padding: 5px 12px 5px 6px; border-radius: 999px;
  transition: background .18s;
}
.header-brand:hover { background: var(--brand-50, rgba(47,107,94,.07)); }
.header-brand-mark { width: 28px; height: 28px; flex: none; display: block; }
.header-brand-name {
  font-family: "BaiXiaoWordmark", "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: 15.5px; font-weight: 700; color: var(--brand-800);
  letter-spacing: .08em; white-space: nowrap;
}
.btn-collapse-top {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; flex: none;
  border: 1px solid var(--line, rgba(47,107,94,.16));
  border-radius: 10px; background: var(--surface, #fff);
  color: var(--brand-700); font-size: 15px; line-height: 1; cursor: pointer;
  transition: background .18s, border-color .18s;
}
.btn-collapse-top:hover { background: var(--brand-50, rgba(47,107,94,.07)); border-color: var(--brand-300); }
body:not(.sb-collapsed):not(.is-guest) .header-brand { display: none; }
body.sb-collapsed .header-brand,
body.is-guest .header-brand { display: inline-flex; }
body.sb-collapsed .header-title,
body.is-guest .header-title { display: none; }
body.sb-collapsed .btn-collapse-top,
body.is-guest .btn-collapse-top { display: none; }

/* ===== 小白卡片：全身立绘 ===== */
.bx-card { align-items: flex-start; }
.bx-avatar-wrap { flex: none; }
.bx-card-avatar {
  width: 58px; height: 58px; border-radius: 14px;
  background: linear-gradient(160deg, #EEF3F0, #E2EAE6);
  border: 1px solid rgba(47,107,94,.14);
  object-fit: contain; padding: 3px;
}

/* 桌面收起态：顶部品牌区可点击展开，隐藏汉堡避免重复 */
@media (min-width: 769px) {
  body.sb-collapsed #btnMenu { display: none !important; }
}