.board-notice{max-width:45rem;margin:0 auto;border-radius:.5rem;box-shadow:0 .125rem .5rem rgba(0,0,0,.08);padding:2rem}.board-notice__item{display:grid;grid-template-columns:auto 1fr;gap:.75rem;border-bottom:1px solid #e8e5e0;padding:1.25rem 0;transition:background-color .2s ease}.board-notice__item:last-child{border-bottom:none}.board-notice__main{display:flex;align-items:flex-start;gap:12px}.board-notice__icon{font-size:1.25rem;line-height:1.5rem;padding-top:.125rem}.board-notice__body{display:flex;flex-direction:column;gap:.5rem}.board-notice__text{font-size:1rem;line-height:1.5}.board-notice__meta{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:#8a8680}.board-notice__time{position:relative}.board-notice__time::after{content:"・";margin-left:.5rem}.board-notice__date{color:#a09890}.board-notice__action{margin-left:auto;background:#272727;border:1px solid #d0ccc5;padding:.125rem .625rem;border-radius:.25rem;font-size:.8125rem;color:gray;transition:all .2s ease;white-space:nowrap}@media(hover: hover)and (pointer: fine){.board-notice__action:hover{background:rgba(122,122,122,.45);border-color:#b0aca5;color:#d5d5d5}}.board-notice__action--expand::after{content:" ↓"}.board-notice__action--collapse::after{content:" ↑"}.board-notice__expand{grid-column:2;margin-top:.75rem;padding:.75rem 1rem;background:#414141;border-left:3px solid #e0dcd5;border-radius:0 .25rem .25rem 0;font-size:.9375rem;line-height:1.6;color:#b8b8b8;display:none}.board-notice__expand--active{display:block;animation:slideDown .3s ease}@media(max-width: 480px){.board-notice{padding:1.25rem;border-radius:.375rem}.board-notice__item{gap:.625rem;padding:1rem 0}.board-notice__icon{font-size:1.125rem}.board-notice__text{font-size:.9375rem}.board-notice__meta{font-size:.8125rem}.board-notice__expand{font-size:.875rem;padding:.625rem .875rem}}@media(min-width: 481px)and (max-width: 768px){.board-notice{padding:1.5rem}}@media(min-width: 1200px){.board-notice{max-width:48rem}}@keyframes slideDown{from{opacity:0;transform:translateY(-0.625rem)}to{opacity:1;transform:translateY(0)}}