/* Facture de cours — feuille de style
   Univers : le carnet de reçus en duplicata (original blanc, copie jaune, encre bleue, numéros rouges)
   et le cahier ligné (lignes bleues, marge rouge).
   Polices auto-hébergées, licence SIL OFL : Archivo, IBM Plex Mono, Reenie Beanie. */

@font-face { font-family: "Archivo"; src: url("/fonts/archivo-latin-wdth-normal.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500 700; font-display: swap; }
@font-face { font-family: "Reenie Beanie"; src: url("/fonts/reenie-beanie-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }

:root {
  --sheet: #ffffff;
  --ground: #ffffff;
  --copy: #fbf2bf;
  --copy-deep: #f3e59b;
  --ink: #1d2a78;
  --ink-strong: #121a52;
  --pen: #2437b0;
  --muted: #5d648f;
  --rule: #c3d3ee;
  --line: #dde2f0;
  --red: #d1302b;
  --carbon: #191c3d;
  --on-carbon: #e9ebf7;
  --red-on-carbon: #ff7a6e;
  --ok: #26704a;
  --warn: #9a6512;
  --danger: #b42318;

  --display: "Archivo", "Arial Narrow", Arial, sans-serif;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --hand: "Reenie Beanie", "Bradley Hand", cursive;
  --radius: 2px;
  --line-h: 32px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font: 400 15.5px/1.6 var(--sans); font-stretch: 100%;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-color: var(--rule); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-color: var(--red); }
h1, h2, h3 { font-family: var(--display); font-stretch: 118%; font-weight: 750; color: var(--ink-strong); letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
h1 { font-size: 2rem; line-height: 1.08; }
h2 { font-size: 1.2rem; line-height: 1.25; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 .8em; }
.tnum, .num, td, .figure, .price { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); }
.hand { font-family: var(--hand); color: var(--pen); }
::selection { background: var(--copy-deep); }
:focus-visible { outline: 2px solid var(--pen); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ---------- Boutons et formulaires ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em; white-space: nowrap;
  background: var(--ink); color: #fff; border: 1px solid var(--ink); border-radius: var(--radius);
  padding: .62em 1.1em; font: 650 .92rem/1.2 var(--sans); font-stretch: 108%; letter-spacing: .01em;
  cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--ink-strong); border-color: var(--ink-strong); }
.btn-outline { background: var(--sheet); color: var(--ink); border-color: var(--ink); }
.btn-outline:hover { background: var(--copy); color: var(--ink-strong); border-color: var(--ink-strong); }
.btn-small { padding: .42em .8em; font-size: .85rem; }
.btn-large { padding: .85em 1.4em; font-size: 1rem; }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: #8f1b12; border-color: #8f1b12; }
.link { background: none; border: 0; padding: 0; font: inherit; color: var(--ink); cursor: pointer; text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; }
.link:hover { text-decoration-color: var(--red); }
.link.subtle { color: var(--muted); font-size: .85rem; }
.link.x { text-decoration: none; font-size: 1.1rem; line-height: 1; color: var(--muted); }
.link.x:hover { color: var(--danger); }
.danger { color: var(--danger) !important; }

label { display: block; font-size: .8rem; font-weight: 600; color: var(--ink); margin-bottom: 1rem; letter-spacing: .01em; }
input, select, textarea {
  display: block; width: 100%; margin-top: .35rem;
  padding: .58rem .7rem; font: 400 .95rem/1.4 var(--sans); color: var(--ink-strong);
  background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--radius);
  transition: border-color .15s, box-shadow .15s;
}
input:hover, select:hover, textarea:hover { border-color: #9fb5dd; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--pen); box-shadow: 0 0 0 3px rgba(36, 55, 176, .12); }
input::placeholder, textarea::placeholder { color: #9aa1c2; }
label.check { display: flex; gap: .6rem; align-items: center; font-size: .92rem; font-weight: 500; }
label.check input { width: 1rem; height: 1rem; margin: 0; accent-color: var(--ink); }
.hint { display: block; font-weight: 400; color: var(--muted); font-size: .78rem; margin-top: .15rem; }
details summary { cursor: pointer; list-style: none; }
details summary::-webkit-details-marker { display: none; }

