/* Kla-Atlas researcher interface. Tokens mirror docs/website_plan_20260908/04_design_tokens.css. */
:root {
  color-scheme: light;
  --ka-bg: #f7f9fc;
  --ka-surface: #ffffff;
  --ka-surface-muted: #eef2f7;
  --ka-text: #0f172a;
  --ka-text-secondary: #475569;
  --ka-text-muted: #64748b;
  --ka-border: #dce4ed;
  --ka-control-border: #64748b;
  --ka-primary: #0f766e;
  --ka-primary-hover: #115e59;
  --ka-on-primary: #ffffff;
  --ka-selected-bg: #e6f3f0;
  --ka-focus: #0f766e;
  --ka-kla: #6d28d9;
  --ka-kla-soft: #f3edff;
  --ka-acetylation: #0f766e;
  --ka-succinylation: #a16207;
  --ka-sumoylation: #1d4ed8;
  --ka-ubiquitination: #be185d;
  --ka-positive-value: #b45309;
  --ka-negative-value: #1d4ed8;
  --ka-zero-value: #e2e8f0;
  --ka-missing-value: #cbd5e1;
  --ka-success-text: #166534;
  --ka-success-bg: #f0fdf4;
  --ka-warning-text: #92400e;
  --ka-warning-bg: #fffbeb;
  --ka-error-text: #b91c1c;
  --ka-error-bg: #fef2f2;
  --ka-info-text: #1e40af;
  --ka-info-bg: #eff6ff;
  --ka-font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ka-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --ka-font-body: 1rem;
  --ka-font-table: 0.875rem;
  --ka-font-caption: 0.8125rem;
  --ka-font-title: 1.75rem;
  --ka-line-height: 1.55;
  --ka-space-1: 0.25rem;
  --ka-space-2: 0.5rem;
  --ka-space-3: 0.75rem;
  --ka-space-4: 1rem;
  --ka-space-6: 1.5rem;
  --ka-space-8: 2rem;
  --ka-space-10: 2.5rem;
  --ka-radius-control: 0.5rem;
  --ka-radius-panel: 0.75rem;
  --ka-radius-popover: 0.75rem;
  --ka-navbar-height: 4rem;
  --ka-control-height: 2.5rem;
  --ka-row-height: 2.75rem;
  --ka-filter-width: 17rem;
  --ka-max-width: 90rem;
  --ka-page-gutter: 1.5rem;
  --ka-shadow-popover: 0 8px 32px rgb(15 23 42 / 12%);
  --ka-motion-fast: 120ms;
  --ka-motion-normal: 180ms;
}

[data-theme="dark"] {
  color-scheme: dark;
  --ka-bg: #0b1220;
  --ka-surface: #121d2e;
  --ka-surface-muted: #1a2940;
  --ka-text: #e8eef7;
  --ka-text-secondary: #b6c4d8;
  --ka-text-muted: #93a6be;
  --ka-border: #2b3d56;
  --ka-control-border: #7187a4;
  --ka-primary: #5eead4;
  --ka-primary-hover: #99f6e4;
  --ka-on-primary: #102522;
  --ka-selected-bg: #193b39;
  --ka-focus: #5eead4;
  --ka-kla: #c4b5fd;
  --ka-kla-soft: #2d2446;
  --ka-acetylation: #5eead4;
  --ka-succinylation: #fcd34d;
  --ka-sumoylation: #93c5fd;
  --ka-ubiquitination: #f9a8d4;
  --ka-positive-value: #fdba74;
  --ka-negative-value: #93c5fd;
  --ka-zero-value: #475569;
  --ka-missing-value: #334155;
  --ka-success-text: #bbf7d0;
  --ka-success-bg: #16372a;
  --ka-warning-text: #fde68a;
  --ka-warning-bg: #3a2c13;
  --ka-error-text: #fecaca;
  --ka-error-bg: #3c1f29;
  --ka-info-text: #bfdbfe;
  --ka-info-bg: #1a3051;
  --ka-shadow-popover: 0 8px 32px rgb(0 0 0 / 35%);
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--ka-bg);
  color: var(--ka-text);
  font-family: var(--ka-font-sans);
  font-size: var(--ka-font-body);
  line-height: var(--ka-line-height);
  text-rendering: optimizeLegibility;
}
body.drawer-open { overflow: hidden; }
a { color: var(--ka-primary); text-decoration-thickness: 0.08em; text-underline-offset: 0.14em; }
a:hover { color: var(--ka-primary-hover); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: 0.52; }
button, input, select, textarea, .button { border-radius: var(--ka-radius-control); }
:focus-visible { outline: 2px solid var(--ka-focus); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; left: 1rem; top: -4rem; padding: 0.65rem 0.9rem; background: var(--ka-primary); color: var(--ka-on-primary); border-radius: 0.5rem; transition: top var(--ka-motion-fast); }
.skip-link:focus { top: 0.75rem; }
.page-width { width: min(100% - (2 * var(--ka-page-gutter)), var(--ka-max-width)); margin-inline: auto; }

.topbar { position: sticky; z-index: 50; top: 0; min-height: var(--ka-navbar-height); background: color-mix(in srgb, var(--ka-surface) 94%, transparent); border-bottom: 1px solid var(--ka-border); backdrop-filter: blur(12px); }
.topbar-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem; min-width: 0; min-height: var(--ka-navbar-height); }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--ka-text); text-decoration: none; flex: 0 0 auto; }
.brand-name { font-size: 1.06rem; font-weight: 750; letter-spacing: -0.02em; }
