/* =====================================================================
 * 郭氏堂·颈肩腰腿养护智库 —— 大健康风格样式
 * 配色：墨绿 #2d5f3f / 茶色 #c8a878 / 米黄 #f4ecd8 / 印章红 #8b3a2f
 * ===================================================================*/

:root {
  --primary: #2d5f3f;
  --primary-dark: #1f4429;
  --primary-light: #4a7e5a;
  --accent: #c8a878;
  --accent-light: #e0c79a;
  --paper: #faf6ed;
  --paper-deep: #f4ecd8;
  --card: #ffffff;
  --ink: #2c3e2d;
  --ink-soft: #5a6b5d;
  --border: #d4c5a0;
  --seal: #8b3a2f;
  --warn: #c87f3a;
  --danger: #b54a3a;
  --shadow: 0 4px 20px rgba(45, 95, 63, 0.08);
  --shadow-hover: 0 8px 28px rgba(45, 95, 63, 0.15);
  --radius: 10px;
  --radius-lg: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  font-size: 14.5px;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 5% 10%, rgba(200, 168, 120, 0.08) 0%, transparent 30%),
    radial-gradient(circle at 95% 90%, rgba(45, 95, 63, 0.05) 0%, transparent 35%);
  background-attachment: fixed;
}

/* ========== 顶部品牌栏 ========== */
.brand-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #f4ecd8;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: 0 2px 12px rgba(31, 68, 41, 0.25);
  position: relative;
  overflow: hidden;
}

.brand-bar::before {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 280px;
  background-image: radial-gradient(circle at 20% 50%, rgba(200, 168, 120, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.brand-logo {
  height: 56px;
  width: auto;
  max-width: 260px;
  object-fit: contain;
  border-radius: 6px;
  background: #fff;
  padding: 2px 6px;
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}
.brand-divider {
  width: 1px;
  height: 52px;
  background: linear-gradient(180deg, transparent 0%, var(--accent-light) 50%, transparent 100%);
  opacity: 0.55;
  flex-shrink: 0;
}

.brand-text h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 2px;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
}
.brand-text .sub {
  font-size: 12.5px;
  color: var(--accent-light);
  letter-spacing: 0.5px;
}

.brand-bar .right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 12.5px;
  color: var(--accent-light);
  z-index: 1;
}
.brand-bar .right .badge {
  padding: 4px 10px;
  background: rgba(244, 236, 216, 0.15);
  border: 1px solid rgba(244, 236, 216, 0.3);
  border-radius: 20px;
}
.brand-bar .right .hot {
  background: var(--seal);
  color: #faf6ed;
  border-color: var(--seal);
}

/* ========== 搜索区 ========== */
.search-zone {
  background: var(--card);
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--paper-deep);
  border: 2px solid var(--border);
  border-radius: 28px;
  padding: 4px 4px 4px 22px;
  transition: all 0.2s;
  max-width: 760px;
  margin: 0 auto;
}
.search-box:focus-within {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 4px 16px rgba(45, 95, 63, 0.12);
}
.search-box .icon { color: var(--primary); font-size: 18px; margin-right: 10px; }
.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 15px;
  outline: none;
  color: var(--ink);
  padding: 10px 8px;
  font-family: inherit;
}
.search-box input::placeholder { color: var(--ink-soft); }
.search-box .btn {
  background: var(--primary);
  color: #f4ecd8;
  border: none;
  padding: 10px 22px;
  border-radius: 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.search-box .btn:hover { background: var(--primary-dark); }

/* 搜索栏截图 OCR 按钮 */
.search-box .ocr-btn {
  background: transparent;
  border: 1.5px dashed var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  min-width: 38px;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  margin-right: 8px;
  margin-left: 4px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.search-box .ocr-btn:hover {
  border-color: var(--primary);
  background: var(--paper-deep);
  transform: scale(1.08);
}
.search-box .ocr-btn:active { transform: scale(0.95); }

/* 搜索栏 OCR 进度状态条 */
.search-ocr-status {
  max-width: 760px;
  margin: 8px auto 0;
  text-align: center;
  font-size: 12.5px;
  color: var(--accent);
}

.search-hints {
  max-width: 760px;
  margin: 12px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 12.5px;
  color: var(--ink-soft);
}
.search-hints .hint {
  padding: 4px 10px;
  background: var(--paper-deep);
  border-radius: 14px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}
.search-hints .hint:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #fff;
}

