/* =====================================================================
   YUHO Viewer — Editorial Mono palette (mirrors yuho-db search /start)
   ===================================================================== */

:root {
  --bg: #fafaf7;
  --text: #18181b;
  --muted: #71717a;
  --line: #e5e5e5;
  --line-soft: #f0f0eb;
  --accent: #2563eb;
  --hi: #fef08a;          /* highlight / 黄色 */
  --ok: #16a34a;          /* 緑 */
  --warn: #fbbf24;
  --error: #dc2626;
  --max-content: 1280px;
  --pad-x: clamp(14px, 3vw, 24px);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── NAV ───────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 10px var(--pad-x);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.brand {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--text);
  flex-shrink: 0;
}
.brand:hover .brand-mark { background: var(--accent); }
.brand-mark {
  width: 22px; height: 22px;
  background: var(--text); color: var(--bg);
  display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace; font-size: 10px; font-weight: 700;
  flex-shrink: 0;
  transition: background .15s;
}
.brand-name { font-weight: 800; letter-spacing: -0.02em; font-size: 13px; }
.brand-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--muted); border-left: 1px solid #d4d4d8;
  padding-left: 8px; margin-left: 4px;
}
.nav-links { display: flex; gap: 18px; font-size: 12px; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a {
  color: var(--muted); text-decoration: none; padding-bottom: 1px;
  border-bottom: 1px dotted transparent; white-space: nowrap;
}
.nav-links a:hover { color: var(--text); border-bottom-color: var(--text); }
.nav-links a.active { color: var(--text); border-bottom-color: var(--text); }

@media (max-width: 540px) {
  .brand-tag { display: none; }
  .nav-links { gap: 12px; font-size: 11px; }
}

/* ── DROPZONE SCREEN ───────────────────────────────────────────────── */
.dz-screen {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px) var(--pad-x);
}
.dz-head { margin-bottom: 24px; }
.dz-eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted);
  margin: 0;
}
.dz-h1 {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.1;
  margin: 6px 0 8px;
}
.dz-em { color: var(--muted); }
.dz-lede {
  font-size: 13px; color: #52525b; margin: 0; line-height: 1.6;
}

.dz {
  margin-top: 16px;
  border: 2px dashed #c4c4c0;
  background: #fff;
  padding: clamp(28px, 5vw, 48px) 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dz:hover, .dz:focus-visible { border-color: var(--text); }
.dz.dragover {
  border-color: var(--accent);
  background: #eef4ff;
}
.dz-inner { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.dz-icon { color: var(--muted); }
.dz-title {
  font-weight: 700; font-size: 15px; margin: 0;
  letter-spacing: -0.01em;
}
.dz-sub { color: var(--muted); font-size: 12px; margin: 0; }

.btn-primary {
  display: inline-block;
  border: none;
  background: var(--text); color: var(--bg);
  padding: 10px 22px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: opacity .15s, transform .05s;
}
.btn-primary:hover { opacity: 0.88; }
.btn-primary:active { transform: translateY(1px); }
.btn-primary[aria-busy="true"] { opacity: 0.6; cursor: progress; }

.dz-notes {
  list-style: none; padding: 0; margin: 20px 0 0;
  font-size: 12px; color: #52525b;
}
.dz-notes li {
  padding: 6px 0;
  border-top: 1px solid var(--line-soft);
}
.dz-notes li:first-child { border-top: none; }
.dz-note-key {
  display: inline-block; min-width: 96px;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
}
.dz-lock { color: var(--ok); margin-right: 4px; }

/* ── LOADING SCREEN ────────────────────────────────────────────────── */
.ld-screen {
  display: grid; place-items: center;
  min-height: 60vh;
  padding: var(--pad-x);
}
.ld-card {
  width: 100%;
  max-width: 480px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 28px;
}
.ld-title {
  margin: 0 0 14px; font-weight: 700; font-size: 15px;
  letter-spacing: -0.01em;
}
.ld-sub {
  margin: 12px 0 0; font-size: 12px; color: var(--muted);
}
.progress {
  height: 6px; width: 100%;
  background: var(--line-soft);
  overflow: hidden;
  position: relative;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--text);
  transition: width .2s ease-out;
}
.progress-bar.indeterminate {
  width: 30% !important;
  animation: indeterminate 1.2s ease-in-out infinite;
}
@keyframes indeterminate {
  0%   { transform: translateX(-100%); }
  50%  { transform: translateX(150%); }
  100% { transform: translateX(350%); }
}