.brand-mark { display: inline-flex; align-items: baseline; justify-content: center; width: 2.1rem; height: 2.1rem; padding-top: 0.1rem; border-radius: 0.62rem; background: var(--ka-kla); color: var(--ka-on-primary); font-family: Georgia, serif; font-size: 1.15rem; font-weight: 750; box-shadow: 0 0 0 3px color-mix(in srgb, var(--ka-kla) 18%, transparent); }
.brand-mark i { font-size: 0.65rem; font-style: normal; opacity: 0.86; }
.primary-nav { display: flex; flex-wrap: wrap; align-items: stretch; gap: 0.12rem; min-width: 0; margin-left: 0.25rem; flex: 1 1 auto; }
.primary-nav a { display: inline-flex; align-items: center; min-height: 2.65rem; padding: 0.35rem 0.7rem; color: var(--ka-text-secondary); font-size: 0.9rem; text-decoration: none; border-radius: 0.45rem; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--ka-text); background: var(--ka-surface-muted); }
.global-search { display: flex; flex: 1 1 15rem; align-items: center; max-width: 23rem; width: 100%; min-width: 0; margin-left: auto; border: 1px solid var(--ka-control-border); background: var(--ka-surface); }
.global-search input { width: 100%; min-width: 0; height: 2.3rem; padding: 0.35rem 0.75rem; color: var(--ka-text); background: transparent; border: 0; outline: 0; }
.global-search input::placeholder { color: var(--ka-text-muted); }
.search-submit { width: 2.25rem; height: 2.25rem; padding: 0; border: 0; background: transparent; color: var(--ka-primary); font-size: 1.55rem; line-height: 1; }
.topbar-actions { display: flex; align-items: center; gap: 0.2rem; }
.text-button, .icon-button { border: 0; background: transparent; color: var(--ka-text-secondary); }
.text-button { min-height: 2.4rem; padding: 0.35rem 0.5rem; font-size: 0.85rem; }
.text-button:hover, .icon-button:hover { color: var(--ka-text); background: var(--ka-surface-muted); }
.icon-button { display: inline-grid; place-items: center; width: 2.45rem; height: 2.45rem; padding: 0; font-size: 1.1rem; }
.mobile-nav-toggle { display: none; }

.app-region { min-height: calc(100vh - var(--ka-navbar-height) - 7rem); padding-block: 2rem 4rem; }
.render-stage { display: block; min-width: 0; }
.site-footer { border-top: 1px solid var(--ka-border); background: var(--ka-surface); color: var(--ka-text-muted); font-size: 0.82rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-block: 1.15rem; }
.footer-inner strong { color: var(--ka-text-secondary); margin-right: 0.65rem; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.footer-links a { color: var(--ka-text-secondary); }

.eyebrow { margin: 0 0 0.55rem; color: var(--ka-primary); font-size: 0.76rem; font-weight: 750; letter-spacing: 0.12em; text-transform: uppercase; }
h1, h2, h3, h4 { color: var(--ka-text); line-height: 1.2; }
h1 { margin: 0; font-size: clamp(1.9rem, 3vw, 3rem); letter-spacing: -0.035em; }
h2 { margin: 0; font-size: clamp(1.22rem, 2vw, 1.65rem); letter-spacing: -0.02em; }
h3 { margin: 0; font-size: 1.08rem; }
h4 { margin: 0; font-size: 0.94rem; }
p { margin: 0; }
.muted { color: var(--ka-text-muted); }
.secondary { color: var(--ka-text-secondary); }
.caption { color: var(--ka-text-muted); font-size: var(--ka-font-caption); }
.soft-panel .caption, .soft-panel .definition-list > dt { color: var(--ka-text-secondary); }
.mono { font-family: var(--ka-font-mono); font-size: 0.92em; }
.tabular { font-variant-numeric: tabular-nums; }
.stack-1 > * + * { margin-top: 0.25rem; }
.stack-2 > * + * { margin-top: 0.5rem; }
.stack-3 > * + * { margin-top: 0.75rem; }
.stack-4 > * + * { margin-top: 1rem; }
.stack-6 > * + * { margin-top: 1.5rem; }
.cluster { display: flex; align-items: center; flex-wrap: wrap; gap: 0.55rem; }
.cluster-between { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.9rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 2.5rem; gap: 0.4rem; padding: 0.45rem 0.85rem; border: 1px solid var(--ka-control-border); color: var(--ka-text); background: var(--ka-surface); font-size: 0.88rem; font-weight: 650; line-height: 1.2; text-decoration: none; }
.button:hover { color: var(--ka-text); border-color: var(--ka-primary); background: var(--ka-surface-muted); }
.button.primary { color: var(--ka-on-primary); border-color: var(--ka-primary); background: var(--ka-primary); }
.button.primary:hover { color: var(--ka-on-primary); border-color: var(--ka-primary-hover); background: var(--ka-primary-hover); }
.button.subtle { border-color: var(--ka-border); background: var(--ka-surface-muted); color: var(--ka-text-secondary); }
.button.ghost { border-color: transparent; background: transparent; color: var(--ka-primary); }
