:root {
  --navy: #0b1f3a; --navy-2: #13305a; --blue: #2f6fd1; --blue-soft: #e6eefb;
  --bg: #f4f6f9; --surface: #ffffff; --ink: #14223a; --muted: #5a6880; --line: #dbe2ec;
  --ok: #1d7a4a; --ok-bg: #e3f4ea; --ko: #b3261e; --ko-bg: #fbe7e5; --warn-bg: #fff4dc; --warn: #7a5300;
  --sec0: rgba(47, 111, 209, .22); --sec1: rgba(0, 150, 160, .22); --sec-stroke: #2f6fd1;
  --radius: 10px; --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a1424; --surface: #111e33; --ink: #e5ecf6; --muted: #93a3bb; --line: #22344f; --blue: #6fa8ff; --blue-soft: #16294a;
    --ok: #6fd39c; --ok-bg: #12301f; --ko: #ff8a80; --ko-bg: #3a1614; --warn-bg: #352a10; --warn: #f1cf7a;
    --sec0: rgba(111, 168, 255, .25); --sec1: rgba(64, 210, 210, .22); --sec-stroke: #6fa8ff; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a1424; --surface: #111e33; --ink: #e5ecf6; --muted: #93a3bb; --line: #22344f; --blue: #6fa8ff; --blue-soft: #16294a;
  --ok: #6fd39c; --ok-bg: #12301f; --ko: #ff8a80; --ko-bg: #3a1614; --warn-bg: #352a10; --warn: #f1cf7a;
  --sec0: rgba(111, 168, 255, .25); --sec1: rgba(64, 210, 210, .22); --sec-stroke: #6fa8ff; color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--blue); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* En-tête */
.top { background: var(--navy); color: #fff; }
.top-in { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; }
.brand strong { display: block; font-size: 1.05rem; letter-spacing: .02em; }
#brand-sub { display: block; font-size: .8rem; color: #a9c2e8; }
.logo { width: 36px; height: 36px; fill: none; stroke: #6fa8ff; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.lang { display: flex; border: 1px solid #3a5a8c; border-radius: 8px; overflow: hidden; }
.lang button { background: transparent; color: #c8d8f0; border: 0; padding: 6px 12px; font: inherit; font-size: .85rem; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--blue); color: #fff; }
:root:not([data-theme="light"]) .lang button[aria-pressed="true"] { color: #fff; }

/* Accueil */
.hero { padding: 40px 0 8px; }
.hero h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); margin: 0 0 6px; letter-spacing: -.01em; }
.tag { font-size: 1.08rem; color: var(--ink); margin: 0 0 6px; }
.intro { color: var(--muted); max-width: 70ch; margin: 0; }
.cat { margin-top: 32px; }
.cat h2 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 12px; display: flex; align-items: baseline; gap: 10px; }
.count { font-size: .8rem; text-transform: none; letter-spacing: 0; font-weight: 400; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.card { display: grid; align-content: start; grid-template-columns: 34px 1fr; column-gap: 12px; row-gap: 2px; align-items: start; padding: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
.card:hover, .card:focus-visible { border-color: var(--blue); transform: translateY(-1px); }
.card .ico { grid-row: span 2; width: 34px; height: 34px; padding: 6px; background: var(--blue-soft); border-radius: 8px; }
.card-t { font-weight: 600; }
.card-d { font-size: .88rem; color: var(--muted); }
.ico { fill: none; stroke: var(--blue); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* Page outil */
.back { display: inline-block; margin: 20px 0 8px; text-decoration: none; font-size: .92rem; }
.tool-h { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 16px; }
.tool-h .ico { width: 48px; height: 48px; flex: none; padding: 9px; background: var(--blue-soft); border-radius: 12px; }
.tool-h h1 { margin: 0 0 4px; font-size: clamp(1.4rem, 3.5vw, 1.9rem); }
.eyebrow { margin: 0; font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.tool-h .tag { font-size: 1rem; color: var(--muted); }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.form-t { margin: 0 0 12px; font-size: 1.05rem; }
.grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; gap: 16px; } }
h3 { margin: 0 0 10px; font-size: .8rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.field { display: block; margin-bottom: 10px; }
.field > span:first-child { display: block; font-size: .88rem; margin-bottom: 4px; }
.inp { display: flex; align-items: stretch; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); overflow: hidden; }
.inp:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }
.inp input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); padding: 9px 10px; font: 1rem var(--mono); }
.inp input:focus { outline: none; }
.inp em { font-style: normal; color: var(--muted); padding: 9px 10px; font-size: .88rem; border-left: 1px solid var(--line); min-width: 52px; text-align: center; }
input[aria-invalid="true"] { color: var(--ko); }
.field:has(input[aria-invalid="true"]) .inp { border-color: var(--ko); }
select { width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); font: inherit; }
.outputs dl { margin: 0; }
.row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--line); }
.row:last-child { border-bottom: 0; }
.row dt { color: var(--muted); font-size: .92rem; }
.row dd { margin: 0; font: 600 1rem var(--mono); text-align: right; white-space: nowrap; }
.row dd small { font: 400 .82rem system-ui, sans-serif; color: var(--muted); }
.row.key { background: var(--blue-soft); margin: 4px -10px; padding: 10px; border-radius: 8px; border: 0; }
.row.key dd { font-size: 1.12rem; color: var(--blue); }
.error, .warn { margin: 0 0 10px; padding: 10px 12px; border-radius: 8px; font-size: .92rem; }
.error { background: var(--ko-bg); color: var(--ko); }
.warn { background: var(--warn-bg); color: var(--warn); }
.extra:empty { display: none; }
.extra { margin-top: 16px; }
.diagram { width: 100%; height: auto; display: block; max-width: 960px; margin: 0 auto; }
.diagram .surf { stroke: var(--blue); stroke-width: 1.5; stroke-dasharray: 6 4; }
.diagram .bed { stroke: var(--muted); stroke-width: 3; }
.diagram .cl { stroke: var(--muted); stroke-dasharray: 2 4; }
.diagram .sec { stroke: var(--sec-stroke); stroke-width: 1.2; }
.diagram .sec0 { fill: var(--sec0); } .diagram .sec1 { fill: var(--sec1); }
.diagram .xd { fill: var(--navy); stroke: var(--blue); stroke-width: 2; }
:root:not([data-theme="light"]) .diagram .xd { fill: var(--surface); }
.diagram .lbl { fill: var(--muted); font: 12px system-ui, sans-serif; }
.diagram .lbl.end { text-anchor: end; }
.tbl-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.tbl-wrap.narrow table { width: auto; min-width: 300px; }
.tbl-wrap.narrow td, .tbl-wrap.narrow th { padding-right: 28px; }
td.num { font-family: var(--mono); text-align: right; }
.pill { padding: 2px 8px; border-radius: 999px; font-size: .8rem; font-weight: 600; }
.pill.ok { background: var(--ok-bg); color: var(--ok); } .pill.ko { background: var(--ko-bg); color: var(--ko); }
.method { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 18px; }
.method summary { cursor: pointer; font-weight: 600; }
.method p { color: var(--muted); margin: 10px 0 2px; }
.actions { display: flex; gap: 10px; margin: 16px 0 8px; flex-wrap: wrap; }
.actions button { font: inherit; font-size: .92rem; padding: 9px 16px; border-radius: 8px; cursor: pointer; border: 1px solid var(--blue); background: var(--blue); color: #fff; }
.actions button.ghost { background: transparent; color: var(--blue); }

/* Pied de page */
.foot { margin-top: 48px; padding: 24px 0 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: .86rem; }
.foot p { margin: 0 0 8px; max-width: 80ch; }
.copy { opacity: .8; }