/* ── ERROR SCREEN ──────────────────────────────────────────────────── */
.err-screen {
  display: grid; place-items: center;
  min-height: 60vh;
  padding: var(--pad-x);
}
.err-card {
  width: 100%; max-width: 520px;
  border: 1px solid var(--error);
  background: #fff;
  padding: 28px;
  text-align: left;
}
.err-icon {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px;
  background: var(--error); color: #fff;
  font-family: 'JetBrains Mono', monospace; font-weight: 700;
  margin: 0 0 12px;
}
.err-title {
  font-size: 16px; margin: 0 0 8px; letter-spacing: -0.01em;
}
.err-detail {
  font-size: 13px; color: #52525b; margin: 0 0 18px;
  white-space: pre-wrap; word-break: break-word;
}

/* ── PREVIEW SCREEN ────────────────────────────────────────────────── */
.pv-screen {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 20px var(--pad-x) 60px;
}

.pv-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
  margin-bottom: 22px;
}
.pv-company {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800; letter-spacing: -0.02em;
  margin: 0 0 6px;
}
.pv-meta {
  display: flex; flex-wrap: wrap; gap: 14px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--muted);
  margin: 0 0 12px;
}
.pv-meta b { color: var(--text); font-weight: 600; }
.pv-controls {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 12px 0 0;
}
.btn-mini {
  border: 1px solid var(--line);
  background: #fff; color: var(--text);
  padding: 6px 12px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.btn-mini:hover { border-color: var(--text); background: var(--bg); }
.btn-mini[aria-pressed="true"] {
  background: var(--text); color: var(--bg);
  border-color: var(--text);
}

.pv-actions {
  display: flex; flex-wrap: wrap;
  gap: 18px; row-gap: 10px;
  align-items: center;
  margin: 12px 0 0;
}
.pv-toggles {
  display: flex; flex-wrap: wrap; gap: 14px;
  font-size: 12px;
  color: #52525b;
}
.pv-toggles label {
  display: inline-flex; align-items: center; gap: 6px;
  cursor: pointer;
  user-select: none;
}
.pv-toggles input[type="checkbox"] {
  margin: 0;
  accent-color: var(--text);
  cursor: pointer;
}

.pv-footer-badges {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 12px 0 0;
}
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line);
  padding: 3px 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: #fff;
}
.badge b { color: var(--text); font-weight: 600; }
.badge.badge-ok { border-color: var(--ok); color: var(--ok); }
.badge.badge-warn { border-color: var(--warn); color: #92400e; }
.badge.badge-err { border-color: var(--error); color: var(--error); }

/* ── PV BODY 2-col layout ──────────────────────────────────────────── */
.pv-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}
.pv-toc {
  position: sticky;
  top: 60px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  border-right: 1px solid var(--line);
  padding-right: 14px;
}
.pv-toc-title {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted);
  margin: 0 0 10px;
}
.pv-toc ol {
  list-style: none; padding: 0; margin: 0;
}
.pv-toc li { margin: 0; }
.pv-toc a {
  display: block;
  padding: 5px 0;
  font-size: 12px;
  color: #52525b;
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  line-height: 1.4;
}
.pv-toc a:hover, .pv-toc a.active {
  color: var(--text);
  background: var(--line-soft);
  padding-left: 6px;
}
.pv-toc-kind {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace; font-size: 9px;
  color: var(--muted); margin-right: 6px;
}

@media (max-width: 860px) {
  .pv-body { grid-template-columns: 1fr; gap: 16px; }
  .pv-toc {
    position: static; max-height: none;
    border-right: none; border-bottom: 1px solid var(--line);
    padding-right: 0; padding-bottom: 12px;
  }
}

