.btn {
    display: inline-block;
    text-decoration: none; background: var(--shu); color: var(--blanc);
    font-family: var(--body); font-weight: 700; letter-spacing: .01em;
    padding: 16px 32px; border-radius: 3px; font-size: .88rem; line-height: 1;
    border: none; cursor: pointer;
    transition: background .2s, color .2s, border-color .2s;
  }
.hero-page-photo {
    position: absolute; inset: 0; width: 100%; height: 100%;
    object-fit: cover; object-position: center 28%; opacity: .5;
  }
.hero-page::before {
    content: ""; position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(to right, rgba(20,31,44,.92) 0%, rgba(20,31,44,.72) 52%, rgba(20,31,44,.25) 100%);
  }
.hero-page h1 {
    font-family: var(--display); font-weight: 600;
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    line-height: 1.18; letter-spacing: -.02em; color: var(--blanc);
    max-width: 16ch; margin-top: 12px;
    animation: monte .9s cubic-bezier(.22,.61,.36,1) both .4s;
  }
.hero-page .sous {
    margin-top: 20px; max-width: 54ch; font-size: 1.06rem; color: rgba(255,255,255,.9);
    animation: monte .9s cubic-bezier(.22,.61,.36,1) both .6s;
  }
.hero-page .actions {
    margin-top: 34px; display: flex; gap: 18px; flex-wrap: wrap; align-items: center;
    animation: monte .9s cubic-bezier(.22,.61,.36,1) both .8s;
  }
.prose p { color: var(--pierre); margin-bottom: 18px; max-width: 62ch; }
.prose p:last-child { margin-bottom: 0; }
.deux-col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
@media (max-width: 880px) { .deux-col { grid-template-columns: 1fr; gap: 48px; } }
.photo-cadre { position: relative; }
.photo-cadre img { border-radius: 2px; width: 100%; height: auto; }
.photo-cadre::after {
    content: ""; position: absolute;
    inset: calc(-1 * var(--hanko-offset)) var(--hanko-offset) var(--hanko-offset) calc(-1 * var(--hanko-offset));
    border: 1px solid var(--ai); border-radius: 2px; z-index: -1;
  }
.photo-cadre .legende {
    position: absolute; left: 0; bottom: -32px;
    font-size: .72rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--pierre);
  }
.origines { padding: 100px 0 90px; }
.symbole-bloc { text-align: center; }
.symbole-bloc img { width: 220px; height: auto; margin: 0 auto; }
.symbole-bloc .legende-sym {
    margin-top: 26px; font-size: .92rem; color: var(--pierre); max-width: 34ch; margin-left: auto; margin-right: auto; line-height: 1.6;
  }
.symbole-bloc .legende-sym strong { color: var(--sumi); font-family: var(--display); font-weight: 600; }
.principes { background: var(--washi-2); padding: 90px 0; border-top: 1px solid var(--ligne); border-bottom: 1px solid var(--ligne); }
.principes-grille { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; }
@media (max-width: 880px) { .principes-grille { grid-template-columns: 1fr; } }
.principe {
    background: var(--blanc); border: 1px solid var(--ligne); border-radius: 4px;
    padding: 32px 28px;
  }
.principe .num { font-family: var(--display); font-weight: 600; font-size: 1.6rem; color: var(--shu); line-height: 1; margin-bottom: 14px; }
.principe h3 { font-family: var(--display); font-weight: 600; font-size: 1.25rem; color: var(--sumi); margin-bottom: 10px; }
.principe p { font-size: .95rem; color: var(--pierre); }
.nanbu { background: var(--ai); color: var(--blanc); padding: 100px 0; overflow: hidden; }
.nanbu .kanji-fond {
    position: absolute; right: -30px; top: 30px;
    font-family: var(--display); font-size: clamp(8rem, 18vw, 15rem); line-height: 1;
    color: rgba(255,255,255,.03); user-select: none; pointer-events: none;
  }
.nanbu .eyebrow { color: var(--shu-tint); }
.nanbu h2 { color: var(--blanc); }
.nanbu .intro { max-width: 56ch; color: rgba(255,255,255,.82); }
.nanbu .photo-cadre img { border-radius: 4px; }
.nanbu .photo-cadre::after { border-color: rgba(255,255,255,.3); }
.nanbu .photo-cadre .legende { color: rgba(255,255,255,.55); }
.parcours { margin-top: 56px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; }
@media (max-width: 760px) { .parcours { grid-template-columns: 1fr; } }
.jalon {
    padding: 22px 0; border-top: 1px solid rgba(255,255,255,.14);
  }
.jalon strong {
    display: block; font-family: var(--display); font-weight: 600; font-size: 1.18rem; color: var(--blanc); margin-bottom: 6px;
  }
.jalon strong .annee { color: var(--shu-tint); font-size: .82rem; font-family: var(--body); font-weight: 700; letter-spacing: .08em; margin-left: 8px; }
.jalon p { font-size: .93rem; color: rgba(255,255,255,.72); }
.cta-finale h2 { color: var(--blanc); margin: 0 auto 18px; max-width: 20ch; }
.cta-finale p { color: rgba(255,255,255,.82); max-width: 50ch; margin: 0 auto 34px; position: relative; }