@import "https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;600;700&display=swap";:root{color:#f5f5f5;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#1a1a1c;font-family:Noto Sans JP,system-ui,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}#root{width:100%;min-height:100vh}button{font-family:inherit}.keychain-scene{flex-direction:column;align-items:center;gap:1.5rem;padding:2rem 1rem 3rem;display:flex}.keychain-wrapper{filter:drop-shadow(0 18px 28px #00000073);position:relative}.keychain-chain{z-index:2;pointer-events:none;flex-direction:column;align-items:center;display:flex;position:absolute;top:-2.4rem;left:1.1rem}.keychain-ring{background:0 0;border:3px solid #b8bcc4;border-radius:50%;width:1.1rem;height:1.1rem;box-shadow:inset 0 1px 2px #ffffff80}.keychain-link{background:linear-gradient(90deg,#8a9099,#d5dae3 45%,#8a9099);border-radius:2px;width:3px;height:1.5rem}.keychain{--face-w:340px;--face-h:200px;--yamanote-green:#00a040;--face-bg:#f4f4f2;--text:#111;width:var(--face-w);color:var(--text);background:var(--face-bg);border:1px solid #e0e0de;border-radius:14px;padding:0;box-shadow:inset 0 1px #ffffffe6,0 2px #d8d8d6,0 4px 12px #0000001f}.keychain-face{min-height:var(--face-h);border-radius:14px;position:relative;overflow:hidden}.keychain-top{--white-area-h:7.4rem;height:var(--white-area-h);min-height:var(--white-area-h);box-sizing:border-box;grid-template-columns:auto auto 1fr;align-items:start;column-gap:.4rem;padding:.5rem .65rem .35rem;display:grid;position:relative}.speaker-grille{--speaker-margin:calc(var(--white-area-h) * .06);--grille-size:calc(var(--white-area-h) * .8 - 2 * var(--speaker-margin));--hole-size:calc(var(--grille-size) * .09025);height:var(--grille-size);width:var(--grille-size);margin:var(--speaker-margin) var(--speaker-margin) 0 0;background-color:var(--face-bg);border-radius:50%;flex-shrink:0;grid-area:1/1;align-self:start;position:relative;overflow:hidden}.speaker-grille__hole{width:var(--hole-size);height:var(--hole-size);background:#2a2a2a;border-radius:50%;position:absolute;transform:translate(-50%,-50%);box-shadow:inset 0 1px 2px #00000080}.station-code{background:#111;border-radius:6px;flex-direction:column;grid-area:1/2;align-items:stretch;gap:3px;width:2.35rem;padding:4px 5px 5px;font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-weight:800;line-height:1;display:flex}.station-code__tyo{letter-spacing:.06em;color:#fff;text-align:center;padding:1px 2px 0;font-size:.58rem}.station-code__jy-box{border:2px solid var(--yamanote-green);color:#111;background:#fff;border-radius:4px;flex-direction:column;justify-content:center;align-items:center;gap:1px;padding:3px 6px 4px;font-size:.62rem;display:flex}.station-code__line{letter-spacing:.04em}.station-code__num{letter-spacing:.02em;font-size:.78rem}.station-name-block{grid-area:1/3;justify-self:start;max-width:11rem;display:block}.station-name-main{align-items:flex-start;gap:.35rem;display:flex}.station-kanji{letter-spacing:.06em;color:var(--text);font-family:Noto Sans JP,Hiragino Sans,Yu Gothic,sans-serif;font-size:2.35rem;font-weight:700;line-height:1}.station-sub{flex-direction:column;gap:.15rem;padding-top:.35rem;display:flex}.station-hiragana{color:#333;letter-spacing:.08em;font-family:Noto Sans JP,sans-serif;font-size:.62rem}.station-i18n{color:#444;gap:.35rem;font-size:.5rem;line-height:1.2;display:flex}.station-zone{color:#111;letter-spacing:.12em;vertical-align:top;border:1.5px solid #111;justify-content:center;align-items:center;margin-top:.2rem;margin-left:.15rem;padding:1px 3px;font-family:Noto Sans JP,sans-serif;font-size:.48rem;font-weight:600;display:inline-flex}.keychain-led{background:radial-gradient(circle at 35% 35%,#fff,#c8e8d0 55%,#88b898);border-radius:50%;width:7px;height:7px;transition:box-shadow .15s,background .15s;position:absolute;top:1.05rem;left:8.75rem;box-shadow:0 0 0 1px #00000014}.keychain-led--on{background:radial-gradient(circle at 35% 35%,#fff,#9effb8 50%,#00c853);box-shadow:0 0 6px 2px #00c850a6,0 0 0 1px #00a0404d}.keychain-button{cursor:pointer;z-index:3;background:radial-gradient(circle at 35% 30%,#fff,#e8e8e6 55%,#d0d0ce);border:none;border-radius:50%;width:1.65rem;height:1.65rem;padding:0;transition:transform 80ms,box-shadow 80ms;position:absolute;top:4.1rem;right:2.1rem;box-shadow:0 2px 3px #0000002e,inset 0 -2px 4px #00000014,inset 0 1px #ffffffe6}.keychain-button:hover{filter:brightness(1.03)}.keychain-button:active,.keychain-button--pressed{transform:scale(.94)translateY(1px);box-shadow:0 1px 2px #00000026,inset 0 2px 5px #0000001f}.keychain-button:focus-visible{outline:2px solid var(--yamanote-green);outline-offset:3px}.keychain-bar{background:var(--yamanote-green);color:#fff;grid-template-columns:1fr auto 1fr;align-items:stretch;min-height:4.5rem;margin-top:.15rem;display:grid}.adj-station{flex-direction:column;justify-content:center;padding:.45rem .5rem;font-family:Noto Sans JP,sans-serif;display:flex;position:relative}.adj-station--prev{text-align:left;padding-left:.65rem}.adj-station--current{text-align:center;border-left:3px solid #ffffff59;border-right:3px solid #ffffff59;min-width:5.5rem;padding:.5rem .85rem .35rem}.adj-station--next{text-align:right;align-items:flex-end;padding-right:.65rem}.adj-station__kanji{letter-spacing:.05em;font-size:1.05rem;font-weight:700;line-height:1.2}.adj-station__en{opacity:.95;margin-top:.1rem;font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:.58rem;font-weight:500}.adj-station--current .adj-station__en{margin-top:.35rem;font-size:.72rem;font-weight:600}.station-code-mini{border:1.5px solid #ffffffd9;margin-top:.2rem;font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:.42rem;font-weight:800;line-height:1;display:inline-flex}.station-code-mini span:first-child{border-right:1px solid #ffffffd9;padding:1px 2px}.station-code-mini span:last-child{padding:1px 3px}.keychain-hint{text-align:center;color:#ffffff8c;max-width:22rem;margin:0;font-size:.82rem;line-height:1.5}.keychain-hint code{color:#ffffffbf;font-size:.75rem}@media (width<=400px){.keychain{--face-w:min(340px, 92vw)}.station-kanji{font-size:2rem}}.app{justify-content:center;align-items:center;width:100%;min-height:100vh;display:flex}