.utility-page main { max-width: 880px; margin: auto; padding: 24px 20px 36px; }
.utility-page a { color: #285ba8; text-underline-offset: 3px; }
.utility-nav { display: flex; justify-content: space-between; gap: 16px; font-size: 14px; }
.utility-hero { text-align: center; padding: 26px 0 20px; }
.utility-hero h1 { font-size: clamp(28px, 5vw, 42px); margin: 0 0 10px; letter-spacing: -1px; }
.utility-hero p { max-width: 640px; margin: auto; line-height: 1.6; color: #525c70; }
.utility-card { padding: 26px; border-radius: 22px; background: var(--surface); box-shadow: var(--shadow-lg); }
.utility-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.utility-fields label { display: grid; gap: 7px; font-size: 14px; font-weight: 700; }
.utility-page input[type=number], .utility-page select { width: 100%; min-width: 0; border: 1px solid #a7b7d0; border-radius: 10px; padding: 12px; font: inherit; background: #fff; color: var(--ink); }
.utility-page input[type=checkbox] { width: 19px; height: 19px; accent-color: #285ba8; }
.utility-check { display: flex; align-items: center; gap: 9px; margin: 18px 0; font-size: 14px; }
.utility-presets, .utility-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 16px 0; }
.utility-presets span { font-size: 13px; color: #525c70; }
.utility-page button { min-height: 44px; }
.utility-page .btn-primary { background: #285ba8; border-color: #285ba8; }
.utility-page button:disabled { opacity: .5; cursor: default; }
.utility-page :focus-visible { outline: 3px solid #285ba8; outline-offset: 3px; }
.utility-stage { background: linear-gradient(140deg, #eaf3ff, #fff6e9); border-radius: 16px; padding: 24px 18px; margin: 20px 0; text-align: center; min-height: 145px; display: grid; align-content: center; gap: 14px; }
.utility-result { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; max-height: 260px; overflow-y: auto; overflow-wrap: anywhere; }
.result-chip { border: 1px solid #d6e2f4; border-radius: 10px; background: #fff; padding: 8px 13px; font-weight: 800; font-size: 20px; max-width: 100%; }
.utility-result.single .result-chip { background: none; border: 0; font-size: clamp(30px, 7vw, 58px); }
.utility-hint, .utility-status { font-size: 13px; color: #525c70; line-height: 1.6; margin: 8px 0; }
.utility-error { color: #9b2424; font-weight: 700; }
.utility-history { max-height: 190px; overflow-y: auto; padding-left: 24px; font-size: 14px; line-height: 1.7; overflow-wrap: anywhere; }
.utility-card h2 { font-size: 16px; margin: 20px 0 6px; }
.utility-copy { padding-top: 24px; line-height: 1.75; }
.utility-copy h2 { font-size: 23px; margin: 28px 0 10px; }
.utility-copy p { margin: 10px 0; }
.utility-copy details { padding: 14px 0; border-bottom: 1px solid #d1dbea; }
.utility-copy summary { cursor: pointer; font-weight: 700; }
.utility-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.utility-links a { background: #fff; border-radius: 12px; padding: 16px; text-decoration: none; font-weight: 700; }
.utility-links small { display: block; color: #525c70; margin-top: 5px; font-weight: 400; }
.utility-page #site-footer { position: static; padding: 12px 18px 28px; line-height: 2; }
.coin-face { display: grid; place-items: center; width: 116px; height: 116px; margin: auto; border-radius: 50%; border: 7px double #bf8425; background: #ffdc81; color: #60400c; font-size: 24px; font-weight: 800; box-shadow: 0 6px 0 #e6b854; }
.coin-face.is-flipping { animation: coin-turn .35s ease-out; }
@keyframes coin-turn { from { transform: rotateY(0); } to { transform: rotateY(720deg); } }
@media (prefers-reduced-motion: reduce) { .coin-face.is-flipping { animation: none; } }
@media (max-width: 520px) { .utility-page main { padding: 18px 14px 28px; } .utility-card { padding: 18px 14px; } .utility-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); } .utility-fields label:last-child { grid-column: 1 / -1; } .utility-links { grid-template-columns: 1fr; } }
.utility-page #site-footer a { display: inline-block; }
.utility-page[data-utility="coin-flip"] .utility-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 520px) { .utility-page[data-utility="coin-flip"] .utility-fields { grid-template-columns: 1fr; } }