.pv-content { min-width: 0; }

/* ── SECTION CARD ──────────────────────────────────────────────────── */
.sec {
  border: 1px solid var(--line);
  background: #fff;
  padding: 18px 20px;
  margin: 0 0 16px;
  scroll-margin-top: 70px;
}
.sec > header {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 10px;
  margin-bottom: 12px;
}
.sec h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.sec-chapter {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.05em; color: var(--muted);
  margin-top: 4px;
}

/* ── Multi-parts (1 セクション = 複数 part) ───────────────────────── */
.sec-multi > .part {
  border-top: 1px dashed var(--line);
  padding-top: 14px;
  margin-top: 14px;
}
.sec-multi > .part:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.part-title {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
  letter-spacing: -0.005em;
}
.sec-kind-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.08em;
  background: var(--line-soft);
  color: var(--muted);
  padding: 1px 6px;
  margin-left: 8px;
  vertical-align: middle;
}
.sec-stub {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px dashed var(--line);
}

/* ── TABLE styles (used by future kind renderers) ──────────────────── */
.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.tbl th, .tbl td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
.tbl th {
  font-weight: 600;
  background: var(--bg);
  font-size: 12px;
  letter-spacing: 0.02em;
}
.tbl td.num, .tbl th.num {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
}
.tbl td.ind, .ind {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.row-unit {
  margin-left: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--muted);
}
.empty {
  margin: 8px 0;
  padding: 12px 14px;
  font-size: 12px;
  color: var(--muted);
  background: var(--bg);
  border: 1px dashed var(--line);
  font-family: 'JetBrains Mono', monospace;
}

/* ── SEC header layout (title + actions + meta) ────────────────────── */
.sec-title-row {
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
}
.sec-meta {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.05em; color: var(--muted);
  margin-top: 4px;
}
.sec-actions { display: inline-flex; gap: 6px; flex-shrink: 0; }

/* ── kind A: pivot table ───────────────────────────────────────────── */
.tbl-pivot th:first-child, .tbl-pivot td:first-child {
  position: sticky; left: 0;
  background: #fff;
  min-width: 200px;
}
.tbl-pivot thead th { background: var(--bg); }
.tbl-pivot th:not(:first-child), .tbl-pivot td:not(:first-child) {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
}

/* ── kind B: KV table ──────────────────────────────────────────────── */
.tbl-kv td:first-child { min-width: 240px; }

/* ── kind C: text block + 折りたたみ ───────────────────────────────── */
.c-preview {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  margin: 4px 0 8px;
  white-space: pre-wrap;
  word-break: break-word;
}
.c-full {
  margin-top: 8px;
  border-top: 1px dashed var(--line);
  padding-top: 8px;
}
.c-full > summary {
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 4px 0;
  list-style: none;
  user-select: none;
}
.c-full > summary::-webkit-details-marker { display: none; }
.c-full > summary::before { content: '▸ '; display: inline-block; transition: transform .15s; }
.c-full[open] > summary::before { transform: rotate(90deg); }
.c-full > summary:hover { color: var(--text); }
.c-full-body {
  margin-top: 10px;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 60vh;
  overflow-y: auto;
}

/* ── kind D: tabs + table ──────────────────────────────────────────── */
.tabs {
  display: flex; flex-wrap: wrap; gap: 4px;
  margin: 4px 0 10px;
  border-bottom: 1px solid var(--line);
}
.tab {
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  color: var(--muted);
  padding: 6px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text); background: var(--line-soft); }
.tab.active {
  color: var(--text);
  background: #fff;
  border-color: var(--line);
  border-bottom-color: #fff;
  font-weight: 600;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tbl-d td { font-size: 12px; }
.tbl-d td:nth-child(3) {
  font-family: 'JetBrains Mono', monospace;
  text-align: right;
}

/* ── kind E: KV strip ──────────────────────────────────────────────── */
.kv-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px 18px;
}
.kv {
  display: flex; gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 12px;
}
.kv .k {
  color: var(--muted);
  flex-shrink: 0;
  min-width: 120px;
}
.kv .v {
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  word-break: break-word;
}

