:root {
  --bg: #f5f6f8; --text: #1a1a2e;
  --text-secondary: #6b7280; --border: #e5e7eb;
  --radius: 12px;
  --shadow-hover: 0 8px 24px rgba(59,130,246,.12);
  --blue: #3b82f6; --blue-dark: #2563eb;
  --blue-light: #eff6ff; --blue-border: #bfdbfe;
}
* { margin:0; padding:0; box-sizing:border-box; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6;
  display: flex; flex-direction: column; min-height: 100%;
}

.hero { padding: 40px 24px 20px;
  background: linear-gradient(180deg, #ffffff 0%, #f5f6f8 100%); }
.top-row { max-width: 1180px; margin: 0 auto;
  display: flex; align-items: flex-start; gap: 12px; }
.left-tabs { display: flex; gap: 6px; align-items: center;
  flex-shrink: 0; margin-top: 10px; }
.menu-btn { width: 38px; height: 38px;
  border: 1px solid var(--border); background: #fff;
  border-radius: 10px; cursor: pointer; font-size: 15px;
  color: var(--text-secondary); transition: .15s;
  display: flex; align-items: center; justify-content: center; }
.menu-btn:hover { background: #f3f4f6; color: var(--text); border-color: #d1d5db; }
.tab-btn { padding: 7px 14px; border-radius: 9px;
  border: 1px solid transparent; background: transparent;
  font-size: 13px; font-weight: 600; cursor: pointer;
  color: var(--text-secondary); transition: .15s; white-space: nowrap; }
.tab-btn:hover { background: #fff; color: var(--text); }
.tab-btn.active { background: #fff; color: var(--text);
  border-color: var(--border); box-shadow: 0 1px 4px rgba(0,0,0,.05); }
.tab-btn.active.custom-tab { color: var(--blue-dark);
  border-color: var(--blue-border); background: var(--blue-light); }

.search-wrap { flex: 1; position: relative;
  display: flex; align-items: center;
  background: #fff; border: 1px solid var(--border);
  border-radius: 14px; padding: 0 4px;
  box-shadow: 0 4px 16px rgba(59,130,246,.08);
  transition: .2s; height: 50px; min-width: 0; }
.search-wrap:focus-within { border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(59,130,246,.12), 0 4px 16px rgba(59,130,246,.1); }
.engine-btn { height: 38px; padding: 0 10px;
  border: none; background: transparent; border-radius: 10px; cursor: pointer;
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--text);
  transition: background .15s; flex-shrink: 0; }
.engine-btn:hover { background: #f3f4f6; }
.engine-dot { width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 800; color: #fff; flex-shrink: 0; }
.engine-arrow { font-size: 8px; color: #9ca3af; margin-left: 2px; }
.search-input { flex: 1; border: none; outline: none;
  font-size: 15px; background: transparent;
  height: 100%; color: var(--text); min-width: 0; padding: 0 8px; }
.search-btn { height: 40px; padding: 0 22px;
  border: none; border-radius: 10px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff; font-size: 13px; font-weight: 700;
  cursor: pointer; transition: .15s; flex-shrink: 0; margin-right: 2px; }
.search-btn:hover { transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59,130,246,.4); }

.main { flex: 1; max-width: 1400px; margin: 0 auto;
  width: 100%; padding: 8px 24px 60px; }

.groups-grid { display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px; align-items: stretch; }
.group-card { background: #fff; border-radius: 16px;
  border: 2px solid var(--blue-border);
  padding: 0; box-shadow: 0 2px 12px rgba(59,130,246,.06);
  transition: border-color .15s, box-shadow .15s, opacity .15s;
  display: flex; flex-direction: column; height: 420px;
  overflow: hidden; position: relative; }
.group-card.is-stretched { height: 620px; }
.group-card:hover { box-shadow: 0 6px 20px rgba(59,130,246,.12); }
.group-card.group-dragging { opacity: .35; transform: scale(.98); transition: transform .15s, opacity .15s; }
.group-placeholder { min-height: 120px; border: 2px dashed var(--blue); border-radius: 16px; background: rgba(219,234,254,.55); transition: all .15s ease; }

/* 标题栏：明亮浅蓝背景 + 四向箭头光标 */
.group-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; padding: 14px 16px 12px;
  user-select: none;
  cursor: move;
  background: #c7dffd;
  border-radius: 14px 14px 0 0;
  transition: background .15s, cursor .15s;
}
.group-head:hover { background: #a9cdfb; }
.group-head:active { cursor: move; }
/* 常用格子：透明背景 + 普通光标 */
.group-card.common .group-head,
.group-card.common .group-head:active {
  cursor: default;
  background: transparent;
}

