.mhc-stage{position:relative;min-height:760px;overflow:hidden;border-radius:6px;background:#3d1714 url(//chiduru.jp/wp-content/plugins/mou-hitotsu-no-chiduru/assets/lounge.png) center/cover no-repeat;color:#fff;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;box-shadow:0 18px 50px rgba(24,8,5,.25)}
.mhc-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,8,7,.74),rgba(35,12,9,.26) 55%,rgba(22,7,6,.52))}
.mhc-entry,.mhc-room{position:relative;z-index:1}
.mhc-entry{max-width:590px;padding:120px 8% 90px;text-shadow:0 2px 14px rgba(0,0,0,.45)}
.mhc-kicker{font-size:18px;letter-spacing:.18em;margin:0 0 18px}
.mhc-entry h2{font-size:42px;line-height:1.55;font-weight:500;margin:0 0 24px}
.mhc-entry p{font-size:17px;line-height:2}
.mhc-rule{font-size:14px!important;opacity:.88;border-left:1px solid rgba(255,255,255,.65);padding-left:18px;margin-top:28px}
.mhc-enter{margin-top:22px;padding:14px 42px;border:1px solid rgba(255,255,255,.75);background:rgba(82,27,24,.74);color:#fff;font:inherit;letter-spacing:.12em;cursor:pointer;transition:.25s}
.mhc-enter:hover{background:rgba(125,55,49,.9);transform:translateY(-1px)}
.mhc-room{width:min(760px,calc(100% - 36px));margin:38px auto;background:rgba(255,249,242,.94);color:#3a2724;border:1px solid rgba(255,255,255,.55);box-shadow:0 24px 60px rgba(24,7,5,.36);backdrop-filter:blur(5px)}
.mhc-header{display:flex;justify-content:space-between;align-items:center;padding:19px 24px;border-bottom:1px solid #dccbc2;background:rgba(91,31,29,.96);color:#fff}
.mhc-small{display:block;font-size:12px;letter-spacing:.12em;opacity:.84}.mhc-header strong{font-size:16px;font-weight:500}.mhc-time{font-family:Georgia,serif;font-size:18px}
.mhc-messages{height:490px;overflow-y:auto;padding:25px 22px;background:linear-gradient(rgba(255,252,248,.94),rgba(249,240,232,.94))}
.mhc-msg{max-width:82%;margin:0 0 17px;padding:12px 15px;line-height:1.85;white-space:pre-wrap;border-radius:2px}
.mhc-msg.assistant{background:#fff;border-left:3px solid #9b605c;box-shadow:0 3px 12px rgba(63,33,28,.08)}
.mhc-msg.user{margin-left:auto;background:#6d3734;color:#fff}
.mhc-msg.system{max-width:100%;text-align:center;background:#f4e7dc;color:#6b423d;font-size:14px}
.mhc-notice{padding:12px 20px;text-align:center;background:#f5e7da;border-top:1px solid #dbc5b7;color:#704841}
.mhc-form{display:flex;gap:10px;padding:16px 18px;background:#fff;border-top:1px solid #e2d3cb}
.mhc-form textarea{flex:1;resize:none;border:1px solid #cdbbb1;padding:12px;font:15px/1.6 sans-serif;background:#fff}
.mhc-form button{width:92px;border:0;background:#6d3734;color:#fff;font:15px serif;cursor:pointer}.mhc-form button:disabled{opacity:.45}
.mhc-footnote{margin:0;padding:0 18px 15px;background:#fff;color:#8b7770;font:12px sans-serif}
@media(max-width:680px){.mhc-stage{min-height:680px}.mhc-entry{padding:80px 28px}.mhc-entry h2{font-size:29px}.mhc-room{width:calc(100% - 20px);margin:10px auto}.mhc-messages{height:430px}.mhc-msg{max-width:90%}}