/* ========== 主体三栏 ========== */
.main {
  display: grid;
  grid-template-columns: 280px 1fr 320px;
  gap: 20px;
  padding: 20px 32px 60px;
  max-width: 1600px;
  margin: 0 auto;
}

@media (max-width: 1280px) {
  .main { grid-template-columns: 240px 1fr; }
  .right-panel { display: none; }
}
@media (max-width: 880px) {
  .main { grid-template-columns: 1fr; padding: 16px; }
  .left-panel { order: 2; }
  .center-panel { order: 1; }
  .brand-bar { padding: 14px 18px; gap: 12px; }
  .brand-bar .right { display: none; }
  .search-zone { padding: 16px; }
}

/* ========== 左栏：知识库导航 ========== */
.left-panel {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  align-self: start;
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
}

.left-panel h3 {
  font-size: 13px;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--paper-deep);
  display: flex;
  align-items: center;
  gap: 6px;
}
.left-panel h3::before {
  content: "";
  width: 4px; height: 14px;
  background: var(--seal);
  border-radius: 2px;
}

.cat-list { list-style: none; }
.cat-list li {
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--ink);
}
.cat-list li:hover {
  background: var(--paper-deep);
  color: var(--primary);
}
.cat-list li.active {
  background: var(--primary);
  color: #f4ecd8;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(45, 95, 63, 0.25);
}
.cat-list li .ico { font-size: 16px; }
.cat-list li .count {
  margin-left: auto;
  font-size: 11px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  padding: 1px 8px;
  border-radius: 10px;
}
.cat-list li.active .count {
  background: rgba(244, 236, 216, 0.2);
  color: #f4ecd8;
}

/* ========== 中栏：内容展示 ========== */
.center-panel { min-width: 0; }

.welcome-card {
  background: linear-gradient(135deg, #faf6ed 0%, #f4ecd8 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 18px;
  position: relative;
  overflow: hidden;
}
.welcome-card::before {
  content: "问";
  position: absolute;
  right: -20px; top: -30px;
  font-size: 180px;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  color: rgba(45, 95, 63, 0.06);
  font-weight: 700;
}
.welcome-card h2 {
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 8px;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  letter-spacing: 1px;
}
.welcome-card p { color: var(--ink-soft); font-size: 13.5px; max-width: 600px; }
.welcome-card .stats {
  display: flex;
  gap: 28px;
  margin-top: 16px;
  position: relative;
}
.welcome-card .stat {
  font-size: 12px;
  color: var(--ink-soft);
}
.welcome-card .stat strong {
  display: block;
  color: var(--primary);
  font-size: 22px;
  font-weight: 700;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
}

.cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 8px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--paper-deep);
}
.cat-header .ico {
  width: 40px; height: 40px;
  background: var(--primary);
  color: #f4ecd8;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.cat-header h2 {
  font-size: 18px;
  color: var(--primary);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  letter-spacing: 1px;
}
.cat-header .desc { font-size: 12.5px; color: var(--ink-soft); }

/* 教学培训板块分组分隔标题 */
.group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  letter-spacing: 1px;
}
.group-header:first-child { margin-top: 4px; }
.group-bar {
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(var(--seal), #6e2d24);
}

.item-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 14px;
  transition: all 0.2s;
  cursor: pointer;
}
.item-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.item-card h3 {
  font-size: 16px;
  color: var(--primary-dark);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.item-card .tag {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--paper-deep);
  color: var(--primary);
  border-radius: 10px;
  font-weight: 500;
}
.item-card .tag.warn { background: #fcecd9; color: var(--warn); }
.item-card .tag.danger { background: #f7d9d4; color: var(--danger); }
.item-card .tag.seal { background: var(--seal); color: #faf6ed; }

.item-card .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 8px;
}
.item-card .field { font-size: 13.5px; line-height: 1.75; }
.item-card .field .label {
  color: var(--accent);
  font-weight: 600;
  margin-right: 4px;
  font-size: 12.5px;
}
.item-card .field .label::before {
  content: "·";
  color: var(--seal);
  margin-right: 4px;
}
.item-card .store-tip {
  margin-top: 10px;
  padding: 8px 12px;
  background: linear-gradient(90deg, var(--paper-deep) 0%, transparent 100%);
  border-left: 3px solid var(--seal);
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  color: var(--ink);
}
.item-card .store-tip .label {
  color: var(--seal);
  font-weight: 600;
  margin-right: 4px;
}

