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#00000026}.online-divider{text-align:center;color:var(--color-text-light);font-size:.9rem}.join-section{flex-direction:column;gap:12px;display:flex}.join-section input{text-align:center;letter-spacing:.2em;text-transform:uppercase;border:2px solid #ddd;border-radius:8px;padding:14px 16px;font-size:1.1rem}.join-section input:focus{border-color:var(--color-red);outline:none}.room-waiting,.room-joining{text-align:center}.room-waiting h2,.room-joining h2{margin-bottom:20px;font-size:1.5rem}.room-info{flex-direction:column;align-items:center;gap:12px;margin-bottom:24px;display:flex}.room-id{letter-spacing:.15em;font-size:1.2rem}.room-id strong{color:var(--color-red);font-size:1.5rem}.copy-btn{cursor:pointer;background:#eee;border:1px solid #ddd;border-radius:6px;padding:10px 24px}.copy-btn:hover{background:#ddd}.waiting-text{color:var(--color-text-light);font-size:1rem}.player-info{margin-top:20px;font-size:.95rem}.player-info .you{color:var(--color-red)}.error{color:#d32f2f;text-align:center;background:#ffebee;border-radius:4px;padding:8px;font-size:.9rem}.join-redirect{justify-content:center;align-items:center;height:100vh;display:flex}.join-container{text-align:center}.loading-message p{color:var(--color-text-light);font-size:1.2rem}.error-message p{color:#d32f2f;font-size:1.1rem}.error-message .sub{color:var(--color-text-light);margin-top:8px;font-size:.9rem}:root{--color-bg:#f5f0e8;--color-board:#f5f0e8;--color-lines:#2d2d2d;--color-red:#c73e3a;--color-black:#2d2d2d;--color-accent:#d4a84b;--color-accent-transparent:#d7a84b80;--color-danger:#f44;--color-text:#333;--color-text-light:#666;--font-family:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--breakpoint:768px;--board-size:min(95vw, 600px);--cell-size:calc(var(--board-size) / 9);--piece-size:calc(var(--cell-size) * 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