*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:#143762;background:linear-gradient(180deg,#eef8ff,#fff 70%);font:18px/1.8 system-ui,-apple-system,"Noto Sans JP","Yu Gothic",sans-serif}a{color:inherit;text-decoration:none}img{display:block}a:focus-visible{outline:3px solid #ed7526;outline-offset:4px}.pet-header{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px max(5vw,20px);background:#fff;border-bottom:1px solid #d5e6f5;position:sticky;top:0;z-index:10}.pet-brand img{width:92px;height:auto}.pet-back{font-size:17px;font-weight:800;color:#075bb7;padding:12px 0}.pet-intro{text-align:center;max-width:1000px;margin:0 auto;padding:44px 20px 22px}.pet-kicker{font-weight:800;color:#0870ba;font-size:16px}.pet-intro h1,.nyan-intro h1{font-size:clamp(30px,4vw,48px);line-height:1.45;margin:12px 0 18px;color:#075bb7}.pet-intro p{margin:10px 0;font-size:20px}.pet-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:26px}.pet-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;border:1px solid #075bb7;border-radius:14px;padding:12px 20px;background:#075bb7;color:#fff;font-size:18px;font-weight:800;line-height:1.6;text-align:center}.pet-button.light{background:#fff;color:#075bb7;border-color:#bad7ee}.pet-button:hover{box-shadow:0 6px 18px #125b9b20}.pet-friends-note{width:min(900px,calc(100% - 40px));margin:16px auto 28px;text-align:center}.pet-friends-note p{margin:0;font-size:17px;color:#4c6680}.pet-friends-note strong{color:#075bb7}.pet-grid{width:min(1200px,calc(100% - 40px));margin:28px auto 54px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch;scroll-margin-top:120px}.pet-card{display:flex;flex-direction:column;background:#fff;border:1px solid #c8e1f4;border-radius:20px;min-width:0;overflow:hidden;box-shadow:0 12px 32px #1174b910}.pet-art{position:relative;overflow:hidden;background:#fff;aspect-ratio:768 / var(--art-height,768)}.pet-art img{width:100%;max-width:100%;height:auto;aspect-ratio:1;object-fit:contain}.pet-card-copy{flex:1;padding:18px 20px;border-top:1px solid #e7eff7;min-height:106px}.pet-card-copy small{font-size:14px;color:#5a7389}.pet-card h2{font-size:20px;line-height:1.6;margin:6px 0;color:#075bb7}.pet-next{max-width:1000px;margin:0 auto 54px;padding:32px 24px;text-align:center;background:#eef8ff;border-radius:24px}.pet-next h2{font-size:28px;margin:0 0 14px}.pet-next p{font-size:18px}.pet-footer{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:26px 5vw;background:#103565;color:#fff;font-size:16px}.pet-footer a{font-weight:800}.pet-skip{position:fixed;top:0;left:12px;transform:translateY(-150%);z-index:20;background:#fff;padding:14px}.pet-skip:focus{transform:none}.nyan-intro{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:54px 30px}.nyan-copy p{font-size:20px}.nyan-copy .pet-kicker{font-size:16px}.nyan-reading{color:#557088;font-size:17px!important}.nyan-copy .pet-actions{justify-content:flex-start}.nyan-visual{margin:0;background:#fff;border:1px solid #c8e1f4;border-radius:24px;overflow:hidden}.nyan-visual figcaption{display:flex;justify-content:space-around;gap:12px;padding:14px;font-size:17px;border-top:1px solid #e7eff7}.nyan-visual figcaption strong{color:#075bb7}@media(max-width:850px){.pet-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.nyan-intro{gap:26px;padding:36px 22px}.nyan-copy p{font-size:18px}.nyan-intro{grid-template-columns:1fr}.nyan-visual{max-width:520px;width:100%;margin:auto}.nyan-copy{text-align:center}.nyan-copy .pet-actions{justify-content:center}}@media(max-width:540px){body{font-size:17px}.pet-header{padding:10px 16px;gap:12px}.pet-brand img{width:74px}.pet-back{font-size:15px}.pet-grid{grid-template-columns:1fr;width:calc(100% - 32px);gap:20px}.pet-intro{padding:28px 18px 18px}.pet-intro h1{font-size:30px}.pet-intro p{font-size:18px}.pet-button{font-size:17px;width:100%}.pet-actions{gap:10px}.pet-card h2{font-size:21px}.pet-next{margin:0 16px 36px;padding:26px 18px}.pet-next h2{font-size:24px}.pet-footer{flex-direction:column;align-items:flex-start}.nyan-intro{padding:26px 18px}.nyan-intro h1{font-size:34px}.nyan-visual figcaption{font-size:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.nyan-name-reading{font-size:.6em;display:inline-block}.nyan-visual figcaption{text-align:center}

@media(max-width:850px){.nyan-visual{order:-1;max-width:340px}.nyan-intro{gap:22px}.nyan-copy .pet-kicker{margin-top:0}}

/* Each original 768px tile includes the top of the next row.
   Rejoin those adjacent fragments in the display window without changing artwork. */
.pet-art-frame{aspect-ratio:1;display:flex;align-items:center;padding:12px;background:#fff;flex-shrink:0}
.pet-art-frame .pet-art{width:100%;flex:none}
.pet-art-frame .pet-art img{position:absolute;left:0;top:var(--art-offset,0%);width:100%;height:auto;aspect-ratio:1}
.pet-art-frame .pet-art .pet-art-prefix{top:var(--prefix-offset);pointer-events:none}

/* Tile 04 also contains a narrow piece of the neighboring panel at its left edge. */
.pet-card:nth-child(4) .pet-art::after{content:"";position:absolute;left:0;top:22%;width:2%;height:24%;background:#fff;pointer-events:none}