.group-head-left { display: flex; align-items: center; gap: 8px;
  flex: 1; min-width: 0; }
.group-bar { width: 4px; height: 20px; border-radius: 2px;
  background: linear-gradient(180deg, #3b82f6, #2563eb); flex-shrink: 0; }
.group-card.common .group-bar {
  background: linear-gradient(180deg, #f59e0b, #d97706); }
.group-name {
  font-size: 16px; font-weight: 800; outline: none;
  padding: 2px 6px; border-radius: 6px;
  min-width: 30px; max-width: 200px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  cursor: move;
  user-select: none;
}
.group-card.common .group-name { cursor: default; }
.group-name[contenteditable="true"] {
  cursor: text;
  user-select: text;
  background: var(--blue-light);
  box-shadow: 0 0 0 2px var(--blue-border);
}
.group-count { font-size: 12px; color: var(--text-secondary);
  background: #f3f4f6; padding: 1px 8px;
  border-radius: 10px; flex-shrink: 0; }
.group-view-toggle { min-width: 28px; height: 28px; padding: 0 6px; font-size: 24px; line-height: 1; }
.btn-del-group { width: 34px; height: 34px; border: none; background: transparent;
  border-radius: 8px; cursor: pointer; font-size: 21px; color: #9ca3af;
  flex-shrink: 0; transition: .15s; line-height: 1;
  display: flex; align-items: center; justify-content: center; }
.btn-del-group:hover { background: #fef2f2; color: #ef4444; }

.group-add-icon { min-width: 32px; height: 32px; padding: 0; font-size: 30px; line-height: 1; }
.group-head .group-add-btn { margin: 0; border: 1px solid var(--blue-border); background: #eff6ff; }

.group-add-btn { margin: 0 16px 12px; padding: 9px;
  border: 1.5px dashed var(--blue-border); border-radius: 10px;
  background: var(--blue-light); color: var(--blue-dark);
  font-size: 13px; font-weight: 700; cursor: pointer; transition: .2s; }
.group-add-btn:hover { background: #dbeafe; border-color: var(--blue); }

.group-items { flex: 1; min-height: 0;
  padding: 0 10px 10px;
  display: flex; flex-direction: column; gap: 2px;
  overflow-y: auto; }
.group-items::-webkit-scrollbar { width: 6px; }
.group-items::-webkit-scrollbar-thumb {
  background: #d1d5db; border-radius: 3px; }
.group-empty { text-align: center; padding: 40px 12px;
  color: #9ca3af; font-size: 13px; }

.g-item { display: flex; align-items: center; gap: 10px;
  padding: 8px; border-radius: 10px;
  transition: background .15s;
  cursor: grab; user-select: none; position: relative; }
.g-item:hover { background: #fafafa; }
.g-item:active { cursor: grabbing; }
.g-item.dragging { opacity: .35; background: var(--blue-light); }
.g-item.drop-before::before,
.g-item.drop-after::after {
  content: ""; position: absolute; left: 4px; right: 4px;
  height: 3px; background: var(--blue); border-radius: 2px;
  box-shadow: 0 0 0 2px rgba(59,130,246,.25); z-index: 2; }
.g-item.drop-before::before { top: -2px; }
.g-item.drop-after::after  { bottom: -2px; }

.g-icon { width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.g-icon.c0 { background: linear-gradient(135deg, #f97316, #fb923c); }
.g-icon.c1 { background: linear-gradient(135deg, #06b6d4, #0ea5e9); }
.g-icon.c2 { background: linear-gradient(135deg, #10b981, #34d399); }
.g-icon.c3 { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.g-icon.c4 { background: linear-gradient(135deg, #f43f5e, #fb7185); }
.g-icon.c5 { background: linear-gradient(135deg, #eab308, #facc15); }
.g-info { flex: 1; min-width: 0; }
.g-name { font-size: 14px; font-weight: 700; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.g-desc { font-size: 12px; color: var(--text-secondary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.g-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.g-move { width: 26px; height: 26px;
  border: 1px solid var(--border); background: #fff;
  border-radius: 6px; cursor: pointer; font-size: 12px;
  color: #6b7280; transition: .15s; }
.g-move:hover { background: #f3f4f6; color: var(--text); }
.g-move:disabled { opacity: .3; cursor: not-allowed; }
.g-use { padding: 5px 12px; border-radius: 8px; background: var(--blue-light);
  color: var(--blue-dark); font-size: 12px; font-weight: 600;
  text-decoration: none; white-space: nowrap; transition: .15s; }
.g-use:hover { background: #dbeafe; }