/* ── raw section ───────────────────────────────────────────────────── */
.raw-filter {
  border: 1px solid var(--line);
  background: #fff;
  padding: 6px 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  min-width: 200px;
  color: var(--text);
}
.raw-filter:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
  border-color: var(--text);
}
.tbl-raw {
  font-size: 11px;
}
.tbl-raw td {
  font-family: 'JetBrains Mono', monospace;
  word-break: break-all;
}

/* ── Q5: 4-mode view filters (data-view on <body>) ─────────────────── */
/* default: data-view="overview" → meta + data + text を表示 / raw を隠す */
body[data-view="overview"] .sec[data-type="raw"],
body[data-view="overview"] .sec-group-separator[data-group="raw"] { display: none; }

body[data-view="data"] .sec[data-type="text"],
body[data-view="data"] .sec[data-type="raw"],
body[data-view="data"] .sec-group-separator[data-group="text"],
body[data-view="data"] .sec-group-separator[data-group="raw"] { display: none; }

body[data-view="text"] .sec[data-type="data"],
body[data-view="text"] .sec[data-type="raw"],
body[data-view="text"] .sec-group-separator[data-group="data"],
body[data-view="text"] .sec-group-separator[data-group="raw"] { display: none; }

body[data-view="raw"] .sec[data-type="data"],
body[data-view="raw"] .sec[data-type="text"],
body[data-view="raw"] .sec[data-type="meta"],
body[data-view="raw"] .sec-group-separator[data-group="data"],
body[data-view="raw"] .sec-group-separator[data-group="text"],
body[data-view="raw"] .sec-group-separator[data-group="meta"] { display: none; }

/* Q5: View mode radio group UI */
.view-mode-group {
  display: inline-flex; gap: 12px; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: #fff;
  letter-spacing: 0.04em;
}
.view-mode-group label {
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 4px;
}
.view-mode-group input[type="radio"] {
  margin: 0;
  accent-color: var(--text);
  cursor: pointer;
}

/* Q5: TOC グループ */
.pv-toc nav { display: block; }
.toc-group { margin-bottom: 16px; }
.toc-group:last-child { margin-bottom: 0; }
.toc-group-head {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 4px 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.toc-count { color: var(--muted); font-weight: 400; }
.toc-group-body { display: flex; flex-direction: column; gap: 2px; }
.toc-item {
  display: block;
  padding: 4px 8px;
  font-size: 12px;
  color: #52525b;
  text-decoration: none;
  border-left: 2px solid transparent;
  line-height: 1.45;
  word-break: break-word;
}
.toc-item:hover {
  background: var(--line-soft);
  color: var(--text);
  text-decoration: none;
  border-left-color: var(--line);
}
.toc-item.active {
  border-left-color: var(--accent);
  color: var(--text);
  font-weight: 600;
}

/* Q5: ビューモードで隠す TOC 項目 */
body[data-view="overview"] .toc-group-raw,
body[data-view="overview"] .toc-item[data-section-type="raw"] { display: none; }
body[data-view="data"] .toc-item[data-section-type="text"],
body[data-view="data"] .toc-item[data-section-type="raw"],
body[data-view="data"] .toc-group-text,
body[data-view="data"] .toc-group-raw { display: none; }
body[data-view="text"] .toc-item[data-section-type="data"],
body[data-view="text"] .toc-item[data-section-type="raw"],
body[data-view="text"] .toc-group-data,
body[data-view="text"] .toc-group-raw { display: none; }
body[data-view="raw"] .toc-group-data,
body[data-view="raw"] .toc-group-text,
body[data-view="raw"] .toc-group-meta { display: none; }

/* Q5: セクション間グループ区切り (data → text の境界等) */
.sec-group-separator {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 36px 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--text);
}
.sec-group-separator:first-child { margin-top: 0; }

/* Q5: 全テキスト展開モード */
body.text-expand .c-full { display: block !important; }
body.text-expand .c-full > summary { display: none; }
body.text-expand .c-full-body { max-height: none; overflow: visible; }

