/* ===== 読み込み時スプラッシュ ===== */
.intro-splash{position:fixed;inset:0;z-index:20000;background:var(--color-base,#fff);display:flex;align-items:center;justify-content:center;
  opacity:1;transition:opacity .8s ease}
.intro-splash.is-leaving{opacity:0;pointer-events:none}
.intro-splash-inner{display:flex;flex-direction:column;align-items:center;gap:6px;opacity:0;transform:translateY(6px);
  transition:opacity .6s ease,transform .6s ease}
.intro-splash.is-shown .intro-splash-inner{opacity:1;transform:none}
.intro-splash-model{width:min(46vh,46vw,420px);height:min(46vh,46vw,420px)}
.intro-splash-model::part(default-progress-bar){display:none}
.intro-splash-name{font-size:clamp(28px,4.6vw,64px);font-weight:700;letter-spacing:.06em;color:var(--color-primary,#c8102e);line-height:1.1;white-space:nowrap}
.intro-splash-sub{font-size:clamp(12px,1.3vw,18px);letter-spacing:.3em;color:var(--color-text-muted,#888);margin-top:2px}
html.has-splash{overflow:hidden}
@media(max-width:600px){.intro-splash-name{white-space:normal;text-align:center;letter-spacing:.04em}}