/* 02 — Pourquoi un bon site ?
   Scroll naturel : la colonne de gauche reste en place (CSS sticky, sans scroll-jacking)
   et indique le chapitre en cours ; les chapitres défilent à droite. */
.why { padding-top: var(--section-y); }
.why__grid {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter);
  display: grid; gap: 3rem;
  grid-template-columns: minmax(0, 1fr); /* jamais plus large que l'écran (mobile) */
}
.why__headline {
  margin-top: clamp(1rem, 0.6rem + 1.2vw, 1.75rem);
  font-family: var(--font-display); letter-spacing: var(--display-track); font-weight: var(--display-weight);
  font-size: var(--fs-2xl); line-height: 1.02; text-transform: uppercase;
  max-width: 11ch;
}
.why__steps { display: none; }

.why__chapters { display: grid; grid-template-columns: minmax(0, 1fr); gap: clamp(4rem, 3rem + 5vw, 8rem); }

.chapter { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
.chapter__num { display: flex; gap: 0.9em; align-items: center; font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.chapter__num span { color: var(--neon); font-variant-numeric: tabular-nums; }
.chapter__title {
  margin: 0.7rem 0 0.9rem;
  font-family: var(--font-display); letter-spacing: var(--display-track); font-weight: var(--display-weight);
  font-size: clamp(1.5rem, 1rem + 1.8vw, 2.75rem); line-height: 1; text-transform: uppercase;
  padding-top: 0.06em;
}
.chapter__lede { color: var(--ink-2); font-size: var(--fs-lg); max-width: 38ch; }
.chapter__points { margin-top: 1.25rem; display: grid; gap: 0.5rem; font-size: var(--fs-sm); }
.chapter__points li { display: flex; gap: 0.7em; align-items: baseline; }
.chapter__points li::before { content: ''; flex: none; width: 5px; height: 5px; border-radius: 50%; background: var(--orange); transform: translateY(-2px); }

/* Entrée du texte : une fois, courte */
.js .chapter__text { opacity: 0; transform: translateY(20px); transition: opacity var(--t-enter) var(--ease), transform var(--t-enter) var(--ease); }
.js .chapter.is-seen .chapter__text { opacity: 1; transform: none; }

.chapter__visual {
  position: relative; min-height: clamp(300px, 24vw, 380px);
  border-radius: var(--radius); border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--bg-3), var(--bg) 70%);
  overflow: hidden;
  display: grid; place-items: center; padding: clamp(1rem, 5%, 2.5rem);
}
/* Rubans de matière en bordure (rappel DA 1), statiques */
.chapter__visual::before {
  content: ''; position: absolute; inset: auto -10% -30% -10%; height: 42%;
  background: repeating-radial-gradient(ellipse 60% 100% at 50% 100%, color-mix(in srgb, var(--orange) 14%, transparent) 0 8px, color-mix(in srgb, var(--orange) 5%, transparent) 8px 16px, transparent 16px 24px);
  -webkit-mask-image: linear-gradient(transparent, #000 60%); mask-image: linear-gradient(transparent, #000 60%);
  pointer-events: none;
}
.chapter__visual > * { position: relative; }

@media (min-width: 900px) {
  .why__grid { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(2rem, 5vw, 6rem); }
  .why__sticky { position: sticky; top: calc(var(--header-h) + 3rem); }
  .why__steps { display: grid; gap: 0.1rem; margin-top: 2.5rem; counter-reset: step; }
  .why__steps a {
    position: relative; display: flex; align-items: center; gap: 0.9rem;
    min-height: 40px; font-size: var(--fs-sm); color: var(--muted);
    transition: color var(--t-micro);
  }
  .why__steps a::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-size: var(--fs-xs); font-variant-numeric: tabular-nums; width: 1.6rem; }
  .why__steps a::after { content: ''; height: 1px; flex: 0 0 0; background: var(--lava); transition: flex-basis var(--t-ui) var(--ease); }
  .why__steps a:hover { color: var(--ink-2); }
  .why__steps a[aria-current="true"] { color: var(--ink); }
  .why__steps a[aria-current="true"]::before { color: var(--neon); }
  .why__steps a[aria-current="true"]::after { flex-basis: 2.5rem; }
  .why__chapters { padding-top: 0.5rem; }
  .chapter { grid-template-columns: minmax(0, 1fr); }
}
@media (min-width: 1200px) {
  .chapter { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: start; gap: 3rem; } /* image et texte partent du même haut */
  /* Chaque chapitre : le petit titre commence au niveau du haut de son image */
  .chapter__num { margin-top: calc((1lh - 1cap) / -2); } /* aligne le haut des lettres, pas l'interligne */
  .chapter:nth-child(even) .chapter__visual { order: 2; }
}