.button.danger { color: var(--ka-error-text); border-color: color-mix(in srgb, var(--ka-error-text) 38%, var(--ka-border)); }
.button.small { min-height: 2rem; padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.button.icon { width: 2.5rem; padding-inline: 0; }
.link-button { border: 0; padding: 0; background: none; color: var(--ka-primary); text-decoration: underline; text-underline-offset: 0.15em; }
.button:disabled { color: var(--ka-text-muted); }
.panel { background: var(--ka-surface); border: 1px solid var(--ka-border); border-radius: var(--ka-radius-panel); }
.panel.pad { padding: 1.25rem; }
.panel-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding: 1.05rem 1.2rem; border-bottom: 1px solid var(--ka-border); }
.panel-header.compact { align-items: center; padding-block: 0.75rem; }
.panel-body { padding: 1.2rem; }
.panel-body.flush { padding: 0; }
.panel + .panel { margin-top: 1rem; }
.soft-panel { background: var(--ka-surface-muted); border: 1px solid var(--ka-border); border-radius: var(--ka-radius-panel); }
.hero { display: flex; flex-wrap: wrap; align-items: end; gap: 2.5rem; min-width: 0; padding-block: 2.5rem 2.1rem; }
.hero-copy { flex: 1.5 1 28rem; min-width: 0; max-width: 48rem; }
.hero-lede { max-width: 42rem; margin-top: 1rem; color: var(--ka-text-secondary); font-size: 1.05rem; }
.hero-search { display: flex; align-items: center; margin-top: 1.5rem; padding: 0.3rem; background: var(--ka-surface); border: 1px solid var(--ka-control-border); box-shadow: 0 8px 22px rgb(15 23 42 / 7%); }
.hero-search input { width: 100%; min-width: 0; height: 3rem; padding: 0.6rem 0.85rem; border: 0; outline: 0; background: transparent; color: var(--ka-text); }
.hero-search .button { min-height: 3rem; padding-inline: 1.15rem; }
.hero-notes { flex: 1 1 20rem; min-width: 0; padding: 1.2rem; border-left: 3px solid var(--ka-kla); background: var(--ka-kla-soft); border-radius: 0.25rem 0.65rem 0.65rem 0.25rem; }
.hero-notes p { color: var(--ka-text-secondary); font-size: 0.9rem; }
.hero-notes p + p { margin-top: 0.7rem; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr)); gap: 0.75rem; margin-block: 0.7rem 2rem; }
.stat-card { min-height: 7.3rem; padding: 1rem; background: var(--ka-surface); border: 1px solid var(--ka-border); border-radius: 0.65rem; }
.stat-label { color: var(--ka-text-muted); font-size: 0.78rem; }
.stat-value { margin-top: 0.4rem; color: var(--ka-text); font-size: clamp(1.45rem, 2.4vw, 2.1rem); font-weight: 760; letter-spacing: -0.04em; }
.stat-note { margin-top: 0.22rem; color: var(--ka-text-muted); font-size: 0.75rem; }
.section-title { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 0.9rem; }
.section-title p { color: var(--ka-text-secondary); font-size: 0.9rem; }
.workflow-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); gap: 0.75rem; }
.workflow-card { display: flex; flex-direction: column; gap: 0.6rem; min-height: 10rem; padding: 1rem; color: var(--ka-text); background: var(--ka-surface); border: 1px solid var(--ka-border); border-radius: 0.65rem; text-decoration: none; }
.workflow-card:hover { border-color: var(--ka-primary); box-shadow: var(--ka-shadow-popover); }
.workflow-icon { display: inline-grid; place-items: center; width: 2rem; height: 2rem; color: var(--ka-kla); background: var(--ka-kla-soft); border-radius: 0.5rem; font-weight: 800; }
.workflow-card p { color: var(--ka-text-secondary); font-size: 0.85rem; }
.workflow-card small { margin-top: auto; color: var(--ka-primary); font-weight: 650; }
.coverage-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.62fr); gap: 1rem; }
.bar-list { display: grid; gap: 0.8rem; }
.bar-row { display: grid; grid-template-columns: minmax(6rem, 0.32fr) minmax(8rem, 1fr) auto; align-items: center; gap: 0.7rem; font-size: 0.85rem; }
.bar-track { height: 0.55rem; overflow: hidden; border-radius: 999px; background: var(--ka-surface-muted); }
.bar-fill { display: block; height: 100%; border-radius: inherit; background: var(--ka-primary); }
.bar-value { min-width: 3.4rem; text-align: right; font-variant-numeric: tabular-nums; color: var(--ka-text-secondary); }
.status-note { display: flex; gap: 0.55rem; align-items: flex-start; padding: 0.8rem 0.9rem; border-radius: 0.55rem; background: var(--ka-info-bg); color: var(--ka-info-text); font-size: 0.85rem; }
.status-note.warning { background: var(--ka-warning-bg); color: var(--ka-warning-text); }