.qa-card { padding: 14px 18px; }
.qa-card .q {
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 6px;
  font-size: 14.5px;
}
.qa-card .q::before { content: "问："; color: var(--seal); margin-right: 4px; }
.qa-card .a { color: var(--ink); font-size: 13.5px; line-height: 1.75; padding-left: 28px; position: relative; }
.qa-card .a::before { content: "答："; color: var(--primary); font-weight: 600; position: absolute; left: 0; }

/* ========== 右栏：快速入口 ========== */
.right-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.side-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.side-card h4 {
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--border);
  display: flex; align-items: center; gap: 6px;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
}
.side-card h4::before {
  content: "";
  width: 3px; height: 12px;
  background: var(--accent);
  border-radius: 2px;
}

.quick-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  color: var(--ink);
  transition: all 0.15s;
  margin-bottom: 2px;
}
.quick-link:hover {
  background: var(--paper-deep);
  color: var(--primary);
}
.quick-link .qico { font-size: 14px; }

.product-card {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--paper-deep);
  font-size: 12.5px;
  cursor: pointer;
}
.product-card:last-child { border-bottom: none; }
.product-card:hover .pname { color: var(--primary); }
.product-card .pname {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  font-size: 13.5px;
}
.product-card .pdesc { color: var(--ink-soft); line-height: 1.6; }

.brand-info {
  font-size: 12px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.brand-info strong { color: var(--primary); }
.brand-info .row { display: flex; gap: 4px; margin-bottom: 4px; }
.brand-info .row .k { flex-shrink: 0; min-width: 56px; color: var(--ink); }

/* ========== 搜索结果高亮 ========== */
mark {
  background: linear-gradient(transparent 60%, rgba(200, 168, 120, 0.5) 60%);
  color: var(--primary-dark);
  font-weight: 600;
  padding: 0 2px;
}

.no-result {
  text-align: center;
  padding: 60px 20px;
  color: var(--ink-soft);
}
.no-result .icon { font-size: 48px; opacity: 0.4; margin-bottom: 12px; }

.empty-cat {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-soft);
  font-size: 13px;
}

/* ========== 滚动条 ========== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: var(--accent-light); border-radius: 3px; }
::-webkit-scrollbar-track { background: transparent; }

/* ========== 智能问询助手浮窗 ========== */
.bot-fab {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 58px;
  height: 58px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 22px rgba(31, 68, 41, 0.35);
  z-index: 50;
  transition: transform 0.2s;
}
.bot-fab:hover { transform: scale(1.06); }
.bot-fab .bot-fab-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(244, 236, 216, 0.9);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}
.bot-fab .bot-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--primary);
  animation: botPulse 2s infinite;
}
@keyframes botPulse {
  0% { transform: scale(1); opacity: 0.7; }
  70% { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(1.5); opacity: 0; }
}

.bot-panel {
  position: fixed;
  right: 26px;
  bottom: 96px;
  width: 360px;
  max-width: calc(100vw - 32px);
  height: 540px;
  max-height: calc(100vh - 130px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(31, 68, 41, 0.22);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 51;
  animation: botIn 0.22s ease;
}
@keyframes botIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.bot-head {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #f4ecd8;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.bot-title { font-size: 14.5px; font-weight: 600; font-family: "STKaiti", "KaiTi", "Songti SC", serif; letter-spacing: 0.5px; }
.bot-id { display: flex; align-items: center; gap: 10px; }
.bot-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(244, 236, 216, 0.85);
}
/* 问答首条问候（带头像） */
.bot-greet { display: flex; align-items: flex-start; gap: 10px; }
.bot-greet-avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; border: 2px solid var(--primary); }
.bot-greet-body { flex: 1; }
.bot-close {
  background: rgba(244, 236, 216, 0.18);
  border: none;
  color: #f4ecd8;
  width: 26px; height: 26px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
}
.bot-close:hover { background: rgba(244, 236, 216, 0.32); }