/* ---------- Éléments communs ---------- */
.muted { color: var(--muted); }
.small { font-size: .82rem; font-weight: 400; }
.pre { white-space: pre-line; }
.right { text-align: right; }
.mt { margin-top: 1.25rem; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.row input { width: auto; flex: 1; margin: 0; }
.inline { display: inline; }
.error { color: var(--danger); font-weight: 600; }
.flash { background: var(--copy); border-left: 3px solid var(--red); padding: .8rem 1rem; margin-bottom: 1.5rem; font-size: .93rem; }
.tag { display: inline-block; font: 500 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: .35em .55em; border: 1px solid currentColor; border-radius: var(--radius); }
.status { display: inline-flex; align-items: center; gap: .45em; font-size: .85rem; white-space: nowrap; }
.status::before { content: ""; width: .5em; height: .5em; border-radius: 50%; background: currentColor; }
.status-ok { color: var(--ok); }
.status-late { color: var(--danger); }
.status-wait { color: var(--muted); }
.kind { font-size: .75rem; color: var(--muted); letter-spacing: .02em; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.sheet, .card { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1.25rem; }
.card h2 { margin-bottom: .9rem; }
.fineprint { color: var(--muted); font-size: .8rem; max-width: 70ch; }
.notice { background: var(--copy); border-left: 3px solid var(--ink); padding: .8rem 1rem; margin-bottom: 1.5rem; font-size: .92rem; }

/* Papier ligné : lignes bleues et marge rouge du cahier d'école */
.ruled {
  height: 64px; position: relative;
  background: repeating-linear-gradient(to bottom, transparent 0 15px, var(--rule) 15px 16px);
}
.ruled::before { content: ""; position: absolute; top: 0; bottom: 0; left: 28px; width: 1px; background: var(--red); opacity: .6; }

.table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.table th {
  text-align: left; font: 500 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  padding: .8rem .75rem; border-bottom: 1.5px solid var(--ink);
}
.table td { padding: .75rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.table td.num, .table th.num { text-align: right; }
.table td.num { font-family: var(--mono); font-size: .9rem; }
.table tbody tr:hover td { background: #f7f9fe; }
.table tfoot td { border: 0; padding-top: .45rem; padding-bottom: .45rem; }
.table tfoot tr:first-child td { padding-top: 1rem; }
.table tr.total td { font: 700 1.15rem/1.3 var(--display); font-stretch: 112%; border-top: 1.5px solid var(--ink); padding-top: .8rem; color: var(--ink-strong); }
.table tr.total td.num { font-family: var(--mono); font-weight: 500; }
.table a { text-decoration: none; font-weight: 600; }
.table a:hover { color: var(--red); }
.table a.tnum { font-family: var(--mono); font-weight: 500; }
.items td { padding: .4rem .3rem; }
.items input, .items select { margin: 0; }

/* ---------- Logo ---------- */
.wordmark {
  display: inline-flex; align-items: baseline; gap: .35em; white-space: nowrap;
  font: 800 1.2rem/1 var(--display); font-stretch: 122%; letter-spacing: -0.02em; color: var(--ink-strong); text-decoration: none;
}
.wordmark::before { content: "Nº"; font: 500 .72em/1 var(--mono); color: var(--red); letter-spacing: 0; }
.wordmark.small { font-size: 1rem; }

/* ---------- Application ---------- */
.app { display: grid; grid-template-columns: 236px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: 2rem;
  padding: 1.6rem 1.1rem 1.4rem; background: var(--copy); border-right: 1px solid var(--copy-deep);
}
.side-nav { display: flex; flex-direction: column; gap: .15rem; }
.side-nav a { position: relative; padding: .5rem .75rem; text-decoration: none; color: var(--ink); font-weight: 500; border-radius: var(--radius); }
.side-nav a:hover { background: rgba(255, 255, 255, .55); }
.side-nav a.active { background: var(--sheet); color: var(--ink-strong); font-weight: 650; box-shadow: 0 1px 0 var(--copy-deep); }
.side-nav a.active::before { content: ""; position: absolute; left: -1.1rem; top: .4rem; bottom: .4rem; width: 3px; background: var(--red); }
.side-foot { margin-top: auto; font-size: .85rem; border-top: 1px solid var(--copy-deep); padding-top: 1rem; }
.side-foot p { margin: 0 0 .4rem; }
.plan-line { color: var(--ink); }
.side-upgrade { display: inline-block; font-weight: 650; color: var(--red); text-decoration: none; margin-bottom: .9rem; }
.side-upgrade:hover { text-decoration: underline; }
.side-user { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.app-main { padding: 2.5rem 3rem 4rem; max-width: 1180px; width: 100%; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; margin-bottom: 2rem; padding-bottom: 1.25rem; border-bottom: 1.5px solid var(--ink); }
.page-head p { margin: .45rem 0 0; color: var(--muted); max-width: 70ch; }