.status-note.error { background: var(--ka-error-bg); color: var(--ka-error-text); }
.status-note.success { background: var(--ka-success-bg); color: var(--ka-success-text); }
.status-icon { flex: 0 0 auto; font-weight: 800; }

.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; margin-bottom: 1.1rem; color: var(--ka-text-muted); font-size: 0.8rem; }
.breadcrumbs a { color: var(--ka-text-secondary); }
.breadcrumbs .sep { color: var(--ka-text-muted); }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.2rem; }
.page-head-copy { min-width: 0; }
.page-subtitle { margin-top: 0.5rem; color: var(--ka-text-secondary); max-width: 60rem; }
.identity-line { display: flex; flex-wrap: wrap; align-items: center; gap: 0.55rem 0.8rem; margin-top: 0.6rem; color: var(--ka-text-secondary); font-size: 0.91rem; }
.identity-line .dot { color: var(--ka-text-muted); }
.stable-id { display: inline-flex; align-items: center; gap: 0.38rem; padding: 0.27rem 0.5rem; border: 1px solid var(--ka-border); border-radius: 0.35rem; background: var(--ka-surface-muted); color: var(--ka-text-secondary); font-family: var(--ka-font-mono); font-size: 0.76rem; }
.tag-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.tag { display: inline-flex; align-items: center; min-height: 1.6rem; gap: 0.25rem; padding: 0.2rem 0.5rem; border-radius: 999px; background: var(--ka-surface-muted); border: 1px solid var(--ka-border); color: var(--ka-text-secondary); font-size: 0.75rem; }
.tag.kla { color: var(--ka-kla); background: var(--ka-kla-soft); border-color: color-mix(in srgb, var(--ka-kla) 28%, var(--ka-border)); }
.tag.success { color: var(--ka-success-text); background: var(--ka-success-bg); border-color: color-mix(in srgb, var(--ka-success-text) 28%, var(--ka-border)); }
.tag.warning { color: var(--ka-warning-text); background: var(--ka-warning-bg); border-color: color-mix(in srgb, var(--ka-warning-text) 28%, var(--ka-border)); }
.tag.error { color: var(--ka-error-text); background: var(--ka-error-bg); border-color: color-mix(in srgb, var(--ka-error-text) 28%, var(--ka-border)); }
.tag.muted { color: var(--ka-text-muted); }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.65rem; }
.metric { padding: 0.85rem 1rem; border: 1px solid var(--ka-border); border-radius: 0.55rem; background: var(--ka-surface); }
.metric-label { color: var(--ka-text-muted); font-size: 0.76rem; }
.metric-value { margin-top: 0.22rem; color: var(--ka-text); font-size: 1.22rem; font-weight: 720; font-variant-numeric: tabular-nums; }
.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 17.5rem; gap: 1rem; align-items: start; }
.detail-layout.main-wide { grid-template-columns: minmax(0, 1fr); }
.detail-sidebar { position: sticky; top: 5.2rem; }
.detail-sidebar .panel { margin-bottom: 1rem; }
.detail-sidebar-list { display: grid; gap: 0.3rem; }
.detail-sidebar-list a { display: flex; justify-content: space-between; gap: 0.5rem; padding: 0.46rem 0.55rem; color: var(--ka-text-secondary); border-radius: 0.35rem; text-decoration: none; font-size: 0.83rem; }
.detail-sidebar-list a:hover, .detail-sidebar-list a[aria-current="page"] { color: var(--ka-text); background: var(--ka-surface-muted); }

.explore-layout { display: grid; grid-template-columns: var(--ka-filter-width) minmax(0, 1fr); gap: 1rem; align-items: start; }
.filters-panel { position: sticky; top: 5.2rem; }
.filter-toggle { display: none; }
.filter-form { display: grid; gap: 0.8rem; }
.field { display: grid; gap: 0.3rem; min-width: 0; }
.field label, .field legend { color: var(--ka-text-secondary); font-size: 0.79rem; font-weight: 650; }
.field input, .field select, .field textarea { width: 100%; min-height: 2.35rem; padding: 0.4rem 0.6rem; border: 1px solid var(--ka-control-border); background: var(--ka-surface); color: var(--ka-text); outline-color: var(--ka-focus); }
.field textarea { min-height: 8.5rem; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--ka-text-muted); }
.field-hint { color: var(--ka-text-muted); font-size: 0.73rem; }
.range-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 0.45rem; }
.filter-actions { display: flex; gap: 0.45rem; padding-top: 0.25rem; }
.filter-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.75rem; }
.filter-tag { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.25rem 0.48rem; color: var(--ka-text-secondary); background: var(--ka-surface-muted); border: 1px solid var(--ka-border); border-radius: 999px; font-size: 0.75rem; }