/* 图标网格模式：小图标自动填充可用宽度，点击仍直接打开网站。 */
.group-card.grid-view .group-items {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  align-content: start; align-items: start; gap: 8px; padding: 10px 12px 14px;
}
.group-card.grid-view .g-item {
  min-width: 0; min-height: 72px; padding: 6px 3px; flex-direction: column;
  justify-content: flex-start; gap: 4px; cursor: grab; text-align: center;
}
.group-card.grid-view .g-icon { width: 40px; height: 40px; border-radius: 8px; font-size: 17px; }
.group-card.grid-view .g-info { width: 100%; }
.group-card.grid-view .g-name { font-size: 14px; text-align: center; }
.group-card.grid-view .g-desc { display: none; }
.group-card.grid-view .g-actions { position: absolute; top: 2px; right: 2px; }
.group-card.grid-view .g-use { display: none; }
.grid-view .more-item { display: none !important; }
.group-resize-handle { position: absolute; z-index: 4; left: 14px; right: 14px; bottom: 2px; height: 10px; cursor: ns-resize; border-radius: 8px; }
.group-resize-handle:hover { background: rgba(59,130,246,.18); }
.group-card.collapsed .group-resize-handle { display: none; }

.new-group-card { background: #fff; border-radius: 16px;
  border: 2px dashed var(--blue-border);
  height: 420px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 14px; cursor: pointer; transition: .2s;
  color: var(--blue-dark); user-select: none; }
.new-group-card:hover { border-color: var(--blue);
  background: var(--blue-light); transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59,130,246,.15); }
.new-group-icon { width: 56px; height: 56px; border-radius: 50%;
  background: var(--blue-light); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 300; transition: .2s; }
.new-group-card:hover .new-group-icon { background: var(--blue); color: #fff; }
.new-group-text { font-size: 14px; font-weight: 700; }
.new-group-sub { font-size: 12px; color: #9ca3af; margin-top: -8px; }

.empty { text-align: center; padding: 80px 20px;
  color: var(--text-secondary); font-size: 15px; }

.tool-search-row { max-width: 480px; margin: 0 auto 20px; position: relative; }
.tool-search { width: 100%; height: 42px; padding: 0 16px 0 42px;
  border: 1px solid var(--border); border-radius: 12px;
  background: #fff; font-size: 14px; outline: none;
  transition: .2s; font-family: inherit; }
.tool-search:focus { border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12); }
.tool-search-row::before { content: "🔍"; position: absolute;
  left: 15px; top: 50%; transform: translateY(-50%);
  font-size: 14px; opacity: .5; pointer-events: none; }

.cat-nav { display: flex; gap: 6px; overflow-x: auto;
  padding: 0 0 20px; margin-bottom: 4px;
  justify-content: center; flex-wrap: wrap; }
.cat-btn { padding: 5px 14px; border-radius: 18px;
  border: 1px solid transparent; background: transparent;
  font-size: 13px; cursor: pointer; white-space: nowrap;
  color: var(--text-secondary); transition: .15s; }
.cat-btn:hover { background: #eef0f4; color: var(--text); }
.cat-btn.active { background: var(--blue); color: #fff;
  border-color: var(--blue); font-weight: 600; }

.grid { display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px; }
.card { background: #fff; border-radius: var(--radius);
  border: 1px solid var(--border); padding: 18px;
  transition: all .2s ease; display: flex; flex-direction: column; gap: 10px;
  cursor: pointer; }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px);
  border-color: var(--blue-border); }
.card-top { display: flex; align-items: center; gap: 12px; }
.card-icon { width: 40px; height: 40px; border-radius: 10px;
  background: var(--blue-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: var(--blue); flex-shrink: 0; }
.card-name { font-size: 15px; font-weight: 700; line-height: 1.3; flex: 1; }
.ext-icon { font-size: 14px; color: var(--blue); opacity: 0; transition: opacity .2s; }
.card:hover .ext-icon { opacity: 1; }
.card-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 38px; }
.card-footer { display: flex; flex-direction: column; gap: 10px;
  margin-top: auto; padding-top: 4px; }
.card-tags { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 11px; padding: 2px 8px; border-radius: 6px;
  background: #f3f4f6; color: var(--text-secondary); }
.tag.free { background: #ecfdf5; color: #059669; }
.tag.paid { background: #fef3c7; color: #d97706; }
.tag.cn { background: #eff6ff; color: #2563eb; }
.tag.overseas { background: #fdf2f8; color: #db2777; }
.card-actions { display: flex; gap: 8px; }
.btn-use { flex: 1; padding: 7px 12px; border: none; border-radius: 8px;
  background: var(--blue-light); color: var(--blue-dark); font-size: 12px;
  font-weight: 700; cursor: pointer; transition: .15s; }
.btn-use:hover { background: #dbeafe; }
.btn-add-common { flex: 1; padding: 7px 12px; border: none; border-radius: 8px;
  background: #fff7ed; color: #ea580c;
  font-size: 12px; font-weight: 700; cursor: pointer; transition: .15s; }
.btn-add-common:hover { background: #ffedd5; }
.btn-add-common.added { background: #f3f4f6; color: #9ca3af; cursor: default; }
.btn-add-common.added:hover { background: #f3f4f6; }