.bot-msgs {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.bot-msg { max-width: 88%; font-size: 13px; line-height: 1.7; }
.bot-msg.user {
  align-self: flex-end;
  background: var(--primary);
  color: #f4ecd8;
  padding: 8px 12px;
  border-radius: 12px 12px 2px 12px;
}
.bot-msg.bot {
  align-self: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 12px 12px 12px 2px;
  color: var(--ink);
}
.bot-msg.bot .b-hello { color: var(--primary); font-weight: 600; margin-bottom: 4px; }
.bot-ans {
  border-left: 3px solid var(--seal);
  background: linear-gradient(90deg, var(--paper-deep) 0%, transparent 100%);
  padding: 6px 10px;
  margin-top: 6px;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
}
.bot-ans:hover { background: var(--paper-deep); }
.bot-ans .ans-cat { font-size: 11px; color: var(--accent); font-weight: 600; }
.bot-ans .ans-title { font-size: 13px; color: var(--primary-dark); font-weight: 600; margin: 1px 0 3px; font-family: "STKaiti", "KaiTi", "Songti SC", serif; }
.bot-ans .ans-body { font-size: 12.5px; color: var(--ink); line-height: 1.65; }
.bot-ans .ans-more { font-size: 11px; color: var(--primary); margin-top: 3px; }

/* 答案卡内的配图 / 视频（文字 + 图片 + 视频 三位一体） */
.ans-media { margin: 7px 0 2px; }
.ans-media img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  display: block;
}
.ans-media.ans-video { background: var(--paper-deep); border-radius: 8px; padding: 8px; border: 1px solid var(--border); }
.ans-media-cap { font-size: 11px; color: var(--seal); font-weight: 600; margin-bottom: 4px; }
.ans-media video {
  width: 100%;
  border-radius: 6px;
  background: #000;
  display: block;
}
/* 分类详情里的配图/视频 */
.item-card .ans-media img { max-height: 320px; }
.item-card .ans-media.ans-video { margin-top: 10px; }

.bot-suggest {
  padding: 8px 14px;
  border-top: 1px dashed var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  background: var(--card);
}
.bot-suggest .s-lbl { font-size: 11.5px; color: var(--ink-soft); }
.bot-suggest .bchip {
  font-size: 11.5px;
  padding: 3px 9px;
  background: var(--paper-deep);
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  color: var(--ink);
  transition: all 0.15s;
}
.bot-suggest .bchip:hover { border-color: var(--primary); color: var(--primary); background: #fff; }

.bot-input-row {
  display: flex;
  gap: 8px;
  padding: 10px 14px 14px;
  background: var(--card);
}
.bot-input-row input {
  flex: 1;
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 8px 14px;
  font-size: 13px;
  outline: none;
  font-family: inherit;
  background: var(--paper);
  color: var(--ink);
}
.bot-input-row input:focus { border-color: var(--primary); background: #fff; }
.bot-send {
  background: var(--primary);
  color: #f4ecd8;
  border: none;
  padding: 0 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.bot-send:hover { background: var(--primary-dark); }

/* 截图上传按钮 */
.bot-upload {
  flex: 0 0 auto;
  width: 38px;
  border: 2px solid var(--border);
  border-radius: 20px;
  background: var(--paper);
  color: var(--primary);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s;
}
.bot-upload:hover { border-color: var(--primary); background: #fff; }

/* OCR 识别状态条 */
.bot-ocr-status {
  padding: 6px 14px 8px;
  font-size: 12px;
  color: var(--accent);
  background: var(--paper-deep);
  border-top: 1px dashed var(--border);
}
.ocr-text { color: var(--ink-soft); font-size: 12px; line-height: 1.6; }

@media (max-width: 880px) {
  .bot-panel { right: 12px; bottom: 84px; }
  .bot-fab { right: 14px; bottom: 14px; }
}

/* =====================================================================
 * 移动端适配 —— 完整手机/平板体验（≤880px）
 * ===================================================================== */
.menu-toggle {
  display: none;
  background: rgba(244, 236, 216, 0.15);
  border: 1px solid rgba(244, 236, 216, 0.3);
  color: #faf6ed;
  font-size: 20px;
  width: 38px; height: 38px;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 0;
  font-family: inherit;
}
.menu-toggle:hover { background: rgba(244, 236, 216, 0.25); }

.drawer-mask {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 50;
  opacity: 0;
  transition: opacity 0.25s;
}
.drawer-mask.show { opacity: 1; }

@media (max-width: 880px) {
  /* 顶栏收紧 */
  .brand-bar {
    padding: 12px 16px !important;
    gap: 10px !important;
  }
  .menu-toggle { display: flex; }
  .brand-logo {
    height: 42px !important;
    max-width: 190px !important;
  }
  .brand-divider { display: none; }
  .brand-text h1 { font-size: 17px !important; }
  .brand-text .sub { font-size: 11px !important; letter-spacing: 0 !important; }
  .brand-bar .right { display: none !important; }