/* Q5: 印刷 (PDF 化) */
@media print {
  .pv-toc, .pv-actions, .pv-toggles, .view-mode-group, .nav, .ft, .sec-actions, .raw-filter { display: none !important; }
  .pv-body { display: block; }
  .pv-content { min-width: 0; }
  body { background: #fff; }
  .sec { page-break-inside: avoid; break-inside: avoid; box-shadow: none; }
  body .c-full { display: block !important; }
  body .c-full > summary { display: none; }
  body .c-full-body { max-height: none; overflow: visible; border: none; padding: 0; background: transparent; }
  body[data-view="raw"] .sec[data-type="raw"] { display: block !important; }
}

.element-id {
  display: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  margin-left: 8px;
  letter-spacing: 0;
  word-break: break-all;
}
body.show-eid .element-id { display: inline; }

mark.hi {
  background: var(--hi);
  color: var(--text);
  padding: 0 2px;
}

/* ── FOOTER ────────────────────────────────────────────────────────── */
.ft {
  border-top: 1px solid var(--line);
  padding: 16px var(--pad-x);
  display: flex; flex-wrap: wrap;
  justify-content: space-between; gap: 12px;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--muted);
}
.ft a { color: var(--muted); text-decoration: none; border-bottom: 1px dotted transparent; }
.ft a:hover { color: var(--text); border-bottom-color: var(--text); }

/* ── A11y: reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .progress-bar { transition: none; }
  .progress-bar.indeterminate { animation: none; }
  .btn-primary, .btn-mini, .brand-mark { transition: none; }
}

/* ── Mobile shim ───────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .pv-header { padding-bottom: 14px; margin-bottom: 16px; }
  .pv-meta { font-size: 10px; gap: 10px; }
  .sec { padding: 14px 14px; }
  .dz-note-key { min-width: 76px; }
  .pv-actions { flex-direction: column; align-items: flex-start; gap: 10px; }
  .sec-title-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .tbl-pivot th:first-child, .tbl-pivot td:first-child {
    position: static;
    min-width: 0;
  }
  .raw-filter { width: 100%; min-width: 0; }
}

/* =====================================================================
   TABBAR (Viewer / About switch)
   ===================================================================== */
.tabbar {
  position: sticky;
  top: 43px; /* under nav (height ≈ 42px) */
  z-index: 45;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.tabbar-inner {
  display: flex;
  gap: 0;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.tab {
  appearance: none;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  padding: 12px 18px 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: 'Inter', sans-serif;
  transition: color .15s, border-color .15s, background .15s;
}
.tab:hover { color: var(--text); background: rgba(0,0,0,0.025); }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.tab[aria-selected="true"] {
  color: var(--text);
  border-bottom-color: var(--text);
}
.tab-mark {
  display: inline-grid; place-items: center;
  width: 18px; height: 18px;
  border: 1px solid currentColor;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0;
  transform: translateY(2px);
}
.tab[aria-selected="true"] .tab-mark {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.tab-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.tab-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}
.tab[aria-selected="true"] .tab-sub { color: var(--text); }
@media (max-width: 640px) {
  .tabbar-inner { padding: 0 8px; }
  .tab { padding: 10px 12px; gap: 8px; }
  .tab-sub { display: none; }
}

/* tab panels */
.tab-panel { display: block; }
.tab-panel[hidden] { display: none !important; }

/* =====================================================================
   ABOUT PANEL (explanation, why, privacy, builder)
   ===================================================================== */
.about-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) var(--pad-x) 8px;
}

/* lead */
.about-lead {
  border-bottom: 1px solid var(--line);
  padding-bottom: clamp(28px, 4vw, 40px);
  margin-bottom: clamp(28px, 4vw, 40px);
}
.about-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 16px;
}
.about-h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin: 0 0 18px;
  color: var(--text);
  max-width: 18ch;
}
.about-em {
  background: linear-gradient(180deg, transparent 62%, var(--hi) 62%, var(--hi) 92%, transparent 92%);
  padding: 0 4px;
  margin: 0 -4px;
}
.about-lede {
  font-size: clamp(14px, 1.5vw, 16px);
  color: #52525b;
  max-width: 640px;
  line-height: 1.7;
  margin: 0 0 22px;
}
.about-lede strong { color: var(--text); font-weight: 700; }
.about-cta-row {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.about-cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--text);
  color: var(--bg);
  border: none;
  padding: 12px 22px;
  font-size: 13.5px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: opacity .15s, transform .05s;
}
.about-cta-primary:hover { opacity: 0.9; }
.about-cta-primary:active { transform: translateY(1px); }
.about-cta-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.about-cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 12.5px;
  text-decoration: none;
  border-bottom: 1px dotted var(--line);
  padding-bottom: 1px;
  transition: color .15s, border-color .15s;
}
.about-cta-secondary:hover { color: var(--text); border-bottom-color: var(--text); }