.layout-aside { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 2rem; align-items: start; }
.layout-aside > aside { position: sticky; top: 2rem; }

.figures { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--rule); margin-bottom: 2rem; }
.figures div { padding: .4rem 1.25rem 1.1rem 0; }
.figures div + div { padding-left: 1.25rem; border-left: 1px solid var(--rule); }
.figures span { display: block; font: 500 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: .6rem; }
.figures strong { font: 800 1.75rem/1.1 var(--display); font-stretch: 118%; color: var(--ink-strong); letter-spacing: -0.03em; }
.figures .late strong { color: var(--danger); }

.group { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 1rem; }
.group-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 1.25rem; border-bottom: 1px solid var(--rule); }
.group-head h2 { font-size: 1.1rem; }
.group-head p { margin: .15rem 0 0; font-size: .85rem; color: var(--muted); }
.group .table td { padding: .55rem 1.25rem; white-space: nowrap; }
.group .table tr:last-child td { border-bottom: 0; }

.empty { padding: 3rem 1.5rem; text-align: center; color: var(--ink); }
.empty .ruled { max-width: 240px; margin: 0 auto 1.5rem; }
.empty h2 { margin-bottom: .5rem; }

.list-item { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--rule); }
.list-item:first-child { padding-top: 0; }
.list-item strong { font: 700 1.02rem/1.3 var(--display); font-stretch: 110%; color: var(--ink-strong); }
.list-item .meta { color: var(--muted); font-size: .88rem; margin-top: .2rem; }

/* Pages d'authentification */
.auth { display: grid; grid-template-columns: 1fr 1fr; min-height: calc(100vh - 74px); }
.auth-side { background: var(--carbon); color: var(--on-carbon); padding: 4rem; display: flex; flex-direction: column; justify-content: flex-end; gap: 1.25rem; position: relative; overflow: hidden; }
.auth-side .ruled { position: absolute; left: 0; right: 0; top: 18%; height: 160px; background: repeating-linear-gradient(to bottom, transparent 0 31px, rgba(195, 211, 238, .18) 31px 32px); }
.auth-side .ruled::before { left: 64px; opacity: .5; }
.auth-side blockquote { margin: 0; font: 400 2.3rem/1.1 var(--hand); color: #cfd6ff; max-width: 20ch; }
.auth-side cite { font-style: normal; font-size: .85rem; color: #9ea4c8; }
.auth-form { display: flex; align-items: center; justify-content: center; padding: 3rem 1.5rem; }
.auth-form form { width: 100%; max-width: 360px; }
.auth-form h1 { margin-bottom: .5rem; }
.auth-form .btn { width: 100%; justify-content: center; margin-top: .5rem; }

/* ---------- Site public ---------- */
.site-nav { border-bottom: 1px solid var(--rule); background: var(--sheet); }
.site-nav .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 1.2rem; padding-bottom: 1.2rem; }
.site-nav nav { display: flex; gap: 1.75rem; align-items: center; font-size: .93rem; }
.site-nav nav a:not(.btn) { text-decoration: none; color: var(--ink); }
.site-nav nav a:not(.btn):hover { color: var(--red); }
.site-main > .flash { margin: 1rem clamp(1rem, 4vw, 3.5rem); }
.wrap { max-width: 1160px; margin: 0 auto; padding-inline: clamp(1rem, 4vw, 3.5rem); }

.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; padding-block: 4.5rem 4.5rem; }
.kicker { font: 500 .76rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--red); margin-bottom: 1.4rem; }
.hero h1 { font-size: clamp(2.6rem, 5.6vw, 4.5rem); line-height: .98; font-weight: 800; font-stretch: 125%; letter-spacing: -0.035em; margin-bottom: 1.5rem; }
.hero .lead { font-size: 1.14rem; color: var(--ink); max-width: 40ch; margin-bottom: 2rem; }
.hero .actions { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
.hero .note { margin-top: 1rem; font-size: .85rem; color: var(--muted); }

