:root {
  --bg: #f7f7f5; --panel: #ffffff; --ink: #1d1d1b; --muted: #6b6b66; --line: #e3e2dd;
  --err: #c62828; --err-bg: #fdecea; --warn: #9a6700; --warn-bg: #fff6d6;
  --ok: #1b7f3b; --ok-bg: #e5f5ea; --accent: #2457c5; --code-bg: #ffffff;
  --tag: #1f4fbf; --attr: #7a3e9d; --val: #0b7a52; --comment: #8a8a85; --gap: #b04a00;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615; --panel: #1f1f1d; --ink: #ecebe6; --muted: #9c9b95; --line: #33332f;
    --err: #ff6b6b; --err-bg: #3a1d1d; --warn: #f0c14b; --warn-bg: #362d12;
    --ok: #5fd08a; --ok-bg: #173323; --accent: #7aa2ff; --code-bg: #1a1a18;
    --tag: #7aa2ff; --attr: #d19bf2; --val: #6fd3a8; --comment: #7c7b75; --gap: #ff9a4d;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.wrap { max-width: 1400px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 20px; margin: 0 0 4px; }
.sub { color: var(--muted); margin: 0 0 16px; max-width: 80ch; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }

#drop { border: 2px dashed var(--line); border-radius: 10px; background: var(--panel);
  padding: 22px; text-align: center; transition: border-color .15s, background .15s; }
#drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--panel)); }
#drop p { margin: 0 0 10px; }
button, .btn { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  border-radius: 6px; padding: 5px 11px; cursor: pointer; }
button:hover, .btn:hover { border-color: var(--accent); }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
input[type=file] { display: none; }

#summary { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 16px 0 10px; }
.badge { border-radius: 999px; padding: 3px 11px; font-weight: 600; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.err { background: var(--err-bg); color: var(--err); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.spacer { flex: 1; }
label.toggle { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); cursor: pointer; }

#rules { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip { border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; background: var(--panel);
  cursor: pointer; font-size: 12.5px; }
.chip.ERROR { border-color: color-mix(in srgb, var(--err) 45%, var(--line)); }
.chip.WARN { border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); }
.chip.off { opacity: .45; filter: grayscale(70%); text-decoration: line-through; }
.chip b { font-weight: 600; }

#tabs { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line); }
.tab { border: 1px solid var(--line); border-bottom: none; border-radius: 8px 8px 0 0; padding: 6px 12px;
  background: var(--bg); cursor: pointer; display: flex; gap: 8px; align-items: center; }
.tab.active { background: var(--panel); font-weight: 600; margin-bottom: -1px; padding-bottom: 7px; }
.tab .n { font-size: 11.5px; border-radius: 999px; padding: 0 7px; }
.tab .n.e { background: var(--err-bg); color: var(--err); }
.tab .n.w { background: var(--warn-bg); color: var(--warn); }
.tab .x { color: var(--muted); border: none; background: none; padding: 0 2px; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 0;
  background: var(--panel); border: 1px solid var(--line); border-top: none; border-radius: 0 0 10px 10px; }
@media (max-width: 1000px) { .layout { grid-template-columns: 1fr; } #side { border-left: none; border-top: 1px solid var(--line); max-height: 40vh; } }
#codewrap { position: relative; overflow: auto; max-height: calc(100vh - 230px); min-height: 300px; background: var(--code-bg); border-radius: 0 0 0 10px; }
#code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px;
  line-height: 1.55; padding: 6px 0; min-width: max-content; }
.ln { display: grid; grid-template-columns: 56px 1fr; }
.ln .no { color: var(--muted); text-align: right; padding-right: 12px; user-select: none; border-right: 1px solid var(--line); }
.ln .src { white-space: pre; padding-left: 12px; padding-right: 16px; }
.ln.hasERROR { background: var(--err-bg); }
.ln.hasERROR .no { color: var(--err); font-weight: 700; border-right: 3px solid var(--err); }
.ln.hasWARN { background: var(--warn-bg); }
.ln.hasWARN .no { color: var(--warn); font-weight: 700; border-right: 3px solid var(--warn); }
.ln.flash { outline: 2px solid var(--accent); outline-offset: -2px; }
.notes { grid-column: 2; padding: 2px 16px 6px 12px; white-space: normal; font-family: system-ui, sans-serif; font-size: 13px; }
.note { border-left: 3px solid; border-radius: 4px; padding: 5px 9px; margin: 3px 0; background: var(--panel); max-width: 110ch; }
.note.ERROR { border-color: var(--err); }
.note.WARN { border-color: var(--warn); }
.note .rid { font-family: ui-monospace, Menlo, monospace; font-size: 12px; font-weight: 700; margin-right: 6px; }
.note.ERROR .rid { color: var(--err); }
.note.WARN .rid { color: var(--warn); }
.note .why { color: var(--muted); display: block; margin-top: 2px; }
.note .where { color: var(--muted); font-family: ui-monospace, Menlo, monospace; font-size: 11.5px; display: block; overflow-wrap: anywhere; }
.t-tag { color: var(--tag); } .t-attr { color: var(--attr); } .t-val { color: var(--val); }
.t-com { color: var(--comment); font-style: italic; } .t-gap { color: var(--gap); font-style: normal; font-weight: 600; }

#side { border-left: 1px solid var(--line); overflow: auto; max-height: calc(100vh - 230px); }
#side h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 12px 14px 6px; }
.nav { display: flex; gap: 6px; margin: 0 14px 8px; }
.item { padding: 7px 14px; border-top: 1px solid var(--line); cursor: pointer; }
.item:hover { background: var(--bg); }
.item .top { display: flex; gap: 8px; align-items: baseline; }
.item .lno { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: var(--muted); min-width: 44px; }
.item .rid { font-family: ui-monospace, Menlo, monospace; font-size: 12px; font-weight: 700; }
.item.ERROR .rid { color: var(--err); } .item.WARN .rid { color: var(--warn); }
.item .msg { font-size: 13px; }
.empty { color: var(--muted); padding: 14px; }
.filelevel { margin: 0; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.delivery { padding: 4px 16px 16px; font-family: system-ui, sans-serif; font-size: 13.5px; }
.delivery h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 16px 0 6px; }
.dtable { border-collapse: collapse; width: 100%; }
.dtable th, .dtable td { text-align: left; padding: 4px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.dtable th { color: var(--muted); font-weight: 600; font-size: 12.5px; }
.dtable tbody tr[data-file] { cursor: pointer; }
.dtable tbody tr[data-file]:hover { background: var(--bg); }
.dtable .n { font-size: 11.5px; border-radius: 999px; padding: 0 7px; }
.dtable .n.e { background: var(--err-bg); color: var(--err); }
.dtable .n.w { background: var(--warn-bg); color: var(--warn); }
.objbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 6px; }
.objbar input[type=search] { font: inherit; padding: 4px 8px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); color: var(--ink); min-width: 260px; }
a.xref { color: inherit; text-decoration: underline dotted; text-underline-offset: 2px; }
a.xref:hover { color: var(--accent); }
footer { color: var(--muted); font-size: 12.5px; margin-top: 18px; max-width: 90ch; }

.rules-toc { margin: 0 0 18px; color: var(--muted); }
.rules-toc a { color: inherit; }
.wrap section { margin-bottom: 22px; }
.wrap section h2 { font-size: 15px; margin: 0 0 8px; }
.lvl { font-weight: 700; }
.lvl.ERROR { color: var(--err); }
.lvl.WARN { color: var(--warn); }