.filter-tag button { display: inline-grid; place-items: center; width: 1rem; height: 1rem; padding: 0; border: 0; color: inherit; background: transparent; font-size: 0.85rem; }
.results-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 0.7rem; }
.results-toolbar .result-count { color: var(--ka-text-secondary); font-size: 0.86rem; }
.toolbar-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 0.4rem; }
.toolbar-actions select { min-height: 2.25rem; padding: 0.3rem 0.55rem; border: 1px solid var(--ka-control-border); background: var(--ka-surface); color: var(--ka-text); font-size: 0.82rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--ka-border); border-radius: 0.65rem; background: var(--ka-surface); }
.data-table { width: 100%; min-width: 46rem; border-collapse: collapse; font-size: var(--ka-font-table); }
.data-table th, .data-table td { padding: 0.68rem 0.72rem; border-bottom: 1px solid var(--ka-border); text-align: left; vertical-align: middle; }
.data-table th { color: var(--ka-text-secondary); background: var(--ka-surface-muted); font-size: 0.76rem; font-weight: 720; letter-spacing: 0.015em; white-space: nowrap; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: color-mix(in srgb, var(--ka-surface-muted) 64%, var(--ka-surface)); }
.data-table tbody tr[tabindex="0"]:focus-visible { outline: 2px solid var(--ka-focus); outline-offset: -2px; }
.data-table tbody tr.is-selected { background: var(--ka-selected-bg); }
.data-table .select-cell { width: 2.6rem; padding-right: 0.2rem; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table .site-link { color: var(--ka-text); font-weight: 680; text-decoration: none; }
.data-table .site-link:hover { color: var(--ka-primary); text-decoration: underline; }
.data-table .subline { margin-top: 0.14rem; color: var(--ka-text-muted); font-size: 0.76rem; }
.check { width: 1.05rem; height: 1.05rem; accent-color: var(--ka-primary); }
.empty-state { display: grid; place-items: center; min-height: 15rem; padding: 2rem; text-align: center; background: var(--ka-surface); border: 1px dashed var(--ka-control-border); border-radius: 0.65rem; }
.empty-state p { max-width: 32rem; color: var(--ka-text-secondary); }
.empty-icon { margin-bottom: 0.65rem; color: var(--ka-text-muted); font-size: 2rem; }
.loading-state { padding: 1.6rem; color: var(--ka-text-secondary); background: var(--ka-surface); border: 1px solid var(--ka-border); border-radius: 0.65rem; }
.loading-state::before { content: ""; display: inline-block; width: 1rem; height: 1rem; margin-right: 0.55rem; vertical-align: -0.12rem; border: 2px solid var(--ka-border); border-top-color: var(--ka-primary); border-radius: 50%; animation: spin 0.75s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.pagination { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; padding-top: 0.8rem; }
.pagination-info { color: var(--ka-text-muted); font-size: 0.8rem; }
.pagination-buttons { display: flex; gap: 0.4rem; }

.tabbar { display: flex; overflow-x: auto; gap: 0.2rem; border-bottom: 1px solid var(--ka-border); }
.tabbar button { flex: 0 0 auto; min-height: 2.75rem; padding: 0.45rem 0.75rem; color: var(--ka-text-secondary); border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; font-size: 0.85rem; font-weight: 650; }
.tabbar button:hover { color: var(--ka-text); background: var(--ka-surface-muted); }
.tabbar button[aria-selected="true"] { color: var(--ka-primary); border-bottom-color: var(--ka-primary); }
.detail-tabs { margin-top: 1rem; }
.tab-content { padding-top: 1rem; }
.sequence-window { display: flex; align-items: center; overflow-x: auto; padding: 0.85rem 1rem; background: var(--ka-surface-muted); border: 1px solid var(--ka-border); border-radius: 0.6rem; }
.sequence-window .sequence { min-width: max-content; color: var(--ka-text-secondary); letter-spacing: 0.06em; font-family: var(--ka-font-mono); font-size: 1rem; }
.sequence-window .residue { display: inline-grid; place-items: center; min-width: 1.4em; height: 1.8em; }
.sequence-window .residue.center { color: white; background: var(--ka-kla); border-radius: 0.24rem; font-weight: 800; }
.sequence-window .position-axis { display: flex; justify-content: space-between; min-width: max-content; margin-top: 0.25rem; color: var(--ka-text-secondary); font: 0.72rem var(--ka-font-mono); }
