:root {
  --bg: #fafaf7; --fg: #1d1d1b; --muted: #5c5c57; --card: #ffffff; --border: #e2e1da;
  --accent: #b3261e; --focus: #1a5fb4;
  --red: #b3261e;   --red-bg: rgba(179, 38, 30, .12);
  --amber: #8a5300; --amber-bg: rgba(230, 150, 0, .18);
  --green: #1e6b34; --green-bg: rgba(30, 140, 60, .13);
  --blue: #1a5fb4;  --blue-bg: rgba(26, 95, 180, .12);
  --banner-bg: #fff6e0; --banner-border: #e6b84d;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413; --fg: #ececea; --muted: #a3a39e; --card: #1d1d1b; --border: #33332f;
    --accent: #f2b8b5; --focus: #8ab4f8;
    --red: #ff8a80;   --red-bg: rgba(255, 110, 100, .18);
    --amber: #ffcc66; --amber-bg: rgba(255, 190, 60, .17);
    --green: #81c995; --green-bg: rgba(110, 200, 140, .15);
    --blue: #8ab4f8;  --blue-bg: rgba(120, 170, 250, .16);
    --banner-bg: #2b2414; --banner-border: #7a6224;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--card); padding: .4rem .8rem; z-index: 10; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.hero { padding: 3.5rem 0 1.5rem; }
.hero h1 { font-size: clamp(2.2rem, 7vw, 3.4rem); margin: 0 0 .3rem; letter-spacing: -.02em; line-height: 1.1; }
.hero h1 span { color: var(--accent); }
.tagline { font-size: clamp(1.1rem, 3vw, 1.35rem); font-weight: 600; margin: 0 0 .6rem; }
.lede { color: var(--muted); max-width: 46rem; margin: 0; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem 1.2rem; margin-bottom: 1.2rem; }
.card h2, .card h3 { margin: 0 0 .7rem; font-size: 1.1rem; }
.card h3 + * { margin-top: 0; }

.samples { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .9rem; }
button, select, input, textarea { font: inherit; color: inherit; }
.samples button, .empty button {
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
  padding: .25rem .8rem; cursor: pointer;
}
.samples button:hover { border-color: var(--fg); }
.field-label { display: block; font-weight: 600; margin: .4rem 0 .3rem; }
textarea, input[type=url], select {
  width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: .6rem .7rem;
}
textarea { resize: vertical; min-height: 9rem; }
input:disabled { opacity: .6; cursor: not-allowed; }
.pill { font-size: .72rem; font-weight: 600; border: 1px solid var(--border); border-radius: 999px; padding: .05rem .5rem; color: var(--muted); vertical-align: middle; }
.controls { display: flex; flex-wrap: wrap; gap: .8rem 1.2rem; align-items: center; margin-top: .6rem; }
.inline { display: flex; align-items: center; gap: .5rem; }
.inline select { width: auto; }
.check input { width: 1.1rem; height: 1.1rem; }
#go {
  margin-left: auto; background: var(--fg); color: var(--bg); border: 0; border-radius: 8px;
  padding: .6rem 1.4rem; font-weight: 600; cursor: pointer;
}
#go:disabled { opacity: .6; cursor: progress; }
.status { min-height: 1.4em; margin: .6rem 0 0; }
.status.error { color: var(--red); font-weight: 600; }

.banner { background: var(--banner-bg); border: 1px solid var(--banner-border); border-radius: 10px; padding: .7rem 1rem; margin-bottom: 1.2rem; }
.grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0 1.2rem; }
@media (min-width: 900px) { .grid { grid-template-columns: minmax(0, 1fr) 21rem; } }

.doc-text { white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.85; margin-bottom: 1.4rem; }

/* highlights: colour + underline style + icon (never colour alone) */
.hl {
  color: inherit; border-radius: 3px; padding: 0 1px; cursor: pointer;
  text-decoration-line: underline; text-decoration-thickness: 2px; text-underline-offset: 4px;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.c-red.hl   { background: var(--red-bg);   text-decoration-color: var(--red);   text-decoration-style: solid; }
.c-amber.hl { background: var(--amber-bg); text-decoration-color: var(--amber); text-decoration-style: dashed; }
.c-green.hl { background: var(--green-bg); text-decoration-color: var(--green); text-decoration-style: double; }
.c-blue.hl  { background: var(--blue-bg);  text-decoration-color: var(--blue);  text-decoration-style: dotted; }
.hl:hover, .hl.active { filter: saturate(1.6); outline: 1px solid currentColor; }
.ico {
  display: inline-block; font-size: .68em; font-weight: 800; line-height: 1; vertical-align: super;
  margin: 0 1px; padding: 1px 3px; border-radius: 4px;
}
.c-red.ico   { color: var(--red);   background: var(--red-bg); }
.c-amber.ico { color: var(--amber); background: var(--amber-bg); }
.c-green.ico { color: var(--green); background: var(--green-bg); }
.c-blue.ico  { color: var(--blue);  background: var(--blue-bg); }