.ctx-menu { position: fixed; z-index: 2000; min-width: 180px;
  background: #fff; border: 1px solid var(--border);
  border-radius: 10px; box-shadow: 0 12px 40px rgba(0,0,0,.15);
  padding: 6px; display: none; animation: ctxIn .12s ease; }
@keyframes ctxIn { from { opacity: 0; transform: scale(.96); } }
.ctx-item { display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: 6px; font-size: 13px;
  color: var(--text); cursor: pointer; transition: .12s;
  position: relative; white-space: nowrap; }
.ctx-item:hover { background: #f3f4f6; }
.ctx-item.danger { color: #dc2626; }
.ctx-item.danger:hover { background: #fef2f2; }
.ctx-item.disabled { color: #d1d5db; cursor: not-allowed; }
.ctx-item.disabled:hover { background: transparent; }
.ctx-icon { width: 16px; text-align: center; font-size: 13px; }
.ctx-label { flex: 1; }
.ctx-arrow { color: #9ca3af; font-size: 14px; }
.ctx-sep { height: 1px; background: var(--border); margin: 4px 2px; }
.ctx-item.has-sub { position: relative; }
.ctx-sub { display: none; position: absolute; left: 100%; top: 0;
  margin-left: 4px; min-width: 160px;
  background: #fff; border: 1px solid var(--border);
  border-radius: 10px; box-shadow: 0 12px 40px rgba(0,0,0,.15);
  padding: 6px; max-height: 320px; overflow-y: auto; }
.ctx-item.has-sub:hover .ctx-sub { display: block; }
.ctx-sub .ctx-item { padding: 7px 12px; }

.engine-menu { position: fixed; z-index: 1500; min-width: 220px;
  background: #fff; border: 1px solid var(--border);
  border-radius: 12px; box-shadow: 0 12px 40px rgba(0,0,0,.15);
  padding: 6px; display: none; animation: ctxIn .12s ease; }
.engine-menu.show { display: block; }
.engine-item { display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 8px;
  font-size: 13px; cursor: pointer; transition: .12s; }
.engine-item:hover { background: #f3f4f6; }
.engine-item.active { background: var(--blue-light); color: var(--blue-dark); font-weight: 700; }
.engine-dot-lg { width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 800; color: #fff; flex-shrink: 0; }
.engine-name-lg { flex: 1; }
.engine-check { color: var(--blue); font-weight: 800; font-size: 14px; }
.engine-sep { height: 1px; background: var(--border); margin: 4px 2px; }
.engine-add { display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 8px;
  font-size: 13px; cursor: pointer; transition: .12s;
  color: var(--blue-dark); font-weight: 700; }
.engine-add:hover { background: var(--blue-light); }