/* Le reçu en duplicata : talon perforé, original blanc, copie jaune décalée dessous */
.book { position: relative; padding: 0 22px 26px 0; margin-bottom: 7.5rem; max-width: 500px; justify-self: end; width: 100%; }
.book .copy-sheet { position: absolute; inset: 18px 0 0 22px; background: var(--copy); border: 1px solid var(--copy-deep); transform: rotate(1.4deg); }
.receipt {
  position: relative; display: grid; grid-template-columns: 76px 1fr;
  background: var(--sheet); border: 1px solid var(--line);
  box-shadow: 0 1px 0 var(--line), 0 22px 40px -24px rgba(25, 28, 61, .45);
}
.stub { padding: 1rem .7rem; border-right: 2px dotted var(--rule); font: 500 .66rem/1.35 var(--mono); color: var(--muted); display: flex; flex-direction: column; gap: .8rem; }
.stub .hand { font-size: 1.05rem; line-height: 1; }
.stub .no { color: var(--red); }
.slip { padding: 1.1rem 1.4rem 1.2rem; }
.slip-head { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1.5px solid var(--ink); padding-bottom: .5rem; margin-bottom: .4rem; }
.slip-head strong { font: 800 1.4rem/1 var(--display); font-stretch: 125%; letter-spacing: .04em; color: var(--ink-strong); }
.slip-head .no { font: 500 1rem/1 var(--mono); color: var(--red); }
.slip-org { font-size: .74rem; color: var(--muted); margin-bottom: .5rem; }
.field { display: grid; grid-template-columns: 5.6rem 1fr; align-items: end; border-bottom: 1px solid var(--rule); min-height: 2.15rem; }
.field span { font: 500 .66rem/1.2 var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding-bottom: .4rem; }
.field b { font: 400 1.55rem/1 var(--hand); color: var(--pen); padding-bottom: .1rem; }
.slip-foot { display: flex; justify-content: space-between; align-items: end; margin-top: .9rem; }
.slip-foot .amount { font: 500 1.25rem/1 var(--mono); color: var(--ink-strong); border: 1.5px solid var(--ink); padding: .35rem .6rem; }
.slip-foot .sign { font: 400 1.8rem/1 var(--hand); color: var(--pen); }
.digital {
  position: absolute; left: -2rem; bottom: -7.4rem; width: 270px;
  background: var(--carbon); color: var(--on-carbon); padding: 1rem 1.1rem; border-radius: var(--radius);
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, .55);
}
.digital small { display: block; font: 500 .66rem/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: #a7add3; margin-bottom: .45rem; }
.digital strong { display: block; font: 700 1.02rem/1.25 var(--display); font-stretch: 112%; color: #fff; }
.digital .row-out { display: flex; justify-content: space-between; align-items: center; margin-top: .75rem; font: 500 .8rem/1 var(--mono); color: #cfd3ee; }
.digital .go { background: var(--red); color: #fff; padding: .4rem .65rem; border-radius: var(--radius); font: 650 .78rem/1 var(--sans); }

.band { border-top: 1px solid var(--rule); padding-block: 4.5rem; }
.band-copy { background: var(--copy); border-top-color: var(--copy-deep); }
.band-carbon { background: var(--carbon); color: var(--on-carbon); border-top: 0; }
.band-carbon h2 { color: #fff; }
.section-label { font: 500 .72rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 1.1rem; }
.band-carbon .section-label { color: #a7add3; }
.section-title { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; font-stretch: 122%; line-height: 1.05; letter-spacing: -0.03em; max-width: 22ch; }

/* Choix du métier : onglets d'un classeur */
.trades { display: flex; gap: .4rem; flex-wrap: wrap; border-bottom: 1.5px solid var(--ink); }
.trades a {
  flex: 1 1 150px; display: block; padding: 1rem 1.1rem .9rem; text-decoration: none;
  background: var(--sheet); border: 1px solid var(--rule); border-bottom: 0; border-radius: 6px 6px 0 0;
  transition: background .15s, transform .15s;
}
.trades a:nth-child(odd) { background: var(--copy); border-color: var(--copy-deep); }
.trades a:hover { transform: translateY(-3px); }
.trade-name { display: block; font: 800 1.35rem/1.1 var(--display); font-stretch: 122%; letter-spacing: -0.02em; color: var(--ink-strong); }
.trade-who { display: block; margin-top: .3rem; font-size: .84rem; color: var(--muted); }

