/* Talkusun × Yakumaru Talk — high-contrast, mobile-first UI */
.talkusun-app.talkusun-yakumaru{--yk-green:#24683c;--yk-green-dark:#174b2d;--yk-leaf:#83b765;--yk-cream:#fbfff5;--yk-ink:#203629;--yk-muted:#506454;max-width:760px;margin:22px auto;padding:0 12px;color:var(--yk-ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",Meiryo,sans-serif;box-sizing:border-box}
.talkusun-yakumaru *{box-sizing:border-box}
.talkusun-yakumaru .talkusun-card{overflow:hidden;border:2px solid #b8d6a5;border-radius:24px;background:linear-gradient(150deg,#fffef8 0%,#f0f8e9 65%,#e8f4df 100%);box-shadow:0 14px 36px rgba(36,104,60,.14);padding:0 0 18px}
.talkusun-yakumaru .talkusun-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 20px 20px;background:linear-gradient(120deg,#24683c,#174b2d);color:#fff;border-bottom:5px solid #a7ce83}
.talkusun-yakumaru .talkusun-brand{font-size:14px;font-weight:800;letter-spacing:.04em;color:#e9f8d9;margin-bottom:5px}
.talkusun-yakumaru .talkusun-logo{display:block;width:auto;height:auto;max-width:min(220px,52vw);max-height:56px;object-fit:contain;object-position:left center}
.talkusun-yakumaru .talkusun-head h2{font-size:clamp(23px,5vw,30px);line-height:1.3;margin:0;color:#fff;font-weight:900;overflow-wrap:anywhere}
.talkusun-yakumaru .talkusun-status{flex-shrink:0;background:#e7f6d8;color:#1c5c32;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:900;white-space:nowrap}
.talkusun-yakumaru .talkusun-card>label{display:block;margin:20px 20px 8px;font-size:17px;font-weight:900;color:#244e30}
.talkusun-yakumaru #talkusun-nickname{display:block;width:calc(100% - 40px);margin:0 20px;padding:14px 15px;min-height:54px;border:2px solid #9bc583;border-radius:13px;background:#fff;color:#1c3222;font-size:18px;box-shadow:inset 0 1px 2px #1c55200a}
.talkusun-yakumaru #talkusun-nickname:focus,.talkusun-yakumaru #talkusun-message:focus{outline:3px solid #f1ca55;outline-offset:2px;border-color:#24683c}
.talkusun-yakumaru .talkusun-chat-log{display:flex;flex-direction:column;gap:12px;height:min(48vh,440px);min-height:250px;overflow-y:auto;margin:20px;padding:16px 12px;border:1px solid #d6e6cc;border-radius:16px;background:rgba(255,255,255,.78);scroll-behavior:smooth}
.talkusun-yakumaru .talkusun-message{align-self:flex-start;display:flex;flex-direction:column;gap:5px;max-width:92%;padding:12px 15px;border:1px solid #d8e6d0;border-radius:15px 15px 15px 4px;background:#fff;color:#203629;box-shadow:0 2px 8px rgba(31,73,39,.06);overflow-wrap:anywhere;white-space:pre-wrap}
.talkusun-yakumaru .talkusun-message strong{font-size:14px;color:#23623a}
.talkusun-yakumaru .talkusun-message span{font-size:17px;line-height:1.65;white-space:pre-wrap}
.talkusun-yakumaru .talkusun-message time{font-size:11px;color:#667667;align-self:flex-end}
.talkusun-yakumaru .talkusun-send-form{display:flex;gap:10px;align-items:stretch;margin:0 20px;padding:0}
.talkusun-yakumaru #talkusun-message{flex:1;min-width:0;min-height:58px;padding:13px 14px;border:2px solid #9bc583;border-radius:14px;background:#fff;color:#203629;font-size:17px}
.talkusun-yakumaru .talkusun-send-form button{min-width:96px;padding:12px 18px;border:2px solid #174b2d;border-radius:14px;background:linear-gradient(140deg,#2d8048,#174b2d);color:#fff;font-size:17px;font-weight:900;box-shadow:0 4px 0 #103b22;cursor:pointer}
.talkusun-yakumaru .talkusun-send-form button:hover{filter:brightness(1.08)}
.talkusun-yakumaru .talkusun-send-form button:disabled{opacity:.6;cursor:wait}
.talkusun-yakumaru .talkusun-notice{margin:17px 20px 0;padding:11px 13px;border-radius:11px;background:#e7f2df;color:#31563a;font-size:14px;line-height:1.7}
.talkusun-yakumaru .talkusun-card:not(:has(.talkusun-head)){padding:26px 22px;text-align:center}
.talkusun-yakumaru .talkusun-kicker{font-size:13px;letter-spacing:.12em;font-weight:900;color:#39744a}
.talkusun-yakumaru .talkusun-card:not(:has(.talkusun-head)) h2{font-size:clamp(28px,6vw,38px);font-weight:900;color:#205a35;margin:10px 0 12px}
.talkusun-yakumaru .talkusun-card:not(:has(.talkusun-head)) p{font-size:17px;line-height:1.9;color:#415b45}
@media(max-width:480px){.talkusun-app.talkusun-yakumaru{margin:12px auto;padding:0 8px}.talkusun-yakumaru .talkusun-card{border-radius:18px}.talkusun-yakumaru .talkusun-head{padding:18px 14px}.talkusun-yakumaru .talkusun-status{font-size:11px;padding:7px 8px}.talkusun-yakumaru .talkusun-card>label{margin-left:14px;margin-right:14px}.talkusun-yakumaru #talkusun-nickname{width:calc(100% - 28px);margin:0 14px}.talkusun-yakumaru .talkusun-chat-log{margin:16px 12px;padding:12px 9px;min-height:220px}.talkusun-yakumaru .talkusun-send-form{margin:0 12px;gap:8px}.talkusun-yakumaru #talkusun-message{font-size:16px;padding:12px 10px}.talkusun-yakumaru .talkusun-send-form button{min-width:76px;padding:10px 12px;font-size:16px}.talkusun-yakumaru .talkusun-notice{margin:14px 12px 0}}