.modal-mask { position: fixed; inset: 0; z-index: 1000;
  background: rgba(15,23,42,.5); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; animation: fadeIn .15s ease; }
@keyframes fadeIn { from { opacity: 0; } }
.modal { width: 100%; max-width: 560px; max-height: 80vh;
  background: #fff; border-radius: 16px;
  display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.25);
  animation: slideUp .2s ease; }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } }
.modal-head { display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-tabs { display: flex; gap: 4px; background: #f3f4f6;
  padding: 4px; border-radius: 10px; }
.modal-tab { padding: 7px 14px; border: none; background: transparent;
  border-radius: 8px; font-size: 13px; font-weight: 600;
  color: var(--text-secondary); cursor: pointer; transition: .15s;
  white-space: nowrap; }
.modal-tab.active { background: #fff; color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.modal-close { width: 32px; height: 32px; border: none; background: transparent;
  font-size: 20px; color: #9ca3af; cursor: pointer;
  border-radius: 8px; transition: .15s; }
.modal-close:hover { background: #f3f4f6; color: var(--text); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-input { width: 100%; padding: 10px 14px; margin-bottom: 10px;
  border: 1px solid var(--border); border-radius: 10px;
  font-size: 14px; outline: none; transition: .15s;
  background: #f9fafb; font-family: inherit; }
.modal-input:focus { border-color: var(--blue); background: #fff;
  box-shadow: 0 0 0 3px rgba(59,130,246,.12); }
.modal-confirm { width: 100%; padding: 11px; margin-top: 6px;
  border: none; border-radius: 10px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff; font-size: 14px; font-weight: 700;
  cursor: pointer; transition: .15s; }
.modal-confirm:hover { opacity: .9; }
.modal-hint { font-size: 12px; color: var(--text-secondary);
  padding: 6px 4px 12px; line-height: 1.5; }
.modal-hint code { background: #f3f4f6; padding: 1px 6px; border-radius: 4px;
  font-family: ui-monospace, Menlo, monospace; color: var(--blue-dark); }

.search-list { max-height: 340px; overflow-y: auto; margin-top: 4px; }
.search-item { display: flex; align-items: center; gap: 10px; padding: 10px;
  border-radius: 10px; transition: background .15s; }
.search-item:hover { background: #f9fafb; }
.si-icon { width: 36px; height: 36px; border-radius: 9px;
  background: var(--blue-light); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; flex-shrink: 0; }
.si-icon.eng { color: #fff; }
.si-info { flex: 1; min-width: 0; }
.si-name { font-size: 14px; font-weight: 700; }
.si-desc { font-size: 12px; color: var(--text-secondary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.si-add { padding: 6px 14px; border-radius: 8px; border: none;
  background: var(--blue-light); color: var(--blue-dark);
  font-size: 12px; font-weight: 700; cursor: pointer;
  transition: .15s; flex-shrink: 0; }
.si-add:hover { background: #dbeafe; }
.si-add:disabled { background: #f3f4f6; color: #9ca3af; cursor: default; }
.search-hint { text-align: center; padding: 30px 12px;
  color: #9ca3af; font-size: 13px; }

.drawer-mask { position: fixed; inset: 0; z-index: 1500;
  background: rgba(15,23,42,.4); backdrop-filter: blur(2px);
  display: none; animation: fadeIn .15s ease; }
.drawer-mask.show { display: block; }
.drawer { position: absolute; top: 0; left: 0; bottom: 0;
  width: 300px; max-width: 85vw; background: #fff;
  display: flex; flex-direction: column;
  box-shadow: 4px 0 24px rgba(0,0,0,.15);
  animation: drawerIn .2s ease; }
@keyframes drawerIn { from { transform: translateX(-100%); } }
.drawer-head { display: flex; align-items: center; justify-content: space-between;
  padding: 20px; border-bottom: 1px solid var(--border); }
.drawer-title { font-size: 16px; font-weight: 800; }
.drawer-body { padding: 16px; flex: 1; overflow-y: auto; }
.drawer-item { display: flex; align-items: center; gap: 12px;
  padding: 12px; border-radius: 10px;
  font-size: 14px; cursor: pointer; transition: .15s; color: var(--text); }
.drawer-item:hover { background: #f3f4f6; }
.drawer-item.danger { color: #dc2626; }
.drawer-item.danger:hover { background: #fef2f2; }
.drawer-stats { background: #f9fafb; border-radius: 10px;
  padding: 14px 16px; margin-bottom: 12px;
  font-size: 13px; color: var(--text-secondary); }
.drawer-stats b { color: var(--text); font-weight: 800; }

@media (max-width: 900px) {
  .top-row { flex-wrap: wrap; }
  .left-tabs { order: 1; width: 100%; justify-content: flex-start;
    overflow-x: auto; padding-bottom: 6px; margin-top: 0; }
  .search-wrap { order: 2; width: 100%; flex: none; }
}
@media (max-width: 720px) {
  .hero { padding: 20px 16px 16px; }
  .tab-btn { padding: 7px 12px; font-size: 12px; }
  .search-btn { padding: 0 14px; }
  .main { padding: 8px 16px 60px; }
  .groups-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .cat-nav { justify-content: flex-start; }
  .tool-search-row { max-width: 100%; }
}

/* Keep offscreen groups out of layout/paint while preserving drag DOM. */
.group-card { content-visibility:auto; contain-intrinsic-size:auto 420px; }