/* Étapes : trois talons numérotés */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 2.5rem; }
.step { background: var(--sheet); border: 1px solid var(--copy-deep); padding: 1.3rem 1.4rem 1.4rem; position: relative; }
.step::after { content: ""; position: absolute; left: 0; right: 0; top: 3.1rem; border-top: 2px dotted var(--rule); }
.step .n { display: block; font: 500 .95rem/1 var(--mono); color: var(--red); margin-bottom: 2.1rem; }
.step h3 { font-size: 1.15rem; font-stretch: 118%; margin-bottom: .5rem; }
.step p { color: var(--ink); margin: 0; }

.big-figure { display: grid; grid-template-columns: auto 1fr; gap: 3.5rem; align-items: center; }
.big-figure .figure { font: 800 clamp(4.5rem, 12vw, 9rem)/.9 var(--display); font-stretch: 125%; letter-spacing: -0.05em; color: #fff; }
.big-figure .figure sup { font-size: .4em; vertical-align: top; margin-left: .08em; color: var(--red-on-carbon); }
.big-figure p { font-size: 1.15rem; max-width: 46ch; color: #d3d7ef; }
.big-figure p strong { color: #fff; font-weight: 650; }

/* Règles d'ici, écrites sur une page de cahier */
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; }
.notebook {
  margin: 0; padding: 4px 0 4px 3.25rem; position: relative;
  background: repeating-linear-gradient(to bottom, transparent 0 calc(var(--line-h) - 1px), var(--rule) calc(var(--line-h) - 1px) var(--line-h));
  line-height: var(--line-h);
}
.notebook::before { content: ""; position: absolute; top: 0; bottom: 0; left: 2.2rem; width: 1px; background: var(--red); opacity: .7; }
.notebook div { display: grid; grid-template-columns: 10rem 1fr; gap: 1.25rem; margin-bottom: var(--line-h); }
.notebook dt { font-weight: 700; font-stretch: 110%; color: var(--ink-strong); }
.notebook dd { margin: 0; color: var(--ink); }

.pricing { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; }
.plan { background: var(--sheet); border: 1px solid var(--line); padding: 1.8rem 2rem 2rem; position: relative; }
.plan.pro { border: 1.5px solid var(--ink); }
.plan h3 { font: 500 .74rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.plan .price { font: 800 2.8rem/1 var(--display); font-stretch: 122%; letter-spacing: -0.04em; color: var(--ink-strong); margin-bottom: .4rem; }
.plan .price small { font: 400 .95rem/1 var(--sans); color: var(--muted); letter-spacing: 0; }
.plan ul { list-style: none; padding: 0; margin: 1.4rem 0 1.8rem; }
.plan li { padding: .5rem 0 .5rem 1.6rem; border-bottom: 1px solid var(--rule); position: relative; }
.plan li::before { content: "✓"; position: absolute; left: .1rem; color: var(--pen); font-family: var(--hand); font-size: 1.35rem; line-height: 1.1; }

.faq details { border-top: 1px solid var(--rule); padding: 1.05rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--rule); }
.faq summary { font-weight: 650; font-stretch: 108%; font-size: 1.05rem; color: var(--ink-strong); display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--red); font-size: 1.2rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: .8rem 0 0; max-width: 65ch; }

.closing { display: flex; justify-content: space-between; align-items: end; gap: 2rem; flex-wrap: wrap; }

.site-foot { border-top: 1px solid var(--rule); padding-block: 1.75rem; font-size: .85rem; color: var(--muted); }
.site-foot-inner { display: flex; gap: 1.5rem; align-items: baseline; flex-wrap: wrap; }
.site-foot nav { margin-left: auto; display: flex; gap: 1.25rem; flex-wrap: wrap; }
.site-foot a { text-decoration: none; }
.site-foot a:hover { color: var(--red); }