/* sections */
.about-section {
  padding: clamp(28px, 4vw, 40px) 0;
  border-bottom: 1px solid var(--line);
}
.about-section:last-of-type { border-bottom: none; }
.about-section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}
.about-section-h2 {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin: 0 0 16px;
  color: var(--text);
}
.about-section-body {
  font-size: 14px;
  color: #52525b;
  line-height: 1.75;
  max-width: 720px;
  margin: 0 0 12px;
}
.about-section-body strong { color: var(--text); font-weight: 700; }

/* steps grid */
.about-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  background: #fff;
}
@media (max-width: 720px) {
  .about-steps { grid-template-columns: 1fr; }
}
.about-step {
  padding: 24px 22px 22px;
  border-right: 1px solid var(--line);
}
.about-step:last-child { border-right: none; }
@media (max-width: 720px) {
  .about-step { border-right: none; border-bottom: 1px solid var(--line); }
  .about-step:last-child { border-bottom: none; }
}
.about-step-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}
.about-step-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
  color: var(--text);
}
.about-step-body {
  font-size: 13px;
  color: #52525b;
  line-height: 1.65;
  margin: 0;
}
.about-step-body strong { color: var(--text); font-weight: 600; }

/* dark section (Why) — pulled outside .about-wrap visually via negative margin */
.about-section-dark {
  background: #18181b;
  color: #fafaf7;
  margin: clamp(28px, 4vw, 40px) calc(-1 * var(--pad-x));
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
  border-bottom: 1px solid #27272a;
  border-top: 1px solid #27272a;
}
.about-section-dark .about-section-label { color: #a1a1aa; }
.about-section-dark .about-section-h2 { color: #fafaf7; }
.about-section-dark .about-section-body { color: #a1a1aa; }
.about-section-dark .about-section-body strong { color: var(--hi); }

/* amber section (Privacy & Disclaimer) */
.about-section-amber {
  background: #fffbeb;
  border-top: 3px solid var(--warn);
  margin: 0 calc(-1 * var(--pad-x));
  padding: clamp(24px, 3vw, 32px) var(--pad-x);
}
.about-section-amber .about-section-label-amber { color: #92400e; }
.about-section-amber .about-section-h2 { color: #78350f; }
.about-bullet-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13.5px;
  color: #78350f;
  line-height: 1.75;
}
.about-bullet-list li {
  padding: 8px 0;
  border-top: 1px solid #fde68a;
}
.about-bullet-list li:first-child { border-top: none; }
.about-bullet-list strong { color: #92400e; font-weight: 700; }
.about-bullet-list a { color: #92400e; text-decoration: underline; }

/* builder */
.about-builder { border-bottom: none; }
.about-builder-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  align-items: center;
}
@media (max-width: 640px) {
  .about-builder-grid { grid-template-columns: 1fr; gap: 16px; }
}
.about-builder-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--text);
  color: var(--bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: background .15s;
}
.about-builder-mark:hover { background: var(--accent); }
.about-builder-text h3 {
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 8px;
  color: var(--text);
}
.about-builder-text p {
  font-size: 13.5px;
  color: #52525b;
  line-height: 1.7;
  margin: 0 0 14px;
  max-width: 540px;
}
.about-builder-text p strong { color: var(--text); font-weight: 700; }
.about-builder-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--text);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  transition: background .15s, color .15s;
}
.about-builder-cta:hover { background: var(--text); color: var(--bg); }