* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  background: #f3f4f6;
  color: #172033;
  font-size: 13px;
}
.topbar {
  height: 128px;
  display: flex;
  align-items: center;
  gap: 44px;
  padding: 0 24px;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}
.brand { display: flex; align-items: center; gap: 12px; color: #ff4d1f; font-weight: 800; }
.brand-mark {
  width: 46px; height: 46px; border-radius: 50%;
  border: 5px solid #ff4d1f; display: grid; place-items: center;
  font-size: 28px; line-height: 1;
}
.brand-copy { display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.brand-name { display: flex; align-items: baseline; line-height: 1; }
.brand-main { font-size: 42px; }
.brand-tail { font-size: 34px; margin-left: 2px; }
.brand-subtitle { color: #64748b; font-size: 15px; font-weight: 600; line-height: 1.2; }
.nav { display: flex; align-items: center; gap: 10px; height: 100%; flex-wrap: wrap; }
.nav button {
  border: 0; background: transparent; height: 45px; padding: 0 18px;
  color: #536174; border-radius: 6px; cursor: pointer; font-size: 16px;
  display: inline-flex; align-items: center; justify-content: center;
}
.nav button.active { background: #ff6238; color: #fff; font-weight: 800; }
.nav-hot {
  background: #ff6238 !important;
  color: #fff !important;
  font-weight: 800;
}
.nav-tier { font-weight: 700; border: 1px solid transparent !important; }
.nav-tier.tier-1 { background: #fff7ed; color: #c2410c; border-color: #fed7aa !important; }
.nav-tier.tier-2 { background: #fef3c7; color: #92400e; border-color: #fde68a !important; }
.nav-tier.tier-3 { background: #f5e6c8; color: #7c4a03; border-color: #e8c889 !important; }
.nav-tier.tier-4 { background: #e8d7b7; color: #5f3b07; border-color: #d3b16e !important; }
.nav-tier.active,
.nav-hot.active { background: #ff6238; color: #fff; border-color: #ff6238 !important; }
.nav-user { background: #f8fafc !important; color: #334155 !important; border: 1px solid #d8dee8 !important; font-weight: 700; }
.nav-user.active { background: #334155 !important; color: #fff !important; }
main { padding: 16px 0 32px; }
.panel {
  background: #fff;
  border: 1px solid #e5e7eb;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}
.hero {
  margin: 0 12px 0;
  border-radius: 8px 8px 0 0;
  padding: 22px 30px 20px;
}
.title-row { display: flex; align-items: center; gap: 14px; }
.title-row h1 { margin: 0 24px 0 0; font-size: 30px; color: #0f172a; }
.title-icon { color: #ff4d1f; font-size: 30px; font-weight: 800; }
.hero p { margin: 18px 0 4px; color: #68758a; font-size: 17px; line-height: 1.55; }
.data-update-time {
  margin-left: auto;
  color: #64748b;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}
select, input {
  height: 42px;
  border: 1.5px solid #ff8a5c;
  border-radius: 5px;
  background: #fff;
  padding: 0 14px;
  color: #111827;
  outline: none;
  font-size: 16px;
}
input { width: 100%; }
input[type="checkbox"].row-check {
  width: 24px;
  height: 24px;
  padding: 0;
  margin: 0;
  accent-color: #1677ff;
  cursor: pointer;
}
select:focus, input:focus { border-color: #ff7a55; box-shadow: 0 0 0 2px rgba(255, 98, 56, .12); }
#siteSelect {
  min-width: 132px;
  font-weight: 700;
}
.filters {
  margin: 0 0 22px;
  padding: 20px 30px 42px;
  border-left: 0; border-right: 0;
  position: relative;
}
.filter-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 16px 10px;
}
label span {
  display: block;
  color: #475569;
  margin-bottom: 7px;
  font-size: 12px;
}
label select { width: 100%; }
.multi-select {
  position: relative;
  width: 100%;
}
.multi-select-button {
  width: 100%;
  height: 42px;
  padding: 0 36px 0 14px;
  border: 1.5px solid #ff8a5c !important;
  border-radius: 5px;
  background: #fff;
  color: #111827;
  font-size: 16px;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.multi-select-button::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 18px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid #64748b;
}
.multi-select.open .multi-select-button {
  border-color: #ff7a55;
  box-shadow: 0 0 0 2px rgba(255, 98, 56, .12);
}
.multi-select-menu {
  position: absolute;
  z-index: 30;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  display: none;
  max-height: 292px;
  overflow: auto;
  padding: 8px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(15, 23, 42, .14);
}
.multi-select.open .multi-select-menu { display: block; }
.multi-option {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 34px;
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
}
.multi-option:hover { background: #fff7f2; }
.multi-option input {
  width: 16px;
  height: 16px;
  padding: 0;
  margin: 0;
  accent-color: #ff6238;
}
.multi-option span {
  margin: 0;
  color: #0f172a;
  font-size: 14px;
  line-height: 1.25;
}
.filter-actions {
  position: absolute;
  right: 30px;
  bottom: 10px;
  display: flex;
  gap: 10px;
}
.search-panel {
  margin: -10px 0 22px;
  padding: 16px 30px;
  border-left: 0;
  border-right: 0;
  display: flex;
  align-items: end;
  gap: 18px;
}
.keyword-search {
  display: block;
  width: min(100%, 980px);
  max-width: 980px;
  flex: 1 1 760px;
}
.keyword-search-box {
  position: relative;
  display: flex;
  align-items: stretch;
  height: 48px;
  border: 1.5px solid #ff8a5c !important;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(255, 98, 56, .12), 0 1px 2px rgba(15, 23, 42, .04);
  overflow: visible;
}
.keyword-search input {
  flex: 1;
  height: 100%;
  border: 0;
  border-radius: 6px 0 0 6px;
  box-shadow: none;
  padding: 0 16px;
  font-size: 17px;
}
.keyword-search input:focus {
  box-shadow: none;
}
.keyword-search-box:focus-within {
  border-color: #ff6238;
  box-shadow: 0 0 0 3px rgba(255, 98, 56, .16);
}
.keyword-search-btn {
  width: 96px;
  height: 100%;
  border: 0;
  border-left: 1px solid #ffe0d4;
  border-radius: 0 5px 5px 0;
  background: #ff6238;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}
.keyword-search-btn:hover {
  background: #ef4f25;
}
.keyword-profile-tabs {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-bottom: 1px;
}
.keyword-profile-tab {
  height: 48px;
  min-width: 116px;
  padding: 0 16px;
  border-radius: 6px;
  border: 1px solid #fed7aa;
  background: #fff7ed;
  color: #9a3412;
  font-size: 16px;
  font-weight: 800;
}
.keyword-profile-tab.active {
  background: #ff6238;
  border-color: #ff6238;
  color: #fff;
}
.keyword-profile-tab.stable {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1d4ed8;
}
.keyword-profile-tab.extreme {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #15803d;
}
.keyword-profile-tab.seasonal {
  background: #fff7ed;
  border-color: #fed7aa;
  color: #c2410c;
}
.keyword-profile-tab.active.seasonal,
.keyword-profile-tab.active.stable,
.keyword-profile-tab.active.extreme {
  background: #ff6238;
  border-color: #ff6238;
  color: #fff;
}
.keyword-suggestions {
  position: absolute;
  z-index: 40;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  max-height: 430px;
  overflow: auto;
  padding: 8px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 16px 34px rgba(15, 23, 42, .16);
}
.keyword-suggestion-item {
  display: grid;
  grid-template-columns: 76px 1fr 82px;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 54px;
  padding: 8px 10px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  text-align: left;
}
.keyword-suggestion-item:hover {
  background: #fff7f2;
}
.suggestion-rank {
  color: #ff5b2e;
  font-size: 16px;
  font-weight: 800;
}
.suggestion-main strong {
  display: block;
  color: #0f172a;
  font-size: 16px;
}
.suggestion-main small {
  display: block;
  margin-top: 4px;
  color: #64748b;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.suggestion-share {
  color: #334155;
  font-size: 14px;
  font-weight: 700;
  text-align: right;
}
.keyword-suggestion-empty {
  padding: 14px 12px;
  color: #64748b;
  font-size: 14px;
}
.empty-keywords {
  height: 120px;
  color: #64748b;
  font-size: 18px;
  font-weight: 800;
  text-align: center;
}
button {
  height: 32px;
  padding: 0 18px;
  border: 1px solid #d8dee8;
  border-radius: 4px;
  background: #f8fafc;
  color: #334155;
  cursor: pointer;
}
#applyBtn { background: #f8fbff; color: #1f3a63; }
button.ghost { background: #fff; }
.chart-panel {
  margin: 0 0 22px;
  padding: 14px 22px 18px;
  border-left: 0; border-right: 0;
}
.section-head { display: flex; align-items: center; justify-content: flex-start; gap: 18px; margin-bottom: 8px; }
.section-head h2 { margin: 0; font-size: 20px; font-weight: 800; color: #0f172a; }
#trendChart { height: 250px; width: 100%; }
#chartHint {
  margin-top: 0;
  text-align: left;
  color: #0f172a;
  font-size: 20px;
  font-weight: 800;
}
.table-panel {
  margin: 0;
  border-left: 0; border-right: 0;
}
.table-panel button {
  height: 38px;
  font-size: 15px;
  padding: 0 20px;
}
.download-selected {
  color: #0f766e;
  border-color: #99f6e4;
  background: #f0fdfa;
  font-weight: 700;
}
.toolbar {
  height: 98px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 30px 26px;
  border-bottom: 1px solid #e5e7eb;
}
.summary { margin-left: auto; color: #64748b; line-height: 36px; font-size: 16px; }
.table-wrap { overflow: auto; }
table {
  width: 100%;
  min-width: 1480px;
  border-collapse: collapse;
}
.pagination-bar {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 12px 24px;
  border-top: 1px solid #e5e7eb;
  background: #fff;
}
.page-info {
  color: #64748b;
  white-space: nowrap;
  font-size: 16px;
}
.page-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-field {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-field span {
  margin: 0;
  color: #64748b;
  font-size: 15px;
}
.page-field select {
  min-width: 104px;
}
.manual-size input {
  width: 84px;
}
button:disabled {
  cursor: not-allowed;
  opacity: .45;
}
thead th {
  height: 54px;
  background: #f8fafc;
  color: #536784;
  font-weight: 600;
  font-size: 16px;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
  white-space: nowrap;
}
th, td { padding: 0 22px; }
tbody tr {
  height: 124px;
  border-bottom: 1px solid #eef2f7;
  cursor: pointer;
}
tbody tr:hover, tbody tr.selected { background: #fff7f2; }
td { vertical-align: middle; color: #0f172a; font-size: 16px; }
.kw strong { display: block; font-size: 17px; margin-bottom: 7px; }
.kw span, .cat span { display: block; color: #64748b; font-size: 15px; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat { color: #2563eb; }
.rank-cell strong {
  display: inline-block;
  min-width: 44px;
  font-size: 18px;
}
.rank-change {
  display: inline-flex;
  align-items: center;
  margin-left: 10px;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}
.rank-change.up {
  color: #dc2626;
  background: #fee2e2;
}
.rank-change.down {
  color: #15803d;
  background: #dcfce7;
}
.rank-change.flat {
  color: #475569;
  background: #e2e8f0;
}
.rank-change.muted {
  color: #64748b;
  background: #f1f5f9;
  font-weight: 500;
}
.share { font-weight: 700; color: #0f172a; }
.trend-col,
.trend-cell {
  font-size: 16px;
}
.trend-cell {
  min-width: 170px;
}
.spark-wrap {
  width: 150px;
  height: 48px;
  cursor: zoom-in;
}
.spark {
  display: block;
  width: 150px;
  height: 48px;
}
.spark path {
  fill: none;
  stroke: #8b5cf6;
  stroke-width: 2.4;
  vector-effect: non-scaling-stroke;
}
.spark circle {
  fill: #8b5cf6;
  stroke: white;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.spark .empty-line {
  stroke: #cbd5e1;
  stroke-dasharray: 3 3;
}
.spark .spark-x-axis {
  stroke: #cbd5e1;
  stroke-width: 1;
  stroke-dasharray: none;
}
.spark-popover {
  position: fixed;
  z-index: 50;
  width: 25vw;
  min-width: 360px;
  max-width: 520px;
  padding: 12px;
  border: 1px solid #d8dee8;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(15, 23, 42, .18);
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity .12s ease, transform .12s ease;
}
.spark-popover.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.spark-pop-title {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}
.spark-pop-title strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}
.spark-pop-chart {
  width: 100%;
  height: 256px;
  margin: 0;
}
.spark-pop-chart .spark {
  width: 100%;
  height: 256px;
}
.spark-pop-chart circle {
  cursor: crosshair;
  pointer-events: auto;
}
.spark-hit-zone {
  fill: transparent !important;
  opacity: 0;
  cursor: crosshair;
  pointer-events: all;
}
.spark-node-tip {
  position: fixed;
  z-index: 60;
  max-width: 220px;
  padding: 8px 10px;
  border: 1px solid #d8dee8;
  border-radius: 6px;
  background: #fff;
  color: #0f172a;
  box-shadow: 0 10px 28px rgba(15, 23, 42, .18);
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-line;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity .1s ease, transform .1s ease;
}
.spark-node-tip.visible {
  opacity: 1;
  transform: translateY(0);
}
.user-center {
  padding: 18px 12px 36px;
}
.user-panel {
  padding: 26px 32px 34px;
}
.user-head h1 {
  margin: 0 0 10px;
  font-size: 30px;
  color: #0f172a;
}
.user-head p {
  margin: 0;
  color: #64748b;
  font-size: 16px;
}
.user-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.user-card {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 18px;
  background: #fff;
}
.user-card h2 {
  margin: 0 0 8px;
  font-size: 18px;
  color: #0f172a;
}
.user-card p {
  margin: 0;
  color: #64748b;
  line-height: 1.6;
}
.spark-popover table {
  min-width: 0;
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.spark-popover th,
.spark-popover td {
  height: 24px;
  padding: 0 5px;
  border-bottom: 1px solid #eef2f7;
  white-space: nowrap;
}
.spark-popover thead th {
  height: 24px;
  background: #f8fafc;
  color: #64748b;
}
@media (max-width: 1000px) {
  .filter-grid { grid-template-columns: 1fr 1fr; }
  .title-row { flex-wrap: wrap; }
}