.prose { max-width: 70ch; }
.prose h2 { margin: 2rem 0 .6rem; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: .4rem; }

.upgrade { max-width: 520px; }
.upgrade .price { font: 800 2.8rem/1 var(--display); font-stretch: 122%; letter-spacing: -0.04em; margin: 1.3rem 0 .3rem; color: var(--ink-strong); }
.upgrade .price small { font: 400 1rem var(--sans); color: var(--muted); letter-spacing: 0; }
.upgrade ul { list-style: none; padding: 0; margin: 1.5rem 0 2rem; }
.upgrade li { padding: .5rem 0 .5rem 1.6rem; border-bottom: 1px solid var(--rule); position: relative; }
.upgrade li::before { content: "✓"; position: absolute; left: .1rem; color: var(--pen); font-family: var(--hand); font-size: 1.35rem; line-height: 1.1; }
.date-inline { width: auto; margin: 0; }
.receipt-line { display: flex; gap: .6rem; align-items: baseline; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-block: 3rem 5rem; }
  .book { justify-self: start; }
  .layout-aside { grid-template-columns: minmax(0, 1fr); }
  .layout-aside > aside { position: static; }
  .split { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 820px) {
  .app { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; gap: .75rem 1.25rem; padding: 1rem; border-right: 0; border-bottom: 1px solid var(--copy-deep); }
  .side-nav { flex-direction: row; flex-wrap: wrap; }
  .side-nav a.active::before { display: none; }
  .side-foot { display: none; }
  .app-main { padding: 1.5rem 1rem 3rem; }
  .grid-2, .grid-4, .figures, .steps, .pricing, .auth { grid-template-columns: 1fr; }
  .figures div + div { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: .9rem; }
  .table { display: block; overflow-x: auto; white-space: nowrap; }
  .group .table { display: table; }
  .group .table td { padding: .55rem .6rem; }
  .group .table td:first-child { padding-left: 1rem; }
  .hide-sm { display: none; }
  .group-head { padding: .9rem 1rem; flex-wrap: wrap; }
  .page-head h1 { font-size: 1.6rem; }
  .big-figure { grid-template-columns: 1fr; gap: 1.5rem; }
  .notebook { padding-left: 2.6rem; }
  .notebook::before { left: 1.7rem; }
  .notebook div { grid-template-columns: 1fr; gap: 0; }
  .auth-side { display: none; }
  .site-nav nav a:not(.btn):not([href="/login"]) { display: none; }
  .site-nav nav { gap: .9rem; font-size: .88rem; }
  .site-nav .wordmark { font-size: 1.05rem; }
  .receipt { grid-template-columns: 54px 1fr; }
  .stub { padding: .8rem .45rem; font-size: .58rem; }
  .slip { padding: 1rem; }
  .field { grid-template-columns: 4.6rem 1fr; }
  .field b { font-size: 1.35rem; }
  .digital { left: .5rem; bottom: -7.6rem; width: 240px; }
}

/* Page de contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; padding-block: 3.5rem 4rem; }
.contact-intro h1 { font-size: clamp(2rem, 4vw, 2.8rem); font-stretch: 122%; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 1rem; }
.contact-intro > p { max-width: 46ch; }
.contact-facts { margin: 1.75rem 0; border-top: 1px solid var(--rule); }
.contact-facts div { display: grid; grid-template-columns: 7rem 1fr; padding: .7rem 0; border-bottom: 1px solid var(--rule); }
.contact-facts dt { font: 500 .72rem/1.9 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.contact-facts dd { margin: 0; font-weight: 600; color: var(--ink-strong); }
.contact-form { padding: 1.75rem; }
.contact-form textarea { resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.contact-done { text-align: center; padding: 1.5rem 0; }
.contact-done .stamp { display: inline-block; font: 400 2.4rem/1 var(--hand); color: var(--pen); border: 2px solid var(--pen); padding: .2rem 1rem .1rem; transform: rotate(-4deg); margin-bottom: 1rem; }
.side-help { color: var(--ink); font-weight: 600; text-decoration: none; }
.side-help:hover { color: var(--red); }
.app-main .contact { padding-block: 0; }
@media (max-width: 820px) { .contact { grid-template-columns: 1fr; gap: 2rem; padding-block: 2rem 3rem; } }