.why__next .btn { font-family: var(--font-body); font-variation-settings: normal; font-weight: 600; font-size: var(--fs-sm); text-transform: none; }
.why__next {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
  padding-top: 2rem; border-top: 1px solid var(--line);
  font-family: var(--font-display); letter-spacing: var(--display-track); font-weight: var(--display-weight);
  font-size: var(--fs-xl); text-transform: uppercase; line-height: 1;
}

/* ---------- Visuels : une micro-animation, jouée une seule fois à l'entrée ---------- */
.v-search { width: min(100%, 420px); display: grid; gap: 0.9rem; --row: 54px; }
.v-search__bar { display: flex; align-items: center; gap: 0.7rem; height: 48px; padding: 0 1.1rem; border-radius: var(--r-pill); background: color-mix(in srgb, var(--bg) 70%, transparent); border: 1px solid var(--line-strong); font-size: var(--fs-sm); color: var(--ink-2); }
.v-search__icon { width: 13px; height: 13px; border: 1.5px solid var(--ink-2); border-radius: 50%; position: relative; flex: none; }
.v-search__icon::after { content: ''; position: absolute; width: 5px; height: 1.5px; background: var(--ink-2); right: -4px; bottom: -2px; transform: rotate(45deg); }
.v-search__results { display: grid; gap: 0.6rem; }
.v-search__row { height: var(--row); display: grid; align-content: center; gap: 0.4rem; padding: 0 1rem; border-radius: var(--r-sm); border: 1px solid var(--line); background: var(--bg-3); transition: transform 900ms var(--ease-io) 500ms, border-color var(--t-ui) 900ms, background-color var(--t-ui) 900ms; }
.v-search__row i { height: 6px; border-radius: 3px; background: color-mix(in srgb, var(--blue) 18%, transparent); width: 55%; }
.v-search__row i + i { width: 82%; background: color-mix(in srgb, var(--blue) 9%, transparent); }
.v-search__row b { font-size: var(--fs-sm); font-weight: 600; }
.is-seen .v-search__row:not(.is-you) { transform: translateY(calc(var(--row) + 0.6rem)); }
.is-seen .v-search__row.is-you { transform: translateY(calc(-2 * (var(--row) + 0.6rem))); border-color: color-mix(in srgb, var(--orange) 60%, transparent); background: color-mix(in srgb, var(--orange) 10%, var(--bg)); }

.v-questions { width: min(100%, 420px); display: grid; gap: 0.5rem; }
.v-questions li { display: flex; justify-content: space-between; align-items: center; height: 46px; padding: 0 1rem; border-radius: var(--r-sm); border: 1px solid var(--line); background: var(--bg-3); }
.v-questions span { font-family: var(--font-display); letter-spacing: var(--display-track); font-weight: var(--display-weight); font-size: 0.85rem; text-transform: uppercase; }
.v-questions em { font-style: normal; font-size: var(--fs-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); transition: color var(--t-ui); }
.v-questions em::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); margin-right: 0.6em; vertical-align: middle; transition: background-color var(--t-ui), box-shadow var(--t-ui); }
.is-seen .v-questions em { color: var(--ink); }
.is-seen .v-questions em::before { background: var(--orange); }
.v-questions li:nth-child(2) em, .v-questions li:nth-child(2) em::before { transition-delay: 120ms; }
.v-questions li:nth-child(3) em, .v-questions li:nth-child(3) em::before { transition-delay: 240ms; }
.v-questions li:nth-child(4) em, .v-questions li:nth-child(4) em::before { transition-delay: 360ms; }
.v-questions li:nth-child(5) em, .v-questions li:nth-child(5) em::before { transition-delay: 480ms; }

