.intro-trigger{display:inline-flex;align-items:center;gap:.5rem;font:inherit;font-size:.8rem;color:var(--stone-600);background:var(--cream-50);border:1px solid var(--border-default);border-radius:999px;padding:.4rem .9rem;cursor:pointer;box-shadow:var(--shadow-card);transition:border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease}.intro-trigger:hover{border-color:var(--terracotta-500);color:var(--ink-900);transform:translateY(-1px);box-shadow:var(--shadow-float)}.intro-trigger:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}.intro-trigger-spark{color:var(--terracotta-500);display:inline-flex}.intro-trigger.is-pulse{position:relative}.intro-trigger.is-pulse:after{content:"";position:absolute;top:-1px;right:-1px;bottom:-1px;left:-1px;border-radius:999px;border:1px solid var(--terracotta-500);opacity:0;animation:intro-trigger-pulse 2.6s ease-out 3;pointer-events:none}@keyframes intro-trigger-pulse{0%{transform:scale(1);opacity:.5}70%{transform:scale(1.18);opacity:0}to{opacity:0}}.intro-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:2000;display:grid;place-items:center;padding:1.25rem;background:#2c2a2680;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:intro-overlay-in .22s ease both}@keyframes intro-overlay-in{0%{opacity:0}to{opacity:1}}.intro-dialog{position:relative;width:min(880px,100%);max-height:92vh;overflow:auto;background:var(--cream-50);border:1px solid var(--border-default);border-radius:24px;box-shadow:var(--shadow-float);padding:1.6rem 1.8rem 1.3rem;display:flex;flex-direction:column;gap:1.2rem;animation:intro-dialog-in .26s cubic-bezier(.4,0,.2,1) both}@keyframes intro-dialog-in{0%{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:none}}.intro-close{position:absolute;top:.9rem;right:.9rem;z-index:2;display:inline-flex;padding:.45rem;border-radius:50%;background:none;border:none;color:var(--stone-500);cursor:pointer;transition:background .15s ease,color .15s ease}.intro-close:hover{background:var(--sand-100);color:var(--ink-900)}.intro-close:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}.intro-stage{display:grid;grid-template-columns:1fr;gap:1.4rem;align-items:center;animation:intro-in-fwd .32s cubic-bezier(.4,0,.2,1) both}.intro-stage[data-dir=back]{animation-name:intro-in-back}@keyframes intro-in-fwd{0%{opacity:0;transform:translate(26px)}to{opacity:1;transform:none}}@keyframes intro-in-back{0%{opacity:0;transform:translate(-26px)}to{opacity:1;transform:none}}.intro-art{background:var(--sand-50);border:1px solid var(--border-default);border-radius:18px;padding:.6rem .8rem;color:var(--intro-accent, var(--ink-900));align-self:start;display:flex;flex-direction:column;gap:.5rem}.intro-art-svg{display:block;width:100%;height:auto}.intro-art-svg text{font-family:var(--font-base)}.intro-art-detail{border-top:1px solid var(--border-default);padding-top:.55rem}.intro-copy{display:flex;flex-direction:column;gap:.5rem}.intro-eyebrow{font-size:.69rem;letter-spacing:.22em;font-weight:600;text-transform:uppercase;color:var(--intro-accent, var(--stone-500))}.intro-title{margin:0;font-size:clamp(1.4rem,3.2vw,1.9rem);font-weight:300;letter-spacing:-.02em;line-height:1.12;color:var(--ink-900)}.intro-body{margin:0;font-size:.98rem;line-height:1.55;color:var(--stone-600);max-width:48ch}.intro-caps{list-style:none;margin:.3rem 0 0;padding:0;display:flex;flex-direction:column;gap:.45rem}.intro-caps li{display:flex;align-items:flex-start;gap:.55rem;font-size:.9rem;line-height:1.4;color:var(--stone-600)}.intro-caps-mark{flex:none;margin-top:1px;display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:color-mix(in srgb,var(--intro-accent) 16%,transparent);color:var(--intro-accent)}.intro-howto{display:flex;align-items:flex-start;gap:.55rem;margin:.55rem 0 0;padding:.55rem .7rem;background:var(--sand-50);border:1px solid var(--border-default);border-radius:12px;font-size:.85rem;line-height:1.45;color:var(--stone-600)}.intro-howto-ic{flex:none;margin-top:1px;color:var(--intro-accent);display:inline-flex}.intro-howto strong{color:var(--ink-900);font-weight:600}@media(min-width:721px){.intro-stage{grid-template-columns:1.05fr 1fr;gap:2rem}.intro-copy{text-align:left}}@media(max-width:720px){.intro-dialog{padding:1.5rem 1.2rem 1.1rem;gap:1rem}.intro-copy{text-align:center;align-items:center}.intro-body{max-width:38ch}}.intro-footer{display:flex;align-items:center;justify-content:space-between;gap:.8rem;padding-top:.4rem}.intro-nav-btn{display:inline-flex;align-items:center;gap:.35rem;font:inherit;font-size:.86rem;font-weight:500;background:#fff;border:1px solid var(--border-default);color:var(--ink-900);border-radius:999px;padding:.5rem .95rem;cursor:pointer;transition:border-color .15s ease,background .15s ease,opacity .15s ease}.intro-nav-btn:hover{border-color:var(--stone-400)}.intro-nav-btn:disabled{opacity:.4;cursor:default}.intro-next{background:var(--ink-900);border-color:var(--ink-900);color:var(--cream-50)}.intro-next:hover{background:var(--ink-800);border-color:var(--ink-800)}.intro-cta{display:inline-flex;align-items:center;gap:.4rem;font:inherit;font-size:.9rem;font-weight:600;background:var(--sage-600);border:1px solid var(--sage-600);color:var(--cream-50);border-radius:999px;padding:.55rem 1.2rem;cursor:pointer;transition:filter .15s ease}.intro-cta:hover{filter:brightness(.95)}.intro-nav-btn:focus-visible,.intro-cta:focus-visible,.intro-dot:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}.intro-dots{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap;justify-content:center}.intro-dot{width:8px;height:8px;padding:0;border:none;border-radius:999px;background:var(--sand-300);cursor:pointer;transition:width .2s ease,background .2s ease}.intro-dot.is-active{width:22px;background:var(--intro-accent, var(--ink-900))}@media(max-width:480px){.intro-dot{width:7px;height:7px}.intro-dot.is-active{width:18px}}@media(prefers-reduced-motion:reduce){.intro-overlay,.intro-dialog,.intro-stage{animation:none!important}.intro-trigger.is-pulse:after{animation:none}.intro-trigger,.intro-nav-btn,.intro-cta,.intro-dot,.intro-close{transition:none}}