  /* 主区单栏 */
  .main {
    grid-template-columns: 1fr !important;
    padding: 12px 12px 80px !important;
    gap: 12px !important;
  }

  /* 左栏抽屉化 */
  .left-panel {
    position: fixed !important;
    top: 0; left: 0; bottom: 0;
    width: 82vw; max-width: 340px;
    border-radius: 0 !important;
    z-index: 60;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    max-height: 100vh !important;
    overflow-y: auto;
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    padding: 20px 16px !important;
  }
  .left-panel.open { transform: translateX(0); }
  .left-panel h3 { font-size: 14px !important; margin-top: 36px !important; }
  .left-panel .close-drawer {
    display: block !important;
    position: absolute;
    top: 12px; right: 12px;
    width: 32px; height: 32px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 18px;
    color: var(--ink);
    cursor: pointer;
  }
  .cat-list li { padding: 12px !important; font-size: 14px !important; }

  /* 右栏直接隐藏（详情区呈现完整内容） */
  .right-panel { display: none !important; }

  /* 搜索区 */
  .search-zone { padding: 12px 14px !important; }
  .search-box input {
    height: 44px !important;
    font-size: 15px !important;
    padding: 0 16px !important;
  }
  .search-box button {
    height: 44px !important;
    padding: 0 18px !important;
  }
  /* 截图 OCR 按钮保持圆形 */
  .search-box .ocr-btn {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px !important;
    padding: 0 !important;
    margin-right: 6px !important;
    font-size: 18px !important;
  }
  .hint-bar { gap: 6px !important; }
  .hint {
    padding: 6px 12px !important;
    font-size: 12px !important;
  }

  /* 详情卡片 */
  .center-panel {
    padding: 14px !important;
    border-radius: 12px !important;
  }
  .item-title { font-size: 16px !important; line-height: 1.5 !important; }
  .meta-row { flex-wrap: wrap; gap: 6px !important; }
  .tag { font-size: 11px !important; padding: 3px 9px !important; }
  .content-block { padding: 12px !important; font-size: 14px !important; line-height: 1.75 !important; }
  .list-block { padding: 12px 14px !important; }
  .list-block li { font-size: 14px !important; padding: 6px 0 !important; }
  .matrix-table th, .matrix-table td {
    padding: 8px !important; font-size: 13px !important;
  }

  /* 问答浮窗变全屏 */
  .bot-fab {
    width: 52px !important; height: 52px !important;
    font-size: 22px !important;
    bottom: 18px !important; right: 18px !important;
  }
  .bot-panel {
    position: fixed !important;
    left: 16px !important; right: 16px !important;
    top: auto !important;
    bottom: 84px !important;
    width: auto !important;
    height: 72vh !important;
    max-height: 72vh !important;
    max-width: 520px !important;
    margin: 0 auto !important;
    border-radius: 20px !important;
    z-index: 70;
  }
  .bot-fab { right: 18px !important; bottom: 18px !important; }
  .bot-id { gap: 8px !important; }
  .bot-avatar { width: 30px !important; height: 30px !important; }
  .bot-panel .panel-head { padding: 14px 16px !important; }
  .bot-panel .panel-head h3 { font-size: 16px !important; }
  .bot-msgs { padding: 14px !important; }
  .bot-msg { font-size: 14px !important; padding: 10px 14px !important; }
  .bot-input { padding: 12px 14px !important; gap: 8px !important; }
  .bot-input input { font-size: 15px !important; height: 42px !important; }
  .bot-input button { padding: 0 16px !important; }
}