.tip {
  position: absolute; z-index: 20; max-width: min(24rem, calc(100vw - 32px));
  background: var(--card); color: var(--fg); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .18); padding: .75rem .9rem; font-size: .92rem;
}
.tip h4 { margin: 0 0 .3rem; font-size: 1rem; display: flex; gap: .4rem; align-items: center; }
.tip p { margin: .3rem 0; }
.tip .item + .item { border-top: 1px solid var(--border); margin-top: .6rem; padding-top: .6rem; }
.badges { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .3rem; }
.badge { font-size: .75rem; font-weight: 600; border-radius: 999px; padding: .05rem .5rem; border: 1px solid var(--border); }
.badge.rs { border-color: var(--blue); color: var(--blue); }
.badge.exp { border-color: var(--amber); color: var(--amber); }

.findings { padding-left: 1.4rem; margin: 0; }
.findings li { margin-bottom: .6rem; }
.findings button { background: none; border: 0; padding: 0; text-align: left; cursor: pointer; color: inherit; }
.findings .q { font-style: italic; }
.findings .meta { display: block; color: var(--muted); font-size: .85rem; }
.empty { color: var(--muted); }
.empty button { margin-top: .4rem; }

.summary { margin-top: 0; }
.profile { display: grid; grid-template-columns: auto 1fr; gap: .25rem .8rem; margin: 0 0 .5rem; font-size: .93rem; }
.profile dt { color: var(--muted); }
.profile dd { margin: 0; }
.notes { padding-left: 1.1rem; margin: .4rem 0 0; font-size: .88rem; color: var(--muted); }
.legend { list-style: none; padding: 0; margin: 0 0 .6rem; }
.legend li { margin-bottom: .55rem; font-size: .93rem; }
.legend .sw { font-weight: 600; }
.legend .d { display: block; color: var(--muted); font-size: .85rem; }

footer { padding: 1rem 16px 2.5rem; }
.findings button { display: block; width: 100%; }
.legend .hl { cursor: default; }
.legend .hl:hover { filter: none; outline: 0; }

/* shared nav + content pages */
.topnav { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.2rem; padding-top: .9rem; padding-bottom: .4rem; }
.topnav .brand { font-weight: 800; font-size: 1.15rem; color: var(--fg); text-decoration: none; margin-right: auto; }
.topnav .brand span { color: var(--accent); }
.topnav .links { display: flex; flex-wrap: wrap; gap: .2rem .9rem; }
.topnav .links a { color: var(--muted); text-decoration: none; padding: .2rem 0; }
.topnav .links a:hover { color: var(--fg); }
.topnav .links a[aria-current="page"] { color: var(--fg); font-weight: 600; border-bottom: 2px solid var(--accent); }
a { color: var(--focus); }
.tools { list-style: none; padding: 0; margin: 1.2rem 0 0; display: grid; gap: .7rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.tools a { display: block; height: 100%; text-decoration: none; color: var(--fg); background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: .8rem 1rem; }
.tools a:hover { border-color: var(--fg); }
.tools span { display: block; color: var(--muted); font-size: .9rem; }
.page { padding-top: 1.5rem; padding-bottom: 2rem; max-width: 50rem; }
.page h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); margin: .3rem 0 .6rem; }
.page h2 { font-size: 1.2rem; margin: 1.6rem 0 .5rem; }
.page .lede { margin-bottom: 1rem; }
.page pre { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: .8rem; overflow-x: auto; font-size: .85rem; }
.principles li { margin-bottom: .5rem; }
.hero { padding-top: 1.5rem; }
.private { margin-top: .5rem; }
.private + .muted { margin: .2rem 0 .4rem; }
.innocent { padding-left: 1.1rem; margin: .3rem 0 0; font-size: .92rem; }
.innocent li { margin-bottom: .4rem; }

/* receipts */
.receipts { list-style: none; padding: 0; margin: .4rem 0 .8rem; }
.receipt { display: flex; gap: .65rem; padding: .55rem 0; border-top: 1px solid var(--border); }
.receipt:first-child { border-top: 0; }
.r-ico {
  flex: 0 0 1.6rem; height: 1.6rem; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .85rem; border: 2px solid var(--border); color: var(--muted);
}
.r-ok .r-ico { border-color: var(--green); color: var(--green); background: var(--green-bg); }
.r-warning .r-ico { border-color: var(--amber); color: var(--amber); background: var(--amber-bg); }
.r-neutral .r-ico { border-color: var(--blue); color: var(--blue); background: var(--blue-bg); }
.r-error .r-ico { border-color: var(--red); color: var(--red); border-style: dashed; }
.r-not_checked .r-ico { border-style: dashed; }
.r-body { min-width: 0; font-size: .92rem; }
.r-head { display: flex; flex-wrap: wrap; gap: .1rem .5rem; align-items: baseline; }
.r-kind { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.r-text { margin: .15rem 0; overflow-wrap: anywhere; }
.r-meta, .r-note { margin: 0; font-size: .8rem; color: var(--muted); }
.r-note { font-style: italic; }
button.secondary {
  background: transparent; border: 1px solid var(--border); border-radius: 8px; padding: .4rem .9rem; cursor: pointer;
}
button.secondary:hover { border-color: var(--fg); }
.source-form { display: flex; flex-wrap: wrap; gap: .6rem; }
.source-form input { flex: 1 1 16rem; }
.source-form button { background: var(--fg); color: var(--bg); border: 0; border-radius: 8px; padding: .6rem 1.2rem; font-weight: 600; cursor: pointer; }
button.linkish { background: none; border: 0; padding: 0; color: var(--focus); text-decoration: underline; cursor: pointer; font-size: inherit; }
.page .card h2 { font-size: 1.1rem; margin-top: 0; }