.v-identity { width: min(100%, 420px); display: grid; grid-template-columns: auto 1fr; align-items: end; gap: 1.2rem 1.5rem; }
.v-identity__type { font-family: var(--font-display); letter-spacing: var(--display-track); font-weight: var(--display-weight); font-size: clamp(2rem, 4.2vw, 3.4rem); line-height: 0.9; letter-spacing: -0.04em; color: var(--muted); transition: color 800ms var(--ease) 300ms, letter-spacing 1.2s var(--ease-io) 300ms; }
.is-seen .v-identity__type { color: var(--ink); letter-spacing: 0.1em; }
.v-identity__swatches { display: flex; gap: 0.4rem; justify-self: end; }
.v-identity__swatches i { width: 28px; height: 28px; border-radius: 50%; background: var(--line-strong); transition: background-color var(--t-ui) var(--ease); }
/* La palette du site : orange, bleu, crème, bleu nuit */
.is-seen .v-identity__swatches i:nth-child(1) { background: var(--orange); transition-delay: 600ms; }
.is-seen .v-identity__swatches i:nth-child(2) { background: var(--blue); transition-delay: 700ms; }
.is-seen .v-identity__swatches i:nth-child(3) { background: var(--cream); box-shadow: inset 0 0 0 1px var(--line-strong); transition-delay: 800ms; }
.is-seen .v-identity__swatches i:nth-child(4) { background: var(--ink); transition-delay: 900ms; }
.v-identity__labels { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.v-identity__labels span { font-size: var(--fs-xs); letter-spacing: 0.08em; text-transform: uppercase; padding: 0.35em 0.85em; border-radius: var(--r-pill); border: 1px solid var(--line-strong); color: var(--ink-2); }

.v-trust { position: relative; width: min(100%, 400px); aspect-ratio: 4 / 3; }
.v-trust__win { position: absolute; border-radius: var(--r-sm); display: grid; gap: 0.45rem; align-content: start; padding: 1rem; border: 1px solid var(--line); transition: transform 900ms var(--ease-io), opacity 900ms, filter 900ms; }
.v-trust__win--old { inset: 0 20% 20% 0; background: #E6E2C4; transform: rotate(-3deg); }
.v-trust__win--old i { height: 8px; background: #C9C3A1; }
.v-trust__win--old i:nth-child(1) { width: 65%; height: 18px; margin-left: 15%; background: #B5A57E; }
.v-trust__win--old i:nth-child(2) { width: 40%; margin-left: 38%; }
.v-trust__win--old i:nth-child(3) { width: 85%; }
.v-trust__win--new { inset: 20% 0 0 20%; background: var(--bg-2); border-color: color-mix(in srgb, var(--orange) 45%, transparent); opacity: 0; transform: translateY(16%); box-shadow: 0 24px 50px -20px var(--shadow); }
.v-trust__win--new span { height: 40%; min-height: 50px; border-radius: 8px; background: var(--lava); }
.v-trust__win--new i { height: 6px; border-radius: 3px; width: 70%; background: color-mix(in srgb, var(--blue) 20%, transparent); }
.v-trust__win--new i + i { width: 45%; }
.v-trust__win--new b { width: 36%; height: 22px; border-radius: var(--r-pill); background: var(--blue); margin-top: 0.2rem; }
.is-seen .v-trust__win--old { opacity: 0.4; filter: grayscale(1); transform: rotate(-5deg) translate(-4%, -3%); transition-delay: 300ms; }
.is-seen .v-trust__win--new { opacity: 1; transform: none; transition-delay: 450ms; }

.v-convert { display: grid; justify-items: center; gap: 1.4rem; width: min(100%, 420px); }
.v-convert ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.45rem; }
.v-convert li { font-size: var(--fs-xs); letter-spacing: 0.08em; text-transform: uppercase; padding: 0.5em 1em; border-radius: var(--r-pill); border: 1px solid var(--line-strong); color: var(--ink-2); }
.v-convert__cta { font-family: var(--font-display); letter-spacing: var(--display-track); font-weight: var(--display-weight); font-size: 1.05rem; text-transform: uppercase; padding: 0.8em 1.6em; border-radius: var(--r-pill); border: 1px solid var(--orange); transition: background-color var(--t-ui), color var(--t-ui), box-shadow var(--t-ui); transition-delay: 500ms; }
.is-seen .v-convert__cta { background: var(--red); color: var(--on-red); border-color: transparent; }

/* Très petits écrans : le bouton peut passer à la ligne plutôt que de déborder */
@media (max-width: 380px) {
  .why__next .btn { white-space: normal; text-align: left; }
}

/* Mobile et tablette (blocs empilés) : le texte d'abord, l'image associée juste en dessous */
@media (max-width: 1199px) {
  .chapter__visual { order: 2; }
}