/* 桌面端隐藏关闭按钮（抽屉态下才用） */
.left-panel .close-drawer { display: none; }

/* ========== 产品展示模块 ========== */
.showcase-video-card {
  overflow: hidden;
  padding: 0 0 18px 0 !important;
}
.showcase-video-title {
  padding: 18px 22px 12px;
  font-size: 17px;
  font-weight: 600;
  color: var(--primary-dark);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.showcase-video-duration {
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--paper-deep);
  padding: 3px 10px;
  border-radius: 12px;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 400;
  flex-shrink: 0;
}
.showcase-video-card video {
  display: block;
  width: 100%;
  max-height: 520px;
  background: #000;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.showcase-sub-block { margin-top: 22px; }
.showcase-sub-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-dark);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  margin: 2px 2px 12px;
}
.showcase-video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.showcase-video-grid .showcase-video-card video { max-height: 220px; }
@media (max-width: 900px) {
  .showcase-video-grid { grid-template-columns: 1fr; }
  .showcase-video-grid .showcase-video-card video { max-height: 300px; }
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 18px;
}
.showcase-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all 0.2s;
}
.showcase-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.showcase-card:hover .showcase-img-wrap img {
  transform: scale(1.03);
}
.showcase-img-wrap {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--paper-deep);
  border-bottom: 1px solid var(--border);
}
.showcase-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.showcase-info {
  padding: 14px 16px 16px;
}
.showcase-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-dark);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  margin-bottom: 6px;
}
.showcase-note {
  font-size: 11.5px;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.showcase-actions {
  display: flex;
  justify-content: flex-end;
}
.btn-small {
  padding: 5px 12px;
  border-radius: 14px;
  font-size: 12px;
  background: var(--primary);
  color: #f4ecd8;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  pointer-events: none;
}
.showcase-card:hover .btn-small { background: var(--primary-dark); }

/* 产品详情弹窗 */
.showcase-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.showcase-modal.show {
  opacity: 1;
  pointer-events: auto;
}
.showcase-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(31, 44, 41, 0.55);
}
.showcase-modal-content {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(31, 44, 41, 0.25);
  width: 100%;
  max-width: 760px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  padding: 28px 30px 30px;
  transform: translateY(10px);
  transition: transform 0.2s ease;
}
.showcase-modal.show .showcase-modal-content {
  transform: translateY(0);
}
.showcase-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.showcase-modal-close:hover {
  background: var(--seal);
  color: #faf6ed;
  border-color: var(--seal);
}
.showcase-modal-content h2 {
  font-size: 19px;
  color: var(--primary-dark);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  margin-bottom: 20px;
  padding-right: 40px;
}
.showcase-modal-product {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.showcase-modal-img {
  flex: 0 0 260px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--paper-deep);
}
.showcase-modal-img img {
  width: 100%;
  display: block;
}
.showcase-modal-info {
  flex: 1;
  min-width: 0;
}
.showcase-modal-info .field {
  margin-bottom: 12px;
  font-size: 13.5px;
  line-height: 1.75;
}
.showcase-modal-info .field .label {
  color: var(--accent);
  font-weight: 600;
  margin-right: 6px;
  font-size: 12.5px;
}
.showcase-modal-info .field .label::before {
  content: "·";
  color: var(--seal);
  margin-right: 4px;
}

@media (max-width: 1280px) {
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 880px) {
  .showcase-grid { grid-template-columns: 1fr; gap: 14px; margin-top: 14px; }
  .showcase-video-card { padding: 0 0 14px 0 !important; }
  .showcase-video-title { padding: 14px 16px 10px; font-size: 15px; }
  .showcase-video-card video { max-height: 280px; }
  .showcase-modal { align-items: flex-end; padding: 0; }
  .showcase-modal-content { max-height: 86vh; border-radius: 16px 16px 0 0; padding: 22px 18px 24px; }
  .showcase-modal-product { flex-direction: column; gap: 16px; }
  .showcase-modal-img { flex: 0 0 auto; width: 100%; max-width: 320px; margin: 0 auto; }
  .showcase-modal-content h2 { font-size: 17px; }
}

/* 中等屏幕：平板横屏 */
@media (min-width: 881px) and (max-width: 1280px) {
  .brand-bar { padding: 18px 24px !important; }
  .main { padding: 16px 20px !important; }
}

/* ===== 案例对比卡 ===== */
.cmp-card .cmp-cols { display: flex; gap: 12px; margin: 12px 0; }
.cmp-col {
  flex: 1; min-width: 0;
  border-radius: 10px; padding: 12px 14px;
  border: 1px solid #e3d9c2;
  background: linear-gradient(135deg, #faf6ed 0%, #f4ecd8 100%);
}
.cmp-col-h { font-weight: 700; color: var(--seal); margin-bottom: 6px; font-size: 14px; }
.cmp-col-b { font-size: 13px; line-height: 1.65; color: var(--ink-soft); }
.cmp-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 13px; }
.cmp-table th, .cmp-table td { border: 1px solid #e3d9c2; padding: 8px 10px; text-align: left; vertical-align: top; }
.cmp-table th { background: var(--paper-deep); color: var(--ink); font-weight: 700; }
.cmp-table td:first-child { color: var(--ink-soft); white-space: nowrap; }

/* ===== 产品图文卡 ===== */
.prod-card .ans-media { margin-bottom: 8px; }
.prod-card .ans-media img { max-width: 200px; width: 100%; border-radius: 10px; box-shadow: 0 4px 14px rgba(44,62,45,.12); }
.prod-card h3 { color: var(--ink); }

/* 移动端：对比卡改为上下堆叠，避免挤压 */
@media (max-width: 640px) {
  .cmp-card .cmp-cols { flex-direction: column; gap: 10px; }
  .prod-card .ans-media img { max-width: 160px; }
}

/* 培训手册多图画廊 + 灯箱 */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px;margin-top:12px}
.gallery-grid img{width:100%;height:140px;object-fit:cover;border-radius:6px;cursor:zoom-in;border:1px solid rgba(0,0,0,.08);background:var(--paper-deep, #f4ecd8)}
.gallery-grid img:hover{opacity:.85}
.lightbox{position:fixed;inset:0;background:rgba(20,30,26,.9);display:none;align-items:center;justify-content:center;z-index:9999;padding:24px;cursor:zoom-out}
.lightbox.show{display:flex}
.lightbox img{max-width:94%;max-height:94%;border-radius:8px;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.lb-close{position:absolute;top:18px;right:28px;color:#fff;font-size:42px;line-height:1;cursor:pointer;opacity:.8}

/* ========== 教学资源中心 ========== */
.cat-list li.res-pin{
  background:linear-gradient(135deg,rgba(200,168,120,.20),rgba(200,168,120,.06));
  border:1px solid var(--accent);font-weight:600;color:var(--primary-dark);margin-bottom:8px;
}
.cat-list li.res-pin:hover{background:var(--accent-light)}
.cat-list li.res-pin.active{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#f4ecd8;border-color:var(--primary);box-shadow:0 2px 8px rgba(45,95,63,.25);
}
.cat-list li.res-pin.active .count{background:rgba(244,236,216,.22);color:#f4ecd8}

.res-chips{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 16px}
.res-chip{
  border:1px solid var(--border);background:var(--card);color:var(--ink);
  padding:8px 14px;border-radius:999px;cursor:pointer;font-size:14px;
  display:inline-flex;align-items:center;gap:6px;transition:all .15s;
}
.res-chip:hover{border-color:var(--primary);color:var(--primary)}
.res-chip.active{background:var(--primary);color:#f4ecd8;border-color:var(--primary);font-weight:600}
.res-chip-n{font-size:11px;background:rgba(0,0,0,.08);padding:1px 8px;border-radius:10px}
.res-chip.active .res-chip-n{background:rgba(244,236,216,.22)}

.res-section-title{
  display:flex;align-items:center;gap:8px;font-size:16px;color:var(--primary-dark);
  margin:6px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--accent);
}
.res-section-title span{margin-left:auto;font-size:12px;color:var(--ink-soft);font-weight:400}

.res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-bottom:20px}
.res-card{
  background:var(--card);border:1px solid var(--border);border-radius:10px;overflow:hidden;
  cursor:pointer;transition:all .15s;box-shadow:var(--shadow);
}
.res-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.res-card:focus{outline:2px solid var(--primary);outline-offset:2px}
.res-thumb{height:96px;display:flex;align-items:center;justify-content:center;font-size:34px;color:#f4ecd8}
.res-thumb-video{background:linear-gradient(135deg,var(--primary),var(--primary-dark))}
.res-thumb-image{background:linear-gradient(135deg,var(--accent),#b08f5e)}
.res-card-name{
  padding:8px 10px 4px;font-size:13px;color:var(--ink);font-weight:500;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:38px;word-break:break-all;
}
.res-card-type{padding:0 10px 8px;font-size:11px;color:var(--ink-soft)}

/* 媒体弹窗：视频尺寸与说明文字（图片复用已有 .lightbox img） */
.lightbox{flex-direction:column}
.lightbox video{max-width:94%;max-height:84%;background:#000;border-radius:8px;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.media-cap{position:absolute;bottom:20px;left:0;right:0;text-align:center;color:#f4ecd8;font-size:14px;padding:0 24px}

@media (max-width:768px){
  .res-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
  .res-thumb{height:78px;font-size:28px}
}