.summary-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.55rem; margin-top: 1rem; }
.summary-item { padding: 0.72rem 0.8rem; background: var(--ka-surface-muted); border-radius: 0.45rem; }
.summary-item dt { color: var(--ka-text-muted); font-size: 0.73rem; }
.summary-item dd { margin: 0.2rem 0 0; color: var(--ka-text); font-weight: 700; font-variant-numeric: tabular-nums; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.definition-list { display: grid; grid-template-columns: minmax(9rem, 0.34fr) minmax(0, 1fr); margin: 0; }
.definition-list > dt, .definition-list > dd { margin: 0; padding: 0.56rem 0; border-bottom: 1px solid var(--ka-border); }
.definition-list > dt { color: var(--ka-text-muted); font-size: 0.8rem; }
.definition-list > dd { color: var(--ka-text); overflow-wrap: anywhere; }
.definition-list > dt:last-of-type, .definition-list > dd:last-of-type { border-bottom: 0; }
.source-chain { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.55rem; align-items: stretch; }
.source-chain-item { position: relative; min-width: 0; padding: 0.7rem; border: 1px solid var(--ka-border); border-radius: 0.55rem; background: var(--ka-surface); }
.source-chain-item:not(:last-child)::after { content: "→"; position: absolute; right: -0.68rem; top: 50%; z-index: 1; color: var(--ka-text-muted); background: var(--ka-surface); transform: translateY(-50%); }
.source-chain-kicker { color: var(--ka-text-muted); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.07em; }
.source-chain-item strong { display: block; margin-top: 0.2rem; color: var(--ka-text); font-size: 0.86rem; overflow-wrap: anywhere; }
.source-chain-item a { display: block; margin-top: 0.18rem; font-size: 0.76rem; overflow-wrap: anywhere; }
.method-groups { display: grid; gap: 0.65rem; }
.method-group { border: 1px solid var(--ka-border); border-radius: 0.55rem; overflow: hidden; }
.method-group summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 0.72rem 0.85rem; cursor: pointer; color: var(--ka-text); background: var(--ka-surface-muted); font-weight: 700; }
.method-group summary::marker { color: var(--ka-primary); }
.method-count { color: var(--ka-text-muted); font-size: 0.75rem; font-weight: 500; }
.method-list { display: grid; }
.method-row { display: grid; grid-template-columns: minmax(9rem, 0.37fr) minmax(0, 1fr) auto; gap: 0.8rem; align-items: start; padding: 0.72rem 0.85rem; border-top: 1px solid var(--ka-border); }
.method-field { color: var(--ka-text-secondary); font-size: 0.8rem; }
.method-value { color: var(--ka-text); overflow-wrap: anywhere; }
.method-raw { margin-top: 0.25rem; color: var(--ka-text-muted); font-size: 0.77rem; }
.method-status { justify-self: end; white-space: nowrap; }
.disclosure { border: 1px solid var(--ka-border); border-radius: 0.55rem; overflow: hidden; }
.disclosure + .disclosure { margin-top: 0.55rem; }
.disclosure summary { padding: 0.7rem 0.85rem; cursor: pointer; background: var(--ka-surface-muted); font-weight: 650; }
.disclosure-body { padding: 0.85rem; }

.track-toolbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.7rem; padding: 0.8rem 0.95rem; border-bottom: 1px solid var(--ka-border); }
.track-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 0.7rem; }
.track-controls label { color: var(--ka-text-secondary); font-size: 0.79rem; }
.track-controls input[type="range"] { accent-color: var(--ka-primary); vertical-align: middle; }
.track-toggles { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.track-toggle { display: inline-flex; align-items: center; gap: 0.28rem; color: var(--ka-text-secondary); font-size: 0.76rem; }
.track-legend { display: flex; align-items: center; flex-wrap: wrap; gap: 0.7rem; padding: 0.55rem 0.95rem; color: var(--ka-text-muted); font-size: 0.75rem; }
.legend-dot { display: inline-block; width: 0.62rem; height: 0.62rem; margin-right: 0.24rem; border-radius: 50%; vertical-align: -0.05rem; }
.legend-dot.kla { background: var(--ka-kla); }
.legend-dot.feature { background: var(--ka-primary); }
.legend-dot.peptide { background: var(--ka-succinylation); }
.track-canvas { overflow-x: auto; padding: 0.45rem 0.6rem 0.7rem; }
.track-canvas svg { display: block; min-width: 40rem; width: 100%; height: auto; }
.track-canvas text { fill: var(--ka-text-secondary); font-family: var(--ka-font-sans); font-size: 11px; }
.track-canvas .axis-label { fill: var(--ka-text-muted); font-family: var(--ka-font-mono); font-size: 10px; }
.track-canvas .row-label { fill: var(--ka-text); font-weight: 650; }
.track-canvas .site-mark { cursor: pointer; fill: var(--ka-kla); stroke: var(--ka-surface); stroke-width: 1.5; }
.track-canvas .site-mark:hover, .track-canvas .site-mark.selected { stroke: var(--ka-primary); stroke-width: 3; }
.track-canvas .feature-mark { fill: color-mix(in srgb, var(--ka-primary) 30%, transparent); stroke: var(--ka-primary); }
.track-canvas .peptide-mark { fill: color-mix(in srgb, var(--ka-succinylation) 34%, transparent); stroke: var(--ka-succinylation); }
.track-canvas .structure-mark { fill: color-mix(in srgb, var(--ka-sumoylation) 30%, transparent); stroke: var(--ka-sumoylation); }
.track-none { padding: 1rem; color: var(--ka-text-secondary); background: var(--ka-surface-muted); border-radius: 0.5rem; }
.sites-table { margin-top: 1rem; }

.drawer-backdrop { position: fixed; inset: 0; z-index: 100; background: rgb(15 23 42 / 36%); animation: fade-in var(--ka-motion-fast) ease-out; }
.drawer { position: fixed; z-index: 101; top: 0; right: 0; display: flex; flex-direction: column; width: min(39rem, 100vw); height: 100dvh; background: var(--ka-surface); box-shadow: -12px 0 42px rgb(15 23 42 / 18%); animation: slide-in var(--ka-motion-normal) ease-out; }
.drawer-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding: 1.2rem; border-bottom: 1px solid var(--ka-border); }
.drawer-body { flex: 1 1 auto; overflow-y: auto; padding: 1.2rem; }
.drawer-footer { display: flex; justify-content: flex-end; gap: 0.45rem; padding: 0.85rem 1.2rem; border-top: 1px solid var(--ka-border); }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes slide-in { from { transform: translateX(100%); } to { transform: translateX(0); } }
.dialog-backdrop { position: fixed; inset: 0; z-index: 110; display: grid; place-items: center; padding: 1rem; background: rgb(15 23 42 / 48%); }
.dialog { width: min(33rem, 100%); max-height: min(90vh, 50rem); overflow-y: auto; background: var(--ka-surface); border: 1px solid var(--ka-border); border-radius: 0.75rem; box-shadow: var(--ka-shadow-popover); }
.dialog-header, .dialog-body, .dialog-footer { padding: 1rem 1.15rem; }
.dialog-header { display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--ka-border); }
.dialog-footer { display: flex; justify-content: flex-end; gap: 0.45rem; border-top: 1px solid var(--ka-border); }
.json-block { max-height: 24rem; overflow: auto; padding: 0.8rem; border-radius: 0.45rem; color: var(--ka-text-secondary); background: var(--ka-surface-muted); font: 0.75rem/1.5 var(--ka-font-mono); white-space: pre-wrap; overflow-wrap: anywhere; }

.batch-grid, .compare-grid { display: grid; grid-template-columns: minmax(0, 0.74fr) minmax(0, 1.26fr); gap: 1rem; align-items: start; }
.batch-input { min-height: 16rem; }
.batch-results { min-width: 0; }
.match-list { display: grid; gap: 0.45rem; }
.match-row { display: grid; grid-template-columns: 2.1rem minmax(0, 1fr) auto; gap: 0.55rem; align-items: start; padding: 0.7rem; border: 1px solid var(--ka-border); border-radius: 0.5rem; }
.match-line { color: var(--ka-text-muted); font: 0.78rem var(--ka-font-mono); }
.match-input { overflow-wrap: anywhere; color: var(--ka-text); font-family: var(--ka-font-mono); font-size: 0.82rem; }
.match-basis { margin-top: 0.18rem; color: var(--ka-text-secondary); font-size: 0.78rem; }
.candidate-bar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.7rem; padding: 0.7rem 0.8rem; margin-bottom: 0.8rem; border: 1px solid color-mix(in srgb, var(--ka-primary) 32%, var(--ka-border)); border-radius: 0.55rem; background: var(--ka-selected-bg); }
.compare-kind-tabs { margin-bottom: 0.9rem; }
.compare-columns { display: grid; grid-template-columns: repeat(var(--compare-cols, 3), minmax(14rem, 1fr)); gap: 0.65rem; overflow-x: auto; }
.compare-column { min-width: 14rem; padding: 0.75rem; border: 1px solid var(--ka-border); border-radius: 0.55rem; background: var(--ka-surface); }
.compare-column h3 { font-size: 0.9rem; }
.compare-field { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 0.6rem; padding: 0.55rem 0; border-bottom: 1px solid var(--ka-border); }
.compare-field:last-child { border-bottom: 0; }
.compare-field dt { color: var(--ka-text-muted); font-size: 0.74rem; }
.compare-field dd { margin: 0; color: var(--ka-text); font-size: 0.81rem; overflow-wrap: anywhere; }

.stat-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.stat-figure { min-height: 20rem; }
.stat-bars { display: grid; gap: 0.58rem; margin-top: 0.85rem; }
.stat-bar-row { display: grid; grid-template-columns: minmax(5.4rem, 0.42fr) minmax(6rem, 1fr) minmax(3.2rem, auto); gap: 0.6rem; align-items: center; font-size: 0.8rem; }
.stat-bar-row .label { overflow-wrap: anywhere; color: var(--ka-text-secondary); }
.stat-bar-row .value { text-align: right; color: var(--ka-text-secondary); font-variant-numeric: tabular-nums; }
.download-list { display: grid; gap: 0.65rem; }
.download-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 1rem; padding: 0.95rem 1rem; border: 1px solid var(--ka-border); border-radius: 0.6rem; background: var(--ka-surface); }
.download-item h3 { font-size: 0.96rem; }
.download-item p { margin-top: 0.22rem; color: var(--ka-text-secondary); font-size: 0.82rem; }
.availability-grid { display: grid; gap: 0.48rem; }
.availability-row { display: flex; justify-content: space-between; gap: 0.7rem; padding: 0.56rem 0; border-bottom: 1px solid var(--ka-border); font-size: 0.82rem; }
.availability-row:last-child { border-bottom: 0; }
.availability-row dt { color: var(--ka-text-secondary); }
.availability-row dd { margin: 0; color: var(--ka-text); text-align: right; }

.not-found { display: grid; place-items: center; min-height: 38vh; text-align: center; }
.not-found-code { color: var(--ka-kla); font: 700 4rem/1 var(--ka-font-mono); }
.error-page { max-width: 42rem; margin-inline: auto; }
.error-page .status-note { margin-top: 1rem; }
.error-detail { margin-top: 0.55rem; font: 0.76rem var(--ka-font-mono); overflow-wrap: anywhere; }

@media (max-width: 70rem) {
  .primary-nav { margin-left: 0; }
  .primary-nav a { padding-inline: 0.5rem; }
  .stats-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .workflow-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { gap: 2rem; }
}
@media (max-width: 58rem) {
  .topbar-inner { display: flex; flex-wrap: wrap; gap: 0.5rem; padding-block: 0.45rem; }
  .mobile-nav-toggle { display: inline-grid; margin-left: auto; }
  .primary-nav { display: none; order: 5; width: 100%; padding: 0.25rem 0 0.45rem; border-top: 1px solid var(--ka-border); }
  .primary-nav.is-open { display: flex; flex-wrap: wrap; }
  .primary-nav a { min-height: 2.35rem; }
  .global-search { order: 4; width: 100%; max-width: none; flex-basis: 100%; margin-left: 0; }
  .topbar-actions { margin-left: 0; }
  .hero { grid-template-columns: 1fr; padding-block: 1.5rem 1.3rem; }
  .detail-layout, .explore-layout { grid-template-columns: 1fr; }
  .filters-panel { position: static; }
  .filters-panel .panel-body { display: none; }
  .filters-panel.is-open .panel-body { display: block; }
  .filter-toggle { display: inline-flex; }
  .detail-sidebar { position: static; order: 2; }
  .batch-grid, .compare-grid { grid-template-columns: 1fr; }
  .stat-layout { grid-template-columns: 1fr; }
}
@media (max-width: 42rem) {
  :root { --ka-page-gutter: 1rem; }
  .app-region { padding-top: 1.2rem; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .stats-grid, .metric-grid, .summary-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .workflow-grid, .two-col, .three-col, .coverage-grid { grid-template-columns: 1fr; }
  .page-head { align-items: flex-start; }
  .page-head-actions { width: 100%; }
  .page-head-actions .button { flex: 1 1 auto; }
  .panel-header { flex-direction: column; }
  .panel-header.compact { flex-direction: row; }
  .source-chain { grid-template-columns: 1fr; }
  .source-chain-item:not(:last-child)::after { right: auto; left: 50%; top: auto; bottom: -0.85rem; transform: translateX(-50%) rotate(90deg); }
  .method-row { grid-template-columns: 1fr; gap: 0.25rem; }
  .method-status { justify-self: start; }
  .definition-list { grid-template-columns: 1fr; }
  .definition-list > dt { padding-bottom: 0.12rem; border-bottom: 0; }
  .definition-list > dd { padding-top: 0.1rem; }
  .hero-search { flex-direction: column; align-items: stretch; }
  .hero-search .button { width: 100%; }
  .download-item { grid-template-columns: 1fr; }
  .pagination { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  :root { --ka-motion-fast: 0ms; --ka-motion-normal: 0ms; }
}

/* Readable text on muted surfaces; verified in actual light/dark pages. */
body dt, .tag.muted { color: var(--ka-text-secondary) !important; }
@media(max-width:42rem){.stat-value{font-size:1.6rem}.hero-copy,.hero-